Am_0001.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICAITON NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicble)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICIATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a)By completing items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment your desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPIRATION DATA (If required)

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc. ) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION ( Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

Amendment No. 0001 14-May-2009

U.S ARMY CORPS OF ENGINEERS, OMAHA DISTRICT

CONTRACTING OFFICE

1616 CAPITOL AVE.

OMAHA, NE 68102-4901

See Item 6

W9128F-09-B-0013

22-APR-2009

REPAIR RUNWAYS 29 END AND 11 END,MINOT AFB, NORTH DAKOTA

See attached documentation for content of the amendments to this solicitation

Date for receipt of Bids is 26 May 2009 at 1400 hours

Government Point of Contact: John Denning (402) 995-2053

14-May-2009

Am #0001 - 1

Am #0001 - 2 (Continuation of SF 30)

DEPARTMENT OF THE ARMY

Omaha District, Corps of Engineers 1616 Capitol Avenue Omaha, Nebraska 68102-4901

:NOTICE: Failure to acknowledge : Solicitation No. W9128F 09 B 0013 :all amendments may cause rejec- :

:tion of the bid. See FAR : Date of Issue: 22 APR 2009 :52.214-3 of Section 00 21 00 : Date of Opening: 26 MAY 2009

Amendment No. 0001 14 May 2009

SUBJECT: Amendment No. 0001 to Specifications and Drawings for Construction of

REPAIR RUNWAYS 29 END AND 11 END, MINOT AFB, NORTH DAKOTA

Solicitation No. W9128F 09 B 0013.

TO: Prospective Bidders and Others Concerned

1. The specifications and drawings for subject project are hereby modified as follows (revise all specification indices, attachment lists, and drawing indices accordingly).

a. Specifications. (Descriptive Changes.)

(1) Cover Page, delete cover page it its entirety and substitute the attached revised cover page which includes the American Recovery and Reinvestment Act emblem.

(2) Section 01 30 00.24, Page 4, to the end of paragraph 1.6 a., add:

“No construction materials or equipment will be permitted to be stored in the staging area or flight line during the winter exclusion period.”

b. Specifications (New and/or Revised and Reissued). Delete and substitute or add specification pages or sections as noted below. The substituted pages or sections are revised and reissued with this amendment.

Pages Deleted Pages Substituted or Added

--- Section 02602

2. This amendment is a part of the bidding papers and its receipt shall be acknowledged on the Standard Form 1442. All other conditions and requirements of the specifications remain unchanged. If the bids have been mailed prior to receiving this amendment, you will notify the office where bids are opened, in the specified manner, immediately of its receipt and of any changes in your bid occasioned thereby.

a. Hand-Carried Bids shall be delivered to the U.S. Army Corps of Engineers, Omaha District, Contracting Division, 1616 Capitol Avenue, Omaha, Nebraska 68102-4901.

b. Mailed Bids shall be addressed as noted in Item 8 on Page 00 11

Am #0001 - 3 (Continuation of SF 30)

00-1 of Standard Form 1442.

3. Bids will be received until 1400 hours (2:00 p.m.), local time at place of bid opening, 26 May 2009.

Attachments Specification Cover Page Section 02602 STABILIZED-AGGREGATE BASE COURSE Questions and Answers (For Information Only)

U.S. Army Engineer District, Omaha Corps of Engineers 1616 Capitol Avenue Omaha, Nebraska 68102-4901

14 May 2009

DRL/2181

INVITATION FOR BIDS

(FOR CONSTRUCTION CONTRACT)

SOLICITATION NO. W9128F-09-B-0013

REPAIR RUNWAYS 29 END AND 11

END

MINOT AFB, NORTH DAKOTA

APRIL 2009

Air Combat Command U.S. Army Corps of Engineers, Omaha District Am #0001

02602-1

DIVISION 2 - SITEWORK

SECTION 02602

STABILIZED-AGGREGATE BASE COURSE

1. GENERAL:

1.1 APPLICABLE PUBLICATIONS: The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

1.1.1 American Society For Testing and Materials (ASTM) Standards:

C 88-2005 Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate

C 117-2004 Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing

C 142-1997 Clay Lumps and Friable Particles in Aggregates

C 131-2006 Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine, Test Method

C 136-2005 Sieve Analysis of Fine and Course Aggregates

D 75-2003 Sampling Aggregates

D 422-63 Particle-Size Analysis of Soils (R 2007)

D 1556-2007 Density of Soil In-Place by the Sand Cone Method

E 11-2004 Wire-Cloth Sieves for Testing Purposes

D 1557-2002e1) Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700KN-m/m3))

02602-2

D 4318-2000 Standard Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soil

1.1.2 U.S. Army Corps of Engineers Handbook for Concrete and Cement:

CRD-C 130-79 Scratch Hardness of Coarse Aggregate Particles

CRD-C 122-84 Lightweight Pieces in Aggregate

CRD-C 127-80 Petrographic Examination of Aggregates for Concrete

1.2 DEGREE OF COMPACTION: Degree of compaction is expressed as a percentage of the maximum density obtained by the test procedure in ASTM D 1557, compaction effort designation CE 55. This will be abbreviated hereinafter as percent CE 55 maximum density.

