ADDENDUM NO. 2. Kenai Peninsula Borough Purchasing & Contracting. Invitation to Bid ITB Nikiski Fire Station Rescue Boat House, Nikiski, AK

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1 KENAI PENINSULA BOROUGH Purchasing and Contracting 144 North Binkley Street Soldotna, Alaska Toll-free within the Borough: , Ext PHONE: (907) FAX: (907) ADDENDUM NO. 2 DAVID R. CAREY BOROUGH MAYOR TO: FROM: All Bid Packet Holders Kenai Peninsula Borough Purchasing & Contracting DATE: August 5, 2010 SUBJECT: PAGES: Invitation to Bid ITB Nikiski Fire Station Rescue Boat House, Nikiski, AK KPB Addendum (2 pages) Site Plan Drawing, A0.1 dated Aug. 5, 2010, (1 page) Asphalt Specification 02501, (3 pages) REVISED DUE DATE: August 10, 2010, by no later than 2:00 pm NOTICE TO BIDDERS Bidders must acknowledge receipt of this Addendum in the appropriate place in the bid documents prior to bid opening. ITEM I: Bid Due Date has been Changed to August 10, 2010, by no later that 2:00 pm ITEM II: Changes to Addendum Number One A: Disregard the following Plan Holder Questions and Responses as no longer applicable due to relocation of the building site: Conduits stubbed up near the former site are no longer an issue. Services have been extended to within 5 of the new building pad location No change The overburden on the new building pad has been removed to an elevation which will allow a leveling course and slab. The undisturbed soil will need no further compaction, except that which is disturbed during this project No change No change No change 1 of 2

2 01-07 No change No change No change Refer to above. An asphalt drive is shown to be installed between the existing asphalt parking area and around two sides of the building as shown. ITEM III: Changes to Drawings Sheet A0.1R - Delete Sheet A0.1R dated 7/01/10 from Addendum No. 1 Add Sheet A0.1R dated 7/08/10 showing new site and utility services location Sheet A1.2 Rotate man door 180 degrees to swing out. Sheet A1.3 Rotate man door 180 degrees to swing out. Sheet A1.4 Change bubble from 2.2 to A1.3 Rotate man door 180 degrees to swing out. Change bubble from E1.2 to A1.4 Sheet A3.3 Change bubble from A3.3 to A3.1 Sheet A5.1 Change bubbles from A5.0 to A5.1 Sheet M1.1 Rotate man door 180 degrees to swing out. Sheet E1.1 Sheet E1.2 Rotate man door 180 degrees to swing out. Rotate man door 180 degrees to swing out. ITEM IV: Changes to Specifications A. Add Asphalt Paving Section 02501, (3 pages) END OF ADDENDUM NO. 2 2 of 2

3 SECTION ASPHALT PAVEMENT PART 1 GENERAL 1.01 DESCRIPTION A. The Contractor shall provide all labor, material, equipment and supervision necessary for the furnishing and placing of the aggregate Base Course and Asphalt Concrete Pavement as shown on the contract drawings REFERENCE SPECIFICATIONS All work in this section shall be in conformance to the "Standard Specifications for Highway Construction, 2002 Edition" of the Alaska Department of Transportation and Public Facilities (ADOT&PF), Section 301 (Aggregate Base Course), Section 401 (Asphalt Concrete Pavement), and Section 703 (Aggregates) REFERENCE STANDARDS A. Testing Standards for Asphalt Concrete Pavement 1. Cores: ASTM D979. "Sampling Bituminous Paving Mixtures". 2. Core Density: ASTM D "Bulk Specific Gravity of Compacted Bituminous Mixtures Using Saturated Surface Dry Specimens". 3. Thickness: ASTM D "Thickness and Height of Compacted Bituminous Mixture Specimens". 4. Nuke Density: ASTM D "Density of Concrete in Place by Nuclear Method". 5. Asphalt Content: ASTM D "Asphalt Content by Nuclear Method". 6. Gradation: ASTM C136. "Sieve Analysis of Coarse and Fine Aggregate". 7. Marshall Analysis (Stability):ASTM D 1559 and D "Resistance to Plastic Flow of Bituminous Paving Mixtures Using Marshall Apparatus". "Bulk Specific Gravity of Compacted Bituminous Mixtures Using Saturated Surface Dry Specimens". 8. Extraction: ASTM D "Quantitative Extraction of Bitumen from Bituminous Paving Mixtures". B. Testing Standards for Base Course 1. Gradation: ASTM C 136. "Sieve Analysis of Coarse and fine Aggregate". 2. Density: ASTM D 2922 and ASTM D "Density of Soil-Aggregate in Place by Nuclear Methods, Shallow Depth". "Moisture Content of Soil in Place by Nuclear Methods, Shallow Depth". 3. Maximum Density: ASTM D "Moisture-Density Relations of Soil and Soil-Aggregate Mixtures Using 10 lbs. (4.54 kg) Rammer and 18 Inch (457 mm) Drop".

