NC0005266_Fact Sheet_20181113

NCDENR/DEQ/DWR
FACT SHEET FOR NPDES PERMIT RENEWAL
NPDES Permit NC0005266, Louisiana-Pacific Corporation
Roaring River WWTP
Facility Information
Applicant/Facility Name:
Louisiana Pacific LP Corporation / Roaring River WWTP
Applicant Address:
P.O. Box 98, Roaring River, NC 28669
Facility Address:
Off Highway 268, West of Roaring River, NC
Permitted Flow
2.00 MGD
Type of Waste:
97% Industrial, 3% Domestic
Facility/Permit Status:
Active / Renewal
County:
Wilkes
Miscellaneous
Receiving Stream:
Yadkin River
Regional Office:
WSRO
Stream Segment:
12- 38
Stream Classification:
C
Quad
C14NE, Roaring River
303 d Listed?
No
Permit Writer:
Joe R. Corporon, P.G.
Subbasin:
03-07-01
Date:
260ct2018
Updated 13Nov2018
Drainage Area mil :
610
Summer 7 10 cfs
228
30Q2 cfs :
Average Flow cfs :
976
IWC (%):
1.3%
Primary SIC Code:
2493
FACILITY PROCESS SUMMARY
Louisiana Pacific (LP) Corporation's Roaring River Plant manufactures "hardboard." Their
processes and discharges are governed under federal regulations 40CFR 429 Timber Products
Processing, Subpart E - Wet Process Hardboard Subcategory, Smooth One -Sided (SI S).
The facility purchases chips (softwood/hardwood), and/or grinds local wood scraps into chips.
The chips are washed, screened, digested into pulp. The pulp is then slurred into molds, and the
molded product is then heat -treated under pressure to make a smooth, one-sided hardboard.
An adjacent processing plant (previously owned by LP, but now owned and operated by the
CertainTeed Corporation), manufactures a fiber -cement board. By agreement, this adjacent
facility discharges its contact cooling water to LP's intake treatment impoundment. This transfer
is accomplished via hard -piping to prevent gas loss to the atmosphere.
Louisiana Pacific (LP) Corporation - Roaring River Plant
Renewal - NPDES Permit NC0005266
Page 1

PERMITTING SUMMARY
Effluent limitations under Subpart E are based on best practicable control technology available
(BPT). Parameters of concern include BOD5, TSS and pH. Permit limits are based on gross
product processed (wood pulp in pounds per 1, 000 pounds). According to Application EPA Form
2C, the Permittee utilizes 1,579.57 pounds (dry) for combined "hard production lines 1 and 2"
total (see app. page 2 of 4) discharging to Outfall 001.
Note that gross product usage is identical to the previous permit cycle.
40CFR 429.61 - Subpart E
Pollutant or Pollutant Property
BPT Effluent Limitations
Parameter
Daily Maximum
in Pounds per 1,000 lbs
Monthly Average
in Pounds per 1,000 lbs
BOD5
20.5
10.7
TSS
37.3
24.6
H
6-9 S
Average Production: Based on 1,579.57 lbs/1000 lbs gross product.
Parameter
Daily Maximum
Pounds per day
Monthly Average
Pounds per day
BOD5
32,381
15,796
TSS
58,918
38,857
H
6-9 (SU)
PERMITTING HISTORY
In 2008 the NPDES Unit modified LP's permit to accommodate a new wet scrubber blowdown
waste -stream requiring an increase in permitted flow from 1.5 MGD to 2.0 MGD. This
modification did not increase loading or limits (except the WET -testing percentage).
The Permittee's water -conservation efforts required installing a wet scrubber to comply with
National Emission Standards for Hazardous Air Pollutants. The mill complies with Maximum
Achievable Control Technology Requirements (MACT) by removing hazardous air pollutants
(HAPs) primarily methanol at the mill's sludge digesters.
Wet -scrubber blow -down discharges below the surface of LP's treatment -process aeration basin
for immediate contact and mixing with the existing biomass. However, the wet -scrubber's organic
content increases the existing BOD loading to the WWTP by only 3%. Therefore, no changes to
the WWTP limits and monitoring were necessary to accommodate this neighboring wastestream.
Louisiana Pacific (LP) Corporation - Roaring River Plant
Renewal - NPDES Permit NC0005266
Page 2

