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cubic yards) Of municipal solid waste; relocating two steel lattice electrical transmission towers; actively communicating with impacted <br />u <br />communities; and responding to numerous environmental mitigation measures that must be implemented during design and construction. <br />d <br />IEL <br />s(! <br />• <br />I! <br />S ,T <br />I <br />domestic waterline. <br />�i <br />- The project included Installation of approximately 3,000 LF of sewer and domestic water line and constructioniextension of 22 cross culverts <br />r <br />beneath the future roadway and a substantial roadway storm drain infrastructure comprised of more than 15,000 linear feet of reinforced <br />_ <br />6F <br />iGa <br />drainage areas in orderto facilitate treatment of roadway Impervious surfaces. To meet Orange County criteria and NPDES requirements, a <br />LA PATA AVENUE GAP CLOSURE & CAMINO DEL RIO EXTENSIONI <br />total of six combined basins (to address water quality, hydromodification, and detention) were included in the project to address pollutants of <br />• <br />County,Orange ! (COMPLETED 2017)f <br />• <br />F Huitt-Zotlars prepared PS&E and right-of-way documents to close an <br />*,. <br />i <br />� <br />864,as and 681' <br />existing gap in Orange County's Master Plan of Arterial Highways <br />T/at(icStgnats , <br />• <br />Ortega Highway and the City of San Clemente. This 3.7 mile tong, $72 <br />' <br />Tra/fic ControNGohshuction Staging <br />a <` million project was comprised of critical elements that came together <br />' •UYdrology &;Hydraulics . <br />• <br />for the project's success: working within the Prima Desheche Landfill <br />• <br />Bilogo comp6terPiogran s <br />and designing controlled access to the landfill; widening an existing> <br />Oonstrdctfon $ppporf <br />• '' <br />section of roadway that most remain in operation to serve the landfill and <br />t <br />Utxty'Coordidation & Relocation <br />adjacent high school; and pioneering a new roadway through undeveloped, <br />mountainous terrain with final roadway grades up to 7%. Huitt-Zoliars <br />t <br />overcame multiple challenges associated with the following critical <br />alemants: moving 15 million cubic yards of earth; performing landslide <br />T j <br />remediation; mitigating effects of constructing the roadway through a <br />— <br />former landfill area and relocating more than one billion pounds (850K <br />cubic yards) Of municipal solid waste; relocating two steel lattice electrical transmission towers; actively communicating with impacted <br />V 1 <br />communities; and responding to numerous environmental mitigation measures that must be implemented during design and construction. <br />d <br />Challenges were also associated with constructing deep drainage culverts, storm drainage systems and water quality basins, two east in <br />• <br />place bridge overcrossing and five 30 -foot diameter steel multi -plate tunnel undercrossings. Installed approximately 3,000 LF of sewer and <br />w <br />domestic waterline. <br />,G <br />- The project included Installation of approximately 3,000 LF of sewer and domestic water line and constructioniextension of 22 cross culverts <br />r <br />beneath the future roadway and a substantial roadway storm drain infrastructure comprised of more than 15,000 linear feet of reinforced <br />_ <br />concrete pipe; ranging in size from 18 to 108 inches in diameter. The roadway storm drain infrastructure segregates roadway runoff fromoffsito <br />iGa <br />drainage areas in orderto facilitate treatment of roadway Impervious surfaces. To meet Orange County criteria and NPDES requirements, a <br />"t <br />total of six combined basins (to address water quality, hydromodification, and detention) were included in the project to address pollutants of <br />• <br />concern and meet LID requirements. Flood control requirements are met by providing additional peak flow detention storage (over ten acre- <br />• <br />feet) in these basins, <br />. r <br />RELEVANT DESIGN COMPONENTS:' <br />+ <br />Value Engineering <br />• <br />Landfill Engineering <br />• <br />Sewer and Damestie Water <br />+ <br />Pavement Rehabilitation & Overlay <br />• <br />Road Widening <br />Geotechnical <br />• <br />- Gap Closing, <br />• <br />Stara orain <br />• <br />RetainiagWalls <br />• <br />"Mioor.Structures <br />• <br />864,as and 681' <br />• <br />T/at(icStgnats , <br />• <br />beslgn, Geometries, PS&f' <br />Tra/fic ControNGohshuction Staging <br />• <br />' •UYdrology &;Hydraulics . <br />• <br />Signage & Striping <br />• <br />Bilogo comp6terPiogran s <br />• <br />Oonstrdctfon $ppporf <br />• '' <br />Right -of --Way <br />Utxty'Coordidation & Relocation <br />,F <br />t,gC9:IENT,CONTAr;�� T <br />rProject of The Year Award <br />Design Quality Partner Award for Projects $51 - $100 Million <br />62 on Roads and Bridges Magazine Top 10 Roads List <br />D.E.S.T. Award for a Regional Transportation Project <br />HUITEZOUARS Cityof Santa Ana Civil Engineering Services: RFP 17-083 10 <br />25E-280 <br />