Site Characterization and Monitoring

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The Accelerated Site Characterization documents address protocols and standards for innovative environmental site characterization processes.

Advanced Site Characterization Tools (ASCTs) guidance brings together information from primary literature, vendor literature, and personal experience illustrated by projects from the states to help state regulators and other practitioners understand, evaluate, and select technologies which support site conceptual site model and remedial strategy development and refinement.

The Bioavailability of Contaminated Sediments web-based document describes when and how to assess bioavailability at contaminated sediment sites during the exposure assessment process.
The Dense, Non-Aqueous Phase Liquids (DNAPLs) documents provide guidance on characterizing, remediating, and monitoring DNAPL source zones.
The Direct-Push Wells document provides guidance concerning the use of direct-push wells for long-term environmental monitoring.
The Environmental Molecular Diagnostics (EMDs) documents provide information about a selection of EMDs. EMDs provide additional lines of evidence for decision making during contaminated site management.

The Incremental Sampling Methodology (ISM) document describes the principles and the approaches needed to ensure representative, reproducible, and defensible data during soil sampling. ISM involves planning, sample collection, and laboratory processing and analysis to provide a representative sample with results that more accurately reflect the mean concentration of the area of interest than discrete samples. The ISM document provides you the key principles regarding sampling and sampling error and how ISM reduces those errors so that you can have more confidence in your sampling results.

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The Mass Flux document summarizes the concepts underlying mass flux and discharge, their potential applications, and case studies of the uses of these metrics.
The Passive Samplers documents address the use of polyethylene diffusion bags for passive groundwater sampling, particularly for long-term monitoring.
The Radionuclides documents address characterizing radioactively contaminated sites, cleanup goals, decontamination and decommissioning, and long-term stewardship.
The Remediation Process Optimization (RPO) documents address how to conduct a technical and programmatic assessment of cleanup system performance and effectiveness to achieve a timely site closeout. An RPO review looks at all processes affecting cleanup effectiveness: cleanup systems, established cleanup levels, established procedures to verify attainment of cleanup goals, and readiness to support a five-year review or any other part of a regulation-mandated process. Other topics that are addressed are life-cycle cost analysis; exit strategies; above ground treatment technologies; data management, analysis, and visualization techniques; and performance-based management.
The Triad Approach documents provide guidance on how to use the Triad approach to conduct environmental clean up work in a way that increases effectiveness and improves quality, while reducing project costs.
The Vapor Intrusion documents address investigating and evaluating the vapor intrusion pathway, including data evaluation and mitigation approaches.
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