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HomeMy WebLinkAboutChauncy St. #189 -2006-2010Groundwater & Environmental Services, Inc. 364 Littleton Road -Suite 4 -Westford, Massachusetts 01886 - (800) 221-6119 -Fax (978) 392-8583 June 71 201�O Mr, Ray Martin Chairman, Board of Health Town of Mansfield 6 Park Row Mansfield, Massachusetts 02048 RE: Phase W, Remedy Implementation Plan (RIP) J —Mobil Statio"o.-1-004 (01-731) 189 Chauncy Street — 'Mansfield Massachusetts MADEP Site No. 4-19836 Dear Mr. Martin: Groundwater & Environmental Services, Inc. (GES) has been retained by ExxonMobil Enviromnental Services Company on behalf of Exxon Mobil Oil Corporation (ExxmlMobil), to inform you that a Phase IV Remedy Implementation Plan (RIP) has been prepared for the above referenced site. The report will be submitted to the Massachusetts Department of Environmental Protection (MADEP) Southeast Regional Office in Lakeville, Massachusetts. You may view the document after this date by going to the MADEP website (http://public.dep.state. ma.us/wsc—viewer/main.aspx) referencing Site No. 4-19836. In accordance with the requirements of Section 310 CMR 40.1403(3)(a) and (3)(e) of the Massachusetts Contingency Plan (MCP), notification for the Phase IV RIP submittal requires that a summary of the purpose, nature and expected duration of the field activities related to the implementation of the Phase IV remedial actions and a description of the Comprehensive Remedial Action be provided to local officials. Copies of relevant sections of the Phase IV RIP discussing conceptual plan of the remedial activities and control measures to avoid uncontrolled impact to the environment are provided as attachments to this letter. If you have any questions regarding this letter or wish to receive a full copy of this report, please contact the undersigned at (800) 221-6119. Sincerely, SERVICES, INC. Attachments Manager cc: MADEP — Southeast Regional Office Environmental Solutions and Liability Management 3.2 Engineering Design [310 CMR 40.0874(3)(b)] 3.2.1 Remedial Action Goal The goal of the remedial action at the site is to reduce groundwater concentrations of petroleum hydrocarbons to levels below the applicable MCP Method 1 standards, and if feasible, to levels that approach or achieve background as required by the MCP. Since volatile organic compounds (VOCs) contained in petroleum are not naturally -occurring compounds, the background concentrations of VPH compounds are assumed to be equivalent to analytical detection limits. The proposed remedial action alternative, natural attenuation enhanced with in -situ bioremediation through injection of hydrogen peroxide in a localized area, if warranted, is expected to reduce petroleum hydrocarbon concentrations at the site to levels below applicable MCP Method 1 standards and approach background levels, thus achieving a Permanent Solution. 3.2.2 Significant New Information Not Previously Submitted Quarterly groundwater gauging and sampling events were conducted as part of evaluation of site conditions for potential site closure. Since the submittal of the Phase III RAP, groundwater gauging and salpling of select monitoring wells including MW-2, MW-8, MW-10, MW-1013, MW-100, MW-101, MW-102, OW-1, OW-2, OW-3, OW-4, OW-5, OW-6 and OW-7 was conducted at the site on July 22, 2009, October 16, 2009, January 18, 2010 and April 16, 2010. Based on groundwater data provided in the Phase II CSA, groundwater flow was determined to be to the south, which is consistent with the flow direction indicated by recent groundwater sampling events. A summary of groundwater analytical data is provided in Tables 3 and 4. Groundwater analytical results from monitoring events conducted since the submittal of the Phase III RAP, indicate that concentrations are below the applicable MCP Method I GW-1 and/or GW-2/3 standards or below the laboratory detection limit with the exception of one or more VPH fractions identified in the groundwater samples collected from monitoring well MW- 101, where the detected concentrations remain above the Method 1 GW-1 groundwater standards. Given that petroleum hydrocarbon concentrations in groundwater samples collected from the downgradient most wells at the disposal site (OW-5, OW-6 and OW-7) have been below the laboratory detection limit since the first sampling event in December 2008, GES believes that groundwater impacts from the site are primarily localized to the area south of the dispenser islands 