HomeMy WebLinkAbout20061930.tiff Jacobson Helgoth
CONSULTANTS
June 26, 2006
Weld County Commissioners
Weld County
PO Box 758
Greeley, CO 80632
Re: Environmental Assessment
Wastewater Treatment Facility Phase 1B Improvements
Town of Lochbuie, Colorado
JHC Project No. 324-11
Dear Commissioners:
The Town of Lochbuie, Colorado (Town) is in the final planning phase of their
Wastewater Treatment Facility (WWTF) Phase 1B expansion. The Town plans to
finance the WWTF Phase 1B expansion with a combination of existing funds and low-
interest loans through the Colorado Water Resources and Power Development
Authority (CWRPDA). Jacobson Helgoth Consultants, Inc. (JHC) has prepared an
Environmental Assessment (EA) report as well as a Preliminary Engineering Report
(PER).
The purpose of this letter is to request that your organization review and provide a
response regarding any environmental impacts that you may identify for this proposed
project pursuant to the National Environmental Policy Act (NEPA). We are particularly
interested in your comments regarding the impacts on agricultural lands, wetlands,
flora and fauna, floodplains, water quantity and quality, and natural resources the
impacts on development and utilities, public health, economic and social factors, and
land use, including recreation and open space within the project area.
The Lochbuie WWTF currently provides wastewater treatment for the Town of
Lochbuie, portions of the City of Brighton, and other developments in the area. The
existing WWTF is an extended aeration activated sludge plant with a hydraulic capacity
of 1 million gallons per day (MGD) and an organic loading design of 1,920 pounds per
day (lbs/day). Due to projected growth within the service boundary, the Town of
Lochbuie has elected to expand the current capacity of the WWTF. The proposed
expansion will include an expanded headworks facility for preliminary treatment, two
additional aeration basins and an additional digester, a process pump station, a solids
handling facility, and an administration building that will contain a laboratory facility.
6711/111A4 fu a1
7-/0 ,a7e,e56 Cc . ' eM
12640 West Cedar Drive,Suite A, Lakewood,Lolorddo 80228-2005 2006-,�930
e-mail:jhac/Memecom 303-986 0733 FAX 303-986-0956
June 26, 2006
Page Two
The WWTF Phase 1B expansion completes the original Phase 1 design and will have a
hydraulic capacity of 2.0 MGD and an organic loading limit of 3,840 lbs/day.
Enclosed is a copy of the EA report providing a description of the proposed work
involved, the potential environmental impacts, and maps that show project location and
existing service areas.
We request that you advise us of any comments you may have regarding this project,
within 30 days, to enable the Town to proceed with finalizing the funding for this
project and completion of the EA report. Comments can be sent to:
Cindy J. Titus, E.I.T.
Jacobson Helgoth Consultants, Inc.
12640 West Cedar Drive, Suite A
Lakewood, CO 80228-2030
If you have any questions concerning this proposed project or if you require any further
information, please do not hesitate to contact me at (303) 987-0733.
Sincerely,
JACOBSON HELGOTH CONSULTANTS, INC.
Cindy-J.-Titus, E.I.T.
Project Engineer
CJT/ky
Enclosure
DRAFT ENVIRONMENTAL ASSESSMENT
for the
WASTEWATER TREATMENT FACILITY
PHASE 1B EXPANSION
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EJc ) c H B U I E,
TOWN OF LOCHBUIE, COLORADO
JHC Project No. 324-11
June 2006
FOR AGENCY REVIEW
II
Jacobson Helgoth /✓i'A DIAMONDBACK
C O N S U L T A N 1 S ENGINEERING&SURVEYING,INC.
