Stormwater Drainage Containing Elevated pH Levels Near El Dorado Trail

Regional Water Quality Control Board is the lead agency.  For more information go the State Water Resources GeoTracker website.

Press Releases

• Continued Evaluating of the Stormwater Drainage Containing Elevated pH Levels near the El Dorado Trail - November 18, 2016
• With Continued Rain, El Dorado County Reminds the Public to Avoid Stormwater Drainage Containing Elevated pH Levels near the El Dorado Trail - November 18, 2016
• With Continued Rain, El Dorado County Reminds the Public to Avoid Stormwater Drainage Containing Elevated pH Levels near the El Dorado Trail - March 4, 2016
  
• El Dorado County Community Development Agency Warns of High Levels of Alkaline in Stormwater in an Area Near the El Dorado Trail - January 29, 2016
• Fact Sheet – Investigation of Stormwater Drainage Containing Elevated pH Levels near El Dorado Trail - February 24, 2016

County Investigation Timeline

• Investigation Timeline

Lab and Field Data 

• EXCELCHEM Environmental Labs - June 11, 2013
• EXCELCHEM Environmental Labs - June 13, 2013
• EXCELCHEM Environmental Labs - March 24, 2014
• California Laboratory Services - January 28, 2016
• California Laboratory Services - January 29, 2016
• California Laboratory Services - February 1, 2016
• California Laboratory Services - February 3, 2016
• California Laboratory Services - February 12, 2016
• California Laboratory Services - February 15, 2016
• El Dorado County's pH Monitoring Log for the Area Near the El Dorado County Trail and OES Report

Maps 

• Laboratory Analysis Results -pH Map (pdf) 
• Laboratory Analysis Results - pH Map (GIS map) 
• Field Monitoring Results - pH Map (pdf)
• Field Monitoring Results - pH Map (GIS map)

Photos

• Supporting Photos 1
• Supporting Photos 2