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Home My WebLink AboutTable 2 - Mayo BTV Soil_20170804TABLE 2 BACKGROUND THRESHOLD VALUES FOR SOIL MAYO STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ROXBORO, NC Parameter Reporting Unit PSRG Protection of Groundwater BTVt pH* S.U. NE 4.9 - 6.3 Aluminum mg/kg NE 23700 Antimony mg/kg 0.9 --- Arsenic mg/kg 5.8 6 Barium mg/kg 580 193 Beryllium mg/kg 63 0.82 Boron mg/kg 45 31 Cadmium mg/kg 3 0.72 Calcium mg/kg NE 1210 Chloride mg/kg NE 362 Chromium mg/kg 360,000 62.2 Cobalt mg/kg 0.9 32.9 Copper mg/kg 700 45.7 Iron mg/kg 150 31300 Lead mg/kg 270 9.8 Magnesium mg/kg NE 5590 Manganese mg/kg 65 1230 Mercury mg/kg 1 0.036 Molybdenum mg/kg NE 12.7 Nickel mg/kg 130 29.4 Nitrate (as N) mg/kg NE 36.2 Potassium mg/kg NE 6590 Selenium mg/kg 2.1 1.4 Sodium mg/kg NE 173 Strontium mg/kg NE 33.6 Sulfate mg/kg 250 362 Thallium mg/kg 0.28 --- Vanadium mg/kg 6 75.8 Zinc mg/kg 1200 88.9 Prepared by: JHG Checked by: LWD Notes: S.U. = Standard Unit mg/kg = milligrams per kilogram * = Upper and lower threshold values calculated for parameter NE = Not Established --- = Not applicable; dataset contains zero valid samples t = Indicates value is provisional; dataset contains less than 10 valid samples C:\Users\bjstrickland\AppData\Local\Temp\Table 2 - Mayo BTV Soil_597490\Table 2 - Mayo BTV Soil.xlsx Page 1 of 1