9/10 in the area of monitoring well MW-101. A summary of the natural attenuation bioparameters is provided in Table 6. The groundwater laboratory analytical reports for the previously mentioned groundwater sampling events are attached as Appendix A. As indicated in Table 6, DO concentrations were generally lower in the wells located with the petroleum impacted area, i.e, those within the contaminated groundwater plume. The ORP concentrations were inconclusive. The relatively low DO concentrations combined with the apparent overall decrease in VPH concentrations indicate that natural attenuation is occurring, however, additional testing will be performed to confirm this trend. GROUNDIVA TER & ENVIROMAENIAL SERVICES, 1NC . Page 14 of 23 Mobil Service Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 3.2.3 Description of Environmental Media to be Treated Petroleum hydrocarbon concentrations are present in groundwater and soil within the overburden aquifer at concentrations that exceed applicable MCP Method 1 standards in the area downgradient of dispensers 9/10 in the area of monitoring well MW-101. Monitoring well MW- 101 is the only well at the site in which groundwater impacts exceed applicable (GW-1) standards. Groundwater samples collected from the other monitoring wells did not identify any detectable concentrations of petroleum hydrocarbons above applicable MCP Method 1 GW-1 and/or GW-2/3 standards, as previously discussed in Section 2.0. Monitored natural attenuation will be used to address the residual impacts within the overburden aquifer, however, if natural attenuation does not indicate decreasing concentrations within the overburden aquifer, then in -situ bioremediation through injection of hydrogen peroxide will be implemented to address the overburden aquifer in the vicinity of MW-101. Soil samples that exhibit concentrations that exceed applicable MCP S-1/GW-2 Soil Standards (SB08-2, SB08-4 and S1308-5, all collected at the 12-14 foot interval) were collected below the water table. Because the soil samples were saturated, the concentrations potentially do not accurately represent soil contamination but rather soil containing contaminated groundwater. Thus remediation of groundwater should also remediate the "soil" exceedances. The historic soil borings are located in the vicinity of monitoring well, MW-101, the only well at the Site that currently exhibits concentrations above the applicable MCP Method I GW-1 Groundwater Standards. When compliance with GW-1 criteria is demonstrated at MW-101, confirmatory soil sampling will need to be performed at locations SB08-2, SB08-4 and SB08-5 and only collected at the 12-14 foot interval, and analyzed for the criteria that exceeded standards. 3.2.4 Description of Selected Remedial Action Alternative The Phase III RAP was submitted by GES to the MassDEP in June 2009, selecting monitored natural attenuation as the preferred remedial alternative, with the implementation of in -situ bioremediation through hydrogen peroxide injection as a second step measure if groundwater concentrations in the overburden did not indicate decreasing trends. Monitored Natural Attenuation The alternative is anticipated to be capable of keeping current concentrations of petroleum hydrocarbons in groundwater to levels of No Significant Risk and approach background concentrations for the majority of the site. The remedial alternative is expected to reduce risk at the site to levels that are consistent with the goals of the MCP and foreseeable use for the site. While this remedial approach will potentially require a relatively longer period to be effective, the limited area of impact, the absence of a completed pathway to sensitive receptors, the relative immobility of the plume, and the decreasing or stable concentrations justify the selection. GROUNDIVATER & ENVIRONAAENTAL SERVICES, INC. Page 15 of 23 Mobil Smice Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 Hydrogen Peroxide Injection If the current groundwater concentrations in monitoring well MW-101 do not indicate a decreasing trend, GES has evaluated the potential for implementing the injection of chemical additives, such as hydrogen peroxide into the overburden aquifer at the site. Hydrogen peroxide injection will be used to both chemically oxidize the petroleum compounds ("in -situ chemical oxidation" or "ISCO") and also to accelerate the process by which naturally occurring bacteria degrade petroleum hydrocarbons in the soil and/or groundwater by increasing dissolved oxygen in groundwater (DO) and thus promote aerobic biological decomposition of residual petroleum hydrocarbons. This technology is well suited for the remediation of dissolved -phase petroleum constituents that have or may potentially migrate. Oxygenation of the subsurface is accomplished by adding chemical additives (hydrogen peroxide) to groundwater. 