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FIBERGLASS D113%. LE-WALL SUMP INSTALLATION ASTRUCTIONS 2. Press and hold the siphon gun trigger to begin Figure G-1 fluid filling. PEA GRAVEL CRUSHED STONE 3. As the fluid level drops in the bucket, add fluid as needed to keep fluid level above the hose end. 4. When the monitoring fluid reaches the fill line on3/4" 1/2" the reservoir, release the siphon gun trigger. (19 mm) (12 mm) 5. When the vacuum is stopped, the fluid level in the reservoir will drop as the sump walls stabilize. Manually top off reservoir with monitoring fluid to Maximum Stze Maxdmum size the fill line as indicated on the reservoir. 6. Wait until the fluid level in the sump stops a changing (24 hours is recommended)and then top 3/„ off the reservoir.The desired final monitoring fluid a level is 1'/" in depth measured from the inside 1/2 bottom of the reservoir.This level is also indicated on the reservoir label. 1/47. Remove the PVC fill fitting, insert the single point float sensor and re-install the 11/2'permanent reservoir plug. Be sure the reservoir plug has at Pea Gravel: Crushed Stone or Gravel: least aMa"diameter hole in the top of the plug or Clean naturally-rounded Washed,with angular around the wire for venting of the reservoir. Do not aggregate with particle particle sizes no larger caulk or otherwise seal the vent space between sizes no larger than%" than%"with no more the wire and the fitting hole. with no more than 6% than 5%passing a VACUUM MONITORED ANNULAR SPACE passing a#8 sieve. #8 sieve. Dry density must be a Dry density must be a - Vacuum monitoring may be used on the CSI double- minimum of 95 pounds minimum of 95 pounds wall sump utilizing the factory installed fitting. per cubic foot. per cubic foot. - Maximum continuous vacuum level shall not exceed 5 psig (10.2 "Hg). Note: If material which meets these specifications Is not available, contact Tank Technical Support for G. BED & BACKFILL information on approved alternate materials and installation instructions. Using other backfill without The use of approved backfill material is critical Containment Solutions'prior written approval will to long term sump performance. Failure to use void the tank warranty and may result in tank failure. approved backfill may result in sump failure. ALTERNATE BACKFILL • Replace all excavated native soil with approved • If the tank is installed in pea gravel, crushed stone,or backfill of proper size and gradation. Use backfill other porous backfill, a continuous layer of geotextile which meets ASTM C-33 for quality and soundness. fabric must be installed at the tank top prior to backfilling • Require your backfill supplier to certify that the backfill sumps with sand. Refer to INST 6001 for specific meets this specification. requirements on geotextile fabric. • Keep backfill dry and free of ice in freezing conditions. • All sand must be compacted to a minimum 90% • Use only approved pea gravel or crushed stone standard proctor density. Sand should be compacted (see Figure G-1). in maximum 12 inch lifts. Compaction may be accomplished by the use of hand-held compaction equipment, such as mechanical plate vibrators operating at 2,000 to 3,000 vibrations per minute. Prior to placement of at least three feet of cover over the tank, no vehicular traffic or surface loads imposed by vehicle compaction equipment are allowed. a