20070184 Ver 1_Staff Comments_20080428

Project Name: Carolina Lakes Block T
County: Harnett
DWQ Project #: 07-0184
Date: 4/28/08
Ian,
Based their response, (and in fact looking through the File), I did not find any site
plans that had existing or proposed topographic contours. Hence, there is no drainage
area map, as well as the break down of impervious calculations for each drainage
area.
Since, it's already been issued, we may ask them to demonstrate with new
documentation or information that they show us that each drainage area is in fact less
than 24% in order to remove the "Stormwater Condition" of interest.
Please resubmit two (2) copies of the site plans for Phases 1 & 2 on a scale not
smaller than 1" : 50'. The site plans must show existing and proposed contours,
all lots, roads/streets, utility features, club houses (if any), wetlands, etc.
2. Please delineate the drainage areas on each site plan, and show the stormwater
collection and drainage system. In other words, please provide drainage maps, and
show the stormwater conveyance system from collection (inlets) to outfalls
(outlets).
3. For each drainage area, please provide impervious surface area calculations
along with all data used in the calculations such as number of lots, average lot
size, street and driveway dimensions (length, width), etc.