Non-Compliance
Clean Water Act
HEIDLEBERG MATERIALS NE DOWNINGTOWN QUARRY
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
-
652 CLOVER MILL RD
EXTON, PA 19341
View on map ↗ - County
- CHESTER County
- Inspections
- 2 · last Nov 12, 2024
- Total Penalties
- $0
- Registry ID
- 110070050298
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.
11
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 |
|---|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.31 MGD | 4.00 | +8% | Dec 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.31 MGD | 4.00 | +8% | Dec 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 6.04 MGD | 4.00 | +51% | Jul 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 6.04 MGD | 4.00 | +51% | Jul 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 7.39 MGD | 4.00 | +85% | Jun 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 7.39 MGD | 4.00 | +85% | Jun 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 8.04 MGD | 4.00 | +101% | May 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 8.04 MGD | 4.00 | +101% | May 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 7.06 MGD | 4.00 | +76% | Apr 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 7.06 MGD | 4.00 | +76% | Apr 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 5.27 MGD | 4.00 | +32% | Mar 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 5.27 MGD | 4.00 | +32% | Mar 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.53 MGD | 4.00 | +13% | Feb 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.53 MGD | 4.00 | +13% | Feb 2025 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 5.67 MGD | 4.00 | +42% | Aug 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 5.67 MGD | 4.00 | +42% | Aug 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.26 MGD | 4.00 | +7% | Jul 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Overdue | 4.26 MGD | 4.00 | +7% | Jul 2024 | Resolved |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.26 MGD | 4.00 | +7% | Jul 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Overdue | 4.26 MGD | 4.00 | +7% | Jul 2024 | Resolved |
| Alkalinity - Acidity [as CaCO3] | DMR, Limited - Numeric Violation | -112.00 mg/L | 0.00 | +2,147,483,650% | Jun 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.56 MGD | 4.00 | +14% | Jun 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 4.56 MGD | 4.00 | +14% | Jun 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 6.38 MGD | 4.00 | +60% | May 2024 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 6.38 MGD | 4.00 | +60% | May 2024 | Open |
| Solids, total suspended | DMR, Limited - Overdue | 87.00 mg/L | 70.00 | +24% | Jul 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 87.00 mg/L | 70.00 | +24% | Jul 2022 | Open |
| Solids, total suspended | DMR, Limited - Overdue | 45.70 mg/L | 35.00 | +31% | Jul 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 45.70 mg/L | 35.00 | +31% | Jul 2022 | Open |
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