Specifications include, but are not limited to: OEM captive parts for medium/H.D. trucks for the Fleet Department. 17.1 Contractor's facility must have adequate security and storage to provide appropriate protection during the time the vehicles are in possession of the contractor. Contractor is responsible in all matters for City of Laredo vehicles in their possession. Damages due to neglect or abuse of vehicles and equipment while in the possession and control of the contractor is the responsibility of the contractor. City of Laredo Fleet personnel may perform a pre-award site visit of Contractor's facility prior to contract award. Outside parts will not have an up-charge in excess of twenty (20%) percent and will not offer a rebate to the contractor. Copies of all prepaid outside charges must be attached to invoices provided with final invoice once repairs are complete. 17.2 Parts by contractor will be billed at the discount noted in the Schedule of Items. 17.3 Invoices: 17.3.1 Must be legible and reference a valid purchase order number. 17.3.2 Must be approved by an appropriate City of Laredo Fleet department representative. 17.3.3 Items billed on invoices must be specific as to applicable stock, manufacturer, catalog or part number. 17.4 City of Laredo personnel may pickup parts from Contractor's facility 17.5 All parts must be new and best available unless authorized in advance by the Fleet Maintenance representative. 17.6 The manufacturer names, trade names, brand names and products numbers used herein are for the purpose of describing and establishing tested, compatible, approved and acceptable products that are of the type and quality required by the City of Laredo. 17.7 All costs associated with shop supplies, environmental fees, or any other expenses incurred in fulfilling this contract are to be included in the bid price.