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

Supporting Information

Regional Board 8 - Santa Ana Region

Water Body Name: Cucamonga Creek Reach 1 (Valley Reach)
Water Body ID: CAR8012100019990211101136
Water Body Type: River & Stream
 
DECISION ID
12883
 
Pollutant: Alachlor | Atrazine | Azinphos-methyl (Guthion) | Carbaryl | Carbofuran | Chlorpyrifos | DDE | Dieldrin | Disulfoton | Malathion | Methyl Parathion | Molinate | Thiobencarb/Bolero
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One (1) line of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of three (3) samples exceeded the US EPA National Recommended Ambient Water Quality Criteria Aquatic Life Protection Instantaneous Maximum 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that though this water body is impaired for sediment toxicity, these water body-pollutant combinations should not be placed on the section 303(d) list because applicable water quality standards for these pollutants are not being exceeded
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12883
 
LOE ID: 7813
 
Pollutant: Alachlor | Atrazine | Azinphos-methyl (Guthion) | Carbaryl | Carbofuran | Chlorpyrifos | DDE | Dieldrin | Disulfoton | Malathion | Methyl Parathion | Molinate | Thiobencarb/Bolero
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Of the three samples collected none exceeded the guidelines.
Data Reference: Concentrations of Pesticides in the waterbodies in the Santa Ana Region
 
Water Quality Objective/Criterion: Santa Ana Region’s Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: USEPA National Recommended Ambient Water Quality Criteria Aquatic Life Protection Instantaneous Max - alachlor: 76 ppb, atrazine: 1 ppb, azinphos methyl: 0.01 ppb, carbaryl: 0.02 ppb, carbofuran: 0.5 ppb, disulfoton: 0.05 ppb, malathion: 0.01 ppb.
California Department of Fish and Game: chlropyrifos: 0.014 ppb, parathion: 0.08 ppb, molinate: 13 ppb, permethrin: 0.03 ppb, thiobencarb: 3.1 ppb. USEPA National Recommended Ambient Water Quality Criteria Aquatic Life Protection Cont Conc 4 day ave: DDE: 0.001 ppb. CTR Freshwater aquatic life protection Cont Conc 4 day ave - dieldrin: 0.056 ppb
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
  National recommended water quality criteria: 2002. EPA-822-R-02-047 Washington, D.C. USEPA
  Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were collected at the following locations: Cucamonga Creek Near Upland California_USGS NAWQA site; Cucamonga Creek Main Channel at Chino ave Near Ontario California_USGS NAWQA site; Cucamonga Creek Near Mira Loma California_USGS NAWQA site.
Temporal Representation: The samples were collected on 8/8/00, 8/9/00, 8/16/00.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it came from the Department of Pesticide Regulation.
QAPP Information Reference(s):
 
DECISION ID
12957
 
Pollutant: Aluminum | Arsenic | Chromium, hexavalent | Lead | Mercury | Nickel | Selenium | pH
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Twenty-three lines of evidence are available in the administrative record to assess this pollutant. [NUMBER] of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of two hundred sixty-four (264) samples exceeded the California Toxics Rule Criteria, the Basin Plan Objective, and USEPA National Recommended Ambient Water Quality Criteria for Aquatic life protection 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12957
 
LOE ID: 5932
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5933
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 19
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 19 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (the following criteria varies according to hardness): Lead 2/17/94: 48.11 ug/l, 3/19/94: 46.26 ug/l, 11/10/94: 75.46 ug/l, 1/23/95: 519.71 ug/l, 3/10/95: 37.26 ug/l, 12/12/95: 283.66 ug/l 1/31/96: 125.3 ug/l, 2/19/96: 102.97 ug/l, 3/4/96: 148.52 ug/l, 3/13/96: 92.18 ug/l, 11/21/96: 56.61 ug/l, 12/9/96: 49.97 ug/l, 11/26/97: 39.92 ug/l, 1/9/98: 58.54 ug/l, 2/3/98: 36.39 ug/l, 3/25/98: 136.80 ug/l, 12/25/03: 59.51 ug/l, 2/3/04: 172.54 ug/l, 2/19/04: 80.61 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 8301
 
Pollutant: Aluminum | Chromium, hexavalent | Mercury | Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: There was only one sample collected and it did not exceed the guidelines.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region’s Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: USEPA National Recommended Ambient Water Quality Criteria for Aquatic life protection
CTR Fresh Water Aquatic Life Protection 4 day Average continuous concentration
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The sample was collected in Cucamonga Creek near Mira Loma
Temporal Representation: The sample was collected on August 16, 2005.
Environmental Conditions:
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 8374
 
Pollutant: Lead | Nickel
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: None of the samples taken exceeded the standard. This data came from the database compiled by Wildermouth Environmental Consulting Services on behalf of the sewage treatment dischargers in the upper Santa An River watershed.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Basin Plan objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: The California Toxics Rule criteria is hardness dependent and ranged as follows: lead - 3.97 ppb; nickel - 60.43 ppb.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The sample was taken in Cucamonga Creek near Mira Loma
Temporal Representation: The sample was taken on 8/16/2005
Environmental Conditions: The sample was taken during the dry season conditions.
QAPP Information: The data's quality is deemed acceptable because it was submitted by an NPDES discharger in accordance with its Monitoring and Reporting Requirements.
QAPP Information Reference(s):

 
LOE ID: 25661
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 15
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 15 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 3/19/94: 35.51 ug/l, 11/10/94: 275.54 ug/l, 3/10/95: 6.68 ug/l, 12/12/95: 860 ug/l, 1/31/96: 35.51 ug/l, 2/19/96: 148.52 ug/l, 3/4/96: 28.71 ug/l, 3/13/96: 26.24 ug/l, 10/30/96: 682.23 ug/l, 11/21/96: 72.41 ug/l, 12/9/96: 48.11 ug/l, 11/26/97: 51.85 ug/l, 1/9/98: 12.57 ug/l, 2/3/98: 14.70 ug/l, 3/25/98: 19.91 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 15 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were collected on: 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5930
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 3 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: Compilation of Water Quality Goals
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective: 6.5-8.5 units
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on 12/25/03, 2/2/04, 2/18/04
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5904
 
