Presentation on theme: "Basin Commision Meeting November 20, 2013 Coeur d’Alene, Idaho EPA and DEQ Team Represented by Bill Adams."— Presentation transcript:
1 Basin Commision Meeting November 20, 2013 Coeur d’Alene, Idaho EPA and DEQ Team Represented by Bill Adams
2 Summary of 2013 Work Property remediation – 130 Properties Paved roads in Box and Basin - 8 MilesRemedy protection & unpaved roadsRepositoriesLower Burke Canyon – 60% design completeNinemile WCA – ready for Interstate Waste in 2014CTP and CIA design work at 30%Lower Basin pilot projects – Selected two projects working on design of one.Basin Environmental Monitoring Plan (BEMP)
3 Property Remediation 130 properties completed PHD Lead Health Intervention Program outreachOver 360 children participated in testing this year (92 in Basin and 276A total of 15 of those children had blood-lead levels above 5 µg/dl.
4 Commercial Property Remediation by the Trust Property Remediation - 2 ParcelsShoshone county yard – Osburn (approx. 490,00 sq ft) – Out to Bid will start soonUS Silver parking lot – Silverton (approx. 130,00 sq ft)Work being conducted by Ferguson Construction
7 2013 REMEDY PROTECTION CONSTRUCTION PROJECTS Grouse Creek in SmeltervilleSierra Nevada in Wardner completedLittle Pine Creek in Pinehurst 2014Third Street Area in MullanDewey Street Area in MullanUnnamed Creek in SilvertonShields Gulch in Osburn 2014 (some work started in 2013)
12 LBCR Schedule Open House to present the 30% design – June 4th Wallace Few comments on design – response distributed on July 25thEvaluating several alternatives based on comments and waste volume needs60% Basis of Design – August 201390% Basis of Design – November 2013Ongoing groundwater monitoring – throughout 2013Construction planned for 2014
14 Other Repository Alternatives Expand LBCR to the WestExpand LBCR to the East toward creek and southEvaluate removal and replacement of SVNRT with increased capacityEvaluate potential expansion near Big Creek Repository – Site characterization started in Nov 2013.
16 East Fork of NinemileMost 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 WCAWhy Interstate FirstHigh in Watershed – Top Down ApproachWaste totally fills stream valleyParticulate loaderClose to WCAGood opportunity for restoration
17 EFNM Waste Consolidation Area Design for 1.3M cy of mine waste for all of Ninemile BasinPotential expansion for 2.0M cyPhased developmentInitial development in 2013 allows for placement of mine waste from I-C Rock Dumps in 2014WCA development has provided soil, woody material, and rock for construction of WCA, infrastructure, and reconstruction/restoration of remedial sites
19 BEMP UpdateEPA is planning to conduct an optimization of GW monitoring on OU2 and all other BEMP dataFWS collecting pre-RA data in EFNM and Canyon CreekOngoing evaluation of all data for lessons learned, trends, opportunities to streamline data collection
20 Lower Basin Pilot Projects Pilot Projects Selected and moving forward!With lots of help from locals – 46 ideas received from 24 individuals/entitiesFocusing on 2 projects at this timeA combined Riverbank and Beach Remediation Kahnderosa CampgroundWater Level Management Using Hydraulic Controls at location TBD
21 Riverbank & Beach Remediation at Kahnderosa Campground Objectives:Reduce potential exposure to people from contaminated material in banks and beachesIsolate contaminated material beneath clean and stable soilSupport recreational use & ecological habitatMeasure recontaminationMeasure and document stability
22 Water Level Management ObjectivesUse clean tributary flows to maintain higher water levelsDeter Waterfowl Use During Migration SeasonReduce contamination deposition during high flowsMonitor Waterfowl Usage and Feeding Patterns, Water Levels, Sediment Deposition Rates and Related Factors
23 Pilot Projects – Next Steps EPA working with landowners and eco resource folks will select and commence planning for the pilot projectsConstruction for both is planned for 2014Will Post Update to the EPA Website on These Projects
24 Lower Basin SamplingFocused Data Gathering to Better Define the Sub-bottomFocused Coring in the Floodplain to Update Depositional Rates/Concentrations
26 Design Concept Optimization and Modeling Reduce contaminant loading to surface waterMinimize infiltration of surface water into the GCSMinimize overall groundwater collection flow ratesMinimize O&M requirements (system maintenance and fouling)Maximize hydraulic isolation of the CIA and extent of hydraulic captureMaximize system flexibility
27 Extraction Well/Cutoff Wall 8,800-foot-long cutoff wallSeries of 10 extraction wellsFlow rate is more prescribed by wells at ~2,000 gpmFlow from SFCDR and lower confining layer isolated from wells by cutoff wall
28 Remedy EffectivenessNo-action dissolved zinc loading to SFCDR estimated to be ~540 lb/dayZinc loading under eastern OU 2 ~ 450 lb/dayZinc loading moving through groundwater system toward Smelterville Flats ~ 90 lb/dayEstimated effectiveness 65-90% reductionRange depends on concentration entering SFCDR after installation of slurry wall.
30 Budget UpdateCurrent Special Account Balance ~ $52 million w/out Hecla’s last paymentsTrust Balance ~ $504M (end of 3rd quarter) up $22M in last quarter.HQ funding this year $2M
31 Planned Trust Budget for 2014 Approximate Trust Budget - ~ $21 millionRemedy Protection in Box and BasinWCA and Interstate constructionPre-design data collection - NinemileProperty Remediation constructionRoads construction ($3.5M in Basin)Lower Basin Pilots constructionRepository OperationsLBCR construction
32 Planned Special Account Project Work for 2014 – Budget TBD Ongoing Property RemediationRemedy Protection in BoxPaved Roads Program in Box ($3.5M)Lower Basin data collection/modelingOversight , Admin, and Supporting ActivitiesBEMPCTP and CIA design completion
33 Summary of Hecla Settlement Funds (from 8/12 presentation) FY2011FY2012FY2013FY2014TotalEPA45,474,00034,145,00026,600,0007,700,000113,962,000Registry66MNRRT55,322,00011,382,0008,882,0002,566,00078,151,000Idaho Tribe5,138,000176,790,00045,527,00035,527,00010,263,000268,107,000Total does not include certain Superfund Interest payments - .69% to .74%. Numbers are rounded.This slide provides a summary of the funds from the settlement with Hecla. The registry account is being held to preserve funding for the long-term operation of the Central Water Treatment Plan. Funding identified as “Idaho” is for use by the Natural Resource Trustees for restoration activities. The Natural Resource Trustees consist of representatives of BLM, the Forest Service, USFWS, CDA Tribe, and the State of Idaho.
34 Status of Hecla Funds Amount of Settlement ~ $180M Amount received to date ~$138M ($66M + $72M)Amount in Court Registry ~$66MAmount in Special Account $52MDue in 2014 balance up to $42M Work completed to date from SA (includes other settlment funds)Property RemediationTechnical Support and RDSupport Agency AgreementsPaved Roads in Box
35 Special Account Funding Challenges Total Funds Available = $52M + $42MKey project commitments in Box that can’t be funded by Trust = $67MCompletion of CTP and GW Collection over 3 years -$36M (placed on contract in Jan 2015)Remedy Protection - $4MRoads - $27M over 6 yearsBalance of $27M for other site needs
36 Misc Updates Community Fill Plan Implementation Plan Update – advertized via , Basin Bulletin, facebook, placed in library – 30 day informal review