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HomeMy WebLinkAbout20110041 Ver 1_Stormwater Info_20110112STORMWATER DETENTION AND NITROGEN EXPORT CALCULATIONS PROJECT Phase XI Annexation Area Pump Station Access Road Goldsboro, NC DEVELOPER City of Goldsboro 200 N. Center Street Goldsboro, NC 27533-9701 Contact: Rama Chitilla Tel. #919-580-4328 ENGINEER 2011 COX-EDWARDS COMPANY, INC. 1205 PARKWAY DRIVE GOLDSBORO, NC 27534 (Tel. # 919-751-5100) @t?H CA#NSS® 8 M : SSAL esq. 980181 °? O °OOOOOOOO°° 0® (It - ----- k Ek-x?a? EDWIN S. EDWARDS, PE #18081 TABLE OF CONTENTS Section Page Number Overview Peak Runoff Calculations 1 - 137 Nitrogen Export Calculations 138 - 139 Appendix 140 - 167 OVERVIEW The Phase XI Annexation - Pump Station Access Road project begins on the west side of Salem Church Road (NCSR 1300) and continues westward approximately 4570 linear feet to a pump station site. The property is located in Wayne County inside the City of Goldsboro municipal limits. The total area under consideration for the Stormwater Management plan on this project is the 3.10 acres of land labeled "property acquisition" for the access road. In the pre-development stage, 1.18 acres are wooded and 1.92 acres are considered managed. In the post-development stage, 1.17 acres become impervious (ABC stone roadway) and 1.93 acres will be managed areas. The project has a pre-development runoff rate of 2.92 cfs. The adjacent pump station site project, as engineered by Stearns & Wheler, has a pre-development stormwater runoff rate of 4.107 cfs (per City of Goldsboro) and a post-development runoff rate of 3.666 cfs (per City). The City has stated that the pump station access road project can be credited for the 0.441 cfs difference. The post-development runoff rate with stormwater detention devices in place is 3.36 cfs. This is 0.44 cfs over the pre- development amount but equal to the allowable difference. The access road side ditches are utilized for stormwater detention. Concrete headwalls are shown at the outlets of several drainage areas. The headwalls have small pipes protruding from the inlet side of the headwalls to reduce the flow rates. Notches are shown in the tops of the headwalls to allow rainfall events greater than the 1-year, 24-hour storm to bypass the detention areas. The nitrogen export calculations show a post-development rate of 27.121bs./yr. (8.75 lbs./ac./yr.). We are not required to install BMPs to reduce the nitrogen export since the total amount is less than 10.0 lbs./ac./yr. We have the option to pay an offset fee at the rate stated in the City's Stormwater Management Program for the difference between the nitrogen export amount and the 3.6 lbs./ac./yr. allowable, reduce the amount to or further toward 3.6 by using additional BMPs, or a combination thereof. No reductions are shown on this project. The required payment, paid into a mitigation bank, would be based on 478.80 lbs. per 30 years or 15.96 lbs. per year [(8.75-3.6) lbs./ac./yr. x 3.10 acres]. STORMWATER DETENTION AND NITROGEN EXPORT CALCULATIONS PEAK RUNOFF CALCULATIONS Peak Runoff Worksheet Phase XI - Pump Station Access Road Pre-Development Undisturbed Managed Impervious Total (u) (m) (1) (t) Area, A (acne) 1.18 1.92 0.00 3.10 C (weighted avg.) 0.2 0.3 0.9 C(w) _ ((0.2*A(u)+0.3*A(m)+.9*A(I))/A(t) C(w) = 0.26 Time of Concentration, TOC (min.) Height of most remote point above outlet H = 3.02 ft. Length (maximum) of stormwater travel L = 780 ft. TOC= [L**3/H)**0.385]/128 ** = subscript TOC = 11.18 Intensity, I I = 112420 + TOC) Quantity of Flow, Q (cfs) Q = A(t) * C(w) *1 3.59 Q = 2.92 (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 2. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" de yo Soy 66 s _ cs I Pr m 4 d a r N ? U VA , A-S - - cs ) s ? t C s CS , 6 o z Q, d - G Q r 4 4 73 S CS ) ' 37 14- 3 -7t4 2 - - MO O _ `? S 3 3 5 ro g f `? 3 0? `l 7 3 g 1 b $ 7 ?... 821 C b 10 4 , ? 5 3 602 , ? 5 '7 3 ?? (7 4-5 7 /6 7% 5- 1 6 4 o0 4 $ r? I1 z U. v o ? 9 ? 0 3 8 3 _ ? 3 3 26 h _G ? 5 3 91 c. Z 5 f 4g 4 2 9 13 I o tl / 0 4 7 S i4 I 7 v __ `1 g 1 -- 4 1U 6 - G 0 ?" 8 8 z" 4 1 - as r ? -- 8 ° - ? _o _ 1 6 ? b 2. r 2 ? 5? 0 4 i t, 5j ; l 2 :51 ,? - ) C . f a e ) q3 L ac ? 6 1, 7 c s Civil Engineering and Construction • Commercial and Residential Building (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 Fax (919) 751-1744 3 "Serving Wayne County and the Surrounding Area Since 1966" b, 2 a 86 F T. L ?. ( s +o UJ -+ ' f/ MA/I I _v T rl .q Z-? Il . I - u s-p- 5 ?l b o I I C -F D o +o C r8 i ? ?' T v ivy . - -- P a © 1 GV I Z 1r? S 6 vN j 1 i 4 (? Q4 O> D + 6 c p 4,v st ie N ? d a " e -- -- ?? - A _ wf , h -' I?C TO I day - 1B 1,0 , G'? S 6 -1 b l o - A d N r o ? k m S _ ? Ip { _ 04 a - tih 1 l Q - Q O ( r s C ?? a ? d? WO 0. - S p .. yip 4 4 - I}r C Civil Engineering and Construction • Commercial and Residential Building (919) 751-5100 Fax(919)751-1744 COX-EDWARDS COMPANY, INC. 9- 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" c-^-j ,._ .an.Lti- . t 4- ivn0 ra e_,1 5 ( o d CC) 4 s +. 0 s Z T 'V - S3 JT S + o, 5 )3 t v + ( o. o c nl = ? . z 1 00 B. ? _ 3. 3 -o z f .o ) 2 I r T ? t 'k ? 1 _ o u T I C 5 (0 3_/ 54 5(5 F l ...1 ?1 3 ( . 9 ? • 1 ? se Z1 _? + ,, 4 s a ti d o u ( {A ? c S o 0 TO AP N I A 2 5 e Civil Engineering and Construction • Commercial and Residential Building S PREDEVELOPMENT RUNOFF Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 2.92 CFS Time to Peak = 21.1 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.06 4 0.25 6 0.54 8 0.92 10 1.34 12 1.77 14 2.18 16 2.52 18 2.77 20 2.90 22 2.91 24 2.79 26 2.55 28 2.38 30 2.08 32 1.82 34 1.59 36 1.39 38 1.22 40 1.06 42 0.93 44 0.81 46 0.71 48 0.62 50 0.54 52 0.47 54 0.41 55 0.39 58 0.32 60 0.28 62 0.24 64 0.21 66 0.18 68 0.16 70 0.14 72 0.12 74 0.11 76 0.09 PREDEVELOPMENT RUNOFF 78 0.08 80 0.07 82 0.06 84 0.05 86 0.05 88 0.04 90 0.04 92 0.03 94 0.03 96 0.02 98 0.02 100 0.02 102 0.02 104 0.01 106 0.01 108 0.01 110 0.01 112 0.01 114 0.00 PREDEVELOPMENT RUNOFF Predevelopment Hydrograph 3.5 3.C 2.5 2.0 0 0 1.5 1.0 0.5 -? runoff 0.0 0 10 20 30 40 50 60 70 80 90 100 110 time (minutes) 7 (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. $ 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" D. 6 O .1 0, 16 o rG r/ 1, 3 l 1 8 Z f 2 # , '7 A o. G O ?G 0 = 0, 3 F s C 'h d -I u o a G?. ?o / S 7 3 f 6 3 ;1) C 1 •? o, v ° .l 4 " _ t! I I 0 ,) bl ?? 56 0 7l- G e. z s Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 1 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.36 CFS Time to Peak = 21.8 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.03 6 0.06 8 0.11 10 0.16 12 0.21 14 0.26 16 0.30 18 0.33 20 0.35 22 0.36 24 0.35 26 0.33 28 0.31 30 0.27 32 0.24 34 0.21 36 0.19 38 0.16 40 0.14 42 0.13 44 0.11 46 0.10 48 0.08 50 0.07 52 0.07 54 0.06 56 0.05 58 0.04 60 0.04 62 0.03 64 0.03 66 0.03 68 0.02 70 0.02 72 0.02 74 0.02 9 POSTDEVELOPMENT, UNDETAINED RUNOFF /d THROUGH DRAINAGE AREA 1 76 78 80 82 84 86 88 90 92 94 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.00 POSTDEVELOPMENT, UNDETAINED RUNOFF r' THROUGH DRAINAGE AREA 1 0.40 Postdevelopment - Undetained On-Site Runoff for Drainage Area 1 0.35 0.30 0.25 ?-runoff 0.20 0 L 0.15 0.10 0.05 0.00 0 20 40 60 80 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" /Z D. ? D, 9S 3 - -- - 3- 1 5 F _ P 0 e . A,et CA t du 3 N - 5 3 3? $2 12 .o 0 1 i 2 - ?i i 1 --- 20 ?- z rt 3 N C i 4 ( 4. 31 11 0 p. t5 - c s c S "Y4 .fl aj fi a, Q ?,n ? ?? - c ?i C a p et e m ? ea N 1 ? r w?.e l 6 ° Zq 6 5 - co ? ' p. IV 5-' 7 3 3 - 3. 2 - ( I I , i 58 ir 4 G o 1' I „? --- ( J. 9 0. 7 2" J c e G s Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 2 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.37 CFS Time to Peak = 22.5 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.03 6 0.06 8 0.10 10 0.15 12 0.20 14 0.25 16 0.30 18 0.33 20 0.36 22 0.37 24 0.37 26 0.35 28 0.32 30 0.30 32 0.26 34 0.23 36 0.20 38 0.18 40 0.16 42 0.14 44 0.12 46 0.11 48 0.10 50 0.08 52 0.07 54 0.07 56 0.06 58 0.05 60 0.05 62 0.04 64 0.03 66 0.03 68 0.03 70 0.02 72 0.02 74 0.02 ?3 (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 14 - -- G r -- t o +? a v ? c- e u S' } 5 i Q. ?' C7 4 5 + 9 a 1 i v, = 1 ?t, 5 (? Q 1? to ?. J _ . o ?_ 5 a pro 411 c+ ti 7. o ? r. c c 1 '# C) C -T V t (? 3 V ( C ; C O 0 o 8. o l y. Q-, 5 - L iq ? b = s ,? F 3 e I v -4?1 LS f l ) _ I 1 6 _ 5 g I' I 6 p. .0 9 o 0:5 ) ?: 5 ; .? T _ _ 0 -4 _g Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF Is FOR DETENTION AREA 2 Postdevelopment - Detained On-Site Runoff for Detention Area 2 0.40- 0.35- 0.30- noff 0.25- 0.20- 0 c L 0.15- 0.10 0.05- 0.00 0 20 40 60 time (minutes) ROUTING DETENTION AREA 2 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.37 CFS Time to Peak = 22.5 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.01 0 0 0.00 0.00 4 0.03 1 1 0.16 0.07 6 0.06 -5 0 0.00 0.00 8 0.10 7 7 0.35 0.06 10 0.15 5 12 0.42 0.07 12 0.20 10 23 0.52 0.08 14 0.25 15 38 0.63 0.08 16 0.30 21 59 0.73 0.09 18 0.33 25 84 0.83 0.10 20 0.36 29 112 0.92 0.10 22 0.37 31 143 1.00 0.11 24 0.37 32 175 1.08 0.11 26 0.35 31 206 1.14 0.11 28 0.32 28 234 1.19 0.11 30 0.30 24 259 1.24 0.12 32 0.26 22 280 1.27 0.12 34 0.23 17 298 1.30 0.12 36 0.20 14 311 1.32 0.12 38 0.18 10 321 1.34 0.12 40 0.16 7 329 1.35 0.12 42 0.14 4 333 1.35 0.12 44 0.12 2 335 1.36 0.12 46 0.11 0 335 1.36 0.12 48 0.10 -2 334 1.35 0.12 50 0.08 -3 331 1.35 0.12 52 0.07 -4 326 1.34 0.12 54 0.07 -6 320 1.34 0.12 56 0.06 -7 314 1.33 0.12 58 0.05 -8 306 1.31 0.12 60 0.05 -8 298 1.30 0.12 62 0.04 -9 289 1.29 0.12 64 0.03 -10 279 1.27 0.12 66 0.03 -10 269 1.26 0.12 68 0.03 -10 259 1.24 0.12 70 0.02 -11 248 1.22 0.12 72 0.02 -11 237 1.20 0.12 74 0.02 -11 226 1.18 0.11 76 0.02 -11 214 1.16 0.11 78 0.01 -12 203 1.13 0.11 80 0.01 -12 191 1.11 0.11 82 0.01 -12 179 1.09 0.11 84 0.01 -12 168 1.06 0.11 86 0.01 -12 156 1.03 0.11 i6 17 ROUTING DETENTION AREA 2 INFLOW 88 0.01 -12 144 1.01 0.11 90 0.01 -12 132 0.98 0.10 92 0.01 -12 121 0.94 0.10 94 0.01 -12 109 0.91 0.10 96 0.00 -11 98 0.88 0.10 98 0.00 -11 87 0.84 0.10 100 0.00 -11 75 0.80 0.09 102 0.00 -11 65 0.76 0.09 104 0.00 -11 54 0.71 0.09 106 0.00 -10 44 0.66 0.09 108 0.00 -10 34 0.60 0.08 110 0.00 -10 24 0.53 0.08 112 0.00 -9 15 0.45 0.07 114 0.00 -8 7 0.34 0.06 116 0.00 -7 0 0.00 0.00 DETENTION AREA 2 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.37 CFS Time to Peak Inflow = 22.5 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.01 0.00 4 0.03 0.07 6 0.06 0.00 8 0.10 0.06 10 0.15 0.07 12 0.20 0.08 14 0.25 0.08 16 0.30 0.09 18 0.33 0.10 20 0.36 0.10 22 0.37 0.11 24 0.37 0.11 26 0.35 0.11 28 0.32 0.11 30 0.30 0.12 32 0.26 0.12 34 0.23 0.12 36 0.20 0.12 38 0.18 0.12 40 0.16 0.12 42 0.14 0.12 44 0.12 0.12 46 0.11 0.12 48 0.10 0.12 50 0.08 0.12 52 0.07 0.12 54 0.07 0.12 56 0.06 0.12 58 0.05 0.12 60 0.05 0.12 62 0.04 0.12 64 0.03 0.12 66 0.03 0.12 68 0.03 0.12 70 0.02 0.12 72 0.02 0.12 74 0.02 0.11 76 0.02 0.11 to DETENTION AREA 2 78 0.01 0.11 80 0.01 0.11 82 0.01 0.11 84 0.01 0.11 86 0.01 0.11 88 0.01 0.11 90 0.01 0.10 92 0.01 0.10 94 0.01 0.10 96 0.00 0.10 98 0.00 0.10 100 0.00 0.09 102 0.00 0.09 104 0.00 0.09 106 0.00 0.09 108 0.00 0.08 110 0.00 0.08 112 0.00 0.07 114 0.00 0.06 116 0.00 0.00 I7 Zo DETENTION AREA 2 Inflow vs. Outflow Hydrograph Detention Area 2 0.4( 0.35 0.30 0.25 0.20 0 c 0 0.15 0.10 0.05 0.00 ------ ---------- ---- 0 10 20 30 40 50 60 70 80 90 100 110 time (minutes) inflow - - outflow (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. Z. I 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" r ?r v ? ?- o ?.? o ? ? 3 ?? 3 5 s 1 3. 0 Z o P L 2 ?i? 9a- ?z ,G ,C? N Id v w O _ ? Z. +1. b -+ eel _ 2 t %,0 4 A d• 54 ? 3, ?i d 0 I ?, C $ Us e c d + ?, C 9 I _ ? 4 51 .p S .0 Z5 p ,/ i _ /0 0 0 C N 77 .$ i , 0 3, 14 -- i ? , z o 0 5 r 4-3 , 5 o ?. ql - 4 ,1 -- Civil Engineering and Construction 0 Commercial and Residential Building Z 2- POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 3 (DA 3 only) Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.18 CFS Time to Peak = 24.9 Min. DA #3 Time Runoff (minutes) (CFS) 0 0.00 2 0.00 4 0.01 6 0.02 8 0.04 10 0.06 12 0.08 14 0.11 16 0.13 18 0.15 20 0.16 22 0.17 24 0.18 26 0.18 28 0.17 30 0.16 32 0.16 34 0.14 36 0.12 38 0.11 40 0.10 42 0.09 44 0.08 46 0.07 48 0.06 50 0.06 52 0.05 54 0.04 56 0.04 58 0.04 60 0.03 62 0.03 64 0.03 66 0.02 68 0.02 70 0.02 72 0.02 74 0.01 76 78 80 82 84 86 88 90 92 94 POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 3 (DA 3 only) 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 Z3 2 q-- POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 3 (DA 3 only) Postdevelopment - Detained On-Site Runoff for Drainage Area 3 (DA 3 only) 0.20 0.18 0.16 0.14 ?- runoff 0.12- q= 0.10 c L 0.08- 0.06- 0.04- 0.02- 0.00 10 11 0 20 40 60 80 time (minutes) (919) 751-5100 Fax (919) 751-1744 iii COX-EDWARDS COMPANY, INC. 2S 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" a? o a ?e 3 c (Q e S'f' v e_ o 95 -+41 -3 0 a1 ? 1 0 - U+ 1 C I 1 9. z C - I-. El- 0, - - o + u Z c ?a IDS t..1 z W -- St d o A C FT V I ( T3 al T 1=T 1Z .7 O ?p I C (A 0 1 IL -1 5 5 O. 2 4 -1 O? -- ---- - - - L -..- n s S - 11 01 G /0 S, A 34 S? ,2 -4 - r - ?7 0 $ 5 , X0 ,3 2.3 - -- - - - - r - ' _ U ? o @ 7 z . - Civil Engineering and Construction - Commercial and Residential Building ROUTING DETENTION AREA 3 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.18 CFS (DA 3 only) Time to Peak = 24.9 Min. (for DA 3) DAs 1,2,&4 Time DA 3 Inflow Inflow Change in Storage Stage Outflow (minutes) (CFS) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0.00 0 0 0.00 0.00 2 0.00 0.01 0 0 0.00 0.00 4 0.01 0.15 2 2 0.06 0.03 6 0.02 0.06 16 18 0.17 0.08 8 0.04 0.24 1 18 0.18 0.08 10 0.06 0.30 24 43 0.25 0.05 12 0.08 0.37 37 80 0.33 0.06 14 0.11 0.42 47 127 0.39 0.07 16 0.13 0.48 55 183 0.46 0.07 18 0.15 0.52 65 247 0.52 0.08 20 0.16 0.55 71 318 0.58 0.08 22 0.17 0.57 76 394 0.63 0.08 24 0.18 0.56 79 474 0.68 0.09 26 0.18 0.55 78 552 0.73 0.09 28 0.17 0.53 77 629 0.77 0.09 30 0.16 0.50 73 702 0.81 0.09 32 0.16 0.47 68 770 0.84 0.10 34 0.14 0.44 64 834 0.87 0.10 36 0.12 0.42 58 892 0.89 0.10 38 0.11 0.39 53 945 0.91 0.10 40 0.10 0.37 48 993 0.93 0.10 42 0.09 0.36 44 1,037 0.95 0 10 44 0.08 0.34 42 1,079 0.96 . 0.10 46 0.07 0.33 38 1,116 0.98 0 10 48 0.06 0.31 36 1,152 0.99 . 0.10 50 0.06 0.29 32 1,184 1.00 0 11 52 0.05 0.29 29 1,213 1.01 . 0 11 54 0.04 0.28 28 1,241 1.02 . 0 11 56 0.04 0.27 26 1,267 1.03 . 0 11 58 0.04 0.26 24 1,292 1.04 . 0 11 60 0.03 0.25 23 1,314 1.05 . 0 11 62 0.03 0.24 21 1,335 1.05 . 0 11 64 0.03 0.24 19 1,354 1.06 . 0 11 66 0.02 0.23 19 1,373 1.07 . 0 11 68 0.02 0.22 17 1,391 1.07 . 0 11 70 0.02 0.21 16 1,406 1.08 . 0 11 72 0.02 0.17 14 1,421 1.08 . 0 11 74 0.01 0.13 9 1,430 1.08 . 0 11 76 0.01 0.12 4 1,434 1.09 . 0 11 78 0.01 0.12 3 1,437 1.09 . 0 11 80 0.01 0.12 3 1,439 1.09 . 0 11 82 0.01 0.12 2 1,442 1.09 . 0 11 84 0.01 0.12 2 1,444 1.09 . 0.11 z( z? ROUTING DETENTION AREA 3 INFLOW 86 0.01 0.12 2 1,446 1.09 0.11 88 0.01 0.12 2 1,448 1.09 0.11 90 0.01 0.11 2 1,450 1.09 0.11 92 0.01 0.10 1 1,451 1.09 0.11 94 0.00 0.10 -1 1,451 1.09 0.11 96 0.00 0.10 -1 1,450 1.09 0.11 98 0.00 0.10 -1 1,449 1.09 0.11 100 0.00 0.09 -1 1,449 1.09 0.11 102 0.00 0.09 -2 1,447 1.09 0.11 104 0.00 0.09 -2 1,445 1.09 0.11 106 0.00 0.09 -2 1,443 1.09 0.11 108 0.00 0.08 -2 1,441 1.09 0.11 110 0.00 0.08 -3 1,437 1.09 0.11 112 0.00 0.07 -3 1,434 1.09 0.11 114 0.00 0.06 -5 1,429 1.08 0.11 116 0.00 0.00 -6 1,424 1.08 0.11 118 0.00 0.00 -13 1,411 1.08 0.11 120 0.00 0.00 -13 1,398 1.07 0.11 122 0.00 0.00 -13 1,385 1.07 0.11 124 0.00 0.00 -13 1,372 1.07 0.11 126 0.00 0.00 -13 1,359 1.06 0.11 128 0.00 0.00 -13 1,346 1.06 0.11 130 0.00 0.00 -13 1,333 1.05 0.11 132 0.00 0.00 -13 1,320 1.05 0.11 134 0.00 0.00 -13 1,307 1.04 0.11 136 0.00 0.00 -13 1,295 1.04 0.11 138 0.00 0.00 -13 1,282 1.04 0.11 140 0.00 0.00 -13 1,269 1.03 0.11 142 0.00 0.00 -13 1,256 1.03 0.11 144 0.00 0.00 -13 1,244 1.02 0.11 146 0.00 0.00 -13 1,231 1.02 0.11 148 0.00 0.00 -13 1,218 1.01 0.11 150 0.00 0.00 -13 1,205 1.01 0.11 152 0.00 0.00 -13 1,193 1.00 0.11 154 0.00 0.00 -13 1,180 1.00 0.11 156 0.00 0.00 -13 1,168 1.00 0.10 158 0.00 0.00 -13 1,155 0.99 0.10 160 0.00 0.00 -13 1,143 0.99 0.10 162 0.00 0.00 -13 1,130 0.98 0.10 164 0.00 0.00 -12 1,118 0.98 0.10 166 0.00 0.00 -12 1,105 0.97 0.10 168 0.00 0.00 -12 1,093 0.97 0.10 170 0.00 0.00 -12 1,080 0.96 0.10 172 0.00 0.00 -12 1,068 0.96 0.10 174 0.00 0.00 -12 1,056 0.95 0.10 176 0.00 0.00 -12 1,043 0.95 0.10 178 0.00 0.00 -12 1,031 0.95 0.10 180 0.00 0.00 -12 1,019 0.94 0.10 182 0.00 0.00 -12 1,006 0.94 0.10 184 0.00 0.00 -12 994 0.93 0.10 186 0.00 0.00 -12 982 0.93 0.10 188 0.00 0.00 -12 970 0.92 0.10 190 0.00 0.00 -12 958 0.92 0.10 192 0.00 0.00 -12 946 0.91 0.10 (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive iiE Goldsboro, NC 27534 Contractors License No. 5046 Fax (919) 751-1744 Zg "Serving Wayne County and the Surrounding Area Since 1966" ,? o. 3 a ,0 3 ' L J7 f is 6,0 a X2 8 J 04 II 11 2 ? 0. 54 ? ?- ? ) o 0 8 ? O, Z I c F I ? U e C 5 oQ f o flr w4 r •? f - a s ? S a ?- 4 so, C N C t1 04 S3 d 0 I , 7 .6 - ? O, of 3. 22, I - 0 0, 1 2 ( 8 l 1 F7 3 G it- 7'L I mo; --- P C ( ? _d . 2 ? _ I 1 a c ? _ G s4 , 7 431- Civil Engineering and Construction • Commercial and Residential Building ,9 POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 4 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.23 CFS Time to Peak = 19.9 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.02 6 0.05 8 0.08 10 0.12 12 0.15 14 0.18 16 0.21 18 0.22 20 0.23 22 0.22 24 0.21 26 0.19 28 0.17 30 0.15 32 0.13 34 0.11 36 0.09 38 0.08 40 0.07 42 0.06 44 0.05 46 0.05 48 0.04 50 0.03 52 0.03 54 0.03 56 0.02 58 0.02 60 0.02 62 0.01 64 0.01 66 0.01 68 0.01 70 0.01 72 0.01 74 0.01 76 0.01 78 0.00 30 POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 4 Postdevelopment - Detained On-Site Runoff for Detention Area 4 0.25 - - - 0.20- -runoff 0.15- v 0 c 0.10- 0.05- 0.00- 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 31 e tOv , 1,4 b, 2= 5t ?`? D 3 s I o v i ?? - - ! 2 -17.1 31 1 V. ho ? Cd r r f o to u A S+ ? o?n o r ( T ) 10 q t V lu ? T ( 7 f 2? $ Q ? d .a d o , 9 I o, g t 3 4 76 - o. f3 S ?5 a ? c O ,q ? I 5 S -ro ( r3 s rr CA -NN -- - -- 61 h 6 S D, ?? 0. 2 ? VbN 5 ` .. b - _ Co 3. ?u -a - - - -- - - - -- -- I I - Lk I --.? 01, -1 ? - dl Civil Engineering and Construction • Commercial and Residential Building 3 Z, ROUTING DETENTION AREA 4 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.23 CFS Time to Peak = 19.9 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.01 0 0 0.00 0.00 4 0.02 1 1 0.20 0.05 6 0.05 -3 0 0.00 0.00 8 0.08 6 6 0.39 0.07 10 0.12 2 7 0.43 0.07 12 0.15 6 13 0.51 0.08 14 0.18 9 22 0.61 0.08 16 0.21 12 35 0.70 0.09 18 0.22 15 49 0.79 0.09 20 0.23 16 65 0.86 0.10 22 0.22 16 81 0.92 0.10 24 0.21 15 95 0.98 0.10 26 0.19 12 108 1.01 0.11 28 0.17 10 118 1.05 0.11 30 0.15 7 126 1.07 0.11 32 0.13 4 130 1.08 0.11 34 0.11 2 132 1.08 0.11 36 0.09 0 132 1.08 0.11 38 0.08 -2 130 1.08 0.11 40 0.07 -3 127 1.07 0.11 42 0.06 -5 122 1.06 0.11 44 0.05 -6 117 1.04 0.11 46 0.05 -6 110 1.02 0.11 48 0.04 -7 103 1.00 0.11 50 0.03 -8 95 0.98 0.10 52 0.03 -8 87 0.95 0.10 54 0.03 -9 79 0.92 0.10 56 0.02 -9 70 0.88 0.10 58 0.02 -9 60 0.84 0.10 60 0.02 -9 51 0.80 0.09 62 0.01 -9 42 0.75 0.09 64 0.01 -9 33 0.69 0.09 66 0.01 -9 24 0.62 0.08 68 0.01 -9 15 0.54 0.08 70 0.01 -8 7 0.42 0.07 72 0.01 -7 0 0.11 0.03 74 0.01 -3 0 0.00 0.00 33 DETENTION AREA 4 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.23 CFS Time to Peak Inflow = 19.9 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.01 0.00 4 0.02 0.05 6 0.05 0.00 8 0.08 0.07 10 0.12 0.07 12 0.15 0.08 14 0.18 0.08 16 0.21 0.09 18 0.22 0.09 20 0.23 0.10 22 0.22 0.10 24 0.21 0.10 26 0.19 0.11 28 0.17 0.11 30 0.15 0.11 32 0.13 0.11 34 0.11 0.11 36 0.09 0.11 38 0.08 0.11 40 0.07 0.11 42 0.06 0.11 44 0.05 0.11 46 0.05 0.11 48 0.04 0.11 50 0.03 0.10 52 0.03 0.10 54 0.03 0.10 56 0.02 0.10 58 0.02 0.10 60 0.02 0.09 62 0.01 0.09 64 0.01 0.09 66 0.01 0.08 68 0.01 0.08 70 0.01 0.07 72 0.01 0.03 74 0.01 0.00 76 0.01 0.00 DETENTION AREA 4 Inflow vs. Outflow Hydrograph Detention Area 4 JOE v t 0 0 0.2'r 0.20 0.15 0.10 0.05 0.00 r --- - - - - - 0 10 20 30 40 50 60 70 time (minutes) inflow - - - outflow (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 3S o: V 6e 0 , U L ' 30 3 ?3 ?? l 2? l g 1 1Z _ ? i Z -r 2_ + . r .S ? ? ,q ? 11 5 = C1 -? ? c S i C - 5 0 c. ?? v ,. S -7 f 5 eol AAP 10 0C ) 14 5 (1 ,216 ) 11 ,0 3 3. 2j ? , T 3 y 5 0 F? C P ( , 3 1 ( ! - --- ?? G o Ste` . Fax (919) 751-1744 Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 5a Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.31 CFS Time to Peak = 19.3 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.03 6 0.07 8 0.11 10 0.16 12 0.21 14 0.26 16 0.29 18 0.31 20 0.31 22 0.30 24 0.27 26 0.25 28 0.21 30 0.18 32 0.16 34 0.14 36 0.12 38 0.10 40 0.09 42 0.08 44 0.07 46 0.06 48 0.05 50 0.04 52 0.04 54 0.03 56 0.03 58 0.02 60 0.02 62 0.02 64 0.02 66 0.01 68 0.01 70 0.01 72 0.01 74 0.01 36 POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 5a 76 0.01 78 0.01 80 0.00 82 0.00 84 0.00 86 0.00 88 0.00 90 0.00 92 0.00 94 0.00 96 0.00 98 0.00 100 0.00 102 0.00 104 0.00 106 0.00 108 0.00 110 0.00 37 3g POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 5a Postdevelopment - Detained On-Site Runoff for Drainage Area 5a 0.35 0.30 0.25 -? runoff 0.20- 0 c L 0.15- 0.10- 0.05- 0.00- 0 20 40 60 80 100 time (minutes) (919) 751-5100 Fax (919) 751-1744 iii COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 3? sT C . Dt F. I 4. 