This agreement is entered for the purpose of facilitating the provision of Low-Income Home Energy Assistance Program (LIHEAP) benefits. The PA Turnpike Vendor Guide provides an understanding of our basic procedures for centralized purchasing, including some frequently asked questions (FAQs).This form must be attached (uploaded) with the bid submission. All attachments must be downloaded filled out and attached to the bid. The Bidder must complete and submit Form STD-168 with its bid. One copy of the proposal is to be filled out and submitted with the bid and the remaining copy to be retained for the responder's records. 1. Enter buyer and seller details. The submission of a proposal shall constitute and establish the vendor's intent to enter into a binding contract with the County. This form must be attached (uploaded) with the bid submission. All attachments must be downloaded filled out and attached to the bid.