| Water Body Name: | Canyon Lake (Railroad Canyon Reservoir) |
| Water Body ID: | CAL8021100019990208151525 |
| Water Body Type: | Lake & Reservoir |
DECISION ID |
69153 |
Region 8 |
Canyon Lake (Railroad Canyon Reservoir) |
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| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Reason for Delisting: | Applicable WQS attained; due to change in WQS |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This 303(d) listing was made prior to 2006 and therefore the data is not held in
the assessment database. A review of Regional Board records indicate that in 1987, fecal coliform results for lake samples adjacent to historical campgrounds that had no toilet facilities were as high as 900 org/100mL and the campgrounds were closed in the intervening years. In 2012, the Regional Board revised its Basin Plan with new Pathogen Bacteria Indicator Objectives for REC-1(Resolution No. R8-2012-001, approved by USEPA in 2015). In general, the primary objective is <126 E. coli organisms per 100 mL as a geomean of at least 5 samples in a running 30-day period (there were additional provisions for specific waters through UAAs, a high flow suspension provision and use of Single Sample Maximums for posting and for the case where limited data prevents the calculation of geomeans. During 2009, a total of 309 samples were collected from Canyon Lake (6 sampling locations) and were analyzed for E. coli, which resulted in the calculation of 14 geomeans for each of the 6 sampling locations, or 84 geomean measurements. The maximum geomean value was 39.4 org/100mL, well below the current objective for Indicator Pathogen Bacteria. Therefore, Regional Board staff has made the decision to delist Canyon Lake for ¿Pathogens¿ based on a change in objectives from ¿<200 fecal coliform organisms per 100 mL¿ to ¿<126 E. coli organisms per 100 mL¿. Further, Regional Board staff judge that the weight of evidence based on extensive, current sampling support that delisting decision. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 96008 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 84 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Zero of the 84 geomeans exceeded the E. coli objective. | ||||
| Data Reference: | Canyon Lake Bacteria Characterization - Water quality assessment-data analysis notes- Canyon Lake, Riverside County,Santa Ana Regional Quality Control Board | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The running geometric mean of at least 5 samples in a 30-day period shall be less than 126 E. coli organisms per 100 mL. 2015 Water Quality Control Plan for the Santa Ana River Basin. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan, Santa Ana River Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected from 6 locations, 2 open water locations based on skiing and boat use and from 4 beaches: Roadrunner Park, Indian Beach, Sunset Park and Sierra Park. | ||||
| Temporal Representation: | The samples were collected weekly from 1/30/2009 through 3/20/2009 and from 6/5/2009 through 9/4/2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Sampling and analysis was conducted in compliance with the Comprehensive Quality Assurance Manual - Version 31- For MWH Laboratories | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 4405 | ||||
| Pollutant: | Pathogens | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference pre-2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
99298 |
Region 8 |
Canyon Lake (Railroad Canyon Reservoir) |
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| Pollutant: | Fish Kills |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. The one sample may exceed the guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One sample may exceed the guideline but this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| 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. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 81358 | ||||
| Pollutant: | Fish Kills | ||||
| LOE Subgroup: | Adverse Biological Responses | ||||
| Matrix: | Tissue | ||||
| Fraction: | Fish whole body | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Incidence of spills and/or fish kills | ||||
| Data Used to Assess Water Quality: | Approximately 50 to 100 Shad on were observed dead from the shore. | ||||
| Data Reference: | Data for Various Pollutants in Santa Ana, 2007-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Inland surface water communities and populations, including vertebrate, invertebrate, and plant species, shall not be degraded as a result of the discharge of waste. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan, Santa Ana River Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Observed fish kills were at Sunset Beach. | ||||
| Temporal Representation: | The fish kills took place on October 29, 2010. | ||||
| Environmental Conditions: | The fish kills were attributed to the low dissolved oxygen observed in the lake. | ||||
| QAPP Information: | Data were provided in a August 2010 report prepared for the Santa Ana Regional Water Quality Control Board called, Lake Elsinore & Canyon Lake Nutrient TMDL Annual Water Quality Report July 2009 June 2010. The report was prepared by Lake Elsinore & Canyon Lake Nutrient TMDL Task Force. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
69204 |
Region 8 |
Canyon Lake (Railroad Canyon Reservoir) |
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| Pollutant: | Nutrients |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
| Revision Status | Original |
| Sources: | Nonpoint Source |
| TMDL Name: | Lake Elsinore Watershed Nutrient TMDL |
| TMDL Project Code: | 120 |
| Date TMDL Approved by USEPA: | 09/30/2005 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle.
This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. The Lake Elsinore Watershed Nutrient TMDL was approved by the RWQCB in 2004. Per the RWQCB, the TMDL was approved by USEPA in September 2005. This water segment-pollutant combination was moved off the section 303(d) list during the 2002 listing cycle. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list. |
| Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. The decision has not changed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 763 | ||||
| Pollutant: | Nutrients | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||