i'm wyman lee and i'm a resident engineer for chinatown station. today i am presenting contract modification 123 to construct chinatown station plaza for your approval. central subway, phase two, we are constructing four stations. one surface station at fourth and branno inning, one at mosconi, another at union square and and my most prized at chinatown. our timeline, substantial completion for the tail-end of june of 2020. for the rose station, the original station has the residenrendering, and i consista surface level as well as roof. we want that to be incorporated into the construction contract. as can see from the rendering below, there's another story, another level that's going to be constructed above the surface. we'll end up with the ground level, the plaza level, as well as the roof when everything is done. and the next slide, is shows the magnitude of the construction that's being performed at chinatown. there are six levels constructed underground, along stockton street and three levels that have the cavern of about 1,000 feet, where tr