Site work for a water / sewer project in Omaha, Nebraska. Completed plans call for site work for a water / sewer project.

APPROXIMATE QUANTITIES Item No. Description Quantity Unit 1. REMOVE 42" PIPE PLUG 1 EA 2. REMOVE 42" RCP 58 LF 3. REMOVE 42" RC FLARED END SECTION 1 EA 4. REMOVE 60" RC FLARED END SECTION 1 EA 5. EXCAVATION ON-SITE (ESTABLISHED QUANTITY) 3,200 CY 6. CONSTRUCT 18" RCP, CLASS III 1,273 LF 7. CONSTRUCT 24" RCP, CLASS III 726 LF 8. CONSTRUCT 30" RCP, CLASS III 656 LF 9. CONSTRUCT 36" RCP, CLASS III 95 LF 10. CONSTRUCT 42" RCP, D0.01=1,350 1,010 LF 11. CONSTRUCT 48" RCP, D0.01=1,350 795 LF 12. CONSTRUCT 54" RCP, D0.01=1,350 311 LF 13. CONSTRUCT 60" RCP, D0.01=1,350 201 LF 14. CONSTRUCT 54" STORM SEWER MANHOLE (2) 12.3 VF 15. CONSTRUCT 72" STORM SEWER MANHOLE (6) 44.3 VF 16. CONSTRUCT 84" STORM SEWER MANHOLE (1) 8.0 VF 17. CONSTRUCT 120" STORM SEWER MANHOLE (2) 18.6 VF 18. CONSTRUCT 42" STORM SEWER MANHOLE TAP 1 EA 19. CONSTRUCT 24" RC FLARED END SECTION 1 EA 20. CONSTRUCT 30" PIPE PLUG 1 EA 21. INSTALL EXTERNAL FRAME SEAL 5 EA 22. CONSTRUCT HDPE INLET DIVERSION 14 LF 23. SEDIMENT BASIN CLEANOUT (BY OTHERS) 1 LS The amount of the engineer's estimate of the cost of said improvements (exclusive of engineering, fiscal, legal, interest, easement acquisition, and miscellaneous costs) is $1,196,000. 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 $59,800 made payable to the Treasurer of Sanitary and Improvement District 372 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 372" and shall be marked "PROPOSAL FOR STORM SEWER - SECTION II" 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 372 of Sarpy County, Nebraska, reserves the right to reject any or all bids received and to waive informalities and irregularities. specifications and as provided by law. Sanitary and Improvement District 372 of Sarpy County, Nebraska, reserves the right to reject any or all bids received and to waive informalities and irregularities. The work to be performed in this improvement shall consist of the installation of a storm sewer system of reinforced concrete pipe or other approved materials, together with manholes, structures, necessary appurtenances and other work that is incidental and necessary for a completed improvement. 4.01 Intent of Contract The Contract's intent is to provide for the construction and completion in every detail of the work described. The Contractor shall furnish all labor, materials, equipment, tools, transportation, supplies, and all incidentals required to complete the work in accordance with the Contract Documents. The Engineer will provide the Contractor one (1) complete copy of the Contract Documents. The Contractor shall have this complete copy available on the work site at all times. The Engineer will provide six (6) copies of all plans,specifications, and addenda at no cost to the Contractor. The Engineer may furnish additional copies for a fee. 4.02 Alteration of Plans or Character of Work The Engineer reserves the right to alter the following: o Contract item quantities; o Construction details; or o Roadway, sewer, structure, or facility grade or alignment. Alterations will not waive or invalidate any Contract provisions. If the alteration increases or decreases the total original estimated Contract sum by twenty-five (25) percent or more, the Owner may execute a supplemental agreement with the Contractor. Work on an alteration requiring a supplemental agreement shall not begin until all parties have executed such agreement. Upon submitting a proposal, the Contractor acknowledges that the quantities contained in the proposal forms, unless otherwise indicated in the Contract Documents, are estimates that may vary. No claims for anticipated profit, profit loss, or any other damage due to variation between the proposal and the actual quantities are allowed. 4.03 Extra Work The Contractor shall perform extra work in accordance with the Contract Documents or as directed by the Engineer. The Engineer must recognize the extra work in writing before the Contractor performs such work. The Engineer shall provide the Contractor an Extra Work Order indicating the mutually agreed upon payment format before extra work is performed. If no such payment format exists, the Contractor will perform extra work as force account work. The Contractor has the right to appeal an Engineer's judgment of whether work done by the Contractor constitutes extra work. Such appeals must be in writing. The Contractor mustsubmit the appeal no laterthan seven (7) calendar days after completing such work. The Engineer reserves the right to halt work performed under an extra work order in accordance with these specifications. 4.04 Maintenance of Detours Unless otherwise indicated in the Contract Documents, the Contractor shall not close a traveled way without the express permission of the Traffic Engineer of the Local Jurisdiction. When indicated in the Contract Documents, the Contractor shall assume all responsibility for providing and maintaining detours around the work. The Contractor shall close or open detour routes in accordance with the requirements of the most current version of the Manual of Uniform Traffic Control Devices (MUTCD) and the City of Omaha Barricading Standards, Specifications, Methods, and Materials. The Contractor shall provide access to local traffic within the project, as practicable, in accordance with the Contract Documents or as directed by the Engineer. The Contractor is responsible for maintaining any temporary approaches or crossings. 