BRAC Inno BRAC Innovavationtion · PDF fileBRAC InnoBRAC Innovavationtion National Defense...
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BRAC InnovationBRAC InnovationNational DefenseNational Defense
Industrial AssociationIndustrial Association
Richmond, VirginiaRichmond, VirginiaApril 8, 2003April 8, 2003
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The BRAC ProcessThe BRAC ProcessTurning aTurning a
Sow’s EarSow’s Earinto ainto a
Silk PurseSilk Purse
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• Divestiture of DoD real estate
• Public and regulatoryacceptance
• Minimization of costs andongoing liability
BRAC GoalsBRAC Goals
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• Phytoremediation
• Constructed Wetlands
• Composting
• Landfill Redevelopment
• Microturbine Revenues
Beneficial ApproachesBeneficial Approaches
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PhytoremediationPhytoremediation
Use of plantsto remediate
contaminatedsoil and / or
groundwater.
Image by Gleba et al., 1999
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Phytoremediation: The ApproachesPhytoremediation: The ApproachesPhytoremediation: the use of plantsand soil amendments for the removalof contaminants from soil (greekphytos=plant)
Phytoextraction: the use of plantsand soil amendments for the removalof concentrated contaminants inroots and above-ground shoots
Phytostabilization: the use of plantsand soil amendments for chemicalsequestration and physicalcontainment
Multi-tier Approach: the use of morethan one of the above approaches
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Root zone
Certain plants and the bacteria associated with theirroot zones are capable of: selective uptake of
targeted heavy metals, degradation of hydrocarbons,breakdown of complex chemicals, and changes in
soil hydrology
Phytoremediation: The ProcessesPhytoremediation: The Processes
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Phytoremediation: The AdvantagesPhytoremediation: The Advantages
Cost:
Performance:
Other:
Low capital and operating costsMetal recycling provides further economicadvantages
Permanent treatment solutionIn situ application avoids excavationApplicable to a variety of contaminantsCan augment conventional remediation
Public acceptance; aesthetically pleasingCompatible with risk-based remediation
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SoilChemical Treatment $100-$500 Soil Washing $75-$200
Soil Flushing (in situ) $40-$190 Vitrification (reag) $75-$90
Vitrification (thermal) $250-$425 Thermal Desorp. $150-$500
Thermal Treatment $170-$300 Electrokinetics $20-$200
Incineration $200-$1500 Landfilling $100-$500
Phytoremediation $25-$100
Phytoremediation: Cost EffectivenessPhytoremediation: Cost Effectiveness
(all figures in dollar per ton)
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ArgonneArgonne National Laboratory West, National Laboratory West,Idaho Falls, IdahoIdaho Falls, Idaho
Description: Various sites at the Argonne NationalLaboratory are contaminated with wastes generatedfrom the scientific and engineering research facilities.
Contaminants: Heavy metals (chromium, mercury,selenium, silver, zinc)
Treatment: Establishment of Prairie Cascade hybridwillow, canola, and kochia
Results: Successful implementationof willow
Cost: Not provided
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Twin Cities Army AmmunitionTwin Cities Army AmmunitionPlant, Arden Hills, MinnesotaPlant, Arden Hills, Minnesota
Description: The Twin Cities Army Ammunition Plant(TCAAP) is 2,370-acre facility used forproduction and storage of small armsammunition and artillery shell materials.
Contaminants: Heavy metals (antimony, arsenic, barium,beryllium, chromium, lead, thallium)
Treatment: Crop establishment of corn and mustardsResults: Reduction of contaminants was limited due to
poor quality of soils and inhibited plantgrowth. Future remediation will includeapplication of fertilizers, irrigation, soilamendments as needed, and deep tilling.
Cost: $30.34 per cubic yard of soil per year
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Phytoremediation on Charles River, MDCOlmsted Greenway, Watertown, Massachusetts
Watertown Arsenal BRAC Site
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Mill Creek, Cincinnati,Phytoremediation Construction Detail
Geogrid Lift
Brush Layer
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2 Years after Construction—Effectiveremediation and high habitat value
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The use of plants to remediate contaminated soils inupland and riverbank areas…
…results in improved water quality and enhancedecological habitat value.
