Pile Installation Operations:

• This project includes the construction of new underground wastewater and water tanks and buildings. Concrete piles are used in this construction to support the permanent structures.   
• These concrete piles are placed into the earth using a hammer, which at times may seem loud due the hammer hitting the top of the concrete pile during installation.
• Installation of several thousand concrete piles is a slow process taking several months to ensure that the piles are correctly installed and to maintain vibration limits to keep from damaging existing adjacent structures. The contractor is monitoring vibration on site near installations to stay within project vibration limits.
• The noise level will vary based on type of equipment used, length of piles, and the soil conditions. 
• The concrete piles will be transported to the site using tractor-trailers, coming from the Monitor/Merrimack tunnel. Their use of Terminal Ave will be limited and should not significantly impact traffic flow. We anticipate less than 6 truckloads each day during the pile installation phase of the project.
• Below are pictures of the concrete piling installation process.