Pollutant: Arsenic | Lead | Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l. The following criteria varies according to hardness: lead: 6/8/94: 336.22 ug/l, 8/16/94: 206.14 ug/l, 6/6/95: 272.85 ug/l, 8/14/95: 289.11 ug/l, 7/30/96: 222.76 ug/l, 8/20/97: 222.76 ug/l, 7/29/98: 289.11 ug/l; zinc: 6/8/94: 307.37 ug/l, 8/16/94: 221.94 ug/l, 6/6/95: 267.47 ug/l, 8/14/95: 277.98 ug/l, 7/30/96: 233.7 ug/l, 8/20/97: 233.7 ug/l, 7/29/98: 277.98 ug/l.
National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5905
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 3 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective: The pH of inland surface waters shall not be raised above 8.5 or depressed below 6.5
as a result of controllable water quality factors.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The 3 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were collected on 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5909
 
Pollutant: Arsenic | Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 16
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 16 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l.
National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The 16 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 5910
 
Pollutant: Arsenic | Lead | Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 16
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 16 samples taken, 0 exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l. The following criteria varies according to hardness: Lead 2/17/94: 16.89 ug/l, 3/19/94: 13.27 ug/l, 11/10/94: 49.04 ug/l, 3/10/95: 11.20 ug/l, 12/12/95: 270.16 ug/l, 1/31/96: 18.38 ug/l, 2/19/96: 69.38 ug/l, 3/4/96: 36.39 ug/l, 3/13/96: 59.51 ug/l, 10/30/96: 172.54 ug/l, 11/21/96: 30.38 ug/l, 12/9/96: 34.65 ug/l, 11/26/97: 23.82 ug/l, 1/9/98: 17.63 ug/l, 2/3/98: 13.98 ug/l, 3/25/98: 19.91 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The 16 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5911
 
Pollutant: Arsenic | Lead | Selenium | pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective: The pH of inland surface waters shall not be raised above 8.5 units or depressed below 6.5 units as a result of controllable water quality factors.
For the metals, the following objective applies:
Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l.
California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): Lead: 6/8/94: 177.44 ug/l, 8/16/94:159.23 ug/l, 11/1/94: 142.63 ug/l, 6/6/95: 159.23 ug/l, 8/14/95: 134.48 ug/l, 7/30/96: 136.80 ug/l, 8/20/97: 136.80 ug/l, 7/29/98: 125.30 ug/l.

National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5913
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 23
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 23 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98. 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5914
 
Pollutant: Lead | Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 18
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 18 samples taken, 0 exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: Compilation of Water Quality Goals
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 3/19/94: 25.43 ug/l, 11/10/94: 247.53 ug/l, 1/23/95: 29.54 ug/l, 3/10/95: 20.68 ug/l, 1/31/96: 32.93 ug/l, 2/19/96: 197.31 ug/l, 3/4/96: 52.79 ug/l, 3/13/96: 49.04 ug/l, 10/30/96: 248.85 ug/l, 11/21/96: 102.97 ug/l, 12/9/96: 36.39 ug/l, 11/26/97: 40.81 ug/l, 1/9/98: 14.7 ug/l, 2/3/98: 15.42 ug/l, 3/25/98: 125.3 ug/l, 12/24/03: 114 ug/l, 2/2/04: 41.21 ug/l, 2/18/04: 35.51 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5915
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 3 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective: The pH of inland surface waters shall not be raised above 8.5 or depressed below 6.5 as a result of controllable water quality factors.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5916
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 18
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 18 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 3/19/94:124.16 ug/l, 11/10/94: 148.52 ug/l, 1/23/95: 348.95 ug/l, 3/10/95: 46.26 ug/l, 12/12/95: 882.92 ug/l, 1/31/96: 92.18 ug/l, 2/19/96: 160.43 ug/l, 3/4/96: 184.83 ug/l, 3/13/96: 92.18 ug/l, 11/21/96: 136.8 ug/l, 12/9/96: 58.54 ug/l, 11/26/97: 68.38 ug/l, 1/9/98: 60.48 ug/l, 2/3/98: 50.91 ug/l, 3/25/98: 114.02 ug/l, 12/25/03: 102.97 ug/l, 2/2/04: 92.18 ug/l, 2/18/04: 289.11 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5917
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 19
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 19 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 2/17/94: 14.7 ug/l, 3/19/94: 25.43 ug/l, 11/10/94: 88.88 ug/l, 1/23/95: 11.88 ug/l, 3/10/95: 17.63 ug/l, 1/31/96: 18.38 ug/l, 2/19/96: 114.02 ug/l, 3/4/96: 30.38 ug/l, 3/13/96: 11.20 ug/l, 10/30/96: 387.71 ug/l, 11/21/96: 39.92 ug/l, 12/9/96: 31.23 ug/l, 11/26/97: 33.78 ug/l, 1/9/98: 22.24 ug/l, 2/3/98: 19.14 ug/l, 3/25/98: 70.39 ug/l, 12/24/03: 92.17 ug/l, 2/2/04: 63.42 ug/l, 2/18/04: 27.06 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5924
 
Pollutant: Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 18
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 18 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on 2/17/94, 3/19/94, 11/10/94, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5925
 
Pollutant: Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 18
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 18 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on 2/17/94, 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5926
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5927
 
Pollutant: Arsenic | Lead | Selenium | pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective: pH 6.5 - 8.5 units.
Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l. The following criteria varies according to hardness: Lead: 2/17/94: 14.70 ug/l, 3/19/94: 25.43 ug/l, 11/10/94: 88.88 ug/l, 1/23/95: 11.88 ug/l, 3/10/95: 17.63 ug/l, 1/31/96: 18.38 ug/l, 2/19/96: 114.02 ug/l, 3/4/96: 30.38 ug/l, 3/13/96: 11.20 ug/l, 10/30/96: 387.71 ug/l, 11/21/96: 39.92 ug/l, 12/9/96: 31.23 ug/l, 11/26/97: 33.78 ug/l, 1/9/98: 22.24 ug/l, 2/3/98: 19.14 ug/l, 3/25/98: 70.39, 12/24/03: 92.17 ug/l, 2/2/04: 63.42 ug/l, 2/18/04: 27.06 ug/l.
National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96,11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5931
 
Pollutant: Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 17
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 17 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5929
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: Arsenic 4-day avg. 150 ug/l, and 1-hr avg. 340 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5928
 
