City of South Bend Phase II Wellhead Protection Plan Five Year Update
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City of South Bend Phase II Wellhead Protection Plan Five Year Update Prepared for: City of South Bend Utilities 227 West Jefferson Boulevard South Bend, Indiana 46601 Prepared by: American Structurepoint, Inc. 7260 Shadeland Station Indianapolis, Indiana 46256 (317) 547-5580 October 17, 2014 201400923 EXECUTIVE SUMMARY American Structurepoint, Inc., on behalf of South Bend Water Works (PWSID No. IN5271014), has prepared this Wellhead Protection Plan in accordance with the regulations outlined in 327 IAC 8-4.1 (the “Indiana Wellhead Protection Rule”) for the South Bend Wellfields. The wellfields are located in northeastern St. Joseph County, within the City of South Bend. This wellhead protection plan is largely based on existing wellhead protection practices currently employed by the South Bend Water Works (2000). Local planning for the South Bend Water Works (SBWW) is a collaborative effort between the utility, the St. Joseph County Health Department (SJCHD) and additional supporting agencies. An attempt to orchestrate routine meetings to discuss the wellhead protection strategies proved to be difficult, and therefore LPT meetings were not conducted from 2009 – 2013. However, recent efforts have been made to reinvigorate the LPT activity, with a meeting held on October 3, 2014. Representatives from the SJCHD, the South Bend Fire Department (SBFD), South Bend Wastewater Department, and local environmental professionals met and have agreed to set an annual meeting time for review of wellfield issues. Although there has been a lag in LPT meetings in recent years, the SJCHD has been proactive in wellhead protection, serving as the authority for permitting and inspections of various developments and activity within the wellhead protection areas (WHPA). At future LPT meetings, the SBWW and the SCJHD have agreed to review recent updates in facilities that may pose an environmental threat to the WHPA’s. Information regarding the LPT can be found in Section 1. The 2008 WHPA delineation was completed as part of the City’s Phase II submittal. The WHPA for the South Bend wellfields was delineated utilizing numeric modeling (Modflow). Both a 1-year and 5- year time-of-travel boundary (capture zone) was delineated around the wellfields. The efforts of identifying potential contamination sources and potential management areas are concentrated within the 5-year capture zone, recognized as the official WHPA. A desktop assessment of the aquifer sensitivity to contamination was performed based on several parameters adopted from the DRASTIC method of hydrogeologic potential for contamination (Aller et al., 1985). Based on the input parameters, the Edison, North, Olive, and Pinhook wellfields are determined to be at a high potential for contamination, while the Carriage Hills, Cleveland South and Cleveland North, Erskine, and South wellfields are determined to be at a medium potential for contamination. Information regarding the WHPA delineations and assessment of aquifer sensitivity can be found in Section 2. The Carriage Hills, Edison, Erskine, North, and Pinhook WHPAs are primarily residential and commercial land-use. The Cleveland and Olive WHPAs are primarily industrial and commercial. The PSI methodology, results, and management strategy are discussed in Section 3. The potential source management of the WHPA will continue to be a combined effort of SBWW personnel, including field inspectors and technicians who actively work in and around the wellfields, the SJCHD, and the LPT members. Furthermore, groundwater (raw water) monitoring is routinely performed and will continue to be performed as an additional means of potential source management. The SBWW management plan information is outlined in Section 4. The City of South Bend has an Emergency – Disaster Contingency Plan, and SBWW has cooperated with the local fire department to ensure an emergency response plan is in place for the WHPAs. This plan hinges primarily on effective communication between local emergency responders and the 1 201400923 SBWW personnel. Furthermore, SBWW maintains multiple different sources of supply (8 wellfields interconnected), as well as a connection with Mishawaka Water, to ensure an adequate supply in the event of an emergency. SBWW also maintains in-system storage that can sustain system demands and pressure during an emergency event. Detailed contingency plan information is outlined in Section 5. SBWW has implemented wellhead protection activities to meet the Phase II implementation requirements set forth in the Wellhead Protection Rule. The City of South Bend Phase II Wellhead Protection Plan Five Year Update, as outlined in this report, is primarily based on the ongoing wellhead