Stabilization and solidification mixtures of contaminated material with 60% weathered, oily crust, and 40% sediment were made, and acute toxicity (Vibrio fischeri bioassay), hydrocarbons in leachates, and resistance to compression were determined. For stabilized materials, the hydrocarbon concentration expected in base soil (underneath stabilization cells) was calculated from hydrocarbon concentrations in laboratory leachates using a modified test that better simulates real site conditions (acid extraction of complete formed blocks). In the modified tests, an asymptotic behavior in the hydrocarbon concentration in leachates was observed, nearing a maximum after 15 days. The calculated hydrocarbon concentration in base soil was < 3000 mg/Kg in all concentrations of agglomerate and pozzolan used (3.75–15% CaO, 1.25–5.0% diatomaceous earth). Acute toxicity was null or indeterminate with respect to background levels. For solidified materials, in two of the treatments (3.75 and 7.5% CaO, 1.25 and 3.75% diatomaceous earth; plus gravelly backfill at 1:1), unconfined resistance to compression was sufficient for the material to be used as sub-base for rural roads (> 17.6 ton/m²), but with higher concentrations of reagents (15% CaO, 5% diatomaceous earth; plus gravelly backfill at 1:1), the resistance was insufficient. In all solidification treatments, no toxicity above background was encountered, and Total Petroleum Hydrocarbons in leachate tests resulted in calculated hydrocarbon concentrations in base soil of < 3000 mg/Kg. From these data, it was concluded that stabilization and solidification were feasible for this site using low concentrations of reagents, and that it was not necessary to use a plastic liner to prevent subsoil contamination.

制成具有60％风化，油性外壳和40％沉积物的受污染材料的稳定化和固化混合物，并产生急性毒性（费氏弧菌（Vibrio fischeri）生物测定法），浸出液中的碳氢化合物以及抗压缩性。对于稳定的材料，使用改良的测试从实验室渗滤液中的碳氢化合物浓度计算基础土壤（在稳定化单元下方）中预期的碳氢化合物浓度，该测试可以更好地模拟实际工况（对完整成型块的酸萃取）。在改进的测试中，观察到渗滤液中碳氢化合物浓度的渐近行为，在15天后接近最大值。在所有使用的附聚物和火山灰中（3.75–15％CaO，1.25–5.0％硅藻土），计算得出的基础土壤中的碳氢化合物浓度均<3000 mg / Kg。就本底水平而言，急性毒性是无效的或不确定的。对于固化材料，在两种处理中（3.75和7.5％CaO，1.25和3）。75％硅藻土; 加上1：1的砾石回填），无限制的抗压强度足以将其用作乡村道路的底基（> 17.6吨/平方米）²），但使用较高浓度的试剂（15％CaO，5％硅藻土；加上1：1的砾石回填），则阻力不足。在所有固化处理中，均未遇到高于本底的毒性，渗滤液测试中的总石油烃含量计算得出的基础土壤中的烃浓度<3000 mg / Kg。从这些数据得出的结论是，使用低浓度的试剂对该位置进行稳定化和固化是可行的，并且没有必要使用塑料衬里来防止下层土壤的污染。