| Water Body Name: | Eureka Plain HU, Jolly Giant Creek |
| Water Body ID: | CAR1100005119990617151229 |
| Water Body Type: | River & Stream |
DECISION ID |
73116 |
Region 1 |
Eureka Plain HU, Jolly Giant Creek |
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| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2025 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Fecal indicator bacteria (which includes E. coli and fecal coliform) are being considered for placement on the Section 303(d) list under Section 3.2 and 3.3 of the Listing Policy. Under these sections a single line of evidence (LOE) is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess fecal indicator bacteria in this water body: two for E. coli and one for fecal coliform.
In accordance with Section 3.3 of the Listing Policy, a 4% exceedance rate shall be used to add waters to the List "if water quality monitoring was conducted April 1 through October 31 only". The E. coli data collected in Jolly Giant Creek (LOEs 33294 and 47487) were collected during this timeframe only. Eleven of 14 E. coli samples collected in Jolly Giant Creek exceed the evaluation guideline and this violates the allowed 4% exceedance frequency. The fecal coliform data assessed in LOE 31828 for Jolly Giant Creek includes data collected during months outside the April - October range. Therefore, the data are being considered under section 3.2 of the Listing Policy, using a 10% exceedance rate. Ten of 16 fecal coliform samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding Jolly Giant Creek to the Section 303(d) list for fecal indicator bacteria (i.e., sufficient justification to list). This conclusion is based on the staff findings that: (1) The data used satisfy the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfy the data quantity requirements of Section 6.1.5 of the Policy. (3) Eleven of 14 E. coli samples collected in Jolly Giant Creek exceed the evaluation guideline and this violates the allowed 4% exceedance frequency. (4) Ten of 16 fecal coliform samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. (5) 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: | This region was not assessed this cycle. All decisions have been carried over from the previous cycle and remain the same. |
| 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: | 33294 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | One of the two samples exceeded the E. coli evaluation guideline. | ||||
| Data Reference: | Data for bacteria in various North Coast Region water bodies | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | Draft Guidance for Fresh Water Beaches (CDPH 2011): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. | ||||
| Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | The samples were collected at Upper Jolly Giant Creek. | ||||
| Temporal Representation: | The samples were collected in September and October 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the Redwood Community Action Agency's Humboldt Bay First Flush Quality Assurance Project Plan. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 47487 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 12 | ||||
| Number of Exceedances: | 10 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Ten of the twelve samples exceeded the E. coli evaluation guideline. | ||||
| Data Reference: | Data for bacteria in various North Coast Region water bodies | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | Draft Guidance for Fresh Water Beaches (CDPH 2011): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. | ||||
| Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | The samples were collected at Jolly Giant Creek at Foster/Shay Park, Jolly Giant Creek at Somoa Blvd and Jolly Giant Creek at Granite Road. | ||||
| Temporal Representation: | The samples were collected September 2008 to October 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the Redwood Community Action Agency's Humboldt Bay First Flush Quality Assurance Project Plan. | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 31828 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 16 | ||||
| Number of Exceedances: | 10 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Ten of the sixteen samples exceeded the fecal coliform evaluation guideline. Since less than 5 samples over a 30-day period were collected, the evaluation guideline is used for comparison to the samples. | ||||
| Data Reference: | Data for bacteria in various North Coast Region water bodies | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN/ 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. Water Quality Control Plan, North Coast Region (NCRWQCB 2011). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) for the North Coast Region | ||||
| Evaluation Guideline: | Beach posting is recommended when single sample fecal coliform levels exceed 400 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011). | ||||
| Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | The samples were collected at Jolly Giant Creek at Foster/Shay Park, Jolly Giant Creek at Somoa Blvd and Jolly Giant Creek at Granite Road. | ||||
| Temporal Representation: | The samples were collected approxiamtely three times a year between October 2005 to May 2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the Redwood Community Action Agency's Humboldt Bay First Flush Quality Assurance Project Plan. | ||||
| QAPP Information Reference(s): | |||||