3.2.5 Relevant Design and Operation Parameters Monitored Natural Attenuation Analysis of groundwater data (Tables 3 and 4) has shown a generally decreasing or stable trend of petroleum hydrocarbon concentrations in groundwater since 2006, with the exception of one or more VPH carbon fraction concentrations within monitoring well MW-101, which have been detected above the applicable MCP Method I GW-1 standards. There are no other compounds that exceed the applicable MCP standards in the remaining site monitoring wells, and no equivalent increases in benzene, toluene, ethylbenzene, xylenes, or naphthalene have been observed, suggesting that a new release has not occurred at the site. Furthermore, as indicated in Table 6, initial sampling for bio-parameters confirmed that natural attenuation is generally occurring at the site. Based on the available data, for the majority of the site, it is concluded that the groundwater concentrations are not migrating, are relatively stable, and are generally decreasing, indicating that natural attenuation is occurring and will continue to decrease concentrations in impacted groundwater. Furthermore, given the lack of sensitive receptors at the site and in the vicinity, natural attenuation is applicable for this site. In order to monitor the continuance of natural attenuation at the site, groundwater will continue to be monitored at the site at a minimum on a semi-annual basis. Details of the groundwater monitoring program are further described in Section 3.4. Hydrogen Peroxide Injection Field bio-parameters were collected on December 12, 2008, January 20, 2009 and May 19, 2010 from selected monitoring wells to confirm that bio-remediation via hydrogen peroxide is feasible for the site. Based on current site conditions (lithology, groundwater gradient, constituent distribution, etc.) and given the relatively low dissolved oxygen levels in monitoring well MW- 101 hydrogen peroxide injection is a feasible remedial approach. A summary of the field bio- parameters testing results are provided in Table 6, which indicates justification of the validity of hydrogen peroxide injection at the site. GROUNDIIIATER & E+NVlRONAIENTAL SERVICES, INC, Page 16 of 23 Mobil Service Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 Based on additional data collected subsequent to the submittal of the Phase III report, GES believes that NINA alone may be sufficient to achieve a permanent solution at this site. However, the possibility remains that the use of remedial additives (specifically hydrogen peroxide injection) may still be determined useful to augment or supplement MNA in achieving a permanent solution. Accordingly, GES is retaining the hydrogen peroxide injection remedial action alternative as a contingency, but does not propose implementing hydrogen peroxide injection at this time. In the future, if GES determines that hydrogen peroxide injection is appropriate, GES will design a pilot trial to finalize the engineering design for the hydrogen peroxide injection, and will submit a final design for such injections in a Phase IV RIP Addendum. For either a pilot test or full-scale injection of hydrogen peroxide, GES has designed, engineered and operates a mobile, trailer -mounted, in situ chemical oxidation system that can direct relatively high flow rates of hydrogen peroxide and air into existing site monitoring wells and/or injection points to remediate dissolved -phase constituents in groundwater and/or constituents adsorbed to saturated subsurface soils. The mobile chemical oxidation system is powered via an on -board generator. Quick -connect hoses are used to connect selected existing monitoring wells to the hydrogen peroxide and air injection trailer. The monitoring wells serving as injection points will be fitted with a pressure gauge, pressure regulating valve, and/or ball valves, as appropriate, for air and hydrogen peroxide injection. A check valve will be installed at each well selected for hydrogen peroxide injection to prevent backflow of liquids. The wellhead assemblies will be installed so that GES field personnel can readily make necessary adjustments during the routine injection events. 