Lodestone Engineering LLC provides the following engineering related services, including preliminary designs and development of plans, specifications, and engineer’s estimates where applicable:
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Projects listed below represent the personal experience of the Lodestone Engineering LLC staff.
Regional Stormwater Facility - City of Lacey, WA
College Ditch is a conveyance route that carries stormwater runoff from central Lacey into Woodland Creek, a tributary of Henderson Inlet on Puget Sound and Lacey’s main drainage path. The overall College Regional Stormwater Facility drainage basin encompasses about 1,000 acres, of which approximately 420 acres is located south of the I-5 corridor and is the tributary area draining to this project site. Stormwater runoff from this area formerly flowed untreated via storm sewer pipes to a culvert under I-5, then along College Ditch into Woodland Creek. This stormwater runoff was a primary source of pollutants and erosion affecting the creek.
The project included the design of a stormwater facility to control runoff flows and minimize pollutant loads and soil erosion in College Ditch and Woodland Creek. The PS&E for the stormwater facilities construction improved both the runoff water quality and controlled discharge flows within the area. The facilities include stormwater treatment/control ponds, reconfiguration and construction of piping, and connections to existing infrastructure.
The project, sponsored by the City of Lacey in cooperation with Saint Martin’s Abbey, is located on the campus of Saint Martin’s University in Lacey. Other elements of the project included construction management which involved construction monitoring and contract administration for the construction of 3 large stormwater treatment ponds and associated storm sewers and stormwater monitoring.
College Regional Stormwater Facility received two awards:
2009 ACEC Award for Engineering Excellence
2010 APWA Project of the Year: Environmental; Less than $5M.
East Bay Infrastructure - Port of Olympia, WA
This project involved the redevelopment of a MTCA site to create five city blocks for mixed use in downtown Olympia. The project included new roadways and roadway widening to current City of Olympia standards. These standards included the addition of bike lanes, curb and gutter, on-street parking, and bulb outs at intersections and mid-block locations for traffic calming. A larger intersection was designed where a new roadway intersected existing roadways to accommodate large truck traffic entering and exiting the Port facilities.
Stormwater design consisted of a new collection and conveyance system as well as a large treatment facility which was connected to the existing outfall into Puget Sound. The water, reclaimed water, and sanitary sewer systems were replaced or extended throughout the project to City of Olympia standards.
The project included public involvement and outreach to coordinate traffic calming features in an adjacent neighborhood affected by the project. Major tasks included sponsoring an open house to receive input from the neighborhood, coordinating with the City and Port on the design and approval, and continued communication with the community to keep them informed of project progress.
Crown Park Stormwater Drainage & Sanitary Sewer Improvements - City of Port Angeles, WA
This project involved the design of a new alignment for approximately 3,500 feet of sanitary sewer pipe and 450 feet of stormwater pipe. A sanitary sewer pump station was decommissioned & abandoned and the sewer main was rerouted through a tidal lagoon which followed a concrete water main supported on piles. The project also included installing a pig port and cleaning approximately 4,000 feet of 12-inch sewer force main.
A new stormwater outfall was developed to reduce erosion on a steep hillside and to abandon a combined sewer overflow that discharged into the Straits of Juan de Fuca. This storm drainage system included an additional treatment facility and an energy dissipater to prevent erosion at the bottom of the steep slope located adjacent to the tidal lagoon.
Construction documents were prepared to City of Port Angeles standards.
SR3/SR303 Interchange Stormwater Improvements - WSDOT
This project included hydraulic analysis and design for stormwater features related to the WSDOT SR3/SR303 Interchange project in Silverdale, Washington. Stormwater design, from the hydraulics report to the final PS&E, included stormwater treatment, detention, flow control, and an enclosed conveyance system consisting of catch basins and pipes.
Stormwater treatment facilities were designed to treat runoff from impervious surfaces created by a 35 acre off-site development as well as the interchange improvements. Three wet ponds were used for primary treatment and detention; one designed to hold 50 acre-feet of water. This area discharges to a stream which flows through downtown Silverdale and regularly floods. The release rate for this drainage basin in pre-existing conditions was lower than the acceptable limits imposed by the Department of Ecology. This release rate was maintained for the post design conditions with the purpose of not exacerbating flooding in the stream.
This project required close coordination with the WSDOT design team.
Whittle Creek Bridge - Cowlitz County, WA
This project involved the replacement of a double box culvert with a modular bridge on West Side Highway. The roadway was raised approximately four feet to alleviate flooding at the creek crossing. Project features included the design of a 20 foot bridge span, a temporary detour road across the creek, and guardrails. The new bridge was designed to meet the State of Washington Bridge Rehabilitation Construction (BRAC) funding requirements. The construction PS&E documents were prepared to Cowlitz County standards.
Chumstick Creek Culvert Replacements - Chelan County, WA
This project included removal and/or replacement of 17 culverts on Chumstick Creek. These culverts were identified as fish passage barriers by the Chelan County Natural Resources Department (CCNRD). Designs were prepared for new creek crossings which incorporated requirements in BPA’s Habitat Improvement Place Biological Opinion (HIP BO II). The replaced creek crossings were simple span bridges which opened the flow area for Chumstick Creek. Negotiations were conducted with private land owners in combining driveways and allowing access on private land in order to construct these bridges. One bridge was located on a county roadway which required a design to county standards including new guardrail.