1.3 MATERIALS: Aggregates shall consist of crushed stone, crushed gravel, angular sand or other approved sound, durable materials processed and blended or naturally combined. Aggregates shall be durable and sound, free from foreign materials such as organic matter, lumps of clay and coatings.

The Contractor shall obtain materials that meet the requirements specified herein and that can be constructed to meet the gradation, compaction and smoothness requirements specified herein after placement. The material retained on a No. 4 sieve shall be known as course aggregate; that passing the No. 4 sieve shall be known as binder material.

1.3.1 Coarse aggregate conforming to the requirements specified above shall have a percentage of wear not to exceed 50 percent after 500 revolutions. When subjected to five cycles of the soundness test, in accordance with ASTM Standard C 88 using magnesium sulfate, the loss in weight of coarse aggregate shall not exceed 18 percent. Coarse aggregate shall consist of crushed rock or crushed gravel having angular fragments uniform in density and quality. The amount of flat and elongated particles shall not exceed 30 percent. A flat particle is one having a ratio of width to thickness greater than three, and an elongated particle is one having a ratio of length to width greater than three. Crushed gravel shall conform to the requirements of paragraph 1.3.1.1, CRUSHED GRAVEL or paragraph 1.3.1.2, COARSE AGGREGATE below.

1.3.1.1 Crushed gravel shall be manufactured from gravel

particles 50 percent of which by weight are retained on the maximum size sieve listed in paragraph 1.3.3: GRADATION, below.

1.3.1.2 Coarse aggregate retained on each sieve specified

shall contain at least 50 percent by weight of crushed pieces having two or

02602-3 more freshly fractured faces with the area of each face being at least equal to 75% of the smallest midsectional area of the piece. When two fractures are adjacent, the angle between the planes of the fractures must be at least 30 degrees to count as two fractured faces.

1.3.2 Binder material shall consist of screening, angular sand or other finely divided mineral matter processed or naturally combined with the coarse aggregate. The portion of any component, or of the completed course passing the No. 40 sieve shall be either non-plastic or shall have a liquid limit not greater than 25 and a plasticity index not greater than five.

1.3.3 Gradation requirements shall apply to the completed base. The maximum size of aggregate shall be not over two inches and the material shall be well graded within the limits specified below. The Contractor shall designate one of the following gradations for use on the project and all the material furnished for the project shall conform to the designated gradations after placement and compaction.

Percentage by Weight Passing Square-Mesh Sieve Sieve Designation No. 1 2 inches ----- 1-1/2 inch 100 1 inch 60-100 1/2 inch 30-65 No. 4 20-50 No. 10 15-40 No. 40 5-25 No. 200 0-8

0.02 mm 3 max

The above gradations represent the extreme limits which shall determine suitability of aggregate for use from all sources of supply. The aggregate used in the work shall have a gradation within the limits designated in the table, and shall not vary from the low limit on one sieve to the high limit on the adjacent sieve or vice versa, but shall be well graded from coarse to fine.

1.4 APPROVAL, SAMPLING AND TESTING: Sampling and testing shall be the responsibility of the Contractor and shall be performed at no additional cost to the Government. Sampling and testing shall be performed by an approved commercial testing laboratory. Tests shall be performed at the frequency specified hereinafter. Copies of test results shall be furnished to the Contracting Officer as soon as tests are performed and in every case prior to placing subsequent construction over completed base course.

1.4.1 General: The Contractor shall select the source of materials and perform initial sampling and testing sufficiently in advance to not delay the work. The Contractor shall control his operations during production and

02602-4 placement of material, so that materials in the completed course will meet specified requirements. All quality control sampling and testing shall be performed by the Contractor, as specified herein. The Government may perform verification tests for final approval of materials in the completed course.

1.4.2 Samples: All samples including those required and used by the Contractor for control of his operations, shall be representative of materials being placed. In addition, samples shall be taken from the completed and compacted course. All samples shall be taken in conformance with ASTM D 75 unless otherwise approved or directed.

1.4.3 Tests: The following tests shall be performed by the

Contractor:

1.4.3.1 Sieve Analyses shall be made in accordance with

ASTM C 117, C 136, and D 422. Sieves shall conform to ASTM E 11.

1.4.3.2 Wear (L.A. Abrasion) Test shall be made in

conformance with ASTM C 131.

1.4.3.3 Soundness shall be determined in accordance with

ASTM Standard C 88 using magnesium sulfate.

