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INITIAL STUDY/MITIGATED NEGATIVE DECLARATION <br />MAY 2020 <br />FAIRVIEw BRIDGE REPLACEMENT AND STREET IMPROVEMENTS w <br />(JTH STREET TO 16TH STREET) PROJECT `J" <br />SANTA ANAL CALIFORNIA <br />HSA <br />Hydrologic Subarea <br />HU <br />Hydrologic Unit <br />ICU <br />intersection capacity utilization <br />in/sec <br />inches per second <br />ISA <br />Initial Site Assessment <br />IS/MND <br />Initial Study/Mitigated Negative Declaration <br />LACM <br />Natural History Museum of Los Angeles County <br />Ibs/day <br />pounds per day <br />LED <br />light -emitting diode <br />Ldn <br />day -night average noise level <br />Leq <br />equivalent continuous sound level <br />LID <br />Low Impact Development <br />Lmax <br />maximum instantaneous noise level <br />LOS <br />level of service <br />LR-7 <br />Low -Density Residential <br />mi <br />mile/miles <br />MILD <br />Most Likely Descendant <br />MPAH <br />Master Plan of Arterial Highways <br />mph <br />miles per hour <br />MRZ <br />Mineral Resource Zone <br />MT <br />metric ton <br />N20 <br />nitrous oxide <br />NAAQS <br />National Ambient Air Quality Standards <br />NAC <br />Noise Abatement Criteria <br />NADIR <br />Noise Abatement Decision Report <br />NAHC <br />Native American Heritage Commission <br />NALMA <br />North American Land Mammal Age <br />NB <br />noise barrier <br />NCCP <br />Natural Community Conservation Plan <br />NEPA <br />National Environmental Policy Act <br />NES <br />Natural Environment Study <br />R:\WKE1702\ISMND\Final ISMND\Fairview Street Bridge Final ISMND.docx (05/26/20) v <br />