This document summarizes long-term monitoring data from a site where enhanced in situ chemical reduction (ISCR) and bioaugmentation were used to remediate trichloroethene (TCE) dense non-aqueous phase liquid (DNAPL). Monitoring shows that TCE and daughter product mass is decreasing over time, total organic carbon and negative oxidation reduction potential levels remain elevated, and ethene generation continues - indicating the treatment is performing as intended. While dehalococcoides bacteria counts are lower than hoped, vinyl chloride levels are predicted to decrease by 2014 based on regression analysis. The results demonstrate the ISCR technology can provide an effective long-term remedy for TCE DNAPL sites.
Mark Killar, Western Pennsylvania Conservancy, “Sewickley Creek Cost/Benefit ...Michael Hewitt, GISP
Throughout Pennsylvania, many non-profit organizations have developed restoration plans for AMD impaired watersheds. To secure federal AML funding through Pennsylvania’s Abandoned Mine Reclamation Program and with other federal programs, those plans must include a cost/benefits analysis to assure that funds from the program are spent wisely. In an effort to assist in the development of a cost/benefit analysis for AMD projects being proposed for a qualified hydrologic unit watershed, Western Pennsylvania Conservancy worked with Hedin Environmental, through a technical assistance grant provided by Trout Unlimited’s Eastern Abandoned Mines Program, to develop a treatment cost calculator, which could compare costs on a variety of AMD treatment types. This presentation will demonstrate how it was used to develop a cost/benefit analysis for priority AMD discharges within the Sewickley Creek watershed in Westmoreland County.
Kevin Kraus, Saint Francis University Environmental Engineering Department, “...Michael Hewitt, GISP
Ancient technology that found its roots in the Catalan Forge in Spain, has seen a revival in recent years to treat acid mine drainage. This technology harnesses the power of hydraulics and hydrology by passively compressing air via the use of falling water, using no moving parts. A group of recently-graduated students from Saint Francis University have done extensive research in attempt to procure sizing guidance and parameters for the installation of this passive technology.
Waters’ SYNAPT G2-Si HDMS instrument, with its quadrupole – ion mobility-ToF geometry, is an unrivalled tool for the characterisation of complex materials
The orthogonal separation offered by ion mobility enables powerful structural elucidation workflows
Collisional Cross Section (CCS) measurements provide valuable confirmatory data points
Ion mobility-specific software allows interactive data evaluation and processing
Partnering and collaborating with key thought leaders has resulted in the development of unique petroleum industry-specific data processing software
Ion mobility- mass spectrometry can help to offer an additional orthogonal dimension of separation, and can help to deconvolute isomeric species in the ion mobility dimension, which, in turn, helps to simplify the analysis of these highly complex samples, and map the compositional space of petroleum samples, and can also characterise the shapes and sizes, or collisional cross sections, of molecules of interest.
The most important component of this work was the development of novel software that helps the user to visualise, interact with, and process ion mobility data – so, for the first time, we are able to utilise the ion mobility dimension in comprehensive petroleomics analyses.
The cleanup of AMD itself presents economic opportunities in addition to, of course, all the environmental benefits that result from cleaner streams and restored lands. It is vitally important that key policy makers understand the importance and benefits of AMD cleanup, and in particular the economic benefits. This presentation will highlight the findings from a recently completed study that focused on job creation around the long-term maintenance of passive treatment systems across Pennsylvania.
Mark Killar, Western Pennsylvania Conservancy, “Sewickley Creek Cost/Benefit ...Michael Hewitt, GISP
Throughout Pennsylvania, many non-profit organizations have developed restoration plans for AMD impaired watersheds. To secure federal AML funding through Pennsylvania’s Abandoned Mine Reclamation Program and with other federal programs, those plans must include a cost/benefits analysis to assure that funds from the program are spent wisely. In an effort to assist in the development of a cost/benefit analysis for AMD projects being proposed for a qualified hydrologic unit watershed, Western Pennsylvania Conservancy worked with Hedin Environmental, through a technical assistance grant provided by Trout Unlimited’s Eastern Abandoned Mines Program, to develop a treatment cost calculator, which could compare costs on a variety of AMD treatment types. This presentation will demonstrate how it was used to develop a cost/benefit analysis for priority AMD discharges within the Sewickley Creek watershed in Westmoreland County.
