Site investigation for subdivision in MA (Civil Engineers or Builders)

I am in need of a civil engineer specialized in soil testing, particularly in conducting a percolation test. The primary goal for this project will be to assess whether or not a piece of land that I plan on buying is both buildable and subdividable. In order for this large lot to be subdividable, I need to have perc tests done in multiple locations on the site. Therefore, conducting soil testing (percolation tests) to assess the soil's suitability for a septic system is critical. Ideal candidates should be civil engineers (or builders) with experience in soil testing particularly percolation tests. A familiarity with septic systems is a strong plus. The site location is the town of Palmer, MA. Thanks. Joe