APPENDIX D. Monitoring Well Abandonment Correspondence with NJDEP:

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1 APPENDIX D Monitoring Well Abandonment Correspondence with NJDEP: July 13, 2016 Memo to NJDEP Re: Recommendations Regarding Monitoring Well Decommissioning April 26, 2016 Letter to NJDEP Re: Request for Approval to Decommission per N.J.A.C. 7:9D-3.1(b) & (g) NJDEP Well Permit No May 17, 2016 Letter to NJDEP Re: Well Decommissioning Authorization Request

2 Results you can rely on TRC 41 Spring Street New Providence, NJ Main Fax Memorandum To: Donna Gaffigan and David Morrow New Jersey Department of Environmental Protection From: Art Goeller, LSRP Subject: Recommendations Regarding Monitoring Well Decommissioning Date: July 13, 2016 CC: Chandra Patel (Roche), Greg Cierpial (Roche), Teresa O Meara (Roche), Walter Fedick (Roche), Dawn Pompeo (TRC), Dan Nachman (TRC), Linda Caramichael (TRC), Paul Furtick (TRC), Troy Gill (TRC) Project No.: BACKGROUND Following the Hoffmann-La Roche, Inc. (Roche) Nutley soil remediation and facilities decommissioning activities completed throughout the Nutley campus, TRC identified 95 monitoring wells that had experienced some damage, mostly to the flush mount components (manways, pads). TRC evaluated the wells and determined that 19 of the damaged wells are not needed for ongoing Interim Remedial Measure (IRM) or long-term groundwater monitoring, and therefore should be decommissioned (i.e., formally abandoned by a New Jersey-licensed well driller). TRC proposes to have each well sealed for its entire open interval (or a variance from N.J.A.C. 7:9D will be obtained), and (in accordance with N.J.A.C. 7:9D), obstructions (if present) will be removed or drilled out prior to well sealing. The wells proposed for decommissioning, including decommissioning rationale, are listed in Table 1, attached, and their locations are shown on Figure 1, attached. Roche requests NJDEP concurrence that these 20 wells can be abandoned. ENVIRONMENTAL ENERGY INFRASTRUCTURE

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4 Table 1 Decommissioning Recommendations for Site Monitoring Wells Hoffmann-La Roche Inc. - Nutley, New Jersey Well Designation Permit Number Hydeogeologic Zone Investigation Area (IA) East (X) (NJSP, NAD83) North (Y) (NJSP, NAD83) Inner Casing Material Inner Casing Diameter (in) Open Interval Type Total Depth (ft bgs) Open Interval Depth (ft bgs) Decommissioning Rationale 22RI-MW1 E S1 IA PVC 2 PVC Screen RI-MW4 E S1 IA PVC 2 PVC Screen RI-MW5 E S1 IA PVC 2 PVC Screen RI-MW3 E S1 IA PVC 2 PVC Screen RI-MW4 E S1 IA PVC 2 PVC Screen MW-4A S1 IA PVC 2 PVC Screen MW-5G E S1 Off-Site PVC 2 PVC Screen MW S1 IA PVC 2 PVC Screen MW S3 IA Steel 6 Open Hole MW-125 E S1 IA PVC 2 PVC Screen MW-157 E S1 IA PVC 2 PVC Screen MW-177 E S1 IA Steel 6 Open Hole MW-198 E S1 IA PVC 2 PVC Screen MW-213A E S1 Off-Site (Alexander Ave.) PVC 2 PVC Screen MW-256A E S1 IA PVC 2 PVC Screen MW-357-SBR E S1 IA PVC 2 PVC Screen MW-369A E S1 IA Steel 6 Open Hole MW-369-SBR E S1 IA PVC 2 PVC Screen RW S3 IA Steel 6 Open Hole S1 coverage (via 23RI-MW2 & 131RI-MW1) S1 coverage (via 53RI-MW3, MW-15W, & MW-17AW) S1 coverage (via 66RI-MW4, 179RI-MW1, MW-1, & MW-391A) S1 coverage (via 23RI-MW2 & 131RI-MW1) S1 coverage (via 23RI-MW2 & 131RI-MW1) S1 coverage (via 131RI-MW1, 179RI-MW1, MW-135, & MW-391A) S1 coverage (via MW-1G, MW-2G, MW-3G, & MW-4G) S1 coverage (via 23RI-MW2 & 131RI-MW1) S3 coverage (via MW-56, MW-320C, & MW-323C) Not required for IRM or current site-wide groundwater monitoring program, poorly connected to groundwater table (Zone S1) S1 coverage (via MW-5, MW-162, MW-163, MW-395A, & MW-396A) S1 coverage (via MW-354A, MW-355A, MW-356A, & MW-428A) S1 coverage (via MW-9A, MW-196, MW-197, and MW-199) Not required for IRM or current site-wide groundwater monitoring program, poorly connected to groundwater table (Zone S1) (typically dry), adequate Zone S1 coverage (via MW-213B) S1 coverage (via MW-255B, MW-355A, MW-356A, MW-368A, MW-390A, & MW-392A) S1 coverage (via MW-354A, MW-356A, MW-357A, MW-368A, & MW-370A) S1 coverage (via MW-368A, MW-372A, MW-389A, & MW-390A) S1 coverage (via MW-368A, MW-372A, MW-389A, & MW-390A) S3 coverage (via MW-54, MW-56, MW-317C, MW-320C, MW-321C, & MW-323C) 1 of 1 TRC Job No Well Decommissioning Table

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6 DOT WEST HEADWALL DOT NORTH HEADWALL SPB-050 SPB-350 SPB-750 VD-US1 SPB-150 SPB-870 VD-100 SPB-1025 SB-510 SPB-1070 VD-400 SPB-1250/SB-880 MW-479C VD-775 VD-1000 SPB-1875 VD-1575 SPB-2260 VD-1870 SPB-2650 SPB-3030 SPB-3350 SPB-3650 EXPLANATION SPB-3800 SPB-3900 SPB-4450 SPB-4300 SPB-4880

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