The contract value can be estimated by summing the total prices for each schedule. The total price for Schedule A is $58,101.00 for Blue Star Enterprises NW, $46,155.00 for Schneider Water Services, and $132,383.40 for the unspecified third vendor. The total price for Schedule B is $306,957.90 for Blue Star Enterprises NW, $216,439.80 for Schneider Water Services, and $188,833.68 for the unspecified third vendor. The total price for Schedule C is $632,920.80 for Blue Star Enterprises NW, $537,135.60 for Schneider Water Services, and $649,341.12 for the unspecified third vendor. The grand total for each vendor is $997,979.70 for Blue Star Enterprises NW, $799,730.40 for Schneider Water Services, and $970,558.20 for the unspecified third vendor. Based on this information, the contract value can be estimated to be around $970,558.20, which is the grand total for the unspecified third vendor.