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U1. <br />Site Safety Work Plan <br />Perimeter Established: <br />Map/Sketch attached: X (Figure 1) <br />Perimeter identified: X (Figure 2) <br />Site Personnel: Level of Protection A: <br />B: <br />C: <br />D: <br />UST REMOVAL SOIL SAMPLE14G ACTIVITIES: <br />All USTs located on site is to be properly decommissioned and removed by B & C <br />Construction following American Petroleum Institute (API) Recommended Practice 1604 <br />guidelines. Prior to removal, the contents of the USTs will be properly withdrawn <br />(pumped) and transported for recycling. The top of the USTs will then be excavated, tank <br />fixtures removed, and triple rinsed. Rinsate will be drummed and properly disposed. <br />Continual monitoring for flammable/combustible vapor concentrations will be conducted <br />during the tank removal process to ensure that levels do not exceed 10 percent of the <br />lower explosive limit. The USTs will then be inerted by adding 1.5 pounds per 100 <br />gallons of tank capacity of solid carbon dioxide (dry ice) and an 1/8 -inch vent hole cap will <br />be placed on the pump -out port. Once the tank has been inerted, the UST will be <br />completely excavated and removed. <br />During the UST removal process, a County official and a fire department representative <br />will be present to inspect and monitor tank removal activities. Upon removal of the UST, <br />the tank will be secured according to California Health and Safety Code 24400 and <br />transported via truck to the Erickson, Inc. facility in Richmond, California for final <br />disposition. The following information details the specific hazards and protective <br />measures to be taken during completion of this task. <br />UST excavation overburden will be temporarily stockpiled on site until it is determined <br />that it is either suitable for reuse, or requires disposal. Stockpiled soil will be managed <br />according to Apex's standard operating procedures. <br />Following removal of the USTs from the excavation pits, soil samples will be collected <br />from approximately two feet into the native soil beneath the appropriate ends per Tri - <br />Regional Guidelines for UST Removals; and composite soil samples will be collected from <br />the excavated soil stockpile. Should groundwater be encountered during UST removal <br />activities, one grab groundwater sample may be required to be collected for analysis. The <br />on-site County official will determine the analysis. <br />CAPROIHTMBANrAVWP.0O -5- <br />