TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE C: WATER POLLUTION
CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY
PART 364
PROCEDURES AND REQUIREMENTS FOR
DETERMINING CONSTRUCTION GRANT
PRIORITIES FOR MUNICIPAL SEWAGE
TREATMENT WORKS NEEDS
SUBPART A: INTRODUCTION
Section
364.101 Purpose
364.102 Definitions
364.103 Priority System and Project Priority List
364.104 Reserves
364.105 Pre-applications and Priority Scoring Summaries
364.106 Applicant Progress
SUBPART B: PROCEDURE FOR CALCULATING THE
MUNICIPAL DISCHARGE INDEX
Section
364.201 Formula for the Municipal Discharge Index
364.202 Existing Wastewater Load
364.203 F1 Factor
364.204 F2 Factor
364.205 F3 Factor
364.206 F6 Factor
364.207 Classification of Aquatic Environments
SUBPART C: PROCEDURE FOR CALCULATING THE
SEGMENT RANKING INDEX
Section
364.301 Formula for the Segment Ranking Index
364.302 WQI Factor
364.303 Population Factor
364.304 High Quality Waters Factor
364.305 National Priorities Factor
SUBPART D: PROCEDURE FOR CALCULATING
THE GRANT PRIORITY INDEX
Section
364.401 Formula for the Grant Priority Index
364.402 F4 Factor
364.403 F5 Factor
364.404 Scoring Conventions
364.405 Additional Considerations
AUTHORITY: Implementing and authorized by Section 4 of the Anti-Pollution
Bond Act (Ill. Rev. Stat. 1983, ch. 127, par. 454) and Section 4 of the
Environmental Protection Act (Ill. Rev. Stat. 1983, ch. 111 1/2, par.
1004).
SOURCE: Adopted at 8 Ill. Reg. 9069, effective July 1, 1984.
SUBPART A: INTRODUCTION
<BSection 364.101 Purpose>>
This Part sets forth the procedures and requirements established by the
Illinois Environmental Protection Agency (IEPA) for determining priorities
in awarding grant assistance for the construction of municipal wastewater
treatment works under the Anti-Pollution Bond Act (Ill. Rev. Stat. 1983,
ch. 127, pars. 451 et seq.) and Title II of the Federal Clean Water Act (33
U.S.C. 1281 et seq.).
<BSection 364.102 Definitions>>
a) Unless specified otherwise, all terms shall have the meanings set
forth in the Environmental Protection Act (Ill. Rev. Stat. 1983,
ch. 111 1/2, pars. 1001 et seq.) the Federal Clean Water Act (33
U.S.C. 1281 et seq.) and regulations adopted under those Acts (35
Ill. Adm. Code 101 et seq.; 40 CFR 1 et seq.). Federal
regulations referenced in this Part will be applicable as of the
effective date of this Part.
b) For purposes of these rules, the following definitions apply:
"Bond Act" means the State Anti-Pollution Bond Act (Ill. Rev.
Stat. 1983, ch. 127, pars. 451 et seq.).
"PE BOD" is a term used to evaluate the impact of industrial
or other waste on a treatment works or streams in terms of
five day biochemical oxygen demand. One PE BOD equals 0.17
pounds (77g).
"Priority system" means a methodology used to rank projects
for inclusion on the project priority list.
"Project priority list" means an ordered listing of projects
which IEPA expects will receive financial assistance under
the Bond Act or Title II.
"Segment" is a portion of a river basin the surface waters of
which have common hydrologic characteristics or flow
regulation patterns, common natural physical chemical and
biological processes, and which have common reactions to
external stresses, such as the discharge of pollutants.
"Title II" means Title II of the federal Clean Water Act (33
U.S.C. 1281 et seq.).
<BSection 364.103 Priority System and Project Priority List>>
a) Financial assistance may be awarded under the Bond Act or Title II
only to projects which are identified on the project priority list
developed by IEPA.
b) This Part sets forth a priority system to be used to rank projects
for inclusions on the project priority list. In general, under
this priority system the rank of a project is determined by the
Grant Priority Index (GPI) as calculated under Subpart D, and the
date of submission of the pre-application and project scoring
summary.
c) The project priority list, or amendments thereto, shall be
published annually in the preliminary Water Pollution Control
Program Plan developed in accordance with Section 106 of the
federal Clean Water Act (33 U.S.C. 1256). IEPA shall evaluate and
consider any public comments received concerning the project
priority list. The project priority list shall be published in
the final Water Pollution Control Program Plan.
