Installation Restoration Site 28
In Situ Abiotic / Biotic Treatability Study
I l t tiImplementation
RAB Meeting
November 1...
Site 28
Area
2
IR Site 28 Treatability Study
Purpose of Treatability Study (TS)
Determine if in situ anaerobic biotic or combined abiotic...
Stage 1: Hot Spot Characterization
Hot Spot DelineationHot Spot Delineation
Further define lateral and vertical distributi...
Stage 2: Treatment Pilot Tests
Evaluate Two Processes/Three Treatment Technologies
Separately:Separately:
In Situ Anaerobi...
Site 28
Pilot Test
Area
6
ISABB - Emulsified OilISABB - Emulsified Oil
& SDC-9™
ISABA - EHC®
ISABB - Lactate & SDC-9™
IR Site 28 Treatability Study Implementation
Stage 1: Hot Spot CharacterizationStage 1: Hot Spot Characterization
March an...
Hot Spot Delineation
Goal: Further define lateral and vertical distribution ofGoal: Further define lateral and vertical di...
MIP Test Locations
Membrane Interface Probe (MIP)
11
MIP Installation
12
MIP Installation
13
Typical MIP Log
14
ECD PID FID
DNAPL Investigation
Goal: Evaluate for the potential presence of PCE DNAPLs in
the Former Building 88 Area and Traffic Isl...
Soil Core & NAPL FLUTe™ Test Locations
OilScreenSoil (Sudan IV)® Test
17
NAPL FLUTe™ Liner
18
NAPL FLUTe™ Liner Deployment
19
NAPL FLUTe™ Liner Dilation
20
NAPL FLUTe™ Liner Removal
21
NAPL FLUTe™ - Protective Liner Removal
22
NAPL FLUTe™ Liner Inspection – No Staining
23
Emulsified Oil & SDC-9™Emulsified Oil & SDC 9
EHC®
Lactate & SDC-9™
Observation Well Network &Observation Well Network & 
...
Former Building 88 Area Cross-Section
GW flow direction
Well W9-18 Area Cross-Section
GW flow directionGW flow direction
Traffic Island Area Cross-Section
GW flow direction
IR Site 28 Treatability Study Implementation
Stage 2: Treatment Pilot TestsStage 2: Treatment Pilot Tests
July and August ...
Observation Well Network Installation – June 2010
29
Well Installation – Traffic Island
30
Baseline Groundwater Monitoring Event - July 2010
31
Monitoring Parameters
• VOC• VOCs
PCE, TCE, DCE, VC, Ethene, Ethane, Acetylene
• Bi h i l I di t• Biogeochemical Indicator...
Bldg 88 Area - Total Chlorinated Ethenes, µg/L
GW flow direction
27 279 3 002 3 04927,279 3,002 3,049
4,306 3,764 4,521
Traffic Island Area - Total Chlorinated Ethenes, µg/L
GW flow direction
8724,1091,759
751469476
18,2453,614311
34
32,9504,...
Well W9-18 Area - Total Chlorinated Ethenes, µg/L
GW flow direction
3,158 6,375 3,049
2,381
2,727 7,816
35
Substrate Mixing Tank – Former Bldg 88 Area
36
Substrate Preparation
37
Substrate Mixing Tank – Traffic Island Area
38
Bioaugmentation
Addition of dechlorinating
i bi l ti t b t hmicrobial consortium to batch
mixing tank
Shaws Patented SDC...
Batch Tank – Traffic Island Area
Substrate Injection
Substrate Injection – Traffic Island
42
Substrate Injection Rigs
43
Substrate Injection – Traffic Island
44
Substrate Injection Tool
Pressure Activated Injection
Wilclear® & SDC-9™ Injection – Former Bldg 88 Area
• Original estimated sodium lactate demand for
t t t 1 060 lb (i l 4 ti...
Injection Layout – Former Bldg 88 Area
LactOil™ & SDC-9™ Injection – Traffic Island Area
• Target concentration of 8 000 mg/L emulsifiedTarget concentration of 8...
Injection Layout – Traffic Island Area
10 to 55 ft bgs intervalg
Injection Layout – Traffic Island Area
55 to 65 ft bgs intervalg
EHC® Injection – Well W9-18 Area
• Original target ~0.3% of EHC® by soil massOriginal target 0.3% of EHC by soil mass
(~4,...
Injection Layout – Well W9-18 Area
Post-Injection
Performance Groundwater Monitoring
• 5 post–injection events:
g
p j
 August 2010
 early November 2010
 l...
pH in Treatability Study Areas
W9-18Bldg 88Traffic Island
Treatability Study Wells
10.0
10.5
11.0
H Traffic Island - Emuls...
