[18]. Based on street 30 feet wide and sprinkled twice daily for 150 days.
[19]. Railroad company furnishes electric power and use of tracks for car sprinkler and power flusher. City pays for car.
[20]. City furnishes two men and company motormen and conductor. City owns sprinklers.
[21]. Including 10% of cost of machinery for depreciation and repairs and 4½% interest on machinery.
[22]. Trolley car flusher.
[23]. Per 1,000 sq. yds.
[24]. Does not include depreciation and interest.
[25]. On city work only. Does not include amount paid to contractor.
[26]. Includes cleaning drains and gutters and inlets, cleaning under small highway bridges and removing fallen trees from roadway.
[27]. One square equals 540 ft. including salaries and wages, cost of new appliances, repairs and maintenance of appliances and all other overhead charges.