About Us

Ahsirt Engineering, Inc. is an engineering firm on the central coast of California specializing in an array of services for distinguished properties in coastal California. AEI concentrates on engineering project management, on-site wastewater treatment for multi-family or commercial facilities and stormwater related services including, but not limited to: SWPPPs, grading plans and hydrology studies.

Our staff of talented professionals take great pride in offering quality green solutions that are on time and on budget.

Principal Engineer

Trisha Coffey, P.E.

Trisha Coffey received her B.S. in Civil Engineering from California Polytechnic State University, San Luis Obispo, California and continued on to obtain her M.S. in Civil and Environment Engineering concentrating on wastewater treatment from hazardous facilities. Trisha has over ten years of experience specializing in water and soil treatment technologies and hydraulic analysis. She is a state licensed Qualified SWPPP Developer (QSD)/Qualified SWPPP Practitioner (QSP)