[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR429.11]

[Page 88]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 429--TIMBER PRODUCTS PROCESSING POINT SOURCE CATEGORY--Table of Contents
 
Sec. 429.11  General definitions.

    In addition to the definitions set forth in 40 CFR part 401, the 
following definitions apply to this part:
    (a) The term ``hydraulic barking'' means a wood processing operation 
that removes bark from wood by the use of water under a pressure of 6.8 
atm (100 psia) or greater.
    (b) The terms ``cubic feet'' or ``cubic meters'' of production in 
subpart A means the cubic feet or cubic meters of logs from which bark 
is removed.
    (c) The term ``process wastewater'' specifically excludes noncontact 
cooling water, material storage yard runoff (either raw material or 
processed wood storage), and boiler blowdown. For the dry process 
hardboard, veneer, finishing, particleboard, and sawmills and planing 
mills subcategories, fire control water is excluded from the definition.
    (d) The term ``gross production of fiberboard products'' means the 
air dry weight of hardboard or insulation board following formation of 
the mat and prior to trimming and finishing operations.
    (e) The term ``hardboard'' means a panel manufactured from 
interfelted ligno-cellulosic fibers consolidated under heat and pressure 
to a density of 0.5 g/cu cm (31 lb/cu ft) or greater.
    (f) The term ``insulation board'' means a panel manufactured from 
interfelted ligno-cellulosic fibers consolidated to a density of less 
than 0.5 g/cu cm (less than 31 lb/cu ft).
    (g) The term ``smooth-one-side (S1S) hardboard'' means hardboard 
which is produced by the wet-matting, wet-pressing process.
    (h) The term ``smooth-two-sides (S2S) hardboard'' means hardboard 
which is produced by the wet-matting, dry-pressing process.
    (i) The term ``debris'' means woody material such as bark, twigs, 
branches, heartwood or sapwood that will not pass through a 2.54 cm (1.0 
in) diameter round opening and is present in the discharge from a wet 
storage facility.
    (j) For the subcategories for which numerical limitations are given, 
the daily maximum limitation is a value that should not be exceeded by 
any one effluent measurement. The 30-day limitation is a value that 
should not be exceeded by the average of daily measurements taken during 
any 30-day period.

[46 FR 8285, Jan. 26, 1981, as amended at 46 FR 57287, Nov. 23, 1981]