HomeMy WebLinkAbout971215.tiffRESOLUTION
RE: ACTION OF BOARD OF COUNTY COMMISSIONERS CONCERNING SITE
APPLICATION OF TOWN OF AULT AND AUTHORIZE CHAIR TO SIGN
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 has received a site application from the Town of Ault, c/o
Ketterling, Butherus and Norton Engineers, 820 8th Street, Greeley, Colorado 80631,
concerning minor improvements to its wastewater treatment plant located on the following
described parcel of land, to -wit:
NW% SW% of Section 13, Township 7 North, Range 66
West of the 6th P.M., Weld County, Colorado
WHEREAS, site application world not normally be required for the minor improvements
to improve operations and aid treatment efficiency; however, records on file at the Colorado
Department of Public Health and Environment indicate a site application was never conducted
for this facility, and
WHEREAS, the regulations for site applications for improvements to a wastewater
treatment plant require review of the site application by the Board of County Commissioners,
and further, that various local and state agencies be given the opportunity to review and
comment on said revised site application, and
WHEREAS, the site application from the Town of Ault was submitted to the Board of
County Commissioners of Weld County for review and comment, a copy of said application
being attached hereto and incorporated herein by reference, and
WHEREAS, after study and review, the Board finds that it is in the best interest of Weld
County to recommend approval of said application for the following reasons:
1. The improvements will enrich operations and aid treatment efficiency.
2. The North Front Range Water Quality Planning Association has preliminarily
reviewed the site application, has no conflict with it, and has scheduled it to be
considered by the 208 Water Committee on June 19, 1997.
3. The Town of Ault supports the proposed site application.
971215
PL0079
SITE APPLICATION - TOWN OF AULT
PAGE 2
4. The request complies with the Weld County Comprehensive Plan. The request
proposes improvements to an existing sewage treatment facility which services
the incorporated municipality of Ault.
NOW, THEREFORE, BE IT RESOLVED by the Board of County Commissioners of
Weld County, Colorado, that the site application submitted by the Town of Ault be, and hereby
is, recommended favorably to the Colorado Department of Public Health and Environment.
BE IT FURTHER RESOLVED by the Board that the Chair be, and hereby is, authorized
to sign said site application.
The above and foregoing Resolution was, on motion duly made and seconded, adopted
by the following vote on the 25th day of June, A.D., 1997.
eputy Clerk : R_ =oard
BOARD OF COUNTY COMMISSIONERS
WELDNTY, 7ORADO
Baxter, Chair
Dale K. Hall
EXCUSED
Barbara J. Kirkmeyr
em
ebster
971215
PL0079
COLORADO DEPARTMENT OF HEALTH
Water Quality Control Division
4210 East 11th Avenue •
Denver, Colorado 80220
APPLICATION FOR SITE APPROVAL FOR CONSTRUCTION OR EXPANSION OF:
A) DOMESTIC WASTEWATER TREATMENT WORKS (INCLUDING TREATMENT PLANTS,
OUTFALL:SEWERS, AND LIFT STATIONS) OVER 2,000 GPD CAPACITY.
B) INTERCEPTORS (IF REQUIRED BY C.R.S. 25-8-702 (3))
APPLICANT:
ADDRESS:
Town of Ault, Colorado
P.O. Box 98 Ault, CO, 80610
PHONE: (970) 834-2844
Consulting Engineer's Name and Address: Ketterling, Butherus & Norton Engineers
820 8th Street Greeley, CO, 80631
PHONE: (970) 395-9880
A. Summary of information regarding new sewage treatment plant:
1. Proposed Location: (Legal Description) NW 1/4, SW 1/4, Section _
Township 7N , Range 66W
13
Weld County.
2. Type and capacity of treatment facility proposed: Processes Used Primary Treatment
Lagoon followed by rapid infiltration
Hydraulic 148,250 Organic 279
gal/day
Present PE 1,260 Design PE 2,003
3. Location of facility:
Attach a map of the
(a) 5 -mile radius:
(b) 1 -mile radius:
4. Effluent disposal:
Subsurface disposal _
Evaporation
lbs. BOD5/day
% Domestic 90 X Industrial 10
area which includes the following:
all sewage treatment plants, lift stations, and
water supply intakes. See Exhibit 6
habitable buildings, location of potable water
an approximate indication of the topography.
Surface discharge to watercourse
XX
Land _
Other
domestic
wells, and
See Echibit 7
State water quality classification of receiving watercourse(s) N.A.
