upon completion of the Pumping Station works and acceptance by the City, the City shall pay to the Developer up to $37,500 out of the Provincial Sewer Grant received in relation to the Pumping Station, it being understood that such grant is 258 of the cost of the Pumping Station and provided that no payment is due hereunder unless and until the City receives same from the Province; for five years, on each anniversary of the date of Certificate of Completion of the Pumping Station, commencing one year after the date of the Certificate of Completion, the City shall pay to the Developer up to, in cumulative total, the difference between the maximum cost calculated pursuant to section 8{a) and the amounts payable or to be credited to the Developer pursuant to Sections 8(b), (c) and (d), without interest, the maximum annual payment being limited to development cost charges contributed to the City during that year in the Sanitary sewer benefitting area that includes the Lands: and any balance outstanding to the maximum payable pursuant to Section $8{a) due to insufficient collection of development cost charges shall be paid on the fifth anniversary of the date of the Certificate of Completion of the Pumping Station. at Cee ace The City shall contribute to the cost of construction of the water main works provided for in Section 3(b),