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

Supporting Information

Regional Board 1 - North Coast Region

Water Body Name:	Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River
Water Body ID:	CAR1053107519990610152950
Water Body Type:	River & Stream


DECISION ID	6308	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Nutrients
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Industrial Point Sources \| Municipal Point Sources \| Natural Sources \| Nonpoint Source \| Out-of-state source \| Upstream Impoundment \| Wastewater - land disposal
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the Section 303(d) List under Section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is insufficient information available to determine with the power and confidence of the Listing Policy if standards are met due to the limited number of samples. Therefore, water segment-pollutant combination should not be removed from the Section 303(d) List (i.e., to not de-list). This conclusion is based on the staff findings that: (1) Two of 3 samples exceed the water quality objective, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are met. A minimum of 28 samples are needed for application of Table 4.1. (2) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (3) Pursuant to Section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

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

Line of Evidence (LOE) for Decision ID 6308, Nutrients	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7479

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

Per the Klamath National Forest's Watershed Condition Assessment for Thompson Creek (Boland 2001, Attachment A), there is minor, less than year-round impairment of beneficial uses within the Thompson Creek Watershed (less than 20% of the surface waters, less than 60 days in aggregate) due to physical, biological, or chemical impacts associated with nutrients. The Klamath National Forest rated the nutrient water quality of Thompson Creek with a moderate integrity/functioning rank.

Data Reference:

Attachment A: R5 Watershed Condition Assessment Data Summary. Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance, or that otherwise adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The Assessment was for the Thompson Creek Watershed.

Temporal Representation:

The time period during which the Assessment was conducted is unknown.

Environmental Conditions:

It is unknown if any environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) are related to these data.

QAPP Information:

The Assessment was conducted by professionals and local resource specialists of the U.S. Forest Service (USFS 2000). Local resource specialists include hydrologists, geologists, soil scientist, and biologists familiar with the target watershed. Other quality assurance information associated with the Assessment is unknown.

QAPP Information Reference(s):

Rating Watershed Condition: Reconnaissance Level Assessment for the National Forests of the Pacific Southwest Region. USDA Forest Service, Pacific Southwest Region. June, 2000. Region 5 Watershed Condition Assessment - Process Paper

Line of Evidence (LOE) for Decision ID 6308, Nutrients	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

3685

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6308, Nutrients	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7476

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

Per the Klamath National Forest's Watershed Condition Assessment for Clear Creek (Boland 2001, Attachment A), there is minimal to no impairment of beneficial uses in the Clear Creek watershed (less than 20% of the surface waters at any time) due to physical, biological, or chemical impacts associated with nutrients. The Klamath National Forest rated the nutrient water quality of Clear Creek with a high integrity/functioning rank.

Data Reference:

Attachment A: R5 Watershed Condition Assessment Data Summary. Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The Assessment was for the Clear Creek Watershed.

Temporal Representation:

The time period during which the Assessment was conducted is unknown.

Environmental Conditions:

It is unknown if any environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) are related to these data.

QAPP Information:

The Assessment was conducted by professionals and local resource specialists of the U.S. Forest Service. Local resource specialists include hydrologists, geologists, soil scientist, and biologists familiar with the target watershed. Other quality assurance information associated with the Assessment is unknown.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6308, Nutrients	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7478

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

Per the Klamath National Forest's Watershed Condition Assessment for Grider Creek (Boland 2001, Attachment A), there is minor, less than year-round impairment of beneficial uses within the Grider Creek Watershed (less than 20% of the surface waters, less than 60 days in aggregate) due to physical, biological, or chemical impacts associated with nutrients. The Klamath National Forest rated the nutrient water quality of Grider Creek with a moderate integrity/functioning rank.

Data Reference:

Attachment A: R5 Watershed Condition Assessment Data Summary. Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The Assessment was for the Grider Creek Watershed.

Temporal Representation:

The time period during which the Assessment was conducted is unknown.

Environmental Conditions:

It is unknown if any environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) are related to these data.

QAPP Information:

QAPP Information Reference(s):


DECISION ID	6270	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Temperature, water
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Channelization \| Dam Construction \| Drainage/Filling Of Wetlands \| Erosion/Siltation \| Flow Alteration/Regulation/Modification \| Habitat Modification \| Hydromodification \| Logging Road Construction/Maintenance \| Natural Sources \| Nonpoint Source \| Removal of Riparian Vegetation \| Silviculture \| Streambank Modification/Destabilization \| Upstream Impoundment \| Water Diversions
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Water temperature in this waterbody is being considered for removal from the Section 303(d) List under Section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Thirteen lines of evidence are available in the administrative record to assess temperature consistent with Listing Policy Section 6.1.5.9. Four lines of evidence each relate to Clear Creek, Grider Creek, and Thompson Creek. One line of evidence relates to the original list of this waterbody. Data show that the natural receiving water temperature has been altered in the Scott River to Trinity River portion of the Middle Klamath River Hydrologic Area by human activities, as follows: (A) The alteration of Clear Creek is demonstrated by exceedances of the evaluation guidelines in the amount of the watershed subject to human disturbance (see LOE 21160). Activities that remove or reduce shade-producing vegetation, or that result in a discharge of sediment to a stream, can increase stream temperatures. In order to determine if water temperatures adversely affect salmonids, the most sensitive beneficial use, temperature data was analyzed. Of the 12 maximum weekly maximum temperature (MWMT) values calculated from near-continuous summertime temperature samples, all 12 MWMT values exceed the water temperature evaluation guideline. The guideline is a MWMT of 16 C for the protection of moderate to high density summertime salmon and trout juvenile rearing, per the "U.S. EPA Regional 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards" (USEPA 2003). (B) The alteration of Grider Creek is demonstrated by exceedances of the evaluation guidelines in the amount of the watershed subject to human disturbance (see LOE 21166). Of the 10 MWMT values calculated from near-continuous summertime temperature samples, all 10 MWMT values exceed the water temperature evaluation guideline. (C) The alteration of Thompson Creek is demonstrated by exceedances of the evaluation guidelines in the amount of the watershed subject to human disturbance (see LOE 21163). Of the 7 MWMT values calculated from near-continuous summertime temperature samples, all 7 MWMT values exceed the water temperature evaluation guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the Section 303(d) list (i.e., the waterbody remains impaired). 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) The natural receiving water temperature has been altered by human activities. At a minimum, 29 of 29 MWMT values exceeded the U.S. EPA 16 C evaluation guideline used to determine an adverse affect on beneficial uses. This exceeds the temperature water quality objective more than the allowable frequency in Table 4.2 of the Listing Policy. (4) Pursuant to Section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	After review of the available data and information, North Coast RWQCB staff concludes that the water body-pollutant combination should not be removed from the Section 303(d) List because applicable water quality standards for the pollutant are being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

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

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21160

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

More than 15% of the Clear Creek Watershed is subject to disturbance by human activities. Per the Klamath National Forest (Boland 2001, Attachment F), 70% of the watershed is a congressionally designated Wilderness Area. Less than 1% of the watershed is privately owned. This leaves 29% to 30% of the watershed subject to disturbance activities.

