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ATTACHMENT C— INFORMATION SHEET C-6 <br /> MODEL MONITORING AND REPORTING PROGRAM <br /> STATE WATER RESOURCES CONTROL BOARD <br /> ORDER WQ 2014-0153-DWQ <br /> GENERAL WASTE DISCHARGE REQUIREMENTS <br /> FOR SMALL DOMESTIC WASTEWATER TREATMENT SYSTEMS <br /> POND SYSTEM MONITORING 12 <br /> Influent Monitoring <br /> Influent samples shall be taken from a location that provides representative samples of the <br /> wastewater and flow rate. At a minimum, influent monitoring shall consist of the following: <br /> Constituent Units Sample Sample Reporting <br /> Type Frequency Frequency <br /> Flow Rate a gpd Meter Continuous Quarterly <br /> Total Nitrogen b mg/L Grab Monthly Quarter) <br /> gpd denotes gallons per day. mg/L denotes milligrams per liter. <br /> a. At a minimum, the total flow shall be measured monthly to calculate the average daily flow for the <br /> month. If wastewater is stored and applied to land, flow rate measurement may also be needed on the <br /> effluent flow. <br /> b. When needed for 50% reduction effluent limit calculation. <br /> Wastewater Pond Monitoring <br /> All wastewater and treated wastewater storage ponds (lined and unlined) shall be monitored <br /> as specified below: <br /> Constituent Units Sample Type Sample Reporting <br /> Frequency Frequency <br /> Dissolved Oxygen mg/L Grab Monthly Quarterly <br /> Freeboard 0.1 feet Measurement Monthly Quarterl <br /> Odors -- Observation Monthly Quarter) <br /> Berm condition -- Observation Monthly Quarter) <br /> mg/L denotes milligrams per liter. <br /> Effluent Monitoring <br /> Effluent samples shall be taken from a location that provides representative samples of the <br /> wastewater. At a minimum, effluent monitoring shall consist of the following: <br /> Constituent Units Sample Sample Reporting <br /> Type Frequency Frequency <br /> Biochemical Oxygen Demand m /L Grab Monthly Quarter) <br /> Determine the need for monitoring based on the flow rate and Attachment 1. Biochemical oxygen demand <br /> limits apply with flow rates above 400 gpd; nitrogen limits may apply at flow rates above 20,000 gpd. (See <br /> General Order Section D, Effluent Limits and Attachment 1, Nitrogen Effluent Limit Evaluation.) <br /> September 23, 2014 <br />