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HomeMy WebLinkAboutNC0050105_Correspondence_20201021ROY COOPER Governor MICHAEL S. REGAN Secretory Kim H. Colson Director Mr. David Trego, CEO/General Manager Fayetteville Public Works Commission PO Box 1089 Fayetteville, NC 28302 SUBJECT: Dear Mr. Trego: October 21, 2019 Fayetteville Public Works Commission Rockfish Creek Basin Peak Flow Facilities Project No. CS370434-14 This is to inform you that the Finding of No Significant Impact (FONSI) and the Environmental Assessment have been submitted to the State Clearinghouse. The documents will be advertised for thirty (30) calendar days in the N.C. Environmental Bulletin. Advertising the FONSI is required prior to a local unit of government receiving financial support from the State Revolving Loan program. You will be informed of any significant comment or public objection when the advertisement period is completed. A copy of the documents is transmitted for your record. The documents should be made available to the public. If there are any questions, please contact me at (919) 707-9177. Since ely, n Risga , Chief State Re ving Fund Section Division of Water Infrastructure SCK Attachment (all cc's) cc: Reed Barton, PE, CDM Smith, 5400 Glenwood Ave, Suite 400, Raleigh, NC 27612 North Carolina Department of Environmental Quality I Division of Water Infrastructure 512 N. Salisbury Street 11633 Mail Service Center I Raleigh, North Carolina 27699-1633 919.707.9160 Fayetteville Public Works Commission Rockfish Creek Peak Flow Facilities Project SRF Project No. CS370434-14 October 21, 2019 Page 2 of 2 Susan C. Kubacki (via email) Ken Pohlig, PE Mark Hubbard, P.E. Jennifer Haynie DWQ - FRO CWSRF File (ER/EID) FINDING OF NO SIGNIFICANT IMPACT AND ENVIRONMENTAL ASSESSMENT FAYETTEVILLE PUBLIC WORKS COMMISSION ROCKFISH CREEL{ PEAK FLOW FACILITIES RESPONSIBLE AGENCY: NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY CONTACT: JON RISGAARD, SECTION CHIEF STATE REVOLVING FUND SECTION DIVISION OF WATER INFRASTRUCTURE 1633 MAIL SERVICE CENTER RALEIGH, NORTH CAROLINA 27699-1633 (919)707-9175 October 21, 2019 (This page intentionally left blank) FINDING OF NO SIGNIFICANT IMPACT Article I, Chapter 113A of the North Carolina General Statutes requires an action to be subject to the requirements of the North Carolina Environmental Policy Act (NCEPA) if it involves the expenditure of public funds and if a potential impact is anticipated to the environment. The project has been evaluated for compliance with the NCEPA and is determined to be a major agency action, which will affect the environment. Project Applicant: Fayetteville Public Works Commission, North Carolina Project Description: The proposed project will provide equalization of wastewater flows in the Rockfish Creek trunk sewer system and will include the following components: a sanitary sewer flow diversion structure, a flow equalization pump station with a capacity of 12.5 million gallons per day (MGD); a 3.5 million gallon above- ground flow equalization storage tank; approximately 1,100 linear feet (l.f.) of 24-inch forcemain to convey diverted flow from the pump station to the storage tank; and approximately 5501.f. of 36- inch diameter gravity sewer to drain the storage tank back into the trunk sewer downstream of the diversion point. Project Number: CS370434-14 Project Cost: $18,270,240 Clean Water State Revolving Loan Fund: $17,912,000 Local Funds: $358,240 The review process indicated that significant adverse environmental impacts should not occur if mitigative measures are implemented, and an environmental impact statement will not be required. The decision was based on information in the Engineering Report and reviews by governmental agencies. The attached Environmental Assessment (EA) supports this action and outlines mitigative measures that must be followed. This Finding of No Significant Impact (FONSI) completes the environmental review record, which is available for inspection at the State Clearinghouse. No administrative action will be taken on the proposed project for at least 30 days after notification that the FONSI has been published in the North Carolina Environmental Bulletin. Sincerely, on Risg d Section Chief State Revolving Fund Section Division of Water Infrastructure ENVIRONMENTAL ASSESSMENT A. Proposed Facilities and Actions The City of Fayetteville Public Works Commission (PWC) is proposing to provide equalization of wastewater flows in the Rockfish Creek trunk sewer system. The proposed project will include the following components: a sanitary sewer flow diversion structure, a flow equalization pump station with a capacity of 12.5 million gallons per day (MGD); a 3.5 million gallon above- ground flow equalization storage tank; approximately 1,100 linear feet (l.f.) of 24-inch forcemain to convey diverted flow from the pump station to the storage tank; and approximately 550 Lf. of 36-inch diameter gravity sewer to drain the storage tank back into the trunk sewer downstream of the diversion point. Funding Status: The estimated total cost for the project is $18,270,240. The PWC is applying for a Clean Water State Revolving Fund (CWSRF) loan of $17,912,000. Local funds will cover the loan fees of $358,240. B. Existing Environment Topography and Soils. The Fayetteville PWC Rockfish Creek Pump Station and Storage Tank project is in the Coastal Plain Physiographic Province in the Cape Fear geologic formation. The project site elevations range from approximately 118 feet to 168 feet above mean sea level. The dominant soils at the project site are Johnston Loam, frequently flooded; Gilead loamy sand with 2 to 8 percent slopes; Vaucluse loamy sand with 8 to 15 percent slopes, and