Pollutant: Arsenic | Lead | Selenium | pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Numeric Objective pH: 6.5 - 8.5 units.
Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: Arsenic 4-day avg. 150 ug/l and 1-hr avg. 340 ug/l;
The CTR criteria varies according to hardness as follows: Lead: 6/8/94: 129.87 ug/l, 8/16/94: 216.33 ug/l, 11/1/94: 123.03 ug/l, 6/6/95: 194.80 ug/l, 8/14/95: 279 ug/l, 7/30/96: 114.02 ug/l, 8/20/97: 235.73 ug/l, 7/29/98: 262.12 ug/l;

Zinc: 6/8/94: 163.19 ug/l, 8/16/94: 229.19 ug/l, 11/1/94: 157.41 ug/l, 6/6/95: 213.74 ug/l, 8/14/95: 271.86 ug/l, 7/30/96: 149.64 ug/l, 8/20/97: 242.67 ug/l, 7/29/98: 260.43 ug/l.
National Toxics Rule Aquatic Life: Selenium 4-day avg. 5 ug/l and 1-hr avg. 20 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
  Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):
 
DECISION ID
12976
 
Pollutant: Cadmium
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Ten (10) lines of evidence are available in the administrative record to assess this pollutant. Three of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of the 10 samples collected during the dry weather exceeded the chronic CTR criteria and three (3) of ninety-two (92) samples collected during the wet weather exceeded the CTR acute criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12976
 
LOE ID: 25684
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: None of the samples taken exceeded the standard. This data came from the database compiled by Wildermouth Environmental Consulting Services on behalf of the sewage treatment dischargers in the upper Santa An River watershed.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Basin Plan objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: The California Toxics Rule cadmium criteria is hardness dependent and ranged as follows: cadmium - 2.82 ppb
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The sample was taken in Cucamonga Creek near Mira Loma
Temporal Representation: The sample was taken on 8/16/2005
Environmental Conditions: The sample was taken during the dry season conditions.
QAPP Information: The data's quality is deemed acceptable because it was submitted by an NPDES discharger in accordance with its Monitoring and Reporting Requirements.
QAPP Information Reference(s):

 
LOE ID: 25674
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 4
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Eight samples were collected and analyzed for Cadmium. But of the 8 samples, 4 were reported as non detect and the detection limit was above the criteria. So only the remaining 4 samples that had a detection limit below the criteria were used for the assessment. Of the 4 samples taken, none exceeded the CTR criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule chronic criteria. This criteria changes based on the hardness. as follows: cadmium - 6/8/94: 6.82 ug/l, 8/16/94: 10.71 ug/l, 11/1/94: 6.50 ug/l, 6/6/95: 9.76 ug/l, 8/14/95: 13.45 ug/l, 7/30/96: 6.07 ug/l, 8/20/97: 11.56 ug/l, 7/29/98: 12.70 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25662
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 6 samples taken, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: The following criteria varies according to hardness: cadmium: 6/8/94: 15.83 ug/l, 8/16/94: 10.26 ug/l, 6/6/95: 13.16 ug/l, 8/14/95: 13.85 ug/l, 7/30/96: 10.99 ug/l, 8/20/97: 10.99 ug/l, 7/29/98: 13.85 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 8/16/1994
6/6/1995, 8/14/1995, 7/30/1996, 8/20/1997, 7/29/1998
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6016
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 30
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 30 samples taken, none exceeded the CTR criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria (this criteria varies according to hardness as follows): 3/19/94: 6.55 ug/l, 11/10/94: 7.68 ug/l, 3/10/95: 2.73 ug/l, 12/12/95: 37.25 ug/l, 1/31/96: 5.03 ug/l, 2/19/96: 8.22 ug/l, 3/4/96: 9.32 ug/l, 3/13/96: 5.03 ug/l, 11/21/96: 7.14 ug/l, 12/9/96: 3.36 ug/l, 11/26/97: 3.86 ug/l, 1/9/98: 3.46 ug/l, 2/3/98: 2.97 ug/l, 3/25/98: 6.07 ug/l, 1/25/00: 32.17 ug/l, 1/8/01: 7.14 ug/l, 1/24/01: 6.07 ug/l, 2/23/01: 4.52 ug/l, 4/7/01; 7.68 ug/l, 12/25/03: 5.55 ug/l, 2/2/04: 5.03 ug/l, 2/18/04: 13.85 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were collected on: 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6003
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 22
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Thirty-seven samples were collected and analyzed for cadmium but of these only 22 were used for the assessment because the remaining samples were reported as non detect and the detection limit was below the CTR criteria. Of the 22 samples taken, none exceeded the CTR standard listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the need to list this waterbody.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria varies according to hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly since 1994 through 2004.
Environmental Conditions: The samples were collected in the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5998
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 11
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: 38 samples were collected and analyzed for cadmium. However, of all the 38 samples, only 11 were used in the assessment because the rest of the samples were reported as non detect and the detection limit was higher than the CTR criteria. Of the 11 samples taken, one exceeded the CTR standard listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): cadmium 2/17/94: 0.99 ug/l, 3/19/94: 1.61 ug/l, 11/10/94: 4.77 ug/l, 1/23/95: 0.82 ug/l, 3/10/95: 1.16 ug/l, 1/31/96: 1.21 ug/l, 2/19/96: 6.07 ug/l, 3/4/96: 1.88 ug/l, 3/13/96: 0.78 ug/l, 10/30/96: 17.96 ug/l, 11/21/96: 2.40 ug/l, 12/9/96: 1.93 ug/l, 11/26/97: 2.07 ug/l, 1/9/98: 1.43 ug/l, 2/3/98: 1.25 ug/l, 3/25/98: 3.96 ug/l, 1/25/00: 7.14 ug/l, 1/8/01: 4.52 ug/l, 1/24/01: 1.84 ug/l, 2/23/01: 0.82 ug/l, 4/7/01: 1.07 ug/l, 12/24/03: 5.03 ug/l, 2/2/04: 3.61 ug/l, 2/18/04: 1.70 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5979
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Twenty-four samples were collected and analyzed for cadmium but all except for two were reported as non detect and the detection limit was higher than the criteria so only 2 samples were used in the assessment. Of the 2 samples taken, none exceeded the CTR criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): cadmium: 2/17/94: 1.12 ug/l, 3/19/94: 0.90 ug/l, 11/10/94: 2.88 ug/l, 3/10/95: 0.78 ug/l, 12/12/95: 13.04 ug/l, 1/31/96: 1.21 ug/l, 2/19/96: 3.91 ug/l, 3/4/96: 2.21 ug/l, 3/13/96; 3.41 ug/l, 10/30/96: 8.77 ug/l, 11/21/96: 1.88 ug/l, 12/9/96: 2.11 ug/l, 11/26/97: 1.52 ug/l, 1/9/98: 1.16 ug/l, 2/3/98: 0.95 ug/l, 3/25/98: 1.29 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5974
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, all were reported as non detect and the detection limit was above the criteria so none of the samples were used in the assessment. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): cadmium 6/8/94: 8.99 ug/l, 8/16/94: 8.16 ug/l, 11/1/94: 7.41 ug/l, 6/6/95: 8.16 ug/l, 8/14/95: 7.03 ug/l, 7/30/96: 7.14 ug/l, 8/20/97: 7.14 ug/l, 7/29/98: 6.60 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The 7 samples were taken on 6/8/1994
8/16/1994, 11/1/1994, 6/6/1995, 8/14/1995, 7/30/1996, 8/20/1997, 7/29/1998
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5971
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 20
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 20 samples taken, 1 exceeded the acute CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the unnecessary need to list this waterbody for cadmium.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute (this criteria varies according to hardness as follows): cadmium: 3/19/94: 1.61 ug/l, 11/10/94: 12.07 ug/l, 1/23/95: 1.84 ug/l, 3/10/95: 1.34 ug/l, 1/31/96: 2.02 ug/l, 2/19/96: 9.87 ug/l, 3/4/96: 3.07 ug/l, 3/13/96: 2.88 ug/l, 10/30/96: 12.13 ug/l, 11/21/96: 5.55 ug/l, 12/9/96: 2.21 ug/l, 11/26/97: 2.44 ug/l, 1/9/98: 0.99 ug/l, 2/3/98: 1.03 ug/l, 3/25/98: 6.60 ug/l, 12/24/03: 114.0 ug/l, 2/2/04: 41.21 ug/l, 2/18/04: 35.51 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5962
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 7
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 20 samples taken, one exceeded the CTR standard listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. The cadmium data was reported as total recoverable. In order to compare it to a dissolved metals acute criterion, the concentrations reported were multiplied by a total to dissolved ratio of 2.6 that is site specific for the Santa Ana River and its tributaries. A direct comparison of the data without this adjustment would have resulted in several exceedances resulting in the need to list this waterbody.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life -The acute criteria, which varies according to hardness, was used in determining compliance. The data set included more than 7 samples. A few of these were non detect. However, the detection limit for several of these dates was higher than the criteria. The non detect results for all but 7 entries were the only ones considered during the data analyses.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98. However, since the detection limit was higher than the criteria, only 7 of the samples were considered for the data analyses and this listing.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):
 
