| Pollutant: |
pH |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
New Decision |
| Revision Status |
Revised |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Regional Board Conclusion: |
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
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| Regional Board Decision Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
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| State Board Review of Regional Board Conclusion and Recommendation: |
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| State Board Decision Recommendation: |
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Line of Evidence (LOE) for Decision ID 133920, pH
|
Region 8 |
Tidal Prism of Greenville-Banning Channel |
|
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| LOE ID: |
237390 |
| |
| Pollutant: |
pH |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Estuarine Habitat |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Water Board staff assessed Santa Ana River Regional Monitoring Program data for Tidal Prism of Greenville-Banning Channel to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for pH. |
| Data Reference: |
Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8. |
| |
| SWAMP Data: |
Non-SWAMP |
| |
| Water Quality Objective/Criterion: |
The pH of bay or estuary waters shall not be raised above 8.6 or depressed below 7.0 as a result of controllable water quality factors; ambient pH levels shall not be changed more than 0.2 units (Water Quality Control Plan, Santa Ana Basin, Chapter 4 Water Quality Objectives, Enclosed Bays and Estuaries). |
| Objective/Criterion Reference: |
Water Quality Control Plan, Santa Ana River Basin |
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| Evaluation Guideline: |
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| Guideline Reference: |
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| Spatial Representation: |
The samples were collected at 1 monitoring site: P4-OC3 (Greenville-Banning Channel in Tidal Prism). |
| Temporal Representation: |
The samples were collected between the dates of 2016-07-25 and 2019-09-23 |
| Environmental Conditions: |
|
| QAPP Information: |
CDM Smith. 2019. Santa Ana River Watershed Bacteria Monitoring Program. |
| QAPP Information Reference(s): |
Santa Ana River Watershed Bacteria
Monitoring Program |
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