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Home My WebLink About800204.tiff di- a " ' ' •' 913 _.-. oclock -r MSEP 8 1980 g0 • Recorded at • Lt ) l - ','I RESOLUTIOMtate of Colorado, Weld County Clerk & Recorder RE: APPROVAL OF AMENDMENT TO PARKLAND SUBDIVISION IMPROVEMENTS AGREEMENT WHEREAS, the Board of County Commissioners of Weld County, O 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, on the 23rd day of April, 1980 , the Board of County Commissioners of Weld County, Colorado adopted a resolution C) establishing the procedure for any amendment to the Parkland Subdivision Improvements Agreement, and WHEREAS, Section 6 . 3 of said Subdivision Improvements Agree- ment calls for the installation of a 200 , 000 gallon water tank prior to the issuance of any Certificates of Occupancy upon any buildings built within the confines of said subdivision, and WHEREAS, the developers of Parkland Subdivision have indi- cated their desire to apply for an amendment to said Subdivision Improvements Agreement with regard to the water system and storage requirements of said Subdivision Improvements Agreement, and WHEREAS, pursuant to said resolution , the Board of County Commissioners held a public hearing on June 18 , 1980 at the hour of 2 : 00 o 'clock p.m. to consider the application of the developers of Parkland Subdivision, and WHEREAS, the Board of County Commissioners heard all of the testimony and statements of those present and finds that the Parkland Subdivision Improvements Agreement should be amended to require that a 100, 000 gallon water storage tank, rather than a 200 , 000 gallon water storage tank, be installed. NOW, THEREFORE, BE IT RESOLVED by the Board of County Com- missioners of Weld County, Colorado that the amendment to the Parkland Subdivision Improvements Agreement, as hereinabove stated, be, and hereby is , approved. 810204 a�� `.�1_• • 18:3 1a The above and foregoing Resolution was, on motion duly made and seconded, adopted by the following vote _can the 18th day of June, A.D. , 1980 . BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO (e /j/ 4(y (Aye) C. W. Kirby, Chairman (ABSENT) Leonard L. Roe, Pro-Tem (Aye) Norman Carlson (Aye) Dry -5-i/ A Aye) .//.� 'J ne K. S nmark ATTEST: J/ I t cww1ctt 4,7„, 1 Weld Coypty cl4firk and Recorder and lerk to the BBo 'B.Y 42:4-.4 -.4 o LC* Atli Jam- 1_peputy County erk / APPROVED .A-8 TO FO : t _ '�eounty A t rney DATE PRESENTED: JUNE 23 , 1980 9 18353^' 13 • . -J ADDENDUM TO SUBDIVISION AGREEMENT JJ THIS ADDENDUM made and entered into this / day of , 1980, nunc pro tunc June 18 , 1980 , by and betwee PARKLAND ESTATES , INC. , a Colorado corporation herein- after called "Parkland, " and the COUNTY OF WELD, by and through its Commissioners, State of Colorado, hereinafter called the "County. " WITNESSETH: 1. Parkland is engaged in the development of the Subdi- vision known as Parkland Estates according to the recorded plat thereof. 2 . At the time the County approved the final plat for Parkland Estates, a Subdivision Agreement was executed by the parties covering the duties and responsibilities of Parkland with respect to the development of Parkland Estates Subdivision. A copy of such Subdivision Agreement is attached hereto as Exhibit "A" and is, by reference, made a part hereof. 3. It is the desire of the parties hereto to amend the provisions of paragraph 6 . 3 of said Exhibit "A" to read as follows: "6 . 3 A 100, 000 gallon water storage tank, as shown on the final plat, shall be installed before any certificate of occupancy shall be issued. " 4 . This Addendum shall be binding upon and inure to the benefit of the heirs, successors, assigns and legally appointed representatives of the parties hereto. IN WITNESS WHEREOF, the parties have hereunto set their hands / and seals on this day of ()Wt., Wt., , 1980 , nunc pro tunc June 18 , 1980 . ATTEST: PARKLAND ESTATES,S INC . 1it.- FTAr By: /9 r7 4, e-ix Secret yam- President C/// ''r et. BOARD OF COUNTY COMMISSIONERS � L O�wnn WELD COUNTY, COLORADO C R^ WeZld County Clerk and Recorder a Clerk to t, e B a d By: X: z < <� f Chairman / By. � _ 424 ono __ ), eputy Co Cie" '\ 1 WATER STORAGE REQUIREMENTS REPORT FOR PARKLAND ESTATES SUBDIVISION WELD COUNTY, COLORADO 5;, C k\lCli o, Go June , 1980 �FyO Job Number 49970 G ` -Prepared by- MSM CONSULTANTS , INC . 570 West 44th Avenue Denver, Colorado 80216 (303) 455-7321 TABLE OF CONTENTS SECTION DESCRIPTION PAGE 1 Purpose 1 2 Design Criteria 1 a) Water Source 1 b) Water Usage 1 c) Required Fire Flow (FF) 1 1 ) Insurance Services Office Criteria 2 2) Local Fire Flow Criteria 2 d) Insurance Services Office Grading Schedule 2 3 Design Calculations 2 a) Available Water 2 b) Maximum Day Storage Requirements 2 c) Fire Flow Requirements 2 d) Total Storage Required 3 4 Recommendations 3 • . EXHIBITS A - Longmont Fire Protection District Letter LIST OF TABLES 1 - Water Demands 1 . PURPOSE - The purpose of this report is to determine the domestic water and fire protection requirements for the Parkland Estates Subdivision located in Weld County, Colorado. 