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Alk <br />KL EIN-FELDER <br />Based upon the data obtained during our observations and analytical results the following <br />conclusions were formulated: <br />1) Review of the analytical results of the three soil and the two groundwater samples analyzed <br />from Disposal Sites B and C show that reported levels were either non detect at or above <br />laboratory reporting limits or were below the regulated levels and PRGs summarized on <br />Table 1. <br />2) Verbal authorization was given by Robert McCollum of the PHS/EHD that backfilling of <br />Disposal Sites B and C be conducted on July 16, 1999. <br />3) The debris material at the two disposal sites (B and C) appeared to be removed. <br />4) Debris removed from the two disposal areas were moved to construction debris stockpiles on <br />site for later disposal or recvclin(U). <br />5) The slaked lime and Bine material Isom Disposal Site B was hauled to the lime ponds [all the <br />lime in the lime ponds will he h�uidled in accordance with the Waste Discharge Requirements <br />(WDRs) 997-204, for the lime imids1. <br />6) Three of six monitoring wells N4W-7. MW -9 and MW -1 1 surrounding the Disposal Areas B <br />and C were successfully drilled out and grouted to the surface in accordance with the well <br />abandonment permit. The remaining three monitoring wells MW -8, MW -10 and MW -12 <br />Nvere unable to be located and were likely destroyed during grading activities at the site. <br />Based upon the data obtained (IL11-HiL, our observations and analytical results the following <br />recommendations were formulated: <br />A) Based upon the analytical results within this report and the intended use as an industrial site, <br />Kleinfelder recommends no lirther evaluation .of the former Disposal Sites B and C. <br />Furthermore, Kleinfelder recommends that the disposal sites be considered "clean -closed." <br />B If during construction activities or grading activities, contaminants are discovered, the <br />siunatories of this report should be contacted. <br />C) A copy of this report should be submitted to the PHS/EHD and the Regional Water Quality <br />Control Board (RWQCB) 1 -or their review and consideration. <br />This report is subject to the limitations round in Chapter 8 of this report. <br />20-3978-03, W16/2019766 <br />© 1999. Kleinfelder, Inc. <br />r <br />Page 2 of 20 <br />September 9. 1999 <br />