This street name must have changed since 2004? The treatment plant has an address of 500 Marginal Way. Link:http://data.rtknet.org/rmp/rmp.php?facility_id=100000161665&database=rmp&detail=3&datype=T
Entirely possible, this article says Douglas Street/Circle, but may have been on the other side of Congress:http://losttrottingparks.blogspot.com/2011/03/story-of-bill-wellman-trotter-injured.html?m=0
There was a surface parking lot for the hotel guests from where you see the rotary to Cumberland Avenue, valet service was the norm when they first opened this end of the hotel, (also moving the registration desk to this end) there was a multi-story brick garage with an auto elevator at...
On Saturday June 1st, they started taking down the suicide steps, but right away found an unexpected buried gas pipeline, so started taking down the concrete around the Center Street entrance instead.
The "suicide steps" at Center & Spring Streets is rubble in this photo. Soon after the CCCC opened these suicide steps earned their name by being too steep and not friendly to either crazed rock concert goers, or any other patron for that matter, as a result the steps were not used anymore...
I don't know if it has been mentioned already or not, but I have seen posts elsewhere that the old American Can building on Read Street is being torn down right now.