DECISION ID
12977
 
Pollutant: Chemical oxygen demand (COD)
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of ten samples exceeded the Basin Plan 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that though this water body is impaired for sediment toxicity, these water body-pollutant combinations should not be placed on the section 303(d) list because applicable water quality standards for these pollutants are not being exceeded
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12977
 
LOE ID: 7958
 
Pollutant: Chemical oxygen demand (COD)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the ten samples collected none exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Objective: 30 mg/l
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times during the month for a period of several years beginning with 6/20/2000 through 2/21/2007.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):
 
DECISION ID
13012
 
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Ten line of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of one hundred forty-two (142) samples exceeded the Basin Plan 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 13012
 
LOE ID: 7956
 
Pollutant: Chloride
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 142
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 142 samples taken, none exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Recommended Ambient Water Quality Criteria Freshwater Aquatic Life Protection Recommended Criteria Maximum Concentration 1-hr avg 860 mg/l
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology. 4304T
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times during the month for a period of several years beginning with 6/20/2000 through 2/21/2007.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):
 
DECISION ID
13015
 
Pollutant: Diazinon
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. One (1) of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One (1) of three (3) samples exceeded the California Department of Fish and Game Criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 13015
 
LOE ID: 7816
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: of the three samples collected only one exceeded the guideline.
Data Reference: Concentrations of Pesticides in the waterbodies in the Santa Ana Region
 
Water Quality Objective/Criterion: Santa Ana Region’s Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Department of Fish and Game 0.08 ppb
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
 
Spatial Representation: The samples were collected at the following stations: Cucamonga Creek Near Upland California_USGS NAWQA site, Cucamonga Creek Main Channel at Chino ave Near Ontario California_USGS NAWQA site, Cucamonga Creek Near Mira Loma California_USGS NAWQA site.
Temporal Representation: The samples were collected on 8/8/00, 8/9/00, 8/16/00.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it came from the Department of Pesticide Regulation.
QAPP Information Reference(s):
 
DECISION ID
12996
 
Pollutant: Iron
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Nine (9) lines of evidence are available in the administrative record to assess this pollutant. Two of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Two of twenty three (23) samples exceeded the EPA National Recommended Criteria during the dry season and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Several other samples were collected that exceed the recommended criteria but these samples were collected during the wet weather and the chronic reccomended criteria does not apply.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. The standard that is available for this pollutant applies to the dry season only because it is a chronic standard. Acute standards apply to wet season conditions.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12996
 
LOE ID: 6007
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 41
Number of Exceedances: 39
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 41 samples taken, 39 exceeded the reccomended criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: chronic reccomended criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25676
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: iron reccomended chronic criteria 4-day avg. 1000 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6021
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 35
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples taken, 35 exceeded the reccomended criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: chronic reccomended criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly since 2/17/94 through 2/19/2004.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25664
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, one exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: chronic reccomended criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25681
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, one exceeded the reccomended criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: reccomended chroinic criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected in the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5990
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 37
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples taken, 37 exceeded the reccomended criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: chronic reccomended criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly since 2/17/1994 through 2/19/2004.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5980
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 20
Number of Exceedances: 20
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 20samples taken, all exceeded the reccomended criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: reccomended chronic criteria for iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were collected monthly since 2/17/1994 through 4/17/2000 during the wet weather.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5964
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 22
Number of Exceedances: 22
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 22 samples taken, 22 exceeded the reccomended criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: chronic reccomended criteria iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly starting with 2/17/1994 through 4/17/2000 during the wet weather's first flush.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6013
 
