The following link will allow the user to search for a particular case by address or other identifying information that is suspected to be open or closed.

• Case Information Search
  

Public Information Act Requests

Complete program files can be requested through the Public Information Act.  Information on making a request can be found on MDE's Public Information Act page.

Posted Remediation Site Documents

The sites listed and documents posted below are only a partial listing of the open remediation sites and documents available within the program's files.  For a complete file review please complete a Public Information Act request through the link above.

Anne Arundel County

Annapolis

Wiley H. Bates Middle School

•  Response Letter to Concerned Citizen - November 8, 2018
•  Request for Subsurface Investigation Work Plan - November 20, 2018
•  Subsurface Investigation Work Plan - December 26, 2018
•  Direct Push Work Plan Approval - January 28, 2019
•  Limited Subsurface Investigation Report - April 22, 2019
•  Proposed Corrective Action Plan - April 23, 2019
•  Addendum to Proposed Corrective Action Plan - May 13, 2019
•  Corrective Action Plan Approval - June 11, 2019
•  Interim Work Plan - October 7, 2019
• Well Installation Summary and First Quarterly Sampling Report - November 4, 2019 
• Enhanced Fluid Recovery Evaluation Report - November 14, 2019​  
• Corrective Action Plan Approval - March 10, 2020
• Final EFR Evaluation Report - May 11, 2020   
• LPH System Operation & Recovery Report - September 14, 2020
• Site Status Letter - October 21, 2020
• LPH System Operation & Recovery Report - November 2, 2020
• LPH System Operation & Recovery Report - March 15, 2021 
• Revised Work Plan for Step Drawdown Test - October 28, 2021​ 
• Pump Test Work Plan Approval - December 22, 2021​ 
  
• Step Drawdown Test Results - March 25, 2022  
• LPH System Operation & Recovery Report - July 20, 2022
• Partial Work Plan Approval - October 25, 2022
  
• Report of Observation - February 28, 2023 
• Second Quarter Sampling Report - 2024
• Updated Monitoring Well Location Plan - June 2024
  

Hanover

Fort Meade Shell Station

• Site Fact Sheet
• Report of Findings - January 8, 2013
• Community Notification Letter - January 23, 2013
• County Notification Letter - January 23, 2013  
• Preliminary Subsurface Environmental Site Assessment - July 3, 2013
• Work Plan Approval - October 29, 2013
• Request for Continued Monitoring - August 28, 2019 
  
• Request for Monitoring Well Installation - June 30, 2023 ​ 
• Site Monitoring Status Report - April 26, 2024
  

Millersville

Veterans - Najoles Site

• Site Fact Sheet
• Subsurface Investigation (June 2012) - August 19, 2013

Pasadena

Genie and Co. Inc. (aka Mountain Road Chevron)

• Site Fact Sheet
  

Baltimore City

ExxonMobil, Former Boston Street Terminal

• Consent Decree - November 8, 2007   
• 14th Street (Upper Zone) CAP Completion Report - August 4, 2008
• Lower Zone Corrrective Action Plan -September 10, 2009 
• Second Quarter Report - 2013 
• Janney Run Pilot Test Work Plan - September 2013
  

MTA Eastern Avenue Bus Facility

• Site Fact Sheet

Baltimore County

Baldwin

High's Store #98

• Site Fact Sheet
• Monitoring Well Supplemental Sampling Report - March 23, 2023
  
• Notification Letter to Baltimore County - April 7, 2023
  
• Community Notification Letter - April 21, 2023
• Drinking Water Sampling Report - July 28, 2023 
• Fourth Quarter Monitoring Well Sampling Report - 2023
  

Dundalk

Former Midway Gas Station

• Site Fact Sheet

• Off-Site Vapor Monitoring Point Installation/Sampling Events - August 28, 2013

Jacksonville

ExxonMobil

• Consent Decree Between State of Maryland and Exxon Mobil Corporation
  
• Site Fact Sheet
• ExxonMobil Interim Remedial Measures Plan - March 27, 2006
• Half (1/2) Mile Radius Map
• Preliminary Hydrogeologic and Contaminant Assessment Report - July 6, 2006 
  
  • Appendix A - Private Supply Well Records
  • Appendix C - Private Supply Well - Lab Analytical Results - Available Upon Request 
  • Appendix F - Groundwater Lab Analytical Reports - Available Upon Request 
  • Appendix G - Geophysical Survey Report - Available Upon Request 
  • Appendix I -  Slug Test Documentation - Available Upon Request 
  • Appendix J - Pumping Test Analysis
  • Appendix K - Soil Laboratory Analytical Reports - Available Upon Request 
  • Appendix L - Tank Excavation Assessment Report
  • Appendix M - Soil Gas Program Documentation - Available Upon Request 
• Discharge Permit Preliminary Impact Analysis Summary
• Groundwater Appropriations - June 13, 2007
• MDE Letter to Citizens - October 19, 2007
• Lineament Trace Analysis - April 18, 2008 
  
• Corrective Action Plan - January 2, 2009
  
• MDE Letter to Residents Regarding CAP - January 14, 2009
• SVE Pilot Test Report - April 20, 2009
  
• Proposed Modifications to Bottled Water Delivery & Private Supply Well Sampling Programs - January 15, 2010 
  • Attachment A - Analytical Table
• MDE Letter to Citizens - March 25, 2010  
• Water Appropriations Request - March 30, 2010  
• Water Supply Well Data - PGA Law Firm - April 28, 2010
  
• Near Northeast Area Supplemental Investigation and Remedial Measures Report - August 15, 2011 
  • Appendix P - Sample Results - Available Upon Request 
• Vertical Head Testing Report - September 14, 2011
  
• Near Northeast Area HydraSleeve Sampling & Hayes Transducer Data - August 31, 2012
  
• Evaluation Report MW-139 & MW-181B - October 4, 2012
• Community Update Letter and Map - January 31, 2013
  
• Site Status Letter - March 4, 2014
  
• Well Installation & Deepening Report for Nine Wells - February 21, 2014
  
• MDE Response to Well Installation & Deepening Report for Nine Wells - Hydrasleeve Sampling - April 8, 2014
  