3 C eL v, 2 2, 13 - o -r A (F 2 V 4,. T ) V tv ( T a I, a O d• 1 v 3. 7 5 S Or C. `U S = IL O , 19 4 I. f $ ? b d. 41 Z ?a` 5f I r' `' e -?' 0 0. ? s 1 ? 2, 3311 ) l Civil Engineering and Construction • Commercial and Residential Building ROUTING DETENTION AREA 5a INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.31 CFS Time to Peak = 19.3 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.01 0 0 0.00 0.00 4 0.03 1 1 0.30 0.06 6 0.07 -3 0 0.00 0.00 8 0.11 8 8 0.75 0.09 10 0.16 3 11 0.85 0.10 12 0.21 8 19 1.08 0.11 14 0.26 12 31 1.34 0.12 16 0.29 16 48 1.59 0.13 18 0.31 19 66 1.84 0.14 20 0.31 20 86 2.05 0.15 22 0.30 19 105 2.24 0.16 24 0.27 17 122 2.38 0.16 26 0.25 13 134 2.49 0.17 28 0.21 10 144 2.56 0.17 30 0.18 5 149 2.60 0.17 32 0.16 2 151 2.61 0.17 34 0.14 -1 149 2.60 0.17 36 0.12 -4 145 2.57 0.17 38 0.10 -6 139 2.53 0.17 40 0.09 -8 131 2.46 0.16 42 0.08 -9 122 2.39 0.16 44 0.07 -10 112 2.30 0.16 46 0.06 -11 100 2.20 0.16 48 0.05 -12 89 2.08 0.15 50 0.04 -12 76 1.95 0.15 52 0.04 -13 64 1.81 0.14 54 0.03 -13 51 1.64 0.13 56 0.03 -12 39 1.46 0.13 58 0.02 -12 27 1.24 0.12 60 0.02 -11 15 0.98 0.10 62 0.02 -10 5 0.62 0.08 64 0.02 -8 0 0.00 0.00 1d (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" qI 0 AA 13 e3 5 1 ' 2_ 63 fi iz 3. ? Ort Z D-+ 3. - 1 A 4 91 (4 .6 ( •1 3 t c s d o 0. C A Yr g s 5 fi i'n V 14 N = 9 ? 0, 41 a .o - ? 0 33 5 0 3 ? _ t 7 Z T - t o x 13 35 -, S o fT - - 3 q (' 04 ? _ )2- " - ? - - i i - I 9 z V41, ? - - -- Fax (919) 751-1744 Civil Engineering and Construction • Commercial and Residential Building 4z POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 5b Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.31 CFS Time to Peak = 19.2 Min. DA 5b (includes DA 5a) Time Runoff Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.01 0.01 4 0.03 0.09 6 0.07 0.07 8 0.11 0.20 10 0.17 0.27 12 0.21 0.32 14 0.26 0.38 16 0.29 0.42 18 0.31 0.45 20 0.31 0.46 22 0.29 0.45 24 0.26 0.42 26 0.24 0.41 28 0.21 0.38 30 0.18 0.35 32 0.16 0.33 34 0.13 0.30 36 0.12 0.29 38 0.10 0.27 40 0.09 0.25 42 0.07 0.23 44 0.06 0.22 46 0.06 0.22 48 0.05 0.20 50 0.04 0.19 52 0.04 0.18 54 0.03 0.16 56 0.03 0.16 58 0.02 0.14 60 0.02 0.12 62 0.02 0.10 64 0.01 0.01 66 0.01 0.01 68 0.01 0.01 70 0.01 0.01 72 0.01 0.01 74 0.01 0.01 76 0.01 0.01 78 0.01 0.01 80 0.01 0.00 POSTDEVELOPMENT, UNDETAINED RUNOFF 4-3 THROUGH DRAINAGE AREA 5b Postdevelopment - Undetained On-Site Runoff for Drainage Area 5b 0.50 - 0.45 0.40 0.35 + runoff 0.30- 0.25- 0 c L 0.20- 0.15- 0.10- 0.05- 0.00- 0 20 40 60 80 time (minutes) (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive ii4 Goldsboro, NC 27534 Contractors License No. 5046 Fax (919) 751-1744 49- "Serving Wayne County and the Surrounding Area Since 1966" - 7 0 4 o. 6- 3 o , Q. 11* 2 ,6 a (1 5 G 1 ? Z ? I 2 rt _ 0 7 r - = C d • S? , q I? n'r l , = O 1?? F se c k f 1 ? M U I ( ? C 4'4 _77 - 3 .3 - 0. 2 3. z I - - - ? - - -- - 5 LL S t. ' 3 . T1 0. 2.9 b e 1 1 F 1" I 4 3 i - -- 5 ( ----- p -- F -- ! ( ---- Ick w. ?. _ - - - Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 6a Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.30 CFS Time to Peak = 19.8 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.03 6 0.06 8 0.11 10 0.15 12 0.20 14 0.24 16 0.27 18 0.29 20 0.30 22 0.29 24 0.27 26 0.25 28 0.22 30 0.19 32 0.16 34 0.14 36 0.12 38 0.11 40 0.09 42 0.08 44 0.07 46 0.06 48 0.05 50 0.04 52 0.04 54 0.03 56 0.03 58 0.03 60 0.02 62 0.02 64 0.02 66 0.01 68 0.01 70 0.01 72 0.01 74 0.01 4s (D POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 6a 76 78 80 82 84 86 88 90 92 94 0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4? POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DRAINAGE AREA 6a Postdevelopment - Detained On-Site Runoff for Drainage Area 6a 0.35 0.30- 0.25- 0.20- c 0.15 0 i 0.10- 0.05- 0.00- 0 20 40 60 80 time (minutes) 48 ROUTING DETENTION AREA 6a INFLOW coefficient of discharge = 0.60 gravity = 32. 2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.3 CFS Time to Peak = 19.8 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.01 0 0 0.00 0.00 4 0.03 1 1 0.29 0.06 .6 0.06 -3 0 0.00 0.00 8 0.11 8 8 0.73 0.09 10 0.15 2 9 0.80 0.09 12 0.20 7 16 1.01 0.11 14 0.24 11 28 1.26 0.12 16 0.27 15 42 1.52 0.13 18 0.29 17 60 1.76 0.14 20 0.30 19 78 1.97 0.15 22 0.29 18 97 2.16 0.15 24 0.27 16 113 2.31 0.16 26 0.25 13 126 2.42 0.16 28 0.22 10 136 2.50 0.17 30 0.19 6 142 2.55 0.17 32 0.16 2 145 2.57 0.17 34 0.14 -1 144 2.56 0.17 36 0.12 -3 141 2.54 0.17 38 0.11 -5 135 2.49 0.17 40 0.09 -7 128 2.44 0.16 42 0.08 -9 119 2.36 0.16 44 0.07 -10 109 2.28 0.16 46 0.06 -11 99 2.18 0.16 48 0.05 -11 87 2.07 0.15 50 0.04 -12 75 1.94 0.15 52 0.04 -12 63 1.80 0.14 54 0.03 -12 51 1.64 0.13 56 0.03 -12 39 1.46 0.13 58 0.03 -12 27 1.25 0.12 60 0.02 -11 16 0.99 0.10 62 0.02 -10 6 0.65 0.08 64 0.02 -8 0 0.00 0.00 (919) 751-5100 Fax (919) 751-1744 iii COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" i? . o , 4 6 p, $ a O, M20 (o f o Luc ?tj L" _ J L Z2 i4 .3t ?i .5 I 1 ? !! L i i C s CS ?q ? C a. Z G? . 0. 3 r C 4z _ 0- 64 4, p, g o ° 01 1 !v a, r2. 6 ` _ - o. z 3 G4 - - -' - ? .6z + , a_ o 8 ?2 6, - IT I - - - j ? - 6 T J V\. Civil Engineering and Construction - Commercial and Residential Building so POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 6b Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.33 CFS Time to Peak = 17.7 Min. Time (minutes) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 DA 6b (includes DA 6a) Runoff Runoff (CFS) (CFS) 0.00 0.00 0.01 0.01 0.04 0.10 0.09 0.09 0.14 0.23 0.20 0.29 0.25 0.36 0.30 0.42 0.32 0.45 0.33 0.47 0.32 0.47 0.28 0.43 0.26 0.42 0.24 0.38 0.19 0.36 0.16 0.33 0.14 0.31 0.12 0.29 0.10 0.27 0.08 0.24 0.07 0.23 0.06 0.22 0.05 0.21 0.04 0.20 0.04 0.19 0.03 0.18 0.03 0.17 0.02 0.15 0.02 0.15 0.02 0.14 0.01 0.11 0.01 0.09 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 si POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 6b Postdevelopment - Undetained On-Site Runoff for Drainage Area 6b 0.50 0.45- 0.40- 0.35- 0.30- w 0.25- 0 c 0.20- 0.15- 0.10- 0.05- 0.00- 0 20 40 60 80 time (minutes) (919) 751-5100 Fax (919) 751-1744 11 COX-EDWARDS COMPANY, INC. S-2- 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" S+ ,? - A'a t i- 0. 14 o. 17 0. 2-1 r - 37 1 _ ?1 3 iz .3a t ?, ? lz l 8 2- * Z I 1 ?! ( 1-7 - S c 5 V e 5c 5 -" 4-U LV4 O er w, i e - - C o d? ?? s ? e o? n/ - g ( o l a 9 c ? 0 ,S1 71 12. - - - - -? 3. 3 0. 2 3. q - - ? 3 3 + 3 I - W! A El - - ------ Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 7 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.55 CFS Time to Peak = 17.8 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.02 4 0.07 6 0.14 8 0.23 10 0.33 12 0.42 14 0.49 16 0.54 18 0.55 20 0.53 22 0.48 24 0.44 26 0.37 28 0.32 30 0.27 32 0.23 34 0.20 36 0.17 38 0.14 40 0.12 42 0.10 44 0.09 46 0.08 48 0.06 50 0.05 52 0.05 54 0.04 56 0.03 58 0.03 60 0.02 62 0.02 64 0.02 66 0.02 68 0.01 70 0.01 72 0.01 74 0.01 76 0.01 78 0.01 80 0.00 53 POSTDEVELOPMENT, UNDETAINED RUNOFF 54 THROUGH DRAINAGE AREA 7 Postdevelopment - Undetained On-Site Runoff for Drainage Area 7 0.60 0.50- 0.40- -+- runoff v 0.30 0 c L 0.20- 0.10- 0.00 0 20 40 60 80 time (minutes) (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 5S +o , i 0 70 3 .2 3 v, H _ q l ( 1,3 0 - 103. g t,3? 1 8 I z 8 ?, 11 2_ !2 O I D ( v A 4 4 )( 5. 3 ) 0 2 Z ? 1 c s CO ) z I l a CA t c 43 > 5 6 o1I C- 4 ( w(a D. k^ki ?d N - - I - 1 --' -- ? ` m o. 3 1 (1 0 Q:1 (b i 3 .3 - 3, z I C o o. 23 1 ?= 7- oe 4 3 y1 . Fax (919) 751-1744 Civil Engineering and Construction • Commercial and Residential Building SG POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 8 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.57 CFS Time to Peak = 17.7 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.02 4 0.07 6 0.15 8 0.24 10 0.34 12 0.44 14 0.51 16 0.56 18 0.57 20 0.55 22 0.49 24 0.45 26 0.38 28 0.32 30 0.28 32 0.23 34 0.20 36 0.17 38 0.15 40 0.12 42 0.11 44 0.09 46 0.08 48 0.07 50 0.06 52 0.05 54 0.04 56 0.03 58 0.03 60 0.02 62 0.02 64 0.02 66 0.02 68 0.01 70 0.01 72 0.01 74 0.01 76 0.01 78 0.01 80 0.00 POSTDEVELOPMENT, UNDETAINED RUNOFF 5-7 THROUGH DRAINAGE AREA 8 0.60 Postdevelopment - Undetained On-Site Runoff for Drainage Area 8 0.50 0.40 0.30 0 L 0.20 0.10 0.00 -?-runoff 0 20 40 60 80 time (minutes) s1? POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 9 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.24 CFS Time to Peak = 9.14 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.03 4 0.10 6 0.18 8 0.23 10 0.23 12 0.20 14 0.15 16 0.11 18 0.08 20 0.06 22 0.04 24 0.03 26 0.02 28 0.02 30 0.01 32 0.01 34 0.01 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 9 0.2 Postdevelopment - Detained On-Site Runoff for Detention Area 9 0.20 0.15 t 0 c 0 L 0.10 0.05 0 20 40 time (minutes) 0.00 60 G? '00 Fax(919)751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive E Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" _ a? C b u C f 5 be u <+ o t4 zk-? 3 w :k i l U L 1 : V r 4 0 e le 1 014 1 Al I Z - '1` O. I ?? s to .,? r In ? 1 , ^] ? I nl ono Cc r e a A e.?? ?? o,? o A T 01 F 3 V oj T3 ( O 11 O Q O U 11 ,0 2 it l t . 9' 4 4 v&C IC S S? ~ 7- I n / I n 6, 2 6. z) .61 >L / - - O n tA I z I 'f "J S Civil Engineering and Construction • Commercial and Residential Building 62- ROUTING DETENTION AREA 9 INFLOW coefficient of discharge = 0.60 gravity = 32.2 fVsec orifice size = 2 in. dia. Peak Flow = 0.24 CFS Time to Peak = 9.14 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.03 0 0 0.00 0.00 4 0.10 3 3 0.23 0.05 6 0.18 6 9 0.34 0.06 8 0.23 14 23 0.48 0.07 10 0.23 19 42 0.60 0.08 12 0.20 18 60 0.69 0.09 14 0.15 13 74 0.75 0.09 16 0.11 7 80 0.77 0.09 18 0.08 2 82 0.78 0.09 20 0.06 -2 80 0.77 0.09 22 0.04 -4 76 0.76 0.09 24 0.03 -6 70 0.73 0.09 26 0.02 -7 63 0.70 0.09 28 0.02 -8 55 0.67 0.09 30 0.01 -8 47 0.63 0.08 32 0.01 -9 39 0.59 0.08 34 0.01 -9 30 0.53 0.08 36 0.00 -8 22 0.47 0.07 38 0.00 -8 13 0.39 0.07 40 0.00 -7 6 0.29 0.06 42 0.00 -6 0 0.00 0.00 DETENTION AREA 9 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.24 CFS Time to Peak Inflow = 9.14 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.03 0.00 4 0.10 0.05 6 0.18 0.06 8 0.23 0.07 10 0.23 0.08 12 0.20 0.09 14 0.15 0.09 16 0.11 0.09 18 0.08 0.09 20 0.06 0.09 22 0.04 0.09 24 0.03 0.09 26 0.02 0.09 28 0.02 0.09 30 0.01 0.08 32 0.01 0.08 34 0.01 0.08 36 0.00 0.07 38 0.00 0.07 40 0.00 0.06 42 0.00 0.00 44 0.00 0.00 46 0.00 0.00 48 0.00 0.00 50 0.00 0.00 52 0.00 0.00 54 0.00 0.00 56 0.00 0.00 58 0.00 0.00 60 0.00 0.00 62 0.00 0.00 64 0.00 0.00 66 0.00 0.00 68 0.00 0.00 70 0.00 0.00 72 0.00 0.00 74 0.00 0.00 76 0.00 0.00 64 DETENTION AREA 9 Inflow vs. Outflow Hydrograph Detention Area 9 0.25 0.20 0.15 U 0 c inflow - - - - outflow 0.10 0.05 0.00 0 10 20 30 40 50 60 70 time (minutes) Gs POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 10 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.24 CFS Time to Peak = 9.14 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.03 4 0.10 6 0.18 8 0.23 10 0.23 12 0.20 14 0.15 16 0.11 18 0.08 20 0.06 22 0.04 24 0.03 26 0.02 28 0.02 30 0.01 32 0.01 34 0.01 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 POSTDEVELOPMENT, DETAINED RUNOFF FOR DETENTION AREA 10 Postdevelopment - Detained On-Site Runoff for Detention Area 10 0.25- 0.20- noff 0.15- v 0 L 0.10- 0.05- 0.00- 0 20 40 60 time (minutes) (-07 ROUTING DETENTION AREA 10 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia Peak Flow = 0.24 CFS Time to Peak = 9.14 Min. Time Inflow Change in Storage Stage outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.03 0 0 0.00 0.00 4 0.10 3 3 0.23 0.05 6 0.18 6 9 0.34 0.06 8 0.23 14 23 0.48 0.07 10 0.23 19 42 0.60 0.08 12 0.20 18 60 0.69 0.09 14 0.15 13 74 0.75 0.09 16 0.11 7 80 0.77 0.09 18 0.08 2 82 0.78 0.09 20 0.06 -2 80 0.77 0.09 22 0.04 -4 76 0.76 0.09 24 0.03 -6 70 0.73 0.09 26 0.02 -7 63 0.70 0.09 28 0.02 -8 55 0.67 0.09 30 0.01 -8 47 0.63 0.08 32 0.01 -9 39 0.59 0.08 34 0.01 -9 30 0.53 0.08 36 0.00 -8 22 0.47 0.07 38 0.00 -8 13 0.39 0.07 40 0.00 -7 6 0.29 0.06 42 0.00 -6 0 0.00 0.00 DETENTION AREA 10 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.24 CFS Time to Peak Inflow = 9.14 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.03 0.00 4 0.10 0.05 6 0.18 0.06 8 0.23 0.07 10 0.23 0.08 12 0.20 0.09 14 0.15 0.09 16 0.11 0.09 18 0.08 0.09 20 0.06 0.09 22 0.04 0.09 24 0.03 0.09 26 0.02 0.09 28 0.02 0.09 30 0.01 0.08 32 0.01 0.08 34 0.01 0.08 36 0.00 0.07 38 0.00 0.07 40 0.00 0.06 42 0.00 0.00 44 0.00 0.00 46 0.00 0.00 48 0.00 0.00 50 0.00 0.00 52 0.00 0.00 54 0.00 0.00 56 0.00 0.00 58 0.00 0.00 60 0.00 0.00 62 0.00 0.00 64 0.00 0.00 66 0.00 0.00 68 0.00 0.00 70 0.00 0.00 72 0.00 0.00 74 0.00 0.00 76 0.00 0.00 G8 r., g DETENTION AREA 10 Inflow vs. Outflow Hydrograph Detention Area 10 0.25 0.20 0.15 t 0 c inflow - - - - outflow 0.10 0.05 0.00 0 10 20 30 40 50 60 70 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARD5 COMPANY, INC. 7a 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 0 a Z 2- 77, _ _ F Iwa e MI , ?. $ Z L V S q i 1 A 0, 3 ( L = 0. Si C r s e C _ 5 I V4 4 k b a t?R Q ,M. -%,Aj , $0 u 4.4 0; Q e o 3 1 T ?__ . E4 4 , 1 ? c I w G. 22 L 2L ' ev, _ _S_ _ 1 _ 3 0. 2 6. 2 4 I ?, f, -- - ?? S 6 2 2 -r 4 G T !- x 6 c) Civil Engineering and Construction • Commercial and Residential Building 7/ POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 11 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.51 CFS Time to Peak = 9.66 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.05 4 0.19 6 0.35 8 0.47 10 0.51 12 0.44 14 0.35 16 0.26 18 0.19 20 0.14 22 0.11 24 0.08 26 0.06 28 0.04 30 0.03 32 0.02 34 0.02 36 0.01 38 0.01 40 0.01 42 0.01 44 0.00 46 0.00 48 0.00 50 0.00 52 O.b0 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 1 2- POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 11 Postdevelopment - Detained On-Site Runoff for Detention Area 11 0.6 0.5 0.4 -?-runoff w V t: 0.3- 0 c L 0.2 0.1 0.0 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 iii COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 73 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" ?ez - 11 4, 4 e e? , io o ? a to T.? al A i'd s ?. o Q (F Z el C 7 al FT 3 -177 O t D I c ?a S ?< b 5 S ?o.r ( ?7 Z? to 1) - n C O Z tj /0 ,11 Civil Engineering and Construction - Commercial and Residential Building ROUTING DETENTION AREA 11 INFLOW 74 coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 3 in. dia. Peak Flow = 0.51 CFS Time to Peak = 9.66 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.05 0 0 0.00 0.00 4 0.19 6 6 0.46 0.16 6 0.35 3 9 0.53 0.17 8 0.47 21 31 0.79 0.21 10 0.51 32 62 1.01 0.24 12 0.44 32 95 1.17 0.26 14 0.35 22 117 1.26 0.27 16 0.26 10 127 1.30 0.27 18 0.19 -1 126 1.29 0.27 20 0.14 -9 117 1.26 0.27 22 0.11 -14 103 1.20 0.26 24 0.08 -18 84 1.13 0.25 26 0.06 -20 64 1.02 0.24 28 0.04 -21 43 0.89 0.22 30 0.03 -21 21 0.70 0.20 32 0.02 -20 1 0.28 0.12 34 0.02 -12 0 0.00 0.00 75 DETENTION AREA II Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = Time to Peak Inflow = 0.51 9.66 CFS Min. Time (minutes) Inflow to Detention Pond (CFS) Detention Pond Runoff (CFS) 0 0.00 0.00 2 0.05 0.00 4 0.19 0.16 6 0.35 0.17 8 0.47 0.21 10 0.51 0.24 12 0.44 0.26 14 0.35 0.27 16 0.26 0.27 18 0.19 0.27 20 0.14 0.27 22 0.11 0.26 24 0.08 0.25 26 0.06 0.24 28 0.04 0.22 30 0.03 0.20 32 0.02 0.12 34 0.02 0.00 36 0.01 0.00 38 0.01 0.00 40 0.01 0.00 42 0.01 0.00 44 0.00 0.00 46 0.00 0.00 48 0.00 0.00 50 0.00 0.00 52 0.00 0.00 54 0.00 0.00 56 0.00 0.00 58 0.00 0.00 60 0.00 0.00 62 0.00 0.00 64 0.00 0.00 66 0.00 0.00 68 0.00 0.00 70 0.00 0.00 72 0.00 0.00 74 0.00 0.00 76 0.00 0.00 0.61 0.50 0.40 0.30 0 0 L 0.20 0.10 0.00 DETENTION AREA 11 Inflow vs. Outflow Hydrograph Detention Area 11 0 10 20 30 40 50 60 70 time (minutes) =inflow >6 (919) 751-5100 Fax(919)751-1744 COX-EDWARDS COMPANY, INC. 77 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" v. 1 2 I IZ CI o T 2 1 I G = ( A o. !94 , e 4. 34 `(1 , L ,,5 r- 5 U s s '? o ?"° Q v o? ??t ?? i N 3 0 e w, S Q A 1 a s S 7 A oil t 3 3 40 . ?, 3 4 -+ ( , o? i T 3 56 12 , Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 12 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.52 CFS Time to Peak = 8.54 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.07 4 0.23 6 0.41 8 0.51 10 0.48 12 0.38 14 0.27 16 0.20 18 0.14 20 0.10 22 0.07 24 0.05 26 0.04 28 0.03 30 0.02 32 0.01 34 0.01 36 0.01 38 0.01 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 7g POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 12 0 0.5 0.4 w 0.3 0 C 0 L 0.2 0.1 0.0 Postdevelopment - Detained On-Site Runoff for Detention Area 12 0 20 40 60 time (minutes) 80 79 C q0 ROUTING DETENTION AREA 12 INFLOW coefficient of discharge = 0. 60 gravity = 32.2 ft/sec orifice size = 2.5 in. dia. Peak Flow = 0.52 CFS Time to Peak = 8.54 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.07 0 0 0.00 0.00 4 0.23 8 8 0.50 0.12 6 0.41 14 22 0.71 0.20 8 0.51 26 48 0.93 0.23 10 0.48 34 83 1.12 0.25 12 0.38 28 111 1.24 0.26 14 0.27 14 125 1.29 0.27 16 0.20 0 125 1.29 0.27 18 0.14 -9 116 1.26 0.27 20 0.10 -15 101 1.20 0.26 22 0.07 -19 82 1.12 0.25 24 0.05 -21 61 1.01 0.24 26 0.04 -22 39 0.86 0.22 28 0.03 -22 17 0.65 0.19 30 0.02 -20 0 0.00 0.00 DETENTION AREA 12 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = Time to Peak Inflow = 0.52 8.54 CFS Min. Time (minutes) Inflow to Detention Pond (CFS) Detention Pond Runoff (CFS) 0 0.00 0.00 2 0.07 0.00 4 0.23 0.12 6 0.41 0.20 8 0.51 0.23 10 0.48 0.25 12 0.38 0.26 14 0.27 0.27 16 0.20 0.27 18 0.14 0.27 20 0.10 0.26 22 0.07 0.25 24 0.05 0.24 26 0.04 0.22 28 0.03 0.19 30 0.02 0.00 32 0.01 0.00 34 0.01 0.00 36 0.01 0.00 38 0.01 0.00 40 0.00 0.00 42 0.00 0.00 44 0.00 0.00 46 0.00 0.00 48 0.00 0.00 50 0.00 0.00 52 0.00 0.00 54 0.00 0.00 56 0.00 0.00 58 0.00 0.00 60 0.00 0.00 62 0.00 0.00 64 0.00 0.00 66 0.00 0.00 68 0.00 0.00 70 0.00 0.00 72 0.00 0.00 74 0.00 0.00 76 0.00 0.00 81 DETENTION AREA 12 Inflow vs. Outflow Hydrograph Detention Area 12 0.60 0.50 0.40 c 0.30 0.20 0.10 0.00 inflow - - - - outflow 82, 0 10 20 30 40 50 60 70 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 83 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" -f .' Ak j 0171 v 0' 0 , 4, cn? G o a ' r4 _ 3 x ? Q 4 .U z4 o. I -0 41 - E: o Z , - - 2- 1 11 GL T r z - _ r r ?r Z z ?6 - C r lo s 5, 5 o .o t , - a z c r? G d 0 + w of e - `,i Gc, a t ? - 0. 01 G 4 `j `° A 0 04 rS 0 .0 1 C - G 2. _ - _ ( •S S X6 0 15 ? 5 66 - rl -- - - - - - -- --? r, 3 q r _ , , - a e 6 0 4 ?. L - - - - - -- -1 -- s F Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 13 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.12 CFS Time to Peak = 8.24 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.02 4 0.06 6 0.10 8 0.12 10 0.11 12 0.08 14 0.06 16 0.04 18 0.03 20 0.02 22 0.01 24 0.01 26 0.01 28 0.01 30 0.00 32 0.00 34 0.00 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 81 POSTDEVELOPMENT, UNDETAINED RUNOFF Rs THROUGH DRAINAGE AREA 13 0.1 Postdevelopment - Undetained On-Site Runoff for Drainage Area 13 0.12 0.10 -?--runoff 0.08 w 0 ?- 0.06 0.04 0.02 0.00 0 20 40 60 time (minutes) (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 Fax (919) 751-1744 86 "Serving Wayne County and the Surrounding Area Since 1966" + C ty p 0 • 11,4 0 0 36 _ ).0 4 0. 4 1- 4 P. *,/ It, T -L ii 17, t7, c OC ° t i o ?.9 I I A X0 .6 ( .ll ( 01 4 c F fAA 3 c S o nn ?t cm dC ?C v? S J 7S 3. So © b 6 i3 0. 0k p U ?o 0 ov X 0.1 ! t'` c r 66 Stc Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 14 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.11 CFS Time to Peak = 9.02 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.05 6 0.08 8 0.11 10 0.11 12 0.09 14 0.07 16 0.05 18 0.03 20 0.03 22 0.02 24 0.01 26 0.01 28 0.01 30 0.01 32 0.00 34 0.00 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 87 POSTDEVELOPMENT, UNDETAINED RUNOFF 88 THROUGH DRAINAGE AREA 14 Postdevelopment - Undetained On-Site Runoff for Drainage Area 14 0.12- 0.10- 0.08- noff 0.06- 0 c 0.04 0.02 0.00 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 89 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" 16 inn 1 ? ?/ v? ? a ,? LS .o v1 1 0 3(, d, v3 6 v. -V mri A o3 ?ri L d ?( $, 1-7 - I 1 .2 I 12. 1 z_ b4 T I( 0. 7 S S 0 .0 3 6 = . o r U se C d } a ,? I e6dv ! G U II - ?1 Eo o ' i --? 3 a 3 ? _ 03 ) 2° So r ? -- - -- - _ VA A, U 0. 3 a , a i °? 6Q spy Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 15 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.01 CFS Time to Peak = 4.65 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.00 4 0.01 6 0.01 8 0.00 10 0.00 12 0.00 14 0.00 16 0.00 18 0.00 20 0.00 22 0.00 24 0.00 26 0.00 28 0.00 30 0.00 32 0.00 34 0.00 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 90 POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 15 Postdevelopment - Undetained On-Site Runoff for Drainage Area 15 0.012 0.010 0.008 ?