Water Body Name: | Holcomb Creek |
Water Body ID: | CAR6282000020000215160943 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 8999 |
LOE ID: | 8264 |
Pollutant: | Acid Neutralizing Capacity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program. Two samples collected in March and June 2003 were analyzed for ANC. The results were ANC values of 7.9 and 7.6 mg/L CaCO3. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | There are no California or federal standards or criteria for acid neutralizing capacity (ANC) per se. However, ANC is equivalent to alkalinity, and the U.S. Environmental Protection Agency "Gold Book" recommends alkalinity greater than 20 mg/L CaCO3 unless natural alkalinity is lower. |
Objective/Criterion Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Two samples were collected in March and June 2003. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8995 |
LOE ID: | 5344 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 4 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program. Of 9 boron samples, 3 were estimated values. Boron concentrations in the remaining 6 samples ranged from 8.5 to 41 ug/L. The annual average objective was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for Deep Creek Station 5, from Lahontan Basin Plan Table 3-21, applies. It includes an annual average of 0.05 mg/L (or 50 ug/L), and a 90th percentile value of 0.07 mg/L (or 70 ug/L). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Nine samples were collected. One sample was collected in 2001, no samples were collected in 2002, and 2 to 3 samples per year were collected quarterly between 2003 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 8079 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program. Of 9 boron samples, 3 were estimated values. Boron concentrations in the remaining 6 samples ranged from 8.5 to 41 ug/L. The criterion was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The California State Notification Level criterion for boron is 1000 ug/L. |
Objective/Criterion Reference: | Drinking Water Notification and Response Levels: An overview |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Nine samples were collected. One sample was collected in 2001, no samples were collected in 2002, and 2 to 3 samples per year were collected quarterly between 2003 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7804 |
LOE ID: | 5351 |
Pollutant: | Chloride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected chloride samples under the Region 6 SWAMP program between 2001 and 2005. Chloride concentrations in 13 samples ranged from 1.12 to 5.21 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for chloride is 250 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5233 |
Pollutant: | Chloride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly chloride samples under the Region 6 SWAMP program between 2001 and 2005. Chloride concentrations in 13 samples ranged from 1.12 to 5.21 mg/L. The annual average objective was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for chloride (for Station 5 in Lahontan Basin Plan Table 3-21) includes an annual average of 9.1 mg/L and a 90th percentile value of 16.0 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7722 |
LOE ID: | 5818 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 3 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey took three quarterly measurements of dissolved oxygen saturation in Holcomb Creek under the Region 6 SWAMP program between November 2004 and July 2005. Percent saturation ranged from 100 to 106 percent. The objective was not violated. However, sampling frequency was insufficient to define background levels or detect change. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's water quality objective states that percent saturation shall not be depressed by more than 10 percent and minimum dissolved oxygen concentration shall not be less than 80 percent saturation. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Three quarterly measurements of percent saturation were taken between November 2004 and July 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8996 |
LOE ID: | 5352 |
Pollutant: | Fluoride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 4 |
Number of Exceedances: | 1 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program between 2001 and 2005. Of 10 fluoride samples, two were estimated values and one was below the detection level. The remaining samples ranged from 0.6 to 5.3 mg/L. No data were collected in 2002, and two of four annual averages were estimated values. The average for 2001 (based on a single sample) exceeded the objective. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The applicable site specific objectives from Lahontan Basin Plan Table 3-21 include an annual average of 0.1 mg/L fluoride and a 90th percentile value of 0.19 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Two samples were collected in 2001 and none in 2002. Three samples were collected in 2003 and three in 2004. Two samples were collected in 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5353 |
Pollutant: | Fluoride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 10 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program between 2001 and 2005. Of 10 fluoride samples, two were estimated values and one was below the detection level. The remaining samples ranged from 0.6 to 5.3 mg/L. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for fluoride is 2 mg/L (2000 ug/L). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Two samples were collected in 2001 and none in 2002. Three samples were collected in 2003 and three in 2004. Two samples were collected in 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9000 |
LOE ID: | 8266 |
