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Christopher Riehle, PLS I Psomas <br />Survey <br />REGISTRATION <br />2018/Professional Land <br />Surveyor/CA #9453 <br />EDUCATION <br />2002/BS/Geography, GIS <br />Minor/California State <br />Polytechnic University, <br />Pomona <br />Christopher Riehle has 17 years of experience in a wide array of survey <br />and mapping disciplines. These disciplines include ALTA/NSPS Land Title <br />Surveys, boundary analysis, topographic mapping, preparation and review <br />of parcel maps, final maps and Records of Survey, lot line adjustments, <br />legal description preparation, analysis and mapping of rights -of -way and <br />easements, and extensive GPS post -processing and geodetic control <br />network establishment throughout California and Nevada. <br />Project Experience <br />Peck and Chestnut Street Sanitary Sewer Replacement Project, <br />Lake Elsinore, CA: QA/QC Manager for preparation of plans and <br />specifications to replace approximately 2,500 LF of 6-inch sewer main <br />with 8-inch sewer main. An additional 1,000 LF of existing 6-inch sewer <br />will be re -lined since there are issues with construction access in the <br />10-foot alleys east of Main Street. One pipe segment is on a private <br />residence where we propose pipe bursting to mitigate impacts to the <br />owner's garage and property. <br />Orange County Fair and Event Center, Costa Mesa, CA: Project <br />Surveyor in support of the California Construction Authority authorized to <br />do a topographic survey of the entire 150-acre OC Fair & Events Center <br />property in Costa Mesa. Project management included establishment <br />of project survey control using a combination of GPS and conventional <br />survey methods and oversight of topographic survey of the complete <br />site consisting of compilation of aerial mapping and design -level ground <br />survey. Design -level topographic survey included detailed data collection <br />of all light towers, wires, cables, and surface -visible indications of utilities <br />above and below ground, including, but not limited to, manholes, catch <br />basins, valves, vaults, and indications of electrical, sewer, phone, and <br />other subterranean uses. Topographic survey also included quantities <br />and types of parking spaces on surface parking areas in the site. Aerial <br />mapping collected all visible features for roadway, utilities, and cultural <br />items in support of the conventional ground survey. DTM breaklines and <br />mass points supplemented select planimetric features for triangulation of <br />a surface model and, ultimately, the creation of the 1-foot contours for the <br />entire site. <br />On -Call Surveying Services, Orange County Sanitation District, <br />Orange County, CA: Survey Task Manager for this on -call project which <br />consisted of conducting topographic surveys to assess the stability of <br />the pipeline and manholes along the subject Santa Ana River Interceptor <br />(SARI) line segment. Field surveying for each monitoring survey at <br />critical locations was used to assess the current pipe depth and compare <br />changes in the pipe depth with previous reports. The work included <br />taking survey cross sections and profiles of the SARI line and the Santa <br />Ana River bed at various locations. <br />c„y of saai, nr'l RrP N,, 19 101) PSOMAS <br />