20030728 Ver 1_COMPLETE FILE_20030616

~RMANENT BERM SEEDING SCHEDULE TEMPORARY BERM SEEDING SCHEDULE BERM SEEDBED PREPARATION ofeservfceaannd ae such remain a 10 (MIN.) the propperty of the englneer,
_ No cop(ee or reproductions of TOP OF BERM ELEV. - 448.25
SEEDING DATE SEEDING MIXTURE APPLICATION RATE SEEDING DATE SEEDING MIXTURE APPLICATION RATE 1.) CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES DEEP OVER ADVERSE SOIL CONDITIONS, R AVAILABLE, these drawings are permitted
AUG 25 -OCT. (BEST) K31 TAU. FESCUE 200 LBS/AC JAN 1 -MAY 1 RYE (GRAIN) 120 LBS/AC 100 YEAR WSE = 447.98 without consent of the engineer. 10 YEAR WSE = 447.57 a~l dr win elgexce tf thee contract 9l P
FEB. -APR 15 (POSSIBLE) KOBE LESPEDEZA 50 LBS AC 2.) RIP THE ENTIRE AREA TO S INCHES DEPTH. EMERGENCY SP / 3. REMOVE ALL LOSE ROCK, ROOrs, AND OTHER OBSTRUCTIONS LEAVING SURFACE TOP OF RISER ELEV. = 447.00 EMERGENCY SPILLWAY ELEV. = 447.5 copiea~ are to be roturned to D - - - the engineer.
MAY i - AUG 13 GERMAN MILLET 40 LBS AC ) REASONABLY SMOOTH ANO UNIFORM. 1 YEAR WSE =446,51 SOIL AMENDMENTS / Copyright © 2003
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 4000 lB/ACRE AUG 15 -DEC 30 RYE (GRAIN) 120 LBS/AC 4.) APPLY AGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE UNIFORMLY AND Mix WITH OUTLET STRUCTURE NCDOT STD. 838.01
GROUND AGRICULTURAL LIMESTONE AND 1000 l8/ACRE 10-1D-10 FERTILIZER. SOIL (SEE BELOW+). BERM ENDWALL (SEE DETAIL) SEE DETAIL SECTION
MULCH SOIL AMENDMENTS 5.) CONTINUE TILLAGE UNTiI AWELL-PULVERIZED, FlRM REASONABLY UNIFORM SEEDBED IS APPLY 4000 LB/AC STRAW. ANCHOR STRAW BY TACKNG WITH ASPHALT, NETTING, OR A FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 LB/AC GROUND PREPARED 4 TO 6 INCHES DEEP.
MULCH ANCHORING TOOL A DISK WITH BLADES SET NEARLY STRWGHi CAN BE USED AS AGRICUWRE LIMESTONE AND 750 LB/AC 10-10-10 FERTILIZER (FROM AUG 15 - A MULCH ANCHORING TOOL DEC 30, INCREASE 10-10-10 FERTILIZER TO 1000 LB/AG). 8.) SEED ON A FRESHLY PREPARED SEEDBED AND COVER NON-WOVEN GEOTEXTILE FABRIC SHALL BARREL
WATER TIGHT ~ WATER TIGHT GASKET SEAL BE PLACED AROUND EACH JOINT OF INV. OUT = 442.38
MAINTENANCE MULCH 7.) MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH, INSPECT AND REPNR MULCH FREQUENTLY. REFERTiLIZE IN LATE WINTER OF THE APPLY 4000 lB/AC STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING, OR " RCP BARREL ?N 2' WIDE STRIPS
FOLLOWING YEAR; USE SOIL TESTS OR APPLY 150 LB/ACRE 10-10-10. MOW 8.) INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WTTHM 4 LF - 1.5 REGULARLY TO A HEIGHT OF 2-4 INCHES, A MULCH ANCHORING TOOL A DISK WITH BLADES SEf NEARLY STRAIGHT CAN BE USED THE PLANTING SEASON, IF POSSIBLE. IF STAND SHOULD BE OVER SOX DAMAGED, 4 LF - 1.5" DIA. PVC CENTERED ON JOINT.
AS A MULCH ANCHORING TOOL REESTABLISH FOLLOWING ORIGINAL LIME, F-RTIUZER AND SEEaNG RATES. SEED LIGHTLY BARREL NCDOT CLASS 'B' RIP-RAP
NURSE PLANTS MIAINTENATJCF WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING. 45' ELBO INV. IN = 443.00 28 Lxi 4 Wx18"THICK ~
BETWEEN MAY 1 MID AUG. 15, ADD 15 LB/ACRE SUDANGRASS OR 10 LB/ACRE GERMAN JAN 1 - AUG 15; REFERRLIZE IF CROWM IS NOT FULLY ADEQUATE. RESEED, g, CONSULT CONSERVATION INSPECTOR ON MNNTENANCE TREATMENT AND FERTIUZARON 1 LF - 1.5" DU MILLET. BEFORE MAY 1 OR AFTER AUG. 15 ADD 40 LB ACRE RYE GRNN . REFERRUZE, AND MULCH IMMEDIATELY FOLLOWING EROSION OR ~ AFTER PERMANENT COVER IS ESTABLISHED. 1 LF - 1.5" DIA. PVC ~ 62 LF - 15" 0-RING RCP ®1.OOX (CL. III RCP) ~
' / ( ) POND INV, ELEV, = 443.00 443.00 mss.
AUG 15 -DEC 3DREPAIR AND REFERTIUZE DAAIAGm AREAS IMMEDIATELY. TOP DRESS ~ WI1H 50 LB/AC OF NITROGEN IN MARCH. IF R IS NECESSARY TO • ~ I ~
ExTEND TEMPORARY COVER BEYOND JUNE 1S, OVERSEED WITH 60 a MICRO POOL ELEV. = 440.00 ti 1 1 a I
LB/AC KOBE LESPEDEZA IN LATE FEBRUARY OR EARLY MARCH. See seasonal applicotion schedule 1
o CONCRETE ANTI-FLOU uane tewart RETE ANTI-FLOTATION BLOCK ANTI-SEEP COLLAR (X2) SEEP COLLARS TO
~i ACCESS GATE N R ON (SEE OUTLET STRUCTI <i ~ (CE TE ED OUTLET STRUCTURE DETAIL) WATERTIGHT SEAL TO BE PROVIDED AT BE SPACED AT 20.67' O.C. (SEE DETAIL). & ASSOCIATES, 1~IC.
Mo~ ~ MANHOLE STEPS) END OF NOTES: T y elan ~e tNatarm ox PWII " • ACCESS GATE SHALL OVERLAP RISER BARREL INTERFACE COLLAR SHALL BE PLACED A MINIMUM OF 2 ~ FEET FROM PIPE JOINTS. CONSULTING ENGINEERS
m~~i " s eeu xo P PtPe ° i"/ _ ON TOP OF 6.3' DIA. REBAR 1.BASIN IS TO USED AS A SEDIMENT BASIN FOR EROSION CONTROL IOSION CONTROL. BASIN IS TO BE
~°n ~ ro PM.E or tvu i~~ ~ 4.1 DIA. REBAR RING RING CLEANED OF SEDIMENT AN TABILIZ IMME LATELY AFT R APPROV < D S ED D E f AFTER APPROVAL HAS BEEN GIVEN TO KEY TRENCH (SEE BERM MIN.
?M ~ ° n~ i~W REMOVE THE SEDIMENT BASIN, 8" ~ ~ -T ~ ~ ~ ~ ~a rn~ SOIL AND COMPACTION
i ' ' _ _ - ~ ' _ _ e s 3.2 RAD. <M ~ ~ P° K• a, ~a ~M 2. INTERIOR OF BASIN AND ENTIRE BERM TO BE COVERED WITH 2- SPECIFICATIONS Civil Sanitary • Environmental " ) Planning • Design ~ Survey DVERED WITH 2-3 LAYER OF TOPSOIL
~ ~ ~ _ ~ ~ _ ~ PRIOR TO SEEDING. SEE PERMANENT AND TEMPORARY BERM SEED ARY BERM SEEDING SCHEDULE AND BERM
SEEDBED PREPARATION. REMAINDER OF BASIN INTERIOR (EXCLUDIN A ~ WITH A WET MEADOW SEED MIXTURE (120 Ib./ACRE). BASIN TO R! :RIOR (EXCLUDING BERM) TO BE COVERED BASIN TO REMAIN UNMOWN AFTER N.T.S.
PLAN a 1Y" SEEDING. Poottxe 3715 University Drive Durham, N.C. 27707
C UP carer. aolNr to ueEOl DOWEL" ~ [phone]
N~~ m s e e END ELEVATION x P N T T TR T R N o o:~ O D OU LE S UC U E OTES. LL fax [phone] e-mail: info0dksa-tsi.com
~ ~ 6.3 DIA. REBAR RING = m ~ P ~ ~ H FABRICATED HINGE 1. 15" RCP OUTLET BARREL SHALL BE CLASS III RCP MEETING THE ~ ~ = WAEU tN ExaeALL ettx AE]NP°AC[D aNa,En to ~ ~ OO JOINTS SHALL BE CONFINED 0-RING RUBBER GASKET JOINTS MEET CP MEETING THE REQUIREMENTS OF ASTM C76. THE PIPE www.dksa-tsi.com
C ~ N PIPE etM°LE PIn 00UL! PIPo ~ W .ET JOINT'S MEETING ASTM C-443 AND ASTM C-361.
r = 1 ( II I I II I I I otA, +a^ +e^ e~^ ao^ ae^ +e^ w• +a^ +e^ a• eo^ ae" w^ b^ ~ HATCH DETAIL , • m ~ ( I ~ ~ ~ euro "z^ ^z• ^x" ^x^ ^x" ^x• r• ^x^ r ^z" ^z^ ^x^ ^z^ "x^ "x^ r• "x" r• J W to 2. THE MANHOLE OUTLET RISER SHALL BE 4 I.D., MEETING ASTM MEETING ASTM C-478R dt, AASHTO M-199 MONOLITHIC 2.33' MIN. PROJECTION
9 o _ a m. a E a a x~ a E e a a e e a ,JM N BASE. THE MANHOLE JOINTS SHAH. BE ASTM C-443 RUBBER GF p,, M~ Ay a Olr. s s , 1 e 4 s e 1 a s d ' 443 RUBBER GASKET JOINTS. MANHOLE JOINTS SHALL BE 6"
m ~ r ° ~ ooeE~ ° mr, : E a a e a e s E a a e ° ~ 6.3 DIA. REBAR RING SECURELY ANCHORED TOGETHER TO PREVENT SEPARATION. CONT m o roru ue, a a u u a ee +E +e ra n n F = J ~ 4.1' DIA. REBAR RING THE MANHOLE SECTION ANCHORING SYSTEM. ARATION. CONTRACTOR IS RESPONSIBLE FOR DESIGN OF 1•IQTES; SEAL
O O ~ oPrtaw. ooxerN°c,toN ,rotxr ~ W m , g C ~ " oterertoNe coxoae,E auvmnEe ~ 3. OUTLET STRUCTURES SHALL BE PROVIDED WITH STEPS 1'-2" OI 1• CONCRETE FOR COLLARS SHALL BE 3000 PSI MIN. 28 DAY ~ • ( ) STRENGTH .
r ~ ELEVATION UIMe aoxcNEre RPE STEPS 1'-2" ON CENTER. STEPS SHALL BE IN ,Iona, " ~11d /j4,
y ~ M ~ axea, oteoela,e etxeu Pt oaee.E Pne ~ " " " ACCORDANCE WITH NCDOT STD. 840.66. x ~ _ ~ o x s e T ° ~ ,w r I ro• $ ~ p ~ 6.3 LF 2x2 x1/4 ANGLE 0.5 2. COLLARS SHALL BE CONNECTED TO 15 RCP WITH A WATER ' ~~.1 CARD /p~ TIGHT JOINT. ~
~ rn ~ a'•a^ E'•e" a4^ d!^ e'•e^ a,r a'•e^ v.e" ,,o w z ~ ~ 4, CONCRETE ANTI-FLOTATION BLOCK SHALL BE INTEGRALLY ATTACI r" ,e" a'a" +'•,s^ a'•s• stY w" e'-~^ s'•r^ e'•n" ,.a O ' p ~ ~ n fEGRALLY ATTACHED TO RISER BASE TO PREVENT ; r` ~ ~,~FE /
m ae^ r•e^ a'•," a•o^ a^ ro^ r.o^ +.e a'.e^ ,+'•e^ a.a r, O 5' RISER/BLOCK SEPERATION, OR PRECAST AS THE EXTENDED BASE ao" e'.o^ e'•e^ ~'a^ ate" ,+k e'•e• e.a a.a" ,a'•e^ a., ELEV. = 290.00 THE CONCRETE ANTI-FLOTATION BLOCK IS CAST SEPERATE FROM T (TENDED BASE OF THE MANHOLE DURING FABRICATION. IF 3• COLLAR SHALL BE SPACED ALONG BARREL AT 20.67 O.C. 15" DIA. 15" DIA. RCP 00 ~ : ~ ;PERAIE FROM THE MANHOLE ASSEMBLY THE CONTRACTOR ~~.;.r.: 0-RING RCP : Q
ae• e'.e^ r•e" e'.e• 4 ^ +,tit^ ++'•o^ a.~ e'•o^ +e'.o" ~,e (TOP OF RISER) , SHALL 8E RESPONSIBLE FOR ANCHORING THE ANTI-FLOTATION BLOT es" e'•E^ s'•r e'•e^ e,1" nst"+s'•e^ ~.e s'•,o"+e'•e^ e.o 0.5 -FLOTATION BLOCK TO THE MANHOLE RISER ASSEMBLY. 4. _ II r ANTI SEEP COLLARS SHALL BE PLACED A MINIMUM OF 2 2 630 ,
u^ e'•a' s'•e^ r•e^ eM" „ e.o e'~e^ Er•o^ e.o oP a •eee exEEr s eNEer , oP s 4 REBAR FR M PIP IN ° i 0 E JO TS. ty •.•F v ;
sae"oi r~e.oi ~ T T T R MAT R A P I I TI N~ TIN ' ~ ~ . •;•y• r.. /q ~QP .
` ~4 REBAR 1. ALL POURED CONCRETE SHALL BE MINIMUM 3000 PSI (28 DAY) ~ : ; M ~ 0 PSI (28 DAY) UNLESS OTHERWISE NO1~D. ,.'..~;.:.•a;, T. /111
~'r /11111111 ,.a4
2. GEOTEXTILE FABRIC FOR THE 15 INCH OUTLET BARREL JOINTS 0.73 POLYPROPYLENE NON-WOVEN NEEDLE PUNCHED OR APPROVED EOI BARREL JOINTS SHALL BE AMOCO STYLE 4553 lZ'~ Z APPROVED EQUAL (NON-WOVEN FABRIC)
•
.BERM SOIL AND COMPACTION SPECIFICATIONS IFIC CATIONS;
NCDOT STD. 1, ALL FlLL SOILS FOR BERM SECTION SHALL 8E CLEAN, IMPERME 838.01 HEADWALL , , ELEVATION VIEW LEAST 95~ STANDARD PROCTOR MAXIMUM DRY DENSITY, AT OPTIMi CLEAN, IMPERMEABLE MATERIAL AND COMPACTED TO AT REVISIONS NSITY, AT OPTIMUM MOISTURE CONTENT. NO BLASTED 11-22-04 PER CITY COMMENTS
CDOT CLASS GRIP-RAP MATERIALS SHALL BE USED IN THE EMBANKMENT CONSTRUCTION, ' CONSTRUCTION. SOILS SHALL NOT EXHIBIT SIGNIFICANT 12-21-04 PER CITY COMMENTS
15" RC 28'Lx14'WxiB"THICK 6.3 LF 2"x2"xi 4" ANGLE ~ SHRINK/SWELL OR DISPERSIVE CHARACTERISTICS. ON-SITE GEOTE / 4 DIAMETER SOILS FOR PLACEMENT WITHIN THE BERM SECTION. THE GEOTECF ON-SITE GEOTECHNICAL ENGINEER SHALL APPROVE THE CONCRETE ANTI-SEEP COLLAR
A MANHOLE RISER METHODS TO BE USED FOR PLACEMENT OF F1LL. IF ADDITIONAL . THE GEOTECHNICAL ENGINEER SHALL ALSO SPECIFY THE N.T.S. IF ADDITIONAL USES PLANNED UPON THE BERM SECTION
A (BUILDINGS, ETC.), THE GEOTECHNICAL ENGINEER SHALL SPECIFY ~ SHALL SPECIFY SOILS SUITABLE FOR THAT ADDITIONAL USE.
2. IN ALL FILL AREAS OF THE BERM, A SOILS COMPACTION TEST --CITY OF DURHAM STORM i MPACTION TEST SHALL BE CONDUCTED EACH 2500 SQUARE DRAINAGE EASEMENT ~
FEET PER VERTICAL FOOT OF F1LL. i 45
~ t 3. A KEY TRENCH IS TO BE PROV1DED IN ALL FILL AREAS. TRENC ~ VARIABLE W TH CITY ~
BELOW EXISTING GRADE. SOILS AND COMPACTION FOR KEY TRENCI L AREAS. TRENCH TO EXTEND A MINIMUM OF FIVE FEET DURHAM ORM DRAINAG ~ FOR KEY TRENCH SHALL MEET ALL REQUIREMENT OF ~1 ~
10' TYP. ABOVE. ( ) EASEM FOLLOWING LOT LI / r
4. NO TREES OF ANY TYPE MAY BE LOCATED ON THE BERM SEC1 ~ ~ / i N THE BERM SECTIO .
5. FILL PLACEMENT SHALL NOT EXCEED A MAXIMUM 8" LIFT. EA( NCDOT STD. 28' ~4 REBAR WELDED ENTIRE LENGTH OF EMBANKMENT. BEFORE PLACEMENT OF FILL F M 8" LIFT. EACH LIFT SHALL BE CONTINUOUS FOR THE ~ ~ MENT OF FILL FOR THE BERM SECTION, ALL UNSUITABLE i ,1v
838.01 HEADWALL (TYP.) (SEE NOTES) MATERIAL SHALL BE REMOVED AND THE SURFACE PROPERLY PREP PROPERLY PREPARED FOR FILL PLACEMENT.
P~1N
• STATEMENT OF RESPONSIBILITY; ~ 20 CITY OF DURN STORM RAINAGE EASEME
4.1' DIA. REBAR RING ALL REQUIRED MAINTENANCE AND INSPECTIONS OF THIS FACILITY S \ ~ , THIS FACILITY SHALL BE THE RESPONSIBILITI' OF THE ?,2
15" RCP ELLERBEE CREEK PRESERVE HOMEOWNER'S ASSOCIATION PER THE , o ~S ATION, PER THE EXECUTED OPERATION AND MAINTENANCE
AGREEMENT FOR THIS FACILITY. ' , - ~ ~ ~ ~ 18" LAYER OF 3,15 ~1 . ~ i Sp ~ ~
- _ _ - CLASS 'B' RIP-RAP 6.3' DIA. REBAR RING ~ I g 8 ~ I
_ _ - "FILTER BLANKET P N VI W B~ INeTALL wI srero PIIetMpIM 4" Peas INII°E reaE aP flleICllAIE'MLE. LA E N• nff°~NeiN~AE ~TM"o°Er~°xa 4xEC0raoPOe o e~rlPS°Awo~wa x~al~vEO ~,tPP~wari ai npet txoiw wr etto to ullo nanom ne axnttcron wr tetto ~ ~ i ;vto tnlrrlt ~ntova Itdl txt txtttett ~ ne uet rr eua s~. I g
~I~lI~1~J~, - ~ - q~~ NOTES: "~"~s y,M \ I O S= I
TIN -A g ~ ~ t" ~ ` \ , ~ < w \ / I
FILTER BLANKET 1, ALL REBAR TO BE ~4 REBAR, =8 ~ r " IA ~ I OM I
A FILTER BLANKET IS TO BE INSTALLED (SEE NOTE) 2. ALL REBAR AND ANGLES TO BE GALVANIZED WITH A BITUMINOUS COAI1NG. P a~ BETWEEN THE RIPRAP AND SOIL FOUNDATION. H~ £ 1 I
H FITR N I F - ~ T E L E BLA KE? W LL CONSIST 0 A 3. THE HOT DIPPED, GALVANIZED 2x2 x1 /4 ANGLES SHALL BE WELDED TO THE REBAR TRASH 0 I ~ 1 ~ I
MINIMUM 4" THICK LAYER OF STONE (NCDOT RACK. ONCE WELDED, THE ENTIRE ASSEMBLY SHALL BE PLACED ONTO THE MANHOLE RISER WITH-`~ I- row e~ei ~ ~ , FOREBAY I I
#57) UNDERLAIN WITH MIRAFI FILTER WEAVE 700 ANGLES SITTING DIRECTLY ON TOP OF THE RISER. PLAN BIDE OR APPROVED EQUIVALENT ELEVATION ~ / ~ I
4. HATCH TO ALIGN WITH RISER STEPS AND RISING STEM OF PLUG VALVE. i ~Ir ~ ~ ~ I
C 5. HATCH TO BE CHAINED AND LOCKED. KEY TO BE HELD IN POSSESSION OF PARTY RESPONSIBLE " ~ L ,'•e' I L- L ~ J RET WALL
FOR MAINTENANCE OF WETLAND. ~ ELEVATION I~ I e~ ~ c~sT InoN ~ DE IGNED BY H RS EV TION ( ) \
OUTLET BARREL VELOCITY DISSIPATOR TRASH RACK DETAIL ~ ~
, g N.T.S. N.T.S. I \ I N ~ pl lS 7~
o k ~ I a~wo. I VARIA LE WIDTH TTY OF
~ In ~ ? ~ I DURH M STORM RAINAGE I 4 ~S I EASE .ENT F~OLLO ING STREA„ ~
~ ~4 REBAR TRASH RACK (ABOVE) ~ ~ T I 3 n~ ~ ~ I BUFF R
ANCHOR TRASH RACK TO MANHOLE WALL WITH FOUR EQUALLY SPACED .P1,dB_ EL v~~ i „ ~ ~ aloe " I ~ I vox e~ ATI CI` I 4:1 MI .SPILLWAY ~
HOT-DIPPED GALVANIZED STEEL CLAMPS. EACH CLAMP ATTACHED TO MANHOLE ' ~ ~ ~1N0°`ro TRASH RACK RISER BY 3-1/4" CONCRETE ANCHOR BOLTS EACH CLAMP TO BE COATED CF ~ SIDESL PES (TYP. MICRO ~ I
SEE DETAIL W A BITUMINOUS COATING. ^ N ( ) / tE11f0A01Nt amp r POOL I T, ~
N ELEVATION N I. It^ toNDTEiui alt It I ~ N ~ rwaln, ` I MxnNrv ttwt \ I F
' r, 840,6e SECTION A-A 1RASH RACK _ e4p•~ I I MEAS RE FROM Tpp OF
(SEE DETAIL) I 1 BANI I ~ I I BUIL ZON
rB ELEV. = 447.0 I I I E li \ II
(TOP OF RISER) \ I
3 l0 I I 4 DIA. RECAST RI ER ~ ~ p OF \ I I CREST LEV. = 44 .00
~ 5 9 \ I I 4 ~ FRM I 3.00
448 \ I 30' WI EMER ENCY SPIL AY ~?s ~ I I ELEV. 447.5
4' I Wip f I I
4 MANHOLE RISER (PRE-CAST SECTIONS) " 5 (T1'P,) \ M/H LINE RE EM LLWAy , ~ ~ I ~ 1 AND DOWN STREAM BERM TH ~
V ABLE WDTH CITY 0 ~ ~X I SYN ETIC INDU TRIES "P MAT"
~ MANHOLE RISER I HAM ST E ~ ~ APP INS TION ~ T
BARREL INV. IN = 443.00 (PRE-CAST SECTIONS) EASEMENT LLOWING S~'REAM BE ERfORMED ITH A ~ BUFFER MAN FACTURER' REPRE ENTATIVI~ ~
ON ITE. Q_~. " I DATE: 10-12-2004
o t o U 6 F - -RING RCP
4 LF - 1.5" DIA PVC ~ L 5 0 i Qc ~ 1.oox SCALE: SEE SHEET
" o , I I 6 ~ I
" ' ~ 15 DIA. RCP 1,5 DIA. PVC ~ ~ ~ ~ NCDOT S D. 0838.01 ~ JOB N0. 1061-02.30
~ - ENDWALL (EE DETAIL) ~ ~ z I
~ PVC INV. - - _ 15" DIA. RCP I ~ f
\ ~ ~ ~ _ _ _ _ 1 i NC~OT CI A. S 'R' P-RAP
LLLV = 44,),UU T 28'Lx14'Wx1"THICK I
d d ~ ` CHECKED BY. WTO
d 4 N d d M ~ II I i
ry I 1
o d 4 AIL o of 15
0 6d Q 4 M CIRCULAR CONCRETE CIRCULAR CONCRETE Q d 0.1 SHEET II
ANTI-FLOTATION BLOCK SIDE VIEW ANTI-FLOTATION BLOCK
m FRONT VIEW GRAPHIC SCALE PD 1
0 20 0 10 20 40 WETLAND BASIN - GRADING PLAN
DRY POND OUTLET STRUCTURE AI DRY POND OUT ET STRUCTURE AI g N.T.S. N.T.S. 1°=zo'
1 inch = 20 f FINAL DRAWING NOT RELEASED FOR CONSTRUCTION

These drawings are instruments
of service and as such remain the pro~arty of the eng9ineer,
No copies or roproductione of LEG ND these drawin a are permitted
without consent of the engineer. U Upon completion of the work
all drowinga{except the contract ZONE 1 -WETLAND EMERGENT HERBACEOUS SPECIES (3-12 INCHES OF WATER) copies) are to be roturned to
~ ~ the engineer.
~ Copyright © 2003
ZONE 2 -WETLAND SHALLOW LAND SPECIES
- ~ \ ~~o / / ZONE 3 -FLOATING SPECIES FOR DEEP POOLS AND FOREBAYS
/ ~
/ ~ ~ ~
/
/
~ ~ ~ \ \ / ~
uane tewart
~ & ASSOCIATES, INC.
/ ~
CONSULTING ENGINEERS
\ ~ ~ ~ / ~ ~ ~ ~
Civil Sanitary • Environmental ~ Plonning • Design • Survey
i'
3715 University Drive
Durham N.C. 27707 [phone]
fax [phone]
i" a-mail: info0dksa-t~.com
www•dksa-tsi.com
~ ~ ~ / SEAL
I
~ I. ~ STORMWATER WETLAND PLANT LIST ~ CARp
~i ~ DESCRIPTION QUANTITY 04,.•'•~S ti
' ZONE 1 PICKEREL WEED PONDTEDERIA CORDATA 80-100 ~ ~ ( ) ~ ;
3,585 S.F. DUCK POTATO (SAGITTARI LATIOLIA) 100-120 Q ~ ; ~ 80-100 A BULRUSH
• 22630 BLUE FLAG IRIS IRIS VIRGINIANA 50-60 ~ / ( )
' LIZARDS TAIL (SAURURUS CERMUS) 120-140 ; ~y':,F Q~,:' v; ~ Q ••NG I NE~:••
~ P~~~. ~ ~~q ZONE 2 CARDINAL FLOWER (LOBELIA CARDINALIS) 40-50 M T p4
~ 1,717 S.F. MARSH MALLOW (HIBISCUS SP.) 50-80 .0~
40-50 ~ INKBERRY (ILEX GLABRA) ~ti
~ SWEET PEPPERBUSH (CLETHRA ALNIFOLIA) 30-40 VIRGININA SWEETSPIRE (ITEA VIRGINICA) 60-BO
~ ~ ~ ~ 1 I
ZONE 3 AMERICAN LOTUS NELUMBO LUTEA 10-20 REVISIONS i ( )
1,406 S.F. WATER LILY (NYMPHAEA ODORATA) 20-30 ~ ~ 20-30 11-22-04 PER CITY COMMENTS COW LILY (NUPHUR LUTEUM)
~ 12-21-04 PER CITY COMMENTS
/ ~
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NOTE:
STORMWATER WETLANDS ARE DESIGNED TO RETAIN AND IMPROVE THE QUALITY OF
STORMWATER RUNOFF• TO FULFlLL THE WATER RETENTION FUNCTION, THE TEMPTATION
~ ~ ~ ~ IS TO DESIGN STORMWATER WETLANDS WITH EXCESSIVE STORAGE AREAS WITH DEEP WATER, PREVENTING THE ESTABLISHMENT OF EMERGENT HERBACEOUS SPECIES WHICH
r / N P IES WI L CAN BEST SLOW AND TREAT STORMWATER RUNOFF. MANY EMERGE T S EC L
PERFORM WELL IN 3-6 INCHES OF WATER• TO ENCOURAGE COLONIZATION BY NATIVE
~ ~ ANNUAL AND PERENNIAL WETLAND SPECIES, A SMALL QUANTITY OF SOIL (SEED BANK) CAN BE COLLECTED FROM NEARBY NATURAL WETLANDS AND DISTRIBUTED OVER THE W
CONSTRUCTED WETLAND. CATTAILS (TYPHA SP.) CAN BE INTRODUCED WITH SEED
BANKS OR NATURAL MEANS AND CAN QUICKLY CHOKE OUT THE OTHER VEGETATION IN THE WETLAND. CA CAN BE CONTROLLED IN THE EARLY PHASES OF
~ COLONIZATION IPIN .WITH AQUATIC FORMULATIONS OF THE SYSTEMIC HERBICIDE
GLYPHOSATE• AIN A STORMWATER WETLAND IN A DENSE, HERBACEOUS, VEGETATIVE STATE, AVOID PLANTING, OR CONTROL LARGE SHRUBS OR TREES THAT
\ \ ~ COULD SHADE OUT HERBACEOUS SPECIES. DATE: 10-12-2004
SCALE: 1 " = 10'
1 1- .30 JOB N0. 06 02
~ DRAWN BY: DLP ~ ~ «r~
_~t ~
\ ~ ! ' ' CHECKED BY; WTO
i
\ ~ ~ ~ _ - i
O I
\ ~ I GRAPHIC SCALE SHEET
I 10 o s 10 so
PD~
, 1 inch = 10 tt.
0 OF 15 FINAL DRAWING - NOT RELEASED FOR CONSTRUCTION