protection activities. This plan and the strategies herein, if implemented effectively, will continue to protect and maintain a high-quality groundwater resource for the City of South Bend. 2 201400923 ABBREVIATIONS AST Aboveground Storage Tank BMP Best Management Practice CPWSS Community Public Water Supply System DRASTIC Depth to water; Recharge; Aquifer media; Soil media; Topography; Impact of the vadose zone; Conductivity of the aquifer EPA Environmental Protection Agency GIS Geographic Information System HAZMAT Hazardous Materials IAC Indiana Administrative Code IDEM Indiana Department of Environmental Management LEPC Local Emergency Planning Committee LPT Local Planning Team LUST Leaking Underground Storage Tank NA Not Available NFA No Further Action NPDES National Pollutant Discharge Elimination System ORD Ordinance PCB Polychlorinated Biphenyl PCE Tetrachloroethylene PSC Potential Source of Contamination PSI Potential Source Inventory PWSID Public Water System Identification RCRA Resource Conservation and Recovery Act SBFD South Bend Fire Department SBWW South Bend Water Works SJCHD St. Joseph County Health Department SQG Small Quantity Generator SVOC Semi-Volatile Organic Compound TCE Trichloroethylene TQP Technically Qualified Person USGS United States Geological Survey UST Underground Storage Tank VOC Volatile Organic Compound VFC Virtual File Cabinet VFW Veterans of Foreign Wars VRP Voluntary Remediation Program WHPA Wellhead Protection Area WHPP Wellhead Protection Plan 3 201400923 INTRODUCTION The Indiana Wellhead Protection Program and rule (327 IAC 8-4.1) outlines five basic categories for Community Public Water Supply System (CPWSS) wellhead protection plans. These areas include the following: 1. Local Planning Team (LPT) 2. WHPA Delineation 3. Identification of Potential Sources of Contamination (Source ID) 4. Potential Source Management 5. Contingency Planning This report serves to document the wellhead protection implementation and five year update by the SBWW and to outline the plan for continued protection of the wellfields with respect to the components outlined by IDEM. Wellfield Description See attached exhibits for maps of the following wellfields. The Carriage Hills Wellfield includes Wells 3 and 4, and is located within a residential subdivision, approximately 0.17-mile east of Ironwood Drive. The Cleveland South and Cleveland North Wellfields include Wells 1 through 6. Cleveland North Wellfield is located approximately 0.10-mile north of Cleveland Road along Patricia Lane. Cleveland South Wellfield is located approximately 150-feet south of Cleveland Road, north of Interstate 80. The Edison Station Wellfield includes Wells 1A to 4A, and is located within Edison Park, just east of North Ironwood Drive. The Erskine Wellfield includes Well 2 and is located approximately 0.56-mile north of US Highway 20 on the western portion of the Erskine Park Golf Course. The North Station Wellfield is located west and south of a meander of the St. Joseph River, approximately 300-feet east of State Road 933. The North Station Wellfield includes Wells 1A to 3A and 4A. The Olive Station Wellfield is located in the southwestern portion of South Bend, on the southwest corner of Olive Street and Sample Street. Olive Station Wellfield includes Wells 1 through 6. The Pinhook Station Wellfield is located in the northwestern portion of South Bend, just west of the St. Joseph River and approximately 0.57-mile south of Interstate 80. The Pinhook Station Wellfield includes Wells 1 through 5. The South Wellfield includes Wells 4A and 5 and is located approximately 0.8-mile north of the St. Joseph Valley Parkway and approximately 900-feet west of Main Street. Exhibits 1 and 2 provide the location of the wellfields, while Exhibit 3 shows a larger scale aerial view of the wellfields and production well locations. 4 201400923 SECTION 1 LOCAL PLANNING TEAM The SBWW established an LPT in 1999 consisting of the utility personnel, SJCHD, SBFD, and other local agencies. However, an attempt to maintain a routine schedule proved difficult, and therefore LPT meetings were not conducted from 2009 - 2013. However, recent efforts have been made to reinvigorate the LPT activity, with a meeting held on October 3, 2014. American Structurepoint personnel met with SBWW representatives, Mr. John Wiltrout, Mr. Ed Herman, and Ms. Kara Boyles, to discuss the SBWW Phase II WHPA five year update and the recent SBWW activity in regards to wellhead protection. Mr. Wiltrout indicated the SJCHD performed reviews for facilities within the SBWW wellfields (Appendix 3) as a result of a local ordinance. An LPT meeting was conducted on October 3, 2014, and attendees are included in Table 1-1. Meeting minutes from the LPT’s October 3, 2014 meeting is included in Appendix 1. Table 1-1 SBWW Local Planning Team