Laserfiche WebLink
PUBLIC riEALTH SERVICES a�,N <br /> .a <br /> SAN JOAQUIN COUNTY <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 95(Cco,� <br /> ' cic'iaRr'`P <br /> 209/468-3420 v <br /> WILL UCLUSIN �,� i �� <br /> UNITED STATES OF AMERICA t J1 <br /> GENERAL SERVICES ADMINISTRATION <br /> 525 MARKET ST 31 ST FL 9PMC <br /> SAN FRANCISCO CA 94105-2799 <br /> Re: Federal Building Site Code: 505260 <br /> 401 North San Joaquin Street <br /> ��'Stockton*CA 95202 3 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> reviewed the "Soil and Groundwater Investigation" report prepared by CAPE Environmental <br /> Management dated November 1995. PHS/EHD has the following comments for your <br /> consideration. <br /> Please note that pursuant to the Business and Professions Code: Chapter 12.5 Geologists <br /> and Geophysicists, all geological reports or documents shall be prepared by a registered <br /> geologist or subordinate employee and signed or sealed. Neither the report nor the <br /> included boring logs were signed or stamped with the seal of a registered geologist. An <br /> amended report or addendum should be submitted, if indeed the report was prepared under <br /> the supervision of a registered geologist. <br /> The report included the results of the soil and groundwater investigation that was <br /> undertaken to determine the extent of soil and/or groundwater contamination remaining <br /> after the 1995 over-excavation. Five soil borings were drilled and sampled, one of which <br /> was subsequently converted into monitoring well, MW 1 . Ten soil samples were submitted <br /> from the borings for chemical analysis. Two monitoring events occurred on August 10, <br /> 1996 and October 8, 1996, during which depth to water measurements and groundwater <br /> samples were collected. <br /> Groundwater contaminants were not detected in the groundwater samples collected and <br /> the depth to water ranged from 31.05 feet (July 1996) to 30.09 feet (October 1996) <br /> below ground surface (bgs). <br /> The report failed to include the portion of the laboratory report with TPH-diesel analysis of <br /> the groundwater sample collected on October 8, 1996. Please submit this information. <br /> The report included soil sample results from soil boring B4 at 15 feet which indicated that <br /> the sample was diluted by a factor of 500. Please note that PHS/EHD has contacted <br /> Curtis & Tompkins, and the laboratory report erroneously noted that the detection limit was <br /> 250 ppb, when actually the detection limit was 2,500 ppb. A laboratory report revision <br /> will be prepared and should be forwarded to CAPE Environmental. <br /> A Division of San Joaquin County Health Care Services <br />