ORP in Treatability Study Areas
W9-18Bldg 88Traffic Island
Treatability Study Wells
200
300
Traffic Island - Emulsified Oi...
DO in Treatability Study Areas
W9-18Bldg 88Traffic Island
Treatability Study Wells
2.0
2.5
g/L) Traffic Island - Emulsifie...
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Site 28 In Situ Abiotic/Biotic Treatability Study Implementation

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Presentation to the Moffett Restoration Advisory Board November 18, 2010: Site 28 In Situ Abiotic/Biotic Treatability Study Implementation

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Site 28 In Situ Abiotic/Biotic Treatability Study Implementation

  1. 1. Installation Restoration Site 28 In Situ Abiotic / Biotic Treatability Study I l t tiImplementation RAB Meeting November 18 2010November 18, 2010 Former Naval Air Station Moffett Field, Moffett Field, California
  2. 2. Site 28 Area 2
  3. 3. IR Site 28 Treatability Study Purpose of Treatability Study (TS) Determine if in situ anaerobic biotic or combined abiotic/biotic treatment technologies are viable for remediating the remaining chlorinated ethenes (CEs) present in the upper andg ( ) p pp lower portions of the A-aquifer at IR Site 28. Treatability Study Method Conduct separate pilot tests in areas of highest CE concentrations at three areas of interest (Former Building 88, Traffic Island, and Well W9-18). Stage 1: Hot Spot Characterization Stage 2: Treatment Pilot Tests
  4. 4. Stage 1: Hot Spot Characterization Hot Spot DelineationHot Spot Delineation Further define lateral and vertical distribution of high concentration chlorinated ethenes (CEs) in the three areas of interest. Dense Non-Aqueous Phase Liquid (DNAPL) Investigation Evaluate whether PCE DNAPLs are present in the Former Building 88 Area and Traffic Island Area
  5. 5. Stage 2: Treatment Pilot Tests Evaluate Two Processes/Three Treatment Technologies Separately:Separately: In Situ Anaerobic Biostimulation with Bioaugmentation Process Sodium Lactate (Wilclear®) & Dechlorinating Microbial Consortium (SDC-9™)Sodium Lactate (Wilclear ) & Dechlorinating Microbial Consortium (SDC 9 ) Emulsified Vegetable Oil (LactOil™) & SDC-9™ In Situ Anaerobic Biotic/Abiotic Degradation Process Zero-valent iron with controlled-release carbon (EHC®) Concurrent Pilot Tests in Three High Concentration Areas: Traffic Island Area (LactOil™ & SDC-9™) Building 88 Area (Wilclear® & SDC-9™) Well W9-18 Area (EHC®)
  6. 6. Site 28 Pilot Test Area 6
  7. 7. ISABB - Emulsified OilISABB - Emulsified Oil & SDC-9™ ISABA - EHC® ISABB - Lactate & SDC-9™
  8. 8. IR Site 28 Treatability Study Implementation Stage 1: Hot Spot CharacterizationStage 1: Hot Spot Characterization March and April 2010p Hot Spot Delineation DNAPL Investigation
  9. 9. Hot Spot Delineation Goal: Further define lateral and vertical distribution ofGoal: Further define lateral and vertical distribution of high concentration chlorinated ethenes (CEs) • Membrane Interface Probe (MIP) Testing o Total depth of 65 feet below ground surface o 19 locations in Traffic Island Area o 12 locations in Former Building 88 Area o 4 locations in Well W9-18 Area
  10. 10. MIP Test Locations
  11. 11. Membrane Interface Probe (MIP) 11
  12. 12. MIP Installation 12
  13. 13. MIP Installation 13
  14. 14. Typical MIP Log 14 ECD PID FID
