Non-Compliance
Clean Water Act
HAWKEN SCHOOL
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
-
12465 CO LINE RD
GATES MILLS, OH 44040
View on map ↗ - County
- CUYAHOGA County
- Inspections
- 1 · last Apr 14, 2025
- Total Penalties
- $0
- Registry ID
- 110006320953
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.
5
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Schedule Event achieved late but reported | Jun 1, 2004 | — | Open |
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 | 1.20 kg/d | 0.85 | +41% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.09 kg/d | 0.09 | +6% | May 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.09 kg/d | 0.06 | +58% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 17.00 mg/L | 12.00 | +42% | Jun 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.16 kg/d | 0.17 | +1,759% | Jan 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.23 mg/L | 4.50 | +661% | Jan 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.16 kg/d | 0.26 | +1,116% | Jan 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.23 mg/L | 3.00 | +1,041% | Jan 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 0.64 kg/d | 0.57 | +12% | Jan 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.40 mg/L | 1.50 | +193% | Oct 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.11 kg/d | 0.09 | +29% | Oct 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.30 mg/L | 1.00 | +130% | Oct 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.06 kg/d | 0.06 | +2% | Oct 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 291.00 MPN/100mL | 284.00 | +2% | Oct 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 600.00 MPN/100mL | 284.00 | +111% | Sep 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 16.00 mg/L | 12.00 | +33% | Oct 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.37 mg/L | 1.50 | +525% | Oct 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.10 mg/L | 1.00 | +310% | Oct 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.21 kg/d | 0.09 | +145% | Oct 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.09 kg/d | 0.06 | +59% | Oct 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,500.00 MPN/100mL | 362.00 | +314% | Jun 2017 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,200.00 MPN/100mL | 362.00 | +231% | Aug 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.14 kg/d | 0.06 | +139% | Sep 2015 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 11.33 mg/L | 1.50 | +655% | Sep 2015 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 300.00 MPN/100mL | 161.00 | +86% | Sep 2015 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.33 mg/L | 1.00 | +733% | Sep 2015 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.19 kg/d | 0.09 | +127% | Sep 2015 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 15.60 mg/L | 15.00 | +4% | Jun 2015 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 15.60 mg/L | 10.00 | +56% | Jun 2015 | Open |
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