3.2.6 Design Control Features Monitored Natural Attenuation This section is not applicable for natural attenuation. Hvdroeen Peroxide Injection Prior to performing a hydrogen peroxide injection pilot test, GES will conduct a baseline groundwater sampling event to establish pre -injection conditions for hydrogen peroxide at the site. Included in this analysis will be monitoring of hydrogen peroxide concentrations through the use of a field titration kit. Samples of groundwater will be collected and an indicator added. A neutralizing solution will then be added and based on the solution concentration required to achieve neutralization, the concentration of hydrogen peroxide can be inferred. During the injection(s), dissolved oxygen (DO) concentrations, groundwater temperature, oxidation reduction potential (ORP), pH and conductivity will be measured and recorded on an approximate hourly basis daily basis during the injection from nearby existing observation wells and injection wells. Post -injection groundwater monitoring will be performed as discussed in Section 3.4 to monitor potential effects of the hydrogen peroxide, to confirm that no compounds build up in the subsurface that could have a negative effect on the indigenous organisms, and to document when natural subsurface conditions have returned to pre -injection levels prior to completion of the remedial activities. GROUATDiT'ATER & EMQRONAIENTAL SERVICES, INC. Page 17 of 23 Mobil Service Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 Hydrogen peroxide can be very safe to use as long as qualified individuals are involved in its handling. Spills or direct contact could prove hazardous in situations where concentrated hydrogen peroxide is used or handled. However, for the proposed applications, dilate hydrogen peroxide solution (8-9% by volume) is unlikely to present a hazard to those handling the hydrogen peroxide or to area residents. The dilute solution, slightly more concentrated than the "over-the-counter" 3% solution sold in drugstores for topical application to human skin, is also unlikely to generate significant heat or vapors in the subsurface, and these conditions will be actively monitored during implementation. The local Fire Department will be notified in advance if temporary storage of hydrogen peroxide at the disposal site during multi -day events is planned. 3.2.7 Waste Management No remedial waste is generated during the implementation of natural attenuation. In general, no remedial waste is anticipated to be generated during the implementation and operation of the proposed in situ injection of hydrogen peroxide. Any waste generated during preparation of the hydrogen peroxide mixture and/or during cleaning of injection equipment will be stored in 55-gallon drums and disposed of in accordance to applicable regulations. Residual hydrogen peroxide in the manufacturer's drums, mixing tank, injection piping and/or any other equipment will be sufficiently flushed with water, and which diluted hydrogen peroxide solution will then be injected into an approved chemical oxidation injection well. Soil could potentially be generated during drilling activities conducted in support of the selected remedial alternatives. Soil is typically stored in labeled 55-gallon steel drums and subsequently removed by a licensed disposal contractor under a Uniform Hazardous Waste Manifest. Solid waste such as used personnel protection equipment (PPE) empty hydrogen peroxide containers will generally be disposed of off -site as regular solid waste, unless the waste contains free -liquid and/or meets the definition of a hazardous waste. No other waste is anticipated to be generated during the hydrogen peroxide injection events 3.2.8 Identification of Site -Specific Characteristics Affecting Design Monitored Natural Attenuation The Mobil Station property is currently active as a retail gasoline service facility. Currently, there are no applicable site -specific characteristics that affect the implementation of natural attenuation. As described in the Phase III RAP, site -specific characteristics such as low levels of petroleum hydrocarbon impacts remaining in groundwater indicate that natural attenuation is already close to achieving a condition of No Significant Risk in the foreseeable future. Groundwater concentrations in the vicinity downgradient of the dispensers (MW-101) are currently