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly samples under the Region 6 SWAMP program between 2001 and 2005. Of 13 samples, 5 were below the detection level, two were estimated values, and 6 had nitrite plus nitrite concentrations ranging from 0.001 to 0.003 mg/L. The MCL was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for nitrite plus nitrate is 10 mg/L, expressed "as nitrogen." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9001 |
LOE ID: | 8265 |
Pollutant: | Nitrite |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly samples under the Region 6 SWAMP program between 2001 and 2005. Of 13 samples, 6 were below the detection level, one was an estimate, and 6 had nitrite concentrations of 0.001 mg/L. The MCL was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for nitrite is 1 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7723 |
LOE ID: | 5817 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek quarterly under the Region 6 SWAMP program between July 2001 and July 2005. Twelve dissolved oxygen measurements ranged from 5.1 to 11.1 mg/L. The 1-day minimum objective was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The water quality objective from Lahontan Basin Plan Table 3-6 for waters designated for the COLD beneficial use but not the SPWN use is a 1-day minimum dissolved oxygen concentration of 4 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Twelve samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9007 |
LOE ID: | 8270 |
Pollutant: | Phosphate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 4 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly chloride samples under the Region 6 SWAMP program between 2002 and 2005. Of eleven samples for phosphate "as P," two were estimated values and three were below the detection level. Concentrations in the remaining samples ranged from 0.002 to 0.008 mg/L. Eleven calculations were done for orthophosphate "as phosphate." These samples included two estimated and three below detection level values; the remaining samples ranged from 0.006 to 0.025 mg/L. The annual average objective was not exceeded.
Two additional samples for dissolved hydrolyzable P plus PO4 (as P) include one below detection level value and one concentration of 0.02 mg/L. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for dissolved orthophosphate (for Station 5 in Lahontan Basin Plan Table 3-21) includes an annual average of 0.05 mg/L and a 90th percentile value of 0.13 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen samples (2 to 3 samples per year) were collected and analyzed for phosphate between 2001 and 2005. Two addtional samples collected in October 2001 and February 2002 were analyzed for dissolved hydrolyzable P plus PO4 |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9005 |
LOE ID: | 8269 |
Pollutant: | Phosphorus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program between 2002 and 2005. Of 9 samples, one was an estimated value and two were below the detection level. Concentrations in the remaining samples ranged from 0.011 to 0.017 mg/L. No biological data are available for assessment of compliance with the objective for biostimulatory substances. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The Lahontan Basin Plan does not include a site-specific objective for total phosphorus in Holcomb Creek. The Basin Plan's narrative objective for biostimulatory substances states: "Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect the water for beneficial uses." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Nine quarterly samples (1 to 3 samples per year) were collected between 2002 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7607 |
LOE ID: | 5360 |
Pollutant: | Specific Conductance |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey measured specific conductance under the Region 6 SWAMP program between 2001 and 2005. Twelve laboratory measurements of specific conductance ranged from 61 to 305 uS/cm. Five field measurements ranged from 94 to 309 uS/cm. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for specific conductance is 900 microsiemens per centimeter (uS/cm). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Twleve laboratory measurements of specific conductance were taken on quarterly samples collected between 2001 and 2005. Five additional field measurements were taken between 2001 and 2003. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7805 |
LOE ID: | 5362 |
Pollutant: | Sulfates |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly sulfate samples under the Region 6 SWAMP program between 2001 and 2005. Sulfate concentrations in 13 samples ranged from an estimated 0.1 mg/L to 3.7 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for sulfate is 250 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5363 |
Pollutant: | Sulfates |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 4 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly sulfate samples under the Region 6 SWAMP program between 2001 and 2005. Sulfate concentrations in 13 samples ranged from an estimated 0.1 mg/L to 3.7 mg/L. The annual average objective was violated in 4 of 5 years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The applicable site-specific objective is that for Deep Creek Station 5, from Lahontan Basin Plan Table 3-21. The objective includes an annual average of 1.3 mg/L and a 90th percentile value of 4.9 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7702 |
LOE ID: | 5367 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey measured water temperature under the Region 6 SWAMP program between 2001 and 2005. Temperatures in 13 measurements ranged from 2 to 18.5 degrees Celsius. There are insufficient data available to document the natural temperature regime or to determine whether change has occurred |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The relevant language from the Lahontan Basin Plan's temperature objective is: "The natural receiving water temperature of al l waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such an alteration in temperature does not adversely affect the water for beneficial uses.