TREATMENT SYSTEM
Treatment consists of two (2) separate wastewater treatment plants:
1. a 0.030 MGD extended -aeration package plant with sludge holding tank
for domestic sanitary sewerage [component details in progress], and
2. a 2.00 MGD industrial -waste treatment system consisting of
• bar screen and/or in -line grinder
• influent pump station
• primary clarifier [modified to an equalization basin]
• dissolved air flotation unit and pumps
• sludge holding and mixing tank
• solids dewatering system consisting of two "S-roll" filter
presses & conveyor system — one for each waste type
• aeration lagoon
• nutrient addition system
• secondary clarifier
• two (2) each emergency primary settling basins
• effluent mixing box w/ chlorination
• tertiary clarifier
• effluent magnetic flow meter
Notes: The existing primary clarifier has been converted to an equalization tank, and a primary
DAF unit was added. Sanitary effluent flow has been diverted to the effluent mixing box (taken
out of the aerated lagoon). Both sanitary and process wastewater streams are mixed prior to
effluent sampling and flow measurement.
Outfall 002 discharges to the junction box most of the time, thus classified as an internal outfall.
If Outfall 002 discharges to the receiving stream, it is reported as external Outfall 002.
TOXICITY TESTING
The facility's WET -Test history shows consistent compliance with the permit requirements (see
attached). No changes recommended.
Current Requirement: Chronic P/F at 1.3%, January, April, July, October.
Proposed Requirement: Chronic P/F at 1.3%, January, April, July, October.
COMPLIANCE SUMMARY: BASED ON THE PREVIOUS 5 YEARS
There are no outstanding and/or chronic compliance problems related to the NPDES permit. The
facility received no Notices of Violation during the period Jan2014 through November 2018.
INSTREAM MONITORING:
LP is not required to perform instream monitoring due to its participation in the Yadkin -Pee Dee
River Basin Association.
Louisiana Pacific (LP) Corporation - Roaring River Plant
Renewal - NPDES Permit NC0005266
Page 3

REASONABLE POTENTIAL ANALYSIS:
The Reasonable Potential Analysis (RPA) was not conducted as there are no parameters of
concern.
BASIS FOR PERMIT LIMITS:
• The facility is subject to 40 CFR 429 Timber Products Processing, Subpart E — Wet Process
Hardboard Subcategory, Smooth One -Sided (S 1 S).
• pH limit in the permit is based on the North Carolina water quality standards [15A NCAC
2B .0200].
• BOD AND TSS limits in the permit are based on settlement negotiated during the previous permit
cycle.
The parameters and calculated limits presented here are for comparison purposes only. The current limits
are more restrictive than the guidelines project. The existing limits were based on a negotiated settlement
in 1995. The facility had a history of high effluent solids, which contributed to degradation of the
downstream habitat of the Yadkin River. Significant improvements were made at the plant and this portion
of the Yadkin River is no longer biologically impaired.
CHANGES IN THE PERMIT:
• Updated formatting
• Added parameter codes to the effluent monitoring tables
• Updated eDMR requirement text, Section A. (5.).
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice:
Permit Scheduled to Issue:
STATE CONTACT:
November 13, 2018
January 6, 2018
If you have any questions on any of the above information or on the attached permit, please contact
Joe Corporon at joe.corporon&ncdenr.gov or call his direct line [phone].
Louisiana Pacific (LP) Corporation - Roaring River Plant
Renewal - NPDES Permit NC0005266
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