The work consists essentially of the following estimated quantities: Approximate Quantities Item # Description Quantity Unit 1 Remove 18" Cmp 41 Lf 2 Remove 24" Cmp 48 Lf 3 Remove 36" Rcp 48 Lf 4 Remove 48" Cmp 127 Lf 5 Remove 18" Flared End Section 1 Ea 6 Remove 36" Flared End Section 1 Ea 7 Construct 18" Rcp, Class Iii 83 Lf 8 Construct 36" Rcp, D(0.01) = 1350 48 Lf 9 Construct 42" Rcp, D(0.01) = 1350 57 Lf 10 Construct 48" Rcp, D(0.01) = 1350 127 Lf 11 Construct 72" I.d. Storm Manhole (1) 12 Vf 12 Construct 18" Rc Flared End Section 1 Ea 13 Construct 36" Rc Flared End Section 1 Ea 14 Construct 42" Rc Flared End Section 2 Ea 15 Construct 48" Rc Flared End Section 1 Ea 16 Install Pipe Couplers 45 Ea 17 Construct 18" Concrete Collar 2 Ea 18 Construct Type B Rip Rap 84 Tn 19 Remove Concrete Header 25 Lf 20 Construct 4" Aggregate Surface Course 25 Tn 21 Construct Concrete Header 25 Lf 22 Construct 7" Concrete Pavement (Type L65) 202 Sy 23 Subgrade Preparation 67 Cy 24 Tie Bars 7 Ea 25 Construct End of Road Markers 3 Ea 26 Excavation on-site (Established Quantity) 1308 Cy 27 Install Seeding - Nrd Mix 5400 Sy 28 Install Erosion Control Matting 5400 Sy All proposals must be submitted on bid forms furnished by E & A Consulting Group, Inc., and must be accompanied by an original bid bond or a certified check in the amount not less than $6,900.00 made payable to the Treasurer of Sanitary and Improvement District 312 as security that the bidder to whom the contract may be awarded will enter into a contract to build the improvements in accordance with this Notice to Contractor and will give a contract and maintenance bond in the amount of 100% of the total contract price, all as provided in the specifications. Bid bonds must be executed by a duly licensed corporate surety. Checks accompanying proposals not accepted shall be returned to the bidders. No bidder may withdraw his proposal for a period of sixty (60) days after date set for opening of bids. All proposals must be enclosed in an envelope, sealed and addressed to the "Clerk of Sanitary and Improvement District 312" and shall be marked "PROPOSAL FOR CULVERT IMPROVEMENTS - SECTION III" with the bidder's name and address on said envelope. The Bid Security shall be in a separate sealed envelope attached to the Proposal envelope and shall be marked "BID SECURITY" with the project identified thereon. Proposals received after the above time shall be returned unopened to the bidder submitting the proposal. The work herein provided shall be done under written contract with the responsible bidder submitting the lowest acceptable bid in accordance with the requirements of the plans and specifications and as provided by law. Sanitary and Improvement District No. 312 of Sarpy County, Nebraska, reserves the right to reject any or all bids received and to waive informalities and irregularities.
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