-runoff c 0.006 c L 0.004- 0.002 0.000 0 20 40 60 time (minutes) (919) 751-5100 Fax(919)751-1744 COX-EDWARDS COMPANY, INC. 2- 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" S .,. ,,? ?Z o p r cz IG C ? O. ?d o lll D p? L ,o rS ' 1 l s e* %A& ?. - co. 2-4 11 G.c Z + 2 *4 . GZ _ c 'A = o. G) 5, 4 0. 15 z) 0, 0 t JL) se 5 5 a o I 0. 0 0? 05 - -- -- - 3, 3 0 2 - S4 . -- - L (? 3. 2. 3 t? p .8 01 l 50 z - t - 1 - 4 ti 5 i --? -- I --- - - Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 16 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.04 CFS Time to Peak = 4.61 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.02 4 0.04 6 0.03 8 0.02 10 0.01 12 0.01 14 0.00 16 0.00 18 0.00 20 0.00 22 0.00 24 0.00 26 0.00 28 0.00 30 0.00 32 0.00 34 0.00 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 R3 POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 16 Postdevelopment - Undetained On-Site Runoff for Drainage Area 16 0.045- 0.040- 0.035- 0.030- -?-runoff 0.025- U 0 L 0.020- 0.015- 0.010- 0.005- 0.000---- 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 ?5 "Serving Wayne County and the Surrounding Area Since 1966" T- I Ca v e CAA to ?. 3 I t S, S I I? ,?O t $ l 2 12 / i z t 2 + Iv. " _ 6. = c ? a, ? 3 o z 52 , `a2 C " a ? ?u V, aj (? p ?. N q to ?? s 7 A ??? $ C f I v ,c, lel --- - I _ I I . C//,i 3 , 7 3 3 ( 1 - 9, G, . Z ?) Z 3 , 5 ( Z' r sp-a J 4 7) 3 / ?I G e , r - - I L e L - - Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF 76 THROUGH DETENTION AREA 17 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.52 CFS Time to Peak = 20.9 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.05 6 0.10 8 0.17 10 0.24 12 0.32 14 0.39 16 0.45 18 0.50 20 0.52 22 0.52 24 0.49 26 0.45 28 0.42 30 0.36 32 0.32 34 0.28 36 0.24 38 0.21 40 0.18 42 0.16 44 0.14 46 0.12 48 0.11 50 0.09 52 0.08 54 0.07 56 0.06 58 0.05 60 0.05 62 0.04 64 0.04 66 0.03 68 0.03 70 0.02 72 0.02 74 0.02 POSTDEVELOPMENT, DETAINED RUNOFF 17 THROUGH DETENTION AREA 17 76 78 80 82 84 86 88 90 92 94 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 l? POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 17 0.6 Postdevelopment - Detained On-Site Runoff for Detention Area 17 0.5 0.4 -?- runoff 0.3 0 L 0.2 0.1 0.0 0 20 40 60 80 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" l p- -f cr e. ; a S t G - - i V 4?.,e E ?. s A 1 t . 44 c l C f e f t .? to _ Z. . S .? / ? rte s l? s I I I i i I I I Civil Engineering and Construction • Commercial and Residential Building ROUTING DETENTION AREA 17 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.52 CFS Time to Peak = 20.9 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.01 0 0 0.00 0.00 4 0.05 1 1 0.22 0.05 6 0.10 0 1 0.19 0.05 8 0.17 6 7 0.39 0.07 10 0.24 12 19 0.55 0.08 12 0.32 20 39 0.70 0.09 14 0.39 28 67 0.85 0.10 16 0.45 35 103 0.99 0.10 18 0.50 42 144 1.11 0.11 20 0.52 46 191 1.23 0.12 22 0.52 48 239 1.33 0.12 24 0.49 47 286 1.42 0.13 26 0.45 44 330 1.49 0.13 28 0.42 38 368 1.55 0.13 30 0.36 34 403 1.60 0.13 32 0.32 28 431 1.64 0.13 34 0.28 22 452 1.67 0.14 36 0.24 17 469 1.69 0.14 38 0.21 13 482 1.70 0.14 40 0.18 9 491 1.72 0.14 42 0.16 6 497 1.72 0.14 44 0.14 3 499 1.73 0.14 46 0.12 0 500 1.73 0.14 48 0.11 -2 498 1.72 0.14 50 0.09 -4 494 1.72 0.14 52 0.08 -5 489 1.71 0.14 54 0.07 -7 482 1.70 0.14 56 0.06 -8 474 1.69 0.14 58 0.05 -9 465 1.68 0.14 60 0.05 -10 455 1.67 0.14 62 0.04 -11 445 1.66 0.14 64 0.04 -11 434 1.64 0.13 66 0.03 -12 422 1.63 0.13 68 0.03 -12 409 1.61 0.13 70 0.02 -13 397 1.59 0.13 72 0.02 -13 384 1.57 0.13 74 0.02 -13 370 1.55 0.13 76 0.02 -14 357 1.53 0.13 78 0.01 -14 343 1.51 0.13 80 0.01 -14 329 1.49 0.13 82 0.01 -14 316 1.47 0.13 84 0.01 -14 302 1.44 0.13 86 0.01 -14 287 1.42 0.13 /OO !d ROUTING DETENTION AREA 17 INFLOW 88 0.01 -14 273 1.39 0.12 90 0.01 -14 259 1.37 0.12 92 0.01 -14 245 1.34 0.12 94 0.00 -14 231 1.31 0.12 96 0.00 -14 218 1.29 0.12 98 0.00 -14 204 1.26 0.12 100 0.00 -14 190 1.23 0.12 102 0.00 -14 176 1.19 0.11 104 0.00 -13 163 1.16 0.11 106 0.00 -14 149 1.13 0.11 108 0.00 -13 136 1.09 0.11 110 0.00 -13 123 1.05 0.11 112 0.00 -13 110 1.01 0.11 114 0.00 -13 97 0.97 0.10 116 0.00 -12 85 0.92 0.10 118 0.00 -12 73 0.87 0.10 120 0.00 -12 61 0.82 0.10 122 0.00 -11 50 0.76 0.09 124 0.00 -11 39 0.70 0.09 126 0.00 -11 28 0.62 0.08 128 0.00 -10 18 0.53 0.08 130 0.00 -9 9 0.42 0.07 132 0.00 -8 1 0.18 0.04 134 0.00 -5 0 0.00 0.00 cot, DETENTION AREA 17 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.52 CFS Time to Peak Inflow = 20.9 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.01 0.00 4 0.05 0.05 6 0.10 0.05 8 0.17 0.07 10 0.24 0.08 12 0.32 0.09 14 0.39 0.10 16 0.45 0.10 18 0.50 0.11 20 0.52 0.12 22 0.52 0.12 24 0.49 0.13 26 0.45 0.13 28 0.42 0.13 30 0.36 0.13 32 0.32 0.13 34 0.28 0.14 36 0.24 0.14 38 0.21 0.14 40 0.18 0.14. 42 0.16 0.14 44 0.14 0.14 46 0.12 0.14 48 0.11 0.14 50 0.09 0.14 52 0.08 0.14 54 0.07 0.14 56 0.06 0.14 58 0.05 0.14 60 0.05 0.14 62 0.04 0.14 64 0.04 0.13 66 0.03 0.13 68 0.03 0.13 70 0.02 0.13 72 0.02 0.13 74 0.02 0.13 76 0.02 0.13 DETENTION AREA 17 78 0.01 0.13 80 0.01 0.13 82 0.01 0.13 84 0.01 0.13 86 0.01 0.13 88 0.01 0.12 90 0.01 0.12 92 0.01 0.12 94 0.00 0.12 96 0.00 0.12 98 0.00 0.12 100 0.00 0.12 102 0.00 0.11 104 0.00 0.11 106 0.00 0.11 108 0.00 0.11 110 0.00 0.11 112 0.00 0.11 114 0.00 0.10 116 0.00 0.10 118 0.00 0.10 120 0.00 0.10 122 0.00 0.09 124 0.00 0.09 126 0.00 0.08 128 0.00 0.08 130 0.00 0.07 132 0.00 0.04 134 0.00 0.00 103 DETENTION AREA 17 Inflow vs. Outflow Hydrograph Detention Area 17 0.60 inflow - - - - - outflow 0.50 0.40 0.30 0 c L 0.20 0.10 0.00 -Y 0 20 40 60 80 100 120 time (minutes) 16l (919) 751-5100 Fax(919)751-1744 iii COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 l oS "Serving Wayne County and the Surrounding Area Since 1966" O. 1I y. A ? L C 1 O t J I 8 ( Z "" . 2- t o + Zo. -7 1i 5" V1 r q .t G 5 o ? 3 G c 5 S S+ S Q 1 J -NA u b Q awn I ? C ?' o S o c o ;} v ?I is '7 ''t f A So' t .v ? r--f i 74 4 - -i - --- - 3 3-- -- --- -- -- "? - - - -- - -- - - - - - 1 = Cl . ? ? o. a t i ?' 4 5 a FT ( A . , 7 _ .3 7. 3 o. 3G k , Iv , 6 - - Civil Engineering and Construction • Commercial and Residential Building (919) 751-5100 Fax(919)751-1744 COX-EDWARDS COMPANY, INC. 166 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" St 5t6 q:? , 1"7 19 e ?' s ?, -6 1•? ? da _ v. fj , C E U 3. I i i - i I I -i ? 7 I ' I I Civil Engineering and Construction • Commercial and Residential Building ROUTING DETENTION AREA 18 INFLOW coefficient of discharge = 0.60 gravity = 32.2 fUsec orifice size = 2 in. dia. Peak Flow = 0.36 CFS Time to Peak = 27.3 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.00 0 0 0.00 0.00 4 0.02 1 1 0.16 0.03 6 0.04 -1 0 0.00 0.00 8 0.07 5 5 0.34 0.06 10 0.11 1 6 0.36 0.06 12 0.15 5 11 0.45 0.07 14 0.19 9 20 0.56 0.08 16 0.23 13 33 0.66 0.09 18 0.27 17 51 0.77 0.09 20 0.30 21 72 0.87 0.10 22 0.33 24 96 0.96 0.10 24 0.35 27 123 1.05 0.11 26 0.36 29 151 1.13 0.11 28 0.36 30 181 1.20 0.12 30 0.35 29 210 1.27 0.12 32 0.33 28 238 1.33 0.12 34 0.31 26 264 1.38 0.12 36 0.30 22 286 1.42 0.13 38 0.27 21 307 1.45 0.13 40 0.24 17 324 1.48 0.13 42 0.22 14 337 1.50 0.13 44 0.20 11 348 1.52 0.13 46 0.18 8 356 1.53 0.13 48 0.16 6 362 1.54 0.13 50 0.14 3 365 1.54 0.13 52 0.13 2 367 1.55 0.13 54 0.12 0 367 1.55 0.13 56 0.11 -2 365 1.54 0.13 58 0.09 -3 362 1.54 0.13 60 0.09 -4 357 1.53 0.13 62 0.08 -5 352 1.52 0.13 64 0.07 -6 346 1.52 0.13 66 0.06 -7 339 1.50 0.13 68 0.06 -8 331 1.49 0.13 70 0.05 -9 322 1.48 0.13 72 0.05 -9 313 1.46 0.13 74 0.04 -10 303 1.45 0.13 76 0.04 -10 293 1.43 0.13 78 0.03 -11 282 1.41 0.12 80 0.03 -11 271 1.39 0.12 82 0.03 -11 260 1.37 0.12 84 0.02 -11 248 1.35 0.12 86 0.02 -12 237 1.32 0.12 f0 108 ROUTING DETENTION AREA 18 INFLOW 88 0.02 -12 225 1.30 0.12 90 0.02 -12 213 1.28 0.12 92 0.02 -12 201 1.25 0.12 94 0.01 -12 189 1.22 0.12 96 0.01 -12 176 1.19 0.11 98 0.01 -12 164 1.16 0.11 100 0.01 -12 152 1.13 0.11 102 0.01 -12 140 1.10 0.11 104 0.01 -12 128 1.07 0.11 106 0.01 -12 116 1.03 0.11 108 0.01 -12 104 0.99 0.10 110 0.01 -12 92 0.95 0.10 112 0.01 -12 81 0.91 0.10 114 0.01 -11 69 0.86 0.10 116 0.00 -11 58 0.81 0.09 118 0.00 -11 48 0.75 0.09 120 0.00 -10 37 0.69 0.09 122 0.00 -10 27 0.62 0.08 124 0.00 -9 18 0.53 0.08 126 0.00 -9 9 0.42 0.07 128 0.00 -8 1 0.20 0.05 130 0.00 -5 0 0.00 0.00 DETENTION AREA 18 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.36 CFS Time to Peak Inflow = 27.3 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.00 0.00 4 0.02 0.03 6 0.04 0.00 8 0.07 0.06 10 0.11 0.06 12 0.15 0.07 14 0.19 0.08 16 0.23 0.09 18 0.27 0.09 20 0.30 0.10 22 0.33 0.10 24 0.35 0.11 26 0.36 0.11 28 0.36 0.12 30 0.35 0.12 32 0.33 0.12 34 0.31 0.12 36 0.30 0.13 38 0.27 0.13 40 0.24 0.13 42 0.22 0.13 44 0.20 0.13 46 0.18 0.13 48 0.16 0.13 50 0.14 0.13 52 0.13 0.13 54 0.12 0.13 56 0.11 0.13 58 0.09 0.13 60 0.09 0.13 62 0.08 0.13 64 0.07 0.13 66 0.06 0.13 68 0.06 0.13 70 0.05 0.13 72 0.05 0.13 74 0.04 0.13 76 0.04 0.13 /d9 lid DETENTION AREA 18 78 0.03 0.12 80 0.03 0.12 82 0.03 0.12 84 0.02 0.12 86 0.02 0.12 88 0.02 0.12 90 0.02 0.12 92 0.02 0.12 94 0.01 0.12 96 0.01 0.11 98 0.01 0.11 100 0.01 0.11 102 0.01 0.11 104 0.01 0.11 106 0.01 0.11 108 0.01 0.10 110 0.01 0.10 112 0.01 0.10 114 0.01 0.10 116 0.00 0.09 118 0.00 0.09 120 0.00 0.09 122 0.00 0.08 124 0.00 0.08 126 0.00 0.07 128 0.00 0.05 130 0.00 0.00 DETENTION AREA 18 Inflow vs. Outflow Hydrograph Detention Area 18 0.40 0.35 0.30 0.25 0.20 0 0.15 0.10 0.05 0.00 ------- ------ ----- 0 20 40 60 80 100 120 time (minutes) inflow - - - - outflow (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 11 Z 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" m? ,? 1e L a ? 3 .0 2 11 2 11 1a + C rl. R S S ei t'`.e v -? m 4Q 4E a tJ 9 a 4a d'd, c rZ OA ?, ?s `?v s 1 I ^ 0 z1 C ?z ' 7 ? - - 1 00 b 0 "s 7 g ? V7 _ 2!4 54 6 r" - 1 , 0 1).. 'q 0. 520 12 " I U G p c. ! 'Q ;r _ r It --- Civil Engineering and Construction • Commercial and Residential Building ?13 POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 19 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.52 CFS Time to Peak = 12.9 Min. Time (minutes) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 Runoff (CFS) 0.00 0.03 0.11 0.23 0.36 0.46 0.51 0.51 0.45 0.39 0.31 0.25 0.20 0.16 0.13 0.10 0.08 0.07 0.05 0.04 0.03 0.03 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 114 POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 19 Postdevelopment - Detained On-Site Runoff for Detention Area 19 0.6- 0.5- 0.4- runoff w 0.3- 0 c L 0.2- 0.1 0.0-- 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 11.5 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" ST A I1 -a O L V. 1 16, 41 - s a ?- I I !o - -- - - 1 14 46 t T o I u - - ?i 1 5 T i t v 4 ( 8 .C o Q VV n Aki a i l 1'rJ : I y S? IO ? d S 10 +? ?? ., 3 ? i IV k wh u -- - 1 C .?. -4 ( A c c (v. f C O- 0 T 2 a FT a V ? ( T 04 ,10 114 7 -- - , o 114 e o 2 V_ T F __ - O h b 4 C -- -- - -- -1 -- -- - ----? -- - - I - j -{ - - ?. -: - ? i t $ - -i SQ -- 0) 1-6) Civil Engineering and Construction • Commercial and Residential Building (919) 751-5100 Fax (919) 751-1744 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 116 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" ? b C a - - w V 72 Fc o 09 6- 5*1 4 ( a tL ? ?'1 r v? ? T I I 4 'u v ,441 0 -4A - I ! I I Civil Engineering and Construction • Commercial and Residential Building ROUTING DETENTION AREA 19 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.52 CFS Time to Peak = 12.9 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.03 0 0 0.00 0.00 4 0.11 4 4 0.30 0.06 6 0.23 7 10 0.44 0.07 8 0.36 19 30 0.64 0.08 10 0.46 33 62 0.83 0.10 12 0.51 43 106 1.00 0.10 14 0.51 49 155 1.14 0.11 16 0.45 48 203 1.25 0.12 18 0.39 40 243 1.34 0.12 20 0.31 32 274 1.40 0.12 22 0.25 22 296 1.43 0.13 24 0.20 15 311 1.46 0.13 26 0.16 9 320 1.47 0.13 28 0.13 4 324 1.48 0.13 30 0.10 0 324 1.48 0.13 32 0.08 -3 321 1.48 0.13 34 0.07 -5 315 1.47 0.13 36 0.05 -7 308 1.45 0.13 38 0.04 -9 299 1.44 0.13 40 0.03 -10 289 1.42 0.13 42 0.03 -11 278 1.40 0.12 44 0.02 -12 266 1.38 0.12 46 0.02 -12 254 1.36 0.12 48 0.01 -13 242 1.33 0.12 50 0.01 -13 229 1.31 0.12 52 0.01 -13 216 1.28 0.12 54 0.01 -13 203 1.25 0.12 56 0.01 -13 189 1.22 0.12 58 0.00 -13 176 1.19 0.11 60 0.00 -13 163 1.16 0.11 62 0.00 -13 150 1.13 0.11 64 0.00 -13 137 1.09 0.11 66 0.00 -13 124 1.05 0.11 68 0.00 -13 111 1.01 0.11 70 0.00 -13 98 0.97 0.10 72 0.00 -12 86 0.93 0.10 74 0.00 -12 74 0.88 0.10 76 0.00 -12 62 0.82 0.10 78 0.00 -11 51 0.77 0.09 80 0.00 -11 39 0.70 0.09 82 0.00 -11 29 0.63 0.08 84 0.00 -10 19 0.54 0.08 86 0.00 -9 10 0.43 0.07 117 ROUTING DETENTION AREA 19 INFLOW l18 88 0.00 -8 1 0.22 0.05 90 0.00 -6 0 0.00 0.00 117 DETENTION AREA 19 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.52 CFS Time to Peak Inflow = 12.9 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.03 0.00 4 0.11 0.06 6 0.23 0.07 8 0.36 0.08 10 0.46 0.10 12 0.51 0.10 14 0.51 0.11 16 0.45 0.12 18 0.39 0.12 20 0.31 0.12 22 0.25 0.13 24 0.20 0.13 26 0.16 0.13 28 0.13 0.13 30 0.10 0.13 32 0.08 0.13 34 0.07 0.13 36 0.05 0.13 38 0.04 0.13 40 0.03 0.13 42 0.03 0.12 44 0.02 0.12 46 0.02 0.12 48 0.01 0.12 50 0.01 0.12 52 0.01 0.12 54 0.01 0.12 56 0.01 0.12 58 0.00 0.11 60 0.00 0.11 62 0.00 0.11 64 0.00 0.11 66 0.00 0.11 68 0.00 0.11 70 0.00 0.10 72 0.00 0.10 74 0.00 0.10 76 0.00 0.10 )Za DETENTION AREA 19 78 0.00 0.09 80 0.00 0.09 82 0.00 0.08 84 0.00 0.08 86 0.00 0.07 88 0.00 0.05 90 0.00 0.00 IZ/ O.E 0.5 0.4 0.3 0 c 0.2 0.1 DETENTION AREA 19 Inflow vs. Outflow Hydrograph Detention Area 19 0.0 !L.- 0 10 20 30 40 50 60 70 80 90 time (minutes) inflow - - - outflow (919) 751-5100 COX-EDWARDS COMPANY, INC. 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 Fax (919) 751-1744 l ZZ "Serving Wayne County and the Surrounding Area Since 1966" S a ? a - 1' ?- a b..r ? z - 2 I -- - l? r? i a ? 4 e O? i 11' " - w QA/ . I Civil Engineering and Construction • Commercial and Residential Building POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 20 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.52 CFS Time to Peak = 12.9 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.03 4 0.11 6 0.23 8 0.36 10 0.46 12 0.51 14 0.51 16 0.45 18 0.39 20 0.31 22 0.25 24 0.20 26 0.16 28 0.13 30 0.10 32 0.08 34 0.07 36 0.05 38 0.04 40 0.03 42 0.03 44 0.02 46 0.02 48 0.01 50 0.01 52 0.01 54 0.01 56 0.01 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 1L3 POSTDEVELOPMENT, DETAINED RUNOFF THROUGH DETENTION AREA 20 Postdevelopment - Detained On-Site Runoff for Detention Area 20 0.6 0.5- runoff] 0.4- 0.3- 0 c 0.2 0.1 0.0- 0 20 40 60 time (minutes) ROUTING DETENTION AREA 20 INFLOW coefficient of discharge = 0.60 gravity = 32.2 ft/sec orifice size = 2 in. dia. Peak Flow = 0.52 CFS Time to Peak = 12.9 Min. Time Inflow Change in Storage Stage Outflow (minutes) (CFS) Storage (CF) (CF) (FT) (CFS) 0 0.00 0 0 0.00 0.00 2 0.03 0 0 0.00 0.00 4 0.11 4 4 0.30 0.06 6 0.23 7 10 0.44 0.07 8 0.36 19 30 0.64 0.08 10 0.46 33 62 0.83 0.10 12 0.51 43 106 1.00 0.10 14 0.51 49 155 1.14 0.11 16 0.45 48 203 1.25 0.12 18 0.39 40 243 1.34 0.12 20 0.31 32 274 1.40 0.12 22 0.25 22 296 1.43 0.13 24 0.20 15 311 1.46 0.13 26 0.16 9 320 1.47 0.13 28 0.13 4 324 1.48 0.13 30 0.10 0 324 1.48 0.13 32 0.08 -3 321 1.48 0.13 34 0.07 -5 315 1.47 0.13 36 0.05 -7 308 1.45 0.13 38 0.04 -9 299 1.44 0.13 40 0.03 -10 289 1.42 0.13 42 0.03 -11 278 1.40 0.12 44 0.02 -12 266 1.38 0.12 46 0.02 -12 254 1.36 0.12 48 0.01 -13 242 1.33 0.12 50 0.01 -13 229 1.31 0.12 52 0.01 -13 216 1.28 0.12 54 0.01 -13 203 1.25 0.12 56 0.01 -13 189 1.22 0.12 58 0.00 -13 176 1.19 0.11 60 0.00 -13 163 1.16 0.11 62 0.00 -13 150 1.13 0.11 64 0.00 -13 137 1.09 0.11 66 0.00 -13 124 1.05 0.11 68 0.00 -13 111 1.01 0.11 70 0.00 -13 98 0.97 0.10 72 0.00 -12 86 0.93 0.10 74 0.00 -12 74 0.88 0.10 76 0.00 -12 62 0.82 0.10 78 0.00 -11 51 0.77 0.09 80 0.00 -11 39 0.70 0.09 82 0.00 -11 29 0.63 0.08 84 0.00 -10 19 0.54 0.08 86 0.00 -9 10 0.43 0.07 88 0.00 -8 1 0.22 0.05 90 0.00 -6 0 0.00 0.00 IZC DETENTION AREA 20 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Inflow = 0.52 CFS Time to Peak Inflow = 12.9 Min. Time Inflow to Detention Pond Detention Pond Runoff (minutes) (CFS) (CFS) 0 0.00 0.00 2 0.03 0.00 4 0.11 0.06 6 0.23 0.07 8 0.36 0.08 10 0.46 0.10 12 0.51 0.10 14 0.51 0.11 16 0.45 0.12 18 0.39 0.12 20 0.31 0.12 22 0.25 0.13 24 0.20 0.13 26 0.16 0.13 28 0.13 0.13 30 0.10 0.13 32 0.08 0.13 34 0.07 0.13 36 0.05 0.13 38 0.04 0.13 40 0.03 0.13 42 0.03 0.12 44 0.02 0.12 46 0.02 0.12 48 0.01 0.12 50 0.01 0.12 52 0.01 0.12 54 0.01 0.12 56 0.01 0.12 58 0.00 0.11 60 0.00 0.11 62 0.00 0.11 64 0.00 0.11 66 0.00 0.11 68 0.00 0.11 70 0.00 0.10 72 0.00 0.10 74 0.00 0.10 76 0.00 0.10 DETENTION AREA 20 78 0.00 0.09 80 0.00 0.09 82 0.00 0.08 84 0.00 0.08 86 0.00 0.07 88 0.00 0.05 90 0.00 0.00 I Z.7 128 DETENTION AREA 20 Inflow vs. Outflow Hydrograph Detention Area 20 0.6 0.3 0 0.1 0.0 inflow - - - , outflow time (minutes) 0.5 0.4 0.2 0 10 20 30 40 50 60 70 80 90 (919) 751-5100 Fax (919) 751-1744 iii COX-EDWARDS COMPANY, INC. tZ 7 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" _- .? 5 0, 113 0, 1I - - __ f rVVQ e C 3 - A 1 1 o f o ,,0 3 " 1 - ( .s ? < .4 0 .0 11 - 0 0 4 c 5 -- - SC 6 o C u j f - I t o, a C, O oa e, 0 a' 3 d l r = _ Civil Engineering and Construction • Commercial and Residential Building (3a POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 21 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.04 CFS Time to Peak = 8.04 Min. Time (minutes) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 Runoff (CFS) 0.00 0.01 0.02 0.03 0.04 0.03 0.03 0.02 0.01 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 131 POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 21 Postdevelopment - Detained On-Site Runoff for Drainage Area 21 0.0- 0.0- 0.0- 0.0- 0.0- 0.0- 0.0- 0.0- 0.0- 0.0- 0 20 40 60 time (minutes) (919) 751-5100 Fax (919) 751-1744 I E COX-EDWARDS COMPANY, INC. 132- 1205 Parkway Drive Goldsboro, NC 27534 Contractors License No. 5046 "Serving Wayne County and the Surrounding Area Since 1966" S br a - -- - u f 0 .b 4 - j- z v? 1k - of T o 01 2 ( 5. 4,9 ( 0,1 5 I - -' - 5 S" S m ?' a Q ,,^ cw o F - 5 C 01 a f- &4 C 0 {? , ? t z A so: I ? I 6 41 ? r t4 - i - at 3 ( -- - 3 6,4 S - `? G O 1 F 1 43 S 0 ?• 4 / 40 10 s y Q G ? S-0 - -! I - 1 - - 1 - i -L -= ---- - I Civil Engineering and Construction • Commercial and Residential Building 133 POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 22 Project: Phase XI Annexation Area - Pump Station Access Road Engineer: Cox-Edwards Company, Inc. Applicant:City of Goldsboro Date: December 10, 2010 Peak Flow = 0.04 CFS Time to Peak = 7.8 Min. Time Runoff (minutes) (CFS) 0 0.00 2 0.01 4 0.02 6 0.03 8 0.04 10 0.03 12 0.02 14 0.02 16 0.01 18 0.01 20 0.01 22 0.00 24 0.00 26 0.00 28 0.00 30 0.00 32 0.00 34 0.00 36 0.00 38 0.00 40 0.00 42 0.00 44 0.00 46 0.00 48 0.00 50 0.00 52 0.00 54 0.00 56 0.00 58 0.00 60 0.00 62 0.00 64 0.00 66 0.00 68 0.00 70 0.00 72 0.00 74 0.00 134f POSTDEVELOPMENT, UNDETAINED RUNOFF THROUGH DRAINAGE AREA 22 Postdevelopment - Detained On-Site Runoff for Drainage Area 22 0.0 0.0 0.0 -+- runoff 0.0- 0.0- 0 0.0- 0.0- 0.0- 0.0- 0.0- 0 20 40 60 time (minutes) 135 A 0 A CD It A N A O W OD W O) W A W N W O N w N O N A N N N O ao O A N O O A N O 3 O ?. 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W W W W O O O P O O O o O O P O O O O O O O O O O O O O O O O O O O O O O O O O 0 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 JO W W W top 0 0 0 0 N N N N O O O O O o O O O o O O o O O O O O O o O O O O O O O O O O P P O O O O O O O O O O O O O O O O O O O O 0 JO ODD OOD (00 (00 O O O o i i 1 I i i N N N N O O O O O O O O O 0 O O O O O O O O O O O O O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0 O O O O O O O O O O O O O O O O O 0 0 O O O O O O 1 O 1 0 O O O O O O O O O O O 5, 5, O O !0 P O O O O g O O O O O O O O O O O O O O O O O O O O Cl 0 O O O O O O 1 O O 1 O O O O O O 1 O O I O O O O C o O I O O O O O O O O O O O O O O O O O O I g O O O O O O O O O O O O O O O O O O O O O O O O O i - O O O O O O O O O O O O O O O O O O O O O O O O ?2 - N N W W W W GT (.1 U lim (T V1 (T (T V1 0 W Q) W O) 0 OD OD (0 t0 O O 0 N N A V 0 0 -+ W O LA W V A (O -I 0 m v m m r- 0 m z -v O Cl) v m m r- 0 -o m z /37 runoff (cfs) O O -? -? N N O fJ? O C1? O al O O N 0 W 0 0 ? o <D 3 ?D V ? o OD 0 O s 0 0 0 N O W W A C. 0 < 0 O M 3 m N O 0 e?r a < 0 M 3 X 0 2 CL I O Q m 3 X m m m r- 0 ic m z -I < O Cl) -1 v m m r- 0 m z -I NITROGEN EXPORT CALCULATIONS CO c?IQ??o?s w??? rio GVA ? ?.ucf`? a Figure 2.2 Worksheet for Method 2: Quantifying Total Nitrogen Export from Residential / Industrial / Commercial Developments when Footprints of all Impervious Surfaces are Shown Step 1: Determine area for each type of land use and enter in Column (2). Step 2: Total the areas for each type of land use and enter at the bottom of Column (2). Step 3: Multiply the areas in Column (2) by the TN export coefficients in Column (3) and enter in Column (4). Step 4: Total the IN exports for each type of land use and enter at the bottom of Column (4). Step 5: Determine the export coefficient for site by dividing the total TN export from uses at the bottom of Column (4) by the total area at the bottom of Column (2). (1) (2) (3) (4) Type of Land Cover Area TN export coeff. TN export from use acres (lbs/actyr) (lbs/yr) Permanently protected undisturbed 0.6 open sace forest, unmown meadow 0.00 O.O b Permanently protected managed 1.2 open s ace (grass, landscaping, etc. 1.43 2.32- Impervious surfaces (roads, parking 21.2 lots, driveways, roofs, paved storage areas, etc. 1,17 24.180 TOTAL 3. to --- 27. / 2 The rule requires that all new developments achieve a nitrogen export of less than or equal to 3.6 pounds per acre per year. If the development contributes greater than 3.6 lbs/ac/yr of nitrogen, then the options shown in Table 2.2a are available based on whether the development is residential or nonresidential. Table 2.2a: Nitrogen Export Reduction Options Residential Commercial / Industrial If the computed export is less than 6.0 If the computed export is less than 10.0 lbs/ac/yr, then the owner may either. lbs/ac/yr, then the owner may either. 