Laserfiche WebLink
Dove FWa <br />• <br />The water quality analyses for both surface and ground water were consistent with the analyses <br />from the first and second quarters, generally indicating background conditions. No elevated <br />concentrations of contaminants were detected at concentrations above the EPA practical <br />quantitation limit (PQL). <br />Inorganic analyses, including metals, revealed no constituents at levels that would be considered <br />above background. Major ions and other parameters are at concentrations that could be <br />considered normal. The total suspended solids concentrations in two of the groundwater <br />monitoring wells are lower in the third quarter compared to the first two quarters. This can be <br />attributed to the continued development of the wells prior to sampling. <br />Major ion balance calculations were made to determine the completeness of the groundwater <br />analyses. Results of the ion balance calculations are presented in Table 3. Groundwater samples <br />are electrically neutral, so the total charges on cations and anions reported in the analyses should <br />be equal. The total positive and negative charges are obtained by summing the equivalent <br />concentrations of cations and anions. The ion balance error is normally expressed by the <br />difference as a percentage oC the sum and should be less than about 7.5 percent error (Lloyd and <br />Heathcote ]985).1 Ion balance for the third quarter analyses at Dowe Flats are within the <br />acceptable error range. <br />• The following is a brief discussion of the analytical results for the samples collected Crom each <br />monitoring location. The units of ug/L are equivalent to parts per billion (ppb); mg/L are <br />equivalent to parts per million (ppm). <br />5.1 Monitorine Well DFMW-1 <br />No volatile organic compounds were detected in the ground water sample from [his well. The <br />inorganic analyses are consistent with the results from the first and second quarter sampling <br />events. The turbidity and total suspended solids have decreased which indicates that continued <br />purging continues to reduce the amount of fine material being drawn through the well screen <br />and sand pack. <br />t Lloyd, J.W., and Heathcote, J.A., 1985, Natural inorganic hydrochemistry in <br />relation to groundwater an introduction: Clarendon Press, Oxford, 296 pp. <br />Pmjetl Number. 219-9)-412 <br />• Jau.ry 21, 1991 <br />PweS <br />