above the applicable MCP standards and will continue to be compared to applicable MCP Method 1 groundwater standards. GROUNDWATER & ENVIRONUENTAL SERVICES, INC. Page 18 of 23 Mobil Service Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 Hvdrogen Peroxide Iniection Site -specific characteristics affecting design include site lithology, depth to groundwater, and location of impacted soil and groundwater. These factors were identified during Phase II field activities and were incorporated into the selection of the proposed remedial alternatives. Because of the variability and inherent uncertainty of site -specific subsurface conditions, if it is determined that hydrogen peroxide injection is appropriate, GES must conduct an initial pilot trial of such an injection, in order to determine the final design parameters for a full-scale injection. If hydrogen peroxide injection is determined to be appropriate, GES will submit a Phase IV RIP Addendum describing the pilot trial design and activities. 3.2.9 Environmental Impact Mitigation Measures There are no impacts to the environment anticipated to be caused by the implementation of an active remedial program of monitored natural attenuation. No adverse environmental impact is expected to occur in the event that in situ chemical oxidation using hydrogen peroxide injection is utilized at the site. However, if hydrogen peroxide injection is determined to be appropriate and a pilot trial is implemented, a monitoring and sampling program will be implemented at the site to observe the dispersion of the hydrogen peroxide and to document the progress of remediation and the amount of any residual hydrogen peroxide that would remain in the environment at the site. 3.3 Construction Plans and Specification (310 CMR 4O.O874(3)(c)) This section is not applicable for natural attenuation. As discussed above, hydrogen peroxide injection is not contemplated at this time. If hydrogen peroxide injection is contemplated, a Phase IV RIP Addendum shall be submitted with further details. Follow up sampling to determine the effectiveness of the event and the need for subsequent events will be performed in accordance with the monitoring plan in Section 4.4.4. 3.3.1 Schedule for Design and Construction Monitored Natxrrai Attenzration This section is not applicable for natural attenuation. Hydrogen Peroxide In'ecl Lion As discussed above, hydrogen peroxide injection is not contemplated at this time. If hydrogen peroxide injection is contemplated, a Phase IV RIP Addendum shall be submitted with further details. GROUNDI PATER & ENI'IRONMENTAL SERIQCES, INC. Page 19 of 23 Mobil Service Station No. 01-731, Mansfield, MA Phase IV Remedial Implementation Plan & Final Inspection Report 6/7/2010 �\ COMMONWEALTH OF MASSACHUSETTS EXECUTIVE OFFICE OF ENVIRONMENTAL AFFAIRS DEPARTMENT OF ENVIRONMENTAL PRO ' 1 SOUTHEAST REGIONAL OFFICE �v 20 RIVERSIDIPIDRIVE, LAK 'h{'.r�i,, 46- i�MITTROMNEY STEPHEN R. PRITCHARD Governor JUL (9 ���( Secretary KERRY HEALEY ROBERT W. GOLLEDGE, Jr. Lieutenant Governory Commissioner URGENT LEGAL MATTER: PROMPT ACTION NECESSARY July 12, 2006 ExxonMobil Corporation RE: MANSFIELD -BWSC 52 Beacham Street' �� �189 Chauncy Street Everett, MA 02149 RTN# 4-19836 NOTICE OF RESPONSIBILITY M.G� c. 21E, 310 CMR 40.0000 ATTENTION: Elizabeth Zinkevicz, Regional Engineer On June 6, 2006 at 12:55 PM the Department of Environmental Protection ("MassDEP ") received oral notification of a release and/or threat of release of oil and/or hazardous material at the above referenced property which requires one or more response actions. A distribution line from an underground gasoline storage tank failed a line tightness test. The Massachusetts Oil and Hazardous Material Release Prevention and Response Act, M.G.L. c,21E, and the Massachusetts Contingency Plan (the "MCP"), 310 CMR 40.0000, require the performance of response actions to prevent harm to heflth, safety, public welfare and the environment which may result from this release and/or threat of release aifd govern the conduct of such actions. The purpose of this notice is to inform you of your legal responsibilities under State law for assessing and/or remediating the release at this property. For purposes of this Notice of Responsibility, the terms and phrases used herein shall have the meaning ascribed to such terms and phrases by the MCP unless the context clearly indicates otherwise. MassDEP has reason to believe that the release and/or threat of release