1. Install BMPs to remove enough nitrogen to 1. Install BMPs to remove enough nitrogen to bring the development down to 3.6 bring the development down to 3.6 lbs/ac/yr. lbs/ac/yr. 2. Pay a one-time offset payment of $330/lb 2. Pay a one-time offset payment of $330/1b to to bring the nitrogen down to the 3.6 bring the nitrogen down to the 3.6 lbs/ac/yr. lbs/ac/yr. 3. Do a combination of BMPs and offset 3. Do a combination of BMPs and offset payment to achieve a 3.6 lbs/ac/yr export. payment to achieve a 3.6 lbs/ac/ export. If the computed export is greater than 6.0 If the computed export is greater than 10.0 lbs/ac/yr, then the owner must use on-site lbs/ac/yr, then the owner must use on-site BMPs BMPs to bring the development's export down to bring the development's export down to 10.0 to 6.0 lbs/ac/yr. Then, the owner may use one lbs/ac/yr. Then, the owner may use one of the of the three options above to achieve the three options above to achieve the reduction reduction between 6.0 and 3.6 lbs/ac/ between 10.0 and 3.61bs/ac/ . Q%CommoalBSabata%cskhbwo StonawaeeAGoldsbalo SMP Report Oudbu,A- Flqumdo< 2-7 ` Z -L§14 - JC , / S I ,l)5 / 3 . /0 acres = CJ QG/y? 138 2-6 Nitrogen Export Calculations 139 Phase XI Annexation Area - Pump Station Access Road 1. From Figure 2.2 calculations of previous page, Total Nitrogen Export = 27.12 lbs./yr. Total Nitrogen Export = 27.12 lbs./yr. = 8.75 lbs./ac./yr. Per Acre 3.10 acre 2. TN export per acre less than 10.00 lbs./ac./yr., but not reduction taken because most ditch side slopes steeper than 3:1 3. Payment required into North Carolina Ecosystem Enhancement Fund or other mitigation bank for: (8.75-3.6) tbs./ac./yr. x 30 years x 3.10 ac. = 478.80 lbs./30 yr. or 15.96 lbs./yr. APPENDIX 0c) SOIL SURVEY OF Wayne County, North Carolina United States Department of Agriculture Soil Conservation Service in cooperation with North Carolina Agricultural Experiment Station Issued June 1974 4 44 GUIDE TO MAPPING UNITS For a full description of a mapping unit, read both the description of the mapping unit and that of the soil series to which the mapping unit belongs. In referring to a capability unit or a woodland group, read the introduction to the section it is in for general information about its management. Other information is given in tables as follows: Acreage and extent, table 1, page S. Suitability for wildlife, table 4, page 50. Estimated yields, table 2, page 43. Engineering uses of the soils, tables 5, 6, and Woodcrops, table 3, page 44. 7, pages 52 through 651. Capability Woodland Map Described unit on group symbol Mapping unit page Symbol Page Symbol AyA Aycock very fine sandy loam, 0 to 2 percent slopes------------------- 6 I-1 38 2ol AyB Aycock very fine sandy loam, 2 to 6 percent slopes------------------- 6 IIe-1 38 2ol AyB2 Aycock very fine sandy loam, 2 to 6 percent slopes, eroded----------- 6 IIe-1 38 2ol Ba Barclay very fine sandy loam______________________________________ 7 IIw-2 38 2w8 Bb Bibb sandy loam------------------------------------------------------ 7 IVw-4 41 Ch Chewacla loam------------------------------------------------- - 8 2w9 Co -- ---- Coxville loam --------------------------- IIIw-5 40 lw8 CrB2 ----------------------------- Craven sandy loam, 2 to 6 percent slopes, eroded--------------------- 9 9 IIIw-2 Ile-3 40 38 2w9 3w2 CrC2 Craven sandy loam, 6 to 10 percent slopes, eroded-------------------- 10 IIIe-2 39 3w2 Dr Dragston loamy sand________________________________________ 10 IIw-2 38 2w8 Ex Exum very fine sandy loam---------------------------- ---------------- 11 IIw-1 38 2w8 Go ` Goldsboro loamy sand_________________________________________________ 12 IIw-1 38 2w8 Jo Johns sandy loam----------------------------------------------------- 13 IIw-2 38 Js Johnston loam___________________________ 2w2 KaA _________ ----=--------------- Kalmia loamy sand, 0 to 2 percent slopes_____________________________ 13 14 IVw-4 I-1 41 38 lw9 KaB Kalmia loamy sand, 2 to 6 percent slopes_______________________ 15 IIe-1 38 2o7 2o7 KaD Kalmia loamy sand, 10 to 15 percent slopes --------------------------- 15 IVe-1 41 2 7 KaE Kalmia loamy sand, 15 to 25 percent slopes_______________________ 15 VIe-1 42 o 2 7 Ke . Kenansville loamy sand----------------------------------------------- 16 It 1 o Kn Kinston loam--------------------------- s- 39 3s2 La ------------------------------ Lakeland sand------------------------- 16 IVw-4 41 lw9 Le ------------------------------- Leaf loam--------------------------- 17 IVs-1 41 4s2 Ln --------------------------------- Leon sand------------------------------ 18 IVw-2 41 2w9 Ls ------------------------------ Liddell very fine sandy loam_______________________ 18 19 Vw-1 III 3 42 4w2 Lu Lucy loamy sand---------------------------- w- 40 2w9 Lv -------------------------- Lumbee sandy loam -------------------------- 20 Its-1 39 3s2 Ly,; -------------------------- Lynchburg sandy loam------------------------- 20 IVw-4 41 2w9. My ----------------- Myatt very fine sandy loam_________________ ---------------------- - 21 22 IIw-2 38 2w8 Na - -- Nahunta very fine sandy loam-------------------------------------- 23 IIIw-3 I 40 2w9 Nf --- Nixonton very fine sandy loam___________________ --------------------- 24 Iw-2 II 1 38 2w8 NoA Norfolk loamy sand, 0 to 2 percent slopes____________________________ 25 w- I_1 38 38 2o7 NoB Norfolk loamy sand, 2 to 6 percent slopes___________________ 26 IIe-1 38 2ol 2 l o NrB2 Norfolk loamy sand, 6 to 10 percent slopes --------------------------- Norfo Wk sandy loam 2 to 6 e o Pa , . p xcent slopes, eroded-------------------- Pamlico muck--------------------------- 27 IIe-1 38 2ol Po ------------------------------ Pantego loam______________________________ 27 w-1 42 4w3 Ra- ___ ------------------------ Rains sandy loam--------------------------- 28 IIIw-3 40 lw9 Rm -------------------------- Rimini sand____________________________ 29 IIIw-3 40 2w3 RuA ______________ ---------------- Ruston loamy sand, 0 to 2 percent slopes ----------------------------- 29\ IVs-1 41 5s3 RuB Ruston loamy sand, 2 to 6 percent slopes ----------------------------- 30 IIe-1 38 RyB2 T Ruston sandy loam, 2 to 6 percent slopes, eroded_____________________ 30 Ile-1 38 2ol 2 l o Torhunta loam------------------------- o Tr ------------------------------- Troup sand______________________________ 31 IIIw-3 40 2w9 WaB ----------------------------- Wagram loamy sand, 0 to 6 percent slopes________________________ ----- 32 33 IIIs-1 Its 1 40 3s2 WaC Wagram loamy sand, 6 to 10 percent slopes ---------------------------- - 39 3s2 WaD Wagram loamy sand, 10 to 15 percent slopes --------------------------- 3s2 We Weston loamy sand---------------------- - 3s2 WhA ----------------------------- Wickham loamy sand, 0 to 2 percent slopes ---------------------------- 34 IIIw-3 40 2w9 B Wickham loamy sand, 2 to 6 percent slopes ---------------------------- WkB2 Wickham sandy loam, 2 to 6 percent slopes, eroded-------- 3S IIe-1 38 2o7 A U. S. GOVERNMENT PRINTING OFFICE "1974 0 - 454-427 Y 42' WAYNE COUNTY, NORTH CAROLINA Infiltration is rapid, and surface runoff is very slow. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is generally unsuited to cultivated crops, ex- cept for blueberries and other specialized crops, because of wetness, coarse texture, and the weakly cemented sub- soil. It is suited to pasture or trees. Nearly all of the acreage is forested. Longleaf pine and turkey oak are the principal trees. Capability unit Vw-1; woodland group 4w2. Liddell Series The Liddell series consists of poorly drained, nearly level soils on smooth flats in broad areas between streams. These soils formed in Coastal Plain sediments. The sea- sonal high water table is at the surface. In a representative profile, the surface layer is dark- gray very fine sandy loam about 8 inches thick. The subsoil is gray, very friable very fine sandy loam about 46 inches thick that is mottled with brownish yellow in the lower part. Below the subsoil, to a depth of about 65 inches, is gray, friable loam mottled with brown and brownish yellow. Liddell soils are low in natural fertility and organic- matter content. They have moderate permeability, high available water capacity, and low shrink-swell potential. Crops grown on these soils respond well to lime and fertilizer. Liddell soils are of minor importance for farming. Most of the acreage is wooded. A seasonal high water table and surface ponding are the major hazards limiting the use of these soils. Representative profile of Liddell very fine sandy loam, 7 miles northeast of Goldsboro, 0.3 mile southwest of Saulston, and 10 feet southwest of Road 1572, in a culti- vated field : Ap-0 to 8 inches, dark-gray (10YR 4/1) very fine sandy loam ; weak, medium, granular structure ; very fri- able; many small roots ; strongly acid ; clear, smooth boundary. 131g-8 to 14 inches, gray (10YR 6/1) very fine sandy loam; weak, medium, granular structure ; very friable ; few small roots ; common pores filled with dark- gray surface soil; strongly acid; clear, wavy bound. ary. B2g-14 to 42 inches, gray (10YR 6/1) very fine sandy loam ; common, medium, distinct, brownish-yellow (10YR 6/6) mottles ; weak, fine, subangular blocky structure ; very friable, slightly sticky and slightly plastic ; few large pores ; very strongly acid ; grad. ual, wavy boundary. B39--422 to 54 inches, gray (10YR 6/1) very fine sandy loam ; few, fine, distinct, brownish-yellow mottles ; weak, fine, subangular blocky structure; very fri- able, slightly sticky and slightly plastic ; thin djs- continuous silt coatings on faces of some peds; very strongly acid; gradual, wavy boundary. Cg--54 to 65 inches, gray (10YR 6/1) loam; common, me- dium, distinct, brown (10YR 5/3) and brownish- yellow (10YR 6/6) mottles ; massive ; friable, slight- ly sticky and slightly plastic ; very strongly add. Liddell soils have a solum that ranges from 40 to about 60 inches in thickness. The A horizon ranges from 6 to 10 inches in thickness and is dark gray to very dark gray. The very dark gray part of the surface layer, where present, is less than 8 inches thick. The B hoizon is 34 to 50 inches thick and is very fine sandy loam to silt loam. The sand fraction is dominantly very fine sand. The B horizon is gray 19 to light gray mottled with brownish yellow, strong brown, or yellowish red. The C horizon is gray to light gray and ranges from very fine sandy loam to silt loam, but commonly is loam. Liddell very fine sandy loam (Ls). --This is a poorly drained soil on smooth flats in broad areas between streams. Slopes are 0 to 2 percent. The mapped areas are wide and range from 10 to about 30 acres in size. The surface layer is dark-gray to very dark gray very fine sandy loam 6 to 10 inches thick. The very dark part of the gray surface layer, where present, is less than 8 Inches thick. The subsoil is gray to light-gray, very friable very fine sandy loam to silt loam 34 to 50 inches thick. It is mottled with brownish yellow, strong brown, and yellowish red. Included with this soil in mapping were a few areas of Liddell soils that have a silt loam and loam surface layer. In small areas are poorly drained soils that have a brittle consistence in the lower subsoil, and a few areas of very poorly drained soils that have a very dark gray surface layer more than 8 inches thick. Some areas of Barclay and Myatt soils were also included. Infiltration is moderate, and surface runoff is slow. The water ponds in some places. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. Where artificially drained, this soil is well suited to a few locally grown crops, mainly corn and soybeans. The principal trees in wooded areas are loblolly pine. Wetness is a severe limitation because of the seasonal high water table and surface ponding. Surface and subsurface drain- age is needed where this soil is cultivated or pastured. Most of the acreage is forested. The rest is cultivated and pastured. Capability unit IIIw-3; woodland group 2w9. Lucy Series The Lucy series consists of well-drained, nearly level to gently sloping soils on smooth, slightly convex divides. These soils formed in Coastal Plain sediments. The sea- sonal high water table remains below a depth of 5 feet. In a representative profile, the surface layer is loamy sand about 24 inches thick that is brown in the upper part and light yellowish brown in the lower part. The subsoil, to a depth of about 70 inches is friable sandy clay loam that is strong brown and yehowish red in the upper part and red in the lower part. Lucy soils are low to very low in natural fertility and organic-matter content. They have moderate per- meability, low available water capacity, and low shrink- swell potential. Crops grown on these soils respond well to lime and fertilizer. Lucy soils are of minor importance for farming. Most of the acreage is cultivated, and the rest is in forest and pasture. Low to very low fertility, leaching1 droughti- ness, and soil blowing are the major hazards limiting the use of these soils. Representative profile of Lucy loamy sand, 4 miles east. of Mt. Olive, 0.5 mile west of Williams pond, and 100 feet south of State Route 55, in a cultivated field : Ap-0 to 8 inches, brown (JOYR 4/3) loamy sand; weak, medium, granular structure ; very friable ; many small roots ; slightly acid ; abrupt, smooth boundary. )43 20 SOIL SURVF)Y A2-8 to 24 inches, light yellowish-brown (10YR 6/4) loamy sand; weak, medium, granular structure; very fri. able, nonsticky and nonplastic ; many small roots ; few small pebbles ; strongly acid ; clear, wavy boundary. BU-24 to 26 inches, strong-brown (7.5YR 5/6) sandy clay loam; moderate, fine, subangular blocky structure; friable, slightly sticky and slightly plastic; few small roots; thin patchy clay films on faces of peds; few pebbles that have thick clay coatings; very B2t-26 toro50?inchacid; es, yellowish red o(5YR 4/6) sandy clay loam ; moderate, fine, subangular blocky structure ; friable, sticky and plastic; few small roots; thin discontinuous clay films on faces of peels and in pores ; few pebbles that have thick clay coatings ; very strongly acid ; gradual, wavy boundary. B3t-_W to 70 inches, red (2.5YR 4/8) sandy clay loam; pockets of brownish-yellow (10YR 6/8) sand; mod- erate, fine, subangular blocky structure ; friable, stick and slightly plastic ; thin clay films on faces of peds; few pebbles that have thick clay coatings; very strongly add. Lucy soils have a solum more than 60 inches thick. The A horizon ranges from 20 to 40 inches in thickness. The Ap and A1. horizons are grayish brown or brown to dark yellowish brown. The A2 horizon is pale brown to light yellowish brown. The B horizon is more than 40 inches thick and is sandy clay loam to sandy loam. It is yellowish red to red mottled with brownish yellow or red in the lower part. The C horizon is brownish yellow to red sandy loam and sandy clay loam. Lucy loamy sand (lu).-This is a well-drained soil on smooth, slightly convex divides. Slopes range from 0 to 6 percent. The mapped areas are 5 to 25 acres in size. The surface layer is grayish-brown or brown to dark yellowish-brown loamy sand 20 to 40 inches thick. The subsoil is yellowish-red to red, friable sandy clay loam to sandy loam more than 40 inches thick. Included with this soil in mapping were a few areas of Lucy soils that have a sand and loamy fine sand surface layyer. Also included were some areas of Wagram, Kenansville, Norfolk, Ruston, and Troup soils. Infiltration is rapid, and surface runoff is slow. This soil is fairly easy to keep in good tilth and can be worked throw.ghout a wide range of moisture content. This soil is suited to most locally grown crops and is used mainly for tobacco, corn, and soybeans. Because the surface layer is thick and sandy, this soil has moderate limitations of low fertility, leaching, droughtiness, and soil blowing. Conservation practices are needed to ef- fectively control soil blowing and reduce leaching and droughtiness. Most of the acreage is cultivated. The rest is forested and pastured. Capability unit Hs-1; woodland group 3s2. Lumbee Series The Lumbee series consists of poorly drained, nearly level soils in shallow drain flat ageways and broad, smooth, areas on terraces, These soils formed in stream sedi- ments. The seasonal high water table is at the surface. In a representative profile, the surface layer is sandy loam about 13 inches thick that is dark gray in the upper part and light brownish gray in the lower part. The subsoil. is about 27 inches thick and is dominantly gray, friable sandy clay loam mottled with yellowish brown. Below the subsoil, to a depth of about 65 inches, is gray loamy coarse sand. Lumbee soils are low in natural fertility and organic- matter content. They have moderate permeability, medi- um available water capacity, and low shrink-swell po- tential. About 60 percent of the acreage is subject to in- frequent floods for short periods. Crops grown on these soils respond well to lime and fertilizer. Lumbee soils are of minor importance for farming. Most of the acreage is in mixed hardwoods and pines, but some is cleared and used for cultivated crops and pasture. A seasonal high water table, surface ponding, and in- frequent floods are the major hazards limiting the use of these soils. Representative profile of Lumbee sandy loam, 7 miles west of Goldsboro, a mile south of intersection of Roads 1007 and 1224, 300 yards east of Road 1224, and 200 feet north of farm road, in a cultivated field : Ap-0 to 8 inches, dark-gray (10YR 4/1) sandy loam; weak, medium, granular structure; very friable; many small roots ; strongly add ; abrupt, smooth boundary. A2-$ to 18 inches, light brownish-gray (10YR 6/2) sandy loam; weak, medium, granular structure; very fri- able; many small roots; common small pores filled with dark-gray surface soil; very strongly add; clear, smooth boundary. Big-13 to 16 inches, light brownish-gray (30YR 6/2) sandy loam ; common, medium, distinct, yellowish-brown (10YR 5/6) mottles; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plas- tic ; few small roots ; extremely add ; clear, smooth boundary. 132tg--16 to 34 inches, gray (10YR 6/1) sandy clay loam; common, medium, distinct, yellowish-brown (10YR 5/6) mottles; weak, One, subangular blocky struc- ture ; friable, sticky and plastic ; thin discontin- uous clay films on faces of peds and in pores; ex- tremely add ; gradual, wavy boundary. B3g--34 to 40 inches, gray (10YR 6/1) sandy clay loam; pockets of coarse sandy loam and loamy coarse sand ; common, medium, distinct, yellowish-brown (10YR 5/6) mottles; weak, fine, subangular struc- ture ; friable, slightly sticky and slightly plastic ; extremely add ; gradual, wavy boundary. IICg---40 to 65 inches, gray (10YR 6/1) loamy coarse sand; pockets or strata of coarse sandy loam and coarse sand ; massive ; very friable ; extremely add. Lumbee soils have a solum that ranges from 30 to 50 inches in thickness. The A horizon is 10 to 20 inches thick. The Ap and Al horizons are dark gray to very dark gray. The very dark gray part, where present, is less than 6 inches thick. The A2 horizon is light brownish gray to grayish brown. The B horizon is 20 to 30 inches thick and is sandy clay loam to sandy loam. It is gray or light gray to light brownish gray mottled with yellowish brown and strong brown. Content of fine mica flakes, where they occur, ranges from very few to few. The C horizon ranges from gray to light gray coarse sand or loamy coarse sand to gravelly loamy sand. Lumbee sandy loam (Me-This is a poorly drained soil in shallow drainageways and broad, smooth, flat areas on stream terraces. Slopes are 0 to 2 percent. The mapped areas are long, but range from narrow to wide across. They are about 10 to 100 acres in size. The surface layer is dark-gray to very dark gray sandy loam 10 to 20 inches thick. The very dark gray part of the surface layer, where present, is less than 6 inches thick. The subsoil is gray or light-gray to light brownish-gray, fri- able sandy clay loam to sandy loam 20 to 30 inches thick. It is mottled with yellowish brown and strong brown. Included with this soil in mapping were a few areas of Lumbee soils that have a surface layer of very fine 44- 32 SOIL SURVEY Representative profile of Troup sand, 6 miles west of Dudley, 0.7 mile north of intersection of Roads 1125 and 1122, 0.2 mile west of Road 1125, and 50 feet south of farm road, in a cultivated field : Ap-0 to 8 inches, grayish-brown (10YR 5/2) sand; single grain ; loose ; many small roots ; strongly acid ; abrupt, smooth boundary. A2-8 to 49 inches, very pale brown (10YR 7/3) sand; single grain ; loose ; few small roots in upper part ; few uncoated sand grains ; very strongly acid ; abrupt, smooth boundary. BI-49 to 52 inches, yellowish-brown (lOYR 5/8) sandy loam ; weak, line, subangular blocky structure ; friable, slightly sticky and slightly plastic ; very strongly acid; clear, wavy boundary. B21t-52 to 72 inches, brownish-yellow (IOYR 6/8) sandy clay loam ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; thin discontinuous clay films on faces of peds and in pores ; very strongly acid ; gradual, wavy boundary. B22t-72 to 85 inches, strong-brown (7.5YR 5/8) sandy clay loam ; common, fine, faint, brownish-yellow mottles ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; thin discontin- uous clay films on faces of peds and in pores ; few pebbles ; very strongly acid ; clear, wavy boundary. 