The area to be analyzed consists of approximately 1.17 acres and is comprised of mostly grassy area, with a residential building, garages, and asphalt paving. Currently, the stormwater runoff generated by the existing site drains to the western and eastern portions of the site via overland flow. Due to commercial development that occurred since 1981 without application to the Pinelands Commission the subject site has been evaluated using an Historical Area Map from 1972 as depicted in the Existing Drainage Area Map included in the Appendix of this report.
Existing Study Area West: This area consists of 1.020 acres and is comprised of mostly grassy area, a one-story house, two (2) garages, and asphalt paving. Under existing conditions, the stormwater runoff generated by the existing site drains to the western portion of the site via overland flow.
| Drainage Area Name | Drainage Area (acres) | Time of Concentration (minutes) | Curve Number (CN) |
|---|---|---|---|
| Ex. Study Area West (Perv) | 0.93 | 8.8 | 39 |
| Ex. Study Area West (Imp) | 0.09 | 2.0 | 98 |
| Ex. Total | 1.02 | - | - |
Existing Conditions Flow Summary Table
| Current Rainfall Conditions | Projected Rainfall Conditions | |||||
| Drainage Area Name | Q2 (CFS) | Q10 (CFS) | Q100 (CFS) | Q2 (CFS) | Q10 (CFS) | Q100 (CFS) |
|---|---|---|---|---|---|---|
| Ex. Study Area West Total | 0.19 | 0.30 | 1.51 | 0.23 | 0.45 | 2.37 |
Existing Study Area Road: This area consists of 0.150 acres and is comprised of mostly grassy area, concrete, and asphalt paving as well as a portion of the existing South Hope Chapel Road (C.R. 547) right-of-way along the subject property frontage. Under existing conditions, the stormwater runoff generated by the existing site drains to the eastern portion of the site via overland flow.