HomeMy WebLinkAboutOrdinance - 7415-1977 - Amending Chapt. 34 Regulating Construction/Maintenance Of Individual Sewage Disp - 03/10/1977J:lb
ORDINANCE NO. 7415
AN ORDINANCE AMENDING CHAPTER 34 OF THE CODE OF ORDINAN-
ES OF THE CITY OF LUBBOCK, TEXlAS, BY AMENDING SUBSECTION {:B) F
ECTION 34-95. 1 THEREOF REGULATING THE CONSTRUCTION AND/OR
AINTENANCE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEMS; PROVIDING
OR A PERMIT AND A PERMIT FEE; PROVIDING A SAVINGS CLAUSE AND
ROVIDING FOR PUBLICATION.
WHEREAS, the City Council, after receiving the recommendations of the
ity Board of Health, has determined that the changes indicated below would
e in the best interest of the health, safety and welfare of the citizens of the
ity of Lubbock; NOW THEREFORE:
E IT ORDAIN"ED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. THAT Regulation 2 of Sub-section (B) of Section 34-95. 1 of
he Code of Ordinances. City of Lubbock, BE and is hereby amended to read
s follows:
"Regulation 2. Volume of Sewage. Excepting as stated
elsewhere in this regulation, calculation of the anticipated
volume of sewage from a structure shall be based on the
estimated contributory population and the expected per
capita daily quantities of sewage given in the following
table;
TABLE I
TYPE OF ESTABLISHMENT
Small dwellings and cottages with seasonal
occupancy
Single -family dwellings
Multiple -family dwellings (apartments)
, Rooming houses
Boarding houses
Additional kitchen wastes for non-resident
boarders
Hotel without private baths
Hotels with private baths (two persons per room}
Restaurants (toilets and kitchen wastes per patron)
Restaurants (kitchen wastes per meal served)
Additional for bars and cocktail lounges
Tourist camps or trailer parks with central
bathhouse
GAL/PERSON /DAY
50
75
60
40
50
10
50
60
7 to 10
2 1/2 to 3
2
35
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Tourist courts or mobile home parks with
individual bath units
Resort camps (night and day) with limited
luxury camps
Work or construction camps {semi-permanent)
Day camp (no meals served)
Day schools without cafeterias, gymnasiums,
and showers
Day schools with cafeterias, gymnasiums, and
showers
Boarding schools ;§!
Day workers at schools and offices (per s Wift)
Hospitals
Institutions other than hospitals
Factories {gallons per person per shift, exclu-
sive of industrial wastes)
Picnic parks (toilet wastes only) (gallons per
person)
Picnic parks with bathhouse, showers, and
flush toilets
Swimming pools and bathhouses
Luxury residences and estates
Countyy clubs (per resident member)
Country clubs (per non-resident member present)
Motels (per bed space)
Motels with bath, toilet, and kitchen wastes
Drive-in theaters (per car space)
Movie theaters (per auditorium seat)
Airports (per passenger)
Self-service laundries (gallons per wash, i.e.,
per customer
Stores (per toilet room)
Service stations (per vehicle serviced
50
10§1 to 150
50
15
20
25
'
-7.5 to 100
15
150 to 250
75 to 125
15 to 35
5
10
10
100 to 150
100
25
40
50
5
5
3 to 5
50
400
10
SECTION 2. THAT Regulation 1 of Sub-section (C) of Section 43-95. 1 of
the Code of Ordinances, City of Lubbock, BE .and is here by amended to read
as follows:
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Regulation 1. Distances. The location of the component
parts of an individual disposal system shall conform to
the following table:
MINIMUM DISTANCES FROM
COMPONENT WELL WATER SUPPLY {a)STREAM PROPERTY
FEET LINE FEET FEET LINE FEET
Building sewer 50 (h) ----
Septic tank 50 (c) 25 10
Disposal field 150 10 25 . 15 _.·,
---
~OMPONENT DWELLING
FEET .
[Building sewer ----:;-'
Septic tank 6
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, Disposal field 10 ~~~~---~---------------------~------------~----------~--~---~~·~·,1 ·
(a) Where coarse soil formations are encountered the distance
from any water supply or stream may be increased by the
Department.
(b) 1 foot above and 1 foot laterally. •
(c) May not cross.
SECTION 3. THAT Sub-section (D) of Section 34-95. 1 of the Code of
Ordinances, City of Lubbock, BE and is hereby amended to read as follows:
(D) SEPTIC TANK SPECIFICATIONS
Regulation 1. Septic Tank Capacities.
(a) Septic tanks shall have the following minimum capacities to
flow line.
HOMES
NUMBER OF BEDROOMS
A. Two bedroom or less
B. Three bedroom
·C. For each additional bedroom
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LIQUID CAPACITY OF
TANK IN GALLONS
7 50 (minimum}
1000 11
250 11 -
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Regulation 2. Multiple Compartments. Where multiple
compartment tanks are used the following are required:
(a) The total capacity of multiple compartment tanks
shall not be less than 750 gallons. The first compart-
ment shall have a liquid capacity of 2/3 the required
total tank capacity as determined from Regulation 1,
this section.
