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CONTACTINFO <br />JUSTIN GRIFFITHS, PE, CFM, QSD/QSP <br />justin.griffiths@nv5.com <br />Stormwater Engineer <br />EXPERIENCE................................................................................................................................................................................. <br />15 years <br />Mr. Griffiths' technical background includes steady and unsteady hydraulic <br />EDUCATION <br />modeling, encompassing one- and two-dimensional models; river mechanics; <br />B.S. Civil Engineering <br />scour analysis, revetment design, hydraulic analysis of bridges and other <br />REGISTRATIONS <br />structures, floodplain mapping, storm drain and energy dissipating structure <br />designs. Additionally, he is experienced in hydrologic modeling, flood routing, <br />Civil Engineer (CA) <br />No. 69994 <br />retention/detention basin design, hydromodification analysis, and erosion <br />control design. He assists project managers with a variety of water -related <br />Certified Floodplain <br />projects, including Storm Water Pollution Prevention Plans (SWPPPs), <br />Manager (CA) No. US-05- <br />Storm Water Management Plans (SWMPs), Water Quality Technical Reports, <br />01352 <br />drainage designs and report preparation. <br />Certified QSD/QSP- <br />Project Experience <br />No. 00717 - CASQA <br />................................................................................................................................................................................. <br />AVAILABILITY <br />Quarry Road Hydrology/Hydraulics and Alignment Study <br />40% <br />COUNTY OF SAN DIEGO I SAN DIEGO COUNTY, CA <br />Project Engineer. Mr. Griffith's was responsible for performing hydrologic, <br />hydraulic, and scour calculations for a proposed bridge and roadway <br />realignment over Spring Valley Creek at the Quarry Road crossing for the <br />San Diego County Department of Public Works. Hydrologic calculations <br />were performed according to the County of San Diego Hydrology Manual <br />requirements using HEC-HMS for the highly urbanized 11.6 square -mile <br />watershed. The 10-, 50-, 100-, and 500-year, 24-hour hydrographs were <br />computed for use in the subsequent hydraulic modeling. Hydraulic modeling <br />was performed using HEC-RAS and consisted of evaluating the existing <br />conditions to determine baseline hydraulic values. <br />Stone Canyon Creek LOMR <br />CITY OF POWAY I POWAY, CA <br />Project engineer responsible for performing hydrologic and hydraulic <br />calculations for Stone Canyon Creek within the City of Poway. Hydrologic <br />calculations were performed using HEC-HMS to generate inflow hydrographs <br />at various points of interest for use in the subsequent hydraulic modeling. The <br />hydraulic analyses consisted of modeling storm drains, culverts, Stone Canyon <br />Creek, and its tributary using XP-SWMM. Storm drains, culverts, and the <br />main channel of Stone Canyon Creek and its tributary were analyzed under <br />unsteady, one-dimensional flow assumptions. Shallow flow resulting from <br />culvert and storm drain overflow and Stone Canyon Creek overbank flow were <br />modeled in two -dimensions. <br />Thermal Sheriff Station WQMP <br />CITY OFTHERMALl THERMAL, CA <br />Project engineer for the preparation of a preliminary water quality management <br />plan for a new sheriff station. The WQMP documented site, source, and <br />treatment control best management practices (BMPs) that will be implemented <br />to prevent pollutants from entering stormwater conveyances and receiving <br />waters. The project proposes development of approximately 15 acres of a <br />V 5 currently undeveloped parcel that will also include a warehouse, aviation <br />facility, fuel station, wash area, parking, landscaped areas, and graded areas <br />for future development_ <br />