The problem, NP, is there are numerous sites like this. It is unbelievable to think DC doesn't have a comprehensive catalogue of these sites, along with vacant lots and buildings and schedules the maintenance accordingly. Instead of DPW having parking in its jurisdiction the agency should focus on the public works--household trash and recycling, grass, litter. Coordinating with the new Dept of General Services, DC should have no public space unkempt.
I am pleased to report that these areas were mowed this morning (4/20). This was about the same time I asked the neighborhood for help mowing ourselves tomorrow morning. I'll be working with the responsible agency (Department of General Services) to make sure this doesn't happen in subsequent years. @Real Name - Although these aren't official "parks", these open areas act as functional public spaces, which is why this was such a big deal. You can't lie and play on ground cover (or on tall grass).
NP