Environmental Compliance Calendar: Every Deadline You Cannot Miss
Most environmental penalties come from missed deadlines, not from active misconduct. A facility that passes every EPA inspection can still rack up six-figure fines by blowing past a Tier II deadline, missing a Toxic Release Inventory submission, or letting a Title V certification slip. Deadline failures show up in EPA's ECHO database (echo.epa.gov) and state enforcement registries the same way release violations do, but they are completely preventable with a working calendar.
This guide lays out every major federal environmental compliance deadline by month, plus the state-level triggers most facilities ignore until an inspector asks for the record. Use it as a starting framework and customize based on the specific permits, waste generator categories, and state programs that apply to your facility.
January
Annual SPCC Plan Review (40 CFR 112.5). Facilities with an active Spill Prevention, Control, and Countermeasure plan under 40 CFR Part 112 must review the plan at least once every five years, but most plans require annual review at a minimum, especially when staff, equipment, or storage have changed. The plan must be amended within six months of any material change to facility design, construction, operation, or maintenance that affects discharge potential. PE certification under 40 CFR 112.3(d) is required for non-qualified facilities (capacities greater than 10,000 gallons aggregate aboveground petroleum storage). The reviewing official documents the review in the plan log with date and signature.
CERCLA/EPCRA Continuous Release Reports (40 CFR 302.8(g)). Facilities reporting continuous releases under CERCLA Section 103(f) must submit a follow-up notification within 30 days of any change in the source, composition, or release rate, plus an annual evaluation report.
Air Permit Year-Begin Calibrations. Many state air permits require annual calibration of continuous emission monitoring systems (CEMS) and other air monitoring equipment per 40 CFR Part 60 Appendix F or Part 75. Schedule before first quarter reports are due.
February
Tier II Preparation (EPCRA Section 312). Tier II Emergency and Hazardous Chemical Inventory reports are due by March 1 (40 CFR 370.45). February is when facility EHS teams compile chemical inventories, gather SDS for every reportable substance, verify facility data, and reconcile with the previous year's submission. Reporting thresholds are 10,000 pounds for non-Extremely Hazardous Substances (non-EHS) and 500 pounds (or the threshold planning quantity, whichever is lower) for EHS chemicals listed at 40 CFR Part 355 Appendix A.
TSCA Chemical Data Reporting (CDR) preparation in CDR years. Every four years, manufacturers and importers of TSCA-listed chemicals must submit CDR reports under 40 CFR Part 711. The reporting cycle covers the prior four calendar years, and the next submission window opens June 1 of the report year. The 2024 CDR cycle covered 2020 to 2023 with reports due by November 30, 2024; the next major cycle is 2028.
Biennial RCRA Hazardous Waste Report (40 CFR 262.41). In even-numbered years (2026, 2028), large quantity generators and TSDFs must submit a biennial report covering the prior two calendar years of waste activity. Report due to the state RCRA authority by March 1. February is the last month to compile manifest data, container counts, waste codes, and generator quantity verification.
March
Tier II Due March 1 (EPCRA Section 312, 40 CFR 370.45). Reports must be submitted to three recipients: the State Emergency Response Commission (SERC), the Local Emergency Planning Committee (LEPC), and the local fire department with jurisdiction over the facility. Many states use Tier II Submit or a state-equivalent online portal. EPCRA Section 325(c) authorizes civil penalties for Section 312 reporting violations, with maximum amounts set at 40 CFR 19.4 Table 1 (adjusted annually for inflation).
Biennial Hazardous Waste Report Due March 1 (40 CFR 262.41, even years). LQGs and TSDFs submit the Biennial Report to the state RCRA authority. The report includes generator identification, waste generation by EPA waste code, waste shipments (manifests), and treatment, storage, or disposal activity. Most states require electronic submission through RCRAInfo or a state portal.
