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VW <br /> - FkU1M Ground Zero flr�a.lysis PHONE N0. = 209 838 9883 May. 14 1999 10:14AM P2 <br /> C ROUND ZIIt.0 ANALYS)t , 11,- <br /> 1714 Madam Street <br /> Pscalm,Cali[wm>t 95320.1927 ENVIRONNIENTAL HEALTH DIVISION <br /> Tehvbmw )93&9m 304 E. Weber Ave. Third Floor <br /> P. O. Box 388, Stockton CA 95201-0388 <br /> Approved ER' <br /> Denied ❑ <br /> May 14, 1999 1/Conditions e lyEj,�,3 <br /> Mr. Ron Rowe Date 5- 1'4-190l by eL,2� <br /> .San Joagain County Public Health Services <br /> Enrvironmeutal Health Division ( • CAS Mie Opt-7ATUIN d`F <br /> 304 East Weber Avenue, 3rd Floor 5 Ve '5 46Tt--M <br /> Stockton,CA 9$202 2 - /n,+(s(J7AtA.1 p t:'Vm tT- rD U' -OA-G <br /> 3v SSVu/4-pc.0 . <br /> Subject: Knowles/Roek Property, 102 South Wilson Way, Stockton, CA <br /> Recommendation for Continued Soil Vapor Extraction <br /> Dear Mr. Rowe: <br /> The UST Fund has asked for a directive from San Joaquin County PHSIEAD before they will pre- <br /> approve anticipated costs for continued operation of the soil vapor extraction system(SVE) at the subject <br /> Property. <br /> In view of the significant effect the SVE system continues to have on soil contamination at the property, <br /> we recommend continued operation of the system. Through the end of the fust quarter of this year the <br /> SVE system had removed approximately 11,500 pounds of gasoline hydrocarbons from vadose soil <br /> beneath the former USTs. The most recent mass removal rate was approximately SO pounds per week. <br /> Our request for pre-approval from the UST Fund is for an additional six months of SVE operation. The <br /> system will be evaluated frequently for effectiveness, particularly in light of the rising groundwater <br /> situation. <br /> Please comment on our recommendation as soon as practicable. If you have any questions feel free to <br /> contact me anytime. <br /> Respectfully, <br /> Ground Zero Analysis,9c, <br /> �/J//� <br /> Post-it"Fax Note 7671 Date pages <br /> TO From l � <br /> Gregory P. Stahl, RG 5023 Co./Dept. Co. p <br /> CA Certified Hydrogeologist No. 264 Phone# Phone# V Q 2 <br /> co. W. Carl Knowles Fax �y, Fax# <br /> Mr. Pat Riddle, Esq. <br />