• Well Installation Report for MW-73C and MW-186D - July 25, 2014
  
• Five-Year Corrective Action Plan Evaluation - August 25, 2014
  
• Bioreactor Shutdown Work Plan - April 6, 2015
  
• Response to SW and NE Sequential Well Conversion Summary Report and Remaining SW Well Rebound Assessment Work Plan - April 7, 2015
• Proposed Discontinuation of Bottled Water Delivery Program - July 23, 2015
  
• Private Supply Well Concentration Charts - December 17, 2015
• Annual Monitoring Well Concentration/Groundwater Elevation Charts - December 17, 2015
• Conceptual Site Model - July 15, 2016
• Proposed Modifications to Private Supply Well Sampling Program - July 21, 2016
• Monitoring Well Installation Work Plan - MW-189D - October 5, 2016
• Annual Monitoring Well & Private Supply Well Charts - December 22, 2016 
• Supply Well Investigation Work Plan - 3627A Southside Avenue - January 20, 2017
• Work Plan Approval - February 13, 2017
• Geophysical Investigation Report - May 16, 2017
• Groundwater Monitoring Reduction Proposal - Southwest Monitoring Area - May 23, 2017
• Near Northeast Optimization Work Plan - June 6, 2017
• Well Installation Report for MW-189D - June 22, 2017
• HydraSleeve Sampling Proposal - 3627A Southside Avenue Supply Well - July 20, 2017
• Discrete Zone Sampling Approval - August 14, 2017
  
• Near Northeast Optimization Work Plan Approval - August 24, 2017
  
• Approval of Southwest Groundwater Monitoring Reduction - December 6, 2017
• Proposed Modifications to Private Supply Well Sampling Program - December 8, 2017
  • Appendix A - Historical Analytical Tables for Properties Proposed for Retention
• First Quarter Potable Well and POET System Sampling Report - 2018
• Approval of Proposed Modifications to Private Supply Well Sampling Program - June 6, 2018
• Approval of Proposed Discontinuation of Bottled Water Delivery Program - June 6, 2018
• Community Update - June 14, 2018
• Report of Results:  Transducer Installation - Supply Well at 3627A Southside Avenue and Pumping Test - MW-189D - June 18, 2018
• Consent Order Between State of Maryland and Exxon Mobil Corporation - June 8, 2018
• Groundwater Monitoring Reduction and Well Abandonment Request - January 22, 2019
• Proposal for Natural Attenuation Evaluation - February 4, 2019
• Groundwater Monitoring Reduction and Well Abandonment Request - Addendum - March 11, 2019
• Initiation of Recovery from MW-73C and MW-82D - March 13, 2019
• Approval of Proposal for Natural Attenuation Evaluation - March 20, 2019
• Approval of Proposal for Natural Attenuation Evaluation - March 22, 2019
• Sequential Conversion of Select Wells Report of Results and Proposed Work Plan - March 25, 2019
• Approval of Groundwater Monitoring Reduction and Well Abandonment Request - March 29, 2019
• Approval of Initiation of Recovery from MW-73C and MW-82D - April 3, 2019
• MW-188D Packer Removal - Report of Results - April 5, 2019
• Single-Interval Sampling Work Plan - April 8, 2019
  
• Approval of Sequential Conversion of Select Wells Report of Results and Work Plan - May 24, 2019
• Approval of Single-Interval Sampling Work Plan and MW-189D Packer Removal Sampling - June 4, 2019
• Natural Attenuation Evaluation Report - July 25, 2019
• Part One
• Part Two​
• Proposal for Monitored Natural Attenuation Study - Addendum - September 26, 2019
• Approval for Monitored Natural Attenuation Study - October 25, 2019
  
• Recovery Well Conversion Report of Results and Work Plan - January 22, 2020
• Approval of Conversion of Dual Phase Extraction to Groundwater Extraction - April 21, 2020
• Approval of Monitoring Reduction and Well Abandonment - June 25, 2020
• Approval of Sequential Recovery Well Conversions - June 29, 2020
• Biosparge Pilot Test Report and Work Plan - July 30, 2020
• Biosparge MW-91C Approval - September 2, 2020
• Request to Stop Sampling Potable Wells - October 7, 2020
• Response to Request to Stop Sampling Potable Wells - January 25, 2021
• Remediation Progress Report and Rebound Test Work Plan - February 8, 2021
• Response to Rebound Test Work Plan - April 23, 2021
• Sequential Conversion of Select Wells Proposed Work Plan - May 26, 2021
• Approval of Sequential Recovery Well Conversions - June 16, 2021 
• Recovery Well Conversion Report of Results and Cycling Work Plan - December 14, 2021​ 
• Recovery Well Cycling Work Plan Approval - March 15, 2022
• Sampling Reduction, Well Abandonment, and Additional Cycling Work Plan - February 27, 2023 
• Addendum to Sampling Reduction, Well Abandonment, and Additional Cycling Work Plan - April 13, 2023 
• Phase 2 Recovery Well Cycling Report of Results and Request for Post-Operational Monitoring - July 31, 2023 
  
• Post Remediation Monitoring Plan Approval and Select Monitoring Well Abandonment Approval - December 19, 2023
• Community Update Letter from ExxonMobil - March 21, 2024
  
• Potable Supply Well Sampling Reduction Work Plan - June 11, 2024 
• Post Remediation Monitoring Sampling Requirements - August 29, 2024
• 3627A Southside Avenue Alternate Supply Well Proposed Well Design - September 18, 2024
• 3627A Southside Avenue Proposed Alternate Well Location Map - September 18, 2024 
• OCP Comments on the Craig Well Replacement Work Plan - November 25, 2024
• Fourth Quarter Groundwater Monitoring Report - 2024 
• MDE Response to Potable Supply Well Sampling Reduction Work Plan - February 18, 2025 
  

Kingsville

Fork Citgo

• Site Fact Sheet 
• Second Quarter Groundwater Sampling Report - 2015
  

Belko Corporation

• Site Fact Sheet
  
• Conceptual Site Model Report - April 14, 2010 
  
• Remedial Action Progress Report/Sub-Slab Soil Assessment - May 9, 2012
  
• Remedial Action Progress Report/October 2012 Excavation - December 4, 2012
  
• Conceptual Site Model Report - January 21, 2014
  
• Soil Sampling and Ecological Risk Assessment Work Plan - July 2014
  
• Third Quarter Update Report - 2015

Zink Construction

• Site Fact Sheet

Owings Mills

Stebbins Burnham Fuel Distribution Facility

• Site Fact Sheet
  
• Site Assessment Report - October 20, 2011

Parkton

High's #141 (Former Wally's Citgo)

• Site Fact Sheet
  
• Soil Boring Investigation - December 28, 2007
  
• Corrective Action Plan - February 26, 2009
• Directive Letter - May 28, 2009
• Corrective Action Plan - August 21, 2009
  
• Pumping Test Summary & Corrective Action Plan Addendum - June 29, 2011
  
• Preliminary Infiltration Gallery & Remedial System Design - August 24, 2011
  
• System Operation Summary Report - January 16, 2012
  
• Notice of Dispute Response Letter - March 6, 2014
  
• On-Site Remedial Activities Work Plan - Trial Shutdown - June 3, 2014
• Trial Shutdown Approval Letter - July 15, 2014
• On-Site & Off-Site Remedial Activities Summary - September 30, 2014
  
• Approval of System Modification - November 18, 2014
  
• Post-Remediation Evaluation Report - October 1, 2018
  
• Site Status & Modification to Residential Sampling Program - January 16, 2019
  
• Modifications to Residential Sampling Program & POET System Discontinuation Approval - June 4, 2019
• First Quarter Monitoring Report - 2024​​      
  

Phoenix 

Stansbury Mill Road Groundwater Investigation

• Site Fact Sheet
  

Randallstown

Charlie's Service Station

• Site Fact Sheet
• Notification Letter to Baltimore County - May 16, 2022
  
• Community Notification Letter - May 25, 2022
• Required Additional Activities - June 7, 2022​ 
  
• Potable Well Sample Locations - July 28, 2022 
  
• Recent Potable Well Sample Results Table - July 28, 2022​ 
  
• Request for Continual Supply Well Monitoring - December 20, 2022
• Fourth Quarter Sampling Report - 2024 
  

Rosedale

Royal Farms #64​

• Site Fact Sheet​
  
• Site Characterization Report -February 23, 2010
• Corrective Action Plan Draft - October 7, 2010 
• Focused Risk Assessment - Vapor Intrusion at 1207 Chesaco Avenue - April 27, 2012
  
• Approved Modification for Indoor Air Quality Testing - October 2, 2012
  
• Additional Monitoring Well Installation Report of Results - December 5, 2012
  
• Revised Corrective Action Plan Addendum - June 27, 2013
• Corrective Action Plan Addendum Response - May 29, 2013
  
• Request for Reduction in Indoor Air Quality Sampling - October 6, 2013
• Additional Monitoring Well Installation Report of Results - October 30, 2013
  
• Work Plan for Post Building Demolition Subsurface Investigation - 1205 Chesaco Avenue - November 11, 2013
• Work Plan Approval - January 30, 2014
• Post Building Demolition Subsurface Investigation - May 27, 2014
  
• Request for Trial Shutdown - November 19, 2014
  
• Rebound Evaluation Soil Investigation - January 11, 2018
• Case Closure Request - April 2019
• Request for Case Closure - June 2019
• Response to Case Closure Request & Continued Monitoring Requirements - March 4, 2020
• Monitoring Well Abandonment Request - March 13, 2020
• Remediation System Removal Request - March 13, 2020
  
• Approval of Select Monitoring Well Abandonment & Remediation System Removal - April 17, 2020
• Second Quarter Progress Report - 2022
  
• Third Quarter Progress Report - 2022 
  

 Towson

Hess/Yakona

• Site Fact Sheet
• Site Investigation Summary Report and Risk Assessment - August 4, 2011
• Indoor Air Sampling 1630 Yakona Road - December 16, 2011  
• Conceptual Site Model - January 25, 2013
  
• Site Investigation Summary Report and Risk Assessment - May 29, 2013
  
• Approval of Select Monitoring Well Abandonment - June 20, 2013
• Ridgely Manor Park Contingency Plan - January 21, 2014
• Contingency Plan Comments - April 2, 2014 
• Revised Ridgely Manor Park Contingency Plan - April 10, 2014  
• Approval of Revised Contingency Plan - May 6, 2014 
• Site Status Letter - October 23, 2014  
• Supplemental Site Status Letter - November 24, 2014 
• Corrective Action Plan Implementation Report - January 9, 2015
  
• Corrective Action Plan Addendum - December 27, 2018
• Corrective Action Plan Addendum - September 17, 2020 
• Approval of Corrective Action Plan Addendum - November 18, 2020 
• Third Quarter Status Report - 2021   
  

Carroll County 

Gamber

Groundwater Investigation

• Site Fact Sheet
• Plume Map
  

Manchester

Grave Run-Hoffmanville

• Site Fact Sheet
  

Westminster

Little George's

• MDE Request for Well Data - March 29, 2018
• MDE Response to Submittals - October 12, 2018 
  
• Response to Well Survey and Request to Sample Select Potable Supply Wells - July 9, 2019
• Potable Supply Well Sampling Event - August 2019
  
• Sampling Event - November 2019
• MDE Response Letter - May 6, 2020
• Sampling Event - June 2021
• Sampling Event - June 2022
• Sampling Event - June 2023 

7-Eleven Store #28924 (Taylorsville)

• Site Fact Sheet
  
• Annual Groundwater Compliance Sampling - July 30, 2024
• Groundwater Analytical Results with August 5, 2024 Confirmation Sampling
• Laboratory Analytical Data - August 6, 2024
• Notification Letter to Carroll County - August 13, 2024
• Community Notification Letter - August 23, 2024

Winfield

BP

• Site Fact Sheet
• Pilot Test Work Plan - September 9, 2010
  
• Quarterly Monitoring Report and System Shutdown Request - August 29, 2014
• Monitoring Well Sampling Report - October 2016
  
• ​Monitoring Well Sampling Report - January 2017 
• MDE Request for Continued Monitoring - September 10, 2018
  
• First Quarter Monitoring Well Sampling Report and Well Receptor Survey - 2019
• Fourth Quarter Monitoring Well Sampling Report and Request for Reduction of Sampling Requirements - November 25, 2019
• Second Quarter Monitoring Well Sampling Report, Request for Monitoring Well Closure and Diminished Sampling Requirements - June 24, 2021
• First Quarter Monitoring Well Sampling, Request for Case Closure, and Seven Risk Factors Report - June 8, 2023
  

Cecil County

Chesapeake City

Eagle's Nest / Chesapeake City Exxon

• Site Fact Sheet
• Half-Mile Radius Map
• Third Quarter Groundwater Samplng Report - 2022
  
