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A submersible pump is now lowered into the well and used to evacuate three (3) well <br />volumes (testing has confirmed that the parameters of temperature, pH and electrical <br />conductivity do "stabilize" within this interval), calculated using the static water level, <br />total depth of the well and the casing volume. Once the three volumes have been <br />pumped, a new static water level measurement is recorded, and the previously <br />described bailer sampling procedure is repeated, except that this time the seventh (and <br />if needed, an eighth) bailer volume is used to fill sterile sample containers provided by <br />the laboratory. These samples are sealed, marked for identification by the lab, and <br />stored in insulated containers for transport to the laboratory at the earliest opportunity. <br />The field sample is again analyzed for temperature, pH and electrical conductivity, and <br />these values are recorded in the field book which is retained on site. <br />Immediately following field testing the lab samples are transported to the laboratory where <br />they are filtered and prepared for analysis. The following are the sampling parameters: <br />Calcium — dissolved (mg /L) <br />Iron — dissolved (mg/L) <br />Magnesium — dissolved (mg /L) <br />Manganese — dissolved (mg /L) <br />Molybdenum — dissolved (mg /L) <br />Sodium — dissolved (mg /L) <br />Selenium — dissolved (mg/L) <br />Lead — dissolved (mg /L) <br />Barium— dissolved (mg/L) <br />Arsenic —dissolved (mg/L) <br />Cadmium — dissolved (mg /L) <br />Alkalinity, total (as CaCO3) (mg /L) <br />Hardness — (as CaCO3) (mg /L) <br />Carbonate — (as CO3) (mg/L) <br />Bicarbonate — (as HCO3) (mg /L) <br />pH (in pH units) <br />Specific Conductance — (umhos /cm) <br />Chloride — (mg /L) <br />Hydroxide — (as OH -) (mg /L) <br />Sulfate — (as SO4) (mg/L) <br />TDS (total dissolved solids at 180 °C) (mg /L) <br />SAR (sodium absorption ratio) <br />The laboratory's report of the parameters listed above is mailed to Coors Energy Company and <br />is filed at the Keenesburg Mine office. Calendar year summaries of this information, together <br />with compilations of the collected field data, are submitted annually to the Division as part of <br />the Annual Hydrology and Reclamation Report (AHR Report). <br />57 04/11 <br />