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CCNTACTINFa
<br />JUSTIN GRIFFITHS, PE
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<br />fl49.596.C4'77
<br />WateVftstewaltar Engineer
<br />EXPERIENCE
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<br />Mr. Griffithatechnloal background Includes steady and unsteady hydraulic modeling,
<br />15 years
<br />encompassing one- and two-dlmenslonal models; river mechanics; scour analysis,
<br />EDUCATION
<br />revetment design, hydraulic analysis of bridges and other structures, floodplaln mapping,
<br />ES Civil engineering-
<br />California Polytechnic
<br />storm drain and energy dissipating structure designs, Additionally, he is experienced in
<br />hydrologic modeling, flood routing, retention/detention basin design, hydromodification
<br />State University -San We
<br />analysis, and erosion control design. He assists project managers with a variety of water -
<br />Obispo
<br />related projects Including Storm Water Pollution Prevention Plans (SWPPPsb Storm
<br />water Management
<br />LICENSES
<br />Plans (RIWMPs), Water QV914 Technical Reports, drainage designs
<br />and report preparation, He has performed site inspections to monitor Best Management
<br />ProfessionoIEngine.ar - CA
<br />Practices(BMPs).
<br />#69994
<br />Carkiflsd floodplaln
<br />Project EXperlon.Co
<br />Manager- CA #US,05-
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<br />O B2
<br />Quarry Road Hydrology/Hydraulics and Alignment Study I County of San Diego
<br />Certified QSD/QSP-
<br />Project engineer responsifyla for performing hydrologic, hydraulic, and scour
<br />#00717- CASQA
<br />calculations for a proposed bridge and roadway realignment over Spring Valley
<br />Creek at the Quarry Road crossing for the San Diego County department of Public
<br />Works. Hydrologic calculations were performed according to the County of San. Diego
<br />Hydrology Manual requirements using, HEC-HMS for the highly urbanized 116 square -
<br />mile watershed, The 10-, 50-,100-, and 500-year, 24-hour hydrographs were computed
<br />for use in the subsequent hydraulic modeling, Hydraulic modeling was performed using
<br />HEC-RAS and consisted of evaluating the existing conditions to determine baseline.
<br />hydraulio values. Various roadway alignments, bridge geometries, and channel grading.
<br />options were modeled and evaluated using HEC-RAS to determine the optimum
<br />configuration which met the County's design objectives.
<br />Stone Canyon Crook LOMR ( City of Poway
<br />Project engineer responsible for performing hydrologic and hydraulic calculations for
<br />Stone Canyon Creek within the City of Poway. Hydrologic calculations were performed
<br />using HEGHMS to generate inflow hydregraphs at various points of interest for use
<br />in the subsequent hydraulic modeling. The hydraulic analyses consisted of rnodeling
<br />storm drains, culverts, Stone Canyon Creek, and its tributary using XP-SWMM, Storm
<br />drains, culverts, and the main channel of Stone Canyon Creek and its tributary were
<br />analyzed under unsteady, line-dlmensionai flow assumptions. Shallow flow resulting
<br />from culvert and storm draln overflow and Stone Canyon Creek overbank flow were
<br />modoled In two -dimensions.
<br />Camarillo Center Hydrologic/Hydraulics Study I California Conservation
<br />Corps
<br />Project engineer who assisted in performing hydrologic and hydraulic analyses to
<br />evaluate various flood control mitlgation alternatives for the existing facilities at. the
<br />Callfornla Conservation Corps' (CCC) Camarillo Center in Ventura County, California.
<br />In March 2011, the Camarillo Center experienced a rain event that generated
<br />approximately 5-6 inches of precipitation. The off•site drainage conditions created
<br />significant flooding issues as off -site drainage ditches lacked adequate capacity for
<br />this large event. The hydrologic and hydraulic portions of the study evaluated various
<br />storm events, including the 1C0 year, 24-hour storm.
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