<BSection 364.104 Reserves>>
a) IEPA shall establish from the allotment of funds available under
Title II those reserves under Title II.
b) No grant or combination of grants will be certified in an amount
which will allow a single applicant or a service area of a single
applicant to receive more than 50 percent of the available Federal
and State grant funds, unless such an award or combination of
awards is deemed by the Director of the IEPA to be necessary to
assure that the State of Illinois does not lose portions of its
allotment under Title II.
<BSection 364.105 Pre-applications and Priority Scoring Summaries>>
a) A municipality may submit a pre-application and a priority scoring
summary at any time. The pre-application must identify the scope
of the project, and include a cost estimate and schedule for
completion of the project. The priority scoring summary must
include data to allow calculation of the Grant Priority Index in
accordance with the requirements of this Part.
b) A municipality is not required to renew a pre-application or a
priority scoring summary unless the scope, schedule, scoring data
or grant request differs from that of the previous year, and
unless the municipality has not yet advised IEPA of the changes.
<BSection 364.106 Applicant Progress>>
a) IEPA may delete any project from the project priority list if the
applicant fails to make efforts to initiate and complete as
expeditiously as possible all necessary actions appropriate to the
specific grant step for which the discharger is then eligible.
b) Any applicant removed from the project prioirty list is not
eligible to receive grant assistance under Title II or the Bond
Act, unless reinstated on the list in accordance with subsection
(c).
c) An applicant requesting to be reinstated shall submit a new
pre-application and priority scoring summary. The Manager of the
Division of Water Pollution Control may reinstate projects deleted
from the list at the previously held rank or at a lower rank, if
the priority scoring summary so indicates, only after evaluating
all facts and circumstances bearing upon the reasonableness of the
request including, but not limited to, the environmental effects
and cost-effectiveness of achieving water quality goals.
d) An applicant who is not reinstated under subsection (c) may
request the Director to review the decision, but must do so by
submitting a written request setting forth the grounds for
reinstatement within 30 days after receiving notice of the
decision of the Manager of the Division of Water Pollution
Control. The Director will make the final decision determining
the merits of the request in accordance with the requirements of
this Section.
SUBPART B: PROCEDURE FOR CALCULATING THE
MUNICIPAL DISCHARGE INDEX
<BSection 364.201 Formula for the Municipal Discharge Index>>
a) The Municipal Discharge Index (MDI) is a number which is the
product of four factors. The MDI is, in turn, a factor used to
calculate the Grant Priority Index.
b) The MDI is calculated as follows:
MDI - F1 x F2 x F6.
<BSection 364.202 Existing Wastewater Load>>
Where the applicant justifies hydraulic and organic loadings on the basis
of influent sampling and flow measurement results for a current 12 month
period, these values will be used. In cases where influent sampling and/or
flow measurement results are not available for a current 12 month period,
and where the applicant justifies estimated connected domestic population
equivalent and provides (measured) industrial population equivalent and/or
where the applicant provides estimated flow based on 100 gpcpd and provides
(measured) industrial flow, these values will be used.
<BSection 364.203 F1 Factor>>
F1 is a factor which evaluates the quantity of wastewater adjusted for
strength. It is calculated as follows:
F1 = log (PE BOD, existing wastewater load)
<BSection 364.204 F2 Factor>>
F2 is a factor which evaluates the adequacy of existing facilities for
treating the existing wastewater load to design levels. It is calculated
as follows:
F2 = <PPE BOD, (existing wastewater load, industrial and domestic)>>
PE BOD, existing design capacity
x <Pdaily average flow, existing load >> +1
daily average flow, existing design capacity
<BSection 364.205 F3 Factor>>
F3 is a factor which evaluates the stream segment receiving the discharge.