4 PAGE 2 OF SUBMITTALS A. Base Course: Contractor shall submit Gradation and Maximum Density test results for base course aggregate materials to be incorporated into the project. B. Asphalt Concrete: The Contractor, at his expense, shall submit for approval, a Job Mix formula (with accompanying curves) within the limits established by the reference specifications, for the mix designated by this Contract. The Contractor shall also submit a certification that all materials provided under this project comply with the Job Mix formula and the project specifications. PART 2 PRODUCTS 2.01 BASE COURSE A. Base Course material shall meet the requirements of ADOT&PF "D-1 Aggregate for Untreated Base". Minimum ASPHALT CONCRETE PAVEMENT A. Asphalt Concrete shall meet the requirements of ADOT&PF "Type II Asphalt Concrete". PART 3 EXECUTION 3.01 TESTING A. Compaction tests shall be taken on at the average rate of one test per 5,000 square feet of area for both the Base Course and the Asphalt Pavement. Failing tests shall be retested at no additional cost to the Owner. B. Gradation tests, in accordance with ASTM C 136, shall be performed on the Base Course at the rate of one test per 100 cubic yards or each day's haul, whichever is less. C. Asphalt content and gradation tests shall be taken for the Asphalt Pavement at the average rate of one test per 5,000 square feet of area CONSTRUCTION STAKING A. The Contractor shall provide construction staking (blue tops) for establishing proper grades on the leveling course at the perimeter plus all breaks in grade BASE COURSE A. The base course material shall be deposited and spread in a uniform layer to the required contour and grade and to such loose depth that when compacted to the density required, the layer will be a minimum of 2 thick.

5 PAGE 3 OF B. Blading, rolling and tamping shall continue until the surface is smooth and free from waves, bumps and depressions. The leveling course shall be compacted to at least 95 percent of maximum density. The surface of the leveling course shall not show any deviation in excess of 3/8 inch when tested with a ten foot straightedge applied to the area to be paved. The surface grade shall not deviate more than 0.05 foot from the plan grade. Any deviation in excess of these amounts shall be corrected by loosening, adding, or removing material and reshaping and compacting to 95% of maximum dry density ASPHALT PAVEMENT A. Weather Limitations 1. The mixing and placing of hot-mix asphalt shall be performed only when weather conditions are suitable. 2. No mix shall be placed when water is puddled or standing on the surface. 3. No mix shall be placed when the temperature of the surface on which the mix is to be placed is less than 45 degrees Fahrenheit except that, with the permission of the Owner's Representative, asphalt mixes may be placed upon surfaces having temperatures of not less than 35 degrees Fahrenheit provided hot-mix asphalt shall be delivered continuously to the paver at temperatures between 250 and 325 degrees Fahrenheit. B. Asphalt Placement 1. Joints and edges shall be constructed without bumps or apparent seams. 2. The completed pavement shall have a minimum density of 96% of the maximum laboratory density as determined by ASTM D 2726 for the job mix. 3. The final surface shall be of a uniform texture conforming to true grade and cross- sections as shown on the plans. All irregularities which vary more than 3/16 inch in 10 feet, or 5/16 inch in 16 feet shall be corrected. END OF SECTION

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