| |
DECISION ID |
7122 |
| |
| Pollutant: |
Ammonia |
| 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 (TMDL required list)(2006) |
| Revision Status |
Revised |
| Sources: |
Atmospheric Deposition | Highway/Road/Bridge Runoff | Internal Nutrient Cycling (primarily lakes) | Urban Runoff--Industrial Permitted | Urban Runoff/Storm Sewers |
| TMDL Name: |
Machado Lake Nitrogens (76) |
| TMDL Project Code: |
417 |
| Date TMDL Approved by USEPA: |
03/11/2009 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for removal on the section 303(d) list under sections 2.2 of the Listing Policy. Under 2.2 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and adopted by the Los Angeles RWQCB and approved by USEPA, and is expected to result in attainment of the standard. |
| |
| RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the Water Quality Limited Segments Being Addressed category of the section 303(d) list because a TMDL has been approved by USEPA, and applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
| |
| LOE ID: |
3928 |
| |
| Pollutant: |
Ammonia |
| 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 pre-2006 303(d) |
| |
| 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): |
|
| |
| LOE ID: |
28170 |
| |
| Pollutant: |
Ammonia |
| LOE Subgroup: |
Narrative Description Data |
| Matrix: |
Not Specified |
| Fraction: |
None |
| |
| 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: |
A TMDL has been approved for this water segment-pollutant combination. The Machado Lake Nutrient TMDL was adopted by the Los Angeles RWQCB on May 01, 2008 and subsequently approved by USEPA. The TMDL was integrated into the Basin Plan as Attachment A of Basin Plan Resolution 2008-006. |
| Data Reference: |
Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009 |
| |
| Water Quality Objective/Criterion: |
|
| Objective/Criterion Reference: |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
|
| Temporal Representation: |
|
| Environmental Conditions: |
|
| QAPP Information: |
QA information unavailable. |
| QAPP Information Reference(s): |
| |
DECISION ID |
7124 |
| |
| Pollutant: |
Eutrophic |
| 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 (TMDL required list)(2006) |
| Revision Status |
Revised |
| Sources: |
Atmospheric Deposition | Highway/Road/Bridge Runoff | Internal Nutrient Cycling (primarily lakes) | Urban Runoff--Industrial Permitted | Urban Runoff/Storm Sewers |
| TMDL Name: |
Machado Lake Nitrogens (76) |
| TMDL Project Code: |
417 |
| Date TMDL Approved by USEPA: |
03/11/2009 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for removal on the section 303(d) list under sections 2.2 of the Listing Policy. Under 2.2 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and adopted by the Los Angeles RWQCB and approved by USEPA, and is expected to result in attainment of the standard. |
| |
| RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the Water Quality Limited Segments Being Addressed category of the section 303(d) list because a TMDL has been approved by USEPA, and applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 7124 |
| |
| LOE ID: |
3930 |
| |
| Pollutant: |
Eutrophic |
| 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 pre-2006 303(d) |
| |
| 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): |
|
| |
| LOE ID: |
28171 |
| |
| Pollutant: |
Eutrophic |
| LOE Subgroup: |
Narrative Description Data |
| Matrix: |
Not Specified |
| Fraction: |
None |
| |
| 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: |
A TMDL has been approved for this water segment-pollutant combination. The Machado Lake Nutrient TMDL was adopted by the Los Angeles RWQCB on May 01, 2008 and subsequently approved by USEPA. The TMDL was integrated into the Basin Plan as Attachment A of Regional Board Resolution No. 2008-006. |
| Data Reference: |
Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009 |
| |
| Water Quality Objective/Criterion: |
|
| Objective/Criterion Reference: |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
|
| Temporal Representation: |
|
| Environmental Conditions: |
|
| QAPP Information: |
QA information unavailable. |
| QAPP Information Reference(s): |
| |
DECISION ID |
7125 |
| |
| Pollutant: |
Odor |
| 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 (TMDL required list)(2006) |
| Revision Status |
Revised |
| Sources: |
Atmospheric Deposition | Highway/Road/Bridge Runoff | Internal Nutrient Cycling (primarily lakes) | Urban Runoff--Industrial Permitted | Urban Runoff/Storm Sewers |
| TMDL Name: |
Machado Lake Nitrogens (76) |
| TMDL Project Code: |
417 |
| Date TMDL Approved by USEPA: |
03/11/2009 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for removal on the section 303(d) list under sections 2.2 of the Listing Policy. Under 2.2 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and adopted by the Los Angeles RWQCB and approved by USEPA, and is expected to result in attainment of the standard. |
| |
| RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the Water Quality Limited Segments Being Addressed category of the section 303(d) list because a TMDL has been approved by USEPA, and applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 7125 |
| |
| LOE ID: |
28172 |
| |
| Pollutant: |
Odor |
| LOE Subgroup: |
Narrative Description Data |
| Matrix: |
Not Specified |
| Fraction: |
None |
| |
| Beneficial Use: |
Non-Contact Recreation |
| |
| Number of Samples: |
0 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
A TMDL has been approved for this water segment-pollutant combination. The Machado Lake Nutrient TMDL was adopted by the Los Angeles RWQCB on May 01, 2008 and subsequently approved by USEPA. The TMDL was integrated into the Basin Plan as Attachment A of Regional Board Resolution No. 2008-006. |
| Data Reference: |
Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009 |
| |
| Water Quality Objective/Criterion: |
|
| Objective/Criterion Reference: |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
|
| Temporal Representation: |
|
| Environmental Conditions: |
|
| QAPP Information: |
QA information unavailable. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
3931 |
| |
| Pollutant: |
Odor |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Not Recorded |
| |
| Beneficial Use: |
Non-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) |
| |
| 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 |
7239 |
| |
| Pollutant: |
Trash |
| 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 (TMDL required list)(2006) |
| Revision Status |
Revised |
| Sources: |
Agriculture-storm runoff | Recreational and Tourism Activities (non-boating) | Urban Runoff/Storm Sewers |
| TMDL Name: |
Machado Lake Trash (81) |
| TMDL Project Code: |
420 |
| Date TMDL Approved by USEPA: |
03/06/2008 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for removal on the section 303(d) list under sections 2.2 of the Listing Policy. Under 2.2 of the Policy, a minimum of one line of evidence is needed to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and adopted by the Los Angeles RWQCB and approved by USEPA, and is expected to result in attainment of the standard. |
| |
| RWQCB Board Decision / Staff Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the Water Quality Limited Segments Being Addressed category of the section 303(d) list because a TMDL has been approved by USEPA, and applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 7239 |
| |
| LOE ID: |
28071 |
| |
| Pollutant: |
Trash |
| LOE Subgroup: |
Narrative Description Data |
| Matrix: |
Not Specified |
| Fraction: |
None |
| |
| Beneficial Use: |
Non-Contact Recreation |
| |
| Number of Samples: |
0 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
A TMDL has been approved for this water segment-pollutant combination. The Machado Lake Trash TMDL was adopted by the Los Angeles RWQCB on June 07, 2007 and subsequently approved by USEPA. The TMDL was been integrated into the Basin Plan as Attachment A of Basin Plan Resolution 2007-006. |
| Data Reference: |
Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009 |
| |
| Water Quality Objective/Criterion: |
|
| Objective/Criterion Reference: |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
|
| Temporal Representation: |
|
| Environmental Conditions: |
|
| QAPP Information: |
QA information unavailable. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
4317 |
| |
| Pollutant: |
Trash |
| LOE Subgroup: |
Visual |
| Matrix: |
Not Specified |
| Fraction: |
Not Recorded |
| |
| Beneficial Use: |
Non-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) |
| |
| 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): |