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California Integrated Water Quality System Project (CIWQS)
   Facility At-A-Glance Report

  
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Place ID 251631 		  
  
  
  
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General Information
Region Place ID Place Name Place Type Place Address Place County
3 251631 Rancho Colina MH Estates STP Wastewater Treatment Facility 1045 Atascadero Morro Bay, CA, 93442-1845 San Luis Obispo
Expand/Contract Related Parties
Related Parties
Party Party Type Party Name Role Classification Relationship Start Date Relationship End Date
624423 Person Steve MacElvaine Is Onsite Manager For 05/17/2021
570979 Person James Bishop Case Worker 05/17/2021
36746 Organization Rancho Colina MH Estates STP Owner Privately-Owned Business 08/14/1970
Total Related Parties: 3
Expand/Contract Regulatory Measures
Regulatory Measures
Reg Measure ID Reg Measure Type Region Program Order No. WDID Effective Date Expiration Date Status Amended?
449606 Enrollee - WDR 3 WDRMUNIOTH 2014-0153-DWQ 3 401019001 10/18/2022 10/18/2032 Active N
144278 WDR 3 WDRMUNIOTH 87-110 3 401019001 06/12/1987 06/01/2020 Historical N
142814 WDR 3 WDRMUNIOTH 70-00801 3 401019001 08/14/1970 08/01/1980 Historical N
Total Reg Measures: 3
Expand/Contract Violations
Violations
Violation ID Occurred Date Violation Type (-) Violation Description Corrective Action Status Classification Source
1130713 06/11/2024 OEV Flow Maximum Daily (MDEL) limit is 35000 GPD and reported value was 35008 GPD. Violation B Report
1130710 01/01/2024 CAT1 Nitrogen, Total (as N) Percent Reduction limit is 50.0 % and reported value was -6.0 %. Violation B Report
1119113 04/30/2023 CAT1 Nitrogen, Total (as N) Percent Reduction limit is 50 % and reported value was 4 %. Violation B Report
1119112 03/31/2023 CAT1 Nitrogen, Total (as N) Percent Reduction limit is 50 % and reported value was 4 %. Violation B Report
1119111 02/28/2023 CAT1 Nitrogen, Total (as N) Percent Reduction limit is 50 % and reported value was 4 %. Violation B Report
1119110 01/31/2023 CAT1 Nitrogen, Total (as N) Percent Reduction limit is 50 % and reported value was 4 %. Violation B Report
1115621 10/25/2022 GWAT Groundwater Nitrate Limitation (8 mg/L) was violated. Result: 10.0 mg/L Violation B Report
1109432 07/28/2022 GWAT Groundwater nitrate (as N) was 10 mg/L and the limit was 8 mg/L. However, Well 2 is downgradient of more than 50,000 avocado trees that require addition of nitrogen fertilizer. According to the Morro Basin Nitrate Study (City of Morro Bay, 2007), concentrations of nitrates increased in the basin almost five-fold between 1980 and 2007. The study estimates the nitrogen loading rate for mature avocado trees at 100 pounds per acre. Violation B Report
1106399 04/27/2022 GWAT Groundwater Nitrate Limitation (8 mg/L) was violated. Result: 8.6 mg/L Violation B Report
1106401 04/19/2022 Order Conditions Effluent Chloride was 280 mg/L which is more than Order specified limit: 259 mg/L in place to remove nitrates from the potable water supply Violation B Report
1106403 04/19/2022 CAT1 Total Dissolved Solids (TDS) 1-Hour Average (Mean) limit is 940 mg/L and reported value was 1140 mg/L. Violation B Report
1100358 10/04/2021 GWAT Groundwater Nitrate Limitation (8 mg/L) was violated. Result: 10.9 mg/L Violation B Report
1100419 10/04/2021 CAT1 Total Dissolved Solids (TDS) Instantaneous Maximum limit is 1050 mg/L and reported value was 1070 mg/L. Violation B Report
1095615 07/14/2021 GWAT Groundwater Nitrate Limit (8 mg/L) exceeded: 9.4 mg/L Violation B Report
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 14 Priority Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
*As of 5/20/2010, the Water Board's Enforcement Policy requires that all violations be classified as 1, 2 or 3, with class 1 being the highest. Prior to this, violations were simply classified as Yes or No. If a 123 classification has been assigned to a violation that occurred before this date, that classification data will be displayed instead of the Yes/No data.
Violation Types
CAT1 = Category 1 Pollutant (Effluent Violation for Group 1 Pollutant) GWAT = Groundwater
Order Conditions = Order Conditions OEV = Other Effluent Violation
Expand/Contract Enforcement Actions
Enforcement Actions
Enf Id Enf Type Enf Order No. Effective Date Status
311997 Staff Enforcement Letter 08/04/2006 Historical
306227 Notice of Violation 06/27/2006 Historical
254021 13267 Letter 10/20/2004 Historical
Total Enf Actions: 3
Expand/Contract Inspections
Inspections
Inspection ID Inspection Type Lead Inspector Actual End Date Planned Violations Attachment
44382980 B Type compliance inspection James Bishop 06/18/2021 N 0 N/A
27449211 B Type compliance inspection Jon Rokke 02/02/2017 N 0 N/A
1157987 B Type compliance inspection Allison Dominguez 07/31/2007 Y 0 N/A
1121741 B Type compliance inspection Allison Dominguez 06/29/2007 Y 0 N/A
724926 B Type compliance inspection Allison Dominguez 08/02/2006 Y 0 N/A
599833 B Type compliance inspection Allison Dominguez 06/16/2006 Y 0 N/A
336300 Follow-up inspection (enforcement) Matt Thompson 11/08/2004 Y 0 N/A
336030 B Type compliance inspection Matt Thompson 10/18/2004 Y 0 N/A
330541 B Type compliance inspection Scott Phillips 01/12/2003 Y 0 N/A
292017 B Type compliance inspection Scott Phillips 12/28/2001 Y 0 N/A
291998 B Type compliance inspection Scott Phillips 03/26/2001 Y 0 N/A
292025 B Type compliance inspection Ron Sherer 09/20/1999 Y 0 N/A
292019 B Type compliance inspection Scott Phillips 06/04/1999 Y 0 N/A
292020 B Type compliance inspection Sorrel Marks 03/26/1998 Y 0 N/A
292022 B Type compliance inspection Keith Haas 06/20/1997 Y 0 N/A
292018 B Type compliance inspection Sorrel Marks 03/19/1996 Y 0 N/A
292023 B Type compliance inspection Tom Kukol 11/09/1995 Y 0 N/A
292021 B Type compliance inspection Ron Sherer 02/28/1995 Y 0 N/A
292024 B Type compliance inspection Ron Sherer 11/15/1994 Y 0 N/A
Total Inspections: 19 Last Inspection: 06/18/2021
  
The current report was generated with data as of: 06/06/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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