Triennial Review
of
Water Quality Standards
Review
Proposed Revisions, Purpose & Timeline
Agricultural Advisory Board
August 22, 2007
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
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The Clean Water Act requires states to periodically, but at
least once every three years, review and revise as
necessary their water quality standards - Triennial
Review of Water Quality Standards
Pennsylvania’s WQS are contained in 25 Pa Code Ch. 93
and portions of Ch. 92 (relating to NPDES Permitting,
Monitoring and Compliance)
Other WQS provisions and criteria are also contained in
Chapters 16 (Toxics Mgmt Strategy - Statement of Policy)
and 96 (WQS Implementation)
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
2
Revise and update water quality criteria:
• Revise and update water quality criteria found in
Chapters 93 and 16 to reflect the latest scientific
information and new Federal guidelines for criteria
development.
• Revisions based in part on the most recent complete
compilation of nationally recommended WQ criteria,
as published in November 2002 (EPA-822-R-02-047),
and as updated in December 2002 (67 FR 79094).
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
3
•
EPA’s 2002 compilation includes recommended
WQ criteria for 126 priority pollutants and 17 other
compounds or chemicals.
•
New methods for deriving human health WQ
criteria includes change in the national
recommended fish consumption rate to17.5 g/day,
which is currently 6.5 g/day
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
4
•
Move revised, updated and other criteria currently
contained in Chapter 16 (Statement of Policy) into
new criteria tables in Chapter 93 WQS
(regulation), which include the following
agriculture-related chemicals
•
Also propose to add new statewide ambient water
quality criteria to new Chapter 93 Table 5 for
Molybdenum, Metolachlor, and Diazinon.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
5
Fish and Aquatic Life Criteria
CCC (ug/L)
CMC (ug/L)
DEP HHC
ug/L - 3/06
ALDRIN
0.1
3
0.00013
0.000049
2P
alpha-BHC
N/A
N/A
0.0039
0.0026
3P
beta-BHC
N/A
N/A
0.014
.0091
4P
gamma-BHC (LINDANE)
N/A
0.95
0.019
0.098
5P
delta-BHC
N/A
N/A
N/A
N/A
6P
CHLORDANE
0.0043
2.4
0.0021
0.00080
7P
4,4’-DDT
0.001
1.1
0.00059
.00022
8P
4,4’-DDE
0.001
1.1
0.00059
.00022
9P
4,4’-DDD
0.001
1.1
0.00083
.00031
10P
DIELDRIN
0.056
0.24
0.00014
.000052
11P & 12P
alpha- & beta-ENDOSULFAN
0.056
0.22
110
62 for endosulfan
13P
ENDOSULFAN SULFATE
N/A
N/A
N/A
N/A
14P
ENDRIN
0.036
0.086
0.76
.059
15P
ENDRIN ALDEHYDE
N/A
N/A
0.76
0.29
16P
HEPTACHLOR
0.0038
0.52
0.00021
.000079
17P
HEPTACHLOR EPOXIDE
0.0038
0.5
0.00010
.000039
--
DIAZINON
0.17
0.17
--
N/A
--
METOLACHLOR
N/A
N/A
--
69.4
2M
ARSENIC
150 (As3+)
340 (As3+)
50
10
--
MOLYBDENUM
N/A
N/A
--
208
PPNO
CHEMICAL NAME
1P
TR08 Proposed HH
Criteria (ug/L)
6
• Clarify definition of “conventional treatment” for
Potable Water Supply (PWS) use protection.
Conventional treatment - includes conventional filtration in a treatment
process that uses separate, sequential units for coagulation/flocculation,
clarification, and granular media filtration to produce finished water for
drinking.
• Adding that other intervening, more sensitive uses
may apply if the specified critical use does not afford
adequate protection.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
7
• Add reference to Drainage List X to indicate the
US EPA’s 2004 Beach Act federal promulgation at
40 CFR 131.41* for bacteriological water quality
criteria apply to these Lake Erie coastal recreational
waters within Pennsylvania.
(* as published on Nov. 16, 2004 at 69 FR 67218)
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
8
• Add migratory fishes (MF) use to the mid-Atlantic
slope drainage basins – the Delaware, Susquehanna
& Potomac Rivers.
• Reconfirm the removal of water contact (WC)
protected use on selected waters within
Pennsylvania’s WQS for portions of the Delaware
Estuary and for the outer Erie Harbor and Presque
Isle Bay.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
9
Updates and Corrections for
Missing items, typos or errors:
• Updates, revisions, and corrections for typos,
translation errors and missed references associated
with prior rulemaking and/or publication activities.
• Describe that notations will need to be added to the
stream drainage lists to identify where previously
approved site-specific water quality criteria apply.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
10
Revise / Update Portions Retained in Ch. 16:
•
The Department proposes to rename Chapter 16
Appendix A, Table 1 , “SITE-SPECIFIC WATER
QUALITY CRITERIA FOR TOXIC SUBSTANCES”.
Specific criteria that are developed or approved by the
Department will be housed in Appendix A, Table 1 until
there is a need or opportunity for proposal by the Board
to be incorporated into Chapter 93, Table 5.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
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•
Update approved analytical methods and detection
limits in Tables 2A and 2B to reflect the EPA
approved methods that were recently updated and
published as final in the Federal Register (72 FR
11199) on March 12, 2007, which were effective
on April 11, 2007.
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
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Timeline for Triennial Review of
Water Quality Standards - 2008
Pennsylvania Department of Environmental Protection
Bureau of Water Standards and Facility Regulation
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