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FY 17 Cleanup - 8 average and maximum concentration for each compound. Also include petroleum in the table. If distinct areas of contamination are present at the site, please describe separately. (NOTE: It is acceptable to provide an overview with estimated average and maximum concentrations if the amount of analytical data is overwhelming.) (Note: for PAHs, please provide individual compound concentrations or Benzo(a)pyrene equivalent concentrations for the carcinogenic PAH compounds.) Compound Tier I SRV (residential) Average Concentration Maximum Concentration DRO 100 mg/kg* 172.3 mg/kg 364 mg/kg GRO 100 mg/kg* 139.0 mg/kg 139.0 mg/kg *Based on MPCA criteria for unregulated excess fill. E. Please do the same as in D. for groundwater. Compound HRL Average Concentration Maximum Concentration PCE 5.0 अg/L 63.3 अg/L 124 अg/L Trichloroethene 2.0 अg/L 35.8 अg/L 35.8 अg/L cis-1,2-dichloroethene 50 अg/L 124 अg/L 124 अg/L Benzene 2 अg/L 3.6 अg/L 3.6 अg/L Naphthalene 300 अg/L 585 अg/L 585 अg/L 1,3,5-Trimethylbenzene 100 अg/L 155 अg/L 155 अg/L Total xylene 300 अg/L 325 अg/L 325 अg/L E. If groundwater at the site is contaminated, note the geologic makeup of the affected aquifer (sand/gravel, till, lacustrine clay, etc.), and the estimated average linear velocity (be sure to indicate how this number was determined). The property contains till comprised of 23 feet of clay underlain by 24 feet of sand grading to gravel. Perched groundwater was encountered at depths ranging from 8-20 feet in soil borings. The depth to the regional water table is expected to be approximately 70 feet below ground surface. The estimated linear velocity for the property is 50 feet/day based on observations of grain size, soil types, and porosity, hydraulic conductivity, and the MPCA soil leaching value calculator. G. Please do the same as in E. for soil vapor. Compound ISV circle one 33X ISV Maximum Concentration 60