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<br />B. Water Quality <br />-2- <br />The water quality section of the Report was presented in a very usable <br />format. There are, however, some discrepancies which need to be <br />resolved. <br />Page 24, Section 2. <br />References are made to wells GW-S42P1, GW-S44P2, and GW-544. Serious <br />typographical errors exist which are corrected here: For well <br />GW-S42P1; (in text) read GW-S44P2; for well GW-S44P2 (in text) read <br />GW-S42P1; for well GW-544 (in text) read GW-542. <br />Well GW-S42P1 has a relatively high TDS value of 1895 mg/1 which may be <br />due to drilling fluid contamination from an adjacent well (GW-S42). <br />Before dropping either of these wells from the sampling program, a <br />pump-surge-pump well development method should be attempted. <br />Page 26, Section 6. <br />Water from well GW-S5 (Trout Creek Sandstone completion) is described <br />as sodium bicarbonate type. Preliminary calculations indicate that the <br />water is a sodium sulfate type. Seneca II personnel should be asked to <br />provide information describing their water typing procedures. <br />Finally, the text states that an attempt will be made in 1985 to <br />standardize sampling procedures in wells GW-S8 and GW-S8P1. If present <br />procedures are not adequate, an explanation is in order. Seneca II <br />staff should explain what these new procedures are, how they differ <br />from present, and how they will affect sample integrity. <br />C. Surface -Water System <br />The surface water portion of the text needs to address some points to <br />clarify the interpretation of data. <br />The method(s) of obtaining instantaneous discharge measurements at each <br />surface water site should be explained. The method used to derive the <br />rating curve for SW-S2-6 should be explained. Specifically, all the <br />Seneca discharge measurements were ignored, and the curve was based on <br />calculated discharge values. The calculated discharge values are as <br />much as 2.5 times higher than measured values at the same gage (stage) <br />height. <br />The variables used to derive rating curves for SW-S2-1, SW-S2-2, (upper <br />portion), and SW-S2-5 need to be discussed. <br />D. ualit <br />At surface water site SW-S2-6, increases in sulfate, hardness and <br />sodium were measured. If these increases are due to discharge from 004 <br />pond, was there a measurable increase in these constituents noted there? <br />