Laserfiche WebLink
Excavation Remediation Report Advanced Environmental Concepts, Inc. <br /> V <br /> Soil containing detectable concentrations of petroleum constituents was excavated and spread uniformly in <br /> a treatment area for land farming treatment. The treatment cell was constructed by first excavating a <br /> rectangular pit 90 feet wide, 140 feet long, and 4 feet deep and stockpiling the excavated material separately <br /> for use as backfill for the contaminated area. The "borrow pit" was then used for treatment of the <br /> contaminated material by shuttling the impacted soil from the stockpile area into the pit using a front loader <br /> and spreading the prepared material into a uniform pad within the excavated area. The treated material was <br /> ,r oxygenated and hydrated in order to promote rapid degradation of petroleum constituents. A total of 40 <br /> discreet soil sample points were collected and composited into 10 individual samples for laboratory analyses <br /> in order to demonstrate successful treatment of the impacted soil. Figure 7 illustrates the treatment cell and <br /> sampling grid configuration. Analytical results of the treatment cell confirmation samples are presented in <br /> Table 8. Laboratory reports and Chain-of-Custody documentation are contained within Appendix B. <br /> TABLE-8 <br /> imp Analytical Results -Soil Treatment Cell Confirmation <br /> 07116/98 <br /> {ppm} <br /> CONSTITUENT TPH-G61MTBEB-NZENE TOLUENE ETHYLBENZENE XYLENES <br /> SAMPLE I.D. »;;: Nisi <br /> V <br /> A-1,2,3,4 ND ND ND ND ND ND <br /> B-1,2,3,4 ND ND ND ND ND ND <br /> C-1,2,3,4 ND ND ND ND ND ND <br /> D-1,2,3,4 ND ND ND ND ND ND <br /> 60 E-1,2,3,4 ND ND ND ND ND ND <br /> F-1,2,3,4 ND ND ND ND ND ND <br /> G-1,2,3,4 ND ND ND ND ND ND <br /> H-1,2,3,4 ND ND ND ND ND ND <br /> 1-1,2,3,4 ND ND ND ND ND ND <br /> J-1,2,3,4 ND ND ND ND ND ND <br /> DETECTION1-0 .005 005 -Ov5 .005 .005 <br /> LIMIT <br /> ,r The floor of the excavation was covered with a 1-fnot thick layer of drain rock and then backfilled with the <br /> clean material which had previously been removed from the"borrow pit' during construction of the treatment <br /> cell. <br /> V <br /> Project: AEC 9SC-1707 9 <br /> 4 <br /> •ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND <br /> 4400ASHE ROAD.#206 • BAKERSFIELD.CA 93313 8051831-1646 FAX 605/831-1771 <br /> rr <br />