HomeMy WebLinkAbout950799.tiff A82037053
ORDINANCE NO. 9-0
IN MATTER OF THE REPEAL AND RE-ENACTMENT, WITH AMENDMENTS AND
ADDITIONS , OF CERTAIN SECTIONS , TO THE INDIVIDUAL SEWAGE DISPOSAL
SYSTEM REGULATIONS, ORDINANCE NO. 9-A, AS AMENDED BY ORDINANCE
NOS . 9-B AND 9-C
BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF WELD
COUNTY, COLORADO:
WHEREAS, the Board of County Commissioners of Weld County,
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 has the power and
o coo authority under the Weld County Home Rule Charter under Article
p 10 , Title 25 , CRS , to adopt individual sewage disposal system
o regulations for all areas of the County of Weld, and
WHEREAS, the Board of County Commissioners of Weld County,
0 3 Colorado, has previously adopted Ordinance No. 9 , with subsequent
ocz re-enactments and amendments, the Weld County Individual Sewage
Disposal System Regulations , establishing a comprehensive set of
a rules and regulations pertaining to individual sewage disposal
osystems, and
o a WHEREAS, the Colorado Department of Health guidelines for
N individual sewage disposal system regulations have undergone
a certain changes since passage of Weld County Ordinance No. 9-C,
a and, the Colorado Department of Health, Planning and Standards
mu Section, Water Quality Control Division, is currently reviewing
1/4O z these amendments to determine compliance with the current
w guidelines, and
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WHEREAS, the Weld County Board of Health will review this
w matter on November 26 , 1985 , to provide recommendations to this
uuiiw Board prior to the second reading of this Ordinance, and
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M z WHEREAS, this Board finds and determines that the adoption of
eo., � the amendments , deletions and additions to the Individual Sewage
o Disposal System Regulations is in the best interest of the health,
safety, and welfare of the citizens of the County of Weld.Cri NOW, THEREFORE, BE IT ORDAINED by the Board of County
oCommissioners of Weld County, Colorado, that the following
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r, provisions of the Weld County Individual Sewage Disposal System
PI w Regulations, Weld County Ordinance 9-A, as amended by Weld County
Ordinance 9-B and 9-C, be repealed and re-enacted, with
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Page 2
RE: ORDINANCE NO. 9-D
amendments , repealed or added as shown in "Attachment A" , a copy
of which is attached hereto and incorporated herein by reference.
If any section, subsection, paragraph, sentence, clause or
phrase of this Ordinance is for any reason held or decided to be
invalid or unconstitutional, such decision shall not affect the
validity of the remaining portion. The Board of County
Commissioners hereby declares that it would have passed the
Ordinance, and each and every section, subsection, paragraph,
sentence, clause and phrase thereof irrespective of the fact that
any one or more section, subsection, paragraph, sentence, clause,
clause and phrase might be declared to be unconstitutional and
coo invalid.
This Ordinance shall become effective January 1 , 1986.
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The above and foregoing Ordinance No. 9-D was, on motion duly
w made and seconded, adopted by the following vote on the 23rd day
o
o 3 of December, A.D. , 1985 .
roirw BOARD OF COUNTY COMMISSIONERS
ATTEST: % WELD COUNTY, O ORA
Weld nt.Couy C rk' and Recorder
o ;41 and CJLerk to the Board acqu ne Jo son, Chairman
cq p4 1 V . EXCUSED
Ln v BY: Di krsXJ erk Gene R. Brantner, Pro-Tem
/ , l /y /N H APPROVED AS TO FORM: C.W. irby
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N Cll EXCUSED
en
Go71p. E. La
w - County Attorney
M z Fran Yam
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tX First Reading: November 25 , 1985
x Published: November 28 , 1985 , in the Johnstown Breeze
m ul Second Reading: December 9 , 1985
r•A Published: December 12 , 1985 , in the Johnstown Breeze
MI w Final Reading: December 23 , 1985
Published: December 26 , 1985 , in the Johnstown Breeze
Effective Date - January 1 , 1986
ATTACHMENT A
SECTION II is repealed and re-enacted to read as follows:
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q SECTION II: DEFINITIONS: The following definitions shall apply in the
o W interpretation and enforcement of this Regulation. The word
03 "shall" as used herein indicates a mandatory requirement.
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• 2. 1 Absorption System: a leaching field and adjacent soils or other system
for the treatment of sewage in an individual sewage disposal system by
Wmeans of absorption into the ground.
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0 2.2 Absorption Trench: one or more trenches not over three (3) feet in width
N and of varying length and depth in which sewage effluent is percolated
a into the soil.
co• U 2.3 Acceptable Design: a standardized design of tank, plant or system, the
installation of which is permitted by the Department, provided that site
H requirements aremet.
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r' a 2.4 Aeration Plant: equipment or devices for the aerobic treatment of
w sewage.
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r-- 2.5 Aerobic Sewage Treatment System: an individual sewage disposal system
0 employing biological action which is maintained by the addition of air or
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N $1 oxygen.
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W Z 2.6 Analytical Parameters:
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A. Temperature (T) : The measure of the thermal state of substance
with respect to its ability to communicate heat to its environment
reported as degrees Centigrade (C) .
B. Suspended Solids (SS) : solids in the sewage that can be removed
readily by standard filtering procedures in a laboratory reported as
milligrams per liter (mg/1) .
C. Volatile Suspended Solids (VSS) : the quantity of solids in sewage
which are lost on ignition of the dry suspended solids at 600°C.
reported as percent of total suspended solids.
D. Settleable Solids: solids in the sewage which will settle, as
distinct from remaining in suspension reported as milliliters per
liter of sample after 30 minutes of settling time (ml. 30 min.) .
E. the logarithm of the reciprocal of the hydrogen ion
concentration.
°,�° OU F. Dissolved Oxygen (DO) : the oxygen dissolved in sewage reported as
milligrams per liter (mg/1) .
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U G. Chemical Oxygen Demand: is the measure of the oxygen equivalent of
athat portion of organic matter that can be oxidized by a strong
o W chemical oxidizing agent and reported as milligrams per liter
(mg/1) .
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tn- A H. Five Day Biochemical Oxygen Demand (BOD ) : the quantity of oxygen
O used in the biochemical oxidation of organic matter in five days at
20° C under specified conditions reported as milligrams per liter
Ln a (mg/1) .
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N 2.7 Applicant: any person who submits an application for a permit for an
individual sewage disposal system.
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m U 2.8 Approved: official consent given in writing by the Department.
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[j 2.9 Bedrock: the more or less solid undisturbed rock in place either at the
E surface or beneath surficial deposits of gravel, sand, or soil or a
consolidated rock formation of impervious material which may exhibit
m0 jointed, fractured, or deteriorated characteristics.
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w 2. 10 Board of Health: the Board of Health as designated by the Board of
2 County Commissioners of Weld County, Colorado.
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a 2. 11 Building Sewer: that part of the piping of a drainage system which
extends from the end of the building drain and which receives the
adischarge of the building drain and conveys it to a public sewer, private
ono sewer, individual sewage disposal system or other point of disposal.
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2. 12 Cesspool: a covered underground receptacle which receives untreated
W [L sewage from a building and permits the untreated sewage to seep into
surrounding soil.
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2. 13 Cistern: a water—tight covered receptacle of non—toxic materials which
is designed for storage of potable water.
2. 14 Competent Technician: an employee of the Department who is able to
conduct and interpret the results of a site evaluation.
2. 15 Component Parts: all physical, mechanical and electrical components of
an aeration plant.
2. 16 Composting Toilet: a unit which consists of a toilet seat and cover over
a riser which connects to a compartment or vault that contains or will
receive composting materials sufficient to reduce waste by aerobic
decomposition.
2. 17 Contact Basin: a water tight receptacle used for the retention of
effluent for a specified length of time so that required biological or
chemical action can occur.
2. 18 Department: the Weld County Health Department
2. 19 Dispersal System: a system for the disposal of effluent, after final
m o treatment in an individual sewage disposal system, by a method which does
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not depend upon or utilize the treatment capacity of the soil.
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2.20 Distribution Box: a water-tight chamber below the outlet level of a
septic tank or treatment unit and from which effluent enters the
absorption system.
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o a 2.21 Division: the Division of Health Protection Services, Weld County Health
ch W Department.
0 2.22 Dosing Tank: a tank which provides for a high rate, periodic discharge
in a of effluent.
2.23 Effluent: the liquid waste discharge from an individual sewage disposal
x system.
m4 2.24 Environmental Health Specialist: a person who is trained in physical,
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biological and sanitary science to carry out inspectional and educational
ko Z duties in the field of environmental health.
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Hi m 2.25 Evapotranspiration System: a type of dispersal system that wholly or
primarily utilizes liquid evaporation or transpiration by vegetation as a
e O means of effluent disposal.
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2.26 Experimental System: a new device or design in which further testing is
M o required in order to provide sufficient information before acceptance.
o 2.27 Food Chain Crop: those crops grown for table use which includes onions,
N potatoes, and salad vegetables. This does not include wheat, corn,
barley, or other grains.
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CD N 2.28 Geologist: a Professional Geologist as defined in 6-5-102, CRS 1973.
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2.29 Groundwater Table: the upper surface of ground water in the zone of
saturation of a geologic formation.
2.30 Health Officer: the chief administrative and executive officer of Weld
County Health Department or other representative as designated by the
Board of Health or Board of County Commissioners of Weld County.
2.31 Holding Tank: a water—tight receptacle for the retention of sewage
either before, during or after treatment.
2.32 Individual Sewage Disposal System and the terms "System" and "I.S.D.S.":
a system or facility for treating, neutralizing, stabilizing or disposing
of sewage which is not a part of or connected to a sewage treatment
works.
2.33 Lift Station: a device used for the vertical lifting of effluent to the
required horizontal level of either the absorption field or septic tank.
w 2.34 Limiting Zone: any soil horizon in the soil profile or underlying strata
U which prevents the soil from acting as an effective filter of organisms
and suspended solids from effluent, and shall include seasonal and
perched water tables, determined by direct observation or by observation
of salts, chemically reduced iron expressed as mottling or gleying;
o w bedrock with impermeable, slowly permeable, or fractured strata; and
0 3 excessively coarse sands and/or gravels.
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m w 2.35 Liner: a water—tight membrane liner of at least 0.01 meter (10
millimeters) thickness which is used to prevent effluent from entering
0 the soil or groundwater table. Material shall be polyvinyl chloride or
material of equal integrity.
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.. w 2.36 Manufacturer: the person or firm that constructs or assembles individual
rt x sewage treatment system components.Lrla 2.37 Matrix: the material in which effluent is dispersed for percolation or
capillary action.
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C11 2.38 Mini-System: a system designed to accommodate wastes only from sinks,
Hi m lavatories, tubs, showers or laundries.
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M D 2.39 Owner: the person who is owner of record for the land on which an
o w individual sewage disposal system is to be designed, constructed,
installed, altered, extended or used.
o 2.40 Percolation Test: a subsurface soil test at the depth of a proposed
U a absorption system or similar component of an individual sewage disposal
asystem to determine the permeability of the soil, the results of which
are normally expressed as the length of time in which one inch of water
VD CO is absorbed.
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2.41 Permeability: the
e property of a material which permits movement of water
go w through the material.
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2.42 Permit: a permit for the construction or alteration, installation and
use or for the repair of an individual sewage disposal system.
2.43 Person: individual, partnership, firm, corporation, association or
other legal entity and also the state, any political subdivision thereof
or other governmental entity.
2.44 Plot Plan: an accurate drawing or map indicating the dimensions,
acreage, and location of property lines, buildings, wells, individual
sewage disposal systems, water courses, geographical features and other
pertinent information as required.
2.45 Privy: a 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 animals.
2.46 Registered Professional Engineer: an engineer licensed in accordance
with 12-25-11 CRS.
2.47 Sand Filter: a subsurface system which utilizes filtration or absorption
Uor both, which contains an intermediate layer of sand as filter material.
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• O 2.48 Seepage Bed: a type of soil absorption system dependent upon suitable
o soil at a depth greater than that of an absorption trench or bed. and
adesigned on the basis of sidewall area.
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o 2.49 Seepage Pit: a type of soil absorption system dependent upon suitable
o W soil at a depth greater than that of an absorption trench or bed, and
designed on the basis of a sidewall area.
