Phase IV final inspection report, remedial monitoring report no. 15 and Phase V remedy operation status report : 50 Tufts Street, Somerville, Massachusetts / submitted to: UniFirst Corp. ; submitted by: GEI Consultants, Inc

2011·40.6 MB·English

by  GEI Consultants.

SOMERV/LLE
PUBLIC LIBRARY

Geotechnical
Environmental
?99:
Water Resources
Ecological
MassDEP RTN 3-23246
Phase IV Final Inspection Report,
Remediai Monitoring Report No. 15
and Phase V Remedy Operation
Status Report
50 Tufts Street, Somerville, Massachusetts
Submitted to:
UniFirst Corporation
68 Jonsprn Rd
Wilmington, MA 01887
Submitted by:
GEI Consultants, Inc.
400 Unicom Park Drive
Woburn, MA 01801
RECIIVID
781-721-4000
August 4,2011 AUG 0 4 2011
DEP
Project 04516-3
northeast, regional office
Vice President

MassDEP RTN 3-23246
Phase IV Final Inspection Report, Remedial Monitoring
Report No. 15 and Phase V Remedy Operation Status Report
50 Tufts Street, Somerville, Massachusetts
UniFirst Corporation
August 4, 2011
Table of Contents
vii
Executive Summary
1
1. Introduction
1.1 Site Contacts (310 CMR 40.0874[3][a]) 1
1.2 Background 2
1.3 Purpose and Scope 4
1.4 Public Involvement (310 CMR 40.1400) 5
2. Phase IV Completion 6
2.1 Regulatory Framework 6
2.2 Implementation of CRA 6
2.3 Permits, Licenses, and Approvals (310 CMR 40.0878[3]) 7
2.3.1 Capuano Center 7
2.3.2 Residential and Commercial Properties 7
2.3.3 60 Tufts Street Property 8
2.3.4 50 Tufts Street Property 8
2.4 Phase IV Completion Statement 8
2.5 Response Action Outcomes 8
2,5.1 Class A-3 RAO-P 9
2.5.2 Class B-1 RAO-P 9
10
3. Data Collection
3.1 Groundwater Sampling 10
3.2 Indoor Air Sampling 10
3.3 Indoor Air Sampling - Checklists and Methods 11
3.4 Meteorological Conditions 11
3.5 Sub-Slab Soil Sampling 12
4. Capuano Center Phase IV Activities and Final Inspection 13
4.1 Introduction 13
4.2 Permits, Licenses, and Approvals (310 CMR 40.0878[3]) 13
4.3 Remedial Objectives 13
4.4 Operation and Monitoring 14
4.5 Efficiency and Effectiveness 14
4.6 System Maintenance and Modifications 14
4.7 Management of Waste Materials 14
15
4.8 Final Inspection
4.9 Ongoing Phase V ROS Activities (Modification of Phase IV RIP O&M) 15
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MassDEP RTN 3-23246
Phase IV Final Inspection Report, Remedial Monitoring
Report No. 15 and Phase V Remedy Operation Status Report
50 Tufts Street, Somerville, Massachusetts
UniFirst Corporation
August 4, 2011
5. Residential and Commercial Properties_
5.1 Introduction 16
5.2 Permits, Licenses, and Approvals (310 CMR 40.0878[3]) 17
5.3 Remedial Objectives 17
5.4 Option 1 EPEMS 17
5.4.1 Operation and Monitoring 18
5.4.2 Efficiency and Effectiveness 18
5.4.3 System Maintenance and Modifications 18
5.4.3.1 95 Franklin Street 19
5.4.3.2 27 Tufts Street 19
5.4.4 Management of Waste Materials 20
5.4.5 Final Inspection 20
5.4.5.1 35-37 Knowlton Street 20
5.4.5.2 31-33 Knowlton Street 21
5.4.5.3 13 Morton Street 22
5.4.5.4 18 Morton Street 22
5.4.5.5 23 Tufts Street 23
5.4.5.6 103 Washington Street 24
5.4.5.7 95 Franklin Street 24
5.4.5.8 9 Knowlton Street 25
5.4.5.9 13 Knowlton Street 26
5.4.5.10 27 Tufts Street 26
5.5 Option 2 and 3 EPEMs 28
5.5.1 Operation and Monitoring 28
5.5.2 Efficiency and Effectiveness 29
5.5.3 System Maintenance and Modifications 30
5.5.4 Management of Waste Materials 30
5.5.5 Final Inspection 30
5.5.5.1 95R Franklin Street 30
5.5.5.2 12 Morton Street 31
5.5.5.3 11 Morton Street 31
5.5.5.4 4 Morton Street 32
5.5.5.5 10 Morton Street 32
5.5.5.6 91-93 Franklin Street 33
5.5.5.7 17 Knowlton Street 34
5.5.5.8 32 Knowlton Street 34
5.5.5.9 19-19A Morton Street 35
5.5.5.10 166-168 Glen Street 36
5.6 Activity and Use Limitations 36
5.7 Properties with Insufficient Rounds of Sampling 36
5.7.1 Complete Vapor Intrusion Pathway which Constitutes NSR 36
5.8 Ongoing Phase V Activities 37
5.8.1 EPEM Operation and Monitoring 37
5.8.2 EPEM Modifications 37
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MassDEP RTN 3-23246
Phase IV Final Inspection Report, Remedial Monitoring
Report No. 15 and Phase V Remedy Operation Status Report
50 Tufts Street, Somerville, Massachusetts
UniFirst Corporation
August 4, 2011
5.8.3 Installation of New EPEMs 37
5.8.4 Indoor Air Sampling 38
5.8.5 AULs and RAOs 38
6. 60 Tufts Street Phase IV Activities and Final Inspection 39
6.1 Introduction 39
6.2 Permits, Licenses, and Approvals (310 CMR 40.0878[3]) 39
6.3 Remedial Objectives 39
6.4 Efficiency and Effectiveness 39
6.5 Operation and Monitoring 40
6.5.1 Unitl 40
6.5.2 Unit 4 40
6.5.3 Unit 5 40
6.6 Management of Waste Materials 40
6.7 System Maintenance and Modifications 41
6.8 Final Inspection 41
6.9 Ongoing Phase V ROS Activities (Modification of Phase IV RIP) 41
7. 50 Tufts Street Phase IV Activities and Final Inspection 42
7.1 Introduction 42
7.2 Permits, Licenses, and Approvals (310 CMR 40.0878[3]) 42
7.3 Remedial Objectives 42
7.4 Efficiency and Effectiveness 42
7.5 Operation and Monitoring 43
7.6 Management of Waste Materials 44
7.7 System Maintenance and Modifications 44
7.8 Final Inspection 44
7.9 Ongoing Phase V ROS Activities 45
8. Monitored Natural Attenuation 46
8.1 MNA Program Objectives 46
8.2 MNA Activities 46
9. Remedial Monitoring Report No. 15 48
10. Phase V ROS Submittal 49
10.1 Introduction 49
10.2 Regulatory Framework 49
10.3 LSP Opinion 50
11. References 51
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