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C A M B R I A - <br /> Cambria's February 26, 1998 telephone conversation with Eric Travena, soil samples were not <br /> required due to the absence of native soil containing observable petroleum hydrocarbons. <br /> Evidence of petroleum hydrocarbon presence was observed in one of the three fuel overspill <br /> excavations. This evidence consisted of approximately one cubic yard of highly localized, dry, <br /> stained pea gravel which was clumped together directly beneath the fuel overspill bucket. Cambria <br /> Field Staff advised the site foreman to dispose of the impacted pea gravel and noted that no <br /> evidence of petroleum hydrocarbon presence was observed below or adjacent to the impacted <br /> region of the excavation. No evidence of petroleum hydrocarbon presence was observed in any of <br /> the remaining fuel overspill excavations or in the waste oil overspill excavation. <br /> CONCLUSIONS <br /> Due to the limited extent of low level petroleum hydrocarbon presence observed, further <br /> investigation in the vicinity of the fuel and waste oil overspills is not warranted at this time. <br /> If you have any questions regarding information presented in this report, please contact Mike <br /> Prinz at 707-935-4853. <br /> Sincerely, <br /> Cambria En ental nology, Inc. <br /> QRp�ESSIO, _ <br /> Mike Prinz ��� �,LUNp F,y <br /> Staff E gineer <br /> Cl) <br /> PN <br /> No.C46725 <br /> Diane M. Lundquist, P.E. sy C10- �Q <br /> Principal Engineer "S' 0;.Cpl-���� <br /> C46725 <br /> cc: Tim Hargraves, Equiva Services LLC <br /> Alex Perez, Equiva Services LLC <br />