Demolition at the Delaware County SPCA will have to wait another day or two. The leveling of the back portion of the Upper Providence shelter was due to begin Monday but put on hold until PECO workers relocate an electrical panel in the demolition zone. The SPCA's former surgery suite and isolation and intake departments will be taken down as part of the project, which includes the creation of a new "kennel support wing" to house those services and several others.