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BROWN Aism CALDWELL Well No. MW-7 <br /> GROUNDWATER SAMPLE COLLECTION RECORD <br /> Project Name EZ- Serve Manteca Job No. 1565-04 Date (e <br /> Location Station No 100878, 1012 West Yosemite Ave, Manteca,CA <br /> Samplers Name. <br /> Weather Conditlons ' G <br /> 1 WATER LEVEL DATA (from TOC) , TOC Elevation (from LS) <br /> a Depth to water(ft) = Water Table Elev. <br /> b.Total Well Depth = 29 07 ft. Tape Corr (TC) <br /> c. Length of Water Column = tZ f (b —a) Well Diameter 20x 8" <br /> d. Casing Volume �•5 9,`c (c x [gaVft casing]) 0 2-in casing =0.16 gaVft <br /> «-I r 4-in casing =0 65 gaVft <br /> e Length of filter pack = to 6-En casing =1 47 gaVlt <br /> f Fitter pack volume (e x [gaVtt filter pack]) 6 5-in casing = 1.70 gaVft <br /> Ban casing =2.60 gallft <br /> g TOTAL WELL VOLUME _ )It, (d + f) 10-In casing =410 gaVft <br /> 12-in casing =5 00 gaVft <br /> 2. WELL PURGING DATA i• 8-m hole fitter pack =0 78gal f <br /> _ 10-in hole fitter pack= 121 gaVf <br /> a. Purge Method �% �'^uar ��'� 12-in hole filter pack= 1 47 aVF <br /> b Required Purge Volume(0 Uo_r�) gallons per well volume)= <br /> c. Field Testing, Equipment Used S <br /> d Pump Rate I,t '� <br /> e Method of GW Disposai _ 55 gallon drum <br /> f. Recovery Rate Slow(90%>60min), Medium (90%30-60 min) Fast(90%< 10 min) <br /> Volume <br /> Removed Spec Tu�id�ty Color/ Pump <br /> (gal) Time T°c pH Conductivity (NTU's) Description SWL placement <br /> - ? lot -3 "0- 4,:111 '03 CLvvo� Sir l,�tl <br /> ' <br /> 3 SAMPLE COLLECTION Method Di ' le Bailer Container .3 x 40 mI,VOA Preservation ,HCL <br /> Analysis TPH (gas)8015; BTEX 8020 <br /> l <br /> € <br /> COMMENTS, REMARKS <br /> 1i I!' SII' I <br /> Ull J'JJTI ' 11 111 <br /> r <br />