Basin Commision Meeting November 20, 2013 Coeur d’Alene, Idaho EPA and DEQ Team Represented by...
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Transcript of Basin Commision Meeting November 20, 2013 Coeur d’Alene, Idaho EPA and DEQ Team Represented by...
Basin Commision MeetingNovember 20, 2013
Coeur d’Alene, Idaho
EPA and DEQ TeamRepresented by Bill Adams
Summary of 2013 Work Property remediation – 130 Properties Paved roads in Box and Basin - 8 Miles Remedy protection & unpaved roads Repositories
Lower Burke Canyon – 60% design complete Ninemile WCA – ready for Interstate Waste in 2014
CTP and CIA design work at 30% Lower Basin pilot projects – Selected two
projects working on design of one. Basin Environmental Monitoring Plan (BEMP)
Property Remediation
130 properties completed PHD Lead Health
Intervention Program outreach
Over 360 children participated in testing this year (92 in Basin and 276
A total of 15 of those children had blood-lead levels above 5 µg/dl.
Commercial Property Remediation by the Trust
Property Remediation - 2 Parcels
Shoshone county yard – Osburn (approx. 490,00 sq ft) – Out to Bid will start soon
US Silver parking lot – Silverton (approx. 130,00 sq ft)
Work being conducted by Ferguson Construction
2013 REMEDY PROTECTION CONSTRUCTION PROJECTS
Grouse Creek in Smelterville Sierra Nevada in Wardner completed Little Pine Creek in Pinehurst 2014 Third Street Area in Mullan Dewey Street Area in Mullan Unnamed Creek in Silverton Shields Gulch in Osburn 2014 (some work
started in 2013)
LBCR Schedule Open House to present the 30% design – June 4th
Wallace Few comments on design – response distributed on
July 25th
Evaluating several alternatives based on comments and waste volume needs
60% Basis of Design – August 2013 90% Basis of Design – November 2013 Ongoing groundwater monitoring – throughout 2013 Construction planned for 2014
Other Repository Alternatives
Expand LBCR to the West Expand LBCR to the East toward creek
and south Evaluate removal and replacement of
SVNRT with increased capacity Evaluate potential expansion near Big
Creek Repository – Site characterization started in Nov 2013.
East Fork of Ninemile Most impacted tributary in the Upper Basin- 64 times
Water Quality Standards, up to 480 lbs per day of Zinc below Success and High particulate lead to South Fork
In RODA capping for many sites and was changed to Excavation/local WCA
Why Interstate First High in Watershed – Top Down Approach Waste totally fills stream valley Particulate loader Close to WCA Good opportunity for restoration
EFNM Waste Consolidation Area Design for 1.3M cy of mine waste for all of
Ninemile Basin Potential expansion for 2.0M cy Phased development Initial development in 2013 allows for placement
of mine waste from I-C Rock Dumps in 2014 WCA development has provided soil, woody
material, and rock for construction of WCA, infrastructure, and reconstruction/restoration of remedial sites
BEMP Update
EPA is planning to conduct an optimization of GW monitoring on OU2 and all other BEMP data
FWS collecting pre-RA data in EFNM and Canyon Creek
Ongoing evaluation of all data for lessons learned, trends, opportunities to streamline data collection
Lower Basin Pilot Projects
Pilot Projects Selected and moving forward!
With lots of help from locals – 46 ideas received from 24 individuals/entities
Focusing on 2 projects at this time A combined Riverbank and Beach
Remediation Kahnderosa Campground Water Level Management Using Hydraulic
Controls at location TBD
Riverbank & Beach Remediation at Kahnderosa Campground
Objectives: Reduce potential exposure
to people from contaminated material in banks and beaches
Isolate contaminated material beneath clean and stable soil
Support recreational use & ecological habitat
Measure recontamination Measure and document
stability
Water Level Management
Objectives Use clean tributary flows to maintain higher
water levels Deter Waterfowl Use During Migration Season Reduce contamination deposition during high
flows Monitor Waterfowl Usage and Feeding
Patterns, Water Levels, Sediment Deposition Rates and Related Factors
Pilot Projects – Next Steps
EPA working with landowners and eco resource folks will select and commence planning for the pilot projects
Construction for both is planned for 2014 Will Post Update to the EPA Website on
These Projects
Lower Basin Sampling
Focused Data Gathering to Better Define the Sub-bottom
Focused Coring in the Floodplain to Update Depositional Rates/Concentrations
Design Concept Optimization and Modeling
Reduce contaminant loading to surface water Minimize infiltration of surface water into the
GCS Minimize overall groundwater collection flow
rates Minimize O&M requirements (system
maintenance and fouling) Maximize hydraulic isolation of the CIA and
extent of hydraulic capture Maximize system flexibility
26
Extraction Well/Cutoff Wall
8,800-foot-long cutoff wall Series of 10 extraction wells Flow rate is more prescribed by wells at
~2,000 gpm Flow from SFCDR and lower confining
layer isolated from wells by cutoff wall
27
Remedy Effectiveness
No-action dissolved zinc loading to SFCDR estimated to be ~540 lb/day Zinc loading under eastern OU 2 ~ 450 lb/day Zinc loading moving through groundwater
system toward Smelterville Flats ~ 90 lb/day Estimated effectiveness 65-90% reduction
Range depends on concentration entering SFCDR after installation of slurry wall.
28
Budget Update Current Special Account Balance ~ $52
million w/out Hecla’s last payments Trust Balance ~ $504M (end of 3rd quarter)
up $22M in last quarter. HQ funding this year $2M
Planned Trust Budget for 2014
Approximate Trust Budget - ~ $21 million Remedy Protection in Box and Basin WCA and Interstate construction Pre-design data collection - Ninemile Property Remediation construction Roads construction ($3.5M in Basin) Lower Basin Pilots construction Repository Operations LBCR construction
Planned Special Account Project Work for 2014 – Budget TBD
Ongoing Property Remediation Remedy Protection in Box Paved Roads Program in Box ($3.5M) Lower Basin data collection/modeling Oversight , Admin, and Supporting Activities BEMP CTP and CIA design completion
Summary of Hecla Settlement Funds (from 8/12 presentation)
FY2011 FY2012 FY2013 FY2014 Total
EPA 45,474,000 34,145,000 26,600,000 7,700,000 113,962,000
Registry 66M
NRRT 55,322,000 11,382,000 8,882,000 2,566,000 78,151,000
Idaho Tribe
5,138,000
Total 176,790,000 45,527,000 35,527,000 10,263,000 268,107,000
Total does not include certain Superfund Interest payments - .69% to .74%. Numbers are rounded.
Status of Hecla Funds Amount of Settlement ~ $180M Amount received to date ~$138M ($66M +
$72M) Amount in Court Registry ~$66M Amount in Special Account $52M Due in 2014 balance up to $42M
Work completed to date from SA (includes other settlment funds)
Property Remediation Technical Support and RD Support Agency Agreements Paved Roads in Box
Special Account Funding Challenges
Total Funds Available = $52M + $42M Key project commitments in Box that can’t
be funded by Trust = $67M Completion of CTP and GW Collection over 3
years -$36M (placed on contract in Jan 2015) Remedy Protection - $4M Roads - $27M over 6 years
Balance of $27M for other site needs
Misc Updates
Community Fill Plan Implementation Plan Update – advertized
via email, Basin Bulletin, facebook, placed in library – 30 day informal review