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Beacon Station No. 513 January 19, 1998
<br /> Lodi. California Tank Removal Closure Rep.Qrt
<br /> to the Erickson, Inc. facility in Richmond, California under manifest by Trident Truckline
<br /> Inc. of Hayward, California. Copies of the shipping manifests are included in Attachment B.
<br /> Subsequent to removal of the three USTs and at the request of the SJC PHS/EHD inspector,
<br /> analytical soil samples were collected from a depth of 13 to 15 feet below surface grade
<br /> (bsg) in the area beneath the west ends of each former UST (T-1-W-14', T-2-W-14', and T-
<br /> 3-W-14'), the middle (T-1-M-14', T-2-M-13', and T-3-M-14'), and east (fill) ends (T-1-E-
<br /> 15', T-2-E-14', and T-3-E-14'). Three soil samples were collected from the product line
<br /> trenches, one from the north end (PL-N-3'), one from the middle (PL-M-4'), and one from
<br /> the south end (PL-S-4'). Four soil samples were collected from beneath the former
<br /> dispensers (D-1/2-3', D-3-3', D-415-5', and D-6-3'). The soil sample locations are depicted
<br /> on Figure 2.
<br /> On November 18, based on the analytical results of sample D-415-5', JNS conducted
<br /> additional excavation in the area under former dispensers 4 and 5. A soil sample was
<br /> collected at approximately 8 feet bsg (D-4/5-8'). The excavation was terminated at 8 feet
<br /> bsg due to the proximity to the canopy support post to the excavation area.
<br /> EXCAVATED SOIL
<br /> On November 17, JNS stockpiled the soil removed from above the former USTs. This soil
<br /> was designated as stockpile SP-1. The soil excavated from the product line trenches and
<br /> dispenser islands on November 18 was designated as stockpile SP-2. On November 20, the
<br /> UST cavity was enlarged to the west to accommodate the two new, longer 14,000-gallon
<br /> capacity replacement USTs. The UST cavity overexcavation soil and soil excavated from an
<br /> air and water line trench around the canopy area perimeter were stockpiled as SP-3.
<br /> The excavated soils were characterized as three separate stockpiles. Characterization
<br /> samples were collected from stockpile SP-1 (SP-1-a,b,c,d and SP-1-e,f,g,h), which
<br /> represented approximately 200 cubic yards (cy); from stockpile SP-2 (SP-2-a,b,c,d and SP-
<br /> 2-e,fg,h), which represented approximately 200 cy; and from stockpile SP-3 (SP-3-a,b,c,d)
<br /> which represented approximately 100 cy.
<br /> On December 17, 1997, Horizon collected characterization samples from stockpile SP-4
<br /> (SP-4 a,b,c,d and SP-4 e,f,g,h), which represented approximately 200 cy of soil excavated
<br /> from new utility trenching and water-saturated soil from a leaking water pipeline.
<br /> The stockpiled soils were transported by Dillard Trucking of Byron, California to the TPS
<br /> Technologies, Inc. facility in Richmond, California for thermal remediation and recycling.
<br /> An approximate total of 700 cy were excavated and removed from the site. Copies of the
<br /> non-hazardous soils shipping manifests are included in Attachment C.
<br /> Analytical Results - SQii
<br /> All of the soil samples were prepared and chilled for transport under chain-of-custody
<br /> (COC) protocol on the sampling date-of-collection and sent to Kiff Analytical (Kiff), a
<br /> 1513-11.tcr 2 HORIZON ENVIRONMENTAL INC.
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