Pollutant: Iron
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 37
Number of Exceedances: 34
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 37 samples taken, 34 exceeded the reccomended criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: iron 4-day avg. 1000 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were collected monthly since 2/17/94, through 2/18/2004.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):
 
DECISION ID
12963
 
Pollutant: Mercury
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
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Nine (9) lines of evidence are available in the administrative record to assess this pollutant. Four (4) of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Four 94) of 194 samples exceeded the EPA's National Recommended Criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12963
 
LOE ID: 25682
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 36
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 36 samples taken, none exceeded the recommended cirteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute recommended criteira of 1.4 ug/ll.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly since 2/17/1994 thorugh 2/18/2004 during the wet season.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 5967
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, 1 exceeded the recommended criteria listed. More samples than 24 were collected at the station but only 24 had reported values that were higher than the detection limit and could be compared to the recommended criteria. The other values were reported as non detect and the detection limit was higher than the recommended criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute criteria 1.4 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 3/19/1994
11/10/1994, 1/23/1995, 3/10/1995, 12/12/1995, 1/31/1996, 2/19/1996, 3/4/1996, 3/13/1996, 10/30/1996, 11/21/1996, 12/9/1996, 11/26/1997,, 1/9/1998, 2/3/1998, 3/25/1998, 11/8/1998, 1/25/1999, 2/9/1999, 3/16/1999, 4/7/1999
1/25/2000, 2/27/2000, 3/4/2000, 4/17/2000, 1/8/2001,1/24/2001, 2/23/2001, 4/7/2001, 11/13/2001, 11/24/2001, 1/27/2002, 3/17/2002, 11/8/2002, 2/11/2003
3/15/2003, 12/24/2003, 2/2/2004, 2/18/2004,
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 5982
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 24
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 24 samples taken, one exceeded the reccomended criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute reccomended criteria 1.4 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly in the wet weather beginningn with 2/17/1994 through 4/17/2000
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 5987
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, all were reported as non detect and the detection limit was higher than the recommended criteria so non onf the samples were used to determine the rate of exceedance. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury 4-day avg. 0.77 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The 7 samples were taken on 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 5992
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples taken, all were non detect and the detection limit was below the recommended criteria so none of them exceeded the reccommended criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute recommended criteria 1.4 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 2/24/01, 2/23/01, 4/7/01, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 6006
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples taken, 1 exceeded the recommended criteria listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute recommended criteria 1.4 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly in the wet season from February 17,1994 through February 18, 2004
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 6014
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 34
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 34 samples taken, 1 exceeded the recommended criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury acute recommended criteria of 1.4 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were collected on: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 1/25/00, 1/8/01, 1/24/01, 2/23/01, 4/7/01, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 6020
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, the detection limit was higher than the criteria used to assess the beneficial use. That is why none of the samples were taken into account when determining the rate of exceedance. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury 4-day avg. acute criteria 0.77 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly since June 1994 through July 1998 in the dry season.
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):

 
LOE ID: 25666
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, all were reported as non detect and the detection limit was above the recommended criteria so none of the samples were counted to determine the rate of exceedances. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: US EPA National Ambient Water Quality Criteria Toxicity: Mercury 4-day avg. 0.77 ug/l.
Guideline Reference: Compilation of Water Quality Goals
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data was provided by an NPDES discharger in compliance with the permit's monitoring requirements.
QAPP Information Reference(s):
 
DECISION ID
16514
 
Pollutant: Silver
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Ten (10) lines of evidence are available in the administrative record to assess this pollutant. One of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One (1) of 37 samples exceeded the CTR criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 16514
 
LOE ID: 5991
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 19 samples taken, all were reported as non detect and of these only one was used in the assessmnet because the detection limit of this one was below the criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 2/17/94: 0.40 ug/l, 3/19/94: 0.84 ug/l , 11/10/94: 4.41 ug/l, 1/23/95: 0.30 ug/l, 3/10/95: 0.51 ug/l, 1/31/96: 0.54 ug/l, 2/19/96; 6.37 ug/l, 3/4/96: 1.07 ug/l, 3/13/96: 0.28 ug/l, 10/30/96: 33.31 ug/l, 11/21/96: 1.54 ug/l, 12/9/96: 1.11 ug/l, 11/26/97: 1.23 ug/l, 1/9/98: 0.70 ug/l, 2/3/98: 0.57 ug/l, 3/25/98: 3.32 ug/l, 12/24/03: 4.78 ug/l, 2/2/04: 2.89 ug/l, 2/18/04: 0.91 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5977
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Sixteen samples were taken and these were reported as non detect. Of these only one had a detection limit below the CTR standard. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): silver: 2/17/94: 0.48 ug/l, 3/19/94: 0.35 ug/l, 11/10/94: 2.04 ug/l, 3/10/95: 0.28 ug/l, 12/12/95: 20.44 ug/l, 1/31/96: 0.54 ug/l, 2/19/96: 3.26 ug/l, 3/4/96: 1.36 ug/l, 3/13/96: 2.65 ug/l, 10/30/96: 11.15 ug/l, 11/21/96: 1.07 ug/l, 12/9/96: 1.27 ug/l, 11/26/97: 0.77 ug/l, 1/9/98: 0.51 ug/l, 2/3/98: 0.37 ug/l, 3/25/98: 0.60 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5988
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Eight samples were taken at this station and all of these were reported as non detect. The detection limit was above the CTR criteria so none of the samples were used in the assessment. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 6/8/94: 11.58 ug/l, 8/16/94: 10 ug/l, 11/1/94: 8.63 ug/l, 6/6/95: 10 ug/l, 8/14/95: 7.97 ug/l, 7/30/96: 8.15 ug/l, 8/20/97: 8.15 ug/l, 7/29/98: 7.24 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25678
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, only 5 were used in the assessment because the other 3 were reported as non detect and the detection limit was above the criteria. Of the 5 remaining, none exceeded the criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: this criteria varies according to hardness as follows: Silver: 6/8/94: 7.60 ug/l, 8/16/94: 15.14 ug/l, 11/1/94: 7.06 ug/l, 6/6/95: 13.14 ug/l, 8/14/95: 21.42 ug/l, 7/30/96: 6.37 ug/l, 8/20/97: 17 ug/l, 7/29/98: 19.63 ug/l;
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25686
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: None of the samples taken exceeded the standard. This data came from the database compiled by Wildermouth Environmental Consulting Services on behalf of the sewage treatment dischargers in the upper Santa An River watershed.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Basin Plan objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: The California Toxics Rule cadmium criteria is hardness dependent and ranged as follows: silver - 5.47 ppb
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The sample was taken in Cucamonga Creek near Mira Loma
Temporal Representation: The sample was taken on 8/16/2005
Environmental Conditions: The sample was taken during the dry season conditions.
QAPP Information: The data's quality is deemed acceptable because it was submitted by an NPDES discharger in accordance with its Monitoring and Reporting Requirements.
QAPP Information Reference(s):

