General Electric – Housatonic River Project November 6, 2002 Overview of NAPL and Groundwater...

General Electric – Housatonic River ProjectGeneral Electric – Housatonic River ProjectNovember 6, 2002November 6, 2002November 6, 2002November 6, 2002

Overview of NAPL and Groundwater Programs

Mike Nalipinski EPA New England

General Electric - Housatonic River Project: Slide General Electric - Housatonic River Project: Slide 22

Groundwater Management Area (GMA) MapGroundwater Management Area (GMA) Map

Generalized Groundwater Flow DiagramGeneralized Groundwater Flow Diagram

Generalized Groundwater Flow Map for GMA-1 Generalized Groundwater Flow Map for GMA-1

Non-Aqueous Phase Liquids (NAPLs)Non-Aqueous Phase Liquids (NAPLs)

• Definition: Hydrocarbon Liquids (Commonly Called Oils) That Do Not Readily Mix With or Dissolve in Water (Non-Aqueous).

• Dense NAPLs (DNAPLs) Tend to Sink in Water.

• Light NAPLs (LNAPLs) Tend to Float on Water.

• Definition: Hydrocarbon Liquids (Commonly Called Oils) That Do Not Readily Mix With or Dissolve in Water (Non-Aqueous).

• Dense NAPLs (DNAPLs) Tend to Sink in Water.

• Light NAPLs (LNAPLs) Tend to Float on Water.

NAPLs at the GE - Housatonic River SiteNAPLs at the GE - Housatonic River Site

• Pyranol: Mixture of PCBs (Aroclors 1254 or Pyranol: Mixture of PCBs (Aroclors 1254 or 1260) with Trichlorobenzene. Acts as a 1260) with Trichlorobenzene. Acts as a DNAPL.DNAPL.

• Aroclor 1260: PCB oil. Acts as a DNAPL. Aroclor 1260: PCB oil. Acts as a DNAPL.

• 10C Insulating Oil: Petroleum distillate 10C Insulating Oil: Petroleum distillate (mineral oil). Acts as an LNAPL.(mineral oil). Acts as an LNAPL.

• Coal Tar: Manufactured Gas Plant sludge Coal Tar: Manufactured Gas Plant sludge and liquids. Acts as an LNAPL or DNAPL.and liquids. Acts as an LNAPL or DNAPL.

• Pyranol: Mixture of PCBs (Aroclors 1254 or Pyranol: Mixture of PCBs (Aroclors 1254 or 1260) with Trichlorobenzene. Acts as a 1260) with Trichlorobenzene. Acts as a DNAPL.DNAPL.

• Aroclor 1260: PCB oil. Acts as a DNAPL. Aroclor 1260: PCB oil. Acts as a DNAPL.

• 10C Insulating Oil: Petroleum distillate 10C Insulating Oil: Petroleum distillate (mineral oil). Acts as an LNAPL.(mineral oil). Acts as an LNAPL.

• Coal Tar: Manufactured Gas Plant sludge Coal Tar: Manufactured Gas Plant sludge and liquids. Acts as an LNAPL or DNAPL.and liquids. Acts as an LNAPL or DNAPL.

NAPL Conceptual DiagramNAPL Conceptual Diagram

Approximate Extent of LNAPL & DNAPL – Spring 2001Approximate Extent of LNAPL & DNAPL – Spring 2001

Approximate Extent of LNAPL at Unkamet Brook AreaApproximate Extent of LNAPL at Unkamet Brook Area

NAPL Performance StandardsNAPL Performance Standards

• No Discharge of NAPL to Surface Water or Sediments Around or Under Barriers.

• Eliminate NAPL from Wells Near River and Lake Banks.

• Reduce NAPL in all Wells to Minimize Potential NAPL Migration to Surface Water and Help Achieve Groundwater Standards.

• Demonstrate that NAPL Near Buildings Doesn’t Adversely Affect Indoor Air Quality.

• No Discharge of NAPL to Surface Water or Sediments Around or Under Barriers.

• Eliminate NAPL from Wells Near River and Lake Banks.

• Reduce NAPL in all Wells to Minimize Potential NAPL Migration to Surface Water and Help Achieve Groundwater Standards.

• Demonstrate that NAPL Near Buildings Doesn’t Adversely Affect Indoor Air Quality.

