52-22 Agreement for Environmental Services Remedial Investigation Activities and Reporting.pdf

MATRIXNEWORLD Engineering Progress Vapor Intrusion Investigation. if required Based on the results of groundwater sampling, vapor intrusion sampling maybe required at occupied structures within 100 feet of the CVOC contamination that is above the NJDEP's Vapor Intrusion Groundwater Screening Levels (VIGWSL). Therefore, during the RI activities, Matrix will complete vapor intrusion sampling at up to four off-site properties, if required. Before sampling, Matrix will complete an access agreement with the Property owner. Matrix will also conduct a building survey and complete the applicable sections of the NJDEP Building Survey and Sampling Form. A total of three indoor air samples and one background (ambient) air sample will be collected per property. The samples will be submitted to the laboratory on hold pending the results of the sub-slab sampling. If the sub-slab soil gas samples, which will be collected the following day, contain contaminant concentrations at levels exceeding the VIGWSL, the indoor air samples will be analyzed for VOC+15 and naphthalene using USEPA Method TO-15. Following the completion of the indoor air sampling, sub-slab soil gas samples will be collected. Two or three sub-slab soil gas samples will be collected from each property, and the sub-slab air samples will be analyzed for VO+15 and naphthalene using USEPA Method TO-15. VI sampling activities are expected to be completed in 2 days, since the indoor air samples will be collected prior to the collection of the sub-slab soil gas samples. The indoor air samples are collected over a 24-hour sample period. Following the completion of the VI investigation and receipt of analytical results, a VI Investigation Letter will be prepared. The report will summarize investigation activities, results, findings, conclusions, and tecommendations for the property. A copy of the report will also be submitted to the NJDEP, tenants, Property owner, West Orange Health Department, and the New Jersey Department of Health and Senior Services (if the indoor air samples are analyzed) TASK 3: REMEDIAL INVESTIGATION REPORT AND REMEDIAL ACTION WORKPLAN PREPARATION AND SUBMITTAL Following the receipt and evaluation of the soil, groundwater, and vapor intrusion data, a Remedial Investigation Report (RIR) and Remedial Action Workplan (RAW) and associated forms will be prepared and will summarize the

and evaluation of the soil, groundwater, and vapor intrusion data, a Remedial Investigation Report (RIR) and Remedial Action Workplan (RAW) and associated forms will be prepared and will summarize the results of the remedial investigation and proposed remedial action. The report will consist of figures, tables, conclusions, and recommendations. Following a review of the Draft Report by the Township of West Orange, comments will be incorporated to prepare a Final Remedial Investigation Report/Remedial Action Workplan that will be submitted to NJDEP. The following forms may be required during the RI/RAW: e Case Inventory Document (CID) « Authorization to Submit a Report Through NJDEP Online * Cover/Certification Form « CEA Fact Sheet « Updated Receptor Evaluation including well search spreadsheet « Alternative or New Remediation Standard and/or Screening Level Application Form including the Remediation Standard Notification Spreadsheet Full Laboratory Data Deliverables Form Monitoring Well Certification Form A ~ As-Built Certification Monitoring Well Certification Form B — Location Certification Site and Contact Information Update Form TASK 4: PRELIMINARY ENGINEERING AND PROJECT DOCUMENTS REVIEW lf needed, Matrix will provide consultation with respect to the potential redevelopment of the Site This scope may include, but is not limited to, review of the site's development constraints, review of proposed site design documents prepared by the site's developer, review of any proposed redevelopment ordinance/plan and attending meetings as necessary. Matrix will provide the above services on an as needed basis and therefore it is not possible to provide a lump sum fee for this item. It is Proposed to invoice work under this item hourly with a limit provided below. If the limit is reached and additional work is still required, Matrix will F:\2021121-1041 - Township of West Orange Phase | ESAs Downtown Corridor\Proposal\Remedial Investigation - 55 Lakeside\RI Proposal_S5 Lakeside Avenue-FINAL_REV docx 4