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Home My WebLink About2022-09-06 H01 NE Outfall Sewer_SRF Environmental Info Doc_PHAGENDA ITEM: CITY OF WAUKEE, IOWA CITY COUNCIL MEETING COMMUNICATION MEETING DATE: September 6, 2022 AGENDA ITEM:On a State Revolving Fund (SRF) Environmental Information Document for the City of Waukee NE Outfall Sewer Project FORMAT:Public Hearing SYNOPSIS INCLUDING PRO & CON: The purpose of this project is to make improvements to the wastewater collection facilities in order to enhance their reliability, increase their capacity and to replace obsolete systems to safely and reliably operate the City of Waukee’s wastewater system for the next 20 or more years. The project will include construction of approximately 17,600 linear feet of 30-inch diameter gravity flow sanitary sewer by open cut and trenchless methods, manholes, diversion structure, clearing and grubbing, surface restoration, streambank stabilization and miscellaneous associated work. FISCAL IMPACT INCLUDING COST/BENEFIT ANALYSIS: COMMISSION/BOARD/COMMITTEE COMMENT: STAFF REVIEW AND COMMENT: RECOMMENDATION: Hold Public Hearing. ATTACHMENTS: I. Iowa State Revolving Fund Environmental Information Document PREPARED BY:Beth Richardson REVIEWED BY: Rudy Koester RK H1 INVESTING IN IOWA’S WATER www.iowasrf.com Why You Should Read This: The document below reviews the environmental impact likely from a project. This project is planned to be federally funded through your tax dollars; therefore, you are entitled to take part in its review. If you have concerns about the environmental impact of this project, raise them now. We encourage public input in this decision making process. IOWA STATE REVOLVING FUND ENVIRONMENTAL INFORMATION DOCUMENT PROJECT IDENTIFICATION Applicant: City of Waukee SRF Number: CS1921063 01 County: Dallas Iowa DNR Project Number: W2022‐0164A State: Iowa COMMUNITY DESCRIPTION Location: The City of Waukee is located in Dallas County, Iowa approximately 15 miles west of Des Moines, Iowa and 40 miles southwest of Ames, Iowa. Population: The population of Waukee according to the 2020 US Census was 23,940. An approximate future population for the service area in this project is 35,000 people. Current Waste Collection System: This service area’s wastewater currently flows to Waukee Lift Station No. 7. This lift station conveys the flows to the south through a 16” diameter force main to where it eventually reaches the Wastewater Reclamation Authority conveyance system and wastewater treatment plant. The capacity of the existing Lift Station No. 7 is 3.0 MGD. With the expected growth in this area of the City, the lift station is expected to exceed its capacity within the next several years. The capacity of the 16” force main is 5.0 MGD. Construction of the Northeast Outfall Sewer project will replace Lift Station No. 7 and provide sanitary sewer service to this service area in the future. PROJECT DESCRIPTION Purpose: The purpose of this project is to make improvements to the wastewater collection facilities to enhance their reliability, increase capacity and to replace obsolete system to safely and reliably operate the City of Waukee’s wastewater system for the next 20 years. Proposed Improvements: The project will include construction of approximately 17,600 linear feet of 30‐inch diameter gravity flow sanitary sewer by open cut and trenchless methods, manholes, diversion structure, clearing and grubbing, surface restoration, streambank stabilization and miscellaneous associated work. EID Page 2 City of Waukee CS1921063 01 INVESTING IN IOWA’S WATER www.iowasrf.com Receiving Stream: The wastewater collected in the Waukee northeast outfall sewer will connect to a Des Moines Metropolitan Wastewater Reclamation Authority (WRA) trunk sewer that is currently under design for the purpose of serving the City of Grimes. This wastewater will be treated at the Des Moines WRA (NPDES Permit 7727001) and discharge into the Des Moines River [Class A1, Class B(WW1), and Class HH]. Class A1 waters are primary contact recreational use waters in which recreational or other uses may result in prolonged and direct contact with the water, involving considerable risks of ingesting water in quantities sufficient to pose a health hazard. Such activities would include, but not be limited to, swimming, diving, water skiing, and water contact recreational canoeing. Waters designated Class B(WW1) are those in which temperature, flow and other habitat characteristics are suitable to maintain warm water game fish populations along with a resident aquatic community that includes a variety of native nongame fish and invertebrates species. These waters generally include border rivers, large interior rivers, and the lower segments of medium‐size tributary streams. Waters designated Class HH are those in which fish are routinely harvested for human consumption or waters both designated as a drinking water supply and in which fish are routinely harvested for human consumption. Alternatives Considered: One gravity sanitary sewer and two force main system alignment alternatives were identified for possible improvements to the sanitary sewer collection system. Alternative Alignment 1 ‐ Construction of the Northeast Outfall Sewer would provide service to the entire Northeast Outfall Sewer service area with a 30" trunk sewer. The proposed sewer travels by gravity to the east from the site of the existing Lift Station No. 7 through the cities of Clive and Urbandale. It will connect to a WRA trunk sewer that is currently under design for the purpose of serving the City of Grimes. Alternative Alignment 2 – Construction of an expanded lift station and force main to pump wastewater flows to a connection to the WRA to the south. This