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<br />ðEI <br />Green . <br />. Environment me. <br /> <br />"""',8"".""""0""",,',,om <br /> <br />"On Broadway" Parking Garage Dewatering Proposal <br /> <br />Page 2 <br /> <br />sewer. GEl will transport to and direct a California-certified laboratory to analyze <br />the groundwater sample for VOCs, semi-volatile organic compounds (SVOCs), <br />total petroleum hydrocarbons (TPH) as gasoline, diesel and motor oil, ethylene <br />dibromide, priority pollutant metals, and cyanide on a standard lab turnaround. <br />This analytical documentation will be an attachment in a Permit Application <br />Packet which will include the appropriate EPA NPDES Permit Application Forms <br />and RWQCB Form 200. Application forms will require review and signing by the <br />City. <br /> <br />Once issued, the NPDES Permit will be valid for five (5) years. Thus, annual <br />renewal of the NPDES Permit will not be required. <br /> <br />Task 2: <br /> <br />Dewatering System Start-up & Testing <br /> <br />GEl will assist the City in working with the City's Developer/Contractor in start-up <br />and testing of the system prior to discharging into the storm drain system, in <br />accordance with the NPDES permit requirements. This task will include site <br />investigation, sampling and reporting to the RWQCB, and other work as <br />necessary to operate the system. <br /> <br />More specifically, GEl will conduct the following activities associated with start-up <br />of the groundwater treatment system: <br /> <br />provide written pre-notification to the RWQCB of the planned <br />system start-up date; <br />on the first day of system operation, monitor the extraction of <br />sufficient groundwater until pH, specific conductivity and <br />temperature stabilize; <br />on the first day of system operation, collect one (1) influent and four <br />(4) effluent groundwater samples (2 samples each from 2 different <br />sample points; <br />on the last day of start up system operation, collect one (1) influent <br />and two (2) effluent groundwater samples (1 sample each from 2 <br />different sample points); <br />transport to and direct a California-certified laboratory to analyze <br />the two (2) influent groundwater samples for pH, VOCs, and TPH <br />as gasoline and diesel, and the four (4) effluent groundwater <br />samples for turbidity, pH, TDS, VOCs, TPH as gasoline and diesel, <br />1,4 dioxane and SVOCs. <br /> <br />Page 2 <br /> <br />r- <br /> <br />.. ï' <br /> <br />...- T <br />