TABLE OF CONTENTS
PAGE
SECTION 1.0- SUMMARY INFORMATION 1
1.1 Project Identification 1
1.2 Contact Person 1
1.3 Abstract 1
1.4 Comment Period 1
SECTION 2.0-PURPOSE AND NEED FOR ACTION 2
SECTION 3.0-PROJECT SUMMARY 2
SECTION 4.0-AFFECTED ENVIRONMENT 3
4.1 Planning Area 3
4.2 Population and Flow Projections 3
SECTION 5.0-ENVIRONMENTAL IMPACTS OF THE PROPOSED PROJECT 4
5.1 Direct and Secondary Impacts 4
5.1.1 Physical Aspects—Topography,Geology,Soils 4
5.1.2 Climate 4
5.1.3 Population 4
5.1.4 Housing,Industrial,and Commercial Development and Utilities 4
5.1.5 Economics and Social Profile 5
5.1.6 Land Use 5
5.1.7 Floodplain Development 5
5.1.8 Wetlands 5
5.1.9 Wild and Scenic Rivers 5
5.1.10 Archeological and Historical Cultural Resources 6
5.1.11 Flora and Fauna 6
5.1.12 Recreation and Open Space 6
5.1.13 Agricultural Lands 6
5.1.14 Air Quality 7
5.1.15 Ground Water and Surface Water Quantity and Quality 7
5.1.16 Public Health 7
5.1.17 Energy 7
5.1.18 Regionalization 7
5.1.19 Public Participation 7
5.1.20 Environmental Laws 7
5.2 Unavoidable Adverse Impacts 8
5.3 Mitigation of Adverse Impacts 8
SECTION 6.0-PUBLIC PARTICIPATION 8
SECTION 7.0-REFERENCE DOCUMENTS 8
SECTION 8.0-AGENCIES CONTACTED 9
Town of Lochbuie,Colorado Environmental Assessment-W WTF Phase 1B Expansion
June 2006 j JHC Project No.324-11
LIST OF FIGURES
FIGURE 4-1-REGIONAL AND SITE LOCATION MAP
FIGURE 4-2- SERVICE AREA MAP
LIST OF APPENDICES
APPENDIX A-ENVIRONMENTAL ASSESSMENT CHECKLIST
APPENDIX B-REQUEST FOR COMMENTS LIST AND SAMPLE LETTER
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase IB Expansion
June 2006 11 JHC Project No.324-11
SECTION 1.0
SUMMARY INFORMATION
1.1 Project Identification
Applicant: Town of Lochbuie, Colorado
Address: 703 Weld County Rd 37
Lochbuie, CO 80603
Project Name: Wastewater Treatment Facility Phase 1B Expansion
1.2 Contact Person
Mr. Mike Hutto,Public Works Director
1.3 Abstract
The existing Wastewater Treatment Facility(WWTF) is an extended aeration activated sludge
mechanical plant with a hydraulic capacity of 1.0 million gallons per day(MGD) and an organic
loading design of 1,920 pounds per day(lbs/day). As the first phase of a multi-phased regional
wastewater treatment facility, the WWTF's modular design allows ease of expansion as required
by growth. Due to rapid growth within the service area boundary, the WWTF is quickly
approaching capacity. The Town of Lochbuie(Town)has elected to double the capacity of the
facility to 2.0 MGD. The proposed expansion will include a permanent influent pump station,
grit removal, doubling of the aeration basin and digester capacities, a permanent process pump
station, a solids handling facility, and an administration building with a laboratory. The total
estimated cost of the expansion$9,900,000. The Town plans to finance the WWTF expansion
with a combination of existing funds and low-interest loans through the Colorado Water
Resources and Power Development Authority(CWRPDA). The Town is not anticipating a
sewer service fee increase to offset costs of the expansion.
1.4 Comment Period
In conformance with the requirements of the National Environmental Policy Act and the
Colorado Environmental Review Process, a Finding of No Significant Impact (FONSI) will be
subject to a 30-day public review period. The Environmental Assessment (EA)will be
distributed to interested persons and agencies for their review. The EA will be available for
public review at the Town's offices:
Town of Lochbuie
703 Weld County Rd 37
Lochbuie, Colorado 80603
and at the Colorado Department of Public Health and Environment(CDPHE):
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Exoansion
June 2006 1 JHC Project No.324-11
Carolyn Schachterle, Project Administrator
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South
Denver, Colorado 80246
Telephone: (303) 693-2000
Any comments received will be given due consideration. Comments should be addressed to
Jacobson Helgoth Consultants, Inc.:
Cindy J. Titus, E.I.T.
Jacobson Helgoth Consultants, Inc.
12640 West Cedar Drive, Suite A
Lakewood, CO 80228
Telephone: (303) 986-0733
Fax: (303) 986-0956
SECTION 2.0
PURPOSE AND NEED FOR ACTION
Prior to the completion of the Town's new mechanical treatment plant in April 2005, aerated
lagoons provided the Town's wastewater treatment. Rapid growth in the area in recent years
prompted Lochbuie to plan for regional wastewater service. The Town chose a three-phased
approach to construction of their new WWTF: Phase 1 treating 1.5 MGD, Phase 2 treating 5.0
MGD, and Phase 3 treating an ultimate capacity of 10 MGD at build-out. During the design of
Phase 1, the existing lagoon system was quickly reaching capacity and, combined with financial
considerations, the Town decided to speed up construction of the new treatment facility by
breaking it into two phases: Phase 1A,treating a capacity of 1.0 MGD with minimal facilities,
and Phase 1B, treating 1.5 MGD with complete facilities. Due to the continued rapid pace of
development, the Town has elected to increase the capacity of the Phase 1B expansion to 2.0
MGD. The wastewater flows to the WWTF have increased significantly from 0.36 MGD to 0.6
MGD since it began operating just over a year ago. At this rate of growth, the WWTF will
exceed its hydraulic capacity of 1.0 MGD within two years. It is imperative that the Phase 1B
expansion begin immediately to avoid exceeding existing plant capacity.
SECTION 3.0
PROJECT SUMMARY
In planning for the new wastewater treatment facility, several alternative site locations and
alternative treatment processes were considered. An analysis of the alternatives is contained in
the Facility Plan for the Lochbuie Wastewater Treatment Facility. The current site was selected
because its location can provide gravity feed from a majority of the service area, its size can
accommodate a 10-MGD facility at build-out, it is capable of providing service to neighboring
communities, if determined desirable. The activated-sludge process was selected as being the
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase IB Expansion
June 2006 2 JHC Project No.324-11
most suitable given the ability to control treatment performance under a range of operating
conditions, as well as for the ease of adding advanced treatment processes such as nitrification,
denitrification and phosphorus removal should they be required in the future.
The WWTF Phase 1B Expansion will include the following components: completion of the
headworks facility with a building to house the existing screening and flow measurement
equipment; a vortex grit unit;permanent influent pumps in a wet well-dry well pump station;
two additional extended aeration basins; an additional aerobic digester; a process pump station to
permanently house return and waste activated sludge pumps; additional blowers for the aeration
system; a solids handling building for dewatering and removal of wasted sludge; and an
administration building that will contain a laboratory. A portion of the$9,900,000 cost of the
Phase 1B expansion includes the increased construction costs of Phase 1A components that were
postponed. Additionally, all of the buildings in Phase 1B are being sized to accommodate
equipment that will be required in Phase 2, to save on future construction costs.
SECTION 4.0
AFFECTED ENVIRONMENT
4.1 Planning Area
Lochbuie is located in Weld County, approximately 40 miles northeast of Denver on Interstate
76,just north of the Weld-Adams County line. Figure 4-1 shows a regional location as well as
the location of the existing WWTF. The Town is currently designated by the North Front Range
Water Quality Planning Association as the regional wastewater service provider for the Beebe
Seep Service Area that includes land from neighboring communities. Figure 4-2 shows the
current service area boundary as provided in the North Front Range Water Quality Planning
Association 208 Areawide Management Plan. A portion of the service area extends into Adams
County, which is part of the Denver Regional Council of Governments (DRCOG)management
area. The DRCOG"Metro Vision 2020 Clean Water Plan"provides additional wastewater
management planning information for this overlapping service area. A memorandum of
understanding has been established between the two planning agencies to address any issues that
may arise in the overlapping area. The defined service area is contained within the Town's
urban growth area, as defined in the Lochbuie Comprehensive Plan.
4.2 Population and Flow Projections
From the 208 Areawide Management Plan 2005 Update, the current and 20-year projected
population, wastewater flow, and organic loading(in pounds of BOD5 per day) are as follows:
Population Wastewater Flows Waste Organic Loading
2005 7,758 0.54 mgd 1,026 lbs/day
2010 17,328 1.2 mgd 2,292 lbs/day
2015 26,898 1.8 mgd 3,558 lbs/day
2020 36,468 2.5 mgd 4,824 lbs/day
2025 46,030 3.2 mgd 6,090 lbs/day
Town of Lochbuie.Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 3 JHC Project No.324-11
SECTION 5.0
ENVIRONMENTAL IMPACTS OF THE PROPOSED PROJECT
5.1 Direct and Secondary Impacts
Construction of the Lochbuie WWTF—Phase 1B Expansion may have direct impacts
from facility construction and secondary and cumulative impacts from future
development within the service area. Secondary impacts are those induced or stimulated
by, or as a result of, the proposed action. These can include cumulative, social and land
use impacts, among others. Cumulative impacts are the collective incremental impacts of
the proposed action regardless of the entity undertaking the action. Cumulative impacts
can result from individually minor but collectively significant actions taking place over a
period of time. From the characteristics of the proposed project, and descriptive elements
of the environmental setting,probable impacts are direct and secondary.
