Environmental Restrictive Covenant - Drewry’s Brewery at 1408 Elwood

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OmniPlex, South Bend — Political Subdivision Comfort Letter BFD #4000022 June 29, 2023 Page 5 of 12 analyzed for volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), Resource Conservation and Recovery Act (RCRA) 8 metals, and PCBs. After completion of the soil borings, each soil boring was completed as a temporary groundwater piezometer. The piezometers were installed into the first encountered groundwater aquifer from approximate depths between 20 to 25 feet bgs. A total of 45 grab groundwater samples were collected and analyzed for VOCs, PAHs, RCRA 8 metals, and PCBs. No groundwater samples were collected from 13-2 due to insufficient groundwater recovery or B-18 due to refusal at a shallow depth during soil boring advancement. Concentrations of several PAHs were detected in shallow soil (0-2 feet bgs) that exceeded their respective RSPLs, CSPLs, and/or XSPLs. Concentrations of lead and arsenic were also detected in soil above their respective RSPLs and/or CSPLs. No other constituents analyzed in soil were detected at levels above applicable R2 published levels. Refer to Table 1, below, for a summary of soil analytical data above applicable R2 published levels. Laboratory results detected trichloroethylene (TCE) concentrations in two groundwater samples that exceeded its GWPL. In addition, several PAHs were detected in multiple groundwater sampling locations at concentrations exceeding their respective GWPLs. PCB Aroclor 1260 was detected in one groundwater sample at a concentration that exceeded its GWPL. Also, laboratory detection limits for several groundwater samples detected PCB-1221, PCB-1232, PCB-1242, PCB-1248, PCB-1254, and PCB- 1260 at concentrations higher than their respective GWPLs, rendering the data inconclusive as to actual contaminant levels. Additionally, methylene chloride was detected in five groundwater samples at concentrations exceeding its GWPL. The presence of methylene chloride in several of the groundwater samples analyzed indicates the likelihood that this is a laboratory artifact and not a contaminant actually present on -Site. No other constituents analyzed in groundwater were detected at levels above applicable R2 published levels. Refer to Table 2, below, for a summary of groundwater analytical data above applicable R2 published levels.