2 . DESIGN CRITERIA a) WATER SOURCE -' The water to serve the area shall be obtained through a series of four (4) wells , each capable of providing 15 GPM. b) WATER USAGE -- Water usage is based on past factual data as established for developments such as Parkland Estates . The flows are based on a daily usage per day per person , and they take into account irrigation , washing, and other related domestic uses . The maximum day demand is used for computation of well capacities . The maximum daily and maximum hourly demands are used in the calculation of storage requirements . The following demands are used in determining the required storage facilities . 1) Well Capacities , Maximum day . 2) Storage Requirements 24 hours of maximum day demand plus fireflow. TABLE 1 WATER DEMANDS Average Day Demand @ 125 Gal/Day/Capita * = 28 GPM Maximum Month Demand @ 250 Gal/Day/Capita = 55 GPM Maximum Day Demand @ 590 Gal/Day/Capita = 111 GPM Maximum Hour Demand @ 750 Gal/Day/Capita = 166 GPM c) REQUIRED FIRE FLOW (FF) The required fire flow is the rate of flow needed for fire fighting purposes to confine a major fire to the buildings within specific area. The determination of this flow depends upon the size , construction, occupancy, exposure of buildings within and surrounding a specified area and requirements of the local fire district . *Capita = 91 single family units x 3 . 5 people per unit = 319 . • • 1) INSURANCE SERVICES OFFICE CRITERIA The Insurance Services office minimum fire flow requirement is 500 GPM for one (1) hour or 30 ,000 gallons . However, where local conditions indicate that consideration be given to simultaneous fires , additional fire flow may he required . 2) LOCAL FIRE FLOW CRITERIA Parkland Estates is under the jurisdiction of the Longmont Fire Protection District . The Fire Chief is Mr . Don E. Marvin, 9119 County Line Road , Longmont , Colorado 80501 . The minimum storage requirements for this District is 10 ,000 gallons . d) INSURANCE SERVICES OFFICE GRADING SCHEDULE This grading schedule is a means of classifying municipal organizations with reference to their fire defenses and physical conditions . The insurance classification developed under this schedule is only one of several elements used in the development of fire insurance rates and is not intended to serve as a primary planning guide for local fire protection . The present rating for Weld County , utilizing the above criteria is between 7 and 9 , according to Longmont Fire Protection District . 3) DESIGN CALCULATIONS a) Water available from 4 wells 9 15 GPM EA = 60 GPM b) Maximum Day Storage Requirements : Maximum Day Demand = 500 Gal/Day x 319 = 111 GPM 1440 Storage Requirements = 111 GPM - 60 GPM (60 min/hr) (24 hrs/day) = 73 ,440 Gallons c) Fire Flow Requirements : 1) Minimum Insurance Services Office Requirements = 30 , 000 gallons . 2) Longmont Fire Protection District Requirements = 10 ,000 gallons . d) Total Storage Required : Maximum Day Storage + Fire Flow Storage 73 ,440 Gallons + 30 ,000 Gallons 103 ,440 Gallons 4 . RECOMMENDATIONS According to the Longmont Fire Protection District , the Parkland Estates Subdivision does not have an individual Insurance Services Office rating but is included in the overall rating of the Fire Protection District , which as previously states is between 7 and 9 . The addition of a 100,000 gallon storage tank will not degrade the overall rating of the District . Since it will provide the required fire flow for an ultimate development of 90 single family units in Parkland Estates , it should he viewed favorably by independent insurance agencies . Based upon the criteria used , we hereby certify that a 100 , 000 gallon storage tank should he installed , which should under normal circumstances be able to provide the required storage needed for fire flow plus domestic use . Prepared by ( -James W Kirk Date i Approved by G-< p/�_T R -ard5 Uoncalves , P. E. Date -V I� • HXHT13TT ''A'' .L0NGMONT FIRE PROTECTION DISTRICT 9119 COUNTY LINE ROAD LONGMONT, COLORADO 80501 • 772 - 0710 the 1 < ' .,r __ti� �� .r_- et I ()rar>,c fc :I .,J �uirLc;1iC, o.. y. ._.,1'ct LAI 1.3( , Laid ): L aes fir ,Suburhan arrl Rural , _ ..cr i It_ �•� f �, �"Ie have no ctiect.ic,r�, A public hearing was conducted on June 18 , 1980 at 2 : 00 P.M. , with the following present: BILL KIRBY CHAIRMAN LEONARD ROE PRO TEM EXCUSED NORMAN CARLSON COMMISSIONER LYDIA DUNBAR COMMISSIONER JUNE STEINMARK COMMISSIONER Also present: ACTING CLERK TO THE BOARD, Keitha White & Jeannette Ordway ASSISTANT COUNTY ATTORNEY, Thomas O. David PLANNING DEPARTMENT REPRESENTATIVE, Tom Honn PLANNING DEPARTMENT DIRECTOR, Gary Fortner The following business was transacted: I hereby certify that pursuant to a notice prepared by the County Attorney and published in the Johnstown Breeze a public hearing was held to consider an application by Parkland Associates for an amendment to the Subdivision Improvements Agreement previously entered into by and between the said Parkland Associates and Weld County. The original Subdivision Improvements Agreement provides for the installation of a 200, 000 gallon water tank. The application was a request for an amendment to said Subdivision Improvements Agreement to allow the installation of a 100, 000 gallon water tank. Tom Bonn read the Planning Staff comments regarding the amendment application. Neal F. Godwin, former Vice President Engineering of VTN, was present. VTN was the