G-93-05-13-11C - 5/13/1993ORDINANCE NO. 0.- - q3 06- l3 - lie -
AN
JC
AN ORDINANCE AMENDING CHAPTER 10, SECTION 10.412(2)(B),
CODE OF ORDINANCES (1990 EDITION), CITY OF ROUND ROCK,
TEXAS, TO DECREASE THE CHANGE PER POUND OF BOD, TSS
AND COD; PROVIDING FOR A SAVINGS CLAUSE AND REPEALING
CONFLICTING ORDINANCES OR RESOLUTIONS.
BE IT ORDAINED BY THE COUNCIL OF THE CITY OF ROUND ROCK,
TEXAS, THAT:
I.
The Chapter 10, Section 10.412(2)(b), Code of Ordinances (1990
Edition), City of Round Rock is hereby amended to read as follows:
(b) Computation of Surcharge
For those users with discharges exceeding a COD
concentration of four hundred -fifty (450) mg/L, the
surcharge shall be based on COD in lieu of BOD.
Computations of surcharges shall be based on the formulas
below. The surcharges for individual BOD or COD and TSS
are additive.
(i) BOD surcharge
SBOD = V x 8.34 (A[BOD - 250] )
(ii) TSS surcharge
ST -is = V x 8.34 (B[TSS - 250] )
(iii) COD surcharge
ScoD = V x 8.34 (C[COD - 450] )
where:
S = Sum of surcharges in dollars that will appear on
the user's monthly bill.
V = Monthly average volume of nondomestic discharge in
millions of gallons whichever is the least of the
following volumes: (1) total monthly water
consumption during the billing period, (2) the
average water consumption for the billing periods
of December, January, and February of each fiscal
year, or; (3) the total estimated or measured
OR0513C2
nondomestic discharge as determined by methods
specified in the user's permit.
8.34 = Conversion factor for units of measure in
surcharge equations.
A = $.27 per pound of BOD
B = $.27 per pound of TSS
C = $.27 per pound of COD
BOD = BOD concentration in mg/L. For more than one
nondomestic discharge, this shall be the
flow -weighted concentration.
TSS = total suspended solids concentration mg/L.
For more than on nondomestic discharge, this
shall be the flow -weighted concentration.
COD = COD concentration in mb/L. For more that one
nondomestic discharge, this shall be the
flow -weighted concentration.
250 = normal daily average BOD and TSS
concentration in mg/L.
450 = normal daily average COD in mg/L.
II.
A. All ordinances, parts of ordinances, or resolutions in
conflict herewith are expressly repealed.
B. The invalidity of any section or provision of this
ordinance shall not invalidate other sections or provisions
thereof.
Alternative 1.
By motion duly made, seconded and passed with an affirmative
vote of all the Council members present, the requirement for
reading this ordinance on two separate days was dispensed with.
READ, PASSED, and ADOPTED on first reading this �`3£h day
of
7)1 cut
, 1993.
2.
Alternative 2.
READ and APPROVED on first reading this the day of
, 1993.
READ, APPROVED and ADOPTED on second reading this the
day of , 1993.
ATTEST:
NE LAND, City Secretary
MIKE ROBINSON, Mayor
City of Round Rock, Texas
3.
05/11/93 15:36 • . ROUND ROCK PUELIC WORKS 512 255 6676
DATE: May 11, 1993
SUBJECT: City Council. Meeting, May 13, 1993
NO.460 P06
ITEM: 11C. Consider an ordinance amending the Industrial Waste
Ordinance. (First reading)
STAFF RESOURCE PERSON: Jim Nuse
STAFF RECOMMENDATION:
The City of Round Rock has the following sewer surcharge rates in place:
BOD - $2.50/Ib
TSS - $2.50/lb
COD - $2.50/1b
Staff recommends that the City lower these rates to $0.27/1b for BOD, TSS, and COD,
reflecting the actual treatment costs.