Proposed Effluent Limitations developed in conjunction with Planning and Standards
Section, WQCD: BOD5 30/45 mg/1 SS Total
Report mg/l Pecal Coliform 1 /100 ml
Total Residual Chlorine N.A. mg/1 Ammonia N.A. Chlorides 250mgi
5. Will a State or Federal grant be sought to finance any on/1 this pr ec ? ?50mgi
portion of this project?
6. Present zoning of site area? Agricultural
Zoning with a 1 -mile radius of site? See Exhibit 8
7. What is the distance downstream from the discharge to the nearest domestic water
supply intake?
—, (Name.of Supply)— -
No
(Address of Supply)
What is the distance downstream from the discharge to the nearest other point of
diversion?
(Name of User)
(Address of User)
-1-
WQCD-3 (Revised 8-83)
971215
8. Who has the responsibility for operating the proposed facility?
Town of Ault
9. Who owns the land upon which the facility will be constructed?
Town of Ault
(Please attach copies of the document creating authority in the applicant to
construct the proposed facility at this site.)
10. Estimated project cost: $97,000
Who is financially responsible for the construction and operation of the facility?
Town of Ault
11. Names and addresses of all water and/or sanitation districts within 5 miles
downstream of proposed wastewater treatment facility site.
North Wpld County Water District, Town of Eaton, Town of Ault
(Attach a separate sheet of paper if necessary.)
12: Is the facility in a 100 year flood plain or other natural hazard area?
If so, what precautions are being taken?
No
Has the flood plain been designated by the Colorado Water Conservation Board,
Department of Natural Resources or other Agency?
If so, what is that designation?
(Agency Name)
13. Please include all additional factors that might help the Water Quality Control
Division make an informed decision on your application for site approval.
This application is for minor improvements to an existing plant
as explained in the enclosed engineering report.
B. Information regarding lift stations:
1. The proposed lift station when fully developed will generate the following additional
load: Peak Hydraulic (MGD) P.E. to be served
2. Is the site located in a 100 year flood plain?
If yes, on a separate sheet of paper describe the protective measures to be taken.
3. Describe emergency system in case of station and/or power failure.
4. Name and address of facility providing treatment:
5. The proposed lift station when fully developed will increase the loading of the
treatment plant to % of hydraulic and % of organic capacity and
agrees to treat this wastewater? Yes
(Treatment Ageney)
Date Signature andTitle
No
WQCD-3 (Revised 8-83)
971215
C. If the facility will be located on or adjacent to a site that is owned or managed by a
Federal or State agency, send the agency a copy of this application.
D. Recommendation of governmental authorities:
Please address the following issues in your recommendation decision. Are the proposed
facilities consistent with the comprehensive plan and any other plans for the area,
including the 201 Facility Plan or 208 Water Quality Management Plan, as they affect wate:
quality? If you have any further comments or questions, please call 320-8333, Extension
5272.
1.
Date
Recommend Recommend No
Approval /Disapproval Comm enntt Signature of Representative
2. fl'¢142
3.
4. i_
5.
6.
7.
Manag ent AgencAr y 1.2.1C041
/jam
' ocal G
site is
miles)
vernment: Cities or Towns (If
inside boundary or within three
and Sanitation Districts.
Board County Co esiioo ere
11 Health Authority
City/County Planning Authority
Council of Governments/Regional Planning
State Geologist
(For lift stations, the signature of the State Geologist is not required. Applications for
treatment plants require all signatures.)
I certify that I am familiar with the requirements of the "Regulations for Site Applications
?or Domestic Wastewater Treatment Works," and have posted the site in accordance with the
•egulations. An engineering report, as described by the regulations, has been prepared and is
nclosed.
DATE z Met -L 97
Signature Wi Applicant TYPED NAME
-3-
WQCD-3 (Revised 8-83)
9'7121
ATTACHMENT TO SITE APPLICATION
In accordance with C.R.S. 1981, 25-8-702 (2)(a), (b), and (c), and the "Regulations for Site
Applications for Domestic Wastewater Treatment Works", the Water Quality Control Division musi
determine that each site location is consistent with the longrange, comprehensive planning fo)
the area in which it is to be located, that the plant on the proposed site will be managed to
minimize the potential adverse impacts on water quality, and must encourage the consolidation
of wastewater treatment works whenever feasible.
In making this determination, the Division requires each applicant for a site approval for a
domestic wastewater treatment works to supply an engineering report describing the project anc
showing the applicant's capabilities to manage and operate the faility over the life of the
project to determine the potential adverse impacts on water quality. The report shall be
considered the culmination of the planning process and as a minimum shall address the
following:
Service area definition including existing population and population -projections,
flow/loading projections, and relationship to other water and wastewater treatment plants
in the area.
Proposed effluent limitations as developed in coordination with the Planning and Standards
Section of the Division. (Allow minimum four weeks processing time.)
