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HomeMy WebLinkAboutSW7061222_HISTORICAL FILE_20200611NORTH CAROLINA .....a Department of Environmental Qua STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYM M DD Wa%0 ROY COOPER Governor MICHAEL S. REGAN Secretary BRIAN WRENN Director NORTH CAROLINA Environmental Quality June 11, 2020 Bertie County Attention: Mr. Juan Vaughan, Interim Manager P.O. Box 530 Windsor, NC 27983 Subject: Stormwater Permit Renewal Stormwater Management Permit SW7061222 Bertie County DSS Bertie County Dear Mr. Vaughan: A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit SW7061222 for a stormwater treatment system consisting of two wet detention ponds serving Bertie County DSS located at 1415 S. King Street, Windsor, NC expires on January 2, 2021. This is a reminder that permit renewal applications are due 180 days prior to expiration. We do not have a record of receiving a renewal application. Please submit a completed permit renewal application along with a $505.00 fee for permit renewal. Also, it was noted in the file review that a designer's certification that the project was constructed in accordance with the approved plans as required by the permit has not been submitted. Please include this with your application. Permit application forms for renewal can be found on our website at: https //deq.nc.goy/ ou /divisions/energy mineral land resources/energy-mineral-land- riilpc/ctt,rmwater-program/post-construction. North Carolina General Statutes and the Coastal Stormwater rules require that this property be covered under a stormwater permit. Failure to maintain a permit subjects the owner to assessment of civil penalties If you have questions, please feel free to contact me at (252) 948-3923. 1 will be glad to discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the application form. You can request a copy by e-mailing me at roper. thorpeCa-)ncdenr.00v. Sincerely, pT "r .�� Rog K. Thorpe Environmental Engineer ig DEQ�� North Carolina Department of Environmental Quality I DMsion of Energy. Mineral and land Resources Washington Regional Office 1 943 Washington Square Mall 1 Washington. North Carolina 27889 257946.6481 MWA NCDENR North Carolina Department of Environment and Natural Resources 943 Washington Square Mall, Washington NC 27889 (252) 946-6481 FAX (252)975-3715 Request for Express Permit Review FILL-IN all information below and CHECK required Permit(s), Please Include this with the application package upon submittal. Project application received after 12 noon will be stamped in the following work day. Thank youl Lyn Hardison Iyn.hardison(iilncmall.net APPLICANT Name Zee Lamb -County Manager Company Bertle County Address 1906 Nash Street North City/State Windsor, NC Zip 279e3 Phone 252-794-5300 Fax Email robert@baNetteng.com Name Bertle County DSS County Bertle I nr.ATION IAnnRFf1C1 1415 S. King St (US Hwy 17) Robert S. Bartlett Company Bartlett Engineering & Surveying, PC Address 1906 Nash Street North City/State Wilson, NC Zip 27e93 Phone 252-399-0704 Fax 252-399-0804 Email robert@bartletteng.com State or National Environmental Policy Act (SEPA, NEPA) — EA or EIS Required ❑Yes E] No ❑ STREAM ORIGIN Determination; # of Stream calls; Stream Name © STORMWATER ❑ Low Density x❑ High Density -Detention Pond ❑ High Density -Other ❑ Low Density -Curb & Gutter ❑ High Density -Infiltration ❑ Off Site PROJECT SYSTEM(S) TRIBUTARY TO UT to Cashie River STREAM NAME Roanoke RIVER BASIN ----------------------------------------------------------------- - ---- - -- - ----- ---- - - - - - -- - - --------------- —---------- ----------------- -- ❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront © LAND QUALITY x❑ Erosion and Sedimentation Control Plan with 9 0 acres to be disturbed. CK # k &C(o -- - - — - -- --------- ----------------------------------------------------------- -------------------------- ------------- ---------------- ❑ WETLANDS (401) ❑ No Wetlands on Site (letter from COE) ❑Wetlands Delineated/No JD ❑ Greater than 0.1 AC Wetlands Impacted ❑Jurisdictional Determination has been done ❑ Less than 0.1 AC Wetlands Impacted ❑Greater than 0.5 AC Wetlands Impacted CIRCLE Y/N: 401 Application []Yes ❑ No 404 Application in Process w/USCOE ❑Yes ❑ No The legislation allows additional fees, not to exceed 50% of the original Express Review permit application fee, to be charged for subsequent reviews due to the insufficiency of the permit applications. CHECK # 9 (v V SUBMITTAL DATES: SW 12-l4--0(, CAMA LOS_I7- For DENR use only Fee Split for multiple permits: $ I333. 33 DEC 14 2006 LI'iV(-I TARO Total Fee Amount $ Oil BAMLETT ENGINEERING & SURVEYING, K 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 j(,n@bariletteng.com bartletteng.com December 4, 2006 North Carolina Department of Environment and Natural Resources Division of Water Quality Attn: Mr. Scott Vinson 943 Washington Square Mall Washington, NC 27889 REFERENCE: BERTIE COUNTY DSS STORNMIA I ER NARRATIVE BERTIE CO, NC Mr. Vinson: DEC 7 4 2006 The proposed Berrie County DSS, Berrie County, NC, development is located in a coastal county that is nor draining to an ORW and is not within one-half mile of and draining to SA waters. l he development will be treated as a High Density Option due to the concentrated development activities under Administrative Code Section 15A NCAC 21-1.1005(3). This requires the use of a wet -detention basin to "control the runoff from all surfaces generated by one inch of rainfall". The 15.70 acre site will have a total built upon area of 56%. Two wet -detention basins will be required to catch runoff from all impervious surfaces. The detention basin (Pond 1-Small) drainage area consists of 1.55 total acres of which 1.073 acres are impervious area (69.14% of the drainage area). The detention basin (Pond 2- Large) drainage area consists of 10.15 total acres of which 7.46 acres are impervious area (73.49% of the drainage area). 