Idaho Administrative Code › Title IDAPA 58 - Environmental Quality, Department of › Rule 58.01.25 - RULES REGULATING THE IDAHO POLLUTANT DISCHARGE ELIMINATION SYSTEM PROGRAM › Section 58.01.25.304 - MONITORING AND REPORTING REQUIREMENTS

Current through August 31, 2023
01.
Monitoring Requirements
. A permit must include the following
			 requirements for monitoring: (3-24-22)
a.
			 Requirements concerning the proper use, maintenance, and installation, when
			 appropriate, of monitoring equipment or methods (including biological
			 monitoring methods when appropriate); (3-24-22)
b. The type, intervals, and frequency of
			 monitoring sufficient to yield data which are representative of the monitored
			 activity including, when appropriate, continuous monitoring;
			 (3-24-22)
c. Provisions for
			 reporting the results of monitoring, including frequency, appropriate for the
			 regulated activity based on the impact of that activity and as specified in 40
			 CFR Part 127 (NPDES Electronic Reporting). Reporting shall be no less frequent
			 than specified in 40 CFR
			 122.44; (3-24-22)
d. The mass (or other measurement specified
			 in the permit) for each pollutant limited in the permit; (3-24-22)
e. The volume of effluent discharged from
			 each outfall; (3-24-22)
f. Other
			 measurements as appropriate, including: (3-24-22)
i. Pollutants in internal waste streams under
			 Subsection 303.08; (3-24-22)
ii. Pollutants in intake water for net
			 limitations under Subsection
			 303.07; (3-24-22)
iii. Frequency, rate of discharge, etc., for
			 non-continuous discharges under Subsection
			 303.05; (3-24-22)
iv. Pollutants subject to notification
			 requirements under Subsection
			 301.01; and (3-24-22)
v. Pollutants in sewage sludge or other
			 monitoring as specified in 40 CFR Part 503 ; or as determined to be necessary
			 on a case-by-case basis pursuant to the Clean Water Act section
			 405(d)(4), Section
			 380 (Sewage Sludge) of these rules,
			 and IDAPA 58.01.16.650, "Wastewater Rules"; (3-24-22)
g. According to sufficiently sensitive test
			 procedures (i.e., methods) approved under 40 CFR Part 136 for the analysis of
			 pollutants or pollutant parameters, or another method required under 40 CFR
			 Part 401 through 471 or Part 501 through 503. Consistent with 40 CFR Part 136 ,
			 applicants or permittees have the option of providing matrix or sample specific
			 minimum levels rather than the published levels. Further, where an applicant or
			 permittee can demonstrate that, despite a good faith effort to use a method
			 that would otherwise meet the definition of "sufficiently sensitive," the
			 analytical results are not consistent with the QA/QC specifications for that
			 method, then the Department may determine that the method is not performing
			 adequately and the Department should select a different method from the
			 remaining EPA-approved methods that is sufficiently sensitive consistent with
			 provisions outlined in Subsections
			 304.01.g.i. and ii. For the
			 purposes of this section, a method is "sufficiently sensitive" when: (3-24-22)
i. The method minimum level (ML) is at or
			 below the level of the effluent limit established in the permit for the
			 measured pollutant or pollutant parameter; or (3-24-22)
ii. The method has the lowest ML of the
			 analytical methods approved under 40 CFR Part 136 or required under 40 CFR
			 Chapter I, Subchapter N or O, for the measured pollutant or pollutant
			 parameter; and (3-24-22)
h. In the case of pollutants or pollutant
			 parameters for which there are no approved methods under 40 CFR Part 136, or
			 methods are not otherwise required under 40 CFR Part 401 through 471 or Part
			 501 through 503, monitoring shall be conducted according to a test procedure
			 specified in the permit for such pollutants or pollutant parameters.
			 (3-24-22)