Drainage Design, Low Impact Development, BMPS Projects

Categories: Drainage Design, Low Impact Development, BMPS Projects

Date of completion: 2015

This project involved three main sections of sewer maintained by the Tahoe City Public Utility District in the Alpine Peaks area of the west shore were in need of repair and replacement. The high altitude, steep terrain, and depth of existing lines made this project challenging, but interesting. AEC was able to provide background investigation, surveys, civil engineering design, and construction phase services for this project. Approval processing, funding support, and bid phase services were also provided for the Client.

Date of completion: Fall 2012

This Lake Tahoe Environmental Improvement Project on U.S. Forest Service Land involved construction of a 6-bus inter-modal transit facility, 131-space parking lot, relocation of 450 feet of recreation access road, relocation and extension of 1,600 LF of multi-purpose recreational trails, and all storm drainage and water quality treatment systems. Roadway and drainage improvements to State Route 89 were required for left turn channelization and highway intersection improvements for the relocated recreation access road. The project design incorporated low-impact design principles, extensive use of permeable pavements and advanced stormwater management systems.

Date of completion: Fall 2012

AEC prepared a BMP work plan to improve/restore function of existing drainage, treatment and disposal systems as well as design additional facilities/treatment including drip line trenches, curbs, snow storage area, including revegetation and mulching. Review and evaluation of previous construction plans, and existing digital mapping resources were utilized to streamline this project and minimize costs.

Date of completion: 2010

Project Description: The United States Forest Service (USFS) contracted with AEC to provide design services for this reconstruction and retrofit project. The Project included redesigning the day use area to maximize efficiency of the paved surfaces for parking, to increase the number of parking stalls to 160, and to provide BMP’s for the site located in sandy soils very close to shoreline of Lake Tahoe. The site consists of three individual, interconnected parking lots, each of which was graded to allow the stormwater runoff to sheet flow to large central landscape island.

Date of completion: 2013

The project included the redevelopment of an existing lakefront residence in Carnelian Bay. Close coordination with the North Tahoe Fire Protection District, the Agate Bay Water Company, and utility providers in order to achieve compliance with fire flows, connections, and the necessary utility relocations were required for this technically challenging project.

Date of completion: Fall 2012

The wetland mitigation project represents a collaboration between the North Tahoe Fire Protection District (NTFPD) for impacts associated with their new fire station, and the Tahoe City Public Utility District (TCPUD) for impacts associated with the Lakeside Trail. AEC identified a joint project that would address feasible and appropriate mitigation needs for both sets of impacts. The Station 51 original relocation project included site work for a 20,000 square foot public safety center including roadway improvements to Fairway Drive, parking, new utilities and utility relocations, and a storm water collection and treatment system. The Lakeside Trail is the final one-mile segment in the largest paved trail system at Lake Tahoe connecting the existing multi-purpose trails through a highly constrained urban core of Tahoe City, along the lake shore. The purpose of this project was to mitigate the permanent and temporary impacts to existing wetlands. The project area that was selected meets the criteria set forth by current U.S. Army Corps of Engineers Final Mitigation Guidelines and Monitoring Requirements, and as mandated by the Water Quality Certification Permits (401 Permits) issued for both the NTFPD and TCPUD projects. The mitigation project is currently being monitored annually by AEC and its biological subconsultants.

Date of completion: Winter 2011

The Zephyr Lodge is a 14,000 square foot ski-in, ski-out restaurant lodge located at the top of the Tahoe Zephyr Lift with views off the backside of Northstar. The lodge opened in December of 2011 and is LEED certified. AEC was contracted to provide civil engineering, surveying, SWPPP monitoring, and LEED Certification for the project.

The Clear Capital Airport Building is a 12,840 square foot modern steel office structure built within Truckee-Tahoe Airport property. The project includes a reconfiguration of the existing airport long-term parking area, circulation and access improvements, storm drainage and water quality treatments, sidewalks, and roadway improvements. AEC provided civil design level services as well as CEQA and FEMA support.

Date of completion: 2012

Prepare BMP work plan to comply with TRPA’s request to come into compliance with TRPA requirements regarding onsite water quality treatment and BMP installation.

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