10.3 Regulatory Compliance Reporting (eDMR / DWELR) & Emergency Response

10.3 Regulatory Compliance Reporting (eDMR / DWELR) & Emergency Response

[!NOTE] The Compliance Accountability Framework: Environmental protection laws place non-negotiable legal responsibilities directly upon utility managers and certified operators. In Pennsylvania, wastewater treatment plants and collection systems are governed by the Clean Water Act (CWA) and the Pennsylvania Clean Streams Law (Act 394 of 1937, as amended; 35 P.S. §§ 691.1–691.1001). Operators do not merely operate treatment equipment; they serve as certified guardians of public health and Commonwealth water resources. State law demands absolute transparency: routine monitoring results must be certified electronically via the PA DEP eDMR or DWELR portals, while unpermitted discharges, toxic spills, or treatment failures trigger immediate statutory emergency notifications.

Falsifying compliance data, failing to report permit exceedances, or operating negligently constitutes a criminal violation under Pennsylvania law, carrying heavy statutory fines and mandatory terms of imprisonment for responsible corporate and municipal officials.

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NPDES Permit Architecture & Discharge Monitoring Reports (DMR)

Every municipal and industrial wastewater facility discharging treated effluent into surface waters of the Commonwealth must hold a valid National Pollutant Discharge Elimination System (NPDES) permit issued by the Pennsylvania DEP.

1. Structure of Effluent Limitations

NPDES permits translate federal technology-based standards and Pennsylvania water quality-based effluent limits (WQBELs) into numerical discharge caps across discrete averaging periods:

• Monthly Average: The arithmetic mean of all daily discharge measurements taken across a calendar month. Permits establish both concentration limits (e.g., $CBOD_5 \le 25\text{ mg/L}$, $TSS \le 30\text{ mg/L}$) and mass loading limits (lbs/day), calculated using the formula: $\text{Mass (lbs/day)} = \text{Flow (MGD)} \times \text{Concentration (mg/L)} \times 8.34$.
• Weekly Average: The arithmetic mean of daily discharges over a calendar week, typically enforced to restrict high episodic load discharges ($CBOD_5 \le 40\text{ mg/L}$, $TSS \le 45\text{ mg/L}$).
• Daily Maximum: The highest allowable single 24-hour discharge value during a monitoring period.
• Instantaneous Maximum (IMAX): An absolute ceiling concentration that must not be exceeded in any individual grab sample at any time. Any grab sample exceeding an IMAX limit constitutes an immediate, independent permit violation.

2. The Discharge Monitoring Report (DMR)

The Discharge Monitoring Report (DMR) is the central regulatory document used by the DEP and EPA to assess compliance. Monthly DMR submissions require certified operators to compile flow records, sample analytical results, calculated statistical averages, minimum/maximum operational values, and explanations of any non-compliance.

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PA DEP Electronic Reporting Platforms: eDMR and DWELR

Pennsylvania mandates that all routine compliance reporting be executed electronically through secure web applications hosted on the PA DEP GreenPort enterprise portal.

+---------------------------------------------------------------------------------------------------+
|                         PA DEP GreenPort Compliance Reporting Systems                             |
+---------------------------------------------------------------------------------------------------+
| System                  | Regulatory Scope                  | Core Users & Deadlines              |
+-------------------------+-----------------------------------+-------------------------------------+
| eDMR                    | NPDES wastewater discharge        | Wastewater operators and certifiers;|
| (electronic Discharge   | monitoring, sanitary overflows,   | Submissions due by the 28th day of  |
| Monitoring Report)      | and industrial pretreatment       | the following calendar month        |
+-------------------------+-----------------------------------+-------------------------------------+
| DWELR                   | Safe Drinking Water Act (Ch. 109) | Accredited laboratories and water   |
| (Drinking Water Elect.  | compliance samples (coliform,     | operators; Monthly data certified by|
| Laboratory Reporting)   | turbidity, lead, copper, inorg.)  | the 10th day of the following month |
+-------------------------+-----------------------------------+-------------------------------------+