1.4.3.4 Liquid-Limit and Plasticity-Index shall be determined in accordance with ASTM D 4318.

1.4.3.5 Moisture-Density Determinations. The maximum density

and optimum moisture shall be determined in accordance with ASTM D 1557, compaction effort designation CE 55.

1.4.3.6 Field Density. Density shall be controlled in the

field by the Contractor in accordance with ASTM D 1556, or by approved nuclear devices, provided such devices operate to the satisfaction of the Contracting Officer. The minimum size sample hole for the density test shall be 0.075

cu. ft. for 1-inch maximum particle size and 0.100 cu. ft. for 2-inch maximum particle size. If nuclear devices are used, not less than one of every five consecutive field density tests shall be in accordance with ASTM D 1556 to provide correlation.

1.4.3.7 Crushed Particles shall be determined by visual

examination and measurement.

02602-5

1.4.4 Testing Frequency:

1.4.4.1 Initial Tests. One of each of the following tests

shall be performed on the proposed material prior to commencing construction to demonstrate that the proposed material will meet all specified requirements when furnished and after placing and compaction:

Sieve Analysis Including 0.02 mm Material L. A. Abrasion Particle Shape Crushed Particles, Unless Material is Crushed Quarried Rock Soundness Liquid-Limit and Plasticity-Index Moisture-Density Relationship

1.4.4.2 In-Place Tests. One of each of the following tests

shall be performed on samples taken from the placed and compacted base course.

Samples shall be taken for each 2000 square yards of material placed in each area.

Sieve Analysis Including 0.02 mm Material Liquid Limit and Plasticity Index Crushed Particles, unless the material is crushed quarried rock or unless otherwise approved

1.4.5 Submittals: The Contractor shall submit data as specified herein on the following:

1.4.5.1 Five copies of test results asked for in paragraphs

1.4.4.1 and 1.4.4.2.

1.5 MEASUREMENT AND PAYMENT: Measurement and payment of Stabilize Aggregate Base Course work performed under this contract shall be by surface area, as measured in square yards. Measurement and payment of New Base Course Material work performed under this contract shall be by mass of compacted fill material, as measured in tons. For estimating purposed the unit weight of the new base course material will be calculated at 1.875 tons per compacted cubic yard.

2. PRODUCTS: Not used.

02602-6

3. EXECUTION:

3.1 EQUIPMENT: All plant, equipment, tools and machines used in the performance of the work shall be subject to approval prior to commencement of work. This equipment shall be maintained in satisfactory working condition at all times.

3.2 OPERATION OF PITS OR QUARRIES: All work involved in the clearing, stripping and excavating in opening or operation of pits or quarries shall be performed by the Contractor. There are no pits or quarries on Government land. Pits or quarries on private lands shall be conditioned in agreement with local laws and authorities.

3.3 STOCKPILING MATERIAL: Prior to stockpiling of material, storage sites shall be cleared and leveled. Aggregates shall be stockpiled on designated cleared and leveled areas so as to prevent segregation. Aggregates and binders obtained from different sources shall be stockpiled separately.

3.4 WEATHER LIMITATIONS: Courses shall be constructed only when atmospheric temperature is above 35 degrees F. When the temperature falls below 35 degrees F., the Contractor shall protect, by approved methods, all areas of completed or partially completed stabilized-aggregate base course against freezing.

3.5 PREPARATION OF UNDERLYING COURSE: Prior to stabilizing the existing aggregate base course, it is the Contractor’s responsibility to notify the Contracting Officer of any yielding subgrade materials. The Contracting Officer will determine if the area in question requires stabilization. The underlying course shall meet the specified compaction and surface tolerances.

Ruts or soft, yielding spots in the underlying course, areas having inadequate compaction, and deviations of the surface from requirements set forth therein shall be corrected to specification requirements prior to placing the base course. The finished underlying course shall not be disturbed by traffic or other operations and shall be maintained by the Contractor in a satisfactory condition until base course is placed.

3.5.1 Soft or Yielding Subgrade Materials: The top six inches (6”) of soft or yielding subgrade materials shall be removed and disposed of off base. Install PCC rubble, three inches (3”) in diameter or less, in six inch (6”) lifts. Each lift shall be rolled into the soft or yielding subgrade with a roller before the next lift is placed. PCC rubble shall be worked into the soft or yielding subgrade until the area is stabilized, brought to the proper grade, and will accept no more PCC rubble. A final six inch (6”) sbabilized aggregate base course shall be placed on top of the stabilized

02602-7 subgrade to the proper grade. The base course shall be placed on top of the stabilized subgrade to the proper grade. The base course material shall consist of NDDOT Class 5 aggregate.

3.6 GRADE CONTROL: During construction, the lines and grades including crown and cross slope indicated shall be maintained by means of line and grade stakes placed by the Contractor.

