Draft California 2024 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 8 - Santa Ana Region

Water Body Name:	Rathbone (Rathbun) Creek
Water Body ID:	CAR8017100019990211112232
Water Body Type:	River & Stream


DECISION ID	132348	Region 8
Rathbone (Rathbun) Creek

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

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 33 water samples exceed the COLD Lead criterion. 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 CWA 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. Zero of the 33 water samples exceed the COLD Lead criterion 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:	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 applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 132348, Lead	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234723

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 15 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District for their sewage treatment plant.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule for lead (criterion changes from day to day because they are hardness dependent): 3/19/94: 651.25 ug/l, 1/23/95: 301.43 ug/l, 3/10/95: 207.41 ug/l, 12/12/95: 266.82 ug/l, 1/31/96; 248.85 ug/l, 2/19/96: 262.12 ug/l, 3/4/96: 289.11 ug/l, 3/13/96: 330.60 ug/l, 10/30/96: 71.40 ug/l, 11/21/96: 102.97 ug/l, 12/9/96: 184.83 ug/l, 11/26/97: 36.39 ug/l, 1/9/98: 197.31 ug/l, 2/3/98: 402.28 ug/l, 3/25/98: 184.83 ug/l.

Guideline Reference:

Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency

Spatial Representation:

The 15 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 15 samples were taken on 3/19/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database.

Line of Evidence (LOE) for Decision ID 132348, Lead	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234739

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected, none exceeded the standards.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for lead (this criteria varies according to hardness as follows): 1/23/95: 419.92 ug/l, 3/10/95: 193.55 ug/l,12/12/95: 234.42 ug/l, 1/31/96: 184.83 ug/l, 2/19/96: 476.82 ug/l, 3/4/96: 492.04 ug/l, 3/13/96: 387.71 ug/l, 10/30/96: 262.12 ug/l, 11/19/96: 330.60 ug/l, 12/9/96: 184.83 ug/l, 11/26/97: 136.80 ug/l, 1/9/98: 172.54 ug/l, 2/3/98: 302.80 ug/l, 3/25/98: 172.54 ug/l.

Guideline Reference:

Spatial Representation:

The 14 samples were taken at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 14 samples were taken on the following dates: 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/19/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 132348, Lead	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234755

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for lead: 6/8/94: 430.28 ug/l, 6/6/95: 343.28 ug/l, 8/14/95: 337.63 ug/l, 7/29/98: 330.60 ug/l.

Guideline Reference:

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	133039	Region 8
Rathbone (Rathbun) Creek

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

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available

Regional Board Decision 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

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 be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 133039, Oxygen, Dissolved	Region 8
Rathbone (Rathbun) Creek

LOE ID:

236999

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB8 Monitoring data for Rathbone (Rathbun) Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved oxygen content of surface waters shall not be depressed below 6 mg/L for waters designated COLD as a result of controllable water quality factors (Water Quality Control Plan, Santa Ana Basin, Chapter 4 Water Quality Objectives, Inland Surface Waters).

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801BBRC01 (Rathbun Creek below Sandalwood Dr).

Temporal Representation:

The samples were collected between the dates of 2018-05-30 and 2019-06-10

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 133039, Oxygen, Dissolved	Region 8
Rathbone (Rathbun) Creek

LOE ID:

236969

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB8 Monitoring data for Rathbone (Rathbun) Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801BBRC02 (Rathbun Creek below Goldmine Dr).

Temporal Representation:

The samples were collected between the dates of 2018-05-28 and 2019-06-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 133039, Oxygen, Dissolved	Region 8
Rathbone (Rathbun) Creek

LOE ID:

237127

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB8 Monitoring data for Rathbone (Rathbun) Creek to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801S31343 (Rathbun Creek SMC Random Site 31343).

Temporal Representation:

The samples were collected between the dates of 2018-05-28 and 2019-06-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	132349	Region 8
Rathbone (Rathbun) Creek

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

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 33 samples exceed the COLD Silver criterion. 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 CWA 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. Zero of the 33 samples exceed the COLD Silver criterion 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:	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 applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 132349, Silver	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234740

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected, none exceeded the standards.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for silver (this criteria varies according to hardness as follows): 1/23/95: 37.1 ug/l, 3/10/95:13.03 ug/l, 12/12/95: 16.88 ug/l, 1/31/96: 12.24 ug/l, 2/19/96: 44.05 ug/l, 3/4/96: 45.96 ug/l, 3/13/96: 33.31 ug/l, 10/30/96: 19.63 ug/l, 11/19/96: 26.86 ug/l, 12/9/96: 12.24 ug/l, 11/26/97: 8.15 ug/l, 1/9/98: 11.15 ug/l, 2/3/98: 23.85 ug/l, 3/25/98: 11.15 ug/l.

