Amendment W912GY-21-Q-0012-0001.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The Purpose of this Amendment Is:

1.Questions and Answ ers.

2. Full Text 52.219-14 Limitations of Subcontracting (MAR 2020).

3. Removed SOW Attachment 4 - SC HMA Division 400 and SOW Attachment 5 - SC HMA Division 300.

4. Revised SOW Section 2.4 Hot Mix Asphalt Material (see section changed in red).

5. Added SOW Attachment 4 - Caltrans - Hot Mix Asphalt.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 19

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

16C. DATE SIGNED

BY 26-Aug-2021

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912GY21Q0012

X 9B. DATED (SEE ITEM 11)

12-Aug-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

Offer 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 1 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 you 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 APPROPRIATION DATA (If required)

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

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

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.

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

26-Aug-2021

CODE

SIERRA ARMY DEPOT

CONTRACTING OFFICE

74 C STREET BUILDING 60

HERLONG CA 96113

W912GY 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912GY21Q0012

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

The following have been added by full text:

52.219-14 LIMITATIONS ON SUBCONTRACTING (MAR 2020)

(a) This clause does not apply to the unrestricted portion of a partial set-aside.

(b) Applicability. This clause applies only to--

(1) Contracts that have been set aside for small business concerns or 8(a) participants;

(2) Part or parts of a multiple-award contract that have been set aside for small business concerns or 8(a) participants;

(3) Orders set aside for small business concerns or 8(a) participants under multiple-award contracts as described in 8.405-5 and 16.505(b)(2)(i)(F); and

(4) Orders issued directly to small business concerns or 8(a) participants under multiple-award contracts as described in 19.504(c)(1)(ii).

(c) Limitations on subcontracting. By submission of an offer and execution of a contract, the Contractor agrees that in performance of the contract in the case of a contract for--

(1) Services (except construction). At least 50 percent of the cost of contract performance incurred for personnel shall be expended for employees of the concern.

(2) Supplies (other than procurement from a nonmanufacturer of such supplies). The concern shall perform work for at least 50 percent of the cost of manufacturing the supplies, not including the cost of materials.

(3) General construction. The concern will perform at least 15 percent of the cost of the contract, not including the cost of materials, with its own employees.

(4) Construction by special trade contractors. The concern will perform at least 25 percent of the cost of the contract, not including the cost of materials, with its own employees.

(d) The Contractor shall comply with the limitations on subcontracting as follows:

(1) For contracts, in accordance with paragraph (b)(1) and (2) of this clause--

___ By the end of the base term of the contract and then by the end of each subsequent option period; or

X By the end of the performance period for each order issued under the contract.

(2) For orders, in accordance with paragraphs (b)(3) and (4) of this clause, by the end of the performance period for the order.

(End of clause)

The following have been modified:

LIST OF ATTACHMENTS

1. Attachment 1: Quote Sheet

2. Attachment 2: Past Performance Questionnaire

3. Attachment 3: Visitor Request Form

4. Attachment 4: Caltrans – SOW Hot Mix Asphalt

5. Attachment 5 - Questions & Answers - 26 August 2021

STATEMENT OF WORK

STATEMENT OF WORK

Aggregate of Various Sizes, Railroad Ballast, and Hot Mix Asphalt

26 August 2021

1.0 PART I – GENERAL:

GENERAL: This shall be an Indefinite Delivery, Indefinite Quantity (IDIQ) contract to deliver aggregate of various sizes, railroad ballast, and hot mix asphalt to several locations at SIAD. The contractor shall provide all labor, materials, equipment and supervision necessary to deliver the items listed below at SIERRA ARMY DEPOT (SIAD), Herlong, CA 96113. The products delivered under this contract shall be in accordance with the terms, conditions and specifications stated herein. Government employees shall not supervise or have influence over the contractor employees in the execution of this statement of work. All materials shall be delivered in bottom dumps unless otherwise specified prior to delivery by the Contracting Officer. Delivery locations are 7-10 miles from any entrance to Sierra Army Depot.

1.1 Minimum Requirements: All product delivered shall be within these specifications and in accordance with all Federal, State and local regulations and industry standards.

