Remediation Plan Overland Trucking Facility

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Remediation PlanOverland Trucking Facility

• Casper, Wyoming
• May 2003

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Uni-Wyo Engineering

• Dee Bennett
• Peggy Carter
• Jessie Knott
• Russ Pickering
• Shane Schieck
• William Wiser

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Summary

• Site Background
• Site Characteristics
• Summary of Risks
• Remedial Objectives
• Alternative Evaluation
• Community Participation

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Site Background

• Casper, Wyoming
• Overland Trucking Facility
• Facility Operations
• Contamination History

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Project Location
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Site Characteristics

• Highly permeable soils
• Shallow water table
• Shallow aquitard
• LNAPL plume
• Slight groundwater gradient
• Ditch/Ephemeral drainages
• Fish Creek
• Proximity to residential areas

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Geologic Cross Section
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Site Overview
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BTEX Concentrations
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Summary of Risks

• BTEX hazards
• Exposure pathways
• Endpoints of concern

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Remedial Objectives
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Alternative Evaluation

• Excavation
• Thermal Desorption
• Incineration

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Alternative Evaluation

• Pump and Treat
• Treatment/Barrier Wall
• Air Sparging/Horizontal SVE
• Bioremediation
• Natural Attenuation

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Pump and Treat
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In situ Barrier Wall
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Air Sparging/SVE
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Bioventing
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Phytoremediation
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Remediation Plan
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Natural Attenuation
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Community Participation

• Public Information Meeting
• Public Report Copies
• Information telephone numbers
• Uni-Wyo Engineering 1-307-555-5555
• Casper District Office 1-307-555-5213
• State HQ, Cheyenne 1-307-555-6245

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Community Participation

• Mail and email address for comments and
  suggestions
• WY DEQ
• Casper Regional Office
• 42 North First Street
• Casper, WY 82601
• ATTN TIM TAYLOR
• timtaylor_at_wyodeq.gov

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Questions?