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

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 ;