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NOA Drywell Closure and Investigation Work Plan Page 8 of 16 <br /> ' March 18, 2014 <br /> Revised March 20, 2014 <br /> ' Two (2) pre-labeled, one-liter, polyethylene, certified metal-free bottles will be filled for metals <br /> testing. No preservatives will be added since the samples will be analyzed for Mercury. Samples <br /> will be analyzed within the holding time. The samples will be recorded, labeled and stored at a <br /> temperature of approximately 4°C in an ice chest for transportation to the analytical laboratory. <br /> ■ One (1) pre-chilled, pre-labeled 40-ml VOA vials with Teflon septa will be filled for Total <br /> Petroleum Hydrocarbons (TPH) as Gasoline testing. The sample will be preserved by adding <br /> hydrochloric acid to a pH of less than 2. Collection methods specified for volatile organics <br /> should be followed. The sample will be recorded, labeled and stored at a temperature of <br /> approximately 4°C in an ice chest for transportation to the analytical laboratory. <br /> One (1) pre-labeled, one-liter glass bottle with a Teflon septum will be filled using a funnel for <br /> TPH as Diesel testing. The sample will be preserved by adding hydrochloric acid to a pH of less <br /> than 2. The sample will be recorded, labeled and stored at a temperature of approximately 4°C <br /> in an ice chest for transportation to the analytical laboratory. <br /> One (1) one-liter glass bottle with a Teflon septum will be filled for Total Recoverable Petroleum <br /> Hydrocarbons (TRPH) testing. The sample will be preserved by adding hydrochloric acid to a pH <br /> of less than 2. Collection methods specified for volatile organics should be followed. The sample <br /> will be recorded, labeled and stored at a temperature of approximately 4°C in an ice chest for <br /> ' transportation to the analytical laboratory. <br /> 4.3.2 Soil <br /> One (1) sediment/sludge sample will be collected from the floor drain in the Concrete Cure <br /> Room, if available, at one and one-half (1.5) feet bgs. Sludge will be collected using a beaker <br /> attached to a pond sampler. A stainless steel lab scoop will be used to transfer the sludge from <br /> the beaker to the required container. The sediment sample will be placed in an 8-oz. wide- <br /> mouthed glass jar that will be completely filled with no headspace present. The jar will be <br /> t labeled appropriately and then placed in a cooled ice chest for transportation to the analytical <br /> laboratory. <br /> For the soil sampling in the drywells, a truck-mounted drill rig equipped with an eight-inch <br /> hollow-stem auger will be used to overdrill the drywells and collect the soil samples under the <br /> supervision and direction of a California Professional Geologist or Engineer. Drilling fluids will <br /> not be used. For each drywell, two (2) soil samples will be collected from the middle of the well <br /> at fifty-one (51) to fifty-two (52) feet bgs. One (1) soil sample will then be collected from the <br /> middle of the wells every five (5) feet until groundwater is encountered. Overall, we anticipate <br /> the following soil sampling in each drywell: two (2) soil samples collected between fifty-one <br /> ' (51) and fifty-two (52) feet bgs, one (1) soil sample collected at fifty-five (55) feet bgs, one (1) <br /> soil sample collected at sixty (60) feet bgs, one (1) soil sample collected at sixty-five (65) feet <br /> bgs, and one (1) soil sample collected directly above the water table at approximately (70) feet <br /> bgs. One (1) additional soil sample will be collected for Replicate Samples Quality <br /> Assurance/Quality Control purposes. <br /> 902 Industrial Way•Lodi,CA 95240-209.367.3701•Fax 209.369.4228 02014 Neil O.Anderson&Associates,Inc <br />