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Home My WebLink About20133566.tiff NOTICE OF FINAL READING OF ORDINANCE Pursuant to the Weld County Home Rule Charter, Ordinance Number 2013-13 was introduced on first reading on December 9, 2013, and a public hearing and second reading was held on December 30, 2013. A public hearing and final reading was completed on January 20, 2014, with changes being made as listed below, and on motion duly made and seconded, was adopted. Effective date of said Ordinance is listed below. Any backup material, exhibits or information previously submitted to the Board of County Commissioners concerning this matter may be examined in the office of the Clerk to the Board of County Commissioners, located within the Weld County Administration Building, 1150 O Street, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru Friday, or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail messages sent to an individual Commissioner may not be included in the case file. To ensure inclusion of your E-Mail correspondence into the case file, please send a copy to egesick@co.weld.co.us. ORDINANCE NO. 2013-13 ORDINANCE TITLE: IN THE MATTER OF REPEALING AND REENACTING IN ITS ENTIRETY, CHAPTER 30 SEWAGE SYSTEMS, OF THE WELD COUNTY CODE EFFECTIVE DATE: July 1, 2014 BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO DATED: January 24, 2014 PUBLISHED: January 30, 2014, in the Greeley Tribune CHANGES MADE TO CODE ORDINANCE 2013-13 ON FINAL READING CHAPTER 30 SEWAGE SYSTEMS O WELD COUNTY DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS Amend Table of Contents to read as follows: TABLE OF CONTENTS ARTICLE I AUTHORITY Sec. 30-1-10. Title Sec. 30-1-20. Jurisdiction, Severability, Savings Clause Sec. 30-1-30. Effective Date ARTICLE II SCOPE AND PURPOSE Sec. 30-2-10. Declaration ,`D13--35(04' Sec. 30-2-20. Purpose Sec. 30-2-30. Effluent Discharged to Surface Waters ARTICLE III DEFINITIONS Sec. 30-3-10. Definitions Table 30-3-1 Abbreviations and Acronyms ARTICLE IV ADMINISTRATION AND ENFORCEMENT Sec. 30-4-10. General Sanitation Requirements Sec. 30-4-20. Existing OWTS Review Sec. 30-4-30. Permit Application Requirements and Procedures Sec. 30-4-40. Determination of Compliance of Permit Submission Sec. 30-4-50. Denial of Permit Application Sec. 30-4-60. Access to Site Sec. 30-4-70. Notification and Inspection Stages Sec. 30-4-80. Final Approval of OVVTS Permit Sec. 30-4-90. Systems Employing New Technology Sec. 30-4-100. Experimental Systems Sec. 30-4-110. Systems Contractor License Sec. 30-4-120. Regulations of Systems Cleaners Sec. 30-4-130. Variance Procedure Sec. 30-4-140. General Prohibitions Sec. 30-4-150. Prohibition of On-Site Wastewater Treatment Systems in Unsuitable Areas Sec. 30-4-160. Enforcement Sec. 30-4-170. Penalties ARTICLE V SITE AND SOIL EVALUATION Sec. 30-5-10. Site and Soil Evaluation General Requirements Sec. 30-5-20. Preliminary Investigation Sec. 30-5-30. Reconnaissance Sec. 30-5-40. Detailed Soil Investigation Sec. 30-5-50. Percolation Holes, Profile Holes, and Profile Test Pits Excavations— Marking Sec. 30-5-60. Report and Site Plan Sec. 30-5-70. Design Document Sec. 30-5-80. As-Built Drawings Sec. 30-5-90. Site Protection Sec. 30-5-100. Qualifications for a Competent Technician ARTICLE VI WASTEWATER FLOW AND STRENGTH Sec. 30-6-10. Wastewater Flows Table 30-6-1 Single-Family Residential Design Flows Table 30-6-2 Estimate of Average Daily Wastewater Flow and BOD5 Load Per Person Unless Otherwise Noted Sec. 30-6-20. Wastewater Strength Table 30-6-3 Treatment Levels ARTICLE VII MINIMUM DISTANCES BETWEEN COMPONENTS OF AN ON-SITE WASTEWATER TREATMENT SYSTEM AND PHYSICAL FEATURES Sec. 30-7-10. Minimum Horizontal Distances Sec. 30-7-20. Dry Gulches, Cut Banks and Fill Areas Sec. 30-7-30. On-site Wastewater Treatment System Design Consideration Soil Treatment Area Table 30-7-1 Minimum Horizontal Distances in Feet Between Components of an On-Site Wastewater Treatment System Installed After November 15, 1973 and Water, Physical and Health Impact Features Table 30-7-2 On-site Wastewater Treatment System Design Consideration and Treatment Requirements— Separation Distances from Soil Treatment Area ARTICLE VIII DESIGN CRITERIA-GENERAL Sec. 30-8-10. Performance Sec. 30-8-20. Reliability Sec. 30-8-30. Accessibility for Inspection, Maintenance, and Servicing Sec. 30-8-40. Plumbing Codes Sec. 30-8-50. Electrical Equipment Sec. 30-8-60. Indicators of Failure or Malfunctioning for Systems Utilizing Mechanical Apparatus Sec. 30-8-70. Sampling Access Sec. 30-8-80. Component Operating Instructions Sec. 30-8-90. Surface Activity Sec. 30-8-100. Floodplains Sec. 30-8-110. Business Commercial, Industrial, Institutional or Multi-Family DwellingWastewater Systems ARTICLE IX DESIGN CRITERIA-COMPONENTS Sec. 30-9-10. Tanks and Vaults Sec. 30-9-20. Septic Tanks Table 30-9-1 Minimum Septic Tank Size Based on Number of Bedrooms Sec. 30-9-30. Abandonment of Tank Sec. 30-9-40. Pipe Standards and Bedding Requirements Sec. 30-9-50. Distribution Box Sec. 30-9-60. Drop Box Sec. 30-9-70. Stepdown/Relief Line Sec. 30-9-80. Wastewater Pumping and Dosing Siphon Systems Sec. 30-8-90. Surface Activity Sec. 30-9-100. Grease Interceptor Tanks ARTICLE X DESIGN CRITERIA-SOIL TREATMENT AREA Sec. 30-10-10. Soil Treatment Area General Sec. 30-10-20. Calculation of Infiltrative Surface of Soil Treatment Area Table 30-10-1 Soil Treatment Area Long-term Acceptance Rates by Soil Texture, Soil Structure, Percolation Rate and Treatment Level Sec. 30-10-30. Allowable Soil Treatment Area Reductions and Increases Table 30-10-2 Size Adjustment Factors for Methods of Application in Soil Treatment Areas Table 30-10-3 Size Adjustment Factors for Types of Distribution Media in Soi l Treatment Areas Sec. 30-10-40. Design of Distribution Systems Sec. 30-10-50. Alternating and Sequencing Zone Systems Sec. 30-10-60. Dosing Sec. 30-10-70. Lift Stations Sec. 30-10-80. Soil Replacement Sec. 30-10-90. Repairs ARTICLE XI DESIGN CRITERIA-HIGHER LEVEL TREATMENT SYSTEMS Sec. 30-11-10. General Sec. 30-11-20. Treatment Levels Sec. 30-11-30. Sand Filters Sec. 30-11-40. Rock Plant Filter(Constructed Wetland) Treatment Before a Soil Treatment Area ARTICLE XII DESIGN CRITERIA-OTHER FACILITIES Sec. 30-12-10. Wastewater Remaining After Separation of Toilet Wastes Sec. 30-12-20. Evapotranspiration and Evapotranspiration/Absorption Systems Table 30-12-1 Gradation of Wicking Sand for Evapotranspiration Beds Sec. 30-12-30. Wastewater Ponds Sec. 30-12-40. Vaults and Vault Privies Sec. 30-12-50. Incinerating, Composting and Chemical Toilets Sec. 30-12-60. Treatment Systems Other Than Those Discharging Through a Soil Treatment Area or Sand Filter System ARTICLE XIII OPERATION AND MAINTENANCE Sec. 30-13-10. Responsibility Sec. 13-13-20. Service Label Sec. 30-13-30. Monitoring and Sampling Appendix 30-A TEXTURAL TRIANGLE DEFINING TWELVE TEXTURAL CLASSES OF SOIL OF THE USDA Appendix 30-B SOIL CLASSIFICATION SYSTEM (SOIL-SEPARATE SIZE LIMITS) Appendix 30-C ANNUAL FREE WATER SURFACE EVAPORATION MAP OF WELD COUNTY ADAPTED FROM NOAA RR NWS 33 Add Sec. 30-1-30. Effective Date Upon adoption, the On-site Wastewater Treatment System Regulations shall become effective upon the first day of July, 2014. Until the first day of July, 2014, Chapter 30 Code provisions in effect prior to the changes contained in the On-site Wastewater Treatment System Regulations shall remain in effect. Amend Sec. 30-3-10, Definitions, to read as follows: "Competent technician" means a person designated by the Division who is able to conduct and interpret the results of soil profile test pit excavations, profile holes, percolation tests, and site evaluations. Amend ARTICLE X, DESIGN CRITERIA - SOIL TREATMENT AREA, to correct Section numbering. Amend the Ordinance Resolution to incorporate the following text: BE IT FURTHER ORDAINED by the Board that the effective date of the changes to Weld County Code Chapter 30 contained herein shall be the first day of July, 2014, and until the first day of July, 2014, the provisions of Weld County Code Chapter 30 in effect prior to the changes contained herein shall remain in effect. Amend the Effective Date to be July 1, 2014, rather than February 3, 3013. i t - Affidavit of Pub I ication • • STATE OF COLORADO ss. County of Weld, • I Desirea Larson • of said County. of Weld, being duly sworn, say that I am.an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily_ newspaper of general circulation and printed and published in the City of • Greeley,:in said county and state; that the.noti.ce or advertisement,of which the annexed is a true copy, • has been published in said daily newspaper for . consecutive(days):that the notice was published in • • the regular and entire issue of every number of said • . - newspaper during the period and time of . publication of said notice, and in the newspaper • . proper and not in a. supplement thereof; that the • • first publication-of said notice was contained in the • Thirtieth day of January A.D. 201.4 and the • last. publication thereof in •the issue of said • . newspaper bearing the date of the Thirtieth day of January A.D. 2014 that said The Greeley Tribune has been- published • continuously and uninterruptedly during the period • • • of at least six months next prior to the first issue • thereof contained said notice or advertisement .• • above referred to; that said newspaper has been • • • admitted to the United States mails as second-class • matter under the provisions of the Act of March • 3,1879, or any amendments thereof; and that said• • • • newspaper is a daily newspaper duly qualified for • • publishing legal notices and advertisements within • the meaning of the laws of the State•of Colorado. • . • • • January 30,2014 Total Charges: $59.95 _/ klen • 30th day of J. .ua 2)14 My Commission Expires 6/14/2017 • 41 /.?71114. • -- • Notary Public ROBERT LITTLE • NOTARY PUBLIC - . • ;.• • STATE OF COLORADO • • - NOTARY ID 20014018494 MY COMMISSION EXPIRES JUNE'14,2017 1 Y NOTICE OF ARTICLE IXDESIGN CRITERIA-COMPONENTS Sec.30-9-10. Tanks and Vaults FINAL READING OF ORDINANCE Sec.30-9-20, Septic Tanks Table 30-9-1 Minimum Septic Tank Size Based on Number Pursuant to the Weld County Home Rule Charter,Ordinance Number 2013-13 was introduced on - of Bedrooms - first reading on December 9,2013,and a public hearing and second reading wed held on Decem- Sec.30-9-30.Abandonment of Tank ber 30,2013. A public hearing and final reading was completed on January 20,2014,with chang- Sec.30-9-40, Pipe Standards and Bedding Requirements es being made as listed below,and on motion duly made and seconded,was adopted. Effective Sec.30-9-50. Distribution Box date of said Ordinance is listed helot)). Any backup material,exhibits or information previously Sec.30-9-60, Drop Box submitted to the Board of County Commissioners concerning this matter may be examined in the Sec.30-9-70. Stepdown/Relief Line • office of the Clerk to the Board of County Commissioners,located within the Weld County Adminis- Sec.30-9-80. Wastewater Pumping and Dosing Siphon Systems tration Building,11500 Street,Greeley,Colorado,between the hours of 8:00 am.and 5:00 p.m., Sec.30-B-90. Surface Activity Monday Vim Friday,or may be accessed through the Weld County Web Page Sec.30-9-100.Grease Interceptor Tanks(www.co.weld.co.us). E-Mail messages sent to an individual Commissioner may not be included in ARTICLE XDESIGN CRITERIA-SOIL TREATMENT AREA the case file. To ensure inclusion of your E-Mail correspondence into the case file,please send a Sec.30-10-10. Soil Treatment Area General copytoegesick@co.weld.co.us. - Sec.30-10-20. Calculation of Infiltrative Surface pf Soil Treatment Area• ORDINANCE NO. 2013-13 Table 30-10-1 Soil Treatment Area Long-term Acceptance ORDINANCE TITLE: IN THE MATTER OF REPEALING AND REENACTING IN ITS ENTIRETY,' Rates by Soil Texture,Soil Structure,Percolation CHAPTER 30 SEWAGE SYSTEMS,OF THE WELD COUNTY CODE Rate and Treatment Level EFFECTIVE DATE:July 1,2014 - Sec.30-10-30.-Allowable Soil Treatment Area Reductions and Increases BOARD OF COUNTY COMMISSIONERS Areas Table 30-10-2 Size Adjustment Factors for Methods of Application in Soil / Treatment WELD COUNTY,COLORADO Table 30-10-3 Size Adjustment Factors for Types of Distribution Media in Soil Treatment DATED: January 24,2014 Areas PUBLISHED: January 30,2014,in the Greeley Tribune Sec.30-10-40. Design of Distribution Systems _ . Sec.30-10-50. Alternating and Sequencing Zone Systems Sec.30-10-60. Dosing, CHANGES MADE TO CODE ORDINANCE 2013-13 ON FINAL READING Sec.30-10-80.080. Lift Stations -- Soil Replacement Sec.30-10-90.XID IGNs- - CAGESY 30 SRTICLE General CRITERIA-HIGHER LEVEL TREATMENT SYSTEMS SEWAGE SYSTEMS Sec.30-11-10. General' Sec.30-11-20. Treatment WELD COUNTY DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT Sec.30-11-30, Sand Filters Levels terse - _• ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS Sec.30-11-40. Rodk Plant Filter(Constructed Wetland)Treatment Before a Soil Treatment Area Amend Table of Contents to read as follows: ,ARTICLE XIIDESIGN CRITERIA-OTHER FACILITIES TABLE OF CONTENTS Sec.30-12-10, Wastewater Remaining After Separation of Toilet Wastes Sec.30-12-20. Evapotranspiration and Evapotranspiration/Absorption Systems ARTICLE AUTHORITY Table 30-12-1 Gradation of Wicking Sand for Evapotranspiration Beds Sec.30-1-10. Title - Sec.30-12-30. Wastewater Ponds Sec. 40. Vaults and Vault Privies Sec.30-1-20. Jurisdiction,Severability,Savings Clause Sec.30-12 Sec.30-1-30 Effective Date 50, Incinerating,Composting and Chemical Toilets Sec.30-12-60, Treatment Systems Other Than Those Discharging Through a ARTICLE II SCOPE AND PURPOSE Sec.30-2-10. Declaration Soil Treatment Area or Sand Filter System Sec.30-& — .ARTICLE XIIIOPERATION AND MAINTENANCE 20. Purpose Sec.30-13-10. Responsibility Sec.30-2-30. Effluent Discharged to Surface Waters Sec.13-13-20, Service Label ARTICLE IIIDEFINITIONS Sec,30-13-30. Monitoring 'Sampling Sec.30-3-10. Definitions Appendix 30-ATEXTURAL TRIANGLE DEFINING TWELVE TEXTURAL CLASSES OF SOIL OF Table 30-3-1 Abbreviations and Acronyms THE USDA ARTICLE IV ADMINISTRATION AND ENFORCEMENT Appendix 30-BSOIL CLASSIFICATION SYSTEM(SOIL(SEPARATE SIZE LIMITS) Sec.30.4-10, General Sanitation Requirements Appendix 30-CANNUAL FREE WATER SURFACE EVAPORATION MAP OF WELD COUNTY Sec.30.4-20. Existing OWTS Review ADAPTED FROM NOAA RR NWS 33 Sec.30-4-30. Permit Application Requirements and Procedures Sec.30-4-40. Determination of Compliance of Permit Submission Add Sec.30-1-30. Effective Date Sec.30-4-50..Denial of Permit Application, Upon adoption,the On-site Wastewater Treatment System Regulations shall become effective Sec.30-4-60. Access to Site upon the first day of July,2014. Until the first day of July,2014,Chapter 30 Code provisions in Sec.30-4-70. Notification and Inspection Stages effect prior to the changes contained in the On-site Wastewater Treatment System Regulations Sec.30-4-80. Final Approval of OWTS Permit shall remain in effect.Sec.30-4-90. Systems Employing New Technology - • Sec.30-4-100.Experimental Systems • Amend Sec.30-3-10,Definitions,to mad as follows: Sec.30-4-110.Systems Contractor License 'Competent technician°means a person designated by the Division who is able to conduct and Sec.30-4-120.Regulations of Systems Cleaners interpret the results of soil profile test pit excavations,profile holes,percolation tests,and site eval- Sec.30-4-130.Variance Procedure uations. Sec.30.4-140.General Prohibitions Sec.30-4-150,Prohibition of On-Site Wastewater Treatment Systems ' Amend ARTICLE X,DESIGN CRITERIA-SOIL TREATMENT AREA;to correct Section in Unsuitable Areas • numbering Sec.30-4-160.Enforcement Sec.30-4-170.Penalties Amend the Ordinance Resolution to incorporate the following text: BE IT FURTHER ORDAINED ARTICLE VSITE AND SOIL EVALUATION by the Board that the effective date of the changes to Weld County Code Chapter 30 contained Sec.30-5-10. Site and Soil Evaluation General Requirements herein shall be the first day of Jul 2014,and until the first day of Jul 2014,the provisions of Sec.30-5-20. Preliminary Investigation _Weld County Code Chaptr 30 in effectprior to the changes contained herein shall remain in effect. Sec.30-5-30. Reconnaissance - •Sec.30-5-40. Detailed Soil Investigation Amend the Effective Date to be July 1,2014,rather than February 3,3013, Sec.30-5-50. Percolation Holes,Profile Holes,and Profile Test Pits Excavations-Marking The Tribune Sec.30-5-60. Report and Site Plan • January 30,2014 Sec.30-5-70. Design Document Sec.30-5-80. As-Built Drawings, i Sec.30-5-90. Site•Protection • Sec.30-5-100.Qualifications for a Competent Technician ARTICLE VIWASTEWATER FLOW AND STRENGTH • Sec.30.6-10. Wastewater Flows Table 30-6-1 Single-Family Residential Design Flows Table 30-6-2 Estimate of Average Daily Wastewater Flow and • BOD5 Load Per Person Unless Otherwise Noted Sec.30-6-20, Wastewater Strength Table 30-6-3 Treatment Levels ARTICLE VIIMINIMUM DISTANCES BETWEEN COMPONENTS OF AN ON-SITE WASTEWATER TREATMENT SYSTEM AND PHYSICAL FEATURES Sec.30-7-10. Minimum Horizontal Distances Sec,30-7-20, Dry Gulches,Cut Banks and Fill Areas Sec.30-7-30. On-site Wastewater Treatment System Design Consideration Soil Treatment Area Table 30-7-1 Minimum Horizontal Distances in Feet Between • Components of an On-Site Wastewater Treatment System Installed After November 15,1973 and Water, Physical and Flealth Impact,Features Table 30-7-2 On-site Wastewater Treatment System Design Consideration and Treatment Requirements-Separation Distances from Soil Treatment Area ARTICLE VIIIDE5IGN,CRITERIA-GENERAL Sec.30-8-10. Performance Sec.30-8-20. Reliability Sec.30-8-30. Accessibility for Inspection,Maintenance,and Servicing Sec.30-8-40. Plumbing Codes Sec.30-8-50. Electrical Equipment Sec.30-8-60. Indicators of Failufe or Malfunctioning for Systems - Utilizing Mechanical Apparatus Sec.30-840, Sampling Access Sec.30-8-80, Component Operating Instructions Sec.30-8-90. Surface Activity Sec.30-8-100.Flootlplains • Sec.30-8-110. Business Commercial,Industrial,Institutional or Multi-Family DwellingWastewater Systems NOTICE OF SECOND READING OF ORDINANCE Pursuant to the Weld County Home Rule Charter, Ordinance Number 2013-13 was introduced on first reading on December 9, 2013, and a public hearing and second reading was held on December 30, 2013, with changes being made as listed below. A public hearing and third reading is scheduled to be held in the Chambers of the Board, located within the Weld County Administration Building, 1150 O Street, Greeley, Colorado 80631, on January 20, 2014. All persons in any manner interested in the next reading of said Ordinance are requested to attend and may be heard. Please contact the Clerk to the Board's Office at phone (970) 336-7215, Extension 4225, or fax (970) 352-0242, prior to the day of the hearing if, as a result of a disability, you require reasonable accommodations in order to participate in this hearing. Any backup material, exhibits or information previously submitted to the Board of County Commissioners concerning this matter may be examined in the office of the Clerk to the Board of County Commissioners, located within the Weld County Administration Building, 1150 O Street, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru Friday, or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail messages sent to an individual Commissioner may not be included in the case file. To ensure inclusion of your E-Mail correspondence into the case file, please send a copy to egesick@co.weld.co.us. ORDINANCE NO. 2013-13 ORDINANCE TITLE: IN THE MATTER OF REPEALING AND REENACTING IN ITS ENTIRETY, CHAPTER 30 SEWAGE SYSTEMS, OF THE WELD COUNTY CODE DATE OF NEXT READING: January 20, 2014, at 9:00 a.m. BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO DATED: January 3, 2014 PUBLISHED: January 8, 2014, in the Greeley Tribune CHANGES MADE TO CODE ORDINANCE #2013-13 ON SECOND READING In addition to the changes detailed below, revisions were made throughout to correct punctuation, capitalization, spacing, outline structure and typographical errors. Amend Sec. 30-1-20.F, Jurisdiction, Severability, Savings Clause, to read as follows: F. Chapter Coverage: These Regulations adopted by the Weld County Board of Public Health, pursuant to current On-site Wastewater Treatment System Regulations of the Colorado Department of Public Health and Environment, Water Quality Control Commission, Regulation #43 (5 CCR 1002-43) and adopted in compliance with Section 25-10-104, C.R.S., shall govern all aspects of permits, performance, location, construction, alteration, installation, and use of Onsite Wastewater Treatment Systems of less than 2,000 gallons per day design capacity. Site ofO/5-3546 approval and a discharge permit from the Water Quality Control Division are required for a system with design capacity greater than or equal to 2,000 gallons per day average flow. Amend Sec. 30-2-10.B, Declaration, to read as follows: B. This regulation shall apply to On-site Wastewater Treatment Systems as defined in Article Ill of this Chapter 30. Amend Sec. 30-2-20, Purpose, to read as follows: The purpose of this regulation as authorized and required by the OWTS Act, Section 25- 10-101, et seq., C.R.S., is to establish minimum standards for the location, design, construction, performance, installation, alteration and use of OWTS within the County of Weld, including but not limited to permit application requirements; requirements for issuing permits; the inspection, testing, and supervision of installed systems; the maintenance and cleaning of systems; transportation and final disposal of sewage materials; the control of systems contractors and systems cleaners of such systems; and issuance of cease and desist orders. This Regulation meets or exceeds the requirements of the regulations adopted by the Colorado Department of Public Health and Environment, Water Quality Control Commission pursuant to Section 25-10- 104, C.R.S. Amend Sec. 30-3-10, Definitions, as follows: Delete the definition of"Commission". Amend "Domestic Sewage Treatment Works" to read: "Domestic Sewage Treatment Works" means a system or facility for treating, neutralizing, stabilizing, or disposing of domestic wastewater which system or facility has a designed capacity to receive 2,000 gallons of domestic wastewater per day or more. The term "domestic wastewater treatment works" also includes appurtenances to such system or facility such as outfall sewers and pumping stations and to equipment related to such appurtenances. The term "domestic wastewater treatment works" does not include industrial wastewater treatment plants or complexes whose primary function is the treatment of industrial wastes, notwithstanding the fact that human wastes generated incidentally to the industrial process are treated therein. Section 25-8-103 (5), C.R.S. Amend "Field performance testing" to read: "Field performance testing" means data gathering on a system in actual use that is being proposed for Water Quality Control Division acceptance. Amend "Floodplain (100-year)" to read: "Floodplain (100-year)" means an area adjacent to a stream which is subject to flooding as the result of the occurrence of a one hundred (100) year flood, and is so adverse to past, current or foreseeable construction or land use as to constitute a significant hazard to public or environmental health and safety or to property or is designated by the Federal Emergency Management Agency (FEMA) or National Flood Insurance Program (NFIP). In the absence of FEMA/NFIP maps, a professional engineer shall certify the flood plain elevations. Amend "OTWS" to read: "OWTS Act" means the On-site Wastewater Treatment System Act, Section 25-10-101, et seq. C.R.S. Amend "Professional engineer" to read: "Professional engineer" means an engineer licensed in accordance with Section 12-25-101, et seq., C.R.S. Amend "Professional geologist" to read: "Professional geologist" means a person who is a graduate of an institution of higher education which is accredited by a regional or national accrediting agency, with a minimum of thirty semester (forty-five quarter) hours of undergraduate or graduate work in a field of geology and whose post-baccalaureate training has been in the field of geology with a specific record of an additional five years of geological experience to include no more than two years of graduate work. Section 23-41-208, C.R.S., and Section 34-1-201, C.R.S. Amend "Strength, wastewater" to read: "Strength, wastewater" means the concentration of constituents of wastewater or effluent; usually expressed in mg/L. Amend "Suitable soil" to read: "Suitable soil" means a soil which will effectively treat and filter effluent by removal of organisms and suspended solids before the effluent reaches any highly permeable earth such as jointgs in bedrock, gravels, or very coarse soils and which meets percolation test or soil test pit excavation requirements for determining long-term acceptance rate and has a vertical thickness of at least four feet below the bottom of the soil treatment area unless the treatment goal is met by other performance criteria. Amend "Water Quality Control Commission" to read: "Water Quality Control Commission" State of Colorado Commission created by Section 25-8-201, C.R.S. Amend "Water Quality Control Division" to read: "Water Quality Control Division" means the division of the Colorado Department of Public Health and Environment. Amend Sec. 30-4-10, General Sanitation Requirements, to read as follows: A. The owner of any structure where people live, work, or congregate shall ensure that the structure contains an adequate, convenient, sanitary toilet and sewage system in good working order. Under no condition shall sewage or effluent be permitted to be discharged upon the surface of the ground, or into State Waters, unless the sewage or effluent meets the minimum requirements of these Regulations or the water quality standards of the Colorado Water Quality Control Commission, whichever are applicable. Any person who is aware of a malfunctioning OWTS is encouraged to report the location of the system to the Division. Amend Sec. 30-4-20.B, Existing OWTS Review, to read as follows: B. The owner shall provide a pumping receipt from a Weld County licensed systems cleaner, a tank inspection report for evaluation of existing systems for loan approval inspections and any other inspections deemed necessary by the Division. The tank must have been inspected and pumped within the last two (2) years of the existing system evaluation request. Amend Sec. 30-4-30, Permit Application Requirements and Procedures, to read as follows: A. Prior to installing, altering, or repairing a system, the applicant must obtain a permit from the Division. B. An applicant must submit a complete application that is consistent with Section 30-4- 40.C. to the Division prior to installing, altering or repairing a system. C. Minimum Permit Application Requirements: 1 through 13 - No change. 14. Other information, data, plans, specifications and tests as required by the Division, including, but not limited to: a through c- No change. D. After receiving an application for an OWTS permit, the application shall be reviewed by the Division and an inspection shall be made by the Environmental Health Specialist consisting of: 1 through 3 - No change. E. Permit Fees 1. A permit fee, as set by the Board of Weld County Commissioners, shall be required of applicants for the installation, alteration or repair of an OWTS, payable at the time the application is received. Permit fees are non-refundable except as specifically provided in E.3. of this Section. Permit applications are non-transferable. The issuance of a permit does not denote approval of any zoning subdivision or building code requirements. 2. The Weld County Board of Public Health and/or the Division, may make provision for the waiver of any permit fee normally required for an OWTS. 3a through 3.b - No change. F - No change. G. Permit Term. 1. If both a building permit and an OWTS permit are issued for the same property, and construction is not commenced prior to the expiration date of the building permit, the OWTS permit shall expire at the same time as the building permit. If an OWTS permit is issued for property on which no building permit is required, the OWTS permit shall expire one year after the permit's issuance, if construction is not commenced. 2. Any change in plans or specifications after the permit has been issued invalidates the permit unless written approval is secured from the Division Representative for such changes. Expired permits can only be renewed by payment of the permit fee and only if there has been no change in the plans and specifications of the proposed system as set out in the original application; or such change is reviewed and approved by a Division Representative. H. Repair Permit 1. The Division may issue a repair permit and an emergency use permit to the owner or occupant of property on which a system is not functioning properly. Application for a repair permit shall be made by such owner or occupant to the Division within two business days after receiving notice that the system is not functioning in compliance with the OWTS Act, or applicable sections of these Regulations adopted thereunder, or otherwise constitutes a nuisance or a hazard to public health. 