1 Triennial Review of Water Quality Standards Pennsylvania Department of Environmental Protection...

1

Triennial Review

of

Water Quality Standards

Pennsylvania Department of Environmental ProtectionPennsylvania Department of Environmental ProtectionBureau of Water Standards and Facility RegulationBureau of Water Standards and Facility Regulation

ReviewProposed Revisions, Purpose & Timeline

Agricultural Advisory Board August 22, 2007

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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)

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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).


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• 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


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• 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.


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PPNO CHEMICAL NAME

Fish and Aquatic Life Criteria

DEP HHC

ug/L - 3/06 TR08 Proposed HH

Criteria (ug/L) CCC (ug/L) CMC (ug/L)

1P 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

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• 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.

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• 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)


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• 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.

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Updates and Corrections forMissing 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.

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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.


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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.


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Timeline for Triennial Review of

Water Quality Standards - 2008M

ay 1

0, 2

006

= Pr

esen

t upd

ate

to W

RA

C

rega

rdin

g st

atus

and

scop

e

Oct

ober

200

6 =

Pres

ent U

pdat

e on

pro

pose

d

rule

-mak

ing

to W

RA

C

Sum

mer

/Fal

l 20

07 =

Pre

sent

the

prop

osed

rule

-mak

ing

to th

e EQ

B

TB

D b

y L

egis

lativ

e R

ef. B

ur. =

Pub

lishe

d in

Pa

Bul

letin

acc

ompa

nied

by

a 45

day

com

men

t per

iod.

At l

east

one

Pub

lic M

eetin

g / H

earin

g w

ill b

e he

ld in

the

Har

risbu

rg a

rea

durin

g th

e pu

blic

com

men

t per

iod.

Febr

uary

200

8 =

Pres

ent d

raft

com

men

t &

resp

onse

doc

umen

t and

sta

tus

on fi

nal r

ule-

mak

ing

to W

RA

C.

Apr

il 20

08 =

Pre

sent

fina

l rul

e-

mak

ing

to E

QB

July

200

8 =

Subm

it fin

al ru

le-m

akin

g

to E

PA fo

r rev

iew

& a

ppro

val


Spri

ng 2

006

= M

et w

ith E

PA R

egio

n 3

and

WR

AC

to se

ek in

put o

n sc

ope

of T

R08

May

200

7 =

Pres

ent U

pdat

e on

dra

ft pr

opos

ed

rule

-mak

ing

to W

RA

C; r

ecom

men

d D

EP m

ove

fwd

as p

ropo

sed

rlmkg

Aug

ust 2

007

= Pr

esen

t Ove

rvie

w o

f dra

ft

prop

osed

rule

-mak

ing

to A

g A

dvis

ory

Boa

rd

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