O• 2.50 Se tae: the liquid and solid contents of aprimary facility.
Septage: q treatment
0 2.51 Septic Tank: a water-tight, accessible, covered receptacle designed and
constructed to receive sewage from a building sewer, to settle solids
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from the liquid, to digest organic matter and store digested solids
athrough a period of retention and allow the clarified liquids to
o U discharge to other treatment units for final disposal.
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N H 2.52 Serial Distribution: an arrangement of absorption trenches, seepage pits
N F or seepage beds so that effluent is retained in each successive component
' a before flowing into the succeeding component.
,M W 2.53 Sewage: a combination of liquid wastes which may include chemicals,
o W house wastes, human excreta, animal or vegetable matter in suspension or
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Z solution, and other solids in suspension or solution, and which is
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N itt discharged from a dwelling, building or other establishment.
rV W 2.54 Sewage Treatment Works: a system or facility for treating, neutralizing,
Cx stabilizing of sewage, which system or facility has a design capacity to
receive more than 2,000 gallons of sewage per day, the disposal of which
al in is by means other than a subsurface absorption system. The term "sewage
1 treatment works" includes appurtenances such as interceptors, collection
Ga lines, outfall and outlet sewers, pumping stations, and related
equipment.
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2.55 Site Evaluation: the testing of soils and examination of the location of
a proposed I.S.D.S. to determine the presence of, and limitations imposed
by, the field percolation rate, limiting zone(s) , slope, and pertinent
ground features; as performed by a competent technician or registered
professional engineer.
2.56 Soil Horizon: a distinct layer of soil, gravel, cobbles, or bedrock,
separately or in combination, approximately parallel to the soil surface
with characteristics produced by soil—forming or geologic processes.
2.57 Soil Profile: the collection of all soil horizons and bedrock, from the
surface of the ground to a depth of eight (8) feet or to bedrock,
whichever is less, as exposed in a test pit or boring log.
2.58 Stabilization Pond: a reservoir or diked land which receives aeration
plant effluent for final treatment or evaporation.
2.59 State Waters: any and all surface and subsurface waters which are
contained in or flow in or through this state, except waters in sewage
systems, waters in treatment works of disposal systems, waters in potable
O water distribution systems and all waters withdrawn for use, until all
r+ U uses and treatment have been completed.
m U 2.60 Suitable Soil: a soil which will effectively filter effluent by removal
of organisms and suspended solids before the effluent reaches any highly
W permeable earth such as joints in bedrock, gravels or very coarse soils
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O W and which meets percolation test requirements and has a vertical
o a thickness of at least four feet beneath the bottom of the proposed
absorption trench or bed.
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0 2.61 Systems Cleaner: a person engaged in and who holds himself out as a
specialist in the cleaning and pumping of sewage disposal systems and
o a removal of the residues deposited in the operation thereof.
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2.62 Systems Contractor: a person engaged in and who holds himself out as a
specialist in the installation, renovation, and repair of sewage disposal
N a systems.
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1/4O z 2.63 Uniformity Coefficient: the quotient of the grain size that is 40%
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coarser by weight than itself divided by the grain size which is 90%
tv E coarser (effective size) by weight than itself.
m2.64
2.64 Vault: a water—tight, covered receptacle which is designed to receive
ow and store sewage and is accessible for the periodic removal of its
z contents.
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2.65 Wastewater Pond: a designed pond which receives exclusively wastewater
C) ::4 from a first stage treatment unit and which provides an additional degree
WW of treatment.
W 2.66 Water Quality Control Commission: the Commission created by 25-8-201,
o in CRS.
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SECTION 3.3 A(10) is amended to read as follows:
10. Street or road address of the property.
SECTION 3.3 B is repealed and re—enacted to read as follows:
B. The maximum portion of the lot or building site that can be used for
I.S.D.S. shall be twenty-five (25) percent unless a waiver has been
obtained and approved by the Board of Health for experimental or
water conservation methods.
SECTION 3.3 C(4) is repealed and re—enacted to read as follows:
4. Any addition to a structure which will or is likely to result in
increased sewage flow to an existing system shall require approval
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I—I U by the Department and may require expansion of the individual sewage
disposal system or parts thereof.
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C.) SECTION 3.4 D is repealed and re-enacted to read as follows:
o 3 D. The determination of the suitability of the site and of the proposed
design based upon the land use and population density in the area;
o a the use to which the property is to be put; the size of the lot;
qdepth verification of the ground water table; suitable soil;
olimiting zone(s); and depth to bedrock; the location of the disposal
Wsystem with reference to wells, streams, lake, ditches, structures,
In a and other geographical features.
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x SECTION 3. 10 is repealed and re-enacted to read as follows:
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wo z 3. 10 If upon final inspection of the system, the Health Officer finds it
N installed in accordance with these regulations and the� w g permit, the Health
el Officer shall issue final approval for the completed system. If the
system has been designed by or constructed under the supervision of a
m Registered Professional Engineer, the Department shall require that said
wengineer shall at this time certify, in writing to the Department, that
construction and installation of the system has been completed in
accordance with the terms of the permit and this regulation. If the
No inspection discloses any significant departure from the description or
design of the system as stated in the application and permit, or if any
V i G aspect of the system fails to comply with this regulation, approval shall
a be withheld. Written notice of deficiencies causing the disapproval
r shall be given the Systems Contractor. Another inspection shall be made
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0 upon notification from the Systems Contractor that the deficiencies have
been corrected and the system brought into compliance with this
W w regulation.
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SECTION 3. 17 C is repealed and re—enacted to read as follows:
C. No individual sewage disposal system presently in use which does not
comply with the provisions of this regulation regarding minimum
separation between limiting zone(s) and the bottom of an absorption
system shall be permitted to remain in use without compliance with
this regulation.
SECTION 3.22 is repealed and re-enacted to read as follows:
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o O 3.22 Regulations of Systems Cleaners:
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q A. No person shall engage in the cleaning of sewage disposal systems or
o W the transportation of septage to a disposal site unless he holds a
o 3 valid Systems Cleaner License. Employees of a validly licensed
o a Systems Cleaner shall not be required to be licensed. The initial
44I-41 fee for a Systems Cleaner License shall be as set by separate
ordinance by the Board of Weld County Commissioners. Licenses shall
expire on December 31 of each year and an annual renewal fee, as set
a by separate ordinance by the Board of Weld County Commissioners,
o shall be charged. A license which lapses because of failure to
renew or is revoked shall be subject to the fee established for new
license upon reapplication.
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co B. Standard of Performance for Systems Cleaners
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N H 1. A license holder, when cleaning a septic tank or aeration
ro E plant, shall remove the liquid, solids, and scum, leaving no
'-' more than three (3) inches depth of septage in a
non-backflowing septic tank or aeration plant. In backflowing
W types of systems cleaning shall be effective in reducing solids
ow and scum to the point of a near new system.
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2. A license holder shall maintain his equipment so as to insure
that no spillage of septage will occur during transportation,
o M a and that his employees are not subjected to undue health
hazards.
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CT 3. A licensed holder shall dispose of the collected septage only
eo 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 the site designated and recommended by the
Board of Health and approved by the Weld County Board of
Commissioners.
c. By land application if applied in compliance with all of
the following requirements.
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1. The licensed systems cleaner must make arrangements
with the land owner to insure that all septage is
incorporated into the soil by plowing or disking
within twelve (12) hours of the time of application.
2. The licensed systems cleaner must make arrangements
with the land owner or farm manager to insure that
food chain crops shall not be grown within eighteen
(18) months of the last application of septage.
3. Land application and subsequent tillage shall not
conflict with regulations regarding the plowing of
fragile grasslands.
4. Site requirements for land application.
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a. Surface slope shall be 0 to 8 percent.
OU b. Septage shall not be applied in drainage areas
within one mile upstream of direct diversion of
W surface water for public water supplies.
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o rx c. Septage shall not be applied within 200 feet of
vs w surface water or an existing stream bed
including perennial or intermittent streams.
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W d. Septage shall not be applied within 100 feet of
o a a domestic water supply well.
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H x e. Protection of groundwater - the seasonal high
ground water table shall not be within five (5)
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feet of the surface of the land.
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N H 5. The licensed systems cleaner shall provide the
Department a list of the legal descriptions of all
-i a land application sites utilized for disposal. This
shall be provided monthly.
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o [*.i 4. Prior to the issuance of or renewal of a license, the Health
z Officer may require the applicant to demonstrate adequate
o knowlege of 3.22 A, B, C.
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C. Revocation of a Systems Cleaners License
• M 1. The procedures as described in 3.21 (C) shall be followed for
o LU the revocation of a license.
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B 1096 REC 02037053 12/26/85 12: 05 $0. 00 12/018
F 1564 MARY ANN FEUERSTEIN CLERK & RECORDER WELD CO, CO
TABLE II
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Table of Minimum Horizontal Distances in Feet Between hJ H
Components of a Sewage Disposal System and Pertinent Ground Features O
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m 'm m il b o r h C < r' c rt it 'O W Cn N rn
t c n Y a Y O m Y. n M 'C P. J V N P- m 0 [T rT
n. 0 V 0 0 J W p •- Y n v v a. m O
✓ O rt << a r m a s s r a e- J n C - < O C m H
a c n 4 a. a a iI a o O n `C n ❑ n vi
r, a a 0 0 V 3 a me• ni • WV a 0 0 C a m m • m a o n n ft n V.
r O H n a < e- c < n H J
se a c n se a to n 0 3 ✓• O e- a o tli DI tr;
1 Y 0 h' N m m rt 'p ry e- 0 w. 0
a - Wl T' rt rr i c Sc o J cn tr v fD
C m m
m 0 a
n n ✓ n 0 C H ,-. ✓ rt ty n
.t m ss ` n e' n n v
n n m 6 .- n n n ^ /D m
e•H e- O n s' O rr m rr a s C at
re m v NP.V a N V S '0 Inc n n a n E M
q n c n n . W rn n s et
a tt a tt m * el * n as
n et CO ft —
3 r ✓ n o n ' o a s C cD
m a Oct Oct r C n 0 a w 0.
0O 0 0 0 s n '. C 0 • no Sl n N
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a H� 0.
1-a Springs,Wells or Suction Lines 50 I 50 I SO I 60 60 100 I 100 100 0- 0 n
Potable Water Supply Lines 10 10 10 10 10 25 25 25 G mm
Cistern 25 25 25 I 25 25 25 I 25 25 CI ❑ ID
Dwelling or Occupied Building 0 I 5a 15 I 15 15 15 I 15 20 to r n
N
Property Lines 0 I 106 110 I 10 10 10 I 10 10 V n
Subsoil Drains I 10c1 1Oc 10 I 10 10 25 25 _ 25 n 0rt
Lakes and Ponds 5001 50c 25 I 25f 25f 25 25 I 100 I N en o.
Intermittent Streams(d),Streams n
or Water Courses,Irrigation w 9 . o
Ditch (f) (q) 50c1 50c 25 I 100E 100f 100 100 100h ry to on
Swale or Gully (e) I 1Oc1 1Oc 10 I 10 10 15 15 25 I Cl. E tD
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Note: The minimum distances shown above shall be maintained between the •. Swale or Cully t• a narrow ravine or shallow depression which carries Q q ro elates components and the ground featurrs described. Where geologies' or water afterperiod ofO
tam g a precipitation tl om to square
snow runoff and ham limited fD 9 e.
ocher conditions warrant. greeter distances may be required, water sources and • dr•1n•ge basin of one square mile or less. 0 H
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iv f. The Department may allow a lesser distance for fully lined systems In • wP+ E
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r. Components which are est wa
tertight sow ld not amend into anticipated Instances whore the flood zone is not • !actor for consideration. ..
root system or nearby tree. Dlab nee shown shall not apply to treatment N
plant. g. The Department say allow lesser distances which meet Stets guidelines 1/44
where irrigation ditch laterals not serving as public water sources and where CO
b. Diecmnce shown shall not apply where effluent discharge Is not required to such 1 distances would not cause pollution or be detrimental to the rT
be contained on the premises of orl in. MS septic system.em. _ 9
c. Crossings may be permitted where online. are constructed of sufficient h. Add eight (8) feet additional distance for each 100 gpd of design flow
strength to contain flews under procure-. o a
ver 1600 gpd. O
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1. Waterway or strum is defined as a feature which drains • watershed
greeter than one square elle.
