| 5/27/2020 | 5/22/2020 | Bend | Genesis Acquisition Company Inc. dba Northland Furniture Company | $3,000 | Land | Improper and prolonged storage of hazardous waste | Human Health, Transparency and Accountability |
| 5/27/2020 | 5/15/2020 | Sherwood | Rogers Northwest, Inc. | $16,800 | Air | Emitting more pollution than allowed in air quality permit | Human Health |
| 5/26/2020 | 5/22/2020 | Troutdale | Corpac Construction Company | $26,400 | Air | Conducting unlicensed asbestos abatement, openly storing asbestos material | Human Health, Transparency and Accountability |
| 5/26/2020 | 5/15/2020 | Portland | J's General Contractor | $32,000 | Air | Conducting unlicensed asbestos abatement, openly storing asbestos material | Human Health, Transparency and Accountability |
| 5/26/2020 | 5/15/2020 | Portland | Start LLC | $30,400 | Air | Conducting unlicensed asbestos abatement, openly storing asbestos material | Human Health |
| 5/18/2020 | 5/15/2020 | Portland | Container Management Services, LLC | $59,213 | Land | Operating solid and hazardous waste facilities without permits | Human Health, Transparency and Accountability |
| 5/18/2020 | 5/15/2020 | Portland | Ultimate RB Inc. | $12,125 | Water | Failing to monitor stormwater for pollutants | Fish and Aquatic Life |
| 5/13/2020 | 5/8/2020 | Tillamook | S-C Paving Company | $6,800 | Air | Failing to demonstrate compliance with air permit requirements. | Human Health, Transparency and Accountability |
| 5/12/2020 | 5/8/2020 | John Day | Ochoco Lumber Company | $2,400 | Air | Emitting more pollution than allowed in air quality permit | Human Health |
| 5/12/2020 | 5/8/2020 | Tillamook | Regenis | $17,250 | Land | Discharging partially-treated manure from compost digester into nearby creek | Fish and Aquatic Life, Human Health, Wildlife |
| 5/12/2020 | 5/8/2020 | Tillamook | Tillamook Biogas LLC | $26,700 | Land | Discharging partially-treated manure from compost digester into nearby creek | Fish and Aquatic Life, Human Health, Wildlife |
| 5/11/2020 | 5/8/2020 | Cornelius | Columbia Northwest Recycling, Inc., dba Construction Materials Recycling | $611,403 | Land | Establishing and operating a solid waste disposal site without a permit | Human Health, Wildlife |
| 5/11/2020 | 5/8/2020 | Tillamook | Port of Tillamook Bay | $19,800 | Land | Discharging partially-treated manure from compost digester into nearby creek | Fish and Aquatic Life, Human Health, Wildlife |
| 5/11/2020 | 5/8/2020 | Coos Bay | Red Moon Development & Construction Inc. | $27,459 | Water | Discharging sediment pollution from construction site into nearby creek | Fish and Aquatic Life |
| 5/11/2020 | 5/8/2020 | Molalla | Sulussolar35, LLC | $4,800 | Water | Failing to implement erosion and sediment control plan at construction site. | Fish and Aquatic Life, Transparency and Accountability |
| 5/11/2020 | 5/8/2020 | Clackamas | Wilbur-Ellis Feed LLC | $14,053 | Water | Failing to monitor stormwater for pollutants and implement pollution control plan | Fish and Aquatic Life, Transparency and Accountability |
| 5/11/2020 | 5/1/2020 | Salem | Willamette Graystone, LLC | $6,800 | Water | Failing to monitor stormwater for pollutants | Fish and Aquatic Life, Transparency and Accountability |
| 5/5/2020 | 5/1/2020 | Heppner | City of Heppner | $3,150 | Water | Failing to collect water quality monitoring data, discharging more pollution than allowed in wastewater permit | Fish and Aquatic Life, Transparency and Accountability |
| 5/4/2020 | 5/1/2020 | Portland | Westrock CP LLC | $11,478 | Water | Failing to monitor stormwater for pollutants | Fish and Aquatic Life, Transparency and Accountability |
| 5/4/2020 | 4/24/2020 | Oregon City | Forest Park MHP LLC | $975 | Water | Discharging more pollution than is allowed in wastewater permit | Fish and Aquatic Life |
| 4/29/2020 | 4/24/2020 | Coos Bay | Repplinger, Donald | $1,800 | Air | Open burning of illegal materials that pose a threat to the environment and public health. | Human Health, Wildlife |
| 4/27/2020 | 4/24/2020 | Portland | Crowley Marine Services | $14,400 | Water | Discharging improperly treated ballast water into the Columbia River under a weather-related safety exemption without prior authorization from DEQ. | Fish and Aquatic Life, Transparency and Accountability |
| 4/27/2020 | 4/24/2020 | Coquille | Roseburg Forest Products Co. | $22,800 | Air | Exceedance of the facility's opacity limit in its Title V air quality permit. | Human Health |
| 4/27/2020 | 4/24/2020 | Portland | Space Age Fuel, Inc. | $66,000 | Land | Spilling between 1,541 and 2,861 gallons of diesel fuel into Linsay Lake when a tanker truck crashed on Interstate 84. | Fish and Aquatic Life, Human Health, Wildlife |
| 4/27/2020 | 4/24/2020 | Keizer | Singh, Daljit dba Keizer Food Market | $3,000 | Land | Continued operation of underground storage tanks while operating certificate had been revoked following previous non-compliance. | Transparency and Accountability |
| 4/27/2020 | 4/17/2020 | St. Helens | Wilcox and Flegel Fuel Oil Co | $8,000 | Water | Failure to perform proper stormwater monitoring in compliance with the stormwater permit. | Fish and Aquatic Life, Transparency and Accountability |
| 4/24/2020 | 4/17/2020 | Estacada | Cascadia Ridge, LLC | $85,410 | Water | Failure to obtain a water quality permit for construction activities. | Fish and Aquatic Life, Transparency and Accountability |
| 4/20/2020 | 4/17/2020 | Portland | Ash Grove Cement | $13,800 | Water | Discharge to the Willamette River. | Fish and Aquatic Life, Wildlife |
| 4/20/2020 | 4/17/2020 | Estacada | I & E Construction, Inc. | $108,210 | Water | Failure to obtain a water quality permit for construction activities, violation of water quality standards, and submitting in accurate and incomplete information to DEQ. | Fish and Aquatic Life, Transparency and Accountability |
| 3/21/2020 | 3/19/2020 | Portland | Owens-Brockway Glass Container, Inc. | $15,600 | Air | Exceeding air pollution limit, failing to submit paperwork timely. | Human Health |