If you have a Gretna address, the City of Gretna has opened a tree limb drop off site located on 216th Street between Angus Street and Gruenther Road, across from Sun Valley Gardens. Only tree limbs will be accepted. The site is available for use by anyone that has a Gretna address. You must present your driver's license for proof of address. Again, only tree branches and limbs can be dropped off.