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BROWN arm CALDWELL Well No MW-4 <br /> GROUNDWATER SAMPLE COLLECTION RECORD _ <br /> Project Name Q- Serve Manteca Job No 3cv3-a Date C� <br /> 400catlon Station No 100878, 1012 West Yosemite Ave , Manteca, CA <br /> Samplers Name M'--'T-1✓E��A <br /> Weather Conditions <br /> 1 WATER LEVEL DATA. (from TOC) TOC Elevation (from LS) <br /> a Depth to water(ft) l q �4+ Water Table Elev <br /> b Total Well Depth = 28 64 ft Tape Corr (TC) <br /> c. Length of Water Column = 9 o7' (b - a) Well Diameter 45x 10' <br /> d Casing Volume - 8q (c x [gaVft casingp 2-in casing =016 gaVft <br /> • 4-in casing =0 65 gaVft <br /> e Length of finer pack - 9' 0--�+ oscp 6-in casing - 1 47 gal/ft <br /> f Fitter pack volume (e x [galfft filter pack]) 6 5-in casing = 1 70 gaVft <br /> 8-in casing =2 60 gaVft <br /> g TOTAL WELL VOLUME __ ZO 04G _(d + f) 10-in casing =410 gaVft , <br /> 12-in casing =5 00 gaVft <br /> 2 WELL PURGING DATA. 8-in hole filter pack =0 78gaVft ' <br /> • 10-in hole filter pack= 1 21gaVlt ' <br /> a Purge Method �t2 PJr'� W L-rA i ESR. 12-in hc[e finer ck= 147 ' <br /> b Required Purge Volume(® zn 0'+ gallons per well volume) GAL <br /> c Heid Testing, Equipment Used <br /> d.Pump Rate 6?Fri <br /> e Method of GW Disposal 55 aallon drum <br /> f Recovery Rate Slow (90%> 60min), Medium (90%30-60 min) Fast 9 < 10 min) <br /> Volume pump <br /> Removed Spec Turbidity Color/ <br /> Time rc pH Conductivity (N1U's) Description SWL Placement <br /> (gal) =777 757W77, Z4+ <br /> zD 0531 ZO.q -7 <br /> I <br /> I i <br /> , i I <br /> 3 SAMPLE'COLLECTION Method Disposable Bailer _Container 3 x 40 ml VOA Preservation HCL <br /> I t ; I Analysis i TPH s 8015, BTEX 8020 <br /> COMMENTS, REMARKS <br /> A <br />