• County Notification Letter - November 1, 2022
  
• Community Notification Letter - November 15, 2022
  
• Request for Enhanced Monitoring and Half-Mile Well Survey - November 15, 2022
• Report of Annual HRGUA Monitoring Well Sampling - 2023 
  

North East

Bayview Mobil

• Site Fact Sheet
  
• Corrective Action Plan - September 9, 2011
  
• Revised Corrective Action Plan - April 15, 2013
  
• Seven Risk Factor Analysis - July 30, 2013
• Injection Well Status & Response to Comments on Work Plan - August 28, 2013
• Response to Comments on Work Plan - December 10, 2013
  
• Second Quarter Groundwater Monitoring Report and Attenuation Analysis - August 2015
  
• Potable Well Sampling Results - 261 Old Bayview Road - December 13, 2018
  
• Work Plan for Area Potable Well Sampling - August 8, 2019
• Work Plan Approval - September 3, 2019 
• First Semi-Annual Groundwater Monitoring Report - 2022  
  

Calvert Country Store

• Site Fact Sheet
• Site Map
• Site Assessment Report - December 18, 2008
• Site Status Report - April 2010
  
• Pilot Test Work Plan - July 31, 2012
  
• Response to Request for Additional Pilot Testing Information - December 13, 2012
  
• Soil Vapor Sampling Report - April 16, 2013
• Corrective Action Plan - May 1, 2013
  
• Corrective Action Plan Addendum Letter - July 3, 2013
  
• Groundwater and Drinking Water Results - January 8, 2014
• Groundwater and Drinking Water Results - January 30, 2014
• Proposed Interim Measures - Off-Site Residences - February 19, 2014
• Remedial Measures Update - February 27, 2014
  
• Results of Additional Groundwater Investigation at Off-Site Residences and Request for MDE Approval of Continuing PIRM Implementation - June 24, 2014
  
• Fluid Levels Summary - August 8, 2014
  
• Documentation in Preparation for Regulatory Site Status Meeting - October 1, 2014
  
• Revised Scope of Work/Supplemental Work Plan - November 4, 2014
  
• Supplemental Investigation Report - June 8, 2015
  
• Response to Request for Ozone Pilot Testing and Full System Install Information - September 8, 2015
  
• Response to MDE Pilot Test Approval Letter - March 28, 2016
  
• Off-Site Ozone Treatability Bench-Scale Study - October 28, 2016
• Response to MDE Notice of Non-Compliance Letter - October 28, 2016
  
• Drinking Water Results and CAP Installation Update - February 3, 2017
• Drinking Water Results and CAP Installation Update - April 1, 2017
• Dual-Phase Extraction System Startup Summary - May 19, 2017
• Dual-Phase Extraction System Remedial Action Progress Report - June 22, 2017
  
• Dual-Phase Extraction System Remedial Action Progress Report - December 4, 2017
• Site Status Letter - Dual Phase Extraction Shut-Down and Off-Site Impacts - January 27, 2021
• Response to MDE Notice of Violation - March 31, 2021
• Combined Fourth Quarter Remediation and Groundwater Monitoring Report - 2022  
  

Royal Farms #96

• Site Fact Sheet
• Subsurface Investigation Work Plan - June 15, 2011
• Interim Monitoring and Recovery Well Installation Work Plan - June 28, 2011
• Request for Interim Corrective Action - June 29, 2011
• Emergency Subsurface Environmental Investigation - July 19, 2011
• Corrective Action Plan - July 22, 2011
• Corrective Action Plan Addendum - August 3, 2011
• Surfactant Flush Pilot Study Work Plan - August 9, 2011
  
• Receptor Survey Addendum - August 24, 2011
• Design Basis Summary Dual Phase Recovery System - September 13, 2011
• Groundwater Sampling Data Package - September 23, 2011
• Underground Storage Tank System Closure Report - October 17, 2011
  
• Dual Phase System Design Pilot Study Work Plan - October 27, 2011
• Bedrock Well Installation Work Plan - November 4, 2011
  
• Dual Phase System Design Pilot Study Report - January 31, 2012
  
• Recovery Well Installation Data Package - October 2011​
• Corrective Action Plan - Final - April 11, 2012
• Work Plan for Deep Well Discrete Groundwater Sampling - April 12, 2012
• Addendum to Work Plan for Deep Well Discrete Groundwater Sampling - September 17, 2012
• Well Abandonment Letter - September 26, 2012
  
• Well Gauging Data & Recovery Estimates Through October 10, 2012
• Well Gauging Data & Recovery Estimates Through October 31, 2012
• Well Gauging Data & Recovery Estimates Through November 26, 2012
• Vapor Extraction/Groundwater Extraction (VE/GE) System Initial Report - January 7, 2013
• VE/GE System Monthly Update Report - January 10, 2013
• Request for Removal of Control Devices Letter - January 21, 2013  
• Request for Change in Well Sampling Techniques - February 18, 2013
• VE/GE System Monthly Update Report - March 6, 2013
• Packer Testing Report - March 14, 2013
• Corrective Action Plan Addendum - March 28, 2013
• Packer Testing Report Addendum Letter - May 7, 2013
  
• HydraSleeve Standard Operating Procedures - October 6, 2013
• Request for Reduction in Supply Well Sampling - January 14, 2014
  
• Request for Trial Shutdown - November 19, 2014
• Request to Modify Sampling Requirements - Tank Pit Observation Wells - December 5, 2014
• Revised Rebound Evaluation Work Plan - April 20, 2015
• Rebound Evaluation - Month One - July 8, 2015
• Rebound Evaluation - Month Two - July 23, 2015
• Rebound Evaluation - Month Three - August 28, 2015
• Rebound Evaluation - Round Two - Months One and Two - November 3, 2015
• Rebound Evaluation - Round Two - Month Three - December 9, 2015
• Rebound Evaluation - Round Two - Month Four - January 8, 2016
• Rebound Evaluation - Round Two - Month Five - February 15, 2016
• Rebound Evaluation - Round Two - Month Six - March 4, 2016
• Rebound Evaluation - Round Two - Month Nine - June 21, 2016
• Rebound Evaluation Completion - October 20, 2016
• Rebound Study Soil Investigation Work Plan - February 7, 2017
  
