This contract is for furnishing and delivery of 4", 6", 12", 16" and 18" Welded Steel Pipe. The delivery of all 16" welded steel pipe is due by February 29, 2024 and the delivery of all 4" welded steel pipe is due by April 30, 2024. All 6", 12" and 18" pipe is due by June 1, 2024. See Special Provision Section 1.5 for details. The delivery location is at our Pelican Way Pipe yard in San Rafael within the County of Marin, California A bid guarantee in the amount of ten (10) percent of the bid amount must accompany the bid. The proposal guarantee must be in the form of one of the following: cash, a cashiers check made payable to District, a certified check made payable to the District, or a bid bond executed by an admitted surety insurer authorized by the California State Department of Insurance to transact business in California made payable to the District. The Bidder's attention is directed to the fact that requirements are set forth in the Bid Item Descriptions and the Technical Specifications, which indicate the specific and detailed work to be performed under each of the items shown on the Bidding Sheet Schedule. This contract is for the furnishing and delivery of cement mortar-lined, plastic coated or tape wrapped electric-welded steel pipe as a completed product in the size and quantity set forth on the Bidding Sheet Schedule and quality set forth in Appendix B. The estimated quantities given in the Bid Form are approximate and are given only as a basis for comparison of bids. The District does not expressly, nor by implication, warrant that the actual amount of work will correspond to the estimated quantities. The District reserves the right to increase or decrease the amount of work performed under unit price Bid Items, or to omit such work altogether unless such change exceeds 25 percent of the total contract bid price. No adjustments to the Contract unit prices will be made, nor will any claim for loss of anticipated profit be allowed on account of any such increase, decrease, or omission.