MEMORANDUM
TO:
2006
Effluent
Guidelines
Program
Plan
Docket,
EPA
Docket
Number
OW­
2004­
032
FROM:
Meghan
Kandle,
ERG
DATE:
9
August
2005
SUBJECT:
Point
Source
Category
Rankings
by
Nitrogen
and
Phosphorus
Loads
Calculated
using
2002
PCS
Data
INTRODUCTION
As
part
of
the
2006
Effluent
Guidelines
Planning
Process,
EPA
plans
to
investigate
wastewater
discharges
of
nutrients.
The
first
step
in
this
process
is
a
screening­
level
analysis
of
nitrogen
and
phosphorus
discharges
from
existing
point
source
categories.
This
memorandum
describes
the
methodology
ERG
used
to
calculate
nitrogen
and
phosphorus
loads
using
2002
Permit
Compliance
System
(
PCS)
data
and
rank
point
source
categories
in
terms
of
total
nitrogen
and
total
phosphorus
loads.

2002
PCS
DATA
ERG
used
annual
loads
of
nitrogen
and
phosphorus
compounds
from
PCSLoads2002
for
this
screening­
level
analysis.
EPA's
2005
Screening­
Level
Analysis
Report
describes
the
development
of
PCSLoads2002
in
more
detail
[
1].
PCSLoads2002
uses
2002
PCS
data
and
EPA's
Effluent
Data
Statistics
(
EDS)
system
to
estimate
annual
pollutant
loads.
These
data
sources
are
described
below:

°
PCS
is
a
mainframe
database
created
by
EPA
to
track
permit,
compliance,
and
enforcement
status
of
facilities
regulated
by
the
National
Pollutant
Discharge
Elimination
System
(
NPDES)
program
under
the
Clean
Water
Act.
PCS
is
the
source
of
the
pollutant
discharge
data
and
facility
information
used
in
the
development
of
the
PCSLoads2002
database.

°
EDS
is
an
EPA
mainframe
computer
program
that
calculates
annual
pollutant
loads
using
monthly
measurement
data
reported
in
PCS.

Facilities
report
pollutants
to
PCS
using
parameter
codes
(
PRAM
codes).
Depending
on
the
requirements
of
a
facility's
NPDES
permit,
the
facility
may
report
concentrations
or
loads
of
Memorandum
9
August
2005
Page
2
the
same
pollutant
to
PCS
using
multiple
parameters.
To
avoid
double
counting,
EPA
groups
parameters
that
represent
the
same
pollutant.
EPA
created
the
following
parameter
groups
in
PCSLoads2002
for
nitrogen
and
phosphorus
compounds:

°
AMMON:
Includes
parameters
for
ammonia
reported
as
NH
3,
NH
4,
or
unionized
ammonia;

°
N:
Includes
parameters
for
ammonia
reported
as
N;

°
PHOSP:
Includes
parameters
for
phosphorus
(
described
below);
and
°
PO4:
Includes
parameters
for
phosphate.

The
following
example
describes
how
applying
the
parameter
grouping
hierarchy
helps
to
avoid
double­
counting
of
loads.
Six
parameters
may
be
used
to
report
phosphorus:
(
1)
total
phosphorus,
(
2)
phosphorus
in
total
orthophosphate,
(
3)
total
organic
phosphorus,
(
4)
total
recoverable
phosphorus,
(
5)
dissolved
phosphorus,
or
(
6)
total
soluble
phosphorus
as
PO
4.
Because
total
phosphorus
includes
dissolved
phosphorus
and
soluble
phosphorus,
adding
the
measurements
together
overestimates
the
mass
of
phosphorus
discharged
from
the
facility.
EPA's
grouping
hierarchy
selects
one
parameter
that
best
represents
the
total
pollutant
discharge
and
assigns
it
to
the
grouped
parameter
code
named
"
PHOSP."
Below
is
the
"
grouping"
hierarchy
EPA
used
to
assign
loads
to
the
PHOSP
parameter
code
if
a
facility
reported
multiple
parameter
codes
for
phosphorus:


The
data
for
total
phosphorus
has
precedence
over
the
data
for
phosphorus
in
total
orthophosphate;


If
total
phosphorus
is
not
reported,
the
data
for
phosphorus
in
total
orthophosphate
has
precedence
over
the
data
for
total
organic
phosphorus;


If
total
phosphorus
and
phosphorus
in
total
orthophosphate
are
not
reported,
the
data
for
total
organic
phosphorus
has
precedence
over
the
data
for
total
recoverable
phosphorus;