Potential secondary and cumulative impacts to the environment from new development,
such as increased quantity and decreased quality of urban runoff, degradation of wetland
and wildlife habitat, and increased air pollution and noise are likely to affect the planning
area. An environmental assessment checklist was completed for the project to help
determine potential impacts. It is attached in Appendix A. Potential impacts are
described in more detail below.
5.1.1 Physical Aspects -Topography, Geology and Soils
The proposed project will not have a negative effect on the topography, geology,
or soils in the area,nor will any of these aspects affect the construction of the
proposed expansion. All areas of the WWTF expansion site have previously been
disturbed during past improvements to the plant. Portions of the proposed
construction area are currently being used as a miscellaneous storage for the
Town, while the rest is vacant land.
5.1.2 Climate
There are no meteorological constraints that will affect the proposed project. Due
to the cold winter weather, all equipment will be housed indoors to prevent
freezing.
5.1.3 Population
Population growth estimates are provided in Section 4.2. The ultimate service
area to be covered by the WWTF is defined in Section 4.1.
5.1.4 Housing, Industrial and Commercial Development and Utilities
This project will not alter any development plans within the area, nor will any
homes or businesses be displaced. The wastewater service area, as shown in the
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 4 JHC Project No.324-11
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Jacobson Helg PROJ. NO.: TOWN OF LOCHBUIE
DRAWN: CJT 208 AREAWID PLAN
CONSULTANTS324-11 CHECKED:JE LOCHBUIE, COLORADO
FILE NO.: 32411 EA4-2 FIG 4-2
208 Areawide Management Plan Update, is consistent with local growth plans for
the area, as discussed in the Town ofLochbuie Comprehensive Plan.
5.1.5 Economics and Social Profile
All plant expansions will take place on the existing WWTF site. Therefore,no
landowners or property values will be affected due to construction activities.
Odor control measures will be taken on the site, thereby reducing the impact of a
WWTF on nearby landowners.
5.1.6 Land Use
All projected growth is within local land use plans. All expansions to the WWTF
will take place on the existing site, so there are no issues related to the siting of
the facility. New development will take place in previously undeveloped areas;
however, all improvements are within the local growth plans for the area. No
recreational, mining, other industrial or energy developments or properties will be
affected by the project.
5.1.7 Floodplain Development
FEMA floodplain mapping shows no 100-year floodplain at or near the WWTF
site, as shown in Figure 5-1. However, all improvements to the WWTF will be
will be designed and constructed to protect against possible flooding along the
Beebe Seep Canal. Requests for comment will be made to the Colorado Water
Conservation Board,Natural Resources Conservation Service(NRCS), and the
Corps of Engineers regarding the floodplain areas for this project.
5.1.8 Wetlands
The National Wetlands Inventory(NWI)Map, which is presented in Figure 5-2,
shows the wetlands designation in and around the WWTF and the Town. No
wetlands listed on the NWI map should be impacted by this proposed project;
however, this will be closely examined during the design and construction phase
to ensure that any impact is either avoided or mitigated. Developers will need to
work with local authorities to determine if any construction activities in the
service area will be located within wetland areas. The Colorado Division of
Wildlife, the NRCS, the Corps of Engineers, and the U.S. Fish and Wildlife
Service will be contacted for comment regarding the wetlands in the area of the
project.
5.1.9 Wild and Scenic Rivers
There are no wild and scenic rivers located within the planning area.
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 5 JHC Project No.324-11
5.1.10 Cultural Resources (Archeological/Historical)
A review of the National Historic Landmarks Program Database provided by the
National Park Service found no historic landmarks in the area. A review of the
National Register of Historic Places listed no registered historic places in the
planning area.
A search of the Colorado Inventory of Cultural Resources by the office of
Archaeology and Historic Preservation indicates the Hoyt to Terry Street
transmission line, circa 1951, crosses the southernmost tip of the referenced
property. No construction activity will take place within 100 yards of the
transmission line.
5.1.11 Flora and Fauna(including endangered species)
The U.S. Fish and Wildlife Service denotes 10 endangered, threatened, and
candidate species in area of the WWTF. The species include the Least Tern
(Sterna antillarum), Whooping Crane(Gros Americana), Bald Eagle (Haliaeetus
leucocephalus), Piping Plover(Charadrius melodus), Black-Footed Ferret
(Mustela Nigripes), Mexican Spotted Owl(Strix Occidentalis Lucida), Preble's
Meadow Jumping Mouse (Zapus Hudsonius Preblei), Pallid Sturgeon
(Scaphirhynchus Albus), Colorado Butterfly Plant(Gaura Neomexicana Spp.
Coloradensis), and Ute Ladies'-Tresses Orchid(Spiranthes Diluvialis).
