Final California 2010 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Ballona Creek
Water Body ID:	CAR4051300019980918142302
Water Body Type:	River & Stream


DECISION ID	4341	Region 4
Ballona Creek

Pollutant:	Silver (sediment)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Ballona Creek, above Centinela Blvd., is a concrete-lined channel and the Ballona Creek Estuary, below Centinela Blvd., is soft-bottom. Data used in the 1996 WQA to assess Ballona Creek for silver in sediment appear to have been collected from the soft-bottom estuary. Data for silver in sediment from Line of Evidence (LOE) 2366 appears to follow the same pattern and the information described in the LOE will not be considered in this decision. Accordingly, in the Ballona Creek Estuary Toxic Pollutants TMDL, "USEPA and the State found that the Ballona Creek listings for all sediments (cadmium, copper, lead and silver) were made in error and should be applied to the estuary."

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 the original listing was faulty.

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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4341, Silver (sediment)	Region 4
Ballona Creek

LOE ID:

28195

Pollutant:

Silver

LOE Subgroup:

Narrative Description Data

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

In the Basin Plan, the transition between Creek and Estuary is at Centinela Blvd. The Ballona Creek Estuary Toxic Pollutants TMDL indicates that, "Ballona Creek (above Centinela) is concrete-lined. Ballona Creek Estuary (below Centinela) is soft-bottomed. Agencies unfamiliar with this regulatory distinction may have inadvertently attributed samples collected from Ballona Creek Estuary to Ballona Creek. Sediment data used in the 1996 WQA appear to have been collected from soft-bottomed Estuary sediments as opposed to the concrete-lined channel."

Data Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Ballona Creek Estuary Toxic Pollutants TMDL Final Staff Report. Prepared by California Regional Water Quality Control Board Los Angeles Region and U.S. Environmental Protection Agency Region 9.

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 not available.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4341, Silver (sediment)	Region 4
Ballona Creek

LOE ID:

2366

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

There were 21 samples collected with 3 exceeding the PEL. Samples were collected by the Army Corps of Engineers (Heal the Bay, 2006).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Probable Effects Level (PEL) of 1.77 ug/g (dry weight) (MacDonald et al., 1996).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Several sites in the water body.

Temporal Representation:

October 5-6, 1999.

Environmental Conditions:

QAPP Information:

ACOE Sediment Chemistry Data.

QAPP Information Reference(s):


DECISION ID	6050	Region 4
Ballona Creek

Pollutant:	Shellfish Harvesting Advisory
Final Listing Decision:	Delist from 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)(2006)
Revision Status	Revised
Reason for Delisting:	Flaws in original listing
TMDL Name:	Ballona Creek Coliform (49)
TMDL Project Code:	393
Date TMDL Approved by USEPA:	01/01/2006
Impairment from Pollutant or Pollution:	Pollution

Regional Board Conclusion:	Regional Board Conclusion: The Ballona Creek Coliform TMDL was approved by the RWQCB in June of 2006 and subsequently approved by USEPA. Based on the readily available 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. State Board Review and Conclusion: The April 19, 2010 State Water Board staff report for the 2010 Integrated Report recommended to delist this water body on the 303(d) list for shellfish harvesting advisory based on the following: The original decision in 2006 to list this water body for shellfish harvesting advisory was based upon flawed information. In 2006 the water body was incorrectly associated with the Ballona Creek Coliform TMDL and was incorrectly listed for shellfish harvesting advisory as Being Addressed By A TMDL. The water body does not possess a Beneficial Use of shellfish harvesting, or commercial and sports fishing. A TMDL has never been approved for this water body pollutant combination. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments Being Addressed portion of the section 303(d) list. On August 4, 2010 the State Water Board approved the staff recommendation to delist this water body-pollutant combination from the 303(d) list (being addressed by USEPA approved TMDL).

