Laserfiche WebLink
PUBLIC HE LTH SERVICA <br /> o U I N c0 <br /> SAN JOAQUIN COUNTY Q , <br /> ENVIRONMENTAL HEALTH DIVISION U) ` <br /> Karen Furst M.D M P.H, Health Officer <br /> 304 East Weber Avenue, Third Floor a Stockton, CA 95202 QL'�o 10% <br /> 209/468-3420 <br /> Jeff Hopkins <br /> Western Oil & Spreading Inc AUG Q 41999 <br /> PO Bax 709 <br /> Martinez, CA 94553 <br /> ' Re Western Oil and Spreading Site Code 1927 <br /> 19256 N Hwy 99 <br /> Acampo, CA 95220 <br /> A preliminary soil and groundwater investigation of the contamination of the former underground <br /> storage tank (UST) at the above-referenced sit was conducted on March 23 and March 24, 1999 San <br /> Joaquin County Public Health Services(PHS/EHD) has reviewed Report for a Limited Soil and <br /> Groundwater Investigation dated May 24, 1999 prepared by Gallardo&Associates PHS/EHD has the <br /> following comments <br /> 1 Analytical results of the groundwater encountered in soil boring#1 (B-1) advanced in the area of the <br /> two former 20,000 gallon UST were 5,900 parts per billion (ppb) of Total Petroleum Hydrocarbons <br /> as diesel (TPH-d), 4,300 ppb of TPH as kerosene (TPH-k), and 71 ppb of TPH as gasoline (TPH-g) <br /> It is unknown if this is perched water Historically groundwater in the area was approximately 50 <br /> to 60 feet bsg in Fall 1993 according to maps published by San Joaquin County Flood Control, and <br /> approximately 30 to 40 feet bsg in Spring 1986 The two 20,000 gallon UST were removed on <br /> October 22, 1987 PHS/EHD recommends installing groundwater monitoring wells to investigate <br /> ' the extent of the groundwater contamination <br /> 2 Analytical results of the soil sample collected from B-1 at 40 feet bsg were 730 parts per million <br /> (ppm) of TPH-d, 530 ppm of TPH-k, and 17 ppm of TPH-g Analytical results of the soil sample <br /> collected from B-2 at 30 feet bsg were 13,000 ppm of TPH d, 11,000 ppm of TPH-k, and 230 ppm <br /> of TPH-g The vertical extent and horizontal (toward the east)extent of the contamination in the <br /> soil have not been defined <br /> 3 Submit to PHS/EHD a work plan that will define the vertical and horizontal extent of the <br /> hydrocarbon contamination in soil and groundwater by October 5, 1999 <br /> 4 PHS/EHD recommends applying to California's Petroleum Underground Storage Tank Cleanup <br /> Fund for reimbursement of corrective action cost, if you have not already done this <br /> If you have any questions, please contact Jeffrey Wong at (209) 468-0335 <br /> Donna Heran,REHS,Director <br /> Environmental Health Divisiop <br /> Jeffrey Wong, EHS, Trainee Margaret Lagorio,RHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> c RWQCB, Central Valley Region -Mark List <br /> c Gallardo&Associates -Rafael Gallardo <br /> A Division of San Joaquin County Health Care Services <br /> WON <br />