1.1.1 Location: Sierra Army Depot, Herlong, CA 96113-5000

1.1.2 Delivery locations are 7-10 miles from any entrance to Sierra Army Depot.

1.2 Scope of Work Items: Contractor shall furnish and deliver the following:

1.2.1 Hot-Mix Asphalt Material.

1.2.2 Class 2 road base aggregates: ¾ inch, 1 ½ inch, and 3 inch.

1.2.3 6 inch unwashed drain rock.

1.2.4 2 inch by 3 inch rail road ballast.

1.2.5 3/8 inch washed pea gravel.

1.2.6 3/8 inch washed chip rock.

1.2.7 Reserved.

1.2.8 Price shall include all testing, trucking time, to include travel time and standby time once on the Depot.

1.2.9 All minimum tonnage listed below is for the life of this contract. There are no yearly minimum orders.

1.2.10 Reserved.

1.3 Contractor will supply all labor and materials. Contractor shall commence deliveries within ten (10) days after receiving a delivery order and shall continue until completed unless otherwise stated per this Contract.

1.4 Applicable Documents & Acronyms:

1.4.1 SIAD Regulation 420-7 (Fire Prevention and Protection).

1.4.2 COE regulation 385-1-1 (Safety) and CESPK PAM 415-1-2 Construction Control Manual, Sampling & Testing Construction Materials.

1.4.3 All local, state and federal laws, codes and regulations.

1.4.4 UFC 3-600-01, 4-010-01 & & 3-420-01 Codes.

1.4.5 NFPA Fire Codes.

AFARS Army Federal Acquisition Regulation Supplement AR Army Regulation ASTM American Society for Testing and Materials CCE Contracting Center of Excellence CFR Code of Federal Regulations CONUS Continental United States (excludes Alaska and Hawaii) COR Contracting Officer’s Representative COTS Commercial-Off-the-Shelf DA Department of the Army DD250 Department of Defense Form 250 (Receiving Report) DD254 Department of Defense Contract Security Requirement List DFARS Defense Federal Acquisition Regulation Supplement DOD Department of Defense FAR Federal Acquisition Regulation

IDIQ Indefinite Delivery, Indefinite Quantity KO Contracting Officer OCI Organizational Conflict of Interest OCONUS Outside Continental United States (includes Alaska and Hawaii) ODC Other Direct Costs POC Point of Contact PRS Performance Requirements Summary QA Quality Assurance QAP Quality Assurance Program QASP Quality Assurance Surveillance Plan QC Quality Control QCP Quality Control Program SIAD Sierra Army Depot SOW Statement of Work TE Technical Exhibit

1.5 Material Approval: All materials shall be approved by the Technical POC prior to delivery. Samples and /or laboratory reports shall be the basis of approval of specific sources or stockpiles of aggregates. Sieve and Plasticity testing will be performed every 7,500 tons delivered. Testing shall be completed by a third party.

1.6 Submittals:

1.6.1 Timeline Plan: Complete delivery schedule/plan. The plan shall be updated weekly based on quantities delivered and a copy presented to the Technical POC.

1.6.2 Sieve Analysis: Contractor shall present Sieve analysis by third party testing to the Technical POC prior to deliveries.

1.7 Pre-Commencement Meeting: Prior to the commencement of work, a meeting will be held with the Contractor and the Government Representatives to discuss matters of mutual interest concerning the contract. General conditions, work schedules, security, safety, depot siren, operations during lightning/thunderstorm, character of work, housekeeping and clean-up, days of work, fire prevention, smoking areas, accidents, local rules and regulations, delays, quality assurance, inspections, hazardous waste, debris disposal and other matters pertinent to work accomplishments will be discussed at this time. At this time the Contractor shall submit their Safety and Quality assurance plans, forecasted Gantt chart time line plan and other submittals.

1.8 Drawings: N/A.

1.9 Point of Contact (POC): The Technical Point of Contact (TPOC) for this action will be Mr. Douglas Vittitow (530) 827-4758, email: douglas.r.vittitow.civ@mail.mil.

Deliveries will be verified by designated Government official via bill of lading and weight tickets.