1. The eDMR System (Wastewater)

• Access and User Roles: To maintain security and legal chain-of-custody, the eDMR platform establishes distinct user roles:
  • Viewer: Read-only access to view historical data and drafted reports.
  • Preparer: Authorized to input operational data, laboratory results, and monthly mass calculations into draft DMR tables. Preparers can validate data entry but cannot formally submit files to the DEP.
  • Certifier / Submitter: A licensed professional operator or legally authorized municipal official who possesses a formal Electronic Signature Agreement (ESA) and secure Personal Identification Number (PIN). The certifier reviews the prepared DMR, legally signs the document, and transmits it directly to the DEP database.
• Submission Deadline: Under standard Pennsylvania NPDES permit conditions, completed monthly eDMR reports must be certified and submitted no later than the 28th day of the month following the monitoring period (e.g., monitoring data collected throughout September must be submitted on or before October 28).

2. The DWELR System (Drinking Water)

• Operation: The Drinking Water Electronic Laboratory Reporting (DWELR) system is an electronic clearinghouse for public water supply monitoring data governed by 25 Pa. Code Chapter 109.
• Laboratory Upload & Operator Verification: Accredited commercial and utility laboratories upload drinking water test results directly into DWELR. Certified public water operators access DWELR during the preliminary review period to audit data for clerical errors, incorrect Public Water System Identification (PWSID) codes, or wrong sample points.
• Monthly Closure (10th Day Rule): Operators must review and verify records in DWELR by the 10th day of each month. At midnight on the 10th, the DWELR database closes, permanently archiving the records into the official Pennsylvania Drinking Water Information System (PADWIS).

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Permit Exceedance & Non-Compliance Reporting Protocols

When a wastewater facility experiences an operational upset, equipment breakdown, unpermitted discharge, or effluent limit exceedance, regulations mandate an immediate, two-step emergency notification procedure:

+---------------------------------------------------------------------------------------------------+
|                         Permit Non-Compliance Notification Mandates                               |
+---------------------------------------------------------------------------------------------------+
| Step 1: Immediate Oral Notification                                                               |
|   - Timeframe: Within 24 HOURS of becoming aware of the incident                                  |
|   - Recipient: PA DEP Regional Office (Water Management Program)                                  |
|   - After-Hours: PA DEP 24-Hour Emergency Response Regional Hotline                               |
|   - Scope: Any incident that may endanger public health, fish kills, SSOs, toxic spills, bypasses |
+---------------------------------------------------------------------------------------------------+
| Step 2: Comprehensive Written Submission                                                          |
|   - Timeframe: Within 5 DAYS of the oral notification                                            |
|   - Recipient: PA DEP Regional Office Operations Section                                          |
|   - Content: Exact cause, dates/times, duration, estimated volume, receiving stream, remedial     |
|     actions taken, and engineering corrections planned to prevent recurrence                      |
+---------------------------------------------------------------------------------------------------+

1. Mandatory 24-Hour Oral Notification

The permittee must notify the appropriate PA DEP Regional Office by telephone within 24 hours of becoming aware of:

• Any unpermitted bypass or diversion of waste streams from any portion of the treatment facility.
• Any Sanitary Sewer Overflow (SSO) or collection network rupture.
• Any incident that may endanger human health, downstream drinking water intakes, or the aquatic environment (such as an industrial toxic slug load, heavy metal spill, or severe dissolved oxygen sag causing a fish kill).
• Any violation of a maximum daily or instantaneous maximum discharge limit for toxic pollutants or hazardous substances listed in the permit.
• Emergency Hotline: If the incident occurs on a weekend, holiday, or outside normal business hours (8:00 AM to 4:00 PM), the operator must place the call to the PA DEP 24-Hour Emergency Response Hotline for that specific geographic region.

