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SECTION 3.ENVIRONMENTAL MONITORING Page 3.4 <br /> Report In <br /> Parameter/Constituent Units of <br /> Total Organic Carbon mg/1 <br /> Specific Conductance (field) µmhos/cm <br /> pH (field) pH units <br /> total Dissolved Solids mg/1 <br /> Hardness (as CaCO2) mg/1 I <br /> 3.4 GROUNDWATER TREATMENT AND STORM WATER DISCHARGE SYSTEM <br /> As a result of the Corrective Action Pian and the RWQCB Order No.92-143, monitoring must be <br /> performed on the pumped groundwater and on the receiving water. Samples shall be analyzed <br /> for the following constituents at the indicated frequencies: <br /> INFLUENT TO GROUNDWATER TREATMENT SYSTEM <br /> Sampling <br /> Constituents Units Type of Sample Freguency <br /> Flow mgd -- Continuous • <br /> pH pH units Grab Weekly <br /> Specific Conductivity µmhos/cm Grab Weekly <br /> EPA Method 601 Rg/I Grab Semi-annually <br /> ICAP (Metals Scan) mg/1 Grab Annually <br /> EFFLUENT FROM GROUNDWATER TREATMENT SYSTEM 1 <br /> Sampling <br /> Constituents Units Type of Sample Freguency <br /> pH pH units Grab Weekly <br /> Specific Conductivity µmhos/cm Grab Weekly <br /> 20°C BODS mg/I, lbs/day Grab Quarteriy2 <br /> Suspended Solids mg/l, lbs/day Grab Quarterly2 <br /> EPA Method 601 Rg/I Grab Monthly'-3 <br /> ICAP (Metals Scan) mg/1 Grab Annually <br /> 'Analyses with a monthly sampling frequency shall be conducted weekly for four I <br /> consecutive weeks,and monthly thereafter following initial discharge to Little Johns Creek. <br /> 2After the first four consecutive samples, all other constituents shall be sampled 1 <br /> monthly. , <br /> 31f any sample shows detectable volatile organics, the Discharger shall immediately <br /> resample and reanalyze the effluent for the detected constituent(s), and shair continue sampling i <br /> the effluent on a weekly basis until the constituent(s) concentrations are below detection. r <br /> r <br /> R.W.Beck and Associates city of Stockton <br /> 1811.002 <br />