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� I .` California Regional Water Quality Control Board Central Valley Region „- Robert Schneider,Chair �v Winston H.Hickox n (C` I} 1\` ;rts Secretaryfor Sacramento Main Office w lv�f� Environmental intemet Address: http://www.sweb.m.gov/-mqcb5 Protection 3443 Routier Road,Suite A,Sacramento,Cafifomia 95827-3003 Phone(916)255-3000•FAX(916)255-3015 M pY 2 32003 2003 ENVIRONMENT HEALTH 22 May PERMIT/SERVICES Ted Johnston City of Ripon—Public Works 259 North Wilma Avenue Ripon, CA 95366 NOTICE OF VIOLATION, INCOMPLETE MONITORING REPORT, CITY OF RIPON, SAN JOAQUIN COUNTY Staff has reviewed the City of Ripon's March 2003 self-monitoring report (received on 1 May 2003) and has determined it is incomplete. The City's Monitoring and Reporting Program(MRP) was revised on 27 February 2003 and this is the first report submitted under the revised MRP. Staff's review of the report revealed the following inadequacies: • Influent domestic wastewater flow rates are not recorded on a daily basis. • Influent industrial wastewater flow rates are not recorded on a daily basis. • Barium was not reported as an analyte in the standard minerals as required for influent industrial wastewater. • Trihalomethanes were not reported for influent industrial wastewater. • The industrial wastewater application rate is not recorded on a daily basis. • The industrial wastewater biochemical oxygen demand is not recorded on a daily basis. • The total nitrogen application rate uses a nitrogen concentration factor that appears to be too low. The calculation uses a concentration of 98.2 mg/L of total nitrogen; without flow weighted average data, the average of the four available sample events is 241.5 mg/L. This apparent error results in significant under reporting of the nitrogen loading rate. • In groundwater monitoring results nitrogen is not reported in the correct form; "Nitrogen as N" is incorrectly reported rather than"Nitrate as N." • The units for total coliform are not presented on the summary table and the laboratory sheet is not included. • TDS was not presented in the report; the data was obtained from the analytical laboratory by Regional Board staff. • Barium is not reported in the standard minerals analysis for groundwater. California Environmental Protection Agency Qd Recycled Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a fist of simple ways you can reduce demand and cut your energy costs,see our Web-site at httrc//,w --h an- -