By Kim Glovas

PHILADELPHIA (CBS) –The Philadelphia Streets Department is collecting household hazardous materials on Saturday from 9 a.m. to 3 p.m.

Even though the materials that are collected Saturday only amount to one-percent of the entire waste stream, Streets department spokesman Scott McGrath says they do present a problem to the public and the environment if they go into landfills. So, what will be collected?

“Items that we take that a lot of people are starting to now recognize do contain potentially hazardous materials that are in them–products like old computers, TV and computer monitors, other items like used oil and anti-freeze.”

McGrath says the oil and antifreeze are recycled, and so are a number of other products like mercury thermostats and thermometers. The event is being held at the First Highway Yard in the 4800 block of Parkside Avenue. Other similar events will be held this summer.