The improvements to the plant will all occur on previously disturbed land, and
will therefore have no impact to flora or fauna. Care will be taken to prevent
nuisance species from overtaking areas disturbed by plant construction.
The Colorado Division of Wildlife,the NRCS, and the U.S. Fish and Wildlife
Service will be contacted for comments regarding impacts to flora and fauna
within the service area.
5.1.12 Recreation and Open Space
The project will not have any effect on recreational or open space areas, though
the Bureau of Land Management, the Colorado State Parks,the U.S. Forest
Service will all be contacted for comments related to the possible impacts on
recreational and open space within the planning area.
5.1.13 Agricultural Lands
No Environmentally Significant Agricultural Lands are expected to be within the
service area. A request will be made to the local USDA Service Center for
comments related to agricultural lands.
Town of Lochbuie.Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 6 JHC Project No.324-11
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JacobsonHelgoth PROJ. NO.: 324-11 LOCHBUIEWWTF
CONSULTANTS DRAWN: JAB NW 1/4 SEC 29 T1N R65W
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FILE NO.: 32411 EA5-2 FIGURE 5-2
5.1.14 Air Quality
This project will have minimal effect on air quality. Mitigation measures will be
taken during construction to minimize dust. The new headworks portion of the
plant will be vented to an odor control process to reduce any noxious odors from
the building. No known air quality violations have been registered in the area.
The CDPHE Air Pollution Control Division and the U.S. Environmental
Protection Agency(EPA)Regional Office will be contacted for comment
regarding air quality.
5.1.15 Water Quality and Quantity(Surface/Groundwater)
This project will have no effect on ground water quantity or quality. The flows to
the Beebe Seep Canal will increase with the WWTF expansion, though this will
not impact the canal significantly. The constituents in the effluent being
discharged from the existing WWTF are well below the limits set by CDPHE in
the facility's Discharge Permit. The proposed expansion will allow continued
compliance at higher wastewater plant flows.
5.1.16 Public Health
The proposed project will not have any effect on public health.
5.1.17 Energy
The improvements at the WWTF will involve additional electrical loadings,
however, cost effective energy conservation measures will be implemented in the
design of the expansion.
5.1.18 Regionalization
The site and wastewater treatment system selected for the WWTF enables it to
provide regional service, to include portions of Brighton and the Bromley Park
developments. The site location also would allow for the Town of Hudson to
send its wastewater to the WWTF if desired. The modular design of the plant
allows for phased expansion as the need arises.
5.1.19 Public Participation
This project does not have any public controversy. Additional information
regarding public participation is provided in Section 6.
5.1.20 Environmental Laws
Measures will be taken to conform to applicable environmental laws.
Town of Lochbule.Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 7 JHC Project No.324-11
5.1 Unavoidable Adverse Impacts
There are certain minimal unavoidable adverse impacts related to the construction
activities of the project. These include all impacts typical for a construction project,
including noise and emissions from construction equipment, and temporarily increased
traffic to the site. The total area for construction at the site is approximately seven acres,
and storm water runoff will be mitigated. The construction will likely include the need
for dewatering, and therefore, a Construction Discharge Permit issued by the CDPHE to
discharge the dewatered groundwater will be necessary. The project will require a
commitment of resources from the Town and region including capital,manpower, and
materials. Each of these unavoidable impacts is temporary and will be kept to a
minimum use best construction practices.
One long-term impact will be the increased traffic and noise due to the development of
the ultimate service area. This impact is understood, and has been addressed in the long-
term growth plans of the area.
5.2 Mitigation of Adverse Impacts
This project is being completed in compliance with the 208 Areawide Management Plan
and the Town of Lochbuie Comprehensive Plan.
Care will be taken to minimize any impacts to the environment through the construction
of this project. Should any of the contacted agencies have any concerns, or recommend
any mitigation, we will work with that agency to meet any needs they may have.
SECTION 6.0
PUBLIC PARTICIPATION
A public hearing will be held to introduce this project to the public. Public notice will be
published in the local newspaper a minimum of 30 days before the public hearing. Any
comments made regarding the environmental impacts of the project will be included in the final
Environmental Review Record.
SECTION 7.0
REFERENCE DOCUMENTS
There are several documents that are related to this Environmental Assessment. They are the
Lochbuie Site Application for Expansion of a Wastewater Treatment Facility—Phase 1B, the
Process Design Report for the Lochbuie Regional Wastewater Treatment Facility Phase 1B
Expansion, the Facility Plan for the Lochbuie Wastewater Treatment Facility, the 208 Areawide
Management Plan Update, and the Town of Lochbuie Comprehensive Plan. Copies of each are
Town of Lochbuie.Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 8 JHC Project No.324-11
available for review at the Town's offices and Jacobson Helgoth Consultants, Inc. offices, whose
addresses are given in Section 1.4.