Guideline Reference:

Spatial Representation:

The 14 samples were taken at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 14 samples were taken on the following dates: 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/19/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 132349, Silver	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234724

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule for silver (criterion changes from day to day because they are hardness dependent) : 3/19/94:67.12 ug/l 1/23/95: 23.70 ug/l 3/10/95: 14.30 ug/l 12/12/95: 20.31 ug/l 1/31/96: 18.30 ug/l 2/19/96: 19.63 ug/l 3/4/96: 22.41 ug/l 3/13/96:26.86 ug/l,10/30/96: 3.39 ug/l, 11/21/96: 5.55 ug/l 12/9/96: 12.24 ug/l 11/26/97: 1.36 ug/l 1/9/98: 13.37 ug/l 2/3/98: 35.01 ug/l 3/25/98: 12.24 ug/l.

Guideline Reference:

Spatial Representation:

The 15 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 15 samples were taken on 3/19/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 132349, Silver	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234756

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for silver: 6/8/94: 38.34 ug/l, 6/6/95: 28.26 ug/l, 8/14/95: 27.63 ug/l, 7/29/98:26.86 ug/l.

Guideline Reference:

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	132350	Region 8
Rathbone (Rathbun) Creek

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

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Zero samples exceeded the objectives, guidelines, or criteria for beneficial uses applicable to this water segment-pollutant combination, which is less than the minimum number of exceedances needed to place the water segment on the section CWA section 303(d) List for toxicants (Table 3.1 of the Listing Policy). The data used satisfies the data quality requirements (section 6.1.4) and data quantity requirements (section 6.1.5) of the Listing Policy. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. 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 CWA section 303(d) List.

Regional Board Decision 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 applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 132350, Zinc	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234738

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule for zinc (criterion changes from day to day because they are hardness dependent): 3/19/94:477.27 ug/l, 1/23/95: 285.81 ug/l, 3/10/95: 222.85 ug/l 12/12/95: 264.84 ug/l 1/31/96: 251.58 ug/l 2/19/96: 260.43 ug/l 3/4/96: 277.98 ug/l, 3/13/96: 303.94 ug/l, 10/30/96: 109.58 ug/l, 11/21/96: 139.83 ug/l, 12/9/96: 206.40 ug/l, 11/26/97: 69.97 ug/l, 1/9/98: 215.57 ug/l, 2/3/98: 346.36 ug/l, 3/25/98: 206.40 ug/l.

Guideline Reference:

Spatial Representation:

The 15 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 15 samples were taken on 3/19/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 132350, Zinc	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234741

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected, none exceeded the standards.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for zinc (this criteria varies according to hardness as follows): 1/23/95: 356.38 ug/l, 3/10/95: 212.82 ug/l, 12/12/95: 241.77 ug/l, 1/31/96: 206.40 ug/l, 2/19/96: 387.83 ug/l, 3/4/96: 396.03 ug/l, 3/13/96: 337.94 ug/l, 10/30/96: 260.43 ug/l, 11/19/96: 303.94 ug/l, 12/9/96: 206.4 ug/l, 11/26/97: 168.93 ug/l, 1/9/98: 197.16 ug/l, 2/3/98: 286.68 ug/l, 3/25/98: 197.16 ug/l.

Guideline Reference:

Spatial Representation:

The 14 samples were taken at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 14 samples were taken on the following dates: 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/19/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98 and 3/25/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 132350, Zinc	Region 8
Rathbone (Rathbun) Creek

LOE ID:

234757

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The concentration of toxic substance in the water column, sediments or biota shall not adversely affect beneficial uses (SARWQCB, 1995).

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life for zinc: 6/8/94: 362.21 ug/l,6/6/95: 311.64 ug/l, 8/14/95: 308.22 ug/l 7/29/98: 303.94 ug/l.

Guideline Reference:

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	133040	Region 8
Rathbone (Rathbun) Creek

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)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

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.

Line of Evidence (LOE) for Decision ID 133040, pH	Region 8
Rathbone (Rathbun) Creek

LOE ID:

237299

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The pH of inland surface waters shall not be raised above 8.5 or depressed below 6.5 as a result of controllable water quality factors (The Water Quality Control Plan, Santa Ana Basin, Chapter 4 Water Quality Objectives, Inland Surface Waters).

