1.2 Operator Duties, Process Control Decisions & OIRC

1.2 Operator Duties, Process Control Decisions & OIRC

[!NOTE] Regulatory Focus: 25 Pa. Code § 302.102 legally defines a "Process Control Decision" as any decision or operational action that maintains or alters the biological, chemical, physical, or radiological quality or quantity of water or wastewater treated or distributed. Under Act 11, only certified operators with the appropriate class and subclasses—or uncertified individuals operating strictly within written, approved Standard Operating Procedures (SOPs)—are legally permitted to make process control decisions. Unlawful delegation or unauthorized process control adjustments can result in severe administrative, civil, and criminal penalties.

The regulatory integrity of Pennsylvania's water and wastewater utilities relies on the professional accountability of certified operators. The Pennsylvania General Assembly recognized in Act 11 of 2002 that the operation of modern water purification and wastewater reclamation facilities requires technical discretion directly affecting public health and natural ecosystems. Consequently, Chapter 302 establishes stringent operational boundaries, explicitly delineating what constitutes an authorized process control decision, the exact duties of the designated Operator in Responsible Charge (OIRC), the lawful structure of Standard Operating Procedures (SOPs), and mandatory non-compliance reporting protocols.

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Process Control Decisions Defined (25 Pa. Code § 302.102)

A Process Control Decision is defined in 25 Pa. Code § 302.102 as:

"A decision which maintains or changes the water quality or quantity of a water system or wastewater system in a manner that may affect the public health or the environment; or a decision which maintains or changes the physical, chemical, biological, or radiological properties of water or wastewater in a treatment or distribution facility."

This statutory definition establishes a clear legal boundary between licensed professional decision-making and routine mechanical labor. Every operational action taken within a facility either falls into the category of a process control decision or routine maintenance.

Actions Classified as Process Control Decisions

The following actions directly alter treatment efficacy or flow characteristics and are legally classified as process control decisions:

• Chemical Dosage Modifications: Adjusting coagulant (alum, polyaluminum chloride), coagulant aid, polymer, or pH adjustment chemical feed rates in response to changing raw water turbidity, temperature, or jar test data.
• Disinfection Rate Adjustments: Changing chlorine feed pump strokes, vacuum chlorinator flow rates, sodium hypochlorite dosing, or UV reactor bank energization to achieve mandated disinfection contact time (CT) or distribution residual targets.
• Filter Operations: Altering hydraulic filtration rates, initiating filter backwash cycles based on head loss or turbidity breakthrough, or returning a filter to service following filter-to-waste ripening.
• Activated Sludge Balancing: Adjusting return activated sludge (RAS) flow rates to maintain secondary clarifier blanket stability, or modifying waste activated sludge (WAS) mass flow rates to control mean cell residence time (MCRT) or mixed liquor suspended solids (MLSS).
• Aeration Basin Dissolved Oxygen Management: Adjusting variable frequency drives (VFDs) on aeration blowers, mechanical aerators, or basin control valves to manage dissolved oxygen (DO) setpoints for nitrification or denitrification.
• Flow Routing and Valve Operations: Opening or closing major transmission valves, transferring treatment trains online or offline, activating emergency raw water interconnections, or modifying distribution pressure zones.

Actions Not Classified as Process Control Decisions

Conversely, routine activities that do not directly alter water quality, chemical dosage, or process dynamics do not constitute process control decisions:

• Performing preventive mechanical maintenance, such as changing lubricating oil in centrifugal pumps or replacing motor bearings.
• Janitorial tasks, groundskeeping, snow removal, or facility structural painting.
• Reading and recording operational data from master meters, pressure gauges, or continuous online analyzers without adjusting process setpoints.
• Calibrating benchtop laboratory equipment (such as spectrophotometers or pH meters) using primary verification standards, provided analytical data is delivered to a certified operator for process interpretation.
• Repairing broken distribution piping or collection system lines under the physical direction and immediate supervision of an on-site certified operator.

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Certified Operator Responsibilities & Operational Logs

Under 25 Pa. Code § 302.1201, every certified operator making process control decisions must possess an active certificate matching or exceeding the classification size and all operational subclasses of the facility. An operator with a Class C license cannot make unguided process control decisions at a Class B facility, nor may an operator lacking Subclass 11 oversee gaseous chlorination systems.

Mandatory Operational Recordkeeping

Pennsylvania regulations require all facilities to maintain comprehensive, permanent operational logs. These logs serve as legal records during regulatory audits, sanitary surveys, and compliance investigations. The daily log must capture:

1. Total daily raw, treated, and finished flow volumes.
2. Quantity and commercial grade of every chemical applied during each operational shift.
3. Daily analytical testing results, including raw, settled, and finished water turbidity, pH, alkalinity, disinfectant residuals, and bacteriological sample collections.
4. Process control decisions executed during the shift, including the specific operational rationale (e.g., "Increased coagulant stroke 5% due to 15 NTU river spike").
5. Calibrations, verifications, and routine preventative maintenance performed on monitoring instruments and critical feed systems.
6. Process upsets, alarm conditions, electrical outages, and equipment failures.
7. Printed name, certification number, and signature (or secure digital identifier) of the certified operator on duty.

Five-Year Record Retention Rule

Under 25 Pa. Code § 302.1201(f), daily operational logs, laboratory bench sheets, instrument calibration documentation, and chemical dosage logs must be retained on-site for a minimum of 5 years. These records must be readily accessible for inspection by DEP representatives during unannounced inspections.

