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6/3/2022 Table 2 - Groundwater Analytical Results <br />Phase II Environmental Site Assessment <br />2534 Kenzie Terrace <br />St. Anthony, MN <br />WSB Project No. 020198-000 <br />Sample ID GW-1 GW-4 <br />Water Level at Time of Drilling (ft. below grade) 22.70 11.80 <br />Sample Date 04/22/2022 04/22/2022 <br />Benzene 71-43-2 <0.500 45.9 2 HRL 09 5 2 <br />n-Butylbenzene 104-51-8 <1.00 1.67 NE NE NE <br />sec-Butylbenzene 135-98-8 <1.00 2.79 NE NE NE <br />1,2-Dichloroethane 107-06-2 <1.00 68.2 1 HRL 13 5 1 <br />Ethylbenzene 100-41-4 <1.00 3.89 40 HBV 20 700 5 <br />Isopropylbenzene (Cumene) 98-82-8 <1.00 4.76 300 HRL 93 NE NE <br />N-Propylbenzene 103-65-1 <1.00 3.63 NE NE NE <br />All Other Analyzed VOCs NA ND ND NA NA NA <br />Arsenic 7440-38-2 <2.00 2.36 NE 10 NE <br />Barium 7440-39-3 141 352 <br />2,000 HRL 93 2,000 NE <br />All Other Analyzed RCRA 8 Metals NA NA ND NA NA NA <br />DRO STL00143 245 1220 200 <br />GRO STL01887 <100 378 200 <br />Notes: <br />All results reported in micrograms per liter (µg/L) <br />HRL = Health Risk Limit <br />MCL = Maximum Contaminant Level (MCL) <br />BOLD = Concentration is greater than or equal to laboratory reporting limit <br />< = Analyte not detected at concentrations greater than or equal to the laboratory reporting limit <br />ND = Not detected above laboratory reporting limits <br />NA = Not Applicable / Not Analyzed <br />NE = Not Established <br />1 = The Minnesota Department of Health (MDH) has established health based guidance to evaluate drinking water exposure risks. Values are shown with the types of guidance <br />and the year established. <br />3 = Discharge Limits shown are the most stringent values indicated in the Minnesota Pollution Control Agency (MPCA) National Pollutant Discharge Elimination System <br />(NPDES)/State Disposal System document wq-wwprm9-25 dated 2/2/2017 <br />MPCA Criteria for Remedial Investigation: <br />1,000 µg/L <br />CAS # <br />Health Based Risk <br />Guidance Value (µg/L) <br />1 <br />WSB <br />MPCA NPDES <br />General Industrial <br />Pump-Out Permit <br />Criteria (µg/L) 3 <br />EPA Maximum <br />Contaminant Level <br />(µg/L) 2 <br />Volatile Organic Compounds (VOCs) <br />Diesel Range Organics (DRO) and Gasoline Range Organics (GRO) <br />Resource Conservation and Recovery Act (RCRA) 8 Metals <br />Pink = Value exceeds MPCA criteria for remedial investigation of 1,000 µg/L DRO/GRO <br />Blue = Value exceeds established MDH guidance value <br />Brown = Value exceeds EPA MCL <br />Red = Value exceeds MPCA NPDES General Industrial Pump-Out Permit criteria <br />2 = Values are from the Environmental Protection Agency (EPA) National Primary Drinking Water Regulations document EPA 816-F-09-004, dated May 2009. <br />Page 1 of 1