Grinder pump ejection lines

A question for my plumbing brothers from up North...Im working at a home that has a grinder to handle sewage. The 2" PVC ejection line runs through the house because their is a large retaining wall outside that does not allow the line to run outside (this is how I normally see them installed)
The problem is when the pump cycles on the ejection line vibrates and is heard through the house. Also this line is right under the master bedroom so you know HO is not happy.
Question is how do you guys up north insulated and or isolate vibration from this line? Should the construction crew have used different material?
Any help appreciated. We have eliminated any issue with the pump itself and did install insulation in part of the pipe which did eliminate noise but then we got called back

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