EPA NSPS OOOO (Quad O) Compliance Calendar Software
EPA's New Source Performance Standards Subpart OOOO (40 CFR 60 Subpart OOOO), commonly known as "Quad O," established the first federal air emission standards specifically targeting the oil and natural gas industry. Finalized in 2012, NSPS OOOO regulates VOC emissions from well completions, pneumatic controllers, storage vessels, compressors, and equipment leaks at natural gas processing plants.
Our NSPS OOOO Compliance Calendar Software and mobile app tracks every LDAR survey, green completion requirement, monitoring obligation, annual report deadline, and recordkeeping requirement across all your affected facilities.
Regulated Equipment Categories
Gas Well Completions
Green completions required for hydraulically fractured and refractured gas wells to capture emissions using reduced emission completions (REC) practices.
Centrifugal Compressors
Wet seal centrifugal compressors must route emissions to a control device achieving 95% VOC reduction or use dry seals.
Reciprocating Compressors
Replace rod packing before or at 26,000 hours of operation or every 36 months, or route emissions to a process or control device.
Pneumatic Controllers
Continuous-bleed natural gas-driven controllers at processing plants must have a bleed rate of zero. At well sites, controllers must have a bleed rate ≤ 6 scfh.
Storage Vessels
Storage vessels with VOC emissions ≥ 6 tpy must reduce emissions by 95% using a control device such as a combustor or VRU.
Equipment Leaks (Processing Plants)
Natural gas processing plants must conduct LDAR per 40 CFR 60 Subpart VVa requirements for pumps, valves, connectors, and pressure relief devices.
Key NSPS OOOO Compliance Deadlines
LDAR Surveys (Processing Plants)
Conduct leak detection and repair surveys per Subpart VVa schedules. Frequency depends on component type and leak history: pumps monthly, valves quarterly or semi-annually, connectors annually.
Green Completion Documentation
Document reduced emission completion practices for each hydraulically fractured or refractured gas well, including flowback duration, gas capture volumes, and any venting or flaring.
Reciprocating Compressor Rod Packing
Replace rod packing before or at 26,000 hours of operation or every 36 months, whichever is reached first, unless routing to process or control device.
Pneumatic Controller Compliance
Verify new and replaced continuous-bleed controllers meet bleed rate limits: zero at processing plants, ≤ 6 scfh at well sites.
Storage Vessel Control Installation
Install and operate a control device achieving 95% VOC reduction within 60 days of startup for storage vessels exceeding the 6 tpy threshold.
Control Device Inspections
Inspect and maintain combustors, flares, VRUs, and other control devices to ensure proper operation. Document inspections and any corrective actions.
Initial Notification
Submit initial notification to EPA or delegated state agency within 60 days of initial startup of an affected facility.
Annual Report
Submit annual compliance report by March 31 for the preceding calendar year including well completion data, controller counts, storage vessel compliance, compressor records, and LDAR results.
Recordkeeping
Maintain records of all compliance activities, monitoring data, maintenance logs, and deviations for at least 5 years.
Leak Repair Verification
Repair leaks detected during LDAR surveys within 15 calendar days and conduct a follow-up monitoring to verify the repair.
Software Features for NSPS OOOO Compliance
LDAR Survey Scheduling
Schedule and track LDAR surveys by component type with automated reminders for quarterly, semi-annual, and annual frequencies.
Completion Tracking
Document green completion practices for each well with flowback data, gas capture volumes, and compliance verification.
Compressor Compliance
Track rod packing replacement schedules (36-month/26,000-hour) and wet seal compressor control device status.
Controller Inventory
Maintain inventory of pneumatic controllers with bleed rate classifications and compliance status.
Storage Vessel Monitoring
Track storage vessel emissions thresholds, control device installation, and inspection schedules.
Annual Report Generation
Compile data for the March 31 annual report from tracked compliance activities throughout the year.
Multi-Site Management
Track compliance across multiple well sites, compressor stations, and processing plants in a single platform.
Mobile App
Conduct LDAR surveys, document inspections, and manage compliance from the field with our mobile app.