• Request to Postpone Future Quarterly Sampling - January 11, 2018
• Request for Monitoring Well Abandonment - February 6, 2018
• Request for Case Closure - October 21, 2019
  
• Monitoring Reduction Approval Letter - January 28, 2020
  
• Semi-Annual Groundwater Monitoring Report - Second Half 2022  
  

Perryville

Exxon

• Site Fact Sheet
  
• Supplemental Site Assessment Report and Site Conceptual Model - December 21, 2011
  
• Potable Well Sampling Information for 1825 Perryville Road - April 4, 2012
  
• Subsurface Investigation Work Plan - September 14, 2012
  
• Supplemental Information for Subsurface Investigation Work Plan - November 30, 2012
  
• Supplemental Investigation Report - June 14, 2013
• UST Testing Records - September 23, 2013
  
• Sampling Reduction Request - March 21, 2014
• Potable Well Sampling Frequency Reduction Request - 1836 Perryville Road - April 23, 2019 
• Property Access Letter for Potable Well Sampling - 1836 Perryville Road - February 17, 2020
  
• Monitoring Reduction Approval Letter - April 7, 2021 
  
• Fourth Quarter Groundwater Monitoring Report - 2022​ 

Port Deposit

Winchester Village/Bullet Street

• Site Fact Sheet
  

Rising Sun

Pantry One Food Mart

• Site Fact Sheet
• Half Mile Radius Map​
• Informational Notification Letter to Residents/Property Owners within Half-mile Radius - June 19, 2019
• ​Petroleum Impact to Monitoring Well in a High Risk Groundwater Use Area-Letter to Cecil County Health Department - June 19, 2019​
• Request for Enhanced Monitoring and Half-Mile Well Survey - July 30, 2019
• Second Quarter Groundwater Sampling Report and Request for Sampling Frequency Reduction - 2020
• Request for Continued Monitoring - October 14, 2020
• Select Approval of Reduction in Monitoring Frequency - July 8, 2021
  
• Third Quarter Domestic Supply Well and Offsite POET Sampling Report - 2022
• Fourth Quarter Groundwater Sampling Report - 2023
  

Rising Sun Sunoco #0651-9128

Frederick County

Brunswick

CSX Transportation, Inc.

• Site Fact Sheet
  
• Well Installation Summary Report/Updated Site Conceptual Model - April 30, 2012
  
• Supplemental Investigation Work Plan - June 18, 2012
  
• Revised Supplemental Investigation Work Plan - October 12, 2012
  
• Well Installation Summary Report - March 8, 2013
  
• Supplemental Investigation Report and Revised Site Conceptual Model - April 18, 2013
• Supplemental LPH Delineation Work Plan - August 20, 2013
  
• Revised Supplemental LPH Delineation Work Plan - October 23, 2013
  
• Revised Site Conceptual Model Addendum 1 - November 26, 2013
  
• Pipe Replacement Work Plan - March 9, 2015
• Site Conceptual Model - Second Addendum - January 16, 2017
• Remedial Recovery and Monitoring Plan Approval - December 20, 2017
• Second Quarter Report - 2022
  

 Knoxville

Sheetz Store #176

• Site Fact Sheet
  
• Groundwater Sampling Reduction Request - February 24, 2014
• Quarterly Monitoring Report and Work Plan - December 2, 2014
  
• Approval of Sampling Reduction Request - March 17, 2015
• Site Status and Modifications to Sampling Program - December 18, 2018
  
• Fourth Quarter Groundwater Gauging and Potable Well Sampling Report - 2023   
  

Libertytown

Farmers and Mechanics Bank

• Site Fact Sheet
  

Monrovia

Green Valley Citgo   

• Residential Sampling Results Map
• Investigation Work Plan - May 6, 2008
• Monitoring Well Installation Report - June 20, 2008
• Hydrogeologic Investigation -June 5, 2009
• Update Report and Work Plan - March 15, 2010
• Pilot Test Work Plan - September 9, 2010
• Work Plan Approval - November 18, 2010
• Corrective Action Plan - March 15, 2011 
• Extended Pilot Testing Approval - June 1, 2011
  
• CAP Implementation Plan - July 1, 2011
• Approval of CAP Implementation and Extended Pilot Testing - August 24, 2011 
• Corrective Action Plan Approval - February 10, 2012
  
• In-Situ Chemical Oxidation System Operation Report - May 4, 2012
• Work Plan Approval - May 15, 2012
  
• ISCO System Operation Report - July 25, 2012
  
• Modification to the Corrective Action Plan - August 1, 2012
  
• ISCO System Comprehensive Summary & Update to the Conceptual Site Model - September 28, 2012
• Supplemental Chromium and Lead Investigation Summary - September 28, 2012
  
• Request to Revise the Monitoring Well Sampling Plan - May 22, 2013
  
• Revised Corrective Action Plan - January 31, 2014
  
• Green Valley/Monrovia Groundwater Investigation Results - May 2014
• Monitoring Well MW-18S Replacement Work Plan - October 27, 2014
• Fourth Quarter Monitoring Report with Data Trend Analysis and Revised Monitoring Plan - February 15, 2015
• Monitoring Well MW-18S Replacement Well Installation Report - March 17, 2015
• Site Status and Modifications to Sampling Program Letter - July 29, 2015 
  
• Approval for Monitoring Well Abandonment - October 27, 2015                       
• Request for Monitoring Reduction - October 21, 2016
  
• Addendum - First Quarter Monitoring Report - 2018
• Annual Remedial Evaluation Report - February 15, 2019
• Fourth Quarter Monitoring Report - 2024  
• Annual Remedial Evaluation Report - February 14, 2025

Green Valley Garage

• Site Fact Sheet
  
• Site Status Letter - December 5, 2014
• Third Quarter Monitoring Well Sampling Report - 2015
  
• First Semi-Annual Groundwater Monitoring Report - 2017

Mt. Pleasant

Barnes Store

• Site Fact Sheet

Myersville

Myersville Crown (Former Amoco/BP)

• Fourth Quarter Groundwater Monitoring Report - 2023 
• Notice of Compliance - December 26, 2024
• Site Status and Case Closure, Future Groundwater Monitoring - December 26, 2024

Lee Delauter & Sons, Inc.

