Draft 2008 California 303(d)/305(b) Integrated Report

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name:	Kitchen Creek
Water Body ID:	CAR9116000020011025105327
Water Body Type:	River & Stream


DECISION ID	16500

Pollutant:	Benthic Community Effects
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollution

Weight of Evidence:	Benthic Community Effects is being considered for placement on the section 303(d) list under sections 3.9 and 3.2 of the Listing Policy. Under section 3.9, an additional line of evidence associating the Benthic Community Effects with a water or sediment concentration of pollutants is necessary to assess listing status. One line of evidence is available in the administrative record to assess this indicator. 0 of 2 samples exceeded the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing Benthic Community Effects in this water segment 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. 0 of 2 samples exceeded the Index of Biological Integrity (IBI) value of "poor" water quality for this area and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 5 samples is needed for application of Table 3.2. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

RWQCB Board Decision / Staff Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

SWRCB Board Decision / Staff Recommendation:

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 16500


LOE ID:	26407

Pollutant:	Benthic Community Effects
LOE Subgroup:	Adverse Biological Responses
Matrix:	Water
Fraction:	None

Beneficial Use:	Warm Freshwater Habitat

Number of Samples:	2
Number of Exceedances:	0

Data and Information Type:	Benthic macroinvertebrate surveys
Data Used to Assess Water Quality:	Two samples of IBI data were taken on May 2001 at one sampling site. None of the samples exceeded the IBI impairment threshold.
Data Reference:	Fish and Game IBI Data

Water Quality Objective/Criterion:	From the San Diego Basin Plan the objective is: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board.
Objective/Criterion Reference:	Water Quality Control Plan for the San Diego Basin (9).

Evaluation Guideline:	The Index of Biological Integrity (IBI) is an analytical tool that can be used to assess the biological and physical condition of streams and rivers within a zero to one hundred scoring range: Very Poor 0-19, Poor 20-39, Fair 40-59, Good 60- 79, Very Good 80-100. The IBI score of 39 was set as an impairment threshold because it is a statistical criterion of two standard deviations below the mean reference site score which defines the boundary between 'fair' and 'poor' IBI creek conditions. (Ode, p. 9)
Guideline Reference:	"A Quantitative Tool for Assessing the Integrity of Southern Coastal California Streams". Environmental Management. Volume 35, number 1 (2005): 1-13.

Spatial Representation:	Samples were collected at one site: 911KCKCRx on Kitchen Creek.
Temporal Representation:	Sampling occurred during two events on May 2001.
Environmental Conditions:
QAPP Information:	Quality Control for collection and identification was conducted in accordance with the Quality Assurance Project Plan for the California Stream Bioassessment Procedure and the State of California, California Monitoring an Assessment Program: "CMAP", Quality Assurance Project Plan.
QAPP Information Reference(s):	State of California, California Monitoring and Assessment Program: "CMAP".
	Quality Assurance Project Plan for the California Stream Bioassessment Procedure
	The San Diego Stream Team Quality Assurance Project Plan


DECISION ID	4784

Pollutant:	Benthic-Macroinvertebrate Bioassessments
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:	Pollution

Weight of Evidence:	This pollutant is being considered for placement on the section 303(d) list under section 3.9 of the Listing Policy. Under section 3.9 at least 2 lines of evidence are necessary to assess listing status. Two lines of evidence is available in the administrative record to assess this pollutant. None of the 138 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. None of 138 samples exceeded the IBI guideline. One line of evidence in the record to assess this pollutant consists of bioassessment data. However, this information on its own is insufficient to determine with the confidence and power required by the Listing Policy since this data is not associated with water or sediment concentrations of pollutants (Policy Section 3.9).

RWQCB Board Decision / Staff Recommendation:	No new data were assessed for 2008. The decision has not changed.

