Laserfiche WebLink
to the Unified Soil Classification System and screened for organic vapors using a photoionization <br /> detector (PID) The Geoprobe Sample Collection and Description Logs with the PID <br /> measurements are included as Appendix C <br /> 2 2 2 Groundwater Grab Sam lin <br /> A groundwater grab sample was collected from each of the push-point borings To collect the <br /> groundwater grab samples, a temporary well constructed of 1/2-inch diameter well screen and <br /> casing was lowered into the open borehole From this temporary well, a groundwater grab <br /> sample was collected by lowering a polyethylene tubing and check valve system down into the <br /> groundwater column Using an oscillating motion, groundwater was pumped to the surface and <br /> into laboratory-supplied glassware <br /> Each of the push-point sod borings was sealed with a cement/bentonite grout The grout was <br /> poured from the surface to the bottom of the hole using a tremae tube Surface pavement was <br /> 1 restored to its existing condition using asphalt cold patch <br /> 2 2 3 Laboratory Analyses of Sall and Groundwater Grab Samples <br /> All soil and groundwater grab samples were contained, labeled, packaged and stored in an iced <br /> cooler for transport under chain-of-custody documentation to American Environmental Network <br /> (AEN), a state of California Department of Health Services certified hazardous waste testing <br /> laboratory (#1172) located in Pleasant Hill, California <br /> Based on field observation and PID measurements, the following soil and groundwater samples <br /> were submitted for analysis <br /> PUSH-POINT BORING SOIL SAMPLE DEPTHS (Feet bgs) GROUNDWATER SAMPLE <br /> SB-1 20 YES <br /> SB-1A 5, 10, 15 <br /> SB-2 NO <br /> SB-3 5, 10, 15 YES <br /> SB-4 5, 10, 15 YES <br /> SB-5 5, 10, 15 YES <br /> SB-6 5, 10, 15 YES <br /> SB-7 10 YES <br /> SB-8 10 YES <br /> SB-9 10 YES <br /> SB10 10 YES <br /> SB-11 YES <br /> i <br />