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l <br /> RAMAGE <br /> ENVIRONMENTAL,INC. - <br /> 465 S.Meadows Pkwy,Ste.20 PMB 157 <br /> Reno, NV 89521 <br /> �� j! 1�i, I� Tel(775)851-7239 <br /> Fax(775).851-7240 <br /> C'S�S 01 2 LOGU <br /> August 29, 2008 <br /> EivVli=�i_iv°��F= �r HE.ALTi-1 <br /> ?E R 7,I,i,i jSI'R VICES <br /> Ms. Lori Duncan, R.E.H.S. <br /> ` San Joaquin County EHD <br /> 600 East Main Street <br /> Stock�on, CA. 95202-3029 _ 3 <br /> + <br /> r Re: Letter Work Plan—Destrncfion.of Groundwater Monitoring Wells <br /> San Joaquin County Agricultural Commissioner's Office <br /> 503 East 10`h Street, Tracy, California <br /> P.HS/EHD Site Code: 1793, Global ID 4T060770236 <br /> Dear Ms. Duncan: <br /> 4 On behalf of the San Joagiiin.County Facilities Management Department, Ramage <br /> Ehvironmental .Inc::is pleased to submit.to the SanJoaquin County,EHD_this work plan to <br /> destroy the three'groundwater monitoring wells.at the site. The locations of tkie-. three <br /> rrionitoring wells (MW-1, MW-2 and MW-3) are shown on the attached site plan. <br /> By telephone on August 25,.2 008, Ms. Margaret Lagorio of EHD requested this work plan to <br /> destroy the monitoring wells, pending approval of case closure..Currently,.the case closure is <br /> pending regulatory review and'approval of Ramage Environmental''s Soil Vapor Sampling <br /> and Human Health Risk Assessment Report, dated August 29,'2008.' <br /> P g <br /> -_ _ - y' g ells,~Ramage Environmental will obtain a permit from EHD. Since <br /> W <br /> ,rror,to estro in t e w <br /> two of the monitoring Wells.are located within the city ofl-ra.cy 14amilton Anoyright-of-w-ay, <br /> Ramage Environmental will contact the city to obtain access permission'and/or an. <br /> encroachment permit.' At Least two working days prior to destroying the wells, Ramage <br /> Environmental will contact EHD-and Underground Service Alert(USA) so.that regulatory <br /> and underground utility clearance inspections can be scheduled. <br /> The three monitoring wells will be destroyed by a C-57 licensed drilling contractor'(i.e:, <br /> driller); under the.supervision.of Ramage.Environmental and.inspection.of EHD. All three . <br /> E monitoring wells are 2-inch diameter.arid.20 feet;deep, and.are installed in;$=inch diameter <br /> boirehole's. The wells all include 4 5 feet of polyvinyl chloride(pvc).well screens, spanning <br /> from 5 to'20 feet below ground surface.(bgs), and blank pyc casings.fromI ground surface to 5 <br /> feet bgs. The monitoring well logs are attached. <br />