2. The permit shall provide for a reasonable period of time within which repairs shall be made. At the end of that period the system shall be inspected by this Division to ensure it is functioning properly. Concurrently with the issuance of a repair permit, the Division may issue an emergency use permit authorizing continued use of a malfunctioning system on an emergency basis for a period not to exceed the period stated in the repair permit. Such an emergency use permit may be extended, for good cause shown, in the event repairs may not be completed in the period stated in the repair permit through no fault of the owner or occupant and only if the owner or occupant will continue to make repairs to the system. Remainder of Section - No change. Amend Sec. 30-4-40, Determination of Compliance of Permit Submission, to read as follows: A. A determination shall be made by an Environmental Health Specialist after review of the application, site and soils evaluations, assumptions and calculations, design of the proposed OWTS test results, and other required information, whether the proposed system is in compliance with the requirements of these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder. A permit may be issued by the Division Representative if the proposed system is determined to be in compliance with the requirements of these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder. B. After reviewing all required information, the Division may give conditional approval for a permit for the proposed OWTS, or it may recommend disapproval of the application and denial of the permit if the proposed system cannot be made to comply with these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder. Written notice of the denial of a permit or disapproval of plans shall be served upon the applicant as provided by the Colorado Rules of Civil Procedure or by certified mail, return receipt requested. Service by mail shall be complete upon receipt by the Division of the return receipt. Any applicant whose permit application has been denied may request review of the application by the Board of Public Health as provided in Section 30-4-50. The conditional approval shall set forth conditions precedent to the issuance of a permit including effluent testing, cleaning or maintenance schedules, or other special conditions. No permit shall be issued to the applicant or to a subsequent owner until the conditions have been met. C. No permits shall be issued for the following systems unless they are designed by a professional engineer, and until they have been reviewed and approved by the Board of Public Health: 1. Experimental systems; 2. Treatment systems other than those discharging through a soil treatment area or a sand filter system. Amend Sec. 30-4-50.D, Denial of Permit Application, to read as follows: D. Should the Board of Public Health deny an appeal under this Section 30-4-50, the applicant shall have the right to appeal such decision to the Weld County Board of County Commissioners pursuant to Section 3-8(4)(n) of the Weld County Home Rule Charter and the procedures promulgated thereunder. Amend Sec. 30-4-100, Experimental Systems, to read as follows: A. Except for designs or types of systems which have been approved by the Water Quality Control Division pursuant to Section 25-10-108 (1), C.R.S., the Board of Public Health may approve an application for a type of system not otherwise provided for in this regulation, only if the system has been designed by a professional engineer, and only if the application provides proof of the ability to install a replacement OWTS in compliance with all local requirements in a timely manner in the event of a failure or malfunction of the experimental system. Remainder of Section - No change. Amend Sec. 30-4-110.0.3, Systems Contractor License, to read as follows: 3. A person who has previously had a systems contractor license revoked may be denied issuance of a new license by the Board of Public Health. Amend Sec. 30-4-130.F, Variance Procedure - Right to Appeal, to read as follows: Should the Board of Public Health deny a variance under this Section, the applicant shall have the right to appeal such decision to the Weld County Board of County Commissioners pursuant to Section 3-8(4)(n) of the Weld County Home Rule Charter and the procedures promulgated thereunder. Amend Sec. 30-4-170, Penalties, to read as follows: A. Any person who commits any of the following acts or violates any of the provisions of this Section commits a Class 1 petty offense as defined in Section 18-1.3-503, C.R.S.: 1. Constructs, alters, installs, or permits the use of any OWTS without first having applied for and received a permit as provided for in these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder; 2. Constructs, alters, or installs an OWTS in a manner which involves a knowing and material variation from the terms or specifications contained in the application, permit or variance; 3. Violates the terms of a cease and desist order that has become final under the terms of Section 25-10-106 (1) (k), C.R.S.; 4. Conducts a business as a systems contractor without having obtained the license provided for in these Regulations and the OWTS Act and any ther applicable rules and regulations adopted thereunder; 5. Conducts a business as a systems cleaner without having obtained the license provided for in these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder; 6. Falsifies or maintains improper records concerning system cleaning activities not performed or performed improperly; or 7. Willfully fails to submit proof of proper maintenance and cleaning of a system as required by these Regulations and the OWTS Act and any other applicable rules and regulations adopted thereunder. Amend Sec. 30-5-20, Preliminary Investigation, to read as follows: A. A preliminary investigation shall review documented information relative to the site and anticipated conditions. Information gathered as part of the preliminary investigation shall include, but is not limited to: 1. Property Information: a. Address; b. Legal description; c. Existing structures; and d. Location of existing or proposed wells on the property. 2. Existing Division OWTS records. Remainder of Section - No change. Amend Sec. 30-5-50, Percolation Holes, Profile Holes, and Profile Test Pits Excavations — Marking, to read as follows: The percolation holes, profile holes, and profile test pit excavations must be flagged or otherwise marked to allow easy location by others. Percolation holes and profile holes must remain open until after evaluation by the Division. The profile test pit excavations may be backfilled after evaluation by the third party professional {professional engineer, geologist, competent technician, or other similar professional}. If the profile test pit excavation is backfilled prior to inspection by the Division, a monitoring port shall be installed prior to backfilling for evaluation by the Division. Amend Sec. 30-5-80, As-Built Drawings, to read as follows: Scale drawing shall be provided by the systems installer showing the OWTS as installed, including its location from known and findable points, dimensions, depths, sizes, manufacturers' names and models as available, and other information relative to locating and maintaining the OWTS components. Amend Sec. 30-6-20.A, Wastewater Strength, to read as follows: A. Table 30-6-3 includes levels of treatment that can be achieved by various OWTS components, excluding the soil treatment area. Systems qualifying for these treatment levels except TL1 produced by a septic tank alone must be approved by the Water Quality Control Division under Section 43.13. of OWTS Regulation #43. Amend Sec. 30-8-30, Accessibility for Inspection, Maintenance, and Servicing, to read as follows: A. Septic tanks shall have risers over each access manhole and all risers shall extend to or above final grade. B. Each treatment component of an OWTS other than the septic tank and soil treatment area shall be equipped with access manholes with risers that extend to or above final grade, located to permit periodic physical inspection, collection and testing of samples and maintenance of all components and compartments. C. Riser Lids 1. Each riser lid brought to the surface shall have a secure closing mechanism, such as a lock, special headed bolts or screws, or sufficient weight to prevent unauthorized access. Remainder of Section - No change Amend Sec. 30-8-50.A, Electrical Equipment, to read as follows: A. All electrical work, equipment, and material shall comply with the requirements of the locally enforced code. A local electrical permit may be required. Amend Sec. 30-8-60, Indicators of Failure or Malfunctioning for Systems Utilizing Mechanical Apparatus, to read as follows: A signal device shall be installed which will provide a recognizable indication or warning to the user that the system or component is not operating or is operating but malfunctioning. This indication or warning shall be a visual signal or an audible signal or both and shall be located in a centralized area within visual and audible range of the system user. A signal or message may also be sent remotely to a maintenance provider. Amend Sec. 30-8-100.A, Floodplains, to read as follows: A. New OWTS and replacement OWTS installed in a 100-year floodplain shall meet or exceed the requirements of the Weld County Flood Plain Management Ordinance contained in Chapter 23 and the Federal Emergency Management Agency. Repairs of an existing system shall meet the requirements as feasible. The system as approved by the Division shall be designed to minimize or eliminate infiltration of floodwaters into the system and discharge from the system into the floodwaters. The Division has available a floodplain guidance document. Amend Sec. 30-9-20.E.3, Septic Tanks, to read as follows: 3. Certification by a professional engineer must be submitted to the Water Quality Control Division for acceptance. Amend Sec. 30-9-80.C.2, Wastewater Pumping and Dosing Siphon Systems, to read as follows: 2. The second compartment of the septic tank shall not be used as the pump tank unless it can be demonstrated to the satisfaction of the Division that the minimum 48-hour detention time will not be decreased and the pump is screened or provided with an approved filtering device to assure that only liquid effluent will be discharged. Amend Sec. 30-10-10.B, Soil Treatment Area General, to read as follows: B. At proposed soil treatment area locations where any of the following conditions are present, the system shall be designed by a professional engineer and approved by the Division. Add Sec. 30-11-30.B.4.f, Sand Filters, to read a follows: f. If the thickness of the sand is at least two feet, the treatment level for mounded sand filters is TL2 and it does not need an additional two-foot unlined sand filter. Amend Sec. 30-11-30.C.2, Sand Filters, to read a follows: 2. A minimum four-inch diameter under-drain pipe must be used. The under-drain pipe must be surrounded by washed coarse screened gravel or crushed stone. All of the gravel or stone must pass a 2 1/2-inch screen and must be retained on a 3/4-inch screen. Manufactured media may be used as an alternative to gravel or stone. Filter media effective size (D10) must range from 1.0 to 1.50 mm and the uniformity coefficient (D60/D10) must be less than 4.0. Fines passing a 200 mesh sieve must be less than one percent. Affidavit of Publication STATE OF COLORADO ss. County of Weld, I Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley,in said county and state; that the notice or advertisement, of which the umexed is a true copy, has been published in said daily newspaper for consecutive(days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Eighth day of January A.D. 2014 and the last publication thereof: in the issue of said newspaper bearing the date of the Eighth day of January A.D. 2014 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. January 8, 2014 Total Charges: $120.00 8th day of Janua 2 14 My Commission Expires 6/14/2017 ROBERT LITTLE NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20014018494 MY COMMISSION EXPIRES JUNE 14,2011 % NOTICE OF Ponelnmsllln,o m.to eppu=am tun SECOND READING OF ORDINANCE °t apelmnirom me DlMAanil,nnp,w.9vmd,g,-1x10 ¢9599.,,anew or means an ov✓rsmemannerwmrn[wolves Els999,1,9 the nl600990Hom°Rule Chvl3r,00199=9 Nab 5011-13 599 hmll mplekap°li[atlonthsl lsmnxlxkmvnln. capnl2permllo and 2 varal^aah°n from one mrm50 dcs Spotlllmrionz cnnlslbea intbe 11 introduced on first e D d ^ cop- g. nngasystem. below ob 2,9 o b 9 ond reedIng ma boll o o cember r9 sEb a C 'C- 66 019Vrene°21n9 orrep the ermxo em 6 nOgoxx m mth°lhe 1 IPI. S: !1°J Sow.wEbin 9,9 weld Cost"'Sthrthsrebon 9469699.6090 5 2'669090.666959 g a9966619 995 '16996- eolm999s ark ry36 as werwdby z lobMesethese e0NMee4 tie OWEES1 and awry the,arl:Eh PleaSe..n.Ct the Cle.le Erie c,an,rs office at phone 4255.or ras 01 {WO) 1 a 3 a b mcut S.W.ana o, ere°^ C ta i as It ° ry n C ryy ^m+ OWRp° 5. provided L nz b Regulations. m oWI5 PCr er we.any°0°h aptUmple the B el ep County I tl nsp¢°Uon x515 aae ny eEnvmmnvnlal °w y.. O Sp 9 9 Y 9 1 monde,02. 1 eerriell massages sent 10 an irshviduel s 20,22 lP0ner reseal g. 1 pa Y ¢aPp �4 bp 199199042n the 9999909 50 ensure sclusion or your E-MSI correepornience inio hereuneeS ORDINANCE P °y epsick@comeld.co.us E' F V rules end llabV h 1 IJ O tl Ty P ble O CEiiL .PRE O G ND NDE qC SIN T9 A by the rd lWltl Ov I I T rill lons adopted n EN! HAFIEq s 6TEMs 0 0OVN DE b pp WIS p y h A e.9 3 520 P 1 a 11 DATE 074 °6966°."99995 0°4100 a.m" n IpP 11 "rI .bar p q• 25 ry1 10 " Ivl tl IJ^ee ' 0I 6 ELO VN'fV COMM S50NEHS noe a es no de^o apprwel op°^1V zoning Sulks Lo°or bossing noellga 1°n she Ingo*bN Is not limiters n P lea Pree cry VV COMMM COLORADO co d° s. nu ry].ROIa Z'ede o1 permit county Seers of Whxc Xeallx enWorme 0iv1e51.maVmako I.r Properly Information. PVSLISHED;244272.2024.u2Ne oreelsy 1545¢ provki°emr Newaverdany°mold¢°nmmelly re°ulrealman OWlS. o" moms; 30112-018013.1o•No 4122,. b. L•2N48254ptio°; CHANGES MADE TO CODE ORDINANCE 2201343 ON 2110032 READING a 205_ 8415¢ c. 221513sw tlrrms; na Ip0u121225o.wap4s%81521.9 eng.11250 1(111 21 iyp1 02 51 58 0 11mn. rs 6"N Permit Term" 4 Leca on of existing er proposed wells on the°rgmrry. Am s z y s b e OWES ce - 1 z Versed', Is commenced poor n p11 nitil 9 OWES E Board W C 00 0Pl Wastewater they W 5 y YWew P 08m5 SP PY h ri b 9P 11 P I tl b -N M1 . P sC compliance1In CS 099999999191 nection A 9669 01 X9999 end 1005-43) e adopted 9291 SP Y II n P iaur 9P 1 Amend Sew - P P f 71 1 shall govorn all 25 10 permits.W 25 E M NI q VI . i sty 1 I I M1 1 p 127 p l y.Site Pp 2' Any B I Sono p dll 1 'Stylise r I n b 100 tl llso percolation I marked y rollio holes. 11 by 010 p ES. it OWevairons mils a a n(0 p X 2. TyO ID'-I 01 el y q d- L p ill Ill reel2501 Is se Y dl a II by y d p III helm o ll by the DF'I A° raersnIJ 0 • 20 2009 • V 011 . 2 Q 1 II n PI M1 p en, reel P ssional engineer,yp bath-filled comp by tlP 1 e A R BO a bl e tl M1 pal' rs°m changes pit all 1 etent technician.or other Smiler xon8 ry 9 Inn 2 0122 beck 1g for then by Ole DMso^. n p l a y°on arrrap men rap emcee ea approved DVL q°pmsen old. I 2,20 110225251124214120592511021 p P by O defined'n PncJo this rip er30 Pmena sec p0 2 ° Arnoldne 5eu Wass"she 102001s.m 082 l systems P517000.020104 as l°Mows. H The 0 ilonn me Issuepp YY q 2000 SAStl0avlrgseanbep them 05251 systems in 15250(2c4550 0 enR ep °IO.e.P5N& 20a�varerizm sneTay51114 by Inc OWTs raj24a= 01Prslrslb0m26k5p0 system 11999591^q 512ee21. amssses.olea cl5rers' amen and models es nvb°m 1nd822.� 1In0omabon 9 t OWFS os Y cM1 9 "rrg oIFS a vbns Wthrn the Coen,• V N 4 qk : P. 5 9 0 sOxle 020 1 nub a 9149m699 e sPM1 C dle flgul Am .30-9-22A.W 05090509 16696 9"6999999'9"9' 9 CS 66696 24 I" 0 adopted a or otherwise NSW M1 P. SSITS P vale 30-6-3 d en I keenest p IA,Sys tyla9 lair Ys 1 a hest 9 m4s be.wee,ws roe epnd MI fora reasonatia penal 1 wary 65199 OW t O yb n 0R" °P ray 01 alone must be 0Wi5002ue5wr443. Heellb° Environment.1Q 10 Cantor,' °9,0ES9 09999.999 of 0968 1 °n persae°la s m bl 1 g pp 477,0 Vwnn 5" µ W Mp y Sew.on 9 P 55th t I e0Se permit 8ods,l105s0ee t o woe'ed Amen0 Secs ows-so, m=. Tyr Inspection.M Servrcng.t7 read Amaral S05.50.340, P nee t herepl M1 rt S P 2r1l 5 use=spieit led"nPhemloanded, A.a 50220102k"v shell have^11122522.a e° risers Delete the Oelln 1°n°"Cbmns:on. erwe rough no lain Ion owner or 0Lapanl and°Nboth owner or o or b manhole occupant Will continue l°make rep°hv 17th°yslem. S Each inert¢ntMemponess den OWF011nm Pon the seed[lank end Amend tomesile Scwv O°Trovlmen tWOMSln read:'oom Desna ireeimenl. gpmel^der°IS22222,Necnx^go. cell l0 l20Int wee shell h°°qul5 001wlN access manholes Oh aware lM1elederdk Works"mean¢,sVsl1m orl011 llry to Vealin 802deg.sled13a190.er&shoeiinp vb Ilnal gratle,l°celetl r°permll peaotll[pnysl[al lnapocll°n,mllecllenaMl.f� of 53 galtale 004w,rer wnlery sysiorn aasl0lol capacity le rewNo IP9099901°00001alnlena^ce°tell=°,9599019°^e=°mewl.¢^Is. 2000,1 lav0lmm°cur,w19ewater per day or mare.The loll n°me;nc wastes,. mene sea A lole0.Calelml111401 al Campll52909anCe el Parmh 0220sub Kaalth05 del e.9 m 5e mennro x mmmnwp9eppanenen=exmiam irsem arkalnvaum ax eltotoi; c. Riiemude pmgludeasa°aloe°ulpmenl relallres°=n 105090ae[es. A. Athopronen°n shS16^msa°bV an Edm°°me°kl Health Speclalkl p ere tl°mo20l50l 2:elpls2w a0A,5Ptxvrk5/a°es°m 100• elna100l010222 1 etv°l the a1100eplimlien, dull-oveluallens,vsumpsens155 celeubb EaCh rlid brought W illa Sulam¢hall have a secure closing mech. dry N:Ml°n¢rn5 Veatmenl°II^a7Prk1 lnsrdexi9^dN-amp°utl OWR test ms°Ik a chew rry9.99a9E99,09, nl1 WWII ealleu-Petlal beaded bons o^news,or sor9Sonl weignllo Proven nonlnNaa,an3ennsraw 110 E man water generate Incidental's to Use wnamer teorwcx¢a :9M Is mm4issued l ems ES,the repwremems of these o m h.axao^2iB ( .." R q°atiwa end Pe0 S end V h p bl missend p qx ap tl "Ape b 1 tbm Is determined lobs in peel MsIo flp Wx ION q d sec' N g Dm. o ry. ese 9 ab Ispod a ee S°aly' d 1 tlma^3N OWi5A ark y th ppfpp ed 1 Vas 11^ eand o "ers&or h Nn 308b dM "F sL 0 Ant Air locally ed Akca n 1 e N n a 0001.1,r Pxnre500a l00001vns°n n AN c ell ° a y9 pe - 9ulrea am ESC,is ble[ c 09,61 esng tie amnbz 1l a deit the thepro per the Sol ay not Pe add to mA nasen.DO-30 Pdaorss iono aeor22(55olln not°r SystemsV m 11014 asm ands ab rsa past,currant orrosmesbmm1swo n Meek nth a DEEM 091 end 510101 em beldmes 12229 peI0asooiux.t°reap azroIlewa ° to consscute ane o so to to public or envlr°nme0am¢anx a Prrsada°°° 5Manmxeaar 2220,2,24 ent 00121211002802050 nxlaeGro The.thsi.2st0,orstwnoMwolhnenll omm2rembm t le operas, per5 9 tioWeed topmpclly or l5 designated by he Federal Emergency Mbnslcmo^I 292241159bel„wes open by roll Pules 0 rignob.Tills rstln4 rye roaring shag he o eelS1ndo n c05(252 orNoS20l Flood&durance Program l FlPl. n%°,peen.°- 212 220„59 hyconnd°mni01nalUrn Iemi^ear°Netb n e by Mall Pules 2500ores- or both end she xocalwtmnarw°mmgi 7u b9 000°q'paalme le ranged Agency(FEW) m, pronsslc^al engineer mail certify line flood plain elevalmne. upon wb D PIasseska.Serv,ebani whoseuee1 ca/delom user, sigma omemnw@ay aro4.11P memotelyoaalMaran • P h,epon receipt lee meanon loeroamreee00 elIl a^InsBerdI(0 no slalom user. slgnal7rmesmpe meVab°4oebnl remotely IIameiMeneru7el Amenl'O]WS'Ia roc0:'DwrsAa259.9.0.-e Omxno wasimvaler Trevlmom oo IieHenth has adoontles le seyawsxl rom°wenn7 lEssel apprvals all Ia°I Ow syslem lwr.se=oaN zst0.101,¢r xeg C.qE cona=HSpreca 1eee le section 3aa.pen T11[onpmm�alapprwalabcle III ng or co2alena^rcsefedutes.Om oau°rc7ela1ennll 101.Nlng o permit mlm0,1 1 Amend Soc.NOewt00A,wier relp00^s,teni tlsErS Install Am¢^e'Preleesl°geleonglneeftreed. 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Sewing 3410 0RS. °asuere ireevnenlry ems 212 an Ps04255210:0,swoosh,wed VeaMent 56164099-�92.E.66E°91-99'6, 61666 r Submitted wooer a wand Fersysem" Pra ryCont ms cn forIfficagon r al ni ee p silo ¢ °M_WEsr a 5la,01lls° v°P 2000J sre°gt 0waef tea tie mrcenrz Amends-"34-1.82.0.0eniW01Pe122 A°°Itwricn,0°read as 050025; D aM¢Ptnm gaga CminS Siphm5yslems,r°rsa tin^°fc°nnr Iwaslovalererellluenf.muelly°rpresseu inmOM1. D. Should to Boarder FOIE Heath deny an appeal ^a:Ms5Mkn049711,:;c. 200Mssec.30.0-8002,Wsstewater oilmen Amend'Suitable ma'Ie reva'.'Sullable ielpm¢ansesmllM¢%wal ellecrlwl treat 30--50.Pe°pp CmN Shall have the rlOMtoappeal s deosloo to Ina Weld County 2s 1° 1 The semnemmpannem°Ilne oe npreiiOerelaa°toy removal-809=Msms one 03500dedmiesbefore Pa eau. xamna1 County °m mkmrsParsuenMm sm93-00)(n)m el CeunlY Oumpl,nM5-essn can be eem°aaatee lathe 20512202n 25005100,1 P52550 am 9 purr^a°Mo with such azloinys l°bald- lravel,7r very Pure Char'and hereunder. minlmum A0 Ileur Jelention nmdavll gel tie tl,v220049ne 159 Wane reaches meet pertelari°ntesl°-1061 test pit excavation0gmm0ornx pma see..3w-IOq E.Pefimenlel0y a pdwmmwltn en approved filtering PPmP I55neeNemw xl9� Lceptancem°tl and has as venimlrn0nex-20bosldm°r vmm�mmr 96991vll°ds dmmma°e. gaemwmexar°con only liquid empemwume innll0 010512 ollr e^area el 90oar. Y Eme811°12 vel1n1 972000-Syn°mswnlm bow bltl, eY reel ¢pone Me 021611°n°x 1e WMm0(lsh OMet°pmnvanpt5om1cn x5.10-108(1.C.Hs..Moe /intend sea 00-10.10.2.soh Treatment Awe Ob2emll road as 101102s: PI sPe Vea " BeaN or publicHeallp may apOnmva on pppll[vnen l°00121 10,00 by pe01lemlae 0. At prOpcsed syNtoalrrienlbees recedes;wham 055anVol lire following A-loll Waled Ouvliry Control C071105°n"-reap"Water Oualily Control provided lert1So r°9 ylitho eVete nee cleslgneb by a pmlesclenel centllll°Ps ox orient the system spathe designee by a p9loml°Pe1¢^plow.end Cemr^i551°P"St 8co,,atlo L°mmistl°n=reatua py 5e-Ale.01,c.R.6. engineer.end only a the applies!.provides prod of the rally to lnrell a replace- veered¢ty he David¢,. e9,995999599 In Compliance with 0WI 8714)requirements Ina timely manner In one event Am•nd'Wa 904111 Co eatl'. YC 1Owls°n' 01 9199919 r 17995990 M1e Ovpeh .9195slem. 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Amend 5¢20.30"1200,Ev 91(59 OW TS 0520,to re®Optaz follower Aend 2223Di-tenon°woo°s,lnnm501110(1ews'. 0 pm5550520eonan olslso5ldos°nry on m 0 in°r0y2,2 - gaYllnmelailpelnd A. kl Y1p Ycll °yal he J,nuery0,2014 mlemx n¢ann wl"mm0palm^re &ir m p I6I°w:a aatawyl rata990199o5endlnoelsed Inspections 995Pursp04deemed tnecessary 0.1 the Division. 489.3°CRSI58¢ 1pn°emmmalal¢5elpeln ollan a4red°lo se°nom9. tank con 9apuo5l, mP59peewuhmha con two Yive,m come az eforarM,9b.a meau5 ePowored f use Intro. eUraltnS en llrsl - oienssees4-1"'EthiS 95669 e¢perm',Apm1.sa0n Requlsme^k and Proeeauree,m rood EIS Q spelled are[°Neap lnxwwmea mnsWooed dereundes the pow °vin"$aa2a9a any aher.ppumbP rules aria kaatnani Wooled P.euna¢l: • WELD COUNTY CODE ORDINANCE 2013-13 IN THE MATTER OF REPEALING AND REENACTING IN ITS ENTIRETY, CHAPTER 30 SEWAGE SYSTEMS, OF THE WELD COUNTY CODE BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF THE COUNTY OF WELD, STATE OF COLORADO: WHEREAS, the Board of County Commissioners of the County of Weld, State of Colorado, pursuant to Colorado statute and the Weld County Home Rule Charter, is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS, the Board of County Commissioners, on December 28, 2000, adopted Weld County Code Ordinance 2000-1, enacting a comprehensive Code for the County of Weld, including the codification of all previously adopted ordinances of a general and permanent nature enacted on or before said date of adoption, and WHEREAS, the Weld County Code is in need of revision and clarification with regard to procedures, terms, and requirements therein. NOW, THEREFORE, BE IT ORDAINED by the Board of County Commissioners of the County of Weld, State of Colorado, that certain existing Chapters of the Weld County Code be, and hereby are, repealed and re-enacted, with amendments, and the various Chapters are revised to read as follows. CHAPTER 30 WELD COUNTY DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS TABLE OF CONTENTS ARTICLE I AUTHORITY 1 ARTICLE II SCOPE AND PURPOSE 2 ARTICLE III DEFINITIONS 3 ARTICLE IV ADMINISTRATION AND ENFORCEMENT 14 ARTICLE V SITE AND SOIL EVALUATION 26 ARTICLE VI WASTEWATER FLOW AND STRENGTH 34 ARTICLE VII MINIMUM DISTANCES BETWEEN COMPONENTS OF AN ON-SITE WASTEWATER TREATMENT SYSTEM AND PHYSICAL FEATURES 40 ARTICLE VIII DESIGN CRITERIA-GENERAL 44 ARTICLE IX DESIGN CRITERIA-COMPONENTS 47 ARTICLE X DESIGN CRITERIA-SOIL TREATMENT AREA 53 ARTICLE XI DESIGN CRITERIA-HIGHER LEVEL TREATMENT SYSTEMS 63 ARTICLE XII DESIGN CRITERIA-OTHER FACILITIES 65 ARTICLE XIII OPERATION AND MAINTENANCE 71 2013-3566 Appendix 30-A TEXTURAL TRIANGLE DEFINING TWELVE TEXTURAL CLASSES OF SOIL OF THE USDA 72 Appendix 30-B SOIL CLASSIFICATION SYSTEM (SOIL-SEPARATE SIZE LIMITS) 73 Appendix 30-C ANNUAL FREE WATER SURFACE EVAPORATION MAP OF WELD COUNTY ADAPTED FROM NOAA RR NWS 33 74 ARTICLE I AUTHORITY Sec. 30-1-10. Title The Regulations contained herein shall be known as the On-site Wastewater Treatment System Regulations ("Regulations"). Sec. 30-1-20. Jurisdiction, Severability, Savings Clause A. These Regulations are promulgated by the Weld County Board of County Commissioners under the authority of the Weld County Home Rule Charter, Section 3-8, acting as the Weld County Board of Public Health under authority of the Weld County Home Rule Charter, and upon the recommendation of the advisory Board of Public Health established pursuant to said Charter. B. If any section of these Regulations adopted hereunder or its application to any person or circumstance is held invalid, unconstitutional, void or inoperative, such holding shall not affect other provisions or applications of the ordinance adopted hereunder. The Board of Public Health and the Board of County Commissioners hereby declares that in this regard, the ordinance adopted hereunder is severable, and that said Boards would have adopted the remaining ordinance hereof notwithstanding such holding. C. The repeal of any Regulation adopted hereunder shall not deny any right, action, or cause of action, which arose under existing ordinances. D. The repeal and re-enactment of these Regulations shall not prejudice the prosecution of any violations under previous versions of these Regulations. E. The Board of County Commissioners hereby delegates these duties described herein to the Board of Public Health subject to the rights of appeal as outlined in these Regulations. F. Chapter Coverage: These Regulations adopted by the Weld County Board of Public Health, pursuant to current On-site Wastewater Treatment System Regulations of the Colorado Department of Public Health & Environment, Water Quality Control Commission, Regulation #43 (5 CCR 1002-43)and adopted in compliance with Section 25-10-104, C.R.S., shall govern all aspects of permits, performance, location, construction, alteration, installation, and use of onsite wastewater treatment systems of less than 2,000 gallons per day design capacity (Site approval and a discharge permit from the Colorado Department of Public Health and Environment, Water Quality Control Division are required for a system with design capacity greater than or equal to 2,000 gallons per day average flow). ARTICLE II SCOPE AND PURPOSE Sec. 30-2-10. Declaration A. In order to preserve the environment and protect the public health and water quality; to eliminate and control causes of disease, infection, and aerosol contamination; and to reduce and control the pollution of the air, land and water, it is declared to be in the public interest to establish minimum standards and regulations for On-site Wastewater Treatment Systems (OWTS) within the County of Weld and to provide the authority for the administration and enforcement of such minimum standards and regulations. B. This regulation shall apply to On-site Wastewater Treatment Systems (OWTS) as defined in section 25-10-103(12), C.R.S. Sec. 30-2-20. Purpose A. The purpose of this regulation as authorized and required by the OWTS Act is to establish minimum standards for the location, design, construction, performance, installation, alteration and use of OWTS within the County of Weld, including but not limited to permit application requirements; requirements for issuing permits; the inspection, testing, and supervision of installed systems; the maintenance and cleaning of systems; transportation and final disposal of sewage materials; the control of Systems Contractors and Systems Cleaners of such systems; and issuance of cease and desist orders. This Regulation meets or exceeds the requirements of the regulations adopted by the Colorado Department of Public Health & Environment, Water Quality Control Commission pursuant to Section 25-10-104, C.R.S. Sec. 30-2-30. Effluent Discharged to Surface Waters A. Any system that will discharge into surface waters must be designed by a professional engineer. The discharge permit application must be submitted for preliminary approval to the Board of Public Health. Once approved by the Board of Public Health, the application must be submitted to the Water Quality Control Division for review in accordance with the Water Quality Control Act, 25-8-101, et seq. C.R.S, and all applicable regulations of the Water Quality Control Commission. Compliance with such a permit shall be deemed full compliance with this Regulation. ARTICLE Ill DEFINITIONS Sec. 30-3-10. Definitions The following definitions shall apply in the interpretation and enforcement of these Regulations. The word "shall," as used herein indicates a mandatory requirement. "Absorption system" means a leaching field and adjacent soils or other system for the treatment of sewage in an On-site Wastewater Treatment System by means of absorption into the ground. See Soil treatment area. "Applicant" means a person who submits an application for a permit for an On-site Wastewater Treatment System. "Bed" means a below-grade soil treatment area consisting of a shallow excavation greater than three feet wide containing distribution media and more than one lateral. "Bedrock" means continuous rock that underlies the soil or is exposed at the surface. Bedrock is generally considered impervious, but if fractured or deteriorated, it may allow effluent to pass through without adequate treatment. "Biochemical Oxygen Demand, Five-Day" (BOD5) means quantitative measure of the amount of oxygen consumed by bacteria while stabilizing, digesting, or treating biodegradable organic matter under aerobic conditions over a five-day incubation period; expressed in milligrams per liter (mg/L). "Biochemical Oxygen Demand, Carbonaceous Five Day" (CBOD5) means quantitative measure of the amount of oxygen consumed by bacteria while stabilizing, digesting, or treating the organic matter under aerobic conditions over a five-day incubation period while in the presence of a chemical inhibitor to block nitrification; expressed in milligrams per liter (mg/L). "Board of Public Health" means the Advisory Board of Public Health as designated by the Board of County Commissioners pursuant to the Home Rule Charter. "Building sewer" means piping that conveys wastewater to the first system component or the sewer main. "Carbonaceous Biochemical Oxygen Demand" See Biochemical Oxygen Demand, Carbonaceous. "Cesspool" means an unlined or partially lined underground pit or underground perforated receptacle into which raw household wastewater is discharged and from which the liquid seeps into the surrounding soil. Cesspool does not include a septic tank. "Chamber" means an open, arch-shaped structure providing an open-bottom soil interface with permeable sidewalls used for distribution of effluent in a soil absorption system. "Chapter 30" means Chapter 30 of the Weld County code also known as the On-site Wastewater Treatment System Regulations. "Cleaning" means the act of removing septage or other wastes from a wastewater treatment system component or grease/waste from a grease interceptor. "Colorado Plumbing Code" means Examining Board of Plumbers Rules And Regulations (3 CCR 720-1). "Commission" means the Water Quality Control Commission created by section 25-8-201, C.R.S. "Competent technician" means a person designated by a local public health agency who is able to conduct and interpret the results of soil profile test pit excavations, profile holes, percolation tests, and site evaluations. "Component" means a subsection of an On-site Wastewater Treatment System; a component may include multiple devices. "Composting toilet" means self-contained waterless toilet designed to decompose non- water-carried human wastes through microbial action and store the resulting matter for disposal. "Consistence" means the degree and kind of cohesion and adhesion that soil exhibits and/or the resistance of soil to deformation or rupture under an applied stress. "Crest" means the highest point on the side of a dry gulch or cut bank. "Deep gravel system" means a soil treatment area for repairs only where the trenches utilize a depth of gravel greater than 6 inches below the distribution line and sidewall area is allowed according to a formula specified in this Regulation. "Department" means the Weld County Department of Public Health and Environment. "Design" means 1) the process of selecting, sizing, locating, specifying, and configuring treatment train components that match site characteristics and facility use as well as creating the associated written documentation; and 2) written documentation of size, location, specification and configuration of a system. "Design capacity" See Flow, Design. "Design flow" See Flow, Design. "Designer, On-site Wastewater Treatment System" means a practitioner who utilizes site evaluation and investigation information to select an appropriate OWTS and prepares a design document in conformance with this Regulation. "Distribution" means the process of conveying wastewater or effluent to one or more components, devices, or throughout a soil treatment area. "Distribution box" means a watertight component that receives effluent from a septic tank or other treatment unit and distributes effluent via gravity in approximately equal portions to two or more trenches or two or more laterals in the soil treatment area. "Division" means the Division of Environmental Health Services, Weld County Department of Public Health and Environment. "Division Representative" See Environmental Health Specialist. "Domestic wastewater" See Wastewater, domestic. "Domestic Wastewater Treatment Works" means a system or facility for treating, neutralizing, stabilizing, or disposing of domestic wastewater which system or facility has a designed capacity to receive 2,000 gallons of domestic wastewater per day or more. The term "domestic wastewater treatment works" also includes appurtenances to such system or facility such as outfall sewers and pumping stations and to equipment related to such appurtenances. The term "domestic wastewater treatment works" does not include industrial wastewater treatment plants or complexes whose primary function is the treatment of industrial wastes, notwithstanding the fact that human wastes generated incidentally to the industrial process are treated therein. 