Data Reference:

Attachment F: Supporting Narrative for Upslope, Channel and Habitat-associated Criteria (1-9) Rating Rationale. Klamath National Forest's Northern Province Category 1 Watersheds which meet "management-constrained" criteria

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Human disturbance within a watershed can impact water temperature and alter natural conditions. Activities that remove or reduce shade-producing vegetation, or that result in a discharge of sediment to a stream, can increase stream temperatures. Per NOAA Fisheries (1996), the guideline for the properly functioning condition for disturbance history is for the entire watershed to be less than 15% disturbed with no concentration of disturbance in (1) unstable areas, (2) potentially unstable areas, (3) refugia, and/or (4) riparian areas. For areas under the Northwest Forest Plan (which includes the Upper South Fork Salmon River watershed), the guideline for the properly functioning condition for disturbance history is also for there to be at least 15% retention of late succession and old growth forest in the watershed.

Guideline Reference:

Making Endangered Species Act Determinations of Effect for Individual or Group Actions at the Watershed Scale. Prepared by the National Oceanic and Atmospheric Administration National Marine Fisheries Service Environmental and Technical Services Division Habitat Conservation Branch

Spatial Representation:

The disturbance and land use information was assessed for the entire Clear Creek Watershed.

Temporal Representation:

The disturbance and land use information from the Klamath National Forest is current as of 2001.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Land use information was generated from GIS-based data sources of high quality and resolution.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21166

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

Per the Klamath National Forest (Boland 2001, Attachment F), 16% of the Grider Creek Watershed is a congressionally designated Wilderness Area. An additional 80% of the watershed is managed as late successional reserves, which limits management activities to actions that promote old-growth habitat. Less than 1% of the watershed is privately owned. This leaves, at a minimum, 3% to 4% of the watershed subject to disturbance activities. In order to determine if the 80% of the watershed in the late successional reserve has a concentration of disturbance in unstable areas, refugia, or riparian areas, North Coast Regional Water Board staff analyzed images from Google Earth of the Grider Creek Watershed (NCRWQCB 2008). Staff found that human disturbance has occurred in unstable areas (as evidenced by landslides and debris torrents) and in riparian areas (as evidenced by scoured channels).

Data Reference:

Grider Creek Disturbance Images. Compiled by North Coast Regional Water Quality Control Board staff. October 13, 2008

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The disturbance and land use information was assessed for the entire Grider Creek Watershed.

Temporal Representation:

The disturbance and land use information from the Klamath National Forest is current as of 2001. The images from Google Earth were taken from 2005 satellite images.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Klamath National Forest information was generated from GIS-based data sources of high quality and resolution.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

3683

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21163

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

More than 15% of the Thompson Creek Watershed is subject to disturbance by human activities. Per the Klamath National Forest (Boland 2001, Attachment F), 75% of the watershed is managed as late successional reserves, which limits management activities to actions that promote old-growth habitat. Less than 1% of the watershed is privately owned. This leaves, at a minimum, 24% to 25% of the watershed subject to disturbance activities.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The disturbance and land use information was assessed for the entire Grider Creek Watershed.

Temporal Representation:

The disturbance and land use information from the Klamath National Forest is current as of 2001.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Land use information was generated from GIS-based data sources of high quality and resolution.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7463

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The natural receiving water temperature of Grider Creek has been altered by human activities. This is demonstrated by exceedances of the amount of the watershed subject to human disturbance (see LOE 21166), and the estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire (see LOE 21167). Activities that remove or reduce shade-producing vegetation, or that result in a discharge of sediment to a stream, can increase stream temperatures. In order to determine if water temperatures adversely affect salmonids, the most sensitive beneficial use in Grider Creek, temperature data were analyzed. Of the 10 MWMT values calculated from near-continuous summertime temperature samples collected in Grider Creek, all 10 exceed the evaluation guideline. MWMT values range from 19.7 to 22.3 C. Data are summarized by the Klamath National Forest (KNF 2008).

Data Reference:

Stream Temperatures, Klamath River Basin. Includes data for Thompson Creek, Grider Creek, Clear Creek, Wooley Creek, North Fork Salmon River, and South Fork Salmon River

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased by more than 5 F above natural receiving water temperature. At no time or place shall the temperature of WARM intrastate waters be increased more than 5 F above natural receiving water temperature.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

If the natural receiving water temperature has been altered, or if alternation is unknown, the evaluation guideline to determine adverse affect on the most sensitive beneficial use (in this case, salmonids) is as follows. Per "U.S. EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards" (USEPA 2003), the U.S. EPA recommends a criterion for the protection of moderate to high density summertime salmon and trout juvenile rearing (i.e., core juvenile rearing) of a maximum weekly maximum temperature (MWMT) of 16 degrees C. The MWMT is also known as the maximum 7-day average of daily maximums (7DADM). The 16 degrees C MWMT criterion is recommended to (1) safely protect juvenile salmon and trout from lethal temperatures; (2) provide upper optimal conditions for juvenile growth under limited food during the period of summer maximum temperatures and optimal temperatures for other times of the growth season; (3) avoid temperatures where juvenile salmon and trout are at a competitive disadvantage with other fish; (4) protect against temperature induced elevated disease rates; and (5) provide temperatures that studies show juvenile salmon and trout prefer and are found in high densities.

Guideline Reference:

EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA.

