ARCHIVED REPORTS_XR0005213 - Laserfiche WebLink

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fenced and has an open pit where underground tanks have been removed A record,review of County files indicates that there is an outstanding request for further characterization at this site We understand that there was significant contamination encountered during the tank removal The northwest corner is reported to be the site of a former Shell service station The property is presently an open field with no indication of prior use A review of County records did not produce any information about this property This site closure was reportedly conducted prior to UST requirements The southwest corner is reported to be an abandoned Arco Gasoline Service Station The property is fenced A review of agency files did not produce any information about this property A discussion with County staff yielded a recollection that the property owner had been queried about the presence of underground tanks and had informed the County that all tanks had been removed No venfication was apparently provided and no follow-up was performed This closure also was apparently completed prior to UST closure regulations 3.0 WORKPLAN Park has developed a scope of work to address the terms outlined in the letter, from the PHSIEHD dated January 4, 1993 The proposed scope of work was summarized in Section 12, and selected assessment activities are further described in the following sections 3.1 Utility Survey Prior to conducting any subsurface investigations Underground Service Alert will be notified to locate any utilities entering the site This will serve to assess any potential drilling obstructions beneath the subject site and enhance the assessment of man-made structures potentially acting ' as conduits for migration of contaminants 3.2 Soil Borings Three soil borings will be drilled to total depths of approximately 85 feet b s or 10 feet below first groundwater for soil sampling and installation of groundwater monitoring wells The tlocations of the groundwater monitoring wells will be off-site in up-gradient, dawn-gradient and northwesterly directions from the site These proposed locations are shown on Figure 2 Actual boring locations will be selected when field work commences Soil borings will be advanced using a truck mounted drill ng with hollow-stem continuous flight augers The augers will be steam cleaned prior to drilling each boring The lithology and other ' pertinent data will be recorded on a field boring log in accordance with the Unified Soil Classification System (USCS) Soil cuttings from the borings will be placed in DOT-approved 55-gallon drums until evaluated I A 1!2572 WP 4 I I