SW7060802_APPROVED PLANS_20060829

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_:/��a'�_
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
;,% ok2Q _.
YYYYMMDD

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r / { ##/ I I/ / I t ( / / \ 1. THIS PROJECT CONSISTS OF THE CONSTRUCTION OF A NEW
. 1 � / �-' 1 � � j 1 , / // / L \ j f / - � .r x I i j � -_� BUNKHOUSE BUILDING, PARKING LOTS AND RECREATION FIELDS
I ( LV \, \ x\ I,,f ]il I' \ I i ,-// /r ( \ � 1 / / \ ! t �� / �/ �' AT THE EXISTING BIACKWATER FACILITY.
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__ U N \ I I►�I if, \ 1 / L \ - r - � � / I // ,� I I / X 2. PROPERTY INFORMATION TAKEN FROM AERIAL TOPOGRAPHY
1P LONG U
lDE X 18 DEEP ( ( ,- 7 --` / . , ( , I > ;/( 1,�' l I' I { I 1// / � �, POND DRAINAGE AREA , 1 j t SURVEY PROVIDED BY THE OWNER.
\ i III , RLASS A I APRON ON �� \ `j 1 1
� � \ `\ \ v 1 ' (I I I `EOTEXTII�i� APRIC Z ENT GRASS_ SWALE f --4-_�-. _ ._L -- - r r1 I / 1 � ( 't � 1 3. CONTRACTOR SHALL HAVE ALL ON --SITE UTILITIES LOCATED
! ,} i rill I I I I I I# rI, Y J /�, , \ / BY UTILITY LOCATION SERVICE. NOTIFY OWNER OF ANY
1 `f� I ! (if 7 � _._ J x DISCREPANCIES {3R CONFLICTS PRIOR TO COMMENCING WORK.
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/ \ 1 r - "' l ' I I ! ' �� ' 4. COORDINATE LOCATION OF PROP05ED WORK WITH LOCATION
/ k t I 1 t j 1 ' �'I f { I 14.007!: / J / (_ OF EKisnNG/PROPOSED UTILITIES AND OTHER SITE
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/ / x - I � (' 11 Ii 1 i I ' � t , / f f ! ^- \ � � d I f �`� � IMPROVEMENTS.
- t1'tt1,11j ; I 1 I i w r \ \ \ [ { i ./ \ . � � ! r - --, 5. ALL AREAS SHALL HAVE POSITIVE DRAINAGE TO STORMWATER
�_ - ` � I t,� tali 1 I 1 ' �\ \ \ - - - - - � - - - lC. - 1 - - - - I l # 1� I CONVEYANCE SYSTEM, AND AWAY FROM BUILDING.
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< x 1 I I - I ,tl �lll\� i' ,,1 15.Oa i' y ,� \ ' '1 - 7 / ! ' I ,1 r /�I I I I \ 6. A PUMP MUST BE KEPT ON SITE FOR EMPTYING OF POND
/� WEST STORMWATER ,
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// � I . I \ FOREBAY W 11 1 'I V �� ti z j '� _ J /. \ � r \ \ - � � 1 ` / { rl 14 I I \\ IN THE PURPOSES. EVENT OF EMERGENCY AND FOR MAINTAINANCE
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\ \, \ ' �; U \ / I \ I / J I ` ' j I I I (I \ 7. WSIN/POND MUST BE CLEANED OUT OF ALL SEDIMENT AND
�\ t11 i�J1 J i // �/ /J I I j j/ f } 16.00 ' 1 .00 _ I \\\ I / i l { I � + l � I RETURNED TO DESIGN ELEVATIONS PRIOR TO USING AS A WET
f- -_ ' ,�iI ,i � � ( k-' I f - ' \ \ I I I 1 I I I )1 I 1 DETENTION POND.
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POND OUi�ET: i8 �{�NG X 8 WIDE X 18- - -- -- --- --- � -•- -- -- _ - -
EP CLASS B RIP RAC APRON ON CE I rs-Ir
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X OTEXTILE FABRIC � DRAINAGE, MINIMUM 1 ����-� �` ~- _- - V) -, INVERT TO PROVIDE POSITIVE DRAINAGE, .
' -" - COVER., ��\•�� �� ��� / \ MINIMUM 1 COVER. SITE GRADING PLAN
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VICINITY MAP
NO SCALE
VIRGINIA
1 1 Jr I F11111111111111111111I I i
NORTH CAROLINA
//
ado
PIPE OUTLET TO FLAT AREA - NO
WELL-DEFINED CHANNEL
LA
F------La
' MIN.
U VIV''IYCL DC,IlI HM2
OVER FILTER FABRIC
SECTION -A-
RIPRAP OUTLET PROTECTION
NO SCALE
_`;/
C _x f X
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OUTLET_ PROTECTION NOTES:
1. ENSURE THAT THE SUBGRADE FOR THE FILTER AND RIPRAP FOLLOWS THE REQUIRED LINES
AND GRADES SHOWN IN THE PLAN. COMPACT ANY FILL REQUIRED IN THE SUBGRADE TO THE
DENSITY OF THE SURROUNDING UNDISTURBED MATERIAL LOW AREAS IN THE SUBGRADE ON
UNDISTURBED SOIL MAY ALSO BE FILLED BY INCREASING THE RIPRAP THICKNESS.
2. THE RIPRAP AND GRAVEL BEDDING MUST CONFORM TO THE SPECIFIED GRADING LIMITS SHOWN
ON THE PLANS.
3. FILTER FABRIC MUST BE PROPERLY PROTECTED FROM PUNCHING OR TEARING DURING
INSTALLATION. REPAIR ANY DAMAGE BY REMOVING THE RIPRAP AND PLACING ANOTHER PIECE OF
FILTER CLOTH OVER THE DAMAGED AREA ALL CONNECTING JOINTS SHOULD OVERLAP A MINIMUM
OF 1 FT. IF THE DAMAGE IS EXTENSIVE, REPLACE THE ENTIRE FILTER CLOTH.
4. RIPRAP MAY BE PLACED BY EQUIPMENT, BUT TAKE CARE TO AVOID DAMAGING THE FILTER.
5. THE MINIMUM THICKNESS OF THE RIPRAP SHOULD BE 1.5 TIMES THE MAXIMUM STONE
DIAMETER.
6. RIPRAP MAY BE FIELD STONE OR ROUGH QUARRY STONE. IT SHALL BE HARD, ANGULAR,
HIGHLY WEATHER -RESISTANT AND WELL GRADED.
7. CONSTRUCT THE APRON ON ZERO GRADE WITH NO OVERFALL AT THE END. MAKE THE TOP OF
THE RIPRAP AT THE DOWNSTREAM END LEVEL WITH THE RECEIVING AREA OR SLIGHTLY BELOW IT.
8. ENSURE THAT THE APRON IS PROPERLY ALIGNED WITH THE RECEIVING STREAM AND .
PREFERABLY STRAIGHT THROUGHOUT ITS LENGTH. IF A CURVE IS NEEDED TO FIT SITE
CONDITIONS, PLACE IT IN THE UPPER SECTION OF THE APRON.
9. IMMEDIATELY AFTER CONSTRUCTION, STABILIZE ALL DISTURBED AREAS WITH VEGETATION.
4
- -,_3•� D - 1
GENERAL NOTES:
LINE GRASS SWALE WITH SOD
OR FOLLOW RECOMMENDATIONS . B Min. D = 1 FT.
PER SEEDING SCHEDULES. B = 3 FT.
GRASS- SWALE-,
NO SCALE
NATURAL
GROUND
STOW,JINATER
APPROVED 0 I/
NORTH CAROI.INA ENV: _' 1E4TAL
MANAGE%*NT C0PjMf_n0N
I011VISION OF WATER QUALITY
D +' 2026
SllmmaW Perrot No W * 090�
Z
0 40' 80' 120'
SCALE IN FEET
lam! HKIHUIJ
ARCADIS G&M of North Carolina, Inc.
801 Corporate Center Drive, Suite 300
Raleigh, NC 27607
Tel: [phone] Fax: 919-854-'5448
wwcarcadis-us.com
SEAL .w.timusaw.. I SEAL
SEAL Nor VAUD UNLESS SIGNED AND DATED
PROJECT MANAGER DEPARTMENT MANAGER
R. LEE R. KING
LEAD DESIGN PROF. CHECKED BY
M. DYDULA J. ALIEN
TASK/'PHASE NUMBER DRAWN BY
00001 B. NARRIS
PROJECT NUMBER DRAWING NUMBER
NC406016.0000 C1 s03
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E
KEY
DESCRIPTION
ELEVATION
a
TOP OF EMBANKMENT EL
13.50
Q
RISER INLET RIM EL
11.00
Q
BOTTOM OF RISER EL
5.00
®
INVERT OF INLET EL & DIA.
10.50 & 3"
Q
BOTTOM OF BASIN EL
6.00
©
DIAMETER OF BARREL
24"
Q
LENGTH, SLOPE AND
INV. OUT OF BARREL
50% 0.891
10.00
®
EMERGENCY SPILLWAY EL
12.00
d
BERM ELEVATION
10.25
®
OUTLET PIPE INVERT EL
10.40
(1)
TOP OF RISER
12.50
(D
TOP OF CONCRETE FILL
10.40
6" THICK CONC. SLAB,
W/#4BARS 08"O.0
EXTEND BRICK TO FORk
COLUMNS AT CORNERS
10' (MIN.) TOP OF
EMBANKMENT
10' MIN, 1
8
SEE ANTI -SEEP COLLAR DETAIL,
TWO REQUIRED
1:1
71
OUTLET PROTECTION,
SEE SHEET C1.03 3F.<,-
CUT-OFF TRENCH
TTA\°1E MANHOLE
FOR
NANCE ACCESS
DIP DRAW -DOWN PIPE - 90' ELBOW j
SECTION OF PIPE - BELOW PERMAND
POOL ELEVATION. SECURE PIPES TO
RISER WITH GALVINIZED METAL STRAPP
VAV A I' CONC. BASE
EAST RISER FRONT 1jIEiN
44' (INSIDE DIM.)
-PROVIDE r i• OUTLET
WITH CLASS 2 RIP RAP /" ANDSIDES)
DETAILSEE RISER
DIP DRAW -DOWN PIPE - 90' ELBOW AND SECTION OF
..BELOW PERMANENT POOL ELEVATION.
PIPES TO RISER WITH GALVINIZED METAL STRAPPING.
PROVIDE TEMPORARY WASHED STONE FOREBAY BERM, SEE
FILTER AT DRAW DOWN PIPES DETAIL 4
ON
OMPACTED STRUCTURA
NORMAL WATER SURFACE ELEVATION LL IN BERM '
_' a r`•.,.,•rt:.
lift
POND FOREBAY
0.50% SLOPE
a fr*
POND Br s
W.�����
r 1 1
•r 1 '! 1
C1.04 NO SCALE
12' SHELF 12' SHELF
12' SHELF
ON 4" CENTERS,
Y AND VERTICALLY,
0 HAVE OPENING
3 3
4 NORMAL WATER SURFACE ELEVATION
AQUATIC VEGETATION ON 12' SHELF 6 3 POND 3 6 AQUATIC VEGETATION ON 12' SHELF
SHALL BE JUNCUS EFFESUS (SOFT �1 5 1� SHAH BE JUNCUS EFFESUS (SOFT
RUSH) PLANTED AT 18 SPACING. RUSH) PLANTED AT 18 SPACING.
�-COMPACTED STRUCTURAL FILL 1.0'
MIN. BASE THROUGHOUT POND.
1A WET. DETENTION POND CROSS-SECTION-
C1.04 NO SCALE
NOTE: SEE SHEET C1.03 FOR RISER LOCATION.
ANTI -SEEP PLATE
A ANGLE GASKET
A S
6 DETAIL AA
BOLTED CONNECTION WITH GASKET
0T)t ANTI -SEEP COLLAR DETAIL
C1.04 SCALE: NONE
L
n
0
NORMAL WATER
SURFACE ELEVATION
1
POND
8' (MIN.) LEVEL
SPILLWAY PROFILE
18" DEEP CLASS 2 RIPRAP 1 10'
B,JE-�IL'�I�j,�ll� z
� TFILTER FABRIC
SPILLWAY CROSS SECTION
SPILLWAY DETAILS-
C1.04 NO SCALE �#
AQUATIC VEGETATION ON 12' SHELF
SHALL BE JUNCUS EFFESUS (SOFT
RUSH) PLANTED AT 18" SPACING.
BLACK 30 MIL HDPE LINER (RUFCO 3000 B OR EQUIVALENT)
;h, i
Q t 6" - 80 RIP-RAP
-,--rFOREBAY BERM
I!-:
FOREBAY
TiffI
NOTE: SEE SHEET C-2.04A FOR EXTENT OF
RIP --RAP IN BERM.
FORE BAY BERM RIP -RAP SECTION
C1.04 NO SCALE
+]�11r1�t1[rI►Tip+P►I11�►�1i;11�►1�[+1����.
�:��:1.91��.1�1���11�+I'i7liitl�l�.1f►11 �►•�� ll .,.�.>R:����+]i�!L�+�
1. GRASSING AROUND ANY DETENTION/RETENTION FACILITY SHALL BE MAINTAINED TO PREVENT THE EROSION OF THESE
AREAS. THE AREAS SHALL BE PERIODICALLY MOWED TO MAINTAIN THE AESTHETIC QUALITY OF THE SITE AND TO PREVENT A
REDUCTION IN CAPACITY OF THE STORM WATER SYSTEM. GRASS ON SLOPES SHOULD NOT EXCEED A HEIGHT OF 15 INCITES.
2. OPEN DITCHES SHALL BE KEPT FREE OF UNDESIRABLE GROWTH AND MOWED OR MAINTAINED TO THE DESIGN
CROSS-SECTION AND AREA AS SHOWN ON THE STORM WATER MANAGEMENT PLAN APPROVED BY THE CITY AND ON FILE IN
THE OFFICE OF THE CRY ENGINEER. GROWTH ON THE SLOPES AND BOTTOM SHOULD NOT EXCEED A HEIGHT OF 8 INCHES.
3. LANDSCAPING OF THE AREA AROUND THE DETENTION/RETENTION FACILITY SHALL NOT REDUCE THE CAPACITY OR BINDER
OPERATION AND MAINTENANCE OF THE STORM WATER SYSTEM.
4. THE FACILITY SHALL BE ROUTINELY CHECKED FOR AND CLEARED OF ALL ACCUMULATION OF DEBRIS AND THE
DETENTION/RETENTION FACILITY OUTLET STRUCTURE CLEARED OF ANY BLOCKAGE THAT IS PRESENT.
5. STORM DRAINAGE PIPES AND CULVERTS SHALL BE PERIODICALLY INSPECTED FOR DEBRIS AND SAND BUILD-UP. THEY
SHALL BE CLEANED AS NECESSARY TO PROVIDE FOR THE FREE CONVEYANCE OF STORM WATER AS DESIGNED.
6. THE DETENTION/RETENTION FACILITY SHALL BE MAINTAINED AT THE DESIGN DEPTH AS SHOWN ON THE STORM WATER
MANAGEMENT PLAN APPROVED BY THE CITY AND ON FILE IN THE OFFICE OF THE CITY ENGINEER. THE POND SHALL BE
INSPECTED ON A REGULAR BASIS BUT NOT LESS THAN EVERY SIX MONTHS. DEBRIS AND SEDIMENTATION SHALL BE REMOVED
IF:
(A) THE PRIMARY OUTLET CAPACITY IS IMPAIRED AND/OR
(B) THE DEPTH OF THE FACILTY IS MORE THAN ONE FOOT ABOVE THE ORIGINAL FACILITY DEPTH OR FACILITY
VOLUME IS REDUCED BY 25% OF THE DESIGN IMPOUNDMENT VOLUME
7. LANDSCAPING SHALL BE MAINTAINED TO ENSURE THAT LANDSCAPE MATERIALS LIVE AND PROSPER,
PEEMMEK SEEDING
Seeding mixture ,
Species, Rate (lb/acre)
Tall fescue 80
Pensacola Bahiagrass 50
Sericea lespedeza 30
Kobe lespedeza 10
Seeding notes
1. From Sept I - Mar. 1, use unscarified serf seed.
2. On poorly drained sites omit sericea and increase Kobe to 30 Iblacre.
3. Where a neat appearance is desired, omit sericea and increase Kobe
to 40 Iblacre.
Nurse plants.
Between Apr. 15 and Aug. 15. add 10 Iblacre German millet or 15 Iblacre
Sudangrass. Prior to May 1 or after Aug. 15, add 25 Iblacre rye (grain).
Seeding dates
Best Possible
Early spring: Feb. 15 - Mar. 20 Feb. 15 -Apr. 30
Fail: Sao. 1- Sept. 30 Sept, f - Oct. 31
Sol] amendments
Apply lime and fertilizer according to soil tests, orapply 3,000-5,000lbfacre
ground agricultural limestone (use the lower rate on sandy soils) and 1,000
tbtacre 10-10-10 fertilizer.
Mulch
Apply 4,000 Iblacre grain straw or equivalent cover of another suitable
mulch. Anchor straw by tacking with asphalt, netting, or roving or by crimp-
ing with a mulch anchoring tool. A disk with blades set nearly straight can
be used as a mulch anchoring tool.
Maintenance
If growth is less than fully adequate, refertilize in the second year, accord-
ing to soil tests or topdress with 500 lb/acre 10-10-10 fertilizer. Mow as
needed when sericea is omitted from the mixture. Reseed, fertilize, and
mulch damaged areas Immediately.
�Refer to Appendix&02for botanical names.
EMMEW SEEDING (LATE &WftLY SPRIN
Seeding mixture
Species Rate (Iblacre)
Rye (grain) 120
Annual lespedeza (Kobe in
Piedmont and Coastal Plain,
Korean in Mountains) 50 B 21 AUG 06 DWQ SUBMITTAL REVISIONS
Omit annual lespedeza when duration of temporary cover is not to extend
beyond .tune. A 1 AUG 06 DIVISION OF WATER QUALITY SUBMITTAL
Seeding dates REV. ISSUED DATE DESCRIPTION
Mountains -Above 2500 ft: Feb. 15 - May 15
Below 2500 ft: Feb. 1- May 1 KEYPIAN
Piedmont--Jan.1- May 1
Coastal Plain•--Dec.1- Apr. 15
Soil amendments
Follow recommendations of soil tests orapply2,000 Iblacre ground agricul-
tural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance PROJECT TITLE
Refertilize H growth is not fully adequate. Reseed, refertilize and mulch im-
mediately following erosion or other damage.
TEMPORARY SEEDING (SUMMERi
l�1
Seeding mixture
Species Rate (lb/acre)
German millet 40
In the Piedmont and Mountains, a small -stemmed Sudangrass may be
substituted at a rate of 50 Iblacre. P.O. BOX 1029
Seeding dates MOYOCK. NC 27598
252-435-2488
Mountains -May 15 - Aug. IS wwrt.blackwaterusa lecim
Piedmont -May 1-Aug. 15
Coastal Plain --Apr. 15-- Aug. 15 SHEEP TITLE
Soil amendments Follow recommendations ofsolltestsorapply2,0001blacregroundagricul- WAREHOUSE
tural limestone and 750 lb/acre 10-10-10 fertilizer. STORMWATER POND
Mulch DETAILS
Apply 4,000 Iblacre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring too].
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch im-
mediately following erosion or other damage. ARCADIS
TEMPORARY SEEDING ARCADIS G&M of North Carolina, Inc.
Seeding mixture - 801 Corporate Center Drive, Suite 300
Species Rate (lb/acre) = - RalE.igh, NC 27607
R/e (gin? i20 Tel: [phone] Fax: [phone]
www.arcadis-us.com
Seeding dates SEAL `►'00111t111111 iSEAL
Mountans--Aug.15 - Dec 15 ����� ��1 • CAROB
CoastalPlain and Piedmont -Aug. 15 - Dec. 30 �•� �.••• i
Soil amendments -
Follow soil tests or apply 2,000 Iblacre ground agricultural limestone and 2 197 `
1,000 Iblacre 10-10-10 fertilizer.
Mulch 000 lb/acre straw. '!����'� • � P�����``` Apply 4 . Anchor straw by tacking with asphalt, netting, �ir�rttttttt►t►►►►►
or a mulch anchoring tool. A disk with blades set nearly straight can be SEA NCT vum UNLESS SMGNED AND DATED
used as mulch anchoring tool. PROJECT MANAGER DEPARTMENT MANAGER
Maintenance R. LEE R. KING
Repair rind refertilize damaged areas immediately. Topdress with 50 LEAD DESIGN PROF. CHECKED 8Y
Iblacre of nitrogen in March. If it is necessary to extend temporary cover
beyond June 15, overseed with 50 Iblacre Kobe (Piedmont and Coastal J. ALLEN J. BECKMAN
Plain) or Korean (Mountains) lespedeza in late February or early March.
TASK/PHASE NUMBER DRAWN BY
000D1 M. DYDULA
SEEDING SCHEDULE PROJECT NUMBER DRAWING NUMBER
NC;406005.0000 C1 v04
r