2. Mandatory 5-Day Detailed Written Report

Within $5\text{ calendar days}$ of the initial oral notification, the permittee must deliver a comprehensive formal written report to the DEP Regional Office. The report must contain:

1. A detailed description of the non-compliance and its root cause.
2. The exact period of non-compliance, including exact starting dates and times, ending dates and times, or, if the problem has not been resolved, the anticipated date and time when compliance will be restored.
3. The estimated volume, flow rate, and chemical characterization of the unpermitted discharge.
4. The specific receiving waterway affected and observations of any environmental damage.
5. Immediate mitigation steps taken to abate pollution and protect downstream users.
6. A clear engineering timeline of actions taken or planned to reduce, eliminate, and permanently prevent recurrence of the upset.

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Pennsylvania Clean Streams Law: Enforcement & Penalties

The Pennsylvania Clean Streams Law (Act of June 22, 1937, P.L. 1987, as amended; 35 P.S. §§ 691.1–691.1001) is one of the nation's most powerful state environmental statutes. Its overarching legislative mandate declares that all unpermitted discharges of sewage, industrial waste, or polluting substances into the waters of the Commonwealth constitute an illegal public nuisance.

+---------------------------------------------------------------------------------------------------+
|              Pennsylvania Clean Streams Law Enforcement & Penalty Structure                       |
+---------------------------------------------------------------------------------------------------+
| Enforcement Tool        | Legal Nature                      | Statutory Range / Impact            |
+-------------------------+-----------------------------------+-------------------------------------+
| Notice of Violation     | Formal written administrative     | Identifies infractions; sets        |
| (NOV)                   | warning issued by DEP inspectors  | required corrective deadlines       |
+-------------------------+-----------------------------------+-------------------------------------+
| Administrative Order    | Legally binding unilateral order  | Compels facility upgrades, flow     |
|                         | issued directly by DEP            | limits, or immediate cessation      |
+-------------------------+-----------------------------------+-------------------------------------+
| Consent Order and       | Negotiated, court-enforceable     | Establishes binding construction    |
| Agreement (COA)         | settlement between DEP and utility| schedules and stipulated penalties  |
+-------------------------+-----------------------------------+-------------------------------------+
| Sewer Connection Ban    | Administrative moratorium on new  | Halts municipal economic growth     |
| (Moratorium)            | building sewer hookups            | until hydraulic overloads cease     |
+-------------------------+-----------------------------------+-------------------------------------+
| Civil Financial         | Discretionary fines assessed by   | Up to $10,000 PER DAY per violation |
| Penalties               | DEP or Environmental Hearing Board|                                     |
+-------------------------+-----------------------------------+-------------------------------------+
| Criminal Prosecution    | Misdemeanor & Felony charges      | Fines up to $50,000 per day;        |
|                         | prosecuted by Attorney General    | Imprisonment up to 7 years          |
+-------------------------+-----------------------------------+-------------------------------------+

1. Civil Penalties: Up to $10,000 per Day

Under Section 605 of the Clean Streams Law (35 P.S. § 691.605), the DEP may assess civil penalties against any person or municipality that fails to comply with any rule, permit condition, or administrative order.

• The $10,000 Statutory Maximum: Civil penalties may be assessed at up to $10,000 per day for each separate violation.
• Compounding Daily Liability: If a wastewater facility discharges unpermitted pollutants for 30 consecutive days, each day represents an independent violation, exposing the utility to potential civil fines of up to $300,000 for that single monthly period.

2. Criminal Liability and Operator Accountability

Under Section 602 of the Clean Streams Law (35 P.S. § 691.602), statutory violations can be prosecuted criminally by the Pennsylvania Office of Attorney General:

• Negligent Violations (Misdemeanors): Any person or public official who negligently causes or allows water pollution is guilty of a misdemeanor, punishable by fines of $2,500 to $25,000 per day of violation and/or imprisonment of up to $1\text{ year}$.
• Willful / Knowing Violations (Felonies): Any person who knowingly or willfully discharges pollutants or tampers with monitoring data is guilty of a felony, punishable by fines of $5,000 to $50,000 per day and/or imprisonment of up to $7\text{ years}$.
• Individual Culpability: Clean water statutes pierce corporate and municipal veils. An individual certified operator who knowingly falsifies a DMR entry, bypasses treatment units without authorization, or intentionally hides a hazardous spill is held individually criminally liable, alongside utility executives and municipal supervisors.

