Laserfiche WebLink
• • cop <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon, California 95320 <br /> Telephone: (209)838-9888 MAY 2 © 2005 <br /> Facsimile: (209)838-9883 ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> May 19,2005 <br /> Ms. Wendy Cohen <br /> CA Regional Water Quality Control Board, <br /> Central Valley Region <br /> 11020 Sun Center Drive,#200 <br /> Rancho Cordova, CA 95670-4645 <br /> Subject: Results of Subsurface Investigation <br /> Former Tiger Lines Truck Yard <br /> 1430 Cherokee Lane, Lodi, CA <br /> Dear Ms. Cohen: <br /> On April 4 and 5, 2005 Ground Zero Analysis, Inc. (Ground Zero) performed a subsurface <br /> investigation at the subject site. The purpose of the investigation was to determine if past use of <br /> the property as a truck yard had impacted soil and/or groundwater beneath the site. Figure 1 <br /> shows the location of the site. <br /> BACKGROUND <br /> The Tiger Lines facility previously operated as a full-scale trucking yard. The site previously <br /> housed four 20,000-gallon aboveground diesel storage tanks (ASTs) and four 10,000-gallon <br /> gasoline ASTs for truck fueling. The ASTs were located in a secondary containment structure. <br /> The previous location of the secondary containment structure is shown on Figure 2. <br /> In 2003, the ASTs and the secondary containment structure were removed, exposing the soil <br /> beneath. Olfactory indications of a possible leak of diesel fuel prompted a preliminary soil <br /> investigation. On September 22, 2003, an exploratory trench was opened within the confines of <br /> the former secondary containment structure. The trench was advanced to 20 feet below the <br /> ground surface (bgs). Hydrocarbon odors described as diesel-like were observed to total depth. <br /> Soil samples were collected at 5 feet bgs, 10 feet bgs, 15 feet bgs, and 20 feet bgs. The samples <br /> were delivered under chain of custody protocol to State-certified Argon Laboratory (ELAP No. <br /> 2359) for analysis. The suite of analyses included total petroleum hydrocarbons as gasoline <br /> (TPHg) and diesel (TPHd) by EPA Method 801513; benzene, toluene, ethylbenzene and xylenes <br /> G:\GROUNDZBTIGER\REPORTS\Rcv'dSBmpon.doc <br />