Agenda - 04-03-2018 8-e - Major Subdivision Preliminary Plat Application – Morgan Ridge Subdivision

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75 -7- Provide acreage estimates for non- jurisdictional waters in the review area, where the sole potential basis of jurisdiction is the MBR factors (i.e., presence of migratory birds, presence of endangered species, use of water for irrigated agriculture), using best professional judgment (check all that apply): ❑ Non - wetland waters (i.e., rivers, streams): linear feet, wide. ❑ Lakes /ponds: acres. ❑ Other non - wetland waters: acres. List type of aquatic resource: ❑ Wetlands: acres. Provide acreage estimates for non - jurisdictional waters in the review area that do not meet the "Significant Nexus" standard, where such a finding is required for jurisdiction (check all that apply): ❑ Non - wetland waters (i.e., rivers, streams): linear feet, wide. ❑ Lakes /ponds: acres. ❑ Other non - wetland waters: acres. List type of aquatic resource: ❑ Wetlands: acres. SECTION IV: DATA SOURCES. A. SUPPORTING DATA. Data reviewed for JD (check all that apply - checked items shall be included in case file and, where checked and requested, appropriately reference sources below): ® Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: S &EC ❑ Data sheets prepared /submitted by or on behalf of the applicant /consultant. ❑ Office concurs with data sheets /delineation report. ❑ Office does not concur with data sheets /delineation report. ❑ Data sheets prepared by the Corps: ❑ Corps navigable waters' study: ® U.S. Geological Survey Hydrologic Atlas: ® USGS NHD data. ❑ USGS 8 and 12 digit HUC maps. ® U.S. Geological Survey map(s). Cite scale & quad name: 1:24K; Bynum USDA Natural Resources Conservation Service Soil Survey. Citation: Chatham County 2006 ® National wetlands inventory map(s). Cite name: Corps GIS Data (NWI) ❑ State /Local wetland inventory map(s): ® FEMA/FIRM maps: Corps GIS data (FEMA Floodzones) ❑ 100 -year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) ® Photographs: ® Aerial (Name & Date): Unnamed and Undated provided by consultant or ❑ Other (Name & Date): ❑ Previous determination(s). File no. and date of response letter: ❑ Applicable /supporting case law: ❑ Applicable /supporting scientific literature: ® Other information (please specify): LiDAR, DEM and 2 foot contour (Chatham County) Corps GIS data B. ADDITIONAL COMMENTS TO SUPPORT JD: 1. September 2016 Consultants map indicates that the pond has no apparent surface (or subsurface) connection to the closest receiving stream downslope. 2. USGS map shows the pond but does not indicate any streams located in the immediate area. No stream symbols are located within the crenulations immediately downslope of the pond. 3. Soils map does not indicates a steam feature downslope of the pond. Shows smaller open water feature at this location, surrounded by soils (GaB) that are non- hydric and classified as well drained. 4. NWI map indicates only the pond. The Cowardin classification is: PUBHh (Palustrine /Unconsolidated Bottom/Permanently Flooded /diked). 5. Aerial photograph shows the pond feature. It does not provie any conclusive evidence of aquatic features, such as streams flowing into or exiting (upstream or downstream) of the pond. 7 FE MA floodmaps indicate the pond is located within zone X or outside of the 100 year floodzone. 8. Chatham County contour /LiDAR data indicates the pond is located in a relatively higher area than confirmed downslope waters. 9. No apparent hydrological surface or subsurface connection was observed during the site visit (16 September 2017). Appears to have constructed berm around most of the feature.