Kevin Kraus, Saint Francis University Environmental Engineering Department, “...Michael Hewitt, GISP
Ancient technology that found its roots in the Catalan Forge in Spain, has seen a revival in recent years to treat acid mine drainage. This technology harnesses the power of hydraulics and hydrology by passively compressing air via the use of falling water, using no moving parts. A group of recently-graduated students from Saint Francis University have done extensive research in attempt to procure sizing guidance and parameters for the installation of this passive technology.
Waters’ SYNAPT G2-Si HDMS instrument, with its quadrupole – ion mobility-ToF geometry, is an unrivalled tool for the characterisation of complex materials
The orthogonal separation offered by ion mobility enables powerful structural elucidation workflows
Collisional Cross Section (CCS) measurements provide valuable confirmatory data points
Ion mobility-specific software allows interactive data evaluation and processing
Partnering and collaborating with key thought leaders has resulted in the development of unique petroleum industry-specific data processing software
Ion mobility- mass spectrometry can help to offer an additional orthogonal dimension of separation, and can help to deconvolute isomeric species in the ion mobility dimension, which, in turn, helps to simplify the analysis of these highly complex samples, and map the compositional space of petroleum samples, and can also characterise the shapes and sizes, or collisional cross sections, of molecules of interest.
The most important component of this work was the development of novel software that helps the user to visualise, interact with, and process ion mobility data – so, for the first time, we are able to utilise the ion mobility dimension in comprehensive petroleomics analyses.
The cleanup of AMD itself presents economic opportunities in addition to, of course, all the environmental benefits that result from cleaner streams and restored lands. It is vitally important that key policy makers understand the importance and benefits of AMD cleanup, and in particular the economic benefits. This presentation will highlight the findings from a recently completed study that focused on job creation around the long-term maintenance of passive treatment systems across Pennsylvania.
Cooper Environmental’s Xact® 625i is designed for high time resolution multi-metals monitoring of ambient air, with detection limits that rival those of laboratory analysis. The Xact® 625i comes standard with a solid-state meteorological sensor and Cooper Environmental’s proprietary ADAPT analysis package, making the instrument one of the most powerful air pollution source detection offerings in the industry. ask info here: https://etserv.be/product/cooper-environmental-xact-625i/
Kidman Resources | ASX:KDR | RIS2014 Broken Hill Investor PresentationSymposium
Kidman Resources ASX:KDR - Investor presentation delivered at the 4th annual Resources Investment Symposium held in Broken Hill NSW Australia, 26-28 May 2014.
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Achieving the target set during COP21 will require the deployment of a diverse portfolio of solutions, including fuel switching, improvements in energy efficiency, increasing use of nuclear and renewable power, as well as carbon capture and storage (CCS).
It is in the context of CCS that carbon capture and utilisation (CCU), or conversion (CCC), is often mentioned. Once we have captured and purified the CO2, it is sometimes argued that we should aim to convert the CO2 to useful products such as fuels or plastics, or otherwise use the CO2 in processes such as enhanced oil recovery (CO2-EOR). This is broadly referred to as CCU.
In this webinar, Niall Mac Dowell, Senior Lecturer (Associate Professor) in the Centre for Process Systems Engineering and the Centre for Environmental Policy at Imperial College London, presented about the scale of the challenge associated with climate change mitigation and contextualise the value which CO2 conversion and utilisation options can provide.
Cooper Environmental’s Xact® 625i is designed for high time resolution multi-metals monitoring of ambient air, with detection limits that rival those of laboratory analysis. The Xact® 625i comes standard with a solid-state meteorological sensor and Cooper Environmental’s proprietary ADAPT analysis package, making the instrument one of the most powerful air pollution source detection offerings in the industry. ask info here: https://etserv.be/product/cooper-environmental-xact-625i/
Kidman Resources | ASX:KDR | RIS2014 Broken Hill Investor PresentationSymposium
Kidman Resources ASX:KDR - Investor presentation delivered at the 4th annual Resources Investment Symposium held in Broken Hill NSW Australia, 26-28 May 2014.