  15. 15. DNAPL Investigation Goal: Evaluate for the potential presence of PCE DNAPLs in the Former Building 88 Area and Traffic Island Area • Continuous Soil Cores o Adjacent to MIP test with greatest detector responses o Visual observation and PID scanning o Select OilScreenSoil (Sudan IV)® Screening Tests • H d h bi Fl ibl M b T ti• Hydrophobic Flexible Membrane Testing o NAPL FLUTeTM Liner o Adjacent to continuous soil coreso Adjacent to continuous soil cores • 1 location in Former Bldg 88 Area; 2 locations in Traffic Island Area • Maximum depth of 65 feet below ground surface • No evidence of DNAPLs encountered
  16. 16. Soil Core & NAPL FLUTe™ Test Locations
  17. 17. OilScreenSoil (Sudan IV)® Test 17
  18. 18. NAPL FLUTe™ Liner 18
  19. 19. NAPL FLUTe™ Liner Deployment 19
  20. 20. NAPL FLUTe™ Liner Dilation 20
  21. 21. NAPL FLUTe™ Liner Removal 21
  22. 22. NAPL FLUTe™ - Protective Liner Removal 22
  23. 23. NAPL FLUTe™ Liner Inspection – No Staining 23
  24. 24. Emulsified Oil & SDC-9™Emulsified Oil & SDC 9 EHC® Lactate & SDC-9™ Observation Well Network &Observation Well Network &  Injection Grid Layout
  25. 25. Former Building 88 Area Cross-Section GW flow direction
  26. 26. Well W9-18 Area Cross-Section GW flow directionGW flow direction
  27. 27. Traffic Island Area Cross-Section GW flow direction
  28. 28. IR Site 28 Treatability Study Implementation Stage 2: Treatment Pilot TestsStage 2: Treatment Pilot Tests July and August 2010y g  Observation Well Network Installation  Baseline Groundwater Monitoring Event  Substrate Preparation  Substrate Injection Substrate Injection  Post-Injection Performance Monitoring
  29. 29. Observation Well Network Installation – June 2010 29
  30. 30. Well Installation – Traffic Island 30
  31. 31. Baseline Groundwater Monitoring Event - July 2010 31
  32. 32. Monitoring Parameters • VOC• VOCs PCE, TCE, DCE, VC, Ethene, Ethane, Acetylene • Bi h i l I di t• Biogeochemical Indicators DO, Nitrate, Arsenic, Manganese, Iron, Sulfate, Methane • Organic Substrate Indicators• Organic Substrate Indicators TOC, Alkalinity, and Volatile Fatty Acids • Physical• Physical pH, ORP, Specific Conductance, Turbidity, Temperature • BiologicalBiological Dehalococcoides sp
  33. 33. Bldg 88 Area - Total Chlorinated Ethenes, µg/L GW flow direction 27 279 3 002 3 04927,279 3,002 3,049 4,306 3,764 4,521
  34. 34. Traffic Island Area - Total Chlorinated Ethenes, µg/L GW flow direction 8724,1091,759 751469476 18,2453,614311 34 32,9504,62336,125
  35. 35. Well W9-18 Area - Total Chlorinated Ethenes, µg/L GW flow direction 3,158 6,375 3,049 2,381 2,727 7,816 35
  36. 36. Substrate Mixing Tank – Former Bldg 88 Area 36
  37. 37. Substrate Preparation 37
  38. 38. Substrate Mixing Tank – Traffic Island Area 38
  39. 39. Bioaugmentation Addition of dechlorinating i bi l ti t b t hmicrobial consortium to batch mixing tank Shaws Patented SDC-9™Shaws Patented SDC 9 Contains Dehalococcoides sp Naturally occurring microbes (not engineered) Injected at hundreds of sitesInjected at hundreds of sites Native to California 39 Injected at Former Building 88 Area and Traffic Island Area
  40. 40. Batch Tank – Traffic Island Area
  41. 41. Substrate Injection
  42. 42. Substrate Injection – Traffic Island 42
  43. 43. Substrate Injection Rigs 43
  44. 44. Substrate Injection – Traffic Island 44
  45. 45. Substrate Injection Tool
  46. 46. Pressure Activated Injection
  47. 47. Wilclear® & SDC-9™ Injection – Former Bldg 88 Area • Original estimated sodium lactate demand for t t t 1 060 lb (i l 4 ti f t f t )treatment area ~1,060 lbs (incl. 4 times safety factor) • Due to anticipated high pH replaced 184 lbs of lactate i h 55 lb f l i idwith 55 lbs of lactic acid • 876 lbs of lactate with 55 lbs of lactic acid injected • ~8,000 gallons of pre-treated GW from WATS injected • 34 L of SDC-9 injected to generate a target concentration of 1x107 cells DHC/liter • 10 points, 35 to 60 ft bgs
