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W <br /> .I�M IN <br /> Me <br />'it ME- <br /> 4 <br /> PUBLIC HEALTH SERVICES <br /> 5,1Ni0r 1P,%MIN <br /> J061 KIIMMM IfJkl I'll <br /> I ILaitll Ullifev �q• ado- <br /> I'.f). Itnx 2009 a (I60I Bast llaut•]fon Accmle)a Stockton,C:difornia 95201 <br /> Zile oR <br /> (209)4M-3400 <br /> -JUL 1 1991 <br /> KENNETH OLDS <br /> LAMMERSVILLE SCHOOL DISTRICT <br /> 16555 W VON SOSTEN <br /> TRACY CA 95376 <br /> RE: Lammersville School IN REPLY REFER TO SITE CODE: 1749 <br /> 16555 W. Von Sosten <br /> Tracy <br /> Upon review of our file and reports submitted to this office <br /> regarding the above referenced site, it is evident that groundwater <br /> remediation is necessary. In the Problem Assessment Report dated <br /> July 161 1990, Groundwater Technology recommended groundwater <br /> extraction and treatment. We have consulted Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) about your site. We <br /> agree with your consultant's recommendation but current data shows <br /> the contaminated groundwater has moved and more site investigation <br /> is needed to establish the extent of contamination so an <br /> appropriate remediation plan can be developed. <br /> A work plan to define the contamination should be submitted by <br /> August 15, 1991. A draft Remedial Action Plan (RAP) should be <br /> submitted once the extent of contamination has been defined. Pump <br /> tests should be performed on the monitoring wells to determine the <br /> cone of depression created and the size of pump required for <br /> groundwater extraction. Disposal of the extracted water has to be <br /> addressed. Pursuant to Section 280.67, Subpart F of 40CFR of the <br /> Federal Register, our agency will conduct a public notice to <br /> consider comments on your draft (RAP) after we have received it. <br /> Pursuant to Section 2652(d) of the Underground storage Tank <br /> Regulations (California Code of Regulations, Title 23, Subchapter <br /> 16) a quarterly monitoring report shall be submitted to Public <br /> Health Services, Environmental Health Division and Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) until the <br /> investigation and cleanup of the site is deemed adequate. <br /> Submission of the reports is to begin immediately. The report is <br /> to show the: <br /> . 5� A Ili,k-il W Mn Imup1m I'mm,Ik.d?h I.1w ni, <br />