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COMMITMENT & INTEGRITY DRIVE RESULTS
Dan Bryant, Duff Collins, and Jason HouseWoodard & Curran
Leveraging Warm Water from Source Area Thermal Remedy for Synergistic Biotic and Abiotic Degradation of a CVOC Plume
OverviewBackground and Approach Thermal remedy in DNAPL source area Downgradient plume extends ~1,600 feet Leverage warm water for enhanced bioremediation Provect-IR – biotic and abiotic reaction mechanismsResults Water temperatures have increased 3-22°C 10x to >100x reduction in plume VOC concentrations One well cluster with insufficient reagent
Site and BackgroundNJ - Urban / Industrial AreaChlorinated Solvents (TCE, etc.)~1,600-ft Dissolved Plume
DNAPL Source Area(Thermal Remedy)
Proximal Plume Area(Biotic/Abiotic Remedy)
N
Site and Background
0 400 800 1,200 1,600
20
-20
-40
0
SandBedrock
Silt
Silt
Building Building Fill
Thermal
Elev
ation
(ft)
Distance (ft)
Biotic+AbioticMNA
Thermal Remedy Effects Warm water transport
downgradient increases: VOC desorption Organic carbon release Microbial activity Abiotic degradation
rates
Leverage these effects to enhance degradation in proximal plume area
ThermalSourceRemedy
N
Injection Layout
Treatment Zone 1
Treatment Zone 2
Groundwater Flow
MW-33S/D Cluster
MW-29S/D Cluster MW-34S/D Cluster
Treatment Zone 2
Treatment Zone 1MW-15
Targeted transmissive sand zone, 14-57 ft below grade
Direct-push injection 30% solids slurry 148,500 lbs Provect-IR 325 injection intervals 57 borings
Injection Details
Temperature Results
1015202530354045
12/11/2017 4/10/2018 8/8/2018 12/6/2018
Temp
eratu
re (°
C)
Date
MW-15
MW-33S
MW-33D
Treatment Zone 1 (Upgradient)
Temperature Results
Treatment Zone 2 (Downgradient)
1015202530354045
12/11/2017 4/10/2018 8/8/2018 12/6/2018
Temp
eratu
re (°
C)
Date
MW-29SMW-29DMW-34SMW-34D
VOC Results – Treat Zone 1
1
10
100
1,000
10,000
100,000
1,000,000
7/4/2017 12/31/2017 6/29/2018 12/26/2018
Conc
entra
tion (µg
/L)
Date
TCEcis-DCEVC
HeatingInjection Events
MW-33D
MW-33S and MW-15 historically <100 ug/L
VOC Results – Treat Zone 2MW-34D
1
10
100
1,000
10,000
7/4/2017 12/31/2017 6/29/2018 12/26/2018
Conc
entra
tion (µg
/L)
Date
TCEcis-DCEVC
HeatingInjection Events
VOC Results – Treat Zone 2
1
10
100
1,000
10,000
100,000
7/4/2017 12/31/2017 6/29/2018 12/26/2018
Conc
entra
tion (µg
/L)
Date
TCEcis-DCEVC
HeatingInjection Events
MW-29D
VOC Results – Treat Zone 2
020,00040,00060,00080,000
100,000120,000140,000
7/4/2017 12/31/2017 6/29/2018 12/26/2018
Conc
entra
tion (µg
/L)
Date
TCEcis-DCEVC
HeatingInjection Events
MW-34S
VOC Results – Treat Zone 2
0
15,000
30,000
45,000
60,000
75,000
90,000
7/4/2017 12/31/2017 6/29/2018 12/26/2018
Conc
entra
tion (µg
/L)
Date
TCEcis-DCEVC
HeatingInjection Events
MW-29S
Wrap Up Leveraged warm water downgradient from thermal treatment area Utilized Provect-IR, combined biotic and abiotic treatment reagent Direct-push injection in two permeable reactive zones Temperature increases observed but less than expected One well cluster likely has insufficient reagent
TCE decrease 50%, cDCE increase 3x
10x to 100x reductions in other wells Continuing to evaluate semi-annually
Thank You!
Contact Information:Dan Bryant: (609) 375-8026 or [email protected] Collins: (781) 613-0270 or [email protected] House: (207) 558-3731 or [email protected]
