Screening Distances for Petroleum Vapor Intrusion Risk Assessment
|
|
- Adam Hood
- 6 years ago
- Views:
Transcription
1 Screening Distances for Petroleum Vapor Intrusion Risk Assessment 23nd Annual International Conference on Soil, Water, Energy, and Air and AEHS Foundation Annual Meeting San Diego, California March 18-21, 2013 Matthew Lahvis LNAPL SOURCE UNSATURATED ZONE Use this area for cover image high hydrocarbon (height 6.5cm, mass flux width 8cm) hydrocarbon LNAPL CAPILLARY ZONE SATURATED ZONE DISSOLVED PHASE O relative soil gas concentrations aerobic reaction front 1
2 OVERVIEW Background Empirical Studies Implementation Regulatory Uptake Conclusions 2
3 SEPARATION DISTANCES VS. ATTENUATION FACTORS Attenuation Factor 1.E-01 1.E-03 1.E-05 1.E-07 1.E-09 1.E-11 1.E-13 1.E-15 1.E-17 1.E-19 aerobic limit from DeVaull (2007) no degradation limit increased oxygen 1.E KEY POINT MODELING Source to Foundation Distance (m) RELATIVE DISTANCE ABOVE SOURCE 1 0 FIELD DATA HC O RELATIVE SOURCE CONCENTRATION September 2011 AF ~ 0 sharp reaction front AF ~ 1 attenuation factor is depth dependent for reactive VOCs (hydrocarbons) under aerobic conditions, rapid attenuation either see it or you don t (noted by ITRC, 2007) sharp attenuation interface amenable to exclusion criteria 3
4 SCREENING DISTANCES EMPIRICAL STUDIES Reference Database Dissolved Phase (ft) US EPA OUST (2013) Lahvis et al. (2013) Davis (2009) + 11 Maine and 1 Canada site 74 sites 829 data pairs US EPA (2013) Wright (2012) LNAPL (ft) UST: non UST: 18 Benzene Soil-Gas Screening Level ( g/m 3 ) LNAPL Indicator Concentration Criteria ( g/l) 50, 100 C gw benzene > 5,000 C gw TPH > 30,000 0 UST: 13 30, 50, 100 C gw benzene > 15,000 Davis (2009) Peargin and Kolhatkar (2011) Wright (2012) 62 sites 735 data pairs 25 sites 218 data pairs 124 sites 1080 data pairs 5 UST: 8 non UST: 30 complete attenuation C gw benzene > 1,000 C gw TPH > 30, (no sub-slab data) 50 1,000
5 KEY CONCLUSIONS FROM EMPIRICAL STUDIES vertical screening distances derived for benzene are longest of any hydrocarbon (i.e., can be used to conservatively define screening distances) dissolved-phase petroleum hydrocarbon sources pose little risk vertical screening distances for LNAPL sources - petroleum UST (e.g., retail): 13 to 15.4 ft - non-ust (e.g., terminal, pipeline, refinery): 18 ft (LIMITED DATA SET) soil type has a negligible on vertical screening distances (for the range of data evaluated) vertical screening distances are only slightly sensitive to the presence of building foundations and pavement (effects are inconclusive) vertical screening distances are deemed broadly suitable for most sites & recent gasoline fuel types vertical screening distances are expected to apply laterally in the absence of preferential pathways or significant hydrogeologic barriers use of O 2 soil-gas measurements alone to validate screening distances should be exercised with caution 5
6 SCREENING PROCESS NO ENTER 1a Do preferential pathways exist between source and building? NO 1b Is the building within the lateral inclusion distance? YES 1c Any other precluding conditions? YES YES NO LEGEND 1 APPLICABILITY 2b NO 2a Is LNAPL likely present below building? 2b YES 2 APPLICATION NO DISSOLVED PHASE Source-building separation distance sufficient? LNAPL Source-building separation distance sufficient? NO 3 ADDITIONAL ASSESSMENT YES YES 3 Further PVI Investigation or mitigation required 6
7 SCREENING PROCESS lateral offset 7
8 SCREENING PROCESS 8
9 SCREENING PROCESS 9
10 LEAD SCAVENGERS (1,2 DCA) soil-gas data (6 sites, 21 locations, 31 samples) 1,2 DCA in soil vapor (µg/m3) DRAFT Non detect (<RL) Detect Soil gas screening level 9.4 µg/m 3 from Chevron Separation Distance between Probe and DTW (ft) PROBABILITY (%) soil gas concentration < 9.4 ug/m DISTANCE ABOVE SOURCE WATER TABLE (ft) KEY POINT preliminary analysis indicates that 15 ft of vertical separation distance is adequately protective for 1,2-DCA when the vapor source is at the water table 10
11 SCREENING PROCESS 11
12 IMPLICATIONS FOR SITE INVESTIGATION ACT THE SAME LOOK THE SAME (a) (b) (c) UNSATURATED ZONE UNSATURATED ZONE UNSATURATED ZONE high hydrocarbon mass flux high hydrocarbon mass flux low hydrocarbon mass flux CAPILLARY ZONE SATURATED ZONE LNAPL CAPILLARY ZONE SATURATED ZONE NO LNAPL CAPILLARY ZONE SATURATED ZONE NO LNAPL MW MW MW LNAPL DISSOLVED PHASE MW = Monitoring Well from Lahvis et al. (2013) KEY POINT good source-type characterization (i.e., identification of residual-phase LNAPL) essential during initial site investigations 12
13 LNAPL INDICATORS from Lahvis et al. (2013) June
14 SCREENING PROCESS soil-gas sampling - 1,000x bioattenuation factor (Cal EPA 2012) modeling (e.g., BioVapor) from Cal EPA (2012) 1,000x bioattenuation factor 14