Annual Title V Compliance Certifications (40 CFR 70.6(c)(5)). Major sources of air pollutants with a Title V permit must submit an annual compliance certification confirming compliance with all permit terms for the prior calendar year. Submitted to EPA and the state air permitting authority. Knowingly false certifications carry criminal liability under Clean Air Act Section 113.
Annual Stormwater Report. Many state-issued industrial stormwater general permits and the federal MSGP require annual reports summarizing the prior year's monitoring, inspections, and corrective actions. State deadlines vary; California's IGP, for example, requires annual reports by July 15 covering the prior wet season.
April
First Quarter Stormwater Visual Monitoring. Quarterly visual monitoring under the MSGP Part 4.1.1 or state equivalent. The visual assessment documents color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen, and other indicators of pollutants. Documentation is kept with the SWPPP and produced on request.
Quarterly benchmark stormwater sampling. Sectors required to sample under the MSGP collect a Q1 sample during a qualifying storm event (typically at least 0.1 inches of measurable rainfall after 72 hours dry). The first 30 minutes of measurable discharge is the target sampling window.
Q1 Air Emission Inventory data collection. Facilities with quarterly air emissions reporting compile fuel use, throughput, and emission factor inputs for the prior quarter. State systems vary (Texas TCEQ STEERS, California CARB, etc.).
Section 608 refrigerant leak inspection. Owners and operators of appliances containing 50 or more pounds of refrigerant subject to 40 CFR Part 82 Subpart F must conduct leak inspections at intervals specified by leak rate history (quarterly, annually, or as triggered by leak rate exceedance).
May
Tier II inventory change reporting (40 CFR 370.40). Material changes to chemical inventories must be reported to the SERC, LEPC, and fire department within three months. May is a good mid-year checkpoint to verify the Tier II on file matches what the facility actually has on site.
Q2 stormwater sampling preparation. Quarterly monitoring under the MSGP requires Q2 sampling to occur between April and June. Pre-stage sample bottles, verify lab availability, and ensure the designated sampler is on call for forecasted qualifying events.
EPCRA Section 304 release reporting follow-ups. Any unplanned release of an Extremely Hazardous Substance (EHS) above its reportable quantity (RQ) requires immediate notification to the LEPC and SERC. A written follow-up report under 40 CFR 355.40(b)(3) is required as soon as practicable but typically within 30 days, summarizing the incident, response actions, and exposure information.
June
Annual RCRA Subtitle C Inspection Readiness. State RCRA programs commonly conduct inspections in summer. Use June to verify container labels and dates per 40 CFR 262.16(b)(6) (SQGs) and 40 CFR 262.17(a)(5) (LQGs), aisle space per 40 CFR 264.35, emergency equipment per 40 CFR 264.32, contingency plan currency per 40 CFR 262.260, and training records per 40 CFR 262.17(a)(7) (LQGs) or 40 CFR 262.16(b)(9) (SQGs).
Air Permit Semi-Annual Deviation Reports (40 CFR 70.6(a)(3)(iii)). Title V facilities on the typical January-June semi-annual reporting cycle must submit deviation reports identifying every permit deviation that occurred in the first six months of the year. Report due to the state air permitting authority.
TSCA CDR submission window opens (CDR years). The four-year CDR reporting window opens June 1 with reports due November 30 in the report year.
July
TRI Form R Due July 1 (EPCRA Section 313, 40 CFR 372.30). Toxic Release Inventory reports are due for the prior calendar year. Applies to facilities in covered industrial sectors with 10 or more full-time equivalent employees that manufacture, process, or use listed toxic chemicals above thresholds (25,000 lb manufactured/processed; 10,000 lb otherwise used; lower thresholds for persistent bioaccumulative toxics under 40 CFR 372.28). EPA's TRI Reporting Forms and Instructions provide the full chemical list and threshold table. Reports are submitted electronically through TRI-MEweb.
Second Quarter Stormwater Visual Monitoring completion. Document the Q2 visual assessment in the SWPPP records.
