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ATTACHMENT 1 1-4 <br /> NITROGEN EFFLUENT LIMIT EVALUATION <br /> ORDER WQ 2014-0153-DWQ <br /> GENERAL WASTE DISCHARGE REQUIREMENTS <br /> FOR SMALL DOMESTIC WASTEWATER TREATMENT SYSTEMS <br /> Some domestic wastewater streams (domestic wastewater originating in factory or <br /> warehouse situations) may exceed the typical municipal wastewater strengths due to <br /> a lack of diluting flows from showers, dishwashers, etc. Such flows are not excluded <br /> from coverage by the General Order; however, the discharge shall be evaluated to <br /> determine if nitrogen effluent limits are appropriate. <br /> A5 Nitrogen Removal May Be Required? If the Regional Water Board Basin Plan or <br /> groundwater studies indicate that nitrogen is a constituent of concern, then nitrogen <br /> reduction may be required. The appropriate limit shall be based on site conditions as <br /> evaluated in Step B. <br /> A6 Go to "NITROGEN EFFLUENT LIMIT DETERMINATION"flowchart: If the preliminary <br /> evaluation (Step A) indicates a nitrogen effluent limit may be required, proceed to the <br /> Nitrogen Effluent Limit Determination flowchart to determine if an effluent limit for <br /> nitrogen is required. <br /> September 23, 2014 <br />