This project received the 2010 ACEC Silver Award for Complexity.
Tumwater Boulevard Reconstruction - City of Tumwater, WA
The City of Tumwater wanted to improve this two and three lane roadway to a four lane boulevard with a roundabout to create an inviting access to the Town Center. The Port of Olympia, owner of the land abutting the roadway, wanted a commercial street, suitable for business and the free movement of freight.
The challenge was to design a roundabout that was accessible and easily maneuverable by trucks without sacrificing the benefits of continuous flow. The roundabout was designed with a larger diameter to serve commercial traffic, and the approaches were designed with geometric features to maintain slower speeds for passenger cars. The design stood up to review and critique by some of the most experienced roundabout designers in the country.
This project has been built and both the City and the Port feel that they came out a winner. When constructed, this project widened the roadway between Capitol Boulevard and I-5, provided additional lanes for vehicles and bicycles, created multiple bus pullouts, and incorporated a two lane roundabout. Additional project features included decorative sidewalks, mid-block crossings with in-pavement lighting, illumination, landscaping, extensive water and sewer improvements, an upgraded signal at Capitol Boulevard and a new signal at Linderson Way/Center Street.
Camano Hill Road - Island County, WA
This project involved the improvement of 3.5 miles of county roadway by designing safety improvements including added turn lanes, realigning horizontal and vertical curves, roadway widening and gravity retaining walls. The project included the reconfiguration of three intersections and the addition of one new traffic signal.
Due to the terrain along Camano Hill Road, sheet flow dispersion was used as stormwater treatment for most of the roadway. Rock pads were designed to discharge concentrated flows at the end of cut sections. At the beginning and end of the project, two swales were designed to treat the stormwater before discharge.
Ocean Beach and Middle Satsop Roads - Grays Harbor County, WA
A Preliminary Design and PS&E for safety improvements on these rural county roads were provided for this project. The improvements consisted of a new horizontal and vertical alignment to improve sigh distance and the replacement of culverts.
Bolstad Avenue - City of Long Beach, WA
This project involved the improvement of two city blocks with lane widening and sidewalk replacement for added pedestrian safety. The stormwater system was upgraded to accommodate larger storm events. The sidewalk replacement was challenging because it abutted existing buildings and required widening to current ADA standards. Final PS&E was prepared for this project.
Peabody Creek Water - Port Angeles, WA
This project consisted of the replacement of 3,200 feet of aging water line, ranging in size from 8 to 30 inch diameter pipe. Major project features included: working within the Olympic National Park, working in busy city streets, heavy traffic loads, stream crossing, and construction sequencing to minimize disruption of water service. Final PS&E was prepared to City of Port Angeles standards.
Yelm Avenue West/Killion Road - City of Yelm, WA
This project involved upgrading approximately 3,000 feet of Killion Road from a two lane roadway to a three lane roadway, improved approximately 3,700 feet of Yelm Avenue W/SR510 from a two lane road to a three lane roadway. To the south of Yelm Avenue W, Tahoma Boulevard was extended 1500 feet to connect to a new five lane roadway. All three segments of the road included new sidewalks and upgrades to the water, sanitary sewer, and stormwater systems. A new traffic signal was added at the intersection of Killion Road and Yelm Avenue W. The project was designed and constructed in two phases. Each phase required coordination with the City and WSDOT for intersection plans for approval for three intersections.
East Valley Road Settlement Repair - Wahkiakum County, WA
This project included developing two alternates to address the cause of and repair of settlement on a rural road. The road is adjacent to Wilson Creek to the south and a seasonal stream to the north. It was determined through a geotechnical consultant that the settlement was caused by saturation of unsuitable materials in the roadway fill. The two alternates addressed replacing the unsuitable material in the roadway bed, repairing the road and lowering two culverts that had outfalls set too high which caused erosion of the steep bank towards Wilson Creek. One alternate further addressed the drainage issue by lowering the seasonal stream to capture more stormwater before it entered the roadway. The second alternate placed rock galleries to the north side of the road and conveyed the stormwater to a culvert crossing. A hydraulic report and design for the 90% PS&E began once an alternate was chosen.
Forest Home Road Slide Repair - City of Camas, WA
This project included design for the excavation, drainage and slope stabilization for a slide. Major project features included the removal of slide material, a stormwater system, and slope stabilization with a rock buttress and rock facing. Construction documents were prepared to City of Camas standards.
County Wide Guardrail Improvements - Wahkiakum County, WA
This project included the PS&E and construction management for guardrail improvements throughout Wahkiakum County, including Puget Island. Mapping was received from the County and the County roadway system was driven to determine and prioritize areas needing guardrails. Each guardrail site was evaluated, then the guardrail length of need, post lengths, and terminal types were determined and final construction documents prepared. Contract administration was provided as well as assistance to the County with contractor dispute resolution.
Milton Way Sidewalk Improvements - City of Milton, WA
A successful TIB grant application was prepared for a sidewalk project on Milton Way between 11th Avenue and 5th Avenue. The project also consisted of curb and gutter, a meandering pedestrian path through a city park and stormwater improvements.
Stormwater Pond and Flooding Relief - City of Milton, WA
A grant application was prepared for a stormwater project involving redirecting water to a pond, increasing the pond capacity and providing treatment to the water before its release into a Class I wetland. The project was awarded a low-interest loan by the Department of Ecology Water Quality Grant Program.