Our soccer club is looking for a landscape company to aerate/seed, improve our playing fields located at Edgely in Fairmount Park.
Answer
Because the land you mentioned is on or near Parks and Recreation land managed by the City, you would have to inquire with them regarding a company to seed/aerate the field. Here's a link to their website below:
http://www.phila.gov/parksandrecreation/Pages/default.aspx
Best of luck!