The evaluation is done through use of a Segment Ranking Index (SRI). The
SRI is calculated in accordance with Subpart C. F3 is calculated as
follows:
F3 = <PSRI, receiving segment >>
SRI, highest statewide value
<BSection 364.206 F6 Factor>>
a) F6 is a factor used to evaluate the environmental impact of a
discharge. The F6 factor is evaluated at the time of the
submittal of the pre-application and priority scoring summary and
is re-evaluated upon Agency approval of the facilities plan. At
the time of submittal of the pre-application an F6 of 1.0 is
assigned. After facilities planning has been approved F6 will be
evaluated in accordance with subsection (b).
b)
1) If the applicant has an existing sewage collection system and
a central sewage treatment plant an F6 of 1.0 is assigned.
2) For flood control projects or storm sewers an F6 value of 0.1
will be assigned.
3) In cases where a sewage treatment plant is proposed to
provide treatment for a currently unsewered community, an
interceptor sewer(s) is proposed to provide service to an
unsewered area or community, a complete new collection system
is proposed for a currently unsewered community or extension
of an existing collection system is proposed, an F6 will be
assigned based on the summation of the following, except that
F6 will not be greater than 1.0. If information is not
available to score items (C), (D), and (E), they will be set
equal to zero.
A) If after completion and approval of the facilities plan,
no points are assigned based on (B), (C), (D), (E) and
(F) below, F6 shall be 0.
B) One or more discharges which are not complying with an
effluent standard of 30 mg/1 BOD and 30 mg/1 suspended
solids shall result in the addition of 0.1 point.
C) If the aquatic environment in the receiving stream is
polluted, as defined in Section 164.207, downstream of
the applicant's discharge(s) from drainage tiles serving
the community 0.1 point shall be added for each full 600
feet of stream degraded to a polluted environment as a
result of the applicant's activities.
D) If the aquatic environment in the receiving stream is
semi-polluted, as defined in Section 164.207, downstream
of the applicant's discharge(s) from drainage tiles
serving the community 0.075 point shall be added for
each 600 feet of stream degraded as a result of said
discharge(s) to a semi-polluted environment as a result
of the applicant's activities.
E) If the aquatic environment in the receiving stream is
unbalanced, as defined in Section 164.207, downstream of
the applicant's discharge(s) from drainage tiles serving
the community 0.05 point shall be added for each 600
feet of stream degraded as a result of said discharge(s)
to an unbalanced environment as a result of the
applicant's activities.
F) Points from 0.0 to 1.0 shall be given for health hazards
in the municipality resulting from malfunctioning or
inadequate private sewage disposal systems. Assignment
of points shall be based upon:
i) Severity and overall distribution of the health
hazard based on the content of the facilities plan
and field investigations of IEPA in cooperation
with the Illinois Department of Public Health; and
ii) The legal, financial, institutional and managerial
capability of the applicant to implement the
facility plan.
c) Points will be assigned under subsection (b) by the Manager of the
Division of Water Pollution Control. Applicants will be notified
in writing of the points assigned. An applicant who objects to
the points assigned under subsection (b), may request the Director
to review the decision, but must do so by submitting a written
request setting forth the grounds for objection within 30 days of
the date the applicant received notice of the decision of the
Manager of Water Pollution Control. The Director of the Agency
will make the final decision determining the merits of the request
in accordance with the requirements of this Section.
<BSection 364.207 Classification of Aquatic Environments>>
Aquatic environments are classified according to the following:
a) Balanced environment: Intolerant organisms are many in number and
species, or more in numbers than other forms present.
Intolerant Moderate, facultative and
present tolerant usually present
greater than 50% lesser than 50%
b) Unbalanced environment: Intolerant organisms are less in number
than other forms combined, but combined with moderate forms, they
usually outnumber tolerant forms.
Intolerant Moderate, facultative and
present tolerant usually
lesser than 50% present but
but greater than 10% greater than 50%
c) Semi-polluted environment: Intolerant organisms are few or may
not be present. Moderate and/or facultative organisms present.
Intolerant Moderate, faculative and
present tolerant usually
greater than 10% present greater than 90%
d) Polluted environment:
1) Intolerant organisms absent, only tolerant organisms present
or no organisms present.