Analysis of existing facilities including performance of those facilities.
Analysis of treatment alternatives considered.
Flood plain and natural hazard analysis.
Detailed description of selected alternatives including legal description of the site,
treatment system description, design capacities, and operational staffing needs.
Legal arrangements showing control of site for the project life.
Institutional arrangements such as contract and/or covenant terms for all users which will
be finalized to accomplished acceptable waste treatment.
Management capabilities for controlling the wastewater throughout and treatment within the
capacity limitations of the proposed treatment works, i.e., user contracts, operating
agreements, pretreatment requirements.
Financial system which has been developed to provide for necessary capital and continued
operation, maintenance, and replacement through the life of the project. This would
include, for example, anticipated fee structure.
Implementation plan and schedule including estimated construction time and estimated
start-up date.
)epending on the proposed project, some of the above items may not be applicable to address.
:n such cases, simply indicate on the application form the non applicability of those.
971215
WOOD -3 (Revised 8-83) •
arig
Wilk
COLORADO
NAME: KBN Engineers on behalf of
DATE: June 25, 1997
LEGAL DESCRIPTION: NW 1/4, SW 1/4, Section 13, Township 7 North, Range 66 West.
The site is located within the Town limits of Ault.
REQUEST: Site application for minor improvements to its wastewater treatment plant to
improve operations and to aid treatment efficiency. Under normal circumstances
a site application would not be required, however, records on file at the Colorado
Department of Public Health and Environment indicate that a site application was
never conducted for this facility.
LOCATION: The facility is located adjacent to WCR 35 between WCR's 80 and 82.
THE HEALTH DEPARTMENT STAFF RECOMMENDS THAT THIS REQUEST BE
APPROVED FOR THE FOLLOWING REASONS:
1) The improvements will enrich operations and aid treatment efficiency.
2) The North Front Range Water Quality Planning Association has preliminarily reviewed
the site application, has no conflict with it, and has scheduled it to be considered by the
"208 Committee" on June 19, 1997.
3) The Town of Ault supports the proposed site application.
4) The request complies with the Weld County Comprehensive Plan. The request proposes
improvements to an existing sewage treatment facility which services the incorporated
municipality of Ault.
tj\669
971215
ENGINEERS
May 5, 1997
4 ; 1997 •
Weld County Commissioners & Planning Commission
915 10th Street
Greeley, CO 80631
RE: Town of Ault Wastewater Treatment Plant Improvements, Ault, Colorado
Dear Ladies and Gentlemen,
The Town of Ault is planning minor improvements to its wastewater treatment plant to improve
operations and to aid treatment efficiency. As a result of these proposed improvements, the
Colorado Department of Health is requesting that the town submit an application for site
approval.
Included with this letter please find the application and engineering report. As part of the
process you are requested to review the enclosed information and provide any comments you
may have. Your comments, along with appropriate signature on page 3 of the application, should
be returned to Ketterling, Butherus and Norton Engineers no later than July 7, 1997. If your
agency has no comments we would appreciate you signing and returning the site approval
application
Should you have any questions, please feel free to call me at (970) 395-9880.
Thank you for your time and consideration.
Sincerely,
Steven A. Butherus, PE
971215
INTRODUCTION
The Town of Ault, Colorado is planning minor improvements to its wastewater treatment plant to
correct operational problems and aid treatment efficiency. Since the town has never applied for
site approval, the Colorado Department of Health has requested that they submit a site
application permit.
This report will provide information necessary to fulfill the engineering report criteria necessary
for the site application. Each item required, as described in Section 2.2.4.(3)(c) of the Procedural
Regulations For Site Applications For Domestic Treatment Works will be addressed in this
report.
Section 2.2.4.(3)(c)(i)
The service area boundary for the town is shown on Exhibit 1 included with this report. The
current population of Ault is approximately 1,260 people. A population projection by KLH
Engineering Group in a 1995 report projected a population of 1,371 people in the year 2015. A
copy of the graph indicating this projection is included with this report and is labeled Exhibit 2.
Current flows to the plant average 93,000 gallon per day. This equates to 74 gallons per capita
per day. The plant capacity is estimated at 148,250 gallons per day. Current BOD5 loading
averaged 175 lbs/day in 1996 and projected loadings are 279 lbs/day at design capacity.
The Ault treatment plant is located approximately 1/2 mile south of Highway 14 on Weld County
Road 35. The Town's of Pierce (located approximately four miles north of Ault) and Eaton
(located approximated four miles south of Ault) both have their own treatment plants. These are
the closest treatment facilities to Ault.