SECTION 4.3 D is repealed and re—enacted to read as follows:
D. Calculation
The field percolation rate shall be the average rate of the
percolation tests after a majority of the percolation test holes
exhibit two consecutive identical measurements. A rate faster than
five minutes per inch or a rate slower than 60 minutes per inch
shall render the location unsuitable for an absorption system.
However, with percolation rates faster than five minutes per inch in
sandy soils, the percolation rate may be slowed by soil replacement
meeting the requirement of 5.4 C4. . The field percolation rate
shall be used in calculating the absorption area required for the
proposed system.
Sites with unsuitable percolation rates shall necessitate additional
soil evaluation and design by a Registered Professional Engineer if
co O any absorption area is to be proposed. In no event shall the
0 calculated absorption area be less than that area required for
M systems with percolation rate of five minutes per inch.
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0 3 SECTION 4.4 is repealed and re—enacted to read as follows:
c) a Soil Profile: A test pit or trench for the examination of the soil
ur W profile must be depth g
AW provided to a of eight (8) feet or to bedrock,
O whichever is less, to determine conformance with 4.6 of these
Wregulations.
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A. The test pit shall have minimum horizontal dimensions of three (3)
N feet in width and six (6) feet in length.
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B. To allow entry and exit, at least one wall of the test pit shall
0o U have a maximum slope of forty-five (45) degrees from horizontal, or
VD Z a ladder must be provided.
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N E SECTION 4.6 is repealed and re-enacted to read as follows:
• m
a
M A Suitable Soil Shall Meet the Following Criteria:
u W
A. A minimum depth of four (4) feet between the bottom of the proposed
o z absorption field and any limiting zone(s) .
y
B. Has the capacity to adequately disperse the designed effluent
U a loading as determined by a field percolation rate of between five
(5) minutes per inch and 60 minutes per inch or by other approved
VD L11
soil tests.
O1 1/40
C. Acts as an effective filter within its depth for the removal of
pathogenic organisms.
11
SECTION 5. 2 B is repealed and re-enacted to read as follows:
B. The building sewer to septic tank shall be laid with a minimum fall
of one-eight (1/8) inch per foot (Z inch fall per foot is
recommended) . Bends in the building sewer shall be limited to
forty-five (45) degree ells, or long-sweep quarter bend. The
building sewer installation shall meet all of the requirements of
the Colorado Technical Plumbing Code, 1972 Revised, or such local
Code as may be in force. The inlet and outlet pipes shall be
grouted and sealed with waterproof materials.
SECTION 5.2 C is repealed and re—enacted to read as follows:
C. Backfilling around a septic tank shall be accomplished in a manner
to prevent settlement and avoid undue strain on the tank and the
pipes entering and leaving the tank. Cast—iron pipe or a minimum of
ASTM Standard 3034, PVC SDR 35, or Schedule 40 PVC shall be used for
co 0 the building sewer and for the septic tank to the head of the
o U leachfield and shall be laid with a minimum fall of one—eighth (1/8)
inch per foot.
O
� U
A SECTION 5.4 B(2) is repealed and re-enacted to read as follows:
0
0 3 2. Where the ground slope is in excess of 25% in the area of the
o• proposed absorption system.
in- CA
• SECTION 5.4 C(5 & 6) are amended to read as follows:
0
ut a 5. The bottom of the trench or bed and distribution lines shall be
o level.
6. The absorption field area shall be protected as to prevent vehicular
and livestock traffic.
L11C0
U SECTION 5.4 D(5) is repealed and re—enacted to read as follows:
k.oz
N H
5. Outlet lines from the distribution box to the laterals shall be of
E
solid wall pipe for a minimum of five (5) feet.
m D• SECTION 5.4 G is amended to read as follows:
W
O o 54
M Z G. The minimum horizontal distance required from cut banks and fill
Z areas to I.S.D.S. components discharging effluent into or onto the
N
surrounding soil shall be four (4) times the height of the bank,
U a measured from the top edge of the bank (See diagram) .
1O --- ... -4h —41
O11O --
ir
O LO
W ./11Start trench/bed
12
SECTION 5.5 A is repealed and re-enacted to read as follows:
5.5 Absorption Trenches
A. At least two trenches of near equal length shall be constructed with
a length not exceeding 100 feet; a width not exceeding three (3)
feet; and a depth not exceeding three (3) feet to the bottom of the
excavated trench from ground level existing at the Site Evaluation.
Only one trench will be required if the system required total area
does not exceed 200 square feet. There shall be a minimum
(horizontal measurement) of six (6) feet of undisturbed earth
m O between adjacent trenches. Any dimensional change from these
c0 specifications require approval from the Health Officer. A disposal
line shall be provided for each trench and shall be surrounded by
el C..) clean, washed, graded gravel or rock or similar aggregate. The
Q material may range in size from three-fourths (3/4) inch to two and
o w a half (21) inches. The material shall extend from at least two (2)
o 3 inches above the top of the pipe, level across the trench, to at
o a least six (6) inches below the bottom of the pipe. The top of the
co. W gravel shall be covered with untreated building paper, a two (2)
o inch layer of hay or straw, or a similar pervious material to
u prevent the gravel from becoming clogged by the earth backfill. An
N W impervious covering shall not be used, as this interferes with
44
o evapotranspiration at the surface. There shall be at least twelve
iv Qs (12) inches of backfill placed over the trench which shall be graded
x to promote runoff water from the disposal area. No trees or shrubs
W shall be placed closer than six (6) feet to the trench. The bottom
oo u of the trench shall be excavated level. Four (4) foot depth of
suitable soil below the bottom of the trench is required. Machine
La Z
Osle W tamping, rolling or hydraulic compaction of final cover shall not be
CVEl
W permitted, however, hand tamping may be allowed where necessary to
el W stabilize the soil to prevent erosion or the intrusion of extraneous
W water. A distribution box shall be included in the absorption
W
,`n a
trench system, and shall meet requirements of subsection 5.4 D.
o w Trenches shall follow the ground contour surface so that variations
n
o z in trench depth shall be minimized.
N Ft
o B. Perforated plastic distribution lines of three (3) or four (4)
W
% inches diameter shall be fitted with tight joints and the
x perforations shall be laid such that an even distribution of effluent
over the trench system will occur. (Note: each perforated pipe
al segment shall be so placed that effluent will be equally dispersed
o ul downward into thegravel from each row ofperforations g el per segment) .
W N
13
SECTION 5.6 A is repealed and re—enacted to read as follows:
5.6 Seepage Beds
A. Seepage beds shall be constructed with a length not exceeding 100
feet, a width greater than three (3) feet and depth not exceeding
three (3) feet to the bottom of the excavated bed from ground level
existing at the Site Evaluation. Any dimensional change from these
specifications requires approval from the Health Officer. A twelve
(12) inch layer of three—fourths (3/4) to two and a half (2' ) inch
clean, washed, graded gravel, rock or other similar material shall
be distributed evenly and level over the entire bed, with
distribution lines set at a depth to insure at least six (6) inches
co 0
of gravel below and two (2) inches of gravel above each line. A
cover of untreated building paper, a two (2) inch layer of straw, or
wO a similar pervious material shall be placed on top of the gravel.
O
After final inspection, backfill shall be placed over the bed to
minimum depth of twelve (12) inches. The final cover shall be
o graded to promote drainage runoff away from the disposal area. In
the case of an above ground system, such as a mounded system, an
o rx impervious berm shall be constructed to prevent lateral flow of
m waste discharge outside of the absorption field. No trees or shrubs
p shall be placed closer than six (6) feet from the system. A four
(4) foot depth of suitable soil below the bottom of the bed is
�n a required. Machine tamping, rolling or hydraulic compaction of final
b cover shall not be permitted. However, hand tamping may be allowed
where necessary to stabilize the soil to prevent erosion or the
!.x intrusion of extraneous water.
coa
coo
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N E
M W SECTION 6.4 C is repealed and re—enacted to read as follows:
o G,
n C. The matrix shall be installed with care so that the liner is not
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perforated. Heavy machinery. shall not be permitted to drive over
the matrix or the liner. The surface of the matrix shall be convex
0W so as to permit run-off of rainwater and to increase the air
WW turbulence over it. The surface of the matrix shall be provided
with sod, or with grass cover, or with any other plants specified by
w co the designer and shall be maintained as designed. The bed area
o VD
shall be protected as to prevent vehicular, pedestrian, and
livestock travel.
CIN
14
SECTION 7.2 is amended to include the following as the last sentence in the
paragraph.
Metal or coated metal vaults are prohibited.
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AFFIDAVIT OF PUBLICATION
a THE JOHNSTOWN BREEZE
STATE OF COLORADO
ss
COUNTY OF WELD
1, Clyde Briggs, du solemnly swear that I
am publisher of The Johnstown IlreeLe
that the same is a weekly newspaper
printed, in whole or in part, and published
in the County of Weld, State of Colorado.
and has a general circulation therein; that
said newspaper has been published
continuously and uninterruptedly in said
County of Weld for a period of more than
fifty-two consecutive weeks prior to the
first publication of the annexed legal wimp
• or advertisement; that said newspaper has
been admitted to the United States mails as
second-class matter under the provisions of
the Act of March :1, 1979, or ano
amendments thereof, and that said
newspaper is a weekly newspaper duly
qualified for publishing legal notices and
advertisements within the meaning of the
laws of the State of Colorado.
That the annexed legal notice or advertise-
ment was published in the regular and
entire issue of every number of said weekly
newspaper for the period of I consecu-
tive insertions; and that the first
publication of said notice was in the iss.w,ol_
said newspaper dated /2/i 2. A U. b'S
and that the last publication of said notice
was in the issue of said newspaper dated
A.D. 19
In witness whereof I have he runty set
my hand,this /v day of /�eC-
A.D. nigg
71'ublisher
Subscribed and sworn to before me, a
Notary Public in and for the County of
Weld Slate of Colorado, this ./ day of
A.,e[c,..A.1). 19.cal—...
Gieferj .Gf /�cLZr
Notary PuLllc
My comp -4,R 0,rp
2 touts P_rsh ! ,
10 — oreeiea
- ORDINANCE NO. fl-D IN SECTIONS TO
F THE THE INDIVIDUAAL SEWD RE-ENACTMENT,
GE D SPOSAL SYSTEM REGULATIONNDMENTS S,ORDINANCE NO.9-A,AS
AMENDED BY ORDINANCE NOS. 9-8 AND 9-C
BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF WELD COUNTY, COLORADO: •
WHEREAS,the Board of County Commissioners of Weld County,Colorado,pursuant to Colorado statute
and the Yield County Home Rule Charter, is vested with the authority of administering the affairs of Weld
County, Colorado, and
WHEREAS- the Board of County Commissioners hes the power end authority under the Weld County•
Home Rule.Charter under-Article 10,Title 25,CRS,to adopt individual sewage disposal system regulations
for all areas of the County of Weld, and
•
WHEREAS, the Board of County Commissioners of Weld County, Colorado, has previously adopted
Ordinance No. 9, with subsequent re-enactments and amendments, the Weld County individual Sewage
Disposal System Regulations, establishing a comprehensive set of rules and regulations pertaining to
individual sewage disposal system% and
WHEREAS, the Colorado Department of Health guidelines for Individual sewage disposal system
regulations have undergone certain changes since passage of Weld County Ordinance No. 9-C, and,-the
Colorado Department of Health,Planning and Standards Section,Water Quality Control Division,Is currently
reviewing these amendments to determine compilence with the current guidelines, and
WHEREAS, the Weld County Board of Health will review this matter on November 28, 1985, to provide
recommendations to this Board prior to the second reading of this Ordinance, and
•
WHEREAS,this;Board finds and determines that the adoption of the amendment%4 deletions and additions
to the Individual Sewage'Disposal System Regulations is in the best interest of the health, safety, and
welfare of the citizens of the County of Weld.
NOW,THEREF-DRE,BE IT ORDAINED by the Board of County Commissioners of Weld County,Colorado,
that the following provisions of the Weld County Individual Sewage Disposal System Regulations, Weld
County Ordinance 9-A, as amended by'Weld County Ordinance 9-B and 9-C, be repealed and re-enacted.
with amendments, repealed or added as shown in—Attachment A," a copy of which is attached hereto and
incorporated herein by reference.
