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sidewalls and bottom or until building structures prevented further <br /> excavation <br /> Prior to backfilling, the saturated bottom of the excavation was <br /> stabilized by placing a 4-foot thick rock base, consisting of 1- to 2-inch <br /> diameter rock, over a geotextile fabric liner The excavation was then <br /> backfilled with clean fill dirt and compacted using construction <br /> equipment The backfill area was subsequently paved with asphalt <br /> cover <br /> ' Ground Water Monitoring a�traction Events <br /> Ground water samples were collected routinely from the five wells <br /> installed at Site #2 during the period from April 1991 through February <br /> 1995 These samples were analyzed for purgeable hydrocarbons and <br /> BTEX constituents Analyses during the earliest monitoring events <br /> also included organic and total lead and ethylene dibromide The <br /> results of the analyses are presented in Section 4 <br /> The selected ground water remedial alternative for Former Tank Site <br /> #2 involved extraction of a fixed volume of hydrocarbon-contairung <br /> ground water from existing monitoring wells. Ground water was <br /> extracted from monitoring well MW-1A during three events <br /> December 1993/January 1994, May 1994, and September 1994 The <br /> ground water extracted during each event was pumped into Baker <br /> tanks for temporary storage and subsequently transported via vacuum <br /> trucks to the City of Stockton Publicly-Owned Treatment Works <br /> (POTW) for direct discharge <br /> 3-5 <br />