August 18: Collecting stoops | PFOA health limit | Rizzo statue defaced

Police arrested a man suspected of spray-painting ‘black power’ on the statue of former mayor Frank Rizzo late Thursday, the Philadelphia Inquirer reports.

Collecting stoops and stories: Hidden City Philadelphia checks in with Philadelphia-based artist Kaitlin Pomerantz, one of the 20 artists participating in Monument Lab this fall. Pomerant has assembled an assortment of stoops from demolished houses throughout the city for an installation in Washington Square Park, where they will breathe new life as public art, seating, and a community conversation piece.

Speaking of Monument Lab: Philly, what is an appropriate monument for the current City of Philadelphia? Tell us your thoughts.

For the first time in forty years, Pennsylvania’s Environmental Quality Board will consider whether to set a health limit for the toxic chemical PFOA in drinking water, StateImpact PA’s Jon Hurdle reports.

Voices from the tracks: longtime resident Ramon Cruz and cultural anthropologist Philippe Bourgois give a tour of the neighborhood in and around the heroin encampment in Kensington on The Pulse. They discuss “this changing landscape, how it even came to be, and how its dynamics have been playing out in a much bigger story about urban decline, development and addiction.”

Surprising twist: could Center City homes actually be driving millennials out? Econsult Solutions examines the correlation between the Philadelphia Housing Index and the change in neighborhoods’ millennial compositions, finding “that Center City West, University City, and Wharton (which includes Bella Vista and Hawthorne) have all experienced a proportional decrease in their millennial population, while gaining in overall residents.”