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EPA Compliance Audit Services
EPA audits identify compliance gaps before an inspector walks in. Cover air emissions (Title V, CAA), wastewater discharge (NPDES, pretreatment), hazardous waste (RCRA), stormwater (MSGP), chemical inventory (Tier II, TRI, TSCA, PFAS), and permit compliance simultaneously across EPA and state requirements. Discover violations voluntarily under the EPA Audit Policy protection framework — reducing or eliminating penalties entirely.
What an EPA Compliance Audit Covers
EPA compliance extends across all environmental media and federal statutes. iSi audits verify compliance simultaneously across every area where EPA enforcement occurs.
Air Emissions & Title V Permits
Permitted and potential emission sources, NESHAP applicability, MACT standards, operational limits, compliance monitoring, continuous emissions monitoring (CEM) verification, and Title V permit compliance. CAA standard basis validation.
Wastewater & NPDES Discharge
NPDES permit compliance, effluent monitoring accuracy, outfall characterization, pretreatment program participation, industrial wastewater treatment system performance, permit limit violations, and discharge monitoring report (DMR) verification.
Hazardous Waste & RCRA
Generator classification (LQG/SQG/VSQG), cradle-to-grave waste tracking, hazardous waste characterization accuracy, manifest completion, storage time limits, container management, accumulation area compliance. Verify generator status alignment.
Stormwater & MSGP Compliance
Industrial Stormwater Pollution Prevention Plan (SWPPP) review against current site conditions, benchmark monitoring verification, visual inspection documentation, NOI/NOT status, and corrective action tracking under MSGP industrial stormwater permit.
Chemical Inventory & Tier II Reporting
EPCRA Tier II accuracy verified through physical inventory reconciliation, chemical storage location mapping, hazard classification alignment, TRI reporting confirmation, SARA 313 applicability, and TSCA compliance. Verify chemical inventory matches facility report — audit the audit.
PFAS, HazCom, & Emerging Regs
PFAS reporting obligations, TSCA chemical risk evaluation compliance, HazCom 2024 label updates, SPCC/FRP preparation requirements, state-specific emerging regulations. EPA continuously expands chemical notification and reporting—audits identify gaps in new rules before enforcement targets them.
The EPA Audit Policy: Voluntary Self-Disclosure Reduces or Waives Penalties
Many facilities discover violations during an audit. The EPA Audit Policy is a formal path to disclose violations voluntarily, correct them, and eliminate or dramatically reduce penalty exposure. This is the long-tail value of proactive auditing.
The Core Eligibility Framework
Your facility qualifies for EPA Audit Policy protection if: (1) you have NO prior federal enforcement action in the past five years, (2) you had NO advance knowledge of the violation before your internal audit discovered it, (3) the violation is not related to a federal inspection, and (4) you correct the violation and disclose it in writing within 21 days of discovery.
Once a qualifying violation is disclosed, you have 60 days to achieve full compliance. EPA provides penalty relief on gravity-based penalties — typically 75% reduction or full waiver, depending on the violation severity.
The Penalty Math
EPA RCRA violations: up to $93,058 per day of violation. Air (CAA) violations: $93,058+ per day. Water (CWA) violations: $50,000–$93,058 per day.
A facility disclosing a 30-day RCRA violation under Audit Policy without qualifying protection would face ~$2.8 million in penalty exposure. With EPA Audit Policy protection and a 75% gravity-based reduction, the same violation can result in substantially lower penalties or a waiver, depending on case-specific factors and corrective action timing.
The difference: one proactive audit.
Three Near-Miss Scenarios — Caught Proactively via EPA Audit
These gaps are invisible until an audit. Each scenario represents six figures in avoided penalty exposure and years of reduced inspection frequency.
Tier II Under-Reporting Discovered Pre-Inspection
Facility files Tier II annually, but a physical inventory audit reveals chemical quantities that exceed what was reported to the state. The discrepancy spans three years. Operating with inaccurate Tier II is an EPCRA violation subject to enforcement.
