HRP Associates Adds Staff in Plymouth
August 4th, 2026

HRP Associates Inc. (HRP), an environmental engineering and hydrogeology firm in Plymouth, announces the addition of Sean D. as a Director of Operations.
“HRP is pleased to welcome Sean as Director of Operations for our Massachusetts Site Assessment and Remediation team,” said Bryan Massa, Regional Manager. “With over 20 years of hands-on experience in complex environmental remediation, regulatory compliance, and brownfields redevelopment, Sean brings a strong foundation to support our ongoing site assessment and remediation projects. We are excited to have him join our team!”
Sean will support both regional and companywide marketing initiatives related to environmental site assessment and remediation services, while helping to expand HRP’s footprint in Massachusetts. He will also serve as a Licensed Site Professional (LSP), overseeing waste site cleanups, mentoring junior staff, and contributing to the development and execution of key strategic and operational plans for the Massachusetts region.
“I am excited to join the leadership team and look forward to collaborating with the diverse group of talented environmental, engineering, and compliance professionals on operations and large-scale remedial projects,” said Sean. “I look forward to contributing to HRP’s continued success while supporting complex projects and fostering strong collaboration across our teams.”
Sean holds a Bachelor of Science degree in Earth & Geographic Science/Hydrogeology from the University of Massachusetts Boston.