100% of the built upon area runoff for the site is designed to be captured and transported to the wet -detention basin to provide for nutrient removal and designed to have a SA/DA sufficient to provide for greater than 90% TSS removal. The wet -detention basin is also designed to "control the runoff from all surfaces generated by one inch of rainfall" by providing a 2S day drawdown time for this event. ']'he remainder of the runoff from the site is designed to be sheet flow across vegetative surfaces prior to exiting the site. If you have any questions or need additional information, please contact our office. Thank you. Sincerely, on than Lec Meade Environmental Specialist Enclosure s I J{ z.. r S %• 1 M r- .. { I� •5:i A t l a - c TopoZone - USGS Windsor South (NC) Quadrangle Page 1 of 1 0 0.1 0.2 0.3 0.4 0.5 km 0 0.09 0.18 0.27 0.36 0.45 mi 35.9875-N, 76.9262°W (NAD27) USGS Windsor South (NC) Quadrangle Projection is UTM Zone 18 NAD83 Datum M* M=-10.102 G=-1.132 http://www.topozone.com/print. asp?lat=35.98748&lon=-76.92615&s=25&size=m&u=5 11/27/2006 l'opoGone - USGS Windsor South (NC) Quadrangle Page I of 1 LF topoz N. C�t%4X071Mp1lYwMh i r f V V•J V•o o.Y 1.2 1.5 km 0 0.2 0.4 0.6 0.8 1 mi 35.98670N, 76.9265°W (NAD27) USGS Windsor South (NC) Quadrangle Projection is UTM Zone 18 NAD83 Datum - I N http://www.topozone.com/print.asp?lat=35.98669&Ion=-76.9265&size=m&u=5&layer=... 11 /27/2006 BAWLETT ENGINEERING & SURVEYING, PC 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 _ jon@abattlettengeorn DEC 14 2006 December 14, 2006 North Carolina Department of Environment and Natural Resources Division of Water Quality Attn: Mr. Scott Vinson 943 Washington Square Mall Washington, NC 27889 REFERENCE: BERTIE CO. DSS SOILS EVALUATION-WINDSOR, NC Mr. Vinson: INTRODUCTION: A preliminary evaluation of soils and site characteristics was performed by Jon L. Meade, PhD on December 12, 2006 to evaluate potential suitability for onsite stormwater control using wet -detention ponds. Development of the site will require the use of two detention ponds due to the majority of the drainage area for the site entering a ditch that cuts across the property east to west. Pond#I (Small Pond) will collect runoff from the site north of the ditch and Pond#2 (Large Pond) will collect runoff from the site south of the ditch. From plan contours, significant relief for the site exists on the western property line from an elevation of approximately 28.0' to 15.0' over only 80.0' of distance (16.25% slope). The soil series mapped for the location include Craven along the lower areas closest to the ditch in conjunction with Dogue in upslope areas. These soils are generally shown as moderately well drained with permeability slow to moderately slow. Depth to seasonal high water table is typically 18"-36". They are generally shown as clay to 46"-54" changing to a sandy loam from 54"-70" to a loamy sand at 70"-80". METHODS: Two soil sample bore holes (#4 and #5) were performed for Pond#1 and locations are shown in Figure 1 with detailed information in Table 1. Soils are generally sandy clay to a depth of 5.0' with a sticky blocky clay layer approximately 42"-60" deep before turning to a fine to medium sand at 5.0'+. Bore hole #4 exhibited some redoximorphic features at 24"-42" but nothing significant until 54"-60". Bore hole #5 exhibited some iron depletions at 24"-44" and strong iron depletions from 44"-60". The high water table was estimated to be between 40"-60" and due to the restrictive layer of the soil, some redoximorphic features would not be uncommon in upper soil layers. Although no standing water was observed in the bore holes, the soils were fairly wet at 40"+. Four soil sample bore holes (#1, #2, 43, and #6) were performed for Pond#2 and locations are shown in Figure I with detailed information in Table 2. Soils are generally clay to sandy clay to a depth of 5.0'-6.0' before turning to a fine to medium sand at 5.0'-7.0'+. Evidence suggested a perched water table due to the restrictive clay soil layer exhibiting redoximorphic features 18"-30" deep. The fine to medium sand layers at 5.0'+ depth exhibited some evidence of a high water table at 6.0'-8.0', but no standing water was observed in the bore holes. The high water table was estimated to be approximately 7.0' deep. CONCLUSIONS AND RECOMMENDATIONS: Based on site contours, the existing ground elevations for Pond#1 range between 20.0' to 22.0'. With a proposed pond bottom elevation of 15.5' and permanent pool elevation of 18.5', the soil depth of interest range between 4.5'-6.5'. The high clay content of the soil layers down to approximately 5.0' with a high water