This is a contract term, and this isn't law.se so the suitability of a term would depend on local jurisdiction and local industry practices and accepted jargon, which can be highly regional.
In common law systems if both you and the contractor understand each other, (meeting of the minds) then any word would suffice that is mutually intelligible, but this is not a universal concept. In that case I would simply ask the contractor what wording they would expect.
"Chasing" is accurate enough that if questioned can be looked up in the dictionary, but I agree with others that it is not a common industry jargon in the US, for this type of work, but may well be where you are.
In a scope of work, a type of contract, I would err on more explicit and verbose description of the work and not try to find a term unless one immediately comes to mind. The appropriate jargon will vary from one culture to another.
Arrange to perform any necessary work, at contractors expense, to route appropriate channels for new conduit, if an existing suitable conduit or channel is not available
I would consult a lawyer/paralegal or someone local who you trust that is familiar with what a typical Scope Of Work or if the contractor is above board and willing - ask them for help in the wording