engineering consulting firm who compiled the original development criteria and determined the need for the 200, 000 gallon water storage tank. Mr. Godwin explained the formula and other related information he used to determine the size of the water storage tank needed. In summary, Mr. Godwin stated the only discrepancy between his earlier recommendation and the present one is the amount of water storage needed for fire protection. Ricaro Goncalves from PISM Consultants, Inc. , the present consulting firm for Parkland Estates, reviewed their report regarding water storage requirements. The Insurance Services Office minimum fire flow requirement is 30, 000 gallons. The Longmont Fire Protection District' s minimum storage requirement is 10, 000 gallons. PISM' s design calculations show maximum day storage 73, 440 gallons + 30, 000 gallons fire storage for a total requirement of 103, 440 gallons. Don E. Marvin, Chief of the Longmont Fire ProtectionfDhstrict testified that requirements have changed and the proposal for 100 , 000 gallons of storage for 91 houses utilizing either ISO or TIFTA standards is adequate. Chief Marvin is still concerned however, that during peak usage they might not have the water needed to fight a fire. If Parkland will place an alarm system on the storage tank and police it and themselves the needed water will be available. Chief Marvin stated that the aircraft facilities did not cause a greater water storage requirement as foam is usually used in these types of fires. Frederick L. Ginsburg, legal counsel for Parkland Associates, assured those present that Parkland's current plans do call for the installation of an alarm system on the storage tank. Mr. Honn reminded the Board that their resolution of April 23, 1980 paragraph 1 stated that Parkland must certify to the Board that any amendment to the subdivision agreement complies with all county subdivision regulations. To date said certification has not been presented. Ricaro Goncalves stated that MSM' s proposal as presented would meet all such requirements. The Board accepted this verbal certification. CONTINUED Based on the testimony presented today by Neal Godwin, Ricaro Goncalves, Fire Chief Marvin and the changes in the minimum requirements for water storage for the Longmont Fire Protection District, Commissioner Steinmark made a motion to approve the amendments to the subdivision agreement to allow for the installation of a 100, 000 gallon water storage tank in lieu of a 200, 000 gallon tank. The motion was seconded by Commissioner Dunbar and carried unanimously by the four Commissioners present. /7/1``� CHAIRMAN BOARD OF COUNTY COMMISSIONERS `y P,I,tLMitPlr�" ATTEST: WELD COUNTY CLERK AND RECORDER ERK TO TEE B BY: uty County C er TAPE 80-42 & 4? • • • A T T E N D A N C E R E C O R n APPLICANT : PARKLAND ESTATE!" TIME : IP DOCKET# DATE : JUNE 19, 1980 REQUEST : NAME /cAgeo 14,./CAttieS ADD RTE SS inS47 - `J7o Q• f/e � kl R / K � N 11 ( 7 oL,n,rY L %1L/ /( A, &i�� Z � � � I J �7ell NE �L GapW1f' 1 ?-8PdESS0 C"u$ei p� p rauc�, ?€71? 411 TZ -r gox o96 /Yro„,n?'Q7% Go%. &Gt AA/7S Sr/H/A/ 5 4747 Ail,vuc ,L 76 chines 1. El- j7 5 t 3 13e e5, f E--,e C . Sos// • NOTICE OF HEARING Pursuant to the zoning laws of the State of Colorado and the Weld County Zoning Resolution, please take notice that a public hearing will be held in the Chambers of the Board of County Commissioners of Weld County, Colorado, located on the first floor of the Weld County Centennial Center, 915 10th Street, Greeley, Colorado 80631, at 2 : 00 o 'clock p.m. on June 18 , 1980, at which time and place the Board of County Commissioners of Weld County, Colorado will consider an application by Parkland Associates for an amendment to the Subdivision Improvements Agreement previously entered into by and between the said Park- land Associates and Weld County. The original Subdivision Improvements Agreement provides for the installation of a 200, 000 gallon water tank on the subdivision in question, located in the North Half of Section 8 , Township 1 North of Range 68 West of the 6th P.M. in Weld County, Colorado. The application to be heard is a request for an amendment to said Subdivision Improvements Agreement with regard to the water system and storage requirements of said Subdivision Improvements Agreement. Please be advised that you may appear and be heard con- cerning this application at the time and place above specified. APPLICANT: Parkland Associates DATE: Wednesday, June 18, 1980 TIME: 2 : 00 o ' clock p.m. REQUEST: Amendment to Subdivision Improvements Agreement Notice prepared by the County Attorney &•his staff mailed notices to the residents of Parkland Estates. jo •• NOTICE O F HEARING Pursuant to the zoning laws of the State of Colorado and the Weld County Zoning Resolution, please take notice that a public hearing will be held in the Chambers of the Board of County Commissioners of Weld County, Colorado, located on the first floor of the Weld County Centennial Center, 915 10th Street, . Greeley, Colorado 80631, at 2 : 00 o ' clock p.m. on June 18 , 1980, at which time and pla e the Board of County Commissioners of Weld County, Colorado will consider an application by Parkland Associates for an amendment to the Subdivision Improvements Agreement