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Ogden Environmental Services <br /> Mr. William S. Rickman February 15, 1989 <br /> Page 2 <br /> As shown on Plate 2, Sample 1 (in the northwest excavation bottom) indicated <br /> 137 ppm diesel on the fuel fingerprint analyses. Hydrocarbons were nondetected <br /> in the fuel fingerprint for all other samples. Total volatile hydrocarbons were <br /> detectable at 1.5 and 1.0 ppm in Samples 1 and 13 and were nondetectable in the <br /> remaining twelve samples. <br /> On February 11, 1989, an additional 50 cubic yards of material were exca- <br /> vated from the Sample 1 location and transported to the contaminated material <br /> stockpile. Materials were excavated until there were no trace of organic vapors <br /> using a HNu, PID. The additional excavation depth was about 2 to 3.5 feet, and <br /> the nominal size of the area excavated was about 15 by 30 feet in plan. <br /> A reverification sample (designated Sample IR on Plate 2) was obtained and <br /> submitted for fuel fingerprint laboratory analyses, as was performed on the <br /> previous 14 verification samples. The results were nondetectable and are <br /> included on Plate 2, with the detailed results provided in the appendix. <br /> Copies of all test results (including full QA/QC results with blanks and <br /> spikes) were hand-carried and presented to Mr. Boggs, of the Central Valley <br /> RWQCB, on the morning of February 14, 1989. Photos before, during, and after the <br /> additional excavation (of February 11, 1989) , in the NW bottom of the pit also <br /> were reviewed with Mr. Boggs. <br /> Copies of all test results also were hand-delivered to the San Joaquin Local <br /> Health District office on the morning of February 14, 1989. Several unsuccessful <br /> attempts were made to obtain an appointment to personally present the data to Me, <br /> Diane Hinson. <br /> The following are attached and complete this report: <br /> Plate 1 verification Sample Locations <br /> Plate 2 Verification Sample Test Results <br /> Appendix Laboratory Tests Data with QA/QC and Chain-of-Custody <br /> Documentation <br /> Very truly yours, <br /> MCCLkLLAND CONSULTANTS (WEST) , INC. <br /> Thomas D. Matteucci <br /> Project Geologist <br /> ___T\(Qw^ <br /> Thomas W. McNeilan, P.E. <br /> TDM/TWM:val Vice President <br /> Copies Submitted: (4) <br /> 1308A/A-2 <br /> :'McClelland consultants <br />