Regional Board Decision Recommendation:	The decision has not changed.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not have been placed on the Water Quality Limited Segments Being Addressed portion of the section 303(d) list and should be removed from the current listing because a TMDL has never been approved for this water body and the original listing (2006) was based upon flawed information.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 6050, Shellfish Harvesting Advisory	Region 4
Ballona Creek

LOE ID:

2377

Pollutant:

Shellfish Harvesting Advisory

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Not Recorded

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

NOTE: NJK 051008--LOE MAY NEED REVISING IN 2008---This LOE is a placeholder to support a 303(d) listing decision made in error in 2006. In 06 Shellfish Harvesting Advisory was incorrectly added to the 303d list being addressed category. It was listed for Ballona Creek Estuary originally and not for Ballona Creek (see 2002 list)

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):


DECISION ID	4358	Region 4
Ballona Creek

Pollutant:	ChemA
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the list in 1998 were not from this water body. Based on this data, it appears that this water body should never have been on the 303(d) list for this pollutant. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4358, ChemA	Region 4
Ballona Creek

LOE ID:

2370

Pollutant:

ChemA

LOE Subgroup:

Pollutant-Tissue

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

To assess potential impairments associated with contaminant concentrations in fish and shellfish tissue, summary information that formed the basis for the 1998 303(d) list was reviewed. Tissue data used in the assessment were from the State Mussel Watch Program in the mid-1980s and data collected as part of the Toxic Substances Monitoring Program (TSMP) in 1993. A review of the original data sets revealed that both sets of data were from locations in Ballona Creek Estuary. There are no data on fish tissue or mussel tissue for Ballona Creek. Consequently the Ballona Creek listing for this pollutant in tissue was made in error.

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):


DECISION ID	4881	Region 4
Ballona Creek

Pollutant:	Chlordane
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the list in 1998 were not from this water body. Based on this data, it appears that this water body should never have been on the 303(d) list for this pollutant. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4881, Chlordane	Region 4
Ballona Creek

LOE ID:

2372

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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):


DECISION ID	4590	Region 4
Ballona Creek

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the list in 1998 were not from this water body. Based on this data, it appears that this water body should never have been on the 303(d) list for this pollutant. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4590, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Ballona Creek

LOE ID:

2371

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

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):


DECISION ID	4591	Region 4
Ballona Creek

Pollutant:	Dieldrin
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the list in 1998 were not from this water body. Based on this data, it appears that this water body should never have been on the 303(d) list for this pollutant. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4591, Dieldrin	Region 4
Ballona Creek

LOE ID:

2373

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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):


DECISION ID	4463	Region 4
Ballona Creek

Pollutant:	PCBs (Polychlorinated biphenyls) (dioxin-like)
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the list in 1998 were not from this water body. Based on this data, it appears that this water body should never have been on the 303(d) list for this pollutant. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4463, PCBs (Polychlorinated biphenyls) (dioxin-like)	Region 4
Ballona Creek

LOE ID:

2369

Pollutant:

PCBs (Polychlorinated biphenyls) (dioxin-like)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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):


DECISION ID	4342	Region 4
Ballona Creek

Pollutant:	Sediment Toxicity
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)(2006)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.6 of the Listing Policy. 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 in favor of removing this water segment-pollutant combination from the Water Quality Limited Segments portion of the 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. This water body was originally listed in error as the samples used to place it on the 303(d) list in 1998 were not from this water body. There is not enough information available to keep this water body on the 303(d) list for sediment toxicity. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4342, Sediment Toxicity	Region 4
Ballona Creek

LOE ID:

2368

Pollutant:

Sediment Toxicity

LOE Subgroup:

Narrative Description Data

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

The water body was originally listed in error. There is a discrepancy in the nomenclature used to define Ballona Creek and the Estuary. In the Basin Plan, the transition between Creek and Estuary is at Centinela Blvd. Ballona Creek (above Centinela) is concrete-lined. Ballona Creek estuary (below Centinela) is soft-bottomed. In 1998, samples were inadvertently attributed to Ballona Creek but were actually collected from Ballona Creek Estuary. Sediment data used in the 1998 list appear to have been collected from soft-bottomed estuary sediments as opposed to the concrete-lined channel. Therefore, the listing for this pollutant in Ballona Creek was made in error.

