Iowa Administrative Code › Agency 567 - Environmental Protection Commission › Title IV - Wastewater Treatment and Disposal › Chapter 63 - Monitoring, Analytical and Reporting Requirements › Rule 567-63.3 - Minimum Self-monitoring Requirements in Permits

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Monitoring by organic waste
				dischargers.
The minimum self-monitoring requirements to be
				incorporated in operation permits for facilities discharging organic wastes
				shall be the appropriate requirements in Tables I and II. Additional monitoring
				may be specified in the operation permit based on a case-by-case evaluation of
				the impact of the discharge on the receiving stream, toxic or deleterious
				effects of wastewaters, industrial contribution to the system, complexity of
				the treatment process, history of noncompliance or any other factor which
				requires strict operational control to meet the effluent limitations of the
				permit, as described in the Supporting Document for Permit Monitoring Frequency
				Determination, March 2022, located on the department's website.
(2)
Monitoring by inorganic waste
				dischargers.
The self-monitoring requirements to be incorporated in
				the operation permit for facilities discharging inorganic wastes shall be
				determined on a case-by-case evaluation of the impact of the discharge on the
				receiving stream, toxic or deleterious effects of wastewaters, complexity of
				the treatment process, history of noncompliance or any other factor which
				requires strict control to meet the effluent limitations of the permit, as
				described in the Supporting Document for Permit Monitoring Frequency
				Determination, March 2022, located on the department's website.
(3)
Monitoring of significant
				industrial users of publicly owned treatment works.
Monitoring for
				significant industrial users as defined in
				567-60.2 (455B) shall be
				determined as described in the Supporting Document for Permit Monitoring
				Frequency Determination, March 2022, located on the department's website.
				Results of such monitoring shall be submitted to the department in accordance
				with the reporting requirements in the operation permit. The monitoring program
				of a publicly owned treatment works with a pretreatment program approved by the
				department may be used in lieu of the supporting document.
(4)
Operational performance
				monitoring.
Operational performance monitoring for treatment unit
				process control shall be conducted to ensure that the facility is properly
				operated in accordance with its design. The results of any operational
				performance monitoring need not be reported to the department, but shall be
				maintained in accordance with rule
				567-63.2 (455B). Additional
				operational performance monitoring may be specified in the operation permit
				based on a case-by-case evaluation of the impact of the discharge on the
				receiving stream, toxic or deleterious effects of wastewaters, complexity of
				the treatment process, history of noncompliance or any other factor that
				requires strict control to meet the effluent limitations of the permit. The
				results of operational performance monitoring specified in the operation permit
				shall be submitted to the department in accordance with the reporting
				requirements in the operation permit.
(5)
Modification of minimum
				monitoring requirements.
Monitoring requirements may be modified or
				reduced at the discretion of the director when requested by the permittee.
				Adequate justification must be presented by the permittee that the reduced or
				modified requirements will accurately reflect actual wastewater characteristics
				and will not adversely impact the operation of the facility. Requests for
				modification or reduction of monitoring requirements in an existing permit are
				considered waiver requests and must follow the procedures in 567-paragraph
				60.4(2)
"b."
All reductions or modifications of monitoring
				incorporated into an operation or NPDES permit by amendment or upon reissuance
				of the permit are only effective until the expiration date of that
				permit.
(6)
Impairment
				monitoring.
If a wastewater treatment facility is located in the
				watershed of an impaired water body that is listed on Iowa's most recent
				Section 303(d) list (as described in
				40
				CFR Section 130.7) , additional monitoring
				for parameters that are contributing to the impairment may be included in the
				operation or NPDES permit on a case-by-case basis.