If
total
phosphorus,
phosphorus
in
total
orthophosphate,
and
total
organic
phosphorus
are
not
reported,
the
data
for
total
recoverable
phosphorus
has
precedence
over
the
data
for
dissolved
phosphorus;
and
Memorandum
9
August
2005
Page
3

If
total
phosphorus,
phosphorus
in
total
orthophosphate,
total
organic
phosphorus,
and
total
recoverable
phosphorus
are
not
reported
the
data
for
dissolved
phosphorus
has
precedence
over
the
data
for
soluble
phosphorus
(
as
PO
4);
and

The
data
for
soluble
phosphorus
(
as
PO
4)
are
used
to
represent
total
phosphorus
in
the
absence
of
other
phosphorus
parameters.

Attachment
1
presents
EPA's
parameter
grouping
hierarchy
for
nitrogen
and
phosphorus
compounds.

METHODOLOGY
In
addition
to
the
multiple
parameters
described
in
the
previous
section,
PCS
data
include
discharges
of
nitrogen
and
phosphorus
in
various
chemical
forms.
For
example,
nitrogen
may
be
reported
in
its
elemental
form
(
as
N),
Total
Khjeldhal
Nitrogen
(
TKN),
Organic
Nitrogen,
Ammonia
as
N,
Ammonia
as
NH
3
or
NH
4,
Unionized
Ammonia,
nitrite
or
nitrate.
EPA
developed
a
series
of
hierarchies
to
select
the
appropriate
combination
of
nitrogen
and
phosphorus
compounds
to
calculate
the
total
nitrogen
and
total
phosphorus
loads.
These
hierarchies
are
described
in
the
following
sections.

Total
Nitrogen
Load
ERG
calculated
total
nitrogen
using
one
of
the
following
equations:

°
Equation
1:
Total
N
Load
=
Total
Nitrogen
as
N;

°
Equation
2:
Total
N
Load
=
TKN
+
Nitrite
(
NO
2)
+
Nitrate
(
NO
3);
or
°
Equation
3:
Total
N
Load
=
Organic
Nitrogen
+
Ammonia
+
Nitrite
+
Nitrate.

Nitrogen
compounds
that
are
reported
as
NH
3,
NH
4,
NO
2,
or
NO
3
need
to
be
converted
to
N.
Table
1
presents
the
conversion
factors
ERG
used
for
nitrogen
compounds.
Memorandum
9
August
2005
Page
4
1If
loads
of
TKN
were
available,
ERG
used
Equation
2
to
calculate
total
nitrogen
load
even
if
loads
were
missing
for
nitrite
or
nitrate.
Table
1.
Conversion
Factors
for
Nitrogen
Compounds
Nitrogen
Compound
Conversion
Factor
Ammonia
as
NH3
or
NH4*
14
N
/
17
NH3
Nitrite
as
NO2
14
N
/
46
NO2
Nitrate
as
NO3
14
N
/
62
NO3
*
The
conversion
factor
for
ammonia
assumes
that
the
majority
of
ammonia
loads
in
PCSLoads2002
are
reported
as
NH3.

As
discussed
previously,
loads
for
some
ammonia
parameters
were
grouped
by
EPA's
grouping
hierarchy
and
assigned
to
a
grouped
parameter
code.
Using
the
following
hierarchy,
ERG
combined
these
grouped
ammonia
parameters
with
other
non­
grouped
nitrogen
parameters
to
calculate
the
total
nitrogen
load:

°
If
the
nitrogen
load
is
reported
as
Total
Nitrogen
as
N
(
PRAM
00600),
ERG
used
this
parameter
in
Equation
1.

°
If
loads
for
PRAM
00600
were
not
available,
and
loads
of
TKN
(
PRAM
00625)
were
available,
ERG
used
Equation
21.
ERG
used
the
following
PRAM
codes
for
TKN,
nitrite,
and
nitrate:


TKN
­
PRAM
00625;


Nitrite
­
If
loads
were
available
for
Nitrite
as
N
(
PRAM
00615),
ERG
used
PRAM
00615.
If
loads
were
not
available
for
00615,
ERG
used
data
for
Nitrite
as
NO
2
(
PRAM
71855)
and
converted
the
load
to
pounds
of
N.