Urbana

26463 Urbana Fuel and Treat (Sunoco)

• Site Fact Sheet

• Community Notification Letter - February 8, 2019
• Request for Enhanced Monitoring, Potable Well Sampling, and Half-Mile Well Survey - February 15, 2019
• Response to Request for Enhanced Monitoring, Potable Well Sampling, and Half-Mile Survey - March 29, 2019
• Third Quarter Groundwater Monitoring Report - 2023​ 

  Wolfsville

Harnes Store

• Site Fact Sheet
  
• First Quarter Drinking Water Laboratory Test Results - 2024
  

Harford County  

Bel Air

Bel Air Xtramart

• Site Fact Sheet
  
• Proposed CAP - Feasibility Study & Delineation Work Plan - June 30, 2011
  
• Potable Well Sampling Results - 2319 Churchville Road - September 9, 2011
  
• Corrective Action Plan - October 31, 2011
  
• Subsurface Investigation Report - April 30, 2012
  
• Supplemental Subsurface Investigation Work Plan - August 30, 2012
  
• Well Installation Work Plan - Additional Activities - March 6, 2013
  
• POET System Sampling Results - 1 Meadow Spring Drive - May 2, 2013
• Water Well Sampling Results - 7 Meadow Spring Drive - May 2, 2013
• Water Well Sampling Results - 9 Meadow Spring Drive - May 2, 2013
• Water Well Sampling Results - 10 Meadow Spring Drive - May 2, 2013
• Water Well Sampling Results - 2303 Churchville Road - May 2, 2013
• POET System Sampling Results - 1 Meadow Spring Drive - May 15, 2013
• POET System Sampling Results - 1 Meadow Spring Drive - July 9, 2013
• Discharge Monitoring Report (April - June 2013) - July 23, 2013
• Semi-Annual Withdrawal Report (January - June 2013) - July 23, 2013
• Work Plan Scope Change - August 26, 2013  
• POET System Sampling Results - 1 Meadow Spring Drive - November 6, 2013
• Water Well Sampling Results - 5 Meadow Spring Drive - November 6, 2013
• Water Well Sampling Results - 7 Meadow Spring Drive - November 6, 2013
• Water Well Sampling Results - 9 Meadow Spring Drive - November 6, 2013
• Water Well Sampling Results - 10 Meadow Spring Drive - November 6, 2013
• Water Well Sampling Results - 2303 Churchville Road - November 6, 2013
• Water Well Sampling Results - 2317 Churchville Road - November 6, 2013
• Water Well Sampling Results - 2319 Churchville Road - November 6, 2013
• Subsurface Investigation Work Plan - November 26, 2013
  
• Monitoring Well Installation Work Plan - Additional Information - April 7, 2014
• Notification of Termination of Air Stripper Operation Vacuum Enhanced Groundwater Extraction (VEGE) System - April 8, 2014  
• Work Plan Scope Change - July 2, 2014
  
• Discharge Monitoring Report (July - September 2014) - October 30, 2014 
  
• UST Removal Work Plan - November 8, 2016
• UST Removal Work Plan Addendum - November 17, 2016
• UST Removal Activities Report - January 19, 2017 
• UST Removal Activities Report Addendum - February 24, 2017
  
• Site Status and Modification to Sampling Letter - March 7, 2018
• Modification to Sampling Frequency and Request for Work Plan - February 15, 2019
• Horizontal and Vertical Delineation Work Plan - April 19, 2019
  
• Work Plan Approval - July 25, 2019
• Monitoring Well Installation and Downhole Geophysical Summary Report - February 21, 2020
• MDE Request for Additional Information - August 29, 2023
  
• Third Quarter Site Status Report - 2023  
• Delineation Monitoring Well Installation Work Plan - December 13, 2023
  

Churchville

High's Store #34 (Former Royal Farms #72)

• Site Fact Sheet
  
• Analytical Results - August 27, 2013
• Analytical Results - August 29, 2013  
• Analytical Results - November 20, 2013
  
• Analytical Results - December 27, 2013
• Analytical Results - January 14, 2014
• Analytical Results - February 24, 2014
• Analytical Results - April 2, 2014 
• Analytical Results - May 8, 2014
• Analytical Results - May 22, 2014
• Analytical Results - July 10, 2014
• Request for Reduction in Supply Well Sampling at 2907 Churchville Road - July 10, 2014 
• Analytical Results - August 7, 2014  
• Analytical Results - September 8, 2014
• Analytical Results - October 8, 2014 
  
• Second Quarter Sampling Report and Request for Reduced Sampling Requirements - 2020
• Request for Additional Information - September 9, 2020
• Third Quarter Report of Monitoring Well, Domestic Supply Well Sampling - 2023 
• Request for Release of the Requirement to Maintain POET System - October 18, 2023 
  

Darlington

Citgo

• Site Fact Sheet
  

Fallston

7-Eleven #22281

• Site Fact Sheet
  
• Bio-Augmentation Work Plan - February 4, 2008
• Letter from 7-Eleven - July 23, 2008
• UST Closure Report - December 2, 2008
• Corrective Action Plan - October 23, 2009
• Potable Well Survey - February 25, 2010
• Progress Report - March 5, 2010
• Revised Bio-Augmentation Pilot Test Work Plan - January 16, 2012 
  
• Bio-Augmentation Pilot Test Report - August 22, 2013 
• Site Conceptual Model - September 20, 2013
  
• Sampling Frequency Reduction Request - November 6, 2013 
• Revised Bio-Injection Testing - November 7, 2013
  
• Response to MDE Request for Supplemental Clarification - February 7, 2014 
  
• Well Abandonment Report - July 29, 2014 
  
• Additional Well Installation Work Plan - May 21, 2015 
  
• Third Quarter Monitoring and Sampling Report and Request to Reduce Sampling Parameters - October 21, 2016 
  
• Site Status Letter - April 18, 2017
• First Quarter 2019 Monitoring and Sampling Report and No Further Action Request - April 9, 2019
  
• Request for Continued Monitoring - May 28, 2019
• Third Quarter Monitoring and Sampling Report and Case Closure Request - October 30, 2020 
  
• Offsite Potable Well Investigation Results - May 27, 2021
• ​​Offsite Potable Well Investigation Results - Addendum - August 19, 2021
• Third Quarter Monitoring and Sampling Report - 2021
• Request for Monitoring Well Abandonment - January 26, 2022
• Monitoring Well Abandonment Report - April 5, 2022
• Site Status and Case Closure Letter - May 4, 2022
• Annual Groundwater Compliance Sampling Report - September 12, 2024 
  