of eiervlceaond as sucks remaints
PERMANENT BERM SEEDING SCHEDULE TEMPORARY BERM SEEDING SCHEDULE BERM SEEDBED PREPARATION , 10 (MIN.) the property of the engineer, - No copies or reproductions of
1, CHISEL COMPACTED AREAS AND SPREAD TOP501L 3 INCHES BEEP ovER ADVERSE SOIL TOP OF BERM ELEV. = 448,; I ELEV. - 448.25 these drawings are permitted without consent of the engineer.
SEEDING DATE SEEDING MIXTURE APPLICATION RATE SEEDING DATE SEEDING MIXTURE APPLICATION RATE ) coNOmoNS, IF avaLABLE. 100 YEAR WSE = 447.98 iE = 447.98 Upon completion of the work
AUC 25 - OCf, (BEST) K31 TALL FESCUE 200 L85/AC JAN 1 -MAY 1 RYE (GRAIN) 120 LBS/AG 2,) RIP THE ENTIRE AREA TO 8 INCHES DEPTH. 1O YEAR WSE = 447,57 afl drawinga(except the contract ' = 447.57 copies) are to be rotumed to
FEB. -APR 15 (POSSIBLE) KOBE LESPEDEZA 50 LBS/A,C 3.) REMOVE ALL LOSE ROCK, ROOTS, MID OTHER oesTRUCTK>NS LEAVING SURFACE EMERGENCY SPILLWAY ELEV, the engineer. iPILLWAY ELEV. = 447.50
SOIL AMENDMENTS MAY 1 - AUG 15 GERMAN MILLET 40 LBS/AC REASONABLY SMOOTH AND UNIFORM, - - - - - Copyright © 2003 = 446.51 R R NCDOT STD. 838.01
APPLY LIME MID FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 4000 LB/ACRE _ 4.) APPLY AGRICULTURAL LIME, FERnUZER, AND SUPERPHOSPHATE UNIFORMLY AND MIX WRH 1 YEAR WSE = 446.51 GROUND AGRICULTURAL LIMESTONE AND 1000 LB/ACRE 10-10-10 FERTILIZER. ~ 15 DEC 30 RYE (GRAIN) 120 LBS/AC SOIL (sEE BELOw•). TOP OF RISER ELEV. = 446,1 OUTLET ST UCTU E BERM ENDWALL (SEE DETAIL) 3 ELEV. = 446.50 SEE DETAIL SECTION
MULCH SOIL AMENDMENTS 5.) CONTINUE TILLAGE UFTTIL a WELT.-PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS
APPLY 4D00 LB/AC STRAW. ANCHOR STRAW BY TACKING WRH ASPHALT, NETTING, OR A FALLOW RECOMMENQATIDrIS OF SOIL TESTS OR APPLY 2,000 LB/AC GROUND PREPARED 4 TO 8 INCHES DEEP.
MULCH ANCHORING TOOL. A DISK WRH BLADES SET NEARLY STRAIGHT CAN BE USED AS AGRICULTURE LIMESTONE AND 750 LB/AC 10-10-10 FERTILIZER (FROM AUG 15 - A MULCH ANCHORING TOOL. DEC 30, INCREASE 10-t0-10 FERTILIZER TO 1000 LB/AC). 6.) SEED ON A FRESHLY PREPARED SEEDBED AND COVER WATEF NON-WOVEN GEOTEXTILE FABRIC SHALL BARREL WATER TIGHT GASKET SEAL BE PLACED AROUND EACH JOINT OF INV. OUT = 442.69
MAINTENANCE 7,) MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. RCP BARREL IN 2' WIDE STRIPS ~
INSPECT AND REPAIR MULCH FREQUENTLY. REFERTIUZE IN LATE WINTER OF THE APPLY 4000 LB/AC STRAW. ANCHOR STRAW BY TACKING WRH ASPHALT, NETTING, OR " CENTERED ON JOINT. ~ 4 LF - 1.5 DIA. PVC
FOLLOWING YEAR; USE SOIL TESTS OR APPLY 150 LB/ACRE 10-10-10, MOW A MULCH ANCHORING TOOL A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED B.) INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN 4 LF REGULARLY TO A HEIGHT Of 2-4 INCHES, AS A MULCH ANCHORING TOOL THE PLANTING SEASON, IF POSSIBLE, IF STAND SHOULD BE OVER BOX DAMAGED, REESTABLISH FOLLOWING ORIGINAL LIME, FERTILIZER MID SEEDING RATES, SEED LIGHTLY R NCDOT CLASS 'B' RIP-RAP BAR EL
WITH SEEDk1C EQUIPMENT OR CULTIPACK AFTER SEEDING, INV. IN = 443.00 28'Lx14Wxi8"iHICK 45' ELBOW
NURSE PLANTS MAINTENANCE BEtWEEN MAY 1 AND AUG, 15, ADD 15 LB/ACRE SUDANCRASS OR 10 LB/ACRE GERMAN JAN 1 - AUG 15: REFERTIUZE IF GROWM IS NOT FULLY ADEQUATE RESEED, g,) CONSULT CONSERVATION INSPECTOR ON MNNTENANCE TREATMENT AND FERTILIZATION 1 LF - " 1 LF - 1.5 DIA. PVC
MILLET. BEFORE MAY 1, OR AFTER AUG. 15, ADD 40 LB/ACRE RYE (GRAIN). REFERRUZE, AND MULCH OMEDATELY FOLLOWING EROSION OR AFTER PERMANENT COVER IS ESTABLISHED. OTHER DAMAGE POND INV, ELEV. = 443,00 62 LF - 15" 0-RING RCP ®0.5076 (CL. III RCP) ~ LEV. = 443.00 a~
AUC iS -DEC 30REPAIR MID REFERIIUZE DAMAGED AREAS IMMEDUTELY, TOP DRESS 2 • ~ rl~ '
WITH 50 l8/AC OF NITROGEN IN MARCH, IF R IS NECESSARY TO ~ 1 1
EXTEND TEMPORARt' COYER BEYOND JUNE 15, OVERSEED WITH 50 MICRO POOL ELEV. = 440.00 LB/AC KOBE LESPEDEZA IN LATE FEBRUARY OR EARLY MARCH. • See aeoaonal application schedule ti - 1
uane tewart CONCRETE ANTI-FLOTATION BLOCK ANTI-SEEP COLLAR (X2) SEEP COLLARS TO
o CONCRETE A~ SEE OUTLET STRUCTURE DETAIL BE SPACED AT 20.67 O.C• (SEE DETAIL). ASSOCIATES, (INC. ( ) WATERTIGHT SEAL TO BE PROVIDED AT COLLAR SHALL BE PLACED A MINIMUM OF 2
M9 CCESS GATE CENTERED ON (SEE OUTLET ~,r ( RISER/BARREL INTERFACE FEET FROM PIPE JOINTS. CONSULTING ENGINEERS
yo ~ MANHOLE STEPS) END OF NOTES: r ~ ACCES V RLAP ~ ~y core Ae [eolGieO ax LAeI H S GATE SHALL 0 E m -t ~ z ,
Mg-+=a BELL Etu DF nrE ¢ ~ vr= ~ ON TOP OF 6.3 DIA. REBAR 1,BASIN IS TO USED AS A SEDIMENT BASIN FOR EROSION i 0 1 LL 4.1 DIA, REBAR RING g„~~m io FACE of MLLE o~ RING CLEANED OF SEDIMENT AND STABILIZED IMMEDIATELY AFTER FOR EROSION CONTROL. BASIN IS TO BE ~EDIATELY AFTER APPROVAL HAS BEEN GIVEN TO KEY TRENCH SEE BERM MIN•
=,z,NO° \ _ a ~"w REMOVE THE SEDIMENT BASIN, ( SOIL AND COMPACTION Civil Sanitary • Environmental
~ ,y I I y., ~ I I I I ~ H , ~ ~ ~ ~ ~ s ~ ,N 3,2 RAD" " SPECIFICATIONS) Planning • Design • Surrey
1 , , oo¢c, ~M 2. INTERIOR OF BASIN AND ENTIRE BERM TO BE COVERED N„ s" 1 PIP! M.eMa c PRIOR TO SEEDING. SEE PERMANENT AND TEMPORARY BEI '0 BE COVERED WITH 2-3 LAYER OF TOPSOIL TEMPORARY BERM SEEDING SCHEDULE AND BERM
1~ F SEEDBED PREPARATION. REMAINDER OF BASIN INTERIOR (E SIN INTERIOR (EXCLUDING BERM) TO BE COVERED
WITH A WET MEADOW SEED MIXTURE (120 Ib./ACRE). BAS PLAN , - SEEDING, Ib./ACRE). BASIN TO REMAIN UNMOWN AFTER N.T.S. 3715 University Drive
Faaillla Durham, N.C• 27701 [phone]
IIF caar, voter to ue¢D> DOWEL" J ~ _ ~ m ¢ , ® END ELEVATION X 5 = ~ POND OUTLET STRUCTURE NOTES: fax [phone]
a O LL ~ Sz >D ~ ~ v, 6.3 DIA. REBAR RING " OTES: a-mail: info0dksa-tsi•com www.dksD-tsi.com
pm ~ ~ FABRICATED HINGE 1. 15 RCP OUTLET BARREL SHALL BE CLASS III RCP MEE ~ O ~ i DaELe to e,oeuL tnn+ trctxroeceo caxdtere nre ~ o ASS III RCP MEETING THE REQUIREMENTS OF ASTM C76• THE PIPE 'ER GASKET JOINTS MEETING ASTM C-443 AND ASTM C-361 •
o c PIPE eIIgLF IIFE oaune rtre ~ D $ JOINTS SHALL BE CONFINED 0-RING RUBBER GASKET JOIN A r m ~ I I ~ I I I I I I I ou. ,e" n• s~^ aa^ ee^ xe^ u• te° w^ ao^ 7e" x¢^ a• ~ v HATCH DETAIL ,
m m = ~ ~ ~ ~ ~ ~ ~ I aura ^x^ ^x^ ^x" "x" •z• r• •z" r• ^z" ^x" ^x^ ^x" ^x" "X" r^ ^x" r• J yI ' 2. THE MANHOLE OUTLET RISER SHALL BE 4 I,D„ MEETIP e e arr. ¢ e a s a a a a a a x a J d BASE. THE MANHOLE JOINTS SHALL BE ASTM C-443 RU ' IN -478R do AASHTO M-199 MONOLITHIC 2.33' MIN• PROJECTION 4 I•D•, MEET G ASTM C 6» 4STM C-443 RUBBER GASKET JOINTS. MANHOLE JOINTS SHALL BE
N M ~ e Orr. ¢ ¢ + t ¢ ¢ ¢ e ¢ a ¢ {L 4 ' 'ENT SEPARATION. CONTRACTOR IS RESPONSIBLE FOR DESIGN OF NOTES, . SEAL
m ~ r- o ~ ousel ¢ arr. ¢ e a . ¢ ~ e e e a ¢ ¢ < a 6.3 DIA, REBAR RING SECURELY ANCHORED TOGETHER TO PREVENT SEPARATION r' L » to » » a n ee ~ W THE MANHOLE SECTION ANCHORING SYSTEM. m T°'"` "e' ' a " " ~ 1° ~ _ ~ 4.1' DIA. REBAR RING 1• CONCRETE FOR COLLARS SHALL BE 3000 PSI MIN• 28 DAY j=' • ( )
' ~ ~ arr[aaL aear¢uertoe ,roles to W m g ~ ~ Dle¢enoee we oaetDUrE auwer[T[p ~ ~ ~ 3. OUTLET STRUCTURES SHALL BE PROVIDED WITH STEPS " STRENGTH :D WITH STEPS 1 -2 ON CENTER. STEPS SHALL BE IN +a"""'~~~
W $ ELEVATION D xar<rE oouL¢ nrE N 8 ~ ACCORDANCE WITH NCDOT STD. 840,66. 2. WAT R CA COLLARS SHALL BE CONNECTED TO 15 RCP WITH A E Rp , C
N ~ DDrroe tees e[eau r[ ~ e "x "x1 4" 0,5 ao D e e o r e ~ ro~ e L ro~ ~ p o 6.3 LF 2 2 / ANGLE ~ ~ $ ,e^ a'•s^ ,'•e" ¢u" ¢k^ e'•e" o,r r•e" ,.o w = ~ ~ 4, CONCRETE ANTI-FLOTATION BLOCK SHALL BE INTEGRALL TIGHT JOINT. Q~•,. .L BE INTEGRALLY ATTACHED TO RISER BASE TO PREVENT • : ' ~ ~ 0 ;
m te^ a'.1^ r.,o^ a'.:^ ¢k" to^ e'•+^ ,.a s'a" r•tt" ,,a w RISER/BLOCK SEPERATION, OR PRECAST AS THE EXTENDEC >M^ a•,^ ~'•a^ s^ to^ e'•o^ t.e a'•e" n'-a^ ¢.0 0.5' THE CONCRETE ANTI-FLOTATION BLOCK IS CAST SEPERATE A F THE MANHOLE DURING FABRICATION. IF 3~ COLLAR SHALL BE SPACED ALONG BARREL AT 20.67 O.C. " I R P 00 i THE EXTENDED B SE 0 15 DIA. 15 D A. C ; Q ;
aa" e'•o" ¢'•e• 1'-1^ ~u" +tk" ¢.a ~'.a" ,a'•e^ s., ELEV. 290,00 ae^ e'•e^ ¢'•e^ e'•e" +1e^ nk",r•o" a.+ e'•o" te'•a" a,e (TOP OF RISER) 0 5' SHALL BE RESPONSIBLE FOR ANCHORING THE ANTI-FLOTAT CAST SEPERATE FROM THE MANHOLE ASSEMBLY THE CONTRACTOR 0-RING RCP = ~ L II ' 'HE ANTI-FLOTATION BLOCK TO THE MANHOLE RISER ASSEMBLY. ~
as• e'•¢" a'•,^ e'•~" eu" „k"t¢'-e" +.e a'•to" »'•e" e.o 4• ANTI-SEEP COLLARS SHALL BE PLACED A MINIMUM OF 2 ~ 22630 FROM PIPE JOINTS, ~ ~ , ' ~ 1
b° e'•e^ a'•e• r•¢^ e1e" n ^ u'•e" e.o e'•e" ¢P-o^ e.o EET 1 aF 9 •e!! eeeEr a 838 of #4 REBAR OUTLET STRUCTURE MATERIAL SPECIFICI FI ATI N . ~ .,c I NE,.
838.01 #4 REBAR p I SPEC C 0 S' ~i • , P
1, ALL POURED CONCRETE SHALL BE MINIMUM 3000 S I ~IUM 3000 PSI (28 DAY) UNLESS OTHERWISE NOTED.
' 2, GEOTEXTILE FABRIC FOR THE t5 INCH OUTLET BARREL 0.73 POLYPROPYLENE NON-WOVEN NEEDLE PUNCHED OR APPRf OUTLET BARREL JOINTS SHALL BE AMOCO STYLE 4553 1D
p• a ICHED OR APPROVED EQUAL (NON-WOVEN FABRIC)
BERM SOIL AND COMPACTION SPECIFICI J P IFI ATI N '
NCDOT STD. 1, ALL FILL SOILS FOR BERM SECTION SHALL BE CLEAN, REVISIONS TALL BE CLEAN, IMPERMEABLE MATERIAL AND COMPACTED TO AT
836.01 HEADWALL , , ELEVATION VIEW LEAST 95X STANDARD PROCTOR MAXIMUM DRY DENSITY, I DRY DENSITY, AT OPTIMUM MOISTURE CONTENT. NO BLASTED
CDOT CLASS B RIP-RAP MATERIALS SHALL BE USED IN THE EMBANKMENT CONSTRI 15" RC 28'Lx14'Wx1B"THICK 6,3 LF 2"x2"x1 4" ANGLE 4' DIAMETER SHRINK/SWELL OR DISPERSIVE CHARACTERISTICS. ON-SIl JKMENT CONSTRUCTION, SOILS SHALL NOT EXHIBIT SIGNIFICANT tIST1CS. ON-SITE GEOTECHNICAL ENGINEER SHALL APPROVE THE CONCRETE ANTI-SEEP COLLAR
/ SOILS FOR PLACEMENT WITHIN THE BERM SECTION. THE MANHOLE RISER METHODS TO BE USED FOR PLACEMENT OF FILL. IF ADC SECTION. THE GEOTECHNICAL ENGINEER SHALL ALSO SPECIFY THE N•T.S•
A A (BUILDINGS, ETC.), THE GEOTECHNICAL ENGINEER SHALL S )F FILL, IF ADDITIONAL USES PLANNED UPON THE BERM SECTION GINEER SHALL SPECIFY 501LS SUITABLE FOR THAT ADDITIONAL USE.
, i _ ~
2. IN ALL FlLL AREAS OF THE BERM, A SOILS COMPACTIC FEET PER VERTICAL FOOT OF FILL. 101LS COMPACTION TEST SHALL BE CONDUCTED EACH 2500 SQUARE ~ 44
~ ~ ~ t i 45
3, A KEY TRENCH IS TO BE PROVIDED IN ALL FILL AREA. INIM M F FlVE FE VARIABLE W TH CITY ~ ALL FILL AREAS. TRENCH TO EXTEND A M U 0 ET ~ ~ ~
BELOW EXISTING GRADE. SOILS AND COMPACTION FOR KE: F. 'ACTION FOR KEY TRENCH SHALL MEET ALL REQUIREMENT OF #1 . DURHAM ORM DRAINAG (y I ~ EASEMENT FOLLOWING LOT LI / r.-.
10' (TYP.) ABOVE. . ° ~ i ~ ~ i
4. NO TREES OF ANY TYPE MAY BE LOCATED ON THE BE 1TED ON THE BERM SECTION. I i 1 ~
5. fiLL PLACEMENT SHALL NOT EXCEED A MAXIMUM 8" L v MAXIMUM 8" LIFT. EACH LIFT SHALL BE CONTINUOUS FOR THE ~
NCDOT STD. 28' ~4 REBAR WELDED ENTIRE LENGTH OF EMBANKMENT. BEFORE PLACEMENT 0 E PLACEMENT OF FILL FOR THE BERM SECTION, ALL UNSUITABLE i ;
838.01 HEADWALL TYP. SEE NOTES MATERIAL SHALL BE REMOVED AND THE SURFACE PROPEF ( ) ( ) P,~AN SURFACE PROPERLY PREPARED FOR FILL PLACEMENT. \ ~
~ 20 CITY OF DURH STORM g
STAT M NT F P N I I ITY• 4.1' DIA, REBAR RING ALL REQUIRED MAINTENANCE AND INSPECTIONS OF THIS F, TY' DRAINAGE EASEME i IONS OF THIS FACILITY SHALL BE THE RESPONSIBILITY OF THE ~
15" RCP ELLERBEE CREEK PRESERVE HOMEOWNER'S ASSOCIATION, I i ASSOCIATION, PER THE EXECUTED OPERATION AND MAINTENANCE 1
AGREEMENT FOR THIS FACILITY, I
_ _ I ~ I=1 I 18" LAYER OF 3.15 f~ , I ~
CLASS 'B' RIP-RAP 6.3' DIA. REBAR RING ~ - - - - - n t~„ INBTAIA N.L /TEPa PROIMlD[ea fR011 IN¢IDE FADE Of ITMIaIURE 'MLL. - - FILTER BLANKET PLAN VIEW 5~ ~ ENAINEEA IITXNDETA~t~ 1HE~Iq~EDIe°NrEre uwm I~'416uRECEFIVED EI ~ I ~ `g Of E7AUCIURE 'MLL. M I WIEIIULB FRpI TNO/E elOElll WY ALSO IAEO PADNEDED 711E OON7AACT011 IIAI T~[8NE0 I
' NOTES: ~s AND 141E RECEIVED NAIITEN APIROVAL FAOM THE E4g3NEEA ROR TIIF UEE OF EUIRI E I - - ~ I !
g ~ x~ ~ SECTION A A R ART 4 R AR ~ ~ ~ I__ ~ I ,
~ FILTER BLANKET i. ALL EB 0 BE ~ EB :M ~ I- ~ ~W ~ I =
A FILTER BLANKET IS TO BE INSTALLED (SEE NOTE) 2. ALL REBAR AND ANGLES TO BE GALVANIZED WITH A BITUMINOUS COATING, p~~,~ = a " ~WR ~ G I I " ~ 'N ~ .I
e`DO ~ BETWEEN THE RIPRAP AND SOIL FOUNDATION. 1 I ~ I
THE FILTER BLANKET WILL CONSIST OF A 3. THE HOT-DIPPED, GALVANIZED 2"x2"x1/4" ANGLES SHALL BE WELDED TO THE REBAR TRASH rr , I ~ pLAN BIDE I
MINIMUM 4" THICK LAYER OF STONE (NCDOT RACK. ONCE WELDED, THE ENTIRE ASSEMBLY SHALL BE PLACED ONTO THE MANHOLE RISER WITH ~ X57) UNDERLAIN WITH MIRAFI FILTER WEAVE 700 ANGLES SITTING DIRECTLY ON TOP OF THE RISER, PuN ELEVATION DE ELEYATION ~ I 1TION ~ ~ I
OR APPROVED EQUIVALENT 4, HATCH TO ALIGN WITH RISER STEPS AND RISING STEM OF PLUG VALVE, ate,, r
m ~i I
5, HATCH TO BE CHAINED AND LOCKED. KEY TO BE HELD IN POSSESSION OF PARTY RESPONSIBLE G ~ In r~o^ _I ~ I~ Ir t4k' _I / CABT IKON CART IAON ~ ~ ~ \
FOR MAINTENANCE OF WETLAND. ~ EL.EYATION ELEVATION ~ ~ RETAINING WALL
V I I SIPAT R TRA H RA K I ~ " OUTLET BARREL ELOC TY D S 0 DETA L , (DESIGNED BY OTHERS) ~ I NEAR oR \ I
N.T.S. N.T.S. :1, ak" , I VARI LE WIDTH ITY OF
e ~ ~ I DURH STORM DRAINAGE ~ ~ i NT F ING. STR I ~
m X14 REBAR TRASH RACK (ABOVE) ~ J a 3 ~ I BUFFER
p " 31~L BIDE ANCHOR TRASH RACK TO MANHOLE WALL WITH FOUR EQUALLY SPACED ~ ~ k• eLEVATION JM \ I I I
HOT-DIPPED GALVANIZED STEEL CLAMPS. EACH CLAMP ATTACHED TO MANHOLE ~ ~rPOe"a N " PLAN ELE ANION ~ I ~ I _
TRASH RACK RISER BY 3-1/4 CONCRETE ANCHOR BOLTS EACH CLAMP TO BE COATED a REINFdIC71q ET~t ~ f ~ i I I
g SEE DETAIL W/ A BITUMINOUS COATING, ELEVATION N ( ) Rmc: ICR r ~ ~ ~ I I . 7E• N xm UN INR 00 ~ I TY F _ I
E T uN~ ARr EEAE Ee ¦ur 10? i I j I M H BEOTION A-A - 84p,~ I i EAS RE FROM T P
o` RA K 840.86 SECTION A-A TRASH C c (SEE DETAIL) I I OF BANK \ I '
ELEV. = 446,50 _ \ I I I BUIL , 20NE I I I I ~
(TOP OF RISER) \ I I i - 4' DIA. PRECAST RI ER I I
d Tpp \ I I pF \ I I CREST LEV, = 446.50
3 9 I - 43.00 \ FRM \ I ~
5" TYP. ~ ( ) 4q~ \ I 30' WI , EMER ENCY SPI AY
~ 4' I M R \ 2g I I ELEV• ` 447.5 (10 \ I ~ I I \ W/p I 1
S MANHOLE RISER 0 \ EMI I LINE IRE EM LLWAy i +V . I
(PRE-CAST SECTIONS) 5" (TYP ~ ~ , \ ~ ~ AND DOWN STR M BERM TH I V W TH CITY 0 ~ \ I SYN ETIC INDU TRIES "P AT" ABLE D ~ ` I APP INST TION I T
AM - 6 ~ MANHOLE RISER HAM 5T E r \ ~ ,
M (PRE-CAST SECTIONS) EASEMENT - LLOWING SIfREAM BE PERFORMED ITH A • i
BARREL INV. IN = 443.00 BUFFER MAN~IFACTURER' REPRE ENTATIV~ I 4 ON-151TE• , 0 \ _
in . n I DATE: 10-12 2004
o M o v 6 LF - 5" 0-RING RCP ~ ~ i o•5ox SCALE: SEE SHEET
~ 4 LF - 1.5" DIA PVC 0~ I .I 6 ~ ,
15" DIA, RCP 1,5" DIA, PVC ~ ~ ~ ~ NCDOT D• 0838.01 i I JOB N0. 1061-02.30
i~ ~ ENDWALL EE DETAIL) ~ I
I I N BY: LP DRAW D
MM 1\Il/ •eM n,a nnn ~ ` ~ ~ I ~ urnnT r1 e c 'a' a D-RLP
p rv%l Illy. _ I~ UIN. RUr V ELEV. = 443.00 28'Lxl4'Wxl!8'THICK° I
CHECKED BY: WTO
d C O d d Q ~ i I I
d
N 4 Q' a o AIL
%D 6' d Q ° M 0.1 SHEET II
CIRCULAR CONCRETE CIRCULAR CONCRETE a d
ANTI-FLOTATION BLOCK "SIDE VIEW" ANTI-FLOTATION BLOCK GRAPHIC SCALE PD~l
"FRONT VIEW" m 0 20 0 10 20 40 WETLAND BASIN - GRADING PLAN
DRY POND OUTLET STRUCTURE DETAIL DRY POND OUTLET STRUCTURE DETAIL 1 °=20' OF 15
o N.T.S. N.T.S. 1 inch = 20 ft. FINAL DRAWING - NOT RELEASED FOR CONSTRUCTION

These drawings aro instruments of service and ae such remain
the property of the engineer, No copies or reproductions of
these drawings are permitted ~ without consent of the engineer•
~ Upon completion of the work all dr wings(except the contract
ZONE 1 -WETLAND EMERGENT HERBACEOUS SPECIES (3-12 INCHES OF WATER) coples~ are to be returned to
~ the engineer.
\ ~ • • • • • • Copyright ZONE 2 -WETLAND SHALLOW LAND SPECIES
\ , /
/ ZONE 3 -FLOATING SPECIES FOR DEEP POOLS AND FOREBAYS
/ _
- ~ ~ ~ r~
. ~ \ ~
/ ~
/ ~
~ ~ ~ _ i ~ ~ ~ ~ ~ i
vane tewart
& ASSC~IATES, INC. ~ ~
I CONSULTING ENGINEERS
Civil SanRory • Environmental
Planning • Design • Survey
~ ~ ~
3115 University Drive Durham, N.C. 21707
~ ~ ~ ~ / [phone]
fax [phone] e-mail: info0dkso-tsi•com
I ~ ~ www,dksa-tsi•com
I
\ I \ / II I
~ v i
I SEAL
I
~ \ I ++puui,q,~ STORMWATER WETLAND PLANT LIST
oARO
I DESCRIPTION Q 0 ~g
I ~ ~ 80-100 ~'OF . 9 , I s ZONE 1 PICKEREL WEED (PONDTEDERIA CORDATA) ~ ~ ~ DUCK POTATO (SAGITTARI LATIOLIA) 100-120 ; 4
I / I eo-1oo - - AL BULRUSH 22630 - ~
~ BLUE FLAG IRIS IRIS VIRGINIANA 50 60 ( ) ~ ~ 3 I ~ : V
' ~ I~__-__ LIZARDS TAIL (SAURURUS CERMUS) 120-140 ~ ~ ,FN ~ . ~ I NE . .
ZONE 2 CARDINAL FLOWER LOBELIA CARDINALIS 40 50 4qM 0'Q
I I MARSH MALLOW (HIBISCUS SP.) 50-80
INKBERRY (ILEX GLABRA} 40-50 ~0' I SWEET PEPPERBUSH (CLETHRA ALNIFOLIA) 3D-40
~ i i ~ ~ VIRGININA SWEETSPIRE ITEA VIRGINICA 60-80 ( )
I ~...,..-..T.... ZONE 3 AMERICAN LOTUS (NELUMBO LUTEA) 10-20 REVISIONS
I ~ WATER LILY NYMPHAEA ODORATA) 20-30 '
~ I I ~ ~ I ( glg COW LILY (NUPHUR LUTEUM) 20-30
I I
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NOTE:
STORMWATER WETLANDS ARE DESIGNED TO RETAIN AND IMPROVE THE QUALITY OF
~ ~ ~ STORMWATER RUNOFF. TO FULFILL THE WATER RETENTION FUNCTION, THE TEMPTATION IS TO DESIGN STORMWATER WETLANDS WITH EXCESSIVE STORAGE AREAS WITH DEEP z
WAT R PR NTING THE ESTABLISHMENT OF EMERGENT HERBACEOUS SPECIES WHICH f E ~ ~ J
~ ~ ~ I CAN BEST SLOW AND TREAT STORMWATER RUNOFF. MANY EMERGENT SPECIES WILL
~ ~ ~ ~ I i g PERFORM WELL IN 3-6 INCHES OF WATER, TO ENCOURAGE COLONIZATION BY NATIVE I I ANNUAL AND PERENNIAL WETLAND SPECIES, A SMALL QUANTITY OS SOIL (SEED BANK)
f CAN BE COLLECTED FROM NEARBY NATURAL WETLANDS AND DISTRIBUTED OVER THE W 4
g ~ ~ E ~ ~ \ ~ j CONSTRUCTED WETLAND. CATTALS (TYPHA SP,) CAN BE INTRODUCED WITH SEED BANKS OR NATURAL MEANS AND CAN QUICKLY CHOKE OUT THE OTHER VEGETATION IN
r ~ THE WETLAND, CATTAILS CAN BE CONTROLLED IN THE EARLY PHASES OF x
I RITE COLONIZATION BY WIPING WITH AQUATIC FORMULATIONS OF THE SYSTEM C HE B C D GLYPHOSATE. TO MAINTAIN A STORMWATER WETLAND IN A DENSE, HERBACEOUS,
~ ~ ~ ~ ~ ~ ~8 VEGETATIVE STATE, AVOID PLANTING, OR CONTROL LARGE SHRUBS OR TREES THAT
' I COULD SHADE OUT HERBACEOUS SPECIES. DATE: 10-12-2004
~ SCALE: 1" = 10'
~ ....._._..~.~.~I 1 JOB N0. 1061-02.30
I l
I i ~ DRAWN BY: DLP
i r
CHECKED BY: WTO
R s V ~ - - I
SHEET GRAPHIC SCALE
10 o s 10 so
4 s o P'n PD~ I 1 inch = 10 ft.
i OF 15
0 FINAL DRAPING - NOT RELEASED FOR CONSTRUCTION

