Conn. Agencies Regs. § 13b-17-38
In the area between the edge of the shoulder and right-of-way line, backfilled material shall be tamped in excavations in the manner previously described until flush with the surrounding ground surface. Excess material, roots, stones and debris shall be removed by the permittee and all areas affected by his operations shall be left in a neat and orderly condition. As the backfilled material settles, additional material shall be placed by the permittee from time to time, as required, to keep the surface reasonably even. Ater the settlement is completed, the excavated area shall be left by the permittee in as good a condition as before the work started.
Where the operations of the permittee are expected to disturb gardens, lawns or shrubs, the permittee shall secure the District Maintenance Manager's approval, in advance, as to the method of accomplishing the work. The District Maintenance Manager shall designate, at that time, what part, if any, of the removal and restoration shall be done by the State, at the permittee's expense. The permittee shall be responsible for the cost of reestablishing lawns or turfed areas and shall not be relieved of this responsibility until the grass on the seeded or turfed areas has attained a uniformly dense growth with a height of at least three inches.
Grass seed used by the permittee shall be in accordance with State of Connecticut Standard Specifications for Roads, Bridges, and Incidental Construction as revised regarding purity, germination, seed varieties by weight and application rate. Grass seed may be applied by hand or by cyclone-type distributor. In established lawn areas, the permittee may be required to reestablish disturbed areas with suitable sod.
Fertilizer of the commercial type and lime should be applied to the seed bed as required by soil conditions.
Seeding will not be permitted between July 1 and August 15, unless specifically authorized by the District Maintenance Manager.
Loam, when supplied by a permittee, shall consist of loose, friable material without the admixture of subsoil, refuse, rocks, weeds or any other material which will prevent or interfere with the formation of a suitable seed bed. Prior to stripping, it shall have demonstrated by the occurrence of healthy crops, grass or other vegetative growth upon it, that it is of good quality and reasonably well-draining. The permittee shall inform the Permit Inspector of the source of the topsoil prior to transporting it to the project, to afford the State Bureau of Highways the opportunity to examine it. Any loam spilled on the surface of the State highway during haulage shall be removed promptly, before it becomes compacted by traffic. Such material, when removed, must not be cast upon the roadsides.
Conn. Agencies Regs. § 13b-17-38