1.10 Work Coordination: All deliveries shall be coordinated with the TPOC.

1.11 Work Commencement: Contractor shall commence deliveries within 10 days, after receiving a written delivery order and shall continue until completed. This may change for the convenience of the Government and after notification to the Contractor.

1.12 Smoking Areas: Smoking will be permitted only at locations designated by the

TPOC.

1.13 Safety:

1.13.1 Regulations: All installation safety regulations shall be followed. Contractor shall submit a Safety Plan within 7 days of award.

1.13.2 Signage: None required.

1.13.3 Work Area Closures: The work areas shall be closed off to unauthorized personnel.

1.13.4 Accidents: All accidents shall be reported to the Safety Office through the TPOC. This is to be accomplished within the same shift, preferably as soon after the accident as is practical. An Occupational Safety and Health Administration (OSHA) Form 101 shall be submitted within three (3) working days after the accident. In the event of serious injury or damage, work will stop and everything will be left in place exactly as it was at the time of the accident, excepting when the possibility of more damage or injury exists.

1.14 Housekeeping and Cleanup: The Contractor shall leave all delivery areas in a neat, clean and workmanlike condition satisfactory to the TPOC. After delivery the entire order, the Contractor shall remove from the premises all tools, equipment, and materials.

1.15 Unscheduled Interruptions: Work operations are subject to unscheduled interruptions and contractor personnel may be required to immediately leave the designated work area or be denied access due to security operations. All incomplete deliveries shall be rescheduled for a later time/date mutually agreed upon by the TPOC, QA personnel and Contractor (See 1.19 Delays).

1.16 Working Area Verification: The Contractor shall be responsible for the coordination and proper relationship of this work to the building premises, and be thoroughly familiarized with all details of the Scope of Work and working conditions, to verify all delivery locations in the field, and advise the TPOC of any discrepancies before unloading.

1.17 Quality Assurance: While performing this work the Contractor shall be subject to on-site inspections by the TPOC and QA personnel. The Contractor shall provide a manager to conduct and oversee daily delivery QA and safety issues if any work is found to be in violation of a specification requirement, the Contracting Officer shall issue a stop work order until the violation is resolved. Standby time and expenses required in resolving the violation shall be at the contractor’s expense.

1.17.1 There shall be announced and unannounced spot checks.

1.17.2 QA visual observations may be performed by the TPOC and QA personnel.

1.17.3 Evaluation of customer’s complaints and/or comments shall be reviewed by the

TPOC.

1.17.4 Communication with users (persons requesting the project) shall be done through the TPOC.

1.18 Reserved

1.19 Delays: The Government is not liable for any delay caused by the occupant, security inspections at any entrance gates or any security measures imposed by the Installation Commander and/or higher authority.

1.20 Damages: The Contractor shall be responsible for repairing damage caused during deliveries. Any damages incurred as a result of Contractor’s actions shall be repaired to original condition or replaced at no additional cost to the Government.

1.21 Materials and Equipment Stored on Depot: The Government shall not assume any responsibility for the security or protection of any materials or equipment stored on SIAD by the Contractor.

1.22 Environmental Notification: Contractor shall comply with the following Environmental Sections.

Sec. 1- Compliance with Environmental Laws and Regulations:

Contractor shall comply with all applicable federal, state, and local environmental laws, statutes, regulations, executive orders, permits, Army regulations (with supplements), as well as Major Subordinate Command (MSC) and Sierra Army Depot (SIAD) regulation, policy, Host Tenant Agreement, Interagency Service Support Agreement, or Status-of-Forces Agreement. Contractor shall immediately report any conflicts between applicable federal, state, local environmental laws, statutes, executive orders, and provisions of Army Regulation 200-1, and any specifications within this contract to the Technical Point of Contact (TPOC).

Sec. 2 - Compliance with Green Procurement Requirements:

Contractor shall follow Federal EPA Comprehensive Procurement guidelines (www.epa.gov/cpg) and Army Contracting Command Quick Guide (https://acc.aep.army.mil/accapps/ACCMAP/Documents/Quick-Guide-for-Sustainable- Procurement.docx) for acquisition of building materials and products and select materials that have a long life cycle; the least toxic materials; recyclable materials;

materials that are resource-efficient; materials with the maximum recycled content;

materials harvested on a sustained yield basis; and products causing the least pollution during their manufacture, use, and reuse.

