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<br />Related Activities-
<br />Contaminant Guidelines
<br />
<br />Guidelines for Interpretation of the Biological Effects of
<br />Selected Constituents in Biota, Water, and Sediment
<br />
<br />The guidelines, criteria, and other information in this volume
<br />were originally compiled for uSe by personnel conducting studies
<br />for the Department's NIWQP program. The purpose of these
<br />studies is to identify and address irrigation-Induced water
<br />quality and contamination problems associated with any of the
<br />Department's water projects in the Western United States,
<br />
<br />When NIWQP scientists submit samples of water, soil, sediment,
<br />eggs, or animal tissue for chemical analysis, they face a challenge
<br />in aetermining the significance of the analytical results. How
<br />much of a given chemical constituent is normal in the tested
<br />medium? Row much is unusually high? What adverse effects
<br />may result from the reported concentration? Studies that
<br />address these questions are myriad: they are widely scattered
<br />in the literature, they USe many different approaches and
<br />testing protocols, and they yield greatly varying and sometimes
<br />contradictory results. The chapters in this volume are intended
<br />to:
<br />
<br />1. Identify the most important, most relevant studies
<br />for several constituents of concern that are commonly
<br />encountered in environments affected by irrigation drainage.
<br />2. Present a sampling of notable results from these studies
<br />, in tables organized according to tested medium.
<br />3, Explain further, in the accompanying text, the significance
<br />of these results.
<br />4. Give full and accurate references to the original studies
<br />for those who desire more detailed information.
<br />
<br />14
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<br />-
<br />
<br />Related Activities-
<br />Contaminant Guidelines
<br />
<br />-
<br />-
<br />. -
<br />-
<br />:;.
<br />-,
<br />.-
<br />
<br />Constituents Affecting NIWQP Remediation Decisions
<br />
<br />Arsenic Molybdenum
<br />Boron Salinity
<br />Copper Selenium
<br />DDT Zinc
<br />Mercury
<br />
<br />The NIWQP considers the impacts from all chemicals that
<br />can be transported by irrigation draj~water to areas being.
<br />used by fish and wildlife. These chemICals, the levels to which
<br />they are regulated by other state and Federal programs, and
<br />their impacts on fish and wildlife can affect NIWQP decIsions
<br />to remediate for naturally occurrrng trace elements.
<br />
<br />A copy of the contaminant guidelines may be viewed or downloaded
<br />at the NIWQP Web site: www.usbr.gov/niwqp.
<br />
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<br />Sprinkler irri9otion ot
<br />Kendrick ProJect. Wyoming
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<br />15
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