This sources sought is to find companies interested in being part of a Blanket Purchase Agreement (BPA) with the Tobyhanna Army Depot for Paving Materials which would include cement. The Scope of Work... This sources sought is to find companies interested in being part of a Blanket Purchase Agreement (BPA) with the Tobyhanna Army Depot for Paving Materials which would include cement. The Scope of Work is the first rough draft as move towards the official solicitation in the next several weeks. If you are interested in this requirement, please experss your interest by sending an email to Brian.K.Dionysius.civ@army.mil.