Mid-Year Financial Assurance Update. Facilities required to maintain financial assurance under 40 CFR 264 Subpart H (TSDFs) or 40 CFR 280 Subpart H (UST owners) must verify that mechanisms (trust fund, surety bond, letter of credit, insurance, or equivalent) remain in force and current.
August
Air Permit Semi-Annual Reports for January-July reporting cycles. Some Title V permits use a July 1 to December 31 second-half cycle (vs. January to June first-half), with second-half reports due in early August for January-July monitoring data.
Hurricane and severe weather pre-positioning (Aug to Oct peak). Verify emergency response plans, confirm SPCC emergency contact lists, test alarms and spill equipment, and inspect secondary containment for damage from previous storms. For coastal and gulf facilities, this is the last predictable window before hurricane operations.
Q3 stormwater sampling preparation. Q3 sampling under the MSGP must occur between July and September. Late summer storms are often the easiest to predict and collect.
HMM/HMC permit annual reports. Hazardous materials management or hazardous materials business plan reports required by certain state and local programs (California's CERS, New York Right-to-Know, etc.) often have late summer deadlines tracking the federal Tier II cycle.
September
Q3 Stormwater Visual Monitoring and Sampling complete. Documentation closes out Q3 stormwater obligations.
FY-end preparation for federal facilities. Federal facilities operating on the October 1 fiscal year complete year-end environmental reporting, equipment inventory verification, and budget closeout for environmental programs.
EPCRA chemical inventory mid-cycle audit. Walk the facility, compare physical inventory to Tier II submissions, and identify chemicals approaching thresholds. This audit catches changes that would otherwise surface during February Tier II prep when it is too late to fix the record.
October
RCRA Corrective Action progress reports. Facilities in active RCRA corrective action under 40 CFR 264.101 commonly have semi-annual or quarterly progress reports due to the state RCRA authority. Reports cover monitoring data, remedial progress, and milestone status.
NPDES Annual Report prep. Facilities on calendar-year reporting cycles begin year-end Discharge Monitoring Report and annual report compilation. Annual reports under the MSGP are due by the annual report deadline specified in the permit.
Stormwater Annual Comprehensive Site Evaluation. The MSGP requires an annual on-site evaluation of all stormwater controls documented in writing. Late fall is a common scheduling window, providing time to make corrective actions before year-end.
November
Winterization checks. Drain outdoor piping that does not have heat tracing, inspect secondary containment for leaks or damage that could be hidden by snow, verify that snow melt and frozen-line failures will not contaminate product storage areas. Document the winterization checklist in the SPCC plan inspection log.
Q4 stormwater visual monitoring and sampling planning. Q4 sampling under the MSGP must occur between October and December. In cold-climate states, qualifying storm events become less frequent in late fall, making documentation of attempts more important than usual.
TSCA CDR reports due November 30 (CDR years). Manufacturers and importers covered under 40 CFR Part 711 submit through EPA's Central Data Exchange (CDX).
December
Year-end waste reconciliation. Verify manifest data matches internal waste tracking. Reconcile container counts in satellite accumulation areas and central accumulation areas with manifests and disposal records. Gaps found in December are easier to explain than gaps found during inspection.
Annual fire extinguisher, eyewash, and safety shower certifications. NFPA 10 (fire extinguishers) and ANSI Z358.1 (eyewash and safety showers) require annual inspections by qualified personnel. These are not federal environmental requirements directly but are routinely cited during EPA and OSHA inspections under 40 CFR 264.32 (TSDF emergency equipment) and 29 CFR 1910.151 (medical and first aid).
Next-year Tier II data compilation start. Begin pulling chemical inventory data for the year ending December 31, so February prep is verification rather than discovery.
SPCC plan annual review checkpoint. If the annual SPCC review has not yet been completed, December is the last window before the calendar resets. Document the review with PE certification if required.