If any section,subsection,paragraph,sentence,clause or phrase of this Ordinance is for any reason held
or decided to be invalid or unconstitutional, such decision shall not affect the validity of the remaining
portion.The Board of County Commissioners hereby declares that it would have passed the Ordinance,and
each and every section,subsection, paragraph,sentence,clause and phrase thereof irrespective of the fact
that any one or more section,subsection,paragraph,sentence,clause,clause and phrase might be declared
to be unconstitutional and invalid.
This Ordinance shall become effective January 1, 1986.
The above and foregoing Ordinance No. 9-D was, on motion duly made and seconded, adopted by the
following vote on the --- day of ----, A.D., 1985.
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
Jacqueline Johnson, Chairman
•
Gene R.'Biantner, Pro-Tam
C. W. Kirby
Gordon E. Lacy
•
ATTEST: Frank Yamaguchi
Weld County Clerk and Recorder
and Clerk to the Board
BY:
Deputy County Clerk .
• APPROVED AS TO FORM:
•
County Attorney -
First Reading: November 25, 1985
Published: November 28, 1985, in the Johnstown Breeze
Second Reading: December 9, 1985
Published: December 12, 1985, in the Johnstown Breeze •
Final Reading: December. 23, 1985 _
Published:December 28, 1985, in the Johnstown Breeze
Effective Date - January 1, 1986
ATTACHMENT A
SECTION II is repealed and re-enacted to read as follows: •
SECTION II.DEFINITIONS:The following definitions shall apply in the interpretation and enforcement of this
Regulation. The word."shall" as used herein indicates a mandatory requirement.
2.1 Absorption System:a leaching field and adjacent soils or other system for the treatment of sewage in
an individual sewage disposal system by means of absorption into the ground.
2.2 Absorption Trench: one or more trenches not over three(3) feet in width and of varying length and
depth in which sewage effluent Is precolated into the soil.
2.3 table Design:a standardized design of tank,plant or system,the installation of which is permitted
by the Department, provided that site requirements are met.
2.4 Aeration Plant: equipment or devices for the aerobic treatment of sewage.
2.5
Aerobic
Is e Sewage
and by the System:
of or
m: an individual
ewage disposal system employing biological
action
n.
2:6 Analytical Perimeters:
A Temperature (T): The measure of the thermal state of substance with respect to its ability to
communicate heat to its environment reported as degrees Centigrade (C).
B Suspended
Sli laboratory(SS): solids reported astmhe
wage-that
per tit caner (mg prgemoved readily by standard filtering
p esuspendied solids at 800 degrees C. the reportedtlas per of cent lids in ofstotal suspended e which are Isolids.on ignition of the dry
nettleable Solids: solids in the sewage which will settle,as distinct,from remaining in suspension
reported as milliliters per liter of sample after 30 minutes of settling time (ml. 30'mm.).
E. pH: the logarithm of the reciprocal of the. hydrogen ion concentration.
F. Dissolved O ggggg (DO): the oxygen dissolved In sewage en reportedas milligrams per liter (mg/p.•
ivalent ertion thata can�ibel oxidized by a strong chemical measure
oxid zing agent andureportedi s that
milligramsfper 0rganic
liter (mg/Q.
H. Five Day Biochemical Oxygen Demand (SODI: the quantity of oxygen used in the biochemical
oxidation of organic matter in five days at 20 degrees C under specified conditions reported as milligrams
per liter (mg/I).
2.7 Applioafl any person who submits an application for a permit for an individual sewage disposal system.
•
2.8 Approved: official consent given in writing by the Department.
2.9 Bedrock: the more or less solid undisturbed rock In place either at the surface or beneath surticial
deposits of gravel,sand,or soil or a consolidated rock formation of impervious material.which may exhibit
jointed, fractured, or deteriorated characteristics.
2.10 Board el Health:the Board of Health as designated by the Board of County Commissioners of Weld
County, Colorado.
2.11 building drain and te.which receives rt i the the discharge of of a drainage h building atem drainwhich extends and conveys It to am he end of public sewer,
private sewer, individual sewage disposal system or other point of disposal.
2.12 Cesspool: a covered underground receptacle which receives untreated sewage from a building and
permits the untreated.sewage to seep into surrounding soil.
•
2.13. Cistern: a water-tight covered receptacle of non-toxic materials which is designed for storage of
potable water.2.14 Competent Technician: an employee of the Department-who is able to conduct and Interpret the
results of a site evaluation.
2.15 Comeonent Parts: all physical, mechanical and electrical components of an aeration plant.
2.16 Composting Toilet:a unit which consists of a toilet seat and cover over a riser which connects to a
compartment or vault that contains or will receive composting materiels sufficient to reduce waste by
• aerobic decomposition.
2,17 Con: -.t BasiW a water tight receptacle used for the retention of effluent for a specified length of time
so that i tired biological or chemical action can occur.
•
2.18 Department: the Weld County Health Department
2.19 Dispersal System:a system for the disposal of efflunet,atter final treatment in an individual sewage
disposal system,by's method which does not depend upon or utilize the treatment capacity of the soil.
•
2.20 Distribution Sex:a water-tight chamber below the outlet level of a septic tank or treatment unit and
from which effluent enters the absorption system. -
2.21 Division: the Division of Health Protection Services;Wale County Health Department.
2.22 Dosing Tent a tank which provides for a high rate, periodic discharge of effluent.
2.23 Effluent the liquid waste discharge from an individual sewage disposal system.
2.24 Environmental Health Specialist a person who Is trained in physical, biological and sanitary
science to carry out inspectional and educational duties in the field of environmental health.
2.25 Eeapotransplratet Systems a-type of dispersal system thdt wholly or primarily utilizes liquid
evaporation or transpiration by vegetation as a means of effluent disposal.
2.26 Experimental Systems:a new device or design in which further testing is required in order to provide
sufficient information before acceptance.
2.27 Rood Chain Cape those crops grown for table use which includes onions, potatoes, and salad
-vegetables. This does not include wheat, corn, barley, or other grains. • Q,p
2.28 Geologists a professional Geologist as defined in 6.6.102, CRS 1973.
2.29 Groundwaer.Tabim the upper surface of ground water in the zone of saturation of a geologic
formation.
2.30 Health Offices the chief administrative and executive officer of Weld County Health Department or
other representative as designated by the Board of Health or Board of County Commissioners of Weld
County. •
2.31 Melding Tank: a water-tight receptacle for the retention of sewage either before,during or after -
-treatment. -
2.32 Individual Sewage Di I System and the terms "System" and "I.S.D.S.": a system or •
-facility for treating, neutralizing,stabilizing or disposing of sewage which is not a part of or connected to a
sewage treatment works.
2.33 Lift Station: a device used.for the vertical lifting of effluent to the required horizontal level of either
the absorption field or septic tank.
2.34 Limiting Zone: any soil horizon in the soil profile or underlying strata which prevents the soil from
acting as an effective filter of organisms and suspended solids from effluent,and shall include seasonal an
perched water tables, determined by direct'observation or by observation of salts, chemically reduced.kon
expressed as mottling or gleying; bedrock with impermeable, slowly permeable, or fractured strata; and
excessively coarse sands and/or gravels.
2.35 Liner:a water-tight membrane liner of at least 0.01 meter(10 millimeters)thickness which is used to
prevent effluent from entering the soil or groundwater table. Material shall be polyvinyl chloride or material
of equal integrity.
2.36 Manufacturer: the person or firm that constructs or assembles individual sewage treatment syste'
components.
2.37 Matrix: the material in which effluent is dispersed for percolation -or capillary action.
2.38 Mini-System:a system designed to accommodate wastes only from sinks,lavatories,tubs,showers or
laundries.
2.39 Owner:the person who is owner of record for the land on whtch an individual sewage disposal system
is to be designed, constructed, installed, altered, extended or used.
2.40 Percolation Test: a subsurface soil test at the depth of a proposed absorption system or similar
component of an individual sewage disposal system to determine the permeability of the soil,the results of
which are normally expressed as the length of time in which one inch of water is absorbed.
2.41 Permeability: the property of a material which permits movement of water through the material.
2.42 Permit:a permit for the construction or alteration, installation and use or for the repair of an individual
sewage disposal system.
2.43 Person: individual, partnership, firm, corporation, association or other legal entity and also the state.
any political subdivision thereof or other governmental entity.
2.44 Plot Plan:an accurate drawing or map indicating the dimensions, acreage, and locationof property
lines, buildings, wells. individual sewage disposal systems, water courses, geographical features and other
pertioent information as required.
2.45 Privy: a 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 animals.
2.46 Registered Professional Engineer: an engineer licensed in accordance with 12.25-11 CRS.
•
247 Sand Filter a subsurface system which utilizes filtration or absorption or both, which contains an
intermediate layer of sand as filter material
2.48 Seepage Mod:a type of soil absorption system dependent upon suite/ate soil at a depth greater than
that of an absorption trench or bed and designed on the basis of_sidewall area.
stem t t a f at of anan absorPit:
ptionttrrench or had and ndesignedd on e then basis not suitable
dewall aarea.depth greater than
2.50 Septage: the liquid and solid contents of a primary treatment facility.
2.51 Septic Tank: a watertight accessible, covered receptacle designed and constructed to receive
sewage from a building sewer. to settle solids from the liquid, to digest organic matter and store digested
solids through a period of retention and allow the clarified liquids to discharge to other treatment units for.
final disposal:
2.52'Serial Distribution: an arrangement of absorption trenches. seepage pits or seepage beds so that
effluent is retained in each successive component before flowing into the succeeding component.
2.53 Sewage: a combination of liquid wastes which may include chemicals, house wastes, human excreta.
animal or vegetable matter in suspension or solution,and other solids in suspension or solution,and which is
discharged from a dwelling, building or other establishment.
254 Sewage Treatment Works:a system or facility for treating, neutralizing,stabilizing of sewage,which
system or facility has a design capacity to receive more than 2,000 gallons of sewage per day,the disposal
of
appurtenances such which is by means other than
interceptors. collection absorption
nes,youtfall and outlet sewers,'pumping stem. The ter "sewage treatment stations.'
and related equipment.
2.55 Site Evaluation: the testing of soils and examination of the location of a proposed 1.S.D.S..to
determine the presence of.and limitations imposed by,the field percolation rate,limiting zone(s),slope,and
pertinent ground features; as performed by a competent technician or registered professional engineer.
256 Soil Horizon: a distinct layer of soil, gravel, cobbles, or bedrock, separately or in combination,
-approximately parallel to the soil surface with characteristics produced:by soil-forming or geologic
- processes.
2.57 Soil profile:the collection of all soil horizons and bedrock,from the surface of the ground to ask.
of eight (8) feet or to bedrock, whichever is less, as exposed in a test pit or boring log.
•
2.58 Stabilisation Pond:a reservoir or diked land which receives aeration plant effluent for final treatment
or evaporation.
2.59 Stabs Waters:any and all surface and subsurface waters which are contained in or flow in or through
this state, except waters in sewage systems, waters in treatment works of disposal systems, waters In
potable water distribution-systems and all waters withdrawn for use,until all uses and treatment have been
completed.
2.60 Suitable Sell:a soil which will effectively filter effluent by removal-pi organisms and suspended solids
before the effluent.reaches any highly permeable.earth such as joints in bedrock, gravels or very coarse
soils and which meets percolation test requirements and has a vertical thickness of at least four feet
beneath the bottom of the proposed absorption trench or bed.
2.61 Systems CI a person engaged in and who holds himself out as a specialist in the cleaning and
pumping of sewage disposal systems and removal of the residues deposited in the operation thereof.,
2.62 Systems Contractor: a person engaged in and who holds himself out as a specialist in the
installation, renovation, and repair of sewage disposal systems.
2.63 Unifermlty Coefficient:the quotient of the grain size that is 40%coarser by weight than itself divided
by the grain size which is 90% coarser (effective size) by weight than itself.
2.64 Vault•. a water-tight, covered receptacle which is designed to receive and store sewage and is
accessible for the periodic removal of as contents, •
2.85 Wastewater
which arovi
Pond: a designed
on d pond
i which degree of xcl
receives
exclusively
wastewater from a first stone -treatme2.66 Water Quality Control Commission: the.Commission created by 25-8-201, CRS. -
SECTION 3.3 A(10) is amended to read as follows:10. Street or road address of-the property.
SECTION 3.3 B is repealed and re-enacted to read as follows: .