25-8-103 (5), C.R.S. "Dosing" means a high rate periodic discharge into a soil treatment area. "Dosing, demand" means configuration in which a specific volume of effluent is delivered to a component based upon patterns of wastewater generation from the source. "Dosing, pressure" means delivery of effluent under pressure to a component, device or to a soil treatment area for even distribution. "Dosing, timed" means a configuration in which a specific volume of effluent is delivered to a component based upon a prescribed interval, regardless of facility water use. "Dosing siphon" means a device used for demand dosing effluent; which stores a predetermined volume of water and discharges it at a rapid rate, from a tank at a given elevation to a component at a lower elevation, accomplished by means of atmospheric pressure and the suction created by the weight of the liquid in the conveying pipe. "Dosing tank" means a tank, compartment or basin that provides for storage of effluent from a septic tank or other treatment unit intended to be delivered to a soil treatment area at a high rate periodic discharge. "Drainfield" See Soil treatment area. "Drop box" means a device used for serial or sequential distribution of effluent by gravity flow to a lateral of a soil treatment area. "Dry gulch" See Gulch, dry. "Drywell" means an unlined or partially lined underground pit (regardless of geometry) into which drainage from roofs, basement floors, water softeners or other non-wastewater sources is discharged and from which the liquid seeps into the surrounding soil. "Effective Size" means the size of granular media such that not more than 10 percent by weight of the media is finer than the size specified. "Effluent" means the liquid flowing out of a component or device of an On-site Wastewater Treatment System. "Effluent filter" See Effluent screen. "Effluent line" means non-perforated pipe that conveys effluent from one On-site Wastewater Treatment System component to the next. "Effluent screen" means a removable, cleanable (or disposable) device installed on the outlet piping of a septic tank for the purpose of retaining solids larger than a specific size and/or modulating effluent flow rate. An effluent screen may be a component of a pump installation. An effluent screen may also be installed following the septic tank but before higher level treatment components or a soil treatment area. "Environmental Health Specialist" means a person trained in physical, biological, or sanitary science to carry out educational and inspectional duties in the field of environmental health. Also known as Division Representative. "Evapotranspiration/absorption system" means an unlined On-site Wastewater Treatment component that uses evaporation, transpiration, and absorption for dispersal of effluent. "Evapotranspiration system" means an On-site Wastewater Treatment component with a continuous, impermeable liner that uses evapotranspiration and transpiration for dispersal of effluent. "Experimental system" means a design or type of system based upon improvements or development in the technology of sewage treatment that has not been fully tested. "Failure" means damage to a system component, structural member or connection. "Field performance testing" means data gathering on a system in actual use that is being proposed for Colorado Department of Public Health & Environment, Water Quality Control Division acceptance. "Floodplain (100-year)" means an area adjacent to a stream which is subject to flooding as the result of the occurrence of a one hundred (100) year flood, and is so adverse to past, current or foreseeable construction or land use as to constitute a significant hazard to public or environmental health and safety or to property or is designated by the Federal Emergency Management Agency (FEMA) or National Flood Insurance Program (NFIP). In the absence of FEMA/NFIP maps, a Colorado professional engineer shall certify the flood plain elevations. "Floodway" means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one-half foot (6 inches) at any point or as designated by the Federal Emergency Management Agency or National Flood Insurance Program. In the absence of FEMA/NFIP maps, a professional engineer shall certify the floodway elevation and location. "Flow, daily" means the measured volume of wastewater generated from a facility in a 24- hour period expressed as gallons per day. "Flow, design" means the estimated volume of wastewater per unit of time for which a component or system is designed. Design flow may be given in the estimated volume per unit such as person per unit time that shall be multiplied by the maximum number of units that a facility can accommodate over that time. "Flow equalization" means a system configuration that includes sufficient effluent storage capacity to allow for regulated flow on a daily or multi-day basis to a subsequent component despite variable flow from the source. "Flow equalizer" means an adjustment device to evenly distribute flow between outlets in a distribution box or other device that may be out of level. "Grease interceptor tank" means a watertight device located outside a facility designed to intercept, congeal, and retain or remove fats, oils, and grease from sources such as commercial food-service that will generate high levels of fats, oils and greases. "Ground water" means that part of the subsurface water that is at or below the saturated zone. "Ground water surface" means the uppermost limit of an unconfined aquifer at atmospheric pressure. "Guidelines" means State Board of Health Guidelines on Individual Sewage Disposal Systems, 5 CCR 1003-6, which are the predecessor of Regulation 43, On-site Wastewater Treatment System Regulations, 5 CCR 1002-43. "Gulch, dry" means a deep, narrow ravine marking the course of an intermittent or ephemeral stream. "Health officer" means the Director of the Weld County Department of Public Health and Environment, or other representative as designated by the Board of County Commissioners of Weld County. "Higher level treatment" means designated treatment levels other than treatment level 1. "Individual Sewage Disposal System" means a term used for On-site Wastewater Treatment System in Colorado Regulations from 1973 until 2013. "Infiltrative surface" means designated interface where effluent moves from distribution media or a distribution device into soil. "Inspection port" means an access point in a system component that enables inspection, operation and/or maintenance. "Invert" means elevation of the bottom of the inside pipe wall or fitting. "Lateral" means pipe, tubing or other conveyance used to carry and distribute effluent. "Leach field" See Soil treatment area. "Lift Station" means a device used for the vertical lifting of sewage or effluent to the required horizontal level of either the septic tank or soil treatment area. "Limiting condition" means a layer with low permeability, ground water surface or other condition that restricts the treatment capability of the soil. "Liner" means an impermeable synthetic or natural material used to prevent or restrict infiltration and/or exfiltration. "Long-Term Acceptance Rate" (LTAR) means a design parameter expressing the rate that effluent enters the infiltrative surface of the soil treatment area at equilibrium, measured in volume per area per time, e.g. gallons per square foot per day (g/ft2/day). "Malfunction" means the condition in which a component is not performing as designed or installed. "Manufactured media" See Media, manufactured. "Media" means solid material that can be described by shape, dimensions, surface area, void space, and application. "Media, manufactured" means a synthetic media for distribution such as polystyrene blocks or beads or plastic grids. "Media, treatment" means non-or slowly-degradable media used for physical, chemical, and/or biological treatment in an On-site Wastewater Treatment System component. "Mound" means an above-grade soil treatment area designed and installed with at least 12 inches of clean sand between the bottom of the infiltrative surface and the original ground elevation; that utilizes pressure distribution and includes a final cover of suitable soil to stabilize the surface and support vegetative growth. "Nitrogen reduction" means a minimum 50 percent reduction of influent nitrogen strength which is the minimum objective of NSF/ANSI Standard 245 - Wastewater Treatment Systems - Nitrogen Reduction. "On-Site Wastewater Treatment System" or "OWTS" and, where the context so indicates, the term "system" means an absorption system of any size or flow or a system or facility for treating, neutralizing, stabilizing, or dispersing sewage generated in the vicinity, which system is not a part of or connected to a sewage treatment works. "Owner" means the person who is owner of record of the land on which an on-site wastewater treatment system is to be designed, constructed, installed, altered, or used. "OWTS Act" means the On-site Wastewater Treatment System Act, 25-10-101, et seq. C.R.S. "Percolation test" means a subsurface soil test at the depth of a proposed absorption system or similar component of an OWTS to determine the water absorption capability of the soil, the results of which are normally expressed as the rate at which one inch of water is absorbed. The rate is expressed in minutes per inch. "Performance standard" means minimum performance criteria for water quality and operation and maintenance established by the regulatory authority to ensure compliance with the public health and environmental goals of the state or the Division. "Permeability" means the property of a material which permits movement of water through the material. "Permit" means a permit, issued by the Division, authorizing the construction or alteration, installation, and use or for the repair of an On-site Wastewater Treatment System. "Person" means an individual, partnership, firm, corporation, association, or other legal entity and also the state, any political subdivision thereof, or other governmental entity. "Pressure distribution" means application of effluent over an infiltrative surface via pressurized orifices and associated devices and parts (including pump, filters, controls, and piping). "Privy" means an above grade structure allowing for the disposal of excreta not transported by a sewer and which provides privacy and shelter and prevents access to the excreta by flies, rodents, or other vectors. 1. Pit privy— privy over an unlined excavation. 2. Vault privy— privy over a vault. "Professional engineer" means an engineer licensed in accordance with section 12-25-1, C.R.S. "Professional geologist" means a person who is a graduate of an institution of higher education which is accredited by a regional or national accrediting agency, with a minimum of thirty semester (forty-five quarter) hours of undergraduate or graduate work in a field of geology and whose post-baccalaureate training has been in the field of geology with a specific record of an additional five years of geological experience to include no more than two years of graduate work. 23-41-208, C.R.S. and 34-1-201, C.R.S. "Proprietary product" means a manufactured component or other product that is produced by a private person. It may be protected by patent, trademark or copyright. "Public domain technology" means a system that is assembled on location from readily available components and is based on well-established design criteria and is not protected by patent, trademark or copyright. "Redoximorphic" means a soil property that results from the reduction and oxidation of iron and manganese compounds in the soil after saturation with water and subsequent desaturation. "Remediation system" means a treatment system, chemical/biological additive or physical process that is proposed to restore the soil treatment area of an OWTS to good performance. "Restrictive layer" means a horizon or condition in the soil profile or underlying strata that restricts movement of fluids. A restrictive layer may constitute a limiting soil/site condition. "Riser" means a watertight vertical cylinder and lid allowing access to an OWTS component for inspection, cleaning, maintenance, or sampling. "Rock-plant filter" means a designed system which utilizes treatment media and various wetland plants to provide treatment of wastewater through biological, physical, and chemical processes. Also called a constructed wetland. "Sand filter" means a system that utilizes a layer of specified sand as filter and treatment media and pressure distribution. "Sand filter, lined" means a sand filter designed for higher level treatment that has an impervious liner and under-drain below the sand layer. Lined sand filters may be intermittent / single pass where the effluent is distributed over the sand bed a single time before distribution to a soil treatment area, or recirculating where part of the effluent is returned to an earlier component for additional treatment before distribution to a soil treatment area. "Sand filter, unlined" means a layer of sand used as a sand filter without a liner between the sand and the existing soil on which it is placed. "Seepage pit" means an excavation deeper than it is wide that receives septic tank effluent and from which the effluent seeps from a structural internal void into the surrounding soil through the bottom and openings in the side of the pit. "Septage" means a liquid or semisolid that includes normal household wastes, human excreta, and animal or vegetable matter in suspension or solution generated from a residential septic tank system. Septage may include such material issued from a commercial establishment if the commercial establishment can demonstrate to the Division that the material meets the definition of septage set forth in the preceeding sentence. "Septic tank" means a watertight, accessible, covered receptacle designed and constructed to receive sewage from a building sewer, settle solids from the liquid, digest organic matter, store digested solids through a period of retention, and allow the clarified liquids to discharge to other treatment units for final disposal. "Sequential distribution" means a distribution method in which effluent is loaded into one trench and fills it to a predetermined level before passing through a relief line or device to the succeeding trench. The effluent does not pass through the distribution media before it enters succeeding trenches. "Serial distribution" means a distribution method in which effluent is loaded into one trench and fills it to a predetermined level before passing through a relief line or device to the succeeding trench. The effluent passes through the distribution media before entering succeeding trenches which may be connected to provide a single uninterrupted flow path. "Sewage" means a combination of liquid wastes that may include chemicals, house wastes, human excreta, animal or vegetable matter in suspension or solution, and other solids in suspension or solution, and that is discharged from a dwelling, building, or other establishment. See also Wastewater. "Sewage treatment works" has the same meaning as "domestic wastewater treatment works" under section 25-8-103, C.R.S. "Site evaluation" means a comprehensive analysis of soil and site conditions for an OWTS. "Site evaluator" means a practitioner who conducts preconstruction site evaluations, including visiting a site and performing soil analysis, a site survey, or other activities necessary to determine the suitability of a site for an OWTS. "Slit trench latrine" means a temporary shallow trench for use as disposal of non-water- carried human waste. "Soil" means 1. unconsolidated mineral and/or organic material on the immediate surface of the earth that serves as a medium for the growth of plants and can potentially treat wastewater effluent; 2. unconsolidated mineral or organic matter on the surface of the earth that has been subjected to and shows effects of: a) pedogenic and environmental factors of climate (including water and temperature effects) and b) macro and microorganisms, conditioned by relief, acting on parent material over a period of time. "Soil evaluation" means a percolation test, soil profile, or other subsurface soil analysis at the depth of a proposed soil treatment area or similar component or system to determine the water absorption capability of the soil, the results of which are normally expressed as the rate at which one inch of water is absorbed or as an application rate of gallons per square foot per day. "Soil horizon" means layers in the soil column differentiated by changes in texture, color, redoximorphic features, bedrock, structure, consistence, and any other characteristic that affects water movement or treatment of effluent. "Soil morphology" means 1) physical constitution of a soil profile as exhibited by the kinds, thickness, and arrangement of the horizons in the profile; and by the texture, structure, consistence, and porosity of each horizon; and 2) visible characteristics of the soil or any of its parts. "Soil profile hole" means a hole dug or drilled near a proposed soil treatment area to locate bedrock or ground water, if present. Observations of soil cuttings may be made. "Soil profile test pit excavation" means a trench or other excavation used for access to evaluate the soil horizons for properties influencing effluent movement, bedrock, evidence of seasonal high ground water, and other information to be used in locating and designing an On- site Wastewater Treatment System. "Soil structure" means the naturally occurring combination or arrangement of primary soil particles into secondary units or peds; secondary units are characterized on the basis of shape, size class, and grade (degree of distinctness). "Soil texture" means proportion by weight of sand, silt, and clay in a soil. "Soil treatment area" means the physical location where final treatment and dispersal of effluent occurs. Soil treatment area includes drainfields and drip fields. "Soil treatment area, alternating" means final treatment and distribution component that is composed of two soil treatment areas that are independently dosed. "Soil treatment area, sequencing" means a soil treatment area having more than two sections that are dosed on a frequent rotating basis. "State Waters" means any and all surface and subsurface waters which are contained in or flow in or through this state, but does not include waters in sewage systems waters in treatment works of disposal systems, waters in potable water distribution systems, and all water withdrawn for use until use and treatment have been completed. (Sec. 25-8-103 (19) C.R.S.) "Strength, wastewater" means the concentration of earth such as joints in bedrock, gravels, or very coarse soils and which meets percolation constituents of wastewater or effluent; usually expressed in mg/L. "Suitable soil" means a soil which will effectively treat and filter effluent by removal of organisms and suspended solids before the effluent reaches any highly permeable test or soil test pit excavation requirements for determining long-term acceptance rate and has a vertical thickness of at least four feet below the bottom of the soil treatment area unless the treatment goal is met by other performance criteria. "Systems cleaner" means a person engaged in and who holds himself or herself out as a specialist in the cleaning and pumping of On-site Wastewater Treatment Systems and removal of the residues deposited in the operation thereof. "Systems contractor" means a person engaged in and who holds himself or herself out as a specialist in the installation, renovation, and repair of On-site Wastewater Treatment Systems. "Total suspended solids" means measure of all suspended solids in a liquid; typically expressed in mg/L. "Transfer of Title" means change of ownership of a property. "Treatment media" See Media, treatment. "Treatment level" means defined concentrations of pollutants to be achieved by a component or series of components of an DINTS. "Treatment unit" means a component or series of components where solids or pollutants are removed from wastewater or effluent from a preceding component. "Trench" means 1) below-grade soil treatment area consisting of a shallow excavation with a width of 3 feet or less containing distribution media and one lateral; and 2) excavation for placement of piping or installation of electrical wire or conduit. "Uniformity coefficient" means a value which is the ratio of D60 to D10 where D60 is the soil diameter of which 60 percent of the soil weight is finer and O10 is the corresponding value at 10 percent finer. (A soil having a uniformity coefficient smaller than 4 would be considered "uniform"for purposes of this Regulation.) "Vault" means a watertight, covered receptacle, which is designed to receive and store excreta or wastes either from a building sewer or from a privy and is accessible for the periodic removal of its contents. If the vault is intended to serve a structure or structures that are projected to generate a domestic wastewater flow of two thousand gallons per day or more at full occupancy, the vault is a domestic wastewater treatment works. Vaults are On-site Wastewater Treatment Systems. "Visual and tactile evaluation of soil" means determining the properties of soil by standardized tests of appearance and manipulation in the hand. "Volume, effective" means the amount of effluent contained in a tank under normal operating conditions; for a septic tank, effective volume is determined relative to the invert of the outlet; for a dosing tank, effective volume under normal conditions is determined relative to the invert of the inlet and the control off level. "Wastewater, domestic" means combination of liquid wastes (sewage) which may include chemicals, household wastes, human excreta, animal or vegetable matter in suspension or solution, or other solids in suspension or solution which are discharged from a dwelling, building or other structure. "Wastewater, high strength" means 1. influent having BOD5 greater than 300 mg/L; and/or TSS greater than 200 mg/L; and/or fats, oils, and grease greater than 50 mg/L entering a pretreatment component (as defined by NSF/ANSI Standard 40 testing protocol); 2. effluent from a septic tank or other pretreatment component that has BOD5 greater than 170 mg/L; and/or TSS greater than 60 mg/L; and/or fats, oils, and grease greater than 25 mg/L and is applied to an infiltrative surface. "Wastewater pond" means a designed pond which receives exclusively domestic wastewater from a septic tank and which provides an additional degree of treatment. "Water Quality Control Commission" See Commission. "Water Quality Control Division" means the division of administration of the Colorado Department of Public Health and Environment. "Wetland, constructed" See Rock-plant filter."Wetlands" means those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs and similar areas. Table 30-3-1 Abbreviations and Acronyms AASHTO American Association of State Highway and Transportation Officials ANSI American National Standards Institute ASTM American Society for Testing and Materials BOD Biochemical Oxygen Demand C.R.S. Colorado Revised Statutes CBOD Carbonaceous Biochemical Oxygen Demand CSA Canadian Standards Association gpd gallons per day IAPMO International Association of Plumbing and Mechanical Officials ISDS Individual Sewage Disposal System LTAR Long-term Acceptance Rate mg/L milligrams per Liter MPI Minutes Per Inch NAWT National Association of Wastewater Technicians NPCA National Precast Concrete Association NSF National Sanitation Foundation OWTS On-site Wastewater Treatment System(s) STA Soil Treatment Area TL Treatment Level TN Total Nitrogen TSS Total Suspended Solids UL Underwriters' Laboratories ARTICLE IV ADMINISTRATION AND ENFORCEMENT Sec. 30-4-10. General Sanitation Requirements A. The owner of any structure where people live, work, or congregate shall ensure that the structure contains an adequate, convenient, sanitary toilet and sewage system in good working order. Under no condition shall sewage or effluent be permitted to be discharged upon the surface of the ground, or into Waters of the State, unless the sewage or effluent meets the minimum requirements of these Regulations or the water quality standards of the Colorado Water Quality Control Commission, whichever are applicable. Any person who is aware of a malfunctioning on-site wastewater treatment system is encouraged to report the location of the system to the Division. Sec. 30-4-20. Existing OWTS Review. A. In the case of an existing OWTS, which was installed and exists without a permit, certain circumstances, including but not limited to, a referral from the Department of Planning Services, may require evaluation to assure compliance with these Regulations. The owner of the property shall certify in written form the size of the tank in gallons and the absorption field in square feet, and provide a drawing showing the location and dimensions of the existing OWTS, as it exists at the time of review. B. The owner shall provide a pumping receipt from a Weld County licensed cleaner, and tank inspection report for evaluation of existing systems for loan approval inspections and/or other inspections deemed necessary by the Division. The tank must be inspected and pumped within the last two (2) years of the existing system evaluation request. Sec. 30-4-30. Permit Application Requirements and Procedures A. Prior to installing, altering, or repairing a system, the applicant must obtain a permit from the Weld County Department of Public Health and Environment, Division of Environmental Health Services. B. An applicant must submit a complete application that is consistent with section 30-4- 40.C. to the Weld County Department of Public Health and Environment, Division of Environmental Health Services prior to installing, altering or repairing a system. C. Minimum Permit Application Requirements: 1. Owner name and contact information; 2. Applicant's name and contact information; 3. Property address; 4. Parcel Identification Number; 5. Property legal description; 6. Type of permit; 7. Lot size, in acres; 8. Type of building use; 9. Type of water supply; 10. The owner's signature or agent with written permission to sign for the owner; 11. Directions to the property; 12. Report from Site and Soil Evaluation (see ARTICLE V); 13. System design with a legible, accurate siteplan which showspertinent physical Y 9 9 PY features on subject property, and on adjacent properties, as noted in Table 30-7-1; and 14. Other information, data, plans, specifications and tests as required by the Division: a. Additional Evaluation: When the Division Representative has determined that the Division does not have sufficient information for evaluation of an application or a system, the Division Representative may require additional tests or documentation. b. Additional Hydrological, Geological or Engineering: When specific evidence suggests undesirable soil conditions exist, additional hydrological, geological, engineering or other information provided by a professional engineer or geologist may be required to be submitted by the applicant. This requirement shall not prejudice the right of the Division to develop its own information from its own source(s). c. Any expenses associated with additional information, data, plans, specifications and tests shall be the responsibility of the party obtaining the permit. D. After receiving an application for an on-site wastewater treatment system permit, the application shall be reviewed by the Division and an inspection shall be made by the Environmental Health Specialist consisting of: 1. Inspection of the premises, unless previously inspected; 2. An assessment of the general topographical conditions; 3. A preliminary assessment as to the suitability of the site and of the proposed system design based upon verification of the groundwater table, suitable soil, depth to bedrock, ground slope and pertinent physical features such as the location of the OWTS with reference to wells, streams, lakes, ditches, structures, and other geographical features; E. Permit Fees 1. A permit fee, as set by the Board of Weld County Commissioners, shall be required of applicants for the installation, alteration or repair of an on-site wastewater treatment system, payable at the time the application is received. Permit fees are non-refundable except as specifically provided in E.3. of this Section. Permit applications are non-transferable. The issuance of a permit does not denote approval of any zoning subdivision or building code requirements. 2. The Weld County Board of Public Health and/or the Weld County Department of Public Health and Environment, Division of Environmental Health Services, may make provision for the waiver of any permit fee normally required for an on-site wastewater treatment system. 3. Fee Refunds: a. The Division may authorize the refunding of any fee paid which was erroneously paid or collected. b. The Division shall not authorize the refunding of any fee paid except upon written request filed by the original permittee. F. Other Fees 1. Re-Inspection Fee - The Division may assess a re-inspection fee as established by the Board of County Commissioners for each inspection or re-inspection when such portion of work for which inspection is called is not complete or when corrections called for are not ready. 2. Surcharge - The Division must collect a fee of twenty-three dollars for each permit issued for a new, repaired, or upgraded OWTS. Of that fee, the Division shall retain three dollars to cover the Division's administrative costs and twenty dollars shall be transmitted to the state treasurer, who shall deposit that sum in the water quality control fund created in section 25-8-502(1)(c), C.R.S G. Permit Term 1. If both a building permit and an on-site wastewater treatment system permit are issued for the same property, and construction is not commenced prior to the expiration date of the building permit, the on-site wastewater system permit shall expire at the same time as the building permit. If an on-site wastewater treatment system permit is issued for property on which no building permit is required, the on- site wastewater treatment system permit shall expire one year after the permit's issuance, if construction is not commenced. 2. Any change in plans or specifications after the permit has been issued invalidates the permit unless written approval is secured from the Division Representative for such changes. Expired permits can only be renewed by payment of the permit fee and only if: a. There has been no change in the plans and specifications of the proposed system as set out in the original application; or such change is reviewed and approved by a Division Representative. H. Repair Permit 1. The Weld County Division of Environmental Health Services may issue a repair permit and an emergency use permit to the owner or occupant of property on which a system is not functioning properly. Application for a repair permit shall be made by such owner or occupant to the Division within two business days after receiving notice that the system is not functioning in compliance with the OWTS Act, or applicable sections of these Regulations'adopted thereunder or otherwise constitutes a nuisance or a hazard to public health. 