Analyzing Environmental Samples

Analyzing Environmental Samples - Environmental Sampling...

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1 Environmental ESM 202 W’08 Trish Holden Why sample / analyze? | Regulatory compliance z WWTP effluent characterization / reporting | Regulatory enforcement z SWRCB characterization of WWTP effluent | Emergency response z Spill characterization (solvent); fish kill | Forensics z Subsurface gasoline contamination | Routine monitoring z County sampling/ analysis for FIB | Research z Question based; scientific or mgmt endpoint 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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2 (Zhang, 2007. Done right, then the resulting data are “scientifically reliable” Perspectives | Practitioner / manager z Setting objectives, making plans z z Sample analysis z z Communication z z Resources | Reviewer z Importance of methods, approaches | Student z Extrapolating from principles Legal aspects http://www.epa.gov/apti/coc/ Legally-Defensible Data | Custody or control z Possession of samples, reagents, data z How possession was secured | Documentation z Paper trail, photos, etc. z Chain of custody | Traceability z Prove origins and purity of reagents
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3 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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