|
� y,z „, Pr,• ,„ �� F
<br /> Rd
<br /> zNOUN,.
<br /> !_-- w
<br /> y -
<br /> On December 18, 1989, Jim Thorpe Oil , Inc. removed two (2) 1,000
<br /> underground fuel tanks which had contained leaded & unleaded
<br /> gasoline and diesel; see Exhibit "A. " Five soil samples were
<br /> taken as shown on Exhibit "B; " one at each end of both tanks, and
<br /> one beneath the pump island. Results of lab analysis showed that
<br /> the samples from the north end of the tanks, (GS#1 & SS#2,) were
<br /> below detection limits, but contamination was reported for the
<br /> other 3; (refer to Table I.)
<br /> A Re-excavation/Resample Work Plan was submitted by Jim Thorpe
<br /> Oil, Inc. on April 4, 1990, to remove additional spoil and
<br /> r-sample as shown on Exhibits "C" & "D."
<br /> Work commenced on August 1, 1990, using Jim Thorpe Oil equipment
<br /> under the direction and supervision of W.J. Hunter, Registered
<br /> 4 Geologist, and Harlon Knoll , EHS. The sedimonts consisted
<br /> primarily of very fine to fine, friable, sandy loam, tan to buff,
<br /> f with occassional lenses of grayish-tan clay. No distinct bedding
<br /> was noted; soil was loose and poorly indurated. The sands were
<br /> primarily quartz and feldspar, with a clayey matrix. Portions of
<br /> the excavation were damp, but quickly dried upon exposure to the
<br /> air.
<br /> A definite petroleum odor was noted from the upper portion of the
<br /> excavation, but became fainter with depth. Some discoloration
<br /> was evident, especially in the area beneath the site of the pump
<br /> island. No free product, odor or color was noted in any of the
<br /> samples placed in :nater, although some showed a slight film an
<br /> fthe water surface.
<br /> The hole was extended to about 25' X 25', and deepened to
<br /> yapproximately 20' at the south end and about 23-24' at the north
<br /> end. Although there was still some apparent contamination
<br /> remaining, the limitations of the equipment prevented further
<br /> excavation. Six (6) samples were taken from the sides and bottom
<br /> of thw excavation as indicated on Exhibits "E" & "F. " They were
<br /> properly sealed, labeled, and placed on ice by W. J. . Hunter,
<br /> stored overnight in as freezer, and transported to Cananie lab the
<br /> fallowing day under proper chain of custody.
<br /> Analysis of the laboratory results showed that the sidewall
<br /> 1 samples taken an the south, west, and north. walls, and the west
<br /> bottom sample, (8--1,) were clean. However, the east bottom
<br /> sample, (8-2,) and the sidewall sample from, the east wall (SW-4,)
<br /> still contained detectable- -levels of contaminants. _ Refer- --to
<br /> > Exhibit "E" and Table II .for test results.
<br /> " D WORK ENLARGE EXISTING EXCAVATION TO THE SOUTH AND
<br /> PROPOSE
<br /> �-' EAST, RESAMPLE AND RETEST FOR CONTAMINATION:
<br /> 2
<br />
|