(b) Not more than 2 oompartments shall be provided
in tanks having liquid capacities between 750 gallons
and 1200 gallons.
Regulation 3. Construction.
(a} Septic tanks shall be of approved shape. soWld water-
tight, constructed of durable materials not subject to ex-
cessive corrosion, decay. cracking or buckling. Covers
shall be designed and constructed to support any reasonable
load.
(b) The walls and base of concrete tanks shall be securely
bonded together or shall be on monolithic or keyed construc-
tion. Walls and base of poured-in-place tanks shall have
a minimum thickness of 4 inches throughoutt A minimum
thickness of 3 inches will be allowed in pre-cast tanks which
have been properly reinforced.
Regulation 4. Materials. Septic tanks may be constructed
of the following;
(a) Poured-.in-place concrete
(b) Pre-cast reinforced concrete
(c) Other approved material
Regulation 5. Inlets and Outlets. Outlet connections of each
compartment of the tank shall be designed to retain sewage
solids, scum and sludge effectively. The elevation of the in-
vert of the inlet shall be at least 211 above the elevation of the
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invert of the tank tank outlet. The bottom of the baffle or
tee shall extend at least 12" below the surface of the liquid
and the top shall be at least 411 above the invert of the out-
let and not less than 1 ~' below the cover.
Regulation 6. Reinforeementa. A septic tank installed under
a driveway or parking area shall have a reinforced concrete
cover with a minimum thickness of 6", side-walls of adequate
strength to support any anticipated load~ access plugs brought
up to grade.
SECTION 4. THAT Sub-section (C) of Regulation 2 of Sub-section (F) of
~ection 34-95. 1 of the Code of Ordinances, City of Lubbock, BE and is hereby
!amended to read as follows:
(c) Leaching Field.
(1) Minimum Percolating Area (Individual Dwellings).
Average
~ercolation Rate
(Minutes per inch)
1
3
4
5
10
15
30
45
60
Over 60
The minimum required percolating area per bed-
room shall be determined from the following table
provided that the total bottom trench area shall
not be less than 150 square feet for each dwelling
unit.
Required Trench
Bottom Area Per Bedroom
(Square Feet)
85
100
115
125
165
190
250
300
330
Not acceptable
*Minimum Trench
Bottom Area Allowed
(Square Feet)
170
200
230
250
330
380
500
600
660
Not acceptable
(2) Minimum Percolating Area (Other Than Individual '·
Dwelling). The minimum required percolating area
shall be determined from the following table provided
that the total trench area shall not be less than 150
square feet.
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Percolation Rate
(time in minutes
for water to fall
one inch)
Maximum Rate of Sew age Application
(gallons per square foot per day*) for
standard trenches**
1 or less. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 5. 0
2. . . . . .. . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • 3. 5
3 .............................................. 2.9
4 .............................................. 2.5
5. . . . . . • . • . • . . . . . • . • . . . . . • • • . . . . . . . . . . . • . . . . • • 2. 2
10........ . . . . . . . . . . . . . . . . . • • . . . . . . . . . . . . . . . . . . 1. 6
15. . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . 1. 3
30. . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . o. 9
45.. . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . • . . o. 8
***6 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 6
(3) Disposal Trench Construction -Disposal trenches
shall be constructed in accordance with the follow-
ing table:
Minimum lines per field
Maximum length per line
Minimum diameter of d istribution
lines
Preferred slope of distribution l ines
Maximum slppe of districution lines
Minimum w idth of trench bottom
Minimum distance between distribution
lines
Miniinum percolation area per dwelling
Maximum depth of lines
Top depth of lines
Minimum filter co:per over pipe
Minimum filter under pipe
2
100 feet
4 inches
2" to 4 11 in 100 feet
6" in 100 feet
18 inches
6 feet
150 square feet
30 inches
18 inches belmw
grade
2 inches
6 inches
SECTION 5. THAT Sub-section (H) of Section 34-95.1 of the Code of
Ordinances. City of Lubbock. BE and is hereby amended to read as follows:
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(H) Fees
Permit Fees: Individual sewage disposal system installation
permit -$10. 00
Percolation Te:s:t -$12. 50 per hole
Cesspool and· septic tank emptying permit -$25. 00 per year.
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SECTION 6. THAT should any section~ paragraph, sentence, clause~
hrase.:or word of this Ordinance be declared unconstitutional or invalid for
any reason~ the remainder of this Ordinance shall not be affected thereby.
SECTION 7. THAT the City Secretary is hereby authorized to cause pub-
ication of the descriptive caption of this Ordinance as an alternative method
rovided by law.
AND IT IS SO ORDERED.
assed by the Council on first reading this lOth day of March , 1977
assed by the Council on second reading this _6L day of_~Ma:::.r:::..:c:::h:..___-,-_, 1977
-R~YOR