2. The permit shall provide for a reasonable period of time within which repairs shall be made. At the end of that period the system shall be inspected by this Division to ensure it is functioning properly. Concurrently with the issuance of a repair permit, the Division may issue an emergency use permit authorizing continued use of a malfunctioning system on an emergency basis for a period not to exceed the period stated in the repair permit. Such an emergency use permit may be extended, for good cause shown, in the event repairs may not be completed in the period stated in the repair permit through no fault of the owner or occupant and only if the owner or occupant will continue to make repairs to the system. I. A permit shall be required for the expanded use of an OWTS. The OWTS must be replaced or modified to handle the increased design flow unless it is determined that the existing system is adequately designed and constructed for the higher design flow rate. J. The issuance of a permit and specifications of terms and conditions therein shall not constitute assumption of liability, nor create a presumption that Weld County or its officers, employees or agents may be liable for the failure or malfunctioning of any system. Permit issuance shall not constitute a certification that the system, the equipment used in the system, or any component used for system operation will ensure continuous compliance with the provision of the OWTS Act, applicable sections of these Regulations adopted thereunder, or any terms and conditions of a permit. K. No OWTS permit shall be issued to any person when the subject property is located within a municipality or special district that provides public sewer service, except where such sewer service to the property is not feasible in the determination of the municipality or special district, or the permit is otherwise authorized by the municipality or special district. Sec. 30-4-40. Determination of Compliance of Permit Submission A. A determination shall be made by an Environmental Health Specialist after review of the application, site and soils evaluations, assumptions and calculations, design of the proposed OWTS test results, and other required information, whether the proposed system is in compliance with the requirements of the OWTS Act, and applicable rules and regulations adopted under said section. A permit may be issued by the Division Representative if the proposed system is determined to be in compliance with the requirements of the OWTS Act, and the rules and regulations adopted pursuant thereto. B. After reviewing all required information, the Division may give conditional approval for a permit for the proposed OWTS, or it may recommend disapproval of the application and denial of the permit if the proposed system cannot be made to comply with these Regulations. Written notice of the denial of a permit or disapproval of plans shall be served upon the applicant as provided by the Colorado Rules of Civil Procedure or by certified mail, return receipt requested. Service by mail shall be complete upon receipt by the Division of the return receipt. Any applicant whose permit application has been denied may request review of the application by the Board of Public Health as provided in Section 30-4-120.B. The conditional approval shall set forth conditions precedent to the issuance of a permit including effluent testing, cleaning or maintenance schedules, or other special conditions. No permit shall be issued to the applicant or to a subsequent owner until the conditions have been met. C. No permits shall be issued for the following systems unless they are designed by a Professional Engineer, and until they have been reviewed and approved by the Board of Public Health: 1. Experimental systems; 2. Treatment systems other than those discharging through a soil treatment area or a sand filter system; Sec. 30-4-50. Denial of Permit Application A. Any applicant whose permit application has been denied by the Division may request review of the application by the Board of Public Health. B. A request for review shall be made within sixty (60) days after denial. C. The applicant shall bear the burden of supplying the Board of Public Health with sufficient evidence to document that the denied system will be constructed and used in such a manner as to comply with the declaration and intent of these Regulations and all applicable state and local rules and regulations and required terms and conditions in any permit pursuant thereto. D. Right to Appeal. 1. Should the Board of Public Health deny an appeal under Section 30-4-50 hereof, the applicant shall have the right to appeal such decision to the Weld County Board of County Commissioners pursuant to Section 3-8(4)(n) of the Weld County Home Rule Charter and the procedures promulgated thereunder. Sec. 30-4-60. Access to Site A. For the purpose of inspecting and enforcing applicable regulations and the terms and conditions of any permit issued and investigating and responding to complaints, the Division is authorized to enter upon private property at reasonable times and upon reasonable notice for the purpose of determining whether or not an operating OWTS is functioning in compliance with the OWTS Act and applicable regulations adopted pursuant thereto and the terms and conditions of any permit issued and to inspect and conduct tests in evaluating any permit application. The owner or occupant of every property having an OWTS must permit the access to the property to make inspections, conduct required tests, take samples, and monitor compliance. If access is denied, the Division Representative may apply to the District Court for an order authorizing entry. Sec. 30-4-70. Notification and Inspection Stages. A. When construction of an OWTS has been completed, the System Contractor or owner shall notify the Division, and a representative of the Division shall make a final inspection within seventy-two (72) hours, or at an agreed time, after receipt of notice, Saturdays, Sundays, and holidays excepted. B. If upon final inspection of the system, the Environmental Health Specialist finds the system installed in accordance with these Regulations and the permit, the Environmental Health Specialist shall issue final approval for the completed system. If the system was required to be designed by or constructed under the supervision of a Professional Engineer, the Division shall require the engineer to certify, in writing, to the Division that construction and installation of the system has been completed in accordance with the terms of the permit and these Regulations. If the inspection discloses any significant departure from the description or design of the system as stated in the application and permit, or if any aspect of the system fails to comply with these Regulations, approval shall be withheld. Written notice of deficiencies causing the disapproval shall be given to the System Contractor or owner. A subsequent inspection shall be made upon notification from the System Contractor or owner that the deficiencies have_been corrected and the system has been brought into compliance with these Regulations. Sec. 30-4-80. Final Approval of OWTS Permit A. Final approval of the OWTS permit by the Division must include, but is not limited to: 1. Receipt of letter from the Professional Engineer certifying construction of system as designed, if required to be engineer-designed; 2. Receipt of as-built drawing; 3. Final inspection prior to backfilling system by the Division confirming that the OWTS was installed according to the permit requirements and regulations or variances to the regulations; and 4. Identification of system contractor. Sec. 30-4-90. Systems Employing New Technology A. Systems employing new technology may be considered by the Division provided they have been reviewed and accepted by the Colorado Department of Public Health and Environment, Water Quality Control Division according to Section 43.13 of On-site Wastewater Treatment System Regulation #43, as adopted in 2013. Sec. 30-4-100. Experimental Systems A. Except for designs or types of systems which have been approved by the Colorado Department of Public Health and Environment, Water Quality Control Division pursuant to section 25-10-108 (1), C.R.S., the Board of Public Health may approve an application for a type of system not otherwise provided for in this regulation, only if the system has been designed by a Professional Engineer, and only if the application provides proof of the ability to install a replacement OWTS in compliance with all local requirements in a timely manner in the event of a failure or malfunction of the experimental system. B. The Board of Public Health shall not arbitrarily deny any person the right to consideration of an application for such a system and shall apply reasonable performance standards in determining whether to approve such an application. (Section 25-10-108 (2), C.R.S.) C. Requirements for consideration of an experimental system permit shall include, but not be limited to: 1. The system shall be designed by a professional engineer to include such design specifications, along with any previous laboratory or field testing data. 2. The necessary field tests shall be agreed upon by the manufacturer or professional engineer and the Board of Public Health. The manufacturer or professional engineer shall agree to conduct, at the manufacturer's or professional engineer's expense, such field testing of the proposed system as the Board of Health shall require to ensure that the system functions properly and creates no hazard to the public health. 3. The duration of the testing period shall be determined by the Board of Public Health. 4. The manufacturer or professional engineer shall warrant the design and installation, and shall agree, in writing, to remove any unsatisfactory installation, as determined by the Board of Public Health, within the time limit stipulated by the Board. D. The design shall provide for the installation of a back-up OWTS of a type described in these Regulations or certified by the Colorado Department of Public Health and Environment, pursuant to Section 25-10-108(1), which the applicant shall agree to install in the event that the Health Officer determines that the proposed system, once installed, is not functioning properly or is otherwise creating a hazard to the public health. E. An unsatisfactory installation may be repaired or changed with the consent of and observation by the Division Representative. However, the Board of Public Health may limit the duration of the testing period, and may declare the design and installation to be unsatisfactory. At that time, the Board of Public Health may require the experimental system to be replaced by an acceptable installation or to be removed from the designated lot. Failure to satisfactorily repair or remove an unsatisfactory installation shall be deemed a violation of these Regulations. F. The application for an experimental system shall include provisions for the timely installation of a backup system upon failure of the experimental system. The time allowed for replacement and the design of the replacement system shall be approved by the Division prior to installation of the experimental system. Sec. 30-4-110. Systems Contractor License A. No person, except as in Section 30-4-110.B below, shall install, engage in the installation of, or repair an on-site wastewater treatment system unless he holds a valid Systems Contractor License issued by the Division. Employees of a validly licensed Systems Contractor shall not be required to be licensed. The initial fee for a Systems Contractor License shall be set by separate Chapter of the Board of Weld County Commissioners. A license shall expire on December 31 of each year, and shall be renewed within thirty (30) days prior thereto, and an annual renewal fee, as set by separate Chapter of the Board of Weld County Commissioners, shall be charged. A license which lapses because of failure to renew or is revoked shall be subject to the fee established for a new license upon re-application. B. Any owner of record shall be entitled to install one on-site wastewater treatment system per year for his own private use under the terms and conditions of the permit. A System Contractor license shall not be required for owner-installers who have obtained permits in accordance with these regulations. However, owner-installers shall be responsible for complying with all other applicable requirements of these Regulations, including but not limited to, assuring that all required inspections are scheduled with, and performed by the Division Representative. C. Standard of performance required for holders of System Contractor Licenses. 1. Application for Systems Contractors License or renewals shall be made upon forms supplied by the Division. 2. Prior to the issuance or renewal of a license, the Division Representative may require the applicant to demonstrate adequate knowledge of these Regulations. 3. Installation, renovation or repair of any on-site wastewater treatment system shall be in compliance with these Regulations and with the conditions set out in the installation permit. 4. Notice of a requested inspection shall be given by the license holder not less than twenty-four(24) hours before the inspection is to be made. 5. The license holder shall ensure that a permit has been issued before installation of a system has begun. D. Revocation of License. 1. A license may be revoked for failure to comply with these Regulations or for other good cause shown above. Revocation shall take place only after a hearing before the Board of Public Health. The license holder shall be given not less than ten (10) days notice of the hearing and may be represented at the hearing by counsel. 2. Written notice of revocation explaining the violations shall be served upon the holder of the Systems Contractor License. Service of notice as required in this Section shall be as provided by the Colorado Rules of Civil Procedure, or by registered or certified mail, return receipt requested, deliverable to the addressee only. 3. A person who has previously had a license revoked may be denied issuance of a new license by the Board of Public Health. Sec. 30-4-120. Regulations of Systems Cleaners. A. No person shall engage in the cleaning of sewage treatment works and on-site wastewater treatment systems or the transportation of septage to a disposal site unless such person holds a valid Systems Cleaner License issued by the Division. Employees of a validly Licensed Systems Cleaner shall not be required to be licensed. The initial fee for a Systems Cleaner License shall be as set by separate Chapter by the Board of Weld County Commissioners. Licenses shall expire on December 31 of each year and an annual renewal fee, as set by separate Chapter by the Board of Weld County Commissioners, shall be charged. A license which lapses because of failure to renew or is revoked shall be subject to the fee established for a new license upon re-application. B. Standard of Performance for Systems Cleaners. 1. A license holder, when cleaning a septic tank or aeration plant, shall remove the liquid, solids, and scum, leaving no more than three (3) inches depth of storage in a non-backflowing septic tank or aeration plant. In backflowing types of systems, cleaning shall be effective in reducing solids and scum to the point of a near new system. 2. License holders shall maintain their equipment so as to ensure that no spillage of septage will occur during transportation, and that their employees are not subjected to undue health hazards. 3. A licensed holder shall dispose of the collected septage only by the following methods: a. By disposal in a municipal sewage treatment collection system by agreement and approval of the plant manager or responsible party. b. By disposal at a site permitted and approved by the Weld County Board of Public Health in accordance with Chapter 14 of the Weld County Code pertaining to land application of septage, specifically Chapter 14, Article 6. c. The Licensed Systems Cleaner shall provide the Division a list of the locations and legal descriptions of all disposal sites utilized for each load transported. This shall be provided monthly except for septage that is land applied. Septage which is land applied shall meet the requirements of Chapter 14, Article 6 of the Weld County Code. d. Prior to the issuance of or renewal of a license, the Division Representative may require the applicant to demonstrate adequate knowledge of Sections 30-4-120.A and B. C. Revocation of a Systems Cleaner License: 1. The procedures described in Section 30-4-110.D. shall be followed for the revocation of a license. Sec. 30-4-130. Variance Procedure A. General 1. The Division may set fees for processing an On-site Wastewater Treatment System (OWTS) permit with a variance in accordance with the provisions of Title 25, Article 10, C.R.S. This permit fee may be the standard OWTS permit fee or may be a separate fee based upon the cost of processing a permit with a variance. B. Requirements for Variance Consideration. 1. The Weld County Board of Public Health must hear variance cases and approval of a variance requires a majority vote. 2. Prior to the rendering of a decision on a variance request, a Public Hearing must be held. The hearing shall be the subject of a Public Notice or notice shall be sent via certified mail, with a minimum twenty (20) day reply time from the date of mailing, to all adjacent property owners. The applicant may submit a signed and dated statement of acknowledgment of variance from all adjacent property owners in lieu of posting or mailing. 3. Requests must be accompanied by: a. Site specific request identifying the specific criteria from which a variance is being requested. b. Technical justification by a Professional Engineer or Professional Geologist, which indicates the specific conditions which exist and/or the measures which will be taken to result in no greater risk than that associated with compliance with the requirements of the regulation. Examples of conditions which exist, or measures which might be taken, include but are not limited to the following: evidence of a natural or manmade physical barrier to the movement of effluent to or towards the feature from which the variance is requested; placement of a manmade physical barrier to the movement of effluent to or toward the feature from which the variance is requested; soil amendment or replacement with sand filter media to reduce the infiltration rate of the effluent such that the travel time of the effluent from the absorption field to the physical feature is no less than the travel time through the native soils at the prescribed setback; and treatment equivalent to Treatment Level 2. c. A discussion of alternatives considered in lieu of the requested variance; d. Technical support for selected alternative, which may include a testing program, which confirms that the variance does not increase the risk to public health and to the environment; and e. A statement of the hardship, which creates the necessity for the variance. 4. The applicant has the burden of proof of demonstrating that the variance is justified and will pose no greater risk to public health and the environment than would a system meeting the regulations. 5. The Division has the ability to impose requirements and conditions on any variance granted. C. Variances for Repair of Failing Systems. 1. When a proposed variance for a system repair or upgrade would result in encroachment on minimum distances to physical features on neighboring properties required by the Division, the hearing procedures in Section 30-4-130.B., Requirements for Variance Consideration above must be followed. 2. For the repair of or upgrade to an approved existing system where the existing system does not meet the required separation distances and where the size of the lot precludes adherence to the required distances, a variance to the separation distances may be requested. The repairs or upgrade shall be no closer to features requiring setbacks than the existing facilities. Variances requesting setbacks no closer than existing setbacks do not have to provide technical justification from a professional engineer or professional geologist. D. Prohibitions on the Granting of Variance Requests. 1. No variance will be issued to mitigate an error in construction involving any element of property improvements. 2. No variance will be issued where the property can accommodate a conforming OWTS. 3. No variance will be issued which will result in setbacks to an offsite physical feature which do not conform to the minimum setbacks defined in Table 30-7-1 without written consent of the owner of property containing said feature. Property lines are considered offsite features. 4. No variance will be issued which reduces the separation to groundwater or bedrock based on the level of treatment in Item 4, Table 30-7-2. 5. No variance from the horizontal setback from a well shall be given which does not also meet the variance requirements of the Board of Examiners of Water Well Construction and Pump Installation Contractors. 6. No variance will be allowed solely for economic gain. E. Outcome of the Variance Proceeding. 1. The applicant shall be notified, in writing, of the decision regarding the request for a variance. The notice of a denial of a variance shall include those reasons which form the basis for the denial. The notice of an approval of a variance shall include any conditions of the approval. The variance, and any conditions thereof shall be recorded on the deed to the property, and any expenses associated with that recording shall be the responsibility of the party obtaining the variance. F. Right to Appeal. 1. Should the Board of Public Health deny a variance under Section 30-4-130 hereof, the applicant shall have the right to appeal such decision to the Weld County Board of County Commissioners pursuant to Section 3-8(4)(n) of the Weld County Home Rule Charter and the procedures promulgated thereunder. Sec. 30-4-140. General Prohibitions; Section 25-10-112, C.R.S. A. No city, county, or city and county shall issue to any person: 1. A permit to construct or remodel a building or structure that is not serviced by a sewage treatment works until the Division has issued a permit for an OWTS. 2. An occupancy permit for the use of a building that is not serviced by a sewage treatment works until the Division makes a final inspection of the OWTS, provided for in section 25-10-106 (1) (h), C.R.S. and the Division approves the installation. B. Use, construction or existence of cesspools, pit privies, slit trenches, and seepage pits is prohibited. C. A person must not connect more than one dwelling, commercial, business, institutional or industrial unit to the same OWTS unless such multiple connection was specified in the application submitted and in the permit issued for the system. D. No person shall construct or maintain any dwelling or other occupied structure which is not equipped with adequate facilities for the sanitary disposal of sewage. E. All persons shall dispose of septage removed from systems in the process of maintenance or cleaning at an approved site and in an approved manner. Section 30-4-150. Prohibition of On-Site Wastewater Treatment Systems in Unsuitable Areas. A. The Board of County Commissioners may conduct a public hearing, after written notice to all affected property owners as shown in the records of the County Assessor and publication of notice in a newspaper of general circulation at least ten days prior to the hearing, to consider the prohibition of permits for on-site wastewater treatment systems in defined areas. The Board of County Commissioners may order such prohibition upon a finding that the construction and use of additional on-site wastewater treatment systems in the defined area will constitute a hazard to the public health or the environment. In such a hearing, the Board of County Commissioners may request affected property owners to submit engineering and geological reports concerning the defined area and provide a study of the economic feasibility of constructing a sewage treatment works. (Section 25-10-111, C.R.S.) Sec. 30-4-160. Enforcement A. Notice of Violations. 1. Whenever the Division Representative determines that there has been a violation of any provision of these Regulations, he/she shall give notice of such violation to the responsible person(s). Such notice shall be in writing, shall specify the violation(s), provide a reasonable time for correction, and shall be addressed to the owner of the property. Service of such notice shall be as provided by the Colorado Rules of Civil Procedure or by certified mail, return receipt requested, deliverable to addressee only. Service by certified mail shall be completed upon receipt by the Division of the return receipt, or upon refusal to accept delivery by the addressee. If the property owner cannot be found or served after a reasonable effort to do so by the Division, service may be made by posting a notice in a conspicuous place on or about the property affected by the notice. A statement by the Division Representative as to why the posting was necessary shall be included in the record. B. Cease and Desist Orders 1. The Health Officer or his/her designee may issue an order to cease and desist from the use of any OWTS or sewage treatment works which is found by the Health Officer not to be functioning in compliance with the OWTS Act or with applicable regulations or is found to constitute a hazard to public health, or has not otherwise received timely repairs under the provisions of section 25-10-106 (1) (j), C.R.S. Such an order may be issued only after a hearing which shall be conducted by the Health Officer not less than 48 hours after written notice thereof is given to the owner or occupant of the property on which the system is located. The order shall require that the owner or occupant bring the system into compliance or eliminate the health hazard within a reasonable period of time, or thereafter cease and desist from the use of the system. A cease and desist order issued by the Health Officer shall be reviewable in the district court for Weld County wherein the system is located and upon a petition filed not later than ten days after the order is issued. Sec. 30-4-170. Penalties; Section 25-10-113, C.R.S. A. Any person who commits any of the following acts or violates any of the provisions of this section commits a Class 1 petty offense as defined in section 18-1.3-503, C.R.S.: 1. Constructs, alters, installs, or permits the use of any OWTS without first having applied for and received a permit as provided for in section 25-10-106, C.R.S.; 2. Constructs, alters, or installs an OWTS in a manner which involves a knowing and material variation from the terms or specifications contained in the application, permit or variance; 3. Violates the terms of a cease and desist order that has become final under the terms of section 25-10-106 (1) (k), C.R.S.; 4. Conducts a business as a systems contractor without having obtained the license provided for in section 25-10-109 (1), C.R.S., in areas which the Board of Public Health has adopted licensing regulations pursuant to that section; 5. Conducts a business as a systems cleaner without having obtained the license provided for in section 25-10-109 (2), C.R.S., in areas which the Board of Public Health has adopted licensing regulations pursuant to that section; 6. Falsifies or maintains improper records concerning system cleaning activities not performed or performed improperly; or 7. Willfully fails to submit proof of proper maintenance and cleaning of a system as required by Regulations adopted by the Board of Public Health, pursuant to Section 25-10-106, C.R.S. ARTICLE V SITE AND SOIL EVALUATION Sec. 30-5-10. Site and Soil Evaluation General Requirements A. A site and soil evaluation must be conducted for each property on which an OWTS is proposed, to determine the suitability of a location to support an OWTS, and to provide the designer a sound basis to select the most appropriate OWTS design for the location and application. 1. Each site evaluation shall consist of: a. Preliminary investigation; b. Reconnaissance; c. Detailed soil investigation; and d. Report and site plan. Sec. 30-5-20. Preliminary Investigation A. A preliminary investigation shall review documented information relative to the site and anticipated conditions. Information gathered as part of the preliminary investigation shall include, but is not limited to: 1. Property Information: a. Address; b. Legal description; c. Existing structures; and d. Location of existing or proposed wells on the property. 2. Weld County Department of Public Health and Environment, Division of Environmental Health Services existing OWTS records. 3. Published site information: a. Topography; and b. Soil data. 4. Location of physical features, on and off the property that will require setbacks as identified in Table 30-7-1. 5. Preliminary soil treatment area size estimate based on information on existing or planned facility and local regulations. 6. Other information required by the Division. 7. Additional information that may be useful to the specific evaluation as available: a. Survey; b. Easements; c. Floodplain maps; d. Geology and basin maps and descriptions; e. Aerial photographs; f. Climate information; and g. Delineated wetlands maps. Sec. 30-5-30. Reconnaissance A. A reconnaissance visit to the property shall evaluate the topography and other surface conditions that will impact the selection and location and design of the OWTS, including: 1. Landscape position; 2. Topography; 3. Vegetation; 4. Natural and cultural features; and 5. Current and historic land use. Sec. 30-5-40. Detailed Soil Investigation A. Soil investigations to determine the long-term acceptance rate of a soil treatment area shall be either 1. Visual and tactile evaluation of two or more soil profile test pit excavations; or 2. Percolation tests plus one or more soil profile holes or one or more soil profile test pit excavations. B. If percolation tests are performed, at least one soil profile hole shall be evaluated to determine whether current ground water levels and/or bedrock is encountered within 8 feet of the ground surface. A visual and tactile evaluation of a soil profile test pit excavation as described in section.30-5-40.E may be substituted for a profile hole. Following three years after the effective date of adoption of the Colorado Department of Public Health & Environment, Water Quality Control Commission's Regulation #43, a visual and tactile evaluation of a soil profile test pit excavation shall be used instead of a soil profile hole when percolation tests are performed to determine long-term acceptance rates. (Soil profile borings will not be allowed after 7/1/16) C. If visual and tactile evaluations of soil are performed without percolation tests to determine a long-term acceptance rate: 1. Evaluation of two or more soil profile test pit excavations must be performed to determine soil types and structure, restrictive layers, evidence of seasonal high ground water, and best depth for the infiltrative surface. 2. At least one of the soil profile test pit excavations must be performed in the portion of the soil treatment area anticipated to have the most limiting conditions. 3. The total number of soil profile test pit excavations required is based on the judgment of the competent technician. D. Procedure for performing percolation tests: 1. The percolation testing shall be performed by or under the supervision of a professional engineer, professional geologist, competent technician or other similarly qualified professional as approved by the Division. 