Laserfiche WebLink
1 <br /> 1 APPENDIX D <br /> SAMPLE COLLECTION METHODOLOGY <br /> i <br /> Field Area samples <br /> i� <br /> The shallow soil samples collected in the field area portion of <br /> the Site were collected using hand auge,ring! equipment. Disturbed <br /> soil samples were placed in clean glass jars, sealed, labeled, <br /> and placed into a chilled cooler for deiivery to the laboratory. <br /> The hand auger was cleaned with Alconox, a laboratory-grade <br /> detergent and rinsed with distilled water between each sampling <br /> 1 <br /> location <br /> i <br /> Northeast Area Samples <br /> The ground-water and soil samples in the vicinity of the fuel <br /> tanks were collected using hollow-stem auger to drill to the <br /> l desired sampling depth. The drilling was conducted by All Ter- <br /> rain Drilling, Inc. of Roseville Califo <br /> , rnia. Soil samples g p es were <br /> collected using a modified California sampler fitted with clean <br /> brass tubes. The tubes were sealed by placing a plastic cap over <br /> each end and securing the cap with electrical tape. Ground-water <br /> samples were collected by lowering a clean Teflon bailer or brass <br /> tube into the bottom the borehole, and gently pouring the water <br /> sample collected into laboratory-supplied 40-m1 VOA vials. All <br /> soil and ground-water samples collected 11 f or .1laboratory analysis <br /> were labeled, and placed in a chilled cooler for delivery to the <br /> laboratory. All boreholes were grouted1lin with a cement- <br /> bentonite mixture in accordance with the requirements of the <br /> SJLHD, and were inspected by a SJLHD inspector, <br /> The shallow soil samples collected in the vicinity of the Quonset <br /> but for pesticide analysis were either hand-augered, or a shovel <br /> was used to dig to the appropriate sampling :'depth, and a dis- <br /> turbed sample was collected using a clean hand trowel. Soil <br /> samples at locations Q1 through Q3 werelcolh'ected for analysis of <br /> pesticides using hand augering equipment. Sramples from Q1 and Q3 <br /> I were collected at depths of approximately one and three feet <br /> below the ground surface; only one sample, at one foot below <br /> grade, was collected from Q2 due to theiinability of the hand <br /> auger to drill through the gravelly layer present at this loca- <br /> tion. Samples collected at locations Q4:'-Q13: were obtained by <br /> shoveling to a depth of approximately nine inches below grade, <br /> and excavating the remaining depth to one foot below grade using <br /> a clean stainless steel trowel . <br /> The auger and hand-trowel were cleaned with Alconox and rinsed <br /> 1 with distilled water prior to each usage', samples were placed in <br /> Ir <br /> D-1 I <br /> t <br />