previously entered into by and between the said Park- land Associates and Weld County. The original Subdivision Improvements Agreement provides for the installation of a 200, 000 gallon water tank on the subdivision in question, located in the North Half of Section 8 , Township 1 North of Range 68 West of the 6th P .M. in Weld County, Colorado. The application to be heard is a request for an amendment to said Subdivision Improvements Agreement with regard to the water system and storage requirements of said Subdivision Improvements Agreement. Please be advised that you may appear and be heard con- cerning this application at the time and place above specified. APPLICANT: Parkland Associates DATE: Wednesday, June 18, 1980 TIME: 2: 00 o ' clock p.m. REQUEST: Amendment to Subdivision Improvements Agreement PUBLIC NOTICE . NOTICE GF HEARING ____ Pursuant to the zoning laws the --- - - -__ ..... - - -- 'e State of Colorado Veld County Zoning Resolution, ... _,__ - 'lease take notice that a public .. ... ..... __- ..__ '.earmg will be held in the ........... __ ___ ____ - -- ;nambers of the Board of ..... .... ... ]ounty Commissionerslocated f jaunty,Colorado, on the - .. --'-- ..... '-'- -__--__ -- ,. :est floor of the Weld County ....Center, 10th Street.Greeley, Colorado 80631, -.......-- -, - - --- .. .. .....- -- ...- ---- ... .... :t 4:00 o'clock p.m. on June 18. - ......... - ...'. '.. .F80.at which time and place the . - ____ -- .. -- -- 3eard of County Commissioners ... .. .... - - ,t Weld County, Colorado will -" -------- - --- - - - ---.-- --'-- - ..... consider an application by - ............ nd Associates for an .. ... . . ... .. - .. .. .. provemamendment to the Subdivision ........ ... _... .... .. . .. improvements Agreement pre- ............... .. ...... .. ..... ..... _.. clously entered into by and ------- -- • between the said Parkland .. ..... .... Associates and Weld County- .. . . The original Subdivision Im- - ...... -- - o^ovements Agreement pro- ... - -- - .. -.. - -.. ':des for the installation of a .. .. .. - ,O.000 gallon water tank on the --- ubdivision in question, located ........ -- - ..... - tn the North Half of Section 8 i -.. Township 1 North of Range 68 ....- ----- - - - - - - - - .. "' - West of the 6th P.M. in weld I, County. Colorado. The applica- 1f ....... ......... ... -- ----- .......... .....-- -.. - � lion to be heard is a request for t an amendmen to said Subdlvi- h t sion Improvements Agreement with regard to the water system - and storage requirements of said Subdivision Improvements , Agreement. Please be advised that you'-b may appear and be heard concerning this application at F the time and place -above specified. -' ------ .-' APPLICANT: Parkland Associ- ates _.. . .. DATE: Wednesday, June 18, 1980 '...'..... .. TIME: 2:00 o'clock p.m. REQUEST: vv lion Improvements Agreeent to -. ment. - Published in the Johnstown Breeze Co. Legal 80-138-Atty. - it • 4,111 COUNTY Ck6MISSION6dS � L III PARKLAND ESTATES JUN L 1980 U REQUEST GREELEY, COLO. AMEND IMPROVEMENTS AGREEMENT I . On April 23, 1980 the Board of County Commissioners adopted a resolution (see attached) which defined those procedures which the Board felt necessary to process, review and evaluate proposed amendments to the Parkland Estates Subdivision Improvements Agreement. The specific amendments being considered at that point in time related to changes in the Parkland Estates Water System; specifically, to changes in the proposed water tank storage capacity. Subsequent to the adoption of this resolution the Department of Planning Services Staff received an application from the applicant, Parkland Estates, consisting of a letter from Eldon Von Ohlen, Senior V.P. of Meurer, Serafini and Meuer dated April 29, 1980 and a letter from Frederick L. Ginsberg, Esquire, dated May 6, 1980. The two letters constituting the application are attached. Upon the receipt and review of this application, it was determined by the County Staff that the application submitted did not meet the ap- plication requirements which were set forth in the Board's resolution of April 23, 1980. In order to clarify those requirements for the applicant, the Board instructed the County Engineer, Mr. Wayne Smith, to prepare a memorandum which would define more precisely the informa- tion needed to evaluate any changes in the Parkland Estates Water System. On May 6, 1980, Wayne Smith prepared a memorandum which set forth the information which needed to be submitted by the applicant in order to satisfy the Board's resolution of April 23, 1980. This memorandum was transmitted to the applicant's representatives by Mr. Tom David, County Attorney. Mr. David indicated to the Department of Planning Services Staff that the applicant would not be submitting this information immediately, and that the applicant requested that we proceed with referral of the original application submitted. On May 19, 1980, in accordance with the Board's direction, the Department of Planning Services pro- cessed the request from the applicant and sent the necessary referrals to agencies that would be involved in the review process. These agencies included: A. Weld County Health Department, Enviornmental Health Section; B. Colorado Department of Health, Water Quality Control Division; and C. Longmont Fire Protection District. Based on the responses that were received from these agencies during the review process, it can be concluded that none of the agencies in question have set forth any objections to the proposed modification of the water storage requirements in the Parkland Estates Subdivision. The responses from these agencies are attached for your review. Parkland Estates Request Amend Improvements Agreement Page 2 Finally, since the original application submitted by the applicant did not comply fully with the Board's resolution of April 23, 1980, it has been assumed by the Staff that the applicant may want to provide additional information for the Board's review during the hearing today. If this is the case it is assumed this information would cover material developed in response to the memorandum from the County Engineer's Office dated May 6, 1980. II . In addition to the information submitted by the applicant, two individuals are present at the hearing today who are prepared to provide additional information to the Board in response to issues which may be raised. First, Neal Godwin, formerly with VTN Colorado, Inc. , is available to review the original design of the Parkland Estates Water System for the Board. Second, Don Marvin, Chief of the Longmont Fire Protection District, is available to respond to any questions concerning his evaluation of the proposed change in the water system storage requirement. Ill . The resolution adopted by the Board on April 23, 1980 included a require- ment that the applicant provide certification by a registered professional engineer that the standards of the Weld County Subdivision Regulations relating to water system requirements have been met in the current pro- posal . Two sections of the resolution would seem to apply in the current case: Section 8-10- A. and Section 8-10 C. (4. ) . These sections appear to specifically be related to standards which may be affected by water storage requirements. Whether or not the current proposal (as reviewed by the Staff) complies with these sections is a question which has not been addressed in the current application. It is assumed that the ap- plicant may wish to address these standards through additional informa- tion they may want to present at the hearing today. IV. Attached to these comments are various documents which have been drawn from past submittals by Parkland Estates which relate to the original design of the Parkland Estates Water System. These items are attached for your information and review and should be established as part of the record of this hearing. Other items referenced in these comments are also attached for your reference. The attached items include: I . Resolution of Board of April 23, 1980 establishing application requirements; 2. Letter of April 29, 1980 from Eldon Von Ohlen (part of ap- plication); 3. Letter of May 6, 1980 from Frederich L. Ginsberg (application cover letter); 4. Memorandum of May 6, 1980 from Wayne Smyth, Director of Engineering with regard to application; 5. Letters of response from: a. Weld County Health Department; b. Colorado Department of Health; and c. Longmont Fire Protection District 6. Information regarding original design of Parkland Estates Water System. GZF:TEH:rjg 6. 18/80 • serve the subdivision area within a reasonable time , the Board may require the installation and capping of sani - tary sewer mains and house connections in addition to the installation of temporary individual on- lot sanitary disposal systems . An agreement with the State Health De- . partment shall be required which stipulates that the sub- divider and/or lot owner shall connect to said sewer within three ( 3 ) months after it is available . The de- sign and installation of all capped sewers , laterals and house connections must be approved by the County Health Department . Whenever individual on- lot sanitary sewage disposal systems are proposed the subdivider shall either install such facilities , or require by deed restrictions or otherwise as a condition of the sale of each lot or parcel within such subdivision that on-lot sanitary sew- age disposal facilities be installed by the purchaser of said lot at the time that the principal building is con- structed . In all other cases sanitary sewage disposal facilities shall be provided for every lot or parcel by a complete community or public sanitary system. All sew- er mains shall be installed in easements and/or dedicated rights -of-way. 9 C . Test Procedures Test procedures shall be conducted in accordance with U . S . Public Health Service Publications Number 526 , 1963 Edition , including any revisions thereto , and other County requirements . 