2. Location a. Soil percolation tests shall be performed in at least three test holes in the area in which the soil treatment area is to be located, spaced reasonably evenly over the proposed area. There shall be no less than one test hole provided in every 1,200 square foot area of soil treatment area. b. If the likely depth of a proposed infiltrative surface is uncertain, percolation tests shall be performed at more than one depth to determine the depth of the infiltrative surface. 3. Dimensions a. The percolation test hole shall have a diameter of eight to 12 inches and be terminated a minimum of six inches and a maximum of 18 inches below the proposed infiltrative surface. 4. Change in Soil a. If a change of soil type, color or structure is present within those soils comprising the depth of soil below the infiltrative surface as required in Table 30-7-2 for vertical separation, a minimum of two soil percolation holes shall be terminated in the changed soil, and percolation tests shall be conducted in both holes. 5. Percolation Tests a. The percolation tests shall be conducted using the hole preparation, soil saturation and rate measurement procedures described below. b. Preparation of Percolation Test Holes 1) Excavate the hole to the depth and diameter required. 2) Carefully scrape the bottom and sides of the hole with a knife blade or sharp instrument to remove any smeared soil surfaces and provide a natural soil interface into which water may percolate. 3) Remove all loose soil from the hole. 4) Add two inches of very coarse sand or fine gravel to protect the bottom of the hole from scouring and sediment. c. Presoak 1) The hole shall be presoaked adequately to accomplish both saturation, which is filling the void spaces between the soil particles, and swelling, which is the intrusion of water into the individual soil particles. 2) To presoak the hole, carefully fill the hole with clean water to a minimum depth of 12 inches over the gravel placed in the bottom of the hole. In most soils, it is necessary to refill the hole by supplying a surplus reservoir of clean water, possibly by means of an automatic siphon, to maintain water in the hole for at least four hours and preferably over night. Determine the percolation rate 24 hours after water is first added to the hole. This procedure is to ensure that the soil is given ample time to swell and to approach the condition it will be in during the wettest season of the year. In sandy soils containing five percent or less particles passing the #200 sieve, by weight, the swelling procedure is not essential and the test may be conducted after the water from one filling of the hole has completely seeped out of the hole. d. Percolation Rate Measurement 1) With the exception of sandy soils containing five percent or less particles passing the #200 sieve, by weight, percolation rate measurements shall be made on the day following the presoak procedure. 2) If water remains in the percolation test hole after the swelling period, adjust the depth to approximately six inches above the gravel in the bottom of the hole. From a fixed reference point, measure the drop in water level over a series of 30 minute intervals. The drops are used to calculate the percolation rate. 3) If no water remains in the hole after the swelling period, carefully add clean water to bring the depth of water in the hole to approximately six inches above the top of the gravel in the bottom of the hole. From a fixed reference point, measure the drop in water level at 30 minute intervals for four hours, refilling to six inches over the top of the gravel as necessary. The drop in water level that occurs during the final 30-minute period is used to calculate the percolation rate. If the water level drops during prior periods provide sufficient information, the procedure may be modified to suit local circumstances. The requirement to conduct a four hour test under this section is waived if three successive water-level drops do not vary by more than 1/16 inch; however, in no case shall a test under this section be less than two hours in duration. e. Sandy Soils 1) In sandy soils or other soils in which the first six inches of water seeps out of the hole in less than 30 minutes, after the 24 hours swelling period, the time interval between measurements shall be taken as ten minutes and the test conducted for one hour. The drop that occurs during the final ten minutes shall be used to calculate the percolation rate. 2) If the soil is so sandy or coarse-textured that it will not retain any water, then the infiltration rate shall be recorded as less than one minute per inch. f. Percolation Rate Determination and Reporting 1) The field percolation rate shall be the average rate of the percolation rates determined for all percolation test holes observed in the proposed soil treatment area in minutes per inch. The average percolation rate determined by the tests shall be used in determining the long-term acceptance rate for the proposed system from Table 30-10-1. 2) The technician performing the percolation tests shall furnish an accurate scale drawing, showing the location of the soil profile holes or soil profile test pit excavations and percolation holes tied to lot corners or other permanent objects. The drawing shall meet the criteria in section 30-5-60.A.7. All holes shall be clearly labeled to relate to the information provided for the profile test pits and percolation tests. g. Percolation Test Waiver 1) If the applicant demonstrates to the satisfaction of the Division that the system is not dependent upon soil absorption, the requirement of percolation tests may be waived. h. Alternate Percolation Testing 1) Alternate percolation test procedures may be approved, provided the test results of alternate procedures are substantially equivalent to those determined using the test procedures described in this section. 2) Prior approval from the Division of alternate percolation test procedures is required. E. Visual and Tactile Evaluation of Soil Requirements: 1. The visual and tactile evaluation of soil shall be performed by a professional engineer, professional geologist, competent technician or other similarly qualified professional as approved by the Division. 2. Each soil profile test pit excavation observed at the proposed soil treatment area must be evaluated under adequate light conditions with the soil in an unfrozen state. 3. The soil observations must be conducted at or immediately adjacent to the location of the proposed soil treatment area, but if possible, not under the final location of a trench or bed. 4. The soil observation method must allow observation of the different soil horizons that constitute the soil profile. 5. Soil profile test pit observations must be conducted prior to percolation tests to determine whether the soils are suitable to warrant percolation tests and, if suitable, at what depth percolation tests shall be conducted. 6. The minimum depth of the soil profile test pit excavation must be to the periodically saturated layer, to the bedrock, or four feet below the proposed depth of the infiltrative surface, whichever is encountered first. 7. The soil type at the proposed infiltrative surface of the soil treatment area or a more restrictive soil type within the treatment depth shall be used to determine the long- term acceptance rate from Table 30-10-1. The treatment depth is three to four feet depending on the required thickness for the treatment level below the infiltrative surface from Item 4, Table 30-7-2. 8. Soils data, previously collected by others at the site can be used for the purposes of an OWTS design at the discretion of the Division. It is recommended that the data be verified, at a minimum, by performing an evaluation of a soil profile test pit excavation. F. Soil descriptions for determination of a limiting layer shall include: 1. The depth of each soil horizon measured from the ground surface and a description of the soil texture, structure, and consistency of each soil horizon; 2. Depth to the bedrock; 3. Depth to the periodically saturated soil as determined by: a. Redoximorphic features and other indicators of water levels, or b. Depth of standing water in the soil observation excavation, measured from the ground surface, if observed, unless redoximorphic features indicate a higher level; and 4. Any other soil characteristic that needs to be described to design a system, such as layers that will restrict permeability. Sec. 30-5-50. Percolation Holes, Profile Holes, and Profile Test Pits Excavations — Marking A. The percolation holes, profile holes, and profile test pit excavations must be flagged or otherwise marked to allow easy location by others. Percolation holes and profile test pits must remain open until after evaluation by the Division. The profile test pit excavations must be secured to eliminate safety hazards while kept open for evaluation. Sec. 30-5-60. Report and Site Plan A. A written report shall describe the results of the preliminary investigation, reconnaissance, and detailed evaluations. The report may be in text and/or tabular form and shall include a drawing locating features relative to the proposed OWTS location and test locations. The report may be included as part of the OWTS design document. The report must include, but is not limited to: 1. The name, address, telephone number, e-mail address, and credentials and qualifications of the individual conducting the site evaluation; 2. Preliminary and detailed evaluations, providing information from the surface site characteristics assessment and soils investigation; 3. Dates of preliminary and detailed evaluations; 4. A graphic soil log, to scale, indicating depth of drill hole or excavation, soil description and classification, depth to ground water encountered during drilling or excavation, type of equipment used to drill the profile hole or excavate the soil profile test pit, date of soils investigation, name of investigator and company name. 5. Setback distances to features listed in Table 30-7-1; 6. Setback distances to features listed in Table 30-7-2, existing on the site or within applicable setback limits, whichever is greater; 7. A drawing created to a scale that provides the complete property boundary lines. Minimum drawing size shall be 8.5-inches by 11-inches. If the property is too large to adequately indicate and label the profile test pits and percolation test holes, a detail of the portion of the site containing the soil profile test pits and percolation test holes must be submitted. If the property is too large to adequately show site evaluation information, a detail drawing that includes the information required from the site and soil evaluation that will impact the location of the OWTS must be submitted. Drawings shall indicate dimensions, have a north arrow and graphic scale and include: a. Horizontal and vertical reference points of the proposed soil treatment area; soil observations; percolation testing results and pertinent distances from the proposed OWTS to all required setbacks, lot improvements, easements; ordinary high water mark of a pond, creek, stream, lake, wetland or other surface waters, and detention or retention ponds; and property lines; b. Contours or slope direction and percent slope; a The location of any visible or known unsuitable, disturbed or compacted soils; d. The estimated depth of periodically saturated soils and bedrock, or flood elevation, if applicable; and e. The proposed elevation of the infiltrative surface of the soil treatment area, from an established datum (either ground surface or a benchmark); 8. Anticipated construction-related issues; 9. An assessment of how known or reasonably foreseeable land use changes are expected to affect the system performance, including, but not limited to, changes in drainage patterns, increased impervious surfaces and proximity of new water supply wells; and 10. A narrative explaining difficulties encountered during the site evaluation, including but not limited to identifying and interpreting soil and landform features and how the difficulties were resolved. Sec. 30-5-70. Design Document A. The report and site plan may be attached to the design document or the report and site plan may be combined with the design information as a single document. B. The design document shall include a brief description of the facility and its proposed use, basis and calculations of design flow, and influent strength. C. The design document must contain all plan detail necessary for permitting, installation and maintenance, including: 1. Assumptions and calculations for each component; 2. A scale drawing showing location of each OWTS component and distances to water, physical and health impact features requiring setbacks; 3. Layout of soil treatment area, dimensions of trenches or beds, distribution method and equipment, distribution boxes, drop boxes, valves, or other components used; 4. Depth of infiltrative surface of soil treatment area, depth of the septic tank, depth of other components; 5. Specifications of each component. Specifications for septic tanks or other buried components must include loads due to burial depth, additional weight or pressure loads, and highest elevation of ground water. Resistance to local water composition such as high sulfates shall be included in the specification if such conditions exist at the site; 6. References to design manuals or other technical materials used; 7. Installation procedures; 8. Operation and maintenance manuals or instructions; and 9. Other information that may be useful such as photos and cross-section drawings. Sec. 30-5-80. As-Built Drawings A. Scale drawing showing the OWTS as installed, including its location from known and findable points, dimensions, depths, sizes, manufacturers' names and models as available, and other information relative to locating and maintaining the OWTS components. Sec. 30-5-90. Site Protection A. During construction, the proposed soil treatment area and replacement area, if any, must be protected from disturbance, compaction, or other damage by staking, fencing, posting, or other effective method. Sec. 30-5-100. Qualifications for a Competent Technician A. Percolation Tests 1. Competencies needed: a. Set up equipment; b. Perform and run percolation tests according to the procedure in this Regulation; and c. Record results and calculate percolation rates. 2. The Division may approve training for percolation testing. B. Visual and Tactile Evaluation of Soil 1. Competencies needed: a. Identify soil types by hand texturing and observation; b. Identify presence or absence of soil structure; c. Identify grade of soil structure; d. Recognize evidence of highest seasonal water surface; e. Identify layers and interfaces that will interfere with effluent movement; f. Determine the most promising depth for infiltrative surface of OWTS and for percolation tests, if used; and g. Understand basic principles of OWTS siting and design. 2. Possible demonstrations of competence in visual and tactile evaluation of soil: a. Degree in soil science, agronomy, geology, other majors if a course(s) in soil morphology was included; or b. Attendance at training or workshop for soil evaluation for OWTS including both class and field work. 3. The Division shall approve training for visual and tactile evaluation of soil. ARTICLE VI WASTEWATER FLOW AND STRENGTH Sec. 30-6-10. Wastewater Flows A. The Division may require the installation of a meter to measure flow into the facility or the OWTS. B. Single-Family Residential Homes 1. Design flow per person shall be 75 gallons per day (gpd). 2. The minimum design flow for a new home shall be for a two-bedroom house. The minimum design flow for the repair or replacement of an OWTS of an existing one- bedroom home shall be one-bedroom unless bedrooms are added. 3. For homes up to and including three bedrooms, the assumed number of persons per bedroom shall be two for design purposes. 4. For homes with more than three bedrooms, the assumed number of persons shall be six persons (first three bedrooms x two persons per bedroom) plus one additional person for each bedroom more than three bedrooms. 5. Table 30-6-1 summarizes the design flows for single-family residential homes up to six bedrooms. Table 30-6-1 Single-Family Residential Design Flows Occu anc Wastewater Flow # Bedrooms P y Per Person Design Flow (# of Persons) (gallons/day) (gallons/day) 2 4 75 300 3 6 75 450 4 7 75 525 5 8 75 600 6 9 75 675 C. Auxiliary Buildings 1. If a single-family home has an auxiliary building, such as a non-commercial shop with plumbing fixtures, the flow may be conveyed to the OWTS of the home, or to a separate OWTS constructed to handle the flow from the auxiliary facility. 2. If the flow from the auxiliary building is only generated by residents of the home, it shall be assumed that the OWTS for the home will be adequately sized to include the auxiliary building if the flows are combined. 3. If the auxiliary building will have users in addition to residents and the flow from the auxiliary building will flow to the OWTS of the home, the design flow of the home must include the increased use. 4. If the auxiliary building has a separate OWTS, the facility shall be sized on the basis of Table 30-6-2 and a septic tank detention time of 48 hours. D. Multi-Family and Commercial On-site Wastewater Treatment Systems 1. Design flow values and strengths for multi-family and commercial systems shall be determined from: a. Table 30-6-2; or b. An analysis of flows and strengths from at least three comparable facilities or from the facility, if it is an existing facility, must be submitted to the Division for approval. The analysis shall include: 1) Metered water flows for inside use only for at least a year, or if use is seasonal, for a full season. If metered flows are less than full capacity, they shall be paired with actual use in units of persons present or meals served or other units as appropriate so that an actual daily rate per unit can be determined. The daily rate per unit times the number of units at full occupancy shall be the design flow. 2) Total Suspended Solids and BOD5 or CBOD5 tests at times of full use. At least three samples taken at least one week apart are required. 3) Explanation and justification for the comparability of the tested facilities with the proposed facility. E. Flow Equalization 1. Flow equalization may be used if a facility has flows that vary from day to day by more than four times the average flow. 2. The highest peak assumed shall be at least equal to the full capacity of the facility. 3. The stored flow shall be distributed to the soil treatment area before the next greater- than-average peak. 4. Flow equalization may be used only if: a. The facility is non-residential; b. The facility is only used for one purpose; c. Flows will follow a predictable pattern; and d. There is a long-term expectation that size and pattern of the flows will remain the same. 5. Timed pressure distribution shall be used. The soil treatment area reduction for timed pressure distribution shall not be used in addition to the flow equalization reduction. 6. Contingency plans must be made for expanding the capacity of the DINTS in the event of changed use at the facility. TABLE 30-6-2 Estimate of Average Daily Wastewater Flow and BOD5 Load Per Person Unless Otherwise Noted AVERAGE BOD5 IN RESIDENTIAL WASTEWATER GPD POUNDS PER DAY Single-family dwellings 75 .20 OR Single-family dwellings or auxiliary buildings by fixture type Bath/Shower 14.7 .014 Dishwasher 1.8 .002 Kitchen sink with garbage grinder 5.8 .052 Laundry washer 19.5 .037 Lavatory 8.4 .021 Water closet (toilet) 24.8 .029 Total with kitchen sink garbage grinder 75 .20 Hotels and motels per room without private baths 50 .15 Hotels and motels per room with private baths 75 .15 Multiple-family dwellings or apartments 75 .20 Boarding and rooming houses 50 .15 Mobile home 75 .20 Mobile home park per space 300 .80 AVERAGE BOD5 IN COMMERCIAL WASTEWATER GPD POUNDS PER DAY Facilities with short-term or transient visitors 5 02 Examples: Airports or bus stations per passenger; fairgrounds per person attending; ball parks, race tracks, stadiums, theaters or auditoriums per seat Airport per employee 10 .06 Barber and beauty shops per chair 100 .70* Bowling alleys per lane -toilet wastes only 5 .03* Country club per member 30 .02 County club per employee 20 .06 Dentist offices per non-wet chair 50 .14* Doctor offices per doctor 250 .80* Factories and plants exclusive of industrial wastewater per 20 .05 employee per eight-hour shift— no showers Factories and plants exclusive of industrial wastewater per 35 .08 employee per eight-hour shift - showers provided Kennels per dog 30 .20 Laundries, self-service per commercial washer 400 .75 Office buildings per employee per eight-hour shift 15 .06 Service stations per toilet fixture 250 .50* Stores and shopping centers per square foot of retail space .1 .01* Work or construction camps semi-permanent with flush toilets 50 .17 Work or construction camps semi-permanent without flush 35 .02 toilets AVERAGE BODS IN FOOD SERVICE ESTABLISHMENT GPD POUNDS PER DAY Restaurant open 1 or 2 meals per seat 50 .06/meal 24-hour restaurant per seat 75 .07/meal served Restaurant with paper service only per seat 25 .01/meal served Additional for bars and cocktail lounges per seat 30 .02 Drive-in restaurant per car space 50 .02 INSTITUTIONAL WASTEWATER WITHOUT KITCHENS AVERAGE BOD6 IN UNLESS OTHERWISE NOTED GPD POUNDS PER DAY Churches 5 .01 Hospitals per bed space 250 .20 Nursing homes per bed space 100 .17 Schools, Boarding per person 100 .17 Schools, Day without cafeteria, gym or showers 15 .04 Schools, Day with cafeterias, no gym or showers 20 .08 Schools, Day with cafeterias, gym and showers 25 .10 Schools, Day additional for school workers 15 .06 AVERAGE BOD5IN RECREATIONAL AND SEASONAL WASTEWATER USE GPD POUNDS PER DAY Camps, day, no meals served 15 .12 Luxury resort 125 .17 Resort night and day 50 .12 Campground per campsite** 50 .12 Public park flush toilet per fixture per hour when park is open 36 .04 lbs./fixture Public park urinal per fixture per hour when park is open 10 .01 lbs./fixture Public park shower per fixture per hour when park is open 100 .10 lbs./fixture Public park faucet per fixture per hour when park is open 15 .04 lbs./fixture Swimming pools and bathhouses 10 .06 Travel trailer parks with individual water and sewage hookup 50 .12 per unit ** Travel trailer park without individual water and sewage 50 .12 hookup per unit ** *BOD levels need further verification **Laundry facilities are to be calculated on a per commercial washer basis in accordance with other elements of this table Sec. 30-6-20. Wastewater Strength A. Table 30-6-3 includes levels of treatment that can be achieved by various OWTS components, excluding the soil treatment area. Systems qualifying for these treatment levels except TL1 produced by a septic tank alone must be approved by the Colorado Department of Public Health and Environment, Water Quality Control Division under section 43.13. of OWTS Regulation #43. B. CBOD5 strength must be reduced to Treatment Level TL1 or lower before applying to a soil treatment area. Table 30-6-3 Treatment Levels Treatment Level CBOD5* (mg/L) TSS (mg/L) Total Nitrogen (mg/L) TL 1** 145 80 60-80 TL 2 25 30 - 60-80 TL 2N 25 30 >50% reduction*** • TL 3 10 10 40-60 TL 3N 10 10 20 mg/L (Shading indicates higher treatment levels) *If concentrations of organic material are submitted in BOD5 without data in CBOD5, the data in BOD5 shall be multiplied by 0.85 to estimate CBOD5 levels. **Domestic septic tank effluent prior to soil treatment or higher level treatment has a wide range of concentrations. These values are typical, but values used for design must account for site-specific information. """NSF/ANSI Standard 245 — Wastewater Treatment Systems — Nitrogen Reduction requires reduction of 50 percent rather than an absolute value. ARTICLE VII MINIMUM DISTANCES BETWEEN COMPONENTS OF AN ON-SITE WASTER TREATMENT SYSTEM AND PHYSICAL FEATURES Sec. 30-7-10. Minimum Horizontal Distances A. Horizontal distances from the various components of an OWTS to pertinent terrain features, including streams, lakes, water courses, springs, wetlands, wells, subsurface drains, cisterns, water lines, suction lines, dry gulches, cut banks, dwellings, other occupied buildings and property lines, must be in accordance with Table 30-7-1. The setback requirements are applicable for minimum system performance and treatment as provided in Table 30-7-2. All distance setback modifications must be analyzed and approved by the Board of Public Health and be in complete compliance with the variance procedures of this Regulation. Acceptable methods of analyzing horizontal separation distances with higher treatment levels include but are not limited to: 1. Analyzing the intended uses of impacted surface and/or ground waters; 2. Contacting adjacent property owners for potential conflicts with property line encroachments; and 3. Analyzing potential impacts that system locations may have on building foundations and other potentially affected features. Sec. 30-7-20. Dry Gulches, Cut Banks and Fill Areas A. Separation distances to dry gulches, cut banks and fill areas in Table 30-7-1 shall apply unless the designer or design engineer determines by observation of the exposed slope of the dry gulch or cut bank or by profile holes or soil profile test pit excavations that a restrictive layer is present that will direct or allow the effluent from the soil treatment area to move laterally and surface. B. A lesser distance may be used if it can be demonstrated by a professional engineer or professional geologist that the use of a barrier, such as a minimum 30 mil PVC liner placed between the soil treatment area and the slope of the dry gulch, cut bank or fill area will prevent effluent surfacing laterally. C. The separation distance between a component and the crest of a dry gulch or cut bank will be evaluated for potential erosion or slope instability if the component and the slope are too close together. If there is potential for erosion or instability, the separation distance shall be increased until the risk is minimized. Sec. 30-7-30. On-site Wastewater Treatment System Design Consideration and Treatment Requirements—Separation Distances from Soil Treatment Area A. Table 30-7-2 provides the required site evaluation, design, and treatment level considerations necessary to evaluate the site and to design and locate the soil treatment area component of an OWTS. B. Items 1, 2 and 3 in Table 30-7-2 address the allowable horizontal setback distance between the soil treatment area and the following physical features: 1. Setback distance from soil treatment area to on-site well; 2. Setback distance from soil treatment area to water features; and 3. Setback distance from soil treatment area to a dry gulch or cut bank. C. Item 4 in Table 30-7-2 addresses the required vertical separation distance between the infiltrative surface of the soil treatment area and the restrictive layer or the required depth of soil comprising the soil treatment area. �% . I U) in Lc) 2 , , co 1— .E C) CW E 000< 2 f ,- q ,- a a- a- 2 n 0u_ 44. a) aa) kk - E ® 42 � &k §� 2 2 S q q q N ale �R02 � 2� § � - Li- - o�®I2 � ■ 0 t/f- E' ® � e & � a ■ f t 0 n o o c o o g. 2c �7_9 \e / ~ ~ 2 = / .E co 4-. - ■ e c � ■ tw0v0= 9 E c CO O 0 O O O O 15 @2�2 76 o § 0_ Q § — � �7 F 2 K z c f o CO r - 2 $ � Ca 3/C 6 § 2 © Ek 0 , >, n C4 e 2 2 V �4 /o w m m m 1- § § k O) .7) a) as o CO ids ' C/) q4:1) O "- 2 $ C-2 w o O O o ■ 2 2: 2 2 CO CO % U) 0 w o cn--$� o c2 ■ to 2 � § C § t D « \ E a) # �# � RO m - 2 T::.f %-J E Iml ■ $ @ cE o w � � 0 e= C E _ co \a. % E § \% f ® 2 � c kg 0 2� t 132 = 2k2zf /7 � �> k E � II Lw \ kw [ k � > I- o >k L Do -a cm 22= = �a nco E �R - %� § $f fac - § a) b mb @ , V . cac § 8 = o< 5: § < S 2 E2 Rf_ 5a § > CO) & e2 I �$ \ K• 2WE0 ° ccd c z � �0 O.�e tD c f u � �E (op\ mom 2 � © _ z m " c o c I— m / � 33 2 $$ >k < a) ealem $e 0 . k �\ CCD GO o c ® In _ = 4 NOTE: The minimum distances shown above must be maintained between the OWTS components and the features described. Where soil, geological or other conditions warrant, greater distances may be required by the Board of Public Health or by the Water Quality Control Commission pursuant to section 25-8-206, C.R.S. and applicable regulations. For repair or upgrading of existing OWTS where the size of lot precludes adherence to these distances, a repaired OWTS shall not be closer to setback features than the existing OWTS,as reviewed and approved by the Division. Components that are not watertight should not extend into areas of the root system of nearby trees. 1 Includes infiltration galleries permitted as wells by the Division of Water Resources. 2 Crossings or encroachments may be permitted at the points as noted above provided that the water or wastewater conveyance pipe is encased for the minimum setback distance on each side of the crossing. A length of pipe shall be used with a minimum Schedule 40 rating of sufficient diameter to easily slide over and completely encase the conveyance. Rigid end caps of at least Schedule 40 rating must be glued or secured in a watertight fashion to the ends of the encasement pipe. A hole of sufficient size to accommodate the pipe shall be drilled in the lowest section of the rigid cap so that the conveyance pipe rests on the bottom of the encasement pipe. The area in which the pipe passes through the end caps shall be sealed with an approved underground sealant compatible with the piping used. 3 Add eight feet additional distance for each 100 gallons per day of design flows between 1,000 and 2,000 gallons per day, unless it can be demonstrated by a professional engineer or geologist by a hydrologic analysis or the use of a barrier, consisting of a minimum 30 mil PVC liner or equivalent, that contamination will be minimized. Table 30-7-2 On-site Wastewater Treatment System Design Consideration and Treatment Requirements—Separation Distances from Soil Treatment Area ITEM OWTS DESIGN CONSIDERATION All Treatment Levels Horizontal Separation Distances 1 Distance from soil treatment area to Greater than or equal to 100 feet on-site well Distance from soil treatment area to 2 pond, creek, lake, or other surface Greater than or equal to 50 feet water feature 3 Distance from soil treatment area to Greater than or equal to 25 feet dry gulch or cut bank Vertical Separation Distances Depth in feet from soil treatment area 4 infiltrative surface to restrictive layer or 4 feet (3 feet with pressure dosing) ground water NOTE: Treatment levels are defined in Table 30-6-3. ARTICLEVIII DESIGN CRITERIA- GENERAL Sec. 30-8-10. Performance A. OWTS shall be designed and constructed to achieve the treatment level specified by the design. Sec. 30-8-20. Reliability A. OWTS shall be designed and constructed such that each component shall function, when installed and operated, in a manner not adversely affected by normal operating conditions including erosion, corrosion, vibration, shock, climatic conditions, and usual household chemicals. Each component shall be free of non-functional protrusions or sharp edges, or other hazards, which could cause injury to persons, animals, or properties. Design shall be such as to exclude flies and rodents and other vectors and to prevent the creation of nuisances and public health hazards and shall provide for efficient operation and maintenance. Sec. 30-8-30. Accessibility for Inspection, Maintenance, and Servicing A. Septic tanks shall have risers over each access manhole and all risers shall extend to or above final grade. B. Each treatment component of an OWTS other than the septic tank and soil treatment area shall be equipped with access manholes with risers that extend to or above final grade, located to permit periodic physical inspection, collection and testing of samples and maintenance of all components and compartments. C. Riser Lids 1. Each riser lid brought to the surface shall have a secure closing mechanism, such as a lock, special headed bolts or screws, or sufficient weight to prevent unauthorized access. 