70 W Dutton Island Rd RES20-0167 6 of 15 drainage narrative_1
2650 ROSSELLE STREET, Suite 2A Jacksonville FL 32204 Ph: 904-551-4945
Civil Design and Construction Management Professionals
MAY 19, 2020
Atlantic Beach Site Drainage Improvements
In-Fill Lots
Lot Address: 70 Dutton Road
Atlantic Beach, FL
NARRATIVE:
The attached calculations are provided to support the lot drainage design at 70 Dutton Road in
the City of Atlantic Beach, FL. The calculations were performed utilizing the equations in the
city ordinance sec 24-66(b) and bulletin 1-20.
The referenced project site was vacant and the calculations utilized this as the predevelopment
condition. The total lot area shown in the pre and post calculations was calculated from the
table in the survey.
The proposed project will construct a home, driveway, and stormwater storage facility.
The runoff coefficient was provided based on the impervious values and associated
coefficients of sec 24-66(b) of the code.