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MassachuSettsDepartmeoEvironm BureauofWaste eCleanup COMPREHENSIVERESPONSE ACTION RA n su FORM&PHASEICOMPLETIONSTATE E ENT s Psmto31CMSIELCAfN(840.0484(0 (bpart D) nd408 A.~ ~ 800 up 00 loolLECATeo - --- Regle~elas~rakig~ubestates~rm~drsse:-'231 .. d 4,1322- B. THISFOISE NGUEDTO (ceklMtpl Sumiahaesep08I0e0fwar, puruanie30CM40.00034,omplet.ecionA.BC.G0 adJ) (cmphSEcO LTio,.CD,,RIPa4) O Subres Phae lV Remeyrnplemenaljan0lan pursuantto310CMR40. 0C8ad)0mpltesttinsA08BG, E.PHSbIVtn P I0,Bullonsi-u3ionpeo ttPAtDCMR40 .007(meecn ,CG4d (0E tESc riA ,C Ha). Massachusetts Department of Environmental Protection BWSC-108 Bureau of Waste Site Cleanup COMPREHENSIVE RESPONSE ACTION TRANSMITTAL Release Tracking Number FORM & PHASE I COMPLETION STATEMENT -12 Pursuant to 310 CMR 40.0484 (Subpart D) and 40.0800 (Subpart H) H. PERSON UNDERTAKING RESPONSE ACTION(S): Name of Organization: Somerset Operations, Inc. Nameof Contact: :Leonard Ariagno Title: Plant Manager Street: 1606 Riverside Avenue City/Town: Somerset State: MA ZIP Code: 02726 Telephone: 508-235-2004 Ext.: FAX: (optional) Check here if there has been a change in the person undertaking the Respose Action. 1. RELATIONSHIP To SITE OF PERSON UNDERTAKING RESPONSE AdTION(S): (check one) RP or PRP Specify: () Owner 0 Operator Q Generator Q Transportir Other RP or PRP: Fiduciary, Secured Lender or Municipality with Exempt Status (as defined by M.G.L. c. 21 E,s. 2) E Agency or Public Utility on a Right of Way (as defined by M.G.L. c. 21E, s. 50)) E Any Other Person Undertaking Response Action Specify Relationship: J. CERTIFICATION OF PERSON UNDERTAKING RESPONSE ACTION(S): Leonard Ariagno , attest under the pains and penalties of perjury (i)that I have personally examined and am familiar with the information contained inthis submittal, including any and all documents accompanying this transmittal form, (ii)that, based on my Inquiry for obtaining the Information, the material information contained In this submittal is, to the best of my of those individuals Immediately responsible for 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 this submittal. Vithe 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 subm g alse, Inaccurate, or Incomplete information. Plant Manager By- Title: For Somerset Operations, Inc. Date: Z7 , (print name of person or entity recorded in Section H) Enter address of the person providing certification, if different from address recorded inSection H: Street: ZIP Code: CityfTown: State: Telephone: Ext.: FAX: (optional) AS YOU MUST COMPLETE ALL RELEVANT SECTIONS OF THIS FORM OR DEP MAY RETURN THE DOCUMENT INCOMPLETE. IF YOU SUBMIT AN INCOMPLETE FORM, YOU MAY BE PENALIZED FOR MISSING A REQUIRED DEADLINE. and 013 Page 3 of 3 Revised 3/30/95 Supersedes Forms BWSC-010 (in part) Do Not After This Form IT Corporadon . 100 River Ridge Drive Norwood, A1.402062-5045 Tel. 781.769.7600 Fax. 781.769.7992 the A Member of The IT Group SoUjiHEAST REGO MASSACHUSETTS CONTINGENCY PLAN PHASE Il - COMPREHENSIVE SITE ASSESSMENT REPORT LEDGE ROAD PROPERTY SWANSEA, MASSACHUSETTS MADEP RELEASE TRACKING NUMBER 4-14230 September 28, 2001 Prepared for: Somerset Power, LLC 1606 Riverside Avenue Somerset, Massachusetts 02726 Prepared By: Reviewed By: IT Corporation IT Corporation AN' Lynn M. Maybury David E. Egan, LSP Geologist Senior Geologist Regulatory Specialist >~aA2 C5 Patrick Haskell David Mannion Hydrogeologist Senior Project Manager P:\RG\edgeRD\Final 01\Repors\Phase\MCP Phase 2occ IT Corporation A Member of The IT Group Page i Site Assessment Report MCP Phase I Comprehensive September 28, 2001 Ledge Road Property, Swansea, MA, MADEP Site No. 4-14230 CONTENTS .......... 1 1.0 INTRO DUCTIO N................................................................................................................. Statem ent of Purpose .......................................................................................................... 1 1.1 1 1.2 Site Background ........................................................................................................... 2 2.0 G ENERAL SITE INFO RMATION ................................................................................................ Disposal Site Name, Location, and Locus Map [310 CMR 40.0485(4)(a)].....................2 2.1 3 Detailed Disposal Site Map [310 CM R 40.0485(4)(b)]................................................... 2.2 3 2.2.1 Site Description ................................................................................................... 2.2.2 Utilities....................................................................................................................4 Adjacent Properties ............................................................................................ 