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Quarterly Monitoring Report- Third Quarter 2015 Page 5 ' OAK RIDGE WINERY WKA No. 6364.08 August 25, 2015 ' 6.2 Site Groundwater Quality ' Results of third quarter 2015 analysis of groundwater from the Oak Ridge Winery process waste treatment facility compare to applicable water quality standards as follows: ' • Ammonia as nitrogen does not have a water quality standard established by MRP Order No. 05-01-172 or by EPA MCLs; however, ammonia contributes to ' total nitrogen. Ammonia as nitrogen was detected in concentrations ranging between 0.32 and 7.2 mg/L in MW1, MW2, MW3, and MW4. ' • Potassium does not have a water quality standard established by MRP Order No. 05-01-172 or by EPA Primary or Secondary MCLs; however, it contributes to total dissolved solids levels. Potassium was detected in water samples from ' each of the MW1, MW2, MW3 and MW 4 monitoring wells at concentrations between 3.5 and 27 mg/L. ' • Nitrate-as-nitrogen was not detected in any groundwater sample above the laboratory reporting limit of 0.50 mg/L. • Groundwater pH has a Secondary MCL acceptable range, previously discussed between 6.5 to 8.5. The water samples in MW1, MW2, MW3, and MW4 ranged in pH from 6.46 pH units to 6.68 pH units. The pH in MW4 (6.46)falls below the ' Secondary MCL acceptable range. • TKN as nitrogen does not have a defined acceptable or actionable limit in ' groundwater; however, concentrations may contribute to TDS and may produce oxygen deficient groundwater conditions. TKN is also indicative of incomplete oxidation of bio-available nitrogen compounds discharged to the process ' wastewater treatment system. TKN was detected in samples collected from all wells this quarter at concentrations ranging between 0.45 to 6.7 mg/L. ' • TDS concentrations in samples collected for this monitoring event were below the criterion established by MRP Order No. 05-01-172 (450 mg/1) with concentrations ranging between 73 to 260 mg/L. ' • Trihalomethanes were not detected above their respective laboratory reporting limit of 0.50 pg/L.