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	What are real-time measurement technologies? What is the Triad approach? What makes the Triad different from past efforts to improve the CERCLA process (the Observational Approach, Expedited Site Characterization (ESC), Data Quality Objectives (DQO), the Streamlined Approach for Environmental Remediation (SAFER), Superfund Accelerated Cleanup Program (SACM), etc.)? Is the Triad here to stay? What is the extent of regulatory acceptance of the Triad? What State regulatory agencies have bought into the Triad? What are field-based measurement technologies? How does the Triad differ from what I would traditionally do under CERCLA or RCRA? Why should I consider using the Triad for my project? Are there any situations where I should not use the Triad? What real-time measurement and/or field measurement techniques are currently available? How are real-time measurement systems related to the EPA Contract Laboratory Program and to the Superfund analytical method classification system?

Analytical Methods FAQs

Real-time and field-based measurement technologies, analytical and data quality, and related analytical methods questions.

• What are real-time measurement technologies?


• What are field-based measurement technologies?


• How did the current concepts about "data quality" develop?


• What is the "second-generation data quality model" that the Triad relies on?


• What is the difference between screening analytical methods and more rigorous analytical methods?


• Why does the Triad distinguish between "analytical quality" and "data quality"?


• How does Triad deal with sample representativeness?


• What are "decision quality data" and "effective data" as defined under the Triad approach?


• How is "screening quality data" defined under the Triad approach?


• What is "data of unknown quality"?


• Why is the term "field screening" discouraged under Triad?


• How are real-time measurement systems related to the EPA Contract Laboratory Program and to the Superfund analytical method classification system?


• What is the relationship between real-time measurements systems used by the Triad and SW-846 protocols?


• What real-time measurement and/or field measurement techniques are currently available?


• Can I still use a Triad approach if an appropriate real-time technique is not available for my site (i.e., contaminants are not detectable at action levels by real-time techniques)?


• What QA/QC requirements apply when using a Triad approach? How are these different from what I would do otherwise?


• Should field-based or fixed-laboratory methods be used?


• Is there a typical approach to establishing the reliability and usability of field-based measurements?

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