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Brown Sand,Inc. <br /> Spill Prevention, Control, and Countermeasures Plan Page: 15 <br /> June 3, 2020 <br /> 3.5 Potential Discharge Volumes and Direction of Flow (40 CFR 112.7(b)) <br /> Tank loading/unloading procedures are closely followed as outlined in Section 3.11.1 in <br /> order to prevent an overfill spill from occurring, and the Discharge Response Plan, located <br /> in Section 4.0, outlines the facility's spill response procedures. The reasonably expected <br /> modes of major failure or accidental release in which product could be spilled from the <br /> facility are as follows: <br /> 3.5.1 Waste Oil and Bulk Oil Area (Map Location #1) <br /> This area contains one (1) 1,000-gallon single walled aboveground storage tank <br /> containing waste oil, one (1) 500-gallon single walled aboveground storage tank <br /> containing motor oil, one (1) 350-gallon single walled aboveground storage tank <br /> containing transmission oil, and one (1) 350-gallon single walled aboveground <br /> storage tank containing hydraulic oil. All these tanks are located within a vaulted <br /> concrete secondary containment structure. The following table summarizes the <br /> possible modes of failure,maximum quantities,rates of flow, and direction of flow <br /> for a spill in this area. Facility spill response procedures are closely followed as <br /> outlined in the Spill/Discharge Response Plan, Section 4.0. <br /> Mode of Failure Maximum Rate of Flow Direction of Flow <br /> Quantity <br /> 1,000 gallons Contained within vaulted concrete <br /> Failure instantaneous Storage Tank Leak or Based on the largest Gradualto secondary containment capable of <br /> tank size s containing 5,365 gallons. <br /> Not greater than 10 A spill resulting from a tank <br /> GPM,based on pump overfilling would be contained <br /> Tank Overflow < 10 gallons rate and response Within secondary vaulted concrete <br /> time of 1 minute containment structure capable of <br /> containing 5,365 gallons. <br /> Not greater than 10 A spill resulting from the tank <br /> connections would be contained <br /> Tank Loading and < 10 gallons GPM,based pump within secondary vaulted concrete <br /> Unloading rate and response containment structure capable of <br /> time of 1 minute containing 5,365 gallons. <br />