Sec. 3 - Compliance with License and Certification Requirements:

Contractor shall obtain all license and certification required by Federal, State, and Local environmental laws and regulations necessary to adhere to the specifications of this contract. The Contractor shall submit all plans, notifications, reports, submittal documents, and fees required by Federal, State, and Local environmental laws and regulations to the appropriate Federal, State, and Local authority and/or agency as necessary to adhere to the specification of this contract. All required licenses and certifications required by Federal, State, and Local environmental laws and/or regulations shall be considered a contract deliverable upon award.

Sec. 4 - Notification of Federal and State Regulators:

Contractor shall immediately notify the Designated Government Representative (DGR) of the arrival on site of any Federal, State, local and/or DoD environmental regulator or enforcement agent and/or the receipt of any correspondence from above mentioned environmental regulatory agencies.

Sec. 5 - Inspections of Work Sites:

Contractor shall submit to potential Federal, State, Local, Army and installation work site environmental regulatory inspections and/or investigations into noncompliance, and fully cooperate with such inspections/investigations by providing the appropriate records and documentation. Environmental regulatory agencies are authorized by law to inspect any work site for environmental compliance with regulatory requirements. If an inspection is conducted, it will not stop or disrupt ongoing contract activities. The inspection will only require the work site environmental officer, or supervisor/manager to answer questions and/or escort the inspector to specific work site areas with the potential to affect environmental quality.

Sec. 13. - Use of Hazardous Materials: N/A on this project.

Contractor shall assign all hazardous materials management responsibilities to the appointed ECD or designated personnel. Contractor shall contact the DGR to obtain technical assistance from Environmental Office for assisting the ECD with achieving and maintaining compliance with hazardous material storage, issue, use, and disposal requirements. Contractor shall submit to the DGR a hazardous material inventory. The hazardous material inventory will be submitted 30 days prior to commencement of work for contracts that exceed 180 consecutive days. The inventory list will contain the hazardous material type and maximum quantities of materials anticipated to be stored on-site. The hazardous material shall be properly identified and include any applicable identification number, such as National Stock Number or Special Item Number. The Contractor shall maintain copies of Safety Data Sheets for all hazardous materials used and stored on-site during performance of the contract. Contractor shall not supply or deliver any hazardous materials or chemicals to an installation that are listed on EPA toxic chemical list (33/50 Program - AKA 17 List) without prior written approval from

DGR.

*****Last Environmental Section*****

1.23 Dimensions: Not required.

1.24 Contract Additions and Deletions: The Government reserves the right to add or delete items from the contract, subject to their change in use. Resulting contract price adjustments will be negotiated based upon costs in place at that time and are identical per contract performance period. The Contracting Officer is the only person that can make any changes (scope, costs or time) to the contract. Any changes made will be effective only after both the Contractor and the Government sign the revised contract.

1.25 Insurance: Contractor shall carry general liability and workers compensation as indicated by FAR 52.228-5 (Insurance Work on a Government Installation) and provide to the Contracting Officer to include certificate of liability insurance within 7 days of contract award.

2.0 PART II - PRODUCTS:

2.1 Contractor Supplied Materials: The Contractor shall supply industry standard domestic approved materials, as per supplied specifications.

2.2 Minimum Requirements: All materials delivered shall be per code (1.4), as per specifications. All products shall be in conformance with the Buy in America Act, unless otherwise authorized by the TPOC.