Nitrate
­
If
loads
of
Nitrate
as
N
(
PRAM
00620)
were
available,
ERG
used
PRAM
00620.
If
loads
of
00620
were
not
available,
ERG
used
loads
for
Nitrate
as
NO
3
(
PRAM
71850)
and
converted
the
load
to
pounds
of
N.

°
If
loads
for
Total
Nitrogen
as
N
(
PRAM
00600)
and
TKN
(
PRAM
00625)
were
not
available,
and
loads
of
Organic
Nitrogen
(
PRAM
00605)
were
available,
ERG
Memorandum
9
August
2005
Page
5
2If
loads
for
organic
nitrogen
were
available,
ERG
used
Equation
3
to
calculate
total
nitrogen
load
even
if
loads
were
missing
for
ammonia,
nitrite,
or
nitrate.
used
Equation
32.
ERG
used
the
following
PRAM
codes
for
Organic
Nitrogen,
ammonia,
nitrite,
and
nitrate:


Organic
Nitrogen
­
Organic
Nitrogen
as
N
(
PRAM
00605);


Ammonia
­
If
loads
of
Ammonia
as
N
(
PRAM
N)
were
available,
ERG
used
PRAM
N.
If
loads
of
PRAM
N
were
not
available,
ERG
used
ammonia
reported
as
NH
3,
NH
4,
or
unionized
ammonia
(
PRAM
AMMON)
and
converted
the
load
to
pounds
of
N.


Nitrite
­
If
loads
were
available
for
Nitrite
as
N
(
PRAM
00615),
ERG
used
PRAM
00615.
If
loads
were
not
available
for
00615,
ERG
used
data
for
Nitrite
as
NO
2
(
PRAM
71855)
and
converted
the
load
to
pounds
of
N.


Nitrate
­
If
loads
of
Nitrate
as
N
(
PRAM
00620)
were
available,
ERG
used
PRAM
00620.
If
loads
of
00620
were
not
available,
ERG
used
loads
for
Nitrate
as
NO
3
(
PRAM
71850)
and
converted
the
load
to
pounds
of
N.

°
If
loads
for
Total
Nitrogen
as
N
(
PRAM
00600),
TKN
(
PRAM
00625),
and
Organic
Nitrogen
(
PRAM
00605)
were
not
available,
ERG
summed
any
available
loads
for
nitrite,
nitrate,
and
ammonia.
ERG
used
the
following
PRAM
codes
for
ammonia,
nitrite,
and
nitrate:


Ammonia
­
If
loads
of
Ammonia
as
N
(
PRAM
N)
were
available,
ERG
used
PRAM
N.
If
loads
of
PRAM
N
were
not
available,
ERG
used
ammonia
reported
as
NH
3,
NH
4,
or
unionized
ammonia
(
PRAM
AMMON)
and
converted
the
load
to
pounds
of
N.


Nitrite
­
If
loads
were
available
for
Nitrite
as
N
(
PRAM
00615),
ERG
used
PRAM
00615.
If
loads
were
not
available
for
00615,
ERG
used
data
for
Nitrite
as
NO
2
(
PRAM
71855)
and
converted
the
load
to
pounds
of
N.


Nitrate
­
If
loads
of
Nitrate
as
N
(
PRAM
00620)
were
available,
ERG
used
PRAM
00620.
If
loads
of
00620
were
not
available,
ERG
used
loads
for
Nitrate
as
NO
3
(
PRAM
71850)
and
converted
the
load
to
pounds
of
N.
Memorandum
9
August
2005
Page
6
Total
Phosphorus
Load
As
discussed
previously,
loads
for
phosphorus
parameters
were
grouped
by
EPA's
grouping
hierarchy
and
assigned
to
a
grouped
parameter
code.
As
a
result,
PCSLoads2002
has
only
two
parameters
for
phosphorus
compounds.
ERG
used
the
following
hierarchy
to
calculate
total
phosphorus
load:

°
If
loads
of
phosphorus
(
PRAM
PHOSP)
were
available,
ERG
used
the
PRAM
PHOSP
load
to
represent
total
phosphorus.
ERG
assumed
that
the
majority
of
the
loads
were
reported
as
P
and
did
not
apply
a
conversion
factor
to
calculate
pounds
of
P.

°
If
loads
of
phosphorus
(
PRAM
PHOSP)
were
not
available,
ERG
used
loads
of
phosphate
(
PRAM
PO4).
Assuming
that
the
majority
of
the
load
is
reported
as
PO
4,
ERG
multiplied
the
load
by
31/
95
to
convert
the
load
to
pounds
of
P.

