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were completed by Greg Drilling & Testing, Inc of Martinez, CA using a combination of direct push and hollow stem auger drilling techniques 4.1 MONITORING WELL DRILLING AND SOIL SAMPLING ' Monitoringwells were installed at the site in accordance with the roved workplan and PP P ' conditions stipulated in the well installation permits from SJCEHD Because the installation of a monitoring well was required inside the main laundry facility, the use of a limited access drill rig was required Due to sampling limitations of the limited access ' drill ng, continuous soil samples from three of the well borings were collected using direct push sampling techniques followed by installation of the monitoring well using ' hollow stem augers Due to the potential concern posed by onsite utilities, the first five feet of each boring were advanced using hand augering techniques The monitoring well ' locations are shown on Figure 2 Pilot borings for monitoring wells MW-2 through MW-4 were advanced using direct ' push drilling techniques The boring for MW-1 was completed with hollow stem augers utilizing a five-foot continuous dry core barrel sampler Continuous soil cores from all of ' the borings were collected from five feet below ground surface (bgs) to the total depth of each boring (approximately 45-feet bgs) The soil cores were logged by a URS field ' geologist and were classified according to the Unified Soil Classification System (USCS), and recorded on standard boring log forms Copies of the boring logs are contained in Appendix B of this report All drilling activities were performed under the supervision of ' a California Registered Geologist Soil cores were screened for the presence of VOCs using a photoionization detector(PID) and the results recorded on the boring logs ' Soil samples from five-foot intervals were collected from each of the bonngs for potential chemical analysis Samples for chemical analysis from borings MW-2 through ' MW-4 were retained in acetate sleeves An approximate six-inch length of the acetate sleeve was removed and the exposed ends covered with a Teflon sheet, and then capped ' with a plastic end cap Soil samples from the five-foot dry core barrel were removed from the core and placed in eight ounce wide mouth glass Jars with Teflon lined lids t Samples were then labeled with project name, date, time of sample collection, and sample identification number, and stored in an iced cooler prior to delivery to the analytical laboratory Sample chain-of-custody protocol was maintained from the time of sample ' collection until transfer to the analytical laboratory ' 4 V\Goodwin ProctorTinalReport doe