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Facility Emergency Response Plans (ERP) & Contingency Operations

Under the federal America's Water Infrastructure Act (AWIA) Section 2013 and Pennsylvania DEP regulations, water and wastewater utilities must develop, maintain, and annually update an Emergency Response Plan (ERP) integrated with local municipal and county emergency management authorities.

1. Hazard Vulnerability Analysis (HVA)

Every ERP must be grounded in an HVA evaluating facility vulnerabilities against specific catastrophic threats:

• Natural Catastrophes: 100-year and 500-year riverine floods, severe hurricanes, winter ice storms, tornadoes, and seismic ground shifts.
• Infrastructure Failures: Total electric utility grid blackouts, high-voltage transformer explosions, supervisory control and data acquisition (SCADA) network failures, and catastrophic force main breaks.
• Malevolent Acts & Cyber Threats: Physical sabotage, chemical tank tampering, ransomware intrusions, and remote unauthorized manipulation of automated PLC control logic.

2. Auxiliary Power Redundancy

To ensure continuous operation during electrical grid blackouts, facilities must maintain dedicated on-site emergency power infrastructure:

• Diesel Standby Generators: Sized to supply continuous electrical load for all critical treatment systems (influent raw wastewater pumps, secondary aeration blowers, disinfection systems, and SCADA control panels).
• Automatic Transfer Switches (ATS): Automatically senses primary power loss, cranks the diesel generator, achieves stable operating frequency and voltage within 10 to 30 seconds, and transfers the plant electrical load without human intervention.
• Fuel Storage: Minimum on-site diesel fuel reserves sufficient for $48\text{ to }72\text{ hours}$ of continuous full-load operation under severe weather conditions.

3. Emergency Communication Phone Trees

In the event of an acute treatment breakdown or hazardous toxic release, the ERP mandates immediate activation of an emergency contact hierarchy:

1. Internal Plant Command: Lead Certified Operator $\rightarrow$ Operations Superintendent $\rightarrow$ Municipal Authority Manager.
2. Regulatory Notifications: PA DEP Regional Office (within 24 hours orally; within 1 hour for Tier 1 drinking water emergencies).
3. Downstream Users: Downstream municipal public water supply (PWS) surface water intakes must be notified immediately (within $2\text{ hours}$) to allow downstream water plants to close intake gates before the toxic plume arrives.
4. Emergency First Responders: Local 911 Dispatch, County Emergency Management Agency (EMA), Pennsylvania Emergency Management Agency (PEMA), and Regional HAZMAT Teams.
5. Chemical Emergency Assistance: CHEMTREC (1-800-424-9300) for hazardous chemical technical guidance.

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Toxic Chemical Storage, Containment & Spill Response

Wastewater treatment facilities handle large volumes of hazardous, corrosive, and toxic bulk chemicals: gaseous chlorine ($Cl_2$), sodium hypochlorite ($NaOCl$), ferric chloride ($FeCl_3$), aluminum sulfate, sulfuric acid ($H_2SO_4$), sodium hydroxide ($NaOH$), and anhydrous ammonia.

1. Secondary Containment: The 110% Capacity Standard

All hazardous liquid chemical bulk storage tanks must be protected by an engineered secondary containment structure (impervious reinforced concrete dikes, bermed rooms, or dual-walled self-containment tanks):

• The 110% Volume Rule: Secondary containment structures must be sized to hold a minimum of $110%$ of the total volume of the largest individual storage tank located within the containment basin.
• Precipitation Allowance for Outdoor Basins: If the secondary containment basin is located outdoors and exposed to rainfall, engineering design standards mandate containment capacity equal to $100%$ of the largest tank volume plus the rainfall volume generated by a 24-hour, 25-year storm event, with a minimum freeboard of $6\text{ inches}$.

