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CONTACT INM <br />JUSTIN GRIFFITHSt PE <br />949.680.0477 <br />Water/Wastewater Engineer <br />. . ........ <br />EXPERIENCE <br />.. ............ ­.f� ..... . ............ .......... ................. . <br />Mr. Griffiths technical beftrou no Includes Steady and unsteady hydraulic Modeling, <br />is years <br />encompassing One- and two-dimensional models; river mechanft scour arialysis, <br />EDUCATION <br />rovatment design, hydraulic analysis of bridges and other structures, floodplaln mapping, <br />66 Civil Englaearing- <br />storm drain and energy dissipating structurbAesigns.Additionally, hais experienced in <br />.California polytechnic <br />hkorologic modeling, flood routing, ratonfloWdetentiou basin design, hydromadification <br />State University -San Luis <br />analysis, slid erosion -control design'. He assls% Pirojectmanagers with avarialy of water - <br />Obispo, <br />related projects Including Storm Water Pollution Prevention Plans (swpppa), Storm <br />Water management Plans 0WRIPsh Water QualityToohnical Reports, drainage designs <br />LICENSES <br />end report preparation, He has parl'oftned site Inspections to monitor Best Management <br />Professional Engineer - CA <br />Praotices (ampi). <br />4169094 <br />Cortified M94plaln <br />Project Experience <br />Manager- CA#US-O& <br />... .. ......... ........ ... ........ ! ... a ..... 1. ... . ......... . ..... . . . ............ ... . ... . ...... a ........... . <br />01362 <br />Quarry Road HydrolOWHYdratilles and Allignmerd Sft* 1 Coulftly of San Diego <br />Conflied Q$D/QSP - <br />Project engineer responsible for performing hydrolagici hydre ulle, and scour <br />#()071�7 - CASQA <br />-calculations for a proposed bridge and roadway realignmert over Spring Valley <br />Crack at the Quarry Road dros$Ingfor the Son Diego County Departmentof Public <br />Works. Hydrologic calculations were performed a6dording to the County of San, Diego <br />Hydrology Manual requirements using HEC-H M Sforft highly urbaniz ad i:L6squsre­ <br />mile watershed. The 10-, $0-, IQG-, and SODWife, 24�hour hydrographs were computed <br />far use In the subsOquorrt hydraulic modeling. Hydraulic modeling was performed, using <br />HMRAS and consisted of evaluating the existing condittons to determine baseline <br />hydrauflo vaiues� Various roadway alignments, bridge geometries, and channelgrading. <br />options Were madeled and evaluated using REC-RAS to determine the optimum <br />configuration which met the CountYs design objectives. <br />Stone Canyon Creek LOMR I City of Poway <br />Project enghnser responsible for performing hydrologic and hydraulic calculaflons foe <br />Stone Canyon Creek wlthlh the City of Poway. Hydrologic calculations were performed <br />using HECHMS to generate Inflow hydrograph"t various p6ints.of interest for Use <br />In the subsequent hydraulic modeling, The hydraulic analyses consisted of modeling <br />storm drains, culverts, Stem Canyon Creek, and its t6botary using)(P-SWMM. Storm <br />drains, culverts, and the Main channel of Stone Canyon Creek and its tributary were <br />analyzed under unsteady, bhodimanalonal flow assumptions. Shallow flow resulting <br />from culvert and storm drain overflow and Stone Canyon Creek overbank flow were <br />modeled In two-dimenalons. <br />Camarillo Center Hydrolloglo/Hydraulics Study I California Conservation <br />Came <br />Project engineer who assisted In performing hydrologic and hydraulic analyses to <br />evaluate various flood ofontrol mitigation alternatives for the existing faollitleset the <br />California Conservation Corps' (CCC) Camarillo Oenter in Venture County, Calbrnla, <br />In March 2011, the Camarillo Center experienced a rain eventthat generated <br />approximately 6-6 inches of precipitation. The off -site drainage conditions created <br />I V <br />significant flooding issues as off-81te drainage ditches lacked adequate capacity for <br />this large event. The hydrologic end hydraulic portions of the study evaluated various <br />storm events, Including the100-yes4 24-hour storm. <br />25E-546 <br />