which has been reported is or may be a disposal site as defined by the M.C.P. MassDEP also has reason to believe that you (as used in this letter, "you" refers to ExxonMobil Corporation) are a Potentially Responsible Party (a "PRP") with liability under M.G.L. c.21E §5, for response action costs. This liability is "strict", meaning that it is not based on fault, but solely on your status as owner, operator, generator, transporter, disposer or other person specified in M.G.L. c.21E §5. This liability is also "joint and several', meaning that you may be liable for all response action costs incurred at a disposal site regardless of the existence of any other liable parties. MassDEP encourages parties with liabilities under M.G.L. c.21E to take prompt and appropriate actions in response to releases and threatsof release of oil and/or hazardous materials. By taking prompt action, you may significantly lower your assessment and cleanup costs and/or avoid liability for costs incurred by MassDEP in taking such actions. You may also avoid the imposition of, the amount of or This information is available in alternate format. Call Donald M. Gomes, ADA Coordinator at 617556.1057. TDD Service • 1.800198.2207. MassDEP on the Would Wide Web: hfp:/Aw .mass.gov/dep IVa Printed on Recycled Paper 2 reduce certain permit and/or annual compliance assurance fees payable under 310 CMR 4.00. Please refer to M.G.L. 0.21E for a complete description of potential liability. For your convenience, a summary of liability under M.G.L. c.21E is attached tolthis notice. You should be aware that you may have claims against third parties for damages, including claims for contribution or reimbursement for the costs of cleanup. Such claims do not exist indefinitely but are governed by laws which establish the time allowed for bringing litigation. MassDEP encourages you to take any action necessary to protect any such claims you may have against third parties. At the time of oral notification to MassDEP, the following response actions were approved as an Immediate Response Action (IRA): Continued assessment. Excavation and disposal of up to 10 cubic yards of contaminated soil. All Remediation Waste must be properly stored/handled and disposed of within 120 days from the date of generation per 310 CMR 40.0030. ACTIONS REQUIRED Additional submittals are necessary with regard to this notification including, but not limited to, the filing of a written IRA Plan, IRA Completion Statement and/or a Response Action Outcome (RAO) statement. The MCP requires that a fee of $1,200 be submitted to MassDEP when an RAO statement is filed greater than 120 days from the date of initial notification. Specific approval is required from MassDEP for the implementation of all IRAs pursuant to 310 CMR 40.0420 and 310 CMR 40.0443, respectively. Assessment activities, the construction of a fence and/or the posting of signs are actions that are exempt from this approval requirement. In addition to oral notification, 3110 CMR 40.0333 requires that a completed Release Notification Form (BWSC-103, attached) be submitted to MassDEP within sixty (60) calendar days of June 6, 2006. You must employ or engage a Licensed Site Professional (LSP) to manage, supervise or actually perform the necessary response actions at this site. The Department has Stefan Sokol with Groundwater Environmental Services Inc. listed as the LSP of record for this site. Unless otherwise provided by MassDEP, potentially responsible parties ("PRP's") have one year from the initial date of notification to MassDEP of a release or threat of a release, pursuant to 310 CMR 40.0300, or from the date MassDEP issues a Notice of Responsibility, whichever occurs earlier, to file with MassDEP one of the following submittals: (1) a completed Tier Classification Submittal; (2) an RAO Statement or, if applicable, (3) a Downgradient Property Status. The deadline for either of the first two submittals for this disposal site is June 6, 2007. If required by the MCP, a completed Tier I Permit Application must also accompany a Tier Classification Submittal. This site shall not be deemed to have had all the necessary and required response actions taken unless and until all substantial hazards presented by the release and/or threat of release have been eliminated and a level of No Significant Risk exists' or has been achieved in compliance with M.G.L. c.21E and the MCP. 3 If you have any questions relative: to this Notice, please contact Michael Moran at the letterhead address or at (508) 946-2855. All future communications regarding this release must reference the following Release Tracking Number: 4-19836. Very truly yours, Richard F. Packard, Chief Emergency Response / Release Notification Section P/MJM/re Document 4-19836 Attachments: Release Notification Form; BWSC-103 and Instructions Summary of Liability under M.G.L. c.21E MassDEP's guide to hiring a Licensed Site Professional. cc: Board of Health Board of Selectmen Fire Dept l i ` GroundwaterIN r� & Environmental Services, Inc. 1 364 Littleton Road. Suite 4 -Westford, Massachusetts 01886 .