Water Body Name: | Keough Hot Springs |
Water Body ID: | CAW6032018319990129104958 |
Water Body Type: | Wetland, Freshwater |
Lines of Evidence (LOEs) for Decision ID 16301 |
LOE ID: | 28012 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 203 |
Number of Exceedances: | 4 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data for Keough Hot Ditch during the 2006-2007 solicitation process. Dissolved oxygen concentrations were measured approximately twice monthly in 2000 and approximately monthly from 2001 to early 2007 For 2000 through 2003, results were reported as low and high concentrations for the same sample, with a few samples reported as average values. For 2004 through 2007, only average concentrations were reported. Including averages of the high and low concentrations reported in the early years, the lowest average dissolved oxygen concentration was ____mg/L for _____, 2003, and the highest average concentration was ____ for ____2000. Four average datapoints for _____ 2003 were below the 3.0 mg/L minimum concentration allowed by the water quality objective. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | The water quality objective (Lahontan Basin Plan Table 3-6) is a 1-ay minimum dissolved oxygen concentration of 3.0 mg/L to protect the Warm Freshwater Habitat beneficial use. (Although the springs are designated for both the WARM and COLD uses, measured temperatures are consistently above ___ degrees Fahrenheit and the WARM use is more appropriate to assess dissolved oxygen conditions for indigenous aquatic life.) |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately twice monthly in 2000 and approximately monthly between 2001 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16296 |
LOE ID: | 28011 |
Pollutant: | Salinity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 197 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted salinity data for Keough Hot Ditch during the 2006-2007 solicitation process. Salinity was measured approxmately twice monthly in 2000 and approximately monthly between 2001 and early 2007. Results reported as "percent salinity," for 2000 to mid-2004 ranged from 0.03 to 0.05 percent. Results reported as parts per thousand (ppt) from mid 2004 to early 2007 ranged from 0.39 to 0.43 ppt. In oceanographic terms water with salinity less than 0.05 percent or less than 0.5 ppt is considered fresh. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | There are no state or federal standards or criteria for salinity for the protection of the Warm Freshwater Habitat beneficial use. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately twic monthly in 2000 and approximately monthly between 2000 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16297 |
LOE ID: | 28010 |
Pollutant: | Specific Conductance |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 187 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data for Keough Hot Ditch during the 2006-2007 solicitation process. Specific conductance was measured approximately twice a month in 2000 and approximately monthly between 2001 and early 2007. Specific conductance in 187 measurements ranged from 0.810 to 1.07 millisiemens per centimeter (mS/cm). Between 2005 and 2007, 50 duplicate samples were taken, ranging from 0.967 to 0.1014 mS/cm. Naturally high specific conductance is expected in geothermal waters of the Lahontan Region. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | There are no state or federal standards or criteria for specific conductance for the protection of the Warm Freshwater Habitat beneficial use. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Measurements were taken at each station approximately twice monthly in 2000 and approximately monthly between 2001 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16485 |
LOE ID: | 27984 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 198 |
Number of Exceedances: | 11 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data during the 2006-2007 solicitation process showing decreases in temperature in the ditch and pools as a result of changes in management of the cooling system used by the resort, and requested listing for violation of the water quality objective. The commission identified samples collected on dates when the resort cooling system was not operating and requested that they be considered to represent background conditions. For 2000, the data include nine samples collected when the resort cooling system was operating with temperatures more than 5 degrees F lower than temperatures at the same stations 1 to 9 days earlier when the cooling system was not operating. The Commission's letter states: "During the period of time from 10/22/06-10/26/06 Keoughs Hot Springs Resort was closed for repair of the resort pools. Commission staff was able to take water temperature measurements at the Keoughs Hot Ditch sites on 10/25/06 during the period when the resort cooling system had been off for several days. The October and November 2006 data shows that water temperatures at Keoughs Hot Ditch changed significantly during the period when the Hot Springs Resort pools were closed for repairs and the cooling system was off (temperature measured on October 25th,
highlighted in yellow) as compared to the water temperatures measured 10-days before (October 5th) and 21-days after (November 15th), when the resort cooling system was operating. Comparing the October 5th (resort cooling system operating) and October 25th (resort cooling system off) water temperature (all measured between 10:00-10:15 am PST) the water at Keoughs Hot Ditch was 5.4-8.1... [degrees] C (9.7-14.6...[degrees] F) cooler when the resort cooling system was operating than when it was shut off. A similar comparison between the temperatures measured on 10/25/06 (cooling system off) and 11/15/06 (cooling system operating) again shows that the water temperatures were again significantly cooler (4.8-7.8...[degrees] C; 8.7-14.0 ...[degrees] F) when the cooling system was operating." (This quotation has been edited to avoid problems with database formatting.) A total of 11 samples documented decreases in temperature greater than 5 degrees when the cooling system was operating compared to the previous samples takenwhen it was not operating. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | The temperature objective in the Lahontan Basin Plan states: "The natural receiving water temperature of all waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such an alteration in temperature does not adversely affect the water for beneficial uses.