SECTION 8.0
AGENCIES CONTACTED
A letter requesting comments from regulatory agencies that may have an interest in this proposed
project has been sent with a copy of this Environmental Assessment. A 30-day comment period
will be allowed for agencies to respond with comment. Any comments made regarding the
environmental impacts of the project will be included in the final Environmental Review Record.
A list of agencies contacted, and a copy of the letter sent is provided in Appendix B.
Town of Lochbuie,Colorado Environmental Assessment-W WTF Phase 1B Expansion
June 2006 9 JHC Project No.324-11
APPENDIX A
ENVIRONMENTAL ASSESSMENT CHECKLIST
ENVIRONMENTAL ASSESSMENT CHECKLIST
IDENTIFY ALTERNATIVE:
Y= Yes N=No PA =Possible Adverse
1. Physical Aspects - Topography, Geology and Soils
Y_ N X PA a. Are there physical conditions (e.g., steep slopes, shrink-swells
soils, etc.)that might be adversely affected by or might affect
construction of the proposed facilities?
Y_ N X PA b. Are there similar limiting physical conditions in the planning area
that might make development unsuitable?
Y N X PA_ c. Are there any unusual or unique geological features that might be
affected?
Y N X PA_ d. Are there any hazardous areas (slides, faults, etc.) that might affect
construction or development?
Discussion and References:
2. Climate
Y N X PA_ a. Are there any unusual or special meteorological constraints in the
planning area that might result in an air quality problem?
Y N X PA b. Are there any unusual or special meteorological constraints in the
planning area that might affect the feasibility of the proposed
wastewater treatment alternative?
Discussion and References:
3. Population
Y X N PA a. Are the proposed growth rates excessive(exceeding State
projections, greater than 6%per annum for the 20 year planning
period)?
Y_ N X PA_ b. Will additional growth be induced or growth in new areas
encouraged as a result of facilities construction?
Y X N_ PA c. Will the facilities serve areas which are largely undeveloped areas
at present?
Discussion and References: The expansion is in agreement with the Town of Lochbuie
Comprehensive Plan.
Town of Lochbuie.Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 Appendix A-1 JHC Project No.324-11
4. Housing, Industrial and Commercial Development and Utilities
Y N X PA a. Will existing homes or business be displaced as a result of
construction of this property?
Y N X PA b. Will new housing serviced by this facility affect existing facilities,
transportation patterns, environmentally sensitive areas, or be in
special hazard or danger zones?
Y N X PA c. Will new housing create strains on other utilities and services -
policies, power,wastewater treatment facility, schools, hospital
care, etc.?
Discussion and References:
5. Economics and Social Profile
Y N X PA a. Will certain landowners benefit substantially from the
development of land due to distribution line routing or DWTP
location and size?
Y N X PA b. Will the facilities adversely affect land values?
Y N X PA c. Are any poor or disadvantaged groups especially affected by this
project?
Discussion and References:
6. Land Use
Y N X PA a. Will projected growth defeat the purpose of local land use controls
(if any)?
Y N X PA b. Is the location of the WWTP or other facilities incompatible with
local land use plans?
Y_ N X PA_ c. Will inhabited areas be adversely impacted by the project site?
Y X N PA d. Will new development have adverse effects on older existing land
uses(agriculture, forest land, etc.)?
Y N X PA e. Will this project contribute to changes in land use in association
with recreation(skiing,parks, etc.), mining or other large industrial
or energy developments?
Discussion and References: Land within the service area boundary includes planted/cultivated
land and pastures.
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 Appendix A-2 JHC Project No.324-11
7. Floodplain Development
Y N X PA_ a. Does the planning area contain 100-year flood plains?
-If yes-
Y N PA_ b. Will the project be constructed in a 100-year floodplain?
PA c. Will the project serve direct or indirect development in a 100-year
floodplain anywhere in the planning area?
Discussion and References:
8. Wetlands
Y N X PA a. Does the planning area contain wetlands as defined by the U.S.
Fish and Wildlife Service?
-If yes-
Y_ N_ PA b. Will any major part of the project be located on wetlands?
Y N_ PA c. Will the project serve growth and development which will directly
or indirectly affect wetlands?
Discussion and References:
9. Wild and Scenic Rivers
Y N X PA_ a. Does the planning area contain a designated or proposed wild and
scenic river?
