NC0021661_Wasteload Allocation_19940902

NPDES DOCUMENT !;CANNING COVER !SHEET
NC0021661
Libbey-Owens-Ford WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation`
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
, 1994
5;pk.1„ 2_
This document is printed on reuse paper - ignore any
content on the resrerse side

Request # 7893
Facility Name: Libby - Owen Ford WWTP - City of Laurinburg
NPDES No.: NC0021661
Type of Waste: 100 % Domestic
Facility Status: Existing
Permit Status: Renewal
Receiving Stream: Big Shoe Heel Creek
Stream Classification: C - Swamp
S ubbas in: 03-07-55
County: Scotland Stream Characteristic;
Regional Office: Fayetteville USGS #
Requestor: Wilson Date: 1991
Date of Request: 6/22/94 Drainage Area (mi2): 83.9
Topo Quad: 121 NW Summer 7Q10 (cfs): 13
Winter 7Q10 (cfs): 23
Average Flow (cfs): 96.5
3002 (cfs): 35
IWC (%):
Existing WLA checked: x
Staff Report: x
Topo checked: x
USGS Flows confirmed:
IWC Spreadsheet:
Stream Classification: x
Nutrient Sensitivity: x
Instream Data: x
Brief of WLA Analysis
1976: modeled w/ Secondary Limits; C classification and 17.8 cfs s7Q10
1981: renewed w/ Secondary Limits; note on WLA, "now, 'City of Laurinburg'"
1986: reissued w/ Secondary Limits and fecal coliform limit; copies of chemical analysis, (looks like petroleum products) but no
explaination as to need or use)
1991: reissued w/ same limits
This discharge is officially Permitted to the City of Laurinburg; Libbey - Owen Ford has a seperate Permit [NC0049514] for their
Industrial discharge. Discharge is averaging approximately 1/3 of Permitted quantity and is displaying treatment levels better than
Advanced Secondary to almost Advanced Tertiary on a regular, consistent basis.
Mapping from the 1991 WLA notes indicates that many dischargers exist in this area. Per Staff Report; "[t]he discharge from this
package treatment plant goes into Libby - Owen - Ford's process discharge line which goes into their cooling water pond, which
discharges only occasionally to Big Shoe Heel Creek."
Instream Data
Temperature range
Upstream: 7 - 25 ° C
Downstream: 7 - 25 ° C
ranges are from monthly averages
dissolved oxygen range
8.2 - 9.0 mg/I
7.9 - 9.0 mg/I
refer instream monitoring note on that WLA; NC0020656
Existinq_Limits:
Monthly Averages
Summer Winter
Wasteflow (MGD): 0.030
BOD5 (mg/I): 30 30
NH3N (mg/I): nr nr
DO (mg/I): 5.0 5.0
TSS (mg/I): 30 30
Fecal Col. (/100 ml): 200 200
pH (SU): 6 - 9 6 - 9
Residual Chlorine (µ.g/I): monitor monitor
Oil & Grease (mg/I):
TP (mg/I):
TN (mg/I):
WQ or EL
Upstream Location: Hwy 74
Downstream Location: SR 1612 near Maxton
Parameters: Temperature, dissolved oxygen, fecal coliform, conductivity

Libby - Owens Ford [Laurinbury Permit' NC0021061
Upstream: US 74 east
Month Temp DO Saturation Fecal Conductivity
Jun-94
May-94
API-94
Mar-94
Feb-94
Jan-94
Dec-93
Nov-93
Oct 93
Sep-93
Aug-93
Jul-93
23
18
19
13
10
7
8
12
16
22
24
25
8.2
8.4
8.2
8.4
8.9
8.9
8.9
8.9
9.0
8.2
8.3
8.3
96%
89%
88%
80%
79%
73%
75%
83%
91%
94%
99%
100%
65
220
100
170
51
95
97
40
126
173
126
190
32
34
35
38
36
45
39
43
31
33
32
29
•
Downstream: SR 1612 near Maxton
Temp DO Saturation Fecal Conductivity
24
19
19
13
10
7
8
12
17
22
24
25
8.1
8.2
8.2
8.5
8.9
9.0
8.8
8.7
8.9
7.9
8.2
8.0
96%
88%
88%
81%
79%
74%
74%
81%
92%
90%
97%
97%
29
60
45
15
84
28
31
69
63
179
141
126
50
44
42
42
44-
45
44
47
48
50
52
52
Ammonia [2 / 4 mg/Ij - Residual Chlorine - Fecal Collform
Instream Waste Concentrations
Residual Chlorine
7010 (cfs) 13.0
Design Flow (mgd) 0.03
Design Flow (cfs) 0.046
Stream Std (µg/I) 17
Upstream bkgrd level (µg/l) 0
IWC (%) .-0:4%_
Allowable Concentration (µg/i) < 4821.3 �>
Allowable Concentration (myl)
Fecal Limit
Ratio of 280.1 :1
200/100m1
Ammonia as NH3
(summer)
13.0 j 7010 (cfs)
Design Flow (mgd)
0.046 Design Flow (cfs)
1 Stream Std (mg/l)
0.22 Upstream bkgrd level (mg/1)
0.4% IWC (%)
221.4 ? Allowable Concentration (mg/I)
0.03
0.046
1.8
0.22
100.0%
1.8
Ammonia a8 NH3
(winter)
7010 (cfs)
Design Flow (mgd)
Design Flow (cfs)
Stream Std (mg/I)
Upstream bkgrd level (mg/i)
IWC (%)
Allowable Concentration (mgf)
8/10/94

SOC PRIORITY PROJECT: Yes _ No x
If yes, SOC No.
To: Attention:
Permits and Engineering Unit
Water Quality Section
July 21, 1994
NPDES STAFF REPORT AND RECOMMENDATIONS
County Scotland
Permit No. NC0021661
PART I. GENERAL INFORMATION
1. Facility and Address: City of Laurinburg
P.O. Box 249
Laurinburg, NC 28352
2. Date of Investigation: July 6, 1994
3. Report Prepared By: Grady Dobson, Environmental Engineer, FRO
4. Persons Contacted and Telephone Number: Robert Ellis, [phone]
5. Directions to Site: Libby -Owen -Ford is located on the south side of
US 74 at the junction of SR 1611 in Scotland County. The wastewater
treatment plant is at the rear of the property.
6. Discharge Point(s), List for all discharge points:
Latitude: 34° 44' 30" Longitude: 79° 27' 45"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
USGS Quad No.: I-21 NW USGS Quad Name: Johns, NC & SC
7. Site size and expansion area consistent with application?
x Yes No (If no, explain)
8. Topography (relationship to flood plain included): Relatively flat (0-
4% slope).
9. Location of nearest dwelling: None within 1,000 feet.
10. Receiving stream or affected surface waters:
a. Classification: Class "C" Swamp
b. River Basin and Subbasin No.: 03-07-55
c. Describe receiving stream features and pertinent downstream uses:
Fresh waters protected for secondary recreation, fishing, aquatic
life, including propagation and survival, and wildlife.
Shoe Heel Creek

Staff Report and Recommendations
Page 2
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: .03 MGD (Ultimate Design
Capacity)
b. What is the current permitted capacity of the Wastewater Treatment
facility? .03 MGD
c. Actual treatment capacity of the current facility (current design
capacity). .03 MGD
d. pate(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two (2) years.
N/A
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities. The existing system
includes grit removal, extended aeration, clarification,
chlorination, and sludge digestion (aerated).
f. Please provide a description of proposed wastewater treatment
facilities: N/A
g. Possible toxic impacts to surface waters: N/A
h. Pretreatment Program (POTWs only):
In development Approved
Should be requir-ia-- Not needed x
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM Permit
No.
Residual Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP Other
c. Landfill:
d. Other disposal/utilization scheme (Specify): In the past, a local
septic tank pumper had been disposing sludge in the manner in which
septage was disposed. The company has been advised that this was
unacceptable. The company is now pursuing disposal by land
;application at the City of Laurinburg's sludge site (Permit
No. WQ0002526).
3. Treatment plant classification (attach completed rating sheet): Class II
4. SIC Code(s): 4952
Primary 02 Secondary
Main Treatment Unit Code:

•
Staff Report and Recommendations
Page 3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants Funds or are
any public monies involved (municipals only)? N/A
2. Special monitoring or limitations (including toxicity) requests: N/A
3. Important SOC, JOC, or Compliance Schedule dates (please indicate):
Date
Submissionlof Plans and Specifications N/A
Begin Construction N/A
Complete Construction N/A
4. Alternative Analysis Evaluation: Has the facility evaluated all of the
nondiScharge options available. Please provide regional perspective for
each option evaluated. N/A (an existing facility)
Spray Irrigation: N/A
Connection to Regional Sewer System: N/A
Subsurface: N/A
Other disposal options: N/A
5. Other, Special Items: The discharge from this package treatment plant
goes into Libby-Owen-Ford's process discharge line which goes into their
cooling water pond, which discharges only occasionally to Big Shoe Heel
Creek.
PART IV - EVALUATION AND RECO/OU3NRATION
It is the recommendation of this office that NPDES Permit No. NC0021661
issued to the City of Laurinburg for Libby-Owen-Ford's wastewater treatment
plant be reissued.
f
Signature' of R=••r'E Preparer
Wa er Q ity Regional Supervisor
Date