3.7 MIXING AND PLACING MATERIALS: Placing procedures apply to each layer of this stabilized-aggregate base course. The Contractor shall, as directed, make such adjustments in mixing or placing procedures or in equipment as are necessary to obtain grades within the allowable tolerance, to minimize segregation and degradation, to reduce or increase water content, and to ensure meeting all requirements specified herein. Any areas, which after placement, do not conform to these specification requirements shall be removed and replaced with material as specified or remixed to meet specification requirements.

3.8 LAYER THICKNESS: The compacted thickness of the stabilized-aggregate base course shall be as indicated. When a compacted layer of six (6) inches or less is specified, the material shall be placed in a single layer. When a compacted thickness of more than six (6) inches is required, no single layer of the placed material shall be in excess of six inches nor less than three inches when compacted.

3.9 COMPACTION: Each layer of stabilized-aggregate base course including shoulders shall be compacted. Water content shall be maintained at optimum or at the percentage directed during compaction. In places not accessible to the rollers, the mixture shall be compacted with mechanical tampers. Compaction shall continue until the top six (6) inches are compacted to 100 percent of CE 55 maximum density. Layers below the top six (6) inches shall be compacted to 95 percent of CE 55 maximum density. The Contractor shall make such adjustments in rolling or finishing procedures as may be required to obtain true grades, to minimum segregation and degradation, to reduce or increase water content, and to ensure a satisfactory stabilized-aggregate base course.

Unsatisfactory materials shall be removed and replaced with satisfactory material.

3.10 EDGES OF THE BASE COURSE: Approved material shall be placed along edges of stabilized-aggregate base course in such quantities as will compact to thickness of each layer in a multiple-layer course, allowing in each operation at least a 1-foot width of the shoulder to be rolled and compacted simultaneously with rolling and compacting of each layer of base course.

02602-8

3.11 SMOOTHNESS: The surface of each layer shall show no deviations in excess of 3/8 inch when tested with a 10-foot straightedge applied both parallel with and at right angles to the centerline of the base course area.

Deviations exceeding this amount shall be corrected by removing material and replacing with new material, or by reworking existing material and compacting.

3.12 THICKNESS CONTROL: The Contractor shall control his operations by measurements to ensure placement of materials to the thickness specified.

Thickness measurements shall be made by test holes at least three inches in diameter through the course. One depth measurement shall be made for each 500 square yards or part thereof of base course. Measurements may be made by the Government for verification of compliance; however, the Contractor shall not depend on such measurements for his control of operations. The completed thickness of the base course shall be within 1/2 inch plus or minus of the thickness shown on the drawings. Where the measured thickness is deficient by more than 1/2 inch, the Contractor shall correct such areas by scarifying, adding mixture of proper gradation, reblading and recompacting. The average job thickness shall be the average of the job measurements as specified above but within 1/4 inch of the thickness indicated.

3.13 MAINTENANCE: The stabilized-aggregate base course shall be maintained in a satisfactory condition until accepted. Areas of stabilized-aggregate base course damaged by freezing, rainfall or other weather conditions shall be corrected to meet specified requirements.

END OF SECTION

For Information Only Q&A - 1

QUESTIONS AND ANSWERS

W9128F-09-B-0013

REPAIR RUNWAYS 29 END AND 11 END

MINOT AFB, NORTH DAKOTA

1. Will a contractor be able to utilize the North Gate for any hauling of materials to and from the airfield or does all materials strictly have to come through the gate near the OPA as the drawings show?

A: Access per requirements shown on drawings. There will be no North gate access.

2. Will the trucks traveling to the work zones need to perform FOD checks when driving on the taxiways?

A: The Contractor is responsible for ensuring removal of debris both on runway and haul routes. See section 01 30 00.24, paragraph 1.8.

Details of Foreign Object Debris (FOD) checks will be coordinated with the COR after award of the Contract.

3. Will a contractor be able to store aggregate and/or a batch plant in the staging area during the winter exclusion?

A: No. Section 01 30 00.24, Page 4, paragraph 1.6 a. will be revised by amendment. “No construction materials or equipment will be permitted to be stored in the staging area or flight line during the winter exclusion period.”

4. Can a contractor use the Stabilized Aggregate Base Course (Spec.

Sec.02602) which has been used widely on the base in the past instead of the Graded Crushed Aggregate Base Course For Flexible Pavement (Spec. Sec. 02722)? The reason is because we are working with a small, unknown quantity and to produce this material is going to be very expensive. Supplier's in the area all ready have the Spec. Sec. 02602 material made and can be used on an as need basis.

A: Yes, Section 02602 is added to project by amendment.

5. What end of the runway is going to be worked first?

A: Per Specification 01 30 00.24, 11 End will be completed first.