20031313 Ver 1_MAPS_20031024

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Weir length and depth -Keep the spillway waist kast4 Wong and sized to
i~ 00
N •-e
< N
Dewatering
­ a
Emergency spillway
pass the peau dbamp w of tiro to -yr stunt (Figure 6.60a). A max -urn flow
Pipe outlet to Fiat Area- Pipe Outlet to Wel!-defined
Concrete block
Cd �N
A W C3O
Riser pipe for principal
depth of 1 ft, a minimum froeboard of 0.5 ft. and maximum side slopes of 2:1
are recoamte+u3ed. Weir Icngth may be selected from Table 6.60& shown for
No Well-defined Channel Channel
-
""�" --'��
IW � .���
Excavated area (as required}
fQ �;Uw
00
spillway y
most site hxatim in NorthCaidma.
00
0 �z
�--�_
v
>Un�
Op
Trash rack tl` _ Freeboard 1' min
� " '•: A
Table 8 6t7a ,fl
Design Splaways Drainage Arca Weir Lonpt!!
p - A
-
tt 1- -
Side slope 2:1 _ �I -
=illl�� y 1 Aocumutated
Per
�--
Embankment stabilized
of
I 4A (entree) oft}
A
d_ --- q
,�"
-,�+ -�
- I tri ' It .`t� I,l sediment
Drainage hilesi « ' - with vegetation
z s a
t
_ �-
-"
weep toles
Excavated de h, = i to =illi t+r.•
pt � Gravel -supported by
Lo
C I
_
r I
with gravel f ip - ! I- f
3 g -o
4 10.0
--
fY0 �•ON
o U Q (0
(( lilll� hardware doth to allow
min 1 , --max 2 • i l"' dewatering'
, t t
t11 C
2.5:1 slope m
5 120
--�-
below top of inlet '- l drainage and restrict
0-4 (~�
Pian
�---
tl sediment movement,
If
C)
EmaoiE
+Dimensions shown are minimum
Pfau
opo
Z
Tn w
AII{1 Selected fill t:t collar P
flotation placed in layers Principal Stabilized
block spillway Cut off trench, outlet
La
Ad ilii
'.fir- •."� min'•----�'
/-
2:1 slope, gravel filter
:•.-fes•-.t-: j•:
JJ
o Z
and compacted
barrel - 2' deep
5ft
,. min y
i.s n
k:;;��1800
t acre { A t
? 5ft
2 /
Il r �"� La
ill
Section /1A 1'Filter T
blanket
,,..,
Temporary sediment Wire screen Dewatering
Flaw
Flow `ti\�`+tr��y��
�� � : _• a
(.).Cf) �' J
mix
a
Notes t Section AA I
: 'f�I_
pool
----- --
��� ��j •� ���:"u1/� �i�,•%
k
Cross section Fat&ttatxic
1. la is the length of the riprapy
apron. Filter
P blanket
-- ---
_ _ ' ` '
1 min ie.
2' max '_
•'� • fes' %", %"
��� :: ���
2. d=1.5 tunes the maximum
stone diameter but not less
than 6".
:j
\'t = �� Drop inlet
• •, /`/
~ •p'%- �- e \ \� Flow
Date: 12/09/03
Scale: N»=100' Hor.
aealgra 21 • overfill s-
Checked: DLM
_y
with
iii
of 3 Sheets
� �� for SeaTememt
3. In a well-defined channel ex-
Sediment grate
Flaw
�� -
tend the apron up the channel
st I to a 4hms'm mn� taut
banks to an elevation of 6"
6 92a Bleekrvld gravel drop caret palaiac5at+
�'"' '
i15" 2:1 side Em
I ~slope
above the maximum tailwater
Temporary sediment pod Nre mesh
5 B am by-pass
neon as Fitter t
depth or to the top of the bank,
whichever is less.
(optional)
t:t side Stops sedled
fabrra __
- Tait Nutter ot dam
4. A filter blanket or filter fabric
- -
-
1 • min 2:1 slope &I slope
9"XI d
should be installed between
2' max
mm
the rip rap and soil foundation.
ravel
Fine (;min In 3 •
Construction L site preparation¢ -Clear, grub, and strip topsoil from areas under the em
Stone section
� �� Te�Orary �� �'
Construction 1. Ensure that the sabgrade roc the Ether ataa'n" follows the required lines
thickness) stDne lI- - i+ � :A
t
Specifications bo nkment m remove trees, vegetation, roots, and other ckiectiosable material.
To faci'!rnue sediment deanow and munration, clear the pool area ofall brush.
Construction L Clear, grub, and strip the area alder ft s bdulkinera of alt vegetation and
Specifications and 02des shown in enc Imo, Compact any fill requited in the subgrada to the
density of ft surmunding mrd aurbed material- Low attars in dw subgrade on
Float• As2b Gave! &W inlet proam n Wnavel donwf.
Design Criteria Limit rite drainage arca to 1 acre, xeep the minimum depth at t ft and the In"-
twa. and other objecrioaabte materials. Stockpile ani topsoil of soil containing
root asst. Remove ani smfaaee soil containing b'& amounts of organic macer
$peCIfIG'3tian5
undisturbed soil my also be fil ed by inrYtasieg the tiptop 1hleJmess
ilWtm depth 4t2 ft as measured front the exit of ilio inlet structure.
organicinmerforuseaattteottterstmlioftheembt okment W facilitatevegeta.
five establishment. Place temporary sp�rt+ereicarttaol measures brow the basal
and stockpile m dispose of k . Haid all objectionable material to ebe
daaignaoed deposal nes.
Z. the tiptop and gravel Elba must mmformr to die specified
�� IR�g limits
Maintain side slopes routhe excavation no steeper than 2:1.
as traded.
2. Ensom than fie material for the embankment is five of toots, woody vegeta-
oon.
shoot o Ute plana.
3. Filter cloth, when used, ma ;s, TTtea design tsegttirtxneats be
Construction 1. fay ow bock an oath side of the structure an its side in the bomm raw to
Keep the minimum volume of excavated area armir d the drop inlet at sp-
35 �� ���
2. Cast-off u+e,acl--Excavate acct -off trench akwag the eefualirfa of the earth
fill embankment. Cut the trench to stable soil material, but in oto case make it
matter and other ob' material. Place ft ill in lift net
to exceed 9 Etches and machine compiIa it Overfill the embankment.6 inches
lad 1��
1 from punching or Wa mg daring imurdla m Repair any damage by
albw poddrgmp. r a fau utalkm shmldb--e=avaudatteast21=besbelow
Specifications rhe'crestaf the mum drain. Place the bottom row of blocks against the edge of
�'ma�r
toss te2ttofoeg, ThectN-otTaenchrtelstexteadiaoobdh abnoateantsbatlt�
to snowfmrsculeneet.
��ng�rprap'�piaciqanotterpicaoffiborekathOv0 dodamaged
a� � �nw .
tmglants *a Id overlap a minimumof 1 fL if the damage is
due stocmdraia forlaterai at�ortartd to avddwaSltatrts wbtatovecibwaoctas.
thebasintorKsiletonditionf.withftion estdimensionodenteatoward
� g .
the lwgcst inflow area to, provide maximum trap efficiency.
the elevation of the riser crest. Make the minimum bottom width wide aloxgh
topamicopen ionofexcavarionandcompaecateguipment but in no cue less
3. Construct ftoudetsoetioainthe embankment. Protect the connection be-
tIENnSi0.replaca teemimfalvYcbth.
If needed. ## ;acral support to subsequent tows by placing 2 x 4 wood suds
dwoughbiocltopeaiugs
than 2 fL Make side sk pes of the trench no steeper than 1:1. Compaction to-
quaentdas are the same as Wose for the embanklmamt Keep the rr�dich dry
tweendtedprapandthesoilfirompipwgby us®glilmrfabricorakityway cutoff
ttenchbetweenthe " strachmeanddiesoil,
r+pntP
4- Ydeph�dl►Y Ate.bullatecatt toavmiddamagwrtgthefel-
E. Carefnlly fit hardwaa doth or coapArAble wire sash with ltl.-itrCh open-
hasmitpmvisions 0rdraining the temporary pool to improve capping �caen-
farsmallsuxms;mdtoavoid from weerafterheavyrains.
tY problem g
dttriagbsckfiilingaradcompaction opaatiau.
