Idaho Admin. Code r. 58.01.25.301 - PERMIT CONDITIONS FOR SPECIFIC CATEGORIES

In addition to conditions set forth in Section 300 (Conditions Applicable to all Permits), conditions identified in this section apply to all IPDES permits within the categories specified below. (3-24-22)

01. Existing Manufacturing, Commercial, Mining, and Silvicultural Dischargers. In addition to the reporting requirements under Subsection 300.12, all existing manufacturing, commercial, mining, and silvicultural dischargers must notify the Department as soon as they know or have reason to believe: (3-24-22)

a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit if that discharge will exceed the highest of the following notification levels: (3-24-22)

i. One hundred micrograms per liter (100 pg/L); (3-24-22)

ii. Two hundred micrograms per liter (200 pg/L) for acrolein and acrylonitrile; (3-24-22)

iii. Five hundred micrograms per liter (500 pg/L) for 2,4-dinitrophenol and for 2-methyl-4,6- dinitrophenol; and (3-24-22)

iv. One milligram per liter (1 mg/L) for antimony; (3-24-22)

v. Five (5) times the maximum concentration value reported for that pollutant in the permit application in accordance with Subsection 105.07; or (3-24-22)

vi. The level established by the Department in accordance with Subsection 302.08; and (3-24-22)

b. That any activity has occurred or will occur which would result in any discharge, on a non-routine or infrequent basis, of a toxic pollutant which is not limited in the permit if that discharge will exceed the highest of the following notification levels: (3-24-22)

i. Five hundred micrograms per liter (500 pg/L); (3-24-22)

ii. One milligram per liter (1 mg/L) for antimony; (3-24-22)

iii. Ten (10) times the maximum concentration value reported for that pollutant in the permit application in accordance with Subsection 105.07; or (3-24-22)

iv. The level established by the Department in accordance with Subsection 302.08. (3-24-22)

02. Publicly Owned Treatment Works. All POTWs must provide adequate notice to the Department of the following: (3-24-22)

a. Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to the Clean Water Act section 301 or 306 if it were directly discharging those pollutants; and (3-24-22)

b. Any substantial change in the volume or character of pollutants being introduced into that POTW by a source introducing pollutants into the POTW at the time of issuance of the permit. For purposes of this subsection, adequate notice shall include information on: (3-24-22)

i. The quality and quantity of effluent introduced into the POTW, and (3-24-22)

ii. Any anticipated impact of the change on the quantity or quality of effluent to be discharged from the POTW. (3-24-22)

03. Municipal Separate Storm Sewer Systems. The operator of a large or medium municipal separate storm sewer system or a municipal separate storm sewer that has been designated by the Department under 40 CFR 122.26(a)(1)(v) must submit an annual report by the anniversary of the date of the issuance of the permit for such system. As of December 21, 2020, all reports submitted in compliance with this section must be submitted electronically by the owner, operator, or the duly authorized representative of the MS4 to the Department in compliance with this section and 40 CFR Part 127 unless waived pursuant to 40 CFR 127.15. 40 CFR Part 127 is not intended to undo existing requirements for electronic reporting. Prior to this date, and independent of 40 CFR Part 127, the owner, operator, or the duly authorized representative of the MS4 may be required to report electronically if specified by a particular permit. The report shall include: (3-24-22)

a. The status of implementing the components of the storm water management program that are established as permit conditions; (3-24-22)

b. Proposed changes to the storm water management programs that are established as permit conditions. Such proposed changes shall be consistent with Subsection 105.18.b.iii.; (3-24-22)

c. Revisions, if necessary, to the assessment of controls and the fiscal analysis reported in the permit application under Subsection 105.18.b.iv. and 105.18.b.v.; (3-24-22)

d. A summary of data, including monitoring data, that is accumulated throughout the reporting year; (3-24-22)

e. Annual expenditures and budget for the year following each annual report; (3-24-22)

f. A summary describing the number and nature of enforcement actions, inspections, and public education programs; and (3-24-22)

g. Identification of water quality improvements or degradation. (3-24-22)

04. Storm Water Dischargers. The initial permits for discharges composed entirely of storm water issued pursuant to 40 CFR 122.26(e)(7) shall require compliance with the conditions of the permit as expeditiously as practicable but in no event later than three (3) years after the date of issuance of the permit. (3-24-22)

05. Concentrated Animal Feeding Operations (CAFOs). Any applicable permit must include provisions pursuant to 40 CFR 122.42(e). (3-24-22)

Notes

Idaho Admin. Code r. 58.01.25.301