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�ff�li��lSU�{�vU�6s)1 ��'Uul�W OCTOBER 2016 ;:e:t't,`.—J3'd©rntlrtBELLSUy211tt`1r•LWd�i'4p14(rxLSiOEi Slap 2 Is used If the Step 1 analysis shown that buoyancy control Is required for the tank model and Installation conditions.The alto-specific maximum. Quo``ancy Cont fUP Guidance U//q/) 'N F8 LTRATO P.. height of water outside of the tank and above the tank bottom and the depth of soil cover above the tank top must be known to complete Step 2. 9 UUU((UU tanks Table 2Instructions For the appropriate lank r.ad.],select the desired buoyancy control method under each method description column.Refer to the Compatible Devices and Desoto you Begin Table 1: Products and Step 3-Implementation sections of this document foradditlonal information on the buoyancy central methods shown In Table 2. This s for tator Water a method for assessing buoyancy control Infiltrator Tank Models'and Conditions Requiring Buoyancy Control needs for Infiltrator Wntor 7ochnologles pn}Iltntort IM-Serlas tanks. - Tank buoyancy control measures must be implemented according to Per ameler Il: Table 2:Buoyancy Control Method Selection state end/or local regulations,which may supersede these guidelines. Soil cover depth shoe.rank top' If unsure of the requirement.for a particular site,contact the local P.rameter I: health department or permitting authority. Wale,helghe above tank bollam A 8 Mlnlmum Busy..y Control Method° 0In(160 mail to Above 12 In Paramolar ll: svpplemenlel C.nceie Concato If tank buoyancy control measures are Implemented,refer to Infiltrator 12 In 3(00 mm Tenk Par—to'k dmrmv°rd -filled HMmeI ( ) (300 mm) 3slfco..r depth above perklag Crank e—Z' IM-Series Tank Installation Instructions and Riser Connection Model lyabr height above lank bollam force required' heepip. anon.,. Above outlet pfpe seddw tank lop (total,beth tenx (ndn len9ah/ bump... osrdo fnalr. !min.Mdlh x min. Guldelice documents,as nppilceble,for completing the lnstellellon. 1 (greater than 43•(1,076 mmJ) Do mli^atn11 no rot instal eidee) .Ida) (min.length/ lmin.Ianplh/ ne/sbeJ height) 39'(900 mm)to 43"(1,076 mm) aide) aide) I Using StoUsep 1,TableIandhis 2 (lo outlet pipe saddle) afmadeN Net Required elnry5omm) 1.Using Step l,Tab!et and Flguresland 2,verify that the water level DA-640 391n(90amm)loautkl plpe.eedle' 6N(I50 mm)m 12 h(300 h.^) 2,200 ere p,0001� 9.a Rp2 m) 3,aap2a4 3(.6 Rll.z aro 2 x9h(22fi nm,) outside the tank Is below the outlet pipe saddle height and determine If 3 30"(750 mm)to 36•(900 mm) IM-1630 Not buoyancy central is required. Required IM-1060 981n(900 mm bowel 12M(900^rap 2.Use the appropriate row In Slap 2,Table 2 to determine the minimum ) plpe.sddh' eka(160mm)1u121n(300rof 2,700Ib.p,226W 4.2 Rpa no 4.5Rp.4m) 4.2It p.3 rap 2 z91.(226anrp buoyancy control methods for the site conditions. 4 Lee.than so°(750 mm) Not Required Not Required 121n p00 rain) 3.Once NOTES: the preferred buoyancy control method is selected,follow the PA-1590 30kapW llslpto."pip—ddlo' 8In 050—)tol2N(30amm) 4,3001b.(I,BSSit� a.3n(PArap e.6R Roam) 9.3 It(11)m) 2 Implementatlon procedures provided In Step 3. __ _. ._ x9 In 25 mm) 1.Inllltrator tank modals Include:!h1-540,IM-1060,and IM-1630, NOTES: Step 1—Determine Need for Buoyancy Control 2 Water height corresponds to seasonal high groundwater elevation or perched 1.See Supplemental Fares dlacusslon belmv. Required Information:(1)maximum height of water outside the tank and water elevation measured from bottom-of-tank elevation. 2.IM-Sedan ou0st pip.Sado[.height 1°43 Inch.