State Revolving Loan Fund Program
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CLEAN WATER STATE REVOLVING LOAN FUND PROGRAM FINDING OF NO SIGNIFICANT IMPACT TO: All Interested Citizens, Government Agencies and Public Groups In accordance with the Nebraska Clean Water State Revolving Fund environmental review process, which is based on the National Environmental Policy Act, an environmental review has been performed on the proposed agency action below: PROJECT NAME: South Sioux City Industrial Wastewater Treatment System South Sioux City, Nebraska CWSRF PROJECT NUMBER: C317835 TOTAL PROJECT AMOUNT: $13,300,000 EXPECTED CWSRF LOAN: $13,300,000 The city of South Sioux City is located in Dakota County in northeast Nebraska, next to the Missouri River and across from Sioux City, Iowa. The 2010 census population for South Sioux City was 13,353. That is an increase of 12 percent from the year 2000, indicating a growing community. The South Sioux City sanitary sewer system includes about 40 miles of sewers and 15 lift stations. Their wastewater is pumped under the Missouri River for treatment at the Sioux City, Iowa regional wastewater treatment facility. That treatment facility is currently undergoing major renovations to improve the level of treatment. South Sioux City is developing the Roth Industrial Park which is located south of Interstate 129. Much of the 250 acre site is undeveloped and still used for agricultural production. There are currently three food-processing facilities at the industrial park. Some expansion at these existing facilities is planned and two new industries are proposing to build facilities at the industrial park. South Sioux City proposes to construct a new wastewater treatment system to serve the industrial facilities located in the Roth Industrial Park. The design loadings for the system are based on the projected waste loads for the three existing industries and the two proposed industries plus a reserve for other new industries. The design period for the project is five to 10 years; a second phase would expand the treatment facility when needed. The project will include lined and covered anaerobic cells, anoxic and aerated activated sludge basins, final clarifiers and ultraviolet disinfection. A new outfall sewer will be constructed to convey plant effluent to the Missouri River. Waste activated sludge will be stabilized in the anaerobic cells, dewatered with a belt filter press and hauled to a landfill near Jackson, Nebraska. Biogas collected in the covered anaerobic cells will initially be piped to a flare for burning or diffused and oxidized in the aeration basins. It may be utilized in the future when gas production increases making it economically feasible for cogeneration. In an emergency, the facility can be by-passed with treatment in Sioux City. A National Pollutant Discharge Elimination System permit will be obtained for the new discharge to the Missouri River. The river segment to receive the discharge is designated as Segment MT1-10000 of the Missouri Tributaries River Basin. Assigned uses in this segment include recreation, warm water Class A aquatic life and public drinking water. Aquatic life in the segment is impaired by hazardous compounds. The proposed South Sioux City industrial wastewater treatment system is eligible for financing through the Clean Water State Revolving Fund (CWSRF) and is included in the FY2011 Intended Use Plan. A 3.25 percent, 20-year loan totaling $13,300,000 is proposed for the project. The city has applied for an Economic Development Administration grant that, if awarded, would reduce the amount of the CWSRF loan by up to $2,000,000. In addition to loan principal and interest payments, the City would be charged an administrative fee of 1.0 percent of the principal balance each year. Revenues from the City’s combined utilities, including their electric, water and sewer systems, and local option sales tax will be dedicated to repay the loan. Sewer user fees, particularly those paid by the industries using the new treatment system, will be a primary source of revenue to operate and maintain the facility and repay the loan. Sioux City’s revenue requirements have a direct impact on sewer rates in South Sioux City. South Sioux City adopted new sewer rates in 2009 with rate increases scheduled for July 2011. Residential sewer users in South Sioux City currently pay $32.31 per month on a water use of 5,000 gallons. South Sioux City’s sewer rates must be updated to assure that industries pay their proportional share of debt service and operation and maintenance costs. The environmental review included a public hearing, agency reviews and additional studies, including a wetland evaluation. A public hearing to discuss the project was held on January 24, 2011. There was no opposition to the project expressed at the public hearing. The State and Federal agencies asked to review the project had only a few comments. The Corps of Engineers provided information on Section 404 permit requirements. Several wetlands were identified along the outfall sewer route. The Nebraska Department of Natural Resources reported that some registered wells might be located near the project site and indicated that a flood plain development permit will be required for the outfall. Further investigation determined that those wells had been properly abandoned. The Natural Resources Conservation Service reported no significant concerns relating to farmland conversion. The project will have a positive impact on the environment. It will help to assure wastewater from the industries receives proper treatment and disposal, thus protecting ground water and surface water quality and fish and wildlife resources in the Missouri River. The new facility would remove a potential impediment to economic growth in the community. The review did not indicate a significant negative environmental impact will result with the proposed action. No threatened or endangered species or recorded historical or archaeological sites will be affected by construction. A Section 404 permit will be required for the outfall. Permanent impacts to wetlands will be limited to a 340-foot section of outfall sewer requiring added fill material to adequately cover the pipe. The project will have little or no impact on flood flows. About 22 acres of land now used to grow crops will be needed for the project. The project is expected to facilitate industrial development and, therefore, may indirectly impact land use and water consumption in the future. The project will include mitigation measures to protect nesting migratory birds and to minimize storm water runoff and other impacts of construction. As the treatment plant site is isolated from residential and commercial areas, impacts to the human environment will be minimal. The project was planned to ensure that no segment of the community’s population is impacted disproportionately from related effects. Consequently, a preliminary decision has been made that an environmental impact statement will not be prepared. This action is taken on the basis of a careful review of the facility plan, agency comments, environmental assessment and other supporting data, which are on file in the office of the Nebraska Department of Environmental Quality (NDEQ). These are available for public review upon request. A copy of the environmental assessment is attached. The NDEQ will not take any administrative action on the project for at least 30 calendar days from the date shown below. Persons disagreeing with the above environmental decision may submit comments to the NDEQ during this period. Signed this __________ day of ____________________, 2011. Sincerely, Michael J. Linder Director MJL/RS/rs Attachments: Environmental Assessment Distribution List Map ENVIRONMENTAL ASSESSMENT DOCUMENT A. Project Identification: Applicant: City of South Sioux City Project No.: C317835 City: South Sioux City County: Dakota State: NE Total Project Amount: $13,300,000 Potential CWSRF Loan: $13,300,000 B. Community Description: Location: The city of South Sioux City is located in Dakota County in northeast Nebraska, next to the Missouri River and across from Sioux City, Iowa. The Roth Industrial Park is located south of Interstate 129 and is the site of several food-processing facilities. Population: The 2010 census population for South Sioux City was 13,353, a 12 percent increase from the year 2000. Current Methods of Waste Treatment: South Sioux City has about 40 miles of sanitary sewers with 15 lift stations. A lift station on the northeastern edge of the city is used to pump wastewater under the Missouri River to the Sioux City, Iowa sewer system. In 2008, a second lift station and force main were built north of Interstate 129 to transport a portion of the city’s wastewater, including the wastewater from the food processing industries located in the southern part of the City, eastward to Sioux City. The wastewater is treated at Sioux City’s regional treatment facility, which serves several communities from Iowa, Nebraska and South Dakota. The treatment facility, which has a capacity of 30 million gallons per day, is currently undergoing major renovations to improve the level of treatment. Sioux City has informed the South Sioux City industries that the waste load parameters and flows in their individual pretreatment permits would be reduced on August 16, 2011. These limitations will prevent expansion and may impact current production levels at the industrial park facilities. C. Project Description: Purpose: The proposed project is the construction of a new wastewater treatment system to