Update by Kimberly Finch, NASA Ames Project Manager, to the Moffett Restoration Advisory Board

1. NASA AMES RESEARCH CENTER
NOVEMBER 2015
KIMBERLY FINCH
NASA AMES PROJECT MANAGER
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2. • FY16 Site Management Plan (SMP)
– Draft Final SMP under review; Final SMP: December 2015
• Community Involvement Plan (CIP): Sept. 2015
• AOI 6 Former Storm Drain Ditch
– Multiple soil removal actions conducted from 1990-2001
(lead and PCBs)
– Draft Remedial Action Completion Report (Oct 2015)
under review
• NASA VI area of responsibility – 7 buildings
– Draft Tier Response Evaluation Report (July 2015) under
review; Tiers 3B/3A (long-term monitoring)
NASA AMES UPDATE
NOVEMBER 2015 RAB
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3. Upcoming activities
• Land Use Control Implementation and Monitoring Plan
(FY16)
• VI monitoring NASA buildings
• AOI 14 Action Memorandum and Removal Action
NASA AMES UPDATE
NOVEMBER 2015 RAB
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4. Information: https://environment.arc.nasa.gov
NASA AMES UPDATE
NOVEMBER 2015 RAB
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5. AREA OF INVESTIGATION 14
REMOVAL ACTION
OVERVIEW
NOVEMBER 2015
KEVIN BRICKNELL, PE
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6.  Site Background
 Engineering Evaluation/ Cost Analysis
OVERVIEW
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 Action Memorandum
 Cleanup (removal action)

7. AOI 14 SITE BACKGROUND
.
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● Over 400 soil samples collected
from AOI 14 during various
investigations conducted from 1992
to 2014
● N217 and N217A Areas:
● 5.5 acres, native and fill
material
● Areas do not pose
unacceptable risk to human
and ecological receptors
● Former Soil Fill Area:
● 8 acres, fill material placed on
existing surface of stormwater
retention pond
● Area poses potential current
and future risk to human and
ecological receptors

8. • Fill material placed at the Former Soil Fill Area (FSFA) is
– contaminated with PCBs, DDT, and Lead
– potential source of contamination to surrounding stormwater pond (Navy
Installation Restoration (IR) Site 25)
REASON FOR REMOVAL ACTION AT AOI 14
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9. • NASA, with EPA and Water Board concurrence, is conducting a
non-time critical removal action (NTCRA) to prevent erosion of
contaminated soil from AOI 14 to adjacent Navy IR Site 25
REASON FOR REMOVAL ACTION AT AOI 14
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– Currently, silt fence in
place to prevent soil
erosion
• NTCRA intended to:
– Evaluate and address all
potential human and
ecological risks
– Serve as the final action
at AOI 14

10. • Engineering Evaluation/Cost Analysis (Final September 2015)
– Summarizes contaminants, potential risks, and exposure pathways
– Evaluates cleanup options for effectiveness, implementability, and cost
– 30-day Public Comment Period completed October 5, 2015
• Action Memorandum (Ongoing)
– Documents the cleanup decision process and identifies the selected cleanup option
• Removal Action (Targeted for September 2016 to March 2017)
– Removal Action Work Plan—design document
– Implements the cleanup action
AOI 14 TIMELINE
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11. Objectives:
• Prevent erosion of contaminated soil to protect wetland receptors
• Prevent terrestrial ecological receptor exposure to contaminated
surface and subsurface soil
• Prevent industrial worker exposure to contaminated surface and
subsurface soil
Cleanup Goals:
• Consistent with Site 25 cleanup goals for DDT, PCBs, Lead
REMOVAL ACTION OBJECTIVES AND CLEANUP GOALS
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12. • AOI 14 Engineering Evaluation/Cost Analysis evaluated and
compared three cleanup alternatives:
– Alternative 1: No Action
– Alternative 2: Soil Cover and institutional controls
– Alternative 3: Excavation and Off-site Disposal
EE/CA ALTERNATIVES EVALUATION
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13. Alternative 3: Excavation and Off-site Disposal
• Excavation of all fill material in the northern portion of the FSFA where
contaminant concentrations exceed cleanup goals
• Transportation of contaminated soil off site to an appropriate disposal facility
• Grading of disturbed areas for stormwater drainage, revegetation, and
habitat mitigation
NASA’S SELECTED ALTERNATIVE FOR AOI 14
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14. 14
Clean SoilDirty Soil
Excavate
Regrade
Native Soil
AOI 14 EXCAVATION

15. Implementation of Alternative 3 will:
• Allow complete onsite habitat mitigation and habitat improvement
RESULTS OF AOI 14 REMOVAL ACTION
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• Allow for
unrestricted site
use
• Require no long-
term O&M
• Serve as the final
action for AOI 14

16. • Finalize the Action Memorandum (April 2016)
• Removal Action Work Plan (August 2016)
• Implementation (September 2016 to March 2017)
• Removal Action Completion Report (October 2017)
NEXT STEPS
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17. QUESTIONS?
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