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SECTIONONE project Information <br /> Following the installation of groundwater monitoring wells,groundwater samples were collected <br /> quarterly and analyzed for VOCs. Mr. Ross Atkinson(RWQCB)requested that groundwater samples be <br /> collected and analyzed for metals and general minerals (only total dissolved solids [TDS] after the first <br /> event)starting the fourth quarter of 2006(4Q06). <br /> Based on the 4Q06 monitoring results,RWQCB sent a letter to Tandy Corporation dated <br /> February 20,2007,which identified eight constituents(TDS,aluminum,arsenic,barium,iron,lead, <br /> manganese,and nickel)that exceeded water quality goals,and requested Tandy Corporation to investigate <br /> the extent of groundwater impacts. In a meeting on May 24,2007,Mr. Atkinson concurred with the <br /> recommendation in the Quarterly Monitoring Report dated April 30,2007,to suspend the groundwater <br /> monitoring activities for VOCs,and also agreed that additional groundwater monitoring results were <br /> needed before completing additional groundwater investigation activities. <br /> In a meeting on November 1,2007,Mr.Atkinson specified that the following two items were needed <br /> before RWQCB could decide whether to conduct further investigation,continue groundwater monitoring <br /> activities,or to close the site: (1)information as to whether a local water service company provides water <br /> to residents in the area near the site,and(2)the results of a well search following receipt of RWQCB's <br /> authorization to complete the well search. URS provided the findings of these two items in a letter to the <br /> RWCQB dated May 20,2011. URS recommended no further action for groundwater activities. The <br /> RWQCB agreed that on-site groundwater issues had been resolved to their satisfaction <br /> Scope of Work <br /> URS will perform the following field activities: <br /> ® Mobilization/Demobilization; <br /> • Contact USA North at least 48 hours in advance to notify service of subsurface penetration; <br /> • URS personnel supervise the well destruction of MW-1 through MW-3. Drillers will excavate an <br /> area approximately 2 feet by 2 feet to a depth of 2 feet below ground surface(bgs) (but no more than <br /> 4 feet bgs)at each well. Drillers will then pressure grout from total depth to surface. Soil from the <br /> excavation pit will be spread near each well. <br /> H:\WPROCESS\25532\WORLDENTERPRISE\WELL DESTRUCTION\HTTACHMENT C WORLD ENTERPRISES HSP TG EDITS.DOC\18-NOV-11\\ 1-3 <br />