22-20 Exhibit-Authorizing Matrix to Utilize Supplemental HDSRF Grant Funding to Complete the Remedial Investigation at the Selecto Flash.pdf

Supplemental HDSRF Application Page 2 of 5 Selecto Flash, Inc.____________ i request for a reallocation of HDSRF funds for the immediate rehabilitation of the original monitoring wells, MW-1, MW-3, and MW-5, and new monitoring well, MW-8. The tasks that were removed from the original RI SOW to allow for the well rehabilitation include the i completion of the RIR and Remedial Action Workplan (RAWP), the completion of vapor intrusion sampling, and the disposal of Investigation Derived Waste (IDW). These tasks have been added to the SOW for this Supplemental HDSRF Grant. In addition, the Supplemental HDSRF Scope of Work includes the costs for two additional monitoring well repairs, the abandonment of three monitoring wells, two additional days of soil sampling, and one additional round of groundwater sampling. The total ; requested in the Application for a Supplemental HDSRF Grant is $44,718.00. See Part I Section I - Cost Estimate for costs. This SOW has been developed in compliance with the requirements of the Site Remediation Reform Act (SRRA), NJ.S.A 58:10C-1 et seq., the Administrative Requirements for the Remediation of Contaminated Sites (ARRCS), N.J.A.C. 7:26C, the Technical Requirements for Site Remediation (TRSR), N.J.A.C. 7:26E, and applicable NJDEP Guidance Documents. Oversight of investigation activities will be conducted by a Matrix Licensed Site Remediation Professional (LSRP). The completed RIR and RAW will present a plan for the remediation and redevelopment of the subject Site. 2.0 TECHNICAL APPROACH The Township of West Orange acquired the property at 18 Central Avenue (Block 9; Lot 36) in West Orange, New Jersey through foreclosure in April 2016. The Site is identified by the NJDEP as PI No. 027054 (Selecto Flash, Inc.) with Case Tracking No. 95-10-18-1521-31. The former buildings at the Site i were demolished in the fall of 2017. A Preliminary Assessment (PA) and Site

027054 (Selecto Flash, Inc.) with Case Tracking No. 95-10-18-1521-31. The former buildings at the Site i were demolished in the fall of 2017. A Preliminary Assessment (PA) and Site Investigation (SI) were previously completed at the Site to evaluate the environmental conditions. The PA Report for the Site was submitted to the NJDEP on February 23, 2018 and the SI Report on March 2, 2018. Environmental investigations completed at the Site during a review of historical investigations, the SI, and RI activities to date (original RI HDSRF Grant) have identified the presence of contaminants, including CVOCs, semi­ volatile organic compounds (SVOCs), and metals in soil at concentrations exceeding the NJDEP’s Residential or Non-Residential Direct Contact Soil Remediation Standards (RDCSRS or NRDCSRS), the Default Impact to Groundwater Soil Screening Levels (IGWSSL), and/or the SS-IGWSRS. Furthermore, select VOCs, specifically CVOCs, and SVOCs were detected in groundwater at concentrations above the Groundwater Quality Standards (GWQS). The implementation of the original 2018 HDSRF Grant RI SOW and this Supplemental RI SOW will ; result in: i • The horizontal and vertical extent of soil and groundwater impacts; • Development of a Site Specific Impact to Groundwater Soil Remediation Standard (SS- IGWSRS) for CVOCs in Site soils; í • The characterization of any vapor intrusion impacts in or beneath nearby structures; and • The completion of a RIR and RAWP for the subject Site, outlining appropriate cleanup strategies for soils, groundwater, and vapor intrusion. i Remedial Investigation (RI) activities conducted on-Site between January 2019 and October 2019 achieved horizontal delineation of CVOC exceedances of RDCSRS and NRDCSRS in all directions. In addition, vertical delineation of the impacted soils has been achieved above the saturated zone. Initial F:\2017\17-296 Selecto Flash PA_Sl\Proposal\2020\HDSRF SelectoFlash

In addition, vertical delineation of the impacted soils has been achieved above the saturated zone. Initial F:\2017\17-296 Selecto Flash PA_Sl\Proposal\2020\HDSRF SelectoFlash RI RAWP SOW Rev 1 .doc