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Operator in Responsible Charge (OIRC)

The Operator in Responsible Charge (OIRC) is the cornerstone of a utility's administrative and operational compliance structure. Act 11 mandates that the owner of every drinking water and wastewater system formally designate one or more certified operators as the OIRC for the facility.

Designation and Qualifications

• The designated OIRC must hold an active certificate equal to or greater than the facility's classification grade and must hold all technology subclasses corresponding to the facility's treatment units.
• Multiple OIRCs may be designated across distinct operational areas (e.g., one OIRC for a water treatment plant and a separate OIRC for the distribution system), provided each individual's operational boundaries are formally documented.

The Mandatory 10-Calendar-Day Notification Rule

Under 25 Pa. Code § 302.1201(c), the system owner is legally required to notify the Department of Environmental Protection in writing within 10 calendar days of placing, changing, or replacing an Operator in Responsible Charge. Operating a facility without a designated OIRC constitutes an immediate violation of Act 11, subjecting the facility owner to administrative penalties.

Core Duties of the OIRC

• Direct Oversight: Establishing, supervising, and directing the daily technical operations of the entire water or wastewater system.
• Standard Operating Procedure Authorship: Drafting, validating, approving, and signing all facility Standard Operating Procedures (SOPs).
• Personnel Supervision: Mentoring and directly supervising subordinate operators, operators-in-training (OITs), and non-certified operational technicians.
• Compliance Assurance: Ensuring the facility strictly adheres to the terms of its Public Water Supply Permit, NPDES discharge permit, and drinking water Maximum Contaminant Levels (MCLs).
• Regulatory Reporting: Reviewing and certifying monthly compliance submissions via the Drinking Water Electronic Lab Reporting (DWELR) system and electronic Discharge Monitoring Reports (eDMR).

Contract OIRCs for Small Systems

Small municipal systems or private entities lacking full-time certified staff may retain an independent contract operator to serve as the OIRC. The DEP requires that contract OIRC agreements be formalized in writing, detailing minimum weekly on-site presence hours, emergency response time commitments (typically requiring physical arrival within 1 to 2 hours of an emergency alarm), and explicit responsibility for process control decisions.

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Standard Operating Procedures (SOPs) as an Administrative Bridge

Recognizing that fully certified operators cannot be physically present at every facility 24 hours a day, Act 11 and Chapter 302 authorize the use of Standard Operating Procedures (SOPs). An SOP serves as a legal, administrative bridge allowing non-certified personnel or operators holding subordinate license grades to execute specific process adjustments.

Essential Components of a Compliant SOP

To satisfy DEP standards, an SOP must be developed, approved, and signed by the facility OIRC and must contain:

1. Defined Environmental Triggers: Clear operational conditions that initiate the action (e.g., raw water settled turbidity exceeding 1.0 NTU, or finished water free chlorine dropping below 1.2 mg/L).
2. Strict Numeric Action Ranges: Non-discretionary step-by-step instructions (e.g., "Increase sodium hypochlorite metering pump frequency from 40% to 50% to raise chlorine residual by 0.3 mg/L").
3. Clear Boundary Limits: Upper and lower limits beyond which the subordinate personnel cannot proceed.
4. Mandatory Escalation Protocols: Clear instructions on when the SOP ceases to apply, requiring immediate contact with the OIRC (e.g., "If finished water chlorine residual remains below 1.0 mg/L after 30 minutes, immediately halt adjustments and contact the OIRC").

Subordinate operators executing actions under an approved SOP are legally protected under Act 11, provided they remain strictly within the written boundaries established by the OIRC.

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Mandatory Non-Compliance Reporting & Legal Penalties

Act 11 imposes an affirmative, non-delegable duty upon both facility owners and certified operators to report environmental non-compliance and acute health risks to the Department of Environmental Protection.

24-Hour Verbal Notification Requirement

Under 25 Pa. Code § 302.1202, an operator or system owner must verbally notify the appropriate DEP regional office within 24 hours upon becoming aware of:

• Any breakdown in treatment resulting in an exceedance of Maximum Contaminant Levels (MCLs), Maximum Residual Disinfectant Levels (MRDLs), or surface water treatment rules.
• A catastrophic loss of pressure (< 20 psi) throughout a distribution system pressure zone.
• Detection of E. coli or fecal coliform in finished drinking water.
• Disinfection failure lasting more than 4 hours at an entry point.
• Sanitary sewer overflows (SSOs), collection system failures, or bypasses of secondary treatment discharging untreated sewage into Commonwealth waters.
• Industrial pretreatment upsets causing severe biological disruption in a wastewater facility.

5-Day Written Incident Report

Following initial verbal notification, the facility must submit a detailed written report to the DEP within 5 calendar days, providing:

• A complete chronological summary of the upset or non-compliance event.
• Detailed laboratory sampling results, flow records, and continuous monitoring transcripts.
• The root physical, mechanical, or biological cause of the failure.
• Immediate corrective actions implemented to protect public health and restore compliance.
• Long-term engineering or administrative remediation plans to prevent recurrence.

Sanctions and Enforcement for Non-Compliance

Failure to report non-compliance, unauthorized process control decision-making, or intentional falsification of operational logs subjects operators and owners to severe statutory penalties:

• Administrative Sanctions: Revocation, suspension, or civil reprimand of operator certificates by the State Certification Board.
• Civil Penalties: The DEP may assess civil administrative penalties of up to $1,000 per day for each statutory or regulatory violation under Act 11.
• Criminal Prosecution: Knowingly submitting fraudulent monitoring data, altering operational logs, or signing inaccurate compliance reports constitutes a criminal misdemeanor under 18 Pa.C.S. § 4904 (unsworn falsification to authorities), punishable by substantial criminal fines and imprisonment.