100-25 Exhibit A-RES 350-23 RI.pdf

| t | | | cea eve ASSOCIATES April 14, 2023 Mr. John Gross Page 4 of 8 Township Business Administrator/CFO Re: Department of Public Works af 25 Lakeside Avenue — Remedial Investigation ~ AOC-19 - Groundwater Contamination from Unknowr/OfFSite Chlorinated Solvent Sources Up to fifty (50) soil borings will be advanced to depths that range between approximately five (5) to twenty (20) feet below ground surface (ft bgs). CME personnel will log al! borings and will utilize a photoionization detector (PID) to screen for the presence of volatile organic compounds (VOCs). All boring locations will be surveyed using GPS equipment. The soil samples at each AOC location will be analyzed for different parameters, including EPA Target Compound List volatile organic compounds (TCL VO+TICs), semi yolatile organic compounds (TCL SVO+TICs) with a library search of the fifteen (15) highest Tentatively Identified Compounds (TICs) or PAHs, PCBs and TAL Metals. All soil samples will be submitted to a NJDEP-certified analytical laboratory for analysis. One (1) field blank sample will also be collected each day of field activities. The field blank(s) will be handled and transported in the same manner and analyzed for the same parameters as the samples collected that day. The samples will be collected and equipment will be decontaminated in accordance with the NIDEP Field Sampling Procedures Manual (August 2005 edition, revised April 2011). All samples will be submitted to a NELAP-aceredited and NJDEP-certified laboratory for analysis ona standard turnaround time. Upon receipt of laboratory test results, CME will compare all groundwater sample results against the current NIDEP Groundwater Quality Standards (GWQS) for Class H-A Aquifers (N.LA.C. 7:9C) and the NIDEP Vapor Intrusion Screening Levels (VISL). All the field work implemented at the Site during the site investigation will be supervised; field screening techniques will be performed in accordance with the NJDEP Technical Requirements for Site Remediation (N.J.A.C. 7:26E) to determine the potential presence of impacted materials. ‘TASK 2: GROUNDWATER INVESTIGATION ~ MONITORING WELLS INSTALLATION Four (4) monitoring wells (MW-12 through MW-15) will be installed to assist in the proposed remedial action monitoring at the site. CME will retain a licensed driller to install the monitoring wells with 2-inch diameter

wells (MW-12 through MW-15) will be installed to assist in the proposed remedial action monitoring at the site. CME will retain a licensed driller to install the monitoring wells with 2-inch diameter PVC; three wells will be constructed to a depth of approximately (20)