[Code of Federal Regulations]
[Title 40, Volume 26]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR503.26]

[Page 842-843]
 
                   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 C--Surface Disposal
 
Sec. 503.26  Frequency of monitoring.

    (a) Sewage sludge (other than domestic septage). (1) The frequency 
of monitoring for the pollutants in Tables 1 and 2 of Sec. 503.23; the 
pathogen density requirements in Sec. 503.32(a) and in 
Sec. 503.32(b)(2); and the vector attraction reduction requirements in 
Sec. 503.33(b)(1) through (b)(4) and Sec. 503.33(b)(7) through (b)(8) 
for sewage sludge placed on an active sewage sludge unit shall be the 
frequency in Table 1 of Sec. 503.26.

                       Table 1 of Sec.  503.26.--Frequency of Monitoring--Surface Disposal
----------------------------------------------------------------------------------------------------------------
 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 than   Once per quarter (four times per year).
 1,500.
Equal to or greater than 1,500 but less      Once per 60 days (six times per year).
 than 15,000.
Equal to or greater than 15,000............  Once per month (12 times per year).
----------------------------------------------------------------------------------------------------------------
\1\ Amount of sewage sludge placed on an active sewage sludge unit (dry weight basis).

    (2) After the sewage sludge has been monitored for two years at the 
frequency in Table 1 of this section, the permitting authority may 
reduce the frequency of monitoring for pollutant concentrations and for 
the pathogen density requirements in Sec. 503.32(a)(5)(ii) and 
(a)(5)(iii).
    (b) Domestic septage. If the vector attraction reduction 
requirements in Sec. 503.33(b)(12) are met when domestic septage is 
placed on an active sewage

[[Page 843]]

sludge unit, each container of domestic septage shall be monitored for 
compliance with those requirements.
    (c) Air. Air in structures within a surface disposal site and at the 
property line of the surface disposal site shall be monitored 
continuously for methane gas during the period that the surface disposal 
site contains an active sewage sludge unit on which the sewage sludge is 
covered and for three years after a sewage sludge unit closes when a 
final cover is placed on the sewage sludge.

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

[58 FR 9387, Feb. 19, 1993, as amended at 64 FR 42570, Aug. 4, 1999]