Remediation Testing & Design
Real Estate Transaction Due Diligence
Environmental Site Assessments (ESAs) are required by lenders as an essential part of agricultural, commercial, and industrial property transaction due diligence. Phase I ESAs are performed to determine if Recognized Environmental Conditions exist by reviewing historical records, interviews and site reconnaissance. The Phase I ESA enables a prospective buyer to establish an innocent property owner defense. RTD follows current ASTM standards for assessments unless the client requests modifications. Our property transaction due diligence services include:
• Phase I Environmental Site Assessments (ESAs)
• Phase II Soil, Water, and Vapor Sampling ESAs
• Phase III Environmental Remediation
• Environmental and Human Health Risk Assessment
• Brownfield Redevelopment
Environmental Site Investigation & Sampling
RTD has decades of experience providing cost-effective, common sense, science-based site investigations. High quality data is necessary to determine environmental risks and liabilities, to evaluate remediation options, and to justify site closure. RTD tailors investigation programs for each site and client to achieve closure and redevelopment goals. The work is safely conducted by appropriately licensed and experienced professionals with minimum site disruption.
Our services include:
• Subsurface Soil and Groundwater Investigations
• Soil Borings & Well Installations
• Groundwater Monitoring
• Soil Gas Surveys/Vapor Intrusion Studies
• Remediation Feasibility Testing
Site Conceptual Modeling & Risk Assessment
At RTD, we use the Site Conceptual Model (SCM) approach to identify chemicals of concern, human and environmental exposure pathways, and potential receptors. As part of this process, we conduct human-health and ecological Risk Assessments to evaluate possible toxic and cancerous exposures to soil, soil vapor, surface water, and groundwater for current and likely future site uses. Chemical impact modeling and Risk Assessments are reasonable, cost-effective tools for developing cleanup goals and conducting analysis of cleanup strategies. This science-based process is also used in technical justification of site closure. RTD has actively influenced the adoption of SCM and Risk Assessment policy in California.
Remediation Services
Following characterization and risk assessment activities, RTD develops a technically justified, cost-effective cleanup plan to meet the specific needs of our clients. Our staff has extensive experience in safely and efficiently designing, implementing, and managing simple to complex remediation programs. We have participated in a wide-range of cleanup activities on various sites including, gas stations, high-tech manufacturing facilities, dry cleaners, landfills, brownfield redevelopments, agricultural pesticide impacts, and commercial businesses. Remediation strategies include:
• Removal/Closure of chemical storage tanks
• Excavation, treatment, and/or recycling of impacted soil.
• Extraction and onsite treatment of soil vapor and groundwater
• Subsurface free-product hydrocarbon removal and recycling
• Enhanced chemical oxidation/reduction of soil and groundwater
• Monitored natural attenuation of groundwater resources
Site Closure & Regulatory Compliance
RTD maintains a strong relationship working with and educating regulatory authorities on site closure activities based on solid science for a focused cleanup, reducing our client’s environmental liability. These consulting activities include development of post-remediation site use limits, assistance with deed restriction documentation, and other services including:
| • | Risk-Based Site Closure |
| • | Cost-Assessment for Site Closure Activities |
| • | Preparation of Operation and Maintenance Plans (O&M Plans) |
| • | Personnel Training in O&M Plan Compliance |
| • | Regulatory Response Consulting for Environmental Regulation Compliance |
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