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r <br /> 1 88 `P : 3 51 1 1 rll=1111 E R I C:AhJ EP!G _,� 1�--.�. 1^'3;'5 <br /> f.7 12 F' . W <br /> tyvtiR�NC� 1 S�v G�LSH <br /> SAN JOAQUIN LOCAL DISTRICT August 30, 1988 <br /> ENVIRONMENTAL HEALTH DEFAMENT Job No. G-0148 <br /> Post Office Box 2009 <br /> Stockton, California 95201 <br /> Attention : Mr . David Carla <br /> SUBJECT: ADDENDUM TO PROMSED.-If 21 PLAN <br /> HAZARDOUS MATERIALS Int ESTIGATION <br /> INITIAL SUBSURFACE STUDY <br /> FORMER RULE ENTERPRISES PROPERTY <br /> TRACY, CALIFORNIA <br /> Gentlemen : <br /> Pursuant to your request, we have added the following procedures <br /> to our Work Plan dated July 29, 1888 for the above referenced <br /> site . <br /> 1 . All borings will be grouted with a neat <br /> cement mixture with 5% bentonite, <br /> 2 . All soil boring cuttings will be <br /> contained on-site by completely ? <br /> enclosing with a vi.s usen barrier until <br /> laboratory results haie been reviewed by <br /> San Joaquin County Inslectors; <br /> 3 . The Twining Laboratories, Inc . <br /> 2527 Fresno Street <br /> Fresno, CA <br /> Will be utilized as a subcontractor to <br /> AEL to perform soil analysis on select <br /> samples obtained fom the proposed ti <br /> borings . Select sampl a will be obtained <br /> by screening soil wit a Photoionization <br /> Detector (PID Phot vac Tip I ) and <br /> analyzed in acco dance with the <br /> following EPA methods : <br /> ! <br /> s <br /> h A <br />