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resolution capillary gas chromatography/mass spectroscopy (GC/MS) . PNAH compounds were mostly less than the detention Limits for each substance. Four organics were just over their limit for detection (Table 4) . The experimental sample yielded 80.6 milligrams of extractable hydrocarbon per gram of sample. The same four PNAH compounds were detected from the GC/MS analyses of this sample. In each case the concentration was less in the experimental than the control. This suggests that the source of PNAH compounds is from the asphalt and less from the fuel oil. All other volatile and semi--volatile orga>>ic compounds were below their respective detection limits (Table 4) . Heavy Metals Analyses The pavement samples were analyzed for both total and soluble heavy metals content pursuant to California hazardous waste regulations. Unlike the RCRA EP Toxicity criteria, the California Code of Regulations (CCR) , establishes limitations based upon both total content (i.e. , Total Threshold Limit Concentration; TTLC) and the extractable or soluble content (Soluble Threshold Limit Concentration; STLC . As one would expect, the established TTLC is always higher than the STLC. A waste is considered hazardous if the total concentration is equal to or greater than the TTLC, and non--hazardous if the total concentration is less than the STLC. However, if the total concentration for a given parameter is less than the TTLC but higher than or equal to the STLC, the sample is analyzed further - using the California Waste Extraction Test (WET) . If the concentration in the WET extract exceeds the STLC, the substance is deemed hazardous.4 The subject samples were digested and analyzed for total metals content by EPA Methods 3050 and 3010 as specified in CCR, Title 22, Section 66700 (b) . In both cases the heavy metals content was less than the TTLC and the STLC. 'Therefore, the WET was not performed. The sample results and the regulated concentration limits are summarized Table 5. These results indicate that the pavement samples would not be considered hazardous due to heavy metals content. Aquatic Bioassay Static aquatic bioassay tests were performed on both the experimental and control samples. The samples were milled to pass through a number 10 sieve and suspended in the test solution in accordance with procedures prescribed in Slandard.1fethods for the Examination tVater and iVastewater. Test mixtures containing 250 milligrams per liter (mg/1) and 750 mg/l of each sample were prepared fron tap--water-and__introduced-into--l0-liter-tanks.- Ten-fathead - --- minnows, Pimephales promelas, were placed into each tank approximately 20 minutes after the samples were introduced.