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):


DECISION ID	4452	Region 4
Ballona Creek

Pollutant:	pH
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)(2006)
Revision Status	Original
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	>>This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Under section 4.2 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. There are exceedances of the pH basin plan water quality objective in both lines of evidence. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from 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. Five of 40 samples exceeded the pH WQO in one line of evidence and 1 of 22 exceeded in the other. The first line of evidence does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy and there were insufficient number of samples taken in the other data set to make an appropriate determination 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4452, pH	Region 4
Ballona Creek

LOE ID:

2344

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Five of 40 samples exceeded the water quality objective (SWRCB, 2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan WQO for inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waster discharges to protect aquatic life BUs.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One site.

Temporal Representation:

Fall and spring.

Environmental Conditions:

QAPP Information:

Los Angeles County Stormwater Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4452, pH	Region 4
Ballona Creek

LOE ID:

2343

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling interval. Four (4) samples exceeded the Basin Plan WQO (LACDPW, 2004c; 2004d).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan WQO for inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waster discharges to protect aquatic life BUs.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Twenty-two samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works.

Environmental Conditions:

Data 1-5 years old, environmental data measured at site, samples collected during multiple seasons. The Ballona Creek monitoring station is located at the existing stream gage station (Stream Gage No. F38C-R) between Sawtelle Boulevard and Sepulveda Boulevard in the City of Los Angeles. At this location, which was chosen to avoid tidal influences, the upstream tributary watershed of Ballona Creek is 88.8 square miles. The entire Ballona Creek Watershed is 127.1 square miles. At the gauging station, Ballona Creek is a concrete lined trapezoidal channel.

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	4880	Region 4
Ballona Creek

Pollutant:	Cadmium (sediment)
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. 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 Water Quality Limited Segments portion of the section 303(d) list. This conclusion is based on the staff findings that: 1. The sediment quality guideline used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. One out of 21 samples exceeded the sediment guideline, there is no sediment toxicity data available. This is not enough information to delist this water body for this pollutant. 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:	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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 4880, Cadmium (sediment)	Region 4
Ballona Creek

LOE ID:

2367

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

There were 21 samples collected, one of which exceeded the PEL for cadmium. Samples were collected by the Army Corps of Engineers (Heal the Bay, 2006).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Probable Effects Level (PEL) of 4.21 ug/g (dry weight) (Macdonald, et al., 1996).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Several samplings throughout the water body.

Temporal Representation:

October 5-6, 1999.

Environmental Conditions:

QAPP Information:

Army Corps of Engineers Sediment Chemistry Data.

QAPP Information Reference(s):


DECISION ID	4468	Region 4
Ballona Creek

Pollutant:	Ammonia
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)(2006)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	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. None of the samples exceed the water quality objective. 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. None of the 16 samples exceeded the ammonia one-hour average WQO. It was not possible to determine any exceedances of the 30-day average WQO since temperature data was not provided. The available data does not exceed 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.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4468, Ammonia	Region 4
Ballona Creek

LOE ID:

2340

Pollutant:

Ammonia

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 16 samples taken from 10/12/00 to 1/28/02 at one to two-week sampling interval. No sample exceeded the one-hour average WQO. It was not possible to determine any exceedances of the 30-day average WQO since temperature data was not provided (LACDPW, 2002-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

One hour average Basin Plan Water Quality Objectives revised in 2002 for freshwaters not designated COLD and or MIGR is dependent on pH and fish species, but not temperature. WQO ranged between 10.1mg/l at a pH of 7.9 and 48.8 mg/l at a pH of 6.5. The 30-day average WQO for waters not designated for spawning are dependent on pH and temperature. These WQOs have been adopted into the basin plan and are linked and applicable to protection of aquatic life beneficial uses.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 1/28/02 at approximately one to two week intervals.