table of approximately 40" deep should be sufficient to support a stormwater detention pond. The existing ground elevations for Pond#2 range between 21.0' to 26.0'. With a proposed pond bottom elevation of 16.0' and permanent pool elevation of 20.0', the soil depth of interest range between 5.0'-10.0'. Although the upper soil layers (down to approximately 5.0' depth) exhibited a strong clay content, the soil layer of interest (pond bottom) exhibited extremely sandy layers. This in combination with the extreme topographic relief on the western side of the site could pose potential problems with the stormwater detention pond being able to sustain a permanent pool elevation especially during the drier months. The area will most likely need to be over -excavated approximately 1.0+/- feet deeper than the current proposed pond bottom elevation and filled with a clay layer along the bottom and sides of the proposed detention pond. This could be accomplished by using the upper soil clay layers that would need to be excavated during pond construction. If you have any questions or need additional information, please contact our office. Thank you. Sincerely, Bartlett Engineering & Surveying 0 I X/ � 1 II \\ \ 1 \\ \ \\\\ N III \� SHELF \ \\ W/mpwLL IAPEW \ \ \ \ / CrB DgA BARTLETT NGINEERING & SURVEYING, PC I \ 1906 NASH STREET NORTH WILSON, NORTH CAROLINA 27893 I L (252)399-0704 FAX (252)399-0804 FIGURE 1: BORE HOLE LOCATIONS NOTE: SOIL SURVEY/INFORMATION TAKEN FROM USDA v 52 N NATURAL RESOURCES CONSERVATION SERVICE NATIONAL COOPERATIVE SOIL SERVEY WEB SERVICE. �o DgA-DOGUE 'SERIES / III—III—III—ITI=ITI-1=--"-'! -llI=III—III=11i �' CrB-CRAVENI SERIES FORMAY _- i 1= 11- DgA/ s+o -WRE#3 \ POND#` 11\ J BO�tE#2 OWLET�90RE#8 slmlmuae _ \ I I I Cr6 MBL --- --1— — --- \\Se"er3\public rebuilt\_CADD\_LANDPROJECTS\DKW\05061\dwg\05061SP3.dwg 12/14/2006 POND#1 (SMALL POND) EXISTING CONTOURS 20.0'-22.0' CLAY —SANDY C 0-60" FINE TO MED. 60"+ pzzrz/,j4 FULL POOL SEASONAL HIGH WATER TABLE APPROX. 40" + FREEBOARD 1 17.5' SOIL LAYER/POND X-SECTION No Scale POND#2 (LARGE POND) EXISTING CONTOURS 21.0'-26.0' TOP CLAY —SANDY CLAY 0-60" FINE TO MED. 60"+ FULL POOL 20.0' PERCHED WATER TABLE APPROX. 18"-30" SHELF (WITH TOPSOIL LAYER) POND BOTTOM 15.5' + FREEBOARD 1 6' PERIMETER SHELF (WITH TOPSOIL LAYER) 19.0' 1 2 1 POND BOTTOM 16.0' ESTIMATED SEASONAL HIGH WATER TABLE APPROX. 72"-84"" SOIL LAYER/POND X-SECTION No Scale \\Se"er3\public rebuilt\—CADD\—LANDPROJECTS\DKW\05061\dwg\05061SP3.dwg 12/14/2006 7:36:11 AM EST TABLE 1: SOIL PROFILE DESCRIPTIONS LOCATION: BORE HOLE#4 DEPTH " COLOR TEXTURE DESCRIPTION 0-10 10YR 5/2 SANDY CLAY LOAM 10-24 2.5Y 6/3 SANDY CLAY 24-42 2.5Y 6/2 SANDY CLAY 10YR 5/8 REDDISH MOTTLES/REDOX CONC. 42-54 2.5Y 7/2 CLAY BLOCKY 54-60 2.5Y 712 CLAYEY SAND 10YR 5/8 REDDISH MOTTLES/REDOX CONC. 60-72 2.5Y 7/2 FINE TO MED SAND LOCATION: BORE HOLE#5 DEPTH" COLOR TEXTURE DESCRIPTION 0-12 10 YR 5/4 SANDY CLAY LOAM 12-24 10YR 5/3 SANDY CLAY 10YR 6/4 24-44 10YR 5/4 SANDY CLAY 2.5Y 6/4 DEPLETIONS 44-60 2.5Y 5/4 CLAY STICKY 2.5Y 6/2 DEFINED IRON DEPLETIONS 60+ 2.5Y 6/4 FINE TO MED SAND NOTES: HIGH WATER TABLE ESTIMATED TO BE 40"-60" TABLE 2: SOIL PROFILE DESCRIPTIONS LOCATION: BORE HOLE#1 DEPTH" COLOR 0-10 10 YR 5/6 10 YR 6/1 10-18 2.5Y 7/1 18-28 2.5Y 7/2 TEXTURE SANDY CLAY SANDY CLAY SANDY CLAY DESCRIPTION 30-40% CRUMBLEY 28-44 2.5Y 6/2 CLAYEY SAND 2.5Y 7/1 IRON DEPLETIONS 10YR 5/8 LIGHT REDOX CONC 44-60 2.5Y 6/3 CLAYEY SAND 2.5Y 6/8 HEAVY REDOX CONC. 10YR 5/8 LIGHT REDOX CONC 60-70 2.5Y 6/2 FINE TO MED SAND 2.5Y 6/6 70-84 2.5Y 7/2 FINE TO MED SAND 10YR 5/8 MED-HEAVY REDOX CONC. 84-92 2.5Y 7/2 FINE TO MED SAND WAVY LAYER SUGGESTING FLUCTUATIONS 10YR 5/8 IN WATER TABLE/VERY WET AND GREASY LOCATION: BORE HOLE#2 DEPTH " COLOR TEXTURE DESCRIPTION 6-18 7.5YR 5/6 CLAY LOAM 18-36 7.5YR 5/6 CLAY TO SANDY CLAY 10YR 6/2 DEPLETIONS 36-40 10YR 6/6 CLAYEY SAND 7.5YR 5/8 44-66 7.5YR 5/6 CLAY BLOCKY/RESTRICTIVE 2.5Y 6/1 IRON DEPLETIONS 66-72 7.5YR 5/6 CLAYEY SAND 72-84 10YR 6/8 FINE TO MED SAND SOME DEPLETIONS 84-96 7.5YR 5/6 FINE TO MED SAND WAVY LAYER SUGGESTING FLUCTUATIONS IN WATER TABLE/VERY WET AND GREASY TABLE 2 (CONT.): SOIL PROFILE DESCRIPTIONS LOCATION: BORE HOLE#3 DEPTH" COLOR 0-12 2.5Y 6/4 12-24 10YR 6/8 2.5Y 6/1 24-48 10YR 6/2 TEXTURE CLAY LOAM CLAY CLAY TO SANDY CLAY 48-60 10YR 7/2 CLAYEY SAND 10YR 6/6 60-72 10YR 7/2 CLAYEY SAND 7.5Y 5/8 72-78 2.5Y 6/4 FINE TO MED SAND 78-84 7.5YR 5/8 FINE TO MED SAND 96 10YR 5/6 FINE TO MED SAND DESCRIPTION BLOCKY CLAY 50% 50% (DEPLETIONS) REDOX CONC. GREASY/STAINS HANDS LOCATION: BORE HOLE#6 DEPTH " COLOR TEXTURE DESCRIPTION 0-6 10YR 5/6 CLAY BLOCKY CLAY 6-20 2.5Y 6/2 SANDY CLAY 80% 2.5Y 6/6 20% 20-30 2.5Y 7/2 CLAY 10YR 5/8 REDOX CONC. 30-38 2.5Y 7/2 CLAY BLOCKY CLAY 10YR 5/8 W/ MORE REDOX CONC. 38-55 2.5Y 7/2 CLAY HEAVY CLAY/BLOCKY 10YR 5/8 HEAVY REDOX CONC. 55-70 2.5Y 6/2 CLAY BLOCKY CLAY 10YR 5/8 LIGHT REDOX CONC 70-84 7.5YR 5/8 FINE TO MED SAND 84+ 2.5Y 7/2 FINE TO MED SAND 10YR 518 LIGHT REDOX CONC. NOTE: RESTRICTIVE CLAY LAYER SHOWED EVIDENCE OF A PERCHED WATER TABLE 18"-30" HIGH WATER TABLE ESTIMATED TO BE APPROXIMATELY 84" SOIL SURVEY OF BERTIE COUNTY. NORTH CAROLINA �1 �t JLOIXN JL6/W J( e `��__ a y��'� }'# S"�r --��'( Zr+C ' Tit -r'°' =� k � 7'; ➢dis'^4'. � }'AM. 4 � %,,r'31� yam_ i . . .'