november 17, 2015 application of astm’s greener cleanup guide to a superfund site in oregon...
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November 17, 2015
Application of ASTM’s Greener Cleanup Guide to a
Superfund Site in OregonResults and Take-Home Lessons
Beth Sheldrake, Manager, Superfund Program, EPA Region 10.Michael E. Miller, Principal Environmental Chemist, CDM Smith.
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Striving for Greener Cleanups
Policies (August 2009) OSWER Principles for Greener Cleanup National Superfund Green Remediation Strategy Region 10 Clean and Green Policy
Tools Best Management Practice (BMP) Fact Sheets (2008 – 2013) ASTM’s Standard Guide for Greener Cleanups (November 2013)
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EPA Leading by Example
Options for EPA-lead Sites: Include reference to Regional “Clean and Green” policy in bid
documents
EPA applies ASTM guide and identifies BMPs in bid documents
EPA asks bidders to identify BMPs
EPA asks bidders to apply ASTM guide BMPs after winning bid, before construction
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Application of ASTM Standard Guide
Applicability to the Site – Opportunity Assessment Rate of Return – BMP Prioritization
High Priority – High footprint reduction and high implementability
Medium Priority – High footprint reduction and low implementability or low footprint and high implementability
Low Priority – Low footprint reduction and low implementability
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North Ridge Estates Site: BMP Evaluation
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North Ridge Estates Site
South-central Oregon, high desert Residential subdivision, 3 mi north of Klamath Falls
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Topography
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Site History
1940s military barracks Improper building demolition during residential
development Asbestos containing materials (ACM)
waste piles, burial pits, surface/sub-surface dispersal 1993: began building houses 1994-2002: properties sold to homeowners 2003-2011: emergency removals ACM
Re-exposure by frost heaving & erosion Not a permanent solution
~ 300,000 cubic yards asbestos contaminated soil remain
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Remedial Action Objectives Mitigate direct contact and inhalation of asbestos fibers. Control migration and spread of asbestos.
Selected Remedy Excavation & consolidation of ACM in on-site repositories Building interior cleaning Post-excavation capping
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Best Management Practice (BMP) Selection
Purpose: minimize impacts 160+ BMPs – complete list in ASTM Standard 30 BMPs applicable to asbestos dig & haul
Equipment and fuel Materials use
16 final BMPs for possible incorporation into remedial design
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Greatest Impacts from Remedy Implementation
Fuel consumption Earth moving Transportation
Material use Backfill Revegetation Equipment Residential houses Recovered materials
Site preparation
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BMPs: Diesel Emission Control Technology
EPA Off-Highway Emission Standards
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BMPs: Diesel Non-road Construction Equipment
Engines must meet at least EPA Tier 2 non-road emission standards
Year 1: ≥ 25% of the equipment Meet Tier 4, or Retro-fit for 85% reduction in PM emissions
Years 2 and 3: ≥ 50% of the equip. Meet Tier 4, or Retro-fit for 85% reduction in PM emissions
End of project
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Diesel On-road Vehicles
At least 90% of diesel on-road vehicles :
Engines that meet EPA 2007 on-road emissions stds., or
Emission control technology to reduce PM emissions by at least 85%
+ Idling reduction plan for all diesel vehicles
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BMPs: Materials
BMP Implementation Metrics
Use recycled content Crush concrete barracks foundations for use as marker barrier
Amount re-used vs. non re-used concrete
Biodegradable, recycled seed matting
Straw Track and report
Compost instead of chemical fertilizers
Plant material, manure, or biosolids
Tons of compost
Use equipment and products that can be re-used or recycled
Select equipment that can be re-used. Recycle waste.
Track waste streams
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BMPs: Site Preparation/Land Restoration
BMP Implementation Metrics
Revegetate quickly & with native species
Plant at the end of each field season
Track and report
Native, drought resistant plant cover. Preserve biodiversity/ecosystem services.
Native seed mixtures % planting with native seeds
On-site or nearby sources of backfill
Local borrow source Track and report
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More BMPs
BMP Implementation Metrics
Reuse existing buildings Use an abandoned house for office & storage. Redevelopment includes cleaning & reselling abandoned houses.
Built into design
Reuse/recycle recovered materials
Recycle scrap metal, fuel, lubricants & removed trees. Crushed concrete foundations for marker barrier.
Track and report
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BMP Evaluation: Conclusions
Recognize benefits of env. footprint reduction Review entire BMP list Identify most applicable & most effective Thereby shrink the remedy’s footprint One or two BMPs do not a green remediation make!
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