WelcomePetroleum Site 14 UpdateFormer Naval Air Station     Moffett Field     M ff    Fi ldWilson Doctor - Navy Project Ma...
Presentation Overview• Site 14 background• Recent Site 14 activities• Site characteristics• Upcoming cleanup activities• S...
Site 14 Background• Former Department of Defense motor vehicle gasoline station• Two former 5,000 gallon underground stora...
Recent Site 14 Activities• 2008 to present: Additional sampling to characterize site• March 2010: Discovered uncharacteriz...
Site CharacteristicsExtent of TPH-G                Extent of BenzeneConcentrations                 Concentrations inin Gro...
Air Sparging            )•   Inject air into the ground using air sparge    wells and an air compressor•   Injected air in...
Well Locations                 7
Site Strategy                                       Biosparging System Operation       System       S t   Operation/System...
9
10
11
Thank You            12
Upcoming SlideShare
Loading in...5
×

Moffett RAB Site 14 Update

329

Published on

Petroleum Site 14 update to the Moffett Restoration Advisory Board, March 10, 2011, by Wilson Doctor, Navy Project Manager

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
329
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Moffett RAB Site 14 Update

  1. 1. WelcomePetroleum Site 14 UpdateFormer Naval Air Station Moffett Field M ff Fi ldWilson Doctor - Navy Project Manager 3/10/11 RAB meeting
  2. 2. Presentation Overview• Site 14 background• Recent Site 14 activities• Site characteristics• Upcoming cleanup activities• Site strategy
  3. 3. Site 14 Background• Former Department of Defense motor vehicle gasoline station• Two former 5,000 gallon underground storage tanks (USTs) removed in 1986 – Stored unleaded gasoline and diesel fuel• 1986 to 2006: Navy conducted soil sampling groundwater sampling, sampling, and treatability studies 3
  4. 4. Recent Site 14 Activities• 2008 to present: Additional sampling to characterize site• March 2010: Discovered uncharacterized area of petroleum constituents in groundwater• June 2010: Conducted groundwater sampling – Petroleum constituents related to Site 14• Based on findings, low pressure air sparge treatment system design was modified to treat this area – January 31 to March 18, 2011: Install treatment system 4
  5. 5. Site CharacteristicsExtent of TPH-G Extent of BenzeneConcentrations Concentrations inin Groundwater Groundwater 5
  6. 6. Air Sparging )• Inject air into the ground using air sparge wells and an air compressor• Injected air increases oxygen levels and promotes biodegradation of petroleum constituents in groundwater • Sparge wells will inject air into sandy water- bearing layer between 18 and 23 ft bgs to achieve treatment • The system is expected to operate for one year followed by a monitoring period 6
  7. 7. Well Locations 7
  8. 8. Site Strategy Biosparging System Operation System S t Operation/System Optimization no Rebound yes Within Acceptable Limits? no no Asymptotic Remediation yes Shut Biosparging System Conditions Down and Evaluate Goals Achieved? Realized? Contaminant Rebound yes yes Implement MNA to Cleanup Goals Site Closure Achieve Cleanup Goals Achieved? noMonitored Natural Attenuation 8
  9. 9. 9
  10. 10. 10
  11. 11. 11
  12. 12. Thank You 12
  1. Gostou de algum slide específico?

    Recortar slides é uma maneira fácil de colecionar informações para acessar mais tarde.

×