Equivalent Grain Size Method for Sealing Capacity Assessment in CCSYohanes Nuwara
This was presented in the 1st EAGE Workshop on Faults in Groundwater, CO2, Oil and Gas in Asia Pacific held virtually from Canberra in August 2021. On this occasion, I presented the research that we developed together in FGI Tokyo back in 2019 for seal rock capacity assessment in Gundih CCS Pilot Project.
Discusses lessons learned from an evaluation of environmental remediation of groundwater contaminated with both chlorinated solvents and fuel products.
Commerce Resources Corp. (TSXv: CCE) provides an update on work completed at its Blue River Tantalum-Niobium Project since the release of the National Instrument 43-101 compliant Mineral Resource Update for the Upper Fir Deposit. The news updates the geological, engineering, metallurgical and environmental programs carried out.
Perspectives on the role of CO2 capture and utilisation (CCU) in climate chan...Global CCS Institute
Achieving the target set during COP21 will require the deployment of a diverse portfolio of solutions, including fuel switching, improvements in energy efficiency, increasing use of nuclear and renewable power, as well as carbon capture and storage (CCS).
It is in the context of CCS that carbon capture and utilisation (CCU), or conversion (CCC), is often mentioned. Once we have captured and purified the CO2, it is sometimes argued that we should aim to convert the CO2 to useful products such as fuels or plastics, or otherwise use the CO2 in processes such as enhanced oil recovery (CO2-EOR). This is broadly referred to as CCU.
In this webinar, Niall Mac Dowell, Senior Lecturer (Associate Professor) in the Centre for Process Systems Engineering and the Centre for Environmental Policy at Imperial College London, presented about the scale of the challenge associated with climate change mitigation and contextualise the value which CO2 conversion and utilisation options can provide.
Please join EPA Region 9 and GEO Inc. for a technical presentation on In Situ Gas Thermal Remediation (GTR™) and thermal conductive heating (TCH) that will provide regulators, consultants, and field applicators with an understanding of the primary thermally enhanced contaminant removal mechanisms and will help distinguish three types of In Situ Thermal Remediation available commercially in the U.S. and internationally. Additionally, benefits from heat generation, such as increased rates of naturally occurring processes (including hydrolysis, increased bio-availability, and different forms of bio-degradation at various temperature regimes) will be highlighted. In order to identify when In Situ Thermal is appropriate, important design factors will be discussed for their applicability and operation including developing a comprehensive and high resolution conceptual site model through the use of passive soil gas sampling, MIP, LIF, and other high resolution techniques.
1. LONG TERM MONITORING DATA
EVALUATION OF BIOAUGMENTATION
DURING ISCR-ENHANCED
BIOREMEDIATION OF TCE DNAPL
James G.D. Peale, RG
Erik I. Bakkom, PE
(Maul Foster & Alongi Inc.)
Jeff Roberts, Sandra Dworatzek
(SiREM Laboratories)
Josephine Molin
(FMC Environmental Solutions)
June 2013
2. Site Overview
Technology Summary
Problem Statement
Analysis
Results
Summary
Implications
TOPICS
3. Former MGP waste site redeveloped for
manufacturing in 1970s
80+ acres adjacent to Portland Harbor NPL site
TCE released from a recycling system (1980-1985)
Impacts from release discovered in 2002
TCE DNAPL Source Zone
Impacts from about 5-34 m bgs
TCE up to 592,000 ug/L (DNAPL levels)
No TCE DNAPL observed
Cis-1,2-DCE up to 90,800 ug/L
Very little VC (< 100 ug/L)
Site Overview
5. Technology Summary
EHC
Powdered blend of zero-valent iron (ZVI) and hydrophilic
organic carbon
Creates strongly reducing conditions in groundwater for in situ
chemical reduction (ISCR)
ISCR results in abiotic dechlorination and supports anaerobic
bacteria
KB-1
Anaerobic consortium of dechlorinating bacteria
Includes dehalococcoides sp.