(978) 392-0090 -Fax (978) 392-8583 August 7, 2006 Mr. Scott Leite, Board of Health Director Town of Mansfield 6 Park Row Mansfield, Massachusetts 02048 Certified Mail No7005 3110 0001 9810 1085 Re: Public Notification Requirement BWSC-103 Release Notification Form Submittal — RTN 4-19836 Mobil Station No. 11904 (Formerly 01-731) 189 Chauney Street, Mansfield, Massachusetts Dear Mr. Leite: This letter is sent to you to fulfill the public involvement provisions of the Massachusetts Contingency Plan (MCP) for the above referenced site. The public involvement provisions [310 CMR 40.1403 (3) (h)] require that the Chief Municipal Officer and the Board of Health, in the community(ies) in which a disposal site is located, be notified that a Massachusetts Department of Environmental Protection (MADEP) Transmittal Form Bureau of Waste Site Clean-up (BWSC) -103 Release Notification Form (RNF) has been submitted to the MADEP for Release Trading Numbers (RTNs) 4-19836. The Transmittal Form BWSC-103 RNF will be submitted to the MADEP Southeast Regional Office on August 7, 2006 and a copy has been included for your records. In addition, your department has the right to request additional Public Involvement Activities under CMR 40.1403 (9) and upon tier classification, if applicable, under 310 CMR 40.1404. If you have any questions regarding this submittal, please contact the undersigned at (978) 392-0090. Sincerely, GROUNDWATER & ENVIRONMENTAL SERVICES, INC. Sarah J.kokaram Richard Carmosino Staff Environmental Scientist Project Manager Stefan Solcol, LSP Senior Project Manager cc: MADEP Southeast Regional Office Attachments: Copy of Transmittal Form BWSC-103 RNF (4-19836) GGS Document 77acking No. 11949 Environmental Solutions and Liability Management Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup RELEASE NOTIFICATION & NOTIFICATION RETRACTION FORM Pursuant to 310 CMR 40.0335 and 310 CMR 40.0371 (Subpart C) RELEASE OR THREAT OF RELEASE LOCATION: Release Name/Location Aid: Street Address: City/Town: 4. ZIP Code: L, UTM Coordinates: a. UTM N: b. UTM E: 315628 THIS FORM IS BEING USED TO: (check one) ❑✓ 1. Submit a Release Notification ❑ 2. Submit a Revised Release Notification BWSC103 Release Tracking Number R1- 7983,E ❑3. Submit a Retraction of a Previously Reported Notification of a release or threat of release including supporting documentation required pursuant to 310 CMR 40.0335 (Section C is not required) (All sections of this transmittal form must be filled out unless otherwise noted above) INFORMATION DESCRIBING THE RELEASE OR THREAT OF RELEASE ITOR): Date and time of Oral Notification, if applicable: 6I612006 Time: 01:10 ® AM ❑J PM mm/dd/yyyy hh:mm Date and time you obtained knowledge of the Release or TOR: 6/6/2006 Time: E] AM ❑ PM mm/dd/yyyy hh:mm Date and time release or TOR occurred, if known: 616/2006 Time: AM ❑ PM mm/dd/yyyy hh:mm eck all Notification Thresholds that apply to the Release or Threat of Release: r more information see 310 CMR 40.0310 - 40.0315) 2 HOUR REPORTING CONDITIONS ❑ a. Sudden Release ® b. Threat of Sudden Release ❑ c. Oil Sheen on Surface Water ❑ d. Poses imminent Hazard ®e. Could Pose Imminent Hazard f. Release Detected in ❑ Private Well ❑ g. Release to Storm Drain ® h. Sanitary Sewer Release (Imminent Hazard Only) 5. 72 HOUR REPORTING CONDITIONS a. Subsurface Non -Aqueous ❑ Phase Liquid (NAPL) Equal to or Greater than 112 Inch J. Underground Storage Tank (UST) Release c. Threat of UST Release ❑ d. Release to Groundwater near Water Supply Fe. Release to Groundwater near School or Residence ❑ I. Substantial Release Migration 6. 