Laserfiche WebLink
-2- <br /> WASTE DISCHARGE REQUIREMENTS FOR <br /> CITY OF TRACY FACILITY <br /> CLASS U LAND TREATMENT <br /> SAN JOAQUIN COUNTY <br /> WASTES AND THEIR CLASSIFICATION <br /> 5. Since 1991, the Discharger has used this unpermitted facility for storage of untreated <br /> nonhazardous petroleum hydrocarbon-contaminated soils from off-site cleanup <br /> cubic yards (cy) of contaminated soils are presently <br /> operations. Approximately 6000 <br /> ro ect. <br /> stored at the site. These soils originated from City of Tracy construction projects, In <br /> particular projects SOW° the Schulte Road extension atthe <br /> the site. The Discharger <br /> Other wastes, including concreteed <br /> ditional soils oebris, have r wastes at the facility, but only to treat <br /> does not propose to place any <br /> and store, for use or disposal, the soils that are already there. <br /> rox. lately 5,000 cy are contaminated <br /> a <br /> 6. Of the soils presently stored at the facility, pn�y <br /> with heavy petroleum fractions consisting p of Bunker oil. These soils were <br /> Beck development project and stored with <br /> e <br /> removed in 1991 from the Schulte Road/ facility are contaminated <br /> subject facility. Other soils presently stored at the inated with gasoline <br /> and oil. <br /> 7. The Schulte Road soils originally comprised approximately 12,000 cy. Approximately <br /> 6,000 cy of those soils were re-usedui construction projects, specifically as road base. <br /> This was allowed by agreement with the Regional tBoard, as stated <br /> encapsulation letter the dated <br /> 17 May 1991, on the condition that the re-use Projects <br /> contaminated soils, and based on chemical analyses <br /> less, with no volatile com showing that the soils twine. <br /> hydrocarbon contamination levels of f100 mg/kg <br /> 8. The 900 mg/kg value was suggested by the consultant to the Discharger based on a <br /> December 1990 determination by the California Department of Health Services (now <br /> Department of Toxic Substances Control) for a nearby project site with similar <br /> hydrogeologic conditions and similar contaminants. The level was agreed upon by <br /> Regional Board staff for the Schulte Road soils only. <br /> 9. The Discharger has proposed bioremediation to treat the remaining soils, and then to <br /> reuse them in specified City construction projects, subject to approval from the Regional <br /> Board. <br /> 10. All of the stored soils contain petroleum fractions, which could pose a threat to water <br /> quality if discharged in an uncontrolled manner, and therefore the soils are classified as <br /> designated wastes using the criteria set forth in Title 23, California Code of Regulations, <br /> Division 3, Chapter 15 (hereafter Chapter 15). The treated soils also may be classified <br />