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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2003-0044 -2- GENERAL ORDER FOR LAND DISPOSAL OF GROUNDWATER OR SURFACE WATER FROM CLEANUP OF PETROLEUM FUEL POLLUTION 5. Petroleum constituents discharged into groundwater at various sites throughout the Region adversely impact beneficial uses or pose a threat to existing and potential beneficial uses of groundwater. The constituents are undergoing remediation with oversight from this Regional Board. Remediation of the impacted groundwater includes groundwater extraction with treatment and subsequent discharge of the treated groundwater to land. Occasionally groundwater with petroleum fuel pollution enters a surface watercourse or surface drainage. Cleanup of such a discharge to surface waters may require the discharge of treated water to land. 6. Refined Stoddard Solvent (non-halogenated) is a petroleum distillate that, because of its chemical properties,may be covered by this Order. 7. Discharge of ground or surface water that contained pesticides (including herbicides and insecticides), halogenated solvents and petroleum constituents commingled with pesticides (except as noted in Part C) are not covered by this Order. If the ground or surface water contains constituents not addressed in this Order, the discharger must submit a report of waste discharge for an individual waste discharge requirement. 8. The information in the attached Information Sheet was considered in developing the Findings of this Order and is a part of this Order by reference. 9. On 22 November 1991, the Regional Board adopted General Order No. 91-25000 establishing waste discharge requirements for discharge to land of treated groundwater from cleanup of petroleum fuel. Order No. 91-25000 is not current with all types of fuel compounds and cleanup technologies and must be updated. 10. Wastewater generated from investigation and cleanup of groundwater with fuel pollution includes,but is not limited to,the following: a. groundwater that has been polluted by petroleum constituents, b. unpolluted groundwater pumped from beneath a layer of free product in order to establish a cone of depression to aid in the containment and extraction of the free product, C. groundwater extracted during short- and long-term pump tests, d. well development water, e. purge water extracted prior to well sampling, and f. groundwater released due to failure of treatment system. These wastewaters may be produced, stored, and treated on a continuous or batch basis.