NC0005266_More Information (Received)_20200402

,, TiRc Suite50 International Dr. T 864.281.0030
150 TRCcompanies.com
Greenville, SC 29615
April 2, 2020
Ms.Julie Grzyb RECEIVED
Supervisor, NPDES Complex Permitting Section APR 0 3 2020
NC Department of Environmental Quality, Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617 NCDEQIDWRINPDES
Subject: Louisiana Pacific—Roaring River NPDES Permit Modification
NPDES Permit No. NC0005266, Wilkes County
Dear Ms.Grzyb:
On behalf of Louisiana-Pacific's Roaring River Mill (LP) and in accordance with Section E.2.of Part II of the
facility's National Pollutant Discharge Elimination System (NPDES) Permit,TRC is providing notification to
the North Carolina Department of Environmental Quality(NCDEQ)that the mill has discontinued the
manufacture of hardboard siding products at the Roaring River Plant in Roaring River,Wilkes County,
North Carolina. Both siding manufacturing lines were shut down as of the end of March 2020. As part of
the manufacturing changes,the site has also shut down the Bake-Oven MACT system as well as the MACT
scrubber and digester system. The facility is evaluating the status of other utilities.
With the termination of the siding manufacturing,the site is now focusing operations on continuing the
application of paint finishes on lap and panel strand siding products which will now be manufactured
elsewhere. In addition,the site intends to assemble corner trim pieces by gluing two trim pieces
together,fabricate strand shake, prime strand shake edges, and paint strand shake. The site will also
continue to purchase logs, chip the logs onsite using the existing log chipping equipment,and sell the
chips.
The wastewater generated onsite will be primarily from cleanup of painting and gluing equipment,
cleanup sinks in the finishing department, and spray and cleanup from quality-control humidity test
chambers. LP anticipates the average total wastewater flowrate will be 40,000 gallons per day, or less.
TRC and LP are currently evaluating potential modifications to the process wastewater treatment system.
The site will continue to treat its own sanitary wastewater as well as sanitary wastewater from the
neighboring Alura facility in the dedicated sanitary wastewater package plant separately from the process
wastewater.
LP and TRC understand that these changes may require a modification to the site's NPDES permit. Please
let us know what additional information NCDEQ may need to modify the permit. If you have any
\\GREENVILLE-FP1\WPGVL\P1T2\376386\0000\L3763860000-001 NCDEQ NOTIFICATION DOCX

Ms.Julie Grzyb
NC Department of Environmental Quality, Division of Water Resources,
April 2, 2020
Page 2
questions, please contact me at 864.421.3890([e-mail]), or Mr. Lam Nguyen with LP at
336.466.1839 ([e-mail]).
Sincerely,
TRC Environme tal Corporation
•
es M. K rlin, P.E.
oject Manager/Senior Engineer
cc: Joe Corporon, P.G., NCDEQ
Lam Nguyen &Chad Witherspoon
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