-If yes -
Y N_ PA_ b. Will the project be constructed near the river?
Y N_ PA c. Will projected growth and development take place contiguous to or
upstream from the river segment?
Discussion and References:
10. Cultural Resources (Archeological/Historical)
Y X N T PA_ a. Are there any properties (historic, architectural, archeological) in
the planning area which are listed on or eligible for listing on the
National Register of Historic Places?
-If yes-
Y N X PA b. Will the project have direct or indirect adverse impacts on any
listed or eligible property?
Discussion and References: The Hoyt to Terry Street transmission line, circa 1951, crosses the
southernmost tip of the referenced property. No construction activity will take place within 100
yards of the transmission line.
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase I B Expansion
June 2006 Appendix A-3 JHC Project No.324-11
11. Flora and Fauna (including endangered species)
Y X N PA a. Are there any designated threatened or endangered species or their
habitat in the planning area?
Y N X PA b. Will the project have direct or indirect adverse impacts on any
such designated species?
Y N X PA c. Will the project have direct or indirect adverse impacts on fish,
wildlife or their habitat including migratory routes,wintering or
calving areas?
Y N X PA d. Does the planning area include a sensitive habitat area designed by
a local, State or Federal wildlife agency?
Discussion and References: The U.S. Fish&Wildlife denotes 10 threatened, endangered, and
candidate species in Weld County. There should be no adverse impacts on any species.
12. Recreation and Open Space
Y N X PA a. Will the project eliminate or modify recreational open space,parks
or areas of recognized scenic or recreational value?
Y N X PA b. Is it feasible to combine the project with parks, bicycle paths,
hiking trails,waterway access and other recreational uses?
Discussion and References:
13. Agricultural Lands
Y N X PA a. Does the planning area contain any environmentally significant
agricultural lands (prime, unique, statewide importance, local
importance, etc.) as defined in the EPA Policy to Protect
Environmentally Significant Agricultural Lands dated September
8, 1978?
Y_ N X PA b. Will the project directly or indirectly encourage the irreversible
conversion of Environmentally Significant Agricultural Lands to
uses which result in the loss of these lands as an environmental or
essential food production resource?
Discussion and References:
Town of Lochbuie.Colorado Environmental Assessment-W WTF Phase 1B Expansion
June 2006 Appendix A-4 JHC Project No.324-11
14. Air Quality
Y N X PA_ a. Are there any direct air emissions from the project(e.g., odor
controls, sludge incinerator)which do not meet Federal and State
emission standards contained in the State Air Quality
Implementation Plan(SIP)?
Y N X PA b. Is the project service area located in an area without an approved
or conditionally approved SIP?
Y X N PA c. Is the increased capacity of the project greater than 1 mgd?
Y N X PA d. Do the population projections used in the facilities plan exceed the
State or area wide projections in the SIP by more than 5%?
Y X N PA e. Does the project conform with the requirements of the SIP? (See
EPA regulations under Section 316 of the Clean Air Act.)
Y N X PA f. Is the project inconsistent with the SIP of an adjoining State that
may be impacted by the Project?
Y_ N X PA g. Does the project violate national ambient Air Quality Standards in
an attainment or unclassified area?
Y_ N X PA h. Will the facilities create an odor nuisance problem?
Discussion and References:
15. Water Quality and Quantity(Surface/Groundwater)
Y N X PA a. Are present stream classifications in the receiving stream being
challenged as too low to protect present or recent uses?
Y N X PA b. Is there a substantial risk that the proposed discharge will not meet
existing stream standards or will not be of sufficient quality to
protect present or recent stream uses?
Y_ N X PA c. Will construction of the project and development to be served by
the project result in non-point water quality problems
(sedimentation,urban stormwater, etc.)?
Y N X PA d. Will water rights be adversely affected by the project?
Y N X PA e. Will the project cause a significant amount of water to be
transferred from one sub-basin to another(relative to the 7-day, 10
year flow of the diverted basin)?
Y X N_ PA f. Will stream habitat be affected as a result of the change in flow or
stream bank modification?
Y N X PA g. Are stream conditions needed for deciding upon the required
limitations inadequately specified in the 208 Plan? If so,have the
wasteload allocations calculations been performed and approved
by the State and EPA?
Y N X PA h. Is an Antidegradation Review required?
Y N X PA i. Will the project adversely affect the quantity or quality of a
groundwater resource?
