020-15 Wyo. Code R. § 26

Current through April 27, 2019

Section 26 - Frequency of monitoring

(a) Biosolids (other than domestic septage).

• (i) The frequency of monitoring for the pollutants in Tables 1 and 2 of Section 23; the pathogen density requirements in Section 31(a) and in Section 31(b) (iii) through (b) (v); and the vector attraction reduction requirements in Section 32(f) through (m) for biosolids placed on an active biosolids unit shall be the frequency in Table 1 of Section 26. The preparer of the biosolids shall conduct the monitoring required by this section.

  Table 1 Of Section 26

  Frequency of Monitoring - Surface Disposal

  Amount of biosolids*

  (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 1,500 Once per quarter

  (four times per year)

  Equal to or greater than

  1,500 but less than 15,000 Once per 60 days

  (six times per year)

  Equal to or greater than

  15,000 Once per month

  (12 times per year)

  * Amount of biosolids placed on an active biosolids unit (dry weight basis).

• (ii) After the biosolids have been monitored for two years at the frequency in Table 1 of Section 26, the permitting authority may reduce the frequency of monitoring for pollutant concentrations and for the pathogen density requirements in Section 31(a) (v) (B) through (I), but in no case shall the frequency of monitoring be less than once per year when biosolids are placed on an active biosolids unit.

(b) Domestic septage. If the vector attraction reduction requirements in Section 32(r) are met when domestic septage is placed on an active biosolids 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 biosolids unit on which the biosolids is covered and for three years after a biosolids unit closes when a final cover is placed on the biosolids.

020-15 Wyo. Code R. § 26