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1.3 Purpose and Scope The purpose of the Used Oil Sampling and Analysis Plan (SAP) is to provide guidance and document procedures for conducting a field sampling program which will result in the collection and analysis of representative samples of used oil collected from the 19 BNSF facilities selected for this evaluation. These procedures have been developed to ensure the following: • Samples will be collected in a consistent manner over time and space; • Samples will be identified, preserved, and transported in a manner to generate analytical data that are representative of the actual properties of the used oil; • Required documentation will be generated and maintained; • Data will be used to determine and further refine the understanding of the relative purity and hazardous characteristics of used oil; and • Information derived from this evaluation is intended to support the hazardous waste variance application to be submitted to the California Department of Toxic Substances Control (DTSC)for used oil. 2.0 SAMPLING METHODS TRC anticipates that the following field activities or sampling methods will be utilized during sampling at each of the designated sites. • Samples collected from ASTs will utilize sample ports on top or at the base of the tank, or hose from the transporter's truck tank for used oil generated from locations where wastewater treatment systems have processed the liquid waste stream prior to accumulation. Samples may be collected in pre-cleaned sample containers, large tank coliwasa, or similar sampling device as dictated by the tank size, condition, and access. • Samples collected from drums will be obtained using a clean coliwasa, drum thief, bailer or dipper. The personnel performing sampling activities will have proper contractor safety training, authorization, and photo identification as required by BNSF. Equipment used in sample collection is anticipated to include sample containers, coliwasa, drum thief, bailer, dipper, and cooler with ice. Personal protective equipment (PPE) to be utilized by field personnel during sampling activities will include hard hat, safety glasses, steel toed boots, safety vest, tyvek, and nitrile gloves. 2.1 Used Oil Sampling The collection of samples from a defined population is generally intended to follow a process to obtain a representative sample. Where more than one container of used oil is present, the sample will be collected randomly from a vessel containing used oil generated at the facility. In the event that a ladder is used, the ladder must be securely stabilized and personnel must maintain at least three points of contact with the ladder at all times. Used Oil Sampling and Analysis Plan 2 July 29, 2014 BNSF Railway Multiple Locations TRC Project No. 211983