February 22, 2019 New Jersey Department of Environmental
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February 22, 2019 New Jersey Department of Environmental Protection Bureau of Case Management Mail Code 401-05F P.O. Box 420 Trenton, NJ 08625-0420 Attn: Donna Gaffigan, Case Manager Re: Site-Wide Groundwater Progress Report Hoffmann-La Roche Inc. Site 340 Kingsland Street Nutley, New Jersey SRP PI #s 009949, 614465, and 625447 TRC Project No. 105009/198233 Dear Ms. Gaffigan: On behalf of Hoffmann-La Roche Inc. (Roche), TRC Environmental Corp. (TRC) is submitting the attached Site-Wide Groundwater Progress Report, dated February 22, 2019. This report presents the results of activities conducted between August 2017 and April 2018 for semi-annual groundwater monitoring events and recent targeted Interim Remedial Measure (IRM) performance monitoring programs completed in selected areas. The focus of this GWPR is to monitor and document groundwater quality along the Site perimeter and in select interior areas of the Site over the reporting period. The field programs reported herein, were performed in accordance with the NJDEP’s Technical Requirements for Site Remediation (N.J.A.C. 7:26E) and applicable NJDEP Guidance, the approved Site-Wide Groundwater Sampling Plan – IRM Implementation Period (July 2015), and associated requests for Approval-Modification of the Site-Wide Groundwater Sampling Plan – IRM Implementation Period – July 2015 (February and May 2016), Roche Remediation Road Map (September 2012), and associated correspondence (NJDEP comments, Roche Response letters). We look forward to meeting with you to discuss the contents of this report once you have had a chance to review it. In the interim, if you have any questions or need additional information, please feel free to contact Rebecca Hollender at 908-988-1710 or [email protected], or Dan Nachman at 908-988-1637 or [email protected]. Site-Wide Groundwater Progress Report for the Hoffmann-La Roche Inc. Site Nutley, New Jersey Prepared For: Hoffmann-La Roche Inc. 800 Bloomfield Avenue, Suite 127 Nutley, NJ 07110-1199 PI ID #’s 009949, 614465, and 625447 Prepared By: TRC Environmental Corporation 41 Spring Street, Suite 102 New Providence, NJ 07974 February 22, 2019 TABLE OF CONTENTS Section No. Title Page No. 1.0 INTRODUCTION............................................................................................................... 1 1.1 DOCUMENT ORGANIZATION ............................................................................................... 2 2.0 SITE BACKGROUND AND GENERAL INFORMATION .......................................... 3 2.1 SITE BACKGROUND AND HISTORY ...................................................................................... 3 2.2 CURRENT OWNERSHIP AND SITE REDEVELOPMENT ............................................................ 3 3.0 CONCEPTUAL SITE MODEL ........................................................................................ 4 4.0 GROUNDWATER INTERIM REMEDIAL MEASURE (IRM) PROGRAMS .......... 6 5.0 GROUNDWATER CONTAMINANTS OF CONCERN................................................ 7 6.0 TECHNICAL OVERVIEW ............................................................................................... 9 6.1 REMEDIATION STANDARDS AND CRITERIA ......................................................................... 9 6.2 GROUNDWATER SAMPLING PROGRAMS .............................................................................. 9 6.2.1 Site-Wide Groundwater Monitoring Program ............................................................ 9 6.2.1.1 Semi-Annual Fluid-Level Measurements .............................................................. 10 6.2.1.2 Semi-Annual Groundwater Sampling ................................................................... 11 6.2.2 Groundwater IRM Performance Monitoring Programs ........................................... 12 6.2.3 Off-Site Allwood Road Borehole Installation and Sampling .................................... 13 6.2.3.1 Borehole Installation.............................................................................................. 13 6.2.3.2 Borehole Geophysical Logging ............................................................................. 15 6.2.3.3 Packer Testing and Sampling ................................................................................ 15 6.3 MONITORING WELL DECOMMISSIONING .......................................................................... 16 6.4 DATA RELIABILITY ........................................................................................................... 18 6.5 FACTORS INFLUENCING DATA .......................................................................................... 