Intent to SS-keystone engineering

The South Carolina Department of Transportation (SCDOT) is pursuing a sole source procurement for a Keystone Engineering Flatliner Precision Grinding Attachment for use in District Six. The procurement specifically targets a skid-steer mounted device designed to perform precision grinding on asphalt and concrete pavement at multiple locations. The attachment's unique capabilities include 100% grinding tooth coverage, functioning simultaneously as a profilograph and bump grinder, which enables leveling of pavement irregularities at high-profile locations. Keystone Engineering will supply the attachment, provide replacement teeth, and conduct training for agency mechanics and operators upon initial delivery. The procurement was authorized by Madeleine Hendry, Acting Deputy Secretary for Finance and Administration, with the justification based on market research confirming this is the only precision grinding attachment meeting SCDOT's specific requirements. The due date for this procurement is April 3, 2023, with the intent to procure notice originally posted on November 18, 2025.

The procurement appears to be unrestricted in terms of set-aside designations or enterprise restrictions. If the procurement value exceeds $50,000, the vendor must provide Drug-free Workplace certification. While a specific budget range is not explicitly stated, the procurement represents a strategic investment in pavement maintenance technology that SCDOT determined is more economical than full-depth patching at target locations. The proposed solution was previously coordinated between District Six Maintenance and the Director of Materials office. Keystone Engineering is positioned as the sole source vendor for this specific equipment, indicating a unique technological solution that cannot be readily replicated by other manufacturers. The procurement covers not only the equipment but also includes provisions for ongoing support through replacement parts and operator training, suggesting a comprehensive approach to equipment acquisition and implementation.