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• Equivalent overflow protection in lieu of the specific devices listed in 40 CFR 112.8(c)(8). In some cases,the <br /> filling of ASTs with new oil products will be observed by trained facility representatives/suppliers using direct <br /> vision gauges installed on the tanks or observation of the liquid per 40 CFR 112.8(c)(8)(iv). <br /> For certain shop-built containers that pose minimal risk of corrosion failure,which are inspected at least monthly,and <br /> for which all sides are visible(i.e.,the container has no contact with the ground),visual inspection may be considered <br /> to provide equivalent environmental protection,subject to good engineering practice(67 FR 47120). Visual monthly <br /> inspections will be conducted by trained facility personnel for early signs of deterioration and leakage as an <br /> environmentally equivalent to the requirement for integrity testing. These equivalent methods are discussed in detail in <br /> Section 8.0. <br /> 202204 DTEStockton-SPCC RPT.docx 10-5 <br />