(1,076 men).11m.tank bottom(sae Fla-1). above the tank bottom;and(2)the depth of sell cover above the tank to 3.Minimum a Inches(150 mm)soil cover back0lf Is required. P 4.IM-Sorles tanks shall not be Installed where tin water level outside the tank Tank buoyancy control may be required If: exceeds the height of the outlet pipe saddle. r the water level outside the tank has the potential to rise 30 Inches(750 Supplemental Force mm)or Moro above the bell=of the tank;and The minlmuan supplemental downward force required Is Included In Table 2 to allow custom buoyancy control methods.These values iricluda a factor •less then 12 Inches(300 mm)of still cover Is to ha placed as backllll over Figure 1:Assessing Water Elevation of safely of 1.5 applied to the calculated force required to restrain the tank.Custom-designed buoyancy control methods shall conservatively cens!dfu the tank top. saturated conditions from the bottom-of-tank elevation to ground surface.As long as buoyancy control Is provided that supplies the minimum weight listed ' Depth of Sea Covergb.v°Trak Top in the table(for pound-concrete blocks or other methods designed by third parties),the tanks are calculated to be stable for the water height outside'' --\tom— the tank end above the tank bottom and corresponding soil cover conditions.Ali Infiltrator strapping and fastening recommendations apply for custom-' NO BUOYANCY CONTROL IS REQUIRED IF THERE IS AT LEAST e'(150 mm)mM-IB'(1,200 mm)rr�, deslgnedbuoyancy,control Methods.Contact InRitrator's Technical Services Department with any questions regarding supplemental force requirements. 121NCHES(300 MM)OF SOIL COVER ABOVE THE TANK TOP. Top Of Tank 13'(330 mm) .O Allowable Subsurface Water Elevation , Oroundwalorolevatlen,groundwater table,and water table are terms for Seasonal HI Maxi—Alkwoblo Water Elevation the subsurface condition where water is held In the subsurface soli pores Omurakvater 43' OulsMe of Via Tank Cononponds to or rack.The seasonal high groundwater elevation represents the sus1elned (1.075 mm)max Outlet Pipe Seddla Invod so year. k highest point the water table has the potential to reach at any time of the Above Tank year.ThatpointIs not necessarily the level at which groundwater may be an Bottom observed seeping from the sell at the time of tank Installation.In general, e quellfl^d sell evaluator or engineer can estimate the seasonal high groundwater elevation from careful examination of the soil profile. Figure 2:Buoyancy Control Parameters for Table 1 Under certain conditions,a perched water table may be present In the Parameter 0 subsurface.A parched water table occurs where there Is an Impermeable Oepaa creel CowrAbova Top OfT k or low-permeability soil that causes water to be present In the sell pores --- above the mein water table.A perched water table elevation may exceed IIIe ...srmal high olavallon of the mein water table.The vertical position of the 6 tank must account for both the seasonal high groundwater table and any --Y existing or future perched ureter table condition.Verify that the subsurface Pamm ler I water elevation will not exceed the height of the outlet pipe saddle of Water Height the tank,as shown In Figure 1 and described In Table 1. Above len am nn Table 1 Instructions 1.In the left-hand column of Table 1,locate the row corresponding to the height of the water elevation outside the tank and above the tank bottom (Parameter Q for the site conditions.See Figure 2. 2.Follmv that row to the right until reaching the column corresponding to the depth of soil cover proposed above the lank top(Parameter IQ.See Figure 2, 3.If the tank model Is listed In that cell,then buoyancy control Is required (proceed to Step 2).If the tank model in not listed In that cell,then no buoyancy control Is required. 4.IM-Serlei tanks shall not be Installed where the water level outside the tank exceeds the height of the outlet pipe saddle. Contact Infiltrator Water Technologies'Technical Services Depoliment for essislanca at 1-800-221-4436. Contact Infift ter Water Technologies'Technical Services Depari,nent.or assistance at'1-800-22'1-4438.