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801S31343 (Rathbun Creek SMC Random Site 31343).

Temporal Representation:

The samples were collected between the dates of 2018-05-28 and 2019-06-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 133040, pH	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5793

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Only one sample collected and it did not exceed the numerical objective range in the Basin Plan of 6.5 - 8.5 pH units. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District for its sewage treatment plant.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan: The pH of inland surface waters shall not be raised above 8.5 or depressed below 6.5
as a result of controllable water quality factors.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Water Quality Control Plan for the Santa Ana River Basin

Spatial Representation:

The one sample was collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake

Temporal Representation:

The one sample was collected on 7/29/98

Environmental Conditions:

The sample was a dry weather measurement

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 133040, pH	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5808

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 3 samples collected, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District's storm water program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan: The pH of inland surface waters shall not be raised above 8.5 or depressed below 6.5 as a result of controllable water quality factors.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Santa Ana Region's Basin Plan: minimum 6.5 pH units and maximum 8.5 pH units.

Guideline Reference:

Water Quality Control Plan for the Santa Ana River Basin

Spatial Representation:

The 3 samples were collected at one station on Rathbone Creek's southerly slope, 200¿ west of Moonridge Road and Sand Canyon Road, adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 3 samples were taken on July 30, 1996, August 20, 1997, and July 29, 1998.

Environmental Conditions:

The samples were collected during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 133040, pH	Region 8
Rathbone (Rathbun) Creek

LOE ID:

237300

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB8 Monitoring data for Rathbone (Rathbun) Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801BBRC01 (Rathbun Creek below Sandalwood Dr).

Temporal Representation:

The samples were collected between the dates of 2018-05-30 and 2019-06-10

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 133040, pH	Region 8
Rathbone (Rathbun) Creek

LOE ID:

237298

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 8.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan, Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 801BBRC02 (Rathbun Creek below Goldmine Dr).

Temporal Representation:

The samples were collected between the dates of 2018-05-28 and 2019-06-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements..

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	76623	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Arsenic
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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Four (4) 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 fifty-one (51) samples exceeded the California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 76623, Arsenic	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26451

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 16 samples collected, none exceeded the standards/guidelines listed.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l.

Guideline Reference:

Spatial Representation:

The 16 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 16 samples were taken on 3/19/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00.

Environmental Conditions:

The samples were collected during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 76623, Arsenic	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26454

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 15 samples collected none exceeded the standards/guidelines. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l.

Guideline Reference:

Spatial Representation:

The 15 samples were collected at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 15 samples were taken on 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/19/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00.

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 76623, Arsenic	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26455

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 16 samples collected, none exceeded the standards/guidelines listed.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life: arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l;

Guideline Reference:

Spatial Representation:

The 16 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 16 samples were taken on 3/19/94, 1/23/95/ 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 10/30/96,11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00.

Environmental Conditions:

The samples were collected in the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 76623, Arsenic	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26450

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l;

Guideline Reference:

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data's quality is deemed acceptable because it was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	69875	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Iron
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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Six lines of evidence are available in the administrative record to assess this pollutant. One (1) of the samples exceed the chronic recommended criteria. 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 (1) of 31 samples exceeded the chronic EPA Recommended Water Quality Criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. However the 54 samples that exceed the chronic criteria were collected during the wet weather and wet weather samples should not be compared to chronic criteria. There are no acute criteria for iron. 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

28287

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 7 samples taken, 1 exceeded the reccomended criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

US EPA National Ambient Water Quality Criteria Toxicity Chronic Reccomended criteria: iron 4-day avg. 1000 ug/l.

Guideline Reference:

Spatial Representation:

The samples were taken at one station on the Rathbone Creek's southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 6/8/94 through 7/29/98.

Environmental Conditions:

The samples were collected in the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5884

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

There is no applicable critia to apply to this data. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 thorugh 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26463

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

USEPA National Ambient Water Quality Criteria Toxicity: iron 4-day avg. 1,000 ug/l

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5902

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

There is no applicable critia to apply to this data. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The 21 samples were taken at one station on the Rathbone Creek's southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting on 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5875

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

There is no applicable critia to apply to this data. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/2000.

Environmental Conditions:

The samples were taken during the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69875, Iron	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5899

Pollutant:

Iron

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

There is no applicable critia to apply to this data. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

Guideline Reference:

Compilation of Water Quality Goals

Spatial Representation:

The samples were taken at one station on the Rathbone Creek's southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were collected in the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	77509	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Mercury
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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Five (5) 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 44 samples exceeded the acute criteria 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 77509, Mercury	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26459

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the samples collected, none were used in the assessment because these were reported as non detect and the detection limit exceeded the chronic criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

USEPA National Ambient Water Quality Criteria Toxicity: mercury 1-hr avg. 1.4 ug/l.