Tolerant present = 100%
2) Organisms which are not adapted to inhabit a polluted
environment are occasionally collected as a result of factors
produced by the drift and are not representative.
SUBPART C: PROCEDURE FOR CALCULATING THE
SEGMENT RANKING INDEX
<BSection 364.301 Formula for the Segment Ranking Index>>
a) The Segment Ranking Index (SRI) is an objective determination of
the priority of segments through the use of four factors which are
expressed as numerical factors and combined to establish a ranking
index for each of the basin segments.
b) The SRI is calculated as follows
SRI = Water Quality Index (WQI) x High Quality Water Factor x
Population Factor x National Priorities Factor
<BSection 364.302 WQI Factor>>
a) The WQI factor is determined by comparing the measured value of
certain critical water quality parameters in the waters of the
State with Illinois Pollution Control Board water quality
standards for those parameters.
b) The procedure for calculating the WQI factor is as follows:
1) Average the 1974 and 1975 sample data for each water quality
station for each of the following parameters: dissolved
oxygen, fecal coliform bacteria, ammonia nitrogen, total
dissolved solids, and nitrate plus nitrite nitrogen.
2) Determine the percentage of 1974 and 1975 samples which
indicated violations of applicable water quality standards
for dissolved oxygen, ammonia nitrogen, fecal coliform
bacteria, total dissolved solids, and pH as then set forth in
Chapter 3 of the Board's regulations.
3) The parameter pH (relative acidity) is not considered in
(b)(1) because its nature is such that an "average" pH is
generally meaningless as an expression of water quality.
Nitrate plus nitrite nitrogen is not considered in (b)(2)
because there is no numerical standard which applies for most
water quality sampling stations.
4) The 10 sets of parameter values for each station of all
stream segments are then arranged in order of severity and
given a rank number. These numbers are subsequently combined
to complete a water quality index for each station, according
to the following formula:
S = 1/2 (RA + RV) AMM + 1/2 (RA + RV) Fec Col + 1/2 (RA + RV)
DO
+ 1/2 (RA + RV)TDS + RVpH + RAN+N
where:
S = "Water Quality Index" value for a given station
RA = rank number by average value for a given station
and parameter
RV = rank number by percent violations of water quality
standards for a given station and parameter
Amm, DO, Fec Col, TDS, pH, N + N = parameter designation
subscripts
5) The S values found for each station are used as a basis for
determining a water quality index value for the basin
segments. This process requires the averaging of SSta values
for each segment according to the following formula:
WQI = (S + S + S + . . . + S N)/N
Where WQI = segment water quality index value =
average of station S values for the
segment, and
N = Number of stations in the segment
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<BSection 364.303 Population Factor>>
a) Under this factor, populations are computed for each segment and
converted into an adjustment factor. The population of a segment
is defined by the 1980 U.S. census population of the segment
except where inter-segment transfers of sewage occur, in which
case the estimated population whose sewage is tributary to the
segment is added to the resident population of the segment.
Population figures of the incorporated and unincorporated
communities are recorded for each segment. Where a segment
boundary splits a township, the unincorporated population within
the segment is prorated by applying a percentage of the township
population equal to the ratio of the segment area in the township
to the total township area. The populations of the various
political subdivisions within each segment are totaled.
b) The following population factors are applied as multipliers to the
water quality index values:
Segment Population Population Factor
0 - 20,000 1.00
20,001 - 50,000 1.05
50,001 - 100,000 1.10
OVER 100,000 1.20
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<BSection 364.304 High Quality Waters Factor>>
a) Certain segments, such as segments containing a major lake or
impoundment, have been identified as having high-quality waters
where special management and waste control procedures may be
needed for their preservation.
b) It is recognized that certain free-flowing stream reaches also
have high water quality; however, these are not identified as
needing special preservation techniques due to the stringency of
the state's effluent standards. Lakes and impoundments do require
special attention because the effluent standards may not be
sufficient to prevent degradation of water quality in standing
bodies of water. The segments selected under this criterion are
assigned a "high quality water factor" of 1.20. Segments
immediately tributary to these segments are given a factor of
1.10. All other segments are given a factor of 1.00.
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<BSection 364.305 National Priorities Factor>>
Segments in the Lake Michigan basin, the Chicago metropolitan area and the
East St. Louis metropolitan area have been designated by the United States
Environmental Protection Agency as having high national priority. They are
therefore assigned a "national priorities factor" of 1.05. All other
segments are given a factor of 1.00.
