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DECISION ID |
16523 |
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| Pollutant: |
Copper (sediment) | Mercury (sediment) | Zinc (sediment) |
| 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 |
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| Weight of Evidence: |
This pollutant is being considered for placement on the 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.
Three lines of evidence are available in the administrative record to assess this pollutant. Fourteen of the copper samples, 22 of the mercury samples, and 12 of zinc samples exceed the sediment quality guidelines.
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 section 303(d) list in the Water Quality Limited Segments category.
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. Fourteen of the copper samples, 22 of the mercury samples, and 12 of zinc samples of 48 samples exceeded the sediment quality guidelines and this does exceed the allowable frequency listed in Table 3.1 of the Listing Policy. However, it is more appropriate to assess this beneficial use by using the sediment quality objective that the State Board has approved and that is pending EPA approval. At this time, there is not enough data to use the sediment quality objectives and the municipal storm water permit for Orange County will be amended to require additional analytes in the monitoring program that will allow for a complete analyses of the data using the sediment quality objective.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
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| RWQCB Board Decision / Staff 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 because it cannot be determined if applicable water quality standards are not being exceeded. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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| LOE ID: |
26291 |
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| Pollutant: |
Mercury (sediment) |
| LOE Subgroup: |
Pollutant-Sediment |
| Matrix: |
Sediment |
| Fraction: |
None |
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| Beneficial Use: |
Marine Habitat |
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| Number of Samples: |
48 |
| Number of Exceedances: |
22 |
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| Data and Information Type: |
Chemical monitoring of sediments |
| Data Used to Assess Water Quality: |
Of the 48 samples collected, 22 exceeded the ERM guideline |
| Data Reference: |
the Lower Newport Bay Copper/Metals Marina Study was conducted to determine whether concentrations of Cu (and other metals) were elevated in marinas compared to nearby channel sites located outside each marina. This data was collected (in 2006) to attempt to determine a linkage between elevated Cu concentrations in Newport Bay and Cu boat paints by examining whether Cu discharged from Cu boat paints was remaining in marina waters and sediments or being washed out of the marinas. Other heavy metals were also analyzed to determine if concentrations were elevated in marinas compared to corresponding channel sites. Cu concentrations exceeded CTR water quality criteria in marina waters compared to channel sites. Cu, Zn and Hg concentrations also exceeded ERM criteria in marina sediments in the West Newport Bay area (Turning Basin and S Lido Channel), and sediment toxicity was found in these areas. Cu and Zn are likely from boat paints and Zn anodes, respectively, the source of Hg is unknown -possibly from stormwater runoff.
This study was conducted in support of the Cu TMDL for Newport Bay which is under development.
This data was also submitted to DPR to be used in their reevaluation of the registration of Cu boat paints.
ref. Lower Newport Bay Copper/Metals Marina Study -Final Report, July 2007, OC Coastkeeper
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| Water Quality Objective/Criterion: |
Narrative Water Quality Objective: The concentration of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995). |
| Objective/Criterion Reference: |
Water Quality Control Plan-Santa Ana Region |
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| Evaluation Guideline: |
ERM Mercury - 0.71 ug/g |
| Guideline Reference: |
Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97 |
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| Spatial Representation: |
The samples were collected at Bahia, Harbor, Lido Yacht, H&J Mooring adn Balboa Yacht Basin |
| Temporal Representation: |
The samples were collected in May, August and December 2006 |
| Environmental Conditions: |
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| QAPP Information: |
The samples were collected under the Quality Assurance Plan approved by the Regional Water Quality Control Board. |
| QAPP Information Reference(s): |
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| LOE ID: |
26280 |
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| Pollutant: |
Copper (sediment) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Sediment |
| Fraction: |
None |
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| Beneficial Use: |
Marine Habitat |
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| Number of Samples: |
48 |
| Number of Exceedances: |
14 |
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| Data and Information Type: |
Chemical monitoring of sediments |
| Data Used to Assess Water Quality: |
Of the 48 samples collected, 14 exceeded the ERM guideline. |
| Data Reference: |
the Lower Newport Bay Copper/Metals Marina Study was conducted to determine whether concentrations of Cu (and other metals) were elevated in marinas compared to nearby channel sites located outside each marina. This data was collected (in 2006) to attempt to determine a linkage between elevated Cu concentrations in Newport Bay and Cu boat paints by examining whether Cu discharged from Cu boat paints was remaining in marina waters and sediments or being washed out of the marinas. Other heavy metals were also analyzed to determine if concentrations were elevated in marinas compared to corresponding channel sites. Cu concentrations exceeded CTR water quality criteria in marina waters compared to channel sites. Cu, Zn and Hg concentrations also exceeded ERM criteria in marina sediments in the West Newport Bay area (Turning Basin and S Lido Channel), and sediment toxicity was found in these areas. Cu and Zn are likely from boat paints and Zn anodes, respectively, the source of Hg is unknown -possibly from stormwater runoff.
