ORDINANCE NO. 14,299
AN ORDINANCE to amend the Municipal Code of the City of Des Moines, Iowa, 2000, adopted by Ordinance No. 13,827, passed June 5, 2000, by amending paragraph (2) of Section 118-352 and subparagraph (3) of paragraph (c) of Section 118-353 thereof, relating to changing the upper pH level.
Be It Ordained by the City Council of the City of Des Moines, Iowa:
Section 1. That the Municipal Code of the City of Des Moines, Iowa, 2000, adopted by Ordinance No. 13,827, passed June 5, 2000, is hereby amended by amending paragraph (2) of Section 118-352 and subparagraph (3) of paragraph (c) of Section 118-353 thereof, relating to changing the upper pH level as follows:
Sec. 118-352. Discharge prohibitions.
The following general prohibitions shall apply to all users of the publicly owned treatment works unless the user is subject to a more restrictive National Categorical Pretreatment Standards, the state department of natural resources, or wastewater discharge permit limit. The following substances are prohibited from discharge to the publicly owned treatment works:
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(2) Any substance which will cause corrosive structural damage to the publicly owned treatment works, but in no case discharges with pH lower than 5.0 or greater than 12.0.
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Sec. 118-353. Local limits for specific pollutants.
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(c) Discharge concentration limits and review criteria. Discharge concentration limits and review criteria shall be as follows:
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(3) Pollutant limits. Average and maximum concentration limits for users without National Categorical Pretreatment Standards for these pollutants shall be as follows:
|
Pollutant |
Monthly Average (mg/l) |
|
|
Arsenic-T |
0.0046 |
0.0069 |
|
Barium-T |
4.12 |
6.18 |
|
Cadmium-T |
0.16 |
0.24 |
|
Chromium-T |
4.00 |
6.00 |
|
Chromium-Hex |
2.60 |
3.90 |
|
Copper-T |
0.50 |
0.75 |
|
Cyanide-T |
0.13 |
0.20 |
|
Fluoride-T |
7.58 |
11.37 |
|
Lead-T |
0.71 |
1.07 |
|
Manganese-T |
4.24 |
6.36 |
|
Mercury-T |
0.23 |
0.35 |
|
Nickel-T |
0.85 |
1.28 |
|
O&G-T |
-- |
400.00 |
|
O&G-Mineral |
-- |
100.00 |
|
Phenols-T |
5.21 |
7.82 |
|
Selenium-T |
0.39 |
0.59 |
|
Silver-T |
0.45 |
0.68 |
|
TPH |
-- |
10.00 |
|
Zinc-T |
1.00 |
1.50 |
pH range shall be not lower than 5.0 or greater than 12.0.
Temperature (liquids or vapors) shall be not greater than 150 degrees Fahrenheit at the point of entry into the publicly owned treatment works.
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Sec. 2. This ordinance shall be in full force and effect from and after its passage and publication as provided by law.
FORM APPROVED:
Ann DiDonato, Assistant City Attorney
Preston Daniels, Mayor
Attest:
I, Diane Rauh, City Clerk of the City of Des Moines, Iowa, hereby certify that the above and foregoing is a true copy of an ordinance (Roll Call No. 03- 2780), passed by the City Council of said City at a meeting held December 8, 2003 signed by the Mayor on December 8, 2003 and published as provided by law in the Business Record on December 22, 2003 Authorized by Publication Order No. 4007.
Diane Rauh, City Clerk