San Francisquito Creek LTMAP Newell Road Station Water Year 2006

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San Francisquito Creek LTMAPNewell Road Station
Water Year 2006

• Brad Eggleston
• City of Palo Alto
• brad.eggleston_at_cityofpaloalto.org
• [phone]

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Newell Station
image from Oakland Museum of California Creek
and Watershed Map of Palo Alto and Vicinity
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San Francisquito Creek at Newell Road
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Water Year 2005 and 2006 Sample Events
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Dissolved Copper Data
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Dissolved Nickel Data
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Dissolved Lead Data
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Hardness Data
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Total Suspended Solids Data
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Total Mercury Data
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Mercury Comparison
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Pyrethroids

• Started for WY05
• Pyrethroids included in Caltest GC/MS analytical
  method
• Bifenthrin
• Cyfluthrin
• Cyhalothrin
• Cypermethrin
• Danitol
• Fenvalerate
• Fluvalinate
• Permethrin
• Resmethrin
• Tralomethrin

• Pyrethroids were non-detect for all 12 sampling
  events
• Reporting limits ranged from 10 to 50 ng/L
• Pyrethroids known to sorb to soil particles ?need
  sediment sampling

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Polycyclic Aromatic Hydrocarbons (PAHs)

• Austin, Texas and USGS found high levels of PAHs
  in streams
• Coal Tar parking lot sealcoats high in PAHs
  compared to asphalt
• For WY06 Newell program added EPA 610 analysis
• All results from 5 samples ND (one j-flag
  detect at 0.024 ppb for pyrene)

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Coming Soon! Data Review and Analysis

• Suggest alternate analytical methods for ND
  data
• Assess temporal and spatial trends for data from
  all sites
• Compare LTMAP data with historical creek data
  where available
• Check compliance with water quality objectives
• Assess correspondence of pollutant data with
  creek flow
• Provide written report of findings and
  recommendations