Spatial Representation:

Temperature samples were collected from 2 locations in the mainstem Grider Creek as follows: (1) at Karuk; and (2) 50 ft upstream of the 46N66 Bridge.

Temporal Representation:

Temperature samples were collected (1) at Karuk from late March to mid-October 2006; and (2) upstream of the 46N66 Bridge from mid-June to early September 1998, from late June to early November 1999, from July 1 to mid-October 2000, from late April to mid-October 1001, from late April to early October 2002, from late May 2003 through October 2007 with 2 weeks not monitored in September 2005.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

Temperature data was collected in accordance with the quality assurance guidelines described by Schuyler (2008).

QAPP Information Reference(s):

Memorandum from John Schuyler, Klamath Nation Forest, to Rebecca Fitzgerald, North Coast Regional Water Quality Control Board, Regarding the 303(d) DeListing Request

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7462

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The natural receiving water temperature of Clear Creek has been altered by human activities. This is demonstrated by exceedances of the evaluation guidelines in the amount of the watershed subject to human disturbance (see LOE 21160), and the estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire (see LOE 21161). Activities that remove or reduce shade-producing vegetation, or that result in a discharge of sediment to a stream, can increase stream temperatures. In order to determine if water temperatures adversely affect salmonids, the most sensitive beneficial use in Clear Creek, temperature data were analyzed. Of the 12 MWMT values calculated from near-continuous summertime temperature samples collected in Clear Creek, all 12 exceed the evaluation guideline. MWMT values range from 19.8 to 23.2 C. Data are summarized by the Klamath National Forest (KNF 2008).

Data Reference:

Stream Temperatures, Klamath River Basin. Includes data for Thompson Creek, Grider Creek, Clear Creek, Wooley Creek, North Fork Salmon River, and South Fork Salmon River

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA.

Spatial Representation:

Temperature samples were collected from 2 locations in the mainstem Clear Creek as follows: (1) 100 ft upstream of the South Fork Clear Creek; and (2) near the mouth, 150 ft upstream from the private bridge.

Temporal Representation:

Temperature samples were collected (1) upstream of the South Fork Clear Creek from late May 1992 to mid-June 1994, and from early August through September 1994; (2) near the mouth from August 1 to early September 1997, from mid-June to mid-September 1998, from late June to early October 2000, from late April to mid-October 2001, from late April to early October 2002, and from late May 2003 to late October 2007.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

Temperature data was collected in accordance with the quality assurance guidelines described by Schuyler (2008).

QAPP Information Reference(s):

Memorandum from John Schuyler, Klamath Nation Forest, to Rebecca Fitzgerald, North Coast Regional Water Quality Control Board, Regarding the 303(d) DeListing Request

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21161

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

None of the 2 model results (for landslide volumes and from surface erosion volumes) in the Clear Creek Watershed exceed the evaluation guidelines. Estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire account for a 47% and 84% increase above background respectively in sediment production. Models were interpreted by staff of the Klamath National Forest. Results are summarized by Boland (2001, Attachment F).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Klamath National Forest Land and Resource Management Plan" (USFS 2001), also known as the Forest Plan: Landslide volumes of 300% over undisturbed conditions per the landslide model indicates a watersheds that is "over threshold" and is a candidate for Areas with Watershed Concern consideration. Per the "Thompson/Seiad/Grider Ecosystem Analysis" (USFS 1999): Subwatersheds with surface erosion sediment production values exceeding 800% over background are classified as "over threshold" using the Universal Soil Loss Equation.

Guideline Reference:

Klamath National Forest Land and Resource Management Plan 1995 (including all amendments as of 11/21/01). Siskiyou County, CA and Jackson County, OR. Pacific Southwest Region, United Stated Department of Agriculture Forest Service

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

Spatial Representation:

The Klamath National Forest models are specific to the Clear Creek watershed.

Temporal Representation:

Data from the Klamath National Forest models were finalized in 1998.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

The Klamath National Forest models were generated from GIS-based data sources of high quality and resolution, and are supported by stream inventories, administrative studies, continuous temperature data, and KNF professional judgment.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

7464

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The natural receiving water temperature of Thompson Creek has been altered by human activities. This is demonstrated by exceedances of the amount of the watershed subject to human disturbance (see LOE 21163), and the estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire (see LOE 21164). Activities that remove or reduce shade-producing vegetation, or that result in a discharge of sediment to a stream, can increase stream temperatures. In order to determine if water temperatures adversely affect salmonids, the most sensitive beneficial use in Thompson Creek, temperature data were analyzed. Of the 7 MWMT values calculated from near-continuous summertime temperature samples collected in Thompson Creek, all 7 exceed the evaluation guideline. MWMT values range from 17.0 to 20.3 C. Data are summarized by the Klamath National Forest (KNF 2008).

Data Reference:

Stream Temperatures, Klamath River Basin. Includes data for Thompson Creek, Grider Creek, Clear Creek, Wooley Creek, North Fork Salmon River, and South Fork Salmon River

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA.

Spatial Representation:

Temperature samples were collected from 2 locations in the mainstem Thompson Creek as follows: (1) under the 18N02 Bridge; and (2) above the 18N02 Bridge.

Temporal Representation:

Temperature samples were collected (1) under the 18N02 Bridge from late April to mid-October 2001, from late April to early October 2002, from late May to early November 2003, from late May to mid-October 2004, and from June 2005 through October 2006; and (2) above the 18N02 Bridge from mid-July to late October 2004.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

Temperature data was collected in accordance with the quality assurance guidelines described by Schuyler (2008).

QAPP Information Reference(s):

Memorandum from John Schuyler, Klamath Nation Forest, to Rebecca Fitzgerald, North Coast Regional Water Quality Control Board, Regarding the 303(d) DeListing Request

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21165

Pollutant:

Sediment | Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

Per the Klamath National Forest (Boland 2001, Attachment E), the road density in the Grider Creek Watershed is 1.31 mi / sq. mi. Of the 56.4 total miles of road in the 27,640 square mile watershed, 12.6 mi of road are located within 105 m of a stream (Boland 2001, Attachment E).