Colonial Pipeline - Bel Air Pumping Station

• Site Fact Sheet
• Community Notification Letter - April 26, 2018
• Request for Additional Monitoring and Half-Mile Well Survey - May 15, 2018
• Subsurface Investigation Report - June 12, 2018
• Subsurface Investigation Report Amendment - July 12, 2018
  
• Subsurface Investigation Report Amendment II - October 15, 2018
  
• Groundwater Corrective Action Plan - December 5, 2018
  
• Monitoring Well Installation and Pilot Test Approval - February 26, 2019
• Remedial Investigation / Remedial Action Workplan - October 2019
• Work Plan Approval - November 22, 2019 
• Remedial Investigation / Remedial Action Work Plan - June 18, 2020
• Request for Additional Information - July 22, 2020
• Work Plan Approval - August 12, 2020
• Off-Site Monitoring Frequency Reduction Approval - August 12, 2020
• Response to Request for Additional Information - September 2, 2020
• Subsurface Investigation Report Amendment & Supplemental Drain/Purge Line Excavation Soil Sampling - September 29, 2021
• Subsurface Investigation Report - Aboveground Valve Release - October 20, 2021
• Quarterly Monitoring Report - February 2022 - April 2022​
  

Service Center

• Site Fact Sheet
  
• Site Sampling Survey
• MDE's Complaint and Order
• Transmittal Letter - April 24, 2008 
• First Quarter Sample Results - March 6, 2008
  

Jarrettsville

Fruhling Store

• Site Fact Sheet
  

High's Dairy Store #86

• Site Fact Sheet
• Half Mile Radius Map
• County Notification Letter - November 24, 2020 
• Community Notification Letter - December 2, 2020 
• Request for Enhanced Monitoring and Half-Mile Well Survey - January 27, 2021​ 
• Interim Monitoring Report for Event Completed December 22, 2020 - February 19, 2021
  
• Sensitive Receptor Survey Report - April 9, 2021​ 
• Fourth Quarter Monitoring Report - 2023
  

Madonna

High's #130

• Site Fact Sheet
  
• Drinking Water Supply Well Sampling Report - 3922 Greenpeak Road - August 1, 2011
• Request for Meeting Letter Regarding 3914 Madonna Road - August 18, 2011
• GAC Treatment System Service Event - 3914 Madonna Road - September 7, 2011
• Request to Reduce Supply Well Sampling Frequency - September 14, 2011  
• Request for Case Closure and Semi-Annual Monitoring Wells & Domestic Well Sampling Report - January 2012​
  
• Water Filtration System Sampling Information - 3914 Madonna Road - March 28, 2014
• Potable Well Sampling Results - 3921 Greenpeak Road - March 28, 2014
• Potable Well Sampling Results - 3922 Greenpeak Road - March 28, 2014
• Potable Well Sampling Results - 3922 Madonna Road - April 10, 2014
  
• Second Quarter Resident Result Letters - June 12, 2014
• Potable Well Sampling Results - 3921 Greenpeak Road - July 8, 2014
• Water Filtration System Sampling Information - 3914 Madonna Road - September 10, 2014
• Potable Well Sampling Results - 3921 Greenpeak Road - September 10, 2014
• Point of Entry Treatment (POET) System Installation - 3921 Greenpeak Road - October 10, 2014
• Potable Well Sampling Results - 3922 Greenpeak Road - October 13, 2014
  
• Potable Well Sampling Results - 3908 Madonna Road - November 18, 2014
• Sampling Results - December 19, 2014
• Potable Well Sampling Results - 3919 Madonna Road - December 23, 2014
• Water Filtration System Sampling Information - 3921 Greenpeak Road - December 31, 2014
• Water Filtration System Sampling Information - 3921 Greenpeak Road - February 13, 2015
• Site Investigation Work Plan - February 24, 2015
• Potable Well Sampling Results - 3908 Madonna Road and 3922 Greenpeak Road - March 4, 2015
• Water Filtration System Sampling Information and Potable Well Sampling Results - May and June 2015
• Site Investigation Report - September 11, 2015
• Sampling Results - December 16, 2015
• Revised Sampling Results - December 16, 2015  
• First Quarter Resident Sampling Result Letters - 2016
• Residential Sampling Results - May 20, 2016
  
• Water Filtration System Sampling Information - 3914 Madonna Road - August 30, 2016
• Water Filtration System Sampling Information - 3921 Greenpeak Road - August 30, 2016
• Potable Well Sampling Results - 3922 Greenpeak Road - August 30, 2016
• Water Filtration System Sampling Information - 3914 Madonna Road - November 18, 2016
• Water Filtration System Sampling Information - 3921 Greenpeak Road - November 18, 2016
• Potable Well Sampling Results - 3922 Greenpeak Road - November 18, 2016
• Second Semi-Annual Monitoring and Conceptual Site Model Report - 2016
  • Appendix A - Laboratory Reports
• Water Filtration System Sampling Information - 3914 Madonna Road - February 13, 2017
• Water Filtration System Sampling Information - 3921 Greenpeak Road - February 13, 2017
• Potable Well Sampling Results - 3922 Greenpeak Road - February 13, 2017
• Potable Well Sampling Results - 3922 Madonna Road - February 13, 2017
• Potable Well Sampling Results - 3908 Madonna Road - March 9, 2017
• Water Filtration System Sampling Information - 3914 Madonna Road - May 23, 2017
• Water Filtration System Sampling Information - 3921 Greenpeak Road - May 23, 2017
• Potable Well Sampling Results - 3922 Greenpeak Road - May 23, 2017
  
• Water Filtration System Sampling Information - 3921 Greenpeak Road - November 19, 2018
• Potable Well Sampling Results - 3922 Greenpeak Road - November 19, 2018
  
• Request for Release of POET Maintenance Responsibility - 3914 Madonna Road - January 10, 2020  
• Request for Case Closure Report - March 8, 2024
  
• First Semi-Annual Monitoring Report - 2024  
  

Howard County

Lisbon

Area Groundwater Investigation

• Site Fact Sheet   

Kent County

Chestertown

Shore Regional Health (Formerly Chester River Hospital Center)