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SUBPART D: PROCEDURE FOR CALCULATING
THE GRANT PRIORITY INDEX
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<BSection 364.401 Formula for the Grant Priority Index>>
a) The Grant Priority Index (GPI) is a number which is the product of
three factors. The GPI is used to determine rank on the project
priority list in accordance with Section 364.103.
b) The GPI is calculated as follows:
GPI = MDI x F4 + F5
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<BSection 364.402 F4 Factor>>
a) The F4 factor considers the corrective measures necessary to
provide the degree of treatment required by applicable effluent
limitations. F4 is derived through a summation of values assigned
for additional treatment process required for currently overloaded
facilities and for rehabilitation.
b) The F4 factor establishes relative values for the following
treatment processes:
1) addition of any required secondary or supplemental treatment
processes where, at the present time, the required processes
are non-existent.
2) addition of capacity for currently (hydraulically and/or
organically) overloaded treatment processes.
3) modification of existing processes which do not increase
capacity or degree of treatment but are necessary for the
upgrading of an existing treatment plant.
4) the construction of new trunk and lateral sewers to provide
an extension of service from an existing collection system or
the rehabilitation of existing sewers, which will not
eliminate excessive infiltration/inflow.
5) the construction of a new collection system and treatment
works to service a presently unsewered community where a
discharge of raw or partially treated sewage exists, or where
no discharge exists.
c) The F4 values are the following:
TABLE OF F4 VALUES
Average Maximum Maximum
Dry Dry Wet
Treatment Weather Weather Weather
Process Flow Flow Flow
Primary 0 0 8
Secondary 14 10 0
Tertiary (10/12) 8 6 0
Disinfection 6 6 6
Phosphorus Removal 5 3 0
Nitrification 8 6 0
Inadequate Sludge Processing Facilities 6
Modification of existing processes which
do not increase capacity or degree of
treatment 1
or
Wastewater reuse or recycling; Flood
Control Projects; Trunk and Laterial
Sewers 1
Range of Values: 0 to 99
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<BSection 364.403 F5 Factor>>
a) F5 is a factor which is added for those projects whose priority
position is to be retained.
b) The value of F5 will be retained only if the value of the
quanitity F1 x F2 x F3 x F6 x F4 is greater than the corresponding
quantity for the lowest priority need which has an F5 value
greater than zero. If the value of this quantity does not meet
this test, F5 for the need will be reduced to zero following the
completion of facility planning and subsequent determination of
F6.
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<BSection 364.404 Scoring Conventions>>
a) The priority system established in this Part is applied with the
following conventions and general results.
b) For expansion and/or upgrading of an existing sewage treatment
plant, a new sewage treatment plant to serve a currently sewered
area, or sewer rehabilitation work which will eliminate excessive
infiltration/inflow, the MDI value for the plant, together with
the F4 value for the treatment processes affected at the plant are
used to calculate the GPI value for the need. For sewer
rehabilitation projects "treatment processes affected at the
plant" are as follows:
1) Where the sewer rehabilitation work will solve an inflow
problem, the F4 value shall be determined from the existing
need for provision of complying primary treatment and/or
disinfection for wet weather flow in excess of maximum dry
weather flow, unless additional treatment is required to meet
effluent standards.
2) Where the sewer rehabilitation work will solve an
infiltration problem, the F4 value shall be determined from
the existing need for provision of complying primary and/or
secondary and/or tertiary and/or advanced and/or supplemental
treatment of dry weather flow.
3) Where the sewer rehabilitation work will solve an
infiltration and inflow problem, the F4 value shall be
determined from the existing need for provision of complying
primary and/or secondary and/or tertiary and/or advanced
and/or supplemental treatment of dry weather flow as well as
the existing need for provision of primary and/or
disinfection of wet weather flow in excess of maximum dry
weather flow, unless additional treatment of the excess flow
is required to meet effluent standards.