120 DAY REPORTING CONDITIONS a. Release of Hazardous ❑Material(s) to Soil or Groundwater Exceeding Reportable Concentration(s) b. Release of Oil to Soil ® Exceeding Reportable Concentration(s) and Affecting More than 2 Cubic Yards C. Release of Oil to ❑ Groundwater Exceeding Reportable Concentration(s) d. Subsurface Non -Aqueous ❑ Phase Liquid (NAPL) Equal to or Greater than 1/8 Inch and Less than 1/2 Inch Revised: 02/10/2006 Page 1 of 3 Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC103 Ll RELEASE NOTIFICATION & NOTIFICATION Release Tracking Number RETRACTIONFORM E - 19836 Pursuant to 310 CMR 40.0335 and 310 CMR 40.0371 (Subpart C) C. INFORMATION DESCRIBING THE RELEASE OR THREAT OF RELEASE (TOR): fcont.) 7. List below the Oils (0) or Hazardous Materials (HM) that exceed their Reportable Concentration (RC) or Reportable Quantity (RQ) by the greatest amount. O or HM Released CAS Number, O or HM Amount or Units RCs Exceeded, if if known Concentration Applicable (RCS-1, RCS-2, RCGW-1, RCGW-2) GASOLINE � � 0.05 GALIHR NlA ___J E== E== E::= 1ji " l 1 ❑ 8. Check here if a list of additional Oil and Hazardous Materials subject to reporting is attached. D. PERSON REQUIRED TO NOTIFY: 1. Check all that apply: ❑ a. change in contact name ❑ b. change of address ❑ c, change in the person notifyin 2. Name of Organization: MOBIL BUSINESS RESOURCES CORP 3. Contact First Name: JELIZABETH 1 4. Last Name: ZINKEVICZ 5. Street: 6. Title: 7. City/Town: 8. State: 9. ZIP Code: 10. Telephone: 8173812851 11. Ext.: 12. FAX: _ ❑13. Check here if attaching names and addresses of owners of properties affected by the Release or Threat of Release, other than an owner who is submitting this Release Notification (required). E. RELATIONSHIP OF PERSON TO RELEASE OR THREAT OF RELEASE: © 1. RP or PRP ❑ a. Owner ❑ b. Operator ❑ c. Generator ❑ d. Transporter ❑✓ e. Other RP or PRP Specify: PRP GENERIC OR NON -SPECIFIED ❑ 2. Fiduciary, Secured Lender or Municipality with Exempt Status (as defined by M.G.L. c. 21 E, s. 2) ❑ 3. Agency or Public Utility on a Right of Way (as defined by M.G.L. c. 21 E, s. 5(j)) ❑ 4. Any Other Person Otherwise Required to Notify Specify Relationship: Revised: 02/10/2006 Page 2 of 3 Massachusetts Department of Environmental Protection Bureau of Waste Site Cleanup BWSC103 RELEASE NOTIFICATION & NOTIFICATION Release Tracking Number RETRACTION FORM R] - 19836 Pursuant to 310 CMR 40.0335 and 310 CMR 40.0371 (Subpart C) CERTIFICATION OF PERSON REQUIRED TO NOTIFY: 1. I ELIZABE_TH ZINKEVICZ I , attest under the pains and penalties of perjury (i) that I have personally examined and am familiar with the information contained in this submittal, including any and all documents accompanying this transmittal form, (it) that, based on my inquiry of those individuals immediately responsible for obtaining the information, the material information contained in this submittal is, to the best of my knowledge and belief, true, accurate and complete, and (iii) that I am fully authorized to make this attestation on behalf of the entity legally responsible for this submittal. I/the person or entity on whose behalf this submittal is made am/is aware that there are significant penalties, including, but not limited to, possible fines and imprisonment, for willfully submitting false, inaccurate, or incomplete information. By: Signature 3. Title: 4. For: MOBIL BUSINESS RESOURCES CORP 5. Date: 08/07/2006 (Name of person or entity recorded in Section D) mm/dd/yyyy 6. Check here if the address of the person providing certification is different from address recorded in Section D. 7. Street: 8. City/Town: 11. Telephone: 9. State: 10. ZIP Code: 12. Ext.: 13. FAX: YOU ARE SUBJECT TO AN ANNUAL COMPLIANCE ASSURANCE FEE OF UP TO $10,000 PER BILLABLE YEAR FOR THIS DISPOSAL SITE. YOU MUST LEGIBLY COMPLETE ALL RELEVANT SECTIONS OF THIS FORM OR DEP MAY RETURN THE DOCUMENT AS INCOMPLETE. IF YOU SUBMIT AN INCOMPLETE FORM, YOU MAY BE PENALIZED FOR MISSING A REQUIRED DEADLINE. Date Stamp (DEP USE ONLY:) Received by DEP on 8/7/2006 8:58:29 AM Kevised: U2/1U/2006 Page 3 of 3 eDEP:'Print Receipt Page 1 of 1 Submittal Summary & Receipt Your submission is complete. Thank you for using DEP's online reporting system. You can select "My Homepage" to review your status. DEP Transaction ID: 81767 Date and Time Submitted: 8/7/2006 8:58:29 AM User Email : ssokol@gesonline.com Form Name: BWSC 103 Release Notification & Retraction Form RTN: 4-19836 Location: MOBIL STATION Address: 189 CHAUNCY ST, MANSFIELD, 020480000 Person Making Submittal MOBIL BUSINESS RESOURCES CORP ELIZABETH ZINKEVICZ Person Making Certification MOBIL BUSINESS RESOURCES CORP ELIZABETH ZINKEVICZ Additional Forms Submitted https:Hedep.dep.mass.gov/restrieted/wcbpages/printreceipt.aspx 8/7/2006