Current through Register Vol. 50, No. 9, September 20, 2024
A. Facility
Complexity Designation
1. Determine the
specific industrial category applicable to the facility.
2. From the permit application, determine SIC
codes. Also determine processes and products reported. Compare this information
to LAC 33:IX.1319 to determine the applicable industrial category and the
related complexity designation. When more than one category applies, select the
one with the highest complexity designation. Record the SIC code applicable to
the category selected in the first SIC code blank and all other reported SIC
codes in the second blank. Record the SIC title.
3. Check the applicable complexity
designation and record the associated points in the complexity points blank.
NOTE: Any industrial category not listed in LAC 33:IX.1319
is automatically assigned a Complexity Designation I except under the
circumstances noted in LAC 33:IX.1309.L.2.
4. The SIC codes listed in the tables are not
exhaustive and any questions concerning the appropriate SIC code or complexity
designation for a particular facility will be decided by the administrative
authority.
B. Flow
Volume and Type
1. Determine the wastewater
type and average discharge volume.
2. Review the permit application to determine
the composition of the wastewater discharge(s). If there are multiple
discharges, the composite of all discharges should be used. Compare the
relative magnitudes of process wastewater, noncontact cooling water and other
wastewaters with the definitions of wastewater types in Table 1 below, and
select the appropriate wastewater type (select only one type).
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Table 1 Types of Wastewater
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Wastewaters are divided into three types based on
their relative pollution potential.
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Type I
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Type I wastewaters are relatively uncontaminated.
They include noncontact cooling water only, or mixed flows which contain at
least 90 percent noncontact cooling water and not more than 1 mgd of process
wastewaters.
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Type II
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Type II wastewaters are the most contaminated.
They include process wastewater flows or any mixed wastewaters containing more
than 10 percent process wastewaters or containing more than 1 mgd of process
wastewaters.
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Type III
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Type III wastewaters include sanitary wastewater,
boiler blowdown, recirculating cooling system blowdown, water treatment
wastewaters and relatively uncontaminated surface run-off (contaminated surface
runoff should be considered process wastewater). Any mixture of these
wastewaters is considered Type III. A mixture which includes noncontact cooling
water is also Type III unless the noncontact cooling water exceeds 90 percent
of the flow (Type I).
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3.
Determine the total daily average wastewater discharge to the receiving water
based upon the information supplied to the department in the permit
application. If there are multiple discharges, the total of all daily average
discharges should be used. Under the selected wastewater type, where
applicable, answer yes or no and complete the formula.
C. Traditional Pollutants
1. Review the permit to determine if BOD,
COD, TSS and/or ammonia are limited. Points should only be assigned for these
four parameters if they are limited in the permit. The permit limits used to
determine pollutant loads should be those limits currently in effect. Add the
daily average load limit for each parameter for all discharges.
2. Check the applicable load range for BOD
and/or COD and record the highest associated points in the BOD or COD points
blank. In some cases, oxygen demand may be limited by some parameter other than
BOD or COD [i.e., ultimate oxygen demand (UOD), total organic carbon (TOC), or
total oxygen demand (TOD)]. If this is the case, check the applicable load
range in the BOD criterion and record the alternate parameter used in the blank
indicated.
3. Check the applicable
TSS and ammonia load ranges and record the associated points. An alternate
nitrogen load parameter may be used in some cases when ammonia is not limited.
If another nitrogen parameter is limited in the permit, check the appropriate
load range in the ammonia criterion and record the alternate parameter used in
the blank indicated.
4. Sum the
totals A, B, and C and record the total pollution points in the space
provided.
D. Potential
Public Health Points
1. Determine if the
receiving water is used for a municipal water supply.
2. Review the complexity designation assigned
in LAC 33:IX.1311.A. If groups I or II were assigned, check the first
complexity designation blank, record 0 points in the public health points blank
and go to the next instruction.
3.
If a higher complexity designation (III, IV, V, or VI) was assigned, then a
determination if the receiving water is used as a drinking water supply source
must be made. To qualify for points under this criterion, either the receiving
water to which wastewater is discharged or a water body to which the receiving
water is tributary must be used as a drinking water supply source within 50
miles downstream.
4. Check the
appropriate complexity designation blank and record associated points in the
public health points blank.
E. Major/Minor Facility Designation
1. Determine if the facility has been
designated a major facility by the administrative authority. If the answer is
YES, then check the appropriate blank and assign 25 points. If the answer is
NO, then proceed to the next part.
2. Determine if the permitted effluent
limitations assigned were based on water quality factors in the receiving
water. Check the appropriate answer and assign the points required.
F. Total Rating Points. Sum the
rating points assigned to each of the six sections and record the total in the
total rating points blank.
AUTHORITY NOTE:
Promulgated in accordance with
R.S.
30:2001 et seq., and in particular Section
2014(B)
