5-General Notes and Technical Specs Aggregate TY E 2025.docx

General Notes and Technical Specs

General Information

Williamson County is seeking qualified companies to provide Aggregates for Surface Treatments per Item 302, Texas Department of Transportation, Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges 2024.

Quantities shown are estimated quantities. The actual quantity purchased may be more or less. The County is not obligated to purchase any minimum amount, and the County may purchase any reasonable amount greater than the estimate for the same unit price. Items will be ordered on an “As Needed” basis.

Location is an important factor in evaluation of bids, due to transportation costs which must be taken into consideration. It is expected that the aggregate shall be delivered to 1400 NE Inner Loop, Georgetown, TX, 78626. Actual delivery site may be within 2-3 miles of listed address. Williamson County reserves the right to evaluate the bids with estimated County transportation costs incorporated into the bid for a total cost.

Williamson County reserves the right to award the bid in whole to one contractor or to award a contract on each separate item or combination of items as may be most advantageous to the County.

It is expressly understood and agreed that in case Williamson County should need any item(s) not available within the time frame needed from the successful vendor(s) during the term of this contract, the County reserves the right to purchase the item(s) vendors from other than the successful vendor(s) and shall not be in violation of any terms or conditions of said contract.

Provide three (3) references where like services have been performed by your firm. Include name of firm, address, telephone number and name of representative.

Definition of Terms

County: Williamson County Road and Bridge Division

Contractor: Successful bidder of the attached invitation to bid.

Engineer: Road & Bridge Division Director

Inspector: Employee of Williamson County supplied full time to the contractor's crew for the selection, prosecution, and quality control of the work. Should the work, as well as the geographical location, allow, the County may supply one foreman for multiple crews.

Specifications: Texas Department of Transportation Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges 2024.

Department: Road and Bridge Division

Control of Materials

Source Control. Use only materials that meet Contract requirements. Unless otherwise specified or approved, use new materials for the work. Secure the Engineer’s approval of the proposed source of materials to be used before their delivery. Materials can be approved at a supply source or staging area but may be re-inspected.

The Contractor shall submit the following test reports from an approved independent testing laboratory, providing the proposed materials compliance and adequacy.

Sieve Analysis: Tex-401-A Deleterious Material %: Tex-217-F, Part I Flakiness Index, Max: Tex-224-F Magnesium Sulfate Soundness, 5 Cycles, %, Max: Tex-411-A Los Angeles Abrasion, %, Max: Tex-410-A

Material Quality. Correct or remove materials that fail to meet the contract requirements, for cost incurred if additional sampling and testing is required by a change of source.

Materials not meeting Contract requirements will be rejected, unless the Engineer approves corrective actions. Upon rejection, immediately remove and replace rejected materials.

If the Contractor does not comply with this Article, the County may remove and replace defective material. The cost of testing, removal, and replacement will be deducted from invoice.

Manufacturer Warranties. Transfer to the County warranties and guarantees required by the Contract or received as part of normal trade practice.

Plant Inspection and Testing. The Engineer may but is not obligated to inspect materials at the acquisition or manufacturing source. Material samples will be obtained and tested for compliance with quality requirements. Materials produced under County inspection are for County use only unless released in writing by the Engineer.

If inspection is at the plant, meet the following conditions unless otherwise specified:

· Cooperate fully and assist the Engineer during the inspection

· Ensure the Engineer has full access to all parts of the plant used to manufacture or produce materials.

· In accordance with pertinent items and the Contract, provide a facility at the plant for use by the Engineer as an office or laboratory.

· Provide and maintain adequate safety measures and restroom facilities.

· Furnish and calibrate scales, measuring devices, and other necessary equipment.

The Engineer may provide inspection for periods other than daylight hours if:

· Continuous production of materials for County use is necessary due to the production volume being handled at the plant and

· The lighting is adequate to allow satisfactory inspection.

ITEM 302 – Aggregates for Surface Treatments

· TY E will be a traprock of various fine grained, dense, dark colored, igneous rock.

· Contractor to provide aggregate that has been washed at least once prior to stockpiling at the plant.

· In addition to meeting the decantation requirements, aggregate that is found to contain excess amounts of dust (0.5% passing the #40 sieve, Tex-200-F, Part II) during contractor’s stockpiling or hauling will be rejected.

The Specifications shall be amended by Special Provision below:

SPECIAL PROVISION

302---009 Aggregates for Surface Treatments

For this project, Item 302, “Aggregates for Surface Treatments,” of the Standard Specifications, is hereby amended with respect to the clauses cited below, and no other clauses or requirements of this Item are waived or changed hereby.

Article 302.2. Materials, Section A. Aggregate. Table 3 Los Angeles abrasion, % max, is revised with the following requirement:

Table 3 Aggregate Quality Requirements