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SC&D Boyett Petroleum <br /> 419 South Main Street October 27, 1999 <br /> Manteca, California Page.- 8 <br /> contamination found underlying this site is not from the subject property, but rather <br /> from an off-site release. <br /> 8.0 Recommendations <br /> Based on the conclusions developed during this investigation WHF, Inc., recommends <br /> the following actions: <br /> • Four (4) quarters of monitoring to observe the groundwater direction and gradient <br /> and to evaluate the potential for natural biological attenuation of the contaminates. <br /> • Conduct an off-site investigation to gather evidence supporting the conclusion that <br /> the groundwater contamination is caused by an off-site source. This will be <br /> completed by investigating the groundwater in the up-gradient direction. <br /> 9.0 Limitations <br /> The above represents our best professional opinion as to environmental conditions at this site. <br /> These opinions were derived using data at hand, and using standards of care common to the <br /> environmental consulting community in Northern California_ Future work or change of use at <br /> this site.may generate data that could lead to a change of opini site conditions. <br /> yVIF. lyE,y1 <br /> Prepared by: � �PM H. <br /> i <br /> o <br /> * Expires:June 30,2000 <br /> W.H. Fox, II, REA <br /> Registered Environmental Assessor #00620 q'u'o CALtFe4 <br /> ESS <br /> LAVO. <br /> � 22 339 � rn <br /> de elano, Pt. # 22339 d EXP.s-sa:©l a <br /> California Registered Civil Engineer s�yT� civic <br /> CAv\I <br /> Jason P. Cashman, M.E.M. <br /> L Environmental Specialist <br />