B.The maximum portion of the lot or building site that can be used for I.S,D.S. shall be twenty-five(25)
- percent unless a waiver has been obtained and approved by the Board of Health for experimental or water
conservation methods.
SECTION 3.3 C(4) is repealed and re-enacted to read as follows:
4.Any addition to a structure which will or is likely to result in increased sewage flow to an existing system
shall require approval by the Department and may require expansion of the individual sewage disposal
system or parts thereof.
SECTION'3.4 D is repealed and re-enacted to read as follows:
0..The determination of the suitability of the site and of the proposed design based upon the land use and
population density In the area; the use to which the property is to be put; the size 4f the lot; depth
verification of the ground water table;suitable soil;limiting zone(s);and depth to bedrock;the location of the
disposal system with reference to wells,streams,lake,ditches,structures,and other geographical features
SECTION 3.10 is repealed,and re-enacted td read as follows r,r, rv • .. F
3.10 If upon final Inspection of the system,the Health Officer finds it installed in accordance with these
regulations and the permit, the Health Officer shalt issue final approval for the completed system. If the
system has been designed.by or constructed under the supervision of a Registered Professional Engineer,
the Department shall;squire that said engineer shall at this time certify,in writing to the Department,that
construction and installation of the system has been completed in accordance with the terms of the permit
and this regulation.If theJnspection alaCloses 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'falls,to comply with this
regulation,approval shall be withheld.Written notice of.defkknciescausing the disapproval shall be given
the Systems Contractor.Another inspection shall be-made upon notification from the Systems Contractor
that the•deficiencies have been corrected and the system thought into compliance with this regulation.'
SECTION f3.17 c is repealed and re-enacted to read as follows: •
C.No individual sewage disposal system presently in use which does not comply with the provisions of this
regulation regarding minimum separation between limiting zone(s)and the bottom of an absorption system
shall be permitted to-remain in use without.,compliance-with this regulation.
SECTION 3.22 is repealed and re-enacted to read as follows:
3.22 Regulations of Systems Cleaners:
•
A. No person shall engage in the cleaning of sewage disposal systems or the transportation of septage to
a-disposal site unless he holds a valid Systems Cleaner License 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 ordinance by the Board of Weld'County Commissioners.Licenses shall expire on December 3-1 of
each year and an annual renewal fee, as set by separate ordinance,by the Board of Weld County
Commissioners,shall be charged.A license which lapses because of failure to renew oris revoked shall be
subject to the fee established for new license upon reapplication.
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 septage 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.A license holder shall maintain his equipment so as to Insure that no spillage of septage will occur during
transportation , and that his 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 the site designated and recommended by the Board of%Health and approved by the Weld
County Board of Commissioners.
c. By land application if applied in compliance with all of the.following requirements.
1.The licensed systems cleaner must make arrangements with the land owner-to insure that all septage is
incorporated into-the soil by plowing or disking within twelve (12) hours of the time of application.
2.The licensed systems cleaner must make arrangements with the land owner or farm manager to insure
that food chain crops shall not be grown within eighteen (18) months of the last application of septage.
a
3: Land application and subsequent tillage shall not conflict with regulations regarding the plowing of ,
fragile-grasslands. .
4. Site requirements for land application.
a. Surface slope shall be 0 to 8 percent. •
b. Septage shall not be applied ih drainage areas within one mile upstream of direct diversion of surface
water for public water supplies.
c. Septage shall not be applied within 200 feet of surface water or ah exi:;ling stream bed including
perennial or intermittent streams.
d. Septage shall not be applied within 100 feet of a domestic wale supply well
e:Protection of groundwater—the seasonal high ground water table shall not he within live 151 feet of the
surface of the land. •
5. The licensed systems cleaner shall provide the Department a fist of the legal descriptions of all kind
application sites utilized for disposal. this shall be provided monthly
6. Prior.to the issuance of or renewal of a license, the Health Officer may require the .giplu.nnl t.
demonstrate adequate knowledge of 3.22 A, B. C. or or these regulations
4. Prior to the issuance of or renewal of a license, the Health Ott cor may mouse Ilu• .n,i antl ao
demonstrate adequate knowledge of 3.17 A. B. C.
C. Revocation of a Systems Cleaners License '
1. The procedures as described in 3,21 (Cl shall be followed tot the via.alk,ni d Ir Iusr
SECTION 4.2 TABLE 11 is repealed and re-enacted' to read as Sul lows:
4.2 Minimum distances between components of a sewage di 0poe:al .system and
pertinent ground features .ball be :u: prear 'Ibud In 'table II- • - -
it TABLE II .
am�y -1%m8—, o A
ro y Table of Minimum Horizontal Distances in Feet Between .
ant, 973.1.0°. O Components of a Sewage Disposal System and Pertinent Ground Features
m m O
o'$F •=.ng,mom F Y
•
m9.g man a§ 2 CI
mm mmm tr
ma=_ m$gbm°m w
om' mm_.m_.
mdm2_a 'image S F wn Ji .1.p th . . �_
m aroma a ^
mks .��5o a m p:$F .n 6 0 - '
m'7 $1� y$'pm n i .s F 65: _
mK amz8im m • p i
$' o nm'i 8m x$ o` o -
$op m33moa ' o '
0 J '- m 3,m soriogEwells or Suction Lines 50 50 50 60 60 I e100 r 100 IDOL
m m pp ' O e potable water Supply.Lines 10 10 10 10 10 25 25 i 25 5 25 25 25O3 m R Lq 91",m m m m owelline or Occupied Building 0 o. Cistern }0 5a 15 I 15 15 I 15 I 15 ' I 25
i:€ mPam m pryerty_Lines 0 lob 10 I 10 to 10 I :6 20
• .too . lao-Cro re 1041 g S o' Subsoil Drains lot lot 10 1 10 10 1 25 I 25 25 kes and Nspg m>>d m D int R or wrmittentrdstrearslel.str aeaa SOc 5Dc- 25 ISt 35[ 25 I ' 35 103
tO 3 3 t g m G - Ditch (!) Sc) .. 50cI 50c 25 loot I 100! 100 I 100 100n
iGmaa m One' a Swale or.Gully let .10cl l0c 110 , 10 10 i. 15 15 f 25
n n`cPDo �.\d.SIC
_Om e.e.. m.'... . . .n ...u .. ..ntan.e ea I5 Onager'thee en ryc .al.. .
i m p o o m ..e I geological , ,••
fag
'im ' ..M. Swale golly 1 . . .pine shallow SySSs p T .a. a period .1'.. 1 . . na.a. . tuna, .
9m Rill' •• .:..:...e.. a A.....inn
a one,,v... .n. rlen. ae.. Lieu..
3 it s'6c'm .. in whin ..t.utnt .e..ne . .". I.. .n.yu.e . ..
1-6. SO o C •• .nt...meshy ...... a... ell cot maple to.....r t .e 1 a' bep n ..:o.... . 1.. era full. inn.
ai m 7 m m pleat. ••• • ..........n...'th: flood e 1. .t a n. :"In leto"'a.
a m 0 0 mm m�3 C 5. sera. e... .5.11 c aptly.e.. .Illn.n.n....a. I.wt tented t. 5. na ..r IIm. el.. .N irate
a'_•_• ....a...a..lal..' ..
B ad mm'c C .. w.ae:' :.,:u............. : 1.: " ."':el;.'1C.'c`.`::':.,.I.."..1 .. .n.
AO. a 3•m[m o a. Ln..Inge shown.p be p...uu. .e.re pawn.. ... noetru.... a ..lual.., .pea.e....a e`
mg roam_ •
;a v3ys ▪ 71▪ 8 :: la lea III ..
FEUD 3m m- . •
IA,. rc}'Kti.MltM.1 - -
_-,_ _-- - 17
•
SECTION 4.4 is repealed and re-enacted to read as follows: . , �.
Soil Profile:Mast pit or trench for the examination of the soil profile must be provided to a depth of eight
(8) feet or to bedrock, whichever is less, to determine conformance with 4.6 of these regulations.
A.The test pit shall have minimum horizontal dimensions of three(3)feet'in width and six(6)feet in.length.
B.To allow entry and exit,at least one wall of:the test pit shall have a:maximum slope of forthy-five(45)
degrees from horizontal, or a ladder must be provided. .
SECTION 4.6 is repealed and re-enacted to read as follows:
A Suitable.Soli-Shall Not tho Following Orltoric •
A A minimum depth of four(4)feet between the bottom of the proposed absorption field and any limiting
•
zone(s).
B. Has the capacity to adequately disperse the designed'effluent-loading as determined by a field
percolation rate of between five(5)minutes per inch and 80 minutes per inch-or by other approved soil tests.
' Ca Acts as an effective filter.within its depth for the removal of pathogenic organisms.
SECTION 5.2 B is repealed and re-enacted to read as-follows: -
B.The building sewer to septic tank shall be•laid with a minimum fall of one-eight WC inch per foot(1/.inch`
fall per foot is recommended).Bends in the building sewer shall-be limited to forty-five(45)degree ells, or
•
long sweep quarter bend.The building sewer installation shall meet all of the requirements of the Colorado
Technical Plumbing Code, 1972 Revised,or such local Code as•may be in force.The inlet and outlet pipes ,
shall be grouted and sealed with waterproof materials.
SECTION 5.2 C is repealed and-re-enacted to read as follows:
C. Backfilling around a septic tank shall be accomplished in a manner to prevent settlement end avoid
undue strain on the tank and the pipes entering and leaving the tank.Cast-iron pipe or a minimum of ASTh1
Standard 3034. PVC SCR 35, or Schedule 40 PVC shall be used for the building sewer and for the septic
tank to the head of.the leachfield and shall be laid with a minimum fall of one-eight (ye) inch per fact.
SECTION 5.4 B(2) is repealed and re-enacted to read as follows: - - , •
2. Where the ground slope is in excess of 25% in the area of the proposed absorption system:
SECTION 5.4 C(5 & 6) are amended to read as follows:
5. The bottom of the trench or bed and distribution lines shall be level,
6. The absorption field area shall be protected as to prevent vehicular and livestock traffic. .
i
SECTION 54 0(5) is. repealed and.re-enacted to read as follows: .
5.Outlet lines from the distribution box 10 the laterals shall he of solid wall pipe for a minimum of five(5)
feet `
SECTION 5.4 G is amended to read as follows:
G. The minimum horizontal distance required from cut banks and fill areas to I.S.D.S. components
discharging
har ging top edge
effluent into
otor onto the surrounding
soil shall be four(4)times the height of the bank,measured
frthe ek _ ch-- ---)1
-
I r ;_
5 earl I renal:/hca---
SECT ION ',., A ail l'pi'•ded and re-enacted to read as follows
•
.,S Absorption Trenches
A Al led:,' two benches of near equal length shall be constructed with a length not exceeding 100 feet,a
w alth riot exceeding Ioree IA feet, and a depth not exceeding three(3)feet to the bottom of the excavated
herbal hum ,pound level existing at the Site Evaluation. Only one trench will be required if the-System
squired fell ao:a(toes not exceed 200 square feet.There shall be a minimum(horizontal measurement)of
x tea tool •d undisturbed earth between adjacent trenches. Any dimensional change from these
sire-d,eahons iequne approval from the Health Officer A disposal line shall be provided for each trench and
shall be suuoundeil by cleans washed.graded gravel or rock or similar aggregate.The material may range in
„r„'Lull then-loudhs µ.l inch to two and a half 12'xl inches.The material shall extend from at least two(2)
in,hoc, above the top of the pipe, level across the trench, to at least six(6f-inches below the bottom-of t or
he
'aideolio.
Tint 1f .1 lmilarpe gravel
shall
materiall to prevent with
theugravel fromulbecoming clogged a two(2)y the earth backfier of hay
an - '
shall
hel�al vious
i.l ltovering w twelve (121al not be used. as this interfer inches of backlit' placed over the s w itrench th pwhich sshalt be B adedtoiration at the apomotece.Threrunoff
wale, horn the disposal area No trees or shrubs shall be placed closer than six(6) feet to the trench.
