year 1 total of 5 kdv 500s ; year 2 total of 20 kdv 500s ; year 3 total of 40 kdv 500s ; year 4 total of 70 kdv 500s ; year 5 total of 110 kdv 500s ; year 6 total of 170 kdv 500s ; year 7 total of 250 kdv 500s ; year 8 total of 350 kdv 500s ; year 9 total of 475 kdv 500s ; and year 10 total of 600 kdv 500s. year 1 total of 150 kdv 500s ; year 2 total of 300 kdv 500s ; year 3 total of 450 kdv 500s ; year 4 total of 600 kdv 500s ; and year 5 total of 750 kdv 500s ; ( i ) a purchase price ( the “ purchase price ” ) consistent with the terms of this agreement, including section 3. 1 and 3. 2 ; ( ii ) a down payment equal to [ * * * * * ] to ak by covanta at the time this agreement is signed as provided for in section 3. 6 ; ( iii ) the delivery by ak of a comprehensive package of documents for the system ( the “ document package ” ), including all preliminary drawings, detailed heat and material balances, interface control documents, equipment specifications, piping and instrumentation diagrams, a system manufacturing plan and such other documents as the parties agree should be made available by ak for review by covanta ; ( iv ) within twenty - one ( 21 ) days following the delivery of a complete document package, ak, licensor and global shall meet to review the document package and discuss any comments of, or changes being proposed by, covanta and work out any final changes to the document package ; ( v ) within fifteen ( 15 ) days of agreeing on the document package, a payment of [ * * * * * ] by covanta to ak if the kdv 500 is being ordered with two proprietary mixing turbine pumps or a payment of [ * * * * * ] by covanta to ak if the kdv 500 is being ordered with only one proprietary mixing turbine pump ; ( vi ) the right for covanta to make one or more visits to ak ’ s facility to review the fabrication of the system to confirm that the system is being fabricated in accordance with the document package ; ( vii ) the obligation for