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Scientific Investigations Report 2008–5027

Scientific Investigations Report 2008–5027

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Conversion Factors, Datum, and Abbreviations and Acronyms

Conversion Factors

Multiply By To obtain
mile (mi) 1.609 kilometer (km)
inch (in) 2.54 centimeter (cm)
acre (ac) 0.001562 square mile (mi2)
square mile (mi2) 2.59 square kilometer (km2)
square mile (mi2) 640 acre
liter (L) 0.264172051 gallon (gal)
Flow Rate
cubic foot per second (ft3/s) 0.02832 cubic meter per second (m3/s)
cubic foot per second (ft3/s) 646,316.88 gallon per day (gal/d)
microgram (μg) 0.000001 gram (g)
gram (g) 0.0352739619 ounce, avoirdupois (oz)
kilogram (kg) 2.20462262 pound (lb)


Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Abbreviations and Acronyms

Abbreviations and Acronyms Meaning
2,4-D 2,4-dichlorophenoxyacetic acid
2,4-DP 2-(2,4-dichlorophenoxy) propionic acid
AMPA amino-methyl-phosphonic acid (a glyphosate degradate)
AZM azinphos-methyl (an orthophosphate insecticide)
BQ max Maximum Benchmark Quotients
BMPs best management practices
BT Bacillus thuringiensis kurstaki (a bacteria used as a biocide)
CCME Canadian Council of Ministers of the Environment
CAAT 2-chloro-4,6-diamino-1,3,5-s-triazine (desethyl-desisopropyl-atrazine) (an atrazine degradate)
CIAT 2-chloro-4-isopropylamino-6-amino-s-triazine (deethylatrazine)(an atrazine degradate)
CWMG Clackamas Watershed Management Group
DCA 3,4-dichloroaniline (a diuron degradate)
DCPA dimethyl-tetrachloroterephthalate (an herbicide also known as dacthal)
DDE dichlorodiphenyl-dichloroethane (a degradate of the insecticide DDT)
DEET N,N-diethyl-m-toluamide (an insect repellant)
DNOC 4,6-dinitro-o-cresol (an herbicide)
EPTC s-ethyl dipropyl-thiocarbamate (an herbicide)
ESUs evolutionarily significant units
EUSE Effects of Urbanization on Stream Ecosystems (USGS NAWQA study)
FNU Formazin Nephelometric Unit (a measure of turbidity)
GC/MS gas chromatography/mass spectrometry
GF glass-fiber (filter material used during sample processing)
GIS Geographic Information System
HA–L Lifetime Health Advisory
HBSL Health-Based Screening Level
IPM integrated pest management program
Koc organic carbon partition coefficient
LC50 lethal concentration for 50 percent of the test population
LRL laboratory reporting level
MCL Maximum Contaminant Level
MCPA 2-methyl-4-chlorophenoxy acetic acid (a type of herbicide)
MCPB 2-methyl-4-chlorophenoxy butyric acid (a type of herbicide)
MDL method detection level
MTC median toxicity concentration
NAWQA National Water-Quality Assessment
NLCD01 USGS National Land Cover Data (2001)
NTRU Nephelometric Turbidity Ratio Unit (a measure of turbidity)
OIET 2-hydroxy-4-isopropylamino-6-ethylamino-s-triazine (hydroxyatrazine)(an atrazine degradate)
OPP Office of Pesticide Programs (USEPA)
OSU Oregon State University
OW Office of Water (USEPA)
PAC powdered activated carbon
PCODE USGS parameter code
POCIS polar organic chemical integrative sampler
PTI Pesticide Toxicity Index
PURS Oregon’s Pesticide Use and Reporting System
QC quality-control
SWCD Soil and Water Conservation District
SWQA Source Water-Quality Assessment (USGS NAWQA study)
SPMD semipermeable membrane device
USEPA U.S. Environmental Protection Agency
USGS U.S. Geological Survey

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