TETRA TECH, INC - Laserfiche WebLink

Home Browse Search

Dan Heft (PESR) that included all necessary analyses and a recommendation for regional stormwater capture treatment and implementation. The analysis identifies the existing site hydrology, water quality, and hyd ra0cs to determine an optimal combination of the inflow rate, storage volume, and outflow. The project consists of a gravity diversion from two separate Los Angeles County Flood Control Districtstorm drain lines; a'72" RCP line that drains 261 acres of the Los Cerritos Channel, and a:38' wide rectangular concrete channel that drains 2,995 acres of the LowerSah Gabriel River, Camp Roberts Perimeter Road, California Army National Guard, San MiguelrCA. Mr. Helt was responsible for overseeing topographic survey services for upgrades to approximately 17,1 miles of roadway alongthe Eastand West Perimeter Range Roads at Camp Roberts. The goal of the project update existing.roadways up; tornodern asphalt Standards, provide a safe, reliable and usable environment for soldier training and improve operability andmaintainability of roadways. The topographic survey was performed using both traditional ground and mobile LIDAR survey techniques. Templeton to Atascadero Connector, County of San Luis Obispo, Templeton, CA. Mr. Helt was responsible for overseeing topographic and right -of -Way survey services, and for coordinating with Union Pacific Railroad (UPRR) forsurveysite access. Tetra Tech designed a mufti- use pathway. The project involved extensive permiting, environmental reviews, right-of-way acquisition; construction documents and grant administration. The pathway networkprovided connectivity between Templeton and Atascadero; facilitating safe and attractive transportation between these two towns -and encouraging alternative transportation modes. Eimer Avenue phase II Project, City of Los Angeles, Bureau of Engineering, sun Valley, CA. As Project Ehgiheerand surveyor, Mr. Helt was responsible for field reconnaissance and design of this Proposition "Q"project. The Phase I project improvements consisted of two additional catch basins and hydrodynamic separators, and the regrading of an intersection. Through the incorporation of additional Low Impact Deyetopment infrastructure; the project increased infiltration; capacity; recharged to the groundwater supply; reduced polluted stormwater runoff and improved public safety. Athorough site investigation, topographic survey, and hydraulic calculations were performed for the entire Elmer Avenue watershed area. Tetra Tech worked closely with the Bureau of Engineering (BOE), the Watershed Council, and community residents through design workshops to create a final design within a very aggressive schedule and within budget. The final design included two new catch basins and storm drain piping that collects and conveys additional stormwaterto the infiltration galleries. Hydrodynamic separators were installed at each end of ElmerAvenue. These separators will collect and prevent sediment from entering the infiltration galleries. A pavement overlaywas provided atthe intersection of Stagg Street and FairAvenue to direct additional flow to the galleries. Tetra Tech also provided bid support and As -bid documents. FIRST STREET PEDESTRIAN IMPROVEMENTS PS&E RA''NO,'.104ui BS, Civil Engineering, California Polytechnic University, San Luis Obispo, 2003' Professional Engineer, California, No. C69347, 2OQ6 Professional Land Surveyor Ca6'fornin, No. 8925, 2012 YEARS OF EXPERIENCE RESUMES 2SK448