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MONITORING AND REPORTING PROGRAM -2- <br /> US ARMY CORPS OF ENGINEERS <br /> PORT OF STOCKTON <br /> MAINTENANCE DREDGING STOCKTON DEEP WATER SHIP CHANNEL <br /> CONTRA COSTA, SACRAMENTO, &SAN JOAQUIN COUNTIES <br /> Constituent/ Sampling Minimum <br /> Analysis Units Frequency Detection Limit (mom <br /> Total Cadmium mg/l Start-up 0.0005 <br /> Total Chromium mg/l Start-up 0.001 <br /> Total Copper mg/1 Start-up 0.001 <br /> Total Mercury mg/1 Start-up 0.0002 <br /> Total Nickel mg/l Start-up 0.005 <br /> Total Lead mg/l Start-up 0.002 <br /> Total Thallium mg/l Start-up 0.002 <br /> Total Zinc mg/l Start-up 0.002 <br /> SEDIMENTATION BASIN DISCHARGE MONITORING <br /> For sedimentation basins having a minimum design hydraulic detention time of ten days, at least five <br /> days prior to the anticipated discharge, samples shall be collected from the sedimentation basin for <br /> the General Parameters. For sedimentation basins having a design hydraulic detention time of less <br /> than ten days, the initial set of samples for General Parameters and Trace Metals shall be collected <br /> within 24 hours of the initiation of discharge. Subsequent samples shall be collected from the basin <br /> water spilling from the sedimentation basin and analyzed according to the following schedule: <br /> Constituent/ Sampling Minimum <br /> Analysis Units Frequency Detection Limit (mg/1) <br /> General Parameters <br /> Flow MGD Daily <br /> pH pH units Daily <br /> Suspended Solids mg/l Daily <br /> Electrical Conductivity µmhos/cm Daily <br /> Turbidity NTUs Daily <br /> Dissolved Oxygen mg/l Daily <br /> Temperature °F Daily <br /> Ammonia mg/l Weekly <br /> 5 Day BOD mg/l Weekly <br /> Fish Bioassay3 % Survival Weekly4 <br /> Trace Metals <br /> Arsenic2 mg/1 Biweekly 1 0.001 <br /> Cadmium2 mg/1 Biweekly 1 0.0005 <br /> Chromium 2 mg/1 Biweekly 1 0.001 <br /> Copper2 mg/1 Biweekly 1 0.001 <br /> Lead2 mg/l Biweekly 1 0.002 <br /> Mercury2 mg/l Biweekly 1 0.0002 <br /> Thallium 2 mg/l Biweekly 1 0.0002 <br /> Nickell mg/1 Biweekly 1 0.005 <br /> Zinc 2 mg/l Biweekly 1 0.002 <br /> 1 Every two weeks starting with the first day of spilling to the river. <br /> 2 Total and dissolved concentrations shall be determined. <br /> 3 96 Hour static test using fathead minnows or Golden shiners. (EPA/600/4-90/027) <br /> 4 Weekly, if discharging under Provision F.1, otherwise monthly <br />