For waters designated WARM, water temperature shall not be altered by more than five degrees Fahrenheit ... above or below the natural temperature. For waters designated COLD, the temperature shall not be altered. Temperature objectives for COLD interstate waters and WARM interstate waters are as specified in the 'Water Quality Control Plan for Control of Temperature in The Coastal and Interstate Waters and Enclosed Bays and Estuaries of California' including any revisions." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately twice monthly in 2000 and approximately monthly between 2001 and early 2007. During some years, concurrent samples were collected with two different instruments on some or all of the sampling runs. In addition to the 198 samples noted above, 47 concurrent samples were taken. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): | |
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LOE ID: | 28262 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 26 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The operator of the Keough's Hot Springs resort, Brown's Supply, Inc., measured temperature at each of four stations 14 times between October 2007 and April 2008. Temperature was measured at each of five stations 12 times between December 2008 and February 2009.
The ranges of temperatures were as follows. The first set of numbers is for October 2007 through April 2008; the second set is for December 2008 through February 2009. For the piped discharge from the source springs, 113 to 122 degrees F and 104 to 118.5 degrees F. For the swimming pool outflow, temperatures were 85 to 91. 5 degrees F and 83 to 88 degrees F. For a "mix" station below the confluence of the source and swimming pool discharges, temperatures were 89.5 to 112.5 degrees F. (Temperature was measured only from December 2008 to February 2009.) For a "flume" station below the "mix" station and above the property line, temperatures were 97.5 to 112 degrees F and 89.5 to 97.5 degrees F. For the "property line" station, temperatures were 93.5 to 102 degrees F and 81 to 97/5 degrees F. Except for one sample, temperatures were higher at the "property line" station than in the swimming pool outflow. |
Data Reference: | 2009. Temperature data for stations at Keough's Hot Springs Resort. |
Water Quality Objective/Criterion: | The temperature objective in the Lahontan Basin Plan states: "The natural receiving water temperature of all waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such an alteration in temperature does not adversely affect the water for beneficial uses.
For waters designated WARM, water temperature shall not be altered by more than five degrees Fahrenheit ... above or below the natural temperature. For waters designated COLD, the temperature shall not be altered. Temperature objectives for COLD interstate waters and WARM interstate waters are as specified in the 'Water Quality Control Plan for Control of Temperature in The Coastal and Interstate Waters and Enclosed Bays and Estuaries of California' including any revisions." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Temperature was measured in the swimming pool outflow, in the piped discharge from the source springs, at a "flume" station downstream of the junction of the pool discharge and source spring discharge, and at the "property line" of the resort. Between December 2008 and February 2009, temperature was also measured at a "mix" station below the junction of the pool and source discharges and above the "flume" station. |
Temporal Representation: | . The operator of the Keough's Hot Springs resort, Brown's Supply, Inc., measured temperature at each of four stations 14 times between October 2007 and April 2008. Temperature was measured at each of five stations 12 times between December 2008 and February 2009. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans.
Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | Details on quality assurance were not provided with the data submittal. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16298 |
LOE ID: | 28046 |
Pollutant: | Total Dissolved Solids |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 3 |
Number of Exceedances: | 3 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data for Keough Hot Ditch during the 2006-2007 solicitation process. TDS was sampled approximately monthly in 2005, 2006 and early 2007. Concentrations of TDS in 52 samples ranged from 531 to 1192 mg/L. The annual average objective was violated in 3 of 3 years. (The third year included only two sampling events) |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | There is no site-specific water quality objective (SSO) for Total Dissolved Solids (TDS) in Keough Hot Springs. The objective for the Owens River (Station 23 in Lahontan Basin Plan Table 3-17 ) applies upstream through the tributary rule. It includes an annual average of 207 mg/L and a 90th percentile value of 343 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately monthly between 2000 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16299 |
LOE ID: | 28017 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 185 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data for Keough Hot Ditch during the 2006-2007 solicitation process. Measurements of turbidity taken approximately twice monthly in 2000 and approximately monthly between 2001 and early 2007 (185 samples) ranged from 0 to 48 NTU. Most measurements were between 0 and 2 NTU. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's regionwide objective for turbidity states: "Waters shall be free of changes in turbidity that cause nuisance or adversely affect the water for beneficial uses. Increases in turbidity shall not exceed natural levels by more than 10 percent." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately twice a month in 2000 and approximately monthly between 2001 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16300 |
LOE ID: | 28013 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 190 |
Number of Exceedances: | 16 |
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) |
Data Used to Assess Water Quality: | The Owens Valley Indian Water Commission submitted data for Keough Hot Ditch during the 2006-2007 solicitation process. Measurements of pH taken approximately twice a month in 2000 and approximately monthly between 2001 and early 2007 (190 measurements) ranged from 7.91 to 9.61 units . There were 16 cases where pH changed more than a half unit in a given pool between one month and another. Naturally alkaline pH is to be expected in geothermal waters of the Lahontan Region. |
Data Reference: | 2007. Data for Keough Hot Ditch |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's objective for pH states: "In fresh waters with designated beneficial uses of COLD or WARM, changes in normal ambient pH levels shall not exceed 0.5 pH units. For all other waters of the region, the pH shall not be depressed below 6.5 nor raised above 8.5 units.
The Regional Board recognizes that some waters of the Region may have natural pH levels outside of the 6.5 to 8.5 range. Compliance with the pH objective for these waters will be determined on a case-by-case basis." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Two pools on Keough Hot Ditch (called "Upper" and "Lower" in the data) were sampled. |
Temporal Representation: | Samples were collected at each station approximately twice a a month in 2000 and approximately monthly between 2001 and early 2007. |
Environmental Conditions: | Due to difficulties in georeferencing, this LOE has been prepared for "Keough Hot Springs." The Owens Valley Indian Water Commission monitored "Keough Hot Ditch" downstream from the source springs and and swimming pool discharge.
The Keough Hot Springs are natural geothermal springs with temperatures over 120 degrees F. Part of the flow from the springs is directed to a swimming pool at a resort. When the resort is open, the operator uses a cooling system for water supplied to the pool. Water released from the swimming pool blends with the remainder of the outflow from the springs that has been piped around the resort and enters a ditch with a series of pools. The hot ditch is used for public recreation, and the springs and ditch are culturally important to Native Americans. Keough Hot Springs is designated for the both the Warm Freshwater Habitat and Cold Freshwater Habitat beneficial uses. No data on aquatic life in the springs and their outflow are available. The previously designated (but not existing) Municipal and Domestic Supply beneficial use was removed through Basin Plan amendments effective in 2002. |
QAPP Information: | The data submittal included descriptions of the instruments used and noted that calibration records are available on request. |
QAPP Information Reference(s): |