113t-45 to 110 inches, strong-brown (7.5YR 5/8) sandy loam ; common, medium, distinct, pale-brown (10YR 6/3) and light-gray (10YR, 7/1) mottles; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic; thin discontinuous clay films on faces of peds and in pores ; very strongly acid. Troup soils have a solum more than 80 inches thick. The A horizon ranges from 40 to 72 inches in thickness. The Ap and Al horizons are grayish brown to light gray. The A2 horizon is very pale brown to pale brown. The B horizon is more than 40 inches thick, and is sandy loam to sandy clay loam. It is commonly brownish yellow and strong brown to yellowish red mottled with pale brown, light gray, and red. Troup sand (Tr).-This is a well-drained soil on smooth, broad, and slightly rounded divides. Slopes are 0 to 6 percent. The mapped areas are about as broad as long and range from about 10 to more than 100 acres in size. The surface layer is grayish-brown to light-gray sand 40 to 72 inches thick. The subsoil is brownish-yellow and strong-brown to yellowish-red, friable sandy loam to sandy clay loam more than 40 inches thick (fig. 9). Included with this soil in mapping were some areas of Wagram, Kenansville, Leon, and Lakeland soils. Infiltration is rapid, and surface runoff is slow. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is fairly well suited to a few locally grown crops. The principal trees in wooded areas are longleaf pine and turkey oak. Because the surface layer is thick sand, this soil has severe limitations of droughtiness, leaching, low fertility, and soil blowing. Intensive con- servation practices are needed to effectively control soil blowing and reduce leaching and droughtiness in culti- vated areas. Most of the acreage is forested, and the rest is cultivated and pastured. Capability unit IIIs-1; wood- land group 3s2. Wagram Series The Wagram series consists of well-drained, nearly level to strongly sloping soils on smooth, slightly convex and rounded sides of broad divides. These soils formed in Coastal Plain sediments. The seasonal high water table remains below a depth of 5 feet. In a representative profile, the surface layer is grayish- brown loamy sand about 8 inches thick over pale-brown loamy sand about 20 inches thick. The subsoil is about 40 inches thick and is dominantly yellowish-brown, friable sandy clay loam. Below the subsoil, to a depth of about 86 inches, is brownish-yellow, friable sandy clay loam containing pockets of loamy sand. Wagram soils are low to very low in natural fertility and organic-matter content. They have moderately rapid permeability, low available water capacity, and low shrink-swell potential. Crops grown on these soils respond well to lime and fertilizer. Wagram soils are important for farming. Most of the acreage is cultivated, and the rest is pastured and forest- ed. Low to very low fertility, leaching, droughtiness, slope, and soil blowing are the major limitations for use of these soils. Representative profile of Wagram loamy sand, 0 to 6 percent slopes, 0.8 mile northeast of Patetown, 0.5 mile east of Road 1523, and 50 feet north of farm road, in a cultivated field : Ap-0 to 8 inches, grayish-brown (10YR 5/2) loamy sand; weak, medium, granular structure ; very friable, many small roots ; medium acid ; abrupt, smooth boundary. Figure 9-Profile of Troup sand. ? 4-s le h- rn to le ut t id ,w A he It- 3s, se 6 ile in A; de, a )th WAYNE COUNTY, NORTH CAROI.1NA A2-8 to 28 inches, pale-brown (10YR 6/3) loamy sand; weak, medium, granular structure; very friable; few small roots ; very strongly acid ; clear, wavy boundary. B1-28 to 31 inches, light yellowish-brown (10YR 6/4) sandy loam; eommon, medium, faint, pale-brown (10YR 6/3) mottles; weak, fine, subangular blocky struc- ture ; friable, slightly sticky and slightly plastic ; few small roots ; very strongly acid ; gradual, wavy boundary. B21t-31 to 45 inches, yellowish-brown (10YR 5/8) sandy clay loam; few, medium, faint, strong-brown (7.5YR 5/8) mottles; weak, fine, subangular blocky struc- ture; friable, slightly sticky and slightly plastic; thin discontinuous clay films on faces of peds ; very strongly acid ; gradual, wavy boundary. B22t-45 to 54 inches, yellowlsh-brown (10YR 5/4) sandy clay loam ; common, medium, distinct pale-brown (10YR 6/3), and strong-brown (7.5YR 5/8) mot- tles, and few, fine, prominent, red (2.5YR 5/8) mot- tles ; weak, fine, subangular blocky structure ; fri- able, slightly sticky and slightly plastic ; thin dis- continuous clay films on faces of peds; very strongly acid; clear, wavy boundary. B3t-54 to 68 inches, yellowish-brown (10YR 5/4) sandy clay loam ; common, medium, distinct, light-gray (10YR 7/1) mottles, and common, medium, promi- nent, red (2.5YR 5/8) mottles; weak, fine, sub- angular blocky structure ; friable, slightly sticky and slightly plastic ; thin discontinuous clay films on faces of peds; very strongly add; clear, irregular boundary. C-68 to 86 inches, brownish-yellow (10YR 6/6) sandy clay loam with pockets of loamy sand; common, medium, distinct, light-gray (10YR 7/1) mottles, and com- mon, coarse, prominent, red (2.5YR 5/8) mottles; massive ; friable, slightly sticky and slightly plastic-, very strongly acid. Wagram soils have a solum more than 60 inches thick. The A horizon ranges from 20 to 40 inches in thickness. The Ap and Al horizons range from grayish brown to gray. The A2 horizon is dominantly pale brown but ranges from light brownish gray to light yellowish brown. The B horizon ranges from about 40 to more than 60 inches in thickness and is sandy clay loam to sandy loam. It is yellowish brown and brownish yellow to strong brown mottled with light gray, pale brown, and strong brown in the lower part. The C horizon is brownish yellow to light gray and ranges from loamy sand to sandy clay loam. Wagram loamy sand, 0 to 6 percent slopes (WaB).- This is well-drained soil on slightly convex, smooth and broad divides. It has the profile described as representa- tive for the series. The mapped areas are irregular in shape and range from 10 to about 50 acres in size. The surface layer is grayish-brown to gray loamy sand 20 to 40 inches thick. The subsoil is yellowish-brown and brownish-yellow to strong-brown, friable sandy clay loam to sandy loam about 40 to more than 60 inches thick. Included with this soil in mapping were a few areas of Wagram soils that have a sandy surface layer. Also included were small areas of Bibb soils in short, narrow drainageways and some areas of Norfolk, Goldsboro, Ruston, and Troup soils. Infiltration is rapid, and surface runoff is slow. The soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is suited to most locally grown crops, mainly tobacco, corn, soybeans, and small grain. Because . the surface layer is sandy, low fertility, leaching, droughti- ness, and soil blowing are moderate limitations. Conser- vation practices are needed to effectively control soil blowing and to reduce leaching and droughtiness where 33 this soil is cultivated. Most of the acreage is cultivated, and the rest is pastured and forested. Capability unit IIs-1; woodland group 3s2. Wagram loamy sand, 6 to 10 percent slopes (WaQ.- This is a well-drained soil on short sides of divides. The mapped areas are long and narrow in shape and ranggee from 5 to 20 acres in size. The surface layer is grayish- brown to gray loamy sand 20 to 40 inches thick. The sub- soil is yellowish-brown and brownish-yellow to strong- brown, friable sandy clay loam to sandy loam about 40 to more than 60 inches thick. Included with this soil in mapping were a few areas of Wagram roils that have a sandy surface layer. Also included were some areas of Norfolk, Ruston, and Craven soils. Infiltration is rapid, and surface runoff is medium. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is fairly well suited to most locally gown crops but the size and shape of mapped areas limit its use for row crops. Because of slope, erosion is a severe haz- ard, and intensive conservation practices are needed to control runoff and erosion where this soil is cultivated. Other limitations for use of this soil are low to very low fertility, leaching, droughtiness, and soil blowing. Most of the acreage is forested, and only a small acreage is pastured and cultivated. Capability unit IIIe^3; wood- land group 3s2. Wagram loamy sand, 10 to 15 percent slopes (WaD).- This is a well-drained soil on short sides of divides. The mapped areas are long and narrow and range from about 5 to 20 acres in size. The surface layer is grayish-Brown to gray loamy sand 20 to 40 inches thick. The subsoil is yelllowish-Jbrown and brownish-yellow to strong-brown, friable sandy clay loam to sandy loam about 40 to more than 60 inches thick. Included with this soil in mapping were a few areas of Wagram soils that have a sandy surface layer. Also included were some areas of Kalmia, Craven, and Troup soils. Infiltration is rapid, and surface runoff is medium. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is fairly well suited to most locally grown crops, but the size and shape of mapped areas limit its use for row crops. Erosion is a very severe hazard be- cause of slope. Intensive conservation practices are needed to control runoff and erosion where this soil is cultivated. Other limitations for use of this soil are low to very low fertility, leaching, droughtiness, and soil blowing. Nearly all of the acreage is forested, and only a very small acreage is pastured or cultivated. Capability unit IVe-2; woodland group 3s2. Weston Series The Weston series consists of poorly drained, nearly level soils on smooth flats and in depressions on uplands and terraces. These soils formed in Coastal Plain and stream sediments. The seasonal high water table is at the surface. In a representative profile, the surface layer is dark- gray and grayish-brown loamy sand about 13 inches X46 16 SOIL SURVEY few small roots; most sand grains uncoated; strong- ly add ; clear, smooth boundary. B1 24 to 26 inches, yellowish-brown (10YR 5/6) loamy sand ; weak, fine, subangular blocky structure ; very friable, nonsticky and nonplastic; few small roots; thin clay coating and weak bridging of sand grains ; strongly acid; clear, smooth boundary. 112t-26 to 37 inches, yellowish-brown (10YR 5/8) sandy loam ; weak, fine, subangular blocky structure ; fri- able ; slightly sticky and slightly plastic ; few small roots; clay coating and bridging of sand grains; strongly acid ; clear, wavy boundary. B"7 to 40 inches, brownish-yellow (10YR 6/6) loamy sand; weak, fine, subangular blocky structure; very friable, nbl*ticky and nonplabtic; very thin clay coating and weak bridging of sand grains ; very strongly acid; clear, irregular boundary. C1-40 to 61 inches, yellow (10YR 7/6) sand; common, me- dium, faint, brownish-yellow (10YR 6/6) mottles, and few, fine, light-gray mottles ; few, medium, prominent, dark-red (2.5YR 3/6), weakly cemented nodules ; single grain ; loose ; nonsticky and. non. Plastic; one-half of sand grains have faint clay coatings ; very strongly add. C2-61 to 70 inches, gray (10YR 6/1) loamy sand with pockets of sandy loam ; common, medium, distinct, yellow (10YR 7/6) and strong-brown (7.5YR 5/6) mottles ; massive ; friable ; very strongly add. Kenansville soils have a solum that ranges from 30 to 50 inches in thickness. The A horizon is 20 to 30 inches thick. The Ap and Al horizons are grayish brown to gray. The A2 horizon is pale brown to very pale brown. The B horizon is 10 to about 20 inches thick. It is light yellowish brown to strong brown and, in places, is mottled with strong brown and red. The Bt horizon is sandy loam, and the BI and B3 horizons are commonly loamy sand. The C horizon is yellow to gray and ranges from sand to loamy sand. Kenansville loamy sand (Ke).-This is a well-drained soil on broad, smooth flats and slightly convex divides. Slopes are 0 to 6 percent. The mapped areas are about twice as long. as wide and range from 5 to as much as 400 acres in size. The surface layer is grayish-brown to loamy sand 20 to 30 inches thick. The subsoil is light yellowish-brown to strong-brown, very friable to friable sandy loam and loamy sand about 10 to 20 inches thick. Included with this soil in mapping were a few areas of a Kenansville soil that has a sand surface layer. Also included were areas of Wagram, oup, and Lakeland soils. Infiltration is moderately rapid, and surface runoff is slow. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is fairly well suited to most locally grown crops. It is used mainly for corn, tobacco, soybeans, and small grain. Because the surface layer is thick loamy sand, this soil has moderate limitations of low fertility, leaching, and droughtiness. Where it is cultivated, con- servation practices are needed to control soil blowing and reduce leaching and droughtiness. Most of the acreage is cultivated, and the rest is pastured or forested. Capa- bility unit IIs-1; woodland group 3s2. Kinston Series The Kinston series consists of poorly drained, nearly level soils on low flood plains. These soils formed in recent alluvium. The seasonal high water table is at the surface. In a representative profile, the surface layer is dark- gray loam about 5 inches thick. The subsoil is about 55 inches thick and is gray mottled with brownish yellow, strong brown, brown, and light gray. The upper part of the subsoil is friable loam, and the lower part is fri- able clay loam. Below the subsoil, to a depth of about 72 inches, is gray sand mixed with some loamy sand and gravel. Kinston soils are low to medium in natural fertilityy and medium in organic matter content. They have in erate permeability, high available water capacity, and low shrink-swell potential. These soils are flooded very frequently for long periods. Crops grown on these soils respond fairly well to lime and fertilizer. Kinston soils are not important for farming. Most of the acreage is in mixed hardwoods, and the rest is mainly in pasture. Only a small acreage is cultivated. A seasonal high water table, very frequent floods, and surface ponding are the major hazards limiting the use of these soils. Representative profile of Kinston loam, a mile west of Goldsboro, 500 feet east of Little River bridge, and 100 feet north of State Route 581, in a wooded area on the flood plain : 01-1 inch to 0, dark-brown (7.5YR 3/2), partially de- composed hardwood leaves and grass; abrupt, smooth boundary. A1-0 to 5 inches, dark-gray (10YR 4/1) loam; moderate, medium, granular structure ; friable ; many small roots ; strongly add ; clear, wavy boundary. Big-5 to 12 inches, gray (10YR 6/1) loam ; common, fine, distinct, brownish-yellow mottles ; weak, medium, granular structure; friable; slightly sticky and slightly plastic ; many small roots ; strongly acid ; clear, wavy boundary. 1329--12 to 48 inches, gray (10YR 6/1) clay loam ; common, fine, distinct, strong brown mottles, and common, medium, distinct, brownish-yellow (10YR 6/6) mot. tles ; weak, medium, subangular blocky structure ; friable, slightly sticky and plastic ; few small roots ; few large pores coated with silt ; strongly acid ; gradual, smooth boundary. B3g-48 to 60 inches, gray (10YR 5/1) clay loam with thin strata of sandy loam ; few, fine, distinct, brown mottles, and , common, medium, faint, light-gray (10YR 7/1) mottles; massive; friable, slightly sticky and plastic; some pores coated with silt; strongly acid ; gradual, smooth boundary. IICg-60 to 72 inches, gray (10YR 5/1) sand with strata of loamy sand and gravel; single grain, loose, non- sticky and nonplastic ; strongly add. Kinston soils have a solum that ranges from 40 to about 72 inches in thickness. The A horizon is 4 to 10 inches thick and is dark gray to gray. The B horizon is 36 to about 62 inches thick and is loam to clay loam. It is dominantly gray, but ranges from dark gray to light gray and com- monly is mottled with brownish yellow, strong brown, and brown. The C horizon is gray to light gray and ranges from sand to gravelly loamy sand. Kinston loam (Kn).-This is a poorly drained soil on flood plains. Slopes are 0 to 2 percent. The mapped areas are long, narrow bands along the larger streams. The surface layer is dark-gray to gray loam 4 to 10 inches thick. The subsoil is friable loam to clay loam 36 to 62 inches thick. It is dominantly gray, but ranges from dark gray to light gray, and is commonly mottled with brownish yellow, strong brown, and brown. Included with this soil in mapping were a few areas of Kinston soils that have a silt loam and sandy loam 47 Ly ly t; to a- at :k at ty in is ie rs i2 m ;h is m WAYNX COUNTY, NORTH CAROIMU surface layer. Also included were areas of Johnston, Chewacla, and Bibb soils. Infiltration is moderate, and surface runoff is slow. The water ponds in some places. This soil is easy to keep in good tilth and can be worked throughout a wide ranggee of moisture content. Where artificially drained, this soil is sited to a few locally grown crops. The main crops are corn, soybeans, and pasture. Wetness is a very severe limitation because of the seasonal high water table, very frequent floods, and surface ponding. Surface and subsurface drainage and protection from floods are needed for most crops. Most of the acreaggee is in mixed hardwoods and pines. Capability unit IVw-4; woodland group 10. Lakeland Series The Lakeland series consists of excessively drained, nearly level to gently sloping soils in broad, undulating areas and rounded divides on uplands and terraces. These soils formed in Coastal Plain and stream sediments. The seasonal high water table remains below a depth of 5 feet. In a representative profile, the surface layer is dark- y sand about 8 inches thick. This is underlain by ravers of loose sand about 77 inches thick that are light yellowish brown, strong brown, and yellow. The under- lying layer, to a depth of about 100 inches, is light-gray, loose sand. The Lakeland soils are very low in natural fertility and organic-matter content. They have rapid perm eabilityy very low available water capacity, and low shrink-swel? potential. Crops grown on these soils respond rather poorly to lime and fertilizer. Lakeland soils are not important for farming. Most of the acreage is wooded, mainly with longleaf pine and turkey oak. Very low fertility, leaching, droughtiness, and soil blowing are the major limitations for use of these soils. Representative profile of Lakeland sand, 9 miles south of Goldsboro, 0.7 mile east of intersection of Roads 1915 and 1120,100 feet north of Road 1120, in a wooded area ; A1-0 to 8 inches, dark-gray (10YR 4/1) sand ; single grain ; loose, nonsticky and nonplastic ; few small roots ; common small particles of organic matter ; about one-half of sand grains have thin coating of or. ganic matter; strongly add; clear, wavy boundary. C1-8 to 80 inches, light yellowish-brown (10YR 6/4) sand; single grain ; loose, nonsticky and nonplastic ; coated; very strongly add; gradual, wavy boundary. C2-80 to 54 inches, strong-brown (7.5YR 5/8) sand; single grain ; loose, nonsticky and nonelastic ; coated ; very strongly add ; gradual, wavy boundary. C8--54 to 66 inches, strong-brown (7.5YR 5/8) sand; single grain ; loose, nonsticky and nonplastic ; common clean sand grains ; very strongly add ; gradual, wavy boundary. C4--6 to 80 inches, yellow (10YR 7/6) sand;.few, medium, faint-brown (10YR 5/8) mottles, and common, fine, distinct, very pale-brown mottles ; single grain ; loose, nonsticky and nonelastic ; common clean sand grains ; strongly add ; gradual, wavy boundary. C5-W to 100 inches, light-gray (10YR 7/2) sand; single grain ; loose, nonsticky and nonplastic ; uncoated ; strongly add. Lakeland soils are sands more than 72 inches thick. The A horizon is 2 to 8 inches thick and is dark gray tQ pale brown. The C horizon ranges from light yellowish brown to strong brown in the upper part and from yellow 17 to light gray in the lower part. Sand grains in the upper part of the C horizon have thin coatings of silt and clay. Lakeland sand (la).