Environmental Information Document the Town of Summerdale Waterline Expansion
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ENVIRONMENTAL INFORMATION DOCUMENT FOR The Town of Summerdale Waterline Expansion Alabama Department of Environmental Management FY 2019 Drinking Water State Revolving Fund (DWSRF) Loan Program SRF Project # FS 010275-01 APRIL 2020 PREPARED BY: McCrory Williams INCORPORATED Engineers Surveyors MOBILE, ALABAMA Environmental Information Document Town of Summerdale Waterline Expansion Table of Contents Environmental Information Document A. Existing Environment........................................................................................................1 1. Location of the Project Area B. Existing Facilities...............................................................................................................1 1. Existing Water System Infrastructure and Facilities That Will Supply the Project Area 2. Population Served 3. Conditions of the Existing Treatment/Distribution System C. Need for Proposed Facilities ............................................................................................2 1. Health and Safety 2. Water Quantity Deficiencies 3. Water Quality Deficiencies D. Proposed Facilities and Proposed Funding.....................................................................3 1. Proposed Facilities 2. Proposed Funding Source E. Alternative Analysis……...................................................................................................4 1. Discussion of All Feasible Alternatives a. Alternative #1: No Action b. Alternative #2: 8” Waterline Expansion Improvements on Baldwin Beach Express, County Road 28, and Juniper Street c. Alternative #3: 8” Waterline Expansion Improvements on Baldwin Beach Express, County Road 28, and Juniper Street d. Alternative #4: 8” Waterline Expansion Improvements on Baldwin Beach Express, County Road 28, Juniper Street and Engel Road 2. Choosing an Alternative F. Physical Data....................................................................................................................14 1. Topography of the Town and Project Area 2. Geology of the Town and Project Area 3. Site Hydrology of the Town and Project Area 4. Climate and Precipitation of the Town 5. Floodplains, Floodways, and Wetlands Impact 6. Description of Waterlines to be Constructed G. Environmental Consequences and Mitigative Measures.............................................16 1. Historical and Archaeological Features 2. Endangered Species and Critical Habitat 3. Floodplain, Floodway, and Wetlands 4. Tennessee Valley Authority (Not Applicable 5. Alabama Power Company (Not Applicable 6. Regional Planning Agency (South Alabama Regional Planning Commission) FY 2019 Drinking Water State Revolving Fund (DWSRF) Loan Program SRF Project FS010275-01 Environmental Information Document Town of Summerdale Waterline Expansion 7. Environmental Justice 8. Pollution from Construction Activities 9. Public Participation Appendices Appendix A: Maps Exhibit 1: USGS Quadrangle Map Exhibit 2: Water System Service Area and Facilities Exhibit 3: Aerial Image Vicinity Map Exhibit 4: NRCS Soil Map of the Town of Summerdale Exhibit 5: NRCS Soil Map of Project Area Exhibit 6: FEMA FIRM Map 1 of 2 Exhibit 7: FEMA FIRM Map 2 of 2 Exhibit 8: Vicinity Map with Proposed Waterline Location and Construction Methods Exhibit 9: EJ Screen Report Exhibit 10: EJ Screen Report with map Appendix B: Annual Water Reports Exhibit 1: 2019 Annual Water Report Exhibit 2: 2015-2018 Annual Water Reports Appendix C: Permit Exhibit 1: Baldwin County Highway Department Utility Permit Exhibit 2: ADEM NPDES NOI Appendix D: Agency Concurrence Letters Exhibit 1: Alabama Historical Commission Concurrence Letter Exhibit 2: U.S. Fish and Wildlife Service Concurrence Letter Exhibit 3: U.S. Army Corps of Engineers Concurrence Letter Exhibit 4: South Alabama Regional Planning Commission Concurrence Letter Appendix E: Public Participation Meeting Public Participation Meeting Notice Advertisement FY 2019 Drinking Water State Revolving Fund (DWSRF) Loan Program SRF Project FS010275-01 Environmental Information Document The Town of Summerdale Waterline Expansion A. Existing Environment 1. Location of the Project Area The Town of Summerdale is located east of Mobile Bay in Central Baldwin County, lying south of Interstate Highway 10 and east/west of Highway 59 between Robertsdale and Foley. The project area is in the southeast area of Summerdale within the right-of-way of County Road 28, Baldwin Beach Express and Juniper Street. This area is west of the Alabama/Florida Border and is a part of the Daphne-Fairhope-Foley metropolitan statistical area. Found in Appendix A Exhibit 1 is a USGS Quadrangle map identifying the project site which is along the east side of T7S R4E