TMDL Process - UMass Amherst

CEE 577 Lecture #2

Updated: 7 September 2017

9/7/2017

Print version

Lecture #2 (modeling fundamentals & mass balance)

Chapra, L1

(pp. 3-20)

TMDL Process

Lawsuits in 1990s

forced EPA to act

Water Quality Standards Monitor/Assess WQS Attainment

List Impaired Waters

Develop TMDL

Continuing Planning Process

Waste Load

Allocation Point Source

NPDES Permits

Integrated Watershed

Plan

Load Allocation Control Nonpoint Sources

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CEE 577 Lecture #2

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Top 10 Categories of Impairment Identified on the 1998 303d lists

Cause of Impairment

Sediments Pathogens Nutrients Metals Dissolved Oxygen Other Habitat Alterations Temperature Ph Impaired Biologic Community Pesticides

Count

6133 5281 4773 3984 3758 2106 1884 1798 1440 1432

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Impaired Watersheds in US

See: EPA's impaired waters page

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CEE 577 Lecture #2

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; accessed 24 Jan 2012

Impaired waters by state

State

Number

State

Number

State

Alabama

209

Kentucky

1,300

North Dakota

Alaska

35

Louisiana

250

Ohio

Arizona

84

Maine

114

Oklahoma

Arkansas

224

Maryland

184

Oregon

California

691

Massachusetts 837

Pennsylvania

Colorado

244

Michigan

2,352

Puerto Rico

Connecticut 425

Minnesota

1,144

Rhode Island

Delaware

101

Mississippi

180

South Carolina

Number 214 267 743 1,397 6,957 165 162 961

DC

36

Missouri

245

South Dakota 159

Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa

2,292 215 47 309 915 1,057 1,836 474

Montana Nebraska Nevada NH New Jersey New Mexico New York North Carolina

604 260 181 1,449 745 196 528 1,270

Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin

1,028 651 118 126 1,523 2,419 1,097 59

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Wyoming

111

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CEE 577 Lecture #2

Nutrient Criteria

9/7/2017

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2016 projection

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MA DEP

2013 Data

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CEE 577 Lecture #2

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Priority Pollutants: Pg 1 of 8

Freshwater

Saltwater

Priority Pollutant

CAS Number

CMC (?g/L)

CCC (?g/L)

CMC (?g/L)

CCC (?g/L)

Human Health; For Consumption of:

Water + Organism Organism Only (?g/L) (?g/L)

FR Cite/ Source

1

Antimony

2

Arsenic

3

Beryllium

4

Cadmium

5a Chromium (III)

5b Chromium (VI)

6

Copper

7

Lead

8a Mercury 8b Methylmercury

9

Nickel

10 Selenium

11 Silver

7440360 7440382

340 A,D,K

7440417 7440439

16065831

2.0 D,E,K,bb 570 D,E,K

18540299

7440508

7439921

7439976 22967926

7440020 7782492

16 D,K 13 D,E,K,cc 65 D,E,bb,gg 1.4 D,K,hh

470 D,E,K

L,R,T

7440224

3.2 D,E,G

150 A,D,K

0.25 D,E,K,bb 74 D,E,K

11 D,K 9.0 D,E,K,cc 2.5 D,E,bb,gg 0.77 D,K,hh

52 D,E,K 5.0 T

69 A,D,bb

40 D,bb

1,100 D,bb 4.8 D,cc,ff 210 D,bb 1.8 D,ee,hh 74 D,bb 290 D,bb,dd 1.9 D,G

36 A,D,bb

8.8 D,bb

50 D,bb 3.1 D,cc,ff 8.1 D,bb 0.94 D,ee,hh 8.2 D,bb 71 D,bb,dd

5.6 B 0.018 C,M,S

Z Z Z Total Z Total 1,300 U

610 B

170 Z

640 B

65FR66443

0.14 C,M,S

65FR31682 57FR60848

65FR31682

EPA-822-R-01001

65FR31682 EPA820/B-96001 65FR31682

65FR31682

65FR31682

0.3 mg/kg J 4,600 B

65FR31682

62FR42160 EPA823-R-01001

65FR31682

4200

62FR42160 65FR31682 65FR66443

65FR31682

12 Thallium David A. Reckhow

7440280 CEE 577 #2

1.7 B

6.3 B

65FR31682 9

Priority Pollutants: Pg 8 of 8

Revised Human Health Water Quality Criteria (December 31, 2003)

Priority Pollutant 111 Dieldrin

112 alpha-Endosulfan

113 beta-Endosulfan

114 Endosulfan Sulfate 115 Endrin 116 Endrin Aldehyde 117 Heptachlor

118 Heptachlor Epoxide

119 Polychlorinated Biphenyls PCBs:

120 Toxaphene David A. Reckhow

Freshwater

CAS Number

60571

CMC (?g/L) 0.24 K

959988 33213659

0.22 G,Y 0.22 G,Y

1031078 72208

7421934 76448

1024573

0.086 K 0.52 G 0.52 G,V

8001352

0.73

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Saltwater

CCC (?g/L) 0.056 K,O

CMC (?g/L) 0.71 G

0.056 G,Y 0.056 G,Y

0.034 G,Y 0.034 G,Y

0.036 K,O

0.037 G

0.0038 G,aa 0.0038 G,V,aa

0.053 G 0.053 G,V

0.014 N,aa

0.0002 aa

0.21

CCC (?g/L) 0.0019 G,aa

0.0087 G,Y

0.0087 G,Y

Human Health; For Consumption of:

Water + Organism Organism Only (?g/L) (?g/L)

FR Cite/ Source

0.000052 B,C

62 B

62 B 62 B

0.000054 B,C

89 B

89 B 89 B

65FR31682 65FR66443

65FR31682 65FR66443

65FR31682 65FR66443

65FR66443

0.0023 G,aa

0.76 B

0.81 B,H

65FR31682

0.0036 G,aa 0.0036 G,V,aa

0.03 N,aa 0.0002 aa

0.29 B

0.30 B,H

65FR66443

0.000079 B,C 0.000039 B,C 0.000064 B,C,N 0.00028 B,C

0.000079 B,C 0.000039 B,C 0.000064 B,C,N 0.00028 B,C

65FR31682 65FR66443

65FR31682 65FR66443

65FR31682 65FR66443

65FR31682 65FR1606443

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