2.2.1 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

2.2.1.1 ASTM C 29 (1991a) Unit Weight and Voids in Aggregate

2.2.1.2 ASTM C 88 (1990) Soundness of Aggregates by use of Sodium Sulfate or

2.2.1.3 Magnesium Sulfate

2.2.1.4 ASTM C 117 (1990) Materials Finer than 75-micrometer (No 200) Sieve in

2.2.1.5 Mineral Aggregates by Washing

2.2.1.6 ASTM C 127 (1988) Specific Gravity and Absorption of Coarse Aggregates

2.2.1.7 ASTM C 128 (1988) Specific Gravity and Absorption of Fine Aggregate

2.2.1.8 ASTM C 131 (1989) Resistance to Degradation of Small-size Coarse

2.2.1.9 Aggregate by Abrasion and Impact in the Los Angeles Machine

2.2.1.10 ASTM C 136 (1984a) Sieve Analysis of Fine and Coarse Aggregates

2.2.1.11 ASTM C 183 (1988) Sampling and the Amount of Testing of Hydraulic Cement

2.2.1.12 ASTM D 5 (1986) Penetration of Bituminous Materials

2.2.1.13 ASTM D 75 (1987) Sampling Aggregates

2.2.1.14 ASTM D 140 (1988) Sampling Bituminous Materials

2.2.1.15 ASTM D 242 (1985) Mineral Filler for Bituminous Paving Mixtures

2.2.1.16 ASTM D 422 (1963; R 1990) Particle –size Analysis of Soils

2.2.1.17 ASTM D 946 (1982) Penetration-graded Asphalt Cement for use in Pavement

Construction

2.2.1.18 ASTM D 1250 (1980; R 1990) Petroleum Measurement Tables

2.2.1.19 ASTM D 1856 (1979; R 1984) Recovery of Asphalt from Solution by Abson Method

2.2.1.20 ASTM D 2041 (1991) Theoretical Maximum Specific Gravity and Density of

Bituminous Paving Material

2.2.1.21 ASTM D 2172 (1992) Quantitative Extraction of Bitumen from Bituminous Paving Mixtures

2.2.1.22 ASTM D 2216 (1990) Laboratory Determination of Water (Moisture) Content of Soil and Rock

2.2.1.23 ASTM D 3381 (1983) Viscosity-graded Asphalt Cement for use in Pavement Construction

2.2.1.24 ASTM D 3515 (1989) Hot-mixed, Hot-laid Bituminous Paving Mixtures

2.2.1.25 ASTM D 4791 (1989) Flat or Elongated Particles in Coarse Aggregate

2.3 Wilson #4 AREMA 2"x3” Railroad Ballast:

2.3.1 Wilson #4 AREMA 2"x3” Railroad Ballast is a clean, 100% crushed granite. This

Ballast meets the American Railway Engineering and Mining Association (AREMA) #4 Ballast Specifications as well as ASTM C-33 Size #4. This product has been used by the Railroad as Ballast Aggregate since the late 1800’s. This type of rock is typically gray in color.

2.3.2 ASTM Properties

L.A. Rattler in accordance w/ ASTM C535 27% Specific Gravity 2.82 Sodium Sulfate Loss in accordance w/ ASTM C88 4.8% Unit Weight 100.7 lb / pcf

2.3.3 Sieve Analysis

Inches MM/UM Grading* AREMA #4 (1986)

2" 50 mm 100 100

1-1/2" 37.5 mm 93 90 - 100

1" 25 mm 47 20 - 55

3/4" 19 mm 11 0 - 15

1/2" 12.5 mm -- --

3/8" 9.5 mm 4 0 - 5

1/4" 6.3 mm -- --

#4 4.75 mm 2 --

#200 75 um .5 0 - 1

2.4 Hot-Mix Asphalt Material (HMA) Properties:

2.4.1 California Department of Transportation (Caltrans) Standard Specifications

(2018) Use the following specifications for preparing, constructing, and accepting Hot- Mix Asphalt (HMA) material properties. NOTE: Refer to Attachment 4 – Caltrans – SOW Hot Mix Asphalt, Section 39 Asphalt Concrete, pages 548 through 549.

Hot Mix Asphalt Mix Design Requirements

Quality Characteristics Test method Requirement

Film thickness (min, μm)

Asphalt Institute MS-2 Table 8.1 a

Drain down (max, %) AASHTO T 305 b 0.1 a Film thickness is calculated based on the effective asphalt content and determined as follows:

FT = ( Pbe ) 10 to 6th power

SA x Gb x 1000 b Combine aggregate and asphalt at the asphalt binder supplier's instructed mixing temperature. Coated aggregates that fall through the wire basket during loading must be returned to the basket before conditioning at 350 °F for 1 hour.

