Laserfiche WebLink
PUBLI HEALTH SERVICES <br /> SAN JOAQUIN COUNTY K � <br /> JOGI KHANNA <br /> He'alrh Officer <br /> Ct' P <br /> P.O. Box 2009 • (1601 Ease Hazelton Avenue) •Stockton. California 95201 ��ix66* A <br /> (209) 468.3400 <br /> DAVID CHAVIER <br /> BANK OF STOCKTON D <br /> P0BOX 1110 �J <br /> STOCKTON CA 95201 <br /> JAN 2 199 <br /> RE: Babka/San Joaquin Beverage Company REFER TO SITE CODE: 2000 <br /> 1149 West Weber <br /> Stockton, CA 95201 <br /> APN# 145-190-02 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has completed <br /> review of the Geological Audit Services, 'Site Contamination Workplan', dated December 9, 1991. <br /> PHS/EHD comments follow. <br /> PHS/EHD agrees that re-excavation is an effective method to remove contaminated soil eliminating a <br /> potential source of contamination to groundwater. Due to the depth to groundwater in the vicinity of the <br /> site, a groundwater investigation is required. A minimum of three monitoring wells are necessary to <br /> determine the groundwater gradient and to define the extent of groundwater contamination. <br /> 1. The Tri-Regional Recommendations,August 10, 1990, suggests that a minimum of one monitoring <br /> well be installed in a verified downgradient direction within 10 feet of the former tank location. <br /> Please revise the proposed wells location to include a downgradient monitoring well within 10 feet <br /> of the former tank location. <br /> 2. The Workplan indicated that all samples,soil and water,would undergo BTEX,TPH-g,TPH-d <br /> and organic lead analysis. Due to the instability of organic lead, PHS/EHD prefers total <br /> lead/soluble lead analysis. Previous lead levels, 92 ppb TWG/E-15 April 1991, exceeded the State <br /> of California Drinking Water Maximum Contaminate Level, 50 ppb. <br /> 3. The Workplan did not estimate the amount of soil which would be excavated. Adequate sampling <br /> is necessaryto characterize the effectiveness of the re-excavation. Residual contamination, <br /> remaining at the conclusion of the re-excavation attempt,will require additional remediation. <br /> A Divi4knn of San Joaquin County Health Care icrvnces �� <br />