Temporal Representation:

Sixteen (16) samples where taken during the wet and dry season from 10/12/00 to 1/28/02 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works.

Environmental Conditions:

Data Age is 3 to 4 years old. The Ballona Creek monitoring station is located at the existing stream gage station (Stream Gage No. F38C-R) between Sawtelle Boulevard and Sepulveda Boulevard in the City of Los Angeles. At this location, which was chosen to avoid tidal influences, the upstream tributary watershed of Ballona Creek is 88.8 square miles. The entire Ballona Creek Watershed is 127.1 square miles. At the gauging station, Ballona Creek is a concrete lined trapezoidal channel.

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program
(Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	4453	Region 4
Ballona Creek

Pollutant:	Diazinon
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)(2006)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	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. One sample exceeded the DFG diazinon numeric fresh water hazard assessment criteria used to interpret Basin Plan narrative pesticide water quality objective. 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. One of the 22 samples exceeded the DFG diazinon numeric fresh water hazard assessment criteria used to interpret Basin Plan narrative pesticide water quality objective. This does not exceed 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.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4453, Diazinon	Region 4
Ballona Creek

LOE ID:

2342

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling interval. One sample exceeded the DFG 0.16 ug/l 1-hour average guidelines generated by DFG as a fresh water hazard assessment criteria for the protection of aquatic life (LACDPW, 2003-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan narrative Water Quality Objective for pesticides are applicable for the protection aquatic life beneficial uses.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Numerical Diazinon guideline used to interpret Basin Plan narrative pesticide WQO. The numeric guidelines are 0.10 ug/l 4-day average and 0.16 ug/l 1-hour average generated by DFG as a fresh water hazard assessment criteria for the protection of aquatic life. Numerical Diazinon guideline used to interpret Basin Plan narrative pesticide WQO. The numeric guideline used is 0.16 micro-grams per liter 1-hour average generated by DFG as a fresh water acute hazard assessment criterion for the protection of aquatic life (Siepman & Finlayson, 2000; Finlayson, 2004).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Twenty-two (22) samples where taken during the wet and dry season from 10/12/00 to 4/30/04 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works.

Environmental Conditions:

Data Age is 1 to 4 years old. The Ballona Creek monitoring station is located at the existing stream gage station (Stream Gage No. F38C-R) between Sawtelle Boulevard and Sepulveda Boulevard in the City of Los Angeles. At this location, which was chosen to avoid tidal influences, the upstream tributary watershed of Ballona Creek is 88.8 square miles. The entire Ballona Creek Watershed is 127.1 square miles. At the gauging station, Ballona Creek is a concrete lined trapezoidal channel.

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	4466	Region 4
Ballona Creek

Pollutant:	Nickel
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)(2006)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	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. None of the samples exceed the CTR CCC criteria for dissolved nickel to protect aquatic life. 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. None of the 22 samples exceeded the CTR CCC criteria MCL and this does not exceed 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.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4466, Nickel	Region 4
Ballona Creek

LOE ID:

2341

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling interval. Total hardness samples collected in the water body when the Nickel samples were taken ranged from 52 to 530 mg/l. None of the samples exceeded the CTR - CCC criteria for Dissolved Nickel (LACDPW, 2003-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Freshwater CTR aquatic life criteria for dissolved fraction of nickel is expressed as a function of total hardness (mg/l) in the water body. The Criteria Continuous Concentration (CCC) equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4days) without deleterious effects.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	4402	Region 4
Ballona Creek

Pollutant:	Cyanide
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

Regional Board Conclusion:	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. There were sufficient number of exceedances of the CTR Cyanide criteria continuous concentration to list. 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. Three of 18 samples exceeded the CTR Cyanide criteria continuous concentration 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.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 4402, Cyanide	Region 4
Ballona Creek

LOE ID:

2339

Pollutant:

Cyanide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 18 samples out of which three samples exceeded the CTR Criteria Continuous Concentration of 0.0052 mg/l for protection of aquatic life (LACDPW, 2004c).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Criteria Continuous Concentration of 0.0052 mg/l is the highest concentration of Cyanide to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects applicable to protect aquatic life BUs.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning on 10/12/00 through 04/30/2003 at approximately one to two-week sampling interval.