4 2.2.3 4 2.3 Natural Resource Areas ................................................................................................. 5 SITE HISTO RY [310 CM R 40.0485(4)(c)] ................................................................ 3.0 DISPO SAL 5 Ownership History ................................................................................................... 3.1 Site 6 History ................................................................................................................... 3.2 Release 6 3.3 Environm ental Database and Regulatory File Reviews................................................. CHARACTERISTICS [310 CMR 40.0485(4)(d)] .......................... 7 4.0 SITE HYDROGEOLOGICAL 7 Description of Site Hydrogeologic Characteristics .......................................................... 4.1 7 Regional Geology ............................- ............................................................... 4.1.1 .7 4.1.2 Regional Hydrogeology .................................................................................... Topography, Surface Drainage, and Vegetation............................................... 8 4.1.3 8 Flooding Potential and Meteorology.................................................................... 4.1.4 9 Subsurface Investigation Methods ................................................................................. 4.2 9 4.2.1 Health and Safety............................................................................................... 9 4.2.2 Subsurface Investigations ...................................................................................... May 1998..................................................................................................9 4.2.2.1 10 4.2.2.2 July 1998............................................................................................ 11 4.2.2.3 Septem ber 2000 through Decem ber 2000 ........................................... 13 4.2.2.4 March 2001.......................................................................................... 14 4.2.2.5 May 2001............................................................................................ and Stratigraphic Conditions ....................................................................... 15 4.3 Geological 15 4.4 Ash Sample Results ..................................................................................................... [310 5.0 ENVIRONMENTAL FATE AND TRANSPORT OF OIL AND/OR HAZARDOUS MATERIALS CM R 40.0835(4)(e)]........................................................................................................................15 6.0 NATURE AND EXTENT OF CONTAMINATION [310 CMR 40.0485(4)(f)]...............................17 Source of O il or Hazardous Material............................................................... 17 6.1 Potential 18 6.2 Distribution and Extent of Com pounds.......................................................................... 19 CHARACTERIZATION [310 CMR 40.0835(4)(g)&(h)]...................................... 7.0 LIMITED RISK 20 Identification..................................................................................................... 7.1 Hazard 20 Identified Sources of O HM .............................................................................. 7.1.1 20 icals of Potential Concern ........................................................................ 7.1.2 Chem 20 Background Evaluation ................................................................................... 7.1.3 21 7.2 Exposure Assessm ent................................................................................................... Potential Receptors .......................................................................................... 22 7.2.1 22 Soil and G roundwater Classification ................................................................ 7.2.2 22 7.2.2.1 Soil Categories Applicable at the Site ................................................. Categories Applicable at the Site ............................................... 23 7.2.4 Groundwater 24 of Com plete Exposure Pathways ............................................................ 7.3 Identification 24 7.4 Risk Characterization ..................................................................................................... 7.4.1 Soil........................................................................................................................24 25 7.4.2 Sedim ent .............................................................................................................