Management of Contaminated Soil Oakland December 2, 2017 - - PowerPoint PPT Presentation

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Management of Contaminated Soil Oakland December 2, 2017 - - PowerPoint PPT Presentation

Mar 12, 2023 221 likes •376 views

Community Dialogue on the Management of Contaminated Soil Oakland December 2, 2017 Co-hosts: Greenaction for Health and Environmental Justice & West Oakland Environmental Indicators Project Community Feedback from Meeting #1 and #2

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SLIDE 1

Community Dialogue on the Management of Contaminated Soil

Oakland December 2, 2017

Co-hosts: Greenaction for Health and Environmental Justice & West Oakland Environmental Indicators Project

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SLIDE 2

Community Feedback from Meeting #1 and #2

  • Transparency/Accessibility
  • Consistency
  • Community Engagement/Outreach
  • Modification to Process or Language
  • Communication
  • Decision-making and management
  • Company/Facility Operations
  • Costs & Resources
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SLIDE 3

Objectives for Meeting # 3

  • Identify a set of shared principles developed by community

participants that will help inform DTSC decision-making concerning the disposal and/or treatment of contaminated soils

  • Develop proposed guidelines for factoring and weighting

community input in remediation decisions with an understanding of available remediation technologies.

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SLIDE 4

Next Steps After Today

1.

Summary Report and Draft Action Plan (February 2018)

2.

Share Outcomes with Communities (Spring 2018)

3.

Hold Workshops with DTSC and Communities to Share Information and Program Changes (Winter 2018)

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SLIDE 5

How Much Contaminated Soil is Generated from Site Cleanups?

  • 100,000

200,000 300,000 400,000 500,000 600,000 700,000 800,000 900,000

Contaminated Soil generated from Site Cleanup in CA (tons)

Tons

Year

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SLIDE 6

Where is the Soil Going?

In-State Out of State 2002 2008 2013 2016

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Disposal In-State Versus Out of State (% of total)

Year

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SLIDE 7

California Hazardous Waste Landfills

Tons Clean Harbors, Buttonwillow Chem-Waste, Kettleman City 120,810 tons/year 161,335 tons/year

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SLIDE 8

Out-of-State Landfills Receiving the Most Hazardous Waste from CA (Includes Non-Soil) in 2016

  • US Ecology, Nevada (530,100 tons),
  • East Carbon Development Corp, Utah

(480,400 tons),

  • La Paz County – Community

Development Agency, Arizona (66,100 tons).

(Hazardous Waste Tracking System)

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SLIDE 9

Contaminated Soil Compared to Other Hazardous Waste

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2016

Contaminated soil from site clean up compared to other hazardous wastes (% of total and tonnage)

Contaminated soil

1,160, 300 tons (64.2%)

Other Hazardous Waste

646,363 tons (35.80%)

YEAR % of total

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SLIDE 10

Contaminated Soil from Site Cleanups

  • Over 600,000 tons in 2016
  • Approximately 850 generators
  • Metals
  • lead
  • Semi-volatile organics
  • polychlorinated biphenyls (PCBs),
  • pesticides
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SLIDE 11

Remedy Selections Process

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SLIDE 12

Decision Making for Cleanup Projects: National Contingency Plan Criteria

  • Threshold Criteria - the criteria each

alternative must satisfy to be eligible for selection as a potential cleanup option.

  • Balancing Criteria - technical criteria that

form the basis for the detailed analysis of alternatives.

  • Modifying Criteria - criteria that are

assessed during the public comment period.

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SLIDE 13

National Contingency Plan Nine Evaluation Criteria

Threshold criteria

Overall protection of human health and the environment Compliance with Applicable or Relevant and Appropriate Requirements (ARARs)

(development of cleanup goals)

Balancing criteria

Long-term effectiveness and permanence (assessment

  • f residual risk/reliability)

Reduction of toxicity, mobility or volume (technical

evaluation of expected reduction in these parameters)

Short-term effectiveness

(protection of community and workers)

Implementability (ability to

implement and reliability of technology)

Cost (cost of implementation and

maintenance)

Modifying criteria

State acceptance

(state’s evaluation of draft cleanup plan)

Community acceptance (interested

community’s evaluation and support, opposition, or questions on draft cleanup plan)

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SLIDE 14

Options for Cleanup

  • Immobilization
  • Solidification and stabilization
  • Containment (landfill, capping)
  • Extraction
  • Soil vapor extraction (vacuum)
  • Thermal desorption (heating)
  • Soil flushing / washing (separation)
  • Destruction or alteration
  • Thermal (oxidation)
  • Biological (bioremediation)
  • Chemical (in situ chemical oxidation)
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SLIDE 15

Handouts and Resources

  • Technology Screening Matrix (handout)
  • Citizen’s Guides to Cleanup Technologies
  • “CLU-IN” https://clu-in.org/
  • Federal Remediation Technologies

Roundtable https://frtr.gov/

  • DTSC Technologies & Remedies Documents
  • http://www.dtsc.ca.gov/SiteCleanup/PTandR.cfm