sections 4 and 9, the north border of section 9 and inside section 9. B. Existing Facilities 1. Existing Water System Infrastructure and Facilities That Will Supply the Project Area Distribution System The system presently has approximately 30 miles of waterlines in its distribution system, one elevated water tank, and one groundwater well with treatment. The Town’s existing distribution system serves 557 customers (approximately 15% of the service area). There is one pressure zone in the system and it is sustained by the overflow elevation of the elevated water tank. East Central Baldwin Water Authority has waterlines in part of the west and northwest portion of the service area and Riviera Utilities has waterlines in a small portion of the very south part of the service area. Refer to Appendix A Exhibit 2 for an overview map of the water system facilities and service area. Elevated Water Storage Tank Centrally located, the elevated water tank’s storage capacity is 200,000 gallons with an overflow elevation of 140 and ground elevation of 110. The tank is filled by water from the groundwater well. Groundwater Well Located in the northwest portion of the service area, the groundwater well has a pumping capacity of 700-gpm. Summerdale pumps an average of 111,000 gallons of water each day. 1 FY2019 Drinking Water State Revolving Fund (DWSRF) Loan Program SRF Project FS010275-01 Environmental Information Document The Town of Summerdale Waterline Expansion Based on a 24-hour day for well operation, the water system has a total well-source capacity of 1.0-MGD. The groundwater source is from the Miocene Aquifer Zone 2. Treatment The groundwater from the well is treated for coliform bacteria and pH adjustment. The treatment process involves chlorination, corrosion control and pH adjustment by lime. Well schematics are available for review or can be provided upon request. Sources The Town of Summerdale currently supplies 100% of the system’s potable water and has emergency interconnections with Robertsdale’s Water System and Riviera Utilities (Foley’s Water System). The locations of the emergency interconnection are shown in the Facilities Map in Appendix A Exhibit 2. 2. Population Served Currently, the Town of Summerdale Water System serves 557 customers (approximately 1,392 people). After this project, an additional 17 customers could be serviced by the Town’s water system rather than from individual wells and more than 200 homes in other parts of the Town’s service area would remain on private wells. Furthermore, with the waterline expansion, there is an opportunity to connect more customers in the future, as well as, an opportunity for an emergency interconnection with an adjacent water system in the future. 3. Conditions of the Existing Treatment/Distribution System The distribution system produces treated potable water that is well within the regulations required by ADEM. The existing distribution system and its facilities are in good and operable condition. C. Need for Proposed Facilities 1. Health and Safety The proposed project will address the lack of water source security in this area. Without waterlines, there is no protection to the individual private well water sources in this area of the 2 FY2019 Drinking Water State Revolving Fund (DWSRF) Loan Program SRF Project FS010275-01 Environmental Information Document The Town of Summerdale Waterline Expansion community. Currently, the residents within this area of the community are supplied potable water from individual private wells (of which can tend to be problematic during power outages and/or hurricanes). The proposed project would eliminate the need for individual private wells and would provide a secure water source (quantity and quality) to this area of the community. 2. Water Quantity Deficiencies With a well-source capacity of 1.0-MGD and an average water use of 111,000 GPD, the system has no water source quantity deficiencies. The average water use in the summer months (June, July and August) and winter months (December, January and February) are 151,593 GPD and 122,425 GPD respectively. With an operating pressure of 52 psi and static pressure of 60 psi, the system has no apparent water pressure deficiencies. With a total storage capacity of 200,000 gallons and 557 customers, the system has more than adequate storage capacity for the required minimum 24-hours supply. Therefore, an increase in capacity is not needed. 3. Water Quality Deficiencies The water system’s treated water is of good quality. The groundwater is treated for coliform bacteria with chlorine and pH adjustment with lime. Any byproduct waste is discharged into the sanitary sewer system. As discussed in the Water System’s Annual Water Reports, the Town’s water system has not experienced any permit violations, nor any administrative/consent orders, nor