| |
| LOE ID: |
26847 |
| |
| Pollutant: |
2, 6- diethylaniline | 2-chloro-4-isopropylamino-6-amino-s-triazine | Alachlor | Atrazine | Azinphos-methyl (Guthion) | Benefin | Butylate | Carbaryl | Carbofuran | Chlorpyrifos | Cyanazine | DDE (Dichlorodiphenyldichloroethylene) | Dacthal | Diazinon | Dieldrin | Disulfoton | Dyfonate (Fonofos or Fonophos) | EPTC (Eptam, s-ethyl dipropylthiocarbamate) | Ethalfluralin | Ethoprop | Hexachlorobenzene/ HCB | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Linuron | Malathion | Methyl Parathion | Metolachlor | Metribuzin | Molinate | Napropamide | Parathion | Pebulate | Pendimethalin | Permethrin, total | Phorate | Prometon (Prometone) | Pronamide | Propachlor | Propanil (DCPA mono- and di-acid degrad) | Propargite | Simazine | Tebuthuron | Terbacil | Terbufos | Thiobencarb/Bolero | Triallate | Trifluralin |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Not Recorded |
| |
| Beneficial Use: |
Cold Freshwater Habitat |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Fixed station physical/chemical (conventional plus toxic pollutants) |
| Data Used to Assess Water Quality: |
The California Department of Pesticide Regulation's online database includes data for the Upper Truckee River at South Lake Tahoe. These data were collected in May, June, July and August 1994 as part of the U.S. Geological Survey's
National Water Quality Assessment (NAWQA) program. None of the 46 pesticides analyzed in each of 4 samples were detected. |
| Data Reference: |
Department of Pesticide Regulation Database Records for the West Fork Carson River and Upper Truckee Rivers. |
| |
| Water Quality Objective/Criterion: |
Documentation of water quality criteria for individual pollutants in Lines of Evidence for multipollutant datasets is not required, except for pollutants that exceed a standard or criterion. There are no state or federal water quality standards or criteria for pebulate, the only detectable pollutant in this dataset. The Lahontan Basin Plan includes a narrative water quality objective for pesticides in surface waters that provides that: "Pesticide concentrations, individually or collectively, shall not exceed the lowest detectable leves, using the most recent detection procedures available." For waters designated for the Municipal and Domestic Supply beneficial use, the water quality objective references the California Maximum Contaminant Levels (MCLs) for pesticides. |
| Objective/Criterion Reference: |
2007. Water Quality Control Plan for the Lahontan Region (as amended). |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
One station, Upper Truckee River at South Lake Tahoe, was sampled. |
| Temporal Representation: |
Samples were collected on May 10, June 13, July 12, and August 8, 1994 and analyzed for the 46 listed pesticides. |
| Environmental Conditions: |
The Upper Truckee River is the largest tributary of Lake Tahoe in terms of flow. Due to the large size of Lake Tahoe and the long residence time of water in the lake (about 700 years), water quality in the Upper Truckee River does not directly influence the quality of the Truckee River downstream of Lake Tahoe. The Lahontan Basin Plan considers the two streams to be separate water bodies for planning purposes. The lower portion of the Upper Truckee River watershed includes the urbanized areas of Meyers and South Lake Tahoe. |
| QAPP Information: |
The data meet USGS quality assurance requirements. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
26848 |
| |
| Pollutant: |
2, 6- diethylaniline | 2-chloro-4-isopropylamino-6-amino-s-triazine | Alachlor | Atrazine | Azinphos-methyl (Guthion) | Benefin | Butylate | Carbaryl | Carbofuran | Chlorpyrifos | Cyanazine | DDE (Dichlorodiphenyldichloroethylene) | Dacthal | Diazinon | Dieldrin | Disulfoton | Dyfonate (Fonofos or Fonophos) | EPTC (Eptam, s-ethyl dipropylthiocarbamate) | Ethalfluralin | Ethoprop | Hexachlorobenzene/ HCB | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Linuron | Malathion | Methyl Parathion | Metolachlor | Metribuzin | Molinate | Napropamide | Parathion | Pebulate | Pendimethalin | Permethrin, total | Phorate | Prometon (Prometone) | Pronamide | Propachlor | Propanil (DCPA mono- and di-acid degrad) | Propargite | Simazine | Tebuthuron | Terbacil | Terbufos | Thiobencarb/Bolero | Triallate | Trifluralin |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Not Recorded |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Fixed station physical/chemical (conventional plus toxic pollutants) |
| Data Used to Assess Water Quality: |
The California Department of Pesticide Regulation's online database includes data for the Upper Truckee River at South Lake Tahoe. These data were collected in May, June, July and August 1994 as part of the U.S. Geological Survey's
National Water Quality Assessment (NAWQA) program. None of the 46 pesticides analyzed in each of 4 samples were detected. |
| Data Reference: |
Department of Pesticide Regulation Database Records for the West Fork Carson River and Upper Truckee Rivers. |
| |
| Water Quality Objective/Criterion: |
Documentation of water quality criteria for individual pollutants in Lines of Evidence for multipollutant datasets is not required, except for pollutants that exceed a standard or criterion. There are no state or federal water quality standards or criteria for pebulate, the only detectable pollutant in this dataset. The Lahontan Basin Plan includes a narrative water quality objective for pesticides in surface waters that provides that: "Pesticide concentrations, individually or collectively, shall not exceed the lowest detectable leves, using the most recent detection procedures available." For waters designated for the Municipal and Domestic Supply beneficial use, the water quality objective references the California Maximum Contaminant Levels (MCLs) for pesticides. |
| Objective/Criterion Reference: |
2007. Water Quality Control Plan for the Lahontan Region (as amended). |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
One station, Upper Truckee River at South Lake Tahoe, was sampled. |
| Temporal Representation: |
Samples were collected on May 10, June 13, July 12, and August 8, 1994 and analyzed for the 46 listed pesticides. |
| Environmental Conditions: |
The Upper Truckee River is the largest tributary of Lake Tahoe in terms of flow. Due to the large size of Lake Tahoe and the long residence time of water in the lake (about 700 years), water quality in the Upper Truckee River does not directly influence the quality of the Truckee River downstream of Lake Tahoe. The Lahontan Basin Plan considers the two streams to be separate water bodies for planning purposes. The lower portion of the Upper Truckee River watershed includes the urbanized areas of Meyers and South Lake Tahoe. |
| QAPP Information: |
The data meet USGS quality assurance requirements. |
| QAPP Information Reference(s): |