This study was conducted in support of the Cu TMDL for Newport Bay which is under development.
This data was also submitted to DPR to be used in their reevaluation of the registration of Cu boat paints.
ref. Lower Newport Bay Copper/Metals Marina Study -Final Report, July 2007, OC Coastkeeper
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| Water Quality Objective/Criterion: |
Narrative Water Quality Objective: The concentration of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995). |
| Objective/Criterion Reference: |
Water Quality Control Plan-Santa Ana Region |
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| Evaluation Guideline: |
Effects Range Median for copper is 270 ug/g dry weight |
| Guideline Reference: |
Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97 |
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| Spatial Representation: |
The samples were collected at Bahia, Harbor, Lido Yacht, H&J Mooring and Balboa Yacht Basin |
| Temporal Representation: |
The samples were collected in May, August and December 2006. |
| Environmental Conditions: |
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| QAPP Information: |
The samples were collected under the Quality Assurance Plan approved by the Regional Water Quality Control Board. |
| QAPP Information Reference(s): |
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| LOE ID: |
26289 |
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| Pollutant: |
Zinc (sediment) |
| LOE Subgroup: |
Pollutant-Sediment |
| Matrix: |
Sediment |
| Fraction: |
None |
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| Beneficial Use: |
Marine Habitat |
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| Number of Samples: |
48 |
| Number of Exceedances: |
12 |
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| Data and Information Type: |
Chemical monitoring of sediments |
| Data Used to Assess Water Quality: |
Of the 48 samples collected 12 exceeded the ERM guidelines. |
| Data Reference: |
the Lower Newport Bay Copper/Metals Marina Study was conducted to determine whether concentrations of Cu (and other metals) were elevated in marinas compared to nearby channel sites located outside each marina. This data was collected (in 2006) to attempt to determine a linkage between elevated Cu concentrations in Newport Bay and Cu boat paints by examining whether Cu discharged from Cu boat paints was remaining in marina waters and sediments or being washed out of the marinas. Other heavy metals were also analyzed to determine if concentrations were elevated in marinas compared to corresponding channel sites. Cu concentrations exceeded CTR water quality criteria in marina waters compared to channel sites. Cu, Zn and Hg concentrations also exceeded ERM criteria in marina sediments in the West Newport Bay area (Turning Basin and S Lido Channel), and sediment toxicity was found in these areas. Cu and Zn are likely from boat paints and Zn anodes, respectively, the source of Hg is unknown -possibly from stormwater runoff.
This study was conducted in support of the Cu TMDL for Newport Bay which is under development.
This data was also submitted to DPR to be used in their reevaluation of the registration of Cu boat paints.
ref. Lower Newport Bay Copper/Metals Marina Study -Final Report, July 2007, OC Coastkeeper
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| Water Quality Objective/Criterion: |
Narrative Water Quality Objective: The concentration of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995). |
| Objective/Criterion Reference: |
Water Quality Control Plan-Santa Ana Region |
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| Evaluation Guideline: |
Effects Range Median for zinc is 410 ug/g dry weight |
| Guideline Reference: |
Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97 |
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| Spatial Representation: |
The samples were collected at Bahia, Harbor, Lido Yacht, H&J Mooring adn BYB |
| Temporal Representation: |
The samples were collected in May, August and December 2006. |
| Environmental Conditions: |
|
| QAPP Information: |
The samples were collected under the Quality Assurance Plan approved by the Regional Water Quality Control Board. |
| QAPP Information Reference(s): |