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site and must be own to the EHD inspector upon requ-. (- In addition, the applicable fire <br /> department shall approve the UST installation prior to commencement of work. <br /> All appointments for inspections must be made at least 48 hours in advance. Below are <br /> the minimum required inspections: <br /> a. Before installation, the tank shall be tested for tightness at the installation site in <br /> accordance with the manufacturer's written guidelines. If there are no guidelines, the <br /> primary and secondary containment shall be tested for tightness with air pressure between <br /> 3 and 5 pounds per square inch. In lieu of a pressure test, a vacuum expressed in inches <br /> of mercury in the interstitial space of the secondary containment, is acceptable. The <br /> pressure (or vacuum in the interstitial space) shall be maintained for a minimum of 30 <br /> minutes. <br /> b. All new primary piping and secondary containment systems shall be tested for tightness <br /> after installation in accordance with manufacturer's guidelines. Primary pressurized piping <br /> shall be hydrostatically tested at 150 percent of design operating pressure or pneumatically <br /> at 110 percent of design operating pressure. If the calculated test pressure for pressurized <br /> piping is less than 40 psi, 40 psi shall be used as the test pressure. The pressure shall be <br /> maintained for a minimum of 30 minutes and all joints shall be soap tested. If there are no <br /> manufacturer's guidelines, secondary containment systems shall be tested using an <br /> applicable method specified in an industry code or engineering standard. <br /> C. All lines other than pressure piping shall be pressure tested at not less than 3 p.s.i. and not <br /> more than 5 p.s.i. for a minimum of 30 minutes and soap tested while under pressure. <br /> d. Containment sumps shall pass a 24 hour hydrostatic leak test. <br /> e. The spill container shall be shown to be capable of draining liquid back into the fuel tanks. <br /> f. The monitoring system shall pass a functional test. The functional test shall consist of the <br /> activation of the alarm via all monitoring probes/sensors. <br /> g. Final inspection and approval to operate will be granted after the above requirements are <br /> satisfied and a hard copy of the tank integrity test [as required by Section 2635 (a) (5)] is <br /> submitted to the inspector at the site. <br /> If you need further assistance, or wish to schedule an appointment to discuss the plan <br /> review or field inspection, please contact our Underground Storage Tank Staff at (209) <br /> 468-3427. <br /> EH23 008 (REVISED 7/23/02) <br /> 3 <br />