Taxiways P and P7 Drainage Improvements Re-bid CONTRACT NO ADDENDUM NUMBER ONE

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1 Department of Aviation Airport Office Building 8500 Peňa Boulevard Denver, Colorado (303) March 3, 2015 Taxiways P and P7 Drainage Improvements Re-bid ADDENDUM NUMBER ONE This Addendum Number One supersedes and/or supplements all portions of the Contract Documents with which it conflicts. Bidders must acknowledge receipt of this addendum on page 28 of the Bid Forms. Dave LaPorte Deputy Manager of Aviation Airport Infrastructure Management

2 D E N V E R I N T E R N A T I O N A L A I R P O R T TAXIWAYS P AND P7 DRAINAGE IMPROVEMENTS RE-BID ADDENDUM NUMBER ONE Scope of this Addendum Addendum Number One includes modifications to the following Contract Documents issued February 20, These modifications are deemed necessary by the City and County of Denver. PART ONE, VOL. 1 - CONTRACT DOCUMENTS Questions are due, in writing, no later than 2pm Friday, March 6, All questions are to be submitted to contract.procurement@flydenver.com. PART ONE, VOL. 1 SCHEDULE OF PRICES AND QUANTITIES Beginning on page 33 replace in its entirety, the Schedule of Prices and Quantities with the following attachment. The total number of pages (including cover sheet) contained in this Addendum Number One is two (2) and one attachment. * * * * * * * End of Addendum Number One.

3 DENVER INTERNATIONAL AIRPORT TAXIWAY P AND P7 DRAINAGE IMPROVEMENTS RE-BID Part 2 - Schedule of Prices and Quantities Item No. Description and Price Quantity Unit Unit Price Extension Schedule A: Taxiways P, P7, and Runway 17L-35R Drainage Improvements (Non-Federal) b Construct Unpaved CDOT Class 6 Access Roads at the unit price of 3,675 SY a Vehicle Tracking Control at the unit price of 2 EA b Reinforced Rock Berm Inlet Protection at the unit price of 4 EA a Flagger at the unit price of 320 HR ($ ) per hour. P-150a Remove Existing Rip Rap at the unit price of 829 SY P-150b Remove Existing Grouted Rip Rap at the unit price of 110 SY P-152a 6" Topsoil Removal, Stockpile, and Replacement at the unit price of 21,911 SY P-152b Unclassified Excavation Import Lower Select Fill from Offsite at the unit price of 5,033 CY P-152d Unclassified Excavation at the unit price of 809 CY P-161a Geotextile Fabric at the unit price of 1,674 SY P-304Ca Crushed Aggregate Base Course, CDOT Class 6 (6-Inch Lift) at the unit price of 1,674 SY

4 D-710a Riprap, Type M, Grouted at the unit price of 548 CY D-710b Riprap, Type H, Grouted at the unit price of 126 CY D-752a Concrete Trickle Channel at the unit price of 1,625 LF T-901a Seeding at the unit price of 4.3 AC T-908a Hydraulic Mulching at the unit price of 4.3 AC Schedule A Total: Schedule B: Drainage Outfall Improvements (Non-Federal) c Construct Temporary Access Road at the lump sum of 1 LS b Reinforced Rock Berm Inlet Protection at the unit price of 2 EA P-150a Remove Existing Rip Rap at the unit price of 98 SY P-152a 6" Topsoil Removal, Stockpile, and Replacement at the unit price of 1,670 SY P-152c Unclassified Excavation Export Offsite at the unit price of 18 CY P-152d Unclassified Excavation at the unit price of 128 CY D-710b Riprap, Type H, Grouted at the unit price of 221 CY

5 D-752a Concrete Trickle Channel at the unit price of 389 LF T-901a Seeding at the unit price of 0.3 AC T-908a Hydraulic Mulching at the unit price of 0.3 AC Schedule B Total: Schedule C: ARFF Station No. 3 Drain Line (Non-Federal) 02521a 2-Inch Type K Copper or Sch 40 PVC Water Pipe Including Trench and Backfill at the unit price of 595 LF 02521b 2-Inch Pipe Outfall With Tideflex Check Valve at the unit price of 1 EA Schedule C Total: Basis for Selecting the Apparent Low Bidder - Total for Schedules A through C:

ADDENDUM NUMBER FOUR

ADDENDUM NUMBER FOUR Department of Aviation Airport Office Building 8500 Peňa Boulevard Denver, Colorado (303) 342-2200 www.flydenver.com March 28, 2017 2017 Annual Airfield Pavement Rehabilitation CONTRACT NO. 201733182 ADDENDUM