15 GROUNDWATER CONCENTRATION MEASUREMENTS SOIL GAS CONCENTRATION LOWERMOST PROBE ( g/m 3 ) BENZENE Detect Soil Gas (53 samples) Non Detect Soil Gas (89 samples) GROUNDWATER CONCENTRATION ( g/l) from Lahvis et al. (2013) KEY POINT groundwater concentrations have limited value in VI risk assessment at hydrocarbon sites (vapor concentrations << predicted by Henry s Law) poor correlation likely attributed to biodegradation in the capillary zone and inability to measure water table concentrations May
16 SCREENING DISTANCES REGULATORY VALUES Guidance References Australia (CRC Care) (2013) J. Wright (2011); US EPA (2013); Lahvis et al. (2013); R Davis (2009) EPA OUST (in prep) NONE States (CA, NJ, IN, WI) various references (R.Davis, McHugh et al.) include O2 requirement Screening Distance (ft) 6.5 : benzene Cgw < 1,000 g/l; TPH < 10,000 g/l 26 : benzene Cgw > 1,000 g/l; LNAPL 5 : benzene Cgw < 100 g/l (NJ, CA) < 1,000 g/l (IN, WI) 10 : benzene Cgw < 1,000 g/l (CA, NJ, IN) 20 : benzene 1 ppm < Cgw < LNAPL (WI) 30 : LNAPL
17 CONCLUSIONS source-building separation distance a more meaningful metric than attenuation factors for PVI screening empirical studies suggest: - 5 ft - dissolved-phase - 13 ft - LNAPL method simple to apply (source-building separation distance & source type are key factors) regulatory uptake by US EPA, Australia (CRC Care), states implementation strategy being documented in ITRC PVI guidance 17
18
19 CONSIDERATIONS / ADDITIONAL STUDY buffer distances - dissolved-phase sources uncertainties in water-table elevation (e.g., 5 10 ft) - LNAPL sources to account for uncertainties in delineating the edge of LNAPL (residual phase) (e.g., ft ) factors that affect biodegradation (O 2 availability) - large building foundations (e.g., associated with industrial/commercial, apartment complexes) - high-ethanol content fuel (e.g., E85) releases - pavement - large-volume releases (non-ust sites) 19
20 O2 SOIL-GAS MEASUREMENTS TPH CONCENTRATION SOIL GAS ( g/m 3 ) 3.5E E E E E E E E+00 Detect (307 Samples) Non Detect TPH (88 Samples) Sum of Partial Pressures < 95% atm (45 Samples) Hal's Chevron OXYGEN CONCENTRATION SOIL GAS (%) CUMULATIVE FRACTION OF SOIL GAS CONCENTRATION DATA (dimensionless) from Lahvis et al. (2013) KEY POINT O 2 /TPH concentrations in soil gas generally support the aerobic biodegradation reaction paradigm O 2 soil-gas concentration measurements not necessary for site screening May
21 O 2 SOIL-GAS MEASUREMENTS CUMULATIVE FRACTION OF SOIL GAS CONCENTRATION DATA (dimensionless) BENZENE AND TPH (HYDROCARBON) SOIL GAS CONCENTRATIONS Benzene (54 detect; 16 nondetect samples) TPH (60 detect; 0 nondetect samples) ANAEROBIC UNSATURATED ZONE (O 2 SOIL GAS CONCENTRATIONS < 4 % vol/vol) 1E+00 1E+02 1E+04 1E+06 1E+08 anaerobic unsaturated zone conditions (e.g., O 2 < 4% v/v) - ~25% of benzene soil-gas concentrations < 30 g/m 3 CUMULATIVE FRACTION OF SOIL GAS CONCENTRATION DATA (dimensionless) HYDROCARBON CONCENTRATION IN SOIL GAS ( g/m 3 ) BENZENE AND TPH (HYDROCARBON) SOIL GAS CONCENTRATIONS HIGHLY AEROBIC UNSATURATED ZONE (O 2 SOIL GAS CONCENTRATION > 17% vol/vol) Benzene (99 detect; 130 non detect samples) TPH (118 detect; 72 non detect samples) 1E+00 1E+02 1E+04 1E+06 1E+08 HYDROCARBON CONCENTRATION IN SOIL GAS ( g/m 3 ) highly aerobic unsaturated zone conditions (e.g., O 2 >17% v/v) - ~10% of benzene soil-gas concentrations >1,000 g/m 3 KEY POINT O 2 soil-gas concentration measurements may have limited value in validating site-screening criteria September
Screening Criteria to Evaluate Vapor Intrusion Risk from Lead Scavengers
Screening Criteria to Evaluate Vapor Intrusion Risk from Lead Scavengers Ravi Kolhatkar, Emma Luo, Tom Peargin, Natasha Sihota, Gary Jacobson Chevron Matthew Lahvis Shell Global Solutions (US), Inc. Qiong
More informationEmpirical Data to Evaluate the Occurrence of Sub-slab O 2 Depletion Shadow at Petroleum Hydrocarbon- Impacted Vapor Intrusion Sites
Empirical Data to Evaluate the Occurrence of Sub-slab O 2 Depletion Shadow at Petroleum Hydrocarbon- Impacted Vapor Intrusion Sites Ravi Kolhatkar, Emma Hong Luo & Tom Peargin Chevron Energy Technology
More informationExclusion Distance Criteria for Assessing Potential Vapour Intrusion at Petroleum Hydrocarbon Sites
Exclusion Distance Criteria for Assessing Potential Vapour Intrusion at Petroleum Hydrocarbon Sites Matthew Lahvis, Shell Global Solutions (UK), Thornton, England George DeVaull, Shell Global Solutions
More informationNovember 8, 2016 International Petroleum Environmental Conference. Tim Nickels Pastor, Behling & Wheeler, LLC
November 8, 2016 International Petroleum Environmental Conference Tim Nickels Pastor, Behling & Wheeler, LLC Long term, non-voluntary constant inhalation exposure to toxic compounds Non-voluntarily inhale
More informationDraft Petroleum Vapor Intrusion Information Paper. Michael Lowry, RTI International Matthew Young, EPA OUST
