Former NWS Concord ENVIRONMENTAL STATE OF THE STATION

Former NWS Concord ENVIRONMENTAL STATE OF THE STATION Former Naval Weapons Station Concord Presented by Marc P. Smits – Navy BRAC Environmental Coordinator February 20, 2018

AGENDA • VISION AND MISSION • INSTALLATION RESTORATION PROGRAM SITES • QUESTIONS 2 BRAC Program Management Office

Vision and Mission Statements • VISION: Expedite environmental restoration for the reuse of Former Naval Weapons Station Concord • MISSION: Fast-track remediation of former Naval Weapons Station Concord to promote reuse and protect human health and the environment by working cooperatively with the regulatory agencies, the community, and the stakeholders 3 BRAC Program Management Office

Installation Restoration (IR) Program Sites • A total of 13 sites currently being investigated as part of the Naval Weapons Station Concord IR Program • Sites are in various phases of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Process • Goal is to reach the point in the process where the sites are environmentally suitable for transfer 4 BRAC Program Management Office

IR Program Sites PHASES OF THE CERCLA PROCESS Preliminary Assessment (PA) – Do we need to collect data? Site Inspection (SI) – Collect initial data: Do we need to investigate further? Remedial Investigation/Feasibility Study (RI/FS) – Collect more data: Do we need to do a cleanup and if so, what are our options? Proposed Plan (PP) – Based on everything we know, what is our preferred option? 5 BRAC Program Management Office

IR Program Sites PHASES OF THE CERCLA PROCESS Record of Decision (ROD) – Based on input from community, stakeholders, and regulators, select the best option. Remedial Design (RD) – How are we going to implement the best option? Remedial Action (RA) – Implement the best option. Site Closure (SC) – No further work required at the site. 6 BRAC Program Management Office

IR Program Sites IR SITES 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 7 Rocket Practice Area Runway Debris Area Red Rock Eagle’s Nest Guam Way IR Site 22 IR Site 24 A – Former Pistol Range IR Site 29 IR Site 41 – IA-100 Storage Area IR Site 42 (Bldg. 81) Bermed Area Former Inland Burn (FIB) Area Solid Waste Management Unit (SWMU) Sites BRAC Program Management Office

IR Program Sites Locations 8 BRAC Program Management Office 9/8/2021

IR Program Site – Rocket Practice Area • Approx. 45 acres • Used as a range for practice rockets • Fired from hill located near the pond • Latest fieldwork completed in Summer 2017 • SI Report scheduled to be issued Spring 2018 9 BRAC Program Management Office

IR Program Sites – Runway Debris Area • Approx. 167 acres • Airfield constructed in mid -1940 s • Aerial photographs show area used as storage areas • Munitions-related items found on the surface • SI fieldwork conducted in 2017 to evaluate site conditions • SI Report scheduled to be issued in Summer 2018 10 BRAC Program Management Office

IR Program Sites – Red Rock • Approx. 11 acres • Used for at least 10 years as a clean soil barrow area • Recently found munitions at site • RI fieldwork planned for Summer 2019 • Investigate nature and extent of material at Site 11 BRAC Program Management Office

Eagle’s Nest EOD • Approx. 2 acres • Used for emergency destruction/detonation of munitions • Completed fieldwork in Summer 2017 • Issued a RI/FS Report in Winter 2018 • RI/FS Report presents status of current conditions and evaluates next steps for Site 12 BRAC Program Management Office

IR Program Sites - Guam Way • Approx. 3 acres • Identified as a disposal site prior to 1949 • Addressing soil and groundwater concerns • Removal Action scheduled for Summer 2018 • FS Report to be issued after Removal Action 13 BRAC Program Management Office

IR Program Sites – IR Site 22 IR SITE 22 • Site is approximately 531 acres • Contains 116 ammunition bunkers used to store ammunition and explosives • Arsenic has been found within the surface soil • Next step is to prepare an FS to address arsenic in soil 14 BRAC Program Management Office

24 A – Former Pistol Range • Approx. 7 acres • Used as pistol/small arms range • In operation from early 1950 s - 2005 • Removal Action conducted to address soil and potential munitions • RI/FS to be issued Spring/Summer 2018 15 BRAC Program Management Office 9/8/2021

IR Program Sites – IR Site 29 • Approx. 6 acres • Waste generated from industrial activities • Groundwater and soil affected • Groundwater cleanup ongoing • Additional groundwater investigation planned for 2018 16 BRAC Program Management Office

IR Program Sites – IR Site 41 (IA-100 Storage Areas) • Approx. 11 acres • Area used for general maintenance/ storage areas • SI recommended further evaluation • Conducting RI fieldwork in Summer 2018 • Investigate nature and extent of material at Site 17 BRAC Program Management Office

IR Program Sites – IR Site 42 (Building 81) IR SITE 42 • Site is approximately 17 acres • Disposal of waste from industrial activities at Building 81 and associated buildings have affected the soil and groundwater • RI Report scheduled to be issued in Spring 2018 • Data collected during the RI will be utilized to identify and evaluate options for cleanup of soil and groundwater 18 BRAC Program Management Office

Bermed Area • Approx. 16 acres • Remote area used for small item munitions until 1959 • Proposed Plan (PP) issued in 2017 • Berm Removal and Munitions Removal recommended • Record of Decision (ROD) to be issued in Fall 2018 19 BRAC Program Management Office

IR Program Sites – FIB Area • Approx. 50 acres • Used for burn/ detonation of munitions • Operated from 1940 s - 1970 s • PP recommended institutional controls • ROD to be issued in Summer 2018 20 BRAC Program Management Office

IR Program Sites – SMWU Sites • Site is approximately 8 acres • The Solid Waste Management Units (SMWUs) included industrial facilities such as a fire station, a locomotive repair shop, a locomotive and railcar steam-cleaning facility, a metal shop, a welding shop, a forge shop, automotive repair shop, and a paint shop • The selected remedial action (RA) was air sparging, soil-vapor extraction and institutional controls • Cleanup goals for groundwater have been met 21 BRAC Program Management Office

Questions QUESTIONS? 22 BRAC Program Management Office

Acronyms BRAC CERCLA FIB IA IR PA PAH PBC PP RA RD RI/FS ROD SC SI SWMU 23 Base Realignment and Closure Comprehensive Environmental Response, Compensation, and Liability Act Former Inland Burn Area Inland Area Installation Restoration Preliminary Assessment Polycyclic Aromatic Hydrocarbons Public Benefit Conveyance Proposed Plan Remedial Action Remedial Design Remedial Investigation/Feasibility Study Record of Decision Site Closure Site Inspection Solid Waste Management Unit BRAC Program Management Office