Temporal Representation:

Eighteen samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two-week sampling interval as part of the Los Angeles County Storm water Monitoring report prepared by the Los Angeles County Department of Public Works.

Environmental Conditions:

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	6024	Region 4
Ballona Creek

Pollutant:	Coliform Bacteria
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)(2006)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
TMDL Name:	Ballona Creek Coliform (49)
TMDL Project Code:	393
Date TMDL Approved by USEPA:	03/26/2007
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. The USEPA final decision on the 2006 303(d) list was to move this listing to the 'being addressed by a USEPA approved TMDL' portion of the 303(d) list, because the Ballona Creek, Ballona Estuary and Sepulveda Channel Bacteria TMDL was approved by USEPA on March 26, 2007 (USEPA, 2007).

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 6024, Coliform Bacteria	Region 4
Ballona Creek

LOE ID:

2376

Pollutant:

Coliform Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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):


DECISION ID	4360	Region 4
Ballona Creek

Pollutant:	Copper, Dissolved
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)(2006)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Ballona Creek Metals (57)
TMDL Project Code:	396
Date TMDL Approved by USEPA:	12/22/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Four lines of evidence are available in the record to access this pollutant. The total number of sample exceedances from the combined four dissolved copper lines of evidence when compared with CTR dissolved copper criteria exceed the frequency allowed by the Listing Policy. The Ballona Creek Metals TMDL has been adopted by the Regional Board in July 2005 and by USEPA in December 2005. 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. 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. Thirty of 138 samples exceeded the dissolved copper CTR-CCC guidelines for copper and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. However, a TMDL is in place to address this pollutant in this water body. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4360, Copper, Dissolved	Region 4
Ballona Creek

LOE ID:

2363

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of 30 samples exceeded the CTR criterion. Detection limit was 10 μg/L (SCCWRP, 2004).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Copper Criterion for continuous concentration in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The aquatic life criteria will vary depending of total hardness reported. The criterion is linked and applicable for the protection of aquatic life Beneficial Uses.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The metals data from SCCWRP were from a characterization study of Ballona Creek and Estuary to identify relative metals contributions of runoff discharges during dry conditions. Twelve in-stream sites, including nine from Ballona Creek and three of the in-stream sites in the estuary. One of the storm drains was Sepulveda Canyon Channel and this data was used to assess conditions for that listed reach.

Temporal Representation:

Sampling was conducted on May 17, July 16, and September 24, 2003.

Environmental Conditions:

These samples represent dry-weather conditions.

QAPP Information:

Southern California Coastal Water Research Project.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4360, Copper, Dissolved	Region 4
Ballona Creek

LOE ID:

2362

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling intervals. Six (6) samples exceeded the Copper Continuous Criterion Concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects (LACDPW, 2003-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Twenty-two (22) samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works.

Environmental Conditions:

The Ballona Creek monitoring station is located at the existing stream gauge station (Stream Gauge No. F38C-R) between Sawtelle Boulevard and Sepulveda Boulevard in the City of Los Angeles. At this location, which was chosen to avoid tidal influences, the upstream tributary watershed of Ballona Creek is 88.8 square miles. The entire Ballona Creek Watershed is 127.1 square miles. At the gauging station, Ballona Creek is a concrete lined trapezoidal channel.

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4360, Copper, Dissolved	Region 4
Ballona Creek

LOE ID:

2364

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Seven of 48 samples exceeded the CTR criterion. The detection limit is 10 ug/L (LACDPW, 2003-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Copper Criterion for continuous concentration in water for the protection of aquatic life.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The metals data from the City of Los Angeles were from four locations along Ballona Creek at National Boulevard, Overland Avenue, Centinela Boulevard, and Pacific Avenue. The data from National and Overland Boulevards are representative of Ballona Creek Reaches 1 and 2, respectively.

