Analyzing Environmental Samples

Analyzing Environmental Samples - Environmental Sampling...

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Environmental ESM 202 W’08 Trish Holden
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Why sample / analyze? Regulatory compliance WWTP effluent characterization / reporting Regulatory enforcement SWRCB characterization of WWTP effluent Emergency response Spill characterization (solvent); fish kill Forensics Subsurface gasoline contamination Routine monitoring County sampling/ analysis for FIB Research Question based; scientific or mgmt endpoint
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ENVIRONMENT PC - 1 (70%) 0.18 0.20 0.22 0.24 0.26 0.28 PC - 2 (6%) -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 B C D E F A B C D E F B C D E F High Med Low UNDERSTANDING
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(Zhang, 2007. Done right, then the resulting data are “scientifically reliable”
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Perspectives Practitioner / manager Setting objectives, making plans Sample analysis Communication Resources Reviewer Importance of methods, approaches Student Extrapolating from principles
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Legally-Defensible Data Custody or control Possession of samples, reagents, data How possession was secured Documentation Paper trail, photos, etc. Chain of custody Traceability Prove origins and purity of reagents
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Chain-of-Custody Guidelines Keep the number of people involved in collecting and
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Analyzing Environmental Samples - Environmental Sampling...

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