Specifications include, but are not limited to: Providing the injection of expanding polymers to stabilize and seal soils at bridge and pavement sites during the period July 1, 2021 through November 30, 2022. The proposed work includes providing all labor, materials, equipment and transportation necessary to inject expanding polymer to stabilize and seal soils at the following locations: 1. I-93 NB and SB over Hubbard Brook in Thornton, NH (bridges Thornton 152/073 and Thornton 153/074) at mile marker 93.2. The work will include overhead injection at joint locations shown to stabilize soils above the existing concrete box culvert to facilitate overhead concrete repairs (see Exhibit B 3 of 3). Injection holes shall be sufficiently spaced to assure that soils can bridge above the culvert during concrete repairs. 2. NH 3A in Franklin, NH (GPS Coordinates 43.460586, -71.660695). The work shall consist of injection to provide soil densification to strengthen base and subbase materials under concrete pavement. Pavement profiles will be taken every 10 feet in a longitudinal direction on the edges and center of the work area. Profile spots will be taken before and after injections, monitored during injection, and documented for review.