DNAPL i moræneler og kalk - DTU Orbit - Danmarks Tekniske ...

Indholdsfortegnelse
Forord ............................................................................................................................ 4
1. Sammenfatning ..................................................................................................... 6
2. Indledning og formål........................................................................................... 11
2.1 Formål ................................................................................................... 11
3. DNAPL screeningsmetoder og kvantitative valideringsmetoder ....................... 12
3.1 Hydrofobe farvetest ............................................................................... 12
3.2 Hydrofobe fleksible membraner............................................................ 13
3.3 FACT NAPL FLUTe liner .................................................................... 14
3.4 MIP ........................................................................................................ 16
3.5 PID måling på jordprøver ...................................................................... 17
3.6 Radon .................................................................................................... 17
3.7 Geofysiske metoder ............................................................................... 18
3.8 Kemisk analyse af intakte kerner og grundvandsprøver ....................... 18
4. Undersøgelsesstrategi og risikohåndtering ......................................................... 24
4.1 Strategi .................................................................................................. 24
4.2 Risikohåndtering ................................................................................... 28
5. Historik ............................................................................................................... 30
5.1 Foreløbig konceptuel model .................................................................. 32
6. Geologi og hydrogeologi .................................................................................... 35
6.1 Hydrogeologisk enhed H1:Fyld ............................................................ 35
6.2 Hydrogeologisk enhed H2 og H3:Moræneler ....................................... 36
6.3 Hydrogeologisk enhed H4: Sand, grus og opknust kalk ....................... 36
6.4 Hydrogeologisk enhed H5: Fraktureret kalk med flintelag ................... 37
6.5 Hydrogeologisk konceptuel model........................................................ 39
7. Forureningsundersøgelser i moræneler ............................................................... 43
7.1 Intakte kerneprøver ............................................................................... 43
7.2 Poreluftskoncentrationer af radon, PCE og TCE .................................. 48
7.3 MIP ........................................................................................................ 50
7.4 FACT NAPL FLUTe liner .................................................................... 54
7.5 Konceptuel model for moræneler .......................................................... 57
8. Forureningsundersøgelser i kalk ......................................................................... 62
8.1 Intakte kerneprøver ............................................................................... 62
8.2 FACT NAPL FLUTe liner .................................................................... 65
8.3 Vandprøver ............................................................................................ 66
8.4 Konceptuel model for kalk .................................................................... 70
9. Diskussion og anbefalinger ................................................................................. 73
9.1 Sammenstilling af metoder.................................................................... 73
9.2 Udvikling af konceptuelle modeller for Naverland............................... 84
10. Konklusion .......................................................................................................... 86
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