HomeMy WebLinkAbout0721ORDINANCE NO. 721 (1977 Series)
AN ORDINANCE OF THE CITY OF SAN LUIS OBISPO
AMENDING MUNICIPAL CODE ARTICLE VII, CHAPTER
5, SECTION 7501, STANDARDS AND REGULATIONS FOR
QUALITY OF SEWER DISCHARGE.
BE IT ORDAINED by the Council of the City of San Luis Obispo as
follows:
SECTION 1. Municipal Code Article VII, Chapter 5, Section 7501,
Standards and Regulations for Quality of Sewer Discharge, is hereby amended
to read as follows:
< <SEMON 7501. Standards and Regulations for Quality of Sewer Discharge.
No person shall discharge or cause to be discharged any storm water, surface
water, ground water, roof runoff, subsurface drainage, cooling water, swimming pool
water, swimming pool backwash water, or unpolluted industrial process waters to any
sanitary sewer.
A. Storm water and all unpolluted drainage shall be discharged to such sewers
as are specifically designated as storm sewers, or to a natural outlet approved by
the Director of Public Services. Industrial cooling water or unpolluted process
waters may be discharged, upon approval of the Director of Public Services, to a
storm seer or natural outlet. Appropriate permits from all affected public
agencies may be required by the City and shall be obtained by the applicant.
B. Discharge quality. Except as hereinafter provided, no person shall dis-
charge or cause to be discharged any of the following described waters or wastes
to any public- sewers. - -
DFR:ktm 8/22/77 0 721
1. Any liquid or vapor having a temperature higher than 150° F.
2. Any water or waste containing grease, as follows:
a. Floatable grease in excess of 25 parts per million. Grease is an oil,
fat, grease, or other ether - soluble matter. Floatable grease is grease
which rises to the surface of quiescent sewage or waste or upon dilution
of the sewage or waste with fresh or salt water.
b. Dispersed grease, other than soap, in excess of 500 parts per million.
Dispersed grease is grease which is not floatable.
3. Any gasoline, benzene, naptha, fuel oil, or other flammable or explosive
liquid, solid or gas.
4. Any garbage that has not been properly shredded.
5. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers,
tar, plastics, woods, paunch manure, or any other solid or fiseous substance
capable of causing obstruction to the flow in sewers or other interference
with the proper operation of the sewage works.
6. Any water or wastes having .a pH lower than 6.0 or higher than 9.0, or having
any other corrosive property capable of causing damage or hazard to struc-
tures, equipment, and personnel of the sewage works.
7. Any waters or wastes containing a toxic or poisonous substance in suf-
ficient quantity to injure or interfere with any sewage treatment process,
constitute a hazard to humans or animals, or create any hazard in the
receiving waters of the sewage treatment plant.
8. Any waters or wastes containing suspended solids of such character and
quantity that unusual attention or expense is required to handle . such
materials at the sewage treatment plant
9. Any noxious or malodorous gas or substance capable of creating a public nuisance.
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VIR/777
161 -A
10. Any wastewater containing in excess of:
15.0
mg /1
aluminum
1.0
mg /l
arsenic
0.25
mg /l
cadmium
0.5
mg /l
chromium
0.5
mg /1
copper
7.5
mg /l
fluoride
30.0
mg /l
iron
0.5
mg /l
lead
0.01=
mg /1
mercury
0.1
mg /l
selenium
3.0
mg /l
zinc
2.0
mg /1
M.B.A.S. (foaming agent)
1.0
mg /l
phenol
30.0
mg /1
ammonia
300.0
mg /l
sulfate
7.5
mg /1
boron
Any wastewater, other than water- softening regeneration brine, containing
in excess of:
1600 mg /l total dissolved-solids
300 mg /l sodium
300 mg /l chloride
11. Plants discharging water - softening brine shall not be restricted in the
concentrations of total dissolved solids, sodium, or chloride of the
wastewater discharged. However, such plants shall make all reasonable
efforts to minimize the discharge of these substances. Reasonable
efforts include brine reclamation and use of minimum effective quantities
of salt for regenerating portable exchange units. A maximum of 12 lbs.
net of sodium chloride per cubic foot of portable exchange water soft-
ener units regenerated shall not be exceeded. Such plants shall main-
tain records of monthly sodium chloride usage and monthly volume of
portable exchange units regenerated and shall make these records
available to the City for review upon request.