 
LOE ID: 5968
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: 15 samples were collected and all were reported as non detect and of these only three had detection limits bekiw the criteria. So only three were used in the assessment.. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies with hardness as folows:) 3/19/94: 1.32 ug/l, 11/10/94: 21 ug/l, 3/10/95: 0.14 ug/l, 12/12/95: 97.8 ug/l, 1/31/96: 1.32 ug/l, 2/19/96: 9.11 ug/l, 3/4/96: 0.99 ug/l, 3/13/96: 0.88 ug/l, 10/30/96: 71.48 ug/l, 11/21/96: 3.45 ug/l, 12/9/96: 1.99 ug/l, 11/26/97: 2.28 ug/l, 1/9/98: 0.32 ug/l, 2/3/98: 0.4 ug/l, 3/25/98: 0.60 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25668
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, none exceeded the standards/guidelines listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: The following criteria varies according to hardness: silver: 6/8/94: 27.48 ug/l, 8/16/94: 14.19 ug/l, 6/6/95: 20.72 ug/l, 8/14/95: 22.41 ug/l, 7/30/96: 15.75 ug/l, 8/20/97: 15.75 ug/l, 7/29/98: 22.41 ug/l;
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6005
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Nineteen samples were taken butt of these 14 were reported as non detect and the detection limit was above the CTR criteria. Of the remaining 5 samples, non exceeded the CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 2/17/94: 1.99 ug/l, 3/19/94: 1.88 ug/l, 11/10/94: 3.65 ug/l, 1/23/95: 49.49 ug/l, 3/10/95: 1.41 ug/l, 12/12/95: 21.84 ug/l, 1/31/96: 7.24 ug/l, 2/19/96: 5.55 ug/l, 3/4/96: 9.11 ug/l, 3/13/96: 4.78 ug/l, 11/21/96: 2.47 ug/l, 12/9/96: 2.09 ug/l, 11/26/97: 1.54 ug/l, 1/9/98: 2.59 ug/l, 2/3/98: 1.36 ug/l, 3/25/98: 8.15 ug/l, 12/25/03: 2.65 ug/l, 2/3/04: 11.15 ug/l, 2/19/04: 3.99 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/3/04, 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6000
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 10
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: 18 samples were taken but only 10 of these were used in the assessment because out of all the samples that were reported as non detect, only 10 had detection lmiits below the criteria. Of these 10, none exceeded the criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 3/19/94: 7.15 ug/l, 11/10/94: 9.11 ug/l, 1/23/95: 28.89 ug/l, 3/10/95: 1.88 ug/l, 12/12/95: 101.27 ug/l, 1/31/96: 4.78 ug/l, 2/19/96: 10.11 ug/l, 3/4/96: 12.24 ug/l, 3/13/96: 4.78 ug/l, 11/21/96: 8.15 ug/l, 12/9/96: 2.59 ug/l, 11/26/97: 3.19 ug/l, 1/9/98: 2.71 ug/l, 2/3/98: 2.14 ug/l, 3/25/98: 6.37 ug/l, 12/25/03: 5.55 ug/l, 2/2/04: 4.78 ug/l, 2/18/04: 22.41 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 1/23/95, 3/10/95, 12/12/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/25/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5995
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 4
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 18 samples taken, most were reported as non detect and of these only 3 had detection limits below the criteria and only one was reported above the detection limit and it exceeded the criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): silver 3/19/94: 0.84 ug/l, 11/10/94: 18.17 ug/l, 1/23/95: 1.03 ug/l, 3/10/95: 0.63 ug/l, 1/31/96: 1.19 ug/l, 2/19/96: 13.37 ug/l, 3/4/96: 2.25 ug/l, 3/13/96: 2.04 ug/l, 10/30/96: 18.30 ug/l, 11/21/96: 5.55 ug/l, 12/9/96: 1.36 ug/l, 11/26/97: 1.59 ug/l, 1/9/98: 0.40 ug/l, 2/3/98: 0.43 ug/l, 3/25/98: 7.24 ug/l, 12/24/03: 6.37 ug/l, 2/2/04: 1.64 ug/l, 2/18/04: 1.32 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):
 
DECISION ID
13018
 
Pollutant: Sodium
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
 
Weight of Evidence: (DO NOT LIST - CONVENTIONAL POLLUTANT)
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 (1) line of evidence are available in the administrative record to assess this pollutant. Five (5) of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Five (5) of one hundred forty-three (143) samples exceeded the Basin Plan 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 13018
 
LOE ID: 7959
 
Pollutant: Sodium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 143
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 143 samples five exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Objective: 110 mg/l
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times during the month for a period of several years beginning with 6/20/2000 through 2/21/2007.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):
 
DECISION ID
13001
 
Pollutant: Sulfates | Total Nitrogen as N
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
 
Weight of Evidence: (DO NOT LIST - CONVENTIONAL POLLUTANT)
This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.