DATA
QUALITY
SCREENING
ERG
ranked
point
source
categories
based
on
their
total
nitrogen
and
total
phosphorus
discharges
and
reviewed
the
facility
loads
for
the
top
six
categories
from
each
set
of
rankings.
If
a
single
facility
accounted
for
more
than
50
percent
of
the
nitrogen
or
phosphorus
load
for
its
point
source
category,
ERG
determined
that
the
facility
was
not
representative
of
the
rest
of
the
category
and
deleted
the
facility's
nitrogen
or
phosphorus
load.
ERG
has
not
yet
examined
the
sources
of
nitrogen
and
phosphorus
discharges
for
these
categories,
and
will
conduct
a
more
detailed
quality
check
of
the
pollutant
loads
prior
to
the
final
Plan.

Table
2
lists
the
top
facility
for
each
of
the
top
ranking
point
source
categories
for
nitrogen
discharges.
As
shown
in
Table
2,
no
facility
contributes
more
than
50
percent
of
the
total
point
source
category
nitrogen
load.
Therefore,
ERG
did
not
identify
any
facilities
for
deletion.
Attachment
2
presents
facility
rankings
for
each
point
source
category
in
Table
2.
Memorandum
9
August
2005
Page
7
Table
2.
Top
Nitrogen
Dischargers
for
the
Top
Six
Point
Source
Categories
Point
Source
Category
Top
Facility
NPDES
Permit
No.
Top
Facility
Name
Top
Facility
Location
Total
Nitrogen
Load
for
Top
Facility
(
lb/
yr)
%
of
Total
Category
Nitrogen
Load
Organic
Chemical,
Plastics,
and
Synthetic
Fibers
TX0008788
BASF
Corporation
Freeport,
TX
3,686,334
23%

Steam
Electric
Power
Generation
VA0004090
Dominion
Virginia
Power
Surry,
VA
3,554,784
29%

Pulp,
Paper,
and
Paperboard
GA0003654
Brunswick
Cellulose
Brunswick,
GA
1,352,040
16%

Meat
and
Poultry
Processing
NE0001392
Tyson
Fresh
Meats,
Inc.
Dakota
City,
NE
1,380,923
20%

Fertilizer
Manufacturing
MO0000817
River
Cement
Company
Festus,
MO
1,167,682
18%

Iron
and
Steel
Manufacturing
IN0000281
U.
S.
Steel,
LLC
Gary,
IN
2,733,058
45%

Source:
NutrientsAnalysis
[
2].

Table
3
lists
the
top
facility
for
each
of
the
top
ranking
point
source
categories
for
phosphorus
discharges.
As
shown
in
Table
3,
two
facilities
account
for
more
than
50
percent
of
their
category's
discharge.
These
loads,
which
may
be
the
result
of
a
PCS
error,
are
not
representative
of
the
rest
of
the
category.
Therefore,
ERG
deleted
the
phosphorus
load
for
these
two
facilities
and
recalculated
the
point
source
category
loads.
Attachment
3
presents
facility
rankings
for
each
point
source
category
in
Table
3.
Memorandum
9
August
2005
Page
8
Table
3.
Top
Phosphorus
Dischargers
for
the
Top
Six
Point
Source
Categories
Point
Source
Category
Top
Facility
NPDES
Permit
No.
Top
Facility
Name
Top
Facility
Location
Total
Phosphorus
Load
for
Top
Facility
(
lb/
yr)
%
of
Total
Category
Phosphorus
Load
Fertilizer
Manufacturing
MS0003115
Mississippi
Phosphates
Corp.
Pascagoula,
MS
5,798,186*
95%

Pulp,
Paper,
and
Paperboard
VA0003646
Meadwestvaco
Covington,
VA
202,413
7%

Phosphate
Manufacturing
LA0004847
IMC
Phosphates
Co.
­
Uncle
Sam
Uncle
Sam,
LA
1,671,960*
66%

Mineral
Mining
and
Processing
FL0000655
PCS
Phosphate
White
Springs,
FL
888,860
44%

Steam
Electric
Power
Generation
VA0004090
Dominion
Virginia
Power
Surry,
VA
370,939
21%

Organic
Chemicals,
Plastics,
and
Synthetic
Fibers
NJ0005100
Du
Pont
Deepwater,
NJ
275,647
27%

Source:
NutrientsAnalysis
[
2].
*
Phosphorus
loads
were
deleted
from
category
for
final
rankings.