An EPA audit discovers this before an inspector does. Facility voluntarily corrects and re-files Tier II under EPA Audit Policy protection. State receives corrected data. Penalty exposure eliminated.
Without policy protection: $25,000–$75,000 in EPCRA penalties + corrected filing + repeat inspection risk.
Unpermitted Air Source Discovered During M&A Audit
Facility acquired new equipment during an operational shift. Air emissions increased, but no Title V permit modification was filed. The facility is now operating an unpermitted emission source — an air permit violation. Risk passes to the new owner if M&A closes without audit discovery.
Pre-close audit identifies the unpermitted source. Buyer requires permit modification before acquisition completes. Seller corrects under EPA Audit Policy. M&A closes without regulatory liability transfer.
Without pre-close audit: $93,058+ per day of operation (Title V violation) + post-close indemnification claims.
RCRA Accumulation Violation Self-Disclosed Under Audit Policy with Full Penalty Waiver
Facility generates hazardous waste and self-identifies as a Small Quantity Generator (SQG). Waste is stored on-site but has exceeded the 180-day accumulation limit in two separate waste streams — a RCRA violation. No EPA inspection yet.
EPA audit discovers the accumulation violations. Facility immediately removes non-compliant waste (emergency disposal or off-site transfer), corrects storage procedures, and discloses the violation under EPA Audit Policy. Violation is corrected within 60 days. Penalty: waived due to immediate correction + policy protection.
Without policy protection: $93,058 × (number of days in violation). With proactive audit + policy disclosure: potential zero penalty.
Common Triggers for EPA Compliance Audits
- Anticipated EPA Inspection: Facility has received notice of an upcoming routine compliance evaluation or complaint-driven inspection.
- Post-NOV Response: EPA issued a Notice of Violation. Audit confirms whether corrective actions address the underlying violation or reveal broader exposure.
- M&A Due Diligence: Buyer or seller wants regulatory liability assessment before transaction closes. Environmental audit anchors purchase price adjustment and indemnification terms.
- Ownership or Operational Change: New owner, new operator, or major facility change triggers compliance reassessment. Old assumptions about permits or classification no longer hold.
- New Regulation (PFAS, TSCA, HazCom 2024): EPA publishes new requirements. Facility audits verify compliance readiness before enforcement targets non-compliance.
- Permit Renewal Cycle: Air (Title V) or water (NPDES) permit renewal approaching. Audit confirms facility compliance before permit reissuance.
- Routine Risk Management: Responsible manufacturers and multi-site operators audit every 12–24 months as a programmatic control. Prevention is cheaper than remediation.
We Plug In. You Level Up.
The audit identifies the gaps. iSi helps you plug them — and then makes sure they don't come back.
Most facilities discover violations during an EPA audit and need support managing the corrective action plan, EPA Audit Policy disclosure, or compliance order response. iSi doesn't hand off after the audit. We support the correction: SEP negotiation, consent agreement response, corrective action implementation oversight, and post-audit compliance assurance through a COOP retainer.
An EPA audit is the realization moment. The corrective action and prevention strategy are the sustained partnership.
EPA Audit Cost vs. Penalty Exposure
EPA penalties reach $93,058 per day of violation. A comprehensive EPA audit identifying gaps before enforcement costs a fraction of a single penalty day. Mid-range audits run $7,500–$15,000. Even at the high end, one day of EPA enforcement exceeds the audit cost 6–12×. After enforcement, expect legal fees ($25,000–$75,000), increased inspection frequency for 3–5 years, and insurance premium increases. Prevention is exponentially cheaper than remediation.
What You Get: The EPA Compliance Audit Report
Every EPA audit project delivers a complete report — not a checklist. The report is organized for operations leaders and facility managers.