4) Under (b)(1)-(3), existing need is determined using
overload/no overload criteria for existing treatment
processes and dilution ratio for additional processes
required by effluent standards.
c) For construction of a new sewage treatment plant or improvements
to existing individual sewage disposal units or a combination of
the two for a currently unsewered community, since a quantifiable
discharge does not exist, an "equivalent" MDI value must be
calculated. For this purpose, the estimated current population
equivalent of the area to be served is used in calculating F1; F2
is set equal to 1.0; and the segment to receive the proposed
discharge determines F3. A significance factor to reflect the
impact of the dicharge on the receiving stream and public health
hazards is determined as described in Section 364.206 to calculate
F6. The MDI is then calculated. The treatment processes required
at the proposed sewage treatment plant determine F4. The GPI is
then calculated.
d) For construction of a new regional plant or expansion and/or
upgrading of an existing sewage treatment plant to phase out one
or more existing sewage treatment plants, the highest of the MDI
values as sell as the highest of the F4 values among the values
for the existing or proposed regional plant and the values for the
existing plant(s) to be phased out (exclusive of non-municipally
owned treatment works) are used to calculate the GPI for the
regional plant.
e) For construction of a new sewage treatment plant or improvements
to individual existing sewage disposal units or a combination of
the two for a currently unsewered community where a discharge of
raw or partially treated sewage does exist. A "discharge of raw
or partially treated sewage" exists, for purposes of determining
priority, if the applicant establishes that the PE (BOD) of the
discharge from the sewer system is at least equal to 65 percent of
the total domestic population plus 100 percent of any tributary
industrial PE BOD, on the basis of no less than three samples (24
hour composite) of the discharge, collected directly from the
"sewer system" outfall to the receiving stream and from comparable
flow measurements of the discharge, on different days. Copies of
laboratory reports must be submitted as a part of the facilities
planning documents to permit a need to qualify under these
criteria, and an on-site investigation by Agency representatives
may be made, in which case the results of the Agency investigation
will be considered conclusive for scoring purposes. Since an MDI
value does not exist, an "equivalent" MDI must be calculated. For
this purpose, estimated current population equivalent of the area
to be served is used in calculating F1; F2 is set equal to 2.0;
and the segment to receive the proposed discharge determines F3.
A significance factor to reflect the impact of the discharge on
the receiving stream and public health hazards is determined as
described in Section 365.206 to calculate F6. The MDI is then
calculated. The treatment processes required at the proposed
treatment plant determine F4. The GPI is then calculated.
f) For relief intercepting sewers, where the existing intercepting
sewer is not capable of transporting the flows which are presently
tributary to it, proceed in accordance with Section 364.404(b)
where the relief intercepting sewer is a sanitary sewer and in
accordance with Section 364.404(j) where the relief sewer is a
combined sewer.
g) For transport of sewage from end point(s) of existing collection
system(s) to an existing or proposed regional sewage treatment
plant proceed in accordance with Section 364.404(d).
h) For transport of sewage from end point(s) of proposed collection
system(s) to an existing or proposed regional treatment plant or
improvements to individual existing sewage disposal units or both,
the calculation of the F1, F2 and F6 values proceeds similarly to
that in Section 364.404(c) above. The F4 value will be selected
from the larger of the values for the degree(s) of treatment which
would be required at the local location of the collection system
and at the regional plant. The F3 value will also be selected
from the larger of the values for the basin segment containing the
collection system and the basin segment containing the regional
plant.
i) For construction of an intercepting sewer or improvements to
existing individual sewage disposal units or both for a currently
unsewered community where a discharge of raw or partially treated
sewage does exist, an MDI value does not exist, and an
"equivalent" MDI must be calculated. For this purpose, estimated
current population equivalent of the area to be served is used in
calculating F1; F2 is set equal to 1.0; and the segment to receive
the proposed discharge determines F3. The MDI is then calculated.
