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D VIM _RR <br /> 17 <br /> 7._*� Stewart's Beacon Property <br />+ Phase H-Ground Water Assessment Proposal <br /> Page: 4 <br /> u 4.2 Boring logs <br /> [detailed logs.%rill be made of each boring. The inforrm)tion noted will include: sample <br /> depths,How counts,horizons of detectable contamination(detected by field methods), <br /> soil(Jarisification utilizing the Unified Soil Classification System and sediment <br /> description(color,texture,composition,.hardness,moisture content,and post- <br /> depositional changes that hate occurred in the sediments). <br /> r 4.3 Soil Sampling . <br /> Soil samples will be collected at 5 foot intervals in the first boring to char <br /> ac#erize the <br /> sediment types and to confirm the lateral continuity of the strata. If a contamination <br /> odor is detected in soil above the aquifer,soil samples will be collected and analyzed.. <br /> Brass sample tubes will be sealed with aluminum foil,capped,labeled and <br /> irrunediately refrigerated for transport to a state certified analytical laboratory. Soil <br /> samples not analyzed will be kept refrigerated until project completion. <br /> 4.4 Sample Screening <br /> Because not every soil sample collected will be analyzed,a scr:-e3ting�•Ncess is used to <br /> _ select representative samples. The goal of this selective process is to reduce the cost of <br /> the project without compromising the quality. From field observations noting sediment <br /> type,moisture content;and the presence of contamination odor certain samples can be <br /> selected that represent discrete horizons. The presence of contamination barriers can <br /> also bo detected by this method. <br /> 4.5 Disposition of Soll Boring Cuttings <br /> . Since drilling will be performed outside the zone of soil contamination,drill cuttings <br /> will be land spread on the properties the monitoring wells are installed. <br /> 4.6 Monitoring Well Design <br /> Monitoring wel„for the upper aquifer will extend to a depth of 15 feet and will be <br /> constructed of 2-inch threaded-joint PVC pipe(schedule 40)that's perforated from the <br /> bottom of the well to a depth of 5 feet. Medium aquarium sand will be used to create a <br /> _ filter pack that extends from the bottom of the well to 2 feet above the perforated zone.. <br /> -. --- ----`-J-- -- A-bentunit� vac(Quik Gel/Benseal mix)will be emplace above the filter pack in the------ -- - <br /> annular spece by using the tremie method. The monitoring well will be secured and a <br /> � w <br /> _ 4 <br />