Wagram-Urban land complex with 0 to 8 percent slopes. Surface Water. The project area is located in the Cape Fear River Basin. (HUC 03030004). Beaver Creek, a Class C stream, runs along the west side of the project area near the confluence with Little Rockfish Creek, also rated as Class C. Water Supply. Drinking water provided by Fayetteville PWC is drawn from the Cape Fear River, Big Cross Creek, and the Little Cross Creek watershed, which include Bonnie Doone Lake, Kombow Lake, Mintz Pond, and Glenville Lake. C. Existing Wastewater Facilities The PWC owns and operates two wastewater treatment plants: Cross Creek Water Reclamation Facility and Rockfish Creek Water Reclamation Facility. The wastewater collection system serves 86,152 residential and non-residential customers throughout the service area covering portions of the City of Fayetteville, the Town of Hope Mills, and Cumberland County. The sewer system includes approximately 6,824,04011 of gravity sewer, 72 lift stations, and 295,68011 of forcemain. D. Need for Proposed Facilities and Actions The proposed project is needed to reduce the potential for sanitary sewer overflows (SSOs) in the Rockfish Creek sewershed during peak wet weather events. Modeling of projected future flow conducted as part of a detailed study of the sewer collections system indicated that the existing Rockfish Creek trunk sewer does not have sufficient capacity to prevent sewer surcharges and SSOs during peak flow events. E. Alternatives Analysis No -Action Alternative: Under the No -Action Alternative, no project would be constructed. With no improvements to increase capacity of the system or reduce peak wet -weather flows, the frequency of SSOs is expected to increase. This alternative was rejected as infeasible. Alternative 1— Construction of Relief Sewers: This alternative would include construction of four segments of relief sewers totaling 54,4001.f. with diameters ranging from 30 to 42 inches parallel to the existing Beaver Creek basin trunk sewer. This alternative was rejected because of higher cost and greater loss of forest resources. Alternative 2 — Construction of Flow Equalization Facility: This alternative would construct a flow equalization facility to divert a portion of peak wet -weather flows to an offline storage facility to reduce hydraulic loading on the downstream system. The facility would include a diversion structure near the confluence of the 36-inch diameter trunk sewer from the Little Rockfish Creek sub -basin with the 42-inch diameter trunk sewer from the Beaver Creek sub - basin, a 12.5 MGD pump station, a 3.5 million gallon storage tank, forcemain to convey sewer from the pump station to the storage tank, and gravity sewer to drain the storage tank back into the system downstream of the diversion point. This alternative is preferred because of lower cost and smaller environmental footprint. F. Environmental Consequences and Mitieative Measures Topography and Soils: Impacts to topography and soils are not expected to be significant. The forcemain, gravity sewer, and diversion structure will be installed below grade and existing topography will be restored. Portions of the project site include special flood hazard areas, but the storage tank and pump station will be located outside of the 100-year floodplain and floodway. Soil loss will be minimized by following a DEQ-approved Erosion and Sediment Control Plan. A floodplain development permit will be obtained. Impacts from future development will be mitigated by the flood hazard ordinances of Cumberland County. The City of Fayetteville, and the Town of Hope Mills. County's Flood Protection Ordinance and Streamside Buffer Ordinance, which require flood protection for structures in flood hazard areas and control development that would increase erosion or flood damage or alter floodplains and stream channels. 2 Land Use: The project will be constructed on land owned by Fayetteville PWC. Most of the 507-acre parcel is vacant and wooded. Zoning is Conservancy District and Residential. Proposed facilities will be constructed in section zoned for Residential. Areas adjacent to the site will be unaffected and still be available for residential development. Significant impacts related to future growth will be avoided by following the Growth Vision Plan, which seeks to preserve open space and manage growth to reduce land use conflicts and mitimie adverse impacts to the region's environment. Wetlands: There is an area of seasonally flooded forested wetland and a pond that has transitioned to emergent -vegetation wetland on the project site. Impacts to wetlands are not expected to be significant. The pump station and storage tank will be located outside of the wetland areas. Construction of the flow diversion structure will have minor impacts to the wetland. Section 404 and 401 permits will be obtained. A DEQ-approved Erosion and Sediment Control Plan will be implemented. The site is within the Town of Hope Mills Municipal Influence Area. A stormwater BMP will be developed if required by the Town. Significant impacts related to future growth will be avoided by following the Growth Vision Plan, which seeks to preserve open space, and manage growth to minimize adverse impacts to the region's environment. In an email dated February 6, 2018, the U.S. Army Corps of Engineers noted that no impacts to jurisdictional waters are anticipated, written authorization is required prior to construction, and the Corps has no objections to the project (AID# SAW-2018-00163). Important Farmlands: Impacts to important farmlands are not anticipated. A portion of the site parcel includes soils classified as prime farmlands, but the construction will not