Our services

Civil Engineering

LDES offers Civil Engineering services to private developers, municipalities, counties, the state of Washington, and Native American tribes in Whatcom, Skagit, and Snohomish Counties.

Process

01

Planning & Site Development

Our experienced staff provides professional services in planning, designing, and project management for
commercial developments and residential/commercial subdivisions. Planning and site development include:

Roadway and Site Design
Sewer and Water Main System Design
Drainage/Stormwater Management Design
Pedestrian Facility Design
Coordination with local agencies
Permitting Assistance Cost Estimate Preparation
Bid Document & Specification Preparation
Bidding Assistance Project Management
Civil Inspection SEPA Support

Stormwater Management

The engineering staff at LDES plans, authorizes, and designs efficient storm management systems that are cost effective and environmentally conscious. These services include:

Stormwater Management System Design
Preparation of Erosion & Sediment Control Plans
Certified Erosion & Sediment Control Lead (CESCL) Inspection
Hydraulic Modeling
Permitting Assistance
Preparation of Stormwater Pollution Prevention Plans (SWPPP)
NPDES Support

02

03

Water Distribution and Sanitary Sewer

Our staff has a strong background on water resources, including domestic water and sanitary sewer facilities. We have extensive experience in planning, design and permitting procedures regarding domestic water and sanitary sewer facilities, both the municipal distribution and collection systems, and large onsite sanitary sewer systems. Water system design includes preparation and coordination of long-term planning documents such as Water System Plans, design reports to obtain approval from local and State agencies and hydraulic modeling of water systems. Water distribution and sanitary sewer services include: