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CITY COUNCIL JANET S. KEETER <br /> LARRY D. HANSEN, Mayor Interim City Manager <br /> JOHN BECKMAN CITY OF L O D I SUSAN J. BLACKSTON <br /> Mayor Pro Tempore PUBLIC WORKS DEPARTMENT City clerk <br /> SUSAN HITCHCOCK D. STEPHEN SCHWABAUER <br /> EMILY HOWARD CITY HALL, 221 WEST PINE STREET City Attorney <br /> KEITH LAND P.O. BOX 3006 RICHARD C. PRIMA, JR. <br /> LODI, CALIFORNIA 95241-1910 Public Works Director <br /> (209) 333-6706 <br /> FAX (209) 333-6710 <br /> EMAIL pwdept@lodi.gov <br /> http:\\www.lodi.gov <br /> September 7, 2004 <br /> mD <br /> SED <br /> Mr. George W. Lockwood, PE SF I, 0 9 2004 <br /> NPDES Unit, Delta Watershed <br /> Central Valley Regional Water Quality Control Board ENVIRONMENT HEALTK <br /> 11020 Sun Center Drive, Ste. 200 PERMIT/SERVICES <br /> Rancho Cordova, CA 95670-6114 <br /> SUBJECT: Groundwater Monitoring Status Report <br /> NPDES Permit, Order No. 5-00-031 <br /> White Slough Water Pollution Control Facility <br /> City of Lodi, San Joaquin County <br /> The City has reviewed the comments presented in your August 20, 2003, letter <br /> regarding the City's Groundwater Monitoring Status Report—June 2003. The City has <br /> collected additional monitoring data and expanded its evaluation of the data in response <br /> to your comments. Responses to your specific comments are presented below along <br /> with several additional comments regarding the status of the City's monitoring effort. <br /> Enclosed are the following: <br /> 1. Tabular Presentation of Groundwater Quality Data by Well <br /> 2. Supplemental Groundwater Elevation Contour Figures <br /> a. Monthly - July 2003 through May 2004 <br /> b. Average -August 2001 through May 2004 <br /> 3. Tabular Presentation of Storage Pond Quality Data <br /> 4. Tabular Presentation of Surface Water Quality Data <br /> 5. Groundwater Specific Conductivity (Electrical Conductivity) Contour Figures <br /> a. Monthly -August 2001 through May 2004 <br /> b. Average -August 2001 through May 2004 <br /> 6. Supplemental Groundwater Nitrate Contour Figures <br /> a. Monthly - June 2003 through May 2004 <br /> b. Average —August 2001 through May 2004 <br /> 7. Updated Time-Series of Groundwater Elevations and Nitrate (as N) <br /> Concentrations by Well <br /> a. August 2001 through May 2004 <br /> LLOCKW OOD_NPDESPERMIT.DOC <br />