Laserfiche WebLink
5 . Setting and Backfilling: 1) watch tanks lowered into hole; <br /> 2) observe 1/8" per foot slope of tank (use level or ask <br /> contractor) ; 3) check to see that pea gravel is correct <br /> size. (Note: Pea gravel should be tamped below and up sides <br /> of tank, and sand should be mechanically compacted around <br /> tanks. ) <br /> 6. Primary Piping Test: <br /> Unless otherwise specified by manufacturer, minimum pressure <br /> should be 40 psi for 30 minutes. 1) check gage for accuracy <br /> as in No. 3c above; 2) observe contractor soap all piping <br /> joints. Bubbling or hissing indicates a problem; <br /> 3) contractor must fix any problem and have a passing <br /> retest. (Note: all vent and vapor lines must hold 3-5 psi <br /> for 30 minutes) <br /> 7 . Secondary Piping Test: <br /> A. Pressure/Soap Test: minimum 3 psi for 30 minutes. <br /> (Procedure same as No. 6 above) CCR 2635 (a) 4 . <br /> B. Trenchliner Test: Contractor must fill trenchliner with <br /> water covering all seams. A visible line must be marked <br /> on trench at water level. After 24 hours observe this <br /> line and note any change in water level which would <br /> indicate a problem. <br /> 8 . Lake Test: 1) all sumps (including overfill protection) <br /> must be filled with water above any seams and/or seals <br /> (including secondary containment entrance seals) ; 2) a line <br /> must be drawn at water level; 3) after 24 hours, inspect <br /> this line and note any drop in water level which would <br /> indicate a problem; 4) inspect exterior surface of sump for <br /> moisture/leakage which would indicate a problem. <br /> 9 . All unused tank openings shall be sealed with fiberglass or <br /> other compatible corrosion proofing material. <br /> 10 . Verify that fuel in overfill protection container will <br /> completely drain to tank when drain valve is operated. <br /> 11. Acceptable corrosion protection includes tape or tar. All <br /> fuel or vapor lines that come into contact with backfill <br /> must be protected (for example: piping within sumps or other <br /> approved secondary containment) . <br /> 12 . Every probe should be activated. Audible and visual alarms <br /> must work. Some probes may be set off in liquid such as <br /> water and others may be inverted. Check manufacturers <br /> specifications. <br /> 13 . Inspect monitoring system panel for correct operation of <br /> audible and visual alarm. Identify the operator and <br /> determine if he or she knows how to operate and check the system. <br /> 2 <br />