Laserfiche WebLink
f <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street ,' <br /> Escalon, California 95320 <br /> Telephone: (209) 838-9888 <br /> Facsimile: (209) 838-9883, ENVIRONMENTAL HEALTH DIVISION 1! <br /> 304 E. Weber Ave.Third Floor ,, <br /> P. O. Box 388, Stockton CA 95201-0388 11 <br /> Approved <br /> ❑ <br /> June 29, 1999 � Denied -;eir <br /> Condon <br /> i s �v <br /> ami` <br /> Mr. Harlin Harlin Knoll <br /> Dat bygkmp£P <br /> San Joaquin County Public Health Services ii <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202;, <br /> Subject: Workplan for Subsurface Investigation <br /> Sunnyside Produce <br /> 8960 W. Walnut Grove Road, Thornton, CA <br /> Dear Mr. Knoll: 11 <br /> This letter report is submitted by Ground Zero Analysis, Inc. (Ground Zero) on behalf of Sunnyside <br /> Produce to present a proposed workplan to conduct a subsurface investigation at the subject site <br /> (Figure 1). <br /> The general scope of work will consist of drilling and sampling nine soil borings in the vicinity of the <br /> ate the extent of subsurface soil and <br /> to investigate former underground storage tanks (UST) g <br /> groundwater contamination. Five of the proposed borings .will be advanced using the direct push <br /> method. The rema ning four borings will be advanced(through the use of a hand auger. One discrete <br /> groundwater sample will be collected from each of the five proposed direct push borings 1'to <br /> -tent of groundwater impact. Following completion of the work, Ground <br /> determine the lateral e <br /> Zero will submit a techmucal report that summarizes the methods and results of the investigation. <br /> BACKGROUND <br /> ii <br /> site is currentl 'o eratin as convenience store. A limited subsurface assessment was performed <br /> The s y,� p g <br /> by Ground Zero on December 3 and December 4, 1996. Analysis of the samples collected during the <br /> assessment indicated that soil and groundwater in the vicinity of the USTs were impacted by <br /> petroleum hydrocarbons. Soil and groundwater ,analytical results from the December 1996 <br /> subsurface investigation are summarized in Table 1. Sample locations are shown on Figure 2. <br /> ervices OES subsequently removed one 10,000-gallon diesel and two 10,060- <br /> Oil Equipment S ( ) <br /> gallon gasoline USTs along with associated plumbing on January 21, 1999 under permit Afrnom cal <br /> Joaquin County Public Health Services, Environmental Health Division (PHS/EHD)• Yi <br /> data/groundze/manser/wpO599.doc <br /> �I <br /> Y <br />