• Dissolved Oxygen Injection Pilot Test Results - September 30, 2011
• Letter from Chester River Hospital Center - March 26, 2012
• Pre-Shutdown Sampling Report - July 2012
• MDE Post-Remedial Monitoring Modifications Letter - September 5, 2012
• MDE Referral Letter to Mayor Bailey - October 4, 2012
• MDE Request for Clarifications Letter - October 25, 2012  
• Groundwater Remediation Action Plan Cover Letter - July 17, 2013
• Groundwater Remediation Action Plan - July 17, 2013
• MDE Memo Comments to the Groundwater Remediation Action Plan - August 2, 2013
• Revised Groundwater Remediation Action Plan - September 11, 2013
  • Transmittal Sheet
  • Cover Letter
  • Revised Groundwater Remediation Action Plan Text
  • Contour Map
  • Proposed Treatment Wells
  • Map
  • Smear Zone Determination
  • Ivy-sol MSDS Sheet
  • Lab Reports - August 2013
• MDE Groundwater Remediation Action Plan Approval Letter - October 17, 2013
• MDE Revised Groundwater Remediation Action Plan Approval Figure - October 17, 2013
• Letter from the Town of Chestertown - October 23, 2013
  
• Chestertown Letter to MDE - November 5, 2013
• MDE Responses to Questions Letter and Documents - March 25, 2014  
• Chestertown Concerns About Hospital's Ivey-Sol Pilot Test Plan - May 9, 2014 
  
• Groundwater Remediation 2013/2014 Action Plan Modifications - June 26, 2014
  
• Modified Pilot Test Approval - July 25, 2014
• Pilot Test Evaluation Report and Proposed 2015 Action Plan - January 19, 2015
  
• Chestertown Concerns About Hospital's Ivey-sol Implementation Plan - March 4, 2015
  
• Comments to Pilot Test Evaluation Report and Proposed 2015 Action Plan - March 27, 2015
  
• Proposed 2015 Action Plan Response Letter - April 24, 2015
  • Appendix
• Chestertown Concerns about the University of Maryland Shore Medical Center at Chestertown's Ivey-sol Implementation Plan - May 4, 2015
• MDE Response to Town Letter - July 9, 2015
• Chester River Hospital 2015 Proposed Action Presentation - July 14, 2015
  
• Approval for Revised 2015 Action Plan - July 22, 2015 
  
• Letter to Mayor - January 21, 2016
• Request for Subsurface Investigation Work Plan - March 23, 2016
• Response to Request for Subsurface Investigation Work Plan - March 30, 2016  
• Supplemental Subsurface Investigation Work Plan - April 18, 2016
• Work Plan Approval - May 9, 2016
• Settlement Agreement and Consent Order - May 17, 2016
• Groundwater Remediation Action Plan Summary Report 2015 - 2016
  • Cover Letter
  • Report
  • Appendix 1
  • Appendix 2
  • Appendix 3
  • Appendix 4
  • Appendix 5
  • Appendix 6
  • Appendix 7 - Available Upon Request
  • Appendix 8 - Available Upon Request
  • Appendix 9
  • Appendix 10
  • Appendix 11 
• Supplemental Subsurface Investigation Report - 2016
  • Attachments
• Amended Third Quarter Monitoring Report - 2017 (silica gel cleanup discussion)
• Monthly Monitoring Report - November 2016
• MDE Site Status Letter - December 20, 2016 
  
• Pilot Post-Remedial Monitoring Request Letter - February 25, 2020
• System Shut-Down and Post-Remedial Monitoring Approval - April 24, 2020
  
• Pilot Post-Remedial Monitoring Request Work Plan MDE Comments - June 17, 2020
• Letter from Mayor Cerino - August 3, 2020
• MDE Letter to Chestertown - August 28, 2020
• Natural Attenuation Monitoring Requirements - September 9, 2020
• Letter from Mayor Cerino - September 10, 2020
• Response to Mayor Cerino's Letter - September 11, 2020
• Letter from Mayor Cerino - September 21, 2020
• Initial Recommended Enhancements/Optimization for Groundwater Containment System - September 21, 2020
• Alleged Violations of Settlement Agreement and Consent Order - October 15, 2020
• Hospital Settlement Acceptance - October 19, 2020
• MDE Response to Questions - November 10, 2020
• Shore Regional Health Presentation - November 20, 2020 
• Request to Discontinue Pumping and begin Post-Remedial Monitoring Program - March 18, 2021​ 
• Request for Comments - April 15, 2021​ 
• Letter from the Town of Chestertown - May 10, 2021​ 
• Shore Regional Health Response to Town of Chestertown Letter - June 16, 2021​ ​ 
• Pilot Pumping System Shutdown Work Plan - February 4, 2022
• Town of Chestertown Response to Post-Remedial Pilot Work Plan - March 7, 2022
• Pilot Pumping System Shutdown Approval - April 1, 2022
• Limited Subsurface Investigation Report - September 23, 2022
• Third Quarter Groundwater Monitoring Report - 2022
• 2023 Groundwater Sampling and Analysis Plan - November 30, 2022
• Letter from the Town of Chestertown - December 20, 2022
  
• 2023 Groundwater Sampling and Analysis Plan Approval - February 2, 2023
  
• Letter from the Town of Chestertown - February 8, 2023
  
• MDE Response Letter to Chestertown - April 4, 2023 
• Closure Assessment Report - March 4, 2025
  

Montgomery County

Silver Spring

Cloverly Shell

• Site Fact Sheet
• Site Investigation Update - September 30, 2004
• CAP Addendum - November 25, 2009
• Shell Cloverly Public Meeting - 2/22/10
• Presentation 
• Additional Information
  
• Well Installation Report - September 4, 2012
  
• Well Installation Report with Site Map and Well Construction Diagram - February 21, 2013 
  
• Draft Corrective Action Implementation Summary Report - October 3, 2014
  
• Site Information Update and Groundwater Sampling Reduction Request - August 11, 2017
  
• Work Plan Revision - December 2018
• Work Plan Revision Approval - October 4, 2019 
  
• Six-Month Groundwater Sampling Results and Summary - May 29, 2020
  
• Work Plan for Well Redevelopment & System Operation - November 10, 2021
• Work Plan Revision Approval - March 8, 2022
• Approval of Monitoring/Recovery Well Conversion - July 18, 2023
  
• Fourth Quarter Status Report - 2024

For Further Information

Oil Control Program
(410) 537-3442; (800) 633-6101 x3442

To Report Oil Spills Call (Available 24 hours a day)
1-866-633-4686​​​​​