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• �. <br /> PART B. UST SYSTEMS SUBJECT TO ELD TESTING <br /> UST Systems with a Single-Walled Component <br /> UST systems with a single-walled component have one or more of the following <br /> characteristics: <br /> • single-walled tank, <br /> • single-walled pressurized piping, <br /> • single-walled conventional suction piping, and <br /> • turbines without secondary containment. <br /> Vent or tank riser piping, vapor recovery piping, and "safe" or "European" suction piping <br /> are not considered single-walled components if they meet the applicable criteria in the <br /> regulations [Cal. Code of Regs., Title 23, § 2636, subd. (a)]. <br /> The owner or operator of an UST system with one or more single-walled components <br /> located within 1,000 feet of a public drinking water well, as identified on GeoTracker, is <br /> required to submit and have a program of ELD testing approved by the local permitting <br /> agency within six months from the date of this formal notification. (Health & Saf. Code, § <br /> 25292.4 and Cal. Code of Regs., Title 23, §§2640 and 2644.1.) An approved program <br /> of ELD testing must be implemented no later than 18 months following this formal <br /> notification. Your UST system with single-walled components will be subject to this <br /> requirement every three years thereafter, or until you replace all single-walled piping <br /> and tanks with double-walled components. (id..) Also, please refer to Enclosure 2, <br /> Local Guidance (LG) letter 161-3. <br /> To avoid triennial ELD testing, you may upgrade your UST system so that it does not <br /> have a single-walled component. If you decide to replace your single-walled <br /> components with double-walled components, you must notify your local permitting <br /> agency and follow all required permitting procedures. You must complete the removal of <br /> single walled piping and components by the date that ELD testing is required for your <br /> UST system. You must also file a Request for Reconsideration (RFR) Form with the <br /> State Water Board after the old UST system is removed. Please note that you will have <br /> to conduct an ELD test on a new UST system before it is placed into use [Health & Saf. <br /> Code, § 25290.10)]. <br /> Low-interest loans and grants are available to help qualified owners and operators of <br /> small, independently owned and operated UST facilities remove and replace UST <br /> components. See Enclosure 3 (in orange) and Enclosure 4 (in yellow) for details. <br /> California Environmental Protection Agency <br /> 0%Recycled Paper <br />