°$T� Al ly h., r - f' — _ a O•yM/yy+Lh i`'ri r!a '�Y tpE 2\ `ii j !�� 1�. .y R � y 1 i 1 / $♦ ." £.. j� C, r.Fil� f ;" .! Bertie f i1�a 4 �`.W#�.`-�.�wt'+>�.�•")'�`5sisitH�,!-,'a3e t'i`�i!ri+'`: I�.'�`lif ��v..��:.i� Q� , . -. � "`-'�'_ „ ;#Ci.� 1. Meters 0 45 90 180 Feet 0 100 200 400 600 800 USDA N'ntunl Remurres � Canurrarbn tienire Web Soil Survey 1.1 National Cooperative Soil Survey 12/13/2006 Pagel of3 TopoZone - USGS Windsor South (NC) Quadrangle Page 1 of 1 Al -.a 0 0.1 0.2 0.3 0.4 0.5 km 0 0.09 0.18 0.27 0.36 0.45 mi 35.9876°N, 76.9258°W (NAD83/WG584) USGS Windsor South (NC) Quadrangle Projection is UTM Zone 18 NAD83 Datum M* M=-10.102 G=-1.132 http://www.topozone.com/print.asp?lat=35.98764&lon=-76.92582&s=25&size=m&u=5... 11 /27/2006 Official Series Description - CRAVEN Series Page 1 of 5 LOCATION CRAVEN NC+AL GA SC VA Established Series RAG-ENH, Rev. MHC 05/2004 CRAVEN SERIES MLRA(s): 133A, 153A MLRA Office Responsible: Raleigh, North Carolina Depth Class: very deep Drainage Class (Agricultural): moderately well drained Internal Free Water Occurrence: moderately deep, common Index Surface Runoff: negligible to very high Permeability: slow Landscape: Coastal Plain Landform: Uplands Hillslope Profile Position: Geomorphic Component: flats Parent Material: marine sediments Slope: 0 to 12 percent Elevation (type location): 20 to 100 feet Mean Annual Air Temperature (type location): 63 degrees F. Mean Annual Precipitation (type location): 54 inches TAXONOMIC CLASS: Fine, mixed, subactive, thermic Aquic Hapludults TYPICAL PEDON: Craven silt loam - cultivated. (Colors are for moist soil.) Ap--O to 7 inches; grayish brown (I OYR 5/2) silt loam; weak medium granular structure; very friable; common fine and medium roots; slightly acid; clear smooth boundary. (4 to 10 inches thick) E--7 to 9 inches; light yellowish brown (1 OYR 6/4) silt loam; weak medium subangular blocky structure; very friable; few fine and medium roots; very strongly acid; clear wavy boundary. (0 to 5 inches thick) Btl--9 to 12 inches; brownish yellow (1 OYR 6/6) silty clay loam; moderate fine and medium subangular blocky structure; firm; slightly sticky, slightly plastic; thin discontinuous clay films on faces of peds; few fine and medium roots; common fine and medium pores; very strongly acid; clear wavy boundary. Bt2--12 to 22 inches; brownish yellow (I OYR 6/6) silty clay; common fine distinct yellowish red (5YR 5/8) mottles; moderate fine angular blocky structure; very firm, sticky, plastic; thin continuous clay films on faces of peds; few fine roots; common fine pores; very strongly acid; clear wavy boundary. Bt3--22 to 36 inches; brownish yellow (1 OYR 6/6) silty clay; common fine and medium distinct gray (1 OYR 6/1) and common fine distinct yellowish red (5YR 5/8) mottles; moderate fine and medium angular blocky structure; very firm, sticky, plastic; thin continuous clay films on faces of peds; few fine pores; very strongly acid; gradual wavy boundary. http://www2.ftw.nres.usda.gov/osd/dat/C/CRAVEN.html 12/11/2006 Official Series Description - CRAVEN Series Page 2 of 5 Bt4--36 to 46 inches; light yellowish brown (1 OYR 6/4) clay; many medium distinct gray (10YR 6/1), common medium distinct reddish yellow (7.5YR 6/8), and common fine distinct red (2.5YR 4/8) mottles; weak medium angular blocky structure; very firm, sticky, plastic; thin continuous clay films on faces of peds; very strongly acid; gradual wavy boundary. (Combined thickness of Bt ranges from 24 to 50 inches.) BC-46 to 54 inches; gray (I OYR 6/1) clay; common medium faint pale brown (I OYR 6/3), common fine and medium distinct reddish yellow (7.5YR 6/8), and common fine prominent red (2.5YR 4/8) mottles; weak medium platy structure; very firm, sticky, plastic; very strongly acid; clear wavy boundary. (0 to 25 inches thick) C1--54 to 70 inches; brownish yellow (1 OYR 6/6) sandy loam; common lenses and pockets of sandy clay loam; common fine faint reddish yellow (7.5YR 6/8) and few fine and medium distinct light gray (I OYR 7/1) mottles; massive; very friable; very strongly acid; gradual wavy boundary. C2--70 to 80 inches; brownish yellow (1 OYR 6/6) loamy sand; common fine and medium faint reddish yellow (7.5YR 6/8) and few fine and medium distinct light gray (1 OYR 7/1) mottles; massive; very friable; very strongly acid. TYPE LOCATION: Craven County, North Carolina; 4 miles northwest of Vanceboro on N.C. 43; 0.6 mile east on S.R. 1644; 30 feet west of road in cultivated field. RANGE IN CHARACTERISTICS: Depth to Bedrock: Greater than 60 inches Depth to Seasonal High Water Table: 24 to 36 inches, December to April Rock Fragment content: 0 to 3 percent, by volume, throughout Soil Reaction: extremely acid to strongly acid, except where limed RANGE OF INDIVIDUAL HORIZONS: A or Ap horizon: Color --hue of 1 OYR or 2.5Y, value of 3 to 6, and chroma of 1 to 3 Texture (fine -earth fraction)-- loam, silt loam, very fine sandy loam, or fine sandy loam. Eroded pedons are clay loam, sandy clay loam or silty clay loam. E horizon: Color --hue of I OYR to 5Y, value of 5 to 7, and chroma of 2 to 4 Texture (fine -earth fraction)-- loam, silt loam, very fine sandy loam, or fine sandy loam. BE or BA horizon (if it occurs): Color --hue of I OYR or 2.5Y, value of 4 to 7, and chroma of 3 to 8 Texture (fine -earth fraction)-- loam, clay