SWRCB Board Decision / Staff Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 4784


LOE ID:	3423

Pollutant:	Benthic-Macroinvertebrate Bioassessments
LOE Subgroup:	Subgroup Missing
Matrix:	-N/A
Fraction:	Total

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	0
Number of Exceedances:	0

Data and Information Type:	Benthic macroinvertebrate surveys
Data Used to Assess Water Quality:	Data were collected by the Stream Team in 1998. Taxa richness was 17 during both seasons. EPT taxa were 7 in Spring and 9 in Fall. EPT index was 57.8 in Spring and 65.9 in Fall. The tolerance value was 3.3 and 3.9. There appeared to be a good balance of all 5 types of feeding groups during both sampling periods. (Stream Team, 2001).
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:
Objective/Criterion Reference:

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creel site KTC2.
Temporal Representation:	Samples were collected in Spring and Fall of 1998.
Environmental Conditions:
QAPP Information:	QA Info Missing
QAPP Information Reference(s):


LOE ID:	3422

Pollutant:	Benthic-Macroinvertebrate Bioassessments
LOE Subgroup:	Subgroup Missing
Matrix:	-N/A
Fraction:	Total

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	134
Number of Exceedances:

Data and Information Type:	Benthic macroinvertebrate surveys
Data Used to Assess Water Quality:	Data were collected by the City of San Diego. The data summary is as follows: Total Specimens: 134, EPT Index: 8, Total Ephemeroptera: 35, Total Plecoptera: 4, Total Tricoptera: 82, Total Diptera:13. (SDRWQCB, 2002m).
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:
Objective/Criterion Reference:

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek. Exact location was not reported.
Temporal Representation:	Temporal representation was not reported. However, other data in the dataset is from 1997.
Environmental Conditions:
QAPP Information:	QA Info Missing
QAPP Information Reference(s):


DECISION ID	4698

Pollutant:	Oxygen, Dissolved
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

Weight of Evidence:	This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are 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 28 samples from two combined lines of evidence exceeded the 5.0 dissolved oxygen Basin Plan water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 3. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

RWQCB Board Decision / Staff Recommendation:	No new data were assessed for 2008. The decision has not changed.

SWRCB Board Decision / Staff Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 4698


LOE ID:	3416

Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	8
Number of Exceedances:	0

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. in 1997. None of the 8 samples were in exceedance of any of the above standards. (SWRCB, 2003).
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters with a WARM beneficial use, the WQO for Dissolved Oxygen is a minimum of 5.0 mg/L. For COLD beneficial uses, the WQO is 6.0 mg/L and for all other beneficial uses, the WQO is 7.0 mg/L. For inland surface waters and all beneficial uses, the WQO of 7.0 mg/L is the annual mean concentration not to be less than this more than 10% of the time.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek site KTC2.
Temporal Representation:	Samples were collected on 03/12/1997 and 06/18/1997. In 03/1997, 3 samples were collected over a period of 6 minutes in the morning and in 06/1997, 5 samples were collected over a period of 3 minutes in the morning.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


LOE ID:	3417

Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	21
Number of Exceedances:	0

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. in 1997 and 1998. None of the 21 samples were in exceedance. (SWRCB, 2003)
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters with a WARM beneficial use, the WQO for Dissolved Oxygen is a minimum of 5.0 mg/L. For COLD beneficial uses, the WQO is 6.0 mg/L and for all other beneficial uses, the WQO is 7.0 mg/L. For inland surface waters and all beneficial uses, the WQO of 7.0 mg/L is the annual mean concentration not to be less than this more than 10% of the time.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek site KTC5.
Temporal Representation:	Samples were collected on 01/01/1997, 04/01/1997, 05/19/1997, 06/18/1997, and 01/29/1998. For all sampling days, 3-5 samples were collected over the course of 30 minutes or less in the morning, or early afternoon.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


DECISION ID	4696

Pollutant:	Total Dissolved Solids
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

Weight of Evidence:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 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. 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. Four of the 29 samples exceeded the 500 mg/L TDL Basin Plan water quality objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 3. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

RWQCB Board Decision / Staff Recommendation:	No new data were assessed for 2008. The decision has not changed.

