GROUNDWATER MONITORING PLAN 2

This document describes a groundwater-monitoring program for the Closure Group #26, Low-Level 4 Burial Ground, “Green Islands”. This “Green Islands ” Closure Group is a regulated unit under the 5 Resource Conservation and Recovery Act of 1976 (RCRA) and the Hazardous Waste Management Act 6 (Revised Code of Washington [RCW] 70.105) and is subject to groundwater monitoring requirements 7 pursuant to Washington Administrative Code (WAC 173-303-645). 8 The “Green Islands ” Closure Group is physically located within the Low Level Burial Grounds (LLBG) 9 as is described in Addendum C. The LLBG are covered by an interim status groundwater monitoring 10 program, and that program also covers the “Green Islands ” and will be used in this permit to cover the 11 groundwater monitoring requirements for this Closure Unit. The groundwater monitoring program is 12 described in four documents, one for each Waste Management Area (WMA), that are attached in this 13 addendum. The following list describes the attached files: 1