Environmental Engineering

CRW provides environmental engineering services, including planning, regulatory compliance, design, construction management, and operations assistance for communities throughout the State of Alaska. Our areas of expertise include water and sanitary sewer treatment, snowmelt and stormwater treatment, and solid waste disposal. We provide innovative engineering services so that our clients can provide its customers with sufficient, safe, and adequate supplies of high-quality drinking water at a reasonable cost.


At CRW we recognize the challenges faced by public potable water suppliers to provide high-quality and dependable potable water to our communities. Our environmental engineers utilize the latest technology as well as practical and economical solutions to acquire water sources, construct or upgrade treatment facilities, and improve storage and distribution system infrastructure.

  • Water distribution flow modeling
  • Fire Flow modeling
  • Source water evaluation
  • Pilot testing
  • Water treatment
  • Chemical addition systems
  • Regulatory compliance assistance
  • Licensed operations assistance
  • System/Rate analysis 

Ever increasing environmental protection standards require property owners, businesses, and communities to properly treat its sanitary sewer wastewater before returning it to nature, or for reuse.  Based on our extensive experience as a sanitary sewer treatment designer, CRW can provide the environmental engineering services that best suit the customers' needs.

  • Sanitary sewer flow modeling
  • Pilot testing
  • Biological treatment
  • Chemical addition systems
  • Data inventory, analysis and management
  • Energy recovery system analysis
  • Infiltration/Inflow studies
  • Odor control
  • NPDES permitting and regulatory compliance assistance
  • Licensed operations assistance
  • System/Rate analysis

Landfill planning, design, operations and closure are the backbone of solid waste management for communities throughout Alaska. Our landfill engineering and design services include:

  • Landfill site planning, design and closure plans
  • Leachate collection
  • Windblown waste containment
  • Permitting and regulatory compliance
  • Geotechnical foundation and slope stabilization
  • System/Rate analysis
  • Operation assistance

Removing pollutants from snowmelt and stormwater runoff is an important component to any stormwater management plan. Pollutants, including sediment, trash, nutrients and metals are one of the leading causes of water quality impairment. CRW provides planning, design, and regulatory compliance assistance for specific to a client’s needs. Our staff of engineers utilizes the latest technologies, natural biological treatment options, as well as time proven best management practices to provide solutions to each snowmelt and stormwater treatment need.

  • Snow disposal site planning and design
  • Runoff modeling and analysis
  • Identification of pollutants and removal goals
  • Design of filters
  • Design of hydrodynamic separators
  • Design of biofilters and bioswales
  • Permitting and regulatory compliance
  • Operations assistance