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<br />FOR DETAIL OF TANK SLAB
<br />SEE SHEET 'POB'
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<br />ANGLE OF SOIL
<br />REPOSE ON ALL
<br />SIDES 1 1 W/ DEPlli
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<br />1 3 EXCAVATION AND BACKFILL
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<br />A EXCAVA110N If unexpected water condition or rock (s encountered, Immediately contact the
<br />Owner for Instructions before proceeding with the excavation
<br />B TANK HOLE SIZE IN STABLE SOIL Size excavalJon perimeter to allow 24" minimum between ~oJnks
<br />and 24" minimum between tank sides and end cops and the wall of the tank hole
<br />C TANK HOLE SIZE IN UNSTABLE SOIL
<br />1 Unstable soli Is defined as havIng less than 750 Ibs /sq ft cohesIon, as calculated frClrn an
<br />unconfined compression test, or soils wilh on ultImate bearIng copaclty of less than 3,500
<br />Ibs /sq ft Loose sand, muck, bog, peat, swamp or landfill where SOil IS soft are generally
<br />conSidered unstable SOils
<br />2 S,ze excavation perimeter to allow 24" minimum between tanks and a minimum of quarter the tonk
<br />diameter between the tonk Sides/end caps and the wall of lhe tonk hole
<br />3 Filter fabriC 1'1111 be used to line the STP sump where pea gravel IS utilized
<br />4 Permanent shOring may be used to stabilize the walls of the tank hole, at the discretion of the
<br />Contractor If permanent shOring IS used, fol/ow Stobie SOil" size crItena
<br />Refer to "Alternate Backfill Materials., below
<br />D DEPlli OF TANK HOLE
<br />1 Contractor IS responSible for esloblishlng the lonk hole depth, consldenng the lenglh of piping
<br />runs, to the pump blocks and vent risers, pipe burial depth, yard slope and the following crIteria
<br />(Measure ot the Remove Pump opening)
<br />a Tho mInimum depth of cover Is 3'-0" and the maxImum Is 7'-0"
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<br />E SAFETY REQUIREMENT
<br />No person sholl enler a lank hole excavation below the 5 ft deep level unless the walls ore shored
<br />or Side sloped os prescribed by currenl OSHA regulallons abd the Trench Safety Act of 1986
<br />No exceplions Stale or locol requirements thot ore more reslncllve than Company speclflcallons ore to
<br />be adhered to os though speclf1ced In Company specifications The Contractor Is responslbte for any
<br />design, materfols, equIpment, permits, ete, for shoring or side sloplng a hole
<br />F flLL AND BACKFlLL
<br />All fil/ ma terral shall be of setect sand granular nature, free from vegetatIon and extraneous materIal
<br />Spread matenal 10 lifts not to exceed 12 Inches and tamp thoroughly Contractor shall prOVide a
<br />compactlon test for certlflcatlon of fill at the Owner's expense Compaction sholl be at least 90% of
<br />the Modified Proctor density
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<br />1 4 BALLAST
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<br />A MATERIALS
<br />Clean water Is to be used os 0 ballasl under all condltlons where ballast Is requIred
<br />B DRY HOLE CONDITION
<br />Tonks With backfill to top of tanks, must be ballasted If there Is any chance that surfare or
<br />subsu~face water Will enter the tank hole lo a depth of 36" or greater above the bottom of the
<br />lanks
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<br />C
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<br />\VET HOLE CONDITION ,
<br />Attempt to pump woler from lhe tank hole to malnloln a "Dry Hate Condlbon If unable to oblatn
<br />a "Dry Hole Condlllon", Owner IS to be notified and Will delermlOe the course of action to be
<br />followed Install filter fabriC, be-down "logs" and bedding os speclfTed elsewhere Set tonk In hole.