Temporal Representation:

Sampled on a monthly basis between January 2002 through May 2003.

Environmental Conditions:

Samples are representative of dry-weather conditions. A hardness value of 300 mg/L was used to calculate the water quality criterion.

QAPP Information:

City of Los Angeles.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4360, Copper, Dissolved	Region 4
Ballona Creek

LOE ID:

2361

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Thirty-eight water samples, 17 samples exceeding acute criterion (LACDPW, 2003-2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule. Acute criterion.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected spatially along Ballona Creek.

Temporal Representation:

Fall, spring, winter, summer in different years.

Environmental Conditions:

Data is 1-5 years old, data measured in water body during these years, environmental conditions (winter, spring in different years).

QAPP Information:

Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	7167	Region 4
Ballona Creek

Pollutant:	Lead
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)(2006)
Revision Status	Original
Sources:	Source Unknown
TMDL Name:	Ballona Creek Metals (57)
TMDL Project Code:	396
Date TMDL Approved by USEPA:	12/22/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for delisting under section 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status. Five 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 in favor of removing this water segment-pollutant combination from 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. Six out of 90 samples exceeded the CTR criterion for lead and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. The USEPA final decision for the 2006 303(d) list added this listing to the 'being addressed by USEPA approved TMDL' portion of the 303(d) List because the Ballona Creek Metals TMDL was adopted by the Regional Board in July 2005 and by USEPA in December 2005. (USEPA, 2007).

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 7167, Lead	Region 4
Ballona Creek

LOE ID:

2356

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Thirty-eight water samples, 5 above chronic criterion (SWRCB, 2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Lead Criterion for continuous concentration in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The aquatic life criteria will vary depending on total hardness reported.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples collected spatially along Ballona Creek.

Temporal Representation:

Fall, winter, spring, summer in different years.

Environmental Conditions:

Data is 1-5 years old.

QAPP Information:

Los Angeles County Stormwater Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7167, Lead	Region 4
Ballona Creek

LOE ID:

2358

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Seven of 48 measurements were analyzed. The dry weather detection limits in the City of Los Angeles data exceeded the water quality criterion and this precluded evaluation against the CTR standards. The detection limit was 10 ug/L (USEPA and LARWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Sampled on a monthly basis between January 2002 through May 2003.

Environmental Conditions:

Samples are representative of dry-weather conditions. A hardness value of 300 mg/L was used to calculate the water quality criterion.

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7167, Lead	Region 4
Ballona Creek

LOE ID:

2359

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of 30 measurements exceeded the water criterion. The detection limit is 5 ug/L (USEPA and LARWQCB, 2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The metals data from SCCWRP were from a characterization study of Ballona Creek and Estuary to identify relative metals contributions of runoff discharges during dry conditions. Sampling occurred at 12 in-stream sites and at the discharge of 35-40 storm drains (number depended on whether there was flow from the drain on the sampling day). Nine of the in-stream sites were from the Creek and three of the in-stream sites were from the estuary. One of the storm drains was Sepulveda Canyon Channel and this data was used to assess conditions for that listed reach.

Temporal Representation:

Sampling was conducted on May 17, July 16, and September 24, 2003.

Environmental Conditions:

Samples are representative of dry-weather conditions. A hardness value of 300 mg/L was used to calculate the water quality criterion.

QAPP Information:

Southern California Coastal Water Research Project.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7167, Lead	Region 4
Ballona Creek

LOE ID:

2357

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling intervals. One (1) sample exceeded the Lead Continuous Criterion Concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects (LACDPW, 2004c).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	4377	Region 4
Ballona Creek

Pollutant:	Selenium
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)(2006)
Revision Status	Original
Sources:	Source Unknown
TMDL Name:	Ballona Creek Metals (57)
TMDL Project Code:	396
Date TMDL Approved by USEPA:	12/22/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	>>This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status. Five numeric 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 in favor of removing this water segment-pollutant combination from 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. Six of 102 samples exceeded the CTR Selenium criterion. And this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. The USEPA final decision for the 2006 303(d) list added this listing to the 'being addressed by USEPA approved TMDL' portion of the 303(d) List because the Ballona Creek Metals TMDL was approved by the Regional Board in 7/2005 and by USEPA in 12/2005. (USEPA, 2007).

