Non-Compliance
Clean Water Act
RCRA
TOBIN MONTESSORI AND VASSAL LANE UPPER SCHOOLS
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
-
197 VASSAL LN
CAMBRIDGE, MA 02139
View on map ↗ - County
- MIDDLESEX County
- Industry
- Administrative and Support and Waste Management
- NAICS (North American Industry Classification)
- 562910
- Total Penalties
- $0
- Registry ID
- 110070862965
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.
12
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
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 dissolved [TDS] | DMR, Limited - Numeric Violation | 1,600.00 mg/L | 500.00 | +220% | Feb 2026 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Feb 2026 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 921.00 mg/L | 230.00 | +300% | Feb 2026 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +200% | Feb 2026 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 921.00 mg/L | 860.00 | +7% | Feb 2026 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Jan 2026 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 473.00 mg/L | 230.00 | +106% | Jan 2026 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +173% | Jan 2026 | Open |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 850.00 mg/L | 500.00 | +70% | Jan 2026 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +85% | Dec 2025 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +109% | Dec 2025 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +19% | Dec 2025 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 256.00 mg/L | 230.00 | +11% | Dec 2025 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +34% | Dec 2025 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +19% | Nov 2025 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Nov 2025 | Open |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 600.00 mg/L | 500.00 | +20% | Nov 2025 | Resolved |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +121% | Nov 2025 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +85% | Nov 2025 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +4% | Oct 2025 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +125% | Oct 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 590.00 mg/L | 500.00 | +18% | Oct 2025 | Resolved |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 273.00 mg/L | 230.00 | +19% | Oct 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.80 mg/L | 0.10 | +700% | Oct 2025 | Open |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 600.00 mg/L | 500.00 | +20% | Sep 2025 | Resolved |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +52% | Sep 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 650.00 mg/L | 500.00 | +30% | Aug 2025 | Resolved |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +10% | Aug 2025 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Aug 2025 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 236.00 mg/L | 230.00 | +3% | Aug 2025 | Resolved |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +10% | Jul 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 650.00 mg/L | 500.00 | +30% | Jul 2025 | Resolved |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 278.00 mg/L | 230.00 | +21% | Jul 2025 | Resolved |
| Lead, total recoverable | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +19% | Jun 2025 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 282.00 mg/L | 230.00 | +23% | Jun 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 700.00 mg/L | 500.00 | +40% | Jun 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.20 mg/L | 0.10 | +100% | Jun 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.20 mg/L | 0.10 | +100% | May 2025 | Open |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 660.00 mg/L | 500.00 | +32% | May 2025 | Resolved |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 260.00 mg/L | 230.00 | +13% | May 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 720.00 mg/L | 500.00 | +44% | Apr 2025 | Resolved |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 302.00 mg/L | 230.00 | +31% | Apr 2025 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Apr 2025 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Mar 2025 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 354.00 mg/L | 230.00 | +54% | Mar 2025 | Resolved |
| Solids, total dissolved [TDS] | DMR, Limited - Numeric Violation | 770.00 mg/L | 500.00 | +54% | Mar 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.20 mg/L | 0.10 | +100% | Mar 2025 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +17% | Mar 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.60 mg/L | 0.10 | +500% | Feb 2025 | Open |
| Chloride, total recoverable | DMR, Limited - Numeric Violation | 474.00 mg/L | 230.00 | +106% | Feb 2025 | Resolved |
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