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BROWN Arm CALDWELL Well No MW-4 <br /> GROUNDWATER SAMPLE COLLECTION RECORD <br /> Project Name EZ- Serve, Stockton Job No . 1567-04 Date (p Z 1 S S <br /> Location Station No 100966, 2537 Waterloo Rd 0 Auto Ave , Stockton, CA <br /> Samplers Name1 <br /> Weather Conditions <br /> 1 WATER LEVEL DATA. (from TOC) TOC Elevation (from LS) <br /> a Depth to water(ft) = &1) -1 f ' Water Table Elev <br /> b Total Well Depth = 90.13 ft Tape Corr (TC) <br /> c Length of Water Column = (b —a) Well Diameter 4"x 10' <br /> d Casing Volume = 17', U (c x [gaVtt casing]) 2-in casing =0 16 gal/ft <br /> • 4-in casing =0 65 gaVft <br /> e Length of#€iter pack = Ic ' >; 6-in casing = 1 47 gal/ft <br /> f Filter pack volume = f r _ (e x [gaVft filter pack]) 6 5-in casing = 170 gaVft <br /> g TOTAL WELL VOLUME = l.c! ,��. (d + f) 8-in casing =2.60 gaVft <br /> 10-in casing =410 gaVft <br /> 12-in casing =5 00 gaVft <br /> 2 WELL PURGING DATA 8-in hole filter pack =0 78gal/ft <br /> a. Purge Method cQ" LG Et 5 u,g lam"��io <br /> •110-in hole filter pack= 1 21gaVft <br /> 12-in hale fitter ack= 1 47gaVft <br /> b. Required Purge Volume{tilt 3(, k _gallons per well volume) = 7�-.n� ,— <br /> c Feld Testing, Equipment Used �S l <br /> d Pump Rate <br /> e. Method of GW Disposal 55 gallon drum <br /> f Recovery Rate Slow (90% > 60mrn), Medium (90%30-60 min CF`a 90%< 10 min) <br /> Volume <br /> Removed Spec Turbidity Color/ Pump <br /> (gal) Time T°c pH Conductivity (NTU's) Description SWL Placement <br /> 44) o� <br /> 31/ 410 <br /> 1E <br /> 3 SAMPLE COLLECTION: Method Disposable Bailer Container 3 x 40 ml VOA Preservation HCL <br /> Analysis TPH s 8015, BTEX 8020 <br /> COMMENTS, REMARKS <br />