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Mir mune Gallons of Monitoring HUM Required 92. Replace all excavated native soil with approved backfill of Tanksump ------------ ----------- proper shed and gradation.Use backfill which meets Total Height 42' m' 54' ASTM C-33 for quality and soundness. Tank Sump Tank Sump Tank Sump 4 ] 18 10 93. Require your backfill supplier to certify that the backfill meets this specification. 5' a 1. 11 9.4. Keep backfill dry and free of Ice In freezing conditions. 0 9 11 13 95. For alternative backfill for tank sumps,other than what is 1 r 10y _12_- _ _ is _ specified in Figure 41,refer to INST 61060. &42. Press and hold the siphon gun trigger to begin fluid 9.6. To help insure proper backfill material size,CSI offers an Poling. Approved Backfill Calculator available on our website. 8.4.3. As the fluid level drops in the bucket add fluid as www.containmentsolutions.com,under"Service Training needed to keep fluid level above the hose end. and Support",then"Tank Support Calculations'. 8.4.4. When the monitoring fluid reaches the fill line on the M 1.1111111POB reservoir,release the siphon gun trigger. 10.1. Isolate all tank sumps from direct traffic loading. 8.4.5. Whenvacuum is stopped,thelevel nthe reservoirrvoir will drop as the tank sumpp walls stabilize. 10.2. Aker backfilling to top of Unit sump: Manually top off reservoir with monitoring fluid to the 102.1. Backfill around tank sump top to a level 3•above the fill line as Indicated on the reservoir. horizontal position of the enclosed top.Place a 8.4.6. Wait until the fluid level in the tank sump stops S'x 5'x99'rigid board with hole on backfill to changing(24 hours Is recommended)and then top off support concrete and provide a channel for water the reservoir.The desired final monitoring fluid level is runoff(see Figure 10-1). 1 K'in depth measured from the inside bottom of the reservoir.This level is also indicated on the reservoir Figure 10-1 label. - PelnrorRd 8.4.1. Remove s.,and PVC tillth I' ' ert the rmane treser resnt ervoir glut Mannose Tank sump coomere sensor and reinstall the t A'permanent reservoir dug. udEI 1 omc 5enm Be sure the reservoir plug has at least diameter hole the top the plug or around thee wire for venting of the reseservoir.Do not caulk oefini al se -- -- the vent space between the wire and the fining hole. ole. ' � 3•mM. Rigid Boats (s'x5'x KT 9.1. The use of approved backfill material is critical to long term tank sump performance.Failure to use approved backfill may result in tank sump failure and will void the limited warranty(see Figure 9-1). Hgure3l PEA GRAVEL CRUSHED STONE �L�L Vz P9 mm) D9mm Maximum Sim MaximurnSlze 1021.1. Use a grade access manhole large enough to allow 1 o tank sump lid removal after installation. 102.2. Adequate clearances must be maintained between the 3/411 tank sump lid and manhole lid to prevent the direct transfer oftraffic load to the tank sump. 1h 1023. Pour slab directly onto rigid board. 1/4° 102A. If the tank sump is located in a traffic area,the concrete traffic pad,reinforcement and thickness must be designed for job conditions and traffic loads to assure Pea Grrel: Cr11MM5tone or Grand: concrete traffic pad integrity.It is the responsibility awn natunt"rourdM Washed,vAth ngular of the tank owner or tank owners representative to ...regal wKh P.okleslaea OSAdesizez no larger design the traffic pad for all loads. noln9erthan Wwkh no more Man W'::=o-hUm 5% Man S%p.srllgaYasiew. Wading.Y4 sive. Drydensnymustbea on,denutymustbea minimum of95 Pounds minimum of S, Pounds permbicfoot. percudcfaol. a