These drawings are instruments
of service and os such remain the property of the engineer,
EX. LOT TABLE Na copies or reproductions of ~ these drawings are permitted
,i ~ 1 ~ i / / 17 ~ ~ ~ without consent of the engineer. LOT OWNER DEED BOOK PLAT BOOK TAX MAP PIN U~on completion of the work
- ~ ~ _ - ~ , - e~ ~ ~ I ~ I ~ - - ~ ~ w~~- ~ / / ~ I ~ ~ i ~ G a~ ~ l 9 LISA SHPRITZ 2671 891 6A 83 755-01-022 0813-03-31-4747 all drawings(except the contract
~ ~ ~ c5° H ORY ~ 2 ~ h 25" H ORV / \ 11 RANDALL BRADY 1804/756 6 83 755-01-020 0813-03-31-4810 copies) .are to be returned to 13 EXCELNAMICS, INC. 2313/703 6/83 755-O1-006 0813-03-31-2865 tha engineer.
~ ~ ~ "5 ~gI ,P~'~S / 1 „MAP ~ / / 1 x' , - 8 LE / ~ / ~ ~ ~ -22 p ~ ~ / \ 17 RAY TILLY 1374/386 108/103 755-01-079 0813-03-32-0155 Copyright © 2003
i 486 ~ ~ ~ P ~5,0~ ~ ~ / / ~ ~ - - - - ~ ~ 18 BRIAN GOOCH 2255/298 6/83 755 01 005 0813 03 31-2934 ~ , 21 SOUTHERN REPAIR SERVICE 1207/787 755_01_004 0813_03_32_2065
~ ~ y ~ ~ F ~ - ~ ~ / / ~ - ' ~Q~ ~ ~ ~ , ~ 486 ~,a~ 1, S~~ % ~ ~ I 1207 787 755 01 003 0813 03 32 2130 1 23 SOUTHERN REPAIR SERV CE /
~ ~ 39 TALLY HO FARMS, INC. 2979/610 755-01-021 0813-03-31-2645 \ / 41 RANDALL BRADY 2037/240 6/83 755-01-019 0813-03-31-2609
~ - , ' ~ / i \ 2" SWEET GU ~ ~ i ~ ~ 43 RANDALL BRADY 2037 240 6 83 755-01-019 0813-03-31-2609 / ` / /
_ __4___~~ FRAME \ - _ _ - . ' ~ l ~ GARAGE ~ ~ \ 44 EXCELNAMICS, INC. 2313/703 6/83 755-01-006 0813-03-31-2865 ~ 46 BRIAN GOOCH 2255/298 6/83 755-01-005 0813-03-31-2934
- ~ , a84 ~11` BU LDING \ I ~ ~ / \ 50 SOUTHERN REPAIR SERVICE 6 83 755-01-007 0813-03-32-1001 / ~
~ \ 51 JACK LVELY 2285/853 6/83 755-01-0078 0813-03-31-0922 / 2~ o \ 53 JACK LIVELY 1321/624 6/83 755-01-007A 0813-03-21-9997
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These drawings are instruments
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- - ~ ~ 1~-~~ j i ~l ~ ' ~ ii ~ ~ i / ~ 17 ~ ~ ~ ~ ~ i E~' ~ ~I EX. LOT TABLE the property of the engineer, ~ No copies or reproductions of these drawings are permitted
i v ~ ~ r ~ l ( I i~ \ ,a i ~ ~ ~ I LOT OWNER D ED BOOK PLAT BOOK TAX MAP PIN without consent of the engineer. 9 LISA SHPRITZ 2671 891 6A 83 755-01-022 0813-03-31-4747 Upon completion of the work
~ ORY / \ 11 RANDALL BRADY all drawings except the contract 1804/758 6 83 755-01-020 0813-03-31-4810 copies) are to be returned to
e~ ~ ~ ~ I ~ / ~ ~ / ~ ~ 0~ ~ 2 ~ 18' MAPLE I / \ i / \ 13 EXCELNAMICS, INC. 2313/703 6/83 755-01-006 0813-03-31-2865 the engineer. 17 RAY TILLY 1374/386 108/103 755-01-079 0813-03-32-0155
_ - _ / ~ - I A86 ~ ~ ~ ,00 ~ ~ / I ~ ~ i ~ ` 18 BRIAN GOOCH 2255 298 - - _ _ Cop ri ht c 2003 / 6/83 755 01 005 0813-03 31 2934 y g ~
~ i ~ - 466 G~ ~ ~ I ~ 1 21 SOUTHERN REPAIR SERVICE 1207/787 755-Ot-004 0813-03-32-2065 ~ ~ 23 SOUTHERN REPAIR SERVICE 1207/787 755-01-003 0813-03-32-2130
y'"~~ ~ - i . - ~ i ~ 39 TALLY HO FARMS, INC. 2979/610 755-01-021 0813-03-31-2645
~ ~ / ~ ~ \ 2" SWEET GU I ~ ~~1~ ~ ~ i ~ 41 RANDALL BRADY 2037/240 6 83 755-01-019 081 - - - ` / 3 03 31 2609 1 1 43 RANOALL BRADY _ ~ ~ 2037/240 6/83 755-01 019 0813-03-31-2609
- - 4---~ ~ ~ ( FRAME \ I I _ , r ~ - a "i BU LDING ~ ~ 1 \ GARA~ E f I ~ 44 EXCELNAMICS, INC. 2313/703 6/83 755-01-006 0813-03-31-2865
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~ ~ / ~ \ l <v~ ~ ' ~ ' 46~- - _0-- / I ~ / 2~ ~ 51 JACK LIVELY 2285/853 6/83 755-01-0078 0813-03-31-0922 ~
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SHEET
OF

NCDENR
North Carolina Department of Environment and Natural
Division of Water Quality
Michael F. Easley, Governor
January 4, 2005
J
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Road, Suite H-106 l
Durham, NC 27705
Subject Property: Stoneybrook Cottages Phase II Subdivision
APPROVAL OF STORM WATER MANAGEMENT PLAN
Dear Mr. Stewart:
Resources
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
DWQ Project # 03-0728
Durham County
The Division of Water Quality (DWQ) has reviewed the Storm Water Management Plan prepared by your
engineer, Mr. William T. O'Daniel, P.E., of Duane K. Stewart and Associates, Inc., and the additional
information received December 28, 2004. This Plan satisfies the Conditions of the 401 Water Quality
Certification issued on September 4, 2003.
The structural storm water practices as approved by this Office as well as drainage patterns must be
maintained in perpetuity. No changes to the structural storm water practices shall be made without
written authorization from the Division of Water Quality. Storm water easements shall be recorded for a
distance of at least 10 feet on each side of all storm water conveyances on all lots containing these
structures including future access for maintenance. The storm water easements shall allow for the ability
to maintain the structures, perform corrective actions as described above and shall provide protection of
the structures from potential alternations by future property owners.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act. If you have any questions, please telephone Cynthia Van Der Wiele, Ph.D. at 919.715.3473.
Sincerely,
Cyn i Bell Karoly, Program Manager
401 Oversite, Express Review Program
CBK/cvdw
cc: DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
William O'Daniel, Duane K. Stewart & Assoc., Inc., 3715 University Dr., Durham, NC 27707
Filename: 030728StoneybrookCottagesPhaseH (Durham)StormApprov.doc
401 Wetlands Certification Unit
650 kftd "" Ctnlef' Raleigh, North Carolina 27699.1650 - One
M lfaktree Boulevard, Suite 250, Raleigh, North Carolina 27604 NofthCarohna
Phone: [phone] /FAX [phone]/ Internet: http://h2o.enr.staie.nc.us/ncwetlands Nahmally
0 An Equal OpportumtylAffirmative Action Employer 500/a Recycled/10 /o Post Consumer Paper

Project Name: Stoneybroo W/L 1
Project No. DWQ 030728
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations

Permanent Pool (ft) 443 3
Temporary Pool (ft) 447 4 ft. depth ok
areas
Permanent Pool SA (sq ft) 5648 5401 sq. ft. ok
Drainage Area (ac) 7.33
Impervious Area (ac) 2.86 39.0 % -
Forebay (ft2) 1029 18.218839 % check forebc
High Marsh (ft2) 3170 56.1 % check marsh
Low Marsh (ft2) 2478 43.9 % . ' ° check marsh
Micropool (ft2) 830 14.695467 % ok
132.9143 %
volumes
Temporary Pool (cu ft) 27791 10674 cu. ft. ok
other parameters
SA/DA 1.7 1.69°' -
Orifice Diameter (in) 1.5 0.08 cfs drawdown -
Design Rainfall (in) 1 3.9 day drawdown , ok
Linear Interpolation of Correct SAIDA"*
OX Impervious
Next Lowest 30
Project Impervious 39.0
Next Highest 40
3 ft. Permanent Pool Depth
SA/DA from Table
1.34
1.69
1.73
Duane K. Stewart
& ASSOCIATES, INC.
CONSULTING
ENGINEERS
Civil • Sanitary
Environmental
Planning • Design
Survey
3715 University Drive
Durham, NC 27707
[phone]
fax [phone]
e-mail.- [e-mail]
www.dksa-tsi.com
December 23, 2004
Ms Cyndi Karoly
NC DENR
DWQ 401 Wetlands Certification Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
RL ti
DEC 2 D
2004
DFNR - WATER SAND STDA Qjj
R B H
SUBJECT: Stoneybrook Cottages Phase II (03-0728) - Response to Comments
Dear Ms. Karoly,
This letter is in response to your letter dated December 16, 2004. We are very
disappointed that we have not been able to get you to respond to the fax we sent
on November 15, 2004. We have called Cynthia Van Der Wiele several times
and left messages but have received no response, until we received this letter
which doesn't address our concern we asked about with the fax.
We have responded to your comments on Wetland #2 as follows:
1. The signed and notarized Operation and Maintenance Agreement for
the stormwater facilities are included with this submittal.
2. A completed worksheet for the BMP is included with this submittal.
3. We have added a channelized flow pattern to the wetland bottom to
prevent short circuiting of the flow. This is the issue we tried to
address prior to re-submitting. With the channelized flow, the length
to width ratio exceeds 3:1.
If you have any questions, please do not hesitate to contact me.
Sincerely,
Duane K. Stewart and Associates, Inc.
A&;,-*7 -r- 90----P
William T. O'Daniel, PE
Project Manager

Michael F. Easley, Governor
{ William G. Ross Jr., Secretary
North Carolina` .partment of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
September 4, 2003
DWQ# 03-0728
Lif d Durham County
DEC 2 2004
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Rd., Suite H-106- DENR -WATER QUALITY
Durham,.NC, 277051NDSANOSTORMVygJERBRANCFI
APPROVAL.of 401" Water Quality Certification and Neuse River Buffer Rules With Additional Conditions
Dear Mr. Stewart:
4 You have our approval, in accordance with the attached conditions, to place pernianent fill in 32 linear feet of perennial
streams and 0.21 acre of protected Neuse Buffers in order to construct the Stoneybrook Cottages Phase 11 Subdivision in
Durham County, as described in your application received by the Division of Wat'e'r Quality on June 16,2003, and in
additional correspondence received July 29,. August 21, and September 4, 2003. After reviewing your application, we have
determined that this fill is covered by General Water Quality Certification Number 3402, which can be viewed on our web
site at httpJ/h2o enr.state.nc:us/ncwetlands. This Certification allows.you to use Nationwide Permit Number 39 when it is
issued by the U.S. Army Corps of Engineers. This approval is also valid for the Neuse River Buffer Rules (15A NCAC 213
.0233). In addition, you should get any other,federal, state or local permits before you go ahead with your project including
(but not limited to) Sediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. Also this
approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification:
This approval is only valid for the purpose and design that you described in your application. If you change your
:project, you must notify us in writing and you may be required to send us a new application} for a new certification. If the
property is sold, the new owner must be given a copy of the Certification and approval letter and!is:thereby responsible for
complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre; compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the .
conditions listed in the attached certification, as well as the additional condition listed below:
1. Deed notifications or similar mechanisms shall be placed on all. lots. with. remaining jurisdictional wetlands and waters or
areas within 50 feet of all streams and ponds on the property. These mechanisms shall be put iii place within 30 days of
the date of this letter or the issuance of the 404 Permit (whichever is later). A sample deed notification format can be
downloaded from the 401Metlands Unit web site at http://h2o.enr,state.no.ustncwetlands ;
2The culverts required for this project shall be installed in such a manner that the original stream profiles are not altered
(i.e. the depth of the channel must not be reduced by a widening of the streambed). Existing stream dimensions
(including the pattern and profile) are to be maintained above and below locations of each culvert. The culverts shall be
designed and installed to allow for aquatic life movement as well as to prevent head cutting of the streams. if any of the
existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a
perched manner, the pipes shall be removed and re-installed correctly.
The Applicant must submit a plan and receive written approval from this Office to address any head cutting that will
occur as a result of this project (e.g., use of cross vanes downstream of the culvert).
Use of native vegetation and other soft stream bank stabilization techniques must be used where practicable instead of
rip rap or other bank hardening methods; If rip-rap is necessary, it shall not be placed in the stream bed, unless
specifically approved by the Division of Water Quality;
3. An additional condition is that all constructed stormwater conveyance outlets shall be directed as diffuse flow at non-
erosive velocities through the protected stream buffers such that it will not re-concentrate before discharging into a
stream as identified within 15A NCAC 213.0233 (5);
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone] Customer Service
1 800 623-7748
r
4. An additional condition is that a 'trial, written stormwater management plan btiall be approved in writing by this Office
before the impacts specified in this Certification occur per condition no. 3 in General Certification 3402. The stormwater
management plan must include plans and specifications for stormwater management facilities that are appropriate for
surface waters classified as Class C and deigned to remove 85% TSS according to the most recent version of the NC
DENR Stormwater Best Management Practices Manual. These facilities must be designed to treat the runoff from the
entire project, unless otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building
is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the
stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as
approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural
stormwater practices shall be made without written authorization from the Division of Water Quality,
5. You are required to return the attached Certification of Completion form to notify DWQ when all work included in the 401
Certification has been completed.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act
within 60,days of the date that you receive this letter. To ask for a hearing, send a written petition which conforms to
Chapter 150B of the Noah Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing.
Thls-letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have
any questions, please telephone Steve Mitchell In. the DWQ Raleigh Regional Office at [phone] or Cyndi Karoly in
the-Centrai;Office-in Raleigh 919-733-9721.
Sincerely,
.4?
Alan W. Klimek, P.E.
AWK/cbk
Attachments

cc: Corps of Engineers Raleigh Regulatory Field Office
'Raleigh DWQ Regional Office
? : Central Files -
File Copy
John Schrum, 3715 University Drive, Durham, NC, 27707
030728
DWQ Project No. 03-0728
DIVISION OF WATER QUALITY - 401 EXTENDED DETENTION (and POCKET) WETLAND WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: Stoneybrook Cottages Phase II
Contact Person: William T. O'Daniel, PE Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet applies to: Wetland Pond #2
Permanent Pool Elevation 443 ft. (elevation of the orifice invert out)
Temporary Pool Elevation 447, ft. (elevation of the outlet structure invert in)
Permanent Pool Surface Area 5 , 848 sq. ft. (water surface area at permanent pool elevation)
Drainage Area 7.33 ac. (on-site and off-site drainage to the basin)
Impervious Area 2.86 ac. (on-site and off-site drainage to the basin)
Forebay Surface Area 1,029 sq. ft. (at permanent pool elevation approximately 15%)*
Marsh 0"-9" Surface Area -1,170 sq. ft. (at permanent pool elevation approximately 35%)*
Marsh 9"-18" Surface Area 2,478 sq. ft. (at permanent pool elevation approximately 35%)*
Micro Pool Surface Area 830 sq. ft. (at permanent pool elevation approximately 15%)*
Temporary Pool Volume 27,791 cu. ft. (volume detained on top of the permanent pool)
SAIDA used 1.70 (surface area to drainage area ratio)*
Diameter of Orifice 1,i 5 in. (draw down orifice diameter)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project
Applicants Initials
t! > t O The temporary pool controls runoff from the 1 inch rain.
wyo The basin side slopes are no steeper than 3:1.
(21,71 -0 A planting plan for the marsh areas with plant species and densities is provided.
I,AAro Vegetation above the permanent pool elevation is specified.
k/A, An emergency drain is provided to drain the basin. ws7 i.aw u
u pro The temporary pool draws down in 2 to 5 days.
U/" Sediment storage is provided in the permanent pool.
14 /A A sediment disposal area is provided. T o t3ri H&OLS p Df r-SITE
t APT O Access is provided for maintenance.
Ltno A bite specific, signed and notarized operation and maintenance agreement is provided.
W`re The drainage area (including any offsite area) is delineated on a site plan.
UJYO Access is provided for maintenance.
[.A/No Plan details for the wetland are provided.
1 A -TO Plan details for the inlet and outlet are provided.
'„ ./-%-,-- A site specific operation and maintenance agreement, signed and notarized by the responsible party is provided (see
http://h2o.ehnr.state.nc.us/ncwetlands/0andm.doc).
* Pocket Wetlands have different design parameters and are only assumed to remove 35% TSS - See pp. 19 and 20 of the NC DENR
Stormwater BMP Manual, April 1999.10% open water, 50% high marsh, 40% low marsh.
LTIMA
NCDENR
'North Carolina Department of Environment and Natur R ce ED
Division of Water Quality
Michael F. Easley, Governor Willia o Jr., SecYa
Alan W. Klimek, P.E., DiDecember 16, 2004
DWQ Project # 03-0728
Durham County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ryan D. Stewart RECEIVED
Stelic Enterprises, Inc. DEC 2 2 2004
6101 Guess Road, Suite H-106
Durham, NC 27705 DUANE K. STEWART & ASSOC,
Subject Property: Stoneybrook Cottages Phase H Subdivision
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
On November 15, 2004, the Division of Water Quality (DWQ) received a fax in regard to the Storm
Water Management Plan prepared by your engineer, Mr. William T. O'Daniel, of Duane K. Stewart and
Assoc., Inc. The Storm Water Management Plan is required in order to comply with Condition 4 .of the
401 Water Quality Certification issued last year on September 4, 2003.
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). The following items were not included:
¦ Signed and notarized Operation and Maintenance Agreement for the stormwater facilities.
¦ Completed worksheet for each stormwater management facility (BMP worksheets).
¦ Please re-design location of the inlet or outlet of the extended detention wetland to eliminate potential
short-circuiting.
The stormwater BMP worksheets can be found on the 401 Oversite/Express Review Website
aLttp://h2o.enr.state.nc.us/iicwetla.nds/mitresto.html). Please submit one original and two photocopies of
the information requested above.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Ms. Cynthia Van Der Wiele at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
Cyndi B. Karoly
DWQ, Wetlands / 401 Unit
CBK/cvdw
cc: DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
William O'Daniel, Duane K. Stewart & Assoc., Inc., 3715 University Dr., Durham, NC 27707
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650 One
7, 7
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NOl L11Carohna.
Phone:[phone]/FAX[phone]/Internet:httrr//h2o.enr.state.nc.us/ncwetiands
An Equal Opportunity/Affirmative Action Employer- 50% Recvcled/100% Post Consumer Paoer NatMAJI&
. , WETLAND DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wetland detention basin system is defined as the wetland detention basin, pretreatment including forebays
and the vegetated filter if one is provided.
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet [wetland] detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed..-.
2. Repair eroded areas immediately, reseed as necessary to maintain good vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wetland detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wetland detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it wili„give'an accurate
depth reading and not readily penetrate into accumulated sediments.
For stormwater wetlands: If the elevation of the marsh areas exceed the permanent pool elevation, the
sediment should be removed to design levels. This shall be performed by removing the upper 6 inches of
soil and stockpiling it. Then the marsh area shall be excavated six inches below design elevations.
Afterwards the stockpiled soil should be spread over the marsh surface. The soil should not be stockpiled
for more than two weeks.
When the permanent pool depth reads 3.5 feet in the forebay and micro-pool, the sediment shall be
removed.
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. Wetland
planting densities in the marsh areas should be maintained by replanting bare areas as needed. Wetland
plants should be encouraged to grow in the marsh areas.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wetland detention basin system shall be maintained in good working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained every six months. All
accumulated sediment and debris shall be removed from the structure, and a level elevation shall be
maintained across the entire flow spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Page 1 of 2

Print name: Iran D. Stewart
Title: Owner
Address: Stelic Enterprises 3101 Guess Road, Suite G104, Durham, NC 27705
Phone: [phone] -
Signature:
Date:
t
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
I, _K V-vIa a Notary Public for the State of yAc p_-M
County of Pf 2sari , do hereby certify that &,fVA A -0. s-Mwp,9_-T
personally appeared before me this ZLF-P day of N av£?,??vL , zoc0- , and acknowledge the due
execution of the forgoing wetland detention basin maintenance requirements. Witness my hand and official
seal,
Syr,
"Olb
pUBLV? ?ry

SEAL
My commission expires 6--Ze -O(o
Page 2 of 2
STONEYBROOK COTTAGES PHASE II
Storm Water Wetland #2 Design
1061-02.40
ba
Site Location:
West Side of Cole Mill Road at Stoneybrook Drive
Prepared by:
Duane K. Stewart and Associates, Inc.
3715 University Drive
Durham, North Carolina 27707
En ineer:
William T. O'Daniel, PE
Date: October 12, 2004
Revised: December 22, 2004
DURHAM City of Durham
Public Works Department
Stormwater Services Divisions
8 6 9 101 City Hall Plaza, Durham, North Carolina, 27701
CrrY'OF MEDICINE Telephone [phone] FAX [phone]
Wet Detention Pond Design Summary
Stormwater Management Construction Plan Review:
A complete stormwater management construction plan submittal includes a wet detention pond design
summary for each pond, design calculations, plans and specifications showing pond, forebay, inlet and outlet
structure details.
1. PROJECT INFORMATION
Project Name: _Stoneybrook Cottages Phase II Phase
Tax Map Number: 755-01-016 Case #: D04-203
Design Contact Person: William T. O'Daniel, P. E. Phone #: ( 919 ) 490-2999
Legal name of owner: Stelic Enterprises, Inc.
Owner contact: Ryan D. Stewart Phone #(_919)__291-4873
Owner Address: 4 Ch_ppers Way. Durham. North Carolina
Deed Book _4122_Page # 280 or Plat Book Page#
For projects with multiple basins, specify which pond this worksheet applies to:
Does the proposed pond also incorporate stormwater detention? Yes' No
Detention provided for: X 1-year X 2-year X 10-year other
Elevations
Pond bottom elevation 440
Permanent pool elevation 443
Temporary pool elevation 447
1-year storm orifice/weir elevation 443
1-year storm water surface elevation 446.51
2-year storm orifice/weir elevation 443
2-year storm water surface elevation 447.06 _
10-year storm orifice/weir elevation 443
10-year storm water surface elev. 447.57
Emergency spillway elevation 447.50
Top of embankment/dam 448.25
Maximum water surface elevation 447.98
ft. (floor of the pond)
ft. (invert elevation of the orifice)
ft. (elevation of the discharge structure overflow)
ft. (invert elevation)
ft.
ft. (invert elevation)
ft.
ft. (invert elevation)
ft.
ft. (invert of emergency spillway)
ft. (elevation)
ft. (from max. storm pond can safely pass)
Depth from design storm to
Lowest orifice elevation 4.57 ft.
Areas
Permanent pool area provided 5438 sq. ft. (water surface area at the orifice elevation)
Minimum required perm. pool area 5420 sq. ft. (calculated surface area required)
(March 2003)
Design storm surface area 8,137 sq. ft. (Sped frequency event.- 10 year)
Drainage area 7.33 - ac. (on-site and off-site drainage to the pond
Discharges (Specify only applicable frequency events 112110)
1-year 2-year 10-year
Predevelopment 12.34 - cfs 20.92 cfs 48.80 cfs
Postdevelopment w/o detention 22.87 cfs 35.51 cfs 72.99 cfs
With detention 12.25 cfs 20.53 cfs 47.15 cfs

Volumes
Permanent pool volume 5 .,543 cu. ft. (combined volume of main pond and forebay)
Temporary pool storage volume 27 791 cu. ft. (volume detained above the permanent pool)
Forebay volume 3,931 cu. ft. (approximately 20% of total volume)
Other parameters
SA/DA' 1.70 (from DWQ table)
Diameter of orifice 1.5 in. (must provide draw down over 2 to 5 day period)
Draw-down time 96 hrs
Depth of orifice below perm pool 0 in. (orifice inlet depth below permanent pool)
Design rainfall 1-yr.
Design TSS removal 85 % (minimum 85% removal required)
Footnotes:
1. When using the SA/DA tables from the Stormwater Best Management Practices Manual, linear
interpolation may be used for values between table entries.)
Riser/Principal and Emer,
1-year storm orifice/weir
2-year storm orifice/weir
10-year storm orifice/weir
100- year storm orifice/weir
Principal spillway
Emergency spillway
?ency Spillway Information
diameter 1.5 in.
diameter 1.5 in.
diameter 1.5 in.
diameter in.
diameter 48 in.
width 30 ft.
length ft.
length ft.
length ft.
length 30 ft.
side slopes 3:1 slope 2 %
H. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements. Initial in the space provided to indicate the following
design requirements have been met and supporting documentation is attached.
Applicant's initials
r U (I a. The permanent pool depth is between 3 and 6 feet (required minimum depth of 3 feet)
LA;1-0 b. The forebay volume is approximately equal to 20% of the pond volume.
U/To c. The temporary pool controls runoff for water quality design storm.
Lk)TO d. The temporary pool draws down in 2 to 5 days.
II /TO - e. Riprap outlet protection, if provided, reduces flow to non-erosive velocities (provide
calculations).
f. The pond length to width ratio is greater than 3:1.
ik7vO g. The pond side slopes above the permanent pool area are no steeper than 3:1.
(March 2003) -7 1 1
?A _ x-33
h. A submerged and vegetated shelf with a slope no greater than 6:1 is provided around the
perimeter of the pond (provide detail.)
El T© i. Vegetative cover above the permanent pool elevation is specified. No woody vegetation
is permitted on the embankment.
1J j. A surface baffle, trash rack or similar device is provided for both the overflow and
orifice. Flat top trash racks are not acceptable.
k. A recorded drainage easement is provided for each pond including access to the nearest
right-of-way.
1. If the basin is used for sediment and erosion control during construction, a note requiring
clean out and vegetative cover being established prior to use as a wet detention basin
shall be provided on the construction plan.
in. A mechanism is specified which will drain the pond for maintenance and emergencies.
Valves used shall be plug valves. M I ef.0FnIOL WILL c2e DRA.IN. n fay ti,+yup 19 N&5
sae-'f
LA;IQ n. Anti-floatation calculations are provided for riser structure.
yv-,-o o. A plan view of the pond with grading shown is provided.
p. A profile through the forebay, main pond and spillway is provided. Water surface
elevations are shown on the profile.
u,AQ q. Riser structure details are provided.
t k.,Tp r. Compaction specifications for the embankment are shown on the plan.
i,A O? s. A minimum of 10 feet has been provided for the pond embankment top width.
Consideration should be given to the use of anti-seep collars, filter diaphrams, anti-vortex devices, watertight
joints, clay core and cutoff trench.
Note: Executed Stormwater Facility Operation and Maintenance Permit Agreement, payment of permit fee
($2,000 per facility), and payment of surety are required prior to construction drawing approval.
(March 2003)
STONEYBROOK COTTAGES PHASE II
Storm Water Wetland #2
General Description
Stoneybrook Cottages Phase II is a proposed single-family home subdivision. It is
located on the west side of Cole Mill Road where Cole Mill Road intersects with
Stoneybrook Drive in Durham, North Carolina. Stoneybrook Cottages Phase II is an
extension of the existing Stoneybrook Cottages Phase I. The project is to consist of
single-family homes with appurtenant streets and utilities.
The project is located in the Neuse River basin but is not in a watershed protection
district. 85% TSS removal is required for this project to adhere to a 401 Water Quality
Certification.
10% Stormwater Rule and 1-Year Peak Flow Detention
Detention of the peak flow resulting from the 1-, 2- and 10-year rainfall events will be
provided. The majority of the runoff from the proposed land disturbance will be diverted
to the proposed stormwater wetland, which, in addition to 85% TSS removal and nitrogen
export reduction, will provide detention of the peak flow resulting from the 1-, 2-, and
10-year storm events below pre-development.
The design of the stormwater wetland is included with this report. An interior wall will
be utilized to provide volume for the wetland while keeping the grading of the wetland
entirely out of the surrounding Neuse Buffer.
Wetland Design
The stormwater wetland design adheres to the North Carolina Division of Water Quality
(NC DWQ) Best Management Practices (BMP) Manual. A level spreader is not included
in the design of the stormwater wetland. North Carolina DWQ does not require level
spreaders in cases where stormwater wetlands are utilized.
The wetland is also designed utilizing the City of Durham Reference Guide for
Development Wet Detention Pond Design Summary. This Design Summary is adapted
to the stormwater wetland.
The stormwater wetland detains the peak flow resulting from the 1-year storm event to
pre-development levels. The Summary of Results shows the pre- and post-development
peak flows resulting from the 1-year rainfall event. The Summary of Results also shows
the peak inflow and outflow, water surface elevation and freeboard to the top-of-berm
from the 1-, 10-, and 100-year rainfall events.
The proposed wetland consists of a forebay located at the point of discharge for the storm
drainage system that collects stormwater from the wetland watershed. This forebay is 3
feet deep to accommodate mosquito fish. The forebay will allow sediment to accumulate
and prevent the sediment from overloading the remainder of the wetland where shallow-
water vegetation will be planted. A micropool is present at the riser of the outlet
structure. The micropool will accommodate mosquito fish and it will assist in keeping
the 1.5-inch diameter outlet orifice clear of debris.
The primary outlet structure is a 15-inch diameter barrel with a 4-foot diameter precast
manhole riser. The 15-inch diameter barrel is 62-feet long. This riser-barrel structure
serves as the primary spillway and the 30-foot long weir outlet serves as the emergency
spillway. The stormwater wetland outlet structure and the emergency weir outlet passes
the runoff resulting from the 100-year rainfall event without overtopping the berm. The
water surface elevation resulting from the runoff of the 100-year rainfall is 447.98 feet
and the top of berm elevation is 448.25 feet.
The interior of the wetland has been graded such that the majority of the wetland will be
between 3" - 9". A small, 9" deep channel will travel from the forebay at the pond inlet
to the micropool at the outlet of the pond. This channel will be created such that it flows
circuitously through the wetland. This will increase the residence time of water in the
wetland, and it will provide a large amount of 3" - 9" surface area for shallow-water
vegetation to propagate.
A planting plan is included with the construction plans that includes vegetation approved
by City of Durham Stormwater Services. The planting plan includes three zones: shallow
water (3" - 12"), deep water (greater than 12") and "Shallow Land Species". The
wetland is divided into zones, which correspond to the above depths. A list of required
plants and the number of each plant is then listed for each zone.
Methodology
¦ On- and off-site topography is from City of Durham GIS Aerial Topography
(1999).
¦ Rainfall is from NOAA Technical Memorandum NWS HYDRO-35 (June, 1977).
¦ Time of concentration is determined using the SCS Segmental Approach.
¦ Flow calculations are performed using HEC-HMS Version 2.2.2. Within HEC-
HMS, the SCS Method is used to generate flows. SCS Curve Numbers are based
upon Hydrologic Soil Group `B'. Hydrologic Soil Groups are based upon the
classification of the soils, which is determined using Durham County Soil Survey,
Sheet 16.
Routing of the stormwater wetland is also conducted using HEC-HMS Version
2.2.2. A stage-storage rating curve is generated using the `average-end-area'
method to generate an equation in the form of S = KSzb where S is the storage
volume (ft), z is the water surface elevation, and KS and b are multipliers based
upon a `power' fit in Microsoft Excel. A stage-discharge curve is generated
using widely accepted empirical equations for discharge. Flow from the primary
outlet structure is based upon the least (controlling) flow from each potential type
of flow including riser as weir, riser as orifice, barrel under headwater control and
barrel under tailwater control. The riser as weir equation is:
Q = CWLH3/2
where Q is the flowrate (cfs)
Cam, is the weir coefficient (3.0 for broadcrested weir)
L is the length of the weir (Circumference of riser, 70pipe, ft)
H is the difference between the current water surface elevation and
the crest of the riser (ft).
The riser as orifice equation is:
Q = CdA(2gH)"2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge (0.59)
A is the surface area of the riser opening ((a/4)(D/l2)2, ft2)
g is the acceleration due to gravity (32.2 ft/sec2)
and H is the difference between the current water surface elevation and
the crest of the riser (ft).
The barrel headwater control equation is broken into two steps. For a water
surface elevation that is above the invert of the barrel but below the crown of the
pipe, the equation is:
Q = 0.372CdDpipeH3/2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge
Dpipe is the diameter of the barrel (inches)
H is the difference between the current water surface elevation and
the upstream invert of the barrel (ft).
The second step of the barrel headwater control (orifice) equation begins at the
crown of the pipe. The equation for flow then becomes:
Q = 0.0437CdD2(Z - (D/24) - Zi)"2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge
D is the pipe diameter (inches)
Z is the current water surface elevation (ft)
and Z; is the starting water surface elevation (ft).
The equation for tailwater control is based upon the energy equation:
Q = square root (((D4/522)(Z - Zb))/(((5096Ln)/D1.33) + Ke))
where Q is the flowrate (cfs)
D is the pipe diameter (inches)
Z is the current water surface elevation (ft)
Zb is the downstream water surface elevation (ft)
L is the length of pipe (ft)
n is the Manning's `n' value of the pipe
and Ke is the aggregate loss coefficient.
The smallest calculated flow rate of the four above options is the controlling flow,
and the one that is reported in the stage-discharge function. This flow is added to
the weir flow, if the weir exists and has been activated. The equation for weir
flow is:
Q = CWLH31
where Q is the flow (cfs)
CW is the weir coefficient (assumed to be 3.0 for broadcrested weir)
L is the length of the weir
and H is the water surface elevation above the crest of the weir.
The stage-storage and stage-discharge relationships are then input into the HEC-
HMS reservoir model, which routes the basin using the Storage-Indication
Method.
Other aspects of the stormwater wetland design, including surface area, volume,
and drawdown time, are based upon NC DWQ BMP Manual (April, 1999).
NC DWQ Wetland and Detention Basin Design Summary of Results
Summary of Results
I-Year Storm Flow Analysis
(City of Durham I -Year Detention Per Neuse Nitrogen Regulations)