Draft Petroleum Vapor Intrusion Information Paper Michael Lowry, RTI International Matthew Young, EPA OUST g, Describe differences between petroleum vapor intrusion (PVI) and chlorinated solvent vapor
More informationVertical screening distances for total petroleum hydrocarbon for vapour intrusion risk assessment at petroleum underground storage tank sites
Thematic set: Organic contaminants in groundwater Published Online First Quarterly Journal of Engineering Geology and Hydrogeology https://doi.org/10.1144/qjegh2017-009 Vertical screening distances for
More informationA Comparison of BioVapor and Johnson and Ettinger Model Predictions to Field Data for Multiple Sites
Compare to J&E? O 2 for Mitigation? A Comparison of BioVapor and Johnson and Ettinger Model Predictions to Field Data for Multiple Sites AEHS 25th Annual International Conference on Soil, Water, Energy
More informationPVI Risk Pathway: Sampling Considerations
PVI Risk Pathway: Sampling Considerations AEHS PVI Workshop March 2015 Blayne Hartman Ph.D. 858-204-6170 www.hartmaneg.com PVI VI Pathway Made Simple Start Exclusion Criteria Exist? yes no Collect Clean
More informationA REVIEW OF VAPOR INTRUSION GUIDANCE BY STATE
A REVIEW OF VAPOR INTRUSION GUIDANCE BY STATE Laurent C. Levy, Ph.D., P.E., Gradient Senior Project Manager Webinar Tuesday, August 14, 2012 Northeast Waste Management Officials' Association Gradient Gradientcorp.com
More informationAugust Vapor Intrusion Guidance FAQs
August 2017 2017 Vapor Intrusion Guidance FAQs Topics: A. General B. Effect of New Guidance on In-Process Sites C. Future Use of Site D. Modeling E. Off-Site Properties F. Preferential Pathways G. Proximity
More informationVapor Intrusion: How, Why, Where, When
3/27/14 Vapor Intrusion: How, Why, Where, When Thomas McHugh (temchugh@gsi-net.com), GSI Environmental 1 Vapor Intrusion: Wazzat? BUILDING Effect on indoor air quality? GW source area Soil source area
More informationPA Vapor Intrusion Guidance
PA Vapor Intrusion Guidance Society of Women Environmental Professionals Capital Chapter November 10, 2016 Presented by: Carolyn Fair - Land Recycling Program PA Department of Environmental Protection
More informationVapor Intrusion Regulatory Guidance and IRIS Updates with Mitigation Case Studies. Richard J. Rago Haley & Aldrich 20 June 2012
Vapor Intrusion Regulatory Guidance and IRIS Updates with Mitigation Case Studies Richard J. Rago Haley & Aldrich 20 June 2012 Outline Vapor Intrusion Overview and VI Regulatory Landscape Recent Changes
More informationEvaluation of Spatial and Temporal Variability in VOC Concentrations at Vapor Intrusion Investigation Sites.
Evaluation of Spatial and Temporal Variability in VOC Concentrations at Vapor Intrusion Investigation Sites. Proceeding of Air & Waste Management Association s Vapor Intrusion: Learning from the Challenges,
More informationProposed Changes to EPA s Spreadsheet Version of Johnson & Ettinger Model (and some new spreadsheet tools)
Proposed Changes to EPA s Spreadsheet Version of Johnson & Ettinger Model (and some new spreadsheet tools) Workshop Integrating Observed & Modeled Vapor Attenuation The 15th Annual AEHS West Coast Conference,
More informationLessons from Petroleum Hydrocarbon and Chlorinated Solvent Sites Extensively Monitored for Vapor Intrusion
Lessons from Petroleum Hydrocarbon and Chlorinated Solvent Sites Extensively Monitored for Vapor Intrusion By Todd McAlary Geosyntec Consultants, Inc. EPA Workshop on Vapor Intrusion San Diego, CA March
More informationUse of Crawl Space Sampling Data and Other Lines of Evidence for Evaluating Vapor Intrusion
CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY DEPARTMENT OF TOXIC SUBSTANCES CONTROL Use of Crawl Space Sampling Data and Other Lines of Evidence for Evaluating Vapor Intrusion C.Y. Jeng and William Bosan
More information2. Appendix Y: Vapor Intrusion Modeling Requirements (Appendix to Statewide health standard VI guidance in the Technical Guidance Manual)
2. Appendix Y: Vapor Intrusion Modeling Requirements (Appendix to Statewide health standard VI guidance in the Technical Guidance Manual) DRAFT FOR DISCUSSION PURPOSES ONLY 19 June 2014 The Department
More informationEvaluating Risk of Heritage LNAPL Bodies. International Petroleum Environmental Conference 10/14/14
Evaluating Risk of Heritage LNAPL Bodies International Petroleum Environmental Conference 10/14/14 Evaluating Risk Source ITRC after Huntley and Beckett 2002 What is a Heritage LNAPL Body One or many of
More informationStylistic Modeling of Vadose Zone Transport Insight into Vapor Intrusion Processes
March 15, 2011 Workshop, Addressing Regulatory Challenges In Vapor Intrusion, A State of the Science Update Stylistic Modeling of Vadose Zone Transport Insight into Vapor Intrusion Processes Daniel B.