Data Reference:

Attachment E: Roads & Hydrologic Connectivity. Northern California Province Category 1 watersheds meeting "management-constrained" criteria. March 2000

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

The density of roads within a watershed can impact water temperature and alter natural conditions. Near-stream roads that run parallel to a waterbody do not allow for vegetation to grow and produce shade. Roads are also a major source of erosion and sedimentation on most managed forest lands. Excess sediment in the stream channel can result in higher water temperatures as pools fill in with sediment and channels widen in response to the increased load. Per NOAA Fisheries (1996), the guideline for the properly functioning condition for road density and location is less than 2 miles of road per square mile of watershed with no valley bottom roads.

Guideline Reference:

Spatial Representation:

Road density information were assessed for the entire Grider Creek Watershed.

Temporal Representation:

The road density data from the Klamath National Forest is current as of 2000.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

Road density data from the Klamath National Forest were developed as part of the Equivalent Roaded Area (ERA) model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004).

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21162

Pollutant:

Sediment | Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

Per the Klamath National Forest (Boland 2001, Attachment E), the road density in the Thompson Creek Watershed is 1.15 mi / sq. mi. Of the 40.9 total miles of road in the 22,729 square mile watershed, 7.4 mi of road are located within 105 m of a stream (Boland 2001, Attachment E).

Data Reference:

Attachment E: Roads & Hydrologic Connectivity. Northern California Province Category 1 watersheds meeting "management-constrained" criteria. March 2000

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Road density information were assessed for the entire Thomspon Creek Watershed.

Temporal Representation:

The road density data from the Klamath National Forest is current as of 2000.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21158

Pollutant:

Sediment | Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

Per the Klamath National Forest (Boland 2001, Attachment E), the road density in the Clear Creek Watershed is 0.45 mi / sq. mi. Of the 50.6 total miles of road in the 71,282 square mile watershed, 12.1 mi of road are located within 105 m of a stream (Boland 2001, Attachment E).

Data Reference:

Attachment E: Roads & Hydrologic Connectivity. Northern California Province Category 1 watersheds meeting "management-constrained" criteria. March 2000

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Road density information were assessed for the entire Clear Creek Watershed.

Temporal Representation:

The road density data from the Klamath National Forest is current as of 2000.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21164

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

Thompson Creek Watershed does not exceed the landslide volume evaluation guideline nor the surface erosion volume evaluation guideline. Estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire account for a 86% and 265% increase above background respectively in sediment production. Models were interpreted by staff of the Klamath National Forest. Results are summarized by Boland (2001, Attachment F).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

Spatial Representation:

The Klamath National Forest models are specific to the Thompson Creek watershed.

Temporal Representation:

Data from the Klamath National Forest models were finalized in 1998.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6270, Temperature, water	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21167

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 2 model results (for landslide volumes and from surface erosion volumes) in the Grider Creek Watershed exceed the evaluation guidelines. Estimated accelerated mass wasting and soil erosion from timber harvest, roads, and wildfire account for a 92% and 247% increase above background respectively in sediment production. Models were interpreted by staff of the Klamath National Forest. Results are summarized by Boland (2001, Attachment F).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Grider Creek Disturbance Images. Compiled by North Coast Regional Water Quality Control Board staff. October 13, 2008

Spatial Representation:

The Klamath National Forest models are specific to the Grider Creek watershed.

Temporal Representation:

Data from the Klamath National Forest models were finalized in 1998.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to the temperature data.

QAPP Information:

QAPP Information Reference(s):


DECISION ID	12312	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Aluminum
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 Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the 31 aluminum 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 31 samples exceeded the aluminum objective, 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, North Coast 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:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12312, Aluminum	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25360

Pollutant:

Aluminum

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 31 aluminum samples collected from the mainstem Klamath River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).

Data Reference:

Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): The Maximum Contaminant Level for aluminum is 1.0 mg/l (1,000 ug/L).

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were taken as grab samples in well-mixed flows in glides or riffles from 3 sampling locations in the mainstem Klamath River, as follows: (1) at Seiad Valley (SWAMP Station ID 105KLAMSI), (2) at Orleans (SWAMP Station ID 105KLAMOR), and (3) at Weitchpec above the confluence with the Trinity River (SWAMPT Station ID 105KLAMWP).

Temporal Representation:

At the Seiad Valley site, samples were collected over 16 site visits from March 2001 to June 2005. At the Orleans site, samples were collected over 5 site visits from October 2002 to June 2003. At the Weitchpec site, samples were collected over 18 visits from March 2002 to June 2003. The site visits corresponded to fall, winter, spring and early summer conditions.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (Puckett 2002).

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	15724	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Ammonia as Nitrogen
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 Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the 39 ammonia as nitrogen samples exceed the 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 39 samples exceed the water quality objective, 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, North Coast Regional Water Board staff concludes that the water body-pollutant combination should not be placed on the Section 303(d) List because applicable water quality standards are being attained.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 15724, Ammonia as Nitrogen	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

26296

Pollutant:

Ammonia as Nitrogen

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 39 ammonia as nitrogen samples collected from the Klamath River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).

Data Reference:

Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average concentration (acute criterion or CMC) of total ammonia nitrogen (in mg N/L) for freshwater where salmonid fish are present, which is not to be exceeded more than once every three years on average, is calculated using the following equation: CMC=0.275/(1+10^(7.204 - pH)) + 39.0/(1+10^(pH - 7.204)).

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (Puckett 2002).

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	10633	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Arsenic \| Cadmium \| Chromium (total) \| Copper \| Lead \| Mercury \| Nickel \| Selenium \| Silver \| 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 Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the 310 metals 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 310 samples exceeded the metal objectives, and this does not exceed the allowable frequency of 27 per the binomial distribution described in Section 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, North Coast 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:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10633, Multiple Pollutants	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

21507

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

310

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 310 metals samples collected in the mainstem Klamath River exceed the objectives. At the Seiad Valley site, there were 11 samples collected for each of the 10 metal parameters. At the Orleans site, there were 5 samples collected for each of the 10 metals. And at the Weitchpec site, there were 15 samples collected for each of the 10 metal parameters. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).