Iire button,'d the bench shall be excavated level Four(4)toot depth of suitable sell below the bottom of the
uonch n. o.iitorod Machine tamping rolling or hydraulic compaction ottinal cover shall not o ppera Via. _ .,
howeve, hand Gun-ping may he allowed Where-necessary to aiablithe theaea to`pra
vant,nlnisinn of .hxtam•ons wales A distribution box snail be included in the absorption trenchsystem.and shall
moo ,aqu,ienienic of subsurhon 54 0 Trenches shall follow the ground contour surface so that variations
_,n trench depth shall be minimized
inches er e ed with it l the perloiafions shalltbe laid such that that an ees of three ven distriburution of effluent ova over tbrench system twilt occur.
,Note each perforated pipe segment shall he so placed that effluent will be equally dispersed downward into
the.(bavel from each row of pertreiviuns Mast segment)
•
St Lrli IN 56 A ,s repealed and ill-P.edcled to read as follows
',I, Seepage Beds
A Seepage beds shall be constructed with a length not exceeding 100 teat,a-width greater than three(3)
Reel and depth not exceeding.three 131 feet to the bottom of the excavated bed from ground level existing at '
the• Site Evaluation Any dlmeeslonal change from these specifications requires approval from the Health
ONicel A twelve 1121 inch layer of three-fourths Oki to two and a half(2'11 inch clean,washed,graded
lock of other similar material shal`be distributed evenly and level over the entire bed,with distribution ravel,
set at()depth to insure at least six(6)inches of gravel below and two(2)Inches of gravel above each line.A
cover of untreated building paper.a two(2)inch layer of straw,or a similar pervious material shalt be placed
on top of the graver After final inspection,backfill shall be placed over the bed to minimum depth of twelve
1121 inches The final cover shall be graded to promote drainage runoff away from the disposal area. In the
casino( an'abovetructed to
prevent lateral flow ground
waste discharge outside of tem, such as a mounded
absorption field,m, an rNo trees vious ror sm hrubs shall be sbe placed
closer than six(6) feet from the system.A four(4)fool depth of suitable soil below the bottom of the bed is '
required. Machine tamping, rolling or hydraulic compaction of final cover shall not be permitted However,
hand tamping may be allowed where necessary to stabilize the-soil to,prevent erosion or the intrusion of.
extraneous water •
SECTION 64 C is.repealed and reenacted to read as follows:
C The matrix shall be installed with care so that the liner is not perforated. Havy machinery shall not be
permitted to drive over the matrix or the liner.The surface of the matrix shall be convex so as to permit run-
off of rainwater and to increase the air turbulence over it.The surface of the matrix shalt be provided with
sod, or with grass cover, or with any other plants specified by the designer and shall be maintained as
designed. The bed area shall be protected as to prevent vehicular, pedestrian, and livestock travel:
SECTION 7.2 is amended to include the following as the last sentence in the paragraph.
Metal or coated metal vaults are prohibited. \ r
APPENDIX 2 fa repealed and re-enacted to read as follows:
NAMES MO SIZE LIMITS OF PRACTICAL-SIZE
CLASSES ACCORDING TO SIX SYSTEMS
•
SYSTEM
•
e oleo and S u and clq Mnnrn ce. '
Coon I'npneer{IVs W{rKa ,N en M! Floe ono sek Cs t: ravel C { II tondos
Otis ow amyl Yulukwfl I V I•
I 1
}.xnen[an/1MYOMgn ' C4r—.—�.1
Ii air logO.Of I SW Floe{aloe feMln sans r:..r yy...m Mea.M.I Claud
°duals Colloids i I Qin °. OF.N.'.s
��
0 o,,,,,,,5 is. Clef
Ti,,,,,. nd ,.a,5 Sat . {Y,e MM M diu,' Coons _
p
Colloids tine 0•J
'I IBa' •
l ,u..aun Clay. Sal o 1s:frt 6,,,,a..in rauue5 Cooker
MM sand k we sand GJs.n[.
Mw I I
•
♦ 5 u5 Departmental Ye.y I "r
•,iwpun- Cloy see veyr Floe McL.• I,d Here!
0 OK� {slid rise row Coo, ma.ol teasel
on {JM Bend 15.561e y
Mnet
-
•
5.Wsnaoonlcea Sae.eu Clay 5xr en.MM c-e s.WW1 0 111 el Sea SswKe
• l....J ,.n..l :..a , ,
0000 0.002 0.02 0.2 10 '20
Paten dienerne Ina
' * Preferred System
SOURCE: EPA Designed Manual for Onslte Wastewater Treatment • Disposal Systems, .. - '
-APPENDIX 2-
AFFIDAVIT OF PUBLICATION
THE JOHNSTOWN BREEZE
STATE OF COLORADO
ss
COUNTY OF WELD
• I, Clyde Briggs, do solemnly swear that I
am publisher of The Johnstown Breeze;
that the same is a weekly newspaper
printed, in whole or in part, and published
in the County of Weld, State of Colorado,
and has a general circulation therein; that
said newspaper has been published
continuously and uninterruptedly in said
County of Weld for a period of more than
fifty-two consecutive weeks prior to the
first publication of the annexed legal notice
or advertisement; 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 weekly newspaper duly
qualified for publishing legal notices and
advertisements within the meaning of the
laws of the State of Colorado.
That the annexed legal notice or advertise-
ment was published in the regular and
entire issue of every number of said weekly
newspaper for the period of ..L.. consecu-
tive insertions; and that the first
publication of said notice was in the issue of
said newspaper dated .
/z 7, A.l),
and that the last puhlica ion of said notice
was in the issue of said newspaper dated
, A.D. 19
• In witness wl eL_e9j I have hti,•leunto set
my hand this A. I day of IV If.........,
A.D. IA S.
......
Publisher
Subscribed and sworn to before me, a
Notary Public in and for the Caunty of
Weld, State of Colora&o, this .ii day of
A.D. 19`i.
�p Q4/1ik fir( Notary itublic
Jv�nhftW . .3
My commission expires .749t c r
16 — Bros*, Nov. 28, 1985
•
ORDINANCE NO, DO
IN SECTIONS TO F THE INDIVIDUAL DUAL AL AND
ALNSYST ME REGULATIONS,ADDITIONS,OF
CERTAIN AS
AMENDED BY ORDINANCE'NOS. 9-B AND SC
BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF WELD COUNTY, COLORADO:d ofand WHEREAS
na V eld the
rHome Rule Charrtteres Commissioners
fwtthlth authority of administering the affairs of Weld
County, County,Colorado, pursuant to Colorado statute
CoSloretlo, andauthority he Home RuleCharteBoard
un erA County
1Commissioners it 5,CRS,to has
.power and
sewage dispose(system rregulations
for all areas of the County of Weld, and
WHEREAS, the Board of County Commissioners of Weld County, Colorado, has previously adopted
Ordinance No. 9, with subsequent re-enactments and amendments the Weld County Individual Sewage ,
Disposal System Regulations, establishing a comprehensive set of rules and regulations pertaining to
individual sewage disposal systems, and S regulations WE -the
u olleorado ado Detain changes artment of Hsieal he guidelines for individual sewage disposal system
Colorado Department of Health,Planning and Standards Section,Wate d Quallity Control Division is currrenty
'reviewing these amendments to determine compliance with_the current guidelines, and
WHEREAS, the Weld County.Board of Health will review this matter on November 28, 1985, to provide
recommendations to this Board prior to the second reading of this Ordinance, and
this ds and to the Individual Sewage nDisposal System Regulationsnes that the la inn of thethe bestninterestnof the health,nsa additions
welfare of the citizens of the County Qf Weld.- NOW,THEREFORE, BE IT ORDAINED by the Board of County Commissioners of Weld County,Colorado,
that the following provisions of the Weld County Individual Sewage Disposal System Regulations, Weld
County Ordinance 9-A, as amended by Weld County Ordinance 9-B and 9-C, be repealed and re-enacted,
with amendments, repealed Cr added as shown in "Attachment A,"a copy of which is attached hereto and
incorporated herein by reference.
If any section,subsection,paragraph,sentence,clause or phrase of this Ordinance is for any reason held
or decided to be invalid or unconstitutional, such decision shall not affect the validity of the remaining
portion.The Board of County Commissioners hereby declares that it would have passed the Ordinance,and
each and every section,subsection, paragraph,sentence,clause and phrase thereof irrespective of the fact
that any one or more section,subsection,paragraph,sentence,clause,clause and phrase might be declared
to be unconstitutional and invalid.
This Ordinance shall become effective January 1, 1986.
The above and foregoing Ordinance No. 9-D was, on motion duly made and seconded, adopted by the
following vote on the --- day of ----
0.D., 1985.
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
Jacqueline Johnson, Chairman
Gene R. Brantner, Pro-Tern
—. .— —_---. C. W. Kirby
Gordon E. Lacy
ATTEST:
Frank Yamaguchi
Weld County Clerk and Recorder
and Clerk to the Board
BY:
•
Deputy County Clerk
APPROVED AS TO FORM: •
. •
County Attorney
First Reading: November 25, 1985
Published: November 28, 1986, in.the Johnstown Breeze
Second Reading: December..8,-1985
Publisheth'beoembey 12V 1985, In the Johnstown Breeze s .
Final Reading: December 23 1085
Published: December 28, 1985, In the Johnstown Breeze
Effective Date - January 1, 1986
ATTACHMENT A
•
SECTION II is repealed and re-enacted to read as follows:
SECTION II.DEFINITIONS:The following definitions shall apply in the interpretation and enforcement of this
Regulation. The word "shall" as used herein indicates a mandatory requirement.
2.1 Absorption Systems a leaching field and adjacent soils or other system for the treatment of sewage in
an individual sewage disposal system by means of absorption into the ground.
2.2 Absorption Trench: one or more trenches not over those (3) feet in width and of varying length and
depth in which sewage effluent Is precolated Into-the soil.
2.3Acceptable Design:a standardized design of tank,plant or system,the installation of which is permitted
by the Department, provided that site requirements are met.
2.4 Aeration Plant: equipment or devices for the aerobic treatment of sewage.
2.5 Aerobic Sewage Treatment System: an individual sewage disposal system employing biological
action which is maintained by the addition of air or oxygen.
2.6 Analytical Parameters:
A Temperature (T): The measure of the thermal state of substance with respect to its ability to
communicate heat to its environment reported as degrees Centigrade (C).
B. Suspended Solids (BS): solids in the sewage that can be removed readily by standard filtering
procedures in a laboratory reported as milligrams per liter (mg/p.
C.Volatile Suspended Solids MSS):the quantity of solids in sewage which are lost on ignition of the dry
-suspended solids at 600 degrees C.-reported as percent of total suspended solids.
D. Settleable Solids: solids in the sewage which will settle, as distinct from remaining in suspension
reported as milliliters per liter of sample after 30 minutes of settling time (ml. 30 min.).
E. pH: the logarithm of the reciprocal of the hydrogen ion concentration.
F. Dissolved Oxxyygen (DO): the oxygen dissolved in sewage reported as milligrams per liter (mg/I).
that can Oxygen
by e a song chemical oxidizing agd: is the measure of the entnanduivalent of reported asat milllirtion igrams iper organic
liter (mg/I).
H. Five Day Biochemical Oxygen Demand (SOD): the quantity of oxygen used in the biochemical
oxidation of organic matter in five days at 20 degrees C under specified conditions reported as milligrams
per liter (mg/I).
2.7 Applicant:any person who submits an application for a permit for an individual sewage disposal system.
2.8 Approved:. official consent given in writing by the Department.
2.9 Bedrock: the more or less solid undisturbed rock in place either at the surface or beneath surficial
deposits of gravel, sand, or soil or a consolidated rock formation of impervious material which-may exhibit
jointed, fractured, or deteriorated characteristics.
• 2.10 Board o1 Health:the Board of Health as designated by the Board of County Commissioners of Weld
County, Colorado. _
2.11 Building Sewer: that part of the piping of a drainage system which extends from the end of the
building drain and which receives the discharge of the building drain and conveys it to a public sewer,
private sewer, individual sewage disposal system or other point of disposal.
2.12 Cesspool: a oovered underground receptacle which receives untreated sewage from a building and
permits the untreated sewage to seep into surrounding soil.
' 2.13. Cistern: a water-tight covered receptacle of non-toxic materials which Is designed for storage of
potable water.
2.14 Competent Technician an employee of the Department who is able to conduct and interpret the
results of a site evaluation.
2.15.Component Ports: all physical, mechanical and electrical components of an aeration plant.
2.16 Composting Toilet:a unit which consists of a toilet seat and cover over a riser which connects to a
compartment or vault that contains or will receive composting materials sufficient toreduce waste by
aerobic decomposition. -
2.17 Cent-.-t Basin:a water tight receptacle used for the,retention of effluent for a specified length of time
-so that rc fired biological -or chemical action can occur.
2.18 Department: the Weld County Health Department _
disposal2.19 syastem, by a method which the
or utilr ize final treatment
tree mentacapacitty of tal he sewage
•
2.20 Distribution Doss a water-tight chamber below the outlet level of a septic lank-or treatment unit and
. from which effluent enters the absorption system.
2.21 Divisions the Division of Health Protection Services,.Weld County Health Department.
2.22-Dosing Tanta a tank which provides for a high rate, periodic discharge of effluent.
2.23 Effluents the liquid waste discharge from an individual sewage disposal system.
2.24 Environmental Health Specialist: a person who is trained in physical, biological and sanitary
-science to carry out inspectional and educational duties in the field of environmental health.
2.25 Evapotranspiration Systems a-type of dispersal system that wholly or primarily utilizes liquid
evaporation or transpiration by vegetation as a means of effluent disposal.
2.26 Exporlmental Systems:a new device or design in which further testing is required in order to provide
s. sufficient-information before acceptance.
2.27 Peed Chain Crop those crops grown for table use which Includes onions, potatoes, and salad
vegetables. This does not include wheat, corn, barley, or other grains.
2.28 Geologist: a professional Geologist as defined in 6-5-102, CRS 1973.
2.29 Groundwater Tables the upper surface of ground water in the zone of saturation of a geologic
formation.
•
2.30 Health Officer:the chief administrative and executive officer of Weld County Health Departrm •
other representative as designated by the Board of Health or Board of County Commissioners of
County. -
2.31 Molding Tank: a water-tight receptacle for-the retention of sewage either before, during or after
treatment.
2.32 Individual-Sewage DI I System and the terms "System" and "I.S.D.S.'5 a system or
facility for treating, neutralizing, stabilizing or disposing of sewage which is not a part of or connected to a
sewage treatment works -
2.33 Lift Station: a device used for the vertical lifting of effluent to the required-horizontal level of either
the absorption field or septic tank.
2.34 Limiting Zene: any soil horizon in the soil profile or underlying strata which prevents the soil from
acting as an effective filter of organisms and suspended solids from effluent,and shall Include seasonal an
perched water tables, determined by direct observation or by observation of salts,_chemically reduced iron
expressed as mottling or gleying; bedrock with impermeable, slowly permeable, or fractured strata; and
excessively coarse sands and/or gravels.
2.35 Liner:a water-tight membrane liner of at least 0.01 meter(10 millimeters)thickness which is used to
prevent effluent from entering the soil or groundwater table. Material shall be polyvinyl chloride or material
of equal integrity.
2.36 Manufacturer: the person or firm that constructs or assembles individual sewage treatment system
components.
2.37 Matrix: the material in which effluent is dispersed for percolation or capillary action.
2.38 Mini•Systom:a system designed to accommodate wastes only from sinks,lavatories,tubs,show --or
laundries.
2.39 Owner:the person who is owner of record for the land on which an individual sewage disposal
is to be designed, constructed, installed, altered, extended or used.
2.40 percolation Test: a subsurface soil test at the depth of a proposed absorption system or similar
component of an individual sewage disposal system to determine the permeability of the soil,the results of
which are normally expressed as the length of time in which one inch of water is absorbed.
241 Permeability: the property of a material which permits movement of water through the material.
2.42 Permit:a permit for the construction or alteration,installation and use or for the repair of an individual
sewage disposal system.
2.43 Person: individual, partnership, firm, corporation, association or other legal entity and also the state,
any political subdivision thereof or other governmental entity.
2.44 Plot Plan:an accurate drawing or map indicating the dimensions, acreage, and locationof property
lines, buildings, wells, individual sewage disposal systems, water courses, geographical features and other
pertinent information as required.
2.45 Privy: a 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 animals.
2.46 Registered Professional Engineer: an engineer licensed in accordance with 12-25-11 CRS.
2.47 Send Filter. a subsurface system which utilizes filtration or absorption or both, which contains an
intermediate layer of sand as filter material.2.48 Se Bed: a type of soil absorption system dependent upon suitable-soil at a depth greater than
that of an absorption.trench or bed and designed on the-basis of sidewall area. ___
•
2.49 Seep It: a type,of soil.absorption system dependent upon suitable soil at a depth greater than
that of an absorption trench or bed, and designed on-the basis of a sidewall area.
2.50 Sept ige: the liquid and solid contents of a primary treatment facility.
•
2.51 Seffpptic Tank: a watertight accessible, covered receptacle designed and constructed to receive
sewasolids gthrough rom aa period r of retenr. tion arle nd allow s from the clarified f liquids to dto dischest arge to other anic matter and
treatment digested
sifor
final disposal.
2.52 Serial Distribution: an arrangement of absorption trenches, seepage pits or seepage beds so that
effluent is retained in each successive component before flowing into the succeeding component.
2.53 Sewage: a combination of liquid wastes which may include chemicals,house wastes. human excreta.
animal or vegetable matter in suspension or solution,and other solids in suspension or solution,and which is .
discharged from a dwelling, building or other establishment.
• 2.54 Sewage Treatment Works: a system or facility for treating, neutralizing, stabilizing of sewage,which
system or facility has a design capacity to receive more than 2.000 gallons of sewage per day,the disposal
of which is by-means other than s subsurface absorption system. The term "sewage treatment works"
includes appurtenances such as.interceptors, collection lines, outfall and outlet sewers,'pumping stations.
and related equipment.
•
2.55 Site Evaluation: the testing of soils and examination of the location of a proposed I.S.D.S. to
determine the presence of,and limitations imposed by,the field percolation rate,limiting zone(s),slope,and
pertinent ground features; as performed by a competent technician or registered professional engineer.
2.56 Soil Horizon: a distinct layer of soil, gravel, cobbles, or bedrock, separately or in combination,
approximately parallel to the soil surface with characteristics produced by soil-forming or ger' -.Ic
processes. _
2.57 Soil profile:the collection of all-soil horizons and bedrock,from,the surface of the ground to a depth
of eight (8)-feet or to bedrock, whichever is less,-as exposed in a test.pit or boring log.
2.58 Stabilization Pond:a reservoir or diked land which receives aeration plant effluent for final treatment
or evaporation.
2.59 State Waters:any and all surface and subsurface waters which are contained in or flow in-or through
this state, except waters in_sewage systems, waters in.treatment works of disposal systems, waters in
potable water distribution systems and all waters withdrawn for use,until all uses and treatment have been
completed.
2.80 Sukable Soil:a soil which will effectively filter effluent by removal of organisms and suspended solids
before-the effluent.reaches any highly permeable earth such as joints in bedrock;-.gravels or very coarse
soils and which meets percolation test requirements and has a vertical thickness of_atleast four feet
beneath the bottom of the-proposed absorption trench or bed.
2.61 Systems CI - person engaged in and who holds himself out as a specialist in the cleaning and
pumping of sewage disposal systems and removal of the residues deposited ie. the operation thereof.
2.62 Systems Contractor- a person engaged in and who holds himself out as a specialist in the
installation;renovation, and repair of sewage disposal systems.
2.63 Uniformity Coefficient:the quotient of the grain size that is 40%coarser by weight than itself divided
by the grain size which is 90% coarser (effectivee-size) by weight than itself.
2.64 Vault: a water-tight, covered receptacle which is designed to receive and store sewage and is
-accessible for the periodic removal of its contents. •
2.65 Wastewater Pond: a designed pond .which receives exclusively wastewater from a first r
treatment unit and which provides an additional degree of treatment.
2.66 Water Quality Control Commission: the Commission created by 25-8-201, CRS.
SECTION 3.3 A(10) Is amended to read as:follows: '
10. Street or road address of the property. -
SECTION 3.3 B is repealed and re-enacted to-read as follows:
B. The maximum portion of the lot or building site that can be used-for I.S.D.S. shall be twenty-five (25)
percent unless a waiver has been obtained and approved by the Board of Health for experimental or water
conservation methods.
SECTION 3.3 C(4) is-repealed and re-enacted to read as follows:
-4.Any addition to a-structure which will or'ls likely to result in increased sewage flow town existing system
shall require approval by the Department and may require expansion of_the individual sewage disposal
system or parts thereof,
SECTION 3.4 D. is repealed and re-enacted-to read as follows: - '
D.The-determination of the suitability of:the site and of the proposed design based upon the land use and
population density in the area; the use to which the property Is to. be put; the size of the lot; depth'
verification of the ground water table;suitable soil,limiting zone(s);and depth to-bedrock;the location of the
disposal system with reference to walls,stains,lake,ditches,structures,and other geographical features
SECTION 3.10 is repealed and reenacted to read aefollows:
'
.... ,. . ., an sta.
•
3.10 If-upon final Inspection of the system,the Health Officer finds it Installed In accordance with these
regulations and the permit, the Health Officer Main Issue final approval for the completed system. If the
system has bole designed by or constructed under the supervision of a Registered Professional Engineer,
the Department abet',require that said engineer shaft at"thistime certify,in wilting to the Department,that
construction and Installation of the system has been completed in accordance with the terms of the permit
and this regulation.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 falls•to comply with this
regulation,approval shall be withheld.Written notice of deficiencies causing the disapproval shall be given
the Systems Contractor. Another inspection shall be made upon notification from the Systems Contractor
that the deficiencies have been corrected and the system brought into compliance with this regulation.
SECTION 3.17 C is repealed and re-enacted to,read as follows:
C.No individual sewage disposal system presently in use which does not comply with the provisions of this
regulation regarding minimum separation between limiting zone(s)and the bottom of-an absorption system.
Shall be permitted to remain in use without compliance with this regulation.
SECTION 3.22 is repealed and re-enacted to read as follows:
3.22 Regulations of Systems Cleanest
A. No person shall engage in the cleaning of sewage disposal systems or the transportation of septage to
a disposal site unless he holds a valid Systems Cleaner License. Employees of a validly licensed Systems
^.leaner shall not be required to be licensed.The initial fee for a Systems Cleaner License shall be as set by
)(aerate ordinance by the Board of Weld County Commissioners.Licenses shall expire on December 31 of
ach year and an annual renewal fee, as set by separate ordinance 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 new license upon reapplication.
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 septage 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.A license holder shall spillage •
trsnebortati n . and that his aemploye nt Insure
es a enot subjectedo undue health hazardsa will occur during
3. A licensed holder shall dispose- of the collected septage only by the following methods.
a By disposal in a muntsipal sewage treatment collection system by agreement and approval of the plant
manager or responsible party.
b.By disposal at the site designated and recommended by the Board of Health and approved by the Weld
County Board of Commissioners. ,
a By land application if applied in compliance with all of the following requirements.
1.The licensed systems cleaner must make arrangements with the land owner to insure that all septage is
incorporated into the soil by plowing or shaking within twelve (12) hours of the time of application.
2.The licensed systems cleaner must make arrangements with the land owner or farm manager to insure
thst food chain crops shall not be grown within eighteen (18) months of the last application of septage.
Land application and subsequent tillage shall not conflict with regulations regarding the plowing of
fragile grasslands.
4. Site requirements for land application.
a. Surface slope shall be 0 to 8 percent.
b Septage shall not be applied in drainage,reas within one mile upstream of direct diversion of surface
water for public water supplies.
c. Septage shall not be applied within 200 feet of surface water or an existing stream bed including
perennial or intermittent streams.
d Septage shall not be applied within 100 feet of a domestic wale-supply well.
e.Protection of groundwater—the seasonal high ground water table shall not be within five(51 feet of the
surface of the land.
i
5. The licensed systems cleaner shall provide the Department a list of the legal descriptions of all land
I application sites utilized for disposal. this-shall be provided monthly
6. Prior renewal
a B,c0 or these Health
egulaOfficer may require the applicant u:
•
demongtrate adequate knowledge of 3.22 A
fir.Prior t9rthe issuance of or renewal of a license, the Health Officer may require the applicant to
demonstrate adequate knowledge of 3.17 A, B, C.
Revesehonaof a Systems'tgieeners tneense"^ r" • r .
