All material proposed to be used in construction shall have due examination and be subjected to such tests as are required by the Village Manager or his duly designated representative. Any materials used shall be the equal of samples examined or tested, and if, after approved, the quality of the material changes so that is does not conform to the original sample tested, the developer shall be required to secure the necessary materials from other sources of supply. The Village Manager or his duly designated representative shall be supplied with a sample of all materials used, if required.
All cement used shall be portland cement of known and approved brands. It shall meet with the requirements of the Standard Specifications and Tests for Portland Cement adopted by the American Society for Testing Materials.
A. 
Sand shall consist of grains or particles of quartz or other hard and durable rocks. It shall be clean, sharp and free from injurious coatings, lumps of clay or organic matter.
B. 
Sand shall be so graded that, when dry, 100% will pass a one-fourth-inch square-mesh sieve; not more than 20% by weight shall pass a Standard No. 50 sieve; and not more than 6% by weight shall pass a No. 100 sieve.
C. 
Sand shall not contain more than 5% of loam or silt by volume.
D. 
Mortar in the proportion of one part cement to three parts sand shall develop a compressive strength at least equal to the strength of a similar mortar composed of the same parts of the same cement and Standard Ottawa sand.
The broken stone shall consist of clean, durable sharp-angled fragments of rock of uniform quality throughout, free from thin or elongated pieces, soft or disintegrated stone, dirt or other objectionable features. Broken stone for top-course macadam shall be trap rock.
Bituminous macadam shall follow state specifications for Type 1A asphalt concrete, Item 51, Page 290, Public Works Specifications of January 2, 1951.
Wherever materials are to be used for which no specfications are provided, materials only of best grade and first quality shall be used. The approval of the Village Manager or his duly designated representative must be secured before the same are incorporated in the work.