PlaaetbefhllerfabricbehveattheripwpaMsorii.lExtendtbefaLricacross
�•
lags overall block openings to hold gravel in phot
3. Embanlaneat--Tata fill material 6utm dw appy areas drown an the
the spillway frnadstion and sides a the top of the dam; a
5. The eninimwa thiclmess afth sriprulpshoutd ba 15 tunas the maxiraurn stone
3 Use clean aced 2 inches below the to
gravel,31st- b 1!L-itrdt is dletetaer, pl p
Lam t3esartheareaoialldebris thatmighthirtderexcavationand•disposalofspaiL
p Inns, it shoWd be dears mineral soil. free of moon. woody vegetation, rocks,
wa
• excavate a keyway trench alongAe. centerline of the spillway foundation
etending UP the sides a the height of the dam. The tnearch should be at
diameax•
of the block on a 2:1 slaps or tlattet arta smooth into an even prude. A(if`i37
Specifications
2. Grade alae to the inlet stn aunt
appy y
ami other objectionable material. Scarify area on which fill is to be placed
before placing fill. The fill material must contain sufficient t moisture w it ere
kat 2 ft deep and 2 ft wide with 1:1 side slopes.
6- Rilrap may be field stone or rough quarry ytpose. It should be hard, angular,
highly weather-rodstaot sled we t graded.
waded aDDe
4- If only stoma and gravel ata used. keep the slope toward the inlet no super
A Proaco weep holes by gravel
be totmwd by hand into a hall without crumbliusg tf water can be squeezed out
4. Ckarthae areabeiow dhedevationof tnecrestoithe
Pana spillwaysabo m
than 3:1.f nwa. minimum 1 -ft wide kvetnoneareabetwoeftftstrnehrasad
of the batt, it is too wet for tion. l ares fill material in 6 to 8 tach
��
catiaaroualrnraovertheeatitek»ptthofthefigartaarddseacamrometitCont-
detGaadnt deamolt
7- Construct the spina of mo; lade with roto ov erfaii at the end. Make the mP
flee nPsP at the ,town level
around the inlet 0 prevent gravel from entering inlet. Oa the slope toward the
WIM sae Now 3 inches is diameter w slope ay
h� on the caw filfm time iota
4. Wben the contributing drainage area has been penmatteatly stabilized. seal •
weep holes, Cdf the basin with stable soil to final grading cicv2dorrt:. compact It
PwA= say beobm=Mby muerte tt ooaswwA= bm ft cquk manovcrtbe
d0aa
S. Ali cut and frit ahold be 2:1 a flatter
ttreatr cod with Una receiving area or slightly
be
below it.
_
1/2 - 3/4•aN:h gravel (NCEXyC 1f57 washed stone) at a 1nin6altas tuckaes/
property. and stabilize
fell so rack the ettfireTa of tach layer is traversed by at leads, are whorl or
Of' 1 IL
tread trackof the halay aghrpmett,ars canpactor way be aced. Coasatrcttha
aqui
anbankmenteandevation10%higltcrthanthe design height toallow for set:
i_ Ematae that tbw elute (drainage) action dthw emberdurtart has a minimum
bottomwitWtof3ftsadmaximmnsdedopesof1:1fruexodtothebotiom
_
& Ensure that the spree is pr+aperly aligned with tlx receiving stream and
pstetarablYstraightthonghoutvtkzngth.ifacarveistdeededesfusiteturd-
Maintenance
.
Maintenance and suinudinriteexcavatedbasinaftweverystormwM
� pxoperir
ding.
of ac > r
tions, piece it is lite: upper we& a of the apron,
laspatthebarriersellereachtelaandmelterepairsaswaded,
dieoo ubxingMimagearabubaapam mendystabilize&Tapro,,idesWs-
factory bailie df ick ucy. remora sedimem when the volume of the basin has
4. Conatll epidlwstys--�ocmwly attadr tta titer to due Dawei,ar barrel attar a
7. Coastrtret rite mimimnan rmislaed slant spt7lway bdtae widtt, ffi sbatvn on
9. Immedately atter comstrnrKix q stabilize an dstltlbad areas with vegetation
Keown sediment as necessary to prrnlds adequate statagts volwna for sub-
degarerutrriacs,
been reduced by ane-ha1L spread at excavated material evenly avec the sm-
maka a wateAigM sttucural cofnoaiaaa.Same an ear►octiau between barrel
Ute plains, with 2:1 soda dopes aaarddltg to the top of ire avec fdiod ehaWbank•
( 6. 10. Temporary Sm fav, and al 1. Per/tnatWsee ding).
rounding laird avec a stockpile and stabilhra it spptapna y
smiomby approved wate,tigd mcrablia. Paco d w b and and dowah s firm,
meal. Keep tiro thickness of the sides of to Spillway outet"cam at a rind-
smooth foundation of impervious soil. Do not ttfe per+rieul olataci&1 such as
mum
1Whon flu ootulri
the con re� has beenall
sand. gravel, at crushed stone as bacUM around do pw or and seep eofbrs.
desiga opo ft.
Maintenance hMapootdpw aura seta,. a re, heavy rains Tfl saes ifany trusion aodtrW Ot
a� arrsgb
andproperly.
fate
Plata rite fill tentaiai 8r0ued due Pupa spillway tl 44ech layers and COmpla it
below the tiptop has taken place err if wanes have been dislodged. immaliaiely
Bring rico disturbed area to proper gratia. Oran srmulotl and A.
compact Ap.
under and amtmd the pipe oto at hast on tame dimity as the aatj>rat embwk-
s< Wlaiat toed is rite stone sectio& dhottld ba a.rwit-paced mixture of site
rtatce all rheedet! eepeirs to peeve tt Lther dam.
t 7 > alt hero areae arodaed lbw iokt.
merit. Cafe unit be bakes act to raise the pipe hM lira mmbmt wiv ins
wide a dse siaeof 9 hichea (doss ti emaioa aWd atone is aecommendeG and
foundation when compacting amdw the pipe haod L
a maximum a- zin af14 kcbc& 11w mm mW be a mcbim plated and the
t
Pb=mW=md rhat2ftof�. =pwied wM-- tdw*clf- I
smacks stones waked into the voids of tin terga stones. The stone should be
hand.aag�>�,�dhigf Yoe Cant.
RIP RAP OUTFALL PROTECTION_
BLOC AND GRAVEL INLET PROTECTION= �, K REV.
EXCAVATED DROP INLET PROTECTION ISM. No. REV
before, ro®rrgftwitlearntrua�onequipmen .Awbordeaaanitplocebycow
ceate<trather aaoryrrteadtaloprevartflotatioe Iaekraasdboeldmapipa
9. anethatUtesmnespiHwayootasocuonaxxmasdownsaeampastthetoo
�,o- E„
(NO SCALE) 20.55
(NO SCAM 30.08
NO SCALE 30.0 41 1
conduit ba iamUed.by cretiag a 1rnaCA tuergh tto dem afttr ice aubeekpeet
of the embw* m m until stable condition ate reacbod and*uftvdpcity is ac,
iseompIae.
txptablefatlhereaiviagstteam.Kweptheedgecoftheslmneoltiufltsh
wide the srrmumdkg gmwAwW shape ft center w 000fm ft outifow om m
S. EtriergerlCy sc�iray---lestail the emergeary spillway in taadianrtted �eiiL
The achievementof planted alavadonst, desilp width, and entrance d
(RtWexcew OuAkrProtecdon)•
VARIABLE AS DIRE ^•TED BY THE ENGINEER
_
STEEL POST STEEL POST
A
exit chaste! elopes are critical b the sugcessful operation of tiro emergency
spillway.
6. Inletl-- water Into the basin in a amulet tt1 P I*vM ta*dM Use
ptololaioD pear
diversmvndiauta lodlWutSOaigiurt4adeswatertoiMu oma
tie improve basin (R R&wffComvof
1t! Direct emergency byp&}s to natural, stable areas: Coate bypass ooeim so
that flow will notdamage iltt embankme&L -
11. Stabilize ole embookment and all dtstmbed areas above tie sediment pool
and tl0wndlteallt 6Dm theltHp imatediarly afurconsmmcdoa {Rejutac= Saw
(t • MAX)
,-
FILTER FABRIC FILTER F
�
" °Q�
t.5 r
min
min
of pool weir a trap efficiency jferencita:
J6ee Stabttt: oa}.
WOVEN FILTER FABRIC
i �iL -
r
JNaapvtaand0arktProt#rriwri•
N
4ny N Ea''
Filter
12. Slow the freer) the top d taw spillway to the
ed. cleanout
fBbflC
7. Eiosiwr caat:kl--Camsonut do strocosto so that die disbubed emit is miaoi
ibe design thesedri
(omC taatf the design depth}oa the plans and marc it in the Crc�
mused. DiwA atrface water away from here areas. Complete the embankment
before rite area is deared. stabilize the emerIlency spillway embankment and
disbubwd of the spillway immediately
Maintenance ,aspect temporary sediment ova ant r coat Period of silpdricent rainfall.
