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PUBLICHEALTH SER VICES ,op4� iN <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA 1\11) . M.P H_ <br /> Health Officer • c. , P <br /> 4 �iFo �va <br /> P.O. Box 2009 0 ( 1601 East Hazelton Avenue) 0 Stockton, California 95201 <br /> (209) 468-3400 <br /> DANTE JOHN NOMELLINI <br /> NOMELLINI CONSTRUCTION COMPANYCopy <br /> P 0 BOX 1461 FEB 10 1992 <br /> STOCKTON CA 95201-1461 <br /> RE: 1045 W. Charter Way IN REPLY REFER TO SITE CODE: 1779124 <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHS) has reviewed the <br /> Groundwater Assessment Report dated August 13, 1991, submitted by Kleinfelder and has the following <br /> comments. <br /> Pursuant to Section 2652 (d) of the Underground Storage Tank Regulations (California Code of <br /> Regulations, Title 23, Subchapter 16) a quarterly monitoring report shall be submitted to Public Health <br /> Services, Environmental Health Division and Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) until the investigation and cleanup of the site is deemed adequate. Please begin submitting <br /> Quarterly Status Reports immediately. The report is to show the: <br /> -status of investigation and cleanup activities including the results of all investigations <br /> completed to date; <br /> -proposed continuing or next phase of investigation; <br /> method of cleanup proposed or implemented, schedules for the completion of the <br /> investigation of the site and remediation; <br /> -method and location of disposal of the released hazardous substance and any <br /> contaminated soil, groundwater or surface water; <br /> -manifest required for transport of hazardous substances; <br /> -monitoring well data including groundwater elevation, pH, conductivity, gradient; <br /> -analytical results of groundwater or soil sampling; and <br /> -site map showing the "zero line" of contamination, if known, and changes in the above <br /> measurements over the last quarter. <br /> According to Tri-Regional Board Staff Recommendations the next step of the investigation is to <br /> determine the extent of the soil and groundwater contamination. Additional soil borings and/or <br /> monitoring wells should be completed until zero lines of soil and groundwater contamination are <br /> physically identified. A monitoring well will need to be placed in each verified downgradient direction. <br /> The concentration of the contaminants found in the soil samples collected from under the waste oil tank <br /> in 1988 are of concern to PHS/EHD. This area should be addressed in future work. <br /> Our files indicate that the previously excavated contaminated soil was used to backfill the former tank <br /> excavation areas. The "Groundwater Assessment Report" states that clean material was used as backfill. <br /> Please submit documentation as to the disposal of the contaminated soil and of the type and amount of <br /> the clean backfill material. <br /> If <br /> A Division of San Joaquin county Health Care Services 10 <br />