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Q_ <br /> PUBLIC HEALTH SE Kiv ICES <br /> SAN JOAQUIN COUNTY <br /> JUG[KHANNA M.D..M.P.H. ! <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • 5tocimn, California 95201 <br /> (209) 468-3400 f <br /> DAVID CHAVIER � <br /> BANK OF STOCKTON <br /> P O BOX 1110 <br /> STOCKTON CA 95201 AUG 2 7 1992 <br /> Re: Babka/San Joaquin Beverage Company SITE CODE: 2000 <br /> ` 1149 West Weber <br /> r3 I <br /> Stockton CA 95201 I <br /> San Joaquin County Public Health Services,Environmental Health Division (PHS/EHD) has <br /> completed review of the "Preliminary Investigation and Evaluation Report" dated July 17, <br /> 1992 and prepared by Geological Audit. PHS/EHD has;the following comments for your <br /> consideration. <br /> The re-excavation of hydrocarbon contamination produced ap.proximateiy 800 cubic yards <br /> of contaminated soil which was disposed of either at Forward, Inc in Manteca, CA or at <br /> Brown-Ferris Industries, Vasco Road Sanitary Landfill in Livermore, CA. Soil samples taken <br /> from the excavation indicated that the contamination had beim removed. However, the <br /> water sample taken from the excavation pit indicated groundwater contamination. <br /> PHS/EHD was informed that groundwater which had seeped into the excavation had been ` <br /> vacuum pumped several times while the excavation was,open! The excavation was open <br /> from January 16, 1992, when re-excavation was initiaterd, until April 28, 1992, when the <br /> excavation was backfilled with pea gravel. Please submit'irecords, within the next quarterly <br /> report, of the disposal of groundwater which was removed by vacuum .pump. <br /> The report included lab reports documenting analytical results,. The following reports did . <br /> not include Quality Assurance/Quality Control Data Sheets: <br /> WEST laboratory, dated February 12, 1992; <br /> Alpha Analytical laboratory, dated June 1, 1992; <br /> Alpha Analytical laboratory, dated June 18, 1992;! and <br /> Alpha Analytical laboratory, dated July 9, 1992. ! j <br /> Please submit this information to verify that the reported results are accurate.. <br /> i� <br /> The report did not include purge records. PHS/EHD utilizes these records to show that <br /> groundwater was stabilized prior to groundwater sampling. Purge records also indicate the <br /> time at which groundwater elevation measurements are obtained. Due to the proximity of <br /> the site to the Stockton Deep Water Channel, groundwater elevation measurements in all <br /> monitoring wells should be made within one hour, to provide reliable data for the <br /> determination of groundwater gradient. Please include purge records along with tide tables <br /> for the date of sampling within quarterly reports. <br /> �4 I� <br /> fy i <br /> A Division of San joaquin County Heafth(:are SwALes <br /> L( J <br />