The treatment processes required at the proposed sewage treatment
plant determine F4. The immediate impace of the discharge on the
receiving stream and public health hazard are used as described in
Section 364.206 to calculate F6. The GPI is then calculated.
j) For elimination or treatment of on-system wet weather overflow(s)
from combined sewers, regardless of the approach to solving this
problem or the extensiveness of the problem, the MDI for the plant
currently providing service, and an F4 value of 14 (established
values for primary treatment and disinfection of maximum wet
weather flow) are used in the calculation of a GPI value.
k) For construction of trunk and lateral sewers where rehabilitation
work not eliminate excessive infiltration/inflow, the MDI value
for the plant, together with F4 and F6 values of 1, are used to
determined the GPI value; therefore, GPI = MDI.
l) For construction of a complete new collection system, the GPI
value will be equal to that of the proposed plant under Section
364.404(c) or intercepting sewer under Section 364.404(g).
m) For extension of service by an existing collection system, the
calculation of the MDI value proceeds similarly to that in Section
364.404(d) except that in this case estimate of the existing
population equivalent to be served by the sanitary sewer extension
only is used in determining F1. The F4 values for this case are
equal to 1, the F6 is calculated in accordance with Section
364.206. The GPI is then calculated.
n) For construction of an intercepting sewer parallel to an existing
intercepting sewer, which existing sewer is capable of
transporting the flows which are presently tributary to it; flood
control projects; and wastewater recycling or wastewater reuse
projects, the MDI value for the plant, together with an F4 value
of 1 are used to determine the GPI value, therefore, GPI = MDI.
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<BSection 364.405 Additional Considerations>>
a) Effects of Overloading
1) For an overloaded facility, values from the table of F4
values for the average and maximum design flow for existing
treatment processes will be assigned to the need.
2) For a facility which is not overloaded as defined above, but
where sludge handling capacity is presently inadequate, 6
points for sludge handling facilities will be assigned to the
need. Sludge handling will be determined to be inadequate
where the connected population equivalent (for a 12 month
period) exceeds the Agency approved and permitted design
basis of the sludge handling units.
3) If the facility is not overloaded based on the average daily
flow, the need may receive credit for overloading on the
maximum dry weather flow. Where the applicant justifies, on
the basis of influent flow measurement for a 12 month period
that the average of the peak dry weather flows to the plant
exceeds the design peak capacity of the plant for complete
treatment of dry weather flow, the need will receive credit
for overloading under maximum dry weather flow conditions.
b) Ongoing Construction
1) At the time of scoring of a need for priority, in situations
where other construction has been completed for expansion of
capacity and/or increased degree of treatment, the priority
score will not include the need for the processes which have
been constructed.
2) Needs which consist of plant improvements and/or intercepting
sewers, and which will be satisfied through construction in
several phases (projects), will be addressed by scoring all
phases (projects) with the full credit for the entire need.
c) Flow Diversion
Needs which will result in the diversion of a portion of the
average dry weather flow from one plant to another plant will be
scored utilizing the regionalization convention for the two
plants.
d) Integrally Related Projects
1) Two or more needs of one or more applicants, which are
initially ranked at different priorities, may be consolidated
into one need at the higher (highest) priority, if the
following conditions are satisfied:
A) The facilities plan, must conclude that the two or more
needs are integrally related through the cost-effective
solution; and
B) State and Federal funds must be available to permit
complete funding of the consolidated need.
2) Such consolidations may include:
A) sewer rehabilitation work and sewage treatment plant
improvements and/or intercepting sewer construction;
B) projects to eliminate on-system wet weather overflow and
sewage treatment plant improvements and/or intercepting
sewer construction;
C) projects to construct collection systems and new sewage
treatment plant and/or intercepting sewer construction.
3) This provision does allow the award of grants (for projects
which are integrally related to a priority project), to
municipalities which had not filed an application for grant
at the time of preparation of the priority list for the
fiscal year.
e) Complete Waste Treatment Systems
After Agency approval of a facilities plan, and at the time of the
subsequent revision to the priority list, the Agency shall add any
previously unidentified needs to the priority list if the needs
are not included in the scope of work for which a grant has been
offered, even if the applicant has not filed an application for
such needs. Failure of the applicant to file application for such
previously identified needs shall not restrict the Agency in
adding the needs to the priority list.
@R