ORDINANCE NO. 4122
AN ORDINANCE AMENDING SECTIONS AND/OR PORTIONS OF SECTIONS OF ARTICLE II OF CHAPTER 38, UTILITIES,
OF THE
CODE OF ORDINANCES
Recitals:
A renewed National Pollutant Discharge Elimination System (NPDES) Permit was issued to the Persigo Wastewater Treatment Plant effective November 1, 2006. Federal regulations require the revision of industrial pretreatment local limits within 270 days from the issuance of the new discharge permit.
The industrial pretreatment local limits will be revised through this Ordinance. There are no resulting impacts to local industries resulting from this change.
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAND JUNCTION THAT:
Chapter 38, section 49 of the Code of Ordinances is amended as follows:
Section 38-49 (18) Mass Based Local limits:
The following non-domestic discharge limitations are established to protect sludge quality and prevent Pass Through and Interference with the proper operation of the WWTW. These limits are shown in pounds per day. They reflect the total industrial contribution that can be discharged by permitted industrial users and received at the headwork’s of the WWTP. These are called maximum allowable industrial loads (“mails”):
POLLUTANT *POUNDS PER DAY
Arsenic 12.300
Cadmium 3.057
Chromium (T) 67.685
Chromium (VI) 2.960
Copper 41.350
Lead 14.095
Molybdenum 7.652
Mercury 0.026
Nickel 23.937
Selenium 0.278
Silver 3.015
Zinc 104.246
*Maximum daily industrial loadings shall be allocated through industrial user permits and the total loading to all permitted industrial users shall not exceed the limits shown.
The remainder of Chapter 38, not specifically amended herein, shall remain in full force and effect.
Introduced on first reading this 15th day of August 2007.
PASSED and ADOPTED on second reading this 17th day of October 2007.
/s/ James J. Doody
James J. Doody
Mayor
Attest:
/s/ Stephanie Tuin
Stephanie Tuin
City Clerk