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2.0 FIELD INVESTIGATIONS <br /> investigation will be completed in conjunction with the field investigation associated with <br /> the ten-year sampling event. <br /> Table 1 presents the samples proposed for the additional investigation at the former bagging <br /> plant and the rationale for collecting these samples.The proposed sample locations target <br /> features of interest such as the loading or equipment storage areas after a review of <br /> historical photographs of the former bagging plant.The actual sample locations will be <br /> based on field conditions(e.g.,verification of former bagging plant's concrete pad,access <br /> issues). <br /> Table 1 <br /> Sampling Table for the Former Bagging Plant at the Koppel Stockton Terminal <br /> Ten-year Evaluation and Additional Investigation at Monitoring Well KP-3 Workplan <br /> Total <br /> Depth <br /> Sample (feet Number of <br /> ID bgs) Samples Rationale <br /> K11-01 15 4 soil samples Adjacent to KP-3 where elevated <br /> (including 1 FD)a concentrations of nitrate were recently <br /> and 1 GW sample detected in groundwater. <br /> a,b <br /> K11-02 15 3 soil samples and 1 Approximately 15 feet southeast of KP-3 to <br /> GW sample a,b characterize the general downgradient extent <br /> of the nitrate source area. <br /> K11-03 15 3 soil samples and 1 Approximately 15 feet northwest of KP-3 to <br /> GW sample alb characterize the northwest extent of the <br /> nitrate source area. <br /> K11-04 15 3 soil samples and 1 Located inside the Koppel property line and <br /> GW sample"b downgradient of KP-3. <br /> K11-05 15 3 soil samples and 1 Adjacentleast of the southeast comer of the <br /> GW sample ax L-shaped former bagging plant(a potential <br /> source of nitrate). <br /> K11-O6 15 3 soil samples and 1 South and east of the L-shaped former <br /> GW sample a'b bagging plant where equipment may have <br /> been stored. <br /> K11-07 15 4 soil samples South of the northern portion of the L-shaped <br /> (including 1 FD)band former bagging plant where equipment may <br /> 1 GW sample a. have been stored. <br /> K11-08 15 3 soil samples and 2 West of the L-shaped former bagging plant <br /> GW samples near its former driveway where materials <br /> (including 1 FD)a'b may have been unloaded. <br /> KP-3 Existing 1 GW sample` Location with elevated concentrations of <br /> MW nitrate detected recently in groundwater. <br /> Notes: <br /> a Three soil samples with depths of 0-2,24,and 4-6 feet bgs will be collected from each of sample locations Kll- <br /> Ol through K11-8,identified above and will be analyzed for nitrate,total kjeldahl nitrogen,ammonia, <br /> exchangeable and soluble ammonium,and pH. <br /> b One grab groundwater will be collected from each of sample locations K11-01 through K11-8 identified above <br /> and will be analyzed for ammonia,nitrate(both filtered and non-filtered),and total dissolved solids. <br /> 2-2 <br />