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4377, Selenium	Region 4
Ballona Creek

LOE ID:

2354

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

No samples exceed the water quality criterion out of 30 samples. The detection limit was 100 ug/L (USEPA and LARWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Criteria Continuous Concentration of 5 ug/l is the highest concentration of Selenium to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects applicable to protect aquatic life BUs.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The metals data from SCCWRP were from a characterization study of Ballona Creek and Estuary to identify relative metals contributions of runoff discharges during dry conditions. Twelve in-stream sites and at the discharge of 35-40 storm drains were sampled (number depended on whether there was flow from the drain on the sampling day). Nine of the in-stream sites were from the Creek and three of the in-stream sites were from the estuary. One of the storm drains was Sepulveda Canyon Channel and this data was used to assess conditions for that listed reach.

Temporal Representation:

Sampling was conducted on May 17, July 16, and September 24, 2003.

Environmental Conditions:

Samples represent dry-weather conditions.

QAPP Information:

Southern California Coastal Water Research Project.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4377, Selenium	Region 4
Ballona Creek

LOE ID:

2353

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Two measurements of 55 exceed the water quality criterion. Three measurements greater than detection limit (USEPA and LAWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sampling location.

Temporal Representation:

Samples collected between 1996 and 2002.

Environmental Conditions:

These are wet-weather data taken from the Ballona Creek Metals TMDL. These measurements overlap with other measurements collected by LACDPW.

QAPP Information:

Los Angeles Count Department of Public Works.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4377, Selenium	Region 4
Ballona Creek

LOE ID:

2352

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling intervals. One (1) sample exceeded the CTR Selenium Continuous Criterion Concentration (LACDPW, 2004c).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4377, Selenium	Region 4
Ballona Creek

LOE ID:

2351

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Twenty-five water samples, 3 samples exceeding (SWRCB, 2003).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled mostly during the wet season.

Temporal Representation:

Samples collected from 1997 through 1999 in the fall, spring, summer, and winter. Most samples collected during wet season.

Environmental Conditions:

QAPP Information:

Los Angeles County Department of Public Works.

QAPP Information Reference(s):


DECISION ID	6879	Region 4
Ballona Creek

Pollutant:	Toxicity
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)(2006)
Revision Status	Original
Sources:	Source Unknown
TMDL Name:	Ballona Creek Toxics (55)
TMDL Project Code:	235
Date TMDL Approved by USEPA:	01/01/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	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 Ballona Creek Metals TMDL was approved by the RWQCB in 2005 and subsequently approved by USEPA in 2005. Based on the readily available 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:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 6879, Toxicity	Region 4
Ballona Creek

LOE ID:

2374

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

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):


DECISION ID	4106	Region 4
Ballona Creek

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 (being addressed by USEPA approved TMDL)(2006)
Revision Status	Original
Sources:	Source Unknown
TMDL Name:	Ballona Creek Trash (51)
TMDL Project Code:	608
Date TMDL Approved by USEPA:	01/01/2001
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for listing under sections 2.2 and 3.11 of the Listing Policy. Under these sections of the Policy, a minimum of one line of evidence is needed to assess listing status. The Ballona Creek Trash TMDL was approved by the RWQCB in 2001 and subsequently approved by USEPA. This water segment-pollutant combination was moved off the section 303(d) list during the 2002 listing cycle only because a TMDL had been completed. No substantial evidence in the record shows that standards are met. 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:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4106, Trash	Region 4
Ballona Creek

LOE ID:

2365

Pollutant:

Trash

LOE Subgroup:

