Laserfiche WebLink
+ w <br /> y <br /> r4 <br /> PUBLIC HEALTH SERVICES paWN <br /> SAN JOAQUIN COUNTY <br /> r� <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388 cgiroaa`P <br /> 2091468-3420 <br /> (0 EIP <br /> DAVID ATWATER <br /> VAN DE POL ENTERPRISES NOV 0 5 1996 <br /> P O BOX 1107 <br /> STOCKTON CA 95201 <br /> Re: California Fuels Station Site Code: 1214 <br /> 2402 Pacific Avenue <br /> Stockton CA 95204 <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has completed review of the "Work Plan Addendum" dated October 16, <br /> 1996 and prepared by Advanced Geo Environmental. PHS/EHD has the following <br /> comments for your consideration. <br /> The work plan proposed five soil borings to depths of 50 feet. Soil samples will be <br /> collected at five foot intervals beginning at 15 feet below ground surface and a <br /> groundwater grab sample will be collected from each boring. Selected soil samples <br /> will undergo TPH-gas, TPH-diesel, MTBE, and BTEX analysis, as well as <br /> permeability, porosity, soil moisture, percent organic content for site specific <br /> environmental fate evaluations. <br /> The soil and groundwater samples should be stored on ice and maintained at 4° C <br /> until laboratory analysis. Also, the boreholes must be grouted through tremmie pipe, <br /> from the bottom of the borehole to ground surface. <br /> The location of the proposed soil borings were predominantly in the areas initially <br /> determined to be downgradient of the former tank pit. Prior to initiating the proposed <br /> field work, PHS/EHD requests that you obtain groundwater depths and determine the <br /> gradient direction. <br /> The work plan indicated that a van-mounted geoprobe unit would be used to collect <br /> the soil and groundwater samples. This type of sampling equipment typically is most <br /> cost effective for shallower borings. PHS/EHD suggests that you obtain pre-approval <br /> from the State Water Resources Control Board Clean-up Fund Unit to ensure that the <br /> costs will be reimbursable. <br /> A Division of San Joaquin County Health Care Sen-ius <br />