4.05 Removal and Disposal of Surplus Materials, Discarded Materials, Rubbish, Debris, Structures, and Obstructions Unless otherwise indicated in the Contract Documents, the Contractor shall remove any existing structures that are not to remain in place. Existing structures are to remain in place until the replacement structures are complete unless such existing structures interfere with the work. As directed by the Engineer, any materials deemed fit for use elsewhere shall remain the property of the Owner. The Contractor shall remove such materials without damage in readily transportable sections. The Owner reserves the right to retain ownership of all surplus materials. As directed by the Engineer, the Contractor shall deliver any retained surplus materials to a designated facility. The Contractor shall remove and dispose of any obstructions or surplus materials encountered and not retained by the Owner at no additional expense to the Owner. The Contractor shall thoroughly wash any pavement, walks, gutter lines, or other constructed items to remove soil or other foreign materials throughout the course of the project as directed by the Engineer. The Contractor shall remove and dispose of all discarded materials, rubbish, or debris at no additional expense to the Owner in accordance with all Local, State, and Federal regulations and laws. The Contractorshall remove such material within twentyfour (24) hours of the Engineer requesting that the Contractor remove the materials. The Owner may remove from the site, at the Contractor's expense, any surplus or discarded materials (including existing manholes and inlets on site), rubbish, or debris remaining after twenty-four hours. The Contractor shall mow all areas of the project where vegetation growth exceeds eighteen (18) inches in height at no additional cost to the Owner. The Contractor shall cut such vegetation as close to the ground as possible. The Contractor shall rake and remove the cuttings from the premise immediately. 4.06 Rights In and Use of Materials Found on the Project The Contractor may use stone, gravel, or other materials found within the excavation limits as designated by the Engineer or the Contract Documents. All materials are subject to approval by the Engineer. Payment for the excavation of such items will be at the corresponding Contract Price therefore. The Contractor shall replace such material as was contemplated for use in embankments, backfill, approaches, or otherwise with other suitable material at no additional expense to the Owner. The Contractor shall not excavate or remove any material outside of the excavation limits without written authorization from the Engineer. The Engineer may permit the temporary use of material from an existing structure for erection of a new structure unless otherwise indicated in the Contract Documents. The Contractor shall not use such material without approval of the Engineer. 4.07 Final Clean Up Upon completion of the work, the Contractor shall leave the project site in a neat and presentable condition as determined by the Engineer. At a minimum, the Contractor shall remove all rubbish, excess materials, falsework, temporary structures, equipment, and any other items not included in the final project. The Contractor shall dispose of any trees, stumps, or other removed materials placed on properties adjacent to the project as indicated in these specifications. The Engineer shall not authorize final payment and acceptance of the work until such conditions are met. 4.08 Special Requirements Exposing Existing Utilities - The Contractor shall, without extra compensations, furnish all labor and equipment to make all test holes, excavations and other work required at any time when directed by the engineer for the purpose of determining the location and elevation of existing conduits and/or structures located beneath the surface of the ground. Sewer Mains - The contractor shall deliver to the owner a complete sewer system in accord with the plans and specifications. All sewer mains, including the service lines and/or stubs shall be completely cleaned of mud, water, dirt, debris and foreign materials. Approval of each sewer line of 8-inch diameter and above will be subject to testing by a television camera. The contractor, if necessary as determined by the engineer, shall flush all sewers to allow the television cameras to transverse through the sewer mains. It may be necessary to televise certain sewer lines prior to the completion of the entire sewer system, if so, the contractor shall, upon request of the engineer, flush and clean the sewer mains that were so requested. If the contractor fails to clean the sewer mains within three calendar days after notification by the engineer, then the engineer will cause said cleaning work to be accomplished by others and the contractor shall be liable to pay said costs. The project consists of developing approximately 121.5 acres ofland fot residential and limited.muitifamily subdivision development located southeast ofthe proposed intersection ofSouth 90th Street and Summit Ridge Drive in Sarpy County, Nebraska, Mass grading will be required to establish finished grades across the site. Topography ofthe site consists of rolling hills with a maximum elevation difference of approximately 55 feet. Based on the Grading Exhibit prepared by E & A Consulting Group, Inc, dated January 10. 2022, maximum cuts nearing 18.5 feet and maximum fills nearing 17,5 feet are anticipated in limited areas, with cuts and fills of4 to 8 feet over the vast majority of the site. A network ofstorm sewer, sanitary sewer, gas main, water main, and fiber aie anticipated to be installed. The majority of utilities are anticipated to be installed, in the upper 15 feet. Two sediment basins will be constructed across the project site and are anticipated to be constructed in outlets. Maximum cuts of up to 12 fest are anticipated for the basins. A network ofinterior concrete-paved roadways and sidewalk will also be constructed. An existing single-story, slab-on--grade structure is located on the southeast corner ofthe property. This structure will be razed to make way for the development. February 23,2022. Psge 2 An additional geotechnical exploration consisting of more strategically placed borings should be conducted for the proposed multi-family lol after building types, locations, and finished floor elevations are determined