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The samples were taken on 6/8/94 through 7/29/98

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77509, Mercury	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5892

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 21 samples taken, none exceeded the acute criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute criteria 1.4 ug/l

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The samples were taken at one station on the Rathbone Creek's southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/00.

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77509, Mercury	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5794

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 23 samples collected, none exceeded the acute recommended criteria.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute 1-hr avg. 1.4 ug/l.

Guideline Reference:

Compilation of Water Quality Goals

Spatial Representation:

The samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/00.

Environmental Conditions:

The samples were collected in the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77509, Mercury	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5800

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the samples collected, none were used in the assessment because they were reported as non detect and the detection limit exceeded the acute criteria.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

US EPA National Ambient Water Quality Criteria Toxicity: Mercury 1-hr avg. 1.4 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken beginning with 2/17/94 thorugh 4/17/2000

Environmental Conditions:

The samples were collected during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77509, Mercury	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5886

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 23 samples taken, all were reported as non detect and the detection limit was higher than the criteria so none of the samples were used for the assessment. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute criteria 1.4 ug/l

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/00

Environmental Conditions:

The samples were collected during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	75517	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Selenium
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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Four (4) 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 forty-five (45) samples exceeded the National Toxics Rule Aquatic Life 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 75517, Selenium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5807

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District for their municipal storm water program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region¿s Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

NTR Aquatic Life: Selenium 4-day avg. 5 ug/L and 1-hr avg. 20 ug/L

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The 14 samples were collected at one station on the southeast corner of Sandalwood Drive at the reinforced concrete box and Rathbone Creek; in the City of Big Bear Lake.

Temporal Representation:

The 14 samples were taken on March 19, 1994, March 10, 1995, December 12, 1995, January 31, 1996, February 19, 1996, March 4, 1996, March 13, 1996, October 30, 1996, November 21, 1996, December 9, 1996, November 26, 1997, January 9, 1998 February 3, 1998, March 25, 1998, and January 25, 2000.

Environmental Conditions:

The samples were collected during the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 75517, Selenium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5798

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected none exceeded the standard/guideline listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District for their sewage treatment plant.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The 14 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The 14 samples were taken on 3/19/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00.

Environmental Conditions:

The samples were collected during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 75517, Selenium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26462

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l, and 1-hr avg. 20 ug/l.

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 75517, Selenium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5868

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 13 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.

Guideline Reference:

Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances

Spatial Representation:

The 13 samples were taken at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 13 samples were taken on 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/19/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	77441	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Cadmium
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Six lines of evidence are available in the administrative record to assess this pollutant. Four 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 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. Four of 16 samples exceed the California Toxics Rule 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5864

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples collected, only three were used in the assessment because only three had detection limits below the acute criteria and of these none exceeded the acute criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The translators in the CTR were used to translate the criteria from dissolved to total form.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): Cadmium: 3/10/95: 9.04 ug/l, 12/12/95: 12.58 ug/l, 1/31/96: 9.87 ug/l, 2/19/96: 21.58 ug/l, 3/4/96: 20.97 ug/l, 3/13/96: 14.43 ug/l, 10/30/96: 12.13 ug/l, 11/19/96: 15.6 ug/l, 12/9/96: 11.56 ug/l, 11/26/97: 4.52 ug/l, 1/9/98: 11 ug/l, 2/3/98: 14.43 ug/l, 3/25/98: 7.14 ug/l, 1/25/00: 13.27 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were collected monthly starting with 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26473

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 7 samples collected, none were used int the assessment because these were reported as non detect and the detection limit was above the criteria. standards/guidelines. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life chronic criteria ranged from 0.5 to 0.6 ug/l

Guideline Reference:

Spatial Representation:

The 7 samples were collected at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 7 samples were taken on monthly since 1994 through 1998

Environmental Conditions:

The samples were taken during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5788

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none were used in the assessment because these were reported as non detect and the detection limit was above the chronic criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life chronic criteria ranged from 0.6 to 0.7 ug/l

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5895

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 14 samples taken, 4 were used in the assessment because the detection limits were above the acute criteria and were also reported as non detect. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria ranged from 3 ug/l to 8 ug/l

Guideline Reference:

Spatial Representation:

The 14 samples were taken at one station on the Rathbone Creek's southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting on 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were collected in the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5872

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the samples collected, two exceeded the CTR acute criteria. The dissolved to total translators from the CTR were used in converting the total concentration in the data to dissolved.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria varies with hardness as follows: 0.8 to 5 ug/l

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting on 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77441, Cadmium	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5880

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 5 samples taken, 2 exceeded the acute CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The translators in the CTR were used to convert the dissolved criteria to total criteria.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria ranged from 1.2 to 7 ug/l

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting on 2/17/94 through 4/17/2000.

