§ A206-23. Foundation course.

A. 

The foundation course shall consist of a minimum of 12 inches of well-graded, uniformly mixed broken stone, hard shale, crushed stone, broken slag, or run-of-bank gravel as approved by the Town Superintendent of Highways and/or Town Engineer.

B. 

If deliveries of coarse aggregate show segregation of sizes, material shall be mixed to the specified gradation before using.

C. 

No aggregate containing more than 5% chert, as determined by the Town Superintendent of Highways and/or the Town Engineer, may be used for surface treatment work.

D. 

Aggregate shall contain no particles larger than four inches in thickness, and all aggregate shall be well graded from coarse to fine. All materials shall be of the required sizes when placed in the work, and breaking up stone, gravel or slag by hammers or otherwise will not be permitted.

E. 

Crushed stone shall consist of clean, durable, sharp-angled fragments of rock of uniform quality throughout. Gravel hardheads retained on a four-inch scalping screen and then crushed will be acceptable as crushed stone, provided such crushed hardheads shall meet gradation requirements for the type of stone specified.

F. 

The foundation course shall be placed on the prepared subgrade in two layers, and each layer shall be thoroughly compacted by the use of a ten-ton power-driven roller or other equipment approved by the Town Superintendent of Highways, and all imperfections that may show up must be brought up to an elevation parallel to, but equal to the depth of, the required gravel base and pavement depth.

G. 

A minimum of two months shall be allowed for the street to settle and compact before pavement shall be constructed. Stakes with final line and grade shall be maintained by the developer at all times to check the foundation course as well as pavement.

H. 

After the 12 inches of foundation course material have been in place for three months, three inches of gravel or Item #4 acceptable to the Town Superintendent of Highways and/or the Town Engineer shall be placed over the entire width of the roadway. This material shall then be compacted with a ten-ton power roller or other equipment approved by the Town Superintendent of Highways to present an even surface both longitudinally and transversely. To this surface will then be applied a wearing course of bituminous material of either "blacktop" or "motorpaving."

I. 

All materials will be sampled and tested whenever it may appear to be desirable. All materials must pass the soundness test as prescribed by the specifications of the New York State Department of Transportation. The costs of these tests will be borne by the developer, and he will provide the Town Superintendent of Highways certified test results of all material that require testing.