Non-Compliance
Clean Water Act
MATTINGLY MINE
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
23135 CEDAR LANE ROAD
LEONARDTOWN, MD 20657
View on map ↗ - County
- ST. MARY'S County
- Total Penalties
- $0
- Registry ID
- 110070215880
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
8
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 70.00 mg/L | 30.00 | +133% | Mar 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 70.00 mg/L | 60.00 | +17% | Mar 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 74.00 mg/L | 60.00 | +23% | Oct 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 74.00 mg/L | 30.00 | +147% | Oct 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 81.00 mg/L | 30.00 | +170% | Sep 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 81.00 mg/L | 60.00 | +35% | Sep 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 55.00 mg/L | 30.00 | +83% | Apr 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 108.00 mg/L | 60.00 | +80% | Jan 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 108.00 mg/L | 30.00 | +260% | Jan 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 41.00 mg/L | 30.00 | +37% | Apr 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 71.00 mg/L | 30.00 | +137% | Mar 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 71.00 mg/L | 60.00 | +18% | Mar 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 69.00 mg/L | 30.00 | +130% | Feb 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 69.00 mg/L | 60.00 | +15% | Feb 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 104.00 mg/L | 60.00 | +73% | Dec 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 104.00 mg/L | 30.00 | +247% | Dec 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 30.00 | +113% | Sep 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 60.00 | +7% | Sep 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 79.00 mg/L | 60.00 | +32% | Aug 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 79.00 mg/L | 30.00 | +163% | Aug 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 37.00 mg/L | 30.00 | +23% | Apr 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 39.00 mg/L | 30.00 | +30% | Feb 2020 | Open |
| Temp. difference, summer [deg. F] | DMR, Limited - Numeric Violation | 86.00 deg F | 0.00 | +2,147,483,650% | Jun 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 95.00 mg/L | 30.00 | +217% | Jun 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 95.00 mg/L | 60.00 | +58% | Jun 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 36.00 mg/L | 30.00 | +20% | May 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 30.00 | +53% | Apr 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 92.00 mg/L | 30.00 | +207% | Feb 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 92.00 mg/L | 60.00 | +53% | Feb 2019 | Resolved |
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