Specifications include, but are not limited to: The selected Offeror will provide design services for the improvements at the Newtowne State Park as required to implement the Scope of Work per the DGS Procedures Manual. The improvements project includes design and engineering, creation of construction bid documents, participation in the bidding process; mandatory presence at the construction site for the entire construction duration of the project, and limited participation at Warranty meetings held at 6, 12, and 23 months after “Substantial Completion” the project. 3.3 Invoicing 3.3.1 General A. The Contractor shall send the original of each invoice and signed authorization to invoice to the Project Manager. B. All invoices for services shall be verified by the Contractor as accurate at the time of submission. C. An invoice not satisfying the requirements of a Proper Invoice (as defined at COMAR 21.06.09.01 and .02) cannot be processed for payment. To be considered a Proper Invoice, invoices must include the following information, without error: 1) Contractor name and address; 2) Remittance address; 3) Federal taxpayer identification (FEIN) number, social security number, as appropriate; 4) Invoice period (i.e. time period during which services covered by invoice were performed); 5) Invoice date; 6) Invoice number; 7) State assigned Contract number; 8) State assigned (Blanket) Purchase Order number(s); 9) Goods or services provided; 10) Amount due; and 11) Any additional documentation required by regulation or the Contract. D. Invoices that contain both fixed price and time and material items shall clearly identify each item as either fixed price or time and material billing. E. The Department reserves the right to reduce or withhold Contract payment in the event the Contractor does not provide the Department with all required deliverables within the time frame specified in the Contract or otherwise breaches the terms and conditions of the Contract until such time as the Contractor brings itself into full compliance with the Contract. F. Any action o