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The following is an itemized list of aboveground petroleum storage act violations that have not been addressed for Gemco Ripon Truck Plaza Inc. as of September 29, 2021. Open violations from February 10, 2020 inspection ❑ This violation was corrected ❑This violation will be corrected by(date): ❑ Supporting documents included Describe actions taken or will be taken to correct violation: Violation#614-Failure to provide appropriate secondary containment,diversionary structures or equipment. Appropriate containment and/or diversionary structures or equipment to prevent a discharge for the underground piping is not discussed in the SPCC plan. The appropriate containment and or diversionary structures or equipment to prevent a discharge for the loading area of the tanks is described in a part of the SPCC plan as being an oil water separator. The potential release of the loading are of the tanks was determined to be between 1 to 2,000 gallons. In parts of the SPCC plan the oil water separator is described as having an operating oil storage capacity of 1,500 gallons,this would not be sufficient to contain a 2,000 gallon release. The SPCC plan also states that a release from the pipe in the loading area would be directed into a drain which is connected to an oil water separator. Based on conversations with facility manager and observations of free flowing water near the loading area, a release from the pipe in the loading area may not make it to a drain or the oil water separator. Provide appropriate containment and/or diversionary structures or equipment to prevent a discharge as described in §112.1(b), except as provided in paragraph (k)of this section for qualified oil-filled operational equipment, and except as provided in §112.9(d)(3)for flowlines and intra-facility gathering lines at an oil production facility.The entire containment system, including walls and floor, must be capable of containing oil and must be constructed so that any discharge from a primary containment system, such as a tank,will not escape the containment system before cleanup occurs. In determining the method, design, and capacity for secondary containment, you need only to address the typical failure mode, and the most likely quantity of oil that would be discharged. Secondary containment may be either active or passive in design.At a minimum, you must use one of the following prevention systems or its equivalent: (1)For onshore facilities: (i) Dikes, berms, or retaining walls sufficiently impervious to contain oil; (ii)Curbing or drip pans; (iii)Sumps and collection systems; (iv)Culverting, gutters, or other drainage systems; (v)Weirs, booms, or other barriers; (vi)Spill diversion ponds; (vii) Retention ponds; or (viii)Sorbent materials. (2)For offshore facilities: (i)Curbing or drip pans; or (ii)Sumps and collection systems. Provide appropriate containment and/or diversionary structures or equipment to prevent a discharge except for exemptions found in regulations. In determining the method, design, and capacity for secondary containment,you need only to address the typical failure mode, and the most likely quantity of oil that would be discharged. Secondary containment may be either active or passive in design or impracticability determination made as allowed by CFR 112.7(d).Amendments to this section require certification by a Professional Engineer. Page 5 of 11