-This is an excessively drained, sandy soil in broad, undulating areas and on rounded di- vides. Slopes are 0 to 6 percent. The mapped areas are wide and long and range from 20 to several hundred acres in size. The surface layer is dark-gray to pale- brown sand 2 to 8 inches thick. The underlying layers, to a depth of 72 inches or more, are sand that is light yellowish brown to strong brown in the upper part and yellow to light gray in the lower part. Included with this soil in mapping were some areas of Kenansville Wagram, and Troup soils. Also included were some small, narrow areas of Rimini and Leon soils. Infiltration is rapid, and surface runoff is slow. This soil is fairly easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is fairly well suited to a few locally grown crops. Because this soil is very deep sand, it has very severe limitations of droughtiness, leaching, very low fertility, and susceptibility to soil blowing. Intensive conservation practices are needed to control soil blowing and to reduce leaching and droughtiness where this soil is cultivated. Most of the acreage is forested. The cleared acreage is mainly idle, and the rest is cultivated and pastured. Capability unit IVs-1; woodland group 4s2. Leaf Series The Leaf series consists of poorly drained, nearly level soils on broad, smooth flats on terraces and in shallow dramageways on uplands. These soils formed in stream and Coastal Plain sediments. The seasonal high water table is at the surface. In a representative profile, the surface layer is dark- gray loam about 9 inches thick. The subsoil is about 61 inches thick. The upper part is gray, firm clay loam over gray and light-gray, very firm clay. The lower part is light-gray, firm clay loans. Below the subsoil, to a depth of about 110 inches, is light-gray, friable clay loam over gray sandy loam. Leaf soils are medium in natural fertility and low in organic-matter content. They have slow permeability, high available water capacity, and high shrink-swell po- tential. Most of the acreage is subject to infrequent floods for short periods. Crops grown on these soils respond well to lime and fertilizer. Leaf soils are not important for farming. Most of the acreage is forested or pastured. A seasonal high water table, surface ponding, and, in places, infrequent floods are the major hazards limiting the use of these soils. Representative profile of Leaf loam, 2 miles west of Goldsboro, 0.8 mile south of North Carolina State Hospi- tal dairy farm on State Route 581, and 50 feet west of farm road, in a pasture : Ap-0 to 9 inches, dark-gray (10YR 4/1) loam, moderate, medium, granular structure ; friable ; many small roots ; slightly add ; clear, smooth boundary. B1g-41 to 14 inches, gray (10YR 5/1) clay loam; few, line, distinct, brownish-yellow mottles ; moderate, fine, subangular blocky structure ; firm, sticky and plas- tic ; many small roots ; common small pores filled with dark gray surface soil; strongly add; clear, wavy boundary. I4$ 24 SOIL SURVEY These soils have siliceous mineralogy that is outside the defined range for the series, but -this difference does not alter their usefulness or behavior. Nixonton very fine sandy loam (Nf).-This is a mod- erately well drained soil on broad, smooth, interstream divides. Slopes are 0 to 2 percent. The mapped areas are near shallow drainageways and range from 10 to 30 acres in size. The surface layer is grayish-brown or gray to pale-brown very fine sandy loam 8 to 20 inches thick. The subsoil is pale-brown or light yellowish-brown to brownish-yellow, very friable very fine sandy loam to silt loam about 27 to 40 inches thick. It is mottled with light gray, gray, strong brown, or brownish yellow in the lower part. Included with this soil in mapping were a few areas of Nixonton soils that have a loam or silt loam surface layer. In some areas are soils that are weakly cemented in the lower part of the subsoil but otherwise are similar to Nixonton soils. Some areas of Barclay and Exum soils were also included. Infiltration is moderate, and surface runoff is slow. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is well suited to all locally grown crops. It is used chiefly for corn, soybeans, tobacco, truck crops, and small grain. Wetness is a moderate limitation be- cause of the seasonal high water table. Artificial drainage is needed for tobacco and other crops that require good drainage. Most of the acreage is cultivated, and the rest is pastured or wooded. Capability unit IIw-1; wood- land group 2o7. Norfolk Series The Norfolk series consists of well-drained, nearly level to sloping soils on broad, smooth, slightly convex divides. These soils formed in Coastal Plain sediments. The sea- sonal high water table remains below a depth of 5 feet. In a representative profile, the surface layer is grayish- brown and pale-brown loamy sand about 11 inches thick. Figure 5. Water stands on somewhat poorly drained Nahunta very fine sandy loam following a heavy rain. a it is, e- 7 le id st d- -el 3s. :a- A. h- ;k. WAYN,E COUNTY, NORTH CAROLINA The subsoil is about 64 inches thick and is dominantly yellowish-brown and brownish-yellow, friable sandy clay loam. Norfolk soils are low in natural fertility and organic- matter content. They have moderate permeability, me- dium available water capacity, and low shrink-swell po- tential. Crops grown on these soils respond well to appli- cations of lime and fertilizer. Norfolk soils are the most important soils for farming in Wayne County. Most of the acreage is cultivated, and the rest is pastured and forested. Slope is the major limitation for use of these soils. Representative profile of Norfolk loamy sand, 0 to 2 percent slopes, 3 miles west of Pikeville, 0.1 mile north of intersection of Roads 1320 and 1002, fifty feet west of Road 1320, in a cultivated field : Ap-0 to 8 inches, grayish-brown (10YR 5/2) loamy sand; weak, medium, granular structure ; very friable ; many small roots ; medium acid ; abrupt, smooth boundary. A2-8 to 11 inches, pale-brown (10YR 6/3) loamy sand; weak, medium, granular structure ; very friable ; many small roots ; few small pores filled with gray- ish-brown surface soil; medium acid; clear, wavy boundary. B1-11 to 14 inches, light yellowish-brown (10YR. 6/4) sandy loam ; weak, fine, subangular blocky struc- ture ; friable, slightly sticky and slightly plastic, many small roots ; few small pores filled with gray- ish-brown surface soil ; clay coating and bridging on most sand grains; strongly acid; clear, wavy boundary. B21t-14 to 34 inches, yellowish-brown (10YR 5/8) sandy clay loam ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; com- mon small roots ; thin discontinuous clay films on faces of peds and in pores ; very strongly acid ; gradual, wavy boundary. B22t-34 to 48 inches, brownish-yellow (10YR. 6/8) sandy clay loam ; few, fine, distinct, red mottles ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; few small roots ; thin clay films on faces of peds and in pores ; very strongly acid ; gradual, wavy boundary. B23t-48 to 65 inches, yellowish-brown (10YR 5/6) sandy clay loam ; common, fine, distinct, gray mottles, and common, medium, prominent, yellowish-red (5YR 5/8) mottles; weak, fine, subangular blocky struc- ture ; friable, slightly sticky and slightly plastic ; thin clay films on faces of peds and in pores; very strongly acid ; gradual, wavy boundary. B3t-65 to 75 inches, yellowish-brown (10YR 5/8) sandy clay loam ; common, medium, distinct, light-gray (10YR 7/1) and strong brown (7.5YR 5/6) mottles, and common, fine, prominent, yellowish-red mottles ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; thin discon- tinuous clay films on faces of peds and in pores ; few nodules thickly coated with clay ; very strongly acid. Norfolk soils have a solum more than 60 inches thick. The A horizon ranges from 4 to 20 inches in thickness and is loamy sand to sandy loam. The Ap and Al horizons are grayish brown in the uneroded areas to yellowish brown in the more eroded areas. The A2 horizon is pale brown to light yellwwish brown. The B horizon is more than 56 inches thick and is sandy clay loam to sandy loam. It is commonly yellowish brown and brownish yellow but ranges from light yellowish brown to strong brown. It is mottled with gray, light gray, strong brown, and yellowish red in the lower part. Norfolk loamy sand, 0 to 2 percent slopes (NoA).- This is a well-drained soil on smooth, broad divides. It 25 has the profile described as representative of the series. The mapped areas are irregular in shape and range from 5 to about 200 acres in size. The surface layer is grayish- brown loamy sand 10 to 20 inches thick. The subsoil is friable sandy clay loam to sandy loam more than 56 inches thick (fig. 6). It is commonly yellowish brown and brownish yellow but ranges from light yellowish brown to strong brown. Included with this soil in mapping were a few areas of Norfolk soils that have a sandy loam or very fine sandy loam surface layer. Also included were some areas of Goldsboro, Ruston, and Wagram soils. Infiltration is moderate, and surface runoff is slow. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is well suited to all locally grown crops and is used mainly for tobacco, corn, soybeans, truck crops, cotton, and small grain. Tobacco is especially well suited. There are no major hazards or limitations to intensive use of this soil for farming or other uses. Almost all of Figure 6.-Profile of Norfolk loamy sand, 0 to 2 percent slopes. 150 26 SOIL SURVEY the acreage is cultivated. Capability unit I-1; woodland group 2ol. Norfolk loamy sand, 2 to 6 percent slopes (NoB).- This is a well-drained soil on smooth sides of divides. The mapped areas are elongated and range from 5 to 30 acres in size. The surface layer is grayish-brown loamy sand 10 to 20 inches thick. The subsoil is friable sandy clay loam to sandy loam more than 56 inches thick. It is commonly yellowish brown and brownish yellow, but ranges from light yellowish brown to strong brown. Included with this soil in mapping were a few areas of Norfolk soils that have a loam or very fine sandy loam surface layer. Also included were small areas of Bibb soils in short, narrow drainageways and areas of Ruston, Goldsboro, and Wagram soils. Infiltration is moderate, and surface runoff is medium. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is well suited to all locally grown crops. It is used mainly for corn, tobacco, soybeans, truck crops, and small grain. Tobacco is especially well suited (fig. 7 ) . Because of slope, the erosion hazard is moderate and conservation practices, such as contour row arrangement, are needed to effectively control runoff and erosion where this soil is cultivated. Nearly all of the acreage is culti- vated and pastured. The rest is forested. The forested areas are on the shortest slopes of this mapping unit. Capability unit Ile-1; woodland group 2ol. Norfolk loamy sand, 6 to 10 percent slopes (NoC).- This is a well-drained soil on short sides of divides. The mapped areas are long and narrow and range from 5 to 20 acres in size. The surface layer is grayish-brown loamy sand 8 to 20 inches thick. The subsoil is friable sandy clay loam to sandy loam more than 56 inches thick. It is commonly yellowish brown and brownish yellow but ranges from light yellowish brown to strong brown. Included with this soil in mapping were a few areas of Norfolk soils that have a sandy loam or very fine sandy loam surface layer. Also included were a few areas of Ruston, Wagram, Craven, and Kalmia soils. Infiltration is moderate, and surface runoff is medium. This soil is easy to keep in food tilth and can be worked over a wide range of moisture content. This soil is well suited to most locally grown crops, but the size and shape of the mapped areas limit use for row crops. Because of slope, the erosion hazard is severe, and intensive conservation practices are necessary to effectively control runoff and erosion in cultivated areas. Most of the acreage is forested. The rest is pastured or cultivated. Capability unit IIIe-1; woodland group 2o1. Figure 7.-Tobacco and corn on Norfolk loamy sand, 2 to 6 percent slopes. /S/ 28 SOIL SURVEY cultivated. The dominant trees in forested areas are lob- lolly pine, but pond pine and hardwoods also grow. A seasonal high water table and surface ponding are the major hazards limiting the use of these soils. Representative profile of Pantego loam, 6.4 miles east of Goldsboro and 400 feet north of U.S. Highway No. 70, in a cultivated field : Ap-0 to 9 inches, black (10YR 2/1) loam ; weak, medium, granular structure ; very friable ; many small roots ; strongly acid; clear, wavy boundary. A2-9 to 12 inches, very dark gray (10YR 3/1) loam ; com- mon, medium, distinct, light brownish-gray (10YR 6/2) mottles; weak, medium, granular structure; very friable ; many small roots ; common small pores filled with black surface soil; very strongly acid; clear, wavy boundary. B1g-12 to 16 inches, gray (10YR 5/1) sandy clay loam; few, fine, distinct, brownish-yellow mottles ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; common small pores filled with black surface soil ; thin discontinuous clay films on faces of peds ; very strongly acid ; clear, wavy boundary. B21tg-16 to 46 inches, light brownish-gray (10YR 6/2) sandy clay loam ; common, coarse, distinct, brownish. Yellow (10YR 6/6) mottles, and few, fine, prominent, yellowish-red mottles ; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plas. tic ; thin discontinuous clay films on faces of peds ; extremely add; gradual, wavy boundary. B22tg-46 to 54 inches, gray (10YR 6/1) sandy clay loam; common, medium, distinct, strong brown (7.5YR 5/6) mottles, and few, fine, prominent, yellowish- red mottles; weak, fine, subangnlar blocky strue. tore ; friable, slightly sticky and slightly plastic ; clay films in large pores ; extremely add ; gradual, wavy boundary. B39-54 to 65 inches, light-gray (2.5Y 7/2) sandy loam, pockets of sandy clay loam ; few, fine, prominent, strong-brown mottles ; massive ; friable, slightly sticky and slightly plastic; clay films in large pores; extremely acid. Pantego soils have a solum more than 60 inches thick. The A horizon ranges from 10 to 20 inches in thickness and is black to very dark gray. The B horizon is more than 50 inches thick and is sandy clay loam to sandy loam. It is gray or light gray to light brownish gray mottled with brownish yellow, strong brown, and yellowish red. Pantego loam (Po).-This is a very poorlyy drained soil in oval depressions and wide, shallow drainageways. Slopes are less than 2 percent. The mapped areas are generally as long as :they are wide and range from 5 to 150 acres in size. The surface layer is black to very dark pray loam 10 to 20 inches thick. The subsoil is gray or light gray to light brownish-gray, friable sand clay loam to sandy b wloam more than 50 inches thick. It is mottled with ro nish yellow, strong brown, and yellowish red. Included with this soil in mapping were areas of Pan- tego soils that have a sandy loam surface layer. Also included were some areas of Rains soils. Infiltration is moderate, and surface runoff is very slow. The water ponds in some places. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. Where artificially drained, this soil is well suited to a few locally grown crops, mainly corn and soybeans. Wetness is a severe limitation because of the seasonal high water table and surface ponding, and surface and subsurface drainage is needed where this soil is culti- vated or pastured. Nearly all the acreage is forested with loblolly pine and mixed hardwoods. The rest is pastured and cultivated. Capability unit IIIw-3; woodland group 1w9. Rains Series The Rains series consists of poorly drained, nearly level soils on broad, smooth flats on lnterstream areas and in oval depressions. These soils formed in Coastal Plain sediments. The seasonal higgh water table is at the surface. In a representative profile, the surface layer is dark gray and gray sandy loam about 13 inches thick. The subsoil is about 65 inches thick. The upper part is gray, friable sandy loam 'and sandy clay loam mottled with brownish yellow, dark grayish brown, yellowish brown, and yellowish red. The lower part is gra , friable sandy loam that contains pockets of sandy clay loam. Rains soils are low in natural fertility and organic- matter content. They have moderate permeability, me- dium available water capacity, and low shrink-swell po- tential. Crops grown on these soils respond well to lime and fertilizer. Rains soils are important for farming. Most of the acreage is in forest; and the rest is cultivated and pas- tured. A seasonal high water table and surface ponding are the major hazards limiting the use of these soils. Representative profile of Rains sandy loam, 0.5 mile south of Nahunta School, 100 feet east of State Route 581, in a cultivated field : Ap-0 to 10 inches, dark-gray (10YR 4/1) sandy loam, weak, medium, granular structure; very friable ; many small roots; strongly add; abrupt, smooth boundary. A2-10 to 13 inches, gray (10YR 6/1) sandy loam; weak, medium, granular structure ; very friable ; many small roots ; many small pores ; very strongly acid ; clear, wavy boundary. BIg-13 to 18 inches, gray (10YR 5/1) sandy loam; few, medium, distinct, brownish-yellow (10YR 6/6) mot- tles; weak, fine, subangular blocky structure; fri- able, slightly sticky and slightly plastic ; common small pores ; very strongly acid ; clear, wavy bound- ary. B21tg-18 to 36 inches, gray (10YR 6/1) sandy clay loam; common, medium, distinct, brownish-yellow (10YR 6/6 mottles ; weak, fine, subangular blocky struc- ture; friable, slightly sticky and slightly plastic ; thin discontinuous clay films on faces of peds and in pores ; common small pores ; very strongly acid ; gradual, wavy boundary. B22tg-36 to 55 inches, gray (10YR 5/1) sandy clay loam; common, medium, faint, dark grayish-brown (10YR 4/2) mottles, common, fine, distinct yellowish-brown mottles, and few, fine, prominent, yellowish-red mottles; weak, fine, subangular blocky structure; friable, slightly sticky and slightly plastic; thin discontinuous clay films on faces of peds and in pores ; few large root holes ; very strongly acid ; gradual boundary. B3g--55 to 78 inches, gray (10YR 5/1) sandy loam; pockets of sandy clay loam ; few, fine, faint, light-gray mot- tles, and few, fine, distinct, brownish-yellow mottles; massive; friable, slightly sticky and slightly plastic; few large root holes ; extremely acid. Rains soils have a solum more than 60 inches thick. The A horizon ranges from 10 to 15 inches in thickness and is dark gray or gray to very dark gray. The very dark gray part of the A horizon, where present, is less than 8 inches thick. The B horizon is more than 50 inches thick and is sandy clay loam to sandy loam. It is gray to light gray mot- tled with dark grayish brown, brownish yellow, yellowish brown, and yellowish red. l dl n It d R. n d n n t- t; ie is .y es is t- ih WAYNE COUNTY, NORTH CAROLINA Rains sandy loam (Ra).-This is a poorly drained soil in oval depressions and on smooth flats in broad areas between streams. Slopes are 0 to 2 percent. The mapped areas are generally as wide as they are long and range from 5 to several hundred acres in size. The surface layer is dark-gray or gray to very dark gray sandy loam 10 to 15 inches thick. The very dark gray part of the surface layer, where present, is less than 8 inches thick. The sub- soil is gray to light-gray, friable sandy clay loam to sandy loam more than 50 inches thick. It is mottled with dark grayish brown, brownish yellow, yellowish brown, and yellowish red (fig. 8). Included with this soil in mapping were a few areas of Rains soils that have a loam and very fine sandy loam surface layer. Also included were some areas of Lynchburg, Pantego, and Torhunta soils. Infiltration is moderate, and surface runoff is slow. The water ponds in some places. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. Where artificially drained, this soil is well suited to a few locally grown crops, mainly corn and soybeans. 