NC0000752_Staff Comments_19900921

NPDES DOCIMENT !;CANNING COVER :SHEET
NPDES Permit:
NC0000752
Roanoke Rapids Mill WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Staff Comments
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
September 21, 1990
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NPDES Permit Rating Work Sheet
NPDES No.: 1 t 1 C-1 016 ILL 01 r 1 5-I 41
Facility Name:
1C i/li}IMiP1 r 1041 1 rihiIriEIRi
4I
City: 1g 16 I A hI ID IIC _I 1. I LA1 /4 I P if I I3 IS 1 1 1 I 1 1
/Regular Addition
❑ Discretionary Addition
O Score change, but no
status change
O Deletion
�'LL11 1° 1AIIAIt.' 1"1R10 I lid id 'lc 1L I IRI'IAr 1S
Receiving Water: IL 6 tf I N I D i jC IE 1 I R 1;! 1 1 E 1 Q 1 I 1
Reach Number:1 1 1 1 1 1 1 1 I 1 1 1
is this faclllty a steam electric power plant (SWC=4911)
with one or more of the following characteristics)
1. Power output S00 MW or greater (not using a cooling pond/lake)
2. A nuclear power plant
3. Cooling water discharge greater than 25% of the receiving stream's 7Q10 flow rate
0 YES; score Is 600 (stop here) ❑ NO (continue)
FACTOR 1: Toxic Pollutant Potentiail
PCS SIC Code: 1 Z I 1 2-1 1 Primary SIC Code: 1 Z 1 G I L 11_1
Other SIC Codes: 1I_1 1_I
11111
Industrial Subcategory Code: 1 1 (I3J (Code 000 if no subcategory)
Determine the Toxicity potential from Appendix A. Be sure to use the TOTAL toxklty potendd column and check one)
1 1 1 1 1 1
Is this permit for a munklpal separate storm sewer
serving a population greater than 100,000?
0 YES; score is 700 (stop here)
❑ NO (continue)
Toxicity Group
❑ No process
waste streams
❑ 1.
❑ 2.
1 11 11
Code Points Toxidty Group Code Points Toxidty Group Code Points
❑ 3.
0 0 ❑ 4.
1 5 ❑ 5.
2 10 ❑ 6.
3 1S
4 20
5 25
6 30
❑ 7.
❑ 8.
❑ 9.
7 35
8 40
9 45
10 S0
FACTOR 2: Flow/S recm Row VOIUM9 (Cowie,* .dh r S clion.A or Stiaion It chock arfly on.)
4�ection A —Wastewater Flow Only Considered Section B--Wastewate
r and Stream Flow Considered
Wastewater Type
(See instructions)
Type!: Flow < S MGD
Row 5 to 10 MGD
How >10 to S0 MGD
Flow > S0 MGD
Vype ii: Flow <1 MGD
Flow 1 to S MGD
Row >5 to 10 MGD
Row >10 MGD
Type III: Flow <1 MGD
flow 1 to S MGD
How >S to 10 MGD
Flow >10 MCO
O
O
O
❑
0
❑
❑
0
❑
0
Code Points
11 0
.12 10
13 20
14 30
21 10
22 20
23 30
24 50
31 0
32 10
33 20
34 30
Wastewater Type
(See Instructions)
TYPE Vi11:
Type
Percent of instream
Wastewater Caxen-
tratlon at Receiving
Stream low How
< 1096
2.1046 to <5096
2 S0%
< 10%
2109.6 to 40%
2 5096
Code Points
O 41 0
O 42 10
O 43 20
O S1 0
O S2 20
O S3 30
1