12. The admission into the public sewers of any waters or wastes having (a) a
5 -day Biochemical Oxygen Demand greater than 300 parts per million'by weight, or
(b) containing more than 350 parts per million by weight of suspended solids, or
(c) containing any quantity of substances having the characteristics described in
"B" of this Section, or (d) having an average daily flow greater than 2 percent
of the average daily sewage flow of the City of San Luis Obispo, shall be subject
to the review and approval of the Director of Public Services. Where necessary in the
opinion of the Director of Public Services, the owner shall provide, at his expense,
such preliminary treatment as may be necessary to (a) reduce the Biochemical Oxygen
Demand to 300 parts per million and the suspended solids to 350 parts per million
by weight, or (b) reduce objectionable characteristics or constituents to within
the maximum limits provided for in "B" of this Section, or (c) control the quantities
and rates of discharge of such waters or wastes. Any facilities required to pre-
treat to a level acceptable to the City shall be provided and maintained at the user's
expense. Detailed plan s showing the pretreatment facilities and operating procedures
shall be submitted to the City for review, and shall be acceptable to the City before
construction of the facility. The review of such plans and operating procedures will
in no way relieve the user from the responsibility of modifying the facility as
Revised 1/77
161 -C
necessary to provide the protection necessary to rieet the requirements of this
W*.. -
C. Effluent limitations promulgated by the Federal [^later Pollution Control
Act, PL 92 -500, shall apply in any instance where they are more stringent than
those in this Section. Under Section 307(b) of the Act, Federal pretreatment
standards are designed to achieve two purposes: (1) to protect the operation
of publicly owned treatment works, and (2) to prevent the discharge of pollutants
which pass through such works inadequately treated. Users in industrial categories
subject to effluent guidelines issued under Section 304(b) of the Act, which are
discharging inccmpatible pollutants to public owned treatment works, are required
to adopt best practicable control technology currently available, as defined by
the Administrator pursuant to Section 304(b) of the Act. For scene industrial
categories it may be necessary to define pretreatment guidelines for problems that
may arise as a result of the discharge into publicly owned treatment works. How-
ever, any adjustments required for particular industrial categories should be con-
sidered in connection with the City's requirements rather than in the national
pretreatment standard. Limitations on wastewater strength in this Chapter may be
supplemented with more stringent limitations if:
1. The City.determines that the limitations in Section 7501 -B may not be
sufficient to protect the operation of the City's treatment works, or
2. The City determines that the limitations in Section 7501 -B may not be
sufficient to enable the City's treatment works to comply with water quality standards
or effluent limitations specified in the City's National Pollutant Discharge Elimi-
nation System (NPDES) permit.
D. Grease, oil and sand interceptors shall be provided when, in the opinion
of the Director of Public Services, they are necessary for the proper handling of
liquid wastes containing grease in excessive amounts, or any flammable wastes, sand,
and other harmful ingredients; except that such interceptors shall not be required
Revised 1/77
161 -D
for private living quarters or dwelling units. 1111 interceptors shell be ot: a tyjx�
and capacity approved by the Director of Public Services, and shall be located as
to be readily and easily accessible for cleaning and inspection.
Grease and oil interceptors shall be constructed of impervious materials capable
of withstanding abrupt and extreme changes in temperature. They shall be of sub-
stantial construction, watertight, and equipped with easily removable covers which,
when bolted in place, shall be gas -tight and watertight.
Where installed, all grease, oil and sand interceptors shall be maintained
by the owner, at his expense, in continuously effici,:ilt operation at all times.
E. Where preliminary treatment facilities are provided for any waters or
wastes, they shall be maintained continuously in satisfactory and effective opera-
tion, by the owner at his expense.
F. When required by the Director of Public'Services, the owner of any property
served by a building sewer carrying industrial wastes shall install a suitable
control manhole in the building sewer to facilitate observation, sampling and
measurements of the wastes. Such manhole, when required, shall be accessible and
safely located, and shall be constructed in accordance with plans approved by the
Director of Public Services. The manhole shall be installed by the owner at his
expense, and shall be maintained by him so as to be safe and accessible at all times.
G. All measurements and tests and analyses of the characteristics of waters
and wastes to which reference is made in "B" and "C" shall be determined in accordance
with "Standard Methods for the Examination of Water and Sewage," and shall
be determined at the control manhole provided for in "F ", or upon suitable samples
taken at said control manhole. In the event that no special manhole has been re-
quired, the control manhole shall be considered to be the nearest downstream manhole
in the public sewer to the point at which the building sewer is connected. The
cost of any program of regular testing required by the Director of Public Services
shall be billed directly to the industry or business involved.
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161 -E
a
H. No statement contained in this article shall be construed as preventing
any special agreement or arrangement between the City of San Luis Obispo and any
industrial concern vhereby an industrial waste of unusual strength or character
may be accepted by the City for treatment, subject to payment therefor by the
industrial concern of all City costs connected with such extra treatment.