Pollutant-Nuisance

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

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):


DECISION ID	6023	Region 4
Ballona Creek

Pollutant:	Viruses (enteric)
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)(2006)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
TMDL Name:	Ballona Creek Coliform (49)
TMDL Project Code:	393
Date TMDL Approved by USEPA:	03/26/2007
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. A TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. While many of the TMDL implementation measures will address both impairments due to fecal indicator bacteria and enteric viruses, some types of treatment measures (e.g. disinfection) may not adequately address enteric viruses. New standards for enteric viruses are being developed and when they become available, the Regional Board will reconsider the TMDL to incorporate these new standards and will work with responsible agencies to revise the implementation measures as necessary to ensure that these new standards are achieved in the water body. The USEPA final decision on the 2006 303(d) list was to move this listing to the 'being addressed by a USEPA approved TMDL' portion of the 303(d) list, because the Ballona Creek, Ballona Estuary and Sepulveda Channel Bacteria TMDL was approved by USEPA on March 26, 2007 (USEPA, 2007).

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 6023, Viruses (enteric)	Region 4
Ballona Creek

LOE ID:

2375

Pollutant:

Viruses (enteric)

LOE Subgroup:

Pollutant-Water

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecifiec--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):


DECISION ID	4451	Region 4
Ballona Creek

Pollutant:	Zinc
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)(2006)
Revision Status	Original
Sources:	Source Unknown
TMDL Name:	Ballona Creek Metals (57)
TMDL Project Code:	396
Date TMDL Approved by USEPA:	12/22/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	>>This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status. Multiple lines of evidence are available in the administrative record to support a decision to delist this water body-pollutant combination from the 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. Nine of 154 samples exceeded the CTR Zinc criterion and a TMDL has been approved. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. The USEPA final decision for the 2006 303(d) list added this listing to the 'being addressed by USEPA approved TMDL' portion of the 303(d) List because the Ballona Creek Metals TMDL was approved by the Regional Board in 7/2005 and by USEPA in 12/2005 (USEPA, 2007).

Regional Board Decision Recommendation:	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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4451, Zinc	Region 4
Ballona Creek

LOE ID:

2348

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Out of thirty samples, no measurements exceed the water quality criterion. Detection limit was 20 ug/L (USEPA and LARWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Zinc Criterion for continuous concentration in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The aquatic life criteria will vary depending of total hardness reported. The criterion is linked and applicable for the protection of aquatic life Beneficial Uses.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Sampling was conducted on May 17, July 16, and September 24, 2003.

Environmental Conditions:

Samples represent dry-weather conditions. The water quality criterion was calculated with a hardness value of 300 mg/L.

QAPP Information:

Southern California Coastal Water Research Project.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4451, Zinc	Region 4
Ballona Creek

LOE ID:

2349

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Out of forty-seven samples, 2 exceed the water quality criterion. Detection limit was 10 ug/L (USEPA and LARWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Sampled on a monthly basis between January 2002 through May 2003.

Environmental Conditions:

Samples are representative of dry-weather conditions. A hardness value of 300 mg/L was used to calculate the water quality criterion.

QAPP Information:

City of Los Angeles.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4451, Zinc	Region 4
Ballona Creek

LOE ID:

2347

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling intervals. One (1) sample exceeded the Zinc Continuous Criterion Concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects (LACDPW, 2004c; 2004d).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4451, Zinc	Region 4
Ballona Creek

LOE ID:

2346

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Six of fifty-five water samples exceeded the CTR criterion (USEPA and LAWQCB, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

To assess wet-weather conditions, evaluated dissolved metals and hardness data collected from Ballona Creek by the LACDPW storm water program at Sawtelle Boulevard.

Temporal Representation:

Samples collected 1996 to 2000.

Environmental Conditions:

The storm water data were compared to the freshwater CTR values based on the actual hardness measured for each sample.

QAPP Information:

Los Angeles County Department of Public Works.

QAPP Information Reference(s):