Pteronarcys californica nymph

Representative Project

Clear Creek is a valuable resource in the western part of the Denver metropolitan area, but it is affected by several stressors, including historic mine drainage, urban runoff, and water diversions. Coors Brewing Company retained WWE to conduct a bioassessment of Clear Creek from Golden, Colorado to its confluence with the South Platte River to determine the overall health of aquatic life and potential effects of the various stressors on the creek. 

Benthic organisms were collected and a habitat assessment conducted at multiple stations. An analysis was conducted to determine the influence of water quality, habitat, and other stressors. U.S. Environmental Protection Agency protocols were followed, but modifications were made to account for the unique characteristics of the creek, particularly dewatering. The study characterized the current conditions in the creek and found that benthos were affected to varying degrees by a host of factors. The study proved useful for ongoing water quality management decisions.

Scope of Services

• Benthic organism/fish sampling 
• Bioassessments following EPA protocols 
• Use attainability analysis 
• Impact/stressor evaluation 
• Integration into NPDES permits 
• Habitat assessment 
• Compliance monitoring 
• Biocriteria and program development
• Water disposal alternatives

Representative Clients

• Coors Brewing Company 
• ARCO Coal Company 
• U.S. Department of Energy 
• Adam's Rib Recreation Area 
• City and County of Denver 
• City of Lincoln, Nebraska 
• Omaha Tribe of Nebraska 
• Moon Ridge Ranch