The OBC must be greater than 4.9 percent by total weight of mix.

2.4.2 Per Caltrans 39-2.05B(2)(d) Aggregates

The aggregates must comply with the requirements shown in the following table:

Aggregate Quality

Quality characteristic Test method Requirement Percent of crushed particles Coarse aggregate (min, %) One-fractured face

Two-fractured faces Fine aggregate (min, %)

(Passing No. 4 sieve and retained on No. 8 sieve.)

One-fractured face

AASHTO T 335

Los Angeles Rattler (max, %) Loss at 100 Rev.

Loss at 500 Rev.

AASHTO T 96

Sand equivalent (min)a AASHTO T 176 47

Flat and elongated particles (max, % by weight @ 5:1) ASTM D4791 25 Fine aggregate angularity (min, %) AASHTO T 304, Method A 45 aReported value must be the average of 3 tests from a single sample. The use of a sand reading indicator is required as shown in AASHTO T 176, Figure 1. Sections 4.7, "Manual Shaker," 7.1.2, "Alternate Method No. 2," and 8.4.3, "Hand Method," do not apply. Prepare the stock solution as specified in section 4.8.1, "Stock solution with formaldehyde," except omit the addition of formaldehyde.

The aggregate gradations for BWC-G must comply with the requirements shown in the following table:

Aggregate Gradation Requirements

BWC-G pavement thickness shown Gradation less than 0.08 foot No. 4 or 3/8 inch

0.08 foot or greater 1/2 inch

The proposed aggregate gradation must be within the TV limits for the specified sieve sizes shown in the following tables:

Aggregate Gradations for BWC-G (Percentage Passing)

½ inch

Sieve size Target value limit Allowable tolerance 3/4" 100 --

1/2" 80–100 TV ± 6

3/8" 55–80 TV ± 6

No. 4 25–40 TV ± 7 No. 8 19–32 TV ± 5 No. 16 16–22 TV ± 5 No. 30 10–18 TV ± 4 No. 50 8–13 TV ± 4

No. 100 6–10 TV ± 2 No. 200 4.0–7.0 TV ± 2.0

3/8 inch

1/2" 100 --

3/8" 80–100 TV ± 6

No. 4 25–40 TV ± 7 No. 8 19–32 TV ± 5 No. 16 16–22 TV ± 5 No. 30 10–18 TV ± 4 No. 50 8–13 TV ± 4

No. 100 7–11 TV ± 2 No. 200 6.0–10.0 TV ± 2.0

No. 4

1/2" 100 --

3/8" 95–100 TV ± 2

No. 4 42–55 TV ± 7 No. 8 19–32 TV ± 5 No. 16 16–22 TV ± 5 No. 30 10–18 TV ± 4 No. 50 8–13 TV ± 4

No. 100 7–11 TV ± 2 No. 200 6.0–10.0 TV ± 2.0

2.5 (Class 2) ¾” Unwashed Concrete aggregate: 3/4inch aggregate shall be well graded and compactable to 90% relative density. The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. Aggregate shall conform to the gradations shown above in 2.1. Minimum order shall be 7,500 tons with a maximum order not to exceed 30,000 tons.

2.6 (Class 2) 1 ½” Unwashed Concrete aggregate: 1 1/2inch aggregate shall be well graded and compactable to 90% relative density. The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. Aggregate shall conform to the gradations shown above in 2.1. Minimum order shall be 7,500 tons with a maximum order not to exceed 40,000 tons.

2.7 (Class 2) 3” aggregate base: 3inch aggregate shall be well graded and compactable to 90% relative density. The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. 3inch aggregate shall conform to gradations shown above in 2.1. Minimum order shall be 7,500 tons with a maximum order not to exceed 45,000 tons.

2.8 (Class 2) 6” Unwashed Drain rock: 6inch fractured drain rock aggregate. The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. Aggregate shall conform to the gradations shown above in 2.1. Minimum order shall be 2,500 tons with a maximum order not to exceed 4,000 tons.

2.9 (Rail Road Ballast) 2” by 3” ballast: 2inch by 3inch rail road ballast. The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. Shall conform to the gradations shown in shown above in 2.3.