RESULTS
Table
4
ranks
point
source
categories
in
terms
of
total
nitrogen
load.
Table
5
ranks
point
source
categories
in
terms
of
total
phosphorus
load.
The
loads
used
to
generate
the
phosphorus
rankings
do
not
include
the
two
facilities
contributing
more
than
50
percent
of
the
phosphorus
loads
for
their
category
as
discussed
previously.

Table
4.
Point
Source
Category
Rankings
by
Total
Nitrogen
Load
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Nitrogen
Loads
Total
Annual
Nitrogen
Load
(
lb/
yr)
Average
Nitrogen
Load
per
Facility
(
lb/
yr)

414
Organic
chemicals,
plastics,
and
synthetic
fibers
132
15,848,055
120,061
423
Steam
electric
power
generation
80
12,057,982
150,725
430
Pulp,
paper,
and
paperboard
87
8,264,492
94,994
Memorandum
Table
4
(
Continued)
9
August
2005
Page
9
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Nitrogen
Loads
Total
Annual
Nitrogen
Load
(
lb/
yr)
Average
Nitrogen
Load
per
Facility
(
lb/
yr)

432
Meat
and
poultry
products
43
6,867,338
159,706
418
Fertilizer
manufacturing
22
6,481,434
294,611
420
Iron
and
steel
manufacturing
49
6,134,919
125,202
436
Mineral
mining
and
processing
19
4,363,121
229,638
419
Petroleum
refining
99
3,053,278
30,841
415
Inorganic
chemicals
32
2,598,056
81,189
457
Explosives
5
2,436,574
487,315
439
Pharmaceutical
manufacturing
18
2,023,881
112,438
433
Metal
Finishing
41
995,882
24,290
424
Ferroalloy
manufacturing
1
974,265
974,265
421
Nonferrous
metals
manufacturing
16
887,069
55,442
422
Phosphate
manufacturing
10
858,949
85,895
409
Sugar
processing
15
669,432
44,629
NA
Miscellaneous
foods
and
beverages
5
640,472
128,094
NA
Vinyl
chloride
and
chlor­
alkali
12
589,624
49,135
410
Textile
mills
45
554,457
12,321
463
Plastics
molding
and
forming
6
278,299
46,383
425
Leather
tanning
and
finishing
6
256,880
42,813
455
Pesticide
chemicals
13
210,156
16,166
NA
Drinking
water
treatment
8
205,600
25,700
429
Timber
products
processing
3
161,434
53,811
407
Canned
and
preserved
fruits
and
vegetables
processing
12
156,923
13,077
471
Nonferrous
metals
forming
and
metal
powders
8
155,147
19,393
412
Concentrated
animal
feeding
operations
1
141,960
141,960
408
Canned
and
preserved
seafood
processing
3
117,495
39,165
Memorandum
Table
4
(
Continued)
9
August
2005
Page
10
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Nitrogen
Loads
Total
Annual
Nitrogen
Load
(
lb/
yr)
Average
Nitrogen
Load
per
Facility
(
lb/
yr)

428
Rubber
manufacturing
9
109,368
12,152
451
Concentrated
aquatic
animal
production
4
72,289
18,072
444
Waste
combustors
(
commercial
incinerators
combusting
hazardous
waste)
8
58,759
7,345
445
Landfills
8
58,759
7,345
NA
Airport
deicing
1
57,376
57,376
469
Electrical
and
electronic
components
3
50,482
16,827
413
Electroplating
17
43,876
2,581
440
Ore
mining
and
dressing
10
40,392
4,039
406
Grain
mills
manufacturing
7
31,307
4,472
464
Metal
molding
and
casting
(
foundries)
3
24,161
8,054
NA
Tobacco
products
processing
1
23,827
23,827
467
Aluminum
forming
4
17,493
4,373
405
Dairy
products
processing
2
16,768
8,384
426
Glass
manufacturing
2
16,537
8,269
437
Centralized
waste
treatment
2
15,999
8,000
NA
Independent
and
stand­
alone
laboratories
5
8,388
1,678
466
Porcelain
enameling
2
5,024
2,512
468
Copper
forming
1
621
621
NA
Printing
&
publishing
1
550
550
460
Hospital
2
544
272
417
Soap
and
detergent
manufacturing
1
262
262
Memorandum
9
August
2005
Page
11
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Nitrogen
Loads
Total
Annual
Nitrogen
Load
(
lb/
yr)
Average
Nitrogen
Load
per
Facility
(
lb/
yr)

