| Pollutant: |
Glyphosate |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Regional Board Conclusion: |
Data for this water segment ¿ pollutant combination were received by the State Water Resources Control Board as part of the data solicitation for the 2014 Integrated Report Cycle. Data for this water segment-pollutant combination were received by the State Water Resources Control Board as part of the data solicitation for the 2014 Integrated Report Cycle. These data were not assessed as part of the 2014 Integrated Report. |
| |
| Regional Board Decision Recommendation: |
Data for this water segment - pollutant combination were not assessed by RWQCB staff during the 2014 Integrated Report cycle. RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list at this time. These data will be assessed by RWQCB staff during a future Integrated Report cycle to determine the applicable beneficial use support rating. |
| |
| State Board Review of Regional Board Conclusion and Recommendation: |
|
| |
| State Board Decision Recommendation: |
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
| |
| |
Line of Evidence (LOE) for Decision ID 89294, Glyphosate
|
Region 5 |
Lateral Drain 5 (Stanislaus County) |
|
| |
| LOE ID: |
65804 |
| |
| Pollutant: |
Glyphosate |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
9 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Water Board staff assessed Ag Waiver data for Lateral Drain 5 (Stanislaus County) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Glyphosate. |
| Data Reference: |
Data for Various Pollutants in Modesto Irrigation District, 2004-2009.
|
| |
| SWAMP Data: |
Non-SWAMP |
| |
| Water Quality Objective/Criterion: |
The California primary maximum contaminant level for Glyphosate is 700 ug/L. |
| Objective/Criterion Reference: |
Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Data for this line of evidence for Lateral Drain 5 (Stanislaus County) was collected at 2 monitoring sites [Lateral 5 Spill - 535MIDL5S, Lateral 5 at Carpenter Road - 535MIDL5C] |
| Temporal Representation: |
Data was collected over the time period 2/10/2007-1/23/2009. Two pairs of samples were collected within two one-week periods at each monitoring site; the results were averaged for each site and period. |
| Environmental Conditions: |
Staff is not aware of any special conditions that might affect interpretation of the data. |
| QAPP Information: |
Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program. |
| QAPP Information Reference(s): |
| |