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waWHITLEY# BURCHETT APPENDIX A <br /> and Associates, Inc. <br /> January 13, 1989 RECEIVED <br /> Mr . Fran Forkas JAN 18 1989 <br /> Water/Wastewater Superintendent <br /> Citv of Lodi CITY �F <br /> 1331 South Ham Lane "��^� P�s�,c � LODI <br /> Lodi, California 95240 xsCEPggT,�,``r <br /> Subject : White Slough Water Pollution Control Plant <br /> Groundwater Monitoring Program <br /> Dear Mr . Forkas : <br /> We are pleased to submit this technical <br /> report <br /> outlwastewater <br /> the <br /> City <br /> recommended groundwater of°Lodi ' ste <br /> nWhigSloughrWater Pollution <br /> facilities at the <br /> wastewater treatment and <br /> Control dant . The City provides wa <br /> disposal through these facilities . The treatment facility is <br /> operated under both a National PoliutantDcaenentsm (WLR) `„ <br /> System (NPDES) permit and Wase DischargeRequire <br /> he Reg Water Quality Control Board, Central <br /> issued by the eg <br /> valley Region egQCB) . Some of the treated effluent generated <br /> at the RW facility is disposed of through storage ponds acid <br /> irrigation while the remainder is discharged <br /> O o White 8Si6c041 <br /> via Dredger Cut . The current WDR permit <br /> issued in 1986 . Terms of that order include requirements <br /> for <br /> the City to conduct a groundwater monitoring program <br /> the holding ponds . <br /> The recommended groundwater monitoring program generally <br /> complies with the requirements of Subchapter 15 of Chapter 3 <br /> of Title 23 of the California Administrative Code (Sub ehapter <br /> 15) . The objective of these req <br /> urements issufficient number of wells at appropriate locations and depths <br /> to yield groundwater samples that are representativeowater <br /> background water quality and the quality <br /> of the ground„passing the points of compliance . " Well construction must <br /> be <br /> such as to pted revent both surface pollutants from penetrating <br /> into the well and cross-contamination of theuboundarra <br /> iess . <br /> For Lodi, the points of compliance are the plant <br /> that are hydraulicly up-gradient and down-gradient from the <br /> holding ponds . <br /> TREATMENT PLANT SITE GEOHYDROLOGY <br /> White Slough WateC1Pollaboon aomilelsouthtofsthecintersection <br /> southwest of the , Figure 1 is a <br /> of State Route 12 and Interstatpe Route S . Fig lant <br /> vicinity map of the treatment lant area . The p <br /> 33 QUAIL COURT, SUITE 300,WALNUT CREEK, CA 94596 (415) 945-6850 <br />