▁ins pection ▁b ays , ▁sh eds , ▁work sh ops , ▁and ▁st abling ▁lines ▁for ▁regular ▁maintenance ▁of ▁trains . ▁The ▁Sur at ▁dep ot ▁is ▁the ▁smallest ▁with ▁an ▁area ▁of ▁ 4 4 ▁hect ares . ▁It ▁contains ▁basic ▁facilities ▁for ▁train ▁maintenance . ▁ ▁All ▁dep ots ▁contain ▁res er voir s ▁for ▁rain ▁water ▁har vest ing ▁and ▁collected ▁water ▁is ▁passed ▁through ▁treatment ▁plants ▁within ▁the ▁dep ot ▁before ▁being ▁re - used ▁for ▁was hing ▁train sets . ▁Dep ots ▁also ▁have ▁re charge ▁p its ▁for ▁re charg ing ▁water ▁back ▁into ▁the ▁earth . ▁The ▁Th ane ▁and ▁Sur at ▁dep ots ▁are ▁also ▁capable ▁of ▁rec y cling ▁and ▁re - using ▁eff lu ent ▁and ▁se w age ▁water . ▁Bio - w aste ▁from ▁the ▁trains ▁is ▁stored ▁in ▁t anks ▁on board ▁and ▁removed ▁at ▁dep ots , ▁where ▁it ▁is ▁then ▁treated ▁in ▁se w age ▁treatment ▁plants . ▁ ▁St ations ▁ ▁| } ▁ ▁The ▁line ▁will ▁have ▁ 1 2 ▁stations . ▁Pro posed ▁stations ▁are ▁M umb ai , ▁Th ane , ▁Vir ar , ▁Bo is ar , ▁V api , ▁Bil im ora , ▁Sur at , ▁B har uch , ▁V ad od ara , ▁An and / N adi ad , ▁ ▁Ah med abad ▁and ▁Sab arm ati . ▁High ▁speed ▁rail ▁stations ▁will ▁be ▁constructed ▁either ▁above ▁or ▁next ▁to ▁existing ▁railway ▁stations ▁to ▁provide ▁transfer ▁with ▁the