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FIELD NOTES
Date: January 12, 2016 Weather: Clear, 59 degrees.
Personnel: George Turnboo, Don Nizolek, CHMM, REPA
Sampled for pH using plastic pH Indicator Strips, 0.00 – 14.0. A common and reliable test method for
environmental field work for pH indication.
Samples were taken at 5 locations. Sample locations identified on Google Earth Map for the area.
Vicinity
n
Location of ConcerPage 2 of 33
Map – Area of Concern, North Side of El Dorado Trail
Sample Location 1
pH > 13
Sample Location 4
pH = 5 - 6
Pag
Sampl
Sample Location 5
pH = 9
e 3 of 3
e Loca
Sample Location 2
pH = 6 - 7
3
tions
Sample Location 3
pH = 6
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Sample Location 1, Sample #1. North Side of El Dorado Trail. Area of Concern.
Embankment down to area of concern (~ 18 ft. drop).
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Sample Location 1, Sample #1. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #1. North Side of El Dorado Trail. Area of Concern (continued).
Sample Result: pH > 13
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Sample Location 1, Sample #2. North Side of El Dorado Trail. Area of Concern.
Direction of normal stormwater flow within the culvert from the top of the levee during precipitation. No stormwater inflow was observed in
the stormwater culvert at the time of sampling.
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Sample Location 1, Sample #2. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #2. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #2. North Side of El Dorado Trail. Area of Concern (continued).
Sample Result: pH > 13.
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Sample Location 1, Sample #3. North Side of El Dorado Trail. Area of Concern.
Low flow was observed at this sample location. No infow was Prior to taking sample (yellow color).
observed upstream from the levee or stormwater culvert to
contribute to the observed flow, therefore, the water source
could not be determined. pH measurements at 4 locations on the
south side of the trail levee ranged between pH = 5-9. (see Map
on page 3 – Sample Locations).
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Sample Location 1, Sample #3. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #3. North Side of El Dorado Trail. Area of Concern (continued).
Sample Result: pH > 13.
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Sample Location 1, Sample #4. North Side of El Dorado Trail. Area of Concern.
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Sample Location 1, Sample #4. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #4. North Side of El Dorado Trail. Area of Concern (continued).
Sample Result: pH > 13.
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Sample Location 1, Sample #5. North Side of El Dorado Trail. Area of Concern.
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Sample Location 1, Sample #5. North Side of El Dorado Trail. Area of Concern (continued).
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Sample Location 1, Sample #5. North Side of El Dorado Trail. Area of Concern (continued).
Sample Result: pH > 13.
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Sample Summary – 5 Samples
Sample Result: 5 samples @ pH > 13. (Clean yellow strip is baseline).
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Sample Location 2, Sample #1. South Side of El Dorado Trail.
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Sample Location 2, Sample #1. South Side of El Dorado Trail.
Sample Result: pH = 6 - 7.
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Sample Location 3, Sample #1. South Side of El Dorado Trail.
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Sample Location 3, Sample #1. South Side of El Dorado Trail (continued).
Sample Result: pH = 6.
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Sample Location 4, Sample #1. South Side of El Dorado Trail.
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Sample Location 4, Sample #1. South Side of El Dorado Trail.
Sample Result: pH = 5 - 6.
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Sample Location 5, Sample #1. South Side of El Dorado Trail.
Sample Result: pH = 9.
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Public Access Summary
Public Access to High pH Area of Concern (pH > 13).
Public Access to
Sample Location 2.
pH = 6 – 7.
Public Access to Sample Location
1. pH > 13.
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East of Sample Location 1. Looking East.
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East of Sample Location 1. Looking East.
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Looking East along El Dorado Trail at Sample Location 3. pH = 6.
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Prepared by:
Don Nizolek, CHMM, REPAPrincipal Consultant
Nizolek Consulting Group875 Phillip CourtEl Dorado Hills, CA 95762
PHONE: (916) 939-1628CELL: (916) 396-1293Email: [email protected]
Certified Hazardous Materials Manager (CHMM - 0867)Registered Environmental Property Assessor (REPA – 398829)
DATE: January 12, 2016
Updated 1/15/16.
