Herbicide Benchmarks Used in the Appendix Graphs
in the NAWQA Summary Reports, 2004
(See below for codes and references.)
NAME DRW* AQCR** Report_Units DRW_Source* AQCRSRC**
---------------- ------ ------- ---------- ---------- --------------------
Acifluorfen 10 UG/L RSD5
Alachlor 2 UG/L MCL
Atrazine 3 1.8 UG/L MCL CAN
Bentazon 200 UG/L HAL
Bromacil 90 5 UG/L HAL CAN-interim
Bromoxynil 5 UG/L CAN
Butylate 400 UG/L HAL
Cyanazine 1 2 UG/L HAL CAN-interim
2,4-D 70 4 UG/L MCL CAN(phenoxy herbic)
2,4-DB 4 UG/L CAN (phenoxy herbic)
DCPA 70 UG/L HAL
Dicamba 200 10 UG/L HAL CAN-interim
Dinoseb 7 0.05 UG/L MCL CAN
Diuron 10 UG/L HAL
Fluometuron 90 UG/L HAL
Linuron 7 UG/L CAN-interim
MCPA 4 2.6 UG/L HAL CAN-interim
Metolachlor 100 7.8 UG/L HAL CAN-interim
Metribuzin 200 1 UG/L HAL CAN-interim
Picloram 500 29 UG/L MCL CAN-interim
Prometon 100 UG/L HAL
Pronamide 50 UG/L HAL
Propachlor 90 UG/L HAL
Propham 100 UG/L HAL
Simazine 4 10 UG/L MCL CAN
2,4,5-T 70 4 UG/L HAL CAN (phenoxy herbic)
2,4,5-TP 50 4 UG/L MCL CAN (phenoxy herbic)
Tebuthiuron 500 1.6 UG/L HAL CAN-interim
Terbacil 90 UG/L HAL
Triallate 0.24 UG/L CAN-interim
Trifluralin 5 0.2 UG/L HAL CAN
# ####################################################################
#
# * DRW: Drinking Water Criteria:
#
# * DRW Source Codes: Source of data in the DRW column:
#
# MCL = EPA maximum contaminant level in drinking water
#
# HAL = EPA lifetime health advisory, assumes consumption of 2 L of
# water per day over a 70 year lifetime by a 70-kg adult, and that
# 20% of exposure comes from drinking water
#
# RSD5 = Risk-specific dose @ Cancer risk level=10E-5. For potential
# carcinogens only.
#
# NOTE: RSD5(Risk level=10E-5) = RSD4(Risk level=10E-4) / 10.
#
#
#
# References for human-health benchmarks:
#
# MCL, HAL, and RSD5 values are from USEPA (2002c) unless
# noted otherwise. A few RSD5 values are from USEPA (2002a), as
# noted in database. Also, drinking water regulations for some
# constituents have changed recently, so these benchmarks have
# additional sources: arsenic (USEPA, 2001a,b), radon
# (USEPA, 1999a, 2000b), and uranium (USEPA, 2000c, 2001c, 2002b).
#
#
# USEPA, 2000c, National Primary Drinking Water Regulations;
# Radionuclides; Final Rule, Federal Register: Volume 65,
# Number 236 (December 7, 2000), Page 76707-76753.
# http://www.epa.gov/safewater/rads/radfr.html
#
#
# USEPA, 2002a, Integrated Risk Information System (IRIS) database,
# Office of Research and Development, National Center for Environmental
# Assessment (http://www.epa.gov/iris), accessed 9/13/02
#
#
# USEPA, 2002c, 2002Edition of the drinking water standards and
# health advisories, Office of Water, EPA-822-R-02-038
# (http://www.epa.gov/waterscience/drinking/standards/)
#
#
#
# ###################################################################
#
# ** AQCR: Aquatic Life Criteria:
#
# ** AQCRSRC Source Codes: Source of data for AQCR attribute.
#
# CAN and CAN-interim are from CCME (2001a).
#
# CAN-interim, PEL, FW and CAN-interim, prov-PEL are from CCME (2001b).
#
#
# Canadian Council of Ministers of the Environment (CCME), 2001a,
# Canadian water quality guidelines for the protection of aquatic
# life, Summary tables, In: Canadian environmental quality
# guidelines, 1999, updated 2001, CCME, Winnipeg
# (http://www.ec.gc.ca/CEQG-RCQE/English/Ceqg/Water/default.cfm).
#
#
# Canadian Council of Ministers of the Environment (CCME), 2001b,
# Canadian sediment quality guidelines for the protection of aquatic
# life: Summary tables. Updated. In: Canadian environmental quality
# guidelines, 1999, updated 2001, CCME, Winnipeg
# (http://www.ec.gc.ca/ceqg-rcqe/English/Ceqg/Sediment/default.cfm).
#
#
#
# #############################################################################