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' Geological Technics Inc Pa 4 <br /> $ $e <br /> Ripon Milling Inc <br /> Report-Groundwater Investigation <br /> Project No 253 2 <br /> July 31, 1995 <br /> Groundwater Quality Parameters/Purge Volumes March 13, 1995 <br /> Well Volume Temp Con uc pH *Top of Depth Water Constr- Measu- Wetted <br /> Purged C° ttvity Casing to Level* uction red Casing <br /> (gals) µmhos/ Water total Total Volume <br /> cm (ft) Deppth Deppth (gals) <br /> (ft) (ft) <br /> I MW-1 0 210 1393 7S 6500 2657 3843 ±42 4098 9 2(4"dia) <br /> 9 214 1377 75 <br /> 18 205 1367 75 <br /> 27 205 1368 76 <br /> I Groundwater Quality Parameters/Purge Volumes June 15, 1995 <br /> Well o umeemp on uc pH opo DepthWater onstr- ease- Wetted <br /> Purged Co tivity Casing to Level* uction red Casing <br /> (gals) µmhos/ Water total Total Volume <br /> cm (ft) Deppth Deppth (gals) <br /> (Et) (ft) <br /> MW-1 0 194 1451 75 6500 2601 3899 ±42 3994 8 9 (4"dia) <br /> 95 199 1406 75 <br /> 19 203 1389 75 <br /> 285 202 1379 76 <br /> • evation of monitoring well measurinoint (top of well casing) is relative to a b arbitrary plane <br /> (approximate elevation above mean sea levef-tppSL, USGS topographic map,Salida 7,5 minute quadrangle) <br /> A stainless steel bailer was used to collect each sample Care was taken to minimize <br /> sample agitation from the initial filling of the bailer to the transfer of the sample to <br /> the VOA vial and glass amber liter bottles Once the sample container was filled and <br /> capped, the bottle was inverted, tapped, and checked for head space bubbles The <br /> I sample container was identified and labeled with a unique designation, inserted into <br /> foam holders and placed in an ice chest cooled to 4°C for transport to the laboratory <br /> All sampling equipment was decontaminated using a steam cleaner before and <br /> between uses The effectiveness of the decontamination procedure is ensured by <br /> using the following quality control measures <br /> • Disposable gloves were used by the technician to collect all samples and were <br /> changed with each sampling event <br /> • A bailer blank for each well was collected prior to sampling by filling the <br /> decontaminated stainless steel bailer with water (provided by the laboratory) and <br /> then filling a VOA vial (provided by the laboratory) using the same procedures <br /> for actual sample collection accompanied the samples to the laboratory and serve <br /> as checks against cross contamination <br /> t <br />