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Wetlands can effectively removeexplosives and trace metals from
surface and groundwater.(Best et al. 2000, Knight et al. 1999, Best et al. 1997, Priceet al. 1997, Goodrich-Mahoney 1996, Gupta et al. 1994)
Constructed WetlandsConstructed Wetlands
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• Binding tosoils,sediments,particulates
• Precipitation
• Uptake byplants,includingalgae andbacteria
Mechanisms for Explosives andMetal Removal
Anoxic SoilBURIAL
DECOMPOSITION
Plant Storage
Plant Uptake
Aerobic Soil
INFLOW
LIGHT
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Wetland Efficiencies for Removal
(Best et al. 2000)
TNT
RDX
TNB
HMX
24DNT
26DNT
79-99 %
50-99%
99%
50-99%
58%
61%
Cu
Cd
Al
Fe
Mn
Pb
63-96 %
70-99%-33-63%
58.2-80%
43-98%
65-83%(Kadlec and Knight 1996)
Explosives Heavy Metals
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• Explosive and metals toxicity forsubmersed and emergent vegetation
• Possibility of bioaccumulation• Long-term reliability for metals• Remediation• Limited research• “…an environmentally-friendly and cost-effective
alternative for traditional methods”Best et al. 2000
Constructed Wetlands: Issues
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The USACE has performed numerous studies toevaluate the effectiveness of wetland treatment forexplosive and heavy metals removal. Studiesinclude experiments in:
- Chattanooga, TN 2000
- Burlington, IA 1998
- Grand Island, NE
Constructed Wetlands: Case StudiesConstructed Wetlands: Case Studies
These studies included the evaluation of both surfaceand subsurface wetland systems.
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BRAC Site, BRAC Site, DevensDevens, Massachusetts, Massachusetts
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Devens: highpublic
satisfaction andsuccessful
results
Treatmentwetlands andcomposting
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PotentialTreatment for
Explosivesand OtherMilitary
Contamination
CompostingComposting
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(Peramaki 1999)
• Explosives
– TNT
– DNT
– RDX
– HMX
• Refinedpetroleum fuels
• Crude Oil• PAHs• Propellants• PCP
Compost Can Degrade . . .
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Courtesy of Cornell WMI
Composting Process
• Ex situ process
• Soils are mixedwith bulking agentsand soilamendments
• Aerobic process
• Microbes digestcontaminants
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• Metabolic activity ofthe microbes raises thetemperature of themixture to 55 – 65°C
• Process typically takes15 – 20 days
• The compost is thenremoved to a “curingarea” for severalmonths, after which itis ready for landapplication
Courtesy of Cornell WMI
Composting Process
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• 30% contaminated soil
• Bulking agents(wood chips, straw)
• Soil amendments(manure, alfalfa)
Typical Compost Mix
Courtesy of FRTR
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• Contamination to depths ofless than 20 feet
• Contaminants which arebiodegradable
• Contaminants which formstrong bonds with humicsubstances
Best Applications
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• High temperatures allowbioremediation during cold seasons
• High temperatures accelerate soilchemical reactions
• High humic content increases soilreactivity
• Simple and inexpensive• End product is non-toxic• Potential revenue from sale of
finished compost
Advantages
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• Contaminated during decommissioningof bombs in the 1950s and 1960s
• TNT, RDX and HMX
• Full-scale remediation
• Achieved non-detect levels
• Cost: $351/ton
• Saved $2.6 million over incineration
(Wright 1996, EPA 1997)
Umatilla Army Depot, OR
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• Contaminated by the disposal ofexplosives-laden water
• TNT, RDX, HMX, yellow-D• Full-scale pilot study• All explosives degraded to goal levels
within 28 days• Also degraded PCP in pallets used for
wood chips• Cost: $250/cu yd
(Brunner, 1999)
Hawthorne Army Depot, NV
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Other Military Sites Using Compostfor Remediation
• Pueblo Chemical Depot, CO• Sierra Army Depot, CA• Naval Surface Warfare Center, IN• Joliet Army Ammunition Plant, IL• Bangor Naval Submarine Base, WA• Louisiana Army Ammunition Plant, LA• Badger Army Ammunition Plant, WI• Tooele Army Depot, UT• Seymour Johnson Air Force Base, NC
(EPA 1997, Gray 1999, Block 2001)
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(EPA 1997)
USACE estimates that$200 million could be
saved by using compostto clean the remaining
US munitions sites acrossthe country.
