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

i; i: I MATRIXNE ORLD Engineering Progress ;■ í. <■ Copy to: Richard Trenk, Esq., McManimon, Scotland, Baumann, LLC Mark Moon, Esq., McManimon, Scotland, Baumann, LLC Mr. Leonard Lepore, Municipal Engineer, Township of West Orange !f :■ i I ATTACHMENTS A Supplemental Rl and RAWP Scope of Work, October 31,2019 ! B Itemized Cost Estimate - RI/RAWP Supplemental Request, October 31,2019 c Terms and Conditions I ■I .I 'I ] : L l ! I ! i F:\20l7\17-296 Selecto Flash PA_SI\Proposal\2020\SelectoFlash Proposal for Supplemental HDSRF RT Work 01062020.docx 3

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M AT RIXNiWORLD Engineering Progress : ' Part I Section H - Work Proposal Supplemental Remedial Investigation and Remedial Action Workplan Scope of Work Selecto Flash, Inc. 18 Central Avenue r Block 9, Lot 36 West Orange, Essex County, New Jersey NJDEP PI No. 027054 October 2019 r 1.0 INTRODUCTION The following Supplemental Remedial Investigation and Remedial Action Workplan Scope of Work (SOW) has been prepared on behalf of the Township of West Orange as part of the request for a Brownfield Development Area (BDA) grant from the New Jersey Department of Environmental Protection’s (NJDEP) Hazardous Discharge Site Remediation Fund (HDSRF). Funding is being requested for the completion of Supplemental Remedial Investigations (RI) and the preparation of a Remedial Action Workplan (RAWP) for the Township-owned property, Former Selecto Flash, Inc. Site (Site) located at 18 Central Avenue in West Orange, Essex County, New Jersey. The approximately 1.33- ¡ acre Site is part of the Central Valley (Orange West) BDA and is located in a mixed industrial, commercial, and residential area of the Township of West Orange. In June 2018 an application for a NJDEP HDSRF Grant to complete the RI for the Site was submitted to the NJDEP. The total of this HDSRF RI Grant was $129,176.80. In February, March, and April of 2019, the following tasks from the original SOW were completed: ! • The completion of a membrane interface probe (MIP) investigation and the collection of soil samples to delineate the horizontal and vertical extent of chlorinated volatile organic compound (CVOCs) impacted soils;

investigation and the collection of soil samples to delineate the horizontal and vertical extent of chlorinated volatile organic compound (CVOCs) impacted soils; • The installation and sampling of five shallow overburden monitoring wells and three vertical delineation (deep) monitoring wells; and • The completion of Soil Precipitation Leaching Procedure (SPLP) analyses on a number of soil samples in order to attempt to develop a Site-Specific Impact to Groundwater Soil remediation Standard (SS-IGWSRS) for trichloroethene (TCE), cis-1,2-diclilorethene (cis-l,2-DCE), and tetrachloroethene (PCE) in accordance with NJDEP’s Guidance (V.3.1, November 2013) (SPLP Guidance). In September 2019, additional soil samples were collected to complete the CVOC delineation. These i samples are currently being evaluated and, based on preliminary results, additional horizontal delineation soil samples maybe needed as part of the Supplemental RI Scope of Work. When Site monitoring wells were sampled in March of 2019, some of the original monitoring wells (installed in in 1987) were not accessible to the use of the Site as a lay-down yard for the neighboring construction Site. In July and August 2019, an effort was again made to locate the original monitoring ■: wells, to determine their condition and if they would need to be reinstalled or rehabilitated. All monitoring wells were ultimately found with the assistance of a metal detector, GPS, and an excavator, Í however, MW-1, MW-3, and MW-5 were damaged beyond repair. In addition, monitoring well, MW-8 (which was installed in 2019) was also found to be damaged beyond repair during the September 2019 1 soil sampling event. As monitoring wells MW-1 and MW-3 are “source area monitoring wells” for the :! Site, it was important to reinstall these monitoring wells in order to complete the groundwater investigation. Monitoring wells, MW-5 and MW-8 are perimeter monitoring wells and are necessary to

stigation. Monitoring wells, MW-5 and MW-8 are perimeter monitoring wells and are necessary to ¡ provide information regaining migration to and from the Site. As the monies allocated for the monitoring ■; well installation and repair had been expended earlier in 2019, Matrix submitted a September 30, 2019, H F:\2017\17-296 Selecto Flash PA_SI\Proposal\2020\HDSRF SelectoFlash RI RAWP SOW Rev 1 .doc ;

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

Supplemental HDSRF Application Page 3 of 5 i Selecto Flash, Inc.____________ efforts to use SPLP results to develop a SS-IGWSRS for TCE were unsuccessful and site specific soil characterization data will be required in order to use the SESOIL model to assess the Impact to ;• Groundwater pathway. Repairs to older wells and groundwater sampling in 2019 has provided additional information regarding the comingled plumes in the area. Based on the results of the 2019 groundwater sampling, Vapor Intrusion (VI) sampling is required at occupied structures within 100 feet of CVOC contamination above NJDEP Vapor Intrusion Groundwater Screening Levels (GWSL). Currently, Selecto Flash wells MW-1R, MW-2, and MW-3R contain exceedances of the VI GWSL for TCE or vinyl chloride. If the Selecto Flash property boundary is used to determine the 100 foot radius, there are currently three homes that are within 100 feet The Supplemental HDSRF Funds will be used to: !- • Complete additional soil sampling to determine the horizontal extent of the impacted soils at the Site; " • Complete additional soil sampling to determine site specific soil characteristics for use in the SESOIL model; • Complete an additional round of groundwater sampling, totaling three groundwater sampling rounds with the RI activities; • Complete required VI sampling at three homes (only one home was included in the original RI SOW); • Dispose of Investigation Derived Waste (IDW); and I • Prepare a Remedial Investigation Report and a Remedial Action Workplan. Soil Investigation Based on soil sampling activities at the Site to date, VOCs including CVOCs were identified at concentrations above the NJDEP RDCSRS, NRDCSRS, IGWSSL, and/or SS-IGWSRS. September 2019 soil sampling was successful in delineating much of the Site to DIGWSSL, and/or SS-IGWSRS. Additional soils sampling and analysis will allow Matrix to complete the horizontal delineation of CVOC impacted soil. Soil sampling