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J <br /> iAodj <br /> CHRONOLOGY <br /> { <br /> 200 N BECKMAN RD <br /> LODI <br /> SITE CODE: 1849 <br /> 1 000 gallon unleaded and 8 000 gallon larvicide <br /> os/13/s6 g ' , g � <br /> tank removed. Six soil b"rings drilled. <br /> 1 <br /> 12/10/86 1-8,000 gallon UST removed - (larvicide) - <br /> Excavation occurred to a depth of 31 feet below <br /> ground - TBH and BTEX were present 31 feet below <br /> the gasoline tank - Sampling below the weed oil ` <br /> and larvicide tank revealed no detectible <br /> hydrocarbons - <br /> 12/86 3 groundwater monitoring wells installed - No <br /> groundwater contamination present - <br /> )A '} � <br /> 1991 Quarterly groundwater monitoring program began - <br /> 06/14/92 MW-4 installed downgradilnt -� MO-2 and MO-3 were <br /> dry - <br /> 08/25/92 MW-1 and MW-4-ND- P <br /> MW-2 and MW-3 dry- <br /> fl y <br /> Screen- MW-4-50' thru 70' <br /> MW-3-30' thru 55' <br /> MW-2-30' thru 55' <br /> MW-1-30' thru 55' <br /> 02/17/94 Received and approved workplan for 4 soil borings <br /> and 2 hydropunches thru 21 existing dry monitoring <br /> wells. <br /> k <br /> r � <br /> 6 <br /> A � <br /> F <br /> � s <br />