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ATTACHMENT A <br /> • STATE WATER RESOURCES CONTROL BOARD <br /> MONITORING AND REPORTING PROGRAM NO. 97-10-DWQ <br /> FOR <br /> GENERAL WASTE DISCHARGE REQUIREMENTS (WDRs) <br /> FOR SMALL DOMESTIC WASTE SYSTEMS <br /> Septic Tank Monitoring <br /> Effluent Monitoring <br /> Monitoring of septic tank effluent shall include the following: <br /> Type of <br /> Paramete ULi s Sample Sampling Frequency <br /> Flow Gals/day Estimate Monthly <br /> Flow estimates may be obtained from water meter readings. <br /> Maintenance and Inspection <br /> Septic tanks shall be inspected and pumped as described below. An inspection is not <br /> required during the year a septic tank is pumped. <br /> Type of Minimum <br /> Parameter Units Measurement Inspection Frequence <br /> Sludge depth and scum Feet Staff Gauge Annually (by April of each <br /> thickness in each compartment year) <br /> of each septic tank <br /> Distance between bottom of Inches Staff Gauge Annually (by April of each <br /> scum layer and bottom of year) <br /> outlet device <br /> Distance between top of Inches Staff Gauge Annually (by April of each <br /> sludge layer and bottom of year) <br /> outlet device <br /> • Septic tanks shall be pumped when any one of the following conditions exist or may <br /> occur before the next inspection: <br />