18 6.6 DEVIATION FROM THE TECHNICAL REQUIREMENTS AND GUIDANCE ................................ 19 7.0 SUPPLEMENTAL INVESTIGATIVE FINDINGS ...................................................... 20 7.1 GROUNDWATER FLOW REGIME ........................................................................................ 20 7.2 SITE-WIDE GROUNDWATER QUALITY ASSESSMENT ........................................................ 22 7.2.1 PCE+ Groundwater Results – 3Q 2017 and 1Q 2018 ............................................. 23 7.2.2 TCA+ Groundwater Results – 3Q 2017 and 1Q 2018 .............................................. 25 7.2.3 Benzene, Chlorobenzene, and Other VOCs Groundwater Results – 3Q 2017 and 1Q 2018 .......................................................................................................................... 25 7.2.4 Dioxane Groundwater Results – 3Q 2017 and 1Q 2018 .......................................... 27 7.3 SUPPLEMENTAL BACKGROUND INVESTIGATION AT ALLWOOD ROAD .............................. 28 8.0 SCHEDULE OF ACTIVE, COMPLETED, AND FUTURE GROUNDWATER MONITORING AND REMEDIAL ACTION ACTIVITIES ....................................... 30 9.0 REFERENCES .................................................................................................................. 31 i of vi LIST OF FIGURES Figure No. Title 1 Site Location Map 2 Monitoring Well Location Map 3 Hydrogeologic Structure 4 Potentiometric Surface Map Shallow Groundwater and HGUs 1 through 5 – Measured September 26, 2017 5 Potentiometric Surface Map Shallow Groundwater and HGUs 1 through 5 – Measured March 6, 2018 6 PCE+ in Groundwater Overburden – 3Q 2017 7 PCE+ in Groundwater HGU 1 – 3Q 2017 8 PCE+ in Groundwater HGU 2 – 3Q 2017 9 PCE+ in Groundwater HGU 3 – 3Q 2017 10 PCE+ in Groundwater HGU 4 – 3Q 2017 11 PCE+ in Groundwater HGU 5 – 3Q 2017 12 PCE+ in Groundwater Overburden – 1Q 2018 13 PCE+ in Groundwater HGU 1 – 1Q 2018 14 PCE+ in Groundwater HGU 2 – 1Q 2018 15 PCE+ in Groundwater HGU 3 – 1Q 2018 16 PCE+ in Groundwater HGU 4 – 1Q 2018 17 PCE+ in Groundwater HGU 5 – 1Q 2018 18 TCA+ in Groundwater Overburden – 3Q 2017 19 TCA+ in Groundwater HGU 1 – 3Q 2017 20 TCA+ in Groundwater HGU 2 – 3Q 2017 21 TCA+ in Groundwater HGU 3 – 3Q 2017 22 TCA+ in Groundwater HGU 4 – 3Q 2017 23 TCA+ in Groundwater HGU 5 – 3Q 2017 24 TCA+ in Groundwater Overburden – 1Q 2018 25 TCA+ in Groundwater HGU 1 – 1Q 2018 26 TCA+ in Groundwater HGU 2 – 1Q 2018 27 TCA+ in Groundwater HGU 3 – 1Q 2018 28 TCA+ in Groundwater HGU 4 – 1Q 2018 29 TCA+ in Groundwater HGU 5 – 1Q 2018 30 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater Overburden – 3Q 2017 31 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 1 – 3Q 2017 ii of vi 32 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 2 – 3Q 2017 33 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 3 – 3Q 2017 34 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 4 – 3Q 2017 35 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 5 – 3Q 2017 36 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater Overburden – 1Q 2018 37 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 1 – 1Q 2018 38 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 2 – 1Q 2018 39 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 3 – 1Q 2018 40 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 4 – 1Q 2018 41 Benzene, Chlorobenzene, and Other VOC Exceedances in Groundwater HGU 5 – 1Q 2018 42 1,4-Dioxane in Groundwater Overburden – 3Q 2017 43 1,4-Dioxane in Groundwater HGU 1 – 3Q 2017 44 1,4-Dioxane in Groundwater HGU 2 – 3Q 2017 45 1,4-Dioxane in Groundwater HGU 3 – 3Q 2017 46 1,4-Dioxane in Groundwater HGU 4 – 3Q 2017 47 1,4-Dioxane in Groundwater HGU 5 – 3Q 2017 48 1,4-Dioxane in Groundwater Overburden – 1Q 2018 49 1,4-Dioxane in Groundwater HGU 1 – 1Q 2018 50 1,4-Dioxane in Groundwater HGU 2 – 1Q 2018 51 1,4-Dioxane in Groundwater HGU 3 – 1Q 2018 52 1,4-Dioxane in Groundwater HGU 4 – 1Q 2018 53 1,4-Dioxane in Groundwater HGU 5 – 1Q 2018 54 Allwood Road Borehole Investigation - Cross-Section A-A’ iii of vi LIST OF TABLES Table No. Title 1 Groundwater Sample Collection Summary – Groundwater and QC Samples 1-1 Sample Summary Table – Semi-Annual Groundwater Sampling 1-1A Sample Summary Table – Rejected Incorrect Analytical Method – 1Q 2018 1-2 Sample Summary Table – Supplemental IRM Groundwater Sampling 1-2A Sample Summary Table – Rejected IRM Samples – Elevated Laboratory Method Detection Limits (MDLs) for 1,4-Dioxane 1-3 Sample Summary Table – Field and Trip Blank Samples 2 Well Construction Details 2-1 Monitoring Well Construction Details 2-2 Remediation Well Construction Details 2-3 Monitoring Well Construction Details - Off-Site Wells Associated with Other Remedial Investigations