| |
DECISION ID |
4981 |
| |
| Pollutant: |
Copper |
| 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)(2006) |
| Revision Status |
Original |
| Sources: |
Source Unknown |
| Expected TMDL Completion Date: |
2019 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| 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.
One line of evidence is available in the administrative record to assess this pollutant. A large number of samples exceed the water quality objective.
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 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. Two of 5 samples exceeded the 3.1 ppb CTR chronic saltwater criteria and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
| |
| LOE ID: |
325 |
| |
| Pollutant: |
Copper |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Dissolved |
| |
| Beneficial Use: |
Estuarine Habitat |
| |
| Number of Samples: |
5 |
| Number of Exceedances: |
2 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Two of 5 samples were in exceedance of the dissolved chronic criteria. Samples collected near the entrance, between piers 3 and 4, and at the west corner of the marina near piling 2 and the Shelter Island boatyard were in exceedance of the dissolved chronic criteria (SDRWQCB, 2004c). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the CTR: the dissolved copper chronic criterion is 3.1 ppb, and the acute criterion is 4.8 ppb. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at the San Diego Bay, Americas Cup Harbor, near the entrance, between piers 3 and 4, by the bridge and the pier, near piling number 6 and Kettenberg marina, and at the west corner of the marina near piling 2 and the Shelter Island boatyard. |
| Temporal Representation: |
Samples were collected on 03/15/2004. |
| Environmental Conditions: |
|
| QAPP Information: |
QA Info Missing |
| QAPP Information Reference(s): |