More informationCase Study of Modeled and Observed TCE Attenuation from Groundwater to Indoor Air. Christopher G. Lawless Johnson Wright, Inc.
Case Study of Modeled and Observed TCE Attenuation from Groundwater to Indoor Air Christopher G. Lawless Johnson Wright, Inc. October 18, 2004 Presentation Contents SITE BACKGROUND STUDY METHODS RESULTS
More informationExample Application of Long Term Stewardship for the Chlorinated Vapor Intrusion Pathway (and VOC sources)
Example Application of Long Term Stewardship for the Chlorinated Vapor Intrusion Pathway (and VOC sources) Megan Hamilton Director of Vapor Intrusion and Risk Assessment EnviroForensics March 24, 2015
More informationU.S. EPA s Vapor Intrusion Database: Preliminary Evaluation of Attenuation Factors
March 4, 2008 U.S. EPA s Vapor Intrusion Database: Preliminary Evaluation of Attenuation Factors Office of Solid Waste U.S. Environmental Protection Agency Washington, DC 20460 [This page intentionally
More informationESTCP Research on Optimization of Vapor Intrusion Mitigation Systems in Large Military Buildings
ESTCP Research on Optimization of Vapor Intrusion Mitigation Systems in Large Military Buildings Todd McAlary, Ph.D., P.Eng., P.G., CUT Principal and Practice Leader Vapor Intrusion Services Geosyntec
More information6. Organic Compounds: Hydrocarbons. General Comments Borden, Canada, tracer test Laurens, SC, gasoline spill Bemidji, MN, crude oil spill
6. Organic Compounds: Hydrocarbons General Comments Borden, Canada, tracer test Laurens, SC, gasoline spill Bemidji, MN, crude oil spill In the subsurface, biogeochemical processes that control contaminant
More informationEnhanced Anaerobic Biodegradation of a Refinery Benzene Groundwater Plume
Enhanced Anaerobic Biodegradation of a Refinery Benzene Groundwater Plume Robert (Rory) S. Johnston, PE Michael Eberle SAWEA CONFERENCE DECEMBER 2007 Presentation Outline Go With the Flow Anaerobic Process
More informationFull Scale Implementation Of Sulfate Enhanced Biodegradation To Remediate Petroleum Impacted Groundwater
Proceedings of the Annual International Conference on Soils, Sediments, Water and Energy Volume 14 Article 15 January 2010 Full Scale Implementation Of Sulfate Enhanced Biodegradation To Remediate Petroleum
More informationAtlantic RBCA Guidance for Soil Vapour and Indoor Air Monitoring Assessments: Overview. December 7 th, 2006 Moncton, New Brunswick
Atlantic RBCA Guidance for Soil Vapour and Indoor Air Monitoring Assessments: Overview December 7 th, 2006 Moncton, New Brunswick Who? Outline Came up with this document Why? Soil vapour/indoor air sampling
More informationSoil Gas Sampling for Vapor Intrusion Assessments: Key Issues
Soil Gas Sampling for Vapor Intrusion Assessments: Key Issues Dr. Blayne Hartman H&P Mobile Geochemistry Solana Beach, CA MA & CT, 12/2004 1 VI Requires Much Lower DLs Typical Soil Gas Concentrations MTBE
More informationRemediation Progress at California LUFT Sites: Insights from the GeoTracker Database
API Technical Bulletin #25: Remediation Progress at California LUFT Sites: Insights from the GeoTracker Database Thomas E. McHugh, Roopa Kamath, Poonam R. Kulkarni, Charles J. Newell, and John A. Connor,
More informationCase Studies of Innovative Use of Tracers, Indicators and Field GC/MS for Assessing the Vapor Intrusion Pathway
AEHS Westcoast Conference Work Shop, March 22, 2017 San Diego, CA Case Studies of Innovative Use of Tracers, Indicators and Field GC/MS for Assessing the Vapor Intrusion Pathway Stack effect & temperature
More informationUsing Fate and Transport Models to Evaluate Cleanup Levels
Fact Sheet # 25 Voluntary Remediation Program (VRP) (307) 777-7752 http://deq.state.wy.us/volremedi/index.asp Using Fate and Transport Models to Evaluate Cleanup Levels In its 2000 session, the Wyoming
More informationPhytoremediation Technology Evaluation and Preliminary Design
Phytoremediation Technology Evaluation and Preliminary Design Chlorinated and Petroleum Hydrocarbon Groundwater Plume at Former Gas Liquids Extraction Facility, Colorado November 13, 2012 Dustin Krajewski
More informationUpdated J&E Model VIAModel.xls
Updated J&E Model VIAModel.xls Helen Dawson, Ph.D. USEPA Region 8 AEHS Spring 2006 What s Different? Combines screening and advanced versions of the groundwater and soil gas spreadsheets. Provides default
More informationKentucky and Beyond BOS 200 Success Story. The RPI Group Approach to In-situ Petroleum Hydrocarbon Remediation
Kentucky and Beyond BOS 200 Success Story The RPI Group Approach to In-situ Petroleum Hydrocarbon Remediation 20 Years Serving the Environmental Industry Health and Safety is the number one priority at
More informationVapor Intrusion Risk Pathway: Updates & Hot topics
Vapor Intrusion Risk Pathway: Updates & Hot topics Aug 2006 Blayne Hartman H&P Mobile Geochemistry Carlsbad, CA 760-804-9678 www.handpmg.com This presentation is an excerpt of the vapor intrusion training
More informationTHERMAL REMEDIATION OF A CLOSED GASOLINE SERVICE STATION PRESENTATION AND DISCUSSION LED BY: GLEN VALLANCE PROJECT MANAGER, CGRS
THERMAL REMEDIATION OF A CLOSED GASOLINE SERVICE STATION IPEC 13 November 2013 CLIQUEZ ET MODIFIEZ LE TITRE PRESENTATION AND DISCUSSION LED BY: GLEN VALLANCE PROJECT MANAGER, CGRS 1. IN-SITU THERMAL REMEDIATION
More informationEPA S 2015 vapor intrusion guides What do they mean for your facility?
Environmental law alert Nixon peabody LLP July 22, 2015 EPA S 2015 vapor intrusion guides What do they mean for your facility? By J. Timothy Ramsey and Jean McCreary The United States Environmental Protection
More information7.0 EVALUATION OF REMEDIAL ALTERNATIVES
7.0 EVALUATION OF REMEDIAL ALTERNATIVES This section provides a description of the developed remedial alternatives based on viable remedial technologies and process options, as identified in Section 4.0,
More informationExamples of Data Collection Strategies and Methods
Examples of Data Collection Strategies and Methods by Todd McAlary, Consultants, Inc. AEHS VI Workshop March 14, 2005 Outline External vs Internal Data Collection Typical Scenarios Strategies for Data
More informationVapor Intrusion Issues
Vapor Intrusion Issues Seminar November 2, 2009 1 1 Vapor Intrusion Issues Presentation Team - Introduction S Steve Renninger EPA Region 5 OSC Kevin Turner EPA Region 5 OSC 2 2 Vapor Intrusion Issues Agenda
More informationEffects of Alternate Petroleum Hydrocarbon Sources in the Vadose Zone on the Vapor Intrusion Pathway beneath a Residential Community
Effects of Alternate Petroleum Hydrocarbon Sources in the Vadose Zone on the Vapor Intrusion Pathway beneath a Residential Community Paul Michalski 1, Shannon Thompson 1, Charlie DeWolf 1, Paul Nicholson
More informationIs this the maturation Phase of Vapor Intrusion Investigations?
Is this the maturation Phase of Vapor Intrusion Investigations? Presenter: Will Elcoate June 27 th, 2012 EPA Moves forward with Vapor Intrusion EPA plans to tear down three city businesses Columbus Telegram
More informationOregon Guidance for Assessing and Remediating Vapor Intrusion in Buildings
Department of Environmental Quality Overview of Oregon Guidance for Assessing and Remediating Vapor Intrusion in Buildings Brownfields and Land Revitalization 2011 Conference Spokane, Washington May 13,
More informationBIOVENTING. History. Where was the mass of contaminant going? The answer: Bacterial degradation!
BIOVENTING History When SVE was implemented, progress of remediation was monitored by measuring the concentrations of contaminants in the extracted gas (Ca) and the depletion of contaminant mass in the
More informationEvaluation of Vapor Intrusion from a Subsurface Diesel Plume UsingM ultiple Lines of Evidence
Evaluation of Vapor Intrusion from a Subsurface Diesel Plume UsingM ultiple Lines of Evidence John A. Connor, Farrukh Ahmad, and Thomas E. McHugh Groundwater Services, Inc, 2211 Norfolk, Suite 1000, Houston,
More informationPermeOx. Plus. Enhanced Aerobic Biodegradation
PermeOx Plus Enhanced Aerobic Biodegradation Introduction Successful bioremediation of petroleum contamination through aerobic microbial respiration depends on a number of factors including the presence
More informationMaking Better Decisions: Real-Time Data Collection and Interpretation
Making Better Decisions: Real-Time Data Collection and Interpretation Designing the Investigation and Interpreting the Data March 22-25, 2016 Presented by: Jason C. Ruf S 2 C 2 Inc., Raritan, New Jersey
More informationMTBE Fact Sheet #2 Remediation Of MTBE Contaminated Soil And Groundwater Background
United States Office Of Solid Waste And EPA 510-F-98-002 Environmental Protection Emergency Response Agency (5401G) www.epa.gov/oust/mtbe/ Office Of Underground Storage Tanks MTBE Fact Sheet #2 Remediation
More informationUsing Mass Balance to Assist in Determining Remedial Options. Stephen Thomson URS New Zealand Limited
Using Mass Balance to Assist in Determining Remedial Options Stephen Thomson URS New Zealand Limited Presentation Outline Introduction. Example Site. Mass Balance. Calculations. Outcomes. Introduction
More informationSTRATEGIES FOR LNAPL REMEDIATION
STRATEGIES FOR LNAPL REMEDIATION J. D. Keetley Petroleum Storage Tank Trust Fund Utah Department of Environmental Quality 2011 ASTSWMO LUST and State Funds Workshop September 13-15, 2011 Chicago, Illinois
More informationVAPOR INTRUSION FROM REGULATORY, TECHNICAL,
VAPOR INTRUSION FROM REGULATORY, TECHNICAL, AND LEGAL PERSPECTIVES Presented by the American Bar Association Section of Environment, Energy, and Resources, Section of State and Local Government Law and
More informationMary Ann Parcher ES&T, a Division of GES
Applying the LNAPL Conceptual Site Model (LCSM) Approach for Remedial Selection and Design, Determining Remedial Endpoints, and Negotiating Site Closure Mary Ann Parcher ES&T, a Division of GES mparcher@esnt.com
More informationNew Applications of Current Methods to Assess and Monitor Natural Attenuation
New Applications of Current Methods to Assess and Monitor Natural Attenuation Liz van Warmerdam Innovation that Provides Sustainable Solutions to Complex Local Challenges, Worldwide Outline What is Natural
