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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2003-0044 .g- GENERAL ORDER FOR LAND DISPOSAL OF GROUNDWATER OR SURFACE WATER FROM CLEANUP OF PETROLEUM FUEL POLLUTION Daily 30-Day Daily Constituents Units Median Maximum Naphthalene 11g/1 <5.0 21 Carcinogenic PAHs* µg/1 <0.5 <0.5 MtBE plus other ether oxygenates" µg/1 <0.5 5 Tertiary Butyl Alcohol µg/1 <5.0*** 12*** Methanol µg/1 <50 *** Ethanol µg/1 <5.0 *** 1,2-Dichloroethane µg/1 <0.5 <0.5 (1,2-DCA) 1,2-Dibromoethane µg/1 <0.5 <0.5 (EDB) Lead µg/1 2 2 * Polynuclear Aromatic Hydrocarbons; the sum of benzo[a]pyrene, benz[a]anthraccne, benzo[b]fluoranthene, benzo[j]fluoranthene, benzo[k]tluoranthene, dibenz[a,]]acridine, dibenz[a,h]acridine, 7H-dibenzo[c,g]carbazole, dibenzo[a,e]pyrene,dibenzo[a,h]pyrene,dibenzo[a,i]pyrene.dibenzo[a,l]pyrene,indenot[l,2,3c,d]pyrenc, 5-methylchrysene,I-nitropyrene,4-nitropyrene,1,6-dinitropyrene,1,8-dinitropyrene,6-nitrocrysene, 2-nitrotluorene and chrysene. ** The limit applies to each individual oxygenate compound. ***Due to current technological and economic dynamics for these constituents,site specific approval will be issued for these constituents. Limitations to be determined by Regional Board staff upon review of each submitted Report of Waste Discharge. Appropriate linritations will be set in the Executive Officer's"Notice of Applicability"letter. Note:1)Constituent quantitation(or reporting) limits are to be sufficient to Identify a violation to the above listed effluent limits and/or those specified in the applicable"Notice of Applicability"issued by the Executive Officer, 2)All detection and quantitation limits must be reported with the analytical results. 3) Published literature for Total Petroleum Hydrocarbons as gasoline. provides a taste and odor threshold of 5 pg/l which is applied to the narrative Taste and Odor objective of the Basin Plan, but detection is 50 pg/l and is controlling. 2. The discharge of lead must comply with the above listed limitation unless the Discharger can demonstrate that higher concentrations are a result of naturally occurring background concentrations contained in the source water being treated. Background concentrations may be defined by using the methodology described in Title 27 CCR Section 20415. 3. The discharge shall not have a pH of less than 6.5 nor greater than 8.5. 4. The discharge shall remain within the designated disposal area at all times. D. SOLIDS DISPOSAL Collected screenings, sludges, and other solids removed from the treated groundwater, or generated as the result of groundwater treatment, shall be disposed of in a manner that is