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t <br /> NiECA C �. <br /> a � <br /> ante a <br /> v s <br /> F MAII <br /> kllry <br /> •.® `` '"� ; PUBLIC WORKS DEPARTMENT <br /> If rwr1�� WASTEWATER QUALITY CONTROL FACILITY <br /> DATE: OCTOBER 17, 2003 <br /> TO: MICHAEL KUMMER <br /> ENVIRONMENTAL SCIENTIST <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD- <br /> CENTRAL VALLEY REGION <br /> FROM: WARREN SHANNON <br /> WASTEWATER SYS E SUPERINTENDENT <br /> SUBJECT: REPORT OF OFFSITE EFFLUENT DISCHARGE <br /> Confirming our conversation of October 14, 2003, City staff identified 2 leaks in the levees surrounding <br /> the City's agricultural irrigation fields (see attached map). Small washouts in the levee indicated that <br /> undisinfected effluent had traveled through a gopher hole in the levee and entered the South San Joaquin <br /> Irrigation District (SSJID) drain that traverses the property. The leaks probably occurred on October 13, <br /> 2003. The exact time and volume of the discharge is not known, however based on the size of the <br /> washouts, we estimate that the total volume of the discharge is less than 10,000 gallons. In addition to <br /> the Regional Board, on October 14 we also notified the State Warning Center, SSJID, San Joaquin <br /> County Environmental Health, and the California State DHS office in Stockton. <br /> We took three water samples from the SSJID drain on October 16. The samples will be analyzed for <br /> fecal coliform to see if any environmental impacts are evident from the release. We will provide the <br /> results of the analyses to you as soon as they are available. In the future we will sample the ditch as <br /> soon as possible upon discovery of a release. <br /> To prevent future releases, irrigation runs will be carefully monitored, and the status of the levee will be <br /> regularly checked. We are also continuing to disk the field edges to destroy as many gopher tunnels as <br /> possible. <br /> Please call if you have any questions. <br /> Thank you. <br /> c: Phil Govea <br /> Senior Engineer <br /> Mike Gilton <br /> South San Joaquin Irrigation District <br /> Donna Heran <br /> San Joaquin County Environmental Health <br /> 1001 W. CENTER ST. • MANTECA, CA 95337 (209) 239-8433 FAX (209) 825-2359 <br /> Nnwdw edea rVff <br />