More informationManufactured Gas Plant Site Management - Program 50
Manufactured Gas Plant Site Management - Program 50 Program Description Program Overview Most former manufactured gas plants (MGPs) ceased operation by the 1960s, but by-products and wastes, often disposed
More informationChlorinated Hydrocarbons A Widespread Issue
South Australia s Environment Protection Authority Chlorinated Hydrocarbons A Widespread Issue Dale McGill & Danielle Torresan Wednesday 19 November 2014 Overview: Chlorinated hydrocarbons TCE (as the
More informationVAPOR INTRUSION TECHNICAL GUIDANCE
NEW JERSEY DEPARTMENT OF ENVIRONMENTAL PROTECTION SITE REMEDIATION AND WASTE MANAGEMENT PROGRAM VAPOR INTRUSION TECHNICAL GUIDANCE Indoor Air Soil Gas Ground Water Version 4.1 New Jersey Department of
More informationCOMMENTS RECEIVED ON PROPOSED GUIDANCE Land Recycling Program Technical Guidance Manual Section IV.A.4 Vapor Intrusion into Buildings from
COMMENTS RECEIVED ON PROPOSED GUIDANCE Land Recycling Program Technical Guidance Manual Section IV.A.4 Vapor Intrusion into Buildings from Groundwater and Soil under the Act 2 Statewide Health Standard
More informationTyree 26 Town Forest Road, Webster, MA Fax: Phone:
Tyree 26 Town Forest Road, Webster, MA 01570 Fax: 508-640-0370 Phone: 508-640-0300 April 9, 2012 Massachusetts Department of Environmental Protection Northeast Regional Office 205B Lowell Street Wilmington,
More informationUNDERSTANDING THE ROLE OF SEWER PREFERENTIAL PATHWAYS IN VAPOR INTRUSION. Thomas McHugh, Ph.D., D.A.B.T. Lila Beckley, P.G.
UNDERSTANDING THE ROLE OF SEWER PREFERENTIAL PATHWAYS IN VAPOR INTRUSION Preliminary Results from ESTCP Project ER-201505 Thomas McHugh, Ph.D., D.A.B.T. Lila Beckley, P.G. GSI Environmental AEHS Conference
More informationOPTIMIZATION OF A CHEMICAL OXIDATION TREATMENT TRAIN PROCESS FOR GROUNDWATER REMEDIATION. Gary Cronk, P.E., CHMM
OPTIMIZATION OF A CHEMICAL OXIDATION TREATMENT TRAIN PROCESS FOR GROUNDWATER REMEDIATION Gary Cronk, P.E., CHMM Presentation at the Battelle 5 th International Conference on Remediation of Chlorinated
More informationVapour Intrusion Regulatory Framework and Case Law Review
Vapour Intrusion Regulatory Framework and Case Law Review John Georgakopoulos Partner Willms & Shier Environmental Lawyers LLP www.willmsshier.com Remediation Technologies Symposium 2013 October 16-18,
More informationInterpreting Analytical Results
Interpreting Analytical Results Beyond Guidelines and Exceedances Frans Hettinga Tetra Tech EBA Inc. Calgary, Alberta Contents Focus on groundwater chemistry Some basics and tricks What is the value? A
More informationNatural Source Zone Depletion of LNAPL - How to Get to Yes (A Quality LNAPL Conceptual Site Model Decision Tree)
Natural Source Zone Depletion of LNAPL - How to Get to Yes (A Quality LNAPL Conceptual Site Model Decision Tree) Prepared by: Grant Trigger (gtrigger@racertrust.org), Michigan Cleanup Manager (RACER Trust,
More informationSoil Vapor Intrusion Training In The New Economy*
Soil Vapor Intrusion Training In The New Economy* Bill Wertz NYSDEC Robert Ettinger Geosyntec Consultants *John Fitzgerald was supposed to do this, but his plans were impacted by the New Economy NYSDEC
More informationSurfactant Enhanced Remediation Of Petroleum and Chlorinated Contaminated Sites. Bud Ivey Ivey International
Surfactant Enhanced Remediation Of Petroleum and Chlorinated Contaminated Sites Bud Ivey Ivey International SMART Remediation Ottawa, ON February 16, 2017 SMART is Powered by: www.vertexenvironmental.ca
More informationGROUNDWATER: CLEANING UP
9-12 GROUNDWATER: CLEANING UP SUBJECTS: TIME: Science (Environmental Science, Physical Science, Earth Science), Social Studies (Political Science, Government) 2-8 class periods MATERIALS: Box (cardboard
More informationIn Situ, Low Temperature Thermal Remediation of LNAPL with Pesticides and Other Recalcitrant Compounds
In Situ, Low Temperature Thermal Remediation of LNAPL with Pesticides and Other Recalcitrant Compounds RemTech 2017, Banff Springs Hotel and Conference Centre October 11, 2017 Presented by - Jay Dablow,
More informationTechnical Protocol for Evaluating the Natural Attenuation of MtBE Regulatory and Scientific Affairs Department
Technical Protocol for Evaluating the Natural Attenuation of MtBE Regulatory and Scientific Affairs Department API PUBLICATION 4761 MAY 2007 Technical Protocol for Evaluating the Natural Attenuation of
More informationBest management practices for vapor investigation and building mitigation decisions
www.pca.state.mn.us Best management practices for vapor investigation and building mitigation decisions Purpose This best management practices (BMPs) document describes the processes used to conduct vapor
More informationSoil Gas Analytical Methods (Overview, TAGA, Forensics)
