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Cement Pipe that is left in the ground?

I have a situation where a sanitary asbestos cement 'transite' sewer laid adjacent to a river back in the early '70's has now been exposed in the banks and river bed by erosion and scour.  A new sewer will be laid located outside the influence of the river however because of its location and the possible environmental disturbance of cutting or breaking and removing the transite pipe in the river, it is proposed to grout the existing pipe and leave it in place.



Answer;

Transite is a non-friable asbestos consisting of any material with greater than 1% asbestos that when dry cannot be crumbled, pulverized, or reduced to powder by hand pressure.  Examples include: cementitious asbestos board, Transite siding, asbestos putties, asbestos sealants and adhesives. 

All asbestos waste is generally disposed of in a permitted, lined, mixed municipal solid waste landfill or industrial landfill permitted to accept asbestos. Demolition debris landfills usually do not accept asbestos containing materials.

US DOT does not regulate non-friable asbestos as a hazardous material, so a hazardous material shipping paper is not required for asbestos contained in natural or artificial binding material.

You should remove the exposed material and dispose of it in a landfill. Plug both ends of the remaining buried sewer segments. If the sewer is installed within a levee, it may cause the levee to fail.

Be sure to review your solution with the authority having jusrisdiction.
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