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_ Regional <br /> Cent,�r l'Valley Region <br /> �. i s,__ <br /> Steven T.Butler,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretaryfor Sam alriento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/—rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 3 May 1999 <br /> . Wes Johnson <br /> County of San Joaquin <br /> Department of Public Works <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> VIEW OF"FOOTHILL SANITAR Y LANDFILL, FIRST QUARTER 1999, GROUAD WATER <br /> AND SURFACE WATER MONITORING REPOR T99 <br /> Regional Board staff has reviewed the Foothill Sanitary Landfill, First Quarter 1999, Groundwater and - <br /> Surface Water Monitoring Report,dated 15 April 1999. Additionally,we have received your response <br /> (dated 8 April 1999)to our comments on the monitoring report for the fourth quarter 1998. Your <br /> responses are satisfactory and staff notes that most of the deficiencies we commented on have already <br /> been corrected ilh the first quarter report. We appreciate the very timely response. <br /> Volatile organic compounds were detected in monitoring well MW-3 during first quarter sampling. The <br /> county has ordered that this well be resampled and will report the results of the sampling and analysis to <br /> the Regional Board. Please respond in writing informing this staff of the scheduled date for resampling <br /> monitoring well MW-3, and the anticipated date for submittal of the analytical results. <br /> Regional Board staff notes that the quantitative turbidity value of the groundwater samples was not <br /> recorded in the field, (a visual observation of turbidity was provided). Turbidity is a required parameter <br /> specified in the Monitoring and Reporting Program Order Number 94-258. Please include the turbidity <br /> for the groundwater in future reports. <br /> We understand that during the second quarter of 1999,your sampling consultant will report the well <br /> recovery time for the purging/sampling events. Additionally,during the second quarter 1999,the <br /> Standard Observations will be recorded on the summary sheets that you have developed. You included <br /> a copy of this form as Appendix F in the first quarter 1999 report. <br /> If you have any questions or comments regarding our review,please call me at(916)255-3140. <br /> NDY W. ARANO <br /> Associate Engineering Geologist <br /> cc.: Robert McClellon RENS,Public Health Services, Environmental Health Division <br /> A:wwa <br /> H:\sanjoaqu\foothill\IQ991tr.doc <br /> California Environmental Protection Agency <br /> ea Recycled Paper <br /> i <br />