Soil Gas Analytical Methods (Overview, TAGA, Forensics) Ertel Facility Dr. Blayne Hartman, H&P Mobile Geochemistry David Mikunas, EPA-TAGA Ms. Gina Plantz, Newfields This presentation gives a very brief
More informationAECOM tel 8000 Virginia Manor Road, Suite fax Beltsville, MD 20705
AECOM 301-289-3900 tel 8000 Virginia Manor Road, Suite 110 301-289-3901 fax Beltsville, MD 20705 March 30, 2018 Ms. Jeannette DeBartolomeo AECOM Project: 60144763 Maryland Department of Environment Oil
More informationNez Perce Tribe Groundwater Assessment and Cleanup
Nez Perce Tribe Groundwater Assessment and Cleanup Nez Perce Tribal Response Program Multidisciplinary program, including LUST Prevention, LUST Assessment, Brownfields, and Emergency Response Two properties
More informationHow To Effectively Recover Free Product At Leaking Underground Storage Tank Sites
How To Effectively Recover Free Product At Leaking Underground Storage Tank Sites A Guide For State Regulators United States Environmental Protection Agency Office of Underground Storage Tanks, OSWER National
More informationTechnical and Regulatory Guidance Supplement
Technical and Regulatory Guidance Supplement Vapor Intrusion Pathway: Investigative Approaches for Typical Scenarios A Supplement to Vapor Intrusion Pathway: A Practical Guideline January 2007 Prepared
More informationLandfill Case Study: the New River Regional Landfill
Aerobic vs. Anaerobic Bioreactor Landfill Case Study: the New River Regional Landfill Presented at SWANA s 6 th Annual Landfill Symposia San Diego, CA June 18-20, 2001 Debra R. Reinhart, PhD Timothy Townsend,
More informationAn Investigation on Remediation of Transformer Oil Contaminated Soil by Chemical Oxidation Using Hydrogen Peroxide
An Investigation on Remediation of Transformer Oil Contaminated Soil by Chemical Oxidation Using Hydrogen Peroxide Y. Chang,, G. Achari and C.H. Langford University of Calgary, Calgary Alberta Canada Biological
More informationGROUNDWATER INFORMATION SHEET. Methyl tertiary-butyl ether (MTBE)
GROUNDWATER INFORMATION SHEET Methyl tertiary-butyl ether (MTBE) The purpose of this groundwater information sheet is to provide general information regarding a specific constituent of concern (COC). The
More informationSteps in Conducting Structural Vapor Intrusion Potential Evaluations Under the Inactive Hazardous Sites Branch 13 February 2017
Steps in Conducting Structural Vapor Intrusion Potential Evaluations Under the 13 February 2017 This document provides the steps for conducting structural vapor intrusion evaluations under the Inactive
More informationModeling the Vapor Intrusion Pathway: Revisions to the MCP GW-2 Groundwater Standards
Modeling the Vapor Intrusion Pathway: Revisions to the MCP GW-2 Groundwater Standards Environmental Protection One Winter Street, Boston, MA 02108 http://mass.gov/dep Paul W. Locke Bureau Waste Site Cleanup
More informationVapor Encroachment Screening Under the Newly-Revised ASTM E Standard
em feature by Anthony Buonicore Vapor Encroachment Screening Under the Newly-Revised ASTM E 2600-10 Standard Anthony J. Buonicore, P.E., DEE, QEP, is chief executive officer of The Buonicore Group, and
More informationEnvironmental Solutions. Klozur CR. Combined Chemical and Bio-Remediation
Combined Chemical and Bio-Remediation Klozur CR A combination mixture that supports a two fold mechanism for treating contaminates of concern, short term In Situ Chemical Oxidation (ISCO), with alkaline
More informationS-ISCO REMEDIATION OF COAL TAR
Case Study Site Former Roofing Products Manufacturer, Queens, New York Contaminants of Concern VOCs (BTEX) & SVOCs (PAHs and naphthalene) related to MGP coal tar in soil & groundwater East River S-ISCO
More informationContaminant Degradation and Forensics Using Compound Specific Isotope Analysis
Contaminant Degradation and Forensics Using Compound Specific Isotope Analysis Aaron Peacock, Pat McLoughlin and Bob Pirkle 220 William Pitt Way, Pittsburgh, PA 15238 Tel: 412-826-5245 What Is a Stable
More informationTECHNICAL GUIDANCE. Groundwater Protection Model ON CONTAMINATED SITES
Groundwater Protection Model 13 TECHNICAL GUIDANCE ON CONTAMINATED SITES Version 2.0 November 1, 2017 This document provides guidance to qualified professionals on using the ministry s Groundwater Protection
More informationCHAPTER IV METHODS FOR EVALUATING RECOVERABILITY OF FREE PRODUCT
CHAPTER IV METHODS FOR EVALUATING RECOVERABILITY OF FREE PRODUCT CHAPTER IV METHODS FOR EVALUATING RECOVERABILITY OF FREE PRODUCT The primary objectives of a free product recovery system are to recover
More informationEPA s Final Vapor Intrusion Guidance
EPA s Final Vapor Intrusion Guidance Introductory Webinar for EPA Staff by Richard Kapuscinski Office of Land & Emergency Management (OLEM) October 2017 1 I. What is Vapor Intrusion and Why Does it Matter?