Sheetpile Containment Barrier & NAPL Recovery WellSheetpile Containment Barrier & NAPL Recovery Well

Summary of GMA-1 NAPL Recovery by GESummary of GMA-1 NAPL Recovery by GE

10,000

100,000

1,000,000

Yearly LNAPL & DNAPL Recovery (gallons)

Cumulative LNAPL & DNAPL Recovery (gallons)

Groundwater Treatment Plant and Recovery Well 64-RGroundwater Treatment Plant and Recovery Well 64-R

NAPL Remediation Animation, 1986 - 2000NAPL Remediation Animation, 1986 - 2000

General Electric - Housatonic River Project: Slide General Electric - Housatonic River Project: Slide 1515General Electric - Housatonic River Project: Slide General Electric - Housatonic River Project: Slide 1515

Groundwater Quality Standards Massachusetts Contingency Plan (MCP) Groundwater Quality Standards Massachusetts Contingency Plan (MCP)

• MCP GW-2 Standards – Do not Exceed GW-2 Concentrations in Compliance Wells Near Buildings to Prevent Adverse Effects to Indoor Air Quality.

• MCP GW-3 Standards – Do not Exceed GW-3 Concentrations in Monitoring Wells to Protect Surface Water from Contaminated Groundwater Discharge.

• MCP GW-2 Standards – Do not Exceed GW-2 Concentrations in Compliance Wells Near Buildings to Prevent Adverse Effects to Indoor Air Quality.

• MCP GW-3 Standards – Do not Exceed GW-3 Concentrations in Monitoring Wells to Protect Surface Water from Contaminated Groundwater Discharge.

MCP Groundwater Quality Standards - Example TableMCP Groundwater Quality Standards - Example Table

AnalyteGW-2

Standard (ppm)

GW-3 Standard

Total PCBs Not Applicable 0.0003

Chlorobenzene 1 0.5

1,2,4-Trichlorobenzene 10 0.5

Trichloroethene (TCE) 0.3 20

Naphthalene 6 6

GW-2 & GW-3 Compliance WellsGW-2 & GW-3 Compliance Wells

Groundwater Monitoring Well Installation & SamplingGroundwater Monitoring Well Installation & Sampling

Groundwater Monitoring ProgramGroundwater Monitoring Program

Baseline Groundwater Monitoring Program• Designed to Establish Current Conditions• Quarterly Water Level Monitoring• Semi-annual Groundwater Quality Sampling for Two

Long-Term Groundwater Monitoring Program• Designed to Verify Attainment of Standards Over

Time• Program Specifics to be Determined After Baseline

Program is Completed• Monitoring/Sampling to be Conducted at Intervals of

No More Than 2 Years.

Baseline Groundwater Monitoring Program• Designed to Establish Current Conditions• Quarterly Water Level Monitoring• Semi-annual Groundwater Quality Sampling for Two

Long-Term Groundwater Monitoring Program• Designed to Verify Attainment of Standards Over

Time• Program Specifics to be Determined After Baseline

Program is Completed• Monitoring/Sampling to be Conducted at Intervals of

No More Than 2 Years.

Groundwater Sampling/Testing TeamGroundwater Sampling/Testing Team

GMA-1 & GMA-5 Compliance WellsGMA-1 & GMA-5 Compliance Wells

GMA-2 & GMA-4 Compliance WellsGMA-2 & GMA-4 Compliance Wells

GMA-3 Compliance WellsGMA-3 Compliance Wells

General Electric – Housatonic River ProjectGeneral Electric – Housatonic River ProjectNovember 6, 2002November 6, 2002November 6, 2002November 6, 2002

Overview of NAPL and Groundwater Programs

General Electric – Housatonic River Project November 6, 2002 Overview of NAPL and Groundwater...

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Structural Characterization and Passive Remediation of NAPL in

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Darcy scale NAPL dissolution in heterogeneous … aim of this study is to develop NAPL dissolution in heterogeneous porous media by one and two dimensional physical model at macroscopic

Two-Dimensional Modeling of the NAPL Dissolution in ...file.scirp.org/pdf/CWEEE_2016122815443802.pdfB. Mabiala et al. 59 are filled initially with water and NAPL. The typical system

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Improved Iterative Methods for NAPL Transport Through Porous Media

Shoreline Remediation of Petroleum Hydrocarbons Using an ...€¦ · Geocomposite NAPL Capacity Comparison. Capacity tests performed on site LNAPL. Results For diesel, 3 L NAPL/m

Review Paper/ Remediation of NAPL Source Zones: Lessons

NAPL Characterization and Remediation Short …aclca.org.au/docs/NAPL-Characterization-and-Remediation...Microsoft Word - NAPL Characterization and Remediation Short Course Brochure.docx

[NAPL Owners Conference 2011] Print + Mobile: Understanding QR Codes