<br />partially fill wllh water untn It sInks firmly on the bed Use only enough woler to bal/ast tank until
<br />backfill Is to top of tonk After backfill to top of tank, fill tonk With water until completion of
<br />Installatlon
<br />CAUTION - BALLAST LEVEL MUST NEVER EXCEED WATER OR BACKfiLL LEVEL IN mE HOLE
<br />DURING INSTALLATION Do not remove ballasl until tank slab has been poured Do not set remole
<br />pump motor until ballast water hog been removed from tonk
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<br />DOUBLE WALL GLASTEEL / FRP TANK INSTALLATION
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<br />MATERIALS
<br />1 Double-wall Glosteel, fiberglass reIn forced plastte (FRP) coated steel storage tanks as supplied by
<br />Manufacturer are to be Installed by Contrector In eccordance WIth the plans and speCifications
<br />as supplled by manufacturer
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<br />1 5
<br />A
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<br />Double Wall (Modern / Permo Tonk)
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<br />2 Other Contractor supplied equipment Included vapor recovery (when speCIfied) Phase I
<br />Assemblies Adopters, dust cops and nameplate holders Phose II EqUipment Anti-ReCirculation
<br />valve, high hose retractor, nozzle SWivels, flow limiter, anb-klnk spnngs, SWivel stops, clamps,
<br />extension
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<br />BULKHEAD
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<br />SEE DET A
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<br />SEE DET 8
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<br />42' 6"
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<br />TANK SPECIFICATIONS
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<br />HANDLING OF TANKS
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<br />RESPONSIBILITY The Contractor Is responSible for olf-loodlng the tonks from the dell'..ery vehicle
<br />A crane or backhoe of sufficient lifting capacity must be used
<br />
<br />LIFTING & MO\l1NG 'M1en lifting or mov1Og a tank, always use properly Sized equipment ond
<br />lift by lifting lug(s) On large tanks, greater lhan S' diameter, use 0 spreader ba,r to ensure a lift angle
<br />of at least 4-5 at each liftIng lug Never roll or usa cables or chains around a tank Set on
<br />smooth ground, free of rocks and foreIgn objects
<br />EXCEPTION - Tank can be rolled up to 90 on a smooth clean surroce
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<br />CHOCKING Tonks are to be chocked In accordance wIth manufacturer's recommendation until
<br />ready for Installation If Windy conditions eXist or oro expected, anchor tanks uSing rl1lnlmUm 1/2u
<br />nylon or hemp rope over each tonk and secura to stakes af adequate slza to prevent movement of
<br />the tanks
<br />OPENINGS All tanks ore shipped With dusl covers or steel plugs In each opening Dust covers ore to
<br />remain In each opening unlil ready for the pre-Installation pressure test All tanks must have either a
<br />dust cop or steel plugs In place or a 5 pSI pressure relief valve In place at 011 ttmes
<br />DAMAGE
<br />1 Inspect all tonks carefully for signs of domage upon receipt Note any damage on the shipping
<br />documents and notify the Owner Can tact the tank manufacturer for addlt!onal
<br />In formolion
<br />2 If the tank la damaged at any other time, do not ottempt repairs Notify the Owner who will
<br />become aware of lhe course of aellan
<br />SETTING Set tanks on prepared bed with a slope downward toward the fill end oif the tank A slope
<br />of 2 difference between the two extreme openings of the tonk IS deSired The acceptable range of
<br />slope IS 4 maxImum and 1 W minimum, WIth the fill end lower lhan remote pump end of lhe tonk
<br />Tonks that exceed the acceplable slope or that slope downward to the remote pump end are
<br />Improperly set and will be reset
<br />INST ALLA nON WITH APPROVED MATERIALS
<br />1 Place 0 12" lift of backfill evenly around the tanks Push backfill completely underliealh and oround
<br />lhe tonk Procedure con be done from bonk or adJocenl tonk top
<br />If 0 man will be In the hole to "work" the backfill, hole must be shored or s Ide sloped os
<br />prescribed by currenl OSHA regulotlons
<br />2 Place second 12u Ii ft or backfill evenly around the lanks Again repeat lhe "v:/orklng" or backfill
<br />around and under the tanks Add backfill evenly around the tanks up lo th~ tops
<br />of the tanks
<br />3 Backfill to subgrade after PlPtn9 and tesbng IS completed
<br />INSTALLATION WIn; ALTERNATE MATERIALS All alternale materials must receIve wrItten approval from
<br />the tonk manu facturer
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<br />TANK TESTING
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<br />PRE-INSTALLA110N TEST SET UP Prior to the pr~-tnStallalton test, 011 shlppln9 pads musl be
<br />removed from the tank and the vacuum on the annular space must be releasedl
<br />A vacuum on the annuler space 19 substitute for the pre-lnstallot!on test All Installatlon tests
<br />must be performed and recorded on acceptable forms
<br />NOTIFICA nON
<br />The Owner, MUST observe all tests Notify at leost 24 hours In advance of any tests
<br />PRESSURE APPUCA TION SYSTEM
<br />The pressure applicalton syslem IS lo hove two pressure gouges (range 0 ta 10 pSI WIth 5 pSI
<br />pressure reliefs) In the system. both In good condltlon and haVing been tested <lnd calibrated within
<br />a three-monlh period prior to lhe tonk test (copy of the test and calibralton data to be furnished to
<br />the Owner upon request)
<br />USE EXTREME CARE AROUND AND NEAR THE PRESSURIZED TANK Relieve lhe pressure prior to
<br />movIng lhe tank or removing any fittings
<br />Never pressurize the secondary (outer) tonk without pressurizIng the prImary (Inner) lank ffrst
<br />LEAKING TANKS
<br />DO NOT Install 0 tonk which shows any evldence of a leak The Owner Is to be notified of any
<br />damage and will become aware of the course of action to be followed
<br />SCOPE OF WORK
<br />The Contractor IS responSible for all lobor material and equipment necessary tOI conduct the
<br />following tesls
<br />Pre-Installallon Pressure Test, AIr
<br />After-Instol/atton Pressure Test, Air or Hydrostatic
<br />
<br />PRE-INSTALLA TION PRESSURE TEST, AIR Extreme core Is to be used around and near the
<br />preSSUrIZed tonk Never pressunze the secondary (outer) tank Without pressurIZing lhe primary
<br />(tnner) tank
<br />1 Pnmary (Inner) Tonk Tesl
<br />TIghten 011 tonk fittIngs Locate a pressure gauge In the vent/monllor fitting tn the secondary
<br />(outer) tank Locale a second pressure gage at a fItting In tho manway and COMecl lhe air
<br />pressure hose to thiS same fit ling PressurIZe the primary (Inner) tonk to 0 minimum 4 psi.