2. A secondary plug, cap, cover or screen shall be provided below the riser cover to prevent tank entry if the cover is unknowingly damaged or removed. D. Components that require access for maintenance shall include but not be limited to submerged bearings, moving parts, pumps, siphons, valves, tubes, intakes, slots, distribution boxes, drop boxes, cleanouts, effluent screens, filters, inlet and outlet baffles, aerators, treatment equipment and other devices. E. Components shall be designed and constructed so that, when installed, they shall be easily maintained, sampled, and serviced according to the manufacturer's recommendations. Easy physical access to treatment components by maintenance personnel and equipment shall be provided. Sec. 30-8-40. Plumbing Codes A. Plumbing fixtures, building sewers, vents, sewer lines and other appurtenances shall be designed, operated and maintained so as to comply with the minimum requirements of the most recently revised locally enforceable plumbing code. In absence of a local plumbing code, designs shall adhere to the Colorado Plumbing Code (3 CCR 720-1). A local plumbing permit may be required. Sec. 30-8-50. Electrical Equipment, If Used A. All electrical work, equipment, and material shall comply with the requirements of the currently applicable National Electrical Code as designated by the State Electrical Board Rules and Regulations (3 CCR 710-1). A local electrical permit may be required. B. Electrical components shall be protected from moisture and corrosive gases. Sec. 30-8-60. Indicators of Failure or Malfunctioning for Systems Utilizing Mechanical Apparatus A. A signal device shall be installed which will provide a recognizable indication or warning to the user that the system or component is not operating or is operating but malfunctioning. This indication or warning shall be a visual/ audible signal and shall be located in a centralized area within visual and audible range of the system user. A signal or message may also be sent remotely to a maintenance provider. Sec. 30-8-70. Sampling Access A. If sampling for testing or as a requirement for a permit will be required of effluent from a component other than the soil treatment area, an accessible sampling point shall be provided. B. If sampling of the treated wastewater from the soil treatment area will be required for testing or as a requirement for a permit, a monitoring well or wells shall be constructed. Monitoring wells shall be located down gradient from the soil treatment area, accessible, and provided with a properly securable cover at or above the ground surface. Monitoring wells up gradient of the system may also be required. Lysimeters or other collection devices under the soil treatment area may be used instead of a monitoring well. Sec. 30-8-80. Component Operating Instructions A. The manufacturer of proprietary treatment units utilizing mechanical components shall provide clear, concise written instructions covering the components which, when followed, shall assure proper installation and safe and satisfactory operation and maintenance. B. If the OWTS uses public domain technology, the design engineer shall provide clear, concise written instructions covering the components which, when followed, shall assure proper installation and safe and satisfactory operation and maintenance. Sec. 30-8-90. Surface Activity A. Activity or use on the surface of the ground over any part of the OWTS must be restricted to that which shall allow the system to function as designed and which shall not contribute to compaction of the soil or to structural loading detrimental to the structural integrity or capability of the component to function as designed. During construction, equipment shall be kept off of the ground surface above the soil treatment area and out of the excavation to prevent compaction. If compaction occurs, the disturbed or compacted soil shall be re-evaluated and new percolation tests may be performed to the disturbed or compacted soil and the system redesigned if the parameters have changed. Sec. 30-8-100. Floodplains A. New OWTS and replacement OWTS installed in a 100-year floodplain shall meet or exceed the requirements of the Flood Management Ordinance contained in Chapter 23 and the Federal Emergency Management Agency. Repairs of an existing system shall meet the requirements as feasible. The system as approved by the Division shall be designed to minimize or eliminate infiltration of floodwaters into the system and discharge from the system into the floodwaters. The Division has available a floodplain guidance document. B. No new or expanded OWTS shall be installed in a floodway designated in a 100-year floodplain. For any system repair that may affect the floodway delineation, appropriate procedures shall be followed including revision of the floodway designation, if necessary. Sec. 30-8-110. Business Commercial, Industrial, Institutional or Multi-Family Dwelling Wastewater Systems A. An OWTS that will serve a business, commercial, industrial or institutional property, or a multifamily dwelling shall: 1. Be designed by a professional engineer; 2. Receive only such biodegradable wastes for treatment and distribution as are compatible with those biological treatment processes as occur within the septic tank, any additional treatment unit and the soil treatment area; and 3. Receive authorization by rule or a class V underground injection permit from the United States Environmental Protection Agency (EPA) before an application for an OWTS permit is approved if the system may receive non-residential wastewater or is otherwise covered by the EPA underground injection control program. ARTICLE IX DESIGN CRITERIA- COMPONENTS Sec. 30-9-10. Tanks and Vaults A. Watertightness 1. Septic tanks, vaults, pump tanks, other treatment components, risers and lids shall not allow infiltration of ground water or surface water and shall not allow the release of wastewater or liquids through other than designed openings. 2. Acceptable watertightness testing methods performed at a manufacturer's site or in the field include water filling the tank or vacuum testing. B. Tank Anchoring: In locations where ground water or floodwaters may cause instability problems to the septic tank, vault, or other treatment unit in the OWTS due to flotation, the tank, vault or unit shall be anchored in a manner sufficient to provide stability when the tank is empty. Risers shall be included in the buoyancy calculations: 1. If a manufacturer provides recommendations for anchoring designs, they may be used if they meet the conditions present at the site. 2. If a manufacturer does not provide recommendations for provisions to compensate for buoyancy, or if the professional engineer chooses to provide his/her own designs, the anchoring system design shall be prepared by the professional engineer. C. Identification and Data Marking: All tanks and treatment units shall be permanently and legibly marked in a location for the purpose of inspection that is readily visible when inspected before backfilling. The marking inscription shall include the following: 1. Name of manufacturer; 2. Model or serial number, if available; 3. Effective volume and unit of measure; 4. Maximum depth of earth cover and external loads the tanks is designed to resist; and 5. Inlet and outlet identifications, if relevant. Sec. 30-9-20. Septic Tanks A. The manufacturer shall provide sufficient information to demonstrate that the tank will meet the design specification. B. Sizing Requirements: 1. Sizing for residential capacity for new installations shall be based upon the number of bedrooms according to Table 30-9-1: Table 30-9-1 Minimum Septic Tank Size Based on Number of Bedrooms Number of Bedrooms Tank Capacity (gallons) 2 or 3 1,000 4 1,250 Each Additional 250 2. For multi-family and non-residential applications, a septic tank shall be sized to permit detention of incoming wastewater design flows for a minimum of 48 hours. 3. For systems that remove toilet waste for separate treatment, tank capacity may be less than 1,000 gallons, if it provides a minimum of 48 hours detention time. 4. Minimum tank size for new installations other than for a single-family residence is 400 gallons. C. Testing of Septic Tank Watertightness 1. Testing of septic tanks must be performed and evaluated as specified in section 9 of ASTM C1227-12 (Standard Specification for Precast Septic Tanks) for concrete tanks or in Standard IAPMO/ANSI Z1000-2007 (American Standards for Prefabricated Septic Tanks) for other prefabricated septic tanks. 2. Each unit shall be inspected in the field for conditions that may compromise its watertightness. 3. The inspection in the field shall be conducted by the Division and be performed after the tank installation but before backfilling. 4. If the inspection in the field indicates that the tank may be damaged or is not watertight, the Division Representative may require that the tank be tested for watertightness by the tank manufacturer or the system contractor. D. Septic Tank Design and Dimension Criteria 1. A septic tank shall have two or more compartments or more than one tank may be used in series. The first compartment of a two-compartment tank or the first tank in a series shall hold no less than one-half of the required effective volume. 2. Inlet invert shall be at least two inches higher than the outlet invert. 3. Inlet tee or baffle shall extend above the surface of the liquid at least five inches and shall extend a minimum of eight inches below the liquid surface. 4. Outlet tee or baffle shall extend at least 14 inches below the outlet invert and, if needed, be modified to accommodate an effluent screen. The outlet tee or baffle that accommodates an effluent screen must be located so that the effluent screen has sufficient clearance to be removed through the access opening with a riser in place. 5. The distance from the outlet invert to the underside of the tank top shall be at least ten inches. 6. Liquid depth shall be a minimum of 30 inches and the maximum depth shall not exceed the tank length. 7. The transfer of liquid from the first compartment to the second or successive compartment shall be made at a liquid depth of between 35 and 40 percent of the liquid depth measured from the liquid surface. 8. At least one access manhole no less than 20 inches across shall be provided in each compartment of a septic tank. 9. A septic tank shall have a minimum of 25 square feet of liquid surface area and have at least a six-foot separation between inlets and outlets. Septic tanks in series, combined, shall have a minimum of 25 square feet of liquid surface area and the sum of the distances between inlets and outlets of all tanks must be at least six feet. The requirements for liquid surface area and separation between inlet and outlet may be waived for tanks with less than 750 gallon effective volume. E. Concrete Septic Tank Structural Design 1. Concrete septic tanks shall comply with the structural design criteria of ASTM C1227-12 (Standard Specification for Precast Septic Tanks). 2. The design for each tank model and size by each manufacturer must be certified by a professional engineer as complying with these design and structural requirements and the watertightness standard of this Regulation. 3. Certification by a professional engineer must be submitted to the Colorado Department of Public Health and Environment, Water Quality Control Division for acceptance. 4. Tank slab lids or mid-seam tanks shall be sealed to be watertight. 5. Connections between tank and risers shall be sealed to be watertight. F. Fiberglass, Fiberglass-Reinforced Polyester, and Plastic Tanks 1. All fiberglass, fiberglass-reinforced polyester, and plastic tanks shall meet the minimum design and structural criteria of IAPMO/ANSI Z1000-2007 (American Standards for Prefabricated Septic Tanks) and be certified by a professional engineer as meeting these standards. The professional engineer certifying the criteria must be registered or licensed in the United States, but need not be registered in Colorado. 2. All tanks shall be sold and delivered by the manufacturer or manufacturer's designated representative, preferably completely assembled. On-site tank assembly will be allowed on an as-needed basis. 3. Tanks shall be structurally sound and support external forces as specified in the standard referenced above when empty and internal forces when full. Tanks shall not deform or creep resulting in deflection of more than five percent in shape as a result of loads imposed. 4. All tanks shall be constructed of sound, durable materials and not be subject to excessive corrosion, decay, frost damage, or cracking. 5. All seams or connections including to risers shall be sealed to be watertight. G. Metal tanks are prohibited. Sec. 30-9-30. Abandonment of Tank A. The contents of a tank shall be pumped by a Weld County licensed systems cleaner and properly disposed by methods specified in Section 30-4-120.B.3. B. A tank may be completely removed and the parts disposed of safely. C. If the tank will remain in place: (see Sec. 30-9-30.A) 1. The bottom of the tank shall be broken so the tank neither floats nor fills with water; 2. The top must be collapsed and the sides may be broken into the void; 3. The remaining void shall be filled with gravel, sand or compacted soil; and 4. The filled excavation will be graded to surroundings, allowing for settling. D. The Division requires abandonment of a tank that is deemed to be a hazard. Sec. 30-9-40. Pipe Standards and Bedding Requirements A. Pipe Standards 1. All wastewater lines used in an OWTS shall be constructed of compatible pipe, primer, bonding agent, and fittings. 2. Where unperforated plastic pipe and fittings are used for gravity flow, the minimum wall thickness of the pipe shall conform to ASTM Standard D 3034 or equivalent or greater strength. Schedule 40 pipe is preferred. 3. Perforated distribution pipe surrounded by rock within a soil treatment area shall have a minimum wall thickness and perforations conforming to ASTM Standard D 2729 or equivalent or greater strength. Corrugated polyethylene pipe with smooth interior that meets ASTM F405 or AASHTO M252 specifications or equivalent may be used. 4. Schedule 40 or pipe of equivalent or greater strength shall be used for the placement of piping under driveways or roadways and in instances where sewer line setback distances are granted a variance for any reason. 5. Tile pipe, open-joint pipe, and cast iron pipe must not be used in an OWTS. 6. Pressure pipe must be rated for the intended use to accommodate pump discharge pressure. B. Bedding: All system piping, except for distribution laterals within the soil treatment area, shall be bedded with select material before final inspection by the Division. Select bedding material shall consist of loose, granular material, free from stones, clods, frozen soil, or other deleterious material. Select material may consist of on-site job-excavated or imported material. Bedding material must be mechanically compacted to support piping. C. Pipe identification and data marking must be visible for the purpose of inspection before backfilling. Sec. 30-9-50. Distribution Box A. A distribution box, if used, shall be of sufficient size to distribute effluent equally to the lateral lines of a trench or absorption bed system. The box shall be constructed with the inlet invert at least one inch above the level of the outlet inverts. Flow equalizers or similar devices shall be used to adjust the flow between lines. Access to the box shall be provided with a manhole riser with access lid at or above grade if the top of the box does not reach final grade. 1. Each lateral shall be connected separately to the distribution box 2. The distribution box shall be watertight and all pipes shall be grouted or cemented. The box shall be located a minimum of five (5) feet from the septic tank. 3. Outlet lines from the distribution box to the laterals shall be of solid wall pipe for a minimum of five (5) feet. 4. In the event that treatment tank effluent is discharged to the distribution box by a pump, a baffle shall be installed in the distribution box. The baffle shall be secured to the bottom of the box, extending vertically to a point level with the crown of the inlet pipe, and shall be perpendicular to the inlet. In lieu of a baffle, the inlet pipe may have a ninety (90) degree bend which diverts effluent downwards into the distribution box. Sec. 30-9-60. Drop Box A. In sequential or serial distribution, a watertight box may be used to transfer the effluent to the following trench when the effluent in a trench has received the designed level for overflow to the next trench. A drop box shall have a riser at or above final grade, if the top of the drop box does not reach final grade. Outlet lines in sequential distribution shall be designed and installed so that they may be capped off for resting periods. Sec. 30-9-70. Stepdown/Relief Line A. In sequential or serial distribution, an unperforated pipe may be used to transfer the effluent to the following trench when the effluent in a trench has received the designed level for overflow from that trench. Sec. 30-9-80. Wastewater Pumping and Dosing Siphon Systems A. Pumps 1. Non-clog pump opening shall have at least two-inch diameter solids handling capacity where raw wastewater is pumped. A pump opening shall not have more than 3/4-inch diameter solids handling capacity if previously settled effluent is pumped. 2. Pumps must be certified to the applicable UL or CSA electrical safety standard, bear the seal of approval of CSA, UL or an equivalent testing program and be constructed of corrosion resistant materials. 3. Grinder pumps must also be certified to NSF/ANSI Standard 46 and bear the seal of approval of the NSF or equivalent testing and certification program. B. Floats and Switches 1. Automatic liquid level controls must be provided to start and shut off pumps at a frequency or level specified in the design. 2. Floats must be mounted on a stem separate from the pump discharge piping to allow for removal, adjustment, and replacement of the float without removing the pump. 3. Float switches must be certified to the applicable UL or CSA electrical safety standard, bear the seal of approval of CSA, UL or an equivalent certification program and be constructed of corrosion resistant materials. C. Location of Pump or Siphon 1. A pump may be, or a siphon shall be, installed in a separate tank following the septic tank and be of sufficient volume to allow pump or siphon cycling commensurate with the design capacity. The use of a three-compartment septic tank, sized to provide effective volume in the first two compartments with the pump in the third compartment, is acceptable. 2. The second compartment of the septic tank shall not be used as the pump tank unless it can be demonstrated to the satisfaction of the local public health agency that the minimum 48-hour detention time will not be decreased and the pump is screened or provided with an approved filtering device to assure that only liquid effluent will be discharged. D. Pump or Siphon Discharge Piping 1. The discharge line from the pumping or siphon chamber shall be protected from freezing by burying the pipe below frost level or sloping the pipe to allow it to be self- draining. Drainage shall be provided through the bottom of the pump or through a weep hole located in the discharge line prior to exiting the tank. 2. The pump discharge piping shall have a quick disconnect that is accessible within the riser to allow for easy pump access and removal. 3. The pipe shall be sized to maintain a velocity of two or more feet per second. 4. Automatic air/vacuum release valves shall be installed at high points in the pressure line where necessary to prevent air or vacuum locking and allow self draining of the lines. E. Access 1. The pump or dosing system tank, chamber, or compartment shall have a minimum 24-inch diameter access riser, made of corrosion-resistant material, extending to or above ground level. 2. The access riser must have a watertight connection to the pump or dosing chamber/compartment to prevent infiltration or exfiltration. F. Splice Box 1. Splice boxes shall be located outside the pump system access riser and be accessible from the ground surface. 2. No wire splices shall be made inside the tank, dosing chamber or riser. Wire splicing shall be completed with corrosion-resistant, watertight connectors. G. Controls 1. The pump system shall have an audible and visual alarm notification in the event an excessively high water condition occurs. 2. The pump shall be connected to a control breaker separate from the high water alarm breaker and from any other control system circuits. 3. The pump system shall have a switch so the pump can be manually operated. 4. The pump system for pressure dosing and higher level treatment systems shall have a mechanism for tracking either the amount of time the pump runs or the number of cycles the pump operates. 5. Control panels shall be UL listed. Sec. 30-9-90. Effluent Screens A. If a pump or dosing siphon is used to remove septic tank effluent from the final compartment of the septic tank, an effluent screen must be provided prior to the pump or siphon inlet. A pump vault equipped with a filter cartridge may be considered equivalent to an effluent screen preceding the pump. B. The effluent screen, if used, shall be cleaned at manufacturer-recommended intervals, or more often, if use patterns indicate. C. An alarm may be installed on an effluent screen indicating need for maintenance. Sec. 30-9-100. Grease Interceptor Tanks A. All commercial food service facilities and other facilities generating fats, oils and greases in their waste must install a grease interceptor tank. B. Grease interceptor tanks shall treat only those portions of the total wastewater flow in which grease and oils are generated. ARTICLE X DESIGN CRITERIA- SOIL TREATMENT AREA Sec. 30-10-10. Soil Treatment Area General A. The size and design of the soil treatment area shall be based on the results of the site and soil evaluation, design criteria, and construction standards for the proposed site and DINTS selected. B. At proposed soil treatment area locations where any of the following conditions are present, the system shall be designed by a professional engineer and approved by the local public health agency: 1. The soil classifications are Types 0, 3A, 4, 4A, and 5 as specified in Table 30-10-1 of this Regulation; 2. The maximum seasonal level of the ground water surface is less than four feet below the bottom of the proposed absorption system; 3. A restrictive layer exists less than four feet below the bottom of the proposed absorption system; 4. The ground slope is in excess of thirty percent; or 5. Pressure distribution is used. Sec. 30-10-30. Calculation of Infiltrative Surface of Soil Treatment Area A. The infiltrative surface of a trench or bed receiving any treatment level of effluent is only the bottom area. No sidewall credit is allowed except in deep gravel trenches that are permissible in repairs. B. Long-term acceptance rates (LTARs) are shown in Table 30-10-1. C. Factors for adjusting the size of the soil treatment area are in Tables 30-10-2 and 30-10- 3. D. The required area for a soil treatment area is determined by the following formula: Soil Treatment Area in square feet required = Design Flow (in gallons per day) LTAR (in gallons per day per square foot) 1. Adjusted Soil Treatment Area = Required Soil Treatment Area x Size Adjustment Factor(s). 2. Size adjustment factors for methods of application are in Table 30-10-2. 3. Size adjustment factors for types of storage/distribution media are in Table 30-10-3. 4. A required soil treatment area may be multiplied by one size adjustment factor from Table 30-10-2, Table 30-10-3, or both. 5. A soil treatment area receiving TL2, TL2N, TL3, or TL3N effluent must be pressure dosed. > m J 4- C CD Q1 m O X a N a) E U > C (C C L t0) C N a) II- Q) ,. d 'J L QQO +.+ L2 � Q ons E c a — 3 a �o 0 0 O O 01 .. a o o 0) m E C7 uu v • o °� m w d .- F CO U C c Q = o l_ E O c_ ci 00 Q M o a) ` - C O C CL Cr) O 0 ff[) '' O ON + C d N % 1 O O .r a) F o 0 (I)) m - o r a) y :.; .:'- CI .,,... —o Q L cm V co -;-'4 J+ co ..C_. Y. .c Q) Y a) m a) M C a+ aJ C �p } 7 .>,y ,O) M a) , C7 w0) 2 cua5 2 Cl) a) O) '-0') — , !C O c a C C ≥ Q p aE ) co e z CD a (4 Y a) 0 m a) _ mcc CC c ra a) Ce .. n C� O O O O O) a V � � ra 4 C - C - ' C m Y a) <-> s Y Y a, p : -ct O C D 7 {�:_'.:-.�.'. N O m e m . '.m O m m 0 a. 'S = E a L co o �' Cr o• C• •. 0. Cn rL+ �' Fa C.) Q , y .. ... • Q) C.. .'.' } T N Q En 0. LD d . E' E U o U o U) U) C .C 0 > co ns a) V— zt co a7 _U _N N E a) .,. O i p O O > T ,` (6 U >,- o >cu . - C Q p °- N c-` c >. } >, E >' E a o_ v) m C u) F>'� (no � m � CD c c � � � o Q to U) a5 as ca O CZ O U U Z-- .— n a • co O M V) U) - :.U) J Cl) U) N w ca in a) E co al I— @ � abi N _E- N Sec. 30-10-40. Allowable Soil Treatment Area Reductions and Increases A. The soil treatment area size determined by dividing the design flow rate by the long-term acceptance rate may be adjusted by factors for soil treatment area design and type of distribution media. B. For the purpose of the table, a "baseline system," i.e. adjustment factor of 1.00, is considered to be Treatment Level 1 (TL1) applied by gravity to a gravel-filled trench. C. The maximum reduction from all combined reductions shall be no greater than 50 percent of the baseline system required for a soil treatment area. Table 30-10-2 Size Adjustment Factors for Methods of Application in Soil Treatment Areas Method of Effluent Application from Treatment Unit Type of Soil Treatment Preceding Soil Treatment Area Area Gravity Dosed (Siphon or Pump) Pressure Dosed Trench 1.0 0.9 0.8 Bed 1.2 1.1 1.0 Table 30-10-3 Size Adjustment Factors for Types of Distribution Media in Soil Treatment Areas Type of Storage/Distribution Media Used in Soil Treatment Type of Soil Treatment Area Area Rock or Tire Manufactured Chips Media Other Than Chambers Chambers Trench or Bed 1.0 0.9 0.7 Sec. 30-10-50. Design of Distribution Systems A. General 1. The infiltrative surface and distribution lines must be level. 2. The infiltrative surface must be no deeper than four feetunless adequate treatment at a deeper level can be demonstrated and is approved by the Division.The depth will be measured on the downslope side of the trench or bed. 3. Trenches must follow the ground surface contours so variations in infiltrative surface depth are minimized. Beds must be oriented along contours to the degree possible. 4. Pipe for gravity distribution must be no less than three inches in diameter. 5. A final cover of soil suitable for vegetation at least ten inches deep must be placed from the top of the geotextile or similar pervious material in a rock and pipe system, chamber, or manufactured media up to the final surface grade of the soil treatment area. 6. Following construction, the ground surface must be graded to divert stormwater runoff or other outside water from the soil treatment area. The area must be protected against erosion. Subsurface drains upslope of the soil treatment area may be installed to divert subsurface flow around the area. Subsurface drains must meet the minimum horizontal separation distances from components of the OWTS as specified in Table 30-7-1. 7. Backfilling and compaction of soil treatment areas shall be accomplished in a manner that does not impair the intended function and performance of the storage/distribution media and soil and distribution laterals, allows for the establishment of vegetative cover, minimizes settlement and maintains proper drainage. B. Distribution Lines 1. Distribution between lines in a soil treatment area must be as even as possible. Uneven settling of portions of the distribution system following construction must be addressed by provisions in the design to adjust flows between lines. 2. Distribution lines shall be a maximum of 150 feet long. 3. Distribution lines longer than 100 feet shall be pressure dosed or the application of the effluent shall be at the center of the line. 4. The end of a distribution pipe must be capped, unless it is in a bed or trenches in a level soil treatment area, where the ends of the lines may be looped. 5. Inspection Ports a. An inspection port accessible from ground surface must be installed at the terminal end of each line. The bottom of the inspection port tube must extend to the infiltrative surface and not be connected to the end of the distribution pipe. Inspection ports in chambers may be installed according to manufacturer's instructions if the infiltrative surface is visible or can be measured from the inspection port. b. Additional inspection ports connected to distribution pipes may be installed. c. The top of inspection ports may be below the final grade of the surface if each has a cover at the surface such as a valve box for a lawn irrigation system. 6. Trenches a. Trenches must be three feet wide or less. b. The separating distance between trenches must be a minimum of six feet sidewall-to-sidewall. c. Perforated distribution pipe used in a trench must be as close to the center of the trench as possible. d. Perforations must be oriented downward unless pressure distribution is used and provision for pipe drainage is included. 7. Beds a. Maximum width for a bed shall be 12 feet, unless the bed receives effluent meeting Treatment Level 2 quality or better. b. The separation distance between beds must be a minimum of six feet sidewall- to-sidewall. c. The separating distance between parallel distribution lines in an absorption bed must not exceed six feet and a distribution line must be located within three feet of each sidewall and endwall of the absorption bed. 8. Serial and Sequential Distribution: a. A serial or sequential distribution system may be used where the ground slope does not allow for suitable installation of a single level soil treatment area unless a distribution box or dosing chamber is used. b. The horizontal distance from the side of the absorption system to the surface of the ground on a slope must be adequate to prevent lateral flow and surfacing. c. Adjacent trenches or beds must be connected with a stepdown/relief line or a drop box arrangement such that each trench fills with effluent to the top of the gravel or chamber outlet before flowing to succeeding treatment areas. C. Storage/Distribution Media 1. Rock and Pipe a. The pipe must be surrounded by clean, graded gravel, rock, or other material of equal efficiency which may range in size from 1/2 inch to 2 1/2 inches. At least six inches of gravel, rock or other material must be placed below the pipe. The gravel, rock or other material must fill the trench around the pipe and at least two inches above the top of the distribution pipe. b. The top of the placed gravel or such material used must be covered with non- woven permeable geotextile meeting a maximum thickness rating of 2.0 ounces per square yard or equivalent pervious material. An impervious covering must not be used. 2. Tire Chips a. The pipe may be surrounded with clean, uniformly-sized tire chips. b. Tire chips must be nominally two inches in size and may range from 1/2 inch to a maximum of four inches in any one direction. c. Wire strands must not protrude from the tire chips more than 0.75 inches. d. Tire chips must be free from balls of wire and fine particles less than two mm across. e. The top of the tire chips used must be covered with non-woven permeable geotextile meeting a maximum thickness rating of 2.0 ounces per square yard or equivalent pervious material. An impervious covering must not be used. 3. Chambers a. Chambers must be installed with the base on the infiltrative surface. b. Installation must be according to manufacturer's instructions. c. Effluent may be distributed by gravity or pressure dosing. 