HomeMy WebLinkAbout105 - 10/19/1993 - AMENDING CITY CODE PERTAINING TO WASTEWATER DISCHARGE LIMITATIONS ORDINANCE NO. 105, 1993
OF THE COUNCIL OF THE CITY OF FORT COLLINS
AMENDING SECTION 26-343 OF THE CODE OF THE CITY
OF FORT COLLINS PERTAINING TO WASTEWATER
DISCHARGE LIMITATIONS
BE IT ORDAINED BY THE COUNCIL OF THE CITY OF FORT COLLINS that Section 26-
343 is hereby repealed and reenacted to read as follows:
Sec. 26-343. Discharge limitations.
(a) Numeric limitations. The following are the pollutant
limitations for discharges of wastewater:
Maximum
Parameter Concentration (mv/7) Sample Type
aluminum, total 19.4 composite
arsenic, total 0.09 composite
boron, total 7.2 composite
cadmium, total 0.05 composite
chromium, hexavalent 0.34 grab
chromium, total 2.4 composite
copper, total 1.0 composite
cyanide, amenable 0.16 grab
cyanide, total 1.01 grab
iron, total 194 composite
lead, total 0.25 composite
manganese, total 3.3 composite
mercury, total 0.0003 composite
molybdenum, total 0.30 composite
oil and grease 187 grab
pH, minimum 5.0 grab
pH, maximum 9.0 grab
nickel , total 0.60 composite
selenium, total 0.05 composite
silver, total 0. 10 composite
temperature (degrees C.) 65.0 grab
zinc, total 2.0 composite
(b) Fluoride. Discharges of fluoride by significant industrial
users shall be limited by an Industrial Discharge Permit. Permit
limitations will be based on a maximum allowable total discharge of
two hundred eighteen (218) pounds of fluoride per day.
(c) Silver from photograph and x-ray development. The
concentration of silver in discharges resulting from the development
of photographs or x-rays is limited to a maximum of one hundred
(100) mg/l . The limit applies at the end of the development
process, downstream of any pretreatment by the discharger, and prior
to dilution with other wastewater. Unacidified grab samples shall
be analyzed for compliance monitoring.
(d) Volatile organic compounds. Organic compounds that may
cause or result in toxic fumes or vapors in the wastewater
collection system are limited to a maximum concentration in
discharges of wastewater calculated by the formula:
Maximum Concentration in mg/1 = (TLV/TWA)/HLC
Where:
TLV/TWA = The compound's Threshold Level Value/Time-
Weighted Average in mg/m3 as listed in the
American Conference of Governmental
Industrial Hygienists' Guide to
Occupational Exposure Values-1992, or
latest edition.
HLC = The compound's Henry's Law Constant in
(mg/m3)/(mg/l ) -
Introduced, considered favorably on first reading, and ordered published
this 21st day of September, A.D. 1993, and to be presented for final passage on
the 19th day of October, A.D. 1993.
or
ATTEST:
City Clerk
Passed and adopted on final reading this 19th day of obey, A.D. 1 3.
t
ATTEST: ayor
City Clerk