Data Reference:

Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): Arsenic objective is 0.05 mg/L. Cadmium objective is 0.01 mg/L. Chromium objective is 0.05 mg/L. Lead objective is 0.05 mg/L. Mercury objective is 0.002 mg/L. Selenium objective is 0.01 mg/L. Silver objective is 0.05 mg/L. Per 22 CCR 64431: Nickel maximum contaminant level is 0.1 mg/L. Per 22 CCR 64449: Copper secondary maximum contaminant level is 1.0 mg/L. Zinc secondary maximum contaminant level is 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	12432	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Chloride
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 Section 303(d) List under Section 3.2 of the Listing Policy. Under Section 3.2, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the 39 chloride samples exceed the evaluation guideline. 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 39 samples exceeded the chloride evaluation guideline used to interpret the water quality objective, and this does not exceed the allowable frequency listed in Table 3.2 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, North Coast 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:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12432, Chloride	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25395

Pollutant:

Chloride

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 39 chloride samples collected in the mainstem Klamath River exceed the evaluation guideline. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).

Data Reference:

Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per 22 CCR 64449: The recommended Secondary Maximum Contaminant Level for chloride is 250 mg/L.

Guideline Reference:

Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations

Spatial Representation:

Temporal Representation:

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	12503	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Sulfates
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 Section 303(d) List under Section 3.2 of the Listing Policy. Under Section 3.2, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the 39 sulfate samples exceed the evaluation guideline. 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 (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) None of the 39 samples exceed the sulfate evaluation guideline used to interpret the water quality objective, and this does not exceed the allowable frequency listed in Table 3.2 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, North Coast 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:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12503, Sulfates	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25521

Pollutant:

Sulfates

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 39 sulfate samples collected in the mainstem Klamath River exceed the evaluation guideline. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).

Data Reference:

Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007, p. 3-3.00): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per 22 CCR 64449 (Table 64449-B): The recommended secondary maximum contaminant level for sulfate is 250 mg/L.

Guideline Reference:

Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations

Spatial Representation:

Temporal Representation:

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	13971	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Cyanobacteria hepatotoxic microcystins
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Agricultural Water Diversion \| Agriculture \| Dam Construction \| Drainage/Filling Of Wetlands \| Flow Alteration/Regulation/Modification \| Habitat Modification \| Hydromodification \| Internal Nutrient Cycling (primarily lakes) \| Source Unknown
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This listing applies to the mainstem Klamath River in the Klamath River Hydrologic Unit, Middle and Lower Klamath River Hydrologic Areas, Scott River to Trinity River reach. This pollutant is being considered for placement on the Section 303(d) List under Section 3.11 of the Listing Policy. Five lines of evidence are available in the administrative record. The LOEs for microcystin toxin in the water column (LOEs 26042 and 25997) and Microcystis cells/ml in the water column (LOEs 26056 and 26007) have evaluation guidelines (WHO 2003) that meet the requirements of the Listing Policy. The LOE for microcystin toxin in tissue (LOE 25847) has an evaluation guideline (Alexeff 2008) that State Water Board staff believes does not meet the requirements of the Listing Policy, due to the fact that the guideline has not been peer-reviewed or published in an official OEHHA agency document. Therefore, only data from LOEs 26042, 25997, 26056, and 26007 for microcystin and Microcystis in the water column were utilized to assess this pollutant. Data from LOE 25847 on microcystin in tissue are as follows, but were not utilized to assess this pollutant: four out of 13 tissue microcystin toxin samples exceeded the evaluation guideline (Alexeff 2008). Based on the readily available data and information, the situation-specific 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 (i.e., sufficient justification to list). This conclusion is based on the staff findings that: (1) Combined, there are 2 of 21 water column microcystin toxin samples (LOEs 26042 and 25997), and 4 of 26 water column Microcystis cell samples (LOEs 26056 and 26007) that exceed the evaluation guidelines used to interpret the water quality objective. (2) Any exceedance of the evaluation guidelines indicate non-attainment of standards, in compliance with Section 3.11 of the Listing Policy. (3) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (4) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (5) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, North Coast RWQCB staff concludes that the water body-pollutant combination should be placed on the Section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

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

Line of Evidence (LOE) for Decision ID 13971, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

26042

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 6 microcystin samples exceed the evaluation guideline. Additionally, none of the 6 microcystin samples exceeded the Blue Green Algae Work Group (2008) guideline for microcystin toxin of 8 ug/L to protect the recreational exposure of a child. Sample concentrations range from less than the quantification limit of 1.8 ug/l to 2.0 ug/L. Samples were collected by the Yurok Tribal Environmental Program. Data are summarized in the "Final 2007 Klamath River Blue-Green Algae Summary Report" (Fetcho 2008) and in a September 16, 2008 Memorandum (Fetcho 2008).

Data Reference:

Cyanobacteria in California Recreational Water Bodies. Providing Voluntary Guidance about Harmful Algal Blooms, Their Monitoring, and Public Notification. Draft. September 2008. Blue Green Algae Work Group of the State Water Resources Control Board, Department of Public Health, and Office of Environmental Health and Hazard Assessment

Final 2007 Klamath River Blue-Green Algae Summary Report. Yurok Tribe Environmental Program

Memorandum to Klamath River Blue Green Algae Workgroup Regarding September 3, 2008 Phytoplankton Results. Yurok Tribe Environmental Program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): All water shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Water Board.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the World Health Organization (WHO 2003): The recommended guideline for microcystin toxin in recreational waters associated with a moderate probability of adverse health effects is 20 ug/L.

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Samples were collected in the mainstem Klamath River at Weitchpec upstream of the Trinity River at river mile 43.5 (Site WE).

Temporal Representation:

Grab samples were collected in the Klamath River on 11 occasions between May 30, 2007 and October 15, 2007 and on 3 occasions between August 7, 2008 and September 3, 2008.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Samples were collected and analyzed according to the procedures described in the "Lower Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan (SAP)" (Yurok 2008) and the "Final 2007 Klamath River Blue-Green Algae Summary Report" (Fetcho 2008).

QAPP Information Reference(s):

Lower Klamath River Nutrient, Periphyton, Phytoplankton, and Algal Toxin Sampling Analysis Plan (SAP). June 2008. Prepared with assistance from Kier Associates

Line of Evidence (LOE) for Decision ID 13971, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

26007

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 14 samples analyzed for Microcystis cells collected in the mainstem Klamath River exceeds the evaluation guideline. Additionally, one of the 14 samples analyzed for Microcystis cells exceeded the Blue Green Algae Work Group (2008) guideline of 40,000 Microcystis cells/ml if cell populations are dominated by Microcystis and Planktothrix to protect the recreational exposure of a child. Microcystis cell concentrations ranged from 0 to 80,016 cells/ml. Samples were collected by the Yurok Tribal Environmental Program. Data are summarized in the "Final 2007 Klamath River Blue-Green Algae Summary Report" (Fetcho 2008) and in a September 16, 2008 Memorandum (Fetcho 2008).