4. Manufactured Media a. Manufactured media must be installed with the base on the infiltrative surface. b. Installation must be according to manufacturer's instructions. c. Effluent may be applied by pressure distribution only if the manufacturer specifies suitability of the product for that use. 5. Pressure Distribution a. Design of pressure distribution systems must include: 1) Dose size and frequency for flows and soil or media long-term acceptance rate; 2) Pipe diameter and strength requirements; 3) Orifice size and spacing; and 4) Distal pressure head. b. Cleanouts must be installed at the end of each line. 6. Driplines a. The infiltrative surface area must be calculated using the long-term acceptance rate for the site or a more conservative value if recommended by the manufacturer. b. Driplines must be installed on manufacturer's spacing recommendations. c. Drainback must be provided for all drip lines, pipes and pumps. d. Provisions must be made to minimize freezing in the distribution lines, driplines, relief valves, and control systems. e. Provisions must be made for backflushing or other cleaning. Sec. 30-10-60. Alternating and Sequencing Zone Systems A. Alternating Systems 1. An alternating system must have two zones that must be alternated on an annual or more frequent basis. 2. Each section must be a minimum of 50 percent of the total soil treatment area. Size adjustment factors for methods of effluent application or type of distribution media shall not be allowed. 3. A diversion valve or other approved diversion mechanism may be installed on the septic tank effluent line allowing soil treatment area sections to be alternated. 4. The diversion mechanism must be readily accessible from the finished grade. B. Sequencing Zone Systems 1. Sequencing zone systems have more than two soil treatment area sections that are dosed on a frequent rotating basis. 2. Where soil conditions are similar between the sections, each section area shall be the same size. If soil conditions are such that long-term acceptance rates are different, each section may be sized for the same dose, but different long-term acceptance rates. 3. An automatic distribution valve must be used. 4. Dosing of each system must be evaluated by the design engineer based on projected daily flow rates, number of zones, and soil types. Sec. 30-10-70. Dosing A. Dosing may be used for soil treatment area distribution. The dose must be sized to account for the daily flow and the dosing frequency. Dosing systems must be designed by a professional engineer. Sec. 30-10-80. Lift Stations A. Lift stations intended solely for the purpose of delivering sewage to a septic tank or septic tank effluent to a non-engineered soil treatment area that is located such that it is not possible to provide gravity flow from the septic tank to the soil treatment area are not required to be designed by a professional engineer. The systems installer shall submit to the Division a pump information form, provided by the Division, for documentation. Sec. 30-10-90. Soil Replacement A. Soil replacement is permitted to bring the soil within the requirements of suitable soil. Added soil must meet the specifications of sand filter media, as specified in section 30- 11-30.B.1. All added soil must be completely settled prior to installation of components as specified and approved by the design engineer. The loading rate for sand filters must be used. Pressure distribution must be used. Sec. 30-10-100. Repairs A. When space is not available or if there are other site limitations that preclude other soil treatment area options for OWTS repairs, wide beds and deep gravel trenches may be considered for repairs only. Other options are vaults (in accordance with Section 30-12- 40) or higher level treatment systems. B. Wide Beds: For repairs, beds may be wider than 12 feet without being required to receive effluent meeting Treatment Level 2 quality or better. C. Deep Gravel Trenches 1. The length of an absorption trench or bed may be calculated by allowance for the sidewall area of additional depth of gravel in excess of six inches below the bottom of the distribution pipe according to the following formula: Adjusted Length = L x (W+2) (W+1+2D) Where: L = length of trench prior to adjustment for deep gravel W = width of trench or bed in feet D = additional depth in feet of gravel in excess of the minimum required six inches of gravel below the distribution pipe 2. Maximum allowable additional depth is five feet. 3. Percolation tests and soil profile hole or soil profile excavation test pit evaluations must be performed at the proposed infiltrative surface depth. (soil profile borings will not be allowed after July 1, 2016) 4. The reduction in field size area with the use of chambers must not be applied to deep gravel systems. D. Vaults 1. The allowable use of vaults for repairs must meet the criteria specified in section 30- 12-40 of this Regulation. E. Higher Level Treatment Options 1. Design criteria for higher level treatment systems are in Article Xl. ARTICLE Xl DESIGN CRITERIA- HIGH LEVEL TREATMENT SYSTEMS Sec. 30-11-10. General A. Higher level treatment systems must be designed by a professional engineer. B. Higher level treatment systems may be public domain technology systems or proprietary systems. 1. Public domain technology systems must be designed, installed and maintained according to established criteria. When design criteria are not specifically provided in this Regulation, the criteria used in the design must be from a reference commonly used as an industry standard and the criteria must be cited in the design. 2. Proprietary systems must be designed, installed, and maintained according to manufacturer's instructions and must have received review and acceptance by the Water Quality Control Division. C. Soil treatment areas for higher level treatment systems must be pressure dosed. D. Systems must be capable of accommodating all anticipated flows and organic loads. E. Ventilation and air systems: Mechanical components must be installed in a properly vented location and all vents, air intakes, and air hoses must be protected from snow, ice, or water vapor accumulations. F. Covers, barriers, or other protection: All systems must be installed to include protection of openings against entry of insects, rodents, other vectors and unauthorized people. Sec. 30-11-20. Treatment Levels A. The treatment levels identified in Table 30-6-3 are specified in this section for public domain technology, and proprietary treatment systems shall be assigned a treatment level approved by the Water Quality Control Division. Adequate maintenance and operation plan as required by the Water Quality Control Division must be submitted to the Division. Sec. 30-11-30. Sand Filters A. Sand filters, such as a lined intermittent sand filter or recirculating sand filter, may be used as a pre-treatment system where the treated effluent is collected and dispersed to a soil treatment area or where site conditions require importing treatment media, such as an unlined sand filter, a soil replacement system, or a mounded system. B. Intermittent (Single Pass) Sand Filters 1. General a. The filtering material used in a sand filter must be clean, coarse sand, all passing a screen having four meshes to the inch. The sand must have an effective size between 0.25 and 0.60 mm. The uniformity coefficient must be 4.0 or less. Material meeting ASTM 33, for concrete sand, with one percent or less fines passing 200 mesh sieve may be used. b. The sand below the distribution lines must be at least two feet deep. c. Distribution system 1) Dispersal of effluent to the surface of the sand filter must be by a pressurized distribution system for equal distribution. 2) Pipes used to disperse the effluent must be surrounded by washed coarse screened gravel or crushed stone. All of the gravel or stone must pass a 2 1/2-inch screen and must be retained on a 3/4-inch screen. 3) Manufactured media may be used as an alternative to gravel or stone. 4) The separation distance between parallel distribution lines must not exceed six feet, and a distribution line must be located within three feet of each filter sidewall. d. Application Rates 1) A maximum sand filter application rate of 1.0 gpd/ft2 must be used. 2) An intermittent sand filter must not be used to treat wastewater that does not conform to TL1 treatment level or better. 2. Lined Sand Filters a. Lined sand filters must have an impervious liner on the sides and bottom of the filter. The liner must consist of a 30 mil thickness PVC material or equivalent. b. A minimum four-inch diameter under-drain pipe must be used. The under-drain pipe must be surrounded by washed coarse screened gravel or crushed stone. All of the gravel or stone must pass a 2 1/2 inch screen and must be retained on a 3/4-inch screen. Manufactured media may be used as an alternative to gravel or stone. c. Under-drain effluent collected below the sand filter shall be dispersed to a soil treatment area. 3. Unlined (Open Bottom) Sand Filters a. The bottom of the sand filter must be no less than two feet above the high ground water surface or bedrock for installations in which effluent percolates downward through the soil. b. An unlined sand filter is to be sized based on section 30-11-30.B.1.d.(1). 4. Mounded Sand Filters (Mound Systems) a. When the infiltrative surface area of the media receiving wastewater effluent is above the natural ground surface, the system shall be considered a mounded sand filter. b. Mounded sand filters must conform to section 30-11-30.B.3.for unlined (open bottom) sand filters. c. The basal area and linear loading rate must be determined from the loading rate for the soil type under the mound and the slope of the site. d. The final slope of the mound must be no greater than three feet horizontal to one foot vertical. e. The surface of the mounded area must be planted with a suitable vegetative cover. C. Recirculating Sand Filters 1. A recirculating sand filter must have an impervious liner on the sides and bottom of the filter. The liner must consist of a 30 mil thickness PVC material or equivalent. 2. A minimum four-inch diameter under-drain pipe must be used. The under-drain pipe must be surrounded by washed coarse screened gravel or crushed stone. All of the gravel or stone must pass a 2 1/2-inch screen and must be retained on a 3/4-inch screen. Manufactured media may be used as an alternative to gravel or stone. a. Filter media effective size (D10) must range from 1.0 to 1.50 mm and the uniformity coefficient (D60/D10) must be less than 4.0. Fines passing a 200 mesh sieve must be less than one percent. 3. Sand depth must be a minimum of two feet. 4. Typical loading rates are 3.0 to 5.0 gpd/ft2. Rate must not exceed 5.0 gpd/ft2. 5. Design re-circulation ratios may be 3:1 to 5:1. 6. Effluent collected from the sand filter must be discharged to a soil treatment area. Sec. 30-11-40. Rock Plant Filter (Constructed Wetland) Treatment Before a Soil Treatment Area A. A rock plant filter system must be designed by a professional engineer. B. The design must be site specific and include specifications for loading, capacity, dimensions, liner material, filter media, effluent depth and depth control mechanism, density and species of plant material, instructions for maintenance and other pertinent information as requested by the Division. C. The treated effluent from a rock plant filter must be distributed to a soil treatment area. D. Although producing higher level treatment, rock plant filters must not be assigned a treatment level higher than TL1 because of system and seasonal variability. ARTICLE XII DESIGN CRITERIA-OTHER FACILITIES Sec. 30-12-10. Wastewater Remaining After Separation of Toilet Wastes A. An OWTS treating the wastewater remaining after the separation of the toilet wastes must meet all minimum design and construction standards for a TL1 OWTS based on the volume and character of wastes for the fixtures and the number of persons to be served. Sec. 30-12-20. Evapotranspiration and Evapotranspiration/Absorption Systems: A. An evapotranspiration system may be designed to consider evaporation and transpiration only, or in soil types 3A, 4, 4A and 5, absorption may also be considered. 1. An evapotranspiration system or evapotranspiration/absorption system must be designed by a professional engineer. 2. Data to be furnished must include, but shall not be limited to: dimensions; distribution system design; specifications of gravel and wicking sand if used, liner material if used, and bedding; properties of the soil under the evapotranspiration system and provision for vegetation cover. 3. The following formula may be used as a guide for determining the area necessary for total evapotranspiration of septic tank effluent: Area (in square feet) = Design Flow(in gallons per day) x 586 Lake Evaporation Rate at the Site (in inches per year) 4. As an alternative, a system may be designed and sized on the basis of a monthly water balance for the system. Such a design would provide for total storage of average daily flows for all periods in which evapotranspiration is not shown to occur. 5. If the design provides wicks (sand structures which penetrate through the rock media to the bottom of the bed), they must be equal to 10 to 15 percent of the bed surface area. The wicks must be uniformly spaced throughout the bed. 6. Sand utilized in evapotranspiration or evapotranspiration/absorption beds for wicks must meet the gradation requirements in Table 30-12-1 and be approved by the design engineer. Table 30-12-1 Gradation of Wicking Sand for Evapotranspiration Beds Sieve Size Percent Passing 4 100 40 50-70 200 <15 7. Adequate surface area must be provided to evaporate/transpirate total annual average daily flows at a rate equivalent to local net lake evaporation including over the part of the year when the evaporation rate is not measured. 8. If the system is designed as an evapotranspiration/absorption system, the amount of storage and evapotranspiration capacities may be reduced by the volume of effluent absorbed by the soil based on the long-term acceptance rate for that soil type. 9. Except for dwellings, if the system is designed for summer use only, the surface area may be multiplied by 0.6 to obtain the required area. 10. Evapotranspiration beds and evapotranspiration-absorption beds may be wider than 12 feet. Sec. 30-12-30. Wastewater Ponds A. Construction of new wastewater ponds for single-family homes is prohibited. B. A septic tank must precede the wastewater pond. C. The depth of the design volume of the wastewater and must be five feet. P 9 P D. A wastewater pond must have two feet of free board above the design volume of the pond. E. A wastewater pond must be fenced to keep out livestock, pets, vermin, and unauthorized people. F. Wastewater ponds must be designed on the basis of monthly water balance including design flow, precipitation, evaporation, and seepage. G. Wastewater ponds must be constructed so the seepage out of the bottom or sides does not exceed 1/32 of an inch per day. If this limit cannot be achieved using compacted natural soil materials including soil additives, an impermeable synthetic membrane liner must be used. H. Maintenance must include preventing aquatic and wetland plants from growing in or on the edge of the pond, protecting sides from erosion, and mowing grasses on the berm and around the pond. I. Wastewater ponds must be designed by a professional engineer. Sec. 30-12-40. Vaults and Vault Privies A. Vaults for full time use in new construction are prohibited where a property can accommodate an OWTS with a soil treatment area. B. Vaults may be permitted under the following conditions: 1. Where there is limited use occupancy on a property which cannot accommodate an OWTS with soil treatment area. 2. If the facility is on land where the installation of an OWTS with soil treatment area is not permitted. 3. Where there is only a temporary water source available (bottled water, cistern). 4. Temporary use for on-location construction offices (mobile offices) not to exceed 6 months. 5. Low flow commercial uses that are temporary, such as gravel mining operations. 6. Seasonal recreational facilities where use is no more than 6 months per year. 7. A vault system variance approved by the Board of Public Health. 8. Where some of the wastewater flows are separated, such as toilet wastes only, into a vault. The portion not retained in the vault must be treated in an adequately sized OWTS. C. A vault must have a minimum 500 gallon effective volume or be capable of holding a minimum of the two-day design wastewater flow, whichever is larger. D. A visual and audible signal device, indicating filling to a maximum of 75 percent capacity, must be installed to indicate when pumping is necessary. E. Concrete vaults must meet the strength and watertightness requirements for septic tanks. Prefabricated fiberglass, fiberglass-reinforced polyester, and plastic tanks may be used as vaults, if the tank manufacturer provides testing criteria certifying them for this use. F. Contents of the vault must be pumped by a Weld County licensed systems cleaner, and records of maintenance and proper disposal shall be maintained by the owner and available for review by the Division. G. Vault Privy 1. Effective volume of the vault privy must be no less than 400 gallons and it must be constructed of concrete or plastic. The vaults for privies must meet the structural and watertightness standards of vaults. 2. A vault privy must be built to include: fly- and rodent-tight construction, a superstructure affording complete privacy, an earth mound around the top of the vault and below floor level that slopes downward away from the superstructure base, a floor, and a riser of concrete or other impervious material with hinged seats and covers of easily cleanable, impervious material. All venting must be fly-proofed with No. 16 or tighter mesh screening. 3. A signal device is not required for a vault privy. H. A permit fee, as set by the Board of County Commissioners, shall be required of applicants for any system that requires only a vault or holding tank. An application for an OWTS permit must be completed by the owner and a final inspection must be made by the Division with proper notice as specified in Section 30-4-70. Sec. 30-12-50. Incinerating, Composting and Chemical Toilets A. Only incinerating and composting toilets receiving review and acceptance by the Water Quality Control Division may be permitted. Incinerating and composting toilets shall bear the seal of approval of the NSF or an equivalent test and certification program. B. Permitting of an incinerating or composting toilet may also be subject to the jurisdiction of a local agency regulating plumbing or the Colorado Plumbing Board, whichever has jurisdiction over plumbing in the location. C. An incinerating or composting toilet may be used for toilet waste where an OWTS is installed for treating wastewater remaining after removal of toilet waste. Subject to Board of Public Health, or other applicable regulations or codes (e.g., Colorado Plumbing Code if a local code does not exist), the compartment may be located within a dwelling or building provided the unit complies with the applicable requirements of this Regulation, and provided the installation will not result in conditions considered to be a health hazard as determined by the Division. Compartment and appurtenances related to the unit must include fly-tight and vector-proof construction and exterior ventilation. D. Incinerating Toilets: An approved incinerating toilet must be designed and installed in accordance with all applicable federal, state, and local air-pollution requirements and manufacturer's instructions. E. Composting Toilets 1. An approved composting toilet must treat deposits of feces, urine, and readily decomposable household garbage that are not diluted with water or other fluids and are retained in a compartment in which aerobic composting will occur. 2. The effective volume of the receptacle must be sufficient to accommodate the number of persons served in the design of the unit installed. The effective volume of the unit must include sufficient area for the use of composting materials which must not be toxic to the process or hazardous to persons and which must be used in sufficient quantity to assure proper decomposition. 3. Residue from the composting toilet must be removed when it is filled to 75 percent of capacity. Residue from the unit must be properly disposed of by methods recommended by the manufacturer and acceptable to the Division. Disposal methods must prevent contamination of water and not cause a public health nuisance. Disposal using solid waste practices is recommended. 4. If a system will be installed where low temperature may be a factor, design and installation must address the effects of the low temperature. 5. Composting toilets must be operated according to manufacturer's specifications. F. Portable Chemical Toilets 1. A portable chemical toilet may be used by permit from the Division. 2. Use of a portable chemical toilet in permanently occupied buildings is prohibited except during construction or under emergency circumstances as determined by the Division. Proper ventilation of a chemical toilet used inside must be required. Sec. 30-12-60. Treatment Systems Other Than Those Discharging Through a Soil Treatment Area or Sand Filter System A. For systems discharging to State Waters, see section 30-2-30.A. B. Systems that discharge other than through a soil treatment area or a sand filter system must: 1. Be designed by a professional engineer; 2. Be reviewed by the Board of Public Health; and 3. Not pose a potential health hazard or private or public nuisance or undue risk of contamination. C. The Board of Public Health may choose to permit only systems that do not allow drainage of effluent off the property of origin. D. The following minimum performance criteria must be required for all permitted systems pursuant to this section: 1. If effluent discharge is made into areas in which the possibility exists for occasional direct human contact with the effluent discharge, the effluent at the point of discharge must meet the minimum treatment criteria of TL3 effluent and specifically adhere to each of the following standards: a. The geometric mean of the fecal coliform density must not exceed 25 per 100 milliliters when averaged over any five consecutive samples, and no single sample result for fecal coliform can exceed 200 per 100 milliliters. b. The arithmetic mean of the standard five-day carbonaceous biochemical oxygen demand (CBOD5) must not exceed ten milligrams per liter when averaged over any three consecutive samples. c. The arithmetic mean of the total suspended solids must not exceed ten milligrams per liter when averaged over any three consecutive samples. 2. If the effluent discharge is made into an area so restricted as to protect against the likelihood of direct human contact with the discharged effluent, the effluent at the point of discharge must meet the treatment criteria of TL2 effluent and specifically adhere to each of the following standards: a. The geometric mean of the fecal coliform density must not exceed 500 per 100 milliliters when averaged over any five consecutive samples, and no single sample can exceed 5000 fecal coliform per 100 milliliters. b. The arithmetic mean of the standard five-day carbonaceous biochemical oxygen demand (CBOD5) must not exceed 25 milligrams per liter when averaged over any three consecutive samples. c. The arithmetic mean of the total suspended solids must not exceed 30 milligrams per liter when averaged over any three consecutive samples. E. To determine compliance with the standards contained in this section, the required sampling frequency for fecal coliform, CBOD5, and total suspended solid levels must be performed at least once per month when the system is in operation y p and the results submitted to the Division for compliance with the permit requirements. F. Methods of Analysis—Sampling Points: 1. All effluent samples must be analyzed according to the methods prescribed in the American Public Health Association, American Water Works Association, and Water Environment Federation: Standards Methods for the Examination of Water and Wastewater, 21st edition. 2. The sampling point must be a location that is representative of final discharge from the system. ARTICLE XIII Operation and Maintenance Sec. 30-13-10. Responsibility A. The owner must be responsible for maintenance of an OWTS unless the responsibility has been contractually assigned to a tenant or a third party or a public, quasi-public, or political subdivision. Sec. 13-13-20. Service Label A. For higher level treatment systems or other components under a service contract, a clearly visible, permanently attached label or plate giving instructions for obtaining service must be placed at a conspicuous location. Sec. 30-13-30. Monitoring and Sampling A. For an OWTS for which monitoring of effluent is required, a delegated third party must collect and test effluent samples to ensure compliance with the provisions of this Regulation. B. Sampling may be required by the Division in conjunction with an enforcement action. C. Any owner or occupant of property on which an OWTS is located may request the Division to collect and test an effluent sample from the system. The Division may perform such collection and testing services. The owner or occupant must pay for these services. 1. If the Division or a delegated third party collects and tests effluent samples, a fee not to exceed that which is 'allowed by the OWTS Act (Title 25, Article 10) may be charged for each sample collected and tested. Payment of such charge must be stated in the permit as a condition for its continued use. 2. Conditions when the Division can require routine monitoring including, but not limited to: a. Indications of inadequate performance; b. Location in sensitive areas; c. Experimental systems. 3. Sampling and analysis must be performed according to American Public Health Association, American Water Works Association, and Water Environment Federation: Standards Methods for the Examination of Water and Wastewater, 21st edition. BE IT FURTHER ORDAINED by the Board that the Clerk to the Board be, and hereby is, directed to arrange for Colorado Code Publishing to supplement the Weld County Code with the amendments contained herein, to coincide with chapters, articles, divisions, sections, and subsections as they currently exist within said Code; and to resolve any inconsistencies regarding capitalization, grammar, and numbering or placement of chapters, articles, divisions, sections, and subsections in said Code. BE IT FURTHER ORDAINED by the Board if any section, subsection, paragraph, sentence, clause, or phrase of this Ordinance is for any reason held or decided to be unconstitutional, such decision shall not affect the validity of the remaining portions hereof. The Board of County Commissioners hereby declares that it would have enacted this Ordinance in each and every section, subsection, paragraph, sentence, clause, and phrase thereof irrespective of the fact that any one or more sections, subsections, paragraphs, sentences, clauses, or phrases might be declared to be unconstitutional or invalid. NOTICE PURSUANT to the Weld County Home Rule Charter, Ordinance Number 2013-13 published above, was introduced and, on motion duly made and seconded, approved upon first reading on December 9, 2013, 2013. A public hearing and second reading is scheduled to be held in the Chambers of the Board, located within the Weld County Administration Building, 1150 O Street, Greeley, Colorado 80631, on December 30, 2013, 2013. All persons in any manner interested in the reading of said Ordinance are requested to attend and may be heard. Please contact the Clerk to the Board's office at phone (970) 336-7215, Extension 4225, or fax (970) 352-0242, prior to the day of the hearing if, as the result of a disability, you require reasonable accommodations in order to participate in this hearing. Any backup material, exhibits or information previously submitted to the Board of County Commissioners concerning this matter may be examined in the office of the Clerk to the Board of County Commissioners, located within the Weld County Administration Building, 1150 O Street, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru Friday, or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail messages sent to an individual Commissioner may not be included in the case file. To ensure inclusion of your E-Mail correspondence into the case file, please send a copy to egesick@co.weld.co.us. SECOND READING: December 30, 2013, 2013, at 9:00 a.m. THIRD READING: January 20, 2014, at 9:00 a.m. BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO A ffidavit of Publication STATE OF COLORADO ss. County of Weld, I Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley, in said county and state; that the notice or advertisement, of which the annexed is a true copy, has beenpublished in said daily newspaper for consecutive(days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Nineteenth day of December A.D. 2013 and the last publication thereof: in the issue of said newspaper bearing the date of the Nineteenth day of December A.D. 2013 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. December 19.2013 Total Charges: $160.00 $ I $ 19th day ofDe.em.e 2013 w My Commission Expires 6/14/2017 Azat Notary Public ROBERT LITTLE yam' NOTARY PUBLIC SI STATE OF COLORADO NOTARY ID 20014018494 S MY COMMISSION EXPIRES JUNE 14,2017 Affidavit of Publication STATE OF COLORADO ss. County of Weld, 1 Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley, in said county and state; that the notice or advertisement, of which the annexed is a true copy, has been published in said daily newspaper for consecutive (days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Nineteenth day of December A.D. 2013 and the last publication thereof: in the issue of said newspaper bearing the date of the Nineteenth day of December A.D. 2013 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. December 19,2013 Total Charges: $210.00 19th day of Decembe 2 13 My Commission Expires 6/14/2017 /./41 06K Notary Public ROBERT LITTLE NOTARY PUBLIC ti STATE OF COLORADO NOTARY ID 20014018494 1 MY COMMISSION EXPIRES JUNE 14,2017Y9 Affidavit of Publication STATE OF COLORADO ss. County of Weld, I Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley, in said county and state; that the notice or advertisement, of which the annexed is a true copy, has been published in said daily newspaper for consecutive(days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Nineteenth day of December A.D. 2013 and the last publication thereof: in the issue of said newspaper bearing the date of the Nineteenth day of December A.D. 2013 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. December 19,2013 Total Charges: $210.00 19th day of Dt cemc c 2013 My Commission Expires 6/14/2017 itcy eaie Notary Public ROBERT LITTLE NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20014018494 MY COMMISSION EXPIRES JUNE 14,2017 0 Affidavit of Publication STATE OF COLORADO ss. County of Weld, I Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley, in said county and state; that the notice or advertisement, of which the annexed is a true copy, has been published in said daily newspaper for consecutive(days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Nineteenth day of December A.D. 2013 and the last publication thereof in the issue of said newspaper bearing the date of the Nineteenth day of December A.D. 2013 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. December 19,2013 Total Charges: $210.00 19th day ofoece b•r2013 w My Commission Expires 6/14/2017 Notary Public zzaa- ROBERT LITTLE NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20014018494 MY COMMISSION EXPIRES JUNE 14,2017 Affidavit of Publication STATE OF COLORADO ss. County of Weld, I Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of THE GREELEY TRIBUNE, that the same is a daily newspaper of general circulation and printed and published in the City of Greeley,in said county and state; that the notice or advertisement, of which the annexed is a true copy, has been published in said daily newspaper for consecutive(days): that the notice was published in the regular and entire issue of every number of said newspaper during the period and time of publication of said notice, and in the newspaper proper and not in a supplement thereof; that the first publication of said notice was contained in the Nineteenth day of December A.D. 2013 and the last publication thereof: in the issue of said newspaper bearing the date of the Nineteenth day of December A.D. 2013 that said The Greeley Tribune has been published continuously and uninterruptedly during the period of at least six months next prior to the first issue thereof contained said notice or advertisement above referred to; that said newspaper has been admitted to the United States mails as second-class matter under the provisions of the Act of March 3,1879, or any amendments thereof; and that said newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. December 19,2013 Total Charges: $210.00 19th day of''h ece b:' 2013 My Commission Expires 6/14/2017 %tat. tel— Notary Public L 1OZ'61 3NIV'S3NId%3 NOISSIWWOO AW 464SL06LOOZ OI AdVION oaVMO103 dO 31V1S OIlSOd ALIVION 31L.n 12136O8 Thursday,Dec 19,2013 TRIBUNE D3 WELD COUNTY ..m"Hepreemmmr See E"mmnmeot H"vehwow. °ReaalmDmmemeavaeampm eM o CODE ORDINANCE 2013.13 nwne.. a¢woe.,elo010lo goyEN'a015510 mpnnmGlnlne:illsa"IIeH,m";d"PenwkR"w"ieio lN�: so 601010E SYSTEMS OF P0EWEL"G CONTI0051 ITS EM1gEW.EH• loothry0051etmenM.o..rnaanea nzolEm¢stemh.rYl ryael 10lps.nem °"oe°W'peratienen°Ne Imonsa fr ie'r"entodenm11rcarmegva150050 OATS tv 5E1arvDOnn a WELLn ATESFe nORRd EMMIssIDNEg5EETHE ,al9vxanv"ea W°°e':n'�rw,�"a'°C° S4110on"oI not II need"°tl"vtllhemil niece.11.lin airaia nlaalla WHEREAS the of Cu""1y Comisonnner1HTNGPoutN°pl =e ". • vryW mma"re l"° ,L"w;8E1"W ea 1 en me mePb'm in hizweale�ll'�r%Ipunz elreelment "a`m"Iaezoep�ewle u�e�>va lsl`1'x5. 