� 1
3 �
ANCHOR SKIRT g' MINIMUM ANCHOR SKIRT it taIINIMUu
11
A
all other areas above the crust principal
allot construction{lfrrereacrs: Satjiact Stabitiaatiarr).
Reuhove aedmantand testate tba trap io its arigisal whoa tlhe sed;-
meat bas accumulated to ono-bW tiro design depth or tie top. Place the sad;-
b l i
n -
N
CErOSbnControl
K Salega--Sedimeatb�asImsmay aursetcbildrenamdan danguoAvoid
fence bW= wamir4ssns_sips if trespassing
mat that is removed n do designated disposal arra and replace the
contaminated part of the gravel facing.
- -
�'s'Tt��
W UEU OF BURYtNC SKItT, !t• Oft
/5 WASHED STONE MAY SE USED
Stone
slap side signs, and and mark with
islikely.lroilowaRstateandlocalrequkements:
cErhrRAt
maTEs t. RLTER FABRIC FENCE SHALL BE A MINIMUM OF 37' It WIDTH AND
OVER TURNDOWN. 1. WER BM410 S SHALL BE INSPECTED By THE FmrlV c KLY
RESPONSIBLE PARTY ORHIS AGENT IMMEOMMY AFTER EACH
Filter ?i 2411 max
Check the sttuclaw far damago fiorm erasion or pipimg, l� ux5colly check the
SHALL HAVE A Mi IMUM OF 6 UCRaC. NE WIRES WITH Ir STAY SPA
RAINFALL AND AT LEASTSVA.L DAR.Y DURING PRoLONOED RAINFALL
fabric at center
depth of the spillway to ensure it is a minimum of 1.5 ft below the low point of
2. WOVEtt FILTER FABRIC BE USED WHERE SRI FE] ICE IS TO REMAIN
FOR A PERIOD OF MORE TWW 30 DAYS
ANY NEEDED MADE
LD
Maintenance ChwkddfimentmA=afwrparkwwoE drarmotnmnfRemaveSedimmww
theeugminmeaLinm ediaWyfigan settlemestoffternbankamisWslight-
SHOULDTHE FABWC
2. OR ECOMENAMEDIIt4EF E
WOW
rnstoaethebas®tDitsaigimalahpta�oeswhensedmentalaahmulatestooro-
ly abaft design glade. Any riprap displaced fMtia the spillway maab be
a STEEL POSTS SHALL BE W -Cr IN HEIGHT AND BE OF THE
SELF -FASTENER ANGLE STEEL TYPE
OF•THE EXPECTED USABLE LIFE a nit BARRIER SM; IS IIECESSSARY, THE
FABRIC SHAG. JiE REPl1tCED PROMP1t-Y.
'pn -
half the desip depth.
Check true embankment, spillways. olid outlet for erosion damage. and tacpea
nviamaimmediatdy.
After all s�nem producing areas have been permanemty . temaow
f. WOOD POSTS SFAt1 BE 6 TO 7 FEET IN FBtCN" AND 3 7D 4
WOOD O DIAMETER WARE FABRIC SWILL EI FASTENED 3 TO
INCHEWOODEN POST ET NOT LESS THAN 9 WIRE FASTEN t TO tANC
11
3. SEDItEHT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM EVENT OR SILT
_ FENCE SHOULD BE REPLAM. THEY MUST BE REMOVED WHEN DEPOSITS REACH
lire embankment for piping and semlamat. Make Ali necessary spews um'•
the structure and all unstable sediment. Smtwrh Ude arras m bierW with tie ant-
S. VIASHED STONE SHALL BE USED TO OURY SKIRT WHEN SILT FENCE
APPwm HALT 7HE moc"r OF THE swum. ANY sEO mm oeposus REMUYIeNO err
PLACE AFTER THE SILT FENCE IS REMOVED STALL BE DRESSED To CONFORM
Stores dfedadorm- Sane atatid hwpt&a ad aver ila4 d#aarawl thanks m seep tr&mr irwnaaamrg arosrldtlae drat
mediately. %Taewve all stash sari alter dclris from Ute rixrand pro01 area.
joining arm and smiiixe property (Rej6naras: SII fwe StabWzadbm)_
IS USED A"CENT TO A CHANNEL., CREEK OR I VW
TO THIE EXISTING GRADE PREPARED AND SEEDED.
6. TURN SIJ FENCE UP SLOPE AT TENDS.
TEMPORARY RISER BASIN
TEMPORARY FILTER BASIN
7. WHEN FABRIC iS USED Wan VIVIE MESH V CEN (FRED POSTS MAY DE USE.
TEMPORARY SILT FENCE gip. NO. REV.
L The distance such that palms
A lira B ars of equal elevation
Sin. NO
STD. NO. REV.
(NO SCALE) 30.01
(NO SCALE) 30.02
(NO SCALE) 30.06
A $
s L
_
n_t
Conhpacted sol 2'
mfr s►�
�::� ? %: •� J . • Fto`►t
1 1 2 • min top r
: _ _:;�:: ti • iraebeitl►d
Construction L Place soo ne to ow tinea and �mmeesions :droirr in the plan on a fitter hbric
4" THICK 3000 fisc CONCRETE LID w/ TXT, 10-10 WiIiM
:':
•
:-'ri:==; .; _.:: = - -_' ;:� *: z._ ill" min �'�
Mill II I tIlil Ill il(
err .-:: �.: Y ° T
Slope --
t� r
J,d\o 1001
Q
fi tions
Specifications
9 levet
-
- 1
i I�i�
a lfl;* t 111 rl ttf__ _ it
2. Keep the odtter Stone section at lest imcltes below recital gtunrsd
3'-0" x 6" OPENINGS TYP. ALL 4 SIDES
I I I � Ili II !II --••") .-
it 8'typieal -
r1 �
a flatter
,f
wlHaeethttdamabutsthedtamnelbanla.
_
3. Extend senna 1t lead 1.5 ft beyond the ditch banks (ifignte 6.836} tD keep
ovedlow water €tom undercutting the Mara as it to -cam the charnel.
X=zX X
r- �-
JAPD FINISH GRADEf4.
Set spacinglietweendams; tcaunuo u the top of rite 1o+vrr
' 3!.!!0f3"min
2-3• �2
dam is lbessimeas die toe elevation of Ute upperdam
.e
j
meg S
coarse ate
S. gthat
cmmi&dpiinuim
541, Qut�
\ a
water will flow ow and around the damWhicdtx Sw
w
8 SOLID MASONARY
°
Construction L Remove and properly dispose Ball trees, brmh. atampa, ad other objet-
Construction L Remove and nVedy dispose Oral woes, brthstr, stomps, errotherobjet-
� '
•
Specifications tia'ig"maraial.
tiottable ahnaial. Fp ,y (
'Specifications. compact all nitches, maim argullies drat: will be
-
i. Matra slue tisabthednamnd rrsch abpvethamoraupsramdamn is stable.
D d
2. Ensure thattlreariadmumrhetrslructedetods sntxiatnmtxtsafldesigm r
crossed b taadral promd lord a above,
• eVAfWS
2- Just before placement of fill, the brise of the ridge should be disked byttarsble
machinery.
Construction 1. Gast the and exit area of an vegetation, nota, and atter obja-
Specifications ttut�t anti plDpaly lV+rlo ft,
' s T. Ensmre that cltarrte! aipptrtematloes, sutetu:a tulvaalt entrances below cock
dans. =alt subject to doup or blocitage from displaced stores.
3. Farsxratmtrhetnpofrheriifceisratxloaveratanypoiattrarhthadwaigneteva- -
'
tion plus the specified satemant
3. Fscavateshapeands
,.gbifiutheNtivrs�trtoiitte,ftTade,atMlcrosssectiotr.
x plate twipavef rutile specific grade and dimensions shown on the pleura.and
Maintenance inspect cheat dans amdi lrmwis for damagw after each m uoff event.
pPARGE ALL INSIDE WALLS
4 WITH 1.3 CEMENT/SAND
12" 3/8' MIN. TFIICKNESS
4. provide sufficient roam around diversions w pamik madhine. mgtadng and
charaut
m mid is the design DLU
4. compact the ridpin tan prevent outer' al sar,emea and to provide stability
fatwothit.
