Texas Register, Volume 5, Number 5, Pages 163-206, January 18, 1980 Page: 195
163-206 p. ; 28 cm.View a full description of this periodical.
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ADOPTED RULES
195defined by EPA, with exceptions applicable to certain oxida-
S tion pond systems, as reduction to the following effluent
quality:BOD, mg/1
Suspended Solids
(TSS), mg/1
pH, units30-Day Average
30
30
Within limits of
6.0 - 9.07-Day Average
45
45Furthermore, in this definition, the reduction of BOD and
TSS through a treatment plant shall be a minimum of 85'.
For oxidation ponds meeting the conditions set out in
327.3(d) (.003d)d) of this title, the suspended solids level
may be adjusted to 90 mg/1 TSS, the level achievable with
best waste stabilization pond technology.
(b) The department's experience enforcing a secondary
treatment requirement for wastewater treatment plants has
demonstrated that a higher quality of effluent, i.e. 20 mg/1 of
BOD and TSS, can be expected from conventional secondary
treatment facilities
(c) The State of Texas has established a State Water
Quality Management Program and a continuing planning
process which sets forth the strategy and procedures for ac
complishing the management program's objectives. Essen-
tial elements of the program comprise basin planning and
waste load allocations by basin segments. In order to achieve
compliance with water quality standards within certain seg-
ments, it is necessary to establish effluent quality standards
for basic secondary treatment plants as well as for the "terti-
ary" treatment processes reouired to protect water quality.
327.2 (156. 18.05.002). Rationale/i )r Effluent Sets.
(a) The effluent sets in Table I are written to provide
an approach to waste treatment that accounts for the man
ner in which pollutant concentrations respond to various
treatment processes luring the treatment process, the
pollutant concentration is decreased either gradually, as the
limitation of a particular unit process is approached, or step
wise, as additional unit processes are employed. A pollutant
concentration beyond ithe capability of one unit process.
while not adequately utilizing the potential o(f the next unit
process, should not ordinarily dictate specifying a pollutant
concentration which utilizes the majority of the process
capability, avoids the diminishing return, and allows for the
normal variations in plant efficiencies due to the operational
modes and seasonal and climatic variations.
(b) When departures from the uniform sets of effluent
criteria are requested. any departure shall be fully justified
in the permit application
327.3 (156.18.05.003) Ap)plucatin ofE//luent Sets.
(a) Existing sources
(I) Effluent limitation segment. Oxygen resources:
Effluent Set I shall be used for systems other than oxidation
pond systems.
12) Water quality segment. Oxygen resources. When
a waste load allocation has been completed, the first effluent
set meeting the allocation shall be used.
(b) New sources.
(1t Effluent limitation segment and receiving
streams for which numerical criteria have not been specified.
Oxygen resources (Comparing the stream assimilative
capacity and Effluent Set I, the more stringent effluent set
shall be used.12) Water quality segment. Oxygen resources: Com-
paring the load allocation for segment and the load based on
Effluent Set I. the more stringent effluent set shall he used.
(c 1)isinfection and discharges into ccrtaln reservoirs.
Any discharge made within five miles of a reservoir or lake
covered by a private sewage facility regulation issued pur-
suant to C(hapter 2 (iof the Texas Water ('ode. or w hich serves
as a source for doniest ic drinking water, shall be governed by
Effluent Set 2 and A Five miles shall be measured in stream
miles from tihe rnIrmal conservation pool elevation Any ex-
ceptions to this secti(ol must 'he fully justified in the permit-
ting process sso as to prove that such except ton would have a
negligible impact on the water quality of the reservoir. l)isin-
fection for all discharges shall be as out lined in Effluent Set
A.
id' No change
tei The commission ;may allow the utilization of sewage
effluent for trrigation purposes when tihe applicant demon-
strates that this pract icC' will not alter the uses of the existing
groundwaters or det rinientally affect the surface waters of
the State of 'exas Each proqect will also he co((nsistent with
laws rigultting water rights in the State of Texas Project
types will fall into tihrtee (categories irrigation, intiltration-
percolation.,or ,v merland fl,, The purpos e of a project will be
to dispos e of treated effluenlt or to further enhance the
quality of theli effluent prior t o dist'charge or a combination of
the two. When land d sIposal systems will utilize lands to
which the public has acc-s for the ultimate disposal of
effluent, the iefflutient applied shall he treated toi a degree
equivalent to exist ing secondtary hevel standards When
agricultural lands ;arei to be Irrigated. primary effluent may
be utilized consistently with lenvironmellntal safeguards and
the protection of ground and sur face water. Primary treat-
ment means solids set'parati on as may e accomplished by pri
mary clarifiers, Imhff tanks., and other units designed in ac
cordance with all applicahble r-equiremients of the most recent
design criteria for sewerage systerms promulgated by the
department
Cf If discharges- of potllutants frin a point source or
group tof point sources. with the appliation o f effluent limita-
tions in accoi'rdanc'e with subsectfionlls ta and ' . would inter-
fere with the attainment,i orf ma;intenaniice of water quality of a
stream which assures protection d of public water supplies,
agricultural and indtstrialt uses and the protect ion and pro-
pagation of ta halanc ied populiati on of shellfish, fish, and
wildlife. and allow recreat ional act it ies in anrid on the water.
the coniuiission in individual perntit s or th board by rule
may establish effliuent limiCitations for such point source or
sources which can reaso;inah lCe expected tt n ribute to the
attainment fir nI;1itenance of such water quality
327.4 5(/5iI,4I0501o/ 'Ta bhl' 1. ,//lu,nt .'itundards for
Dome stbu t ''U ,tr TCrntn','tuo Il . ans Tbhs table contains
the sets of 'effluent tcriterlIa for waste discharge permits.
(Editor's note See table, page 196)
Issued in Austin. Texas. (on .Janua ry 9, 1980.
Doc. No 800208 Bruce Bigelow
General Counsel
Texas Department of Water Resources
Effective Date January 31. 1980
Proposal Publication Date September 4. 1979
For further information, please call (512) 475-6658;Volume' 5, Numbr .. .htnur r' 1 . 1 9.O
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Texas. Secretary of State. Texas Register, Volume 5, Number 5, Pages 163-206, January 18, 1980, periodical, January 18, 1980; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth244557/m1/33/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.