Section 2.2.4.(3)(c)(ii)
The Town of Ault is operating its plant under a groundwater discharge permit. The permit
contains compliance limits at two down gradient on -site wells (050B and 050C). The
compliance limitations according the discharge permit at these wells are as follows:
BOD5, mg/1
TSS, mg/I
Total Coliform, no/100 ml
pH, s.u.
Nitrate plus Nitrite, mg/I as N
Chloride, mg/I
Sulfate, mg/1
30/45
Report
1
6.5-8.5
10
250
250
971215
Section 2.2.4.(3)(c)(iii)
Treatment of wastewater from the Town of Ault is accomplished with rapid infiltration land
application preceded by a primary treatment lagoon. This is most likely not what the designer
had in mind, but is how the plant has operated since it was upgraded in the early 1970's. The
existing plant layout is shown on Exhibit 3.
Our review of test results indicates that the plant, as currently operating, is doing an adequate job
of treating the waste stream. As mentioned earlier the town has two on -site compliance wills
down gradient of the infiltration basin. The town also has an on -site up gradient will (050A).
Nitrate (N) plus Nitrite (N) levels in the down gradient wells have been consistently below the up
gradient well. To further substantiate this information the town has been monitoring one off -site
up gradient well (Hoffner) and two off -site down gradient wells (Miller & Dickens) on a
quarterly basis for nearly two years. These off -site wells have been consistently higher in nitrate
levels than the compliance wells. Exhibit 4 included with this report shows the location of the
off -site wells. The town has been able to consistently meet all other compliance limits other than
the allowable 10 mg/1 of nitrates.
Section 2.2.4.(3)(c)(iv)
This is an existing plant and only minor modifications are proposed at this time, so no other
treatment alternatives have been analyzed.
Section 2.2.4.(3)(c)(v)
The plant does not lie within a floodplain and no natural hazard analysis has been completed.
Section 2.2.4.(3)(c)(vi)
As mentioned previously the town is only planning minor modifications to the existing plant.
The headworks to the plant are being re -built in order to remove the grit chamber, imhoff tank,
and sludge storage tank. The grit chamber does not function properly, the imhoff tank is
undersized and in disrepair and the sludge storage tank has not been used in years. In re-
constructing the headworks the piping will be lowered to reduce an existing backwater problem
in the main trunk line to the plant. The only other modifications to the plant will be to split the
infiltration basin to allow flows to be alternated and provide drying and aeration periods. It is
believed this will add longevity to the infiltration basin and possibly increase the permeability of
the basin. The proposed improvements are shown in plan view on Exhibit 5.
Upon completion of the proposed modifications, flow will enter the plant at a junction box.
Slide gates at this box will allow the operator to send flows through a bar screen, a 3 -inch
Parshall flume and then into the primary treatment lagoon. An emergency bypass line will be
constructed from the junction box in case the flume needs to be worked on or some other
problem occurs with the main channel and piping.
The primary treatment lagoon has a capacity of 4.53 million gallons. This provides a detention
time of approximately 50 days at current flow. This facultative lagoon does not contain any
aeration devices.
Effluent from the primary treatment lagoon will flow into one of two rapid infiltration cells. A
diversion box constructed with the proposed improvements will allow the operator to alternate
flow between two infiltration cells. At this time it is anticipated that the cells will be operated
one month on and one month off. This should provide better treatment capabilities through the
soil profile and possibly increase the capacity of the plant.
At this time the capacity of the plant is estimated at 148,250 gallons per day. The town currently
has two part time operators on staff. An operator checks the plant once a day and the town
maintenance staff cleans the bar screen a couple times a day.
The plant is located in the Northwest Quarter (NW 1/4) of the Southwest Quarter (SW 1/4) of
Section 13, Township 7 North, Range 66 West.
Section 2.2.4.(3)(c)(viii)
The Town of Ault is responsible for the collection and treatment of wastewater at their treatment
plant.
Section 2.2.4.(3)(c)(ix)
The town controls substances that should not be discharged into the sewer system and any
requirements for pretreatment are covered in the towns sanitary sewer ordinance. Control of
plant capacity in conjunction with new development is handled by the Board of Trustees in
conjunction with town staff.
Section 2.2.4.(3)(c)(x)
The town has a system in place through ordinance to collect fees from users in order to cover the
costs associated with the operation and maintenance of the system.
Section 2.2.4.(3)(c)(xi)
The current schedule calls for construction to begin in September, 1997 and be completed within
45 days.
971215
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ENGINEERS
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KETTERUNG, BUTHERUS & NORTON
820 8th Street Greeley, Colorado
(970) 395-9880
TOWN OF A U LT
FIVE MILE RADIUS
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