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	77913	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Copper
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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. Six (6) lines of evidence are available in the administrative record to assess this pollutant. Twelve (12) 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 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. Twelve of eighty-six (86) samples exceed the California Toxics Rule 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26464

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 7 samples collected, none exceeded the standards/guidelines. The translators in the CTR were used to convert the dissolved criteria to total criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life chronic criteria ranged from 20 to 25 ug/l

Guideline Reference:

Spatial Representation:

The 7 samples were collected at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The 7 samples were taken on 6/8/94, 8/16/94, 11/1/94, 6/6/95, 7/30/96, 8/20/97, 7/29/98.

Environmental Conditions:

The samples were taken during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26452

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 4 samples collected, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota, shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

CTR chronic criteria copper ranged from 23 ug/l to 28 ug/l

Guideline Reference:

Spatial Representation:

The 4 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek: in the City of Big Bear Lake.

Temporal Representation:

The 4 samples were taken on 6/8/94, 6/6/95, 8/14/95, and 7/29/98.

Environmental Conditions:

The sample was collected as a grab during the dry weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26466

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 21 samples collected, none exceeded the acute criteria. The translators in the CTR were used to convert the the dissolved criteria to total criteria.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria ranged from 20 ug/l to 55 ug/l

Guideline Reference:

Spatial Representation:

The samples were taken at one station on the Rathbone Creek Southerly slope 200 feet west of Moonridge Road and Sand Canyon Road adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were collected monthly starting with 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were collected during the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26458

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The 22 samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek; in the City of Big Bear Lake.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule acute criteria ranged from 8 to 62 ug/l

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of Sandalwood Drive and Rathbone Creek; in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 thorugh 4/17/2000

Environmental Conditions:

The samples were collected in the wet weather by the San Bernardino County Flood Control District's Storm Water Program.

QAPP Information:

The data's quality is appropriate. Non detects that were above the criteria were not included in the assessment..

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

5874

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 22 samples taken, 6 exceeded the acute criteria. The translators in the CTR were used to convert the dissolved criteria into a total criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria ranged from 20 to 55 ug/l

Guideline Reference:

Spatial Representation:

The samples were collected at one station on the southeast corner of the Sandalwood Drive's reinforced concrete box and Rathbone Creek in the City of Big Bear Lake.

Temporal Representation:

The samples were taken monthly starting with 2/17/94 through 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather's first flush.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 77913, Copper	Region 8
Rathbone (Rathbun) Creek

LOE ID:

26453

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Of the 21 samples collected, 2 exceeded the acute criteria. The translators in the CTR were used to convert the criteria from dissolved to total. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.

Data Reference:

San Bernardino County Flood Control District data from storm water program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Santa Ana Region's Basin Plan Narrative Objective for toxicants: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan for the Santa Ana River Basin

Evaluation Guideline:

California Toxics Rule Aquatic Life acute criteria ranged from 13 to 45 ug/l

Guideline Reference:

Spatial Representation:

The 21 samples were taken at one station on the Rathbone Creek southerly slope 200 feet west of Moonridge Road and Sand Canyon Road and adjacent to the golf course in the City of Big Bear Lake.

Temporal Representation:

The samples were collected monthly starting with 2/17/94 thorough 4/17/2000

Environmental Conditions:

The samples were taken during the wet weather.

QAPP Information:

The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.

QAPP Information Reference(s):


DECISION ID	69073	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Nutrients
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2008
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 69073, Nutrients	Region 8
Rathbone (Rathbun) Creek

LOE ID:

4428

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold 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 pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):


DECISION ID	69074	Region 8
Rathbone (Rathbun) Creek

Pollutant:	Sedimentation/Siltation
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2006
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	There was no new data considered in the 2014 Listing Cycle, this previously made decision will carryover. The following description applies to an earlier Listing Cycle. 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.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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.

Line of Evidence (LOE) for Decision ID 69074, Sedimentation/Siltation	Region 8
Rathbone (Rathbun) Creek

LOE ID:

4429

Pollutant:

Sedimentation/Siltation

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold 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 pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):