Release abatement measure plan : 343-349 and 351 Summer Street Somerville, Massachusetts / prepared for: 351 Summer LLC c/o The Maggiore Companies ; prepared by: EnviroTrac, Ltd

2017·30 MB·English

by  EnviroTrac, Ltd.

RELEASE ABATEMENT MEASURE PLAN
343-349 and 351 Summer Street
Somerville, Massachusetts
MassDEP RTNs 3-33735 and 3-34098
June 16, 2017
Prepared for:
351 Summer LLC
c/o The Maggiore Companies
13 Wheeling Avenue
Woburn, Massachusetts 01801
Prepared by:
EnviroTrac, Ltd.
2 Merchant Street, Suite 2
Sharon, Massachusetts 02067
A Full Service Environmental Consulting
And Contracting Firm

RAM Plan; RTNs 3-33735 and 3-34098
TABLE OF CONTENTS
Page #
I. 0 INTRODUCTION.1
2.0 PROPERTY DESCRIPTION.1
2.1 Disposal Site Boundary Descriptions.2
2.2 Sensitive Receptors.2
2.3 Groundwater and Soil Classification.2
2.4 Previous Environmental Investigations.3
3.0 DESCRIPTION OF RELEASE [310 CMR 40.0444(1 )(B)].3
3.1 Description of Release.3
4.0 RELEASE ABATEMENT MEASURE PLAN [310 CMR 40.0444(1 )(C)].5
4.1 Person Conducting the RAM.5
4.2 Objectives.5
4.3 RAM Activities.6
4.4 Implementation Schedule.7
5.0 SOIL MANAGEMENT.7
5.1 Remediation Waste Management [310 CMR 40.0444(1 )(d)].7
5.2 Similar Soils Management.8
6.0 PROPOSED ENVIRONMENTAL MONITORING PLAN [310 CMR 40.0444(1 )(E)].8
7.0 PERMITS [310 CMR 40.0444(1 )(F)].8
7.1 Federal Permits.8
7.2 State and Local Permits.8
8.0 APPROVAL OF LICENSED SITE PROFESSIONAL [310 CMR 40.0444(1 )(G)].9
9.0 EXCAVATION CERTIFICATION [310 CMR 40.0444(1 )(H)].9
10.0 OTHER INFORMATION [310 CMR 40.0444(1 )(l)].9
II. 0 PROPOSED STRUCTURE FOOTPRINT EVALUATION.9
11.1 Site Assessment [310 CMR 40.0442(3)(a)].9
11.2 Risk Characterization [310 CMR 40.0442(3)(b)].9
11.3 Feasibility of Achieving or Approaching Background [310 CMR 40.0442(3)(c)].10
11.4 Exposure Point Concentrations (EPCs) that Exceed Soil Upper Concentration Limits
(UCLs) [310 CMR 40.0442(3)(d)].10
11.5 Elimination or Control of Any Source of OHM Contamination [310 CMR 40.0442(3)(e)]. 10
11.6 Management of Non-aqueous Phase Liquid (NAPL) [310 CMR 40.0442(3)(f)].10
11.7 Other Remedial Actions Deemed Necessary to Ensure Eventual Achievement of a Level
of NSR for the Entire Disposal Site [310 CMR 40.0442(3)(g)].10
FIGURES
Figure 1 Locus Map
Figure 2 Site Plan
Figure 3 MCP Priority Resource Map 3Sll
TABLES
Table 1 Summary of Monitoring Well Gauging Data £ is/
Table 2 Summary of Groundwater Analytical Data
Table 3 Summary of Soil Analytical Data - VOCs vi
Table 4 Summary of Soil Analytical Data - VPH, EPH
Table 5 Summary of Soil Analytical Data - All Other Analyses
Table 6 Summary of Surficial Soil Analytical Data
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1 rvirunmt-nl.il Services

RAM Plan; RTNs 3-33735 and 3-34098
343-349 and 351 Summer Street. Somerville, MA June 16. 2017
APPENDICES
Appendix A Soil Management Plan
Appendix B Health and Safety Plan
Appendix C Dust Monitoring Plan
Appendix D Focused Risk Characterization
Appendix E Geophysical Survey Report
Appendix F Laboratory Reports
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RAM Plan; RTNs 3-33735 and 3-34098
343-349 and 351 Summer Street. Somerville, MA June 16. 2017
1.0 INTRODUCTION
EnviroTrac Ltd. (EnviroTrac) prepared this Release Abatement Measure (RAM) Plan on behalf of
351 Summer LLC (351 Summer) for the commercial properties located at 343-349 and 351
Summer Street in Somerville, Massachusetts. 351 Summer LLC acquired the 343-349 Summer
Street parcel from The Dakota Group on February 6, 2017 and acquired development rights for
351 Summer Street from the Dilboy VFW Post #529 for the 351 Summer Street parcel on
February 6, 2017.
A RAM Plan is required to manage potentially impacted soil related to Release Tracking Numbers
(RTNs) 3-33735 and 3-34098 during development-related construction. This RAM was prepared
pursuant to provisions of the Massachusetts Contingency Plan (MCP) set forth at 310 CMR
40.0444 and Massachusetts Department of Environmental Protection (MassDEP) Policy #WSC-
00-425.
2.0 PROPERTY DESCRIPTION
The Property is an approximately 0.93 acre plot of land comprised of two (2) parcels of land
identified by the City of Somerville Assessor’s office as Map #25, Block D, Lots #33 (343-349
Summer Street) and #36 (351 Summer Street) in an area zoned Central Business District CBD
and Residence A (RA), and is surrounded by properties zoned Residence B (RB) and
Neighborhood Business (NB). The latitude and longitude of the Property are 42.39369° North and
71.11910° West, respectively. The location of the Property is depicted on Figure 1. A Site Plan
depicting the approximate location of the release and other pertinent features is provided as
Figure 2.
The Property consists of a vacant parcel of land located in a flat, low-lying area surrounded by
residences and commercial properties. The Massachusetts Bay Transportation Authority (MBTA)
Red Line runs directly below the Site within a bedrock tunnel approximately 80 feet bgs. The
parcel identified as 343-349 Summer Street is currently undeveloped but contains an air vent for
the MBTA Red Line which runs beneath the southwestern portion of the parcels. The parcel at
351 Summer Street is currently used as a paved parking lot for the adjacent George Dilboy VFW
Post #529.
Historically, the 351 Summer Street parcel was used as a gasoline filling station prior to the parcel
being vacated to facilitate the construction of the MBTA Red Line beneath the property in the
1980s. The 343-349 Summer Street parcels had been the location of residential dwellings and
associated parking. Two (2) 60-gallon petroleum underground storage tanks (USTs) were
formerly located at the Facility and were removed in August 2016.
The Property is bordered by the following:
North: Residential properties
South: Summer Street, beyond which are residential properties.
East: Residential and commercial properties.
West: Veterans of Foreign Wars building/parking lot and commercial properties.
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