  48. 48. Injection Layout – Former Bldg 88 Area
  49. 49. LactOil™ & SDC-9™ Injection – Traffic Island Area • Target concentration of 8 000 mg/L emulsifiedTarget concentration of 8,000 mg/L emulsified vegetable oil in GW • 3 190 gallons of LactOil™ injected3,190 gallons of LactOil injected • ~28,000 gallons of pre-treated GW from WATS injected • 119 L of SDC-9™ injected to generate a target concentration of 1x107 cells DHC/liter • 15 points, 10 to 65 ft bgs
  50. 50. Injection Layout – Traffic Island Area 10 to 55 ft bgs intervalg
  51. 51. Injection Layout – Traffic Island Area 55 to 65 ft bgs intervalg
  52. 52. EHC® Injection – Well W9-18 Area • Original target ~0.3% of EHC® by soil massOriginal target 0.3% of EHC by soil mass (~4,000 lbs EHC®) • Doubled the dose to ~8,000 lbs EHC® based onDoubled the dose to 8,000 lbs EHC based on IR Site 26 results • ~8 000 lbs of EHC® injected~8,000 lbs of EHC® injected • ~2,500 gallons of hydrant water injected • No bioaugmentation with SDC-9™ • 4 points 10 to 30 ft bgs• 4 points, 10 to 30 ft bgs
  53. 53. Injection Layout – Well W9-18 Area
  54. 54. Post-Injection Performance Groundwater Monitoring • 5 post–injection events: g p j  August 2010  early November 2010  late January 2010  mid April 2011  late June 2011 •All 24 observation wells + 3 monitoring wells •Same analytical parameters as baseline event  VOCs, Biogeochemical Indicators, Organic Substrate Indicators, Physical, and Biological
  55. 55. pH in Treatability Study Areas W9-18Bldg 88Traffic Island Treatability Study Wells 10.0 10.5 11.0 H Traffic Island - Emulsified Oil pH 28OW-13 28OW-14 28OW-15 28OW-01 28OW-02 28OW-03 28OW-04 28OW-05 28OW-06 7.5 8.0 8.5 9.0 9.5 dardUnitsforpH 28OW-16 28OW-17 28OW-18 28OW-07 28OW-08 28OW-09 28OW-10 28OW-11 28OW-125.0 5.5 6.0 6.5 7.0 Stand W9-18 W9-29 W9-42 W9-18 Area - EHC® pH 8 0 Building 88 - Lactate pH 0 20 40 60 80 100 Days (Day 0 = August 16, 2010) 10 11 12 orpH p 7.0 7.5 8.0 sforpH 7 8 9 StandardUnitsfo 5 5 6.0 6.5 StandardUnits 5 6 0 20 40 60 80 100 S Days (Day 0 = August 24, 2010) 5.0 5.5 0 20 40 60 80 100 120 Days (Day 0 = August 2, 2010)
  56. 56. ORP in Treatability Study Areas W9-18Bldg 88Traffic Island Treatability Study Wells 200 300 Traffic Island - Emulsified Oil Oxidation-Reduction Potential 28OW-13 28OW-14 28OW-15 28OW-01 28OW-02 28OW-03 28OW-04 28OW-05 28OW-06-100 0 100 milliVolts 28OW-16 28OW-17 28OW-18 28OW-07 28OW-08 28OW-09 28OW-10 28OW-11 28OW-12-400 -300 -200 W9-18 W9-29 W9-42 W9-18 Area - EHC® Oxidation-Reduction Potential 300 Building 88 - Lactate Oxidation-Reduction Potential 0 20 40 60 80 100 Days (Day 0 = August 16, 2010) 100 200 300 olts 100 200 300 olts -200 -100 0 milliVo -200 -100 0 milliVo 56 -400 -300 0 20 40 60 80 100 Days (Day 0 = August 24, 2010) -400 -300 0 20 40 60 80 100 120 Days (Day 0 = August 2, 2010)
  57. 57. DO in Treatability Study Areas W9-18Bldg 88Traffic Island Treatability Study Wells 2.0 2.5 g/L) Traffic Island - Emulsified Oil Dissolved Oxygen 28OW-13 28OW-14 28OW-15 28OW-01 28OW-02 28OW-03 28OW-04 28OW-05 28OW-06 1.0 1.5 oncentration(mg 28OW-16 28OW-17 28OW-18 28OW-07 28OW-08 28OW-09 28OW-10 28OW-11 28OW-120.0 0.5 Co W9-18 W9-29 W9-42 W9-18 Area - EHC® Dissolved Oxygen 1 8 Building 88 ‐ Lactate Dissolved Oxygen 0 20 40 60 80 100 Days (Day 0 = August 16, 2010) 2.5 3.0 3.5 (mg/L)1.2 1.4 1.6 1.8 (mg/L) 1.0 1.5 2.0 Concentration( 0.4 0.6 0.8 1.0 Concentration  57 0.0 0.5 0 20 40 60 80 100 Days (Day 0 = August 24, 2010) 0.0 0.2 0 20 40 60 80 100 120 Days (Day 0 = August 2, 2010)
  58. 58. Questions ?

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