FACTOR 3: Conventional Pollutants
(only when llrnitod by the permit)
A. Oxygen Demanding Pollutant: (ch .ck one)
Permit Limits: (check one)
B. Total Suspended Solids (TSS)
Permit Limits: (check one)
❑
❑
O
NPDES Permit Rating Work Sheet
NPDES No.: I /lc id I I 0 1_17 is -
I Z I
dBOD 0 COD ❑ Other:
0
O
Er
<100 Ibs/day
100 to 1000 Ibs/day
>1000 to 3000 Ibs/day
>3000 Ibs/day
<100 ibs/day
100 to 1000 Ibs/day
>1000 to S000 Ibs/day
>5000 lbs/day
Code Points
1 0
2 5
3 15
4 20
Code
-1
2
3
4
Ports
0
5
15
20
a
C. Nitrogen Pollutant: (check one) ❑ Ammonia 0 Other:
Permit Llmits (check one)
Nitrogen &whit:lent
O <300 Ibs/day
O 300 to 1000 lbs/day
O >1000 to 3000 lbs/day
O >3000 Ibs/day
• Code Points
1 0
2 5
3. 15
4 20
• Code Checked::.
Points Scored:#'_,,,'
Total Paints Factor 3: 111
•
FACTOR 4: Public Health Impact
Is there a publlc.drinking water supply located within SO miles downstream of the effluent disc barge (this includes any body of
water to which the recdving water is o tributary)? A public drinking water supply may Include infiltration galleries, or other
methods of conveyance that ultimately get water from the above referenced supply.
❑ (0f yes, check toxkity potential number below)
U NO (If no, go to Factor 5)
Determine the human health toxidty potential from Appendix A. Use the same SIC code and subcategory reference as in Factor 1. (Be
sure to use the human hum toxidty group column — check one below)
Toxicity Group
❑ No process
waste streams
❑ 1.
❑ 2.
Code Points
0 0
1 0
2 0
Toxidty Group
❑ 3.
❑ 4.
❑ 5.
❑ 6.
Code Points Toxidty Group Code Points
3 0
4 0
5 5
6 10
❑ 7. 7 15
❑ 8. 8 20
❑ 9. 9 25
❑ 10. 10 30
Code Number. Checked:. LJ... 1
Ilatai Points Factor 4: '1,,,,_1 1
2

FACTOR 5: Water Quality Factors
NPDES Permit Rating Work Sheet
NPDES No.:I1VIC Id 10 IU 1 elf I I z1
A. Is (or will) one or more of the effluent discharge limits based on water quality factors of the receiving stream (rather than
technology -based federal effluent guidelines, or technology -based state effluent guidelines), or has a wastdoad allocation
been assigned to the discharge?
Code
6a' Yes 1
❑ No 2 0
Points
10
B. Is the receiving water In compliance with appllcabk water quality standards for pollutants that are water quality limited In
the permit?
Code Points
O' Yes 1 . 0
❑ No 2 5
C. Does the effluent discharged from this fadllty exhibit the reasonabk potential to violate water quality standards due to whole
effluent taxldtyl
O Yes
Er No
Code Points
1 10
2
0
FACTOR 6: Proximity to Near Coastal Waters
A. Base Score: Enter flow code here (from Factor 2): 12. I.I
Check appropriate facility HPRI Code (from PCS):
HPRI I Code HPRI Score
O 1 1 20
O 2 2 0
3 3 30
O 4 4 0
0 5 5 20
HPRI code checked: I.31
Base Score: (HPRI Score) .3 tl x (Multiplication Factor)
Enter the multiplication fader that corresponds
to the flow code•. Ij/ I o I
1
8. Additional Points — NEP Program
For a facility that has an HPRI code of 3, does the facility
discharge to one of the estuarks enrolled In the Notional
Estuary Protedlon (NEP) program (see instructions) or
the Chesapeake Bay?
• Code
O Yes 1
ER' No 2
Points
10
0
Row Code
11, 31, or 41
12, 32, or 42
13, 33, or 43
14or34
21 or 51
22 or 52
23 or 53
24
Multiplication Factor
0.00
0.05
0.10
0.15
0.10
0.30
0.60
1.00
3o (TOTAL POINTS)
C. Additional Points — Great Lakes Area of Concern
For a facility that has an HPRI code of S, does the fodllty
discharge any of the pollutants of concern Into one of the
Great Lakes' 31 areas of concern (see instructions)
Code limber Checked: AI 3
I B I? I C I I
Points Factor 6: Al 31 ° 1 + B I_I! J + C I_I ° !
Code
0 Yes 1
lie No 2
Points
10
0
1
! �v J TOTAL
3

rvrurs rerrrnu koring ►NorK Sneer
CORE SUMMARY NPDES No.: 1 11/4i1 C 1 6 1 0 1 !. 1 1) I.I S I Z 1
Factor Description Total Points
1 To.* Pollutant Potential J 0
2 Flow/Streamflow Volume sv
3 COrwentional Pollutants tr.
4 Public Health Impacts 0
S Water Quality Factor
6 Proximity to Near Coastal Waters 36
TOTAL (Factors 1 through 6)
(� 4
S1. Is the total score equal to or greater than 80? Yes (Facility is a major) ❑ No
S2. If the answer to the above question is no, would you like this facility to be discretionary major?
❑ No
J
❑ Yes (Add S00 points to the above score and provide reason below:
Reason:
NEW SCORE:
(Bfl
OLD SCORE
Permit Reviewer's Name
( (4.1) 733 - Sbt3
Phone Number
Viebo
Date •
4