would use the existing force main until its capacity at 5 MGD was reached. At that point, a parallel force main would be constructed to pump the additional wastewater to the south to a connection with a WRA trunk sewer in West Des Moines. Alternative Alignment 3 – Construction of an expanded lift station and force main to pump wastewater flows to a connection to the WRA the north. This would run north to connect with a WRA trunk sewer in Urbandale. Reasons for Selection of Proposed Alternative: Alternative 2 and 3 were cost prohibitive. Alternative 1 was selected to address the financial limitations of the community and the need for additional hydraulic capacity within the system. The project route was selected for the availability of land, negotiations with adjoining communities, site separation distances, engineering criteria, as well as minimization of the impacts to the environment. EID Page 3 City of Waukee CS1921063 01 INVESTING IN IOWA’S WATER www.iowasrf.com MEASURES TAKEN TO ASSESS IMPACT Coordination and Documentation with Other Agencies and Special Interest Groups: The following Federal, state and local agencies were asked to comment on the proposed project to better assess the potential impact to the environment: U.S. Army Corps of Engineers U.S. Fish and Wildlife Service State Historical Society of Iowa (State Historical Preservation Office) Iowa DNR Conservation and Recreation Division Iowa DNR Flood Plain Management Section Citizen Band Potawatomi Indian Tribe Flandreau Santee Sioux Ho‐Chunk Nation Iowa Tribe of Kansas and Nebraska Iowa Tribe of Oklahoma Kickapoo Tribe in Kansas Kickapoo Tribe of Oklahoma Lower Sioux Indian Community Council Miami Tribe of Oklahoma Omaha Tribal Council Osage Tribal Council Otoe‐Missouria Tribe Pawnee Nation of Oklahoma Peoria Tribe of Indians of Oklahoma Ponca Tribe of Indians of Oklahoma Ponca Tribe of Nebraska Prairie Band Potawatomi Nation Prairie Island Indian Community Sac & Fox Nation of Mississippi in Iowa Sac & Fox Nation of Missouri Sac & Fox Nation of Oklahoma Santee Sioux Nation Shakopee Mdewakanton Sioux Community Sisseton‐Wahpeton Oyate Spirit Lake Tribal Council Three Affiliated Tribes Mandan, Hidatsa & Arikara Nations Upper Sioux Tribe Winnebago Tribal Council Yankton Sioux Tribal Business and Claims Committee Dallas County Historic Preservation Commission No adverse comments were received from any agencies or general public. Conditions placed on the applicant by the above agencies in order to assure no significant impact are included in the Summary of Reasons for Concluding No Significant Impact section. EID Page 4 City of Waukee CS1921063 01 INVESTING IN IOWA’S WATER www.iowasrf.com ENVIRONMENTAL IMPACT SUMMARY Construction: Traffic patterns within the community may be disrupted and above normal noise levels in the vicinity of the construction equipment can be anticipated during construction and should be a temporary problem. Adverse environmental impacts on noise quality will be handled by limited hours of contractor work time during the day. Other adverse environmental effects from construction activities will be minimized by proper construction practices, inspection, prompt cleanup, and other appropriate measures. Areas temporarily disturbed by the construction will be restored. Solid wastes resulting from the construction project will be regularly cleared away with substantial efforts made to minimize inconvenience to area residents. Care will be taken to maintain dirt to avoid erosion and runoff. The proposed project will disturb soils over an area greater than one acre; therefore, the applicant is required to obtain an NPDES General Permit Number 2 (for storm water discharge associated with construction activities) and abide by its terms. Provided that this permit is obtained and the terms of which are abided by, no significant impact to surface water quality, fish, shellfish, wildlife, or their natural habitats is expected. Temporary air quality degradation may occur due to dust and fumes from construction equipment. The applicant shall take reasonable precautions to prevent the discharge of visible emissions of fugitive dusts beyond the lot line of the property during the proposed project (567 Iowa Administrative Code IAC 23.3(2)“c”). Historical/Archaeological: Various Native American tribes with an interest in the area and the Certified Local Government were provided information regarding the project. The State Historical Preservation Office (SHPO), the Certified Local Government and various Native American tribes with an interest in the area were provided information regarding the project. The DNR has determined, and the SHPO has concurred (R&C#220825118), that this undertaking will result in “no historic properties affected” based on the scope of the project, the prior use of the project area, and the findings of the Phase I Archeological Survey conducted on the project property. However, if project activities uncover any item(s) that might be of archaeological, historical, or architectural interest, or if important new archaeological, historical, or architectural data should be encountered in the project APE, the applicant should make reasonable efforts to avoid further impacts to the property until an assessment can be made by an individual meeting the Secretary of the Interior’s professional qualifications standards (36 CFR Part 61). Environmental: A Joint Application was submitted by the City’s consultant to the Iowa DNR Conservation and Recreation Division and U.S. Army Corps of Engineers. The DNR and local Flood Plain Management Sections will determine if the proposed project requires a permit for impacts to the 100‐year floodplain. The U.S. Army Corps of Engineers will determine if the proposed