Bonds Estimation

NOTES

1. Drainage structure costs listed are to be used for depths up to 5 feet with box dimensions as shown. For greater depths and increased sizes, costs shall be increased accordingly.
2. Corrugated steel pipe and corrugated aluminum pipe will be bonded at the unit price listed for class III reinforced concrete pipe unless otherwise noted.
3. Precast drainage structures will be bonded at the unit prices for built in place structures.
4. The Engineer will be required to furnish estimated unit prices or lump sum costs for maintenance of traffic and other items not listed.
5. The bond amount for storm drain/ or paving permits covering only a small amount of construction, will be increased by an amount deemed necessary by Montgomery County Department of Permitting Services, to cover additional contractor mobilization expenses at the job site.
6. The grading permit estimate shall include a lump sum amount to ensure restoration of any existing improvements in the public right of way over the haul route for construction materials. The proposed haul route shall be identified by the Engineer (as an attachment to the grading permit estimate) from the site to a County maintained arterial road or a state maintained highway. The estimate shall include, as a minimum, the cost to replace 25% of the following improvements:
   1. Paving based on the amount required for the street classification (including removal of any damaged pavement).
   2. Curb and gutter, if applicable.
   3. Shoulder sod, if no curb and gutter exists along the edge of pavement.

(The estimate shall increase for paved areas that may be readily susceptible to failure.)