Ron Bumann Construction Practices Specialist State Aid for Local Transportation 1123 Mesaba Avenue Duluth, MN cell: 218/ html

Mn/DOT AUDIT STATE AID FOR LOCAL TRANSPORTATION DIVISION FISCAL YEAR 2010 SINGLE AUDIT

11 City/County Projects Audited Fiscal Year 2010 St. Louis County $1,895,908 Cook County $3,159,060 Kittson County $809,842 Kittson County $774,234 City of St. Michael $2,153,763 City of Moorhead $17,720,630 Traverse County $1,441,828 Goodhue County $2,996,740 Steele County $3,875,394 Martin County $2,443,450 City of Richfield $25,224,918 City/County Project Total $62,495,767

FINDING 1 – ADDITIONAL PROJECT MANAGEMENT ATTENTION NEEDED TO ATTAIN COMPLIANCE WITH MATERIALS CONTROL REQUIREMENTS FOR BRIDGE CONCRETE AND STEEL Certified Mill Test Reports were not obtained for 18% of the bridge structural steel valued at $4.8 million. Monthly concrete aggregate quality testing not done. Material passing the #200 sieve for coarse aggregate testing, required as part of aggregate quality testing, was not done. Slump tests not taken after corrective action. Project personnel missed concrete admixture testing for the air entraining agent and water reducer.

After receiving written instruction to ensure that the concrete was properly mixed, the Contractor continued to place concrete into the roadway that was not properly mixed. All 4 Quality Assurance (QA) tests for material passing the #200 sieve for coarse aggregate did not meet requirements, with results ranging from 1.08 to 2.39 percent compared to the standard of 1.0 percent. All 4 Contractor Quality Control (QC) tests met requirements. Acceptance is based on QA results. Project personnel did not perform additional Quality Assurance (QA) testing required to verify corrective action taken. Project management was unaware of the tests not meeting requirements of which was identified by the audit. Cores for thickness not taken FINDING II – NEED TO IMPROVE COMPLIANCE WITH MATERIALS CONTROL REQUIREMENTS FOR PAVING CONCRETE

Questioned costs totaled $1.3 million, a significant improvement over the Fiscal Year 2009 Grading and Base Materials Control questioned costs total of $9.9 million. However, the Audit Report recommends taking appropriate action as necessary to hold responsible personnel accountable. Bitumen Content – Sample and test prior to placement. Quality Assurance Gradations – Review the Random Sampling Gradation Acceptance Method. Moisture Content – Requirement of Quality Compaction, unless modified in the special provisions. Grading & Base Reports are required to be submitted to the Grading and Base Office. Review specifications for crushing requirements. FINDING III – IMPROVEMENTS NOTED FOR GRADING AND BASE MATERIALS CONTROL COMPLIANCE

Review the special provisions and Schedule of Materials Control for testing requirements. Review the special provisions and specifications placement requirements. FINDING IV – NEED TO COMPLY WITH MATERIALS CONTROL REQUIREMENTS FOR STABILIZED FULL DEPTH BITUMINOUS PAVEMENT RECLAMATION

Project personnel did not ensure that the Notification of Intent to Perform a Bridge Demolition was submitted to Minnesota Pollution Control Agency 10 days prior to the start of demolition as required. Project personnel used a Local Bridge Replacement Program Asbestos Screening Tool to assess asbestos for a bridge removal. The screening tool did not address other regulated materials, such as lead. The bridge materials included lead paint. 40 Code of Federal Regulations requires an inspection prior to demolition. Minnesota Rules Chapter requires the inspection to be performed by a person certified by the Minnesota Department of Health. These processes are required regardless of funding types. Proper documentation of disposition of materials is crucial to the requirements. FINDING V – BRIDGE AND BUILDING REQUIREMENTS WERE NOT MET

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% Density (2) SP Wear, and SP Shoulder (4% Void) % Density (2) SP Non-Wear, SP Shoulder (3% Void) Mat Density Pay Factor A Traffic Level 2 & 3 Traffic Level 4 & and above94.6 and above1.03 (3) 1.05 (3) 93.1 – – (3) 1.04 (3) Less than 89.0Less than 90.0 (4) DRAFT / NEW Table B4 Payment Schedule for Maximum Mat Density

% Density (2) Long. Joint (Confined Edge) LJ Pay Factor B (Confined Edge) % Density (2) Long. Joint (Unsupported Edge) LJ Pay Factor C (Unsupported Edge) Traffic Level 2 & 3 Traffic Level 4 & 5 Traffic Level 2 & 3 Traffic Level 4 & and above1.02 (3) 1.03 (3) 91.0 and above 1.02 (3) 1.03 (3) (3) 1.02 (3) (3) 1.02 (3) Less than Less than DRAFT / NEW Table B4a LJ (5) Payment Schedule for Longitudinal Joint Density (SP Wear and SP Shoulder (4% Void)

% Density (2) Long. Joint (Confined Edge) LJ Pay Factor A (Confined Edge) % Density (2) Long. Joint (Unsupported Edge) LJ Pay Factor B (Unsupported Edge) Traffic Level 2 & 3 Traffic Level 4 & 5 Traffic Level 2 & 3 Traffic Level 4 & and above1.02 (3) 1.03 (3) 92.0 and above 1.02 (3) 1.03 (3) (3) 1.02 (3) (3) 1.02 (3) Less than Less than DRAFT / NEW Table B4b LJ (5) Payment Schedule for Longitudinal Joint Density (SP Non-Wear and SP Shoulder (3% Void))

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