8-10 Water Supply j Water supply systems shall be provided consistent with 4 the standards of the requirements of these regulations . A. Public Water Supply Systems 4 Where water supply is to be by a central system either through a municipality , a water district , or water com- pany or association , the subdivider must furnish evidence of adequate supply and ability to serve . If a new off- site water supply system is proposed , the subdivider prior to approval shall provide a certified letter from the State Engineer stating that proper water rights have been acquired , or a proper non-tributary source is reason- ably available for the future use of the subdivision . The central water supply system shall contain mains of d sufficient size and having a sufficient number of outlets to furnish an adequate water supply for each lot or par- cel in the subdivision and to provide adequate fire pro- tection . The minimum size of water mains shall be six - 4 '- (6 ) inches , unless specifically excepted by the Board . Fire hydrants shall be spaced no more than 1000 feet apart . All water mains shall be installed in dedicated streets , alleys , or easements . All subdivisions containing ten ( 10 ) or more lots shall be served by a public water system. B . On-site Water Systems Where the subdivider proposes that individual on- lot water supply systems be constructed within the subdivi - sion , the subdivider shall install such facilities , or shall require by deed restriction or otherwise as a con- dition of the sale of each lot within the subdivision that the facilities be installed by the purchaser of said lot at the time the principal building is construct- ed . Where individual on-lot water supply systems are proposed ' or necessary , a geologic report shall be submitted and shall contain a specific section on ground water geology prepared by a qualified ground water geologist which indicates : • ( 1 ) The probability of success of wells or on-site sup- 4 ply systems throughout the proposed subdivision . (2 ) The expected long term yield of such wells or systems . ( 3) The expected depth to usable water . (4) The expected quality of the anticipated water . 1 (5 ) Any expected significant problems of long-term supply , pollution or long-term maintenance of such wells or systems . j ( 6) The anticipated accumulative effect of such water use on other vested water rights in the area . ( 7) The report shall include such other information as required by the Planning Commission . "' C . Fire Safety Requirements All subdivisions of ten ( 10) building sites or more shall be required to provide minimum fire protection as follows : ( 1 ) Fire hydrants shall be spaced no more than 1000 feet . -46- ( 2 ) Minimum water line size shall be si•x ( 6 ) inches within all subdivisions having two ( 2 ) lots or more per acre . ( 3) Fire hydrants that have two and one- half ( 21/2) inch outlets shall have the National Standard Thread . Four and one-half ( 42) inch or six ( 6 ) inch steam- ers shall have threads known as D-522 , six ( 6 ) threads per inch . ( 4 ) Minimum residual pressure of 20 to 30 psi at the fire hydrants will be considered to provide minimum fire protection . ( 5 ) Fire hydrants shall be located on dedicated street rights -of-way and be accessible to the standard fire • pumper or as specified in an approved Planned Unit Development . 8-11 Storm Drainage and Flood Plains Drainage areas shall be left in a natural state unless approved by the Planning Commission and no encroachment shall be made on the natural channel . A plan to prevent water pollution shall be submitted and adhered to where- ever any modification of topography is required during + construction within 100 feet of any stream , irrigation ditch or drainage channel . Complete drainage systems for the entire subdivision area shall be designed by a professional engineer , licen- sed in the State of Colorado and qualified to perform 4 such work and shall be shown graphically . All existing drainage features which are to be incorporated in the de- sign shall be so identified . If the Final Plat is to be presented in sections , a general drainage plan for the entire area shall be presented with the first section and appropriate development stages for the drainage system for each section shall be indicated . Where a subdivision is traversed by a water course , drain- age way or stream , there shall be provided a perpetual drainage easement conforming substantially with the lines of such watercourse , and of such width as necessary and 1 adequate to carry off the predictable volume of storm water drainage from a twenty-five ( 25 ) year frequency storm as determined by the standard method for calcula- tions used by the Corps of Engineers . 1 i B . Design of Drainage Systems The drainage system shall be designed to consider the -47- TECHNICAL AIDS "A picture is worth a thousand words ! ! " June 17, 1980 TA06-01 !RUMP? rM'" :`?" `. Weld County �1', Board of County Commissioners B,y`_ 915 Tenth Street Greeley, Colorado 80631 d JUPu1 3 1980ti Re: Parkland Estates Water System UREELEY. COLO. Gentlemen: In accordance with our agreement dated June 12, 1980, and letter of authorization to proceed from your Mr. Gary Fortner dated June 10, 1980; we are pleased to present the following report concerning the design criteria for the above referrenced water system. The specific criteria in question being that relating to the size of the storage tank as conceived and proposed as of the formal submission of September 30, 1976 . We understand that you are interested in knowing what criteria was used; how it may have been derived, and by whom; and, my evaluation and comments on its validity. We are also aware that you are considering some proposed changes in the water system at this time, and that you are seeking this information in order that you may have the best available data upon which to base your current decisions. The following report is based on the fact that the undersigned was Vice-President, Engineering in the firm of VTN, Colorado, Inc . from approximately July 1 , 1974 to July 1 , 1977 . In that 128 Pueblo Luna, NW--Albuquerque, N . Mex . 