[Code of Federal Regulations]
[Title 40, Volume 28]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR503.46]

[Page 848]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 503_STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE
--Table of Contents
 
                         Subpart E_Incineration
 
Sec. 503.46  Frequency of monitoring.

    (a) Sewage sludge. (1) The frequency of monitoring for beryllium 
shall be as required in subpart C of 40 CFR part 61, and for mercury as 
required in subpart E of 40 CFR part 61.
    (2) The frequency of monitoring for arsenic, cadmium, chromium, 
lead, and nickel in sewage sludge fed to a sewage sludge incinerator 
shall be the frequency in Table 1 of Sec. 503.46.

     Table 1 of Sec. 503.46--Frequency of Monitoring--Incineration
------------------------------------------------------------------------
 Amount of sewage sludge \1\ (metric
       tons per 365 day period)                    Frequency
------------------------------------------------------------------------
Greater than zero but less than 290..  Once per year.
Equal to or greater than 290 but less  Once per quarter (four times per
 than 1,500.                            year).
Equal to or greater than 1,500 but     Once per 60 days (six times per
 less than 15,000.                      year).
Equal to or greater than 15,000......  Once per month (12 times per
                                        year).
------------------------------------------------------------------------
\1\ Amount of sewage sludge fired in a sewage sludge incinerator (dry
  weight basis).

    (3) After the sewage sludge has been monitored for two years at the 
frequency in Table 1 of Sec. 503.46, the permitting authority may 
reduce the frequency of monitoring for arsenic, cadmium, chromium, lead, 
and nickel.
    (b) Total hydrocarbons, oxygen concentration, information to 
determine moisture content, and combustion temperatures. The total 
hydrocarbons concentration and oxygen concentration in the exit gas from 
a sewage sludge incinerator stack, the information used to measure 
moisture content in the exit gas, and the combustion temperatures for 
the sewage sludge incinerator shall be monitored continuously.
    (c) Air pollution control device operating parameters.For sewage 
sludge incinerators subject to the requirements in subpart O of 40 CFR 
part 60, the frequency of monitoring for the appropriate air pollution 
control device operating parameters shall be the frequency of monitoring 
in subpart O of 40 CFR part 60. For all other sewage sludge 
incinerators, the appropriate air pollution control device operating 
parameters shall be at least daily.

(Approved by the Office of Management and Budget under control number 
2040-0157)

[58 FR 9387, Feb. 19, 1993, as amended at 64 FR 42573, Aug. 4, 1999]