Data Reference:

Final 2007 Klamath River Blue-Green Algae Summary Report. Yurok Tribe Environmental Program

Memorandum to Klamath River Blue Green Algae Workgroup Regarding September 3, 2008 Phytoplankton Results. Yurok Tribe Environmental Program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the World Health Organization (WHO 2003): The recommended guideline for Microcystis cells in recreational waters associated with a moderate probability of adverse health effects is 100,000 cells/ml. This cell count evaluation guideline is a strong indicator of potential toxicity associated with the toxin microcystin.

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Samples were collected in the mainstem Klamath River at Weitchpec upstream of the Trinity River at river mile 43.5 (Site WE).

Temporal Representation:

Grab samples were collected in the Klamath River on 11 occasions between May 30, 2007 and October 15, 2007 and on 3 occasions between August 7, 2008 and September 3, 2008.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

QAPP Information Reference(s):

Lower Klamath River Nutrient, Periphyton, Phytoplankton, and Algal Toxin Sampling Analysis Plan (SAP). June 2008. Prepared with assistance from Kier Associates

Line of Evidence (LOE) for Decision ID 13971, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25997

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Two of the 15 microcystin toxin samples collected from the mainstem Klamath River exceed the objective. Additionally, two of 15 microcystin samples exceeded the Blue Green Algae Work Group (2008) guideline for microcystin toxin of 8 ug/L to protect the recreational exposure of a child. Microcystin concentrations range from non-detect to 230 ug/L. Samples were collected and summarized by the Karuk Tribe of California (Karuk 2008 - data).

Data Reference:

Karuk Tribe 2008 BGA Data (KR TOX Table 2008). Data for Blue Green Algae in the Klamath River, July 2008 to September 2008

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the World Health Organization (WHO 2003): The recommended guideline for microcystin toxin in recreational waters associated with a moderate probability of adverse health effects is 20 ug/L.

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Samples were collected in the mainstem Klamath River between the Scott River and the Trinity River at 5 locations as follows: (1) at the Rocky Point River Access, (2) at Orleans, (3) at Seiad Valley, (4) at the Seiad Valley Fish Disease Site, and (5) at the mining claim river access upstream of Seiad Valley.

Temporal Representation:

Samples were collected between July 23 and September 17, 2008.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Samples were collected according to the procedures summarized in the "Draft Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan" (Karuk 2008-MonitoringPlan).

QAPP Information Reference(s):

Draft Mid-Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan (SAP). Karuk Tribe of California Water Quality Program.

Line of Evidence (LOE) for Decision ID 13971, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

26056

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Four of the 12 Microcystis cell samples collected from the mainstem Klamath River exceed the evaluation guideline. Additionally, four of 12 samples analyzed for Microcystis cells exceeded the Blue Green Algae Work Group (2008) guideline of 40,000 Microcystis cells/ml if cell populations are dominated by Microcystis and Planktothrix to protect the recreational exposure of a child. Microcystis cell concentrations range from 1,147 to 316,828 cells/ml. Samples were collected and summarized by the Karuk Tribe of California (Karuk 2008 - data).

Data Reference:

Karuk Tribe 2008 BGA Data (KR TOX Table 2008). Data for Blue Green Algae in the Klamath River, July 2008 to September 2008

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Temporal Representation:

Samples were collected between July 23 and September 17, 2008.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Samples were collected according to the procedures summarized in the "Draft Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan" (Karuk 2008-MonitoringPlan).

QAPP Information Reference(s):

Draft Mid-Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan (SAP). Karuk Tribe of California Water Quality Program.

Line of Evidence (LOE) for Decision ID 13971, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25847

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish whole body

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Four of the 13 microcystin samples collected from mussel tissue from the mainstem Klamath River exceeds the evaluation guideline. Sample concentrations range from non-detect (with a reporting limit of 1.0 ng/g) to 506.45 ng/g. Samples were collected by the California Department of Fish and Game (CDFG) and analyzed for microcystin by the CDFG Fish and Wildlife Water Pollution Control Laboratory in Rancho Cordova, CA. Data are summarized by Kann (2008). The presence of the toxin microcystin in fish and mussels in the Klamath River has the potential to impair the Native American Culture (CUL) and Subsistence Fishing (FISH) beneficial uses, as well as the Commercial and Sport Fishing (COMM) beneficial use listed above.

Data Reference:

Technical Memorandum. Microcystin Bioaccumulation in Klamath River Fish and Freshwater Mussel Tissue: Preliminary 2007 Results. Prepared by Jacob Kann, Ph.D. of Aquatic Ecosystem Sciences LLC. Prepared for Karuk Tribe of California.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (North Coast RWQCB 2007): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Water Board.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the California Office of Environmental Health Hazard Assessment (OEHHA) (Alexeeff 2008): The upper bound of the Advisory Tissue Level range for the one serving (8 oz. uncooked fish, 6 oz. cooked, equal to 32 g/day) per week category is 26 ng total microcystins per gram of fish (26 ng/g). This Advisory Tissue Level applies to a composite of 3 or more individual samples of edible tissue.

Guideline Reference:

Letter of August 6, 2008, to Randy Landolt, Managing Director, Pacificorp Energy, from George V. Alexeeff, Ph.D, DABT, Deputy Director for Scientific Affairs, California Office of Environmental Health Hazard Assessment, regarding information related to the occurrence of microcystin in the tissues of Klamath River biota

Spatial Representation:

Mussel samples were collected from the mainstem Klamath River at 6 sites as follows: (1) from the mainstem Klamath River, (2) near Seiad, (3) at Seiad Valley, (4) at Big Bar River Access, (5) at Brown Bear west of Happy Camp, and (6) at Orleans.

Temporal Representation:

Samples were collected July 20, July 24, and November 5 to 6, 2007.

Environmental Conditions:

There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.