SWRCB Board Decision / Staff Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 4696


LOE ID:	3420

Pollutant:	Total Dissolved Solids
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total Dissolved

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	8
Number of Exceedances:	0

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept in 1997. None of the 8 samples were in exceedance. (SWRCB, 2003).
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for TDS is 500 mg/L. This concentration is not to be exceeded more than 10% of the time during any one year period.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek site KTC2
Temporal Representation:	Samples were collected on 03/12/1997 and 06/18/1997. Three to five samples were collected on each day over a 6 minute period in the morning.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


LOE ID:	3421

Pollutant:	Total Dissolved Solids
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total Dissolved

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	21
Number of Exceedances:	4

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. in 1997 and 1998. Four of the 21 samples were in exceedance. All 4 samples were collected on 01/29/1998. (SWRCB, 2003).
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for TDS is 500 mg/L. This concentration is not to be exceeded more than 10% of the time during any one year period.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek site KTC5.
Temporal Representation:	Samples were collected on 01/01/1997, 04/01/1997, 05/19/1997, 06/18/1997, and 01/29/1998. Samples were collected 3-5 times over a 30 mintues period in the morning or early afternoon.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


DECISION ID	4783

Pollutant:	Turbidity
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

Weight of Evidence:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 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. No samples exceeded the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is insufficient 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: 4. It cannot be determine if the data quality requirements of section 6.1.4 of the Policy are satisfied due to the absence of the information. 5. The data used does not satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. The one sample did not exceed the 5 NTU water quality objective and this does not exceed the allowable frequency listed in Table 3.2 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.

RWQCB Board Decision / Staff Recommendation:	No new data were assessed for 2008. The decision has not changed.

SWRCB Board Decision / Staff Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 4783


LOE ID:	3424

Pollutant:	Turbidity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	1
Number of Exceedances:	0

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. in 1997. None of 1 sample was in exceedance.
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Turbidity is 5 ntu. For other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek at site KTC5.
Temporal Representation:	One sample was collected on 05/19/1997.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


DECISION ID	4697

Pollutant:	pH
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

Weight of Evidence:	This pollutant is being considered for listing on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 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. Based on the readily available data and information, the weight of evidence indicates that there is insufficient 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. One of 29 samples from two combined lines of evidence exceeded the 6 - 8.5 pH Basin Plan water quality objective and this does not exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 3. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

RWQCB Board Decision / Staff Recommendation:	No new data were assessed for 2008. The decision has not changed.

SWRCB Board Decision / Staff Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not exceeded.

USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 4697


LOE ID:	3418

Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	8
Number of Exceedances:	0

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. in 1997. None of the 8 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for pH is 6.5 (minimum) to 8.5 (maximum).
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek site KTC2.
Temporal Representation:	Samples were collected 3-5 times over a period of 6 minutes or less on 03/12/1997 and 06/18/1997.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):


LOE ID:	3419

Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total

Beneficial Use:	Municipal & Domestic Supply

Number of Samples:	21
Number of Exceedances:	5

Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego in 1997 and 1998. Five of the 21 samples were in exceedance. Since all 5 exceedances occurred on one day, 05/19/1997, it is averaged as one exceedence.
Data Reference:	Placeholder reference 2006 303(d)

Water Quality Objective/Criterion:	From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for pH is 6.5 (minimum) to 8.5 (maximum).
Objective/Criterion Reference:	Placeholder reference 2006 303(d)

Evaluation Guideline:
Guideline Reference:

Spatial Representation:	Samples were collected at Kitchen Creek at site KTC5.
Temporal Representation:	Samples were collected on 01/01/1997, 04/01/1997, 05/19/1997, 06/18/1997, and 01/29/1998.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):