8277 - Laserfiche WebLink

Home Browse Search

Table 5. Pesticide target analytes, method reporting limits, drinking-water standards, and aquatic-life criteria-Continued [µg/L, micrograms per liter; H, herbicide; I, insecticide; D, pesticide degradate; F, fungicide; --, no drinking-water standard, guideline, or criteria for aquatic-life protection established; drinking-water standazds are U.S. Environmental Protection Agency primary drinking-water standards; drinking- water standards and guidelines aze from U.S. Environmental Protection Agency (1999a), unless otherwise noted; criteria for aquatic-life protection are chronic criteria from U.S. Environmental Protection Agency (1999b), unless otherwise noted] Drinking- Freshwater- Chemical Method water chronic Type of Abstract reporting standard criterion for Pesticide Trade or common name pesti- or health- protection cide Service registry limit advisory of aquatic number (µg/L) guideline life (µ9n-) (µ9n-) i Guidelines for the protection of freshwater aquatic life aze Canadian Water Quality Guidelines from Environment Canada (1999). z Concentrations for these pesticides aze qualitatively identified and reported with an E code (estimated value) because of problems with gas chromatography or extraction (Zaugg and others, 1995). 3 U.S. Environmental Protection Agency lifetime-health advisory fora 70-kilogram adult (about 150 pounds). 4 Analyzed by both gas chromatography/mass spectrometry and high-performance liquid chromatography methods. 5 Interim guidelines for the protection of freshwater aquaric life are Canadian Water Quality Guidelines from Environment Canada (1999). 6 U.S. Environmental Protection Agency risk-specific health advisory associated with a cancer risk of 10~ (U.S. Environmental Protection Agency, 1999c). ~ Guidelines for the protection of freshwater aquatic life are from International Joint Commission Canada and United States (1978). 8 U.S. Environmental Protection Agency risk-specific health advisory associated with a cancer risk of 10~. 9 Interim guidelines for the protection of freshwater aquatic life are Canadian Water Quality Guidelines from Environment Canada (1999). Value applies to linuron, including linuron and its transformation products. to U.S. Environmental Protection Agency lifetime-health advisory fora 70-kilogram adult (about 150 pounds). Value is under review. ~ 1 New reporting level for constituent, effective 12/15/97, based on analysis of performance data for schedule 2050 from the Organic Blind Sample Program of the NWQL's Quality Assurance Unit and from routine laboratory reagent spike recovery data (National Water Quality Labora- tory, 1998). No change in historical results reported for detections is needed since all reported detections and concentrations have been and still are considered reliable. 1z Criteria for the protection of aquatic life aze recommended maximum concentrations in freshwater by National Academy of Sciences and National Academy of Engineering, from Nowell and Resek (1994). is Concentrations for these pesticides are qualitatively identified and reported with an E code because of (1) low and variable recoveries of aldicarb and aldicarb sulfone and (2) post-collection conversion of aldicazb to aldicarb sulfoxide, resulting in variable high bias in aldicarb sulfoxide (National Water Quality Laboratory, 1998). 14 U.S. Environmental Protection Agency draft drinking-water standazds. 15 Interim guidelines for the protection of freshwater aquatic life are Canadian Water Quality Guidelines from Environment Canada (1999). Value is sum of aldicazb, aldicazb sulfone, and aldicazb sulfoxide. 16 Guidelines for the protection of freshwater aquatic life are Canadian Water Quality Guidelines from Environment Canada (1999). Value applies to total bromoxynil, including the phenol, octanoate, and heptanoate forms. ~~ Compound with variable analytical performance, for which concentrations are reported as estimated values. 18 Concentrations for these pesticides are qualitatively identified and reported with an E code because of variable recovery performance during solid-phase extraction and HPLC analysis (Werner and others, 1996; National Water Quality Laboratory, 1998). t9 Interim guidelines for the protection of freshwater aquatic life are Canadian Water Quality Guidelines from Environment Canada (1999). Value applies to all forms of MCPA and all transformation products. 12 Pesticides in Surface Waters of the Upper Colorado River Basin, Colorado, 1996-98