Minimum order shall be 50 tons with a maximum order not to exceed 10,000 tons.

2.10 (Asphalt Hot Mix) The material shall pass a visual site inspection throughout the deliveries as well as an initial sample approval for acceptance. Shall conform to the gradations shown above in 2.4. Minimum order shall be 25 tons with a maximum order not to exceed 10,000 tons.

2.11 Course Aggregates: Course aggregates consisting of angular fragment of uniform density and quality shall have a percentage of wear not to exceed 50 percent after 500 revolutions when tested in accordance with ASTM 131. 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 3, and an elongated particle is one having a ratio of length to width greater than 3.

2.11.1 Crushed Gravel: Crushed gravel shall be manufactured from gravel particles 50 percent of which by weight are retained on the maximum size gradation specified.

2.11.2 Crushed Stone: Crushed stone retained on each sieve specified shall contain at least 50 percent by weight of crushed pieces having two or more freshly fractured faces with the area of each face being at least equal to 75 percent of the smallest mid sectional 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 the fractured faces.

2.11.3 Binder Material: Binder material shall consist of screenings, angular sand, or other finely divided mineral matter processed of naturally combined with course aggregate. Liquid limit and plasticity index requirements shall apply to any component that is blended to meet the required gradation and shall also apply to the completed course. The portion of any component or of the completed course passing the No. 40 sieve shall be either non-plastic or have a liquid limit not greater than 25 and a plasticity index not greater than 8.

2.11.4 Liquid Limit and Plasticity Index: Liquid limit and plasticity index requirements stated herein shall apply to any aggregate component that is blended to meet the requirement and also to the aggregate in the completed base course. The portion of the aggregate passing the No. 40 sieve shall be either non-plastic or have a liquid limit not greater than 25 and plasticity index less than 8.

2.12 3/8 Washed Pea Gravel: 12 tons minimum and 50 tons maximum.

2.12.1 85-100% at 3/8”

2.12.2 < 20% at Maximum size 1/2”

2.12.3 < 20% at Minimum size 1/4”

2.12.4 Washed

2.12.5 Typical weight 1.5 tons per cubic yard

2.13 3/8 Washed Chip Rock: 12 tons minimum and 50 tons maximum.

2.13.1 85-100% at 3/8”

2.13.2 < 20% at Maximum size 1/2”

2.13.3 <20% at Minimum size: 1/4”

2.13.4 Washed

2.13.5 Typical weight 1.4 tons per cubic yard

2.14 Government Supplied Materials: There are no Government-supplied materials.

3.0 SAMPLING AND TESTING:

3.1 Aggregates General: During production and prior to delivery, sieve analysis testing and laboratory report identifying the proposed aggregates contents and resistance to loading (R-value) shall be submitted along with each contractor bid.

Samples and/or laboratory reports shall be the basis of approval of specific sources or stockpiles of aggregates for the aggregate requirements. Sieve and Plasticity testing will be performed every 7,500 tons delivered. (If test results are found to be non-compliant daily test will be performed for every 200 tons until compliance is regained and results are approved by POC). Testing shall be completed by a third party for every 7,500 tons delivered.

3.2 Sources: Sources of aggregates shall be selected well in advance of the time the materials are required to be delivered. The Contracting Officer shall direct the contractor to make appropriate test and other investigation as necessary to determine whether aggregates meeting requirements specified herein can be produced from proposed sources. If a sample of material from a new source fails to meet specification requirements, the material represented by the sample shall be replaced and the cost of testing the replaced sample shall be at the expense of the contractor. Approval of the source of the aggregate does not relieve the contractor of the responsibility for delivery at the job site of aggregates that meet the requirements specified herein.

