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1 li V <br /> JUN 3a 1993 <br /> I ENVIRONMENTAL!kEALTH <br /> EXCAVATION WORK PLAN <br /> PERMIT/SERVICES <br /> ADDENDUM NUMBER ONE <br /> MANTECA UNIFIED SCHOOL DISTRICT <br /> 2901 E. Louise Avenue, Lathrop, CA. <br /> i <br /> F <br /> The following description of work shall be included as part <br /> 'of the scope of activities intended to remediate contaminated <br /> soil and groundwater at the subject location: <br /> C <br /> .1. The vertical extent of the excavation shall be increased <br /> to approximately -23 ' (see attached revised diagram) .'. <br /> 2 . Excavated soil shall be placed on 6 mil plastic sheeting i <br /> and covered pending analysis and disposition. <br /> i <br /> 3 . The soil storage area shall be burmed to prevent liquids I <br /> from leaching onto adjacent soil. F <br /> 4. All water removed from the excavation shall be pumped, <br /> into temporary aboveground holding tanks, pending I <br /> r analysis and disposal. <br /> n I <br /> 5. Water samples from the excavation shall be analyzed for <br /> TPH-G (8015) BTX&E (8020) and- EDB (8240) . <br /> s <br /> This addendum shall be luded subject to all conditions 'xnc I ' <br /> in <br /> E the primary excavation workplan and site safety plan prepared ' <br />` for this site. <br /> 1 <br /> r <br /> �3 <br /> I <br /> i <br /> 1 <br /> I <br /> II '� <br />