FROM INTERSTATE 495 GOING NORTH

Heading north on I-495, take the exit for Route 2A and turn right at the top of the ramp. Follow Route 2A to Littleton Common and turn right at the traffic light onto Route 2A/119. Follow 119 for approximately 3 miles. You will pass a sign indicating you are entering Acton, and then pass Nagog Pond on your right. On your left you will then pass Beth Circle, then Henley Road, then a small shopping mall and Nonset Path. On your left immediately after Nonset Path, turn into the parking lot for 481 Great Road, a two-story white building with green awnings. HydroAnalysis is located on the second floor of this building, in Unit 3.

FROM INTERSTATE 495 GOING SOUTH

Heading south on I-495, take Exit 31 for Route 119/Littleton Common and turn right (119 east) at the end of the ramp. Follow Route 119 through Littleton Common and for another approximately 3 miles. You will pass a sign indicating you are entering Acton, and then pass Nagog Pond on your right. On your left you will then pass Beth Circle, then Henley Road, then a small shopping mall and Nonset Path. On your left immediately after Nonset Path turn into the parking lot for 481 Great Road, a two-story white building with green awnings. HydroAnalysis is located on the second floor of this building, in Unit 3.

FROM ROUTE 2 HEADING WEST

Follow Route 2 west from Concord. At the Concord Rotary (immediately after Concord Prison on the left), take the second turn-off, onto Route 2A/119. Follow Route 2A for approximately 3 miles to the traffic light at the intersection with Route 27. Continue straight ahead on Route 2A through the intersection. After about one-half mile, you will pass on the right Harris Road, then a small mall with Acton Convenience, then Sachem Way. At almost exactly one mile after the intersection of Routes 2A and 27 turn right into the parking lot of 481 Great Road, a white two-story building with green awnings. HydroAnalysis is located on the second floor of this building, in Unit 3.