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h <br /> A.Teichert& Son Mobile Equip Shop 103 N. 'E' St. Stockton, CA. <br />. SVE Pilot Test Work Plan Feb 1994 <br /> 1 1.0 Introduction <br /> This work plan describes the planned procedures, methods and equipment utilized for <br /> a soil vapor pilot test at the A. Teichert & Son facility located at 101 North 'E' Street, <br /> Stockton, California. This work plan was requested by Ramos Environmental <br /> I Engineering (Ramos), located in West Sacramento, California on behalf of Teichert. <br /> The pilot test is utilized to collect information on subsurface materials and their <br /> response to vacuum introduced at the ground surface through a screened monitoring <br /> well transecting hydrocarbon impacted soils. <br /> 0 Subsequent to authorization from San Joaquin County Department of Environmental <br /> Health (the County), BCR proposes to implement the following scope of work. The <br /> work described below will be completed in accordance with County regulations and <br /> the BCR Standard Procedures included in Appendix A. <br /> I/ o Secure necessary permits from the County <br /> o Advance, sample, develop and construct one 4-inch diameter vapor <br /> extraction/groundwater monitoring well. The well is projected to extend a <br /> minimum of 15 feet beneath the static water table, currently approximately 71 <br /> • feet below ground surface. The screened interval will be finalized based on <br /> samples collected during well collection, but is expected to extend from <br /> approximately 45 feet bgs to total depth. <br /> a Complete a soil vapor pilot test including the measurements of air flow, <br /> vacuum, and hydrocarbon constituents. Collect two air samples for analysis of <br /> f total petroleum hydrocarbons (TPH) as gasoline and benzene, toluene, ethyl <br /> benzene, and xylene isomers (BTEX) by a state-certified analytical laboratory. <br /> o Calculate air flow, radius of influence, and quantities and mass of air and <br /> petroleum hydrocarbons per 24-hour time period. Collect, resolve and report <br /># sufficient information to design and permit the construction and operation of a <br /> soil vapor extraction system in accordance with applicable regulations. <br /> o Submit a results report documenting the findings of the pilot test and a <br /> Remedial Action Plan containing design elements of the soil vapor extraction <br /> system. <br /> 2.0 Background Information and Previous Work <br /> Previous work at the site completed by other parties since 1986 has removed <br /> 00 gasoline, diesel, and waste oil underground storage tanks. Samples from the UST <br /> 1 <br />