Basin Predeveloped 1-Year
Discharge Postdeveloped 1-
Year Discharge
% Increase
# [cfs] [cfs]
1-1 12.34 12.26 -0.6%
1-2 12.38 12.33 -0.4%
Note: All other discharges are per the approved stormwater impact analysis.
Wetland #2 Design Summary
Water Quality Design Summary
William T. O'Daniel, P.E.
12/22/2004
Drainage Area to Wetland = 7.33 acres
Impervious Area to Wetland = 2.86 acres
% Impervious = 39.0%
Surface Area Required = 5420 sf
Surface Area Provided = 5438 sf
PVC Inverted Siphon Size = 1.5 inches
Drawdown Time = 3.65 days
Routing Design Summary
Top of Berm Elev. = 448.3 ft
Return
Period
Peak Inflow Peak
Outflow
WSE
Freeboard
[years] [cfs] [cfs] [ft] [ft]
1 10.677 0.11 446.51 1.74
2 15.054 0.77752 447.06 1.19
10 25.946 12.931 447.57 0.68
100 42.898 41.859 447.98 0.27
Duane K. Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Pre-development
1. Determine Hydrologic Soil Groups
Soil Abbreviation Soil Name Hydrologic Soil Group
ApB Appling B
ApC Appling B
GeC Georgeville B
GeB Georgeville B
HrB Herndon B
HrC Herndon B
TaE Tatum C
- The majority of the soils in the watershed are of Hydrologic Soil Group 'B'.
HSG 'B' for purposes of determining SCS Curve Numbers.
H. List SCS Curve Numbers for Specific Cover Conditions

Cover Condition HSG 'B' SCS
Curve Number
Comment
Impervious 98
Open 61 Assume'good' condition
Wooded 55 Assume'good' condition
M. Pre-development Area, SCS Curve Number and Time of Concentration
Drainage Point 41-1 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.00
Onsite Open 0.90
Onsite Wooded 3.49
Offsite Impervious 4.49
Offsite Open 3.59
Offsite Wooded 9.89
Total Area = 22.36
0.0349
Acres
sq. miles
Composite SCS Curve Number = 64.8
SCS Lag = 7.57
minutes
Drainage Point #1-2 (HSG 'B'):
Cover Area
Condition [acres]
Onsite Impervious 0.27
Onsite Open 0.47
William T. ODaniel, P.E.
10/12/2004
Duane K Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Pre-development
Onsite Wooded 4.31
Offsite Impervious 5.23
Offsite Open 4.19
Offsite Wooded 11.53
Total Area = 26.00
0.0406
Composite SCS Curve Number = 65.2
Acres
sq. miles
SCS Lag = 10.96 minutes
William T. ODaniel, P.E.
10/12/2004
Duane K Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Post-development
1. Determine Hydrologic Soil Groups
Soil Abbreviation Soil Name Hydrologic Soil Group
ApB Appling B
ApC Appling B
GeC Georgeville B
GeB Georgeville B
HrB Herndon B
HrC Herndon B
TaE Tatum C
- The majority of the soils in the watershed are of Hydrologic Soil Group 'B'. Use
HSG'B' for purposes of determining SCS Curve Numbers.
H. List SCS Curve Numbers for Specific Cover Conditions

Covet Condition HSG 'B'
SCS Curve Number
Comment
Impervious 98
Open 61 Assume 'good' condition
Wooded 55 Assume 'good' condition
M. Post-development Area, SCS Curve Number and Time of Concentration
Drainage Point #14 - To Wetland (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 2.86
Onsite Open 2.71
Onsite Wooded 0.00
Offsite Impervious 0.40
Offsite Open 0.76
Offsite Wooded 0.60
Total Area = 7.33 Acres
= 0.0115 sq. miles
Composite SCS Curve Number = 77.0
SCS Lag = 7.57 minutes
William T. ODaniel, P.E.
10/12/2004
Duane K. Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Post-development
Drainage Point #1-1- Wetland Bypass, Sub-basin #1 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.25
Onsite Open 0.20
Onsite Wooded 3.35
Mite Impervious 4.29
Mite Open 3.29
Mite Wooded 9.72
Total Area = 21.10
= 0.0330
Composite SCS Curve Number = 65.2
SCS Lag = 7.57
Drainage Point #1-2 - Wetland Bypass, Sub-basin #2 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.00
Onsite Open 0.48
Onsite Wooded 0.00
Mite Impervious 5.03
Mite Open 4.23
Offsite Wooded 11.10
Acres.
sq. miles
minutes
Total Area = 20.84 Acres
0.0326 sq. miles
Composite SCS Curve Number = 66.7
SCS Lag = 9.96 minutes
William T. UDaniel, P.E.
10/12/2004
Duane K. Stewart and Associates, Inc.
HEC-HMS Project Stoneybrook Phase II Basin Model:

HMS Summary of Results
Project Stoneybrook Phase II Run Name : 1-Yr Pre
Start of Run 04MayO4 1200 Basin Model Pre-development
End of Run 05MayO4 1200 Met. Model 1-Year SCS Type II
Execution Time IONovO4 1601 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
.Drainage Point 1-1 12.340 05 May 04 0003 0.92327 0.035
Drainage Point 1-2 12.383 05 May 04 0006 1.1045 0.041
HMS * Summary of Results
Project Stoneybrook Phase II Run Name : 1-Yr Post
Start of Run 04MayO4 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 1-Year SCS Type II
Execution Time IONovO4 1656 Control Specs 1 Minute dT
Hydrologic Discharge Time of volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
DP 1-1 To WQ Pond 10.677 05 May 04 0002 0.65458 0.012
Wetland #2 0.11000 05 May 04 0844 0.10125 0.012
DP 1-1 Pond Bypass 12.195 05 May 04 0003 0.89970 0.033
DP #1-1 12.255 05 May 04 0003 1.0009 0.044
DP 1-2 Pond Bypass 12.334 05 May 04 0005 0.98976 0.033
DP #1 24.285 05 May 04 0004 1.9907 0.077
HMS * Summary of Results for Wetland #2
Project : Stoneybrook Phase II Run Name : 1-Yr Post
Start of Run 04May04 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 1-Year SCS Type II
Execution Time 10Nov04 1656 Control Specs 1 Minute dT
Computed Results
Peak Inflow 10.677 (cfs) Date/Time of Peak Inflow 05 May 04 0002
Peak Outflow 0.11000 (cfs) Date/Time of Peak Outflow : 05 May 04 0844
Total Inflow 1.07 (in) Peak Storage 0.S5345(ac-ft)
Total Outflow 0.17 (in) Peak Elevation : 446.51(ft)
HMS * Summary of Results
Project : Stoneybrook Phase II Run Name : 2-Yr Pre
Start of Run 04MayO4 1200 Basin Model Pre-development
End of Run 05MayO4 1200 Met. Model 2-Year Frequency
Execution Time 1ONovO4 1601 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
Drainage Point 1-1 20.921 05 May 04 0011 1.4747 0.035
Drainage Point 1-2 21.291 05 May 04 0015 1.7557 0.041
HMS * Summary of Results
Project Stoneybrook Phase II Run Name : 2-Yr Post
Start of Run 04MayO4 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 2-Year Frequency
Execution Time IONovO4 1659 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
DP 1-1 To WQ Pond 15.054
Wetland #2 0.77152
DP 1-1 Pond Bypass 20.455
DP #1-1 20.525
DP 1-2 Pond Bypass 20.195
DP #1 40.128
05 May 04 0010 0.92070 0.012
05 May 04 0258 0.28206 0.012
05 May 04 0011 1.4292 0.033
05 May 04 0011 1.7112 0.044
05 May 04 0013 1.5426 0.033
05 May 04 0012 3.2538 0.077
HMS * Summary of Results for Wetland #2
Project : Stoneybrook Phase II Run Name : 2-Yr Post
Start of Run : 04May04 1200 Basin Model : Post-development
End of Run 05May04 1200 Met. Model 2-Year Frequency
Execution Time 10Nov04 1659 Control Specs 1 Minute dT
Computed Results
Peak Inflow 15.054 (cfs) Date/Time of Peak Inflow 05 May 04 0010
Peak Outflow 0.77752 (cfs) Date/Time of Peak Outflow 05 May 04 0258
Total Inflow 1.50 (in) Peak Storage 0.64739(ac-ft)
Total Outflow 0.46 (in) Peak Elevation : 447.06(ft)
HMS * Summary of Results
Project Stoneybrook Phase II Run Name : 10-Yr Pre
Start of Run 04MayO4 1200 Basin Model Pre-development
End of Run 05MayO4 1200 Met. Model 10-Year Frequency
Execution Time IONovO4 1601 Control Specs 1 Minute dT
Hydrologic Discharge Time of volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
Drainage Point 1-1 48.802 05 May 04 0010 3.5172 0.035
Drainage Point 1-2 50.001 05 May 04 0014 4.1550 0.041
HMS * Summary of Results
Project : Stoneybrook Phase II Run Name : 10-Yr Post
Start of Run 04MayO4 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 10-Year Frequency
Execution Time IONovO4 1659 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
DP 1-1 To WQ Pond 25.946 05 May 04 0009 1.8012 0.012
Wetland #2 12.931 05 May 04 0021 1. r 1606 0.012
DP 1-1 Pond Bypass 47.043 05 May 04 0010 3.3815 0.033
DP #1-1 47.153 05 May 04 0010 4.5421 0.044
DP 1-2 Pond Bypass 44.786 05 May 04 0013 3.5470 0.033
DP #1 90.746 05 May 04 0011 8.0891 0.077
HMS * Summary of Results for Wetland #2
Project : Stoneybrook Phase II Run Name : 10-Yr Post
Start of Run 04May04 1200 Basin Model : Post-development
End of Run 05May04 1200 Met. Model 10-Year Frequency
Execution Time 10Hov04 1659 Control Specs 1 Minute dT
Computed Results
Peak Inflow 25.946 (cfs) Date/Time of Peak Inflow 05 May 04 0009
Peak Outflow 12.931 (cfs) Date/Time of Peak Outflow 05 May 04 0021
Total Inflow 2.94 (in) Peak Storage 0.73754(ac-ft)
Total Outflow 1.09 (in) Peak Elevation 447.57(ft)
HMS * Summary of Results for Wetland #2
Project : Stoneybrook Phase II Run Name : 100-Yr Post
Start of Run 04MaVO4 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 100-Year Frequency
Execution Time 1ONov04 1659 Control Specs 1 Minute dT
Computed Results
Peak Inflow 42.898 (cfs) Date/Time of Peak Inflow 05 Nay 04 0009
Peak Outflow 41.859 (cfs) Date/Time of Peak Outflow 05 May 04 0011
Total Inflow 5.26 (in) Peak Storage 0.81098(ac-ft)
Total Outflow 4.21 (in) Peak Elevation 447.98(ft)
Water Quality Pond Design 09-23-04
Wetland #2
William T. O'Daniel, P.E.
Created: 08/15/03
DRAINAGEAREA CHARACTERIZATION
Impervious Area to Pond (Wetland ) = 2.86
Total Drainage Area to Pond (Wetland) = 7.33
% Impervious = 39%
BMW SIZING TABLE
K, = N/A
b = N/A
Average Depth = 3.0
3.0
(3.0' for Constructed Wetland)
4.0
40% 1.73 1.43
1.70 L70 1.40
50% 2.06 1.73
Total Surface Area Required = 5420 sf (Total Drainage Area*Multiplier from BMP Sizing Table)
Duane K Stewart and Associates, Inc.
Stage-Storage
Wetland #2
Stage-Storage Function
William T. O'Daniel, P.E.
12/22/2004
Average Incremental Accumulated Estimated
Contour Contour Contour Contour Stage
Contour Stage Area Area Volume Volume w/ S-S Fxn
(feet) (feet) (SF) (SF) (CF) (CF) (feet)
t n 0.0 -,
444 r 1.0 13 5976 5976 5976 1.00
41t,_n 3.0 1 7437 6975 13950 19926 2.98
441 a 5.0 814? j 7791 15582 35508 5.02
Storage vs. Stage
40000
35000
y = 5960.8x"'055
30000
R2 = 0.9999
V 25000
°1rn 20000
15000
10000
5000
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Stage (feet)
Ks = = 5960tj?X
?
b 1.1 Duane K. Stewart and Associates

Stage-Storage William T. O'Daniel, P.E.
Wetland #2 Below Normal Pool 12/22/2004
Stage-Storage Function

Average Incremental Accumulated Estimated
Contour Contour Contour Contour Stage
Contour Stage Area Area Volume Volume w/ S-S Fxn
(feet) (feet) (SF) (SF) (CF) (CF) (feet)
1-10,0 0.0 672 _
4420 -- ?; 2.0 l V )6
1039
2078
2078
2.03
-1
1 23 - - 2.3 _ r
1953
488
2566
2.21
44', U 3.0 °?25 3969 2976 5543 3.02
Storage vs. Stage
6000
5000 y = 363.44xZ.4"
R2 = 0.9935
LL 4000
U
rn 3000
0
2000
1000
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Stage (feet)
1 b 363.--
b= 2.4(,--
Total Volume @ Elev 443.0 = 5543 cf
Surface Area @ Elev 443 = 5438 sq. ft
Hydraulic Depth = 1.0 ft
Duane K. Stewart and Associates
Stage-Storage
Forebay Hydraulic Depth
Stage-Storage Function

Contour
(feet)

Stage
(feet)
Contour
Area
(SF) Average
Contour
Area
(SF) Incremental
Contour
Volume
(CF) Accumulated
Contour
Volume
(CF) Estimated
Stage
w/ S-S Fxn
(feet)
j In 0.0 3
4d" 0 2.0 591 1182 1182 2.01
-
44,',.0 3.0 1020 904 904 2086 2.96
444 n 4.0 13 I 1168 1168 3253 3.99
444 4.5 1,97 1356 678 3931 4.54
4500
4000
3500
3000
m 2500
rn
0 2000
1500
1000
500
0
William T. O'Daniel, P.E.
12/22/2004
Storage vs. Stage
y = 419.18x"4798
R2 = 0.9991
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Stage (feet)
Ks= 119.18
b = 1.47 9''

Total Volume @ Elev 444.5 = 3931
Surface Area @ Elev 444.5 = 1397
Hydraulic Depth = 2.8 ft
Duane K. Stewart and Associates
SIPHON
Stormwater Wetland #2
Inverted Sint
D siphon =
No. siphons =
Ks =
b=
Cd siphon =
Siphon Invert
=
Volume @ Normal Pool =
Basin Invert
=
ion Design Sheet
1.5 inches
1
6135.6
1.0897
0.60
443.00 feet
0 CF
443.00 feet
WSEL
(feet) Vol. Stored
(cf) Siphon Flow
cfs) Avg. Flow
(cfs)., Incr. Vol.
(cf) Incr. Time
(sec)
447.000 27792 0.117
446.737 25803 0.113 0.115 1989 17285
446.473 23827 0.109 0.111 1976 17804
446.210 21864 0.105 0.107 1963 18380
445.946 19915 0.100 0.102 1949 19026
445.683 17982 0.095 0.098 1933 19758
445.419 16066 0.091 0.093 1916 20597
445.156 14169 0.085 0.088 1897 21572
444.892 12292 0.080 0.083 1877 22727
444.629 10439 0.074 0.077 1853 24128
444.365 8612 0.067 0.071 1826 25879
444.102 6817 0.060 0.064 1795 28163
443.838 5061 0.052 0.056 1756 31341
443.575 3354 0.042 0.047 1707 36251
443.311 1718 0.029 0.036 1636 45671
443.048 222 0.003 0.016 1497 91046
Drawdown Time = 5.09 days
By comparison, if calculated by the average head over the orifice (assuming
average head is half the total depth), the result would be:
Average driving head on orifice = 2.000 feet
Orifice composite loss coefficient = 0.600
X-Sectional area of 1 - 1.5" inverted siphon = 0.012 ftz
Q = 0.0817 cfs
Drawdown Time = Volume / Flowrate / 86400 (sec/day)
Drawdown Time = 3.94 days
William T. O'Daniel, P.E.
11/10/2004
Conclusion, : Use 1 - 1.5" Diameter PVC Inverted Siphon to drawdown the accumulated
volume from the 1.0 " storm runoff, with a required time of about 4 days..
Duane K. Stewart and Associates, Inc.
Detention Design Rating Curve
Wetland #2
Outlet Stucture Information
Riser Diameter = 4.0 ft
Riser Crest Elevation = 447.0 ft
Barrel Diameter = 15 inches
Barrel Invert Elev = 443.0 ft
Barrel Manning's'n' = 0.013
Barrel Length = 62 ft
Cd = 0.59
Riser Weir Coefficient = 3.0
Tailwater Elevation = 444.0 ft
Ke = 1.5
1.5-inch Diameter Orifice
Orifice Size = 1.5 inches
Orifice Elevation = 443 ft
Weir Information
Length 30.0
Elevation = 447.50
Weir Coefficient = 3.0
Stage-Storage Information
Ks = 6135.6
b = 1.0897
Starting WSE = 443
William T. O'Daniel, P.E.
11/10/2004

Elevation
Storage Total
Outflow Riser as
Weir Riser as
Orifice Barrel
Orifice Barrel
Tailwater
Orifice
Weir
[ft] [acre-feet] [cfs] [cfs] [cfs] [cfs] [cfs] [cfs] [cfs]
443.00 0.000 0.00 0.0 0.0 0.0 0.0 0.00 0.0
443.10 0.011 .0.01 .0.0 U. .0.0. 0.0 0.01 _ .0.0
443.20. 0.024 0.02. 0.0. 0.0 0.0 0.0 0.02 0.0
443.30 0.038 0.03 0.0 0.0. 0.0 0.0 0.03 0.0
443.40 0.052 0.03 0.0. 0.0 0.0 OA 0.03 0.0
443.50. 0.066
0.04
0.0
0,0
0.0
0.0
0.04
0.0
443.60. 0.081 0.04 0.0 0.0 0.0 0.0 0.04 0.0
443.70 0.095 0.05 0.0 , 0.0 0.0 0.0.. 0.05 0.0
443:80 0.110 0.05 0.0 0.0 0.0 0.0. 0.05 0.0
443.90 , 0.126 0.05 0.0 , 0.0 0.0. 0.0 . 0.05 0.0
444.00 0.141 0.06. 0.0 0.0 0.0. 0:0 0.06 0.0
444.10. 0.156 0.06 0.0. 0.0 0.0 . 0.0. 0.06 0.0
444.20 0.172 0.06 0.0 0.0 ... 0.0 0.0 0.06 0.0
444.30.. 0.187. 0.06. 0.0.. 0.0 0.0 0.0 0.06 0.0
444.40 0.203 0.07 0.0 0.0 0.0 0.0 0.07 0.0
444.50 0.219 0.07 0.0 0.0 0.0 0.0 0.07 0.0
444.60 0.235 0.07 0.0 0.0 0.0 0.0 0.07 .. 0.0
444.70 0.251 0.07 0.0 0.0 0.0 .0.0 0.07 0.0
444.80. 0.267 0.08 0.0 0.0 0.0 0.0 0.08 .0.0
444.90 0.283 0.08. 0.0 0.0 0.0 0.0 0.08 0.0
445.00 0.300 0.08. 0.0 0.0-1. 0.0 0.0 . 0.08 0.0
445.10 0.316 0.08 0.0 0.0 0.0 0.0 0.08 0.0
Duane K. Stuart and Associates
Detention Design Rating Curve
Wetland #2
William T. ODaniel, P.E.
11/10/2004
445.20 0.333 0.08 0.0 0.0 0.0 0.0 0.08 0.0
445.30 0.349 0.09 0.0 0.0 0.0 0.0 0.09 0.0
445.40 0.366 0.09 0.0 0.0 0.0 0.0 0.09 0.0
445.50. 0.382 0.09 0.0 0.0 0.0 0.0 0.09 0.0
445.60 0.399 0.09 0.0 0.0 0.0 0.0 0.09 0.0
445.70 0.416 0.09 0.0 0.0 0.0 0.0 0.09 0.0
445.80 0.433 0.10 0.0 0.0 0.0 0.0 0.10 0.0
445.90 0.449 0.10 0.0 0.0 0.0 0.0 0.10 0.0
446.00 0.466 0.10 0.0 0.0 0.0 0.0 0.10 0.0
446.10 0.483 0.10 0.0 0.0 0.0 0.0 0.10 0.0
446.20 0.500 0.10 0.0 0.0 0.0 0.0 0.10 0.0
446.30 0.517 0.10 0.0 0.0 0.0 0.0 0.10 0.0
446.40 0.534 0.11 0.0 0.0 0.0 0.0 0.11 0.0
446.50 0.552 0.11 0.0 0.0 0.0 0.0 0.11 0.0
446.60 0.569 0.11 0.0 0.0 0.0 0.0 0.11 0.0
446.70 0.586 0.11 0.0 0.0 0.0 0.0 0.11 0.0
446.80 0.603 0.11 0.0 0.0 0.0 0.0 0.11 0.0
446.90 0.621 0.11 0.0 0.0 0.0 0.0 0.11 0.0
447.00 0.638 0.12 0.0 0.0 10.7 9.9 0.12 0.0
447.10 0.655 1.31 1.2 18.8 10.8 10.1 0.12 0.0
447.20 0.673 3.49 3.4 26.6 11.0 10.2 0.12 0.0
447.30 0.690 6.31 6.2 32.6 11.1 10.4 0.12 0.0
447.40 0.708 9.66 9.5 37.6 11.3 10.6 0.12 0.0
447.50 0.725 10.84 13.3 42.1 11.4 10.7 0.12 0.0
447.60 0.743 13.84 17.5 46.1 11.6 10.9 0.12 2.8
447.70 0.761 19.19 22.1 49.8 11.7 11.0 0.12 8.0
447.80 0.778 26.08 27.0 53.2 11.9 11.2 0.13 14.8
447.90 0.796 34.21 32.2 56.4 12.0 11.3 0.13 22.8
448.00 0.814 43.40 37.7 59.5 12.1 11.5 0.13 31.8
Duane VL Stuart and Associates
QUALPOND William T. O'Daniel, P.E.
Wetland 11/10/2004
Water Quality Pond Design Sheet
Average Incremental Accumulated Estimated
Contour Contour Contour Contour Stage
Contour Stage Area Area Volume Volume w/ S-S Fxn
(feet) (feet) (SF) (SF) (CF) (CF) (feet)
t 44-' 0.0 5 S'
444.0 1.0 6513 6156 6156 6156 1.00
446.0 3.0 74_37 6975 13950 20106 2.97
L 448.0- 5.0 8145 7791 15582 35688 5.03
Storage vs. Stage
40000
35000
y = 6135.6x'-"'
30000
R2 = 0.9999
LL 25000--
0
rn 20000--
15000--
10000 5000
0.
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Stage (feet)
Ks = 6135.6
b = 1.0897
Duane K. Stewart and Associates, Inc.
QUALPOND
Wetland
William T. ODaniel, P.E.
11/10/2004
Calculation of Runoff Volume required for storage
The runoff to the pond for the 1" storm detention requirement is calculated using the SCS curve,
number method. Impervious areas that directly enter the pond are counted as Directly Connected
Impervious Areas (DCIAs). No infiltration calculation will be provided for these areas. Areas
not directly connected will be accounted for in a composite curve number.
From SCS Soils Survey map, predominant hydrologic soil type = D
Using basic SCS runoff methodology, with no adjustments made
to initial abstractions (0.2*S and 0.8*S).
Impervious Area, directly connected (DCIA) = 2.86 acres
@ CN = 98
Otherareas draining to pond (not.DCIA) = 4.47 acres
@ CN = 70
Runoff from DCIAs =>
Precipitation amount = 1.0 inches
S = 0.204 inches (calculated)
Q* = 0.791 inches (calculated)
Runoff volume = 8211 CF
Runoff from non-connected areas =>
Precipitation amount = 1.0 inches
S = 4.286 inches (calculated)
Q* = 0.005 inches (calculated)
Runoff volume =
75 CF
Therefore, total runoff from precipitation in question = 8286 CF
This amount of runoff must be stored in the pond above normal pool elevation,
and be released in a period of two (2) to five (5) days, by an inverted PVC
siphon, the invert end of which is set at permanent pool elevation.
Duane K. Stewart and Associates, Inc.
QUALPOND
Wetland
William T. O'Daniel, P.E.
11/10/2004
Calculation of depth required for runoff storage pool (above normal pool)
Normal pool depth (above invert) = 0.00 feet
Storage provided at permanent pool depth = 0 CF (calculated)
Total storage required for normal + storage pool = 8286 CF
Stage (above invert) associated with this storage = 1.32 feet
Therefore, depth required above normal pool for storm storage = 1.32 feet
15.81 inches
Therefore .set crest of principal spillway at stage = 4.00 feet
and EL = 447.00 feet
At principal spillway crest, storm pool storage provided = 27792 CF .
Duane K. Stewart and Associates, Inc.
conc:riser anti-flotation
Wetland #2
William T. O'Daniel, P.E.
11/10/2004
Manhole Riser/Barrel Anti-Flotation Calculation Sheet
Input Data =>
Inside diameter of manhole =
Wall thickness of manhole =
Base thickness of manhole =
Base diameter of manhole =
Inside height of Manhole =
Concrete unit weight =
OD of barrel exiting manhole =
Size of drain pipe (if present) =
Trash Rack water displacement =
Concrete Present =_>
Total amount of concrete:
Base of Manhole =
Manhole Walls =
4.0 feet
5.0 inches
6.0 inches
4.0 feet
4.0 feet
142.0 PCF
20.0 inches
1.5 inches
40.0 CF
6.283 CF
23.126 CF
Adjust for openings:
Opening for barrel =
Opening for drain pipe =
Total Concrete present, adjusted for openings =
Weight of concrete present =
0.909 CF
0.005 CF
Amount of water displaced =>
Displacement by concrete = 28.495 CF
Displacement by open air in riser = 50.266 CF
Displacement by trash rack = 40.000 CF
Note: NC Products lists unit wt. of
manhole concrete at 142 PCF.
28.495 CF
4046 lbs
Total water displaced by riserlbarrel structure = 118.760 CF
Weight of water displaced = 7411 lbs
Duane K. Stewart and Associates, Inc.
conc riser anti-flotation William T. O'Daniel, P.E.
Wetland #2 11/10/2004
Calculate amount of concrete to be added to riser =>
Safety factor to use = 1.15 (recommend 1.15 or higher)
Must add = 4476 lbs concrete for buoyancy
Concrete unit weight for use = 142 PCF (note above observation for NCP concrete)
Buoyant weight of this concrete = 79.60 PCF
Buoyant, with safety factor applied = 69.22 PCF
Therefore, must add = 64.666 CF of concrete
Standard based described above = 6.283 CF of concrete
Therefore, base design must have = 70.949 CF of concrete
Calculate size of base for riser assembly =>
Diameter = 6.000 feet
Thickness = 32.0 inches
Concrete Present = 75.398 CF OK
Check validity of base as designed =>
Total Water Displaced = 187.876 CF
Total Concrete Present = 97.610 CF
Total Water Displaced = 11723 lbs
Total Concrete Present = 13861 lbs
Actual safety factor = 1.18 OK
Results of design =>
Base diameter = 6.00 feet
Base Thickness = 32.00 inches
CY of concrete total in base = 2.63 CY
Concrete unit weight in added base >= 142 PCF
Duane K. Stewart and Associates, Inc.
Antiseep - Wetland #2
Wetland #2
Anti-Seep Collar Design Sheet
This sheet will, given the barrel length of interest and minimum seep collar
projection from the barrel, determine the number of anti-seep collars to place
along the barrel section, and the expected spacing of the collars.
Design Requirements =>
Anti-seep collars shall increase the flow path along the barrel by 15%.
Anti-seep collars shall be spaced a maximum of 14X the minimum collar projection
or 25 feet, whichever is less.
Anti-Seep Collar Design =>
William T. O'Daniel, P.E.
10/11/2004
Flow Length Min. Cale'd # Max. of l'Se
Pond along barrel Projection of collars Spacing colh,rs to SPaci? Spacing
ID (feet) (feet) required (feet) ?se"` -(feet: OK?
Wetland #2 62.0 2.33 2.00 25 _2.1) ?a hb666?1 YES
Note: Ifspacing to use is greater than the maximum spacing, add collars until the
spacing to use is equal to or less than the maximum spacing allowable for the collar
design. Anti-seep collars shall be used under the structural fill portions of all berms/dams
unless an approved drainage diaphragm is present at the downstream end of the barrel.
Duane K. Stewart and Associates, Inc.
Wetland #2
Pipe Outlet Protection
Project Name: Stoneybrook Cottages Designer: O'Daniel
Project Number: 1061-02.40 Date: October 11, 2004
All Calculations are based on the North Carolina Erosion and Sedimentation Control Manual.
Wetland #2
Flow= Q10 = 12.9 cfs
Pipe Dia. = Do = 15 in
Tailwater Depth = 15 in
Length of Apron = La =
d50 Rip Rap Size =
dmax = 1.5(d50) =
Apron Thickness = 1.5(dmax) _
Apron Width =
28 ft use figure 8.066
5 in use figure 8.066
7.5 in (calculated)
11.25 in (calculated)
12.45 ft Do + 0.4La
Check Stone Size and Apron Length Using NYDOT Method.
Velocity = Vo = Q10/Area of Pipe = 10.51184 ft/s
Rip Rap Zone = 2
Rip Rap Classification = B
Length of Apron = La (nydot) = 7.5 ft
Apron Width = 3(Do) = 3.75 ft
Apron Thickness = 18 in
USE: Class B Rip Rap
Length = 28 ft
Width = 14 ft
Thickness = 18 in
(calculated)
(figure 8.06. b. 1)
(figure 8.06.b.2)
(figure 8.06.b.2)
(calculated)
min=10ft
min = 12 in
Page 1
A LEM
_TfA
RDENROL
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
December 16, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Road, Suite H-106
Durham, NC 27705
Subject Property: Stoneybrook Cottages Phase II Subdivision
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
DWQ Project # 03-0728
Durham County
On November 15, 2004, the Division of Water Quality (DWQ) received a fax in regard to the Storm
Water Management Plan prepared by your engineer, Mr. William T. O'Daniel, of Duane K. Stewart and
Assoc., Inc. The Storm Water Management Plan is required in order to comply with Condition 4 of the
401 Water Quality Certification issued last year on September 4, 2003.
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). The following items were not included:
¦ Signed and notarized Operation and Maintenance Agreement for the stormwater facilities.
¦ Completed worksheet for each stormwater management facility (BMP worksheets).
¦ Please re-design location of the inlet or outlet of the extended detention wetland to eliminate potential
short-circuiting.
The stormwater BMP worksheets can be found on the 401 Oversite/Express Review Website
(http://h2o.enr.state.nc.us/ncwetlands/mitresto.html). Please submit one original and two photocopies of
the information requested above.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Ms. Cynthia Van Der Wiele at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
Cyndi B. Karoly
DWQ, Wetlands / 401 Unit
CBK/cvdw
cc: DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
William O'Daniel, Duane K. Stewart & Assoc., Inc., 3715 University Dr., Durham, NC 27707
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650 One
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NofthCarohna
Phone: [phone] / FAX [phone] / Internet: httr)://h2o.enr.state.nc.us/ncwetlands Naturalifil
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Nov.16. 2604 9:07AM
NCDENR
No. 0866 P. 3
CD
and Natural Reso
William G. Ross, Jr., Secretary
Alan W. Klimek, RE, Director
vV 1155 D
DwQ Project # 03-0728
Durham Conn
Diane K. Stewar. & Assoc.
1W. Ryan D. Stewart
Stelic Enterprises, Inc.
6141 Guess Road., Suite H-106
Durham, NC 27705

RECEIPT REQtuEST&n
NR - WATER QUALITY
WETLANDS AND STORMWATER BRANCH
jECEIVED
J
')"A"E K 'STEViART & ASSOC
Subject Property: Stoneybrook Cottages Phase Il Subdivision
REQUEST FOR-MORE INFORMATION-Stommwater Management Plan
On October 15, 2004, the Division of Water Quality (DWQ) deceived the• stormwater management plan
prepamd by your engineer, NU. William T. O'Daniel, of Duane X. Stewart and. Assoc., Inc., to comply
with Condition 4 of the 401 Water Quality Certification issued last year on September 4, 2003.
Only complete application packages wHl be accepted and rrev?itewed by the MvWan of Water Quality
(DWQ). The following items were not included.
¦ Signed and notarized Operation and Maintenance Agreement for the stormwater facilities.
Completed worksheet for each stormwater management facility (BMP worksheets).
¦ -Please re-design location of the inlet or outlet of the extended detention wetland to eliminate potential
short-circuiting. .. .
The stormwatei- BMP worksheets can be found on the 401 OversiteJExpress Review Website
(httpJ/h2o.enr.state.nc.us/ncwetbmds/mitresto.htiW).
Please respond within three weeks of the date of this letter bysendiug three (3) copies this information in
writing. This letter only add=sses the stormwater management' plan review and does not authorize any
impacts to wetlands or streams until the plans-are approved. Please call Ms. Cynthia Van Der Wiele at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
Lxv?
CYA, B. Karoly
DWQ, Wetlands / 401 Unit
CBKJcvdw
cc: DWQ Raleigh Regional Office
USAGE Raleigh Regulatory Field Office
File Copy
Central Files
William O'Daniel, Duane K. Stewart & Assoc., Inc., 3715 University Dr., Durham, NC 27707
401 Wetlands Cemwon Unit
1650 Mall 8w W Center, Raleigh. North Carorina 27699-165(r'
?r?Fle
2321 Crabtree Boulevard, Sub 250, Raleigh. North COMM 276N Caro
i?
Phone: [phone] PAX 919-733-6M/ Intemet httn://h2o enrstate.nc.!ALrIoMlands r
An Equal OpportunitylAffumative Action Empbyer-509'& Recyded110% Post Cor wrwr Paper [T Kti!
NOU-16-2004 TUE 08:45 TEL:[phone] NAME:DWO-WETLANDS P. 3
p@wWRI
'SPECIF% ]Nov. 16. 2604 9.07AM. Diane K. Stewart & Assoc. No, 0$66 F' 2
:M , SEC-110-,
TIONAjL.U$E. irY OF' DURHAM. STORM
500 SQUARE DRAINAGE EASEM?
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NOO-16-2004 TUE 08:45 TEL:[phone] NAND DWO-WETLANDS P. 2
. . Nov. 16. 2004 9:06AM Diane K. Stewar: & Assoc.
AOL
Duane K.Stewart
& ASSOCIATES, INC.
No. 0866 F. 1
Letter of Transmittal
To., Cyndi Karoiy From: Todd O'Daftl
Company/Dept: NCDENK J DWQ Via: US Mail ? Delivery
Date: 11/16/2004 ? Express [] Pick-up
Project Name: 9toneybrook Cottager, Phase 11 Fax # of Pages,
Project #: Fax # [phone]
For Your Use As Requested Q For Review & Comment
? For Approval ® Please Reply ? Other.
Item: Date Sets/Pages
Revised Wetiand Pond 1
Copy of letter from DWQ 11/2/04 1
Comments:
Cyndl, In reoponoe to comment #3 In your letter dated November 2, 2004, [have. added marsh channels
to the wetland to chow an indirect path from the inlet to the outlet. Will this eatiefy your comment? 1
can't change the location of the outlet without impacting the buflerr,. I can "wind" the flow path more
than thin plan currently shows if that helps? 'thank you for looking at thie,
cc:
Duane K. Stewart & Associates, Inc.
Consulting Engineers
3715 University Drive, Dumom NC 27707
[phone] fox [phone]
www.dkso-tsi.com

NOU-16-2004 TUE 08:44 TEL:[phone] NAME:DWO-WETLANDS P. 1
7 r '6
SENDING CONFIRMATION
DATE NOV-15-2004 MON 16:04
NAME DWQ-WETLANDS
TEL [phone]
PHONE : [phone]
PAGES : 8/8
START TIME : NOV-15 16:01
ELAPSED TIME : 0310411
MODE : ECM
RESULTS : OK
FIRST PAGE OF RECENT DOCUMENT TRANSMITTED...

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Division of Water Quality
Department of Environmental and Natural Resources
401 Oversight/Express Permit, Program Development and
Transportation Permitting Units
Street Address: 2321 Crabtree Boulevard, Suite 250
.Raleigh, NC 27604-2260
Mailing Address: 1650 Mail Service Center
Raeigh, NC 27699-1650
Contact Information:- Phone N: 919-733-1786
Fax W, 919-733-6893
Fax To: ??i P ? e. ??' G? Fax #:
Company: Date:
Number of pages including cover sbeet:
Notes or special instructions
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
November _2, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Road, Suite H-106
Durham, NC 27705
Subject Property: Stoneybrook Cottages Phase II Subdivision
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
DWQ Project # 03-0728
Durham County
On October 15, 2004, the Division of Water Quality (DWQ) ?eceived the stormwater management plan
prepared by your engineer, Mr. William T. O'Daniel, of Duari? K. Stewart and Assoc., Inc., to comply
with Condition 4 of the 401 Water Quality Certification issued last year on September 4, 2003.
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). The following items were not included:
¦ Signed and notarized Operation and Maintenance Agreement for the stormwater, facilities.
¦ Completed worksheet for each stormwater management facility (BMP worksheets).
¦ Please re-design location of the inlet or outlet of the extended detention wetland to eliminate potential
short-circuiting.
The stormwater BMP worksheets can be found on the 401 Oversite/Express Review Website
(http://h2o.enr.state.nc.us/ncwetlands/mitresto.html).
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any
impacts to wetlands or streams until the plans are approved. Please call Ms. Cynthia Van Der Wiele at
919-715-3473 if you have any questions regarding this issue.
Sincerely,
C Xi B. Karoly
DWQ, Wetlands / 401 Unit
CBK/cvdw
cc: DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
William O'Daniel, Duane K. Stewart & Assoc., Inc., 3715 University Dr., Durham, NC 27707
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650"
2321 Crabtree Boulevard; Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.nc.us/ncwetlands
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
NorthCarohna
Nahmilly
.rr...w.wi..
Duane K. Stewart
& ASSOCIATES, INC.
Letter of Transmittal
To: Cyndi Karoly From: Todd O'Daniel
Company/Dept: NCDWQ Via: ? US Mail ® Delivery
Date: 10/13/2004 ? Express ? Pick-up
Project Name: 5toneybrook - Phase 2 ? Fax # of Pages
Project #: 1061-02.40 Fax #
? For Your Use ? As Requested ? For Review & Comment
® For Approval ? Please Reply ? Other:
Item: Date Sets/Pages
Copy of Wetland Construction 5heets 10/12/04 1/2
Wetland Design Calculations 10/12/04 1
Copy of DWQ letter of approval (DWQ# 03-0728) 09/04/03 1
f? U 3 - 5 c7??
Comments:
Cyndi, This submittal is in accordance with the attached 401 permit approval DWQ # 03-0728 dated
5eptember 4, 2003. Condition 4 indicates that a stormwater management plan be submitted and
approved prior to construction. We are also submitting this plans to the City of Durham for approval.
Thank you.
cc:
Duane K. Stewart & Associates, Inc.
Consulting Engineers
3715 University Drive, Durham NC 27707
[phone] fax [phone]
www.dksa-tsi.com
Duane K. Stewart
& ASSOCIATES, INC.
CONSULTING
ENGINEERS
Civil • Sanitary
Environmental
Planning • Design
Survey
STONEYBROOK COTTAGES PHASE II
Storm Water Wetland #2 Design
1061-02.40
SEAL
22630
!yz
q4 T. C? .•`?b •
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Site Location:
West Side of Cole Mill Road at Stoneybrook Drive
Prepared by
Duane K. Stewart and Associates, Inc.
3715 University Drive
Durham, North Carolina 27707
Engineer:
William T. O'Daniel, PE
Date: October 12, 2004
3715 University Drive
Durham, NC 27707
[phone]
fax [phone]
e-mail: [e-mail]
www.dksa-tsi.com
STONEYBROOK COTTAGES PHASE II
Storm Water Wetland #2
General Description
Stoneybrook Cottages Phase II is a proposed single-family home subdivision. It is
located on the west side of Cole Mill Road where Cole Mill Road intersects with
Stoneybrook Drive in Durham, North Carolina. Stoneybrook Cottages Phase II is an
extension of the existing Stoneybrook Cottages Phase I. The project is to consist of
single-family homes with appurtenant streets and utilities.
The project is located in the Neuse River basin but is not in a watershed protection
district. 85% TSS removal is required for this project to adhere to a 401 Water Quality
Certification.
10% Stormwater Rule and 1-Year Peak Flow Detention
Detention of the peak flow resulting from the 1-, 2- and 10-year rainfall events will be
provided. The majority of the runoff from the proposed land disturbance will be diverted
to the proposed stormwater wetland, which, in addition to 85% TSS removal and nitrogen
export reduction, will provide detention of the peak flow resulting from the 1-, 2-, and
10-year storm events below pre-development.
The design of the stormwater wetland is included with this report. An interior wall will
be utilized to provide volume for the wetland while keeping the grading of the wetland
entirely out of the surrounding Neuse Buffer.
Wetland Design
The stormwater wetland design adheres to the North Carolina Division of Water Quality
(NC DWQ) Best Management Practices (BMP) Manual. A level spreader is not included
in the design of the stormwater wetland. North Carolina DWQ does not require level
spreaders in cases where stormwater wetlands are utilized.
The wetland is also designed utilizing the City of Durham Reference Guide for
Development Wet Detention Pond Design Summary. This Design Summary is adapted
to the stormwater wetland.
The stormwater wetland detains the peak flow resulting from the 1-year storm event to
pre-development levels. The Summary of Results shows the pre- and post-development
peak flows resulting from the 1-year rainfall event. The Summary of Results also shows
the peak inflow and outflow, water surface elevation and freeboard to the top-of-berm
from the 1-, 10-, and 100-year rainfall events.
The proposed wetland consists of a forebay located at the point of discharge for the storm
drainage system that collects stormwater from the wetland watershed. This forebay is 3
feet deep to accommodate mosquito fish. The forebay will allow sediment to accumulate
and prevent the sediment from overloading the remainder of the wetland where shallow-
water vegetation will be planted. A micropool is present at the riser of the outlet
structure. The micropool will accommodate mosquito fish and it will assist in keeping
the 1.5-inch diameter outlet orifice clear of debris.
The primary outlet structure is a 15-inch diameter barrel with a 4-foot diameter precast
manhole riser. The 15-inch diameter barrel is 62-feet long. This riser-barrel structure
serves as the primary spillway and the 30-foot long weir outlet serves as the emergency
spillway. The stormwater wetland outlet structure and the emergency weir outlet passes
the runoff resulting from the 100-year rainfall event without overtopping the berm. The
water surface elevation resulting from the runoff of the 100-year rainfall is 447.98 feet
and the top of berm elevation is 448.25 feet.
The interior of the wetland has been graded such that the majority of the wetland will be
between 3" - 9". A small, 9" deep channel will travel from the forebay at the pond inlet
to the micropool at the outlet of the pond. This channel will be created such that it flows
circuitously through the wetland. This will increase the residence time of water in the
wetland, and it will provide a large amount of 3" - 9" surface area for shallow-water
vegetation to propagate.
A planting plan is included with the construction plans that includes vegetation approved
by City of Durham Stormwater Services. The planting plan includes three zones: shallow
water (3" - 12"), deep water (greater than 12") and "Shallow Land Species". The
wetland is divided into zones, which correspond to the above depths. A list of required
plants and the number of each plant is then listed for each zone.
Methodology
¦ On- and off -site topography is from City of Durham GIS Aerial Topography
(1999).
¦ Rainfall is from NOAA Technical Memorandum NWS HYDRO-35 (June, 1977).
¦ Time of concentration is determined using the SCS Segmental Approach.
¦ Flow calculations are performed using HEC-HMS Version 2.2.2. Within HEC-
HMS, the SCS Method is used to generate flows. SCS Curve Numbers are based
upon Hydrologic Soil Group `B'. Hydrologic Soil Groups are based upon the
classification of the soils, which is determined using Durham County Soil Survey,
Sheet 16.
Routing of the stormwater wetland is also conducted using HEC-HMS Version
2.2.2. A stage-storage rating curve is generated using the `average-end-area'
method to generate an equation in the form of S = Kszb where S is the storage
volume (ft), z is the water surface elevation, and K, and b are multipliers based
upon a `power' fit in Microsoft Excel. A stage-discharge curve is generated
using widely accepted empirical equations for discharge. Flow from the primary
outlet structure is based upon the least (controlling) flow from each potential type
of flow including riser as weir, riser as orifice, barrel under headwater control and
barrel under tailwater control. The riser as weir equation is:
Q = CWLH3/2
where Q is the flowrate (cfs)
Cw, is the weir coefficient (3.0 for broadcrested weir)
L is the length of the weir (Circumference of riser, 70pipe, ft)
H is the difference between the current water surface elevation and
the crest of the riser (ft).
The riser as orifice equation is:
Q = CdA(2gH)i/2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge (0.59)
A is the surface area of the riser opening ((a/4)(D/l2)2, ft2)
g is the acceleration due to gravity (32.2 ft/sec)
and H is the difference between the current water surface elevation and
the crest of the riser (ft).
The barrel headwater control equation is broken into two steps. For a water
surface elevation that is above the invert of the barrel but below the crown of the
pipe, the equation is:
Q = 0.372CdDpipeH3/2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge
Dpipe is the diameter of the barrel (inches)
H is the difference between the current water surface elevation and
the upstream invert of the barrel (ft).
The second step of the barrel headwater control (orifice) equation begins at the
crown of the pipe. The equation for flow then becomes:
Q = 0.0437CdD2(Z - (D/24) - Z;)"2
where Q is the flowrate (cfs)
Cd is the coefficient of discharge
D is the pipe diameter (inches)
Z is the current water surface elevation (ft)
and Z; is the starting water surface elevation (ft).
The equation for tailwater control is based upon the energy equation:
Q = square root (((D4/522)(Z - Zb))/(((5096Ln2)/D1.33) + Ke))
where Q is the flowrate (cfs)
D is the pipe diameter (inches)
Z is the current water surface elevation (ft)
Zb is the downstream water surface elevation (ft)
L is the length of pipe (ft)
n is the Manning's `n' value of the pipe
and K. is the aggregate loss coefficient.
The smallest calculated flow rate of the four above options is the controlling flow,
and the one that is reported in the stage-discharge function. This flow is added to
the weir flow, if the weir exists and has been activated. The equation for weir
flow is:
Q = CWLH3i2
where Q is the flow (cfs)
CN, is the weir coefficient (assumed to be 3.0 for broadcrested weir)
L is the length of the weir
and H is the water surface elevation above the crest of the weir.
The stage-storage and stage-discharge relationships are then input into the HEC-
HMS reservoir model, which routes the basin using the Storage-Indication
Method.
Other aspects of the stormwater wetland design, including surface area, volume,
and drawdown time, are based upon NC DWQ BMP Manual (April, 1999).
NC DWQ Wetland and Detention Basin Design Summary of Results
Summary of Results
1-Year Storm Flow Analysis
(City of Durham 1-Year Detention Per Neuse Nitrogen Regulations)

Basin Predeveloped 1-Year
Discharge Postdeveloped 1-
Year Discharge
% Increase
# [cfs] [cfs]
1-1 12.34 12.20 -1.2%
1-2 12.38 12.43 0.4%
Note: All other discharges are per the approved stormwater impact analysis.
Wetland #2 Design Summary
Water Quality Design Summary
William T. O'Daniel, P.E.
10/12/2004
Drainage Area to Wetland = 7.33 acres
Impervious Area to Wetland = 2.86 acres
% Impervious = 39.0%
Surface Area Required = 5420 sf
Surface Area Provided = 5798 sf
PVC Inverted Siphon Size = 1.5 inches
Drawdown Time = 3.65 days
Routing Design Summary
Top of Berm Elev. = 448.3 ft
Return
Period
Peak Inflow Peak
Outflow
WSE
Freeboard
[years] [cfs] [cfs] [ft] [ft]
1 10.677 0.2157 446.51 1.74
10 25.946 12.562 447.56 0.69
100 42.898 41.985 447.98 0.27
Duane K. Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Pre-development
1. Determine Hydrologic Soil Groups
Soil Abbreviation Soil Name Hydrologic Soil Group
ApB Appling B
ApC Appling B
GeC Georgeville B
GeB Georgeville B
HrB Herndon B
HrC Herndon B
TaE Tatum C
- The majority of the soils in the watershed are of Hydrologic Soil Group 'B'.
HSG 'B' for purposes of determining SCS Curve Numbers.
II. List SCS Curve Numbers for Specific Cover Conditions

Cover Condition HSG'B' SCS
Curve Number
Comment
Impervious 98
Open 61 Assume'good' condition
Wooded 55 Assume'good! condition
William T. O'Daniel, P.E.
10/12/2004
III. Pre-development Area, SCS Curve Number and Time of Concentration
Drainage Point #1-1 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.00
Onsite Open 0.90
Onsite Wooded 3.49
Offsite Impervious 4.49
Offsite Open 3.59
Offsite Wooded 9.89
Total Area = 22.36
0.0349
Acres
sq. miles
Composite SCS Curve Number = 64.8
SCS Lag = 7.57
minutes
Drainage Point #1-2 (HSG 'B'):
Cover Area
Condition [acres]
Onsite Impervious 0.27
Onsite Open 0.47
Duane K Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Pre-development
Onsite Wooded 4.31
Offsite Impervious 5.23
Offsite Open 4.19
Offsite Wooded 11.53
Total Area = 26.00
0.0406
Composite SCS Curve Number = 65.2
Acres
sq. miles
SCS Lag = 10.96 minutes
William T. O'Daniel, P.E.
10/12/2004
Duane K Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Post-development
1. Determine Hydrologic Soil Groups
Soil Abbreviation Soil Name Hydrologic Soil Group
ApB Appling B
ApC Appling B
GeC Georgeville B
GeB Georgeville B
HrB Herndon B
HrC Herndon B
TaE Tatum C
- The majority of the soils in the watershed are of Hydrologic Soil Group 'B'. Use
HSG'B' for purposes of determining SCS Curve Numbers.
H. List SCS Curve Numbers for Specific Cover Conditions

Cover Condition HSG 'B'
SCS Curve Number
Comment
Impervious 98
Open 61 Assume'good' condition
Wooded 55 Assume'good' condition
III. Post-development Area, SCS Curve Number and Time of Concentration
Drainage Point #1-1 - To Wetland (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 2.86
Onsite Open 2.71
Onsite Wooded 0.00
Offsite Impervious 0.40
Offsite Open 0.76
Offsite Wooded 0.60
Total Area = 7.33 Acres
= 0.0115 sq. miles
Composite SCS Curve Number = 77.0
SCS Lag = 7.57 minutes
William T. O'Daniel, P.E.
10/12/2004
Duane K Stewart and Associates, Inc.
HEC-HMS Inputs-revl
Post-development
Drainage Point #14 - Wetland Bypass, Sub-basin #1 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.25
Onsite Open 0.20
Onsite Wooded 3.35
Offsite Impervious 4.29
Offsite Open 3.29
Offsite Wooded 9.72
Total Area = 21.10
0.0330
Composite SCS Curve Number = 65.2
SCS Lag = 7.57
Drainage Point #1-2 - Wetland Bypass, Sub-basin #2 (HSG 'B'):
Cover
Condition Area
[acres]
Onsite Impervious 0.00
Onsite Open 0.48
Onsite Wooded 0.00
Offsite Impervious 5.03
Offsite Open 4.23
Offsite Wooded 11.10
Total Area = 20.84
0.0326
Composite SCS Curve Number = 66.7
Acres,
sq. miles
minutes
Acres
sq. miles
SCS Lag = 9.96 minutes
William T. O'Daniel, P.E.
10/12/2004
Duane K. Stewart and Associates, Inc.
HMS * Summary of Results
Project Stoneybrook Phase II Run Name : 1-Yr Pre
Start of Run 04May04 1200 Basin Model Pre-development
End of Run 05May04 1200 Met. Model 1-Year SCS Type II
Execution Time 120ct04 0903 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
Drainage Point 1-1 12.340 05 May 04 0003 0.92327 0.035
Drainage Point 1-2 12.383 05 May 04 0006 1.1045 0.041
DP #1 23.969 05 May 04 0005 2.0278 0.075
HMS * Summary of Results
Project Stoneybrook Phase II Run Name : 1-Yr Post
Start of Run 04May04 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 1-Year SCS Type II
Execution Time 120ct04 0818 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
DP 1-2 To WQ Pond 10.677 05 May 04 0002 0.65458 0.012
Wetland #2 0.21573 05 May 04 0733 0.13475 0.012
DP 1-2 Pond Bypass 12.334 05 May 04 0005 0.98976 0.033
DP #1-2 12.434 05 May 04 0005 1.1245 0.044
DP 1-1 Pond Bypass 12.195 05 May 04 0003 0.89970 0.033
DP #1 24.325 05 May 04 0004 2.0242 0.077
HMS * Summary of Results for Wetland #2
Project Stoneybrook Phase II Run Name : 1-Yr Post
Start of Run 04May04 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 1-Year SCS Type II
Execution Time 120ct04 0810 Control Specs : 1 Minute dT
Computed Results
Peak Inflow 10.677 (cfs) Date/Time of Peak Inflow 05 May 04 0002
Peak Outflow 0.21573 (cfs) Date/Time of Peak Outflow 05 May 04 0733
Total Inflow 1.07 (in) Peak Storage 0.52054(ac-ft)
Total Outflow 0.22 (in) Peak Elevation 446.51(ft)
HMS * Summary of Results
Project : Stoneybrook Phase II Run Name : 10-Yr Post
Start of Run 04May04 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model 10-Year Frequency
Execution Time 30SepO4 1324 Control Specs 1 Minute dT
Hydrologic Discharge Time of Volume Drainage
Element Peak Peak (ac Area
(cfs) ft) (sq mi)
DP 1-2 To WQ Pond 25.946 05 May 04 0009 1.8012 0.012
Wetland #2 12.562 05 May 04 0022 1.2795 0.012
DP 1-2 Pond Bypass 44.786 05 May 04 0013 3.5470 0.033
DP #1-2 55.039 05 May 04 0013 4.8265 0.044
DP 1-1 Pond Bypass 47.043 05 May 04 0010 3.3815 0.033
DP #1 99.920 05 May 04 0012 8.2080 0.077
HMS * Summary of Results for Wetland #2
Project : Stoneybrook Phase II Run Name : 10-Yr Post
Start of Run 04May04 1200
End of Run 05May04 1200
Execution Time 30Sep04 1142
Basin Model Post-development
Met. Model : 10-Year Frequency
Control Specs 1 Minute dT
Computed Results
Peak Inflow 25.946 (cfs) Date/Time of Peak Inflow 05 May 04 0009
Peak Outflow 12.562 (cfs) Date/Time of Peak Outflow 05 May 04 0022
Total Inflow 2.94 (in) Peak Storage 0.68686(ac-ft)
Total Outflow 2.09 (in) Peak Elevation 447.56(ft)
HMS * Summary of Results for Wetland #2
Project Stoneybrook Phase II Run Name : 100-Yr Post
Start of Run 04May04 1200 Basin Model Post-development
End of Run 05May04 1200 Met. Model : 100-Year Frequency
Execution Time : 30Sep04 1142 Control Specs 1 Minute dT
Computed Results
Peak Inflow 42.898 (cfs) Date/Time of Peak Inflow 05 May 04 0009
Peak Outflow 41.985 (cfs) Date/Time of Peak Outflow 05 May 04 0011
Total Inflow 5.26 (in) Peak Storage 0.75637(ac-ft)
Total Outflow 4.41 (in) Peak Elevation 447.98(ft)
Water Quality Pond Design 09-23-04
Wetland #2
William T. O'Daniel, P.E.
Created: 08/15/03
DRAINAGE AREA CHARACTERIZATION
Impervious Area to Pond (Wetland ) = 2.86
Total Drainage Area to Pond (Wetland) = 7.33
% Impervious = 39%
BMP SIZING TABLE
KS = N/A
b = N/A
Average Depth = 3.0
3.0
40%
50%
(3.0' for Constructed Wetland)
4.0
1.73 1.43
1.70 1.70 1.40
2.06 1.73
Total Surface Area Required = 5420 sf (Total Drainage Area*Multiplier from BMP Sizing Table)
Duane K. Stewart and Associates, Inc.
Stage-Storage
Wetland #2
Stage-Storage Function
William T. O'Daniel, P.E.
10/12/2004
Average Incremental Accumulated Estimated
Contour Contour Contour Contour Stage
Contour Stage Area Area Volume Volume w/ S-S Fxn
(feet) (feet) (SF) (SF) (CF) (CF) (feet)
A
444 0 - 1.0 61 5976 5976 5976 1.00
446 a 3.0 ns 6492 12983 18959 2.97
4A8 t) 5.0 7184 14368 33327 5.04
Storage vs. Stage
35000
30000 y = 5953x'0652
25000 R2 = 0.9999
LL
V 20000
c 15000
y
10000
5000
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Stage (feet)
b
= x'5
6i;S?
6= 1.0652
Duane K. Stewart and Associates
SIPHON
Stormwater Wetland #2
Inverted Siplt
D siphon =
No. siphons =
Ks =
b=
Cd siphon =
Siphon Invert
=
Volume @ Normal Pool =
Basin Invert
=
on Design Sheet
1.5 inches
1
5953
1.0652
0.60
443.00 feet
0 CF
443.00 feet
WSEL
(feet) Vol. Stored
(cf) Siphon Flow
(cfs) Avg. Flow
(cfs) Incr. Vol.
(cf) Incr. Time
(sec)
446.500 22609 0.109
446.237 20800 0.105 0.107 1809 16864
445.973 19001 0.101 0.103 1799 17487
445.710 17213 0.096 0.098 1789 18192
445.446 15435 0.091 0.094 1777 19002
445.183 13671 0.086 0.088 1765 19944
444.919 .11920 0.080 0.083 1751 21060
444.656 10185 0.074 0.077 1735 22413
444.392 8467 0.068 0.071 1717 24105
444.129 6771 0.061 0.064 1696 26309
443.865 5101 0.053 0.057 1670 29364
443.602 3464 0.043 0.048 1637 34044
443.338 1875 0.031 0.037 1589 42792
443.075 374 0.007 0.019 1500 79434
Drawdown Time = 4.29 days
By comparison, if calculated by the average head over the orifice (assuming
average head is half the total depth), the result would be:
Average driving head on orifice = 1.469 feet
Orifice composite loss coefficient = 0.600
X-Sectional area of 1 - 1.5" inverted siphon = 0.012 ft2
Q = 0.0716 cfs
Drawdown Time = Volume / Flowrate / 86400 (sec/day)
Drawdown Time = 3.65 days
William T. O'Daniel, P.E.
10/12/2004
Conclusion : Use 1 - 1.5" Diameter PVC Inverted Siphon to drawdown the accumulated
volume from the 1.0 " storm runoff, with a required time of about 3.2 days.
Duane K. Stewart and Associates, Inc.
Detention Design Rating Curve
Wetland #2
Outlet Stucture Information
Riser Diameter = 4.0 ft
Riser Crest Elevation = 446.5 ft
Barrel Diameter = 15 inches
Barrel Invert Elev = 443.0 ft
Barrel Manning's'n' = 0.013
Barrel Length = 60 ft
Cd = 0.59
Riser Weir Coefficient = 3.0
Tailwater Elevation = 444.0 ft
Ke = 1.5
1.5-inch Diameter Orifice
Orifice Size = 1.5 inches
Orifice Elevation = 443 ft
Weir Information
Length = 30.0
Elevation = 447.50
Weir Coefficient = 3.0
Stage-Storage Information
KS = 5953
b = 1.0652
Starting WSE = 443
William T. O'Daniel, P.E.
9/30/2004

Elevation
Storage Total
Outflow Riser as
Weir Riser as
Orifice Barrel
Orifice Barrel
Tailwater
Orifice
Weir
[ft] [acre-feet] [cfs] [cfs] [cfs] [cfs] [cfs] [cfs] [cfs]
443.00 0.000 0.0 0.0 0.0 0.0 0.0 0.00 0.0
443.10 0.012 0.0 0.0 0.0 0.0 0.0 0.01 0.0
443.20 0:025 0.0 0.0 0.0 0.0 0.0 0.02 0.0
443.30 0.038 0.0 0.0 0.0 0.0 0.0 0.03 0.0
443.40 0.051 0.0 0.0 0.0 0.0 0.0 0.03 0.0
443.50 0.065 0.0 0.0 0.0 0.0 0.0 0.04 0.0
443.60 0.079 0.0 0.0 0.0 0.0 0.0 0.04 0.0
443.70 0.093 0.0 0.0 0.0 0.0 0.0 0.05 0.0
443.80 0.108 0.0 0.0 0.0 0.0 0.0 0.05 0.0
443.90 0.122 0.1 0.0 0.0 0.0 0.0 0.05 0.0
444.00 0.137 0.1 0.0 0.0 0.0 0.0 0.06 0.0
444.10 0.151 0.1 0.0 0.0 0.0 0.0 0.06 0.0
444.20 ;0.166 0.1 0.0 0.0 0.0 0.0 0.06 0.0
444.30 0.181 0.1 0.0 0.0 0.0 0.0 0.06 0.0
444.40 0.196 0.1 0.0 0.0 0.0 0.0 0.07 0.0
444.50 0.210 0.1 0.0 0.0 0.0 0.0 0.07 0.0
444.60 0.225 0.1 0.0 0.0 0.0 0.0 0.07 0.0
444.70 0.241 0.1 0.0 0.0 0.0 0.0 0.07 0.0
444.80 0.256 0.1 0.0 0.0 0.0 0.0 0.08 0.0
444.90 0.271 0.1 0.0 0.0 0.0 0.0 0.08 0.0
445.00 ,0.286 0.1 0.0 0.0 0.0 0.0 0.08 _ 0.0
445.10 0.301 0.1 0.0 0.0 0.0 0.0 0.08 0.0
Duane K. Stuart and Associates
Detention Design Rating Curve
Wetland #2
William T. O'Daniel, P.E.
9/30/2004
445.20 0.317 0.1 0.0 0.0 0.0 0.0 0.08 0.0
445.30 0.332 0.1 0.0 0.0 0.0 0.0 0.09 0.0
445.40 -0.347 0.1 0.0 0.0 0.0 0.0 0.09 0.0
445.50 '0.363 0.1 0.0 0.0 0.0 0.0 0.09 0.0
445.60 0.378 0.1 0.0 0.0 0.0 0.0 0.09 0.0
445.70 0.394 0.1 0.0 0.0 0.0 0.0 0.09 0.0
445.80 0.409 0.1 0.0 0.0 0.0 0.0 0.10 0.0
445.90 0.425 0.1 0.0 0.0 0.0 0.0 0.10 0.0
446.00 0.440 0.1 0.0 0.0 0.0 0.0 0.10 0.0
446.10 0.456 0.1 0.0 0.0 0.0 0.0 0.10 0.0
446.20 0.472 0.1 0.0 0.0 0.0 0.0 0.10 0.0
446.30 0.487 0.1 0.0 0.0 0.0 0.0 0.10 0.0
446.40 0.503 0.1 0.0 0.0 0.0 0.0 0.11 0.0
446.50 0.519 0.1 0.0 0.0 9.8 9.1 0.11 0.0
446.60 0.535 1.3 1.2 18.8 10.0 9.3 0.11 0.0
446.70 0.551 3.5 3.4 26.6 10.2 9.5 0.11 0.0
446.80 '0.567 6.3 6.2 32.6 10.3 9.7 0.11 0.0
446.90 ° 0.582 9.7 9.5 37.6 10.5 9.8 0.11 0.0
447.00 `0.598 10.1 13.3 42.1 10.7 10.0 0.12 0.0
447.10 0.614 10.3 17.5 46.1 10.8 10.2 0.12 0.0
447.20 0.630 10.4 22.1 49.8 11.0 10.3 0.12 0.0
447.30 0.646 10.6 27.0 53.2 11.1 10.5 0.12 0.0
447.40 -0.662 10.8 32.2 56.4 11.3 10.6 0.12 0.0
447.50 ,'0.678 10.9 37.7 59.5 11.4 10.8 0.12 0.0
447.60 0.694 13.9 43.5 62.4 11.6 11.0 0.12 2.8
447.70 0.711 19.3 49.6 65.2 11.7 11.1 0.12 8.0
447.80 0.727 26.2 55.9 67.8 11.9 11.3 0.13 14.8
447.90 ',0.743 34.3 62.4 70.4 12.0 11.4 0.13 22.8
448.00 '0.759 43.5 69.3 - 72.9 12.1 11.5 0.13 31.8
Duane K. Stuart and Associates
QUALPOND
Wetland
William T. O'Daniel, P.E.
10/12/2004
Water Quality Pond Design Sheet
Average Incremental Accumulated Estimated
Contour Contour Contour Contour Stage
Contour Stage Area Area Volume Volume w/ S-S Fxn
(feet) (feet) (SF) (SF) (CF) (CF) (feet)
4=13.0 0.0 5798 -
444.0- 1.0 6153 5976 5976 5976 1.00
1C?.( 3.0 6810 6492 12983 18959 2.97
48.0 5.0 75 18 7184 14368 33327 5.04
Storage vs. Stage
35000
52
30000 y = 5953x'06R2 = 0.9999
25000--
20000-
a?
15000
10000
5000
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Stage (feet)
Ks = 5953
b = 1.0652
Duane K. Stewart and Associates, Inc.
QUALPOND
Wetland
William T. O'Daniel, P.E.
10/12/2004
Calculation of Runoff Volume required for storage
The runoff to the pond for the 1" storm detention requirement is calculated using the SCS curve
number method. Impervious areas that directly enter the pond are counted as Directly Connected
Impervious Areas (DCIAs). No infiltration calculation will be provided for these areas. Areas
not directly connected will be accounted for in a composite curve number.
From SCS Soils Survey map, predominant hydrologic soil type = D
Using basic SCS runoff methodology, with no adjustments made
to initial abstractions (0.2*S and 0.8*S).
Impervious Area, directly connected (DCIA) = 2.86 acres
@CN= 98
Other areas draining to pond (not DCIA) = 4.47 acres
@ CN = 70
Runoff from DCIAs ==>
Precipitation amount = 1.0 inches
S = 0.204 inches (calculated)
Q* = 0.791 inches (calculated)
Runoff volume = 8211 CF
Runoff from non-connected areas ==>
Precipitation amount = 1.0 inches
S = 4.286 inches (calculated)
Q* = 0.005 inches (calculated)
Runoff volume =
75 CF
Therefore, total runoff from precipitation in question = 8286 CF
This amount of runoff must be stored in the pond above normal pool elevation,
and be released in a period of two (2) to five (5) days, by an inverted PVC
siphon, the invert end of which is set at permanent pool elevation.
Duane K. Stewart and Associates, Inc.
QUALPOND
Wetland
William T. O'Daniel, P.E.
10/12/2004
Calculation of depth required for runoff storage pool (above normal pool)
Normal pool depth (above invert) = 0.00 feet
Storage provided at permanent pool depth = 0 CF (calculated)
Total storage required for normal + storage pool = 8286 CF
Stage (above invert) associated with this storage = 1.36 feet
Therefore, depth required above normal pool for storm storage = 1.36 feet
16.37 inches
Therefore set crest of principal spillway at stage = 3.50 feet
and EL = 446.50 feet
At principal spillway crest, storm pool storage provided = 22609 CF
Duane K. Stewart and Associates, Inc.
conc riser anti-flotation
Wetland #2
William T. O'Daniel, P.E.
10/11/2004
Manhole Riser/Barrel Anti-Flotation Calculation Sheet
Input Data =>
Inside diameter of manhole =
Wall thickness of manhole =
Base thickness of manhole =
Base diameter of manhole =
Inside height of Manhole =
Concrete unit weight =
OD of barrel exiting manhole =
Size of drain pipe (if present) =
Trash Rack water displacement =
Concrete Present =>
Total amount of concrete:
Base of Manhole =
Manhole Walls =
4.0 feet
5.0 inches
6.0 inches
4.0 feet
3.5 feet
142.0 PCF
20.0 inches
1.5 inches
40.0 CF
6.283 CF
20.235 CF
Adjust for openings:
Opening for barrel =
Opening for drain pipe =
Total Concrete present, adjusted for openings =
Weight of concrete present =
0.909 CF
0.005 CF
Amount of water displaced =>
Displacement by concrete = 25.604 CF
Displacement by open air in riser = 43.982 CF
Displacement by trash rack = 40.000 CF
Vote: NC Products lists unit wt. of
manhole concrete at 142 PCF.
25.604 CF
3636 lbs
Total water displaced by riseribarrel structure = 109.586 CF
Weight of water displaced = 6838 Ibs
Duane K. Stewart and Associates, Inc.
conc riser anti-flotation William T. O'Daniel, P.E.
Wetland #2 10/11/2004
Calculate amount of concrete to be added to riser =>
Safety factor to use = 1.15 (recommend 1.15 or higher)
Must add = 4228 lbs concrete for buoyancy
Concrete unit weight for use = 142 PCF (note above observation for NCP concrete)
Buoyant weight of this concrete = 79.60 PCF
Buoyant, with safety factor applied = 69.22 PCF
Therefore, must add = 61.085 CF of concrete
Standard based described above = 6.283 CF of concrete
Therefore, base design must have = 67.368 CF of concrete
Calculate size of base for riser assembly =>
Diameter = 6.000 feet
Thickness = 30.0 inches
Concrete Present = 70.686 CF OK
Check validity of base as designed =>
Total Water Displaced = 173.989 CF
Total Concrete Present = 90.007 CF
Total Water Displaced = 10857 lbs
Total Concrete Present = 12781 lbs
Actual safety factor = 1.18 OK
Results of design =>
Base diameter = 6.00 feet
Base Thickness = 30.00 inches
CY of concrete total in base = 2.50 CY
Concrete unit weight in added base >= 142 PCF
Duane K. Stewart and Associates, Inc.
Antiseep - Wetland #2
Wetland #2
Anti-Seep Collar Design Sheet
This sheet will, given the barrel length of interest and minimum seep collar
projection from the barrel, determine the number of anti-seep collars to place
along the barrel section, and the expected spacing of the collars.
Design Requirements =>
Anti-seep collars shall increase the flow path along the barrel by 15%.
Anti-seep collars shall be spaced a maximum of 14X the minimum collar projection
or 25 feet, whichever is less.
Anti-Seep Collar Design =>
William T. O'Daniel, P.E.
10/11/2004
Flow Length Min. Calc'd # Max. # of i `se
Pond along barrel Projection of collars Spacing collars to ` 5liacing Spacing
ID (feet) (feet) required (feet) use (feet) OK?
Wetland #2 62.0 2.33 2.00 25 :00 20.666667= YES
Note : If spacing to use is greater than the maximum spacing, add collars until the
spacing to use is equal to or less than the maximum spacing allowable for the collar
design. Anti-seep collars shall be used under the structural fill portions of all berms/dams
unless an approved drainage diaphragm is present at the downstream end of the barrel.
Duane K Stewart and Associates, Inc.

Pipe Outlet Protection
Wetland #2
Project Name: Stoneybrook Cottages Designer: O'Daniel
Project Number: 1061-02.40 Date: October 11, 2004
All Calculations are based on the North Carolina Erosion and Sedimentation Control Manual.
Wetland #2
Flow = Q10 = 12.9 cfs
Pipe Dia. = Do = 15 in
Tailwater Depth = 15 in
Length of Apron = La =
d50 Rip Rap Size =
dmax = 1.5(d50) =
Apron Thickness = 1.5(dmax) _
Apron Width =
28 ft use figure 8.06b
5 in use figure 8.06b
7.5 in (calculated)
11.25 in (calculated)
12.45 ft Do + 0.4La
Check Stone Size and Apron Length Using NYDOT Method:
Velocity = Vo = Q10/Area of Pipe = 10.51184 ft/s (calculated)
Rip Rap Zone = 2 (figure 8.06. b. 1)
Rip Rap Classification = B (figure 8.06.b.2)
Length of Apron = La (nydot) = 7.5 ft (figure 8.06.b.2)
Apron Width = 3(Do) = 3.75 ft (calculated)
Apron Thickness = 18 in
USE: Class B Rip Rap
Length = 28 ft min = 10 ft
Width = 14 ft
Thickness = 18 in min = 12 in
Page 1
4-
Al A
Michael F. Easley, Governor
{( William G. Ross Jr., Secretary
North Carolina partment of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
September 4, 2003
DWQ# 03-0728
Durham County
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Rd., Suite H-106
Durham,;NC, 27705
APPROYAL.of Of Water Quality Certification and Neuse River Buffer Rules with Additionat Conditions
Dear Mr. Stewart:
You. have our approval, in accordance with the attached conditions, to place peririanent fill in 32 linear feet of perennial
streams and 0.21 acre of protected Neuse Buffers in order to construct the Stoneybrook Cottages Phase II Subdivision in
Durham County, as described in your application received by the Division of1Nater Quality on`June 16;2003, and in
additional correspondence received July 29, August 21, and September 4, 2003. After reviewing your application, we have
determined that this fill is covered by General Water Quality Certification Number 3402, which can be viewed on our web
site at http•//h2o.enr.state.nc:us/ncwetlands. This Certification allows.you to use Nationwide Permit Number 39 when it is
issued by the U.S. Army Corps of Engineers. This approval is also valid for the Neuse River Buffer Rules (15A NCAC 213
.0233). In addition, you should get any other federal, state or local permits before you go ahead with your project including
(but not limited to) 6ediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. Also this
approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If -you change your
:project, you must notify us in writing and you may be required to send us a new application} for a new certification. If. the
property is sold, the new owner must be given a copy of the Certification and approval letter and.,is-thersby responsible for
complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the .
conditions listed in the attached certification, as well as the additional condition listed below:
1. Deed notifications or similar mechanisms shall be placed on all lots with. remaining jurisdictional wetlands and waters or
areas within 50 feet of all streams and ponds on the property. These mechanisms shall be put in place within 30 days of
the date of this letter or the issuance of the 404 Permit (whichever is later). A sample deed notification format can be
downloaded from the 401/Wetlands Unit web site at httpJ/h2o.enr.state.ne.us/ncwetiands ;
2 The culverts required for this project shall be installed in such a 'manner that the originai'stream profile's are not altered
(i.e. the depth of the channel must not be reduced by a widening of the streambed). Existing stream dimensions
(including the pattern and profile) are to be maintained above and below locations of each culvert. The culverts shall be
designed and installed to allow for aquatic fife movement as well as to prevent head cutting of the streams. If any of the
existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a
perched manner, the pipes shall be removed and re-installed correctly.
The Applicant must submit a plan and receive written approval from this Office to address any head cutting that will
occur as a result of this project (e.g., use of cross vanes downstream of the culvert).
Use of native vegetation and other soft stream bank stabilization techniques must be used where practicable instead of
rip rap or other bank hardening methods; If rip-rap is necessary, it shall not be placed in the stream bed, unless
specifically approved by the Division of Water Quality;
3. An additional condition is that all constructed stormwater conveyance outlets shall be directed as diffuse flow at non-
erosive velocities through the protected stream buffers such that it will not re-concentrate before discharging into a
stream as identified within 15A NCAC 213.0233 (5);
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone] Customer Service
1 800 623-7748
Q
t
An additional condition is that a ,?nal, written stormwater management plan -,tiall be approved in writing by this Office

4.
before the impacts specified in this Certification occur per condition no. 3 in General Certification 3402. The stormwater
management plan must include plans and specifications for storrnwater management facilities that are appropriate for
surface waters classified as Class C and deigned to remove 85% TSS according to the most recent version'of the NC
DENR Stormwater Best Management Practices Manual. These facilities must be designed to treat the runoff from the
entire project, unless otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building
is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the
stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as
approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural
stormwater practices shall be made without written authorization from the Division of Water Quality;
5. You are required to return the attached Certification of Completion form to notify DWQ when all work included in the 401
Certification has been completed.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act
within 60, days of the date that you receive this letter. To ask for a hearing, send a written petition which conforms to
Chapter 1506 of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing.
; This-letter completes the review of the Division.of Water Quality under Section 401 of the Clean Water Act. If you have
any,questions, please telephone Steve Mitchell in the DWQ Raleigh Regional Office at [phone] or Cyndi Karoly in
the Central,Office in Raleigh 919-733-9721.
Sincerely,
Alan W. Klimek, P.E.
AWK(cbk
Attachments
cc: Corps of Engineers Raleigh Regulatory Field Office
Raleigh DWQ Regional Office
Central Files
File Copy
John Schrum, 3715 University Drive, Durham, NC, 27707
030728
F ATE Michael F. Easley, Governor
Q R
OCR Q? William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
`
T Alan W. Klimek, P.E. Director
Division of Water Quality
fl 'C
September 4, 2003
DW Q# 03-0728
Durham County
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Rd., Suite H-106
Durham, NC, 27705
APPROVAL of 401 Water Quality Certification and Neuse River Buffer Rules with Additional Conditions
Dear Mr. Stewart:
You have our approval, in accordance with the attached conditions, to place permanent fill in 32 linear feet of perennial
streams and 0.21 acre of protected Neuse Buffers in order to construct the Stoneybrook Cottages Phase II Subdivision in
Durham County, as described in your application received by the Division of Water Quality on June 16, 2003, and in
additional correspondence received July 29, August 21, and September 4, 2003. After reviewing your application, we have
determined that this fill is covered by General Water Quality Certification Number 3402, which can be viewed on our web
site at http://h2o.enr.state.nc.us/ncwetiands. This Certification allows you to use Nationwide Permit Number 39 when it is
issued by the U.S. Army Corps of Engineers. This approval is also valid for the Neuse River Buffer Rules (15A NCAC 2B
.0233). In addition, you should.get any other federal, state or local permits before you go ahead with your project including
(but not limited to) Sediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. Also this
approval will expire when the accompanying 404 permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If you change your
project, you must notify us in writing and you maybe required to send us anew application for anew certification. If. the
property is sold, the new owner must be given a copy of the Certification and approval letter and: is thereby responsible for
complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the
conditions listed in the attached certification, as well as the additional condition listed below:
1. Deed notifications or similar mechanisms shall be placed on all lots with remaining jurisdictional wetlands and waters or
areas within 50 feet of all streams and ponds on the property. These mechanisms shall be put in place within 30 days of
the date of this letter or the issuance of the 404 Permit (whichever is later). A sample deed notification format can be
downloaded from the 401/Wetlands Unit web site at http://h2o.enr.state.nc.us/ncwetlands ;
2. The culverts required for this project shall be installed in such a manner that the original stream profiles are not altered
(i.e. the depth of the channel must not be reduced by a widening of the streambed). Existing stream dimensions
(including the pattern and profile) are to be maintained above and below locations of each culvert. The culverts shall be
designed and installed to allow for aquatic life movement as well as to prevent head cutting of the streams. If any of the
existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a
perched manner, the pipes shall be removed and re-installed correctly.
The Applicant must submit a plan and receive written approval from this Office to address any head cutting that will
occur as a result of this project (e.g., use of cross vanes downstream of the culvert).
Use of native vegetation and other soft stream bank stabilization techniques must be used where practicable instead of
rip rap or other bank hardening methods; If rip-rap is necessary, it shall not be placed in the stream bed, unless
specifically approved by the Division of Water Quality;
3. An additional condition is that all constructed stormwater conveyance outlets shall be directed as diffuse flow at non-
erosive velocities through the protected stream buffers such that it will not re-concentrate before discharging into a
stream as identified within 15A NCAC 213 .0233 (5);
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone] Customer Service
1 800 623-7748
4. An additional condition is that a final, written stormwater management plan shall be approved in writing by this Office
before the impacts specified in this Certification occur per condition no. 3 in General Certification 3402. The stormwater
management plan must include plans and specifications for stormwater management facilities that are appropriate for
surface waters classified as Class C and deigned to remove 85% TSS according to the most recent version of the NC
DENR Stormwater Best Management Practices Manual. These facilities must be designed to treat the runoff from the
entire project, unless otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building
is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the
stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as
approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural
stormwater practices shall be made without written authorization from the Division of Water Quality;
5. You are required to return the attached Certification of Completion form to notify DWQ when all work included in the 401
Certification has been completed.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act
within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition which conforms to
Chapter .150B of the Noah Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have
any questions, please telephone Steve Mitchell in the DWQ Raleigh Regional Office at [phone] or Cyndi Karoly in
the Central Office in Raleigh 919-733-9721.
Sincerely,
Alan W. Klimek, P.E.

AW K/cbk
Attachments
cc: Corps of Engineers Raleigh Regulatory Field Office
Raleigh DWQ Regional Office
Central Files
File Copy
John Schrum, 3715 University Drive, Durham, NC, 27707
030728
Stoneybrook Phase R - DWQ Project # 03-0728
Subject: Stoneybrook Phase II - DWQ Project # 03-0728
Date: Thu, 4 Sep 2003 16:23:48 -0400
From: "John Schrum" <[e-mail]>
To: <[e-mail]>
Cyndi,
Per our phone conversation today regarding information need for the revised PCN, here are the numbers you
requested:
Wetland Area Impact = 0.0 acres
Buffered Stream Impact = 32 LF
Area of Neuse Buffer Impact = 0.21 AC.
Let me know if I can answer any more questions or help you in any other way.
Thanks,
John E. Schrum, P.E.
Duane K. Stewart and Associates, Inc.
3715 University Drive
Durham, North Carolina 27707
Phone: [phone]
Fax: [phone]
1 of 1 9/4/03 4:31 PM
-
Duane K. Stewart
& ASSOCIATES, INC.
CONSULTING
ENGINEERS
Civil • Sanitary
Environmental
Planning • Design
Survey

LETTER OF TRANSMITTAL
TO: FROM:
Ms. Cyndi Karoly John Schrum
COMPANY: DATE:
North Carolina Division of Water 8/19/2003
Quality
401 Wetland Certification Unit
1650 Mail Services Center
Raleigh, North Carolina 27699-1650
RE: PROJECT NUMBER:
Stoneybrook Phase II 1061-02
DWQ # 030728
ITEMS TRANSMITTED:
Comment response letter, accompanying calculations and watershed map.
? FOR YOUR USE ® FOR REVIEW AND COMMENT ? AS REQUES'T'ED ? PLEASE REPLY
NOTES/COMMENTS:
NELMD81401 GROUP
AUG s 1 2003
4ATERQUALITvSECTIGN
3715 University Drive
Durham, NC 27707
[phone]
fax [phone]
e-mail: [e-mail]
www.dksa-tsi.com
Duane Stewart
& ASSOCIATES, INC.
CONSULTING
ENGINEERS
Civil • Sanitary
Environmental
Planning • Design
Survey
August 14, 2003
Cyndi Karoly
Environmental Specialist III
North Carolina Division of Water Quality
401 Wetlands Certification Unit
1650 Mail Services Center
Raleigh, North Carolina 27699-1650
Re:Stoneybrook Phase II
401 Water Quality Certification
DWQ # 030728
Dear Ms. Karoly,
YVETIAROS1401 GRov
AUG a - 200;
ATERQUALITYSECTION
Our office is in receipt of comments made by Mr. Todd St. John regarding
application for a 401 Water Quality Certification for stream, wetland and
buffer impacts associated with the Stoneybrook Cottages Phase II project
located in Durham County. The comments are repeated below, with
responses shown in bold and italicized.
1. The pond alone is not adequate according to GC 3402. It need(s) to be a
wetland, bioretention area or pond with a forested filter strip.
A stormwater management facility, in the form of a water quality pond
or a stormwater wetland, will be designed and constructed per the
latest North Carolina Division of Water Quality Best Management
Practices Manual. An exhibit showing the proposed location of the
facility is included with this letter. This exhibit shows the area that is
set aside for the stormwater management facility. This facility will
serve to provide 85% TSS removal, nitrogen removal and detention of
the peak flow resulting from the 1, 2, and 10 year storm events.
Additionally, regardless of the final choice of the type of facility to be
utilized, a level spreader or plunge pool will be provided that is
designed according to NC DWQ draft level spreader design (October
10, 2001) or any level spreader design provided by NC DWQ that may
supercede these guidelines between now and the time that the design is
conducted.
3715 University Drive
Durham, NC 27707
[phone]
fax [phone]
e-mail: [e-mail]
www.dksa-tsi.com
2. It is not clear if the proposed pond is adequately sized as I could not determine
the average permanent pool depth from the info submitted. Also, the storage
data indicates the pond is smaller than what they said they would provide
anyway.
Surface area calculations are provided that demonstrate adequate
surface area is provided even if the average depth of water is 3 -feet.
Use of the 3 -foot average depth is also the method utilized to size the
surface area of stormwater wetland facilities, and, therefore, the
footprint proposed for the facility will work whether the final facility is
a water quality pond or a stormwater wetland. The surface area
provided in the Pre-Construction Notification Application Form is
incorrect. In this form, the expected pond surface area is listed as
10,800 sf. However, this represents the preliminary surface area of the
pond resulting from the runoff produced by the 10 year storm event.
The proposed stormwater facility will be designed to comply with the
minimum surface area as required by the latest version of NC DWQ's
Best Management Practices Manual.
3. It is not clear where the pond is on the site. Is it the existing pond that is
currently buffered and in the stream? If so, did they size it for the entire area
draining to it? Is there diffuse flow through the buffer draining to it?
The pond is now clearly labeled on the exhibit provided. The pond is
located in a designated open space, and not in a Neuse buffer. It will
treat the majority of the impervious area proposed for the project. A
drainage map showing the post-development proposed flow regime is
included with this letter. As stated above, the stormwater facility will
be designed in full compliance with the latest NC DWQ Stormwater
Best Management Practices Manual. This includes sizing of the
surface area and containment of the runoff resulting from the 1-inch
rainfall. As the proposed facility will not be located in the buffer,
diffuse flow will not be provided into the facility, however, a level
spreader will be added to the outlet structure of the facility.
Feel free to call me at [phone] should you have any questions or need
further assistance.
Thanks,
Duane K. SteJ?wart and Associates, Inc.
J hn E. Sc , P.f 6,
roject Engineer
attachments
Water Quality Pond Design John E. Schrum, P.E.
SheetI Created: 08/15/03
DRAINAGE AREA CHARACTERIZATION
Impervious Area to Pond (Wetland ) = 3.38
Total Drainage Area to Pond (Wetland) = 9.30
% Impervious = 36%
BMP SIZING TABLE
Ks = N/A
b = N/A
Average Depth = 3.0
3.0
30%
40%
(3.0' for Constructed Wetland)
4.0
1.34 1.08
1.59 1.59 1.30
1.73 1.43
Total Surface Area Required = 6431 sf (Total Drainage Area*Multiplier from BMP Sizing Table)
Duane K. Stewart and Associates, Inc.
Duane K. Stewart
& ASSOCIATES, INC.
July 29, 2003
A, ?, t ,, ;_i
CONSULTING
ENGINEERS
Civil - Sanitary
Environmental
Planning • Design
Survey
3715 University Drive
Durham, NC 27707
(919),490-2999
fax [phone]
e-mail: [e-mail]
www.dksa-tsi.com
Ms. Cyndi Karoly
Division of Water Quality
Wetlands/401 Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604-2260
WETLANDS 1101 CROUP
NATER OU ,Ty SECTION
SUBJECT: Stoneybrook Cottages Phase II
DWQ # 03-0728
1061-02.10
Dear Cyndi:
We are resubmitting two copies of the site plan showing stream buffer
impacts. The attached plan shows the additional information Bryan Staley
and I discussed with you and Steve Mitchell in your office on July 17, 2003.
Please let me know if you, or Todd, need additional information.
From Todd's comments, it appears he may be confusing this site with the
Phase I site. This pond is not located in the stream buffer which would
require a wetland detention. The calculations show that the pond will require Lj
about 10,000 sq. ft. of area, which is shown on the plan. \ e? e? 4?
VSJ
Sincerely,
Duane K. Stewart & Associates, Inc.
/fig'
Todd O'Daniel, P. E.
Project Manager
attachment
wl-
WATER
QG
r
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
July 22, 2003
To: Cyndi
From: Todd
Re: Stoneybrook Phase II
DWQ# 030728
Durham County
I looked over the stormwater plan. There are several issues that I could not figure out.
1) The pond alone is not adequate according to GC 3402. It need to be a wetland, bioretention area or pond with a
forested filter strip.
2) It is not clear if the proposed pond is adequately sized as I could not determine the average permanent pool depth
from the info submitted. Also, the storage data indicates the pond is smaller than what they said they would provide
anyway.
3) It is not clear where the pond is on the site. Is it the existing pond that is currently buffered and in the stream? If so,
did they size it for the entire area draining to it? Is there diffuse flow through the buffer draining to it?
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetiands/
Duane K. Stewart
& ASSOCIATES, INC.
CONSULTING
ENGINEERS
Civil • Sanitary
Environmental
Planning • Design
Survey
Stoneybrook Cottage Phase II
Preliminary Stormwater BMP Calculations
• %dvd
40 'V
of
SEAL /
025449
•,???AN? F. A3
Site Location
Cole Mill Rd.
Durham County, N.C.
Prepared By
Duane K. Stewart & Associates, Inc.
3715 University Drive
Durham, NC 27707
Engineer
Bryan F. Staley, P.E.
Applicant/Client
Stelic Enterprises, Inc.
DATE: July 2, 2003
3715 University Drive
Durham, NC 27707
[phone]
fax [phone]
e-mail: [e-mail]
www.dksa-tsi.com
Wet Detention Pond -- Preliminary Design
PROJECT: Stonybrook Cottages Phase II Wet Detention Pond
Date: 3/4/03
n=Q!rZ1M cn1 rill ATIONS
Site Area = 7.87 ac.
Impervious Area = 3.38 ac.
% Impervious = 42.9%
Design Storm (in) = 1 in.
SA/DA Ratio = 1.52%
Permanent Pool Surface Area Required = 5,211 s.f.
0.120 ac.
Runoff Coeff. (Rv) = 0.437 in/in
Runoff Volume for Design Storm = 0.286 ac-ft
12,471 cu. ft.
ACTUAL PARAMETERS PROVIDED
Permanent Pool Surface Area = 5,211 s.f.
Design Perm. Pool Surface Area = 5,211 s.f.
Storage for Runoff Volume = 32,810 cu. ft.
Design Runoff Volume = 12,471 cu. ft.
Reservoir Report Page
Hydraflow Hydrographs by Intelisolve
Reservoir No. 1 -New Pond1
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cuft) Total storage (cuft)
0.00 462.00 4,200 0 0
1.00 463.00 5,016 4,608 4,608
2.00 464.00 5,904 5,460 10,068
3.00 465.00 6,864 6,384 16,452
4.00 466.00 7,896 7,380 23,832
5.00 467.00 9,776 8,836 32,668
50
5 467.50 10,791 5,142 37,810
.
Culvert / Orifice Structures Weir Structures
[A] [B] [C] [D] [A] IB] [C] [D]
Rise in = 18.0 0.0 0.0 0.0 Crest Len ft = 12.57 30.00 0.00 0.00
Span in = 18.0 0.0 0.0 0.0 Crest El. It = 466.25 466.50 0.00 0.00
No. Barrels = 1 0 0 0 Weir Coeff. = 3.33 2.60 0.00 0.00
Invert El. It = 460.50 0.00 0.00 0.00 Weir Type = Riser Broad - -
Length It = 50.0 0.0 0.0 0.0 Multistage = Yes No No No
Slope % = 0.01 0.00 0.00 0.00
N-Value = .013 .000 .000 .000
Orif. Coeff. = 0.60 0.00 0.00 0.00
Multistage = n/a No No No ExfoItration Rate = 0.00 in/hr/sgft Tailwater Elev. = 0.00 ft
Note: All outflows have been analyzed under inlet and outlet control.
Stage / S torage / Discharge Table
Stage Storage Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D ELI Total
ft cuft It cfs cfs cfs cfs cfs cfs cfs cfs afs cfs
00
0 0 462.00 0.00 -- - - - 0.00 0.00 -- - --- 0.00
.
1
00 608 463.00 0.65
4 - -- --- 0.00 0.00 - -- - 0.00
.
2
00 ,
068 464.00 0.65
10 - -- - 0.00 0.00 -- - - 0.00
.
3.00 ,
16,452 465.00 0.65 -- -- - 0.00 0.00 --- - --- 0.00
4
00 832 466.00 0.65
23 -- --- - 0.00 0.00 -- -- - 0.00
.
00
5 ,
668 467.00 19.95
32 - - - 19.95 27.58 -- -- --- 47.53
.
5.50 ,
37,810 467.50 21.17 - - - 21.16 78.00 - - - 99.16
2 -Reservoir -1 Yr - Qp = 7.51 cfs
25-
20-
15-
10-
5-
0,
0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0
Time (hrs)
/ Hyd. 1 / Hyd. 2
2 -Reservoir -1 Yr -Max. El. = 466.54 ft
467-
46
? 465
%moo
a?
W 464-
463-
4621 0.0 2.5 5.0 7.5 9.9 .8
Time (hrs)

2.4 14
.4 14
6
6
5
.9 17..4 4 19.9 2222.4 24
. 17 19.9 .4 24
Hydrograph Report
Page 1
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 1 yrs
= 7.87 ac
= 0.0%
= TR55
= 3.00 in
= 24 hrs
Peak discharge = 20.24 cfs
Time interval = 5 min
Curve number = 91
Hydraulic length = 0 ft
Time of conc. (Tc) = 8.7 min
Distribution = Type II
Shape factor = 484
Hydrograph Volume = 55,472 cult
Hydrograph Discharge Table
Time -- Outflow
(hrs cfs)
8.83 0.21
9.67 0.29
10.50 0.53
11.33 1.15
12.17 10.02
13.00 1.38
13.83 0.88
14.67 0.68
15.50 0.56
16.33 0.46
17.17 0.42
18.00 0.38
18.83 0.34
19.67 0.29
20.50 0.27
21.33 0.26
22.17 0.25
23.00 0.24
23.83 0.23
.End
Hydrograph Report
Hydraflow Hydrographs by Intelisolve
Page 1
Hyd. No. 2
Hydrograph type = Reservoir
Storm frequency = 1 yrs
Inflow hyd. No. = 1
Max. Elevation = 466.54 ft
Peak discharge
Time interval
Reservoir name
Max. Storage
= 7.51 cfs
= 5 min
= New Pond1
= 28,591 cuft
Storage Indication method used.
Hydrograph Discharge Table
Outflow hydrograph volume = 29,875 cuft
Time Inflow Elevation Civ A Clv B Clv C Civ D Wr A Wr B Wr C Wr D Exfil Outflow
(hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs
12.50 2.41 466.42 2.92 ---- ----- ---- 2.92 0.00 ----- ----- ----- 2.92
13.33 1.12 466.34 1.32 ----- ----- ---- 1.21 ____ ____ 1.21
14.17 0.75 466.32 0.95 ----- ----- ----- 0.80 ----- ----- ----- ----- 0.80
15.00 0.63 466.31 0.81 ---- ----- ----- 0.65 ---- ----- ----- ----- 0.65
15.83 0.52 466.30 0.71 ----- ----- ----- 0.53 ----- ----- ----- ----- 0.53
16.67 0.45 466.30 0.65 ----- ----- ----- 0.46 ----- ----- ----- ----- 0.46
17.50 0.40 466.29 0.65 ----- ----- ----- 0.43 ----- ----- ----- ----- 0.43
18.33 0.36 466.28 0.65 ----- ----- ----- 0.39 ----- ----- ----- ----- 0.39
19.17 0.32 466.27 0.65 ----- ----- ----- 0.35 ----- ----- ----- ----- 0.35
20.00 0.28 466.26 0.65 ----- ----- ----- 0.30 ----- ----- ---- ----- 0.30
20.83 0.26 466.26 0.65 ----- ----- ----- 0.27 ----- ----- ----- ----- 0.27
21.67 0.25 466.26 0.65 ----- ----- ----- 0.26 ---- ----- ---- ----- 0.26
22.50 0.25 466.25 0.65 ----- ----- ----- 0.25 ----- ----- ----- ----- 0.25
23.33 0.24 466.25 0.65 ----- ----- ----- 0.24 ----- ----- --- ----- 0.24
24.17 0.09 466.25 0.65 ----- ----- ----- 0.22 ----- ----- ----- ----- 0.22
...End
Hydrograph Report
Page 1
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 10 yrs
= 7.87 ac
= 0.0%
= TR55
= 5.50 in
= 24 hrs
Peak discharge = 42.07 cfs
Time interval = 5 min
Curve number = 91
Hydraulic length = 0 ft
Time of conc. (Tc) = 8.7 min
Distribution = Type II
Shape factor = 484
Hydrograph Volume = 119,682 cuft
Hydrograph Discharge Table
Time -- Outflow
(hrs cfs)
7.67 0.43
8.50 0.59
9.33 0.83
10.17 1.15
11.00 2.05
11.83 20.92
12.67 3.57
13.50 2.02
14.33 1.41
15.17 1.18
16.00 0.95
16.83 0.85
17.67 0.76
18.50 0.68
19.33 0.60
20.17 0.52
21.00 0.50
21.83 0.48
22.67 0.47
23.50 0.45
.End
Hydrograph Report
Page 1
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 1
Max. Elevation = 466.90 ft
Storage Indication method used.
Hydrograph Discharge Table
Time Inflow
(hrs) cfs
12.50 4.77
13.33 2.20
14.17 1.47
15.00 1.23
15.83 1.00
16.67 0.86
17.50 0.78
18.33 0.70
19.17 0.62
20.00 0.53
20.83 0.50
21.67 0.49
22.50 0.47
23.33 0.46
24.17 0.18
Peak discharge
Time interval
Reservoir name
Max. Storage
= 39.53 cfs
= 5 min
= New Pond l
= 31,821 cuft
Outflow hydrograph volume = 94,083 cuft
Elevation Civ A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Exfil
ft cfs cfs cfs cfs cfs cfs cfs cfs cfs
466.50 5.17 ----- ---- ---- 5.17 0.00 ---- -- ----
466.40 2.35 ----- ----- ----- 2.34 ----- ----- ---- ---
466.36 1.64 ----- --- --- 1.56
466.34 1.37 ----- ----- ----- 1.26 ----- ---- ---- ----
466.33 1.16 ----- ----- ----- 1.03 ----- ----- ----- -----
466.32 1.02 ----- ----- ----- 0.87 ----- ----- ----- -----
466.32 0.94 ----- ----- ----- 0.79 ----- ----- ----- -----
466.31 0.87 ----- ----- ----- 0.71 ----- ----- ----- -----
466.31 0.79 ----- ----- ----- 0.63 ----- ---- ----- -----
466.30 0.72 ----- ---- ----- 0.54 ----- ---- ----- ---
466.30 0.68 ----- ----- ----- 0.51 ---- ----- ----- -----
466.30 0.67 ----- ----- ----- 0.49 ----- ----- --- ----
466.30 0.65 ----- ---- ----- 0.47 ----- ----- -----
466.30 0.65 ----- ---- ----- 0.46 ----- ----- ----- -----
466.29 0.65 ----- ----- ----- 0.42 ---- ----- ---- ----
Outflow
cfs
5.17
2.34
1.56
1.26
1.03
0.87
0.79
0.71
0.63
0.55
0.51
0.49
0.47
0.46
0.42
.End
Reservoir Report Page 1
Reservoir No. 1 - New Pondl Hydraflow Hydrographs by Intelisolve
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
0.00 462.00 4,200 0 0
1.00 463.00 5,016 4,608 4,608
2.00 464.00 5,904 5,460 10,068
3.00 465.00 6,864 6,384 16,452
4.00 466.00 7,896 7,380 23,832
5.00 467.00 9,776 8,836 32,668
5.50 467.50 10,791 5,142 37,810
Culvert / Orifice Structures Weir Structures
[A] [13] [C] [D] [A] [B] [C] [D]
Rise in = 18.0 0.0 0.0 0.0 Crest Len ft = 12.57 30.00 0.00 0.00
Span in = 18.0 0.0 0.0 0.0 Crest El. ft = 466.25 466.50 0.00 0.00
No. Barrels = 1 0 0 0 Weir Coeff. = 3.33 2.60 0.00 0.00
Invert El. ft = 460.50 0.00 0.00 0.00 Weir Type = Riser Broad - -
Length ft = 50.0 0.0 0.0 0.0 Multistage = Yes No No No
Slope % = 0.01 0.00 0.00 0.00
N-Value = .013 .000 .000 .000
Orif. Coeff. = 0.60 0.00 0.00 0.00
Multistage = n/a No No No Exfiltration Rate = 0.00 in/hr/sqft Tailwater Elev. = 0.00 ft
Note: All outflows have been analyzed under inlet and outlet control.
Stage / Storage / Discharge Table
Stage Storage Elevation Civ A Clv B Clv C Clv D Wr A Wr B Wr C Wr D EAU Total
ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs
0.00 0 462.00 0.00 - - - 0.00 0.00 -- -- - 0.00
1.00 4,608 463.00 0.65 -- --- --- 0.00 0.00 -- -- - 0.00
2.00 10,068 464.00 0.65 - - - - --- 0.00 0.00 - - - 0.00
3.00 16,452 465.00 0.65 -- - - 0.00 0.00 --- - - 0.00
4.00 23,832 466.00 0.65 - - -- 0.00 0.00 -- - - 0.00
5.00 32,668 467.00 19.95 -- --- --- 19.95 27.58 - -- - 47.53
5.50 37,810 467.50 21.17 - - - 21.16 78.00 - - - 99.16
Hydrograph Report
Page 7
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 100 yrs
= 7.87 ac
= 0.0%
= TR55
= 7.85 in
= 24 h rs
Peak discharge = 62.29 cfs
Time interval = 5 min
Curve number = 91
Hydraulic length = 0 ft
Time of conc. (Tc) = 8.7 min
Distribution = Type II
Shape factor = 484
Hydrograph Volume = 181,489 cult
Hydrograph Discharge Table
Time -- Outflow
(hrs cfs)
6.67 0.62
7.50 0.76
8.33 0.95
9.17 1.38
10.00 1.74
10.83 2.91
11.67 11.60
12.50 6.95
13.33 3.20
14.17 2.14
15.00 1.78
15.83 1.45
16.67 1.25
17.50 1.13
18.33 1.01
19.17 0.89
20.00 0.77
20.83 0.73
21.67 0.71
22.50 0.68
23.33 0.66
...End
Hydrograph Report
Page 1
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Hydrograph type = Reservoir
Storm frequency = 100 yrs
Inflow hyd. No. = 1
Max. Elevation = 467.12 ft
Peak discharge
Time interval
Reservoir name
Max. Storage
= 58.33 cfs
= 5 min
= New Pond1
= 33,892 cuft
Storage Indication method used.
Hydrograph Discharge Table
Outflow hydrograph volume = 155,890 cuft
Time Inflow Elevation Civ A Clv B Clv C Clv D Wr A Wr B Wr C Wr D EAl Outflow
(hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs
11.67 11.60 466.57 7.60 --- ----- ----- 7.60 1.70 --- ------ 9.30
12.50 6.95 466.54 6.54 --- ---- ----- 6.54 0.94 ---- -- ----- 7.48
13.33 3.20 466.43 3.36 ----- ----- ----- 3.36 0.00 ----- ----- ----- 3.36
14.17 2.14 466.39 2.27 ---- ---- ---- 2.25 --- --- ----- ---- 2.25
15.00 1.78 466.37 1.89 ---- ----- ----- 1.83 --- ----- ----- ----- 1.83
15.83 1.45 466.35 1.58 ----- ----- ----- 1.50 ----- ----- ----- ----- 1.50
16.67 1.25 466.34 1.37 ----- ----- ----- 1.27 ----- ---- ----- ----- 1.27
17.50 1.13 466.33 1.26 ----- ----- ----- 1.15 ----- ----- ----- ----- 1.15
18.33 1.01 466.33 1.16 ----- ---- ----- 1.03 ---- ----- ----- ----- 1.03
19.17 0.89 466.32 1.05 ----- ----- ----- 0.91 -- ---- ----- ----- 0.91
20.00 0.77 466.32 0.94 ----- ----- ----- 0.79 ---- ----- ----- ----- 0.79
20.83 0.73 466.31 0.89 ---- ---- ----- 0.73 --- ----- ----- ---- 0.73

21.67
0.71
466.31
0.87
----- ----- ----- 0.71
----- -----
---- ----
0.71
22.50 0.68 466.31 0.84 ----- ----- ----- 0.68 ---- ---- ---- ----- 0.68
23.33 0.66 466.31 0.82 ----- ----- ----- 0.66 ----- ----- ----- ----- 0.66
...End
Reservoir Report Page 1
Reservoir No. 1 - New Pondl Hydraflow Hydrographs by Intelisolve
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cult) Total storage (cuft)
0.00 462.00 4,200 0 0
1.00 463.00 5,016 4,608 4,608
2.00 464.00 5,904 5,460 10,068
3.00 465.00 6,864 6,384 16,452
4.00 466.00 7,896 7,380 23,832
5.00 467.00 9,776 8,836 32,668
5.50 467.50 10,791 5,142 37,810
Culvert / Orifice Structures Weir Structures
[A] IB] [C] [D] [A] [B] [C] [D]
Rise in = 18.0 0.0 0.0 0.0 Crest Len ft = 12.57 30.00 0.00 0.00
Span in = 18.0 0.0 0.0 0.0 Crest El. ft = 466.25 466.50 0.00 0.00
No. Barrels = 1 0 0 0 Weir Cceff. = 3.33 2.60 0.00 0.00
Invert El. ft = 460.50 0.00 0.00 0.00 Weir Type = Riser Broad - -
Length ft = 50.0 0.0 0.0 0.0 Multi-Stage = Yes No No No
Slope % = 0.01 0.00 0.00 0.00
N-Value = .013 .000 .000 .000
Orif. Cceff. = 0.60 0.00 0.00 0.00
Multistage = n/a No No No ExfiItration Rate = 0.00 in/hr/sqft Tailwater Elev. = 0.00 ft
Stage / Storage / Discharge Table
Stage Storage Elevation Clv A
ft cuft ft cfs
0.00 0 462.00 0.00
1.00 4,608 463.00 0.65
2.00 10,068 464.00 0.65
3.00 16,452 465.00 0.65
4.00 23,832 466.00 0.65
5.00 32,668 467.00 19.95
5.50 37,810 467.50 21.17
Note: All outflows have been analyzed under inlet and outlet control.
Clv B Civ C Clv D Wr A Wr B Wr C Wr D Exfil Total
cfs cfs cfs cfs cfs cfs cfs cfs cfs
-- -- --- 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
19.95 27.58 --- --- - 47.53
- - - 21.16 78.00 --- - - 99.16
\N A ?R Michael F. Easley, Governor

? Ap William G. Ross Jr., Secretary
? North Carolina Department of Environment and Natural Resources
?
? Alan W. Klimek, P.E., Director
--f Division of Water Quality

Division of Water Quality
Department of Environmental and Natural Resources
Wetlands/401 Unit
Street Address: 2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604-2260
Mailing Address: 1650 Mail Service Center
Raleigh, NC 27699-1650
Contact Information: Phone #: [phone]
Fax #: [phone]
Fag To: ( an ?46 Fag #: Lt C/ 0
Company: ?- S Date:
Number of pages including cover sheet: p?
Notes or special instructions:
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N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (http://h2o.enr.state.nc.us/nawedands
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STONEYBROOK COTTAGES q
PHASE II
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DEVELOPMENT PLAN .........................2
OVERALL DEVELOPMENT PLAN ...............3
ERISrM 00NDTTIONS .......................1
PROJECT N0. 1061-02.10
DURHAM, NORTH CAROLINA
MARCH 10, 2003
REVISED: MAY to 2003
SITE NOTES
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August 26, 2002
Durham County
DWQ Project No. 03-0728
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Rd., Suite H-106
Durham, NC, 27705
Dear Mr. Stewart:
On July 29, 2003, the NC Division of Water Quality (DWQ) received additional information for a 401 Water Quality
Certification application for stream, wetland and buffer impacts associated with the Stoneybrook Cottages phase II project in
Durham County. Insufficient information has been provided in order for us to complete our review. Specifically, please
provide the following materials so that we can complete our review of your application:
1) Per the conversation between Todd St. John of this Office and John Schrumm of Duane K. Stewart, it is the
understanding of this Office that a revised stormwater management plan shall be provided in the near future.
2) It is also the understanding of this Office that a revised Pre-construction Notification Application will be provided
reflecting the revised stream and buffer impacts.
Until the information requested in this letter is provided, I will request (by copy of this letter) that the Corps of Engineers
place this project on hold. Also, this project will be placed on hold for our processing due to. incomplete information (15A
NCAC 2H .0507(h)).
Thank you for your attention. If you have any questions, please contact Cyndi Karoly Todd St. John in: our Central
Office in Raleigh at [phone].
n el
n o ney
cc: Corps of Engineers Raleigh Regulatory Field Office
Raleigh DWQ Regional Office
File Copy
Central Files
John Schrumm, Duane K. Stewart, Inc., 3715 University Drive, Durham, NC, 27707
030728
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (hqp://h2o.enr.state.nc.us/acwetlands)
Customer Service #: 1-877-623-6748
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
June 18, 2002
Durham County
DWQ Project No. 03-0728
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ryan D. Stewart
Stelic Enterprises, Inc.
6101 Guess Rd., Suite H-106
Durham, NC, 27705
Dear Mr. Stewart:
On June 16, 2003, the NC Division of Water Quality (DWQ) received your application for a 401 Water Quality
Certification for stream, wetland and buffer impacts associated with the Stoneybrook Cottages phase II project in Durham
County. Insufficient information has been provided in order for us to complete our review. Specifically, please provide the
following materials so that we can complete our review of your application:
• Please provide details for a stormwater management plan to include plans and s ifications for stormwater
management facilities that are appropriate for surface waters classified as Class and designed to remove
85% TSS according to the most recent version of the NC DENR Stormwater Best Management Practices
Manual. These facilities must be designed to treat the runoff from the entire project;
• The loop road intersection on top of the stream buffer needs to be re-designed to minimize impacts to the buffer;
• Please show the proposed 95 feet of stream impact on your site plan;
• Please discuss the intent and design of the "improved open space" shown on your site plan;
• Please be sure to show all proposed impacts on your site plan.
Until the information requested in this letter is provided, I will request (by copy of this letter) that the Corps of Engineers
place this project on hold. Also, this project will be placed on hold for our processing due to incomplete information (15A
NCAC 2H .0507(h)).
Thank you for your attention. If you have any questions, please contact Cyndi Karoly in our Central Office in Raleigh at
[phone].
Sincerely,
' -4* 1 A.
Joh Dorney
cc: Corps of Engineers Raleigh Regulatory Field Office
Raleigh DWQ Regional Office
File Copy
Central Files
Bryan Staley, 3715 University Drive, Durham, NC, 27707
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (http://h2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
030728

Office Use Only: '0.30 For Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "loot Applicable" or "N/A".)
9 a ?? ,,,m? 4? a r'?? t o py
?s ?mGr ? i1 ?? ? .? PP
1. Processing
1. Check all of the approval(s) requested for this project: JUN 1 6 2003
® Section 404 Permit ® R"#an or Watershed Buffer Rules
? Section 10 Permit ? Isolled Wetlddgl?erlno#rl DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: Stelic Enterprises Inc.
Mailing Address: ATTN: Ryan D. Stewart
6101 Guess Rd., Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: stelicentinc@,hotmail.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham, NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stoneybrook Cottages Phase H
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stoneybrook Cottages Phase 11
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N, 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mVs/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site) A j cent land use, single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers pans backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single y residences.
IV. Prior Project History
if jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, nii,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.p-ov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
leasespecify)
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dates (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mWquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.

* List each impact separately and identify temporary impacts. impacts include, but are not limited to: nn, excavation, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined. All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
htlp://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at htip://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* (s uahnpct re feet) Multiplier Mitigation Required
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
% Proposed Impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
--
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
(J S o
plicant ge 's Signature ate
signature i alid only if an authorization letter from the applicant is provided.)
Page 12 of 12
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Office Use Only: Form Version May 2002
USACE Action ID No. DWQ No
(If any particular item is not applicable to this project, please enter "Not Applicable or "N/A"..)
I. Processing
?uIv 1 ? zoos
1. Check all of the approval(s) requested for this project:
yN q
® Section 404 Permit ® Riparian or WatershecL%'iffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: Stelic Enterprises Inc.
Mailing Address: ATTN: Rxan D. Stewart
6101 Guess Rd.. Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: stelicentinc@,hotinail.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham. NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stonevbrook Cottages Phase H
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stonevbrook Cottages Phase 11
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N. 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93 ac.
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site), Adjacent land use; single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of side family residences with typical public utilities including water, sewer,
roadways electric etc The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized cleanng, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (detern ination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Inipact Perennial or
Intermittent?
(please specify)
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associates rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mNguest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. impacts include, out are not united to: mi, excavauon, urcuging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined. All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetla,nds/strrngide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at httn://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify V
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* (s uhnpct are feet Multiplier MRequired
itigation
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Gone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
% Proposed Impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
" ?J s d
plicant ge is Signature ate
signature l alid only if an authorization letter from the applicant is provided.)
Page 12 of 12
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Page 1 of 1
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EX. LOT TABLE
\ I I LOT OWNER 0 BOOK PEAT TAY IW P6N
LISA SHRFMZ
17 i, BRADY
ANDALL 1&N Bt 661 755-01-020 o,3-03-35 4650
13 D'.1tiUWC5. INC. 2313f 6/87 J55-0,-006 06,3-OrJ1-2865
/?)II1 -? / . 70' HIBUC R 33y6 103 M19 / ?/6• / \ I I18 J BRIAN CEN f r62Y 1374/3 6/103 75755-B -D79 W'3-03.-
5-05-005 0813-QY31-29I31
MAL (UNOPENED RMD) D 0 1?A M1L,U'p? / \ I - / I \ 1 I 21 RN TTu
I 0813-03-32-2065
2, SWilEPo7 1EPP%t SERKE 1207 755-0 -0M
23 SOLn ET9, REPNR SERWCE 1207/76/ 755-0,-001 OBIS-Ol-3z-u3o
41 rRANDDALL BP 123T3 2 0 6/93 755-0i o,9 o?ai3-03-s3i-z
41 //' / / ?? W" / \ SWEET I \ 43 RWIO41 BRADY 217/210 6/83 755-01-019 oo13-?11-2609
EJDEI1W63. PlC. 2313/703 6/BS 755-Ot-006 0813-03-3--2865
46 BRIAR GDDCN 2255/298 6 3 75155-01-?W7 081 Y03-J1- 9 1
?. / J`- 01RNS / I I \ 50 SOMERN REPAIR SERWCE /61
77?i7W 0853}-03-2 997
Z ??\t \\ \ 53 . a UIiELY 321 W s 1W I
\ ? ? ' aoeERr srreA3m i ? .4, ?A?S C \ a P?. / \ I ?ff? \
?\ _ D.B. 2662'/?4J? \` y / / t6 ,?' I / \
P.0 kAOR_E, Sr0??5 O y \/ 1 \ \ 756-01-081
\/ Pk1,3-03-22-70,3,' - l ,? 1 ( \ \•
20mm. R_p u' pN \ • I5'/0.W` j \ \ PROPOSED PROPERTY LINE
LEWIS BOWLES zo
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ZONED. R-20 \ \ EX6t6G 30' NON SEATO 10 BE T4WWIECINS i r'
UNDELfl.OPEG TO BE CLOSED PROPOSED ONTNI ?5/ \ 1m W±5
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rx.J55-DI-DII I i ' 1 \?-\?.. \ \. \ o m u m
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USE: U'?P1YET- 0.6 22 /399 / I 1
/ / I cEt $ I olw.. I I ` \ \ \\\ \,\ _-31" OAK \ PRELIMINARY DESIGN NOT RELEASED FOR CONSTRUCTION ? of 3
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EX. LOT TABLE
-22 i \ l / \/ i I ?, LDT DEED 6ae ma.mgs «. w? ti.a
17 rxFwrt cmxnl of tn. «pNau.
I MT 0 N AK IVP PIN
9 LISA SWIdPL 2671 I 83 755-01-OW 091 3-03-31-4747 u mmpltllw? er 1M -a?
11 RAN'11Y1 BRADY 1&14/759 6 755-01 -OW ?,3-P3-S7-1611 °?a'°"n^9°Iar rt?iwm?e?lm
/ "'9' / / I I 15'Ix ORE 13 F%CELHAl . INC. 2313/mS 6/BS 755-01-006 0613-07-31-2965
-` / i. m• PUCK fl3P9?'I ,,p ?, WNL / \ I 1] PAY 7A1Y 1374/!86.. 108/103. 755.01-0A 0613-03-32-0755Wq (D BRAIN 5
_ (UNOPEN ? °0& °v- / \ 116 44AAIEPKLL[ I \' I 1 I 21 SOMIERGOOCH -`GS i REPAIR SERVICE 1m7M 6/? 7SS--0 1-004 Bei3-OS-32-m65 ? M
OYA" zz SOUTHERN REPAIR SFRNCE 1107/R7 755-01-WS Oel}0}R-2130
39 TALLY NO FARMS. NG 2479/610 755-01-021 0817-03-31-2615
zo37/240 6/63 755-0,-N9 oe13-DS-z1-z609
4t R4UWI. BpM1• zo31/2
43 RxNDAIl BRADY +D 6/AS 7ss-01-01s 08 3-03-31-26M
FRWE \I qz- srcr c EXCELNAIMM 66, wc. 6s 7s?s o11-cos re13--03-31-34
34 46 BRAIN GOOCH GAI I I ?i \ 50 SOUTHERN REPAIR SERVICE 6183 755-01-007 08 3--03-32-1001
2 \ 53 dJACK mc LIKELY tut/ s%e?3 77ss-o1-007A ?i3 al-iii]
ROBERT srRE11ESN .E /53A,
B.B. 2662/4]4
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/ 4 \ \ \ \ ® TREE SANE k OPEN SPICE AREA
DRAWN BY. IXP
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/ I 4 .21 \ \ \ CHECKED V, DNS
/ Nx MILLER /? N8530121'W 464.21 iAL \ \ \
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Office Use Only: 03 FVersion May 2002
U728
28
USACE Action ID No. DWQ No.
(If anv particular item is not applicable to this project, please enter "Not Applica
1. Processing,;;, .,... JUG zU p
1. Check all of the approval(s) requested for this project: v
® Section 404 Permit ® Riparian or Watershed Bi&f Wes?
? Section 10 Permit ? Isolated Wetland Permit fromD'kQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: Stelic EntgMrises Inc.
Mailing Address: ATTN• Ryan D. Stewart
6101 Guess Rd., Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan StalM PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stonevbrook Cottages Phase II
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stoneybrook Cottages Phase II
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N. 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93 ac.
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mgps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site) Adjacent land use• single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers, pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is posed
that will iMpact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. impacts include, but are not utmted to: mechanized ciearmg, grading, rui,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mWquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. impacts include, but are not umnea to: nn, cxvuvaL1V111 ulougnlg,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader --
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10.800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined. All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
bttp://h2o.enr.state.nc.us/ncwetlands/strrngide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify. )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* (s uInipct are feet) Multiplier Mitigation Required
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone i extends out 30 feet perpendicular trom near banK or cnannei; cone / extenas an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
% Proposed Impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
X1II. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
sid3
s Signature ate'
only if an authorization letter from the applicant is provided.)
Page 12 of 12
MapQuest: Maps: print
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PRELIMINARY DESIGN - NOT RELEASED FOR CONSTRUCTION a oB 3
Office Use Only: Form Version May 2002
USACE Action ID No. DWQ No. 2, do-
(If any particular item is not applicable to uus project, please enter Not Appncaoic yr NiA .?
I. Processing ? ehp
1. Check all of the approval(s) requested for this project: JUN 6 2003
® Section 404 Permit ® Riparian of t WateWBuffer Rules
e „ ?'
? Section 10 Permit ? Isolated Wetfari Ferrmi Al I V 51
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Stelic Enterprises Inc
Mailing Address: ATTN• Ryan D Stewart
6101 Guess Rd. Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: stelicentinc(a hotmail com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: bstaleyna dksa-tsi com
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stoneybrook Cottages Phase II
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stongybrook Cottages Phase II
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham, NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N, 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93 ac.
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mVs/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site) Adjacent land use; single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on map
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
(please specify)
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.uses.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mgMuest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. impacts mctuae, out are not wintru to. fill, eXCavauvu, wWrpl%,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate 1youts were examined All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
hltp://h2o.enr.state.nc.us/ncwetlands/stnngide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at ht1R//h2o enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
--
% Proposed Impervious = 34.05%
XH. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 211.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
(?
only if an authorization letter from the applicant is provided.)
Page 12 of 12
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[4140-4157] COLE MILL RD
DURHAM NC
27712 US
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Page 1 of 1
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DRAWING LIST
EX[SrM CONDITIONS .......................I
DEVELOPMENT PLAN .........................2
OVERALL DEVELOPMENT PLAN ...............3
PROJECT N0. 1061-02.10
DURHAM, NORTH CAROLINA
MARCH 10, 2003
REVISED. MAY 1, 2003
SITS NOTES
?ROWI LANE OlV`D`
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• EAT- C0.NIY rAY MAP NfFTIPOES
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TN 35-01-019 W 0513-03-31-2603 iW 155-01-DI6 FN W=03-21-9511 PALM)
BD NLWf Arm"na" THEN NNMI BOU11EM PW N NaVaE
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• TOiOCRWNOAI INONYIDR IS RWII [!IY W ON6RM
1WGNMIAC -
• IOIM. AREA W 1RP : 431,696 SGT 9.93Ek
ZOMIO. ?. R-20 PROPOSED: PW 211
• DISMG LAW USE: i Y S IAYLY ONWNG
• PROPmm IMN USE, n SKIS FOLLY 1015
RtlmEV .7 50E - 6303 SON
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INS SITE S N THE ZGIE Y FLOOD AREA PER R1L5 VA.
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• STE TO UIRCE mY OF D.ANU21 TRIER E SEAFR
• RUL01W S[RMR lgmw?
SETB'CIM AM TO MEET DAM PER Z0W6 KOAMM RS
• ALL UNITS TO NAVE GMWFS
• RE ARM M RE LOTS AW ROWS IK TO AC MISS WILED YRN E)(CEPINR TO LOT 1
• OM SPACE TRACT-
OPEN SPACE REOUM FOR TOTAL '
WEN SPACE PMM- IMM SWT 29B AAc (30ZSWT ) .W) k. (? % 9-q43)
• TIPOLSFACEMBEMYtlYFNR1 WMENNERSAF/mLTPIL.
SOFT 1A7 IWa GREATM
A E COPRIE YEA 663 8d TO BE
PRJSED TREE COOKE MSA - 94ffi5 SST 260 k (m
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• TOR SlP%OEIIBL 1fPkS E SANE7IFEE PEOITmBEN@
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• Coh,4= ELE1101TS
MkIMAI IAKER OF LOTS - 27
WSM LOT SIZE - 6.500 SOFT
INE SAYE N INOmUACFO OPEN SPACE AMS
APPROVAL STAMPING
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%=DUANE K. STEWART & ASSOCIATES * CONSULTING ENGINEERS
% 3715 UNIVERSITY DRIVE DURHAM, NORTH CAROLINA [phone] 403 21
FAX: (919) A90-6165 EMAIL: [e-mail] PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION

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EX. LOT TABLE
IR T7 D01 ;& W3 PIN ?INwA cement a eo9lmeE.
' \ - '? I ))) 9 LOT OWN ? 07V
4 U?m a Me rock
9 fA 01 0613 -0 1-4
_? \ _ / / 0` \ ) 1 11 RRAVl BRAPf 1604/156 6/883 3 755-01-ON 0613-07-31-1810 a1 rm`ur Dt aka
AEC, 957 / / I 7s'IN 13 EXCEIHYIICS- O:C. 913/7N 6/61 755-01 -086 oe i3-03-31-266s ) ^ 10 °v f
,8603 755-01-079 0813-L11-3z-Of ss
/ ,. E)457. b' PU91C 5ne 3,Opl9"- / \ / ?e• OBI= I 1 OR' / \ ' 18 BRIAN GDOfN 137 6//1
(UNOPENm CAM ®?-
EO 0 0 'd20 1 I 21 SOUBIERN REPAIR SERrICE iN1Y/]87 755-01 -ODE 0813-OJ-R-2065
/ 21 SOUTHERN REPMi Sf.POCE fAI/787 755-0,-003 0613--03-32-21]0
10 755-D -021 08' 3--03--2
39 T
`` 55-01-019 0813-03-31-2603
- •? '\ -?''/ ?- - / / I?"101/ / // ' I
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S? 05f% / '? I \ / 43 RP2YW1 BRADY ZOn/240 6/63 755-01 -019 0513--03-3 -2609
EXCELHAMICS.
Eµ6caoul s iss of-oo5 milo3-ii-z934
/ / ' / i Oe- / / G \ I ( J , 50 SOUTHERN REPAIR SEME 6/83 755-01-007 0813-03-32-1001
- \ - / , ?. .f' 1 \ \ 1 / \ 113 755-01--007B 0813-03-3 -0122 51 JACK LIVELY /81
2185/853
53 JAM LIVELY 1321/624 6/83 755-N-0O7A 0813-03-21-9997
83
' \ 1
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ROBERT
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P.B. IOi 4¢°-.-' \ \ \\
\ _ \ rvR,l'0w-'n ;m3,, ---- \/ w?,VJ.?,
1 ` \ \\ Duane K. Stewart
ZONED.. R-20, 23' pM ( e ] \ \ PROPOSED PROPERTY LINE
8 ASSOQATES, INC
? 91A.-- ?117 8.7 US: Y ?' .1 • . ('' ?1E(!4E l" \ 20 , , \ \ \\ CLNJSlAl11y3 BJGPHAS
-PIN 03=z1_6902 \ _ _ _ / rr c / 51
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TO BE REROUTED AAf SFYER / / /
TO BE S BE 5967
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RITE OS-01-2003
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/ 38" ' I 1 \°4" ,? VjV1',• d ))'/ y\ 3 .w? \ \ ` / SAV6tE FAMILY
/ / ; 1W
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\ ?M \tiw X s"? \ \ CHECKED By, W(S 715 L--i
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EX. LOT TABLE "'"a"""•
11T Y Mma dvrR?p• on Dem?Tlb
fAl LW PN Yuwn cenrz?t a t1w .ayln<•,/ \ / / / 17 9 N &i' SS-0,-022 0613-03-31-4742 Uw wmgenw? W u. +ol.
I ar IRA FFfZ -070V,
,J uB ?'?(??uD, tlw canlract
?J?J' F? \ l ' Ii3RPNLNLL BRADY 16056 6/63 255-01-ON 06,3-0}71-MIO
\ i- / , / J / ?.G?•q / / I »•I "CELNAWS. nVC. 231 M43/103 s/&1 755-0,-006 0611-01-3+-0155 v? ^ M ,d .e b
1
1A
J-T , ?• I7 flAY TALY 22 09/103. 755-0179 061102-32-0155 18 061102-32-0155
(UNOPEIFD ROADD 16 21 BRIAN GOOCH 55 6/03 755-0,-005 0671-OYII-?3V copy,gnt ?
2, SOUIHERII 12?Mi ,207 7 755-0,-0M 1 23 SOIEN REPAIR $EH07/767 75'r01-WS 06 1 1-07-32-2130
--- ??ALLY RO F1ARS ING 2R79/610 755-0 1-021 oet3-03-11-2615
R,i 41 figrylyil 20.17/210 6/6T 755-01-019 0613-03-31-2609
RAf,OAf1 2037/240 /81 755-o1-019 06,3-03-31-2609
d. \ 2' SWEET µ plCpNeyIC6• INC, 2113/703 6/Ri 755-o1-o0s 06,3-03-7,-z66s
`sr ------ ` 'p• / /'( ER0.VE \ rr I I J /t ' A6 BRIM GOOCH 2255/296 6/fii 755-01-005 06,3-03-11-z934
/E y- J 1 I 1 50 RNRN REP" SEI2JNE 6/67 7.x-01-007 0813-Qi-32-10pi ?
p ?' a \ s A SOU?iac wMELV
C,\ggC{ ,ss1%6?24 s/61 iss?°-oi ?i 3-03-21-9997 ROSE ,4EIIIII-
D.S. W2 Sf662/RE114(74FIN /
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pNE $f
PB 113-03-22-70,3Duane K. Stewart
ZONM. R_20
& ASSOCIATES, RAC.
.25y" j + 7 \ 20 coraax? 6s
D8.3/787
Y ?NI aelao•L-zi?s9o` \ _ _ I'm -?`? "0 J ?'/^\ ' 51 - p/6h. A \ R. /\\ PROPOSED PROPERTY LINE
9 ab\? \ a`x/ I new 6?• 5•.Y
\ \ FANCY
/ / /, ,,p \ Q•bA NG 2TM
ml a \ z6 '/ i f p 1 I ?.{p6 fi \ (m9 ceo6 m
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50' 1RAN50mNN. - , 24'
Q \ \ USE ARFA
13
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O 5967
/ rAt 155s--01o1--o13
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STEPHEN 459
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NPROVED OPEN SPACE AREA SCALE 1••0o / 1 \ \ / JOB NO. 1061-02.10
O / // \ \ ® TREE SAVE ! OPEN SPACE ARPA
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(n / / USE ED O.B. 227 /399 \\ \ 1 \ I iwJa O
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) 1 ,uv watt:. 1'=60.
jog No. 1061-2.10
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\ \ \ / / v \ vC 1 \ / ! 1 ! J DRAWN m: MP
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Office Use Only: }rev
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. r -7
USACE Action ID No. DWQ No. t LFy r? r?"m
(If anv varticular item is not applicable to this project, please enter "Not Applicable" or "N/A".) C
1. Processing JUN 6 2003
1. Check all of the approval(s) requested for this project: U ? EVf I ?
® Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Stelic Enterprises, Inc.
Mailing Address: ATTN: Ryan D. Stewart
6101 Guess Rd., Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham, NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stongybrook Cottages Phase H
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stoneybrook Cottages Phase 11
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham, NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N, 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93 ac.
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mgps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site) Adjacent land use; single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc. The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers, pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development. Response has not been received at this time
so no additional information can be provided
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, nu,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at hllp://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
( leases ecify)
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.MMNuest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
acres Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. Impacts include, but are not linuted to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined. All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
hitp://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at httZ://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify V
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers. Required
Zone* hnpact
(square feet) Multiplier
Mitigation
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 3U teet perpendicular from near nanx of cnannei; cone /- extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
% Proposed Impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
612
s signature ?,R..
only if an authorization letter from the applicant is provided.)
Page 12 of 12
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DURHAM NC
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PROJECT NO. 1061-02.10
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MARCH 10, 2003
REVISED: MAY 1, 2003
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Office Use Only: ! Form Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Apphoablq", NN?tA), )
1. Processing F@
JUN ? 6 LUO3
1. Check all of the approval(s) requested for this project: a ,? ?A
° ?terslie01.B"f f" s
® Section 404 Permit ® Ripanan?c?r?
? Section 10 Permit ? Isolated Wetland Permit from Q
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Stelic Enterprises Inc.
Mailing Address: ATTN: Roman D. Stewart
6101 Guess Rd., Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stoneybrook Cottages Phase II
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stoneybrook Cottages Phase II
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham, NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N, 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mVs/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site) Adjacent land use; single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Located within
100-year Floodplain**
es/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, nil,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at htgp://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
( lease s ecify
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not invited to: culverts and associated np-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mMuest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on map)
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. impacts include, nut are not ?nmtea to: nu, eacavauv,i, uicug,iiy,
flooding, drainage, bulkheads, etc.
5. Pond Creation
if construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetla,nds/strmizide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify V
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers. Required
Zone* s uaareafeet Multiplier Mitigation
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac., Proposed impervious area = 3.38 ac.
% Proposed impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
s Signature ate
only if an authorization letter from the applicant is provided.)
Page 12 of 12
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Page 1 of 1
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PROJECT NO. 1061-02.10
DURHAM, NORTH CAROLINA
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REVISED. MAY 1, 2003
APPROVAL STAMPING
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• 511E TO UOLM CRY OF DAM TMIEB 1 AMR
• K.M mMQ ROKV O
SUMMS ARE 10 WM MTOO PW ZONE REO IDRKM
• ALL UAS M N05E GVYOS
• RE AREA FOR THE LOTS NO Rd05 ME TO BE WSS GMED MM EXCIPWR N M 1
• om SPICE _
Of91 SP/GE PjgA ?i0,986 SOFT 295 .191 Au (SS X 931J)
• a£E. SALE IM BE LWKMMIM BME 0NFE6ASSOD1fffl.
• PROPOSED PR?S1MD M LOEA•LE AREA TO BE 20% OR OBAEA
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• POZAPPA4N 1ME9 a SOEEr D6[ PFOBRINIA:
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• OTaORED ELDONM
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TAFE SAE N OFammD WEN SPNE AREAS
i
K. STEWART & ASSOCIATES * CONSULTING ENGINEERS
q&DUANE
= 3715 UNIVERSITY DRIVE DURHAM, NORTH CAROLINA [phone] P0321
FAX: (919) A90-6165 EMAIL: INFOODKSA-TSI.COM PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION

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EX. LOT TABLE
/ 17 / ?' I ,\ ID< OWNFR DEAD BOOK PUT TAY RO' PW aWout4•mcoiwnt a d° my°aer.
1 081' 7174 Wm Wj° de?°
\ / I / I I 1 it NMWI. BR40Y /804/758 6 3 755.01-020 0813-OF-3I-1810 o0 41eF"'?`?e'b° MwM.d W
/ ' 1A' 95 / / I \ 2S1H ORt 13 OICOW111C5, INC. 15,3/703 6/83 755.0,-006 0813-07-31-2865 Mewm9mmr.
175m5 4 1081,03 755-0 -079 0313-07-32-0155
b• PUN1C F /y' .5y ) ,?0,,,g / Mr 111Y
DUST, (UNOPENED IS OR" COOCN 6/PJ 7%-0,-005 06,3-0}-31-2931 C pioM ® .-
/ RON
p8'1 21 SOUTHERN REPAIR gQMCB 1207 755-0tD4 0813-03-32-2065
Ks,
/ J I I \ 3 SOUTHERN REPAIR SEReTL ,207/707 755-0,-00.7 0613-0Y32-21.30
/ -/"'
79 TALLY NO
FARM" NC 1979/610 755-01-021 0813-03-31-2645
41 RAlAV1 BNM 237/210 6/93 35-0 1-019 0813-01-31-2609
43 ft4710N1 CBA01' 237/30 6/3 75.5-0/-019 0813-07-31-2609
------ SwFEi BRIAN GDDx I+F 2513 6/83
755 Dim 08 303-31-Hx ? 2255/298 - _ k , , _ - -\ \ ! i 1 I 1 \ 51 SDLnHERN REPAIR SER=E
/? 685 55 U;? 081 3311-0922 -=
\ 3 AACK LIVELY IJ11/624 6/81 755-0 1-OD7A 08 -21-9997 O
i N
\ \ / \ ` ROMRr snwtN i _ ' ' •6 ?A?iS 63 I
_ D.& 2662?/,4[7? i ??y\{>?// / t?$g' ?r;? \ J 'k I \ / \
P.B. 13fh4 (?BANf^?'Y"" // \/ J \ \
.? rx 786-ol-oel ---- r T i `'?_^^ff77t?!!''3BJ??,, \ \ ua a.4
D1E111
\ PNS973-03-22-7013 ?' / \ , ? ! i q0 1 , \ \\ Duane K. Stewart
- _ ZgEA R-10,' ?, // iq? \ 1r pI 1 • ?'l 1 \ \ PROPOSED PROPERTY LINE a ASS00Ahs, etc
_ LEWIS B067S Og; p 4'4,$Y A •?'tENGE 101" / \ CAKSW,IJG
@4GNE335
N yS?
11 7 1 M
? LPN OBI 21-6N@?r
! / 1>t as • sir
' \ 3NCIE r nr _ _\ h? i/ / \ a6•, /.' / / / / l01`",??s• 1 / 1 pp,,.w oem 9n^r
slaw
` \ \ ' - `\ - - - - _ _ _ / ll / y / • a / / \ \ I 3715 Un?.b Piw
EJ\I5?INC BERM DR. \ \ / / `:% i / 1 \ iT{ ( (919) 49attl9
?? \ \ - _ \ ` i Y ? \ 1 \ ro, (ss) ao-6166
\, - _ _ / J Q(W , 36' w p057NG 4.?A-b-
PROPERTY 24
70 _BE
REYtM14D-'-? / I 1 II 13 I /1 /
\\ \ \ \ !! / / i /
/N \
SEAL
DE151- lop
/ J _ - - 47 110
`;T'F TO BE REROUTED ROmm AS BE 30' ROW \ / r SEAL
ttSPAM 5967
P,R 8/
/ ill 334X%135-0113 \ - - - -•? / \
E ANP STATION TO 11 \ \
PIN 0913-03- 1'6727 ' CBE l?ltl? R IILLSING GRA I
E01R0: R-: \ DOSING 30• ROW SEWER TO BE CpWIEC1WG i{? /
0
Uff: 01R0E\ \ ` m BE I / PROPOSED
OMNL / 5 \ dBi •`Qi `'?
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(SHADE[) AREA)
m /
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\ ? . -? Bl?nlsr - ?
a- ,. ? ?" CDs
PPRm??NN - r
OYES ! '? 8" 1 d \ yp N `\ /
47W
to BE rrllDhn / \ \ \s° \ ?'ol
/ \ \ a > \
? \ \ \ --- ""- --- -vn;a4x / \ ?.' sr41r6?• C / \ k'
x mR ` /' 23' Wilr / ' \ \ \ \ \ \/ \
\ \ \\ ^ _ n Pi
\ \ \\ \ . \ \\\\ \ v i-'A\ 0 BE 1'r owx+ / ?1 J ` \?'\ oP 6D,Qy +
\ \ \\\ \\I\p??r \ ?' \\\ WEL& -'ONES %/? /I I ,? \ \anGk/ LIN
\ `\\ \ \ le• pnc0o\\ ?zz 6V(\ \( I\ \ \ r \ \ \ \ - _ r / F
FV? ) 36• % / / / J \ \ \ \ T
(To BE_ It-N
\ \ \ \\ \
rlI
61
/ \ 1 I I? / /yt 11 ? \ \ \ i
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SHr
71 iC
/ STEPHEN
PJL /18
` TAL 7?1"1-0140.
PIN 31A-03-25630
? fi i ,/77AA, izlY? '? y95 v v
IA / 1 1 j
/ / , ( 221-33 , I / f \ M1A \ r,? U
EIP
gla,
2-D
( / J Il 1 I0 EACH OFD j .r °? A s v v fin
OP OF B"" / e,r. y \ \ \ \ V
I I I I 4 j " FROM
GLM
// / i f 1 1 ? I 1 ?• ? : i ? ?,? I ?r° L..? !;? ?{?'j ,)v(1 V A V^ -,• ? W
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(3 I S as 4? .a a r xI 0 / \ ST9NEYBROOK COTTAGES
1.s .I v 1 11-
/ / C? / / ' 1 \ \ s 3\ 1 > j Q 1 C \ / PHASE ]
B 7 , t /K7?I 1 \ / 7a4EO: PoR 3.14 DALE: 05-01-2003
SINGLE FAMILY
SCALE 1•-40•
, \ JOB NO. 1061-0210
/ / / W / I I \ \ I\ "? i 3 1 S d I 1 Y 3 / \\ \ \ \ \ \ DRAWN B:: 01P
34.00 / u WT -OW SMW VJFFER
- L - - / J I \ \ f \\ > a ?u \ d \ \ CHECKED Br: D KS
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/ / i Bes3op 1 4 .211
Wx MILLER 1 Y! 464.21 OTAL)
T?1
O.B. Ise 36 1 \ \
/ P.&27/16 CRAP °
HIC?BCA? N N
/ Pdi/dBll-3-21-z071 ' I
E- . R-10 ' SIEPlI18116LER J I I \ \ \ \ ? \ ;\ \ 1 \` .` 1 inch . 40 K M
165: \ \
t1RLOPEO 0.6 21 /399 I \ 0
/ ' I T.JPB /-0t4e I , I I I ` \ \ `\\ \, .. 31° OAK \ PRELIMINARY DESIGN - NOT RELEASED FOR CONSTRUCTION n of 3
D. 755
u
EX. LOT TABLE
. ?. ?. a
LOT -
,3 RA zan 1 83 ]55-01-022 0813-07-31-(]17 arptdimea Ne war1
17 1 1 / 1
I ?' \ I \ s 1619PRRZ
3-03-31-4810 a?.??9e1n 0'° °O^bOC)
/ 0//258 Mumea b
693 755-Ot-020 081 31- 7865
1
N INC,
9 I 25•I dot i]iR1YTLLINCEItDALL WLTM BRtS. 1
7 182313/703 8/83 75s-0755-01i-- 005 006 0808133--0.103--31^?m ae
. 3o' OAB 3,0a 1 ?2s9 \ / / I i37/06, tO8Ji03. 755.01-07s 0613-03-3111--01
79]4 $ CpYh9
(UNOPENED R OP 6. J. I 18 BRIAN GOOCH ffid' /298 6J83 oM ® .-
/ ?. A / / 1 I 1 l 21 SOUTHERN REPAIR SEANCE 1201 ]55-O1-OW 0813-0.3-32-2065
/OSNI 73 SOUTHERN = X"" 1207 755-0)-023 0813-03-32-2130
755-01 021 oBI3-03-31-2645
39 RTALLY NO
?Qi7/7w 6/63 I55-0,-019 0813-03-31-2609
WYyL BRADY
43 RANDALL BRADY 2057/2w 6/83 755-01-019 0813-03-31-2609
f
2' ABET OU 44 E2CFINAMICS. ING 2313n03 6/BS 755-01-006 o81-z965
'tr ------ Y1 1 I ' /, 1 48 fiRW GOOCII 2255/296 6/63 756'0;--007 0613 rJ1-100
GARAGE 51 50 LNELY REPAIR SERVICE 2285/853 6/fli 755-01-0076 0813-03-31-0923
1321/fiz4 a/63 755-01-OO7A 08,3-03-21-9997
(?2 53 JACK LIVELY
ROBERT naEnEw
0.8 2662'?/,,44(7
P,8. 103/Ii, 6
S, WILD
M.76{i-D,-061 --_---Duane K. Stewart
PIM13-03-22-7013
1 23& ASSOCIATES. W K-
ZONE. R-20, ?1.0" 20
__-?_- \ A / \ \ ` CONS1Ai)NG BJGR9[fA5
D'.7
C Try C 51 PROPOSED PROPERTY LINE ?2 . 5?2?.. BdomrAOl
R_ T
?' '1 yp`",;iJj• X Pbu9 • OnT . SvrtY
0 \ \' JIlI.4[ EA1pY S ;0? / . Bl I{ DWFUNG ., ?6 V' / I
r \ _ 75 y'" J? 1 / \ 1 ]115 Veeeta'!)' O4e
Q 1 \ \ \\ US50' TRANSITIONIAL 4' 0-7\y
SEICK
E AREA ll.? /
//'\/I ; 13 1
12' MMM4
SEAL
In TmREEII
2
SEAL
,p$. 257e?%+?91 A '13£ ? ??, \ 3 / ? 4? \ \
0 / v.a 316/351 \ ?'98 / / ? ?Y \
/ T.M. 755-0"13
N PIN oe13-?1-wn .- = Q 11 \ P 5967 \X'
USE: U.NDEZVELOP-ED
200 3, K
W \ \ \ \ ???__ O\ \ I O r 8 NC \ ` O Ia ON( \` /? / 1 T 1 \\\ \ , 00 p fi \,
\ \ \ \ Ifi' e4Crt \ 22106% \ J? j _ 1 / / / ,' \ \\ /'
cl)
\\ _ \ ?i tom
0) I.N
44: 2;5
C STEPHEN MI
DB. 22 159 - - - -
E P.8 to 1 1 1 I /%/ / \ 1 E?
a. 7 T.M. 7"1-014n
p PIN 06?1..p 21-3530 /
> t
"'NtE`ADPfD S MPROYEDSPACE \\ ? \ v / \ /?_? M
m
f ?\ Ld
USE AREA
iII l ((\ ?`v///p ///? \ ?
I , ?LlOA?I I l ? ? ? \\ // ? ? t? STc?ItGES'X\\ 1_ V O.J
co
I °/ 11 fl i I IQI \ V ?? / P EIS O W
ZONED: 3.14\ r
5;F;? FAMILY
9
0
DATE 05-01-2M3
N 8 n? L . _ . 1 _ \ 1 y . 1 \ ` / / ® fdE SAW
o / / 1 1 \ \ \ / \ `• \ IMPROVED OPEN SPACE AREA SCALE 1•°10•
JOB No. 1061-0210
/ \ \ M TREE SAVE d OPEN SPACE AREA
cl) ?2/ . DRAWN BY-- )LP
/34A0 , , ,? I \ \
02 STREAM KWFER
f- / CHECKED B(: DNS
...1 .2i
N85'301?11y 464.21 OPAL) I' \ MILLER LL / / oa 1f88 / ( \ \ \
co / P.8 ?'t/I6 GRAPHIC SCA18 SHEET
n
0 M. 55 at-a14
21-2073 I \ \ ???..\ \ \ w o m a m (V L
/ FBI 13-0.3-
Q ZONED: R-2G_-_ STEPHEN ?IA11R \ \ I ?. lh
(n / /USE INyEYEIuPm 0.8 227 1399 1 I 11 \ 1 \ \\ \ 1\ \ \ 1 ircb - w ft 0
.8z? /la
P
p / M ,SS 31 OAK i PRELIMINARY DESIGN NOT RELEASED FOR CONSTRUCTION De 3
Office Use Only: ,Form Version May 2002
USACE Action ID No. DWQ No. Mur w?.
(If any particular item is not applicable to this project, please enter "Not"A'p'j d bWV)¢i-} )?"
I. Processing JUN 1 6 2003
1. Check all of the approval(s) requested for this project: a? a 8e,-r
® Section 404 Permit ® Riparian or Watershed ?? kr Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NW39
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NC)VRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
1. Owner/Applicant Information
Name: Stelic Enterprises Inc.
Mailing Address: ATTN: Ryan D. Stewart
6101 Guess Rd., Suite H-106
Durham NC 27705
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: stelicentinc(a hotmail.com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Bryan Staley PE
Company Affiliation: Duane K. Stewart & Assoc.
Mailing Address: 3715 University Drive
Durham NC 27707
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
Page 5 of 5
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Stono brook Cottages Phase II
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): Multiple (see attached page)
4. Location
County: Durham Nearest Town: Durham
Subdivision name (include phase/lot number): Stoneybrook Cottages Phase II
Directions to site (include road numbers, landmarks, etc.): Cole Mill Rd. (SR1401) just
north of I-85 in Durham NC
5. Site coordinates, if available (UTM or Lat/Long): 36° 02' 02" N. 78° 57' 17" W
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 9.93 ac.
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Ellerbe Creek
8. River Basin: Neuse
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/mgps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Vacant woodland (on-site), Adjacent land use; single family
residence (predominant) and woodland
Page 6 of 6
10. Describe the overall project in detail, including the type of equipment to be used:
Construction of single family residences with typical public utilities including water, sewer,
roadways electric etc. The site will be mass graded. Typical construction equipment will
be used including but not limited to: bulldozers pans, backhoe/trachoe, dump trucks, etc.
11. Explain the purpose of the proposed work: Construction of single family residences.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
PCN form submitted for Phase I of development Response has not been received at this time
so no additional information can be provided
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No further work or phases will be proposed
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 7
1. Provide a written description of the proposed impacts: A road crossing is proposed
that will impact less than 150 linear feet of streams/wetlands.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Clearing/Fill 0.006 No In Stream Freshwater In Stream

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, graamg, nti,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at hqp://www.fema.gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 0.05 ac.
Total area of wetland impact proposed: 0.006 ac.
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma)
Type of Impact* Length of
Impact
(linear feet)
Stream Name** Average Width
of Stream
Before hnpact Perennial or
Intermittent?
(please seci
1 Clearing/Fill 95 UT to Ellerbe Creek 3 ft. Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not llmtted to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www_manduest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 95 ft.
Page 8 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma)
Type of Impact* Area of
Impact
(acres) Name of Waterbody
(if applicable) Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.)

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: till, excavation, areaging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Dam/Embankment w/ Outlet structure & Level
Spreader.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Detention to meet Neuse Peak Flow Stds.
Size of watershed draining to pond: -7.9 ac. Expected pond surface area:-10,800 s.f.
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
A number of alternate layouts were examined. All alternates resulted in more impacts than
proposed in this plan or considerably reduced the financial viability of the project.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 9
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
hLtp://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
No mitigation plan is proposed for this project
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at hllp://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Page 10 of 10
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers. Required
Zone* Impact
(square feet Multiplier
Mitigation
1 8,460 3
2 5,640 1.5
Total 14,100
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 11 of 11
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Existing impervious area = 0 ac Proposed impervious area = 3.38 ac.
% Proposed Impervious = 34.05%
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The site will be served by public sewer.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 211.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
D
us signature "a.u
id only if an authorization letter from the applicant is provided.)
Page 12 of 12
MapQuest: Maps: print

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[4140-4157] COLE MILL RD
DURHAM NC
27712 US
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responsibility for any loss or delay resulting from such use.
Privacy Policy & Leaal Notices © 2003 MapQuest.com, Inc. All rights reserved.
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REVISED: MAY 1, 2003
SITE NOTES
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/ /7 / f7 I /I I \ 9 16RZ 755-01-021 °817-05-31-4747 Ca=moNlbe a ue eorA
/ R7V0ALL V1 BRADY ,801/758 663 755-01-820 08,3-03-71-4810
13 IXCDriMILS, INC- 1 89 ?p,re+1^9^le>xro1 iM "°^1'°R
B3 i 8613-03-3,:rF.5 1 to by reNmea ,e
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-W/ W,3-03-32-2°65
?,0 / I 1 ! I 21 SOLnNERm REPAIR 5E7MOE ,207/767 74-0,
(UNOPENED ROP? OP 6,t"l'-e,1?'2°15?{ / / 1 I ( I 1 23 5W/1IIE5d1 REPAIR StAYCE i2D7/7 74-0,-003 08,3-OS-32-2,YJ
7-Y H0 FNQIS RIO. zs79/618 735-0 , -0z, 0813-03-3,-2605
s 0613-03-31-260)
41 NLLBP70Y 2037/2/0 6/83 755-0 1-019
, 1 \ 43 PA RANW6U1 BPAOY 2037/240 6/83 74-0 1-019 0613-03-31-2609
d U \ 2- SAEEf C I 44 EXCELM S, WC. 2313n03 6/47 75511-006 8813-03 T1-2965
?Y - '? ' 'p- mAta 1 C\ l I I 1 '\ w 46 anJA7(1mVW RAYEPAR sr1MCE l 6/83 ]55-01 om 08 3--W--3i-1001
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1331/624 6/87 7YM11-0070 0913-03-21-9997
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PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION o OF 3

• Complete items 1, 2, and 3. Also complete A. Sigi dfure
item 4 if Restricted Delivery is desired. ` ?.Agent
¦ Print your name and address on the reverse X ? Addresse
so that we can return the card to you. g, R, v (Print ame) G. Date of Deliver,
¦ Attach this card to the back of the mailpiece, s
or on the front if space permits.
1. Article Addressed to: y? D.. Is delivery address from Item 1? ? Yes
03 0-7 Z? klU? If YES, enter delivery address below: No
r ?1 ?- ?e r p r? 5 ?s:
111C
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Dc)(-ha-m,05
3. ce Type ,
CCertified Mail 1?? Express Mail
? Registered O4Return Receipt for Merchandis
? Insured Mail ? C.O.D.
4. Restricted Delivery? (Extra Fee)
2. Article Number 7002 2 410 0003 0275 2137
(rransfer frose-",.)
.s'
-n 3811, August 2001. Domestic Return Receipt
D Yes
102595-r
¦ Complete items 1, 2, and 3. Also complete A. Signature
item 4 if Restricted Delivery is desired. X
¦ Print your name and address on the reverse I P<
so that we can return the card to you. B v
¦ Attach this card to the back of the mailpiece,
or on the front if space permits. °L`'%
Article Addressed to:
Stelic Enterprises
6101 Guess Road, Suite H-106
Durham, NC 27705
03-0728 - Durham County
? Agent
C.
D. Is livery address different from item 1
if YES, enter delivery address below:
? Yes
? No
3. Se ice Type
Se rertilied Mail ?? xpress Mail
? Registered Q Return Receipt for Merchandise
? Insured Mail ? C.O.D.
4. Restricted Delivery? (Extra Fee) ? Yes
Article Number 7002 2410 0003 0275 1154
(Transfer from service label)
-n 3811, August 2001 Domestic Return Receipt 2ACPRi
V-- auci N,iaca? o-
NCDNR
000 Soft Costs Land Development:005 LD Cit
6/5/2003
3101
200.00
PAYMENT
RECEIVED
BB&T Ph 2 Stoneybrook Cottages 200.00