Laserfiche WebLink
5 2 Permitting <br /> . ATC completed three (one for each parcel) well permit applications to drill and install four groundwater <br /> monitor wells (MW-13 through MW-17), one groundwater extraction well (EX-1), and three dual <br /> completion vapor extraction/air sparge wells (YEAS-1 through VEAS-3) and submitted them to the San <br /> Joaquin County Public Health Services prior to initiation of fieldwork In addition, access agreements <br /> were brokered with the adjacent property owners which allowed the installation of off-site wells MW-13, <br /> and MW-15 through MW-17 Copies of the Approved San Joaquin County Public Health Service well <br /> permits are included in Appendix B <br /> 5.3 Drilling and Soil Sampling <br />' Prior to drilling the soil borings, ATC contacted Underground Service Alert (USA) and a private utility <br /> locator service to identify possible subsurface utilities in the vicinity of the proposed boring locations <br /> Following utility clearance, ATC subcontracted West Hazmat Drilling Inc , who utilized a hollow-stem- <br /> drilling rig equipped with 8-inch diameter augers, to install the five groundwater monitor wells, 10-inch <br /> diameter augers, to install the dual completion vapor extraction/air sparge wells, and 12-inch diameter <br /> augers, to install the groundwater extraction well Additional details are provided below <br /> From December 9, 2002 to December 20, 2002 ATC observed the drilling and installation of five <br /> groundwater monitor wells (MW-13 thiough MW-17), one groundwater extraction well (EX-1), and three -� <br /> dual completion vapor extraction/air sparge wells (VEAS-1 through YEAS-3) Figure 4, Site Plan with <br /> Geologic Cross-Section Lines, illustrates the locations of each well Groundwater monitor wells MW-13 <br /> ' through MW-15 were installed as replacement wells in the proximity of MW-6 through MW-8, <br /> respectively Groundwater monitor well MW-16 was installed off-site on the adjacent property to the <br /> ' west, and groundwater monitor well MW-17 was installed off-site on the property east of the site across <br /> Auto Avenue Groundwater extraction well (EX-1) was installed on-site, within the limits of the former <br /> UST excavation The dual completion vapor extraction/air sparge wells (VEAS-1 through VEAS-3) were <br /> ' mtalled along the eastern boundary of the site <br /> The well borings were drilled and sampled in general accordance with ATC's Standard Operating <br /> ' Procedure — Soil Borehole Dulling, Monitor Well Installation and Development, and Soil Sampling, which <br /> is included in Appendix C Undisturbed soil samples were collected at 5 to 10 foot intervals from the <br /> ' borings These samples were utilized for analytical testing, lithologic logging and waste characterization <br /> purposes <br /> All drill cuttings were collected in Department of Transportation (DOT)-approved 55-gallon drums and <br /> disposed of at TPS Technologies, a state certified soil recycling facility located in Adelanto, California <br /> An ATC staff geologist completed lithologic logs for each boring in general accordance with ASTM <br /> ' Method D 2488-90 Bonng Log Notes, Method of Soil Classification, Soil Boring Graphics, and edited <br /> boring logs are included in Appendix D Waste disposal manifests are included in Appendix E <br /> EZ 100966ASAR rpt ATC Associates Inc <br /> 1 115an Diego\EZ Serve11009661Reports1100966SAR001 rpt ATC Project No 43 25827 0026 <br /> ! 7 <br />