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Hazardous Waste Tank System Requirements for LQGs and Onsite Treatment Facilities — Page 6 of 14 E. Written Assessments for Tank Systems and Components 1. New Aboveground Tanks Holding Non-RCRA Hazardous Waste or RCRA-Exempt Waste, or Tiered Permit Tank Systems — For the following types of tank systems, a written assessment meeting the requirements of 22 CCR §66265.192(k) must be obtained prior to placing a new tank system or component in service: 122CCR §66265.192(h)(r)I: ➢ Systems containing non-RCRA hazardous wastes generated onsite; 122CCR §66265.192(h)(2)(A)I ➢ Onsite treatment unit tank systems authorized under the following tiers: 122CCR §66265.192(h)(2)(A)I • Conditional Exemption (CE) if the facility is a LQG; • Conditional Authorization (CA); • Permit -by -Rule (PBR). ➢ Systems containing RCRA hazardous wastes generated onsite if 40 CFR §265.1 exempts the owner/operator from the requirements of 40 CFR Part 265. 122CCR §66265.192(h)(2)(R)(2)l An independent, qualified California -registered professional engineer (PE)7 must review the assessment and attest that the tank system has sufficient structural integrity and is acceptable for the transferring, storing and treating of hazardous waste. 122CCR §66265.192(h)(1)l The assessment must include the following information: 122CCR §66265.192(k)f ❑ Hazardous characteristics of the waste(s) that have been or will be handled; 122CCR §66265.192(k)(8)I ❑ Tank configuration (i.e., horizontal or vertical), material of construction, and gross capacity in gallons; 122CCR §66265.192(k)(1)l ❑ All of the following information: 122CCR§66265.192(k)(2)1 ❑ Material of construction; ❑ Material thickness and the method used to determine the thickness; ❑ Description of tank system piping (i.e., material, diameter); ❑ Description of any internal and external pumps; and ❑ Sketch or drawing of tank including dimensions. ❑ Design standard(s), if available, according to which the tank and ancillary equipment were or will be constructed, including design considerations (i.e., calculations) to ensure that: 122CCR §66265.192(k)(2)f ❑ Tank foundations will maintain the load of a full tank; ❑ Tank systems will be anchored to prevent flotation or dislodgment where the tank system is placed in a saturated zone, or is located within a seismic fault zone; ❑ Tank systems will withstand the effects of frost heave. ❑ If the tank was previously used, the age of the tank system if available (otherwise, an estimate of the age); 122CCR §66265.192(k)(3)I ❑ Description and evaluation of any leak detection equipment; 122CCR §66265.192(k)(4)1 ❑ Description and evaluation of any corrosion protection equipment, devices, or materials; 122CCR §66265.192(k)(5)I ❑ Description and evaluation of spill prevention and overfill equipment; 122CCR §66265.192(k)(6)1 ❑ Description and evaluation of secondary containment for the tank system and ancillary equipment demonstrating that it meets the requirements of 22 CCR §§66265.1920)(1) through 0)(3) and §66265.193(f); 122CCR§66265.192(k)(7)I t DTSC's interpretation is that a qualified PE is one whose license allows that individual to engage in the work of assessing whether or not a tank system meets the operating requirements specified in the applicable regulations. Further, §415 of Title 16, CCR requires that a PE practice and perform engineering work only in the field or fields in which he/she is by education and/or experience fully competent and proficient. UN -047 - 6/14 www.unidocs.org 02/01/07