- Complete findings across all environmental media (air, water, waste, stormwater)
- Specific EPA regulatory citations for every finding (e.g., 40 CFR 63.2, CAA Section 112, RCRA Subpart C)
- Potential consequence and penalty exposure of each gap — quantified in dollars
- EPA Audit Policy eligibility assessment and disclosure strategy (if applicable)
- Priority ranking by compliance deadline and regulatory severity
- Estimated remediation cost and timeline for each finding
- Detailed corrective action plan with responsible party, due date, and verification method
- Post-audit compliance monitoring roadmap for the next 12 months
Reports are written for people who know the work — clear findings, prioritized recommendations, and EPA compliance context. No padding. No filler. Your team reads it once and knows exactly what to do and why it matters.
EPA Compliance Audit Fast-Track
Need an EPA audit? Fill out the form below and we'll provide a detailed scope and fixed price. Most facilities need results within 2–4 weeks to meet an upcoming inspection, post-NOV response, or M&A deadline.
Request a Quote
Same-day response on industrial hygiene assessments. Most requests quoted within 30 minutes.
EPA Compliance Audit Questions
What is the EPA Audit Policy and who qualifies?
The EPA's Incentives for Self-Policing rule (EPA Audit Policy) provides enforcement discretion and penalty relief for facilities that voluntarily discover and disclose environmental violations through an internal audit. To qualify: no prior federal enforcement action in the past five years; no advance knowledge of the violation; achieve compliance within 60 days of disclosure; and meet other eligibility criteria. A qualifying disclosure can reduce gravity-based penalties by 75% or waive them entirely — potentially worth hundreds of thousands of dollars.
What triggers the need for an EPA compliance audit?
EPA audits are triggered by: anticipated inspections, post-NOV (Notice of Violation) response, M&A due diligence, ownership or operational changes, new regulations (PFAS, TSCA, HazCom 2024), permit renewal cycles, or routine risk management. Many facilities audit proactively before an inspector appears — that's when gaps are discovered on your terms, not EPA's.
What is the difference between single-media and multi-media EPA audits?
A single-media audit focuses on one environmental area (air, water, waste, or stormwater). A multi-media audit covers all environmental media simultaneously: air emissions (Title V, CAA), wastewater discharge (NPDES), hazardous waste (RCRA), stormwater (MSGP), chemical inventory (Tier II, TRI, TSCA, PFAS), and regulatory record-keeping. Multi-media audits reveal compound compliance exposure that single-media audits miss — and are worth the additional cost because gaps often span multiple media.
How long does an EPA compliance audit take?
Typical EPA compliance audit timeline: 2–4 weeks from kickoff to draft report. Small single-media audits run 2 weeks. Large multi-site or multi-media audits run 4–6 weeks. The 60-day compliance window under EPA Audit Policy makes speed critical. Expedited audits are available for time-sensitive situations (pre-inspection, post-NOV response, M&A closing pressure).
What do I do if we discover a violation during the audit?
If an audit uncovers a violation and your facility qualifies for EPA Audit Policy protection, the violation can be voluntarily disclosed to EPA. Disclosure must occur within 21 days of discovery; compliance must be achieved within 60 days. iSi provides the audit documentation, self-disclosure letter, corrective action plan, and everything EPA requires for policy protection to apply. A qualifying disclosure can reduce penalties by 75% or eliminate them entirely.
What is the cost of an EPA compliance audit?
EPA compliance audits start at $4,200 for small single-location facilities with low complexity. Mid-range audits (multi-media, moderate complexity) run $7,500–$15,000. Complex multi-site or highly regulated facilities reach $20,000+. Cost depends on facility size, number of environmental permits, media scope, and regulatory complexity. EPA RCRA civil penalties average $93,058 per day of violation — a single penalty day far exceeds audit costs. The ROI math is immediate.
Related Compliance Services
EPA compliance interacts with broader EHS frameworks. After an EPA audit, you may need specialized support in environmental compliance programs, permitting, or post-NOV response.
EPA Audit Services Available in These Markets
EPA Enforcement Is Increasing. Your Audit Shouldn't Wait.
EPA compliance audits covering air, water, waste, stormwater, RCRA, Tier II reporting, and EPA Audit Policy self-disclosure. Discover gaps before EPA does. Proactive audits across 40 states.
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