Volatile Organic Compound 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**
---------------------------------------- ------ ------- ---------- ---------- --------------------
Benzene 5 370 UG/L MCL CAN-interim
Bromochloromethane 90 UG/L HAL
Bromodichloromethane 80 UG/L MCL
Bromomethane 10 UG/L HAL
2-Butanone 4000 UG/L
1-Chloro-2-methylbenzene 100 UG/L HAL
1-Chloro-4-methylbenzene 100 UG/L HAL
Chlorobenzene 100 1.3 UG/L MCL CAN-interim
Chloroethene 2 UG/L MCL
Chloromethane 3 UG/L HAL
1,2-Dibromo-3-chloropropane 0.2 UG/L MCL
Dibromochloromethane 80 UG/L MCL
1,2-Dibromoethane 0.05 UG/L MCL
1,2-Dichlorobenzene 600 0.7 UG/L MCL CAN-interim
1,3-Dichlorobenzene 600 150 UG/L HAL CAN-interim
1,4-Dichlorobenzene 75 26 UG/L MCL CAN-interim
Dichlorodifluoromethane 1000 UG/L HAL
1,2-Dichloroethane 5 100 UG/L MCL CAN-interim
1,1-Dichloroethene 7 UG/L MCL
trans-1,2-Dichloroethene 100 UG/L MCL
cis-1,2-Dichloroethene 70 UG/L MCL
Dichloromethane 5 98.1 UG/L MCL CAN-interim
1,2-Dichloropropane 5 UG/L MCL
trans-1,3-Dichloropropene 4 UG/L RSD5
cis-1,3-Dichloropropene 4 UG/L RSD5
1,2-Dimethylbenzene 10000 UG/L MCL
1,3 & 1,4-Dimethylbenzene 10000 UG/L MCL
Dimethylbenzenes 10000 UG/L MCL
Ethenylbenzene 100 UG/L MCL
Ethylbenzene 700 90 UG/L MCL CAN-interim
1,1,2,3,4,4-Hexachloro-1,3-butadiene 1 1.3 UG/L HAL CAN-interim
1,1,1,2,2,2-Hexachloroethane 1 UG/L HAL
Methyl tert-butyl ether 20 UG/L HAL
Methylbenzene 1000 2 UG/L MCL CAN-interim
Naphthalene 100 1.1 UG/L HAL CAN-interim
2-Propenenitrile 0.6 UG/L RSD5
1,1,2,2-Tetrachloroethane 0.3 UG/L
1,1,1,2-Tetrachloroethane 10 UG/L RSD5
Tetrachloroethene 5 111 UG/L MCL CAN-interim
Tetrachloromethane 5 13.3 UG/L MCL CAN-interim
Tribromomethane 80 UG/L MCL
1,2,4-Trichlorobenzene 70 24 UG/L MCL CAN-interim
1,2,3-Trichlorobenzene 8 UG/L CAN-interim
1,1,1-Trichloroethane 200 UG/L MCL
1,1,2-Trichloroethane 5 UG/L MCL
Trichloroethene 5 21 UG/L MCL CAN-interim
Trichlorofluoromethane 2000 UG/L HAL
Trichloromethane 80 1.8 UG/L MCL CAN-interim
1,2,3-Trichloropropane 40 UG/L HAL
# ####################################################################
#
# * 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, ACT, 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:
#
# ** AQCR Source Codes: Source of data for AQCR attribute.
#
#
# CAN-interim = Canadian interim water-quality guideline for
# freshwater aquatic life (for constituents in water)
#
#
#
# References for ecological benchmarks:
#
#
#
# CAN-interim, PEL, FW and CAN-interim, prov-PEL are from CCME (2001b).
#
#
# 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).
#
#
# #############################################################################