2. Chemical Segregation & Incompatibility Hazards

Incompatible chemicals must be physically isolated in separate storage rooms equipped with dedicated, non-communicating containment sumps:

+---------------------------------------------------------------------------------------------------+
|                         Critical Chemical Incompatibility Protocols                               |
+---------------------------------------------------------------------------------------------------+
| Chemical Combination    | Reaction Mechanism                | Fatal Hazard Generated              |
+-------------------------+-----------------------------------+-------------------------------------+
| Mineral Acids           | Acid rapidly lowers pH;           | Liberates massive, fatal clouds     |
| (Sulfuric, Hydrochloric)| drives hypochlorite equilibrium   | of lethal toxic Chlorine Gas (Cl2)  |
|   + Sodium Hypochlorite | to molecular chlorine gas         |                                     |
+-------------------------+-----------------------------------+-------------------------------------+
| Mineral Acids           | Violent exothermic acid-base      | Violent boiling, steam eruptions,   |
|   + Strong Alkalis      | neutralization; massive thermal   | and corrosive liquid spattering     |
| (Caustic Soda, NaOH)    | energy release                    |                                     |
+-------------------------+-----------------------------------+-------------------------------------+
| Strong Oxidizers        | Rapid oxidation of organic        | Intense fires, explosive combustion,|
| (Chlorine, Hypochlorite)| hydrocarbon matrix; chemical      | and toxic hydrocarbon gases         |
|   + Petroleum / Solvents| flash decomposition               |                                     |
+-------------------------+-----------------------------------+-------------------------------------+

[!CAUTION] The Acid-Hypochlorite Disaster: Never permit mineral acids (such as sulfuric acid used for pH adjustment or ferric chloride coagulant) to share a containment area, floor trench, or drainage sump with sodium hypochlorite. If acid accidentally blends with hypochlorite, the solution violently releases concentrated, lethal chlorine gas ($Cl_2$), creating an immediate lethal threat to plant personnel and surrounding neighborhoods.

3. Spill Containment & Emergency Mitigation

• PPE Deployment: Responders must never enter an active chemical leak area without Level A (fully encapsulating chemical-resistant suit with positive-pressure Self-Contained Breathing Apparatus [SCBA]) for toxic gases like chlorine, or Level B for liquid splash hazards.
• Drain Isolation: All internal facility floor drains in chemical transfer bays must be equipped with normally closed, locking gate valves or air-inflated drain bladders to prevent spilled chemicals from reaching facility storm sewers or the headworks.
• Neutralization: Minor liquid spills are contained using inert absorbent booms (vermiculite, polypropylene). Acid spills are cautiously neutralized with agricultural limestone, soda ash, or sodium bicarbonate; alkaline spills are neutralized with weak organic acids (acetic or citric acid) before disposal.

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Public Notification (PN) Rules under the Safe Drinking Water Act

Under 25 Pa. Code Chapter 109 (Subchapter D, §§ 109.401–109.418), water suppliers must issue formal Public Notifications (PN) whenever their public water system fails to comply with primary drinking water standards, experiences an operational emergency, or fails to perform required monitoring.

+---------------------------------------------------------------------------------------------------+
|              Pennsylvania Safe Drinking Water Act Public Notification Hierarchy                   |
+---------------------------------------------------------------------------------------------------+
| Tier Level    | Severity & Public Health Risk       | Notification Window   | Required Actions    |
+---------------+-------------------------------------+-----------------------+---------------------+
| Tier 1        | Immediate acute public health threat| Within 24 HOURS       | DEP call <= 1 hr;   |
|               | with severe short-term consequences | (Mandatory 1-hr DEP)  | Broadcast, Reverse  |
|               | (E. coli, pressure < 20 psi, NO3)   |                       | 911, Boil Water Adv.|
+---------------+-------------------------------------+-----------------------+---------------------+
| Tier 2        | Potential serious adverse effects   | As soon as possible,  | Direct customer     |
|               | (Chemical MCLs, lead action level,  | but within 30 DAYS    | mailings, local     |
|               | conventional turbidity failures)    |                       | newspaper, billing  |
+---------------+-------------------------------------+-----------------------+---------------------+
| Tier 3        | Operational, monitoring, or testing | Within 1 YEAR         | Annual Consumer     |
|               | omissions; standard reporting delays| (or via annual CCR    | Confidence Report   |
|               | with no direct acute health impact  | by July 1)            | (CCR) or mailings   |
+---------------+-------------------------------------+-----------------------+---------------------+