443
Paving
and
roofing
materials
(
tars
and
asphalt)
1
166
166
461
Battery
manufacturing
1
46
46
411
Cement
manufacturing
1
27
27
434
Coal
mining
1
0.37
0.37
Source:
NutrientsAnalysis
[
2].
NA
­
Industry
category
does
not
have
effluent
limitations
guidelines
and
standards
established;
therefore,
there
is
no
applicable
40
CFR
Part.
Memorandum
9
August
2005
Page
12
Table
5.
Point
Source
Category
Rankings
by
Total
Phosphorus
Load
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Phosphorus
Loads
Total
Annual
Phosphorus
Load
(
lb/
yr)
Average
Phosphorus
Load
per
Facility
(
lb/
yr)

430
Pulp,
paper
and
paperboard
87
2,861,224
32,888
436
Mineral
mining
and
processing
18
2,022,989
112,388
423
Steam
electric
power
generation
57
1,771,149
31,073
414
Organic
chemicals,
plastics,
and
synthetic
fibers
57
1,038,920
18,227
432
Meat
and
poultry
products
19
926,344
48,755
422
Phosphate
manufacturing
11
858,692
78,063
407
Canned
and
preserved
fruits
and
vegetables
processing
8
529,548
66,194
439
Pharmaceutical
manufacturing
10
478,812
47,881
418
Fertilizer
manufacturing
6
313,581
52,264
410
Textile
mills
36
174,507
4,847
455
Pesticide
chemicals
5
102,969
20,594
433
Metal
finishing
22
56,350
2,561
419
Petroleum
refining
13
53,966
4,151
420
Iron
and
steel
manufacturing
10
46,749
4,675
421
Nonferrous
metals
manufacturing
4
39,742
9,936
406
Grain
mills
manufacturing
3
35,363
11,788
409
Sugar
processing
6
33,983
5,664
415
Inorganic
chemicals
14
24,031
1,716
408
Canned
and
preserved
seafood
processing
2
18,642
9,321
454
Gum
and
wood
chemicals
1
17,593
17,593
NA
Vinyl
chloride
and
chlor­
alkali
3
15,192
5,064
429
Timber
products
processing
2
13,597
6,799
451
Concentrated
aquatic
animal
production
2
11,958
5,979
425
Leather
tanning
and
finishing
3
11,221
3,740
Memorandum
Table
5
(
Continued)
9
August
2005
Page
13
40
CFR
Part
Point
Source
Category
#
Facilities
Reporting
Phosphorus
Loads
Total
Annual
Phosphorus
Load
(
lb/
yr)
Average
Phosphorus
Load
per
Facility
(
lb/
yr)

463
Plastic
molding
and
forming
3
10,790
3,597
NA
Airport
deicing
1
8,108
8,108
405
Dairy
products
processing
1
7,706
7,706
NA
Drinking
water
treatment
4
7,350
1,837
443
Paving
and
roofing
materials
(
tars
and
asphalt)
2
7,133
3,567
467
Aluminum
forming
4
5,221
1,305
469
Electrical
and
electronic
components
2
5,212
2,606
413
Electroplating
7
4,978
711
440
Ore
mining
and
dressing
3
3,754
1,251
NA
Tobacco
products
processing
1
3,403
3,403
NA
Independent
and
stand­
alone
laboratories
3
2,345
782
444
Waste
combustors
(
commercial
incinerators
combusting
hazardous
waste)
3
2,296
765
445
Landfills
3
2,296
765
426
Glass
manufacturing
1
1,416
1,416
NA
Miscellaneous
foods
and
beverages
3
692
231
471
Nonferrous
metals
forming
and
metal
powders
3
601
200
457
Explosives
1
545
545
460
Hospital
2
50
25
437
Centralized
waste
treatment
1
0.78
0.78
Source:
NutrientsAnalysis
[
2].
NA
­
Industry
category
does
not
have
effluent
limitations
guidelines
and
standards
established;
therefore,
there
is
no
applicable
40
CFR
Part.

REFERENCES
1.
U.
S.
EPA.
2005
Screening­
Level
Analysis.
Washington,
D.
C.
August
2005.
Docket
OW­
2004­
0032.
Memorandum
Table
5
(
Continued)
9
August
2005
Page
14
2.
U.
S.
EPA.
2005.
NutrientsAnalysis
Database.
Docket
OW­
2004­
0032.