87107--Phone 505-344-1433 • • Weld County Commission June 17, 1980 Page Two position, the undersigned was involved in the development of the criteria for, and its application to the design of the subject facilities, but has no first hand knowledge of events relating to same either before or after the above dates . However; this writer has, during the last two days , made a careful review of the complete design files of VTN Colorado, Inc . pertaining to the project . Also, we have reviewed various correspondence and other materials which were furnished to us by your Mr. Thomas Honn under letter dated May 30, 1980. Those files and materials contain documents which bear upon the subject criteria dating back to 1972 and some as recent as May, 1980. In any self contained community water system there are numerous factors and considerations which relate to the size of storage tank that may be provided in the System. However, the ones having the greatest"technical" effect on storage capacity are: 1 . Domestic Demand 2 . Available Supply 3 . Fire Protection For reasons of brevety, this report will limit its technical discussions to these three factors . As with most technical matters, there are some standard guide- lines and standard practices which are generally applied to these questions . In fact there are many such waterworks standards that have been highly documented and widely published • • Weld County Commission June 17, 1980 Page Three' by recognized authorities in the field . Those standards, how- ever, almost always provide a range of values ; whithin which the selection of a specific numerical value for application in a particular case becomes locally judgemental. Furthermore, most such standards are described for typical, idealized or generalized cases . That is, cases having well rounded and commonly encountered circumstances . Also, such standards are usually expressed with respect to communities or systems of a typical or commonly encountered size. Thus, the interpre- tation of local circumstances and influences ; and, the allowance to be made for an unusually small size of system can also become very judgemental in a case such as Parkland Estates . The following pages shows the values for each of the three above factors which different parties and reviewers thought were appropriate in the particular case of Parkland Estates . It is noteworthy that the only factor in which there is much variation is the amount of water needed for lawn watering on the lots of the subdivision. In that value it is important to remember that the 10, 000 square foot grass or lawn allowance on each lot was calculated in reverse by allocating the avail- able water to the lots . This was done by, and as explained in the letter to Weld County from Deputy State Engineer of 4-1-76 . The following values are taken directly from the project correspondence files . Weld County Commission June 17, 1980 Page Four CALCULATIONS OF DOMESTIC DEMAND VALUE SOURCE AND DATE 21 ,600 gal . per day 90 du. x 3.2 per. x 75 gpcpd . Water Resources Report by VTN 2-13-73 Letter from State Engineer 3-9-73 thought the above should be higher 28,800 gpd in house only Ray & Associates letter 3-15-73 82,080 gpd in house & lawn reviewing for Town of Erie 90 du. x 3.2 per. x 100 gpcpd. 90 du. x 3 .2 per. x 285 gpcpd . 29,440 gpd in house only Letter from VTN to Town of Erie 4-11-73 13, 800 gpd lawn only 92 du. x 3.2 per. x 100 gpcpd. 92 du. x 150 gpd per du. 22 , 080 gpd in house only 92 du. x 3 .0 per. x 80 gpcpd . 66, 908 gpd lawn only 36 .96 AF = 180 day (this report) Willard Owens report of Nov. 1973 29,440 gpd in house only 92du. x 3 . per. x 100 gpcpd . 60 Acre Feet per Year for Letter to Weld County from Deputy lawn only or 62,560 gpd State Engineer 4-1 -76 and letter to Weld County from State Engineer 5-31 -73 . Weld County Commission June 17, 1980 Page Five AVAILABLE WATER SUPPLY 96 Acre Feet per Year permited by State Engineer as explained in letter to Weld County from Deputy State Engineer 4-1 -76 59 .5 gallons per minute based on figures recited in well permits . 61 gallons per minute based upon test pump results . 1 Acre Foot = 325, 851 Gallons 1 Day - 24 Hours x 60 Minutes = 1440 Minutes THEREFORE: 96 AF x 325, 851 gal . _ 85, 703 gallons per day 365 days 59.5 gpm x 1440 min = 85,680 gallons per day 61 gpm x 1440 min - 87, 840 gallons per day HOWEVER: Willard Owens report of Oct . 1974 suggested that the wells should only be pumped about 75% of the time in order to allow the wells time for recovery of water level in the acquifer. THUS: 75% x 87,840 gpd _ 65, 880 gallons per day recoverability as explained in letter to Chief Don Marvin from VTN 12-12-75 • Weld County Commission June 17, 1980 Page Six ESTIMATES OF FIRE PROTECTION NEEDED VALUE SOURCE AND DATE 90,000 gal 750 gpm x 2 hr. letter to Town of Erie from Ray & Assoc . 