loam, silt clay loam, or sandy clay loam. Bt horizon (upper part): Color --hue of 7.5YR to 2.5Y, value of 5 to 7, and chroma of 3 to 8 Texture (fine -earth fraction)-- clay loam, silty clay loam, silty clay, or clay Other features-- average clay content of the Bt horizon is 35 to 55 percent and silt plus the very fine sand content is more than 30 percent Bt horizon (lower part): http://www2.ftw.nrcs.usda.gov/osd/dat/C/CRAVEN.html 12/11 /2006 Official Series Description - CRAVEN Series Page 3 of 5 Color --hue of 7.5YR to 2.5Y, value of 5 to 7, and chroma of 3 to 8 with few to many mottles of chroma 2 or less or hue of 1 OYR or 2.5Y, value of 5 to 7, and chroma of I to 2 with iron masses in shades of red, yellow, and brown Texture (fine -earth fraction)-- clay loam, silty clay loam, silty clay, or clay Other features-- average clay content of the Bt horizon is 35 to 55 percent and silt plus the very fine sand content is more than 30 percent BC or BCg horizon: Color --hue of 1 OYR or 2.5Y, value of 5 to 7, and chroma of 1 or 2 with mottles in shades of red, yellow, or brown. Some pedons have BC horizons with dominant chroma of 3 or more and many mottles of chroma 2 or less Texture (fine -earth fraction)-- silty clay loam, clay loam, silty clay, clay, sandy clay, or sandy clay loam C horizon: Color --hue of 1 OYR to 2.5Y, value of 5 to 7, and chroma of 1 to 6. Pedons with dominant chroma of 3 or more have many mottles of chroma 2 or less Texture (fine -earth fraction)-- clay loam, loam, sandy clay loam, sandy loam, or loamy sand. Redoximorphic features -- in shades of red, brown, and yellow are in most pedons COMPETING SERIES: Eulonia soilshas less than 30 percent silt in the PSCS Maubila soilshave fragments of ironstone Nevare soilshas a perched water table GEOGRAPHIC SETTING: Landscape: Coatal Plain Landform: Upland Geomorphic Component: Flat Parent Material: Marine sediments Elevation: 20 to 100 feet Mean Annual Air Temperature: 59 to 67 degrees Mean Annual Precipitation: 40 to 60 inches Frost Free Period: GEOGRAPHICALLY ASSOCIATED SOILS: Bayboro soils-- have poorer drainage and are on lower landscape positions Bladen soils-- have poorer drainage and are on lower landscape positions Exum soils-- have less clay Goldsboro soils-- have less clay Grantham soils-- have poorer drainage and are on lower landscape positions Leaf soils-- have poorer drainage and are on lower landscape positions Lenoir soils-- have poorer drainage and are on lower landscape positions Lynchburg soils-- have poorer drainage and are on lower landscape positions Nahunta soils-- have poorer drainage and are on lower landscape positions Norfolk soils-- have less clay and occur on higher, well drained landscape positions Rains soils-- have poorer drainage and are on lower landscape positions DRAINAGE AND PERMEABILITY: Drainage class (Agricultural): moderately well drained Index Surface Runoff: negligible to very high Internal Free Water Occurrence: moderately deep, common http://www2.ftw.nrcs.usda.gov/osd/dat/C/CRAVEN.htmi 12/ 1 l /2006 Official Series Description - CRAVEN Series Page 4 of 5 Permeability: slow USE AND VEGETATION: Major Uses: crops and woodland Dominant Vegetation: Where cultivated-- corn, soybeans, tobacco, cotton, small grain, peanuts, and pasture. Where wooded-- loblolly pine (Pinus taeda), red maple (Ater rubrum), sweetgum (Liquidambar styraciflua), water oak (Quercus nigra), southern red oak (Quercus falcata), yellow -poplar (Liriodendro tulipifera), blackgum (Nyssa sylvatica), white oak (Quercus alba), post oak (Quercus stellata), American holly (Ilex opaca), and other overstory species. Understory species include bitter gallberry (Ilex glabra), sourwood (Oxydendrum arboreum), flowering dogwood (Cornus florida), wax myrtle (Myrica cerifera), blueberry (Vaccinium spp.), grape (Vitus spp.), Carolina jessamine (Gelsemium sempervirens), large gallberry (Ilex eoriacea), honeysuckle (Lonicera spp.), and summersweet clethra (sweet pepperbush) (Clethra alnifolia).. DISTRIBUTION AND EXTENT: Distribution: Coastal Plain of North Carolina, South Carolina, Georgia, Virginia, and perhaps other southern states Extent: large MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: Craven County, North Carolina, 1930. REMARKS: Newseries soils were previously mapped as... Diagnostic horizons and soil characteristics recognized in this pedon are: Ochric epipedon--the zone from 0 to 9 inches (Ap & E horizon) Argillic horizon --the zone from 9 to 46 inches (Bt horizons) Aquic conditions --the soil has redox depletions and concentrations within the upper 24 inches of the argillic horizon, with periodic saturation and reduction at some time during the year Series control section --the zone from 0 to 60 inches ADDITIONAL DATA: (1) This series is among Benchmark soils; characterization data at type location exists in S77NC-49-1 and on alternate site S78NC-49-44. (2) North Carolina State University (a) Swelling pressure and COLE data on undisturbed B horizon samples at the type location in Craven Co., North Carolina. BtI Bt2 Bt3 Swelling pressure (lbs/sq in) 108 1002 141 COLE .04 .06 .04 (b) Saturated hydraulic conductivity (K) data from 1 pedon Craven Co., North Carolina; from undisturbed 3-inch cores collected for cooperative research by N.C.S.U., SCS, and the Craven County Health Department. Horizon Depth (in.) K (in./hr.) Ap 1-4 1.88-2.16 A2 6-9 0.18-0.32 Btl 13-16 0.09-0.10 Btl 20-23 0.16 Bt2 29-32 0.14 Bt3 40-43 0.13 http://www2.ftw.nrcs.usda.gov/osd/dat/C/CRAVEN.html 12/11 /2006 Official Series Description - CRAVEN Series Page 5 of 5 Data Map Unit ID (type location): 00000 TABULAR SERIES DATA: Soil Name Slope Airtemp FrFr/Seas Precip Elevation CRAVEN 0- 12 59- 64 190-240 40- 52 20- 100 F1oodL F1oodH watertable Kind Months Bedrock Hardness NONE 2.0-3.0 APPARENT DEC -APR 60-60 Depth Texture 3-Inch No-10 ClayW -CEC- 0- 9 L FSL SIL 0- 0 95-100 7-27 - 0- 9 CL SICL SCL 0- 0 95-100 27-40 - 9-54 C SIC SICL 0- 0 95-100 35-60 - 54-80 CL SL LS 0- 0 95-100 5-35 - Depth -pH- O.M. Salin Permeab Shnk-Swll 0- 9 3.5- 6.5 .5-2. 