Healey Cost Breakdown — File 213081

ARTHUR D.HEALEY SCHOOLYARD, U-12 RECREATION FIELD, ADA RAMP AND STAIRS TO MYSTIC HOUSING - Additional Contaminated Soil Costs 2/1/22 ESTIMATE Funding: Bond FY22 Board Order No. 209483 6,000,000.00 $ COSTS TO DATE: LANDSCAPE DESIGN, CONSTRUCTION, LSP SERVICES, STOCKPILED SOIL REMOVAL* (5,746,328.00) $ AVAILABLE BALANCE 253,672.00 $ Estimate of Costs for removal of in-situ contaminated soils and related items Based on Pre-Chacterization Data obtained to date To be removed to out of state facility (based on elevated levels of Antimony) CONTAMINATED SOIL REMOVAL COST PROJECTIONS Levels of contamination of in-situ soils assumed to be similar to those previously excavated - but remain unknown Lower unit cost vs Contract Unit Cost 4800 cy/7200 Tons 4800 cy/7200 Tons Quantity Estimate: 4,800 cy or 7200 tons at $78.35/ton at $150/ton Cost per ton: $78.35 $78.35 564,120.00 $ 564,120.00 $ 1,080,000.00 $ Additional Costs: 1) Additional LSP costs $29,500 (proposed for upcoming WL amendment) 2) Additional LSP Services Soil Testing, consulting, and reporting for In-Situ soils ESTIMATE $60,000 Soil Testing, consulting, reporting for In-Situ soils 4) Additional Classic Site Solutions - Related costs (Soil testing, Lab reports, Site Control Measures, LSP and Project Coordination, Equipment costs) ESTIMATE 150,000 803,620.00 $ (B4 20% contingency) 5) Contingency 20% 160,724.00 $ 964,344.00 $ * Classic Site Solutions Change Order No 2 for removal of stockpiled soils in process - to be signed off prior to Feb. School Vacation