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Southside Chattanooga Lead Site, Remedial Investigati UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION4 -~ ­ Science and Ecosystem Support Division Field Services Branch ~ J 980 College Station Road Athens, Georgia 30605-2720 May 23 , 2018 4SESD-FSB MEMORANDUM SUBJECT: Southside Chattanooga Lead Site Remedial Investigation Work Plan Chattanooga, Tennessee SESD Project Number 18-0271 FROM: Timothy Simpson, Life Scientist Superfund and Air Section THRO: John Deatrick, Chief JD Field Services Branch . TO: Robenson Joseph, Remedial Project Manager Superfund Sustainability and Restoration Branch Superfund Division Attached is the Remedial Investigation Work Plan for the Southside Chattanooga Lead Site in Chattanooga, Tennessee. Field work began the week of May 14, 2018. If you have any questions, please call me at (706) 355-8736. Attachment Remedial Investigation Work Plan Southside Chattanooga Lead Site United States Environmental Protection Agency Region 4 Remedial Investigation Work Plan Southside Chattanooga Lead Site Chattanooga, Hamilton County, Tennessee May 23, 2018 SESD Project Number 18-0271 Prepared for: Prepared by: Robenson Joseph, Remedial Project Manager Timothy Simpson, Life Scientist US EPA Region 4 US EPA Region 4 Superfund Division Science and Ecosystem Support Division 61 Forsyth Street, SW 980 College Station Road Atlanta, Georgia 30303 Athens, Georgia 30605 Page 1 of 23 Remedial Investigation Work Plan Southside Chattanooga Lead Site Approvals: SESD Field Team Leader o s/1'-If Z.ol ~ Timothy Simpson, ife Scientist Date Field Services Branch Approving Official: John Deatrick, Chief Date Field Services Branch Page 2 of23 Remedial Investigation Work Plan Southside Chattanooga Lead Site Table of Contents 1.0 INTRODUCTION .............................................................................................................................4 1.1 Scope of Work ................................................................................................................................4 1.2 Site Background .............................................................................................................................4 1.3 Previous Investigations ..................................................................................................................5 2.0 PROJECT MANAGEMENT .............................................................................................................6 2.1 Project Organization .......................................................................................................................6 Table 1: Project Personnel ...................................................................................................................6 2.2 Technical Approach .......................................................................................................................7 2.2.1 Evaluation of Existing Data ...................................................................................................7 2.2.2 Identification of Applicable or Relavant Appropriate Requirements ....................................7 2.2.3 Conceptual Site Model ...........................................................................................................8 2.2.4 Remedial Action Objectives ...................................................................................................8 2.3 Environmental Setting ....................................................................................................................8 2.3.1 Geology ..................................................................................................................................8 2.3.2 Hydrology ...............................................................................................................................9 2.4 Field Investigation and Data Acquisition .....................................................................................10 2.4.1 Soil Sampling .......................................................................................................................10 2.4.2 Groundwater Sampling ........................................................................................................11 2.4.3 Potable Well Survey .............................................................................................................11 2.4.4 Surface Water and Sediment Sampling ................................................................................11 2.4.5 Macro Invertebrate Sampling ...............................................................................................12 2.5 Data Review, Verification and Validation ...................................................................................12 2.6 Data Management ........................................................................................................................12 2.7 Risk Assessment ...........................................................................................................................13 3.0 FINAL REPORTS ...........................................................................................................................14 4.0 REMEDIAL INVESTIGATION SCHEDULE ...............................................................................15 Table 2: Remedial Investigation Schedule ............................................................................................15 5.0 QUALITY CONTROL ....................................................................................................................15 CONCEPTUAL SITE MODELS AND SITE FIGURES ........................................................................ 17 Figure 1: Conceptual Site Model - Human Health Risk Assessment .................................................. 19 Figure 2: Conceptual Site Model - Ecological Risk Assessment ........................................................ 20 Figure 3: Conceptual Site Model - Hydrogeology and Transport Pathways ....................................... 21 Figure 4: Southside Chattanooga Lead Site ......................................................................................... 22 Figure 5: Soil Types ............................................................................................................................. 23 Page 3 of 23 Remedial Investigation Work Plan Southside Chattanooga Lead Site 1.0 INTRODUCTION The United States Environmental Protection Agency (EPA) will conduct a Remedial Investigation (RI) at the Southside Chattanooga Lead (SCL) Site in Chattanooga, Hamilton County, Tennessee. The Site consists of residential neighborhoods and communal areas (such as schools, parks, and daycare facilities) where lead-impacted foundry material has been used as fill material and topsoil. The investigation will focus on eight neighborhoods in the downtown Chattanooga area: Alton Park, Cowart Place, East Lake, Highland Park, Jefferson Heights, Oak Grove, Richmond, and Southside Gardens. The investigation will be conducted to define the nature and extent of lead contamination at the site. The collected data will also be utilized to assess the potential human and ecological risks that may be resulted from exposure to the contaminated materials. 1.1 Scope of Work This work plan describes EPA’s technical approach, schedule, and quality control requirements for completing the RI. Field activities will be in accordance with the Quality Assurance Plan (QAPP), Southside Chattanooga Lead Site, April 26, 2018. The QAPP describes procedures that will be followed for organizing, storing, and securing the data collected. The overall objective of the QAPP is to ensure that project objectives are met through the generation of high-quality, reliable data to characterize the extent of contamination at the SCL site. The QAPP conforms to the requirements of EPA’s Guidance for Conducting Remedial Investigations and Feasibility Studies Under CERCLA, Interim Final, EPA/540/G-89/004 (EPA, 1988). It addresses EPA requirements for preparing QAPPs in accordance with the EPA Requirements for Quality Assurance Project Plans (QA/R-5) March 2001, and supplemented by the EPA Guidance for Quality Assurance Project Plans (EPA QA/G-5), December 2002. The QAPP is designed to be used in conjunction with project-specific Sample and Analysis Plans (SAPs) that document the investigative sampling and analysis tasks that will be performed to support decisions and EPA, Region 4, SESD Field Branches Quality System and Technical Procedures. The activities depicted in the QAPP are accredited under the EPA Region 4 Science and Ecosystem Support Division (SESD) ISO/IEC 17025 accreditation issued by the ANSI-ASQ National Accreditation Board. 1.2 Site Background Since the late 19th century, approximately 60 foundries operated in Chattanooga. Most of the foundries specialized in melting and casting metal into desired shapes. Molds made of a sand mixture were used to create the shapes. After the desired shapes were made, the sand molds were broken and most of the sand mixture was reused. Some fine particles from the sand mixture could not be reused and were considered a by-product, or waste, called spent foundry sand. Past foundry operations generated large quantities of waste byproduct, consisting of spent foundry sand, dust from collection systems, slag, coal, spent casting refractory material, off-spec products, and other miscellaneous wastes. Anecdotal information indicates that it was common practice in the early 20th century for foundries in Chattanooga to give residents their excess spent
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