NPDES CO0020184 · Clean Water Act
SAN LAZARO MHP WWTF, Boulder County, CO: NPDES CO0020184 discharge permit, effluent exceedances, inspections, penalties
SAN LAZARO MHP WWTF, Boulder County, Colorado: Individual permit CO0020184, held by San Lazaro c/o 5005 Properties; Administratively continued; issued November 30, 2001, term to December 31, 2006; discharges to BOULDER CREEK.
- Flow, in conduit or thru treatment plant: 4 limits, 188 violations of any kind, 26 effluent exceedances, latest May 31, 2023, largest 136% over the limit.
- Coliform, fecal general: 4 limits, 11 violations of any kind, 11 effluent exceedances, latest May 31, 2010, largest 99,999% over the limit.
- Solids, suspended percent removal: 1 limit, 21 violations of any kind, 9 effluent exceedances, latest September 30, 2021, largest 151% over the limit.
- BOD, 5-day, percent removal: 1 limit, 15 violations of any kind, 3 effluent exceedances, latest April 30, 2003, largest 549% over the limit.
- E. coli, thermotol, MF, MTEC: 0 limits, 78 violations of any kind, 2 effluent exceedances, latest March 31, 2017, largest 769% over the limit.
- BOD, 5-day, 20 deg. C: 6 limits, 51 violations of any kind, 2 effluent exceedances, latest January 31, 2005, largest 47% over the limit.
- Solids, total suspended: 4 limits, 36 violations of any kind, 2 effluent exceedances, latest July 31, 2002, largest 123% over the limit.
- Nitrogen, ammonia total [as N]: 24 limits, 24 violations of any kind, 1 effluent exceedance, latest March 31, 2014, largest 8% over the limit.
- Temperature, water deg. centigrade: 0 limits, 74 violations of any kind.
- Chlorine, total residual: 2 limits, 71 violations of any kind.
- pH: 2 limits, 70 violations of any kind.
- Oil and grease: 1 limit, 12 violations of any kind.
- Oil and grease visual: 1 limit, 11 violations of any kind.
- July 12, 2024: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- July 12, 2024: Monitoring Violations - Analysis not Conducted (ST6).
- July 12, 2024: Management Practice Violations - Improper Operation and Maintenance (ST6).
- July 12, 2024: Monitoring Violations - Invalid/Unrepresentative Sample (ST6).
- July 12, 2024: Monitoring Violations - Improper Analysis or Lab Error (ST6).
SAN LAZARO MHP WWTF among its neighbors
83 discharge permits are in the City of Boulder-Boulder Creek subwatershed (HUC 101900050406); CO0020184 is one. Its county: 355, 5 major; CO0020184 is minor permit.
Other permits in the City of Boulder-Boulder Creek subwatershed (HUC 101900050406)
- 0456 - CENTRAL AVE BRIDGE REPLACEMENT, Boulder: COG317234, minor, term to 2028-05-31
- 0456 - CENTRAL AVE. BRIDGE REPLACEMENT, Boulder: COR428424, minor, term to 2029-03-31
- 1155 CANYON CONDOMINIUMS, Boulder County: COG603165, minor, term to 2012-12-31
- 19TH ST MULTIMODAL IMPROVEMENTS, Boulder: COR423689, minor, term to 2029-03-31
- 2504 SPRUCE, Boulder: COR428064, minor, term to 2029-03-31
- 28TH STREET & COLORADO AVE PROTECTED INTERSECTION, Boulder: COR422059, minor, term to 2024-03-31
- 30 BLUFF, Boulder: COR429635, minor, term to 2029-03-31
- 30TH STREET SEPARATED BIKE LANES PROJECT, Boulder: COR423269, minor, term to 2029-03-31
- 929 PEARL ST DEWATERING SYSTEM, Boulder: COG318093, minor, term to 2028-05-31
- AGILENT TECH BOULDER, Boulder: COR901298, minor, term to 2017-06-30
Identity
| Facility | SAN LAZARO MHP WWTF |
|---|---|
| Permittee | San Lazaro c/o 5005 Properties |
| NPDES ID | CO0020184 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | November 30, 2001 |
| Expires | December 31, 2006 |
| Address | Boulder County, CO 80301 |
| Receiving water | BOULDER CREEK |
| Subwatershed | City of Boulder-Boulder Creek (HUC 101900050406) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler COR000233148 |
NPDES CO0020184: effluent limits and exceedances
SAN LAZARO MHP WWTF (NPDES CO0020184): 13 pollutants on file, 11 limited; 13 with a violation of any kind, 8 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 4 | 188 | 26 | May 31, 2023 | 136% over the limit |
| Coliform, fecal general | 4 | 11 | 11 | May 31, 2010 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 21 | 9 | September 30, 2021 | 151% over the limit |
| BOD, 5-day, percent removal | 1 | 15 | 3 | April 30, 2003 | 549% over the limit |
| E. coli, thermotol, MF, MTEC | 0 | 78 | 2 | March 31, 2017 | 769% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 51 | 2 | January 31, 2005 | 47% over the limit |
| Solids, total suspended | 4 | 36 | 2 | July 31, 2002 | 123% over the limit |
| Nitrogen, ammonia total [as N] | 24 | 24 | 1 | March 31, 2014 | 8% over the limit |
| Temperature, water deg. centigrade | 0 | 74 | 0 | ||
| Chlorine, total residual | 2 | 71 | 0 | ||
| pH | 2 | 70 | 0 | ||
| Oil and grease | 1 | 12 | 0 | ||
| Oil and grease visual | 1 | 11 | 0 |
NPDES CO0020184: inspections, violations and enforcement
NPDES CO0020184: 5 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 12, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 12, 2024 | Monitoring Violations - Analysis not Conducted | ST6 |
| July 12, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 12, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| July 12, 2024 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
NPDES CO0020184 (SAN LAZARO MHP WWTF): no inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES CO0020184
NPDES CO0020184: one email when its EPA record changes — $99/month.
Permits near NPDES CO0020184
NPDES CO0020184: 13 pollutant rows, 5 dated events; ICIS-NPDES download, loaded October 14, 2026.