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Landfill and Other ContaminatedSite Redevelopment
Brownfields
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• Former landfill sites• Range locations• Other areas with residual
contamination• Local Redevelopment
Authority / RestorationAdvisory Board concerns
BRAC InstallationBRAC InstallationTurnover ChallengesTurnover Challenges
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• Methane hazards
• Post-closure care O&M costs
• Differential settlement issues
• Buried hazardous wastes
Specific LandfillRedevelopment Issues
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Ø Built atop GoldenEagle Landfill
Ø Former petroleumrefinery
Ø 150,000 sfdepartment storewith parking
Ø Expansion inprogress
Ø LFG protection andGW investigation
Carson Town Center, CaliforniaLandfill Redevelopment
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Industry Hills Resort Complex, CaliforniaLandfill Redevelopment
Ø Built atoplandfill
Ø 400 roomSheraton Hotel
Ø Golf courses,tennis center,parking
Ø LFG systems –heat all hotwater
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Ironwood Sport Complex, Lorton, VirginiaLandfill Redevelopment
Ø Built atopmunicipallandfill
Ø Driving range,miniature golf,and battingcages
Ø LFG systemsand siteconsulting
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Ø Environmentalassessments,investigation,andremediation
Ø 276 sites
Ø Asbestos,USTs,historicalbuildings
Bank One Ballpark, Phoenix, ArizonaBrownfields Redevelopment
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Ø Landfillclosure andend-use plans
Ø Baseball andsoccer fields
Ø Nature walksand bike trails
Ø OverlooksDodgerStadium
Bishops Canyon Recreation ComplexLos Angeles, California
Brownfields Redevelopment
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Roger Penske Auto Raceway, Fontana, CaliforniaBrownfields Redevelopment
Ø Constructed 14-acremembrane cap
Ø In-situ soil vaporextraction
Ø On-site soiltreatment
Ø Off-site disposal:7,000 cy of soils,21,000 tons ofresiduals
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• Applicable to smallerlandfills (e.g., military)
• Tolerates lower methanecontent (e.g., 30% to 35%)
• Extremely low air emissions
• Sizes: from 30 to 250 kW
MicroturbineTechnology Characteristics
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• Total Capital Cost:
$1,800 to $3,000 per kW
• Long-Term O&M Cost:
2.0¢ to 2.5¢ per kWh
Microturbine Economics
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• Retail Deferral
• High Power Cost Region
• Multiple Units
• Need for Hot Water
• Availability of Incentives
Optimal Circumstances
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LFG Fired Microturbine Design &Design/Construct Experience
Location Size/Type On Line ScopeJamacha LF 300 kW June 01 DCSan Diego, CA HoneywellJamacha LF 280 kW Feb 02 DCSan Diego, CA I-ROII LF 420 kW July 02 DCMonterey Park, CA I-RAcme LF 280 kW July 02 DMartinez, CA I-RCalabasas LF 300 kW July 02 DCCalabasas, CA CapstoneEastern Regional LF 120 kW Oct 02 DTruckee, CA Capstone
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Air Force LandfillPower Generation Potential
• Fifteen Air Force landfills greater than10 acres in size are present at sevenbases in California
• Fourteen are closed and one is open
• Very preliminary landfill gas estimates:4,340 kW = $5.1M per year @ 13.5¢/kWhretail rate or $1.5M per year @ 4.0¢/kWhwholesale rate
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üBeneficial Use of SitesüEcological OutputsüUtilization of Problem
Resourcesü Improved Economicsü Favorable Public Relations
Enhanced Remediation Paradigm--Restoration
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üSites with dispersed / residualcontaminantsüParticularly challenging
landfill and other disposal sitesüSites with sensitive resourcesüHigh profile Public Relations
challenges
Opportunities?…..Opportunities?…..