29 The principal trees in forested areas are loblolly pine. Wetness is a severe limitation because of surface pond- ing and the seasonal high water table. Surface and sub- surface drainage is needed where this soil is cultivated or pastured. Most of the acreage is in forest, and the rest is cultivated and pastured. Capability unit IIIw-3; woodland group 2w3. Rimini Series The Rimini series consists of excessively drained, nearly level soils in broad areas between the "Carolina Bays." These soils formed in Coastal Plain sediments. The seasonal high water table is at a depth of about 212 feet. In a representative profile, the surface layer is gray sand about 9 inches thick. The subsurface layer is light- gray sand about 45 inches thick. Below this, to a depth of about 75 inches, is very dark-brown, friable, weakly cemented sand. Rimini soils are very low in natural fertility and or- ganic-matter content. They have moderate permeability, very low available water capacity, and very low shrink- swell potential. Crops grow rather poorly. Rimini soils are not important for farming. Most of the acreage is in forest. Very low fertility, leaching, droughtiness, and soil blowing are the major hazards limiting the use of these soils. Representative profile of Rimini sand, 12 miles south of Goldsboro, 1.1 miles southeast of intersection of State Route 111 and Road 1744, 50 feet south of light pole number 1231, in a wooded area : OI-a inch to 0, dark reddish-brown, partially decomposed leaves ; many small roots. All-O to 4 inches, gray (10YR 5/1) sand; single grain; loose ; many small roots ; very strongly acid ; clear, wavy boundary. A12-4 to 9 inches, gray (10YR 6/1) sand; single grain; loose ; many small roots ; very strongly acid ; clear, wavy boundary. A21-9 to 18 inches, light-gray (10YR 7/2) sand; common, medium, faint, brown (10YR 5/3) mottles, a few of which are weakly cemented ; single grain ; loose ; common small roots ; faint coatings on one-half of sand grains ; strongly acid ; gradual, wavy boundary. A22-18 to 54 inches, light-gray (10YR 7/2) sand; com- mon, fine, faint, pale-brown mottles ; single grain ; loose ; nonsticky and nonplastic ; few small roots ; very faint coatings on one-half of sand grains ; strongly acid ; gradual, wavy boundary. Bh-54 to 75 inches, very dark-brown (7.5YR 2/2 sand; massive ; friable ; weakly cemented ; nonsticky and nonplastic ; sand grains coated and bridged with humus ; strongly acid. Rimini soils have a solum that ranges from 35 to about 90 inches in thickness. The A horizon is 30 to 60 inches thick. The Ap and Al horizons are dark gray to gray. The A2 horizon is light gray to white. The Bh horizon ranges from 5 to 30 inches in thickness and is friable and weakly cemented sand to loamy sand. It is very dark brown or dark reddish brown to black. Rimini sand (Rm).-This is an excessively drained soil in broad areas mostly between the "Carolina Bays." Slopes are 0 to 2 percent. The mapped areas are about as wide as they are long and range from 10 to 40 acres in size. The surface and subsurface layers are dark-gray to gray sand and have a combined thickness of 30 to 60 inches. The subsoil is very dark-brown or dark reddish-brown to Figure 8.-Profile of Rains sandy loam. Is- 3 10 SOLI. SURVDY become cloddy if worked when wet. This affects ger- mination and causes poor or uneven crop growth. This soil is suited to most locally grown crops and is used for corn, soybeans, and small grain. The erosion hazard is moderate because of slope and slow permea- bility. Conservation practices are needed to effectively control runoff and erosion in cultivated areas. Most of the acreage is forested, and the rest is cultivated and pastured. Capability unit IIe-3; woodland group 3w2. Craven sandy loam, 6 to 10 percent slopes, eroded (CrC2).-This is a moderately well drained soil on short sides of divides. The mapped areas are narrow and long and range from 5 to 20 acres in size. The surface layer ranges from grayish brown in the less ero(red areas to yellowish brown in the more eroded areas and is dominantly sandy loam 4 to 8 inches thick. In places, it is a mixture of material from the original surface layer and from the subsoil. The subsoil is brownish- yellow to yellowish-red, very firm clay to firm clay loam 36 to 52 inches thick. It is mottled with gray, yellow, red, and strong brown in the lower part. Included with this soil in mapping were a few areas of Craven soils that have a surface layer of loamy sand or very fine sandy loam and some severely eroded spots where the subsoil is exposed. Also included were a few areas that have slopes greater than 10 percent. Some areas of Norfolk, Ruston, and Wagram soils were also included. Infiltration is moderately slow, and surface runoff is rapid. Because the surface layer is thin, this soil is difficult to keep in good tilth and can be worked within only a narrow range of moisture content. The severely eroded spots crust as they dry after a hard rain or become cloddy if worked when wet. This affects ger- mination and causes poor or uneven crop growth. This soil is fairly well suited to most locally grown crops, but the size and shape of the mapped areas limit their use for cultivation. The cleared areas are used chiefly for pasture, small grain, and hay crops. The erosion hazard is severe because of slope and slow per- meability. Intensive conservation practices are needed to control runoff and erosion in cultivated areas. Most of the acreage of this soil is forested, and the rest is chiefly cultivated or pastured. Capability unit IIIe-2; woodland group 3w2. Dragston Series The Dragston series consists of somewhat poorly drained, nearly level soils in smooth, flat areas on broad interstream divides on uplands and terraces. These soils formed in Coastal Plain and stream sediments. The sea- sonal high water table is about 11/2 feet below the surface. In a representative profile, the surface layer is dark gray and light brownish-gray loamy sand about 12 inches thick. The subsoil is about 36 inches thick. The upper part is pale-brown and light yellowish-brown, very fri- able and friable sandy loam, and the lower part is grayish-brown, very friable loamy sand. Below the sub- soil, to a depth of about 75 inches, is light-gray, loose sand. Dragston soils are low in fertility and organic-matter content. They have moderately rapid permeability, me- dium available water capacity, and low shrink-swell po- tential. Crops grown on these soils respond well to lime and fertilizer. Dragston soils are of minor importance for farming. About half of the acreage is cultivated, and the rest is pastured and forested. A seasonal high water table is the major limitation for use. Representative profile of Dragston loamy sand, 14 miles south of Goldsboro, 0.3 mile southeast of intersec- tion of Roads 1949 and 1744, 0.2 mile south of Road 1949, in a cultivated field : Ap-0 to 8 inches, dark-gray (10YR 4/1) loamy sand; weak, medium, granular structure ; very friable ; many small roots ; strongly acid ; clear, smooth boundary. A2-8 to 12 inches, light brownish-gray (10YR 6/2) loamy sand; weak, medium, granular structure; very fri- able ; many small roots ; strongly acid ; clear, wavy boundary. Blt-12 to 16 inches, pale-brown (10YR 6/3) sandy loam; common, medium, faint, light yellowish-brown (10YR 6/4) mottles; weak, fine, subangular blocky struc- ture ; very friable ; many small roots ; clay coating and bridging on sand grains ; very strongly acid ; clear, wavy boundary. B21t-16 to 28 inches, light yellowish-brown (10YR 6/4) sandy loam ; common, medium, faint, light brownish- gray (10YRR 6/2), and yellowish-brown (10YR 5/4) mottles ; weak, line, subangular blocky structure ; friable, slightly sticky and slightly plastic ; many small roots ; common pores ; thin, discontinuous clay films on faces of peds ; very strongly acid ; gradual, wavy boundary. B22t-28 to 42 inches, pale-brown (10YR 6/3) sandy loam; common, medium, faint, light-gray (10YR 7/1) and yellowish-brown (10YR 5/4) mottles; weak, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; common small roots ; thin dis- continuous clay films on faces of a few peds ; very strongly acid ; gradual, wavy boundary. Bag- 42 to 48 inches, grayish-brown (10YR 5/2) loamy sand; common, coarse, faint-brown (10YR 5/3) mottles, and common, medium, faint, light-gray (10YR 7/1) mottles; weak, fine, subangular blocky structure ; very friable, slightly sticky and non- elastic; thin clay coatings on sand grains; extremely acid ; gradual, irregular boundary. 09-48 to 75 inches, light-gray (10YR 7/1) uncoated sand and pockets of grayish-brown (10YR 5/2), faintly coated sand ; single. grain ; loose ; extremely acid. Dragston soils have a solum that ranges from 35 to 60 inches in thickness. The A horizon is 12 to 20 inches thick. The Ap and Al horizons are dark gray to grayish brown. The A2 horizon is light brownish gray to very pale brown. The Bt horizon is 23 to 40 inches thick. It is pale brown to yellowish brown and is mottled with light brownish gray, gray, brownish yellow, and strong brown. The lower part of the B horizon is grayer than the upper part. The C hori- zon is commonly light gray and ranges from uncoated sand to sandy loam. Dragston loamy sand (DO.-This is a somewhat poorly drained soil on broad, smooth flats of interstream divides. Slopes are 0 to 2 percent. The, mapped areas are wide and range from about 20 to 50 acres in size. The surface layer is-dark-gray to grayish-brown loamy sand 12 to 20 inches thick. The subsoil is pale-brown to yellowish- brown, friable sandy loam 23 to 40 inches thick and is mottled with gray, light brownish gray, brownish yellow, and strong brown. The lower part of the subsoil is grayer than the upper part. Included with this soil in mapping were a few areas of Dragston soils that have a sandy loam surface layer and a few areas of soils that have a thicker surface layer /s4 WAYNE COUNTY, NORTH CAROLINA but otherwise are similar to Dragston soils. Also included were some areas of Weston, Lynchburg, Rains, Johns, and Lumbee soils. Infiltration is moderate, and surface runoff is slow. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. Where artificially drained, this soil is well suited to most locally grown crops. Corn and soybeans are the main crops, but small grain, truck crops, and pasture crops are also important. The dominant trees in wooded areas are loblolly pine. This soil has a moderate wetness limitation because of a seasonal high water table. Drain- age is needed for most crops. About half of the acreage is cultivated. The rest is in pasture and forest. Capability unit IIw-2; woodland group 2w8. Exum Series The Egum series consists of moderately well drained, nearly level soils on. smooth, broad divides. These soils formed in Coastal Plain sediments. The seasonal high water table is at a depth of about 21h feet. In a representative profile, the surface layer is grayish- brown and pale-brown very fine sandy loam out 10 inches thick. The subsoil is about 55 inches thick and is yellowish-brown, friable clay loam in the upper part. The lower Part is light yyellowish=brown, friable loam mottled with light brownish &rray and red. Below the subsoil, to a depth of about 70 inches, is pale-brown, friable loam mottled with light gray, brownish yellow, and red. Exum soils are low in natural fertility and organic- matter content. They have moderate permeability, high available water capacity, and low shrink-swell potential. Crops grown on these soils respond well to lime and fertilizer. Exum soils are important for farming, and most of the acreage is cultivated. A seasonal high water table is the mayor hazard limiting the use of these soils. Representative profile of Exum very fine sandy loam, 0.3 mile west of Fremont, 50 feet south of Road 1359, in a cultivated field : Ap-0 to 9 inches, grayish-brown (10YR 5/2) very fine sandy loam ; weak, medium, granular structure ; very fri- able ; many small roots ; medium acid ; abrupt, smooth boundary. A2-9 to 10 inches, pale-brown (10YR 6/3) very fine sandy loam; weak, medium, granular structure; very fri- able ; many small roots ; common small pores filled with grayish-brown surface soil ; medium acid ; clear, wavy boundary. B21t-10 to 24 inches, yellowish-brown (10YR 5/6) clay loam ; moderate, fine, subangular blocky structure ; friable, sticky and plastic ; common small roots ; few small pores filled with grayish-brown surface soil ; thin, discontinuous clay films on faces of peds ; strongly acid; gradual, wavy boundary. B22t-24 to 40 inches, light yellowish-brown (10YR 6/4) loam ; common, medium, distinct, light brownish- gray (10YR 6/2) and red (2.5YR 5/8) mottles; moderate, fine, subangular blocky structure ; friable, slightly sticky and slightly plastic ; thin clay films on faces of peds and in pores ; very strongly acid ; gradual, wavy boundary. B3t---40 to 65 inches, light yellowish-brown (10YR 6/4) loam ; many, coarse, distinct, light brownish-gray (10YR 6/2) mottles, and few, medium, prominent, red (2.5YR 5/8) mottles; moderate, fine, subangular blocky structure ; friable, slightly sticky and slightly 11 plastic ; thin clay films on faces of peds and in pores ; very strongly acid; gradual, irregular boundary. C-65 to 70 inches, pale-brown (10YR 6/3) loam; many, coarse, distinct, light-gray (10YR 7/1) and brown- ish-yellow (10YR 6/6) mottles, and few, fine, promi- nent, red mottles; massive; friable, slightly sticky and slightly plastic; very strongly acid.. Exum soils have a solum that is more than 60 inches thick. The A horizon is 8 to 15 inches thick. The Ap and Al hori- zons are grayish brown to dark grayish brown, and the A2 horizon is pale brown to light yellowish brown. The B horizon is more than 50 inches thick and is loam to clay loam. The sand is dominantly very fine sand. The B horizon is pale brown to yellowish brown mottled with light brown- ish gray, brownish yellow, and red. The grayish mottles are within 30 inches of the surface. The C horizon is mot- tled pale brown, light gray, and brownish yellow, and is very fine sandy loam to clay loam. Egum very fine sandy loam (Ex).-This is a moderately well drained soil on broad, smooth divides. Slopes are 0 to 2 percent. The mapped areas are near shallow drainageways. These areas are nearly as wide as they are long and range from 10 to 24 acres in size. The surface layer is grayish-brown to dark grayish-brown very fine sandy loam 8 to 15 inches thick. The subsoil is pale-brown to yellowish-brown, friable loam to clay loam more than 50 inches thick. It is mottled with light brownish gray, brownish yellow, and red in the lower part. Included with this soil in mapping were a few areas of Exum soils that have a loam, silt loam, and fine sandy loam surface layer. In a few small areas are soils that have brittle consistence in the lower part of the subsoil but otherwise are similar to Exum soils. Some areas of Aycock, Nahunta, Norfolk, and Goldsboro soils were also included. Infiltration is moderate, and surface runoff is slow. The soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is well suited to all locally grown crops. It is used mainly for corn, soybeans, tobacco, small grain, and truck crops. Wetness is a moderate limitation because of the seasonal high water table. In places artificial drainage is needed for tobacco and other crops that require good drainage. Most of the acreage is cultivated. The rest is in pasture and forests. Capability unit IIw-1; woodland group 2w8. Goldsboro Series The Goldsboro series consists of moderately well drained, nearly level soils on smooth, broad divides. These soils formed in Coastal Plain sediments. The sea- sonal high water table is at a depth of about 21/2 feet. In a representative profile, the surface layer is grayish- brown and pale-brown loamy sand about 12 inches thick. The subsoil extends to a depth of about 76 inches. The upper part is brownish-yellow and yellowish-brown, fri- able sandy loam and sandy clay loam. The middle part is pale-brown, friable sandy clay loam mottled with gray and yellowish brown. The lower part is gray, friable sandy clay loam and sandy loam mottled with red and brownish yellow. Goldsboro soils are low in natural fertility and organic- matter content. They have moderate permeability, medi- um available water capacity, and low shrink-swell poten- ITS Appendices Table 8.01d (continued) Name Depth pH K Hydrology Plasti- --- Textural Classification------ ----- Group city USDA Unified AASHTO CROATAN 0-28 4.5 D NP MUCK PT 28-38 3.6-6.5 0.17 D NP-10 SI, FSL, MK-SL SM, Sc, SM-SC A-2, A-4 38-60 3.6-6.5 0.24 D 4-15 1., CL, SCL CL, CL-MI., SC, SMSC A-4, A-6 60-80 D NP Var CURRTTUCK 0-14 45-5.5 D NP MUCK, MPT PT A-8 14-28 3.6-5.5 D NP MUCK PT A-8 28-60 3.6-5.5 D NP IS, S SM, SPSM A-2, A-3 DARE 0-70 3.6-4.4 D NP MUCK PT 70-80 3.6-.0 0.15 D NP SR-FS-LS SM, SP-SM A-2, A-3 DAVIDSON 0-7 4545 0.28 B 3-15 L CL, CL-ML,ML A-4, A-6 0-7 4545 0.28 B 5-18 CL, SCL CL, SC, CL-ML, SM-SC A-6, A-4 7-12 4.5-60 032 B 11-25 CL CL A-6 12-53 4.5-60 0.24 B 12-33 C CL, CH, MI, ME A-7, A-6 53-72 4540 0.28 B 7-30 C, CL, SCL CL, MI, MH A-4, A-6, A-7 DELANCO 0-11 3.6-5.5 0.37 C NP-15 SIL, FSL ML, CL, SM. SC A-4, A-6 11-36 3.6-5.5 032 C 10-25 SICI, CL, L CL, ML A-6, A-7 36-50 3.6-5.5 0.28 C NP-15 SR-GRSL-SICL MI, CL, SM, SC A-2, A4, A-6 DELOSS 0-18 4.5-65 0.15 B/D NP-4 LFS SM A-2 0-18 4.545 014 B/D NP-7 SL, FSI, L SM, SM-SC,MI,, CL-ML A-2, A-4 18-56 4.5-5.5 0.24 B/D 4-22 SCI, CL, FSL SMSC,SC, CL MI CL A-4, A-6, A-7 56-80 B/D NP Var DOROVAN 0-3 3.64.4 D NP MPT,MUCK PT 3-74 3.64.4 D NP MUCK PT 74-99 45-5.5 D NP-7 S. IS, L SP-SK SMSC,SM A-I,A-3,A-4,A-2-4 DOTHAN 0-13 45-5.5 0.15 B NP LFS, IS SM A-2 0-13 4.5-5.5 0.24 B NP-5 FSL, SL SM, SMSC A-2, A-4 13-33 4.5-5.5 0.28 B NP-16 SCL, SL, FSL SMSC, Sc, SM A-2, A4, A-6 33-60 4.5-5.5 0.28 B 4-23 SCI, Sc SM-SC, CGML, CL A-2, A4, A-6, A-7 DRAGSTON 0-9 4.5-5.5 0.20 C NP-8 FSI, SL, L SM, Sc, SMSC, CL-ML A-2, A-4 0-9 4.5-5.5 0.17 C NP-7 LFS, IS SM, SMSC A-2 9-37 4.5-5.5 0.17 C NP-10 FSL, SI, L SM, SC, SMSC, CL-ML A-2, A-4 37-66 4.5-6.5 0.17 C NP-7 S. IS, FSL SM, SP-SM, SMSC A-1, A-2, A-3 DUCKSTON 0-72 3.6-8.4 0.10 A/D NP S, FS SP-SM,SP A-3 DUNBAR 0-8 45-5.5 032 D NP-7 SL, FSL, L SM, SMSC A-2, A-4 8-80 3.6-5.5 0.32 D I8-35 SC, CL, C CL, CH A-6, A-7 DUPLIN 0-8 5.1-7.3 0.24 C NP-7 SI, FSL, IS SM, SMSC A-2, A-4 8-80 45-5.5 0.28 C 13-35 SC, CL, C CL, CH, SC A-6, A-7 DURHAM 0-16 4.5-6.0 0.17 B NP-3 LCOS, LS SM A-2 0-16 4.5-6.0 0.24 B NP-7 SI, FSL SM, SMSC A-2, A-4 16-36 4.5-5.5 0.20 B 10-25 SCI, CL SC, CL A-2, A-6, A-7 36-42 45-5.5 0.20 B 13-28 CL, SC, SCL SC, CL A-6, A-7 4248 4.5-5.5 0.20 B NP-10 SCL, SL SM, SC, SMSC A-2, A4 48-60 4.5-5.5 0.17 B NP-7 IS, SL, SCL SM, SMSC A-2, A-4 EDNEYVILLE 0-10 4.5-6 0.24 B NP-7 FSL, SL SM, SMSC A-2, A-4 0-10 45-6.0 018 B NP-10 I, SEL ML, CL-MI CL A-4 10-60 45-6.0 0.20 B 6-15 FSI, SL, L SM, SM-SC A-2, A-4, A-6 'See Tables 8.01 b, 8.01 c and Figure 8.01d for definition of symbols. 8.01.19 Appendices U6 Table 8.01d (continued) Name Depth pH K Hydrology Plasti- ------Textural classification---- -- Group city USDA Unified AASHTO JOHNSTON 0-30 4.5-5.5 0.17 D 2-14 MK-L OL, ML, CL-ML A-8, AA, A-5 0-30 4.5-5.5 0.20 D NP-10 L, SL, FSL ML, SM A-2, A-4 30-34 45-5.5 0.17 D NP SR-SS SM, SP-SM A-2, A-3 34-60 45-5.5 0.17 D NP-10 SR-FSL-SL SM A-2, A4 KALIvIIA 0-14 4.5-6.0 0.15 B NP IS, LFS SM, SMSC, Sc A-2 0-14 4.5-6.0 0.20 B NP-10 SL, FSL SM, SMSC, SC A-2, A4 14-32 4.5-5.5 0.24 B 4-15 SCL SC, SMSC A-2, A4, AS 32-60 4.5-5.5 0.10 B NP is' s SM, SP-SM, SP A-2, A-3 KENANSVILLE 0-24 45-6.0 0.15 A NP IS, LFS SM, SPSM A-1, A-2 0-24 4.5-6.0 0.15 A NP FS, S SM, SPSM A-1, A-2 24-36 45-6.0 0.15 A NP-10 SL, FSL SM, SC, SM-SC A-2, A-4 36-80 45-6.0 0.10 A NP S. IS SP-SM, SM A-1, A-2, A-3 KERSHAW 0-80 4.5-6.0 0.10 A NP S, COS, FS SP, SP-SM, SW A-2, A-3 KINSTON 0-12 4540 0.24 B/D NP-10 FSL SM, SC, SM-SC A-2, A4 0-12 4540 0.37 B/D 4-15 L, SIL ML, CL, CL-ML A4, A-6 12-60 4.5-5.5 0.32 B/D 8-22 L, Cl, SCL CL A4, A-6, A-7 60-72 B/D NP Var KUREB 0-80 45-7.3 0.10 A NP S. COS, FS SP, SP-SM A-3 LAKELAND 043 45-60 0.10 A NP S, FS SPSM A-3, A-2-4 43-80 4.540 0.10 A NP S, FS SP, SP-SM A-3, A-2-4 LEAF 0-9 3.6-5.5 032 D 5-15 SIL, VFSL ML, CL A4, A-6 0-9 3.6-5.5 028 D 5-12 FSL, L ML A4, A-6 9-72 3.6-5.5 0.32 D 20-38 SICL, SIC, C CL, CH A-7 LEAKSVILLE 0-9 5.1-6.5 0.43 D 6-16 SIL, L. SICL ML, CL•ML A4, A-6 9-18 6.1-7.8 0.24 D 35-75 CL, C, SIC CH A-7 18-24 6.1-7.8 0.24 D 2045 CL, SICL CL, CH A-7 24-30 D WB 30 D UWB LENOIR 0-8 45-5.5 037 D 4-10 L, SIL, VFSL ML, CL, CL-ML A4 8-75 45-5.5 032 D 11-35 C, SIC, CL CL, CH A-6, A-7 LEON 0-15 3.6-5.5 0.10 B/D NP S. FS SP, SP-SM A-3, A-2-4 15-30 3.6-5.5 0.15 B/D NP S. FS, IS SM, SP-SM, SP A-3, A-24 30-80 3.6-5.5 0.10 B/D NP S, IS SP, SPSM A-3, A-24 LIDDELL 0-8 45-5.5 0.43 B/D 2-10 L, SIL, VFSL ML, CL-ML A4 8-65 45-5.5 0.43 B/D 2-10 L, SIL, VFSL ML, CI ML A4 LILLINGTON 0-16 4.540 0.15 B NP GR-LS, GR-SL GM, GP-GM, SM, SPSM A-1, A-2 16-44 4.5-5.5 0.15 B NP-10 GRSCI GR-CL GM, GC, SM. SC A-1, A-2, A-4 44-80 4.5-5.5 0.10 B NP SR-GRV-LS-GRVSCL GM, SM A-1, A-2 LOCKHART 0-6 5.1-6.5 0.15 B NP GR-LS, GR-SL GM, GP-GM, SM, SPSM A-1, A-2 6-54 5.1-6.5 0.17 B 5-15 GRSCL, GR-L GC, GM-GC,SC, SMSC A-2, A-4, A-6 54-72 B Var LOUISA 04 4.5-6.0 0.17 B NP GR-L, GRSL, GR-FSL SM A-1, A-2, A-4 04 4.5-60 0.28 B NP L, SL, FSL SM, ML A-2, A-4 4-15 45-6.0 0.24 B NP GR-L, GR-SL SM A-2, A-4 15-60 B WB LOUISBURG 0-7 4.5-6.0 0.10 B NP LS, LCOS SM A-2, A-1-13 0-7 4.5-6.0 0.24 B NP-6 SL, FSL SM, SMSC A-2 7-24 45-6.0 0.24 B NP-7 SL SM, SMSC A-2, A4 24-60 B WB 'See Tables 8.01b, 8.01c and Figure 8.01d for definition of symbols. 