Mt Vr Charls tati Pttial Vility Assssmt Dcmbr, 7 Chsapak Csrvacy Aaplis, MD
Mthdlgy Bst Availabl Data Lidar pit clds rprst th bst availabl lvati data i Charls ad Pric Grg s Ctis. Ths datasts ctai millis f pits that icld a latitd, lgitd, ad lvati ad ca b prcssd it a mbr f high-rslti, high-accracy drivativ datasts, icldig a bar-arth digital lvati mdl (DM), rprstig th lvati with all atral ad athrpgic fatrs rmvd, ad a first-rtr digital srfac mdl (DM), rprstig th tps f trs ad bildigs as wll as p grd. Th ara ard th prpsd prjct has lidar data availabl that was cllctd i witr. Lidar data taks it acct small chags i tpgraphy, as wll as atral ad ma-mad fatrs, which ca hav dramatic impacts vility. Additially, bcas this data was flw i witr, it prvids a laf-ff datast, which will shw a mr csrvativ tr capy ad cld b csidrd maximm vility cditis. Whil it is likly that thr will b cditis icrasig th vility f th prpsd strctr, vility ca b xpctd t b rdcd drig thr sass whr tr capy plays a largr rl i scrig th prpsd cmprssr stati frm Mt Vr. Usig this lvati data allws fr th crati f m rslti datasts that rflct th actal hights f trs ad bildigs, as ppsd t stimatd hights, prvidig a mr rprstativ lvati mdl. Tchical Mthdlgy I prparati fr th aalysis, tw layrs wr cratd frm th lidar lvati data, a digital lvati mdl (DM), rprstig bar-arth cditis, ad a digital srfac mdl (DM), rprstig th maximm lvati f fatrs th grd, sig sri s ArcGI swar. DM - T crat th DM, a classifid Lidar pit cld was filtrd t ly icld grd pits, which xclds all pits classifid as vgtati, bildigs, watr, bridg dcks, r pwr lis as wll as classifid pits. Th rmaiig pits wr cvrtd it a -mtr rslti rastr lvati srfac with th lvati drivd frm th ma val f all Lidar pits withi ach pixl. DM T crat th DM, all pits i th Lidar pit cld wr sd t crat a - mtr rslti rastr lvati srfac. lvati vals wr drivd frm th maximm lvati val i ach pixl. Th vility f th prpsd cmprssr stati was assssd sig sri s Vility tl lvragig th DM srfac with a bsrvr lcatis st t a sris f twty-tw pits th prprty f Mt Vr, with a lvati st at abv grd lvl. lvatis withi th parcls wd by Dmii aticipatd t b clard wr st t th DM t mdl th vgtati clarig that wld ccr drig cstrcti (Figr ). Th cmprssr stati s lcati ad ara t b clard wr had digitizd basd a cpy f th sit pla, which was grfrcd t th lcati ad matchd t twlv pits thrght th map ara.
Figr : Prpsd Bildig it lcati, icldig th apprximat sit dsig f th cmprssr stati Aras whr a tall idividal wld hav a bstrctd viw t th parcls ctaiig th cmprssr stati wr slctd by idtifyig aras that ar csidrd vl i th aalysis. T assss th pttial vility f a strctr, th diffrc btw th sm f th DM ad abv grd layr (AGL), a tpt f th vility aalysis idicatig th additial hight that wld b rqird fr a srfac t b vl, ad th bar-arth DM was calclatd. This rprsts th hight a bildig wld hav t b t b csidrd vl frm Mt Vr. This aalysis was cmpltd bth a DM ad DM srfac t drstad diffrcs i vility basd tr scrig vrss tpgraphic scrig. Csidratis ad Limitatis O f th largst csidratis that mst b tak it acct is that th lidar data was cllctd i ad thr is th pttial fr trs t hav grw r b ct dw, ad sm ladscaps may hav b clard ad dvlpd. All f ths vts cld hav a impact th vility f th prpsd stati ad this aalysis shld b csidrd a bst rprstati f aticipatd impacts.
Fidigs It was dtrmid that clarig th bildig sit ad cstrcti f th prpsd strctr wld t rslt i dirct vility f th cmprssr stati frm ay f th viwr lcatis at Mt Vr (Figr ad Attachmt A). Additially, it is likly that clarig th bildig sit itslf wld impact th viwshd frm Mt Vr d t th drlyig tpgraphy btw th bildig sit ad Mt Vr as wll as th prtctd stats f mch f th ladscap btw Mt Vr ad th prpsd sit (Attachmt B). Figr : Vility f th prpsd sit frm Mt Vr sig a DM srfac Th prpsd cstrcti sit is lcatd bhid a larg blff that wld bscr a 7-8 tall bildig v if all f th trs th ladscap wr rmvd. (Figr 3 ad Attachmt C). Figr 3: Bildig hight that wld b dd t b vl basd a DM vility aalysis ( trs th ladscap)
With th xistig tr capy, a strctr wld d t b vr tall t b vl aywhr i th ara that has b prpsd t b clard ad vr tall at th prpsd cstrcti sit (Figr ad Attachmt D). Csqtly, th rmval f trs withi th prpsd ara t b clard r th cstrcti f th cmprssr stati will likly t rslt i ay chag i th viwshd frm Mt Vr. Figr : Bildig hight that wld b dd t b vl basd a DM vility aalysis (trs ad xistig strctrs tak it acct) Hwvr, it shld b td that th parcls t th wst f th primary parcl ar t scrd by th blff ad ar vl i th crrt cditis ad ay cstrcti ths sits wld hav a highr liklihd f big vl. Additially, smk, stam, r atral gas flars might b vl dpdig thir hight ad pratig cditis at th cmprssr stati.
x isti gc d iti sv ility N tv l Attachmt A V l M tv r V i w rp i ts. M il s G y,m icr s, C N /A irb sd
Attachmt B l va ti ( ) l va ti fr m M tv r tp r p s dc m p r ss rta ti, 8, D ista c( ), 6,
H ig h tr q ir dtb V l (b a s d D M ) < 8-9 - 3-6 9-3 - 6-7 - - 7-8 -. Attachmt C > M il s G y,m icr s, C N /A irb sd
H ig h tr q ir dtb V l (b a s d D M ) < 8-9 - 3-6 9-3 - 6-7 - - 7-8 -. Attachmt D > M il s G y,m icr s, C N /A irb sd