Town of Lochbuie,Colorado Environmental Assessment-W WTF Phase 1B Expansion
June 2006 Appendix A-5 JHC Project No.324-11
Y_ N X PA j. Does the project adversely affect an aquifer used as a potable
drinking water supply?
Y N X PA k. Are there additional cost effective water conservation measures
that could be adopted by community?
Discussion and References: Discharge from the WWTP will increase flows in the Beebe Seep
Canal,but will not have an adverse affect.
16. Public Health
Y_ N X PA_ a. Will there be adverse direct or indirect noise impacts from the
project?
Y N X PA b. Will there be a vector problem(e.g., mosquito) from the project?
Y N X PA c. Will there be any unique public health problems as a result of the
project(e.g., increased disease risks)?
Discussion and References:
17. Energy
Y N X PA a. Are there additional cost effective measures to reduce energy
consumption or increase energy recovery which could be included
in this project?
Discussion and References:
18. Regionalization
Y N X PA a. Are there jurisdictional disputes or controversy over the project?
Y N X PA b. Is conformance with the local or regional planning efforts in
question?
Y X N_ PA c. Have inter jurisdictional agreements been signed?
Discussion and References:
19. Public Participation
Y N X PA a. Is there a substantial level of public controversy?
Y X N_ PA b. Is there adequate evidence of public participation in the project?
Discussion and References:
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 Appendix A-6 JHC Project No.324-11
20. Environmental Laws
Y N X PA a. Does the project threaten to violate any State, Federal or local law
or requirement imposed to protect the environment?
Completed: —, L- Date: 6l1$i0e,
Project t nger
Reviewed: Date:
Project Administrator
Certified: Date:
Program Administrator
Town of Lochbuie,Colorado Environmental Assessment-WWTF Phase 1B Expansion
June 2006 Appendix A-7 JHC Project No.324-11
APPENDIX B
REQUEST FOR COMMENTS LIST
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June 26, 2006
«Name»
«Title»
«Company»
«Department»
«Addressl»
«Address2»
«City», «State» «Zip»
Re: Environmental Assessment
Wastewater Treatment Facility Phase 1B Improvements
Town of Lochbuie, Colorado
JHC Project No. 324-11
Dear «Last_Name»:
The Town of Lochbuie, Colorado (Town) is in the final planning phase of their
Wastewater Treatment Facility (WWTF) Phase 1B expansion. The Town plans to
finance the WWTF Phase 1B expansion with a combination of existing funds and low-
interest loans through the Colorado Water Resources and Power Development
Authority (CWRPDA). Jacobson Helgoth Consultants, Inc. (JHC) has prepared an
Environmental Assessment (EA) report as well as a Preliminary Engineering Report
(PER).
The purpose of this letter is to request that your organization review and provide a
response regarding any environmental impacts that you may identify for this proposed
project pursuant to the National Environmental Policy Act (NEPA). We are particularly
interested in your comments regarding the impacts on agricultural lands, wetlands,
flora and fauna, floodplains, water quantity and quality, and natural resources
«Area_of_Concern» within the project area.
The Lochbuie WWTF currently provides wastewater treatment for the Town of
Lochbuie, portions of the City of Brighton, and other developments in the area. The
existing WWTF is an extended aeration activated sludge plant with a hydraulic capacity
of 1 million gallons per day (MGD) and an organic loading design of 1,920 pounds per
day (lbs/day). Due to projected growth within the service boundary, the Town of
Lochbuie has elected to expand the current capacity of the WWTF. The proposed
expansion will include an expanded headworks facility for preliminary treatment, two
additional aeration basins and an additional digester, a process pump station, a solids
handling facility, and an administration building that will contain a laboratory facility.
«Name»
June 26, 2006
Page Two
The WWTF Phase 1B expansion completes the original Phase 1 design and will have a
hydraulic capacity of 2.0 MGD and an organic loading limit of 3,840 lbs/day.
Enclosed is a copy of the EA report providing a description of the proposed work
involved, the potential environmental impacts, and maps that show project location and
existing service areas.
We request that you advise us of any comments you may have regarding this project,
within 30 days, to enable the Town to proceed with finalizing the funding for this
project and completion of the EA report. Comments can be sent to:
Cindy J. Titus, E.I.T.
Jacobson Helgoth Consultants, Inc.
12640 West Cedar Drive, Suite A
Lakewood, CO 80228-2030
If you have any questions concerning this proposed project or if you require any further
information, please do not hesitate to contact me at (303) 987-0733.
Sincerely,
JACOBSON HELGOTH CONSULTANTS, INC.
Cindy J. Titus, E.I.T.
Project Engineer
CJT/ky
Enclosure
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