0- 0 0.2- 2.0 LOW 0- 9 3.5- 5.5 .5-2. 0- 0 0.06- 0.2 MODERATE 9-54 3.5- 5.5 0.-0. 0- 0 0.06- 0.2 MODERATE 54-80 3.5- 5.5 0.-0. 0- 0 0.2- 6.0 LOW National Cooperative Soil Survey U.S.A. http://www2.ftw.nres.usda.gov/osd/dat/C/CRAVEN.html 12/11/2006 Official Series Description - DOGUE Series Page 1 of 5 LOCATION DOGUE VA+GA NC Established Series Rev. JHW-EPE-JAK 09/2006 DOGUE SERIES MLRA(s): 153A, 153B MLRA Office Responsible: Raleigh, North Carolina Depth Class: Very deep Drainage Class: Moderately well drained Permeability: Moderately slow Surface Runoff: Slow to rapid Parent Material: Clayey marine and fluviomarine sediments Slope: 0 to 15 percent Mean Annual Air Temperature (type location): 57 degrees F. Mean Annual Precipitation (type location): 39.5 inches TAXONOMIC CLASS: Fine, mixed, semiactive, thermic Aquic Hapludults TYPICAL PEDON: Dogue loam (Colors are for moist soil.) A--O to 4 inches; dark grayish brown (2.5Y 4/2) loam; moderate fine granular structure; very friable; many fine roots; few fine pores; strongly acid; clear smooth boundary. (2 to 4 inches thick) E-4 to 10 inches; light olive brown (2.5Y 5/4) loam; weak fine subangular blocky structure; friable; many fine and medium roots; few fine pores; strongly acid; clear smooth boundary. (0 to 8 inches thick) Bt1--10 to 14 inches; yellowish brown (I OYR 5/6) clay loam; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; common fine roots; few fine pores; few faint clay films on faces of peds; few fine flakes of mica; very strongly acid; clear smooth boundary. Bt2--14 to 24 inches; yellowish brown (1 OYR 5/6) clay; moderate fine angular blocky structure; firm; moderately sticky, moderately plastic; common fine roots; few fine pores; common distinct clay films on faces of peds; few fine flakes of mica; strongly acid; clear smooth boundary. Bt3--24 to 34 inches; yellowish brown (I OYR 5/6) clay loam; moderate medium angular blocky structure; firm, moderately sticky, moderately plastic; few fine roots; common medium faint strong brown (7.5YR 5/6) soft masses of iron accumulation and common medium prominent light brownish gray (I OYR 6/2) and gray (I OYR 511) iron depletions; common distinct clay films on faces of peds; common fine flakes of mica; very strongly acid; clear smooth boundary. Bt4--34 to 47 inches; multicolored strong brown (7.5YR 5/8), gray (1 OYR 511), and red (2.5YR 4/6) clay loam; moderate fine angular blocky structure; firm; moderately sticky, moderately plastic; few fine roots; few gray (1 OYR 511) clay films on faces of peds; common fine flakes of mica; very strongly acid; gradual smooth boundary. (Combined thickness of the Bt horizon is 25 to 50 inches.) http://www2.ftw.nres.usda.gov/osd/dat/D/DOGUE.html 12/ 11 /2006 Official Series Description - DOGUE Series Page 2 of 5 2C-47 to 65 inches; strong brown (7.5YR 5/6) stratified loamy fine sand and sandy loam; massive; very friable; many medium prominent light brownish gray (I OYR 6/2) iron depletions; common fine flakes of mica; very strongly acid. TYPE LOCATION: King George County, Virginia, 30 yards west of VA-631, 75 yards north of VA- 607. RANGE IN CHARACTERISTICS: Solum Thickness: 40 to 60 inches Depth to Bedrock: Greater than 60 inches Depth to Seasonal High Water Table: 18 to 36 inches, January to March Soil Reaction: extremely acid to strongly acid, except where limed Other Features: Rock fragments, usually rounded quartzite gravel, make up 0 to 15 percent of the solum and 0 to 25 percent of the C horizon. Few to common flakes of mica and grains of feldspar are in the B and C horizons. Average clay content in the particle size control section is 35 to 50 percent, and silt content is less than 30 percent, or silt plus very fine sand is less than 40 percent RANGE OF INDIVIDUAL HORIZONS: A or Ap horizon: Color --hue of I OYR or 2.5Y, value of 3to 6, and chroma of 2 to 4. Where value is 3, surface layer is less than 6 inches thick. Texture --loam, silt loam, fine sandy loam, very fine sandy loam, or sandy loam E horizon (if it occurs): Color --hue of I OYR or 2.5Y, value of 4 through 7, and chroma of 3 through 6 Texture --sandy loam, fine sandy loam, very fine sandy loam, loam, or silt loam BE or BA horizon (it if occurs): Color --hue of 7.5YR through or 2.5Y, value of 4 through 7, and chroma of 4 through 8 Texture --clay loam, sandy clay loam, or loam Bt horizon: Color --hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 3 to 8 Texture --is clay loam, sandy clay loam, sandy clay, or clay Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray Btg horizon (if it occurs): Color --hue of 7.5YR to 2.5Y or is neutral, value of 4 to 7, and chroma of 0 to 2 Texture --is clay loam, sandy clay loam, sandy clay, or clay Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray BC or CB horizon (if it occurs): Color --hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 3 to 8 Texture --sandy loam, sandy clay loam, clay loam, or sandy clay Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray http://www2.ftw.nres.usda.gov/osd/dat/D/DOGUE.html 12/11/2006 Official Series Description - DOGUE Series Page 3 of 5 The BCg or CBg horizon (if it occurs): Color --hue of 7.5YR to 2.5Y or is neutral, value of 4 to 7, and chroma of 0 to 2 Texture --sandy loam, sandy clay loam, clay loam, or sandy clay Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray C or 2C horizon (if it occurs): Color --has hue of 7.5YR to 2.5Y, value of 4 to 7, and chroma of 3 to 8 Texture --typically stratified and ranges from sand through sandy clay loam in the fine earth fraction Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray Cg or 2Cg horizon (if it occurs): Color --hue of 7.5YR to 2.5Y or is neutral, value of 4 to 7, and chroma of 0 to 2 Texture --typically stratified and ranges from sand through sandy clay loam in the fine earth fraction Redoximorphic features --iron masses in shades of brown, yellow, or red and iron depletions in shades of brown, olive, or gray COMPETING SERIES: Annemaine soils --have dominant hue redder than 7.5YR Beason soils --soils have more than 30 percent silt in the particle size control section Cid soils --have a lithic contact at a depth of 20 to 40 inches Craven soils --soils have more than 30 percent silt in the particle size control section Creedmoor soils --have very slow permeability in the Bt horizon Eulonia soils --have a dominantly gray lower Bt horizon and low shrink -swell potential Grim y soils --have a perched water table Helena soils --have a high shrink -swell potential in the lower part of the Bt horizon Lignum soils --have a solum 20 to 40 inches thick Maubila soils --have a perched water table and fragments of ironstone in the Bt horizon Nemours soils --have dominant hue redder than 7.5YR Nevarc soils --have a perched water table and are generally on steeper slopes Newco soils --have dominant hue redder than 7.5YR Peawick soils --have a high shrink -swell potential in the lower part of the Bt horizon, particle size control section has more than 30 percent silt or more than 40 percent silt plus very fine sand and aluminum ' saturation on the exchange complex is commonly greater than 50 percent Prosperity soils --have paralithic contact within a depth of 60 inches Sacul soils --have dominant hue redder than 7.5YR Telfair soils --depth to bedrock ranges from 20 to 40 inches Vinita soils --have a solum 20 to 40 inches thick Wolftever soils --soils have more than 30 percent silt in the particle size control section GEOGRAPHIC SETTING: Landscape: Middle and lower coastal plain Landform: Low stream and marine terraces Elevation: Less than 5 to 100 feet above mean sea level Parent Material: Clayey marine and fluviomarine sediments Mean Annual Air Temperature: 57 to 66 degrees Mean Annual Precipitation: 38 to 54 inches Frost Free Period: 175 to 260 days GEOGRAPHICALLY ASSOCIATED SOILS: http://www2.ftw.nres.usda.gov/osd/dat/D/DOGUE.html 12/ 11 /2006 Official Series Description - DOGUE Series Page 4 of 5 Bertie soils --Somewhat poorly drained soils (seasonal high water table 12 to 18 inches) in fine -loamy family on similar landscapes Bojac soils --well drained soils (seasonal high water table 48 to 72 inches) in coarse -loamy family on slightly higher landscapes Conetoe soils --well drained soils (seasonal high water table below 72 inches) in loamy family on slightly higher landscapes Dra =sg ton soils --somewhat poorly drained soils (seasonal high water table 0 to 12 inches) in coarse - loamy family on similar landscapes Gertie soils --poorly drained soils (seasonal high water table 0 to 12 inches) on flats and in depressions Munden soils --moderately well drained soils (seasonal high water table 18 to 30 inches) in coarse -loamy family on similar landscapes Chesapeake soils --well drained soils (seasonal high water table 48 to 72 inches) in fine -loamy family on higher landscapes Tarboro soils --somewhat excessively drained soils (seasonal high water table is below 6 feet) with sandy textures throughout on slightly higher landscapes Tetotum soils --moderately well drained soils (seasonal high water table 18 to 30 inches) in fine -loamy family on similar landscapes Tomotley soils --poorly drained soils (seasonal high water table 0 to 12 inches) on flats and in depressions Wahee soils --somewhat poorly drained soils (seasonal high water table 12 to 18 inches) on similar landscapes Yeopim soils --moderately well drained soils (seasonal high water table 18 to 36 inches) in fine -silty family on similar landscapes DRAINAGE AND PERMEABILITY: Agricultural Drainage Class: Moderately well drained Permeability: moderately slow Flooding: None on uplands. Soils on low stream terraces are subject to rare to occasional flooding. USE AND VEGETATION: Major Uses: Mostly cultivated Dominant Vegetation: Where cultivated --corn, small grain, soybeans, tobacco, peanuts, and