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3 lE , Ape rid •x X I V-10 <br />WESTERN SLOPE CARBON. INC. <br />• <br />MINE OFFICE-SOMERSET, GOIORHDO 914 Ja <br />303929-SB] S <br />May 11, 1981 <br />T0: Catherine Chachas <br />FROM: Von McAllister <br />SUBJECT: 4later Sampling Program <br />~~~- S <br />Our water quality monitoring program includes two types of samples: <br />discharge samples and quarterly samples. <br />Discharge samples are taken as grab samples from the discharge pipe <br />of the sediment ponds. These sediment pond locations are marked on <br />the attached map, and are as follows: <br />SP 1 Norris Pond <br />SP 2 West Mine Pend (not yet constructed) <br />• SP 3 Substation Pond <br />SP 4 East Mine Warehouse Pond <br />SP 5 Intake Shaft Pond (not yet constructed) <br />At least one sample is taken for every seven days that we discharge. <br />We normally take one sample each day that we discharge. Samples are <br />taken by Oscar Beck or myself. In the past we have been analysing <br />these samples for TSS, TDS, total iron, and pH. We will begin analysing <br />them for antimony, arsenic, beryllium, cadmium, chromium, copper, lead, <br />mercury, nickel, selenium, silver, thallium, zinc, cyanide and phenols. <br />Results are sent quarterly on an NPDES reporting form to the Colorado <br />Department of Health and to the Environmental Protection Agency. <br />Quarterly samples are taken once every three months, as close to the <br />beginning of the quarter as possible. These are taken at four different <br />kinds of points: river, streams, drill holes, and Crystal Meadows <br />monitoring wells. These locations are also marked on the attached map, <br />and are explained as follows: <br />®~v~~~~p <br />rtrav i ~ i~s~ <br />WESTERN SLOPE CARBON, lNC. <br />A S V B S I O I A R V O F N O R T H W E S T E N E R G Y C O M- A N Y <br />