3-15-73 90,000 gal 750 gpm x 2 hr. letter to Town of Erie from VTN 4-11 -73 and letter to Chief Don Marvin from VTN 12-12-75 750 gpm Letter to Weld County from Fire Marshal Joe Fuss 9-25-75 • • Weld County Commission June 17, 1980 Page Seven The standard proceedure in determining the storage capacity needed in a system such as Parkland Estates is to take peak domestic demand rate minus well production for a period during which demand will exceed production; and to that amount add the appropriate quantity for fire protection purposes . The exact origin of the value of 200, 000 gallon storage is not clearly defined in the records we have examined . However, the following points are relevant: 1 . Ray & Associates calculated the "Minimum Treated Water Storage Requirement" as 82, 080 gal . for domestic plus 90, 000 gal . for fire _ 172,080 gallons . This calcula- tion was done when they were reviewing the application dated 2-12-73, and reported in their letter to Town of Erie dated 3-15-73. 2 . Chief Don Marvin questioned the adequacy of the 200,000 gallon capacity in his review of the appli- cation for final plat approval in his letter of 11 -25-75, to Weld County. 3. The figure of 200,000 gallons for storage seems to have first appeared in "Summary Statement of Proposal for Parkland Estates" as first published in 1973 following the various agency reviews of the application dated 2-12-73. 4. VTN did in fact make an unpublished calculation of the storage requirements in 1975 . That calculation Weld County Commission June 17, 1980 Page Eight 4 . Con' t . was based upon a study of the hourly consumption rates for a peak day of domestic demand , including lawn irrigation, minus well production ' plus fire flow. The result of that calculation was a value of 153,400 gallons required storage . It included values of 63,400 gallons to handle in-house plus lawn uses and 90,000 gallons for fire protection. It was the opinion of this writer at that time that the extra, or reserve of some 47, 000 gallons was a very good investment since the cost of a 153,000 gallon tank would not be much less than that of a 200,000 gallon tank. No changes were made in the proposal as a result of discussions of this point . In fact, it was the explanation of this reserve to Chief Don Marvin which satisfied his reservations about the adequacy of of the 200, 000 gallon figure. It is important to note that the water consumption of the project is limited by the available supply. That is approx- imately 65,880 gallons per day according to Willard Owens . And, since the standard operating proceedure would be that daily uses for domestic and lawn SHOULD NOT BE ALLOWED TO "DIP" INTO THE FIRE PROTECTION STORAGE, it can be shown that no amount of storage in excess of that figure would be useful except as a reserve to be used in an emergency or breakdown. • Weld County Commission June 17, 1980 Page Nine With that understanding it can be stated that, disregarding emergency reserve, the MAXIMUM useful storage would be 155,880 gallons if the fire protection requirement is 90, 000 gallons . Ray & Associates, in their letter of 3-15-73 stated, "Discussions with the Mountain States Inspection Bureau reveal that the required fire flows for this development would be approxi- mately 750 gallons per minute for two hours" . It then appears that there was general agreement that the fire protection storage should be 90,000 gallons . At least, agreement in the judgement of the local authorities . We reiterate that the standard guidelines published for general use in designing such facilities are not readily applicable to a specific case such as Parkland Estates in that they do not express rigid values that can be used without judgemental interpretations . Moreover, the implementation of a project such as Parkland Estates rests upon the approval and santion of local officials who review the proposals and who are charged with the responsibility of exercising such judgements . Therefore, in the final analysis, the required fire protection storage is whatever amount that the local responsible authority • • Weld County Commission June 17, 1980 Page Ten says it is . If a developer wishes to exceed that value, well and good. Such as the case of the reserve included in the 200,000 gallon figure . On the other hand, if a developer wishes only to satisfy the minimum requirements as expressed by local authorities, then that also should be his perrogative . In this case, it appears after the foregoing reviews that, the design which incorporated the 200,000 gallon tank were completely valid based upon: 1 . Generally agreeing estimates of domestic and lawn needs . 2 . Documented available supply. 3 . Fire protection requirements express by local authorities . We have no knowledge indicating that there has been any change in items 1 . or 2 . above . But, if the views of what is needed for fire protection have changed, then a revised design which incorporates some other amount of storage for that purpose, may also be perfectly valid . To this writer, the most important aspect of your question would be that all parties understand what amounts of water are avail- able for what purposes so that they can make their respective decisions accordingly. Respectfully sub ' tted, Neal F. Godwin Hello