truck crops. Where wooded-- mixed hardwoods and pines DISTRIBUTION AND EXTENT: Distribution: Virginia, North Carolina, and Georgia Extent: Moderate MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: King George County, Virginia, 1970. REMARKS: Diagnostic horizons and features recognized in this pedon are: Ochric epipedon - the zone from the surface to 10 inches (A and E horizons). Argillic horizon - The zone from 10 to 47 inches (Bt horizon). Aquic conditions - 2 chroma or less iron depletions within the upper 24 inches of the argillic horizon. SIR = VA0082 MLRA = 153A, 153B http://www2.ftw.nres.usda.gov/osd/dat/D/DOGUE.htm] 12/11 /2006 Official Series Description - DOGUE Series Page 5 of 5 REVISED = 4/24/06, DTA-restricted to less than 100 feet elevation ADDITIONAL DATA: TABULAR SERIES DATA: SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation VA0082 DOGUE 0- 15 57- 65 175-260 38- 54 5-100 SOI-5 FloodL F1oodH Watertable Kind Months Bedrock Hardness VA0082 NONE OCCAS 1.5-3.0 APPARENT JAN-MAR >60 SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- VA0082 0-10 L SIL VFSL 0- 0 75-100 5-15 3- 10 VA0082 0-10 FSL SL 0- 0 75-100 5-10 2- 6 VA0082 10-47 CL C SC 0- 0 75-100 35-50 8- 20 VA0082 47-65 SR S SCL 0- 0 60-100 5-30 1- 6 SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll VA0082 0-10 3.5- 5.5 .5-1. 0- 0 0.6- 2.0 LOW VA0082 0-10 3.5- 5.5 .5-1. 0- 0 2.0- 6.0 LOW VA0082 10-47 3.5- 5.5 0.-.5 0- 0 0.2- 0.6 MODERATE VA0082 47-65 3.5- 5.5 0.-.5 0- 0 0.6- 6.0 LOW National Cooperative Soil Survey U.S.A. http://www2.ftw.nrcs.usda.gov/osd/dat/D/DOGUE.html 12/11 /2006 DETENTION POND ANALYSIS (POND1-SMALL) STORMWATER PERMIT NUMBER: SW PROJECT NAME: BERTIE COUNTYDSS Drainage Basin: Roanoke 3.0 FT DEPTH ON POND - 90% TSS REMOVAL PERMANENT POOL SURFACE AREA (SA) (PROVIDED FROM PLAN CONTOURS-ELEV 18.5') DRAINAGE AREA TO POND (DA) SAIDA RATIO (SAIDA x 100) IMP AREA ALLOWED (FROM CHART) IMPERVIOUS AREA Class: C;SW PROPOSED 5466 SQ.FT. 67617 SQ.FT 8.08 69.28 PARKING AND DRIVE 18800 0 FUTURE ADDITION 27950 TOTAL 46750 SQ.FT. % IMP AREA 69.14 REQUIRED PERMANENT POOL SA 5452 SQ.FT. PROVIDED PERMANENT POOL SA 5466 SQ.FT. VOLUME CALCULATION BOTTOM ELEV. 15.5 PERMANENT POOL ELEV. 18.5 DESIGN POOL ELEV. 19.2 STORAGE DEPTH 0.7 FT. Rv 0.672 REQUIRED VOLUME (RV -DRAIN AREA) 3788 CU.FT. PROVIDED VOLUME 4124 CU.FT. ORIFICE CALCULATION AVG. HEAD 0.329 ft ESTIMATED FLOW FOR 2-DAY DRAWDOWN 0.0239 cfs ESTIMATED 2-DAY ORIFICE DIAMETER 1.26 inches ESTIMATED FLOW FOR 5-DAY DRAWDOWN 0.0095 cfs ESTIMATED 5-DAY ORIFICE DIAMETER 0.80 inches ENGINEER USES 1 inches FLOW (Q) 0.0151 cfs DRAWDOWN 3.17 days COMMENTS: SURFACE AREA, VOLUME AND ORIFICE ARE WITHIN DESIGN GUIDELINES 201E611 DETENTION POND ANALYSIS (POND2-LARGE) STORMWATER PERMIT NUMBER: SW PROJECT NAME: BERTIE COUNTY DSS Drainage Basin: Roanoke 4.0 FT DEPTH ON POND - 90% TSS REMOVAL PERMANENT POOL SURFACE AREA (SA) (PROVIDED FROM PLAN CONTOURS-ELEV 21.0') DRAINAGE AREA TO POND (DA) SA/DA RATIO (SA/DA x 100) % IMP AREA ALLOWED (FROM CHART) Class: C;SW PROPOSED 28348 SQ.FT. 442221 SQ.FT. 6.41 73.59 IMPERVIOUS AREA BUILDING 18579 PARKING AND DRIVE 53636 GRAVEL ROAD 0 SIDEWALKS 2962 FUTURE ADDITION 238307 FUTURE RESERVE 11500 TOTAL 324984 SQ.FT. % IMP AREA 73.49 REQUIRED PERMANENT POOL SA PROVIDED PERMANENT POOL SA PERMANENT POOL ELEV. DESIGN POOL ELEV. STORAGE DEPTH Rv REQUIRED VOLUME (RV -DRAIN AREA) PROVIDED VOLUME FICE 6.40 28287 SQ.FT. 28348 SQ.FT. 16.0 20.0 21 1 FT. 0.711 26216 CU.FT. 30405 CU.FT. ESTIMATED FLOW FOR2-DAYDRAWDOWN 0.1760 cfs ESTIMATED 2-DAY ORIFICE DIAMETER 3.18 inches ESTIMATED FLOW FOR 5-DAYDRAWDOWN 0.0704 cfs ESTIMATED 5-DAY ORIFICE DIAMETER 2 01 inches ENGINEER USES 3 inches FLOW (Q) 0.1563 cfs DRAW DOW N 2.25 days COMMENTS: SURFACE AREA, VOLUME AND ORIFICE ARE WITHIN DESIGN GUIDELINES DETENTION POND ELEVATION/AREAS (POND1-SMALL AND POND2-LARGE) PROJECT NAME: BERTIE COUNTYDSS DETENTION POND ELEVATION -AREA AND VOLUME DETENTION POND ELEVATION -AREA AND VOLUME POND#1 INCREMENTAL POND#1 INCREMENTAL ELEVATION AREA VOLUME VOLUME SUM ELEVATION AREA VOLUME VOLUME SUM (FT.) (ACRES) ACRE -FT.) (ACRE -FT.) FT.) (ACRES) (ACRE -FT.) ACRE -FT.) 18.5 0.126 0.00 0.00 FOREBAY 15.5 0.007 0.00 0.00 19.0 0.139 2878.09 2878.09 16.5 0.017 396.77 396.77 19.2 0.144 1232.81 4110.90 17.5 0.012 624.31 1021.08 20.0 0.165 5389.48 9500.38 18.5 0.035 1126.59 2147.67 21.0 0.189 7706.67 17207.05 MAIN POND 15.5 0.034 0.00 0.00 16.5 0.047 1762.82 1762.82 17.5 0.060 2311.27 4074.09 18.5 0.090 3265.61 7339.7 TOTAL VOLUME (ACRE -FT) 9487.37 FOREBAY PERCENT OF TOTAL VOLUME 22.64% POND#2 INCREMENTAL POND#2 INCREMENTAL ELEVATION AREA VOLUME VOLUME SUM ELEVATION AREA VOLUME VOLUME SUM (FT.) (ACRES) (ACRE -FT.) (ACRE -FT.) (FT.) (ACRES) (ACRE -FT.) (ACRE -FT.) 20.5 0.705 14764.39 14764.39 21.0 0.731 15640.99 30405.38 21.5 0.758 16215.98 46621.36 22.0 0.785 16798.62 63419.98 22.5 0.812 17388.77 80808.75 23.0 0.842 18009.95 98818.70 24.0 0.904 38014.23 136832.93 20106 20108 I 17.0 0.070 2695.63 2695.63 18.0 0.087 3433.06 6128.69 19.0 0.104 4161.11 10289.80 21.0 0.150 5549.60 15839.40 MAIN POND 16.0 0.276 0.00 0.00 17.0 0.320 12977.31 12977.31 18.0 0.364 14883.28 27860.59 19.0 0.409 16836.07 44696.66 20.0 0.500 19811.84 64508.50 TOTAL VOLUME (ACRE -FT) 80347.90 FOREBAY PERCENT OF TOTAL VOLUME 19.71%