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4. REQUIRED INSPECTIONS <br /> Note: The contractor's PHS-EHD approved plans of the UST installation shall be retained at the <br /> job site and must be shown to the PHS-EHD inspector upon request. In addition, the <br /> applicable fire department shall approve the UST installation prior to commencement of <br /> work. _ <br /> All appointments for inspections must be made at least 48 hours in advance. Below are the <br /> minimum required inspections: <br /> a. Before installation, the tank shall be tested for tightness at the installation site in accordance <br /> with the manufacturer's written guidelines. If there are no guidelines, the primary and <br /> secondary containment shall be tested for tightness with air pressure between 3 and 5 pounds <br /> per square inch. In lieu of a pressure test, a vacuum expressed in inches of mercury in the <br /> interstitial space of the secondary containment, is acceptable. The pressure (or vacuum in <br /> the interstitial space) shall be maintained for a minimum of 30 minutes. <br /> b. All new primary piping and secondary containment systems shall be tested for tightness after <br /> installation in accordance with manufacturer's guidelines. Primary-pressurized piping*shall <br /> be hydrostatically tested at 150 percent of design operating pressure or pneumatically at 110 <br /> percent of design operating pressure. If the calculated test pressure for pressurized piping is <br /> less than 40 psi, 40 psi shall be used as the test pressure. The pressure shall be maintained <br /> 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 applicable <br /> 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 review <br /> or field inspection, please contact our Underground Storage Tank.Staff at (209)=468-3427. <br /> 3 <br />