QAPP Information:

Samples were collected and analyzed in accordance with the quality assurance procedures described in the "Technical Memorandum. Microcystin Bioaccumulation in Klamath River Fish and Freshwater Mussel Tissue: Preliminary 2007 Results" (Kann 2008).

QAPP Information Reference(s):


DECISION ID	6309	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Organic Enrichment/Low Dissolved Oxygen
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Agriculture \| Agriculture-irrigation tailwater \| Agriculture-storm runoff \| Combined Sewer Overflow \| Flow Alteration/Regulation/Modification \| Industrial Point Sources \| Municipal Point Sources \| Out-of-state source \| Upstream Impoundment \| Wastewater - land disposal
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

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

Line of Evidence (LOE) for Decision ID 6309, Organic Enrichment/Low Dissolved Oxygen	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

3684

Pollutant:

Organic Enrichment/Low Dissolved Oxygen

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):


DECISION ID	13198	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

Pollutant:	Sediment
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Channel Erosion \| Dredge Mining \| Erosion/Siltation \| Grazing-Related Sources \| Highway/Road/Bridge Runoff \| Logging Road Construction/Maintenance \| Natural Sources \| Other \| Removal of Riparian Vegetation \| Silviculture \| Streambank Modification/Destabilization \| Unknown Nonpoint Source
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.11 of the Listing Policy. The weight of evidence indicates there is sufficient justification in favor of placing China Creek, Fort Goff Creek, Grider Creek, Portuguese Creek, Thompson Creek, and Walker Creek on the Section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: (A) The weight of evidence demonstrates that sediment conditions in China Creek, Fort Goff Creek, Grider Creek, Portuguese Creek, Thompson Creek, and Walker Creek do not attain sediment objectives and/or evaluation guidelines, in compliance with Section 3.11 of the Listing Policy, as described below: Primary evidence: (1) China Creek exceeds the embeddedness (LOE 25692) guideline. (2) Fort Goff Ck exceeds the embeddedness (LOE 25692) guideline. (3) Grider Ck exceeds the percent fines (LOE 25693) and embeddedness (LOE 25692) guidelines. (4) Portuguese Ck exceeds the embeddedness (LOE 25692) guideline. (5) Thompson Ck exceeds the percent fines (LOE 25693) and embeddedness (LOE 25692) guidelines. (6) Walker Ck exceeds the percent fines (LOE 25693) guideline. Supporting evidence: (1) Grider Ck and Walker Ck show pool reduction as a result of the flood of 1997 (LOE 25701), which exceeds the sediment objective. Evidence not incorporated in final decision: Modeling data from the USFS (LOEs 25696, 25697, and 25698) pertaining to landslide volumes, ERA/TOC ratios, and surface erosion values are not being incorporated in this decision as public comments submitted on the Integrate Report pointed out that the modeling results were out-of-date and that newer results were available. In addition, the Functionally Equivalent Document to the Listing Policy states that modeling data can not be used as primary evidence. Newer modeling results were submitted by the USFS during the public comment period and will be considered as supporting evidence in the next listing cycle. (B) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (C) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (D) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	After review of the available data and information, North Coast RWQCB staff concludes that China Creek, Fort Goff Creek, Grider Creek, Portuguese Creek, Thompson Creek, and Walker Creek should be placed on the Section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

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

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25697

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

Eleven of the 22 subwatersheds within the Thompson, Seiad, and Grider Creek watersheds of the Middle Klamath River Hydrologic Area have modeled surface erosion volumes that exceed the evaluation guideline. Surface erosion volumes range from 1% over background to 1,202% over background. The 11 subwatersheds that exceed the evaluation guideline are China Creek, Horse/Cade Creek, West Grider/Bittenbender Creek, Walker Creek, Panther Creek, Mill/Slide Creek, Caroline Creek, Upper Seiad Creek, O'Neil/Schutts Creek, Seattle/Joe Miles Creek, and Cliff Valley Creek subwatersheds. Volumes were modeled by staff of the Klamath National Forest. Results are summarized in the "Thompson/Seiad/Grider Environmental Analysis " (USFS 1999).

Data Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (North Coast RWQCB 2007): The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): A risk ratio was calculated by dividing model-estimated sediment delivery from surface erosion by model background (background=400%). A risk ratio greater than 1.0 indicates the inference point where the risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Samples were collected in 22 seventh field subwatersheds in the Middle Klamath River Hydrologic Area, as follows: Walker Creek, Caroline Creek, China Creek, Mill/Slide Creek, Canyon Creek, Horse/Cade Creek, Rancheria Creek, O'Neil/Schutts Creek, West Grider/Bittenbender Creek, Panther Creek, Lower Grider Creek, Upper Seiad Creek, Seattle/Joe Miles Creek, Fort Goff Creek, Cliff Valley Creek, Ladds/Tims Creek, Portuguese Creek, Lower Seiad Creek, Cedar/Morgan Creek, Tom Martin/Kuntz Creek, Upper Grider Creek, and Upper Thompson Creek subwatersheds.

Temporal Representation:

Model results were calculated based on pre-1999 data layers.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972, 1997/1998.

QAPP Information:

Surface erosion was predicted using the Universal Soil Loss Equation. Model components, data sources, and methodology are described in the "Thompson/Seiad/Grider Ecosystem Analysis" (USFS 1999).

QAPP Information Reference(s):

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25698

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

Ten of the 22 subwatersheds within the Thompson, Seiad, and Grider Creek watersheds of the Middle Klamath River Hydrologic Area have modeled ERA/TOC ratios that exceed the evaluation guideline. ERA/TOC ratios range from 0.14 to 1.75. The 10 subwatersheds that exceed the evaluation guideline are Upper Seiad Creek, Mill/Slide Creek, Rancheria Creek, Fort Goff Creek, China Creek, Portuguese Creek, Canyon Creek, Horse/Cade Creek, and Walker Creek subwatersheds. Ratios were modeled by staff of the Klamath National Forest. Results are summarized in the "Thompson/Seiad/Grider Environmental Analysis" (USFS 1999).

Data Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): An Equivalent Roaded Area/Threshold of Concern (ERA/TOC) percent, or risk ratio, greater than 1.0 indicates the inference point where the risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Temporal Representation:

Model results were calculated based on pre-1999 data layers.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972, 1997/1998.

QAPP Information:

Model components, data sources, and methodology are described in the "Thompson/Seiad/Grider Ecosystem Analysis" (USFS 1999).

