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1 � <br /> MONITORING AND REPORTING UROGRAM 00- -5 - <br /> CLASS II SURFACE IMPOUNDMENT <br /> THE BURLINGTON NORTHER AND SANTA FE RAILWAY CO . <br /> STOCKTON INTERMODAL FACILITY <br /> SAN JOAQUIN COUNTY <br /> Table 4 - Vadose Zone Monitoring <br /> Parameters Units Frequency <br /> Field Parameter <br /> Flow Rate gallons/month Monthly <br /> Temperature °C Quarterly <br /> Specific Conductance umhos/cm Quarterly <br /> pH pH number Quarterly <br /> Monitoring Parameters <br /> mg/L Quarterly <br /> Total Dissolved Solids mg/L Quarterly <br /> TPH-diesel mg/L , Quarterly <br /> TPH-oil & grease ug/L Quarterly <br /> Volatile Organic Compounds <br /> (EPA Method 8260, see Attachment C) mg/L Quarterly <br /> Chloride mg/L Quarterly <br /> Sulfate mg/L Quarterly <br /> Nitrate - Nitrogen mg/L Quarterly <br /> Dissolved Metals (Barium, Copper, Lead, <br /> & Zinc) <br /> 5 . LCRS Monitoring <br /> The LCRS sump shall be inspected quarterly for leachate . Upon detection of leachate in a previously dry <br /> LCRS , the Discharger shall immediately collect a grab sample of the leachage and shall continue to <br /> collect grab samples of the leachate at the following frequencies thereafter. The LCRS shall be sampled <br /> and analyzed for the following : <br />