FMCSPILLSITE-Home-RiceUniversityFMC漏油点-家居-莱斯大学

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1、FMCSPILLSITEJuly11,1996:Tankertruckturnedoverspilling6000gallons(23000L)gasoline500ft(150m)NorthfromBearCreekEmergencyResponseTeamobservednostandinggasoline,rapidinfiltrationTheERTwasunabletolocatesubsurfacefreeproductHistoryCLUBB,MISSOURI,USAFMCSPILLSITEOverturnedTanke

2、rTruckFMCSPILLSITE10ft(3m)drysiltysandtoplayer,10ft(3m)wetsandyclaywithgravelunderneathPorosity~0.4Conductivity~85ft/d(26m/d)Aquiferthickness~20ft(6m)Groundwatersurface~7ft(2m)belowgroundsurfaceGradientestimatedtobe0.0174towardsthesoutheastSiteGeologyFMCSPILLSITEFMCSPIL

3、LSITETruckLocationSpillSiteFMCSPILLSITEContractor#1(07/96)Geoprobedsitetoidentifylocationoffreeproduct(07/96)Installed4monitoringwellsSuggestedair-spargingsystem(Statedidnotapprove)Statenoticeddrillerswerenotlicensed,equipmentnotregistered(08/96)Chronologyofevents(1996)

4、FMCSPILLSITEFMCSPILLSITEFMCGeoprobedsite,found6”(15cm)freeproductalongthenorthandsouthsideofhighway(08/96)InstalledaninterceptortrenchsouthofthehighwayRecoveredfreeproductfromtrench(09/96)Chronologyofevents(1996)FMCSPILLSITEInterceptorTrenchConstructionFMCSPILLSITEInter

5、ceptorTrenchConstructionFMCSPILLSITEInterceptorTrenchConstructionFMCSPILLSITEContractor#2(09/96)Geoprobedsitetolocatefreeproductandplume(10/96)Freeproductplumeabout400ft(120m)longand100ft(30m)widePumptestshowedtranmissivitiesranging1100-2000ft2/d(100-186m2/d)Estimatedco

6、nductivitywas85ft/d(26m/d)Interceptortrenchshowed3"(8cm)freeproduct(10/96)Chronologyofevents(1996)FMCSPILLSITEHighlevelsofBTEXmigratedtothestreamFMCSPILLSITEContractor#2(Cont.)Installed5remediationwells,deptharound24ft(7m)insideinterceptortrench(11/96)Manualoperationoff

7、reeproductrecoverysystemstartedinJanuary1997Remediationsystemrunning24h/dhalfwayMarch1997Pumpingrates~18GPM(68L/min),creatingdrawdownsof~15ft(4.5m)Chronologyofevents(96/97)FMCSPILLSITEFMCSPILLSITEFMCSPILLSITEContractor#2(Cont.)Nevergotmorethan100gallons(378L)offreeprodu

8、ctfromrecoverysystem(07/97)Contractorterminatedin07/97Contractor#3(07/97)Unabletocontinuewithexistingsystem,re