More informationH&H Job No. DS0-05. April 29, South Tryon Street Suite 100 Charlotte, NC
Risk Management Plan Gay Laundry and Cleaners DSCA ID No. 60-0044 1101 North Brevard Street Charlotte, Mecklenburg County North Carolina Dry-Cleaning Solvent Cleanup Act Program H&H Job No. DS0-05 April
More informationApplication of Human-health Risk Assessment in Italy: Regulatory aspects and technical guidelines
Application of Human-health Risk Assessment in Italy: Regulatory aspects and technical guidelines L. D'Aprile, M. Falconi, A. Vecchio ISPRA - National Institute for Environmental Protection and Research
More informationI-ROX. Chemical Reduction-Oxidation (REDOX) Technology
I-ROX Chemical Reduction-Oxidation (REDOX) Technology 1.0 TECHNOLOGY OVERVIEW The I-ROX remediation products and application technology represent a new innovative tool for in-situ and ex-situ remediation
More informationTechniques Used to Evaluate Potential LNAPL Mobility
Techniques Used to Evaluate Potential LNAPL Mobility Submitted by: David A. Fursevich, M.Sc., R. Donald Burnett, M.Sc., P.Eng., and Christopher P. Lach, P.Eng. Morrow Environmental Consultants Inc., Member
More informationDRAFT Procedures for Quantifying Fugitive VOC Emission Sources at Petroleum Facilities
San Joaquin Valley Unified Air Pollution Control District DRAFT Procedures for Quantifying Fugitive VOC Emission Sources at Petroleum Facilities Approved By: Seyed Sadredin Director of Permit Services
More informationBiological Reductive Dechlorination of Chlorinated Compounds. Barry Molnaa WSW Remediation Practice Manager ARCADIS
Biological Reductive Dechlorination of Chlorinated Compounds Barry Molnaa WSW Remediation Practice Manager ARCADIS 1 Presentation Outline What are we trying to do? How is it supposed to work? What are
More informationIn-situ Remediation Lessons Learned
Slide 1 In-situ Remediation Lessons Learned John Sankey, P.Eng., True Blue Technologies, Long Beach, CA Vancouver, BC Slide 2 In-situ Remediation Lessons Learned Introduction Case studies LNAPL Remediation
More informationMixed Plume Remediation using EHC In-Situ Chemical Reduction and Oxidation Technologies
Mixed Plume Remediation using EHC In-Situ Chemical Reduction and Oxidation Technologies Innovative Solutions for Federal Contaminated Sites in Pacific and Northern Regions October 15, 2008 John Vogan,
More informationSustainability; in Residential, Commercial and Industrial Buildings
420 Not Heated 422 Heated ORD VI-Research Duplex and Wheeler Building, Indianapolis- Summary of Evidence to Date: Temporal Variability in Long-term Mitigation Performance and Before Mitigation: What Causes
More informationVapor Intrusion Attenuation Factors Based On Long Term Monitoring Data
Proceedings of the Annual International Conference on Soils, Sediments, Water and Energy Volume 12 Article 38 January 2010 Vapor Intrusion Attenuation Factors Based On Long Term Monitoring Data D.J. Folkes
More informationTHERMAL IN SITU SUSTAINABLE REMEDIATION (TISR) Linking Renewable Energy to Sustainable Site Restoration
THERMAL IN SITU SUSTAINABLE REMEDIATION (TISR) Linking Renewable Energy to Sustainable Site Restoration May 2016 Davinder Randhawa Low-T Thermal Remediation Fast-evolving Hot water recirculation Aquifer
More informationGroundwater Remediation Using Engineered Wetlands
Groundwater Remediation Using Engineered Wetlands Ryan Devlin B.Sc. Chem. Water Resource Business Unit Leader April 27, 2009 A case study British Petroleum, Wyoming Casper Introduction Who we are North
More informationSoil vapor surveys can be used for a number of purposes, including the following:
IV. SOIL VAPOR SAMPLING The following guidelines are for conducting soil vapor sampling in San Diego County. The references used to develop these guidelines are presented in Appendix III. Other vapor survey
More information