I. Drainage below curb and also below main sewer level:
1. Drainage piping serving fixtures, the flood level rims of which, are
located below the elevation of the curb or property line, at the point where the
building sewer crosses under the cum or property line, and above the crown level
of the main sewer, shall drain by gravity into the main sewer, and shall be
protected from back flow of sewage by installing an approved type backwater valve,
and each such backwater valve shall be installed only in that branch or section of
the drainage system which receives the discharge from fixtures located below the
elevation of the curb or property line. If the drainage piping is lower than the
next upstream manhole, the property owner may be required to install a backwater
valve.
2. Director of Public Services empowered to stop overflow. If the property
owner fails to install and maintain a backwater trap or backwater valve in good
working condition, when required under this Section, the Director of Public Services
may order and require said plumbing fixture to be disconnected and removed and the
outlet plugged or capped. In the event that the property owner fails to disconnect
and plug or cap the sewer connection within ten (10) days after written notice by
the Director of Public Services, then the Director of Public Services shall arrange
for such disconnection and capping; the cost of which shall be a debt of the property
owner and which my be collected by court action or may be declared to be a lien
by action of the City Council after public hearing and notice to the property owner
and shall be added to and collected as part of the tax roll.
3. Alternate right to terminate water service. As an alternate to the procedure
set forth above, if the property owner fails to install and maintain a backwater
Revised 1tk /77
161 -F
. 'trap or backwater vale, n good working condition when - _juested cuhc�k r this
part, the Director of Public Services may order and require to iiii.nation of
water service to the parcel and all structures connected to the sewer outlet
subject'to overflow. Said water service shall not be reinstated until the
maintenance or installation of the backwater trap or backwater valve has been
approved by the Director of Public Services.
4. Maintenance of House Connection Sewers. All house connection sewers,
industrial sewers, private sewage disposal systeras and appurtenances thereto, now
existing or hereafter constructed, shall be maintained by the owner of the
property in a safe and sanitary condition and all devices or safeguards which are
required by the section for the operation thereof, shall be maintained in a
good working order.
J. Powers and authority of Inspectors.
1. Inspection of Premises. The Director of Public Services, the Health
Officer, and other duly authorized employees of the City and the Health Department
bearing proper credentials and identification shall be permitted to enter all
properties for the purposes of inspection, observation, measurement, sampling,
and testing in accordance with the provisions of this ordinance. Me Director of
Public Services, the Health Officer, or their representatives shall have no authority
to inquire into any processes including metallurgical, chemical, oil, refining,
ceramic, paper, or other industries beyond that point having a direct bearing on
the kind and source of discharge to the sewers or waterways or facilities for
waste treatment.
2. Liability for Injury. Mile performing the necessary work on private
properties referred to in "J" above, authorized employees of the City or Health
Department shall observe all safety rules applicable to the premises established
by the company, and the company shall be held harmless for injury or death to
such employees, and the City shall indemnify the company against loss or
damage to its property by such employees and against liability claims and demands
Revised 1/77 161 -G
for personal injury or property damage asserted against the conViany and growing
out of the gauging cued s milling operation, except as such may be caused by
negligence or failure of the'company to maintain safe conditions as required
in this ordinance.
3. Rights of City Entry. The Director of Public Services, the Health
Officer, and other duly authorized employees of the City or Health Department
bearing proper credentials and indentification shall be permitted to enter all
private properties through which the City holds a duly negotiated easement for
the purposes of, but not limited to, inspection, observation, measurement, sampling,
repair, and maintenance of any portion of the sewage works lying within said
easement. All entry and subsequent work, if any, on said easement shall be done
in full accordance with the terms of the duly negotiated easement pertaining to
the private property involved.
SECTION 2. This ordinance, together with the ayes and noes, shall be
published once in full, at least three days prior to its final passage, in
the Telegram- Tribune, a newspaper published and circulated in said city, and
the same shall go into effect at the expiration of 30 days after its said
f inal.passage.
INTRODUCED AND PASSED TO PRINT by the Council of the City of San Luis
Obispo at a meeting thereof held on the 6th day of September 1977, on
motion of Councilman Petterson , seconded by Mayor Schwartz
and on the following roll call vote:
. ORDINANCE NO. 721
AYES:
NOES:
ABSENT:
ATTEST:
Councilmen Petterson, Dunin, Jorgensen and Mayor Schwartz
None
Councilman Gurnee
C' lerk .H. Fitzpatrick
Approved as to form:
WENDT, MITCHELL, SINSHEIMER,
de la MOTTE & L LEY
City Attorney
ILIt
By Allen Grimes
Approved as to content:
City Administrative Officer
Director of Public Services
ORDINANCE NO. 721
FINALLY PASSED this 20th day of September 19 77 ,
on motion of Councilman Dunin seconded by
Councilman Petterson on the following roll call vote:
AYES: Councilmen Dunin, Petterson, Jorgensen, Gurnee and Mayor Schwartz
NOES: None
ABSENT: None
ATTEST:
Fitzpatrick, CITY CLERK