project will impact wetlands or jurisdictional waters of the United States. According to the Iowa DNR Conservation and Recreation Division, the proposed project will not interfere with any State‐owned parks, recreational areas or open spaces. The project will not impact any wild and scenic rivers EID Page 5 City of Waukee CS1921063 01 INVESTING IN IOWA’S WATER www.iowasrf.com as none exist within the State of Iowa. The U.S. Fish & Wildlife Service Section 7 Technical Assistance website consultation determined, and Iowa DNR Conservation and Recreation Division agree, that the project will not impact threatened or endangered species or their habitats provided that any tree cutting is conducted between October 1 and March 31 to avoid impacting endangered bats. However, if any State‐ or Federally‐listed threatened or endangered species or communities are found during the planning or construction phases, additional studies and/or mitigation may be required. No adverse impacts are expected to result from this project, such as those to surface water quantity, or groundwater quality or quantity. No significant impact to surface water quality, fish, shellfish, wildlife, or their natural habitats is expected. Land Use and Trends: The project will not displace population nor will it alter the character of existing residential areas. The proposed project is within the present corporate limits in areas zoned residential, commercial, or industrial. No significant farmlands will be impacted. This project should not impact population trends as the presence or absence of existing water/sewer infrastructure is unlikely to induce significant alterations in the population growth or distribution given the myriad of factors that influence development in this region. Similarly, this project is unlikely to induce significant alterations in the pattern and type of land use. Irreversible and Irretrievable Commitment of Resources: Fuels, materials, and various forms of energy will be utilized during construction. POSITIVE ENVIRONMENTAL EFFECTS TO BE REALIZED FROM THE PROPOSED PROJECT Positive environmental effects will be improved collection and treatment of the wastewater from the City of Waukee, compliance with effluent discharge permit limits, reduced discharge of the pollutants and nutrients to the receiving stream, and improved water quality in the receiving stream. SUMMARY OF REASONS FOR CONCLUDING NO SIGNIFICANT IMPACT  The project will not significantly affect the pattern and type of land use (industrial, commercial, agricultural, recreational, residential) or growth and distribution of population.  The project will not conflict with local, regional or State land use plans or policies.  The U.S. Army Corps of Engineers will determine if the proposed project will impact wetlands or jurisdictional waters of the United States.  The project will not affect threatened and endangered species or their habitats provided that any tree cutting is conducted between October 1 and March 31 to avoid impacting endangered bats. If any State‐ or Federally‐listed threatened or endangered species or communities are found during the planning or construction phases, additional studies and/or mitigation may be required.  The project will not displace population, alter the character of existing residential areas, or convert significant farmlands to non‐agricultural purposes.  The DNR and local Flood Plain Management Sections will determine if the proposed project requires a permit for impacts to the 100‐year floodplain. EID Page 6 City of Waukee CS1921063 01 INVESTING IN IOWA’S WATER www.iowasrf.com  The project will not have effect on parklands, preserves, other public lands, or areas of recognized scenic or recreational value.  No historic properties will be adversely affected by the proposed project. However, if project activities uncover any item(s) that might be of archaeological, historical, or architectural interest, or if important new archaeological, historical, or architectural data should be encountered in the project APE, the applicant should make reasonable efforts to avoid further impacts to the property until an assessment can be made by an individual meeting the Secretary of the Interior’s professional qualifications standards (36 CFR Part 61).  The project will not have a significant adverse effect upon local ambient air quality provided the applicant takes reasonable precautions to prevent the discharge of visible emissions of fugitive dusts beyond the lot line of the property during the proposed project (567 IAC 23.3(2)“c”).  The project will not have a significant adverse effect upon local ambient noise levels, surface water quantity, groundwater quality or quantity, or water supply.  No significant impact to surface water quality, fish, shellfish, wildlife, or their natural habitats is expected provided that an NPDES General Permit Number 2 (for storm water discharge associated with construction activities) is obtained and the terms of which are abided by. The project description, scope, and anticipated environmental impacts detailed above are accurate and complete to the best to my knowledge. Signature of the Mayor, City of Waukee Date Printed Name of the Mayor, City of Waukee Courtney Clarke 09/06/2022 USGS 7.5 Minute Quadrangle: Grimes Sections: 22,23,24,27,28, Township: 79 N, Range: 26 W Date: 1976  North USGS Topographic Map Waukee Northeast Outfall Sewer Waukee & Clive, IA State Revolving Fund 502 East 9th Street Des Moines, IA 50319-0034 Project Location Image source: Wikipedia, 2022. Location information provided by Veenstra & Kimm, Inc.  North Aerial Photograph Waukee Northeast Outfall Sewer Waukee & Clive, IA State Revolving Fund 502 East 9th Street Des Moines, IA 50319-0034 Project Location