Two lines of evidence are available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of one hundred forty-one samples for sulfate and none of forty-three samples for total nitrogen exceeded the Basin Plan Objectives 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 13001
 
LOE ID: 7975
 
Pollutant: Total Nitrogen as N
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 43
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 43 samples collected none exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Objective: 10 mg/l
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times during the month for a period of several years beginning with 4/5/2006 through 2/21/2007
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):

 
LOE ID: 7968
 
Pollutant: Sulfates
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 141
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 141 samples collected none exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Objective: 150 mg/l
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times per month for a period of several years beginning with 6/20/2000 through 2/21/2007.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):
 
DECISION ID
13017
 
Pollutant: Total Dissolved Solids
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
 
Weight of Evidence: (DO NOT LIST - CONVENTIONAL POLLUTANT)
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 (1) line of evidence is available in the administrative record to assess this pollutant. One (1) of the samples exceed the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One (1) of one hundred forty (140) samples exceeded the Basin Plan 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.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 13017
 
LOE ID: 7972
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 140
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 140 samples collected only one exceeded the Basin Plan's objective.
Data Reference: 2006 HCMP Database
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Objective: 700 mg/l
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at one station in Cucamonga Creek Near Mira Loma.
Temporal Representation: The samples were collected multiple times during the month for a period of several years beginning with 6/20/2000 through 2/21/2007.
Environmental Conditions:
QAPP Information: The data's quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program.
QAPP Information Reference(s):
 
DECISION ID
12979
 
Pollutant: Copper
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: Source Unknown
Expected TMDL Completion Date: 2022
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Nine lines of evidence are available in the administrative record to assess this pollutant. One thirty-six (136) of the samples exceed the acute CTR criteria during the wet season. Two (2) out of 23 samples exceed the chronic CTR criteria during the dry season.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One hundred thirty-six (136) of one hundred ninety-one (191) samples exceed the California Toxics Rule acute criteria and 2 out of 23 samples exceed the chronic criteria and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, 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.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12979
 
LOE ID: 6001
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 33
Number of Exceedances: 15
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 33 samples taken, 15 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 3/19/94: 19.09 ug/l, 11/10/94: 21.8 ug/l, 1/23/95: 41.02 ug/l, 3/10/95: 9.19 ug/l, 12/12/95: 81.54 ug/l, 1/31/96: 15.31 ug/l, 2/19/96: 23.08 ug/l, 3/4/96: 25.63 ug/l, 3/13/96: 15.31 ug/l, 11/21/96: 20.51 ug/l, 12/9/96: 10.94 ug/l, 11/26/97: 12.28 ug/l, 1/9/98:11.21 ug/l, 2/3/98: 9.87 ug/l, 3/25/98: 17.92 ug/l, 12/25/03: 16.6 ug/l, 2/2/04: 15.3 ug/l, 2/18/04: 35.7 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly starting on 2/17/1994 through 2/18/2004.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6004
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 39
Number of Exceedances: 18
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 39 samples taken, 18 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 2/17/94: 9.46 ug/l, 3/19/94: 9.19 ug/l, 11/10/94: 13.21 ug/l, 1/23/95: 55.09 ug/l, 3/10/95: 7.83 ug/l, 12/12/95: 35.19 ug/l, 1/31/96: 19.22 ug/l, 2/19/96: 16.62 ug/l, 3/4/96: 21.8 ug/l, 3/13/96: 15.31 ug/l, 11/21/96: 10.68 ug/l, 12/9/96: 9.73 ug/l, 11/26/97: 8.24 ug/l, 1/9/98: 10.94 ug/l, 2/3/98: 7.70 ug/l, 3/25/98: 20.51 ug/l, 12/25/03: 11.08 ug/l, 2/3/04: 24.36 ug/l, 2/19/04: 13.86 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly starting with : 2/17/94 through 2/19/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5997
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 36
Number of Exceedances: 32
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 36 samples taken, all 32 exceeded the CTR criteria. This data was assessed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 2/17/94: 3.93 ug/l, 3/19/94: 5.90 ug/l, 11/10/94: 14.66 ug/l, 1/23/95: 3.36 ug/l, 3/10/95: 4.50 ug/l, 1/31/96: 4.64 ug/l, 2/19/96: 17.92 ug/l, 3/4/96: 6.74 ug/l, 3/13/96: 3.22 ug/l, 10/30/96: 44.35 ug/l, 11/21/96: 8.24 ug/l, 12/9/96: 6.87 ug/l, 11/26/97: 7.29 ug/l, 1/9/98: 5.35 ug/l, 2/3/98: 4.78 ug/l, 3/25/98: 12.54 ug/l, 12/24/03: 15.31 ug/l, 2/2/04: 11.61 ug/l, 2/18/04: 6.18 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 2/17/94, 3/19/94, 11/10/94, 1/23/95, 3/10/95, 1/31/96, 2/19/96, 3/4/96, 3/13/96, 10/30/96, 11/21/96, 12/9/96, 11/26/97, 1/9/98, 2/3/98, 3/25/98, 12/24/03, 2/2/04, 2/18/04.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5970
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 37
Number of Exceedances: 35
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 37 samples taken, 35 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly starting with 2/17/1994 through 2/18/2004.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5975
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 8
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, 1 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): 6/8/94: 24.87 ug/l, 8/16/94: 22.95 ug/l, 11/1/94: 21.16 ug/l, 6/6/95: 22.95 ug/l, 8/14/95: 20.25 ug/l, 7/30/96: 20.51 ug/l, 8/20/97: 20.51 ug/l, 7/29/98: 19.74 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The 7 samples were taken monthly starting on 6/8/94 through 7/29/1998.
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5978
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 23
Number of Exceedances: 16
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 23 samples taken, 16 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): copper: 2/17/94: 4.36 ug/l, 3/19/94: 3.65 ug/l, 11/10/94: 9.6 ug/l, 3/10/95: 3.22 ug/l, 12/12/95: 33.94 ug/l, 1/31/96: 4.64 ug/l, 2/19/96: 12.41 ug/l, 3/4/96: 7.7 ug/l, 3/13/96: 11.08 ug/l, 10/30/96: 24.36 ug/l, 11/21/96: 6.74 ug/l, 12/9/96: 7.42 ug/l, 11/26/97: 5.63 ug/l, 1/9/98: 4.50 ug/l, 2/3/98: 3.79 ug/l, 3/25/98: 4.93 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: monthly starting with 2/17/94 through 4/17/2000.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25663
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 7 samples taken, one exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life: The following criteria varies according to hardness: copper: 6/8/94: 39.91 ug/l, 8/16/94: 27.78 ug/l, 6/6/95: 34.14 ug/l, 8/14/95: 35.69 ug/l, 7/30/96: 29.43 ug/l, 8/20/97: 29.43 ug/l, 7/29/98: 35.69 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25675
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: the criteria for varies according to hardness as follows: Copper: 6/8/94: 19.74 ug/l, 8/16/94: 28.8 ug/l, 11/1/94: 18.96 ug/l, 6/6/95: 26.65 ug/l, 8/14/95: 34.82 ug/l, 7/30/96: 17.92 ug/l, 8/20/97: 30.68 ug/l, 7/29/98: 33.19 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5965
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 23
Number of Exceedances: 20
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 23 samples taken, 20 exceeded the CTR criteria. This data was analyzed using the total to dissolved ratio translators that were derived from the Use Attainability Analyses for the Santa Ana River and its tributaries. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness .
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly starting on 6/8/1994 through 7/29/1998.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):
 
