day

8 425.22 Effluent limitations

rep

must comply with 40 CFR Part 403, and resenting the degree of effluent re- achieve the following pretreatment duction attainable by the applica- standards: tion of the best conventional pollutant control technology (BCT).

PSES Except as provided in 40 CFR 125.30 Pollutant or pollutant property Maximum Maximum through 125.32, any existing point

for any 1 for monthly

average source subject to this subpart must achieve the following effluent limita

Milligrams per liter (mg/l) tions representing the degree of efflu

Sulfide

24 ent reduction attainable by the appli- Total Chromium

12

8 cation of the best conventional pollut- PH

(1)

(") ant control technology (BCT): The ef

Not less than 7.0. fluent limitations are those for BODs, TSS, Oil and Grease, and pH contained (47 FR 52870, Nov. 23, 1982, as amended at 61 in $ 425.21.

FR 35685, July 8, 1996] $425.23 Effluent limitations

rep

$ 425.26 Pretreatment standards for resenting the degree of effluent re- new sources (PSNS) duction attainable by the applica

Except as provided in 40 CFR 403.7 tion of the best available technology economically achievable

and 425.04, any new source subject to (BAT).

this subpart that introduces process

wastewater pollutants into a publicly Except as provided in 40 CFR 125.30

owned treatment works must comply through 125.32, any existing point

with 40 CFR Part 403, and achieve the source subject to this subpart must

pretreatment standards contained in achieve the following effluent limita

$ 425.25. tions representing the degree of effluent reduction attainable by the appli- Subpart C-Hair Save or Pulp: cation of the best available technology economically achievable (BAT): The ef

Non-Chrome Tan, Retan-Wet fluent limitations are those for Total

Finish Subcategory Chromium contained in 8 425.21.

$ 425.30 Applicability; description of 8 425.24 New source performance the hair save or pulp, non-chrome standards (NSPS).

tan, retan-wet finish subcategory. Any new source subject to this sub

The provisions of this subpart are appart must achieve the following new

plicable to process wastewater dissource performance standards (NSPS): charges resulting from any tannery

which processes raw or cured cattle or NSPS

cattle-like hides into finished leather Pollutant or pollutant property

Maximum for

by hair save or pulp unhairing, vegemonthly averany 1 day

table tanning or alum, syntans, oils age

and other agents for tanning, and Kg/kkg (or pound per 1,000 retan-wet finishing. Ib) of raw material

$ 425.31 Effluent limitations BOD,

rep 6.9 3.1

resenting the degree of effluent reOil and grease

duction attainable by the applicaTotal chromium

0.06 tion of the best practicable control PH

(')
(')

technology currently available Within the range 6.0 to 9.0

(BPT).

Except as provided in 40 CFR 125.30 8 425.25 Pretreatment standards for

through 125.32, any existing point existing sources (PSES).

source subject to this subpart must Except as provided in $425.04 and 40 achieve the following effluent limitaCFR 403.7 and 403.13, any existing tions representing the degree of efflusource subject to this subpart that in- ent reduction attainable by the applitroduces process wastewater pollutants cation of the best practicable control into a publicly owned treatment works technology currently available (BPT):

Maximum for

TSS

9.9 2.9 0.18

4.5
1.3

1