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STK3 Stockton Cleanup Journal <br />' 103 North E Street <br /> 08-11-88 Triangle removed one 10K gal gasoline tank, C-12 There was minor contamination <br />' around tank fill LBME applied for permits to continue investigation of contamination <br /> 08-23-88 LBME submitted proposal to San Joaquin Health Dept to overexcavate contamination and <br />' backfill hole left by removal of C-12 <br /> 09-29-88 Contaminated soil around 1 OK gal gasoline tank, C-12 was overexcavated for aeration <br />' 09-30-88 LBME sampled soil in excavated pit where C-12 was removed <br /> 10-05-88 LBME sent lab resul+s to San Joaquin Health Dept for bottom of tank hole where C-12 <br />' was removed All samples were clean <br /> 10-31-88 Baylor's spent 8 hours this month discong soil fOr aeration <br />' 11-30-88 Baylor's spent 4 hours this month discing soil for aeration <br /> 12-31-88 Baylor's spent 3 hours this month discing soil for aeration <br />' 03-24-89 Baylor's spent 2 hours this month d:sting soil Tor aeration <br /> 04-19-89 LBME sampled remediated soil from excavation on 9-29-88 <br />' 05-21-89 Eider Engineering sent lab test results to San Joaquin Health Dept for soil over-e)cavated <br /> on 9-29-88 Soil was remediated and tested clean at 1 4 ppm on 4-19-88 <br />' 02-09-90 Permits requested on 8-11-88 have still not been issued During this 18 month period, <br /> the ground water dropped from 35to 62' Since MW 3, 4, 5 were only 55' they were now <br />' useless Requested parm,ssion to install MW 9, 10 and 11 <br /> 03-20-90 LBME installed three monitoring wells (MW 9, 10, 11) lnstallafion completed on 3-23-90 <br /> MW 9, 10 are 2"wells and MW 11 is a 4"well <br />' 03-30-90 TPH, tolulene and xylene in MW 9, 10, 11 are oelow action level MW 11 showed 1 ppb <br /> of benzene <br />' 04-24-90 LBM; sampled MW 9, 10, 11 MW 11 showed benzene as non-detect <br /> 03-18-91 Elder Engineering sampled MW 9, 10, 11 <br />' 06-10-91 Elder Engineering sampled MW 9, 10, 11 <br />' 10-15-91 Al Mercer and George T akemon met with Steve Schneider and Margaret Lagono from San <br /> Joaquin Pubiic Health Services to discuss letters dated 10-10-90, 9-13-91 and <br /> 9-26-91 <br />' 02-03-92 Elder Engineering sampled barreled purge and deveiopment water from MW 9, 10, 11 <br /> 08-12-92 EMCON installed MW 12, 13 and B92-1 <br />' 08-24-92 EMCON sampled MW 10, 11, 12 and 13 <br /> 10-13-92 EMCON performed a soil vapor extraction test on MW 13 and existing vapor extraction <br /> grid <br />