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 Oklahoma Administrative Code (Last Updated: March 11, 2021)
 TITLE 785. Oklahoma Water Resources Board
 Chapter 46. Implementation of Oklahoma's Water Quality Standards
 Subchapter 15. Use Support Assessment Protocols

  SECTION 785:46-15-6. Assessment of Primary Body Contact Recreation support  

Latest version.
  • (a)   Scope. The provisions of this Section shall be used to determine whether the subcategory of Primary Body Contact of the beneficial use of Recreation designated in OAC 785:45 for a waterbody is supported during the recreation season from May 1 through September 30 each year. Where data exist for multiple bacterial indicators on the same waterbody or waterbody segment, the determination of use support shall be based upon the use and application of all applicable tests and data.
    (b)   Escherichia coli (E. coli).
    (1)   The Primary Body Contact Recreation subcategory designated for a waterbody shall be deemed to be fully supported with respect to E. coli if the geometric mean of 126 colonies per 100 ml is met. These values are based upon all samples collected over the recreation period in accordance with OAC 785:46-15-3(c).
    (2)   The Primary Body Contact Recreation subcategory designated for a waterbody shall be deemed to be not supported with respect to E. coli if the geometric mean of 126 colonies per 100 ml is not met. These values are based upon all samples collected over the recreation period in accordance with OAC 785:46-15-3(c).
    (c)   Enterococci.
    (1)   The Primary Body Contact Recreation subcategory designated for a waterbody shall be deemed to be fully supported with respect to enterococci if the geometric mean of 33 colonies per 100 ml is met. These values are based upon all samples collected over the recreation period in accordance with OAC 785:46-15-3(c).
    (2)   The Primary Body Contact Recreation subcategory designated for a waterbody shall be deemed to be not supported with respect to enterococci if the geometric mean of 33 colonies per 100 ml is not met. These values are based upon all samples collected over the recreation period in accordance with OAC 785:46-15-3(c).

[Source: Added at 17 Ok Reg 1775, eff 7-1-00; Amended at 21 Ok Reg 1910, eff 7-1-04; Amended at 25 Ok Reg 1455, eff 7-1-08; Amended at 28 Ok Reg 1017, eff 7-1-11]