Requires ORP < -75 mV
Both technologies demonstrated success for
dissolved CVOC plumes
6. Technology Summary
EHC+KB-1 Full-Scale Implementation
46 m x 21 m x 3 m PRB – Source area only
Injected from ~12 – 34 m bgs
Supplemental upgradient areas
200+ injection points
~269,400 kg EHC
1,831 L KB-1
Direct-push drilling
23 Performance Monitoring Wells
10. Problem Statement
Remedial action objective is 11,000 ug/L
Threshold indicator for TCE DNAPL
Achieved in less than 12 months
Achieved mean TCE 3 ug/L
Declining cDCE and VC, but still elevated in
some wells
Dhc counts 107 – 108
Question: how long can this continue?
Will we see rebound?
11. Problem Statement
How long will Dhc sp. flourish?
Organic carbon needs
(other)
Continued reducing conditions?
Field data
Other functional requirements?
Continued cVOCs?
12. Long-Term Data Sets
Pilot Study Data
2006-2008
Shallow and deep wells, within and
downgradient of injection zone
Full-scale Data
2009-present
19 wells + pilot study wells
Monitoring program includes:
VOCs, TOC, Dhcv, vCRA
Field parameters
13. CVOC Data – kg estimated in
source area (EVS)
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
11/1/2008 5/20/2009 12/6/2009 6/24/2010 1/10/2011 7/29/2011 2/14/2012 9/1/2012 3/20/2013
TCE (kg) cDCE VC Ethene
15. Not to worry - VC Data regression
y = -0.1601x + 6676.3
R² = 0.7136
-20
0
20
40
60
80
100
120
140
160
Dec-11 Apr-12 Jul-12 Oct-12 Jan-13 May-13 Aug-13 Nov-13 Mar-14 Jun-14
Estimated VC Mass (kg)
Estimated VC Mass (kg) Linear (Estimated VC Mass (kg))
16. TOC Data – Mean of Full Scale
Data Set (n=23)
194
0
500
1000
1500
2000
2500
3000
3500
Total Organic Carbon (Total and Dissolved)
Primary Well Group (mg/L)
TOC (Total) - Mean TOC (Total) - Geometric Mean TOC (Dissolved) - Mean TOC (Dissolved) - Geometric Mean
Background TOC ~ 10 mg/L
17. Dhc Data – Full Scale Data Set
(n=23)
1.E+04
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
1.E+10
7/1/2009 1/17/2010 8/5/2010 2/21/2011 9/9/2011 3/27/2012 10/13/2012 5/1/2013
DHC
Full Scale Well Group (Count)
1/2 of non-detect values used
18. vCRA Data – full scale data set
1.00E+04
1.00E+05
1.00E+06
1.00E+07
1.00E+08
1.00E+09
1.00E+10
6/1/2008 12/18/2008 7/6/2009 1/22/2010 8/10/2010 2/26/2011 9/14/2011 4/1/2012 10/18/2012 5/6/2013 11/22/2013
vcrA
Primary Well Group
(Count)
1/2 of non-detect values used
19. TOC and DHC Data – Long Term
(n=4)
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
0
500
1000
1500
2000
2500
3000
3500
4000
5/1/2006 9/13/2007 1/25/2009 6/9/2010 10/22/2011 3/5/2013
Dhc(count)
TOC(mg/L)
WS-19 WS-18-101 WS-18-71 DHC
23. Summary (tbd)
Literature range sets boundaries
20 – 750 yrs (latter less useful)
Developing data set
Regression provides simple tool for prediction
Dual rates observed and should be considered
Early consumption followed by equilibrium
Modeling is promising approach
Estimates match lower range of regression
Can provide conservative (short) predictions to
improve site planning/closure
24. Implications (tbd)
Micro-scale ZVI is extremely durable
Data fit well with other observations
Similarity to presumed P&T timeframes (30 yrs)
How do we manage long-term?
Is monitoring required to demonstrate complete
exhaustion?
How can we extend confidence of this long-term
remedy to support site closure?