Ongoing Requirements (Not Date-Driven)
Not all compliance is calendar-driven. The requirements below run continuously and missing any single instance is a separate citable violation.
Weekly RCRA inspections (40 CFR 262.17(a)(1)(v) for LQGs, 40 CFR 264.174 for TSDFs). LQGs must inspect container accumulation areas weekly. The inspection must document container condition, label integrity, secondary containment status, and emergency equipment availability. Missing a single week is a documented finding.
Monthly SPCC inspections (40 CFR 112.7(e)). Tank integrity, secondary containment, valves and piping, drainage controls. The plan must specify the inspection schedule; monthly is the most common practice for bulk storage operations. Documentation kept with the SPCC plan.
Container labeling requirements. Hazardous waste containers must be labeled with the start of accumulation date (40 CFR 262.17(a)(5) for LQGs, 40 CFR 262.16(b)(6) for SQGs), the words "Hazardous Waste", and an indication of the hazards of the contents. Universal waste containers must be labeled "Universal Waste" (40 CFR 273.34). Used oil containers must be labeled "Used Oil" (40 CFR 279.22(c)).
Spill reporting (CERCLA RQ, EPCRA RQ, state RQ). Any release of a CERCLA hazardous substance at or above its reportable quantity (40 CFR 302.4) triggers National Response Center notification within 24 hours (800-424-8802). EPCRA Section 304 releases of Extremely Hazardous Substances require immediate notification to the LEPC and SERC. State RQs are often lower and require notification within shorter windows (1 to 6 hours common). The SpillNerd RQ Calculator covers federal CERCLA substances.
Manifest tracking (40 CFR 262.20). Hazardous waste manifests must be initiated by the generator for every shipment of hazardous waste. The generator retains a copy and receives the signed final copy from the designated facility within 35 days. If not received within 45 days, the generator must file an exception report.
Training (40 CFR 262.17(a)(7) for LQGs, 40 CFR 262.16(b)(9) for SQGs). Personnel handling hazardous waste must receive initial training and annual refresher training. Documentation includes training content, attendance, and dates.
Building a Compliance Calendar System
A working compliance calendar has three structural elements that distinguish it from a list of dates in a binder.
First, a master list of every applicable deadline. Build the list from the actual permits, plans, and generator categorizations that apply to the facility. Do not rely on a generic template; templates miss site-specific deadlines (state Tier I/II differences, specific permit conditions, RCRA corrective action milestones). Start with every permit's required reports, every plan's review cycles, and every regulation's reporting obligations that apply.
Second, owner assignments with documented backups. Every deadline must have a primary owner with a name (not a title), a backup, and an escalation path if both are unavailable. Calendar entries that are owned by "EHS" or "facility" are owned by nobody when the deadline arrives.
Third, reminders set sufficiently early to actually act. A reminder one week before a March 1 deadline is too late if the Tier II data has not been compiled. The system should reflect actual lead times: 30 days for routine reports, 60 to 90 days for reports requiring lab data, six months for plan recertifications requiring PE involvement, and ongoing for daily and weekly checks.
Software solutions span free options (Google Calendar, Outlook recurring tasks, Notion) and enterprise platforms (Intelex, Cority, Enablon, EHS Insight). The tool matters less than the discipline of keeping it current. A beautiful calendar that has not been updated in two years is worse than a basic spreadsheet that the EHS lead opens every Monday morning.
One pattern that works well across facility sizes: a weekly Monday morning compliance huddle, 15 minutes, where the EHS lead reviews the next 30 days of deadlines with operations and identifies any that need action that week. This is mundane infrastructure, not flashy, but it is the single most effective way to catch deadlines before they slip.
Need help with specific compliance programs? Read our guides on SPCC plans, stormwater sampling, and RCRA storage requirements. For penalty ranges by state, use the penalties lookup. For CERCLA reportable quantity thresholds by chemical, use the RQ Calculator.