For waters designated WARM, water temperature shall not be altered by more than five degrees Fahrenheit ... above or below the natural temperature. For waters designated COLD, the temperature shall not be altered." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly measurements of water temperature (1 to 3 per year) were taken between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8998 |
LOE ID: | 5365 |
Pollutant: | Total Dissolved Solids |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 5 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly TDS samples under the Region 6 SWAMP program between 2001 and 2005. Total dissolved solids concentrations in 13 samples ranged from 70 to 190 mg/L. The annual average objective was exceeded in 5 out of 5 years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The applicable site-specific objective is that for Deep Creek Station 5, from Lahontan Basin Plan Table 3-21. It includes an annual average TDS of 83 mg/L and a 90th percentile value of 123 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5364 |
Pollutant: | Total Dissolved Solids |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey collected quarterly TDS samples under the Region 6 SWAMP program between 2001 and 2005. Total dissolved solids concentrations in 13 samples ranged from 70 to 190 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for total dissolved solids (TDS) is 500 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9002 |
LOE ID: | 8267 |
Pollutant: | Total Kjeldahl Nitrogen (TKN) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program between 2001 and 2005. Of 13 samples for TKN, three were estimated values and one was below the detection level. Concentrations in the remaining samples ranged from 0.08 to 0.25 mg/L. No biological data are available for assessment of compliance with the objective for biostimulatory substances. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The Lahontan Basin Plan does not include a site-specific objective for Total Kjeldahl Nitrogen (TKN) in Holcomb Creek. The Basin Plan's narrative objective for biostimulatory substances states: "Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect the water for beneficial uses." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples (1 to 3 samples per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 9004 |
LOE ID: | 8268 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Holcomb Creek under the Region 6 SWAMP program between 2001 and 2005. Total nitrogen was calculated from total Kjeldahl nitrogen and nitrate plus nitrite. Six of 13 calculated total nitrogen concentrations were estimated values, due to estimated values or below detection level values in the components. Concentrations in the remaining sample ranged from 0.081 to 0.251 mg/L. The annual average objective was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for total nitrogen (for Station 5 in Lahontan Basin Plan Table 3-21) includes an annual average of 0.3 mg/L and a 90th percentile value of 0.7 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly samples each (1 to 3 samples per year) were collected for total Kjeldahl nitrogen and nitrate plus nitrite between 2001 and 2005. Thirteen calculations of total nitrogen concentrations were done. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8997 |
LOE ID: | 5359 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 13 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey measured pH under the Region 6 SWAMP program between 2001 and 2005. In 13 measurements, pH values ranged from 7.4 to 8.3 units. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's pH objective states: "In fresh waters with designated beneficial uses of COLD or WARM, changes in normal ambient pH levels shall not exceed 0.5 pH units. For all other waters of the region, the pH shall not be depressed below 6.5 nor raised above 8.5 units.
The Regional Board recognizes that some waters of the Region may have natural pH levels outside of the 6.5 to 8.5 range. Compliance with the pH objective for these waters will be determined on a case-by-case basis." |
Objective/Criterion Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Holcomb Creek at Crab Flats Road, was sampled. |
Temporal Representation: | Thirteen quarterly pH measurements (1 to 3 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Holcomb Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Its headwaters are located north of Big Bear Lake. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |