Specifications include, but are not limited to: 4.1 The Wash rack OWS/Sediment Pit Inspection Procedures will include the following and must be documented in the ensuing report (Section 7 ‘Deliverables’): • Visual examination of the area served by the OWS for evidence of spills and leaks. • Inspection of the point of discharge (i.e., sewer manhole) for evidence of petroleum bypassing the OWS. • Inspect drains for any signs of unauthorized substances entering the OWS. • Examine the OWS for signs of leaks or any malfunction. • Examine operation of oil level sensor • Examine purge valves for proper operation. • Test alarms for containment tank and OWS and evaluate electronic control panel for proper functionality. • Test controls and alarm system including valve operation. • If a lift station exists and pumps water to the OWS, the floats, limits and controls must be tested for proper operation. 4.2 The OWS Testing and Characterization Procedures: The contractor will test the waste oil with Toxicity Characteristic Leeching procedure (TCLP) for the eight (8) Heavy Metals. The Contractor will make the determination what the proper number and locations of samples taken are in accordance with all regulatory requirements. If the concentrations are at or above the following listed concentrations, the waste oil shall be treated as Hazardous Waste (HW): Lead 5.0 mg/L Barium 100.0 mg/L Cadmium 1.0 mg/L Chromium 5.0 mg/L Arsenic 5.0 mg/L Mercury 0.2 mg/L Selenium 1.0 mg/L Silver 5.0 mg/L