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i <br />► I h.� <br /> Soil samples selected for chemical analysis were sealed <br /> t. with aluminum foil, plastic caps, and airtight tape. The <br /> samples were labeled and immediately placed in iced storage <br /> for transport to the analytical laboratory for testing. A <br /> Chain cf Custody Record was initiated by the geologist and <br /> accompanied the samples to the laboratory. A copy of this <br /> ° record is included in Appendix A of this report. <br /> !" Drill cuttings were left at the site with spoils from <br /> the tank excavation. Disposal of the soil remains the <br /> r: responsibility of Chapin Brothers, Inc. Roger Foott <br /> i <br /> Associates, Inc. , can arrange to have the soil removed to an <br /> appropriate disposal facility with the authorization of <br /> i Chapin Brothers, Inc. . <br /> i <br /> 2.2 MQnitorin a Well1 Construction <br /> � i <br /> Monitoring well MW1 was constructed in boring B1 using <br /> thread-jointed, 4-inch-inner diameter, Schedule 40 polyvinyl <br /> chloride (PVC) casing. No chemical cements, glues, or <br /> solvents Were used in well construction. The screened <br /> f 3 <br /> portion of the well consists of factory-perforated casing <br /> with 0.020-inch-wide slots. <br /> �7 <br /> z ; <br /> The well screen extends from the total depth of the <br /> k. well to approximately 5 feet above the upper zone of <br /> saturation to allow sampling at the air/water interface in <br /> i the formation during seasonal fluctuation of groundwater <br /> levels. The base of the well was fitted with a threaded PVC <br /> plug; the top of the well was fitted with a watertight <br /> t� locking cap. <br /> The annular space of the well was packed with No. 3 <br /> --- - ---:-..._ __Monterey__sand.-.t.o_._appxoximately..l_..foot.. above-.the.....perforated _ <br /> l casing. A 2-foot plug consisting of bentonite pellets was <br /> - placed above the sand as a seal against cement entering the <br /> f <br /> sand pack. The remaining annulus was backfilled with a <br /> ROGER FOOTT ASSOCIATES, INC. <br /> t <br />