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l y <br /> +Y <br /> .Y <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD ATTACHMENT 8 <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 91-25000 <br /> 12 DECEMBER 1991 REVISION <br /> GENERAL ORDER FOR LAND DISPOSAL <br /> OF GROUND WATER FROM CLEANUP OF <br /> PETROLEUM FUEL POLLUTION <br /> INFLUENT MONITORING <br /> Influent samoles shall be collected after the last connection before the wastes <br /> enters the treatment process. Influent samples should be representative of the <br /> volume and nature of the influent. Time of collection of a grab sample shall be <br /> recorded. she following shall constitute the influent monitoring program: <br /> Constituents 1lnits Type of Sampling <br /> Sample =re uenc <br /> Total Petroleum Hydrocarbons mg/] Grab <br /> Benzene ug/1 Monthly <br /> Ethylbenzene Grab Monthly <br /> Toluene ug/ Grab Monthly <br /> Xylene ug/] Grab Monthly <br /> Lead (total )* jug/] Grab Monthly <br /> • µg/l Grab Monthly <br /> EFFLUENT NOKTORING <br /> Effluent samples shall be collected downstream from the last connection through <br /> which wastes can be admitted into the discharge. Effluent samples should be <br /> representative of the volume and nature of the discharge. Time of collection of <br /> a grab sample shall be recorded. The following shall constitute the effluent <br /> monitoring program: <br /> Constituents Units Type of Sampling <br /> Sa-_ mole Fre uenc <br /> Specific Conductivity �allhos/cm Grab <br /> pH pH units Grab Monthly <br /> Flow gpd Monthly <br /> Total Petroleum Hydrocarbons mg/l Cumulative Monthly <br /> Benzene ug/1 Grab Monthly** <br /> Ethylbenzene Grab Monthly** <br /> Toluene /] Grab Monthly** <br /> Xylene <br /> ug/1 Grab Monthly** <br /> 1 <br /> Lead (total )* fcug/g/l Grab Grab Monthly** <br /> Monthly** <br /> it lead is in ground water. <br /> t1 Analyses snalI be conducted weekly for four consecutive weeks follows <br /> creaumt system. 2) If any samole snows detectable TPl1, Benzene. Ethyibe z^following initial <br /> the <br /> the <br /> Dsnail <br /> ischarcer snail immediately resanpie and reanalyze the effluent for the detected constituent{g}, Ara <br /> detec continue samviing the effluent on a weekly basis until the co^stttoentts) concentrations are below <br />