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labeled with a stick-on label filled out with indelible ink. Each label contained the following <br /> information: <br /> Site Name <br /> Date Collected <br /> Time Collected <br /> Sample I.D. <br /> Sampler's Initials <br /> Analysis Required <br /> Each sample was then sealed into a ziplock baggie and placed into an insulated chest <br /> with ice. These samples were delivered with a Chain of Custody document within 24 <br /> hours to the WESTON Analytics Stockton laboratory. This laboratory is certified by the <br /> State of California to perform the required analyses. Soil samples from the two <br /> southernmost hand auger borings SBA and SB-3 were submitted for analysis for <br /> benzene, toluene, xylene, and ethylbenzene (BTXE) by EPA Method 8020, and for total <br /> petroleum hydrocarbon from gasoline (TPH-G) by EPA Method 8015 -Modified. The soil <br /> sample from SB-2 was archived at the laboratory pending analytical results from SBA and <br /> S13-3.. The three soil borings were backfilled to the surface with concrete. <br /> The monitoring well installed (MW-4) is of four inch diameter schedule 40 PVC. Fifteen <br /> feet of screened section (0.02 inch slot size) was placed in the well. The screen was <br /> placed from 4.5 to 19.5 feet BGS and a slip-on end cap secured with stainless steel <br /> screws was placed at the bottom. A sand pack (#3 sand)was placed from the total depth <br /> of the boring (20 feet BGS) to 4.0 feet BGS. The well was surged using a surge block <br /> to settle the sand pack prior to placing a seal above it, A one foot thick layer of bentonite <br /> chips was laid on top of the sand pack and saturated with water. Concrete was used to <br /> seal the hole above the bentonite plug and at the surface to support a flush mounted <br /> locking Christy box. The well casing was capped with a four inch diameter water tight <br /> locking cap. All well casing (blank and screened pipe) was decontaminated by steam <br /> cleaning prior to use. A summary of the well construction is presented in Table A-1. <br /> Well MW-4 was developed by swabbing and bailing. A total of 110 gallons was removed <br /> via bailing. At the end of the development process, the water derived from the well was <br /> velatively free from suspended sediment. All purge water was containerized in steel <br /> drums, labeled, and left at the site pending analysis. All soil cuttings brought to the <br /> surface during drilling were also containerized, labeled, and left at the site. <br /> All on-site work was performed in accord with WESTON's site specific health and safety <br /> plan. The field work for this project was performed under level D personnel protection. <br /> Air monitoring for volatiles was performed utilizing an HNu photoionization detector (PID), <br /> and Draeger detector tubes for benzene. No sustained levels of volatiles above <br /> background were encountered in either the well boring or the soil borings. <br /> A - 3 <br />