3. Provide dni�e W catty water W a s{admostht trap or eliher snllabla owlet.
ce and depositioni abc" the check dam and erosion from
»nnlodiatelY• if
against
- exp.
highflows around edgesoftbedwo. Catect all *WAV
�,
� Yegatata Urn• ridge immediately arta pian. unless k will trnsim in
0. Use geotrauile iacbrixx became they itnptoeve stability of the fomradstian in
nificaal eroaiolt toots between dams. itlsal! a protective riprap linea is Haat
LYmmnt!s).
h , .
plata les dm 30 working days,
3. Vag et tiv elystabdize the diversion of aids at
im"flion
kacatkaia aubjea to seepage a high water labia
portion of die cbaa ncl (Practice; 6.3 Rt 61. wup-tired and Paved
' -X --�•X Jf-'� X X b: X r
maintenance
Remove sediment accumulated behind. tiro dam as needed to prevtnt damage
Maintenance inspect temporaydivaaionscow aweek and attereveryrainfall.Iamodime
inspectpemmaatemcelivetsioaaafteravtr!,aamfalidaringt,eeoassxatctoaopera-
bum-1mmodiately ra=ft
Maintenance Mmiruinritegmvdpad inacondition toprevent mad orsediment fromlesv-
2
toehwunivegetarian,allowthechasterwdraintlrouohorasntsmashackdam,
Oe dam. Aon w
ly remove sediment from the flow arta and repair de diversion fridge. Careful-
my obdtntaY sus firm rite flow an and repair the
log da construction site. Ibis may require periodic sapdressing with -inch
and p rant large flows farm atrying sediment over stats
!y check outlets and make timely repand ars needed. When the area protected is
dveraiaa ddr• Qe*oatcts and make 1 itnely apans as rot eded. Maintain the
nom Afterewh rginUL inspect amy st wum lased iotrap wdkr#M sad clan
dans as needed to maintain design (sight aW cress atsctien.
$' CONCitElE BASE w/ SxBy 10^-10 WWM
p°""a1e"�' staMiaed, remove the ridge and taw dsarmel ID blend with the
vegetation in a vigorous, healthy ohm of at aU tiaras.
k ant as necessary. Immed�elall remOve aobjectionable materials spilled.
�°
natural ground levet and appropriately stabilize it.
washed. err each d om public roadways.
YARD (AREA.) DROP INLETS-fD,
TEMPORARY DIVERSION SWALE �: No
TOP OF SLOPE BERM �, No, fzf_y,
STABALIZED CONSTRUCTION ENTRANCE s}, Nfl- R�
TEMPORARY ROCK CHECK DAM STD. NO.
No. REV.
�,,
NO SCALE) 20.57
(NO SCALE) 1,30.051
(NO SCALE)'20.50L__(NO
SCALE) 30.11
(NO SCALE} 20.60
Location: PR -20 PUBLICATION OR REUSE OF
THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH
THE WRITTEN CONSENT OF PIEDMONT DESIGN ASSOCIATES, P.A. Owner:
Approved: Date of Issue: JAN 15 2004
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REVISIONS
BY
Date: 12/09/03
Scale: N»=100' Hor.
Drawn: JMY
Checked: DLM
,Job: 03-07-06
Sheet
GR -3
of 3 Sheets

_ ~T _ _T a
i't ~ ~ ~w
_ ,Z d j _
_ _ E. ~ a~
~ ~
S ~ ~ ~ _ _ _ _ r ~ ~ ~ - o ~I Q ~ o ~ J a
~ ~ li ~ ~ . ~ ,
~l / ~
~ y ~ ` - ~ ~ ~ , ~ rv ~ M ~ ~ C. ~ ~
_ t 710 , ~ ~ / ~ o~ ~ W m ~ tt. o y1 s~ o
~ ~ S1-. ~ ~ : l~
G~ ~ ~ ~ : , ; , 708... ~l ,r NE r ~ ~ ~ ~ ~
3 ~ ~ ~ ; ! ~ . ' ^ { ~ STAB CONSTR ION ENTRA 708 , 0 ~ _ _ ~ rte- , ~ ' F~~\ U~~~ r C " DETAIL 30.1E I J~ Q ~ ~ ~ fQ U w
0 N ~ ~ 1<T ~ • ~ / ~ , . W GRAVEL & RIP FILTER ERM BAST r ~ , S _ -t~ t , 7os 7~ ( V ~ ~ o0
T `r' ER DETAIL 30.12 ` i ~N N 0 ~ a SRO 0 ~z~
~T _ 'r i ~ ~ \ 1 ~ ~ _ - RE FABRId INLET TECTION ~ , TECTION ~ \ AREA WHERE FENCE AROUND ~ Vf ~ ~
E~ ~a. . Y ` \ ~ . r„ I - , r _ a + PE TAIL~i ON SHEET G TYP. ) AIRPORT TO BE REMOVED ~ Vf ~ ~ TYP. ~ ~ DURING CONSTRUCTION AND W ~ " > ~ - J 1 o ro ~
, . , , r ~ ~ ~ ~ ) ~ REPLACED ONCE FILL IS COMPLETE ~ ~ ~ o
, , ~ B N78•'" ~ 1• o ~ s, , 3 0
67 W 67 W ~ J) ; 7 1~1 ~ ~
~ ~ `i, ' ~ ~ 0 7~ ~0 5~' ~ 4 ~ RC a o TEMPORARY DIVERSION SWALE PER ~ o
/ _ 08 N I ~ / J D IL 30.05 TYPICAL SWALE TO ~ ~ Ga REMA AFTER CONSTRUCTION TO ~L
r ~ ~ ~ i , n J) IVERT WATER TO HW3. U)
C~ TD
~ ~ TE RARY R510 S ALf ~ ; Ra ! r ~ ONE, Plr '
I ~ C , 1 , ~ ~ R~ DET O.Q5 T ICAL r± ~A ~ SrOp' ( ~ ~ ~ '710. PRq ri PIT stop p~ 7oa NO SCALE
TI EAR Cry J
~ ~ ~ , J ~+16.6) ~ r _ ' CB3 is ~1~,~:, x.,~ ~ ,;'o,, U O N LEGEND o,-
~ ~
1 ~ 1 ~ ~ r I ~r I ~ ~ ~ ~ ~ M O RB 1 TEMPORARY RISER BASIN N
~ i ~ ~ X42 SF I i (i ~ ;(t2 SF i J PER DETAIL 30.01. ~
I t~ ~ 1 ~06! CU ` } - , , T.W. 710.00 y ~ TEMPORARY DIVERSION SWALE M
~ ~ . ~ 8.36,0 i ~ a TD ~ O 360 0 710 PER DETAIL 30.05.
t ~ ~ ~ ~ Ir ~ g i ~ ~ ~ ~ ql7 " ~ - RIP RAP OUTFACE PROTECTION ~ ~ In
' $ ' ~ _ ti - ~ -N W ~ PER DETAIL 20.55. ~ ~ ~ In
~ J~ T 1 F ` 55 050' S r
/ ~ ~ i , i ~ 1 PROP FF 711 ti ~ ~ ~ TEMPORARY SILT FENCE RETAINING ~ PER DETAIL 30.06. ~ ~
~ ~ ~ i ( r C B 2 ~ b' T ~ ! 24 T 0 WALL ~ "I"' a ~
~I 1 ~ STABILIZED CONSTRUCTION ENTRANCE d~CK ! ~ PER DETAIL 30.11. ~
TEMBORAR~Y SILT FENCE , J PER DETAIL 30.06 TYPICAL ~ ~ ~18A ~ .N N
1 / 1 _ ~ 1 -1 1~ ~ ~ i • ~ ~ #4690-15-0938 T P F P ERM ~ - r / 0 0 SLO E B Now or Formerly ~V~i? TSB PER DETAIL 20.50. U ~ ~
I q I r ,.City of Concord ~ d ~
~ ~ , l 9, ~ ~ ~ ~ ' V. Deed Book 4059 Page 299 WIRE FABRIC INLET PROTECTION ~ ~ 18 ® ~ o
B.D. 09.00 - - - / PER DETAIL ON SHEET GR-2 W ~ ~ ~ (n
4 ~ .y~ 53 461 F ~ , 1 W ~ ~ ~ (fil . Q ~ C o, TEMPORARY SILT FENCE ~ GRAVEL & RIP RAP FILTER BERM BASIN W ~y
I j 10.410 AC ~ ~ ~ ~ ~ i ` ~ PER DETAIL 30.06 TYPICAL PER DETAIL 30.12. L+••I O ~ ~
1 ~ ~ ~ ~ -0 10 d In J, TEMPORARY SLOPE DRAIN
t~ / TS~ PER DETAIL 30.04.
~ ~ ~ ~ r ) I ~ ~ f 3 ~ ~ ~ ~ ~Y , - - - - - - EXISTING CONTOURS
I + ~ 3+g ~ ~ t i ~r r 0.3 o~~ nTD 7 ~ i
co ~ j % 710 ~I 1 a V, PROPOSED CONTOURS / J b5
d'I I 9 ps. yi, ~ d n~ J. C7 ~ ~ S ~ ~ LIMITS OF CONSTRUCTION TYPICAL LC ( ) Qi H
rl / I
r 1 ~ , E ~ ~ - ST SOIL TYPE BOUNDARIES (TYPICAL) - I PACE ARTHEN BAFFLE WITH 20' WF~7 F..~
~ I 1 T H P NSURE PROPER MIXING OF SPOT ELEVATION MARKER O
J T.C.=TOP OF CURB OR(vIWA ER PER NCDWQ REQUIREM NTS. X T.C. ( } ~j
o ~ , . ~ ~ 3/4" Iron 1 ~ i r TD o° ~~Xg ~ ' ~ ~ o _ _ ---`~S E SHEEIf'PD-1 FOR DETAILS ~ E"~ SPOT ELEVATION MARKER 11 W
Pipe I I ~ r N - V T.W. (T.W.-TOP OF WALL)
~ ~ s j ~ J ~ • v ~ O !"y
~ 1,~, ~ ~ f 1y'' I I ( ' ,1 ~ d ` ~ o SPOT ELEVATION MARKER X B.D. (B.D.-BASE OF DOCK)
I TEMPORARY RISER BASI~J 2 I ps # N.~ $ 8 f~131 ~ A BOT.-688 `o PE MANENT DETENTION POND TO BE USED J'~ y
I 15" CMP BARREL &'18" PERFORATED MP RISER ~ 17 10 K~ ~ - s ~ ~ - II A A;•TEMPORARY RISER BASIN DURING S ~ •1 ~ ~
I ANCHOR RISER IN 1'-6x1'-6"xt'-0" DEEP S I ANTI-SEEP ~ d CONCRETE BLOCK. ~INS~ALL 4'-6" ~ 7 8 } 0 - CO STRUCTION. SEE DETAILS ON SHEET PD-1 S 0 A $
I COLLAR ON BARREL JFJST BELOW CENTERLINE OF' ~ y z ORMWATER ' 10' ~bNCRETE LINED EMERGENCY
I PEZ01D ~L ~ BERM. CONSTRUCT 8 WIDE TRA ~ y , S' ETEN110N'P ~ I SPILLWAY PER DETAILS ON SHEET PD-1 Q 1""I
I EMERGENCY SPfLLW~CY WITH 3:1 SIDES IN VIRGIN M L Y E W SOIL SEED ENTIR ` ASIN AND SPILLWAY UPON ~ „ B ~ 10 ER DETAILS ~y 10 EET PD-1 ~
I ~ - ~ s. 6 R, ~ ( COMPLETION OF E~ISTRUCTION. BOTTOM OF' \ 1, 6' y ~ K-: v W Rc ' ~ ~ W ~y
S ' ~ ~ BASIN=690, TOP,~bI= RISER=692, SPILUINAY ~ CB10 , y I _ _ ~ s I 22 W ES
~p ~ I INVERT-693 & ~ibP OF BERM-694 A ~ U E PER DETAIL 30. '1 TYPICAL 708. O /FUT E
. ~ y OVERHEA F
Q`" ; ~ ~ ~ ~ _ 1 I ~ 1 ~ ~ i r~ONNE~CTOR ~ ~ M~ w ~ ~ ` ~ y
Z ~ RB 2 ~ TEMPOR~tRY SILT FENCE t ~ ~ '294 SF .82 T. I % ~ i f V 1 INSTALL 18 RCP AN F F R RAINA
PER DEF~L 30.06 TYPICAL ~ S FLUM r d6 D ES 0 D GE w ~ UNTIL AIRPORT GRADING IS COMPLETE.
I r- ~y 1 ~ ~ I ~ ' WIRE FABRI LET ROTECTION ~ `PIPE AND FES CAN BE REMOVED UPON
708 08 I - ~ ~ FLUME 'y ,5 ~ PAR D ON HEE GR-2 TYP... B COMPLETION. ~ ~ T ~ ~ % ~ GENERAL NOTES: ~Ny
F~1 FUTURE ~ 1. BOUNDARY SURVEY INFORMATION PROVIDED BY PIEDMONT DESIGN ASSOCIATES, P.A., rr
- ~ S CB 2' FLUME / ti _ ~ ~ 0 T.C. / o ~ a ti V ~ ~ ENGINE 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING
_ _ ~ ; 06 705.84 DI1 , 2' FLUME / BUILDING ' 30,000 SF ' ' V 1 UTILITIES (SHOWN OR NOT SHOWN ON PLANS) PRIOR TO ANY GRADING ACTIVITIES.
/ - - _ C812 ~ T.C MoD ~ ANY CONFLICTS SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER. ~ 704
I DI17 50 g ~ - ~ - _ o i , y / / j 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. Z
1 g U~FER i - -t ~ ~ Drr - P 2.33 , ALO 3/4" Iron N~;'~- 1 ~0 s ~ ~ r~' ~ 4. ALL EROSION CONTR M A R T N NTI A I T R E Y ~ ~ , OL E SU ES MUS BE MAINTAI ED U L LL D S U B D
Pie i ~ ~ r. ~ 6 ~ 0 .7 T.C,,~' p /RES ~ c _ ~~EN TI ~ - _ o ~ , T.C. ' % ~ B ~ AREAS HAVE BEEN PERMANENTLY STABILIZED. ADDITIONAL MEASURES MAY BE
X89, i E c ~ , Ret~ar ~ ?2 Tp o i REQUIRED AS SITE CONDITIONS WARRANT. H T R- AN TIN AN TAI ' 5 SEE S EE S G 2 D GR-3 FOR EROSION CONTROL SPECIFICA O S D DE LS
I , ~ ~ , 6. ALL STORM INLETS SHALL BE PROTECTED BY WIRE FABRIC INLET PROTECTION
- - 3 37 8:39 . ~ \ 3~ W ~ i tc ~ 7 8 . ~ 4 Rebar ~ ~ d, 5 1 ra ~ 3 ~ ~ , ~ ' ~ - ~ AS PER DETAIL ON SHEET GR- .SEE SHEET GR- FOR STORM DRAIN DATA. ~ 2 2 tJ
_ i s tal CoB ~ #4680-95 4434 ~ ~ / b ~ 1" Iron Pie ~ ~ 73 a + C ~ FUTURE ~ ~ 702" I "L. , ti~ ; ' CONNECTOR ' , r; j ~ ~ 7. ALL STORM OUTLETS SHALL HAVE RIP RAP OUTFACE PROTECTION AS PER DETAIL 20.55. p ~
Now or Formerl S ' p 4 ' 75 Y # i ~ i ~ ~Y. ,,r 1 J ~y, r D ~ - 8. ALL FLARED E t'~TIONS SHALL BE PROTECTED AT THE TOP WITH TEMPORARY SILT _
~ Shwe U. & Christine M int _ ~ ~ ~ ~ Rebar ~ Deed Book 762 Page 153 - TEMPORA Y DIVERSION SWALE - ; FENCE P~$ DETAIL 30.06. _ ~ ~ ~ ' , f ' ~ TSB 9. PE ENT GROUNDCOVER MUST BE ESTABLISHED WITHIN THE PROPOSED DIVERSION = ~ 2
>~i3~$ -95=6471 ~ ~ ~ ~ ~ Rebar Lit #1 `Bethany Woods Subdivision j , , 4 ' ~ ' ~ v! ~ PER DET IL 30.05 TYPICAL 5.24 4' / ALES. ADDITIONAL MECHANICAL MEASURES MAY BE REQUIRED IF THE VEGETATIVE ~ Z ,
Plat Book 20 Pa e 7 t N'dw Forrrierly ' g ~ 4690-95-9309 ~ ~'1 Shwe & Christi ih~~ ~ ~ ~ m U e, y , S8821 E
_ ~ Now or Formerl Deed Oobk 762 e 153 ! Y ~ r . 9 ivi ion' Shwe U. & Christine Myint K JJ , v g~COVER CANNOT BE ESTABLISHED AS PROPOSED. ' "`~~r1P~~` 0 J
Lot #2 Bethan ods Subd ~ - i ~ ~ ~ ~ TOP OF SLOPE BERM ~ ~ 'PER DETAIL 20.50
Plat B Page 7 Deed Book 762 Page 153 P ; ~ Lot #3 Bethany Woods Subdivision + 6 I ' L • ~ ~ ~
Plat Book 20 Pa e 7 #4690-05-0348 TO BE D,E~uIISED T c 9 Now or Formerly - d7 T F BED ISED TO' REVISIONS E CITY OF C014COR6 ~ i ~
\\Shwe U. & Christine M 'nt THE CI Y 0 CON ~ N PR1,0k TO SUBDIVI _ / AENSFD SR7RY MID '10~ TO SUBDIVfSION ~ ~ r•~, f' ! aFARn+c PER 97E PIrW JMY
Deed Book 762 Page 153 - / d Lot #4 Bethon Woods Subdivision ~ 5 0 RE ~ ~ ~~I ; ~ A a~ces,z/ao/a'; / ~ ~ snxa+ DRUN ~
~ ~ Plat Bo k Pa e' 7 ~ N /PAR ING j FUTURE ; 0 20 9 I ~ j- ~ ~ ~ 30,000 S.F. FUTURE ~ r Pao PFR NCDYIO AND JMY / /
io ~ _ . N 0 :HANGER 30,©00 S.F. i / B RYAN nlc. 1 4/04 ' ~ i u ~ HANGER
ri I / F.F.=705. ~ N ~ F.F.=705.00 ! j _ F TURE R! PER CdMMENTS ~ ~ p TA I-WAY ~ C` 2 ~ JMY
v / o ~t- ~ f o ~ ~ p i ~
~ ~ - _ ~ ~ I ~ ~ ~ ~ i N
N _ ~ ~ ~i r ~ ~ _ TEMPORARY SLOPE DRAIN ~ j (n" ~ ~ 167,71 SF
~ _ PER DETAIL 30.04 TYPICAL ~ ~ I ti . _ ~ ,3.838 'AC 167;71 SF ? , TEMP RARY RISER BASIN #1 ' r 12" ~eMP BARREL & 18" PERFORATED CMP RISER ,3.838.%AC ~
11]r Y ane _ - _ f , ~ ? 1~ I ~ ANCHOR RISER IN 1'-6"x1'-6"x1'-0" DEEP
W 6 - 0 CO CRETE BLOCK. INSTALL 4'-0" ANTI-SEEP j ~ ' 704 I 7021 CO LAR ON BARREL JUST BELOW CENTERLINE OF
f rn _ a _ _ ~ r ~ - Re .Y Rg#1 ~ U, B M. CONSTRUCT 8' WIDE TRAPEZOIDAL
- „ - CD v 10,463 SF J E,~ERGENCY SPILLWAY WITH 3:1 SIDES IN VIRGIN Date: 12~09~03 ' SOIL. SEED ENTIRE BASIN AND SPILLWAY UPON
v7 I u7 _ _ _ ~ I 1 ; OMPLETION OF CONSTRUCTION. BOTTOM OF ' J633 ~ _ Scale:l~ 60 Hor.
z ' _ L ASIN 672, TOP OF RISER-674, SPILLWAY 2 CONTOURS
a N r-- _ _ c~ ~ - I TI"B NVERT=675 & TOP OF BERM=676 AS Cat PER DETAIL 30.01 TYPICAL Drawn:
' ~~r ~ RFF'AR~ YAII nIG I
U \ c I _ t CALL 1-800-63214949 Checked: DLIVI
co - O 1. N.C. ONE-CALL CENTER IT'S THE LAW 1 Job: 03-07-06
o \ Concrete
c P ! 4 Rebar' 2 i ` - 310.0019°41 58»E Monument Sheet i
c) V) f N r i 24'8 89, c 1° Iron 1" Iron #5 eb Ea
0 Lot #5 Pipe ORAR FE Pie 589'41 56 W ['77p P ,DET
o Bethany Woods Subdivision 11 Plat Book 20 Pa e 7 1 1 2" Iron 4 "54!39 d 9 I /8 AIL 30.0 YPICAL Tle Line 44589-97- 472 i e 200C 2/09/04
I Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: 0 3 Sheet
o J
U

CONSTRUCTION SPECIFICATIONS
1 TRASH RACK 1. Site preparations -Clear, grub and strip topsoil from areas under the y
1 f ,y4 REBAR embankment to remove trees, vegetation, roots and other objectionable J
TOP OF RISER material. To facilitate sediment cleonout and restoration, clear the pool area of ap
all brush, trees, and other objectionable materials. Stockpile all topsoil or soil M"'+ ~ Q t` containing organic matter for use on the outer shell of the embankment to ~ ~
facilitate vegetative establishment. ~ ~
2. Cut-off trench - Excavate a cut-off trench along the centerline of the earth fill Q'° ~ ~
PERMANENT PRE-CAST CONCRETE DROP BOX TOP VIE TOP VIEW ~ 4AREBARCK embankment. Cut the trench to stable soil material, but in no case make it less ~
TO f3E ANCHORED IN CONCRETE TO PREVENT TRASH f FLOATATION. SEE CHART FOR SIZES. TRASH RACK ~ than 2 ft. deep. The cut-off trench must extend into both abutments to at least , W ~ the elevation of the riser crest. Make the minimum bottom width wide enough nn11 `n' ~
TOP OI TOP OF RISER 'H' PRE-CAST CONCRETE BOX t0 ermit 0 erOtion Of x V i n n W ~ ~ I ro BE PLACED AFTER coNSTRUCPON. P P e ca ato a d compaction egwpment but in no case less ~ ~ ~
'ICE TO BE ANCHOR IN coNC. ro PREVENT than 2 ft. Make side slopes of the trench no steeper than 1:1. Compaction ~ ~ U 0.
MAXIMUM SEDIMENT STORAGE LEVEL ~ ~ DRAW DOWN ORIFICE TO BE 6 BELOW DRAW DOWN ORIFlCE INTAKE j p5 WASHED STONE FILTER COVER ANGLED ROMINORMAL POOL Ar A as. I I FLOATATION. requirements are the same as those for the embonkment. Keep the trench dry y ~ IMAL POOL I I during backfilling and compaction operations. ~ ~ ~
{~5 WASHED STONE FLTER COVER I OVER DRAIN PIPE, 12' MIN. THICKNESS ELEV. TO INTAKE 1' BELOW OVER DRAIN TILE, 18' MIN. THICKNESS t' BELOW ~ ~
I NORMAL POOL ELEVATION. 20' ELEVATION. O U Z r\ I I PERMANENT PRE-CAST CONCRETE DROP BOx 3. Embankment -All fill material should be clean mineral soil, free of roots, woody ~ TO BE ANCHORED IN CONCRETE TO PREVENT vegetation, locks, and other objectionable material. Scarify areas on which fill ~ 'b a~ ~
I 00000000000000000 0000 ooj i~ z oo - I I ~ FLOATATION. sEE CHART FoR slzES. is to be laced before lacin fill. The fill materi ~ a~= ~ I I P P 9 al must contain sufficient ~p
oj U ~ o000 12~~ 12 I I moisture so it can be formed by hand into a ball without crumbling. If water
0 0000000000000000000000 0 j ~ BARREL can be squeezed out of the ball, it is too wet for proper compaction. Place fill y ~ 0 I I BorroM DRAIN vALVE sTEM material in 6 to 8-inch continuous layers over the entire length of the fill area 0 r
~ ~ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 SUPPORT BRACKETS AS REO'D. ~ 0 r and then compact it. Compaction may be obtained by routing the construction ~ ~
000 000 i I Q i': _ ~ I I hauling equipment over the fill so that the entire surface of each layer is F~1 p ~ 0 traversed by at least one wheel or tread track of the heavy equipment, or a 0
U >~.I 20 LF "K° DIA. PERFORATED DRAIN PIPE w W ( I compactor may be used. Construct the embonkment to an elevation 10~ p„
c-K - ~ GROUT BOTTOM DRAIN ~ s i DRAIN I I( higher than the design height to allow for settling, Subgrode and fill to be verified
20 LF "K" DIA. PERFORATED DRAIN PIPE 36' MIN. AS REQ'D TO PROVIDE A CONCRETE ANTI-FLOTATION BLOCK WATER TIGHT CONNEC110N. )VIDE A ) and tested by Geotechnicol Engineer. V1 EC110N. ) BARREL
SEE CHART FOR SIZING & VOLUME. I' 4. Conduit spillways -All conduit materials shall be as called for on the plans
sECT/ONA-A CONSTRUC110N NOTES: _ _ _ J (Schedule 40 PVC may be used for sizes < 12" diameter). ;AVATF I'•` Securely attach the riser to the barrel or barrel stub to make a
CONTRACTOR TO INSTALL PERMANENT BARREL, DROP BOX WITH ov>=R-ExcnvATE ANTI-FLOTATION, DRAW DOWN ORIFlCE, TRASH RACK AND EMERGENCY r DEEP FDR ' FoR s) watertight structural connection. Secure all connections between barrel
SPILLWAY AS PART OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. SILT STORAGE )RAGE INSERT PERMANENT RCP BARREL I' ' . Wiz.; sections by approved watertight assemblies. Place the barrel and riser on a ~L• INTO PRE-cast coNCRETE RISER. firm, smooth foundation of impervious soil. Do not use pervious material such V N
INSTALL PERFORATED DRAIN PIPE AND STONE FlLTER. ONCE ALL 'K' PVC BOTTOM DRAIN W1TI DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE 'K' GAT>: vALVE & sHUr-oFl C BOTTOM DRAIN WITH INVERT IN OF BARREL =BOTTOM OF POND r E vALVE & sFlur-oFF as sand, grovel, or crushed stone as backlill around the pipe or anti-seep
ALL SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT coNCRErE ANTI-FLOrA~oN BLOCK collars. Place the fill material around the pipe spillway in 4-inch layers and H sEE CHART FoR slzlNC ~ voLUME. compact it under and around the pipe to at least the same density as the ~ N
BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. ' adjacent embonkment. Care must be taken not to raise the pipe from firm ~ ~
contact with its foundation when compacting under the pipe haunches.
. M NOT TO SCALE ~ ~ O Place a minimum depth of 2 ft. of hand-compacted backfill over the pipe .+.r
NOT TO SCALE r spillway before crossing it with construction equipment. Anchor the riser in U] 0
I place by concrete or other satisfactory means to prevent flotation. In no case ~ „ Ln
DESIGN DATA g 0 ors o or should the i e conduit be installed b cuttin a trench throw h the dam after ~ SIGN DATA SUMMARY POND 1 PP Y 9 9 ~ 0 orl o on lev. the embankment is complete. (n
'B' NorMal Pool Ell NorMal Pool Elevatlon 696.00 ~ N
'C' Top of Riser w~rEA . . D Spillway Inveri 5. Emer enc s illwa -Install the emer enc s illwa in undisturbed soil. The -C Z Top of Riser 700,10 g y p y g y p y ~ ~ Spillway Invert Elev. 706,00 achievement of planned elevations, grade, design width, and entrance and exit C
~Qw Spillway Width a~ ~ Spillway Width [feet] 10 channel slopes are critical to the successful operation of the emergency ~ w
'E' Top of BerM E Top of BerM Elevatlon 708,00 spillway.
'F' Barrel Length 'G' Barrel Slze [In Barrel Length [feet] 80' s N Barrel Slze [Inches] 18' RCP 6. Inlets - Dischar a water into the basin in a manner to revent erosion. Use ~ - s- g P ~ U ~ O
'H' Drop Box Slze Drop Box Slze [feet] i?'x3'x12,10' diversions with outlet protection to divert sediment-laden water to the upper ~ p Q (p
'I' Draw Down Drll 'J' Intake Elev, Draw Down Orifice [Inches] 3' end of the pool area to improve basin trap efficiency. ~ (n [ntake Elev, 695,00 ~ 0
'K' Bottor~ Drain ; ~i Bottorl Drain Slze [Inches] 6 7. Erosion control -Construct the structure so that the disturbed area is minimized. W ~ ~
'L' Antl-flotation Anti-flotation Anti-flotation Block Dln. 6'-0'x4'-0'x3'-6' Divert surface water awa from bare ar as. m I h m nkm n f r ~ ~ ~ C y e Co p ete t e e bo e t be o e Anti-flotation Block Vol, 2.98 CY MINIMUM the area is cleared. Stabilize the emer enc s illwa embankment and all other ~ N~ C
'M' Antl-Seep Colll Anti-Seep Collar Size 4-6'x4-6' disturbed areas above the crest of the 9 rinc aP s illwa immediate) after W P P P Y Y W
2 Year Peaty Pre-Deveb B Year Peak Elev. & Discharge [cfs] 700,08 & 0,47 construction . ~ - - 41.68 ) Pre Developed Run Off [cfs]
Post-Deve Post-Developed Run-Off [cfs] 67,25 8. Safety -Detention basins may attract children and can be dangerous. Avoid
10 Year Peak Pre-Deveb l0 Year Peak Elev. & Discharge [cfs] 700.77 6 18,47 steep side slopes, and fence and mark basins with warning signs if trespassing Pre-Developed Run-Off [cfs] 74,08 is likely. Follow all state and local requirements.
Post-Deve Post Developed Run Off [cfs] 117,60
ear ea Z5 Year Peak Elev, & Discharge [cfs] 701,66 & 31,28
Pre-Deveb Post-Deve Pre-Developed Run-Off [cfs] 92,64 Post-Developed Run-Off [cfs] 146,30 ANNUAL INSPECTION MAINTENANCE PROCEDURES
50 Year Peaty 50 Year Peak Elev, & Discharge [cfs] 702,43 & 32.20 ~
Pre-Deveb Post-Deve Pre-Developed Run-Off [cfs] 106,52 M""~ Post-Developed Run-I]ff [cfs] 167,74 I. Annual Ins ection: Annual ins ections shall be scheduled b Cit of Concord and
B B 100 Year Peak l00 Year Peak Elev, & Discharge [cfs] 702,95 6 3^c,80 p P Y Y
Pre-Deveb Post-Deve Pre-Developed Run-Off [cfs] 115,75 Owner to be performed on the first of June each year. Post-Develo ed Run-Off [cfs] 181,99
II. Inspection Activities:
CATTAIL I H W CATTAIL (Typha Latifolia), 1 Gallon Size o) Testing of the emergency drain pipe valve.
b) Visual inspection of drowdown orifice. 1~ H
PICKEREL c) Visual inspection of the trash rack at the intake orifice. H ~y E PICKERELWEED Pontederia Cordata), 1 Gallon Size W ( d) Visual inspection of the emergency spillway. T ~
V e) Visual inspection of the pond rim and slopes. Qj A
s~w,~r~~v,~w BLUE-FLT ' f) Measurement of the wet pond depth at the dam end of the BLUE-FLAG IRIS (Scirpus Validus), 1 Gallon Size detention pond (Distance from permanent pond drowdown orifice
NOT TO SCALE EDGE OF POND invert to bottom of basin . A
~ 8'_~" **-SPILLWAY MAY BE - - - - - g) Visual inspection of all stormwoter structures on the served site ~ yF~ I~ I
ARIE VARIES VEGETATED INSTEAD ARIE "D' (MIN) ARIE (MIN) Nua feeding the detention pond. NO ~ h) Visual inspection of the total site drainage basin for adequate '..,y
~ PAVED IF ground cover to stabilize site. U
pp CONSTRUCTED _ _ - _ TOP OF BERM EL. ="E• T~ ~L.E4. - J W i) Visual inspection of upstream (off-site) areas feeding into the site W "•°i of draina a basin for otential off-site sedimentation sources.
ENIIRELY IN CUT. = D VARIES SPILLWAY INV,= "D" Nom 9 P ~y
a SPILLWAY INV. ~ o III. Maintenance activities shall be performed as follows: Q
~ z~ I- ~ ~~a - ~ Nab ~ 1. After every significant runoff producing rainfall event and at least monthly.
Eb.- ~ SPILLWAY NEIR UNING~ o ,.a w a. Inspect the wet detention basin system for sediment accumulation, erosion, trash
~ ~9, ~ 3r~p5T H accumulation, ve etated cover, and eneral condition. ~1 ~ ~ a 9 9 `V
w/ to~to,~to/to wwM. 4' O.C. 4' O.C. Nom W TvPICaL rvPlcaL b. Check and clear the orifice of any obstructions such that drowdown of the temporary
UND ED EDGE OF LITTORAL SHELF ool occurs within 2 to 5 da as desi ned. P Ys 9
sp~w~r sECr~t~v~-~ _ s~~w~r sECrwivB~ 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
CLASS II RIP RAP OUTFACE PROTECTION. r mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
NOT TO SCALE MIN. THICKNESS= 12', LENGTH=6'. NOT TO SCALE NOT It7 .SALE
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, Tiptop, etc.} quarterly to maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when
Y. -T----- I depth is reduced to 75% of the original design depth (see table below). Removed sediment ~ - -~-r--_~--~-~-~--_-~-- ~ shall be disposed of in an appropriate manner and shall be handled in a manner that will
1 ~ I _ I,, _ I ~ I i _ , _ ~ _ i i i _ _ ~ _ I I _ _ _ _ - - - - - ' - - - - - - not adversely impact water quality (i. e. stockpiling near a wet detention basin or stream,
I 'I ~ ~ ~ ~ ~ 1_ i 1,~1V I ~ _ _ _ _ - - I_ _ ~ _ I _ - I_ _ L _ i ~ ~ ~V6-1,X11/k7PL/NE-dI~PR/,l//IRY.A°~LW.4Y _ _ _ _ L _ _ , _ etc.). I ~ I
i i ~ ~ , _ i_ I I I r f. l-- _ _ _ _ ~ _ . ! - - - - , The measuring device used to determine the sediment elevation shall be such that It well i~
~ I L ~ MM i ' _ ive on accurate de th readin and not reodil enetrate into accumulated sediments. ~`'~III d _ _ l _ _ _ 9 P 9 YP ,
-t~-~ ~ i --1------~____-~~__~-__~ ~ 3~--,-- I - -I----- h---- ~ ~ f--_____-_--_- - , ~ , v i ~ I , i ~ \aP ,N -j------' --------'----=------I------- When the permanent pool depth reads 3 feet in the main pond, the sediment shall be ; F ~0 ;
_ _ - I I I ~ I j x i _I _ ~ _ _ - _ ! removed. ~ , -
I i ~ ~ i ~ I ~ 1 ~ _I _ _ i I ~ _ = - - - I ? ( - ; - ~ - ! When the permanent pool depth rends 3 feet in the forebay, the sediment shall be z
> 10 f~IN. ~ ~ t i I ! removed. ~ , I f..._ - .
( ~ I i ~ 1 _ -I I ~ ~ ~ ~ I I I , { ` I i ~ ~ ~ r I ~ ',,0 ~;'~1' c I ~ I I ~ b ~ 4 - - ~ ~ --T - I - - I 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin P
j I ~ _ i _ ~ _ _ I . _ _ . I__ _ _ _ _ f ; _ t - - ;,I' DIA. SCH. 40 PVC G ~ WEIR SPILLWAY - ~ I WEIR SPItII.WAY ~ ! I surface. These )ants shall be encoura ed to row olon the ve etated shelf and foreba ~ _ ~_______rt___~_~_-_~__-~_-~ P 9 9 9 9 Y
a ( ~ ~ I i INV. E~.= D ~ ~ _ DRAW- OWN~ORIFlCE. I - - U a_c,.-_-_-.-._ _I I berm. ~~r~ U _ 1 _
} { I i ~ -I t I o---_ I ~ i ~ I ~ " " ~ 'INV. ~ B " ~ I ~ ._.-INTAKE ~EL.=_ J" _ I n o I I 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of ~ _ _ _
c "E" ~ ~ _ _ I i _ _ TOP OF_~ERM EL E E t_._ w. i ~ ~ li i ~ ~ ~ i ~ ~ , i I , i _ _ L ~ _ ~ I i I ~ sediment through the emergency drain shall be minimized to the maximum extent practical. REVISIONS , ~ I
~ I _ I - ~ ~ ( I ~ , ~ I ~ I i ~ ~ I ~ n ~ ~ ~ I._ ~ _O ~ w r m REVISEn PFR COMMENTS o W N , % _ I 7. All components of the wet detention basin system shall be maintained m good o k g BY NCDwO _ _ _ _ _ ~ F- ~ ' ~ ~ ~ i I order. A 2/0004
o ~ ~ _ _ , 1 ~ , _ r ~ I Y ~ i ~ ~ ~ 1 ~ ~ 1 ~ ' ~ ~ ~ _ JMY
~ 4--.__ X ~4.JMIN~__ - -----1_-_--~---- - ' ----a - -'~NIN~---j- _ i --1-- 1C i , ~ ~I T I - I ~ _ ~ ~ ?t - - _ . f _ _I
~ I ~ f ~ , y _ 20,lWEIR-FOR FL_ _FROM BAFFLE MNN' POND TYP._(ELEV.-"B' _ ~ ~ _ o ~ _ _ ~ j i ' ' I ' ~ * ~ I I I_._ E____-.__ 1 I I I R _y _ 4--- i _ _ ~ _ . _ - 1
- - _ _ _ - , ~ ~ ~~6:1 MAX. SLOP FOR LITTORALSHELF ! _ _ _ ~ _ _ ~ _ j_ _ _ . _ 1 _ a__ 1 _ _ ._-I I ~ $ ~ _ I _
1 _ ~ ~ _ _ _ _ : _ _ ~ I i i I I " s~ ~ Tn ~ ~ I EL. e ~ _ ! ~ _
~ ! ;I I ! ~ NORMAL POOL = B _ ~ _ _ ( ~ NOR ALP EL.= . B ~ ~ f I ~ I I ! I I
I I ~ ' I ~ t ~ i BOTTOM BA ! ~ ~ - - I I GENERAL NOTES:
cv I ! _ ~ _ _ _ ~ _ _ _ _ _ I _ ~ EL:= 69.0 ~ - ~ t
_ _ , 3 _ _ L _.LF_{ G - ~ - ALL BMP FILL EMBANKMENTS SHALL BE COMPACTED TO 95% STANDARD PROCTOR. EL- A I
~ ~ ' ~ - "A" I I _ ~ i l ~ ~ BOTTOM P EL=`'A' , I ! OTT~I POOL _ I wip to` ~ ~ 41tlM s10' I ~ r ' ~ I ; I I I ! I I I BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION.
d I _ _ _ I ~ 1_ _ ! _ . _ _ _ _ ~ I _ _ _ _ - ~ I j L ~ _ j I I ~ PROPOSED GROVDE i I I I _ ~ _ I
3 ~ _ - - _ I j I -~+---r--~- - - I I ~ Date:12~09~03
' ! ~ I PROP~SED GRADE iLITTORAL SHEI}~tt --TO BE PLANTED ' i ~ j i ~ _ t _ , _ ~ _ _ ~
~ i IW1TH ACCEPTABLE AQUATIC P NT 1 ~ f ~ ~ i I I ~ -?SPECIES- AS-SHOWN IN PUNTING DET. I I i. I I_ , I I 1 1 r Q ~ j C ! I I i ~ , Scale.
z i i ~ l I ~ j__ _ _ _ I _ _ _ ~ "L' PERMANEN _CONCRi:TE_ANtCHOR NA NtCHOB _ _ _ _ I _ _ - _ - _ I-_. _ - ! j Drawn:
i ! _ ~ _ _ _ _ ~ , ~ I I _ ~ _ ~ i _ _ I _ ~ _ _ ! - } _ _ ~ I i ' ~ I i I I I I--- . _ _ _ ~ 1 _ JMY I 1 I I
C) ~ i I i i I ~ Checked: DLM
w r- - - r r - - i - "M"xV-6" T} "M'W-6" THI
C C. ANTI-SEEP ° I Job: 03-07-06 C. ANTI-SEEPOl1ARS -
ce)
ALL CONNECTION. TO INLET B X MUST BI o _ WAR 7V QT ME XW OF PRAM, Y_.SP/LLIYAY NQ~'" P1 A I t 1 SEALED WATERTIGHT. B X MUST BE j Sheet 1 I 1 BEFORE YOU DIG J
i i CALL 1-800-632-4949
N.C. ONE-CALL CENTER PD- I ITS TH E LAW I
a. a- Location: PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN A20904
PR-20 T DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: o Sheets
J
U

~ - ~vu ~ -
- _ ~ D , .1.r, "tom / ~ _ A V ,
, C~~ , rl ; , ,Y , E ~ ~ / 1 ~ ~ i
, , ` \ , MT ' ~
_ ~ ~ ~ ~ ~ ~ y _ ~E ~O r h
~ ~ ~ _ 1 J.~ l 1 ~ ~ r;%"1 U1
~ _ cn FEB 13 2004 r a
~ 1 ~ ~ ~ \ J) N ~ ~ 4 ~ ~N..
"I ~ / 1 710 J m ~~Tlq~ o ~n
" 71 C ; 708..... JZ ~ ~ ~ ~ 0J N o
J~ ~ ~ ~
3 ~ ~ R,q ~ ~ ~ r:