1. The_Drocedures as described in 3.21 (C) shall be followed toi,the revocation of a h,ense
TABLE II
ggP1 m 2g$y P rn N T
a_.w
n vo> O ,able of Minimum Horizontal Distances in F. Between
...DI m n<-1m- O Q Components_of a Sewage Disposal System and Pertinent Ground Features ^1
Z V x o
iaf mgma. Z
maw e£oPn E. . . ` e r
z_.3 ma •
;o' a—°--a ; G B r4
• mam{°zm
S . g0 GI-OS a CS oc : >
gS c fin m g n trE
gtrtrr ^p°zm m 'r_ n ' "o cn
pb m- r, ` n n ..
j03' co .a.-3a n o o n y� n o. Ca a
.ai l mmaa2'0w 7 n O no
co o Y 2 ea S , GQ V..
aa7 r1Mlmmom b n < R C a _ I f 0
m'4°
'J a+ �S��0 a n 7 !" N
aaz a3 R _ ; b
-a-- . aaa-1 I a n 'c o
Og aa.— a co='==a t a S C S-
yringa.,Mells or Suction Lines I 50 50 50 60 60 a 100 100 100' cr
3 O a a e m n PotaCistern Mater Supply Lines I 25 25 1 15 25 25 25 25 25 I v, v
a s`ffi: N cj. m 3 w Dselliny or Occupied Building 0 Se 115 15 15 15 15 20 —
a), 0.4‘.9,'"a0
P_3m Property Linde 0 l0D 10 10 50 10 10 10 1 O
(1=m a. O Subsoil Drain. 10c 10c 110 10 10 25 25 - 25du
—ICU AS—adg -p ykes and Ponds 50c SOc 25 25f 25f 25 25 100 n ^
5m npp'2'm• _ooOa E Intermittent streaas1dl.Streams —
0R,r1.0r�^m0 m or Mater Courses.irrigation m C'
Y y o 3 a m o≥,<2 Ditch III ly1 Snc 5oc '75 100f 1001 100 100 1006 P b Swale or Bully lei 10cl 1Oc 10 10 00 15 15 25
a
ome O mil C ). C n
-
n mm o .
ma - D'wmmm a ? r
yob- 03mmm. n 1. •.line• •. • 1....n which a,.i.. . ......nee o- 0
?1 i.r gmaGba w.. n�. • .... net ..d. .n HD., u..... . .<•..a... .u.. a
=j Poe ? odor mo.n.l..,...t diet
.r...�...u.w,toy t.1t...u••.• n.lq.`el 4. ..1. Cully I. t ..1.. shallow +.vV. .. e tarries ue• — 0 —
O�I p .1.. . r. 1 d .,en.n � a .e.d. . ..0 .u.°n . •' ti. C
5 n .aia P S m I<• ....r..... and.•...q.e..0 of cm.......ell.ea.... E
3=1e a ;11,m ro Ca ......... . ... .u.ny°.n.a...n.0...<.rrb'ln uulrr.�i L •The L.p< n ul .u.. a 1.. r distancero. 1.111 lin r .. le ••
—n T�o -] rb.a • M • n 1..un<...ean l°.tl.e• ...•).... . 1..w1 <ren.Luul.n. -
!,,a.:1
mm Egg'
03O. 1. + uu•n apply.Ym.(.Lunt elarM<. to mot ..<.v.• a ..r .u.. •elitism. .n s.Y ` •a
n�. Q^o> w ew.eue4...A r........r..yls, ..... lrtwue.ditch l.nr.la nine ..rveu[ .ne .
B ma Po.c < °. ... .n.n. . t •.. ..ad oat .... .u.e . .r he ester..ui .. the
C 53&12E0 tu..mw way to ratal4e where rlrl.na. r ...a el e.2uclw 'awe time.
4m Or a.arma' eight (8) bn u• • I .auen un nth 1.r en loa <.. of •..y. u.. —
'a».C. D040aam3 ..e lloo ire. .
n Ja3 a
r ..Aar. •
Breeze, Nov. 28, 1985 — 17
SECTION 4.4 is repealed and re-enacted to reed as follows:
Soil Profile:A test pit or trench for the examination of the soil profile must be provided to a depth of eight
(8) feet or to bedrock, whichever is less, to determine conformance with 4.6 of these regulations.
A.The test pit shalt have minimum horizontal dimensions of three(3)feet in width and six(6)feet in length.
B.To allow entry and exit,at least one wall of the test pit shall have a maximum slope of forthy-five(45)`
degrees from horizontal, or a ladder must be provided.
SECTION 4.6 is repealed and re-enacted to read as follows:
A Suitable Soil Shalt Meet the Collecting Criteria: •
A.A minimum depth of four(4)feet between the bottom of the proposed absorption field and any limiting
zone(s).B. Has designed as determined field
percolationhate of bete ween five
to (5)tmlinutes per inch erse eand 60 minutes per inch or ent by other approved soil tests.
C. Acts as an effective filter within its depth for the removal of pathogenic organisms.
SECTION 5.2 B is repealed and re-enacted to read as follows: -B.The building sewer to septic tank shall be laid with a minimum fall of one-eight('/.)inch per foot(1/4 inch
fall per foot is recommended). Bends in the building sewer shall be limited to.forty-five(45)degree ells,or
long sweep quarter bend.The building Sewer installation shall meet all of the requirements of the Colorado
Technical Plumbing Code, 1972-Revised,or such local Code as may be in force.The inlet and outlet pipes
shall be grouted and sealed with waterproof materials.
SECTION 5.2 C is repealed and re-enacted to read as follows:
G. Backfilling around a septic tank shall be accomplished in a manner to prevent settlement and avoid
undue strain on the tank and the pipes entering and leaving the tank Cast-iron pipe ora minimum of ASTM
Standard 3034,,PVC SDR 35, or Schedule 40 PVC shall be used for the building sewer and for the septic
tank to the head of the leachfield and shall be laid with a minimum fall of one-eight (Vs) Inch per foot.
SECTION 5.4 B(2) is repealed and re-enacted to read as follows: x
2. Where the ground slope is in excess of 25% in the area of the proposed absorption system.
SECTION 5.4 C(5- & 6) are amended to read as follows:
•
5. The bottom of the trench or bed and distribution lines shall be level.
6. The absorption field area shall be protected as to prevent vehicular and livetock traffic.
SECTION 5.4 D(5) is repealed and re-enacted to read as follows:
5. Outlet lines from the distribution box to the laterals shall be of solid wall pipe for a minimum of five(5)
feet.
SECTION 5.4 G is amended to read as follows:
G. The minimum horizontal distanse required from cut banks and fill areas to I.S.D.S. components
discharging effluent into or onto the surrounding soil shall be four(4)times the height of the bank,measured
from the top edge of the bank (See diagram).
4h --�
lc__.._
ti l Start trench/bed—J
SECTION 5 5 A isrepealed and reenacted to read as follows.
55 Absorption Trenches -
A At least two trenches of near equal length shall be constructed with a length not exceeding 100 feeba
width not exceeding three(3) feet. and a depth not exceeding three(3)feet to the bottom of the excavated
trench horn ground level existing at the Site Evaluation. Only one, trench will be required if the system
required to'al area does not exceed 200 square feet.There shall be a reinimum(horizontal measurement)of
sir 161 feet of undisturbed earth between adjacent trenches. Any dimensional change from these
specifications require approval from the Health Officer.A disposal line shall be provided for each trench and
shall be surrounded by clean,washed,graded gravel or rock or similar aggregate.The material may range in
size from three-fourths 3.41 inch to two and a halt(29)inches.The material shall extend from at least two(2)
inches shove the top of the pipe, level across the trench,to at least six(6) inches below the bottom of the
pipe The top of the gravel shall be covered with untreated building paper, a two(2) inch layer of hay or
straw or a similar pervious material to prevent the gravel from becoming clogged by the earth backfill. an
impervious covering shalt not be used. as this interferes with evapotranspiration 9g the surfacro ,ere shall
he at least twelve (121 inches of backfill,placed oyeryrhe (rencewhich P P 'a4e
water from the disposal area. No trees or shrub 5I btaced eraser t an six 6) feet tot a ire_nch.
The bottom-of the trench shall be excavated level.four(4)foot depth'of suitable sod below the bottom of the
trench is required Machine tamping. rolling or hydraulic compaction of final cover shall not be permitted,
however hand tamping may be allowed where necessary to stablilize the soil to prevent erosion or the
intrusion of extraneous water A distribution box snail be included in the absorption trench system,and shall
meet requirements of subsection 5.4 D.Trenches shall follow the ground contour surface so that variations
in trench depth shall be. minimized.
B' Perforated plastic distribution lines of three(3)or lour(4)inches diameter shall be fitted with tight joints
and the perforations shall be laid such that an even distribution of effluent over the trench system will occur.
te each
perforated
each pipe ow segment
of perforations g allte so pot a placed 't effluent will be equally dispersed downward into
the gravel
SECTION 56 A is repealed and re-enacted to read as follows: -
b6 Seepafm Beds
A Seepage beds shall be constructed with a length not exceeding 100 feet,a width greater than three(3) •
feet and depth not exceeding three(3)feet to the bottom of the excavated bed from ground level existing at
the Site Evaluation Any dimensional change from these specifications requires approval from the Health
rock or other similar l inch material shall of tbe distributed eevenlyto yo y and level ov a halt er th1ench clean,ent re bed,with above edistrib distribution
set at a cover ofduntrea untreated building paper.a two(2) inch layer) inChes of lbelow
sttraw,or a siwo milar perviou inches ofs material gravel
shallllabe placed
on top of the gravel.After final inspection,backfill shall be placed over the bed to minimum depth of twelve.
case ofhan bovel grloundesystem,such asbe dat mounded system,an impervous o promote drainage rnoff awaY fbe brom erm shall be constructed to '
closer thanasix(6)feet from fhessystem A foure e of(4)foot depthption of suitald. No ble soil srees or shrubs shall below the bottom of be bed is
required. Machine tamping, rolling or hydraulic compaction of final cover shall not be permitthd. However,
hand tamping may be allowed where necessary to stabilize the soil to prevent erosion or the intrusion of
extraneous water.
SECTION 6.6 C is repealed and re-enacted to read as follows:
peC.The rmitted totdrive hoverr the matrixor the liner.with care The surface of the mo that the liner is not atrix perforated.
be convex so be provided with
as to permit not be
run-
offru-
sod,lorinwaer rawith l grass dc to over, ora with hany e rother llplansence ospecified bVer it.They he designer and shallllilbe maintained as
designed. The bed area shall be protected as to prevent vehicular, pedestrian, and livestock travel.
SECTION- 7.2 is amended to include the following as the last sentence in the paragraph.
Metal or coated metal vaults are prohibited.
APPENDIX 2 is.repealed and re-enacted to read as follows:
•
NAMES AND SIZE LIMITS OF CLASSES ACCORDING.TO SIX PRACTICAL-SIZE
SYSTEMS
r r •_I all ..
•
SKIFM I Cie [ease
1.VS 0ntav el Sara.Coe taervrn C,nrfelt:.w.a•• Cowes'
{IM a«4 ea aas •4 Yraar Mistimed...ad on Pie ewes el tde dense'
Mfif4VMf11ti41
o0•11.•el me n•n41 I
Clae—� 'I Mu✓•vm CuYfe ae.nuera
J,♦•neaten Aiserav ion_ Sill Find Semi Coarse sane l{rear I Yrnai
s1 Suv n:p...+e CmrA I no,:y
On4«f
��C4Y^
M,and Csane qu•tl
J law,n SNate for - Slit Fine sand and ,
law,me Meiv'Or
t«4:I i hole or
a.w• rwwrn I I ylrler•1 1n{•M• Mrnxrmr Inn.. I rebblef l tenon
•
Clay Sat ItsMlfaro • •rI l.Mr 4ran.ne•
ind I
Ivete
v«i *Ws' tine war teen.stases Co wes
Fine Me4v an/ 1
a S.Si OaMnfwent e{ Cr•e SMt aM ,fasa an/Yalu! 1
apKMrrn "" MI
tent sand
Cn•..
LL
alM«ndl4ndl Setmr• on Sin !W«nd
.i Sail Usenet 200
. . ....1 }o :o
000o aaor.
O.ot e.}
h•rwe A«nn«.•n•n
• Preferred System
SOURCE: EPA Designed Manual for Onsite Wastewater Treatment & Disposal-Systems
-APPENDIX 2-
Hello