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Remedial Investigation QAPP <br /> Stockton Army Aviation Support Facility,California <br /> Table 17-2 Soil Boring Sampling Design and Rationale <br /> M"W""I Reference Location Location Number of TargetSample <br /> /Potential Figure Identifier Type Sample Identifier Samples Depth SamplingTool Analyte Group <br /> Release Area (feet •• <br /> STK- MW- MW STK-MW0I-SB-[start depth]-[end 4 Evaluate soil at the northwest point of the Facility boundary <br /> 01 depth] and suspected source area at A01 3 <br /> STK- MW- MW STK-MW02-SB-[start depth]-[end 4 Evaluate soil at the southwest point of the Facility boundary <br /> 02 depth] and suspected source area at AOI 3 <br /> STK- MW- MW STK-MW03-SB-[start depth]-[end 4 Evaluate soil adjacent to A01 3 and north Facility boundary <br /> 03 depth] <br /> STK- MW- MW STK-MW04-SB-[start depth]-[end 4 Evaluate soil at A01 2 and the southwest Facility boundary <br /> 04 depth] <br /> STK- MW- MW STK-MW05-SB-[start depth]-[end 4 PFAS,Target 40 Compound List Evaluate soil at A01 1 at the southwest corner of the AOI 1 <br /> 05 depth] <br /> (EPA Method 1633) <br /> STK- MW- MW STK-MW06-SB-[start depth]-[end 4 0-1 ft, 5-6 ft, Surface Air knife, hand Limited Sample Selection Evaluate soil at A01 1 at the northwest corner of the AOI 1 <br /> 06 depth] <br /> 9-10 ft, and <br /> A01 1, Figure and auger, and/or (One sample per well location): <br /> A01 2, and immediately <br /> 17-2 STK- MW STK-MW07-SB-[start depth]-[end subsurface drill rig(DPT or TOC(USEPA Method 9060A) <br /> A01 3 MW depth] 4 above soil sonic) Evaluate soil adjacent to the Facility boundary, at AOI 1 <br /> 07 so <br /> groundwater pH (USEPA Method 9045D) <br /> (One sample per well location at <br /> STK- MW- MW STK-MW08-SB-[start depth]-[end 4 deepest interval): Evaluate soil at A01 1 <br /> 08 depth] Grain Size Analysis (ASTM D-422) <br /> STK- MW- MW STK-MW09-SB-[start depth]-[end 4 Evaluate soil at the northeast Facility boundary <br /> 09 depth] <br /> STK- MW- MW STK-MWIO-SB-[start depth]-[end 4 Evaluate soil adjacent to the A01 1 <br /> 10 depth] <br /> STK- MW- MW STK-MWII-SB-[start depth]-[end 4 Evaluate soil at the southeastern Facility boundary. <br /> 11 depth] <br /> STK- MW MW STK-MWI2-SB-[start depth]-[end 4 Evaluate soil adjacent at the most northeastern Facility <br /> 12 depth] boundary <br /> Total Samples(not including QC) 48 <br /> Notes: <br /> A01 =area of interest MW= monitoring well <br /> ASTM =American Society for Testing and Materials PFAS = per-and polyfluoroalkyl substances <br /> bgs= below ground surface TOC=total organic carbon <br /> DPT= direct push technology USEPA= United States Environmental Protection Agency <br /> PARSONS Worksheet#17&18:Sampling Design and Rationale <br /> Page 118 <br />