Draft California 2014 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name: Torrey Canyon Creek
Water Body ID: CAR4034100019990202154317
Water Body Type: River & Stream
Region 4     
Torrey Canyon Creek
Pollutant: Nitrate and Nitrite
Final Listing Decision: List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (being addressed by USEPA approved TMDL)(2012)
Revision Status Original
Sources: Nonpoint Source
TMDL Name: Santa Clara River Nitrogen (32)
TMDL Project Code: 227
Date TMDL Approved by USEPA: 03/18/2004
Impairment from Pollutant or Pollution: Pollutant
Regional Board Staff Conclusion: This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Based on the applicable factor, a TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. The Santa Clara Rive Nitrogen TMDL was approved by RWQCB on August 7, 2003 and subsequently approved by USEPA on March 18, 2004.

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 in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list.
Regional Board Staff Decision Recommendation: This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.
Line of Evidence (LOE) for Decision ID 33592, Nitrate and Nitrite
Region 4     
Torrey Canyon Creek
LOE ID: 2103
Pollutant: Nitrate and Nitrite
LOE Subgroup: Pollutant-Water
Matrix: Not Specified
Fraction: None
Beneficial Use: Municipal & Domestic Supply
Number of Samples: 0
Number of Exceedances: 0
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
Data Reference: Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:
Objective/Criterion Reference:
Evaluation Guideline:
Guideline Reference:
Spatial Representation:
Temporal Representation:
Environmental Conditions:
QAPP Information: QA Info Missing
QAPP Information Reference(s):