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Lo <br /> TASK 2 - OBTAIN NECESSARY PERMITS <br /> ASE will obtain a drilling permit from the SJCEHD. ASE will also notify <br /> ,. Underground Service Alert (USA) to have underground utility lines <br /> marked in the site vicinity. <br /> +— TASK 3 - DRILL SIX SOIL BORINGS AT THE SITE AND COLLECT SOIL <br /> AND GROUNDWATER SAMPLES FROM THE BORINGS <br /> w ASE will drill six soil borings at the locations shown on Figure 2. The <br /> borings will be drilled using a Geoprobe or similar type drill rig. The <br /> k drilling will be directed by a qualified ASE geologist. Undisturbed soil <br /> samples will be collected at least every 5-feet, at lithographic changes, and <br /> from just above the water table for subsurface hydrogeologic description <br /> Lo and possible chemical analysis. The samples will be described by the ASE <br /> geologist according to the Unified Soil Classification System. The samples <br /> will be collected in brass or acetate tubes using a drive sampler advanced <br /> `r ahead of the boring as the boring progresses. Each sample will b e <br /> immediately removed from the sampler, trimmed, sealed with Teflon tape <br /> and plastic caps, secured with duct tape, labeled with the site location, <br /> sample designation, date and time the sample was collected, and the <br /> ...� initials of the person collecting the sample. The samples will be placed into <br /> L an ice chest containing wet ice for delivery under chain of custody to a <br /> CAL-EPA certified analytical laboratory. <br /> �- Soil from the remaining tubes not sealed for analysis will be removed for <br /> hydrogeologic description and will be screened for volatile compounds <br /> with an organic vapor meter (OVM). The soil will be screened by emptying <br /> soil from one of the tubes into a plastic bag. The bag will be sealed a n d <br /> placed in the sun for approximately 10 minutes. After the hydrocarbons <br /> have been allowed to volatilize, the OVM will measure the vapor through a <br /> small hole, punched in the bag. These OVM readings will be used as a <br /> screening tool only since these procedures are not as rigorous as those <br /> �.. used in an analytical laboratory. <br /> A groundwater sample will be collected from each boring. Drilling will be <br /> `W halted at the water table and a Powerpunch or similar type device will be <br /> utilized to collect groundwater samples from the borings. The <br /> groundwater samples will be contained in 40-m1 volatile organic analysis <br /> (VOA) vials without headspace, preserved with hydrochloric acid, labeled <br /> ` with the site location, sample designation, date and time the samples were <br /> L. collected, and the initials of the person collecting the samples, placed in <br /> 574 Grant Line Road, Tracy Assessment Workplan - March 1998 <br /> -3- <br />