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

i ! Supplemental HDSRF Application Page 4 of 5 Selecto Flash, Inc.___________ The groundwater investigation will include the gauging of all on-site monitoring wells (MW-1R, MW-2, MW-3R, MW-4, MW-4D, MW-5R, MW-7, and MW-8R) and off-site monitoring wells (MW-6, MW-9, MW-9D, MW-10, MW-11, and MW-11D). One additional round of groundwater samples will be ! collected from the on-site and off-site monitoring wells via low flow sampling technique. During purging, field measurements including depth to groundwater, dissolved oxygen content, turbidity, pH, temperature, conductivity, and ORP will be collected for all monitoring wells. The groundwater samples will be analyzed for TCL VOCs+15. For QA/QC purposes, one duplicate sample and up to three field blanks will be collected and analyzed for TCL VOCs+15. One trip blank sample will be collected for TCL VOCs+15 analysis, per groundwater sampling event. In addition, the repair of up one shallow overburden monitoring well and abandonment of up to three ; monitoring wells (damaged monitoring wells) are budgeted. The cost estimates also include the management and disposal of the soil cuttings and well development water for all the monitoring wells installed on the Site. The disposal of non-hazardous investigative derived waste (IDW), up to 22, 55- gallon drums, is included in this cost estimate. Following the installation of any additional monitoring wells, the wells will be surveyed. Vapor Intrusion This estimate includes funds for the VI investigation of three properties that are within 100 feet of the Selecto Flash Site. Based on discussions with the LSRP for the adjacent Biddelman, Inc. Property (SRP PI No. G000006148), Mr. Joseph T. Jacobsen, a VI investigation was completed for several of the homes surrounding the Biddleman Site, and Matrix will be obtaining copies of this documentation from NJDEP. However, We do not anticipate that there will be overlap between the Biddelman VI investigation and the proposed Selecto Flash VI investigation. The original RI SOW

from NJDEP. However, We do not anticipate that there will be overlap between the Biddelman VI investigation and the proposed Selecto Flash VI investigation. The original RI SOW included the collection of three samples only. There are currently three homes located within the 100 foot trigger distance from the exceedances to the VI GWSL at Selecto Flash and a total of nine samples is anticipated. These samples will be analyzed for TO-15 (NJDEP-SRP Low Level USEPA TO-15 Method). In addition, a vapor intrusion evaluation and report will be completed, which includes NJDEP Full Data Deliverables Form. Remedial Investigation Report and Remedial Action Workplan The results will be reported as part of the Remedial Investigation Report (RIR). The report will be prepared in accordance with N.J.A.C. 7:26E-4.8. The RIR will discuss the results of the sampling and will include the following: ; Results of all analyses, copies of laboratory data sheets and conversion of the laboratory '! deliverable to the required electronic data deliverables pursuant to N.J.A.C. 7:26E-2.1; ! A summary table of analytical methods and quality assurance indicators pursuant to N.J.A.C. 7:26E-2.2; Sample summary tables of all analyses, including sample location, media, sample depth and field and lab identification numbers pursuant to N.J.A.C. 7:26E-3.13(c)3. The summary tables will i identify contaminant concentrations exceeding the applicable remediation standards, samples with elevated reporting limits (RLs) exceeding their applicable remediation standard will be identified and explained, and the remaining requirements pursuant to N.J.A.C. 7:26E-3.13(c)3 will be met; ! Field data from each sampling point, including field instrument readings for each sample will be generated and presented in the Summary Report;

Field data from each sampling point, including field instrument readings for each sample will be generated and presented in the Summary Report; Figures will be prepared indicating the results of all sampling events. Figures will identify contaminant exceedances above their respective remedial standard by contaminant and depth; i F:\20i7\17-296 Selecto Flash PA_SI\ProposaI\2020\HDSRF SeJectoFlashRI RAWPSOWRev 1 .doc ! i