Agency TRANSPORTATION DEPT

Contractor AYRES ASSOCIATES

SWIFT Contract Number 3000020577

Project Name Matrix Riprap Implementation MPR-1(004)

Project Number (if applicable) 99136

Summarize purpose of the contract, including why it was necessary: Matrix riprap (aka Partially Grouted Riprap) is a relatively new scour countermeasure technique in the US. Construction specifications have been developed for use in Minnesota; however implementation has been a challenge due to lack of expertise. The Consultant selected for this project will provide training for Mn/DOT personnel in the basic design and installation of Matrix Riprap on bridge abutments. In addition, the Consultant will provide technical guidance and supervision during installation of the Matrix Riprap at a preselected bridge site in District 3. Once installation is complete the Consultant will provide a white paper/manual and comments that will be used to revise the Matrix Riprap special provision and design details.

Project Duration

Start Date Wed, 12/14/2011 - 00:00

Original end date Wed, 07/31/2013 - 00:00

Actual end date Fri, 06/28/2013 - 00:00

Did project finish on time? Yes

Total billable hours utilized (if applicable) {Empty}

Contract Amounts

Original contract: $27085.00

Amendments {Empty}

Contract total $27074.88

Did project finish within budget? Yes

What was the funding source? Federal and SRP

Is this a sole source contract? Yes

If this was a single source contract, explain why the agency determined there was only a single source for the services (if applicable) Ayres Associates is the only consultant with expertise in Matrix Riprap technology. Only two construction projects in
the US have used Matrix Riprap in compliance with the FHWA's national design guideline, and both were designed
and installed by Ayres Associates. In addition, Paul Clopper of Ayres Associates wrote the FHW A's national design
guideline for pier protection using Matrix Riprap, Hydraulic Engineering Circular No. 23 (HEC-23). Ayers Associates
is the only cor.tractor with demonstrated expertise to customize a design and write an installation guideline for Matrix
Riprap Abutment Protection in the state of Minnesota.

Evaluator Name Danielson-Bartelt, Nicole

Evaluator Email Address Nicole.Danielson-Bartelt@state.mn.us

Evaluate the contractor's timeliness Very Satisfied

Evaluate the contractor's quality Very Satisfied

Evaluate the contractor's cost Appropriate for the services provided

Evaluate the contractor's overall performance Paul Clopper was very responsive and performed the contract duties at or above my expectations for this contract. The deliverables provided were of high quality, and easy to use and distribute. We anticipate using the results from this implementation study immediately. Very satisfied with the contractor’s performance.

Would you engage the contractor's services again? Yes

Describe any negative action taken during the duration of this contract (i.e., termination, pursuit of suspension, etc.): {Empty}

Please rate the overall experience with the contractor 5 - very satisfied