8.01.23 0 ts7 Table 8.01 d (continued) Name Depth pH K Hydrology Plasti- --- Textural Classification-- ----- Group city USDA Unified AASHTO LUCY 0-24 5.1-60 0.15 A NP is, S, LFS SM, SP-SM A-2 24-35 4.5-5.5 0.24 A NP-15 SL, FSL, SCL SM, SC, SMSC A-2, A-4, A-6 35-70 4.5-5.5 0.28 A 3-20 SL, SCI, CL SC, SMSC, SM A-2, A-6, A-4 LUMBEE 0-14 4.5-5.5 0.24 B/D NP-7 IS, SI, FSL SM, SM-SC A-2, A-4 14-36 4.5-5.5 0.32 B/D 7-25 SCI, SI, CL SC, CL A4, A4, A-7 36-60 4.5-5.5 0.10 B/D NP is, S, FS SP, SM, SPSM A-2, A-3 LYNCHBURG 0-10 3.6-5.5 0.15 C NP4 IS, LFS SM, SP-SM A-2 0-10 3.6-5.5 0.20 C NP-7 SL, FSL, L SM, ML, SM-SC, CL-ML A-2, A4 10-62 3.6-5.5 0.20 C 4-18 SCI, SI, CL SM-SC, SC, CL, CL-ML A-2, A4, A-6 LYNN HAVEN 0-16 3.6-5.5 0.10 B/D NP S, FS SP, SP-SM, SM A-3, A-2-4 16-30 3.6-5.5 0.15 B/D NP S, FS, IS SM, SP-SM A-3, A-24 30-75 3.6-5.5 0.10 B/D NP S, IS SP, SP-SM A-3, A-24 MADISON 0-6 45-60 0.24 B NP-8 FSL, SL SM, SM-SC A-2, A4 0-6 45-60 0.15 B NP-7 GR-FSL, GRSL SM, SM-SC A-2, A4 0-6 45-60 0.28 B 7-20 CL, SCL CL A-4, A4 6-30 45-5.5 0.32 B 12-43 C. CL, SC MH, ML A-7 30-35 4.5-60 0.28 B 7-20 L, SCI, CL CL A-4, A-6 35-66 B WB MANTACHIE 0-11 4.5-5.5 0.37 C NP-10 SIL MI, CL-ML, CL A4 0-11 45-5.5 0.28 C 5-15 CL CL-ML, CL A4, A4 0-11 4.5-5.5 0.28 C NP-5 FSL, SL, L CL-ML, SMSC, M A4 11-61 4.5-5.5 0.28 C 5-15 L. CL, SCL CL , SC, M-SC, CL-ML A-4, A4 MANTEO 0-6 3.6-5.5 028 CID 2-15 CN-SIL, CN-L GM, ML, CL, GC A4 0-6 3.6-5.5 0.28 CID 2-15 CN-VSII., CN-VL GM, ML, CL, GC A-1, A-2, A4, A-6 6-15 3.6-5.5 0.28 C/D 2-20 CN-VSII.,CN-SIL, N- L GM, GC, ML, CL A-1, A-2, A4, A-6 15 7 MARLBORO 0-9 5.145 0.15 B NP4 IS, LFS SM A-2 0-9 5.145 0.20 B NP-7 SL, FSI,, VFSL SM, SMSC, MI, CL-ML A-2, A4 940 4.540 0.20 B 6-20 SC, CL, C CL, ML, CL-ML A-4, A-6, A-7 60-72 4.5-6.0 0.20 B 6-20 SCI, SC, C CL, ML, SM, SC A-4, A4, A-7 MASADA 0-10 45-5.5 032 C NP-8 FSL, L ML, SM, SC, CL A4, A-6 10-55 45-5.5 0.24 C 20-35 CL, C, GR-C CH, CL A-7, A4 55-72 45-5.5 0.24 C 15-25 L, CL, GRSCL CL, ML A-6, A-7, A4 MATTAMUSKEET 0-22 4.5 D NP MUCK PT 22-72 3.6-5.5 D NP IS, S. FS SM, SPSM A-2, A-3 MAXTON 0-12 4.540 0.20 B NP-7 SI, FSL SM, SMSC A-2 0-12 4.5-60 0.15 B NP IS, LFS SM, SPSM A-2 12-33 4.5-5.5 0.24 B 4-15 SCL, SL SC, SMSC A-4, A4, A-2 33-60 4.5-5.5 0.10 B NP SR-LSS SM, SP-SM, SP A-2, A-3 MAYODAN 0-12 4.5-6.0 0.24 B NP-5 SI, FSL, SII. SM, MI., SMSC A-2, A4 0-12 4.540 0.15 B NP-4 GRSI, GR-FSL GP-GM,GM, SM, SPSM A-1 0-12 4.540 0.32 B 7-26 CL, SCL CL, SC A4, A4, A-7-6 12-18 4.540 0.32 B 7-26 SICL, CL, SCL CL, MI., SC A4, A4 A-7-6 18-47 4.5-5.5 0.28 B 1545 C. SC, SIC MH, CH, CL, ML , A-7 4740 45-5.5 B Var 1See Tables 8.01 b, 8.01c and Figure 8.01d for definition of symbols 8.01.24 13 IS-8 Table 8.01d (continued) Name Depth pH K Hydrology Piasti- Textural Classification Group city USDA Unified AASHTO NORFOLK 0-17 4.540 0.17 B NP-14 SI, FSL SM, SMSC, SC A-2 0-17 4.540 0.20 B NP is, LFS SM A-2 17-38 4.5-5.5 0.24 B 4-15 SL, SCI, CL SC, SMSC, CL, CL-ML A-2, A-4, A-6 38-70 4.5-5.5 0.24 B 4-23 SCL, SC, CL SC, SMSC, CL, CL-ML A-4, A-6, A-7-6 70-99 B Var OAKBORO 0-10 4545 028 C NP-10 SIL, L ML, CL-ML, CL A4, A-6 10-46 4545 028 C NP-15 L, SIL, SICL ML, CL-ML, CL A-4, A-6 46 C UWB OCHLOCKONEB 0-6 4.5-5.5 0.20 B NP-5 FSI, SL SM, ML, SM-SC, _ML CL A-4, A-2 0-6 45-5.5 0.24 B NP-7 A , CL C? 0-6 45-5.5 0.17 B NP IS, LFS SM A 2, A-4 6-44 45-5.5 0.20 B NP-9 FSI, SL, SIL SM, MI, SC, CL A-4 4472 45-5.5 0.17 B NP-9 is, SL, SIL SM, ML, CL, SC A4, A-2 OCRI A 0-28 45-5.5 0.10 C NP LS, LFS, S SM, SPSM A-2, A-3 28-67 45-5.5 0.24 C NP-18 SL, SCL SM, CL, SC A-2, A-4, A-6 OLUSTEB 0-8 3.6-5.5 0.10 B/D NP S, FS SP-SM, SM A-3, A-2-4 8-21 3.6-5.5 0.15 B/D NP S, FS SP-SK SM A-3, A-2-4 21-35 45-5.5 0.10 B/D NP S, FS SP-SK SM A-3, A-2-4 35-62 45-5.5 0.24 B/D 8-15 SCI, SL SC A-2, A-4, A-6 62-74 45-5.5 0.28 B/D 15-25 SC SC, CL A-6, A-7 ONSLOW 0-17 3.6-5.5 0.17 B NP LFS, LS SM, SPSM A-2, A-3, A4 0-17 3.6-5.5 0.20 B NP-10 FSI, SL SM, MI., SC, CL A-2, A4 17-53 3.6-5.5 0.24 B NP-14 SCI, SL, CL SM, CL, SMSC, SC A-2, A4, A-6 53-80 B Var ORANGE 0-10 5.145 0.49 D NP-10 SIL, L SM. ML, CL-ML, SMSC A-4 0-10 5.145 0.32 D NP-7 FSL, SL SM, ML, CL-ML, SMSC A-4 10.38 5.145 0.28 D 45-70 C. SIC, SICL CH A-7 38-58 5.6-7.8 0.28 D 10-25 SIL, CNVSII., SCL SC, CL, GC A-6, A-7 58 D UWB ORANGEBURG 0-7 4.540 0.10 B NP LS, LFS, S SM A-2 0-7 4540 0.20 B NP SL, FSL SM A-2 0-7 4.540 0.24 B 3-16 SCL SM, SMSC, SC A4, A-6 7-12 4.540 0.20 B NP4 SL SM A-2 12-54 45-5.5 0.24 B 3-19 SCI, SL SC, CL, SM, SMSC A-6, AA 54-64 4.5-5.5 0.24 B 8-21 SCI, SC, SL SC, CL A-6, AA. A-7 OSIER 0-8 3.6-6.0 0.10 A/D NP S, LS, FS SPSM A-2, A-3 0-8 3.6-60 0.15 A/D NP FSL, LM SM A-2 8-48 3.6-60 0.10 A/D NP S, LS, LFS SP-SK SM A-2, A-3 48-75 3.6-6.0 0.05 A/D NP COS, S, FS SP, SPSM A-1, A-3, A-24 OTEEN 0-6 5.1-7.3 0.24 C NP-7 FSI, SL,L ML, CL-ML, SMSC,SM A-2, A-4 0-6 5.1-7.3 0.17 C NP-7 GR-FSL, GR-I, GRSL SM, SMSC A-2, A-4, A-1 17? 5.1-7.3 0.32 C 11-30 C CL A-6, A-7 WE PACOLET 0-3 4545 0.20 B NP-7 SL, FSL, L SM, SM-SC A-2, A-1 -B 0-3 4.545 0.24 B 4-17 Cl, SCL SMSC, SC A-4, A-6 0-3 4.5-6.5 0.15 B NP-3 LS SM A-2 3-29 4540 028 B 11-30 SC, CL, C ML, MH AS, A-7 29-52 4.540 0.28 B 5-15 CL, SCI, SL CL, CL-ML, SMSC, SC A-2, A-4, A-6 52-70 4540 0.28 B NP-6 SL, FSL, L SM, SMSC A4, A-24 'See Tables 8.01 b, 8.01c and Figure 8.01d for definition of symbols. 8.01.26 0 161? Table 8.01d (continued) Name Depth pH K Hydrology Plasti- --- Textural Classification' Group city USDA Unified AASHTO PORTERS 0-7 4.5 0.24 B NP-10 FSI SL SM, SMSC A-2, A-4 0-7 4.5-6.0 028 B NP-10 L, SIL ML, CL, CL-ML A4 742 4.5-6.0 0.24 B NP-7 L, SI, FSL SM, SMSC A-2, A4 42-60 B UWB PORTSMOUTH 0-19 3.6-5.5 0.24 B/D NP-7 SL, FSL, L SM, SM-SC, ML A-2, A4 19-35 3.6-5.5 028 B/D 7-18 L, SCI, CL SC, CL-ML, CL A4, A-6 35-38 3.6-5.5 0.17 B/D NP4 LS, SL SM A-2 38-72 1.6-6.0 0.17 B/D NP SR-COS-LS SP-SM, SP, SM A-1, A-2, A-3 PUNGO 0-72 45 D NP MUCK PT 72-84 3.6-7.3 0.24 D 15-35 C. SIC, SC CH, CL, SC A-7, A-6 RABUN 0-9 5.1-6.5 0.32 B 3-20 L, CL, SIL MI., CL, SM, SC A-6, A-7, A-4 0-9 5.1-6.5 0.20 B 3-12 GR-L, GR-CL SM, SC, SMSC A-6, A4 9-37 5.1-65 0.28 B 12-30 CL, C, SIC ML, CL, MH, CH A-7 37-48 5.1-6.5 018 B 11-23 C. CL, SICL ML, CL A-7, A-6 48-62 B WB RAINS 0-12 4.545 0.10 B/D NP S, FS SPSM A-3, A-2-4 12-62 4.5-5.5 0.24 B/D 8-18 SCL SC A-2-6, A-2-4 62-85 45.5 020 B/D NP-7 IS, LFS, SL SM, SMSC A-24 RAMSEY 0-5 45-5.5 024 D NP-7 L, SL, FSL SM, CL-ML, ML, SMSC A-4, A-2 5-18 45-5.5 0.17 D NP-7 L, SL, FSL SM. CL-ML, ML, SMSC A4, A-2 18 D UWB RANGER 0-6 4.5-5.5 0.24 C 2-8 CNSIL ML, CL-ML, CL A-4 ? 6-26 4.5-5.5 024 C 2-10 CNSH., CNSICL, CNVSIL GM, GC, GM-GC A4, A-2 RIDGELAND 0-8 3.645 0.10 B/D NP S, FS, LFS SP-SK SM A-2, A-3 8-15 3.645 0.15 B/D NP S. FS, LFS SP-SK SP, SM A-2, A-3 15-35 3.6-6.5 0.15 B/D NP S. FS, LFS SP-SK SP, SM A-2, A-3 35-80 3.645 0.15 B/D NP S. FS, LFS SPSM, SP, SM A-2, A-3 RIMM 0-58 3.640 0.10 A NP S, FS SP, SPSM A-3 58-70 3.640 0.10 A NP S, FS SP, SP-SM A-3 70-80 3.640 0.10 A NP S, FS SP, SP-SM A-3 ROANOKE 0-7 3.6-5.5 028 D NP-7 FSL SM. ML, CL-ML, 0-7 3.6-5.5 037 D 5-16 SII, L SMSC SMSC, CL-ML, A-2, A-4 CL, SC A4, A-6 0-7 3.6-5.5 0.37 D 14-20 SICL, CL CL A-6, A-7 7-12 3.6-5.5 0.24 D 14-20 CL, SICL CL A-6, A-7 12-50 3.6-5.5 0.24 D 2240 C, SIC, CL CH, CL A-7 50-72 3.645 0.24 D NP-40 SRSC-c CL-ML, GM-GC, CH, ML A-2, A-4, A-6, A-7 ROPER 0-15 3.6-5.5 B/D NP MUCK PT 15-42 3.6-5.5 0.43 B/D 8-25 SH, SICL, L CL A-4, A-6 42-55 5.6-7.8 0.43 B/D 8-25 S11,, SICL, L CL A-4 A-6 55-72 5.6-7.8 B/D VAT , ROSMAN 0-50 5.145 024 B 4-15 L, FSL, SIL ML, CL-ML A-4 50-60 5.1-6.5 0.10 B NP-7 SR-GRS-GR-C SM, ML, CL-ML, SMSC A-4 RUMFORD 0-17 3.6-5.5 0.17 B NP LFS, LS SM A-2 A-1 0-17 3.6-5.5 0.24 B NP-6 FSL, SL SM, SMSC , A-2, A4 17-37 3.6-6.0 0.17 B NP-12 FSL, SL, SCL SM, SC, SMSC A-2, A4 A-6 37-60 3.6-6.5 0.17 B NP-6 SR-SL-GRS SM. SP, GP, GM , A-1, A-2, A-3, A-4 'See Tables 8.01 b , 8.01c and Figure 8.01d for definition of symbols. 8.01.28 16b Appendices Table 8.01d (continued) Name Depth pH K Hydrology Plasti- -------- Textural Classifications--- ---- Group city USDA Unified AASHTO TUSQUITEE 0-10 4.540 0.24 B NP-7 FSL, SL SM, SMSC A-2, A-4 0-10 45-6.0 0.28 B NP-7 L, SIL ML, CL-ML, CL, SM A4, A-5 1048 4.5-6.0 0.20 B 6-15 L, SL, FSL SMSC, SM A4 48-60 4540 0.20 B NP-7 GR-SL, GR-FSL GM, SM-SC, SM, GM-GC A4, A-1, A-2 UNISON 0-9 4.540 0.32 B 2-15 L, SH.., FSL CL, ML, CL-ML, SM A4, Al 9-50 4.5-6.0 0.24 B 15-35 CL, C, GR-SIC CL, CH A1, A-7 50-72 4540 0.28 B 5-20 CB-CL, SICL, GRV-L CL-ML, CL, ML, GM-GC A-1, A-2, A-6, A-7 VALHALLA 0-21 451.0 0.15 A NP LFS, IS SM A-2 0-21 45-60 0.15 A NP FS, S SM, SP-SM, SP A-2, A-3 21-30 4.540 0.24 A NP-10 FSL, SL, SCL SM, Sc. SMSC A-2, A4 30-99 43-60 0.15 A NP FS, S SM, SPSM A-2, A-3 VANCE 0-5 4540 024 C NP-7 FSL, SL, COSL SM, SMSC A-2, A-4 0-5 4540 0.15 C NP-7 GRSI GR-COSL SM. GM, GM-GC A-1, A-2, A4 0-5 4540 0.28 C 8-20 SCL, CL CL, SC A1, A-4 5-29 45-5.5 037 C 2548 CL, SC, C CH A-7 29-72 C WB VARINA 0-14 4545 0.15 C NP-3 LS SM, SPSM A-2 0-14 4545 0.17 C NP-7 SL SM, SMSC A-2, A-4 14-38 45-5.5 0.28 C 11-25 SC, CL, C SC, MH, ML, SM A1, A-7 38-80 4.5-5.5 0.28 C 8-26 SC, CL, C SC, CL, CH A-4, A-6, A-7 VAUCLUSE 0-15 4.540 0.15 C NP IS, S, LCOS SM, SPSM A-2, A-3 0-15 4540 0.24 C NP-7 FSL, SL SM. SMSC A-2, A4 0-15 4540 0.32 C NP-7 SCL SM. CL ML, ML SMSC A-4 15-29 3.6-5.5 014 C 5-18 SCI, SL Sc, SMSC A-2, A4, Al 29-58 3.6-5.5 0.24 C NP-20 SCL, SL, SC Sc, SMSC, SM A-2, A4, Al 58-72 3.6-5.5 0.17 C NP-12 SL, SCI, IS SM, SC, SMSC A-2, A4, Al WAGRAM 0-24 4540 0.15 A NP IS, LFS SM, SPSM A-2, A-3 0-24 4540 0.10 A NP FS, S SP-SK SM A-1, A-2, A-3 24-75 4.540 0.20 A 8-25 SCL, SL SC A-2, A4, A1, A-7 WAHEE 0-11 4540 0.24 D NP-7 SL, FSL SM, SMSC A-2, A-4 0-11 4.540 0.28 D 2-10 L, SIL, VFSL ML, CL-ML, CL A-4 11-56 3.6-5.5 0.28 D 18-42 C, CL, SIC CL, CH A1, A-7 5615 3.6-5.5 0.28 D Var WAKE 0-15 4540 0.20 D NP GR-LCOS, GR-LS, IS SP-SK SM. GM, GP-GM A-2, A-3, A-1 WAKULLA 0-24 4540 0.10 A NP IS, LFS SM. SPSM A-2, A-3 0-24 4.5-60 0.10 A NP S, FS SP, SPSM A-3 24-42 4.540 0.10 A NP IS, LFS SM, SPSM A-2 42-80 4.540 0.10 A NP S, FS SM. SPSM A-2, A-3 WANDO 0-8 5.6-7.3 0.10 A NP LFS, IS SP-SK SM A-2, A-3 8-99 5.6-7.3 0.10 A NP S. FS SP, SP-SM, SM A-2, A-3 WASDA 0-14 3.6-5.5 B/D NP MUCK PT 14-42 45-5.5 0.20 B/D NP-10 CL, SCI, SL ML, CL, CL-ML A4 42-60 5.6-7.8 0.24 B/D NP-7 SL, L ML, SM, CL-ML, SM-SC A-4 60-74 5.6-7.8 0.15 B/D S SP-SK SM A-2, A-3 WEEKSVILLE 0-42 4.5-5.5 0.43 B/D NP-7 SIL, VFSL, L CL-ML, ML A4 42-56 4.5-5.5 0.43 B/D NP-3 FSL, SL SM A-2, A4 56-72 4.5-5.5 0.32 B/D NP S, LS, LFS SM, SP-SM A-2 'See Tables 8.01 b, 8.01c and Figure 8.01d for definition of symbols. 8.01.31 n 161 ly to require blasting or special equipment beyond what is considered normal in".' this type of construction. Bedrock at shallow depths limits plant growth by restricting root penetration. There is frequently a correlation between bedrock depth and water holding capacity. Soil Reaction, (pH) Soil reaction represents the degree of acidity or alkalinity of a soil, expressed as pH. The pH in soils is directly related to parent material. The principal value of soil pH measurement is the knowledge it gives about associated soil charac- teristics, such as phosphorus availability or base saturation. A pH of ap- proximately 6 to 7 indicates readily available plant nutrients. Leaching removes bases, causing a pH decline. Therefore, the amount of rain- fall, rate of percolation, return movement of moisture by capillary action and evaporation affect pH. The pH is higher in soils of and regions than in humid regions, higher in younger soils than older soils, higher on steep slopes than on flat topography, and higher under prairie than under timber. Soil reaction is also used as an indicator of corrosivity or dispersivity. In general, soils that are either very alkaline or very acid are likely to be highly corrosive to steel. Soils that are acid are likely to be corrosive to concrete. The range of pH for soils commonly found in North Carolina is given in Table 8.01d. Seasonal High Water A seasonal high water table is a zone of saturation at the highest average depth Table during the wettest season of the year. It is at least 6 inches thick, persists in the soil for more than a few weeks, and is within 6 ft of the soil surface. Soils that have a seasonal high water table are classified according to depth to the water table, kind of water table, and time of year when the water table is highest. Depth and duration of high water may limit soils for uses such as septic tank absorp- tion fields, roadfill, and topsoil. A water table near the surface during the grow- ing season is detrimental to many plants and must be considered in vegetation plans. Hydrologic Group Hydrologic group identifies soils as having the same runoff potential under similar storm and cover conditions. Soil properties that determine the hydrologic groups include the following: seasonal high water table, water intake rate and permeability after prolonged wetting, and depth to the slowly permeable layer. The influence of ground cover is not considered. The soils in theu.S, and Carib- bean area are placed into four groups (A, B, C, and D) and three dual classes (A/D, B/D, C/D). In the definition of classes, infiltration rate is the rate at which water enters the soil at the surface, controlled by surface conditions. Transmis- sion rate is the rate water moves in the soil, controlled by the permeability of deeper horizons. The hydrologic group for soils commonly found in North Carolina is given in Table 8.01d. Definitions of the groups are listed below. • Group A (low runoff potential}-Soils having high infiltration rates even when thoroughly wetted, consisting chiefly of deep, well-drained to ex- 8.01.8 t6a Appendices cessively drained sands or gravels. These soils have a high rate of water transmission. • Group B-Soils having moderate infiltration rates when thoroughly wetted, consisting chiefly of moderately deep to deep, moderately well- drained to well-drained soils with moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission. • Group C-Soils having slow infiltration rates when thoroughly wetted. Group C soils often have a layer that impedes downward movement of water or may consist of moderately fine to fine-textured particles. These soils have a slow rate of water transmission. Group D (high runoffpotential)-Soils having very slow infiltration rates when thoroughly wetted, consisting chiefly of clay soils with high swell- ing potential. These soils frequently have a permanent high water table or a claypan or clay layer at or near the surface. Other soils in this group con- sist of shallow soils over nearly impervious material. These soils have a very slow rate of water transmission. Dual hydrologic groups, AM, B/D, and C/D, are indicated for certain wet soils that can be drained The first letter applies to the drained condi- tion, the second to the undrained condition. Only soils that are rated D in their natural condition are assigned to a group. Engineering Soils are classified according to engineering properties by two classification Classification systems in the soil survey: (1) the AASHTO system and (2) the Unwed Soil Classification System. Engineering classification for soils commonly found in North Carolina is given in Table 8.01d. AASHTO System The AASHTO system classifies soils according to the properties that affect roadway construction and maintenance. The fraction of a mineral soil that is less than 3 inches in diameter is classified in one of seven groups from A-1 through A-7 on thebasis ofgrain-size distribution, liquid limit, and plasticity index. Soils in group A-1 are coarse grained and low in silt and clay. Soils in group A-7 are fine grained Highly organic soils in Group A-8 are classified on the basis of visual inspection. The AASHTO classification system is summarized in Table 8.01b. Unified System The Unified System classifies soils according to suitability for construction material: grain-size distribution, plasticity index, liquid limit, and organic mat- ter content. This classification is based on that portion of soil having particles smaller than 3 inches in diameter. Classes include coarse-grained soils (GW, GP, GM, GC, SW, SP, SM, SC), fine-grained soils (ML, CL, OL, MH, CH, OH), and highly organic soils (PT). Borderline soils require a dual classifica- tion symbol. Table 8.01c provides classification descriptions for each class in the Unified System. 8.01.9 163 Appendices Table 8.03e Runoff curve numbers of urban areas' Curve number for Cover Description hydrologic soil group Cover type and hydrologic condition Average percent A B C D impervious areal Fully developed urban areas (vegetation established) Open space (lawns, parks, golf courses, cemeteries, etc.) 3: Poor condition (grass cover < 50%) ............................. 68 79 86 89 Fair condition (grass cover 50% to 75%) ..................... 49 69 79 84 P06+ Good condition (grass cover > 75%) ............................ 39 61 74 80 Impervious areas: Paved parking lots, roofs, driveways, etc. (excluding right-of-way) ............................................... 98 98 98 98 Streets and roads: &I 44 Paved; curbs and storm sewers (excluding right-of-way) .................................................................. 98 98 98 98 Paved; open ditches (including right-of-way) ................ 83 89 92 93 Gravel (including right-of-way) ...................................... 76 85 89 91 Dirt (including right-of-way) ........................................... 72 82 87 89 Urban districts: Commercial and business ................................................. 85 89 92 94 95 Industrial ........................................................................... 72 81 88 91 93 Residential districts by average lot size: 1/8 acre or less (town houses) ......................................... 65 77 85 90 92 1 /4 acre ............................................................................ 38 61 75 83 87 1 /3 acre ............................................................................. 30 57 72 81 86 1 /2 acre ............................................................................. 25 54 70 80 85 1 acre ............................................................................... 20 51 68 79 84 2 acres .............................................................................. 12 46 65 77 82 Developing urban areas Newly graded areas (pervious areas only, no vegetation) • 77 86 91 94 Idle lands (CN's are determined using cover types similar to those in table 2-2c). 1. Average runoff condition, and la = 0.2S. 2. The average percent impervious area shown was used to develop the composite CN's. Other assumptions are as follows: impervious areas are directly connected to the drainage system, impervious areas have a CN of 98, and pervious areas are considered equivalent to open space in good hydrologic condition. CN's for other combinations of conditions may be computed using Figure 8.03c or 8.03d. 3. CN's shown are equivalent to those of pasture. Composite CN's may be computed for other combinations of open space cover type. 4. Composite CN's to use for the design of temporary measures during grading and construction should be computed using Figure 8.03c or 8.03d based on the degree of development (impervious area percentage) and the CN's for the newly graded pervious areas. Rev. 6/06 8.03.17 1C4 0 Table 8.03f Runoff curve numbers for cultivated agriculture lands' Curve numbers for Cover description hydrologic soil groups Hydrologic Cover type Treatments2 conditions' A B C D Fallow Bare soil 77 86 91 94 pre- Row crops Straight row -? Good 67 78 85 89 Contoured & Good 62 71 78 81 terraced 1 Average runoff condition, and [.=0.2S 2 Crop residue cover applies only if residue is on at least 5% of the surface throughout the year. 3 Hydraulic condition is based on combination factors that affect infiltration and runoff, including (a) density and canopy of vegetative areas, (b) amount of year-round cover, (c) amount of grass or dose-seeded legumes, (d) percent of residue cover on the land surface (good Z 20%), and (e) degree of surface roughness. Poor. Factors impair infiltration and tend to increase runoff. Good: Factors encourage average and better than average infiltration and tend to decrease runoff. 8.03.18 Rev. 6/06 16S Appendices Pre- --> Table 8.039 Runoff curve numbers for other agriculture lands' Curve numbers for Cover description hydrologic soil groups Hydrologic Cover type conditions3 A B C D Pasture, grassland, or range- Poor 68 79 86 89 continuous forage for grazing. 2 Fair 49 69 79 84 Good 39 61 74 80 Meadow--continuous grass, protected - 30 58 71 78 from grazing and generally mowed for hay. Brush-brush-weed-grass mixture with Poor 48 67 77 83 brush the major element. 3 Fair 35 56 70 77 Good 304 48 65 73 Wood"rass combination (orchard or Poor 57 73 82 86 tree farm). 5 Fair 43 65 76 82 Good 32 58 72 79 Woods.6 Poor 45 66 77 83 Fair 36 60 73 79 Good 304 55 70 77 Farmsteads-buildings, lanes, - 59 74 82 86 driveways, and surrounding lots. 1 Average runoff condition, and la= 0.2S. 2 Poor. <50% ground cover or heavily grazed with no mulch. 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