Laserfiche WebLink
�vt sh <br /> Associatcs, [n,:, " !„-J 07 <br /> .. - . V _-. <br /> Fnvironmental Scientists and Engineers <br /> July 27, 1993 <br /> Mr. Harlin Knoll, REHS <br /> San Joaquin Public Health Services <br /> 445 N. San Joaquin Street <br /> Stockton, CA 95201 <br /> Subject: Tank Removal Work Plan <br /> 1766 Monte Diablo Avenue <br /> Stockton, California <br /> Dear Mr. Knoll: <br /> Walsh & Associates, Inc. (W & A) is pleased to present this work plan for the removal of five <br /> underground storage tanks, soil sampling and laboratory analyses, and options for the disposition <br /> of soil overburden generated by the excavation work. Excavation work and tank removal will <br /> be performed by Jim Thorpe Oil of Stockton, California. The tanks will be unearthed on Monday <br /> the 2nd day of August, followed by actual removal from the ground on August 4, 1993 at <br /> approximately 9:30 a.m. A registered geologist from our office will be present to assist with the <br /> tank pull and to collect soil samples from beneath the tanks. <br /> W & A proposes to collect two soil samples from beneath each of two 8,000-gal gasoline tanks <br /> and two 4,000-gal gasoline tanks, and one sample from beneath a 550-gal waste oil tank for a <br /> total of n;r,e coil samples. Samples collected from beneath the gasoline tanks will bP ana._lyred <br /> for Total Petroleum Hydrocarbons as gasoline (TPHg) and for the associated volatile constituents <br /> benzene, toluene, ethylbenzene, and total xylene isomers (13TEX). The laboratory analyses will <br /> be performed using EPA Methods 8015 (modified)/5030 and EPA Method 8020, respectively. <br /> The sample collected from beneath the waste oil tank will be analyzed for Total Oil and Grease <br /> (TOG) using Standard Method 5520. The analyses will be performed by Matrix Environmental <br /> Laboratories of Rancho Cordova, California. Matrix is certified by the State of California for <br /> these analyses. All samples will be collected in situ, sealed, placed in iced storage, and <br /> transported directly to the environmental laboratory. <br /> W & A recommends that the tank excavations be backfilled as soon as possible following the <br /> tank removal operations. Execution of this recommendation will reduce the liability of personal <br /> injury and remove the potential health threat concerning the release of volatile hydrocarbons to <br /> West Coast Division: <br /> 1734 34th Street . Suite B . Sacramento, California . 95816 . Phone (916) 737-7240 . FAX (916) 737-7245 <br /> Corporate Office: <br /> 4888 Purl East Circle . Suite 108 . Boulder, Colorado . 80301-2475 . Phone (303) 443-3282 . FAX (303) 443-0367 <br />