CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 429—TIMBER PRODUCTS PROCESSING POINT SOURCE CATEGORY > SUBPART A—Barking Subcategory (§429.20 to §429.26) > 429.24—New source peformance standards (NSPS).

429.24—New source peformance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):
(a) The following limitations apply to all mechanical barking installations: There shall be no discharge of process wastewater pollutants into navigable waters.
(b) The following limitations constitute the maximum permissible discharge for hydraulic barking installations:
Subpart A
Pollutant or pollutant property NSPS effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Metric units (kilograms per cubic meter of production)
BOD5 1.5 0.5
TSS 6.9 2.3
pH (1) (1)
English units (pounds per cubic foot of production)
BOD5 0.09 0.03
TSS 0.431 0.144
pH (1) (1)
1 Within the range 6.0 to 9.0 at all times.
Any new source subject to this subpart must achieve the following new source performance standards (NSPS):
(a) The following limitations apply to all mechanical barking installations: There shall be no discharge of process wastewater pollutants into navigable waters.
(b) The following limitations constitute the maximum permissible discharge for hydraulic barking installations:
Subpart A
Pollutant or pollutant property NSPS effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Metric units (kilograms per cubic meter of production)
BOD5 1.5 0.5
TSS 6.9 2.3
pH (1) (1)
English units (pounds per cubic foot of production)
BOD5 0.09 0.03
TSS 0.431 0.144
pH (1) (1)
1 Within the range 6.0 to 9.0 at all times.