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J . H . REINFELDER & ASSCOIATES <br /> GEOTECHNICAL CONSULTANTS . MATERIALS TESTING <br /> ENVIRONMENTAL RESOURCES <br /> 9795 BUSINESS PARK DRIVE,SUITE D <br /> SACRAMENTO.CA 95827-1794 - <br /> 19161 366-1701 <br /> April 30, 1987 <br /> File: 24-Y72040 <br /> Industrial Asphalt <br /> P.Q.' Box 2263 <br /> Irwindale, California 91706 <br /> Attn: Mr. Dwight Beavers <br /> Dear Mr. Beavers: <br /> In response to your letter to Don Rothenbaum of April 17, 1987 concerning <br /> an underground tank in the Lindon area, J.H. Kleinfelder & Associates is <br /> pleased to present a soil testing plan for your submittal to the San <br /> Joaquin Local Health District. <br /> The following is a description of services to be implemented by <br /> Kleinfelder to complete Industrial Asphalt's underground tank closure at <br /> the Lindon site. Two soil samples, one at either end of the tank <br /> location, will be collected at a depth of 5 to 6 feet from ground surface, <br /> 1 to 2 feet below the bottom of the tank into native soil. <br /> Two options of sample collection are presented herein: <br /> r <br /> OPTION A <br /> Industrial Asphalt will provide a backhoe service to excavate to a depth .! <br /> of not more than 5 feet at either end of the tank location. A Kleinfelder <br /> geologist will then collect one soil sample in a brass tube at both "r <br /> excavations provided the excavation is not deeper than 5 feet in <br /> accordance with OSHA regulations. In the event the excavation is deeper f <br /> than 5 feet, the backhoe will reach the sample and bring it to the surface <br /> for our sampling activity. The tubed samples will then be properly field <br /> checked and.preserved for laboratory analysis as described .in Option B. <br /> OPTION B <br /> The samples will be collected by drilling a 6-inch hollow stem auger to 12 <br /> inches above the sampling depth and hammering 18 inches a decontaminated <br /> modified porter sampler inner-sleeved with three 6-inch brass tubes. The <br /> bottom and middle tube will be covered iii aluminum-foil, capped with <br /> plastic caps, and placed in an iced cooler. An organic vapor analyzer <br /> will be used to qualitatively screen soil from the top tube for the <br /> presence of petroleum hydrocarbons. The two borings will be backfilled , <br /> with neat cement. <br /> OTHER OFIICLS Walnut Creek . Sunnvvale . San Ramon . Reno • S1or'klon . Fresno . farrlreld LS1�L! <br /> Rohnert Park . Merced . Los AnF,eles • Las Vegas . $I George. Ulah <br />