CITY OF GRAND JUNCTION, COLORADO

 ORDINANCE NO. 2710

Recitals.

 The EPA and the City's Pretreatment Coordinator have recommended certain changes to the Pretreatment Ordinance (part of Chapter 25 of the City Code) to comply with applicable federal law and regulations.

 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAND JUNCTION THAT:

 1. That provisions which are attached hereto, and made a part hereof by this reference, are adopted in their entirety and shall replace the existing provisions.

 2. The attached Code provisions (consisting of Chapter 25, Article X, Section 25-60 (f)(1) shall become effective upon receipt of EPA approval.

 Introduced on first reading this 6th day of October, 1993.

 PASSED and ADOPTED on second reading this 20th day of October, 1993.

_______________________

Mayor

ATTEST:

_______________________________

Stephanie Nye, City Clerk

 Chapter 25, Article X, Section 25-60 (f) (1)

(1)  The local limits set and prescribed by the WWTW Pretreatment Coordinator are as follows and shall be administered in accordance with the appli­cable provisions of the CFR. Local limits shall be enforced to the more stringent of the adopted local limits or those required by the CFR.

Ammonia (NH3), mg/l................... 40

Cadmium, total, mg/l.................. 0.30

Chromium, total, mg/l................. 5

Copper, total, mg/l................... 5

Cyanide, total, mg/l.................. 1.2

Lead, total, mg/l..................... 0.69

Mercury, total, mg/l.................. 0.08

Nickel, total, mg/l................... 3.98

Silver, total, mg/l................... 0.43

Zinc, total, mg/l..................... 5.0

Phenol, mg/l.......................... 10

Arsenic, mg/l......................... 0.7

Selenium, total, mg/l................. 0.5

TDS (total dissolved solids), mg/l.... 628

PCB's (polychlorinated biphenyls), mg/l 0.002

pH, standard units.................... 5.5 To 9.5

Fats, oils and grease:

 a. Animal and vegetable fats, mg/l 100

 b. Petroleum base oils and grease mg/l 50