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Nm 10 4°"drv1101010100NNman emovWzNmen and 0pazem°m from nos 010004 rem„ 0717110217°111775161111376177060111°1712612116,ust flows „eons in k 0001° 11104014innmnnersuea„NTS 610 Ploaew00¢z m07 001074110410111 eu e0P le4441141N xob°1'Ilryweontetanklxemr00 61111111171110a111"1"777171171"0671111617° e°Jeeeeueienetl`cl`eonoppvrwv'°Cmm lg e�elee"e0N164117¢4111"a1"002em n ea ems 1 a 1¢ 1 pre,s0 4+00or0 wpli0,on h • ey a n ax na prey [ann. m a a x1 4""Pte ,0100•-M 0/ Ytrt b br "071 "2710 41 M on I "nyang- 4 . •My m: M`m9' 011 a/ w m 1 9 n 0led,01 2 14001 ' "W sung=the %'P'21 00009"01 "e.a" rm • •'k e a awm"xx. na4Iniennt , n r"r. P a: °•nbam 110 "" n,nano tea.S4�a Ro"P9 „0„4„„s„,,,, em;.1„re0„no„l„ b. 1,101 p 14.610,0100. 00. 01on 21.10.931066n • °teem ,1 w 4; a i 044n• �0 0g 44 see l°nm0a0sgn q" 1 pumping a P. kern A '1111111711 . - 711s11"1174 1 6. Ilse rm(10 • 50101 nPB 7141 1 0.ro1 a Imo. 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In'"'n"000,0000404400N°wm 050000 a ;Le,pl1 n shall 541et1010 u"leaan.bad manes;°Ilmnnl ,ITae00 10,11mum,0001v Te.sa00,0e"n 0em00050400 `n001041Pero"A¢aemnnu004440 701°Pomil^I"00m0enel.en&ncm4t `.00'1146 eon 6,,100 blPeenbs4a M.L.a minlmgm 01,1600+0+0„017 mum 0igmupai.er. 00010"0 eumA g1°nhesuns aarmuxmave 3 waletye,""easil=m top "ned4xaen"e72:11le 771e1Ae Veer �e4mbar"i3"ero"mx wowlpalpml adambea°omonamaminpm.mingMamn"ewleatm°. e<nf3�eali' M4h,°nmm4mbeM"meawnlMON°m4eanl 6004016. m 01117114 0.40044101 51'100: ba. • mate.100010.000110pmrp mremam,m,l0e.00• 1000 4M1oe 110liu0m114 met v re'002reel.01040111emio0°00I4r 00004400x046 ..010;4a`m=gp°0lt000 a. an0vaemm104010,eew1"em1m4mtla0• a 1 1710l�o09002401"94°4`07.014 4 0 01 4000 0 4gin°w0PMez.a.w,a 4400004161±117a r 00x0 G n e 41'1131 11 rliow pea m 40101 fix np"Rm" Controls ° a' mu=1 be ;',^P.a° ril n4mmumOkanI Ior nowlmleluoen¢a 00,100 for 0 410000.000 The„me„stern bean ha„an„dmin andmxum el°00 nor00lloo inlrv¢ a• nj.rbeevata,^•0 m r 1 r to ee excessively Bah walehmenl°n"¢uo 000001000„0,e°re ng auerea ng reamvn,rev. 9E0„One 0600110 Tank 106000mn°v• ° „Cum 0„,„,noelall Mennnarom any 40em141°°vn&WIbP I„„„„10orlxa M1gx"01er ts. 0, mngemi,112.61100.2n lo a a0etl M` M1 M1 ° 866{z6"Mr",eeMSI0100dmo7'°`uwlsscucm 1 00 a v P P.9M1 9x1 L1 Ilroror°nnivg7=pap em w W alms eW • pP m N v mgravel, " a:sea tia"x00100 n 00102 ,01010 010" Muni • s• Agrer eN afe 0+0grcorennny inn', ,110100 adeu81"hl0001 ee.tl ap� gi00 • wxdp°e`0 ''1m1rm2 •0dam"04"mlmeewrenort 60004. �I0Puvw"a0ff504`nli"04oI50F°allee740ali:o4"' 6097eenro0110waeReim0,lmpemleusmangm°a„i„ n `"M re00 ten 44 01110°,00,101 1,0100 be 110001 oq400l100100" r 1111"m"neer¢tl nor "e _ 0,usvah"rinan enlWmlrsue 00d,1hePmnlAa Pum°. 1p E 110401¢001 ee0°""'00 104 nkLemeie0° exWem lua¢tl OM1e sae menu p"urerrewm a Chips Wx4 401 q`orm"eeNPA Alun 00,0116 NeapO"aa. 1 Toe O¢0 g"and 0mwxpn Cre"g Gas mOW1a"spe0°"wp0u 40004mrma"a / 061 001 "°"v septica"Xmna nave no ermprem 4011+00 or more than pop°n,may 04011 s, M Minnie b v1 en m f Iwmpa"me", e1vm°mpa"mm1011000M Prs 0000 1 00001,10¢000,b ob en b e noessin,'nom nn less than...rue°me reWlre40°0°llw velum,, „400 TO a1 em 2. ne lve shall„armletIn00nz hlphor Ilion N10l000Jf0R 01°6061 000Tlru1Yl a 441o10Me1.pim llhosg lmn rOs,mNentl a rte Mrmpemlvusmv a1n°spvmgare 400000olGgle eh4110eri am"mumoe r"°ea°r°w¢dump urtam. 1frv°mm°a non " 0e"p° inrIgenelam6 aepv"Imaolu"m0l wmmawa101 a. 010me0 :'000 0504111 011°1 10000011 A111601.0• 1 0.17 —30670.040.1.010.3.0 0E a1 Ertl°¢ 010 b 4,66„64„,„arobrprr32.611"n 0 or a113 0 100 nxe-00 r""pmwlNrooln Ne eooess npeninga°0 nomnpl010.9 Sam 3610'110.SallTmament Pka 601011 EP a. Ma"u10e01000 Ikelae1Pdanteln me 901 mm0"Mmlmm"m I4evlln"Iwkmp0rvaTh v0 eon 20°6704. 4042.,Mn"e10s11n" ,110001 "Oalla76647.41`lazemdin9bmmu0nurelsl0000040010l0041Nem4001. Ro' "1M1.e"1M1empamumd° 1nawA reAV Ou 101000 JsO tl INoll4f1vmma.umd am owns., „donee bV r I gnhe „prose tT by R n e0,o • e s ° n [p444121A7 ng gN4„rate. me" „al a sea gg are Types v,„sniped 0.•3"m 0106"0 s °1.60010 m,a COs. Ear le Cast cm oaza manhole as 141 2D 10„60 across shell 0°A a sninngl4°."�eaMe1bmµenn,,,,nm;0n6 Pe a"Iwrle° g0000up'emz"isil DT media m"p Is "m ram, _ tl rl°p00001150001011p44004 Amyl lent a. p kl g orlon oul'elsY°°Z6aod mu`tlsIr61ume"pan a • 0j" 0000001:10004 04+0 spa 01 one re0110014001lpero4a110h'm`,IPel?vngnmp0m"Oemeen10,mtl w"a y1 2116°,06¢.c""""11°11'0010°"""°'"'"."m"'0100 0aplmels � a dNx tl ' P. melmnua1Je sunk.neaInnp or bed nV0p01 'level or emu, ol11 Q "r em„0.120 4 ng:731 .I0 E�oenn C4""relss0wr0Ta"kom°oN onnnn „Its+0 bottom wee lereev leaf"'mr°e tin 4eepgrev°r "0104,0 moon 11"3 p a °salami „or, 00, G 0 lmnarM p,Psm1 Only mmwlrs. any „0101410010010 te1 'epa pAI=rt le4mg4ra�."'1 °` 'aa11nleidlir De2r1Inee,„pll.,, b1ZETgs j6lan o m"I�gbl&leun6m11oian 1 n mrmvn"pwen"e lelm)RRPp ea5nonnlnTWIe30-019. mMrbnaw 0111° .0100„ seppepgi�o PI 'xmeb00q for montane moue lea by each mmanpeWeemmdam1bbercede Banes for adluolh2Ihi"6e of m°°Mbmrm°m am are InTetlex.6".101 a.11117117111'o 04,0001161160.260.0010r410,0004""0. 000041+00 040000el°o4,li o 5 reulre. e" . 9. as a S° 6 mmmx„Nn4."P"Y1n4,"AL01 boo°' 004wm11wl.nm00 mmp 011 omen ng n1 y41„a mrrtem"b e1p"0gn91"eermrmdaammnmer°m11101a4p 01001012 atoalp,px"111mprmemnre.Ixd°I°^I mina 0=!104, InH:a41Aan4En1mmm0m W0wr04aGN600tml CllBlp"I4r mar' a7.72°717.1115° 02140°0°0 ze amp. sal nm„m,Amin some feet regalrepapge9g"Rn'.000 g400140rl pli emm 101 mm 0. 11777711""111117774"177"177171"171""11"0,40,0ho01bew1°"9anM 1 811 1 0 ea 0. -9M1- Adry4Poenmeee�ae06ra„rs 2r 700041 d 41 1 4 tl1 F. R40rShnz.F00gmsenume470(0001 040,0 Tanks 01,01x0011¢0011111NOh'"a`1I sere, °or applIcanall ere In inn]20.100. a P 0110 1 4 IPq °ad 10 0107 M tla Reps 1 m 010 :bare atom nx ltst 14 P'_re 0 1010p tom°�7uP0ka�da0YY100m0°'wm" q P m 0001°00 a"11x"n6 7.0001::::04:7:711":011:0:. .0004 x4an map B. a ma,wp„• ma 01010010x0 111 4 r09ed1Ssm`ss "he0nlleaGe 4 Nneatl 0100 00.0,00004 r • 0 o Y2. Mem sell condition, 9 . hall 72. All I0n6mNbea1W a"0 e01N0Od bV me m°"Nammermm,n°"01res4es 0""37171 '1NEs"mesm.11x101"aaenxlarneum00emlenAO me sertinns ogan"oro7"1711 O . :. • Thursday,Dec 19,2013 _ TRIBUNE D7 different „Rionmay beslseo for lbeumatlbx,M4 cearenl long-term^eaey a mast be a minimum of two root, naepe^mventilation.er' tea urvl mast tnOWe nppght sad'eecbrpreeleq 3 An aul^malc draMbuben valve must be used. 4, Typical loading rates are 3.globegpa/112.Hato must not exceed 50 gptll2 annotate, reaz sySemmustitsamtualed by Om design engineer based on Incinerating Toilet;An apprw"tl Incinerating bagel must be designed trod projected dolly flown number of Moms.and soil types. Designrecrcuaion Mlles may be 41 to all. nlloable federal,state.and focal aimpollullt require. Soc.304MT0,seeing sANTRAL wllepttdlmm Ilia sand Cam must be discharged tea eeilleeaete"1 'tents ov manufactures NaW Icns. A. Dosing man be lor soil treatment we rflstbhuson a dose must be a ECempeslinq Tdllels • oireO norledwwand the dosinglrequenry peeing systems must be See 3-11-40.Rock Plant Facer(Co sauned Wetland)Treatment Before a Sod an p s el dleplosil of µdc^ readily Do bee professionallTreater t/ee omposeblle household garbage that amt not nth ater'oro Ill•Esa d ara Sea 30.10.00.UV Stations pWarn,.^ lam miss)be 4saiPSedh die ette me otter fIitwoePtarTO rercct beselmeat.Ilan["a Yap 9 C nat" to mmernmedom Ma . A as "o edsde for k be peuheaad p p a. M omed m Me design of tho offil eetwe of paM aerobe, li r rte CosskblMuent to a provide gravity omd sod treatment menthol le located such that n il s n 6 Ian e b p tl aopm and depth coned media- noi bo toxic to the promos or hazardous to t d h In P a in p o form p ndddd by M1e vl¢ot,to q tlb Pereaalrom p g p" tldcamoaolon"e C. Tb deed el lufellem ckpant filer mui betl bledt ax Ire¢ essenitesderoem e byM1 um sit mart be p disposed tl Ibantth' polo men ora loo 301000.Sol own isoni using so tools foot ass Is re ondcommeldedxapublic hoellh nuleance, geplammanl me area. 4.ape If a eyeleA solid wasteoal^mwmeepeel. A. Soll repleCeme^I la pemrllled to briny the SRI Malin the lequbemeels of salt- "a eetmonlu^wnrppharananlrrylmenLrc of beside od beesel ho elan must dldlesltheaeedott at to low ramerawro. be ela[Ioe,doslpn and eblo,o¢eell Added soil must men the specifications of send idler media,es spwllledln Mr p" hl bxvuse oarysl^m pntl seasonal vslrCF amlarlCleetpestl ptlonfls the effects lb p road aserrmny te manme¢mrarganealmmrow. 3011-30,B.l.All added eel must be completely settled prier to Installation et aa. pane is 91u enddedass approved by the design engineer,The feuding milder ARTICLEXII F. Portable Chemical Toilets 'span)l:ilele must be used,Pressure dlstebulion must be reed. oEGIGNCRITERIA-0MEP FACIIIIIES Sao.2040.10D Repairs S 90210 WasowaterH ,Toile Wales I. n portable n deal a ett n Division. edonept durum construction or Under ' A. Whorl space sn are o cld a Al OWLS treating to wastewater v N I't Proper emergency / umbuntings as is the her d gravel nl deslg and construction nee treatment diNredpaieal O po and chham wastes tone MIMIC¢oUtne number �.TrealmeM Systems()Morahan Discharging TAugh a Soil w ilcris c5&C fen0-124010 higher fowl ry nsyse . send°be serve. don a or r system B. Wide Beds:For repairs.bells may be wider than 12 teelwllneul being required Sec 301220.Evapotranspiration end Evapotranspiration/Absorption Systems. A. For systems aitihmglng to dials30-2-16A. Wales,see aeons. lo1 receive ellluen meeling TraatMent Laval 2 quality Or belles. A"eteyolraeeyi,ale^ayslemmavbe desieeeldN[ondaeresepmagenana e. syn^ms that descharge'ter m^nlnroughaugleeeteeeetereaet aseedfitor C. amp Gravel Trenches taetyeapenenly,ter lnaelllypes3A,d,dAa^J5,ebeelftlonn^yelesbamntld^md yslemmbsl:lt lira length of art absorption trench ofbedmoybe alculaed by allowanxer n system erevapolrznsplrathnrabsormion syslam must be esagned et,prdwebi00aleti a stases"area oe addponaldepth et payolle excess of nl4:Ge-heloeelCO bob designed by a professional engl^eer, a fte B&T o Publlcngaallh:ails tern dsdbu'`n pipe eavring a IOllowingloreMe: I .3W-it-mend or prorate or puby flambee of untie tiskor Aeurtea MO 00+21 - 2. D include.but snail re be limited :d' dad vmea- O ) eatendsys design,p of give end unan mat " sew L fen ou priorlcr Beep gate pm pp°nrepetiewef Reed'wide,neebog o wve-temand a er drainage Rayed b b d nsnnmems he aortaal:ow w-wish au trench d' feet "rdiY "' Da ddiliotel pth i 1 f g allnnv II the minimum required six following formula may, d guide 1 determining the area neees 1 Ig n criteria masma requiredlet all pmmnted - M1 ofgravel bI a distribution pipe. earyl p maprmio p' k 0 y .pursuanllol Area fin hogs 0004 Flow 1I *Clone aortae) • Maximum allowable additional depth Is live loot. Lake EVapOration Rate at the 1, If effluent disCharge is 0e into almost,whisb the possibility MOAB formate 3, m Mellon ass asp loll prClly hcl II 1 lug Sla(In Inched payed) Id' M1 ell g h 1 at the p to. . must be pede,eeda the4o eedl IIre11w sleeve depth(soli paler bcr sill sane alternative, seam,may be g a dW 0 p must ht e minimal standards: Ilully wnnnb^ n Z i monthy water has".bans system, a for totalt age4. of average Pay lewimr ly - nwhmwep" pi is not shown d m a r duly d25 per 1W deep gravel systems.- ecal a lar. argil:m[5)mm ms an exoed ed oder any 1200 pat nTees ive consecutive samples,and no stogie ample 5. a Me design provides alas h(sand sWaures trash penetrate through the rota firm - standard`wedgy ahe:emote biochemical oxygen p1 Y be equal o10le15 percenteofte bed ndlcBO0511m- e iteereesere l:sreue"...Tabwe any O. wm6w me a„eovin roses men Ne:r[e ascearee a sen:on eu accea ea. eode s must be aee"rmb spaced r reugtton . live,5 oa pl 5p atlaxtl id 3042,40 elites Repetition. s.ed eendunblled a mapoleert5Walil^m evspc nemm^eNabxlpnd^bads lot `peat pet flier abet averaged ele nnv lame nsecuulwe weepi cc. mil ^ ekepu9meelNo aradakore eequlremeed itTeble 30.l a1 and be eppmvaa Tyr Na E Higher Laval Treatment.Options design engineer. 2. Iftheelllu deed tdhuman is readsbeln an area so eeslefueaelt protectreall them a)ofdisch Of arebmust eet cegammllmhe dlmhe rid effluent,the slgcset et the 1. Dalg criteria for higher ltwuraelmalav:Iles are in/glide xl. Ab a0'sw peilleteleenetge their meet veeleom needs at T teem one xponahlip ARTICLE XI a ono nil Sono for EvepoVansp4allen Soda mama of the hollowing elandt,dei DESIGN CRITERIq—HIGH LEVEL TREATMENT SYSTEMS Sieve Size Percent Passing The 9e oN[mean of the lead cal;form sevily must net eeaeetl sea par t00 t00 miltilma when eeeeaged war¢try a xne¢wNye sample;and no stn tie sesyle 3te.30. .0.General ,. do 50m ceased 503oemfcemorm per to0milliiiers,g - A h^r ravel aaaunml wlenel by a professimel en ee a e a"Neeee yan enhe�Zdard lwedee carbonaceous bromemlaloxyga^ H engineer. Memo IMEOM5) a not amend 5m'ngrams per leenttten averaged dwreey 7. Alommie are twat-annual COnSecuave samples. e.Cp!Ieornet ley enlslstem maybe public Pa^w^technology systems or avepsn daN flows ow„al then le tt L provided too met�edran Including over RICO late veer ¢serer ere suspended solids masem rezceed 30m:F ¢:p ace area must ieer¢taco]on net nw Ilgram per lam oyes anym nol Pub%I[domain technology systems must be designed.Metalled and melnebmtl the System is designee as an evapotranspiration/absorption orpti nsystem,tee E. T determine compliance MO the standards contained lin Nexsection,the according to established cnena When design criteria are net specifically prodded In Bamount1 etc 9 evapotranspiration apaclllae maybe reduced by tee volume required frequency or fagaf[ollnm CBOeb and total suspended solid lac u Regulation,me enlede used in the design must be from reference commonly of effluent absorbed by the solored on am longiarm acceptance relator'Mat sell la must be padmocd at leastomen per month when the system is in operate^end sed as an Inddusstryyvstand^h and the ctlarl¢most be°Mein lea design, type. Igo range submitted a the[golden forcomplMee sith the permit fequlmma"k. mhalPnptlralne stet end be degignoet Installed,few a le eelsed according to s eeoeepi to(Welkin if lhoo system Is de summer use only.Cie auaace F. Melhade or Analysis—Sampling Points: s ebyed matt Imalp adey Cat M 0.0.0d for A 6 . Water Quality Centre Ohisien. u x rw^d etl c po to Ireton beds and obtain bead may be under Allellluer samples must be analyzed=cuddly tolls hodspexrlhed C. Soil waunanr aeaarfm nrgnm level wamwtaptemx mull be Pan es feeta In the American ge Heath xodarYn,Algerian%Mats Wetha HssenatIoh.and pressure dosed Sec 301230.wastewater Penm rr ,Em^menttFFedeation:standards Methods for the Eeemietlm of Water 0, Syslemi must be capable of accommodating all andepaea Tows dergaet a d, teaateee prods for singrerlamay horses is.pto"o ee, prty.iiTyls0mp:irg AM a location that is representative ae discharge E. Ventilation arseem Mechanical Inedne B. Aseptic lank mus precede Ne wastewater ry@m. repay Ow air Into and al s sedge protected pond. ARTICLE XIII procure. w,leo,or warmvapore¢unualbeel,Y C. The depth m me a&Sian voumeetthe wastewater pond must be live feel, 0p"a "ndand Maintenance F cCo Dry bemamorenslanrll"Iesd All systems s mumust be ttea eedto indeeee D A a ICs pond must have two teet of Iree board abovethe design volume Sm.30.10.10.Responsions. l openings¢ rya et Ne psfd, all p PA.'Thewrneersmustbe rvs hleee"geclan lino P Jpa¢la ptieaiy ssigne Set,30.11.20,Teeetmeat Leas a^a,odre ptpeetlya, must be lanced keep out livestock,pats.yarn-enact and go:Inabmlyh been dabatlion.assigned to atenam cr(=Tin,pl pals[, sahib 0r Suffice LabePo¢Icn. opblkgamma to e^ae etl om data Table measdsea see ulede F.Pwasewatmponyamusebalealg^odo^Nebaxeclreonlhy water balance Gx.13.'320 Saec aLuba py rv° y Haab imva gars gn new pinup a p p spa doe pe byr aiemfo 'rya, xname aelnedWnegivens edbvn W Oelry CdahN o" g G ad poral sod nds must constructed Iftiadc do mcaeplanedalas"oywousala or anmt 9'e'instructions m, sides earthy. achieved 8 Man roseattached Gee.301'30.said a . raoembraneld eeee mustboaeed,s u _ Cs,an mpermeab eynNe[c Geo.301330.Mon:l5Mgand Seaefarq • A, sand fitters,such rise lined lnlmmlltan15and filter or recirculating sand tiller, at lnclhdepreventing aquatic and wetland plants from growing H. Pores OWES ter anti monitoring of effluent is requirtd,a delegated third maybe need es a pre-reatmenlsyalom whole the belted animals collected and H^on lite edge of the pond,protecting srtlee from eroslen,and mowing grasses on pony mustcollect and Met effluent samples to ensure compliance with the provisions msWeln peten oil treatment sand flMMer,ahsoll roplaoemenl systemu,eorepmounfetreatment sea the berm and around the pond, of Ibis RCpulallort Bate, Wastewater pandeteasl to dogged by apmfeaslonol engineer. BEronSamplinq may be required byille Division Inx^ercllon wile anenfororvanl oolCl"1"rmllleet(Single Pass)Sand Fillers Sem 30-1240,Vaults and Vault Pees C.l Any minor moccupant of progeny on wMch en eWlB is localetl sly roquasl 1. General A. Vaults ul)Me use In new xtMlcllea are pi-ohbead wheat a property son the Oelilen loudest and lea an affluent sample from the system.The Blo:on may a The ileera'.ngm efd used Ina sandliele must be deem aed,e 0" Vzurvs mane wynte eunem Nclollomn area. art:Ian.. Mese sermons. Mon and testing services.The path must PT lot boomen 0 25 amd 0.60 nom_Ina AS-W33..1 t 0 ^ percent f passing 0 s Mere theca k Minted me pfef prtperlytMen cannot aemmmaaa h d by"IyeONIS AM Mile 25 AtoDJ mile=and tams effluent ad mash p eeve es be l nTu on Jno a eazltrof¢et Weil an OWISeIN soil red a ns treatment be clamed io era a sr each p ie for ads lasted.Payment or Such charge must es c. Daanbehotm atetseiipermyrx crave or an owlsw se tr stator, w e v • h" seal n v p ry. a1M Mottled r ) ctlI h q ebglg^loligpe .ut not 5)rb plain aced te Mope.thenelNenl L by ti eefrog ass temporary. a. Indication etlsemen on-rauemroashet Ito daone. et storm must a 1zerh Conson ad/Minch Ammo. 0, . rveue oPol mining opera- nb of n e' •swedac M b used g 7.' A vault system seasonal vaev^ce apprtionar oved bytte Board Public Health. "thar,n mantra ea. " E M 10 antl aho sd"arailon distance emus beef—odd w:haralloi listribution nnes must not mooed&Ix three feet[eaNlee slaws, 3nth a cant' Allele hep tithe nnma^ed n Nsvauh must be Iastewater flows are separated,mos as rian aJ-guaete ei lV 3. Sampling a IV"ar Works Ae ssociation. p d Arnett Pubs eon banados-inAMER:B;on Pales soed0WMS' ndMe"l^oa fort Exam. ono Water and Wastewater.2151 edition ti Healy ' d sand filter application rate el1.0 gpNN2 mat be used. 0, APatel Meal base a minimum 500 gales etxavo volume or be capable 01 BE I`FURTHERORDdehbD by Ina Beard that lee Clerk to the Board be..and hereby' ,ding a mnmumo tee Moaydesign Anr^arm"Ewa Ner Most not be used o realuxseraer bataes no sN.Nowraeyo[ ti n the amendments contained g C yin erg conform to TLIbettor. sue deedbeefg sad W G gill 9 easse"Ilmum 0175 press h y bo comrade ATM LOJ d z Lined soda eava<y°must tee miaMeno. - - �9 . P 91 ry. P p d p gsubsecians in 861400So, dhoti send filters susl have en npe Ieue Marron the ses and bottom of no septcteaks Corn-etc l00 fib et Me eai th and Ir polyalanoss ester, dot BE IT FURTHER the d If y subsea-UDR q s tar • Misr TOO liner man coast or a 30 mil sealed¢PVC raaeml It equvepn tanks may be MC aevaex If It e[amr ptad Panne dlrcdacedify- h by rd' pdecidedl be b Ammmueemmm diameterundo,mopee mss be used.Thevnf"rtlran leeks see As bsed aessuits,if e¶t terlllmallbtaelarsr ptadlei tdsltys,ieedaceytfy' errnelge,gletes,or yhears sl lie ad'grieetge le lIe sepeessen held at drjtsd else dmybsaetaasinehaeotrroedae-dials fife otsst be Ides d.Tbebltdet.draieieglhrtlletthis dd.. unconstitutional.such decision shel not often the validityor the renam^9 goons peps must hesaetlnded bywee a oar, ^ erareror embed stone.All of Lopoi lrhe Board omwntY oemsa ors e,byd.naresbeeir would nave the ogravel or stone mat ease"2I/2inchscmo^sd mud be retained eoe 3ld.Inch P. Contents of the vault mustbo pumped by a Weld Counrylgensed Systems en doe'Ns Ortlrtaete In¢wee and awryx side bsaeion,paaeaph,sssbtee, MsraleMred media may be used as analtemagw to gavel or stone. d records ofedetheanee and disposal shell Oa maintained by the and phrase mmeeeo11rteepecrlhe of the loci that any one or more lesion c.a t Uunderearen e5luenl Wlena beloee the modglarshel be dupeaed rod soli owner and 2n11ablefotrevct by the ma ubseglns,,peergrapphs.se e"ces,[Laure^.or phmssas m;ghl be declared.be dam a e Vault PAW se"a"s au: r q, , 3. Waned(Open Bottom)Sand Fl:le ai Effective aldee ellev vaultpnrylmust be w loss Man 400�attheaMcural NOTICE a. onobottom rsurfDeer bedreClef musmbbo lass Manrcmleer above me do aaanaw fedolanndloor ofazak.The vaults a,privies and the structural ground bedrock for Installations In which effluent percolates down dwA vault foal be built tef toIncl PUgrVANTove,waelnrducey and onRule chadully OM;e owd Ndmnded.apple ward through uge°m ash e. use Soao°mmplateyuesl,we earth mand ound omundgM lops lmtef asupeb Upolndftst readi was Introduced.2d 1.amen duly mahering esdastandpprewg• A. An unlined sand filter Is to be sized Meal on se Men 30-11-36B.1.dllt endure Mat prang, away from In mau^lleefta babe a Mar pen lint reading ehDecete chsmbes alibi epublic rd.heledngenng,Wefaount balm riser 01duel Nre slopes downwardlous materNodu irolru[lOW as'd,ovsr, Hmheeulartreee held in the°S mot Greele.Csr6e[alacrn,ennoWrnber3,- <, Mounded grand Filters(Moons SVelame) aorta asily clenablenepplevesMlmpervlAisntea twleR gopeehd and covers of 2013,20r13.Afi Betiding,11 any mar^ar.Gfonay,dittheo.PoBg 80334 ona Gacembegge ' m. Wienehe Infiltrative surface area of the media receiving watewater otfluene Is lighter masheeteaning;feud mal^e^L w^0y must be fly pre3letl t"IIt No.16 or etelcffbellod to abase end any mannerin Me reading of sale OlPmanoe • above h natural groundsurface,the system abaft beeatddvretle mounded sand 3 A gnu deuce snc agdod lora vase pity. may heard. b. rod do .. I unlined Copan M Ap b the Boarder County filter. Pease contact the Clerk elite Comas q e pea 1 1 ) y of Inn nearing id esthetes.),ph l 1 3,E tl n sfit r app MM meter.only¢Pau asholding k An pp' ry you require' re Mparticipaten ng. a gh basal area andG dq rate roust W determined from Ma Montag tae, loran OWLS permit mum be complotedbYthe owner and a final lasPention mast Ile dineunder am Me mound ass debt a..an with proper re'Jw es spectaedtn Section 304-70. oard 01 d and owe,.slate mound mud)g p e0.fool vaarc a r. e42.50. County 9 Y ri b d h B olden o e. The dui[ mounded planted tnNasu ad g 0'L p 9 Cdik Administration Building,of County 11 OS O located Mann Me Weld y g tl g by 0 0 tl .0 FIOy VC° tl b e accessed en ba e boom county C. gaar[aa s shall D lt at CI y b o d, g a p - C v Web Page)e d ) E Ir u q d la i rig o approve of r NSF may b Included d II T of your E g q d T 0 - Mall Irospcnde"Ce' the bin.elapse send a copy to egeaCkeksovalclaus. oll ihegilgi9.17grafIlUr h thkk VC aregJ pen lr" P. P p G 'g In may C e c',the aECDND mEAOIHG'D o13 grog an, 2, Aminlmu I nunder-drainfete he et Theenderpfen fmachl hl p ry p I 'Apt bI q eh Lol tl P bine Boa N, TAMS gEAOING Ja ry30 301 OO p.m. pe roue be...ends, Ne ors ¢re c loco v junadgm weer ill s 0 111 Ion. tnheraveor etene must passe 212i^[e summand musts retainedeoe 3/Ylnch C. Aneseenlln0 or composting OFCOUCO/ORADO PS n. en a Mmndlarvayse urged no anallemalaeto groveler slog, OVNSl,00slalledeot'malln lrlgmrybeuuge,,etrstwasmwherean ESCAPE, COUNTY,COLORADO a Rim size 10101 roux Subject load rP'mark), µp: ti ate cWu(mg. DThe robe, eambor, ycerinnt(005010)must be less g0. uses a 200 mesh love Coloradoawithin Panting, exist).'bit compartment may ee must Eo idyl can maperen ¢tth's How a'dn,and prodded nce installation will no�esult Mown"- , a zo13 bent considered la beg health hazard aoderetmmed by Me Oyek".Comeaexa NOTICE Pursuant to the laws of the State of Colorado and the Weld County Code, public hearings will be held before the Weld County Board of Public Health at 1555 North 17th Avenue, Greeley, Colorado 80631, and the Board of Weld County Commissioners in the Hearing Room, Weld County Administration Building, 1150 O Street, Greeley, Colorado, at the times specified below. A Second and Third reading of said Ordinance will be considered by the Weld County Board of Commissioners on December 30, 2013, and January 20, 2014. The Individual Sewage Disposal Systems Regulations are available on the Weld County Website or may be examined by calling the Weld County Department of Public Health and Environment at (970) 304-6415 to make arrangements with an Environmental Specialist, or at the office of the Clerk to the Board of County Commissioners. For inclusion of any correspondence prior to the Board of Commissioners hearing E-mail egsicka,co.weld.co.us. In accordance with the Americans with Disabilities Act, if special accommodations are required in order for you to participate in this hearing, please contact the Weld County Department of Public Health and Environment at (970) 304-6415, or the Clerk to the Board's Office at (970) 336-7215 Ext. 4226, prior to the day of the hearing. All items scheduled before the Weld County Department of Public Health and Environment or Board of County Commissioners are subject to continuance, due to lack of quorum or otherwise. Contact the Weld County Department of Public Health and Environment or the Clerk to the Board's Office at the numbers above, for hearing continuance information. DOCKET#: 2013-85 BOARD OF HEALTH DATE: December 3, 2013 TIME: 9:00 a.m. BOARD OF COMMISSIONERS FIRST READING DATE: December 9, 2013 TIME: 9:00 a.m. REQUEST: Code Ordinance#2013-13, In the Matter of Repealing and Re-Enacting, Chapter 30 Sewage Systems, of the Weld County Code PRESENTED BY: Environmental Health Director, Trevor Jiricek BOARD OF PUBLIC HEALTH WELD COUNTY, COLORADO DATED: November 6, 2013 PUBLISHED: November 8, 2013, in the Greeley Tribune , Affidavit of Publication STATE OF COLORADO ss. County of Weld, 1 Desirea Larson of said County of Weld, being duly sworn, say that I am an advertising clerk of NOTICE THE GREELEY TRIBUNE, Pursuant to the laws of the State of Cobrado and the Weld County Code,public hearings will be held before the Weld that the same is a daily newspaper of general County Board of Pubac Noah at 1555 North 17th Avenue Greeley,Colored300631,and the Board of Weld coumyCom- circulation and printed and published in the City of Buumgellso the Hewing Weld County she limes sped- Greeley, in said county and state; that the notice or lied below. A Second and Third reading of said Ordinance will be considered by the Weld County Board of Commiselonem on advertisement,of which the annexed is a true copy, December Individual geusp°�%mi nsRogulationsareauail- has been published in said daily newspaper for able eW ln thedC3ald County oouuntyyDepepaWaage e tot rPu�°HHealthand Env°ron• consecutive(days): that the notice was published in merit n ironmental E,�lallat make et tharrangements office ethee Clerk to the the regular and entire issue of every number of said Board of County Commissioners.For Inclusion of any corm. during the period and time of spondence prior to the Board of Commissioners hootingE-mall newspaper egaldkeco.weld.co.us. publication said notice, and in the newspaper In accordance Willem Americana With Disabilities Act if specialP on of accommodations are required in order foryau to participate in and not in supplement thereof; that the this hearing,please contact the Weld County Department of proper a Public Health and Environment at(970)3046415.robe Oath to first publication of said notice was contained in the the Board's Office el(970)336.7215 Ext.4226,prior to the day of the hearing.All items s hedltadbeforetheweldCountyDe- Eighth day of November A.D. 2013 and the ointment of Petite Health and Environment or Board of County Commissioners are subject to continuance,e,due to lack of quo- last publication thereof: in the issue of said rant or Pub- lb Health end EEnnvirroonniment or te Weld Clerk to theccDepartment aNS Ott Ice at newspaper bearing the date of the DOCKET*: OETlre20s34e,15ror nearing continuance Intonation: CKK Eighth day of November A.D. 2013 that said BOARD OF HEALTH DATE December 3,2013 TIME: 9:o0e.m The Greeley Tribune has been published Caliber C31nM16SMJNERS FIRST READING DATE DB• ca continuously and uninterruptedly during the period RME: too a.m. of at least six months next prior to the first issue REQUEST:Codang,Chapter 82013-13,In the Matter of Repeat- counlyyC nemn0.Chapter30SewageSystems,oftheWeld'ode thereof contained said notice or advertisement PRESENTED BY:Environmental Health Director,Trevor leoek above referred to; that said newspaper has been BOARD OF PUBLIC HEALTH WELD COUNTY,COLORADO admitted to the United States mails as second-class DATED:November 6.Eo13 matter under the provisions of the Act of March The Tribune3,1879, or any amendments thereof; and that said November 8,2013 newspaper is a daily newspaper duly qualified for publishing legal notices and advertisements within the meaning of the laws of the State of Colorado. November 8.2013 Total Charges: $10.10 ftuw 8th day of Nov rob r 20 3 My Commission Expires 6/142017 4-49 /1,16-- Notary Public I ROBERT LITTLE NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20014018494 MY COMMISSION EXPIRES JUNE 14,2017 Hello