1. Tier 1 Public Notification: Immediate Acute Hazard (24 Hours)

Tier 1 notices apply to violations and situations with significant potential to cause serious, immediate adverse health effects from short-term exposure:

• Tier 1 Trigger Conditions:
  1. Violation of the Maximum Contaminant Level (MCL) for E. coli, or failure to test for E. coli when any repeat sample tests positive for coliform.
  2. Violation of the MCL for Nitrate ($> 10\text{ mg/L}$) or Nitrite ($> 1.0\text{ mg/L}$) (triggers methemoglobinemia, or "blue baby syndrome").
  3. Occurrence of a waterborne disease outbreak (e.g., Cryptosporidium or Giardia).
  4. Catastrophic loss of distribution system pressure below $20\text{ psi}$ across a pressure zone, creating severe back-siphonage contamination hazards.
  5. Failure to meet treatment technique performance standards for conventional filtration turbidity where the DEP determines acute health risks exist.
  6. Exceedance of the Maximum Residual Disinfectant Level (MRDL) for chlorine dioxide in the distribution system.
• Required Action & Timeframe:
  • The water supplier must contact the PA DEP Regional Office within $1\text{ hour}$.
  • The supplier must issue public notice as soon as possible, but no later than $24\text{ hours}$ after learning of the violation.
  • Delivery Methods: Automated telephone reverse-911 calling systems, emergency radio and television broadcast stations, hand delivery of written flyers to every customer door, and prominent website/social media publication.
  • Mandatory Directives: Must issue clear instructions, such as a Boil Water Advisory (rolling boil for 1 full minute) or a Do Not Drink / Do Not Use Order.

2. Tier 2 Public Notification: Potential Serious Health Effects (30 Days)

Tier 2 notices apply to violations with potential to cause adverse health effects, but where the risk is not acute or immediate:

• Tier 2 Trigger Conditions:
  1. Violations of Maximum Contaminant Levels (MCLs) for heavy metals (arsenic, mercury), organic chemicals (benzene, PFAS), or radionuclides.
  2. Treatment technique violations (e.g., failure to maintain required minimum disinfectant residual entering the distribution network [$\ge 0.20\text{ mg/L}$], or failure to achieve required CT disinfection inactivation ratios) that do not escalate to Tier 1.
  3. Failure to comply with the terms of an existing variance or administrative consent order.
• Required Action & Timeframe: Notice must be provided as soon as practicable, but within $30\text{ days}$ of learning of the violation, distributed via direct mail, customer utility bill inserts, local newspaper publication, and electronic delivery. Repeat notices must be issued every three months as long as the violation persists.

3. Tier 3 Public Notification: Operational & Monitoring Violations (1 Year)

Tier 3 notices apply to minor monitoring, administrative, and testing procedure omissions:

• Tier 3 Trigger Conditions:
  1. Failure to perform routine compliance monitoring or testing within statutory timeframes.
  2. Failure to submit required operational or laboratory reports by DEP deadlines.
  3. Operation under a formal conditional variance or exemption issued by the DEP.
• Required Action & Timeframe: Notice must be issued within $1\text{ year}$ of the infraction. Public water systems typically satisfy Tier 3 public notification requirements by publishing the notice within their annual Consumer Confidence Report (CCR), which must be delivered to all water customers by July 1 of each year.