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

1. Former NAS Moffett Field
Hangar 1 Removal Action Update
Bryce Bartelma, PG
Navy BRAC PMO West
May 12, 2011
RAB Meeting
1

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. 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. 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. 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
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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. Turnover of Historic Artifacts to NASA
7

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. Structural Steel Repairs
• Structural engineers inspect
and document missing steel
• Replaced 5 steel members
• Inspected by Navy, Exeltech
and AMEC on 2/28/11
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10. Scaffolding Installation
10

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. 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. 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. 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
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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. 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
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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
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18. Questions?
Point of Contact:
Scott Anderson, P.E.
BRAC Environmental
Coordinator
(
(619) 532-0938
)
scott.d.anderson@navy.mil
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