QAPP Information Reference(s):

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25696

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

Three of the 22 subwatersheds within the Thompson, Seiad, and Grider Creek watersheds of the Middle Klamath River Hydrologic Area have modeled landslide volumes that exceed the evaluation guideline. The 3 subwatersheds are Walker Creek, Caroline Creek, and China Creek subwatersheds. Landslide volumes were modeled by staff of the Klamath National Forest. Results are summarized in the "Thompson/Seiad/Grider Environmental Analysis " (USFS 1999).

Data Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): Landslide/mass-wasting volumes of 200% over background conditions as computed by the USFS mass wasting model indicate the inference point where the risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Temporal Representation:

Model results were calculated based on pre-1999 data layers.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972, 1997/1998.

QAPP Information:

Results were calculated using the USFS GEO Mass Wasting Model. Model components, data sources, and methodology are described in the "Thompson/Seiad/Grider Ecosystem Analysis" (USFS 1999).

QAPP Information Reference(s):

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25692

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

HABITAT ASSESSMENT

Data Used to Assess Water Quality:

Five of the 7 waterbodies within the Middle Klamath River Hydrologic Area have embeddedness values that exceed the evaluation guideline. Embeddedness values range from 18% to 53% embedded. The 5 waterbodies that exceed the evaluation guideline are China Creek, Thompson Creek, Grider Creek, Portuguese Creek, and Fort Goff Creek. Samples were collected by staff of the Klamath National Forest. Results are summarized in the "Thompson/Seiad/Grider Environmental Analysis" (USFS 1999).

Data Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Klamath National Forest Land and Resource Management Plan" (USFS 2001), also known as the Forest Plan: Less than 20% embeddedness values in the channel substrate. Per the "Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices" (North Coast RWQCB 2006), embedded gravels can be cemented into the stream substrate, generally do not lift out easily, and can prevent spawning salmonids from building their redds to lay eggs. Embedded gravels also contain high levels of fine material, which reduces the permeability in the egg pocket and can slow growth and cause mortality.

Guideline Reference:

Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices. State of California North Coast Regional Water Quality Control Board

Spatial Representation:

Samples were collected in 7 waterbodies in the Middle Klamath River Hydrologic Area, as follows: China Creek, Seiad Creek, Thompson Creek, Walker Creek, Grider Creek, Portugese Creek, and Fort Goff Creek subwatersheds.

Temporal Representation:

The temporal representation is unknown.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972, 1997/1998.

QAPP Information:

Samples were collected and analyzed in accordance with the procedures found in the "Stream Condition Inventory (SCI) Technical Guide" (Frazier et al. 2005).

QAPP Information Reference(s):

Stream Condition Inventory Technical Guide. USDA Forest Service, Pacific Southwest Region - Ecosystem Conservation Staff. Vallejo, CA. 111 pp

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25693

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

HABITAT ASSESSMENT

Data Used to Assess Water Quality:

Three of the 8 waterbodies within the Middle Klamath River Hydrologic Area have percent fine compositions that exceed the evaluation guideline. Compositions range from 5% to 17% fines. The 3 waterbodies that exceed the evaluation guideline are Thompson Creek, Walker Creek, and Grider Creek. Samples were collected by staff of the Klamath National Forest. Results are summarized in the "Thompson/Seiad/Grider Environmental Analysis" (USFS 1999).

Data Reference:

Thompson/Seiad/Grider Ecosystem Analysis. United States Department of Agriculture, Forest Service, Pacific Southwest Region, Klamath National Forest, Happy Camp Ranger District

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Klamath National Forest Land and Resource Management Plan" (USFS 2001), also known as the Forest Plan: Less than 15% fines of the substrate composition as the area weighted average in spawning habitat. Per the "Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices" (North Coast RWQCB 2006), fine sediment particles in the substrate of a waterbody have the potential to fill the interstitial spaces of gravels used by salmonids to hold and incubate eggs, suffocating the eggs. Fines from 1.0 mm to 10.0 mm in diameter are also capable of blocking fry emergence. High amounts of fines can result in reduced embryo and fry survival and have deleterious effects on the cold water fishery beneficial uses.

Guideline Reference:

Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices. State of California North Coast Regional Water Quality Control Board

Spatial Representation:

Samples were collected in 8 waterbodies in the Middle Klamath River Hydrologic Area, as follows: China Creek, Seiad Creek, Thompson Creek, Walker Creek, Grider Creek, Horse Creek, Portugese Creek, and Fort Goff Creek.

Temporal Representation:

The temporal representation is unknown.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972, 1997/1998.

QAPP Information:

Samples were collected and analyzed in accordance with the procedures found in the "Stream Condition Inventory (SCI) Technical Guide" (Frazier et al. 2005).

QAPP Information Reference(s):

Stream Condition Inventory Technical Guide. USDA Forest Service, Pacific Southwest Region - Ecosystem Conservation Staff. Vallejo, CA. 111 pp

Line of Evidence (LOE) for Decision ID 13198, Sediment	Region 1
Klamath River HU, Middle HA and Lower HA, Scott River to Trinity River

LOE ID:

25701

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

"The Flood of 1997 Klamath National Forest" report (de la Fuente and Elder 1998) states that "[b]ased on observations of fisheries personnel, there appeared to be considerable reduction in size, volume and depth of pools in Elk, Indian, Beaver, Grider, Tompkins, South Fork Salmon, and Walker Creeks, and there is a larger proportion of fine sediment in the substrate. Alluvial reaches were made shallower and wider due to sedimentation." All the waterbodies listed except for Beaver Creek, Tompkins Creek, and the South Fork Salmon River fall within the Scott River to Trinity River portion of the Middle and Lower Klamath River Hydrologic Areas.

Data Reference:

The flood of 1997-Klamath National Forest. Phase 1 Final Report. Yreka, CA: Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The assessment applies to the Beaver Creek Watershed.

Temporal Representation:

The assessment was made after the flood over December 26, 1996 to January 3, 1997. Findings were made available in November 1998.

Environmental Conditions:

Conditions were a result of the storm of December 26, 1996 to January 3, 1997.

QAPP Information:

The assessment was made by professional staff of the Klamath National Forest.

QAPP Information Reference(s):