3.3 Aggregate Base: All aggregates shall be clean and free from decomposed materials, organic material and other deleterious substances and shall be of such a nature that it can be compacted readily under water and rolling to form a firm stable base. Course aggregate is materials retained on the No. 4 sieve; fine aggregate is material passing the No. 4 sieve; and supplemental fine aggregate is added fine material passing the No. 30 sieve. Unless otherwise specified in the special provisions, the aggregate grading shall conform to the following:

Type-----------Grading Class 2---------3/4 inch aggregate base

AGGREGATE GRADING REQUIREMENTS

Percentage Passing and Retained

Limits of

Proposed Operating Contract Sieve Sizes Gradation Range Compliance 2”---------------------------- --- --- 1-1/2”----------------------- --- --- 1”---------------------------- 100 100 ¾”-------------------------- 90-100 87-100 No. 4 ----------------------- 35-60 30-60 No. 30 --------------------- 10-30 5-35 No. 200--------------------- 2-9 0-12

Quality Requirements Contract Compliance

Resistance (R-value)--------------------------------------------78 min.

Durability Index--------------------------------------------------35 min.

Class 2---------1 1/2 inch aggregate base

Durability Index-------------------------------------------------- 35 min.

Class 2---------3 inch aggregate base

Sieve Sizes

Proposed Gradation

Limits of Operating Range

Contract Compliance

3” -------------------------- 100 100 2 ½” ----------------------- 90-100 90-100 1-1/2”---------------------- --- ---

Durability Index-------------------------------------------------- 35 min.

1”--------------------------- --- --- ¾”-------------------------- --- --- 3/8” ------------------------ --- --- No. 4 ---------------------- 40-90 35-90 No. 8 ----------------------- --- --- No. 30 --------------------- --- --- No. 200--------------------- 0-25 0-29

Sieve Sizes

Proposed Gradation

Limits of Operating Range

Contract Compliance

1-1/2”----------------------- 100 87-100 1”---------------------------- 90-100 87-100 ¾”-------------------------- --- --- 3/8” ------------------------ 35-60 30-60 No. 4 ---------------------- --- --- No. 8 ----------------------- 10-30 5-35 No. 30 --------------------- --- --- No. 200--------------------- 2-9 0-12

The aggregate shall not be with lime, cement or other chemical materials before the Durability Index test is performed.

If the results of the aggregate grading tests do not meet the requirements specified for “Operating Range” but meet the “Contract Compliance” requirements, placement of the aggregate base may be continued for four (4) hours or the rest of the day, whichever is the shortest duration. However, another day’s work may not be started until tests, or other information, indicate that the mixture meets the proper operating range.

6 inch fractured drain rock

Vendor will supply a letter validating the correct size of drain rock aggregate. The POC will approve all drain rock aggregate sizes thru a visual inspection.

3.4 Water Content of Aggregate: Aggregate being delivered shall not have a moisture content that exceeds 5-7 percent.

4.0 PART III - EXECUTION:

4.1 Performance Notification: The Contractor or their manager shall provide the TPOC a Weekly Project Report to verify the delivery status, time delays, percent of overall completion, adjusted completion date and any other issues directly related to the completion of each order. The information will be compared to the submitted Contractor’s schedule. Upon completion a Gantt chart shall be provided showing the original performance time line verses the actual time line concurrently under one another.

4.2 Delivery: Contractor shall deliver materials in bottom dumps unless otherwise specified prior to delivery by the Contracting Officer. All materials shall be wind rowed as directed by crews working on site. If other work at SIAD precludes the windrowing then mineral aggregates shall be delivered to the contractor site and stockpiled in such a manner as to preclude fracturing of aggregate particles, segregation, contamination, or intermingling of different materials in the stockpiles. The route of delivery shall be determined upon the source selected. Delivery coordination through SIAD Security must take place a minimum of 48 business hours in advance by calling (530) 827-4345.

Delivery through Sierra Army Depot back gate will be allowed and will begin approximately 30 days after contract award. Delivery days will be Monday – Thursday.

The daily delivery quantity and delivery days may be adjusted by the Government based on its ability to work the rock as it is delivered. These adjustments will only be done by the Government.

4.3 Completion: The Contractor shall contact the TPOC upon completion of each delivery order to review all waybills and delivery tickets and validate quantities delivered.

4.4 Waybills and Delivery Tickets: Before the final statement is allowed the contractor shall file with the Contracting Officer certified waybills and certified delivery tickets for all aggregate actually delivered. Delivery Waybills shall be provided to the POC or his designated alternate load by load.

(End of Summary of Changes)