Hangar One Update to the Moffett RAB


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Presentation to the Moffett Restoration Advisory Board May 12, 2011.

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Hangar One Update to the Moffett RAB

  1. 1. Former NAS Moffett FieldHangar 1 Removal Action Update Bryce Bartelma, PG Navy BRAC PMO West May 12, 2011 RAB Meeting 1
  2. 2. Presentation Overview• P j t Obj ti Project Objective• Progress Update  Biological Monitoring  Scaffolding Installation  Storm Water Protection  Roof, Redwood, Siding &  Air Monitoring Window Removal  Historic Miti ti Hi t i Mitigation  Washing & CM15 Coating  Structural Steel Repairs• Future Activities• Schedule• Questions 2
  3. 3. Project Objective• Control release of PCBs from Hangar 1 in accordance with EE/CA (July 2008) and Action Memorandum (December 2008)  Demolition of interior structures  Removal of contaminated siding  Application of weather-resistant coating to steel frame 3
  4. 4. Continued Biological Monitoring• Weekly observation of Burrowing Owls• I Inspection of bi l i l activity inside ti f biological ti it i id and outside of hangar• Weekly reports to NASA and regulators• No observed impacts to protected species Owl Buffer Fence 4
  5. 5. Continued Storm Water Protection• S di Sediment removed t d from storm water trench and plugged p gg• Plastic liner placed over bare soil areas• Silt barriers placed l b l d around storm drains• Paved areas vacuumed prior to storm events 5
  6. 6. Continued Air Monitoring• Continuous air monitoring during removal action activities• Three levels of air monitoring – W k Workers – Work areas – Site perimeter• Monitoring coordinated with NASA• Weekly reports provided to agencies and public p• Data demonstrates control of air emissions• NASA conducting air monitoring at nearby buildings 6
  7. 7. Turnover of Historic Artifacts to NASA 7
  8. 8. Hangar 1 Interactive CD• Provides interviews and narrated history• Navy and NASA working together to develop final CD• Copies to be available to RAB, local schools, and library. Additional copies available for purchase il bl f h from the Moffett Field Museum 8
  9. 9. Structural Steel Repairs• Structural engineers inspect and document missing steel• Replaced 5 steel members• Inspected by Navy, Exeltech and AMEC on 2/28/11 9
  10. 10. Scaffolding Installation 10
  11. 11. Quick Deck® – Suspended Scaffold • Stable platform for workers to access upper roof area of hangar • Better control of contaminants (use of plastic sheeting) 11
  12. 12. Swing Stage®• Added safety measure allowing two additional workers to assist interior workers with removal of panels, redwood, and windows• Materials are lowered to l l d ground for ultimate disposal off-site p• Wind screens and monitors, air samplers & BMPs at g o nd surface ground s face 12
  13. 13. Mansard Roof Panels, Redwood Decking, and Silver Siding Removal g• Mansard Roof• Fi t mansard panel First d l removed from Zone 1 on April 21 p• Redwood decking and silver siding removal 13
  14. 14. Damaged Corrugated Windows• NASA determined windows not feasible to keep due to deteriorating condition• Navy will salvage a small number of corrugated window panes that are in good g p g condition for NASA 14
  15. 15. Washing & Coating – Carbomastic 15• Initiated Zone 1 washing and coating i• Capture and treatment of wash water containing PCB dust• Single application of 4-6 mils of CM 15 provides b f d better service life and encapsulation p p properties 15
  16. 16. Future Activities• Continued biological & air monitoring• Scaffold installation in northern zones• Continued siding removal, washing of steel and hi f t l d coating• Continued Community Outreach 16
  17. 17. Schedule• Fieldwork in zones 1 – 6 Ongoing• C Complete fieldwork, l t fi ld k confirmation sampling and demobilize Early 2012• Submit After Action Completion Report p p Spring/Summer 2012 17
  18. 18. Questions? Point of Contact: Scott Anderson, P.E. BRAC Environmental Coordinator ( (619) 532-0938 ) scott.d.anderson@navy.mil 18