<br />maximum 5 pSI Monitor the pressure gages 0 minimum of 1/2 hour There should be no pressure
<br />Increase [n the secondary (outer) tank Soap 011 tonk fittings
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<br />PUMP INTAKE
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<br />G POST..INSTALLAllON PRESSU"E TEST AIR
<br />1 Primary (Inn or) Tonk Test Perform lhls test wilh all tank rIsers and f1tt1ngs attached TIghten all
<br />tank fittings Locota a pressure gauge In one of the annular space monitor fitllngs In the
<br />secondary (outer) lank Locate a second pressure gauge with 0 5 psi pressure rehef, to ona of
<br />the pnrnary ~Inncr) lank llllln<;s and connect the air pressure hose to lhls some fitting Pressurrze
<br />the prlll1ary \Inner) tonk to 0 mlntrDUm of 4 pSI (maXlIl1Um 5 pSI) Soap 011 tonk fittings and
<br />mOl1ltor the pressure gauge for 0 minimum of 1/2 hour There should be no pressure IOcreasa In
<br />lhe secondary (outer) tank
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<br />H POST-INSTALLATION PRESSURE lEST, HYDROSTATIC No tank that shows any eVidence of a teak
<br />IS to be kept IC'\ lhe syslem Any damage Incurred to lhe tonk dunng the installation Will be contractor's
<br />responsibility The Owner Is to be notified of any damage and Will be made aware of the
<br />course of actton to be followed
<br />If a hydrostatic lasl Is requlrod by a local agency, lhe contractor 19 to Isolote the tank for testrng and
<br />reconnect when tesltn\l IS complete
<br />BALLASTING Only the primary (Inner) tonk shalt be used when ballastrng the tonk Never fill the
<br />secondary (outer) lank WIth a nUld If the tanks ore ballasted, conduct HydrostatIc Test (Instead of
<br />the post-Installation air test) on the tonk and fittings
<br />J BURIAL DEPTH The bunol deplh from the top of the tank to ground level shall be 0 minimum of ;3
<br />feet and a maximum of 7 feol The fittings, If a man way f9 used, will be approximately 5 to 6 Inches
<br />off lhe top of lhe tank ThiS shall be conSidered for lhe slope of the piping and thus may affect the
<br />tonk bUrial depth
<br />K VENTING Vent the primary tank only 03 reqUIred by tank manufacturer
<br />L INTERSnTIAL MONITOR Install mOnltonng gouge Within nser prOVIded by tank manufacturer
<br />
<br />M INSTALLING THE CONTAINMENT SUMP The contaInment sump must be waterllght to prevent
<br />liqUid tngress or egress Fiberglass InSide and outSide of tank collar
<br />N INSTALLING THE SPILL CONTAINMENT FILLBOX The spill containment fillbox must be liqUid tight
<br />Test 01/ flllboxes by filling wllh water for a mlnlmum of one hour There should be no drop In the
<br />water level dUring thiS test Do not drain waler Into the tank
<br />
<br />1 8 APPROVED MATERIALS
<br />
<br />A APPROVED 8ACKFILL MATERIALS
<br />1 CLEAN SAND Select coarso granular material, ctean and fee of any deleterious matter or debns
<br />
<br />2 PEA GRAVEL A clean, naturally rounded aggregate With 0 1/B- mintmum and a 3/4" maximum
<br />dlometer Up to 5% of tho particles may p<J53 through a HB sIeve
<br />J STONE OR CRAVEL CRUSHINGS Washed matenal With a particle size between 1/B and 1/2" Up
<br />to 5% of the particles may pass throu9h a #8 sIeve
<br />NOTE Approved materials must be dry, free of Ice ond snow, and meet ASTM C-33, Paragraph 71
<br />for quality and soundness The dry gavel density must be 0 minimum of 95 pounds per cubIc foot
<br />
<br />NOTE Bedding materIal, lle-down "logs" and sample wells ara to be placed on the top af the fUter fabnc
<br />Excess fobnc at top of the hole should be folded over the backfill matenal at subgrade level
<br />B RECOMMlNDED FILTER FABRIC MATERIAL
<br />Reemay loc - Twor 3401 or Twar 3341
<br />Phillips Fibers Corp - .Supac 4Np" fabric
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<br />REVISIONS BY
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