Idaho Admin. Code r. 58.01.25.304

Current through September 2, 2024

Section 58.01.25.304 - MONITORING AND REPORTING REQUIREMENTS

01.Monitoring Requirements. A permit will include:

a. Requirements for the proper use, maintenance, and installation, when appropriate, of monitoring equipment or methods (including biological monitoring methods when appropriate);

b. Type, intervals, and frequency of monitoring sufficient to yield data that represent the monitored activity including, when appropriate, continuous monitoring;

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 must be no less frequent than specified in 40 CFR 122.44;

d. Mass (or other measurement specified in the permit) for each pollutant limited in the permit;

e. Volume of effluent discharged from each outfall;

f. Other measurements as appropriate, including:

i. Pollutants in internal waste streams under Subsection 303.08;

ii. Pollutants in intake water for net limits under Subsection 303.07;

iii. Frequency, rate of discharge, etc., for non-continuous discharges under Subsection 303.05;

iv. Pollutants subject to notification requirements under Subsection 301.01; and

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 under CWA Section 405(d)(4), Section 380 (Sewage Sludge) of these rules, and IDAPA 58.01.16.650, "Wastewater Rules";

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 Parts 401 through 471 or Part 501 through 503. Consistent with 40 CFR Part 136, applicants or permittees may provide matrix- or sample-specific minimum levels rather than the published levels. When an applicant or permittee can demonstrate that, despite a good faith effort to use a method that otherwise meets the definition of "sufficiently sensitive," the analytical results are not consistent with the QA/QC specifications for the method, then the Department may determine the method is not performing adequately and the Department will 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. method is "sufficiently sensitive" when:

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

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

h. For pollutants or pollutant parameters which have 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 must be conducted according to a test procedure specified in the permit for the pollutants or pollutant parameters.

02.Reporting Monitoring Results.

a. Except as provided in Subsections 304.02.d. and 304.02.e., the Department will establish requirements to report monitoring results on a case-by-case basis with a frequency dependent on the nature and effect of the discharge, but at least once a year. Results must be electronically reported in compliance with 40 CFR Part 127.

b. For sewage sludge use or disposal practices, the Department will establish requirements to monitor and report results on a case-by-case basis with a frequency dependent on the nature and effect of the sewage sludge use or disposal practice; minimally as specified in 40 CFR Part 503, Section 380 of these rules, and Idaho's Wastewater Rules, IDAPA 58.01.16.650, "Wastewater Rules," (where applicable), but at least once a year. Results must be electronically reported in compliance with 40 CFR Part 127.

c. The Department will establish requirements to report monitoring results for storm water discharges associated with industrial activity subject to an ELG on a case-by-case basis with a frequency dependent on the nature and effect of the discharge, but at least once a year.

d. The Department will establish requirements to report monitoring results for storm water discharges associated with industrial activity, other than those addressed in Subsection 304.02.c., on a case-by-case basis with a frequency dependent on the nature and effect of the discharge. At a minimum, a permit for a discharge will require the discharger to:

i. Conduct an annual inspection of the facility site to identify areas contributing to a storm water discharge associated with industrial activity;

ii. Evaluate whether measures to reduce pollutant loadings identified in a storm water pollution prevention plan are adequate and properly implemented following the terms of the permit or whether additional control measures are needed;

iii. Maintain for a period of three (3) years a record summarizing the results of the inspection and a certification that the facility is complying with the plan and the permit, and identifying incidents of noncompliance;

iv. Sign the report and certification in accordance with Section 090; and

v. For storm water discharges associated with industrial activity from inactive mining operations, where annual inspections are impracticable, may require certification that the facility is complying with the permit, or alternative requirements, once every three (3) years by an Idaho licensed professional engineer.

e. A permit that does not require monitoring results reports at least annually must require the permittee to report, at least annually, all instances of noncompliance not reported under Subsection 300.12.

Idaho Admin. Code r. 58.01.25.304

Effective July 1, 2024