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Hazardous waste will be any material listed as hazardous or which possesses one of the <br />• four chazacteristics of a hazazdous waste (ignitability, corrosivity, reactivity or toxicity). <br />Solid waste suspected of containing asbestos will be quazantined and left in place until <br />adequate chazacterization and disposal options can be determined. <br />4.1 Analytical Procedures. <br />Constituents of concern in the gravel mining azea include a variety of hydrocarbon <br />compounds (e.g. BTEX and other volatile organic compounds}, semi-volatile organic <br />compounds, MTBE and RCRA metals. <br />All samples will be collected and handled (properly labeled, packaged and submitted for <br />laboratory analysis in accordance with MEI's QA Plan. Samples will be analyzed, as <br />necessary, for TPH by US Environmental Protection Agency ("EPA") Method 8015M; <br />for BTEX by EPA Method 8021B; for SVOC's by EPA Method 8270; for PAH's by <br />EPA Method 8310, and for RCRA metals by EPA Method 6010B/7000 series. <br />4.2 Soil and Groundwater Sampling. <br />In the event contamination is encountered or suspected in soils, MEI will evaluate such <br />media for potential environmental impact (using visuaUolfactory observations, PID <br />screening etc.). If necessary a grab sample will be submitted for laboratory analysis in <br />• accordance with the QA Plan and analytical procedures described in Section 4.1. <br />Previous investigations in the gravel lease area revealed the presence of low levels of <br />benzene in several monitoring wells and free product in MW-2 and WP-3 just north of <br />the area. Fluid levels will be routinely monitored in select groundwater monitoring wells <br />as detailed in Section 3.2. As the discharge of pumped groundwater and effluent <br />monitoring will be regulated under the Discharge Permit, no additional groundwater <br />sampling is anticipated under this WMCP. However, in the event groundwater sampling <br />and analysis of any of the monitoring wells is deemed necessary, it will be conducted in <br />accordance with the procedures stated in the QA Plan. <br />Field sampling equipment will be decontaminated prior to use at each location by <br />washing with anon-phosphate cleaner and double rinsing with distilled water. <br />Decontamination liquids and disposable field equipment (e.g, gloves, paper towels) will <br />be containerized and managed according to the Division's regulations. <br />4.3 Discharge Water Sampling. <br />A CDPS Minor Industrial Discharge Permit has been obtained for the pit dewatering and <br />wastewater discharge associated with the sand and gravel mining operation. A copy of the <br />discharge permit is attached as Appendix D. Water pumped at the mine site will be routed <br />into an oxidation/aeration basin to be constructed initially in the eastern portion of <br />Evaporation Pond No. 9. It is anticipated that the water pumping and sunlight exposure <br />• will be sufficient to reduce groundwater hydrocarbon levels below the trigger levels <br />contained in the Discharge Permit. All discharge activities will be performed in <br />to <br />