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ITEM: 13 <br /> SUBJECT: City of Lodi, White Slough Water Pollution Control Plant, San Joaquin <br /> County—Consideration of NPDES Permit Renewal and Cease and <br /> Desist Order <br /> DISCUSSION: The White Slough Water Pollution Control Plant(Plant) is owned and <br /> operated by the City of Lodi. The Plant is located roughly 5 miles west <br /> of the City of Lodi and approximately 1 mile south of Interstate 5 and <br /> State Highway 12 freeway interchange. The Plant treats domestic wastes <br /> and to some extent a small commercial/industrial component from the <br /> City of Lodi. Industrial wastewater(primarily from food processors) is <br /> collected in a separate sewer and is either directly applied to reclamation <br /> fields or is stored in ponds prior being applied to the reclamation area. <br /> The Plant has an 8.5 mgd dry-weather flow capacity providing secondary <br /> level wastewater treatment. <br /> During summer months, unchlorinated treated domestic wastewater is <br /> not discharged to surface waters but is also applied to the reclamation <br /> area. When treated wastewater is discharged to surface water, it is to a <br /> dead-end portion of Dredger Cut, a water of the United States. Because <br /> there is negligible dilution at the point of discharge and within Dredger <br /> Cut,no mixing zone has been proposed for this permit. <br /> The tentative waste discharge requirements (WDR) and tentative Cease <br /> and Desist Order(CDO) for the Plant were circulated for comments to <br /> "All Concerned Persons and Agencies" and the general public. Based on <br /> the comments received, several changes were made to the tentative <br /> WDR; however, no changes were made to the CDO. <br /> important issues covered in the proposed permit,which are different <br /> from the existing permit, include: <br /> • An increased level of disinfection(tertiary treatment), <br /> • A more stringent residual chlorine effluent limit, <br /> • Limitations on cyanide, lead, and zinc, <br /> • A non-detect limitation on organochlorine pesticides, <br /> • Increased and better monitoring for mercury, and <br /> • BOD limitations to meet DO requirements. <br /> RECOMMENDATION: • Adopt the proposed NPDES permit, and <br /> • Adopt the proposed Cease and Desist Order <br /> Mgmt Review <br /> Legal Review <br />