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EXHIBIT B j <br /> 8�#0-932 Middlefield Road <br /> It2-2012-0012-39 <br /> Page 2 <br /> Maximum Diseharge Flow Rate Treatment Systems <br /> 450 gallons per minute(gpm) A Treatment System consis#ing of at least: <br /> • thit�ty fiue extraction wells, <br /> The City of Redwood City has . two 21,004-gallon baffled;settling tanks in <br /> deternuned that the 450 gpm series, <br /> propased discharge flow rate is • five 3,400-pound Organo clay flters in <br /> acceptable to its storm drain's parallel, <br /> capacity on the condition that the . five 2,Q00-pound Granular Activated Garbon <br /> discharge stops in the event of high (GAC)vessels in series, and <br /> creek flows that may exceed the . use of dry ice or carbon dioxide to adjust pH, <br /> culvert capacity. if needed. <br /> Redwood City Partners,LLC will install additional <br /> tanks as needed to remove sediment,and add <br /> pressurized sand fihers if settling tanks cannot <br /> effectively reduce effluent sediment levels and <br /> cantrol turbidity.The t�rgano clay filters and GAC <br /> vessels will be scaled from one to five units <br /> depending on flow, with a unit added for every 100 j <br /> gpm flow. ' <br /> Reminder Notes• : <br /> • Use CIWQS identification number and facility address listed in the tahle for any <br /> future communica#ions. <br /> • Submit the Self-Manitoring Repor[s no later than 45 days fallowingthe last day of the <br /> quarter,and the Annual Reports by February 15`�of each year.If there is no <br /> discharge during the reporting period,please state this information in fhe reports.Late , <br /> reporks and effluent limit violations are subject to mandatory minimum penalties pursuant <br /> ta Water Code 13385(h)&{i). <br /> • Submit reports electronicaily and/or mail to the Water Board address shown on the first ' <br /> page of this notice,Attention:NPDES Wastewater Division.Please note that at any time <br /> during#he term af this Order,the Dischargers inay be notified to eleetronicaily submit ; <br /> the monitoring reports using the California lntegrated Water Quality 8ystem(CIWQS) <br /> Program. <br /> • Ensure that the responsibilities for the treatment system design,installation and <br /> inspection;systevi operation sample coliection,operation and mamtenance; <br /> compiiance monitorir►g,and reporting are satisfactorily and timely performed by <br /> designated staff. <br /> • Discharge from the dewatering system only if the treatment system is in operation. <br /> • Cantinuously monitor for turbidity to evaluate the effectiveness of the pretreatment <br /> process.Attachment E,Mnnitoring and Reporting Program,R2-2012-0012 applies to all <br /> constituents. <br /> • Conduct pH sampling and measurement when the highest quantity of chemical is added <br /> to the treatment system. <br /> 3 <br />