take place in that area. Soil loss will be minimized by following a DEQ-approved Erosion and Sedimentation Control Plan. Significant impacts related to future growth will be avoided by following the Growth Vision Plan, which seeks to preserve open space, and manage growth to minimize adverse impacts to the region's environment. Public Lands and Scenic. Recreational, and State Natural Areas: There are no known public lands, scenic, recreational, or state natural in the immediate project area; thus, there will be no direct impacts to these areas. Potential impacts related to future development will be mitigated by following the area's Growth Vision Plan. Cultural Resources: In a memorandum dated January 14, 2018, (No. ER 18-0306), the North Carolina State Historic Preservation Office (SHPO) stated that they are aware of no historic resources which would be affected by the project. Air Quality: No significant impacts to air quality are anticipated. There may be temporary increases in dust emissions and from site disturbance and exhaust emissions from construction equipment. The storage tank will be covered to prevent odors. Open burning of debris will not be allowed during construction. Impacts to air quality related to future growth will be minimized by following the Growth Vision Plan. Noise Levels: No significant permanent noise impacts are anticipated. Temporary noise is expected during construction activities and will be limited to daylight hours as much as possible. The contractor will be required to comply with the Cumberland County noise ordinance. Noise impacts related to future growth and development will be restricted by noise ordinances for Cumberland County, City of Fayetteville, and Town of Hope Mills. Water Resources: No significant impacts to water resources are anticipated. An Erosion and Sediment Control plant and Stormwater NPDES permit will be submitted to DEQ for approval prior to construction. The project will reduce sewer overflows and improve water quality. A stormwater BMP will be constructed if required by the Town of Hope Mills. Significant impacts related to future growth will be minimized by following the Growth Vision Plan, which seeks to preserve open space, and manage growth to minimize adverse impacts to the region's environment. Forest Resources: No significant impacts to forest resources are expected. Most of the project facilities will be constructed on already cleared areas. Tree clearing will be minimized, and buffers and property setbacks required by the Town of Hope Mills will be maintained. Impacts from future growth will be minimized by following the Growth Vision Plan. Shellfish or Fish and Their Habitats: Impacts to shellfish, fish, and their habitats are not expected to be significant. An Erosion and Sediment Control plant and Stormwater NPDES permit will be submitted to DEQ for approval prior to construction. The project will reduce sewer overflows and improve water quality. A stormwater BMP will be constructed if required by the Town of Hope Mills. Significant impacts related to future growth will be avoided by following the Growth Vision Plan, which seeks to preserve open space, and manage growth to minimize adverse impacts to the region's environment. Wildlife and Natural Vegetation: No significant impacts to wildlife and natural vegetation are expected. Much of the construction will occur in already cleared areas. Wildlife might be temporarily impacted during construction, but disturbed areas will be reseeded, and wildlife is expected to return upon completion of construction activities. Significant impacts related to future growth will be avoided by following the Growth Vision Plan, which seeks to preserve open space, and manage growth to minimize adverse impacts to the region's environment. Introduction of Toxic Substances: The project is not expected to introduce toxic substances to the environment. Construction equipment will be monitored to avoid release of toxic substances such as fuels or lubricants. The U.S. Fish and Wildlife Service reviewed the proposed project and concluded that the requirements of Section 7(a)(2) of the Endangered Species Act have been fulfilled (March 19, 2019 and March 6, 2018). The North Carolina Wildlife Resources Commission, Natural Heritage Program, and DWR Fayetteville Regional Office concur with the proposed project. The U.S. Army Corps of Engineers does not object to the project (February 6, 2018 AID# SAW- 2018-00163). The North Carolina Department of Natural and Cultural Resources is not aware of historic resources that would be affected by the project (January 14, 2019, ER 18-0306). 0 G. Public Participation, Sources Consulted A public meeting was held on July 24, 2019 including a presentation about the proposed project. There were no comments on the project. The current user charge for a typical customer is $62.40 per month for 5,000 gallons of water and sewer service combined. The proposed project is expected to increase rates by 2.22% to $63.79 per month for 5,000 gallons. Sources consulted about this project for information or concurrence included 1) Fayetteville Public Works Commission 2) Cumberland County 3) Town of Hope Mills 4) North Carolina Department of Environmental Quality -Wildlife Resources Commission -Natural Heritage Program -DEQ Fayetteville Regional Office -Division of Air Quality -Division of Water Resources -Division of Forest Resources -Division of Environmental Assistance and Customer Service -Division of Waste Management 5) North Carolina Department of Natural and Cultural Resources 6) North Carolina State Clearinghouse 7) North Carolina Department of Public Safety 8) U.S. Fish and Wildlife Service 9) U.S. Army Corps of Engineers