DECISION ID
12982
 
Pollutant: Zinc
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: Source Unknown
Expected TMDL Completion Date: 2022
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Nine (9) lines of evidence are available in the administrative record to assess this pollutant. One hundred sixty-six (166) of the samples exceed the CTR acute criteria and none exceeded the chronic criteria.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One hundred sixty-six (166) of one hundred eighty-five (185) samples exceed the California Toxics Rule and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, 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.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 12982
 
LOE ID: 5821
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 27
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples collected, 27 exceeded the CTR acute criteria.. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District for their sewage treatment plant.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acuter criteria changes based on hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 38 samples were collected from one station located 75 feet east of the Hellman Avenue Bridge located between Pine Avenue/Schleisman Rd. and Chino-Corona Rd./Chandler St.on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken monthly starting on on 2/17/94, through 2/19/04.
Environmental Conditions: The samples were collected during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5969
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 21
Number of Exceedances: 21
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 21 samples taken, all exceeded the CTR acute criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): zinc 3/19/94: 68.85 ug/l, 11/10/94: 269.23 ug/l, 3/10/95: 22.65 ug/l, 12/12/95: 574.49 ug/l, 1/31/96: 68.85 ug/l, 2/19/96: 178.43 ug/l, 3/4/96: 59.76 ug/l, 3/13/96: 56.29 ug/l, 10/30/96: 492.26 ug/l, 11/21/96: 110.61 ug/l, 12/9/96: 84.26 ug/l, 11/26/97: 88.57 ug/l, 1/9/98: 34.49 ug/l, 2/3/98: 38.27 ug/l, 3/25/98: 46.83 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly starting on 2/17/94 through 4/17/2000.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5976
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 20
Number of Exceedances: 19
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 20 samples taken, 19 exceeded the CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria varies with hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were collected at Baseline Road and Alta Cuesta Avenue from the gauging station located 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly starting with 2/17/94 through 4/17/2000.
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5996
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 35
Number of Exceedances: 35
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 35 samples taken, all exceeded the CTR criteria listed. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria varies with hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly starting with 2/17/94 through 2/18/04.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 5999
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 38
Number of Exceedances: 37
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 38 samples taken, 37 exceeded the acute criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria varies with hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken monthly starting with 2/17/94 through 2/19/04
Environmental Conditions: The samples were taken during the wet weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 6002
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Limited Warmwater
 
Number of Samples: 33
Number of Exceedances: 27
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 33 samples taken, 27exceeded the acute CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life acute criteria varies according to hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates monthly starting on : 2/17/1994 through 2/18/2004.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25679
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: The criteria varies according to hardness as follows:
Zinc: 6/8/94: 163.19 ug/l, 8/16/94: 229.19 ug/l, 11/1/94: 157.41 ug/l, 6/6/95: 213.74 ug/l, 8/14/95: 271.86 ug/l, 7/30/96: 149.64 ug/l, 8/20/97: 242.67 ug/l, 7/29/98: 260.43 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25680
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the CTR chronic criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule: The criteria varies according to hardness as follows: Zinc: 6/8/94: 163.19 ug/l, 8/16/94: 229.19 ug/l, 11/1/94: 157.41 ug/l, 6/6/95: 213.74 ug/l, 8/14/95: 271.86 ug/l, 7/30/96: 149.64 ug/l, 8/20/97: 242.67 ug/l, 7/29/98: 260.43 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from one station located 75 feet east of the Hellman Avenue Bridge, between Pine Avenue/Schleisman Road and Chino Corona Road/Chandler Street on the south side of Cucamonga Creek Channel near the City of Chino in San Bernardino County.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98
Environmental Conditions: The samples were taken during the dry weather
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25683
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 8 samples taken, none exceeded the standards/guidelines listed above. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Life (this criteria varies according to hardness as follows): Zinc: 6/8/94: 200.86 ug/l, 8/16/94:186.89 ug/l, 11/1/94: 173.69 ug/l, 6/6/95: 186.89 ug/l, 8/14/95: 167.02 ug/l, 7/30/96: 168.93 ug/l, 8/20/97: 168.93 ug/l, 7/29/98: 159.34 ug/l.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The samples were taken from the Cucamonga Creek Channel at the gauging station located 400 feet south of Highway 60 across from the Chino Basin Municipal Water District Wastewater Treatment Plant on the east side of Cucamonga Creek Channel in the City of Ontario.
Temporal Representation: The samples were taken on the following dates: 6/8/94, 8/16/94, 11/1/94, 6/6/95, 8/14/95, 7/30/96, 8/20/97, 7/29/98.
Environmental Conditions: The samples were collected in the wet weather's first flush.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):

 
LOE ID: 25669
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
Aquatic Life Use: Warm Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Of the 6 samples taken, none exceeded the chronic CTR criteria. This data was obtained from the self monitoring reports submitted by San Bernardino County Flood Control District Storm Water Program.
Data Reference: San Bernardino County Flood Control District data from storm water program.
 
Water Quality Objective/Criterion: Santa Ana Region's Basin Plan Narrative Objective: The concentrations of toxic pollutants in the water column, sediments, or biota shall not adversely affect beneficial uses.
Objective/Criterion Reference: Water Quality Control Plan-Santa Ana Region
 
Evaluation Guideline: California Toxics Rule Aquatic Lifechronic criteria varies with hardness.
Guideline Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Spatial Representation: The 7 samples were collected at the Baseline Road at Alta Cuesta Avenue. The samples were collected from one gauging station 20 feet south of Baseline Road on the west side of Cucamonga Creek Channel in the City of Rancho Cucamonga.
Temporal Representation: The samples were taken monthly starting on 6/8/1994 through 7/29/1998
Environmental Conditions: The samples were collected during the dry weather.
QAPP Information: The data’s quality is deemed appropriate because it originated from an NPDES discharger in compliance with their monitoring and reporting program requirements.
QAPP Information Reference(s):