SECTION 252:690-3-89. Effluent monitoring frequency when permit limitations are required

(a)   When monitoring is required in a permit, the following are the minimum monitoring frequencies for parameters during the initial permit cycle:

(1)   once a week for temperature limits.

(2)   twice a month for aquatic toxicity criterion-based limits, human health and raw water criterion-based limits, and agriculture criterion-based limits.

(3)   for bacteriological limitations:

(A)   twice a week during May 1 through September 30 to protect the PBCR beneficial use,

(B)   once a week to protect the SBCR beneficial use, if the receiving stream is impaired for bacteria, and

(C)   once a week for total coliform limits, unless bacteriological limitations for PBCR are also established in the permit, in which case the minimum total coliform monitoring frequency will be once a week for the period October 1 through April 30 only to protect the PPWS beneficial use.

(b)   DEQ may increase the monitoring frequencies listed in (a)(1) and (2) of this Section for a period not to exceed one (1) year during the initial permit cycle for the purpose of establishing the pattern and extent of variation for a given pollutant.

[Source: Added at 19 Ok Reg 1721, eff 6-13-02; Amended at 28 Ok Reg 1316, eff 7-1-11; Amended at 30 Ok Reg 1097, eff 7-1-13]