(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
When used in this article, these terms shall be defined as follows:
Any sewage having a total suspended solids (TSS) or biochemical oxygen demand (BOD) content in excess of that found in normal domestic wastewater but which is otherwise acceptable into a sanitary sewer under the terms of this article and article II of chapter 82 of this Code.
The charge levied against any person for services rendered
during treatment of abnormal sanitary sewage or waste. This charge
shall be in addition to the usual monthly charge for sanitary sewage
service.
The quantity of oxygen utilized in the biochemical oxidation
of organic matter specified by procedure in "Standard Methods," and
results expressed in terms of weight and concentration (milligrams
per liter (mg/L)).
The city of Burleson, Texas.
A sample of the wastewater discharged to the collection system
by a user and composed of a series of not less than three samples
taken during the periods when industrial wastes are being discharged.
The period of time over which the samples are collected for compositing
into a single sample shall not exceed 24 hours. The series of samples
may be collected on a time-proportional or flow-proportional basis.
The director of public works for the city or his/her designee.
A single sample of effluent flow taken at any time.
Milligram per liter.
Parts per million.
Any individual, business, partnership, any type of corporation,
governmental agency, or political subdivision.
Is the abbreviation for publicly owned treatment works and
means any sewage treatment plant and the sewers, watercourses and
appurtenances thereto, owned and operated by the city or by others
under contract to treat the city's sewage.
A publicly owned pipe or conduit designed to collect and
transport industrial waste and domestic sewage to the POTW.
A water-carried human wastes or a combination of water-carried
wastes from residences, business buildings, institutions and industrial
establishments, together with such ground, surface, storm or other
waters as may be present.
An obligation to do some act, and is mandatory.
Shall have the same meaning as the term is defined in section 82-41 of this Code.
Any person who contributes, causes or permits the contribution
of wastewater into the city's sanitary sewer.
Industrial waste, sewage or any other waste that has been
used by and discharged from an industry, commercial enterprise, household
or other water consumer, including that may be combined with any ground
water, surface water or storm water, that may be discharged to the
POTW. Said water may be either polluted or unpolluted.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
(a)
The
abnormal sewage surcharge shall be calculated per 1,000 gallons metered
using the following formula:
|
S = {b X (B-DB) + t x (T-DT)} x 8.34/10,000 X 1.05
|
|
S
|
=
|
Surcharge rate
|
|
B
|
=
|
BOD strength
|
|
T
|
=
|
TSS strength
|
|
b
|
=
|
BOD $/lb.
|
|
DB
|
=
|
Normal BOD strength
|
|
T
|
=
|
TSS $/lb.
|
|
DT
|
=
|
Normal TSS strength
|
|
8.34
|
=
|
lbs./gallon
|
|
10,000
|
=
|
Meter units
|
|
1.05
|
=
|
Sampling recovery factor
|
(b)
The
volume of flow used in computing abnormal sewage surcharges shall
be based upon metered water consumption as shown in the meter reading
records maintained by the city.
(c)
Any
user who procures any part or all of his water supply from sources
other than the city, all or part of which is discharged into the sanitary
sewer system, shall install and maintain, at their expense, water
meters of the type approved by the city for the purpose of determining
the proper volume of flow to be used in computing sewer service charges.
Such meters shall be read monthly and tested for accuracy when deemed
necessary by the city.
(d)
In
those circumstances where a user desires a credit for metered water
being consumed, but not being returned to the sanitary sewer, a volume
credit shall be allowed if said water user installs an effluent meter
or meters to measure wastewater flow. Said meter shall be installed
and maintained at the customer's expense, be installed pursuant to
plans and specifications approved by the city, be installed in an
approved location, be calibrated annually and a certified calibration
statement for said meter be annually provided the city, and have a
totalization device. The aforementioned calibration shall be witnessed
by a representative of the city.
(e)
In those circumstances where a user desires a credit for metered water being consumed but not being returned to the sanitary sewer, and further where subsections (b), (c), and (d) are not applicable, it shall be the responsibility of the user to provide satisfactory evidence of discharge reduction upon which an accurate credit can be estimated, and the city may estimate said discharge upon the presentment of such evidence.
(f)
If
the city finds that it is not practicable to measure the quantity
or quality of waste by the aforesaid meters or monitoring devices,
it shall determine the quantity or reality of the waste in any manner
or method it may find practicable in order to arrive at the percentage
of water entering the sanitary sewer system of the city or the quality
of the sewage to be used to determine the sewer service charge and
the abnormal sewage surcharge for class groups.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
Commercial and industrial establishments hereafter described
as class I, II, and III which discharge wastewater into the city sanitary
sewer system shall be required to meet the requirements of this section:
|
Class
|
Description
|
|---|---|
|
I
|
Eating places: includes restaurants, bars, lounges, and other
establishments which engage in preparation of food or beverage which
is served directly to the consumer.
|
|
II
|
Equipment service facilities: includes establishments which
perform or provide washing, cleaning, or servicing, of automobiles,
trucks, buses, machinery, or equipment, this class to include public
facilities, facilities limited to specific companies, attended and
coin operated establishments.
|
|
III
|
Food and kindred products processing: includes commercial establishments
which engage in the preparation, packaging, processing, or distribution
of food, food other than those included in class I and which discharge
less than 150,000 gallons of wastewater per month.
|
All commercial and industrial establishments falling within one or more of the above class groups shall be subject to and pay a surcharge as set forth in section 82-302.
At the discretion of the director, any commercial or industrial
establishment may be monitored individually.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
A surcharge shall be charged the customers based on wastewater
strength determination for that particular class group. Strengths
for BOD and TSS are determined for each class group shall be based
on the following levels:
|
Class I
|
BOD = 1,193 mg/L
|
|
TSS = 526 mg/L
| |
|
Class II
|
BOD = 267 mg/L
|
|
TSS = 1,079 mg/L
| |
|
Class III
|
BOD = 752 mg/L
|
|
TSS = 423 mg/L
| |
|
Normal Domestic
|
BOD = 210 mg/L
|
|
Wastewater
|
TSS = 240 mg/L
|
These strengths may be revised from time to time based on study
information from the federal, state, or local government.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
If a commercial or industrial establishment contains operations
from more than one class group and it is determined that the surcharge
rate for a particular class group would not adequately compensate
the city for its costs of treatment, then the director of public works
or his designee may assess an additional charge based on a proportional
average of the class groups involved or he may require the commercial
or industrial establishment to be billed for an abnormal surcharge
which is based on the maximum values of BOD or TSS from either class
group.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
(a)
A commercial
or industrial establishment placed into a class group may elect to
have its surcharge determined on an annual basis from composite samples
in lieu of the class averages provided that:
(1)
The establishment submits to the director, in writing, a request
to have its surcharge determined from composite samples in lieu of
class averages;
(2)
The requesting establishment installs, at their sole expense, a manhole
or sample tee built to the director's specifications and approved
by the director;
(3)
The requesting establishment obtains and strictly adheres to a self-monitoring procedure to include sampling and analyses as prescribed by the director. Such collections and analyses shall be at the sole expense of the requesting entity. The city may provide monitoring after placement of the manhole or sample tee as provided in subsection (2) above, with the requesting establishment compensating the city for its actual expenses; and
(4)
The requesting establishment agrees and understands that the city
shall obtain shook samples, either grab or composite, from the monitoring
site for the purpose of checking the accuracy of the self-monitoring
procedures and analyses prescribed above and that in the event of
discrepancies, the city's data or the normal average strengths of
the appropriate class, shall be used for determining the surcharge.
(b)
The
laboratory employed by the requesting industry shall be approved by
the director prior to implementation of self-monitoring. Subsequent
changes in the laboratory shall require prior approval.
(c)
The
results of the composite samples shall be made available and delivered
to the director by March 1 each year the requesting establishment
elects to have its surcharge determined on an annual basis from composite
samples under this section. If the requesting establishment does not
make results available and deliver them to the director by March 1,
the election shall be invalid for that year and the establishment's
surcharges shall be determined by class averages.
(Ord. No. CSO#1116-09-2019, §
1, 9-16-2019)
The industrial surcharge for significant industrial users shall
be calculated individually (and not as part of a class group) in the
same manner and under the same terms and conditions as if the SIU
was initially a member of a class group and elected for a surcharge
determination from composite samples in accordance with section 80-306.
