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<br />` tank cavities were combined into one Targe excavation. The tank cavity was cxcaavatctl to
<br /> the tlarixirtlum depth possible williin the safe operating limits of the equipment tised. On
<br /> November 7, 13,and 14, 1990,29 soil wimples were collected front:the bottom and sidewalls
<br /> of the excavation at locations selected by Ms. Margaret 1-agorio of the SJCYIIS as follow~:
<br /> • Ten sampics from the bo.torn of the excavation
<br /> Six samples from the cast sidewall
<br /> Six samples from the west sidewall
<br /> Pour saulples from the south sidewall
<br /> • "Three samples from the north sidewall
<br /> Soil samples were collected from the sidewalk at depths of 15 imd 22 feet below ground
<br /> surface, and from the bottom at 25 feet below ground surface. Locations of soil samples
<br /> collected from the limits of the excavation are shown oil Figure 3. The soil removed in the
<br /> process of excavation was stockpiled on the northwest and east sides of the Site.
<br /> All soil samples were collected in clean brass tubes that measured two incht;s in dig meter
<br /> and six inches long. Soil from the exeavation was brought up to the surface in the bucket
<br /> of the excavator, and three to twelve inches of soil were scraped away from the surface.
<br /> The brass tube was t",ren driven 1tnlo the rtewly exposed surface and filled completely so that
<br /> no headspace remained in the tube at either end. lmmediately after filling,each end of the
<br /> tube was covered with aluminum foil and a plastic cap and then�caaled with duct tape. The
<br /> samples were then labeled and stored on ice it a closed cooler chest until delivery to the
<br /> laboratory.
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<br /> ROUX ASSO(:IAXES 5 Dae ff t 110677613!L I
<br /> ONE 0 All! 111:
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