Our team of professionals at LEI Engineering and Surveying  provides a full range of innovative and cost-effective solutions for our clients from design and preparation groundwork to ongoing support until the project is successfully completed.  LEI strives to adhere to green standards in both its internal operations and in the type of professional service products it produces.  For example, LEI worked closely on the Simpson Hill’s project in Salem, Oregon, which included the Pringle Creek Community that was featured in national magazines for its innovative and progressive green methods that were utilized to build a sustainable community. Following the most rigorous standards of excellence, LEI takes great pride in showcasing the Simpson Hill project and our other featured projects that have exceeded our clients' expectations and included cutting-edge green technology and engineering:

Shops at Bridgeport - Tualatin, Oregon

Bridgeport GrandLEI performed as the engineer-of-record and surveyor-of-record for a 4.86 acre commercial development in the Bridge Port Village complex in Tualatin, Oregon.  Development design included five structures, parking lots, pedestrian facilities and landscaping.  LEI worked closely with the project Architect to develop the site design for the site and administer the construction for the project.  
 
The City of Tualatin Stormwater Master Plan requirements were followed. LEI evaluated existing site drainage conditions and then designed a stormwater drainage system that provides the required water treatment, detention and conveyance for the entire site. 
 
LEI also provided erosion control and sedimentation control plans for permitting, grading plans, utility design and plans, and roadway plans.  This project was in coordination with the client involved the City of Tualatin, Oregon Department of Tranportation, Washington County and Cleanwater Services.  Following approval of plans by the City of Tualatin and issuance of building permits, LEI provided construction administration and construction surveying services for the project through final construction and as-built surveys. 

Hilton Garden Inn Hotel - Gateway Area in Springfield, Oregon

Hilton Garden InnLEI evaluated existing site drainage conditions and then designed a stormwater drainage system that provides the existing water treatment and conveyance for the entire site for the Oregon Department of Transportation Right-of-Way. The site is a 2.83 acre commercial development in the City of Springfield consisting of a hotel, parking lot, pedestrian facilities and landscaping.
 
LEI followed the City of Springfield Engineering Design Standards. The City of Portland Stormwater Management Manual (BES) governed water quality standards. Moreover, the water quality demand flows had to be treated before entering the public stormwater facilities. This required LEI to use both vegetated swales and water quality catch basins. The entire stormwater system for the site provided conveyance for at a minimum, the 25-year storm event.
 
LEI also developed erosion and sedimentation control plans for the project site. We also provided a stormwater drainage report, which consisted of runoff calculations, pipe sizing calculations, conceptual drawings and design drawings. LEI developed erosion control and sedimentation control plans for the 1200C DEQ permit.  In addition, we completed grading design, sanitary sewer design and waterline design along with approved building permits for construction.
 

Gravina Mill Access Road

Gravina Access RoadLEI completed the Gravina Mill Access Road project using DOT LiDAR, design surveying, environmental analysis, permitting, PS&E development, and construction administration for 3 miles of low-volume road re-alignment and improvements west of the Ketchikan International Airport.

LEI performed a detailed route survey of the road and structure site using a Trimble S6 Robotic Total Station to the specifications and standards provided by the DOT&PF. LEI survey crews produced over 2,000 feet of full preliminary line route survey per crew day. Primary reference and control was set along the alignment, and tied to geodetic control provided by DOT&PF. Survey crews surveyed property lines, easements, and Right-of-Way referenced to the route survey, as deemed necessary and appropriate by the research conducted by the LEI Land Surveyor and DOT&PF. Topographic data was collected at not more than a 50-foot spacing, but sufficient to adequately map terrain features and model the terrain for design.

Site surveys were conducted at all fish-bearing stream crossings and stream crossings with anticipated flows requiring a 48-inch diameter or larger pipe structure. For each site survey, LEI established control for the site tied to the control network for the route survey. Topographic data was collected on not greater than a 25-foot spacing, but sufficient to properly model the site conditions and terrain. Terrain features collected included stream thalweg, active channel width, top of bank, flood plain limits within the site, and terrain breaks within the site feature. Site surveys were also conducted at all locations requiring earth structures, such as retaining walls and large engineered fills. Streams requiring a backwater analysis had the cross sections located by a hydraulic engineer to ensure that proper modeling of the stream was achieved.


LEI used the data acquired to develop Plans, Specifications & Estimate (PS&E) output for each route/structure alternative for analysis and presentation in the Preliminary Engineering Report. The PS&E format followed DOT&PF design standards and guidelines, and met the objectives and requirements needed for the environmental analysis task in the project.

One of the Alaska DOT project management team members had the following to say about LEI’s approach on a recent project: “This project is becoming one of the most successful ‘new’ road alignments this department has ever been involved with. Your ability to field engineer the alignment is invaluable.” 

USDI Bureau of Land Management 5-Year Contract

Parker CreekLEI currently holds a five-year, $5 million, A/E IDIQ contract with the USDI Bureau of Land Management that is administered out of Portland, Oregon. LEI is the team lead for a five-firm multi-disciplinary team to complete a wide range of A/E projects that include architectural, design, land survey, condition assessment, construction administration and NEPA. A selection of task orders assigned LEI are as follows:
 
Coleman Creek Bridge Design: LEI completed the survey, design, and preliminary construction administration for the replacement design of a 12-foot dia culvert with a 60-foot span concrete bridge: Topographic survey, hydraulic analysis, structural design, civil design, construction document preparation, schedule of items and engineers estimate.
 
Bear Camp Road(Galice) EFRO Slide Repairs: LEI completed the survey, design, and construction administration of nine segments of the Bear Camp Forest Highway damaged by landslides. Funding for slide damage was through Western Federal Lands Highway Department EFRO funds: Topographic survey, geotechnical investigation and analysis, civil design, construction documents, engineers estimate, schedule of items and specifications.
 
Molalla/Quartzville Road Hazard Assessment:  LEI completed road hazard assessment on two forest highways approximately 40 miles in length: Centerline traverse survey, assessment of clear zone violations, determination of need for guard rails, design speed analysis and assessment of other safety features designated by AASTHO.
 
LEI also completed Marmot Dam existing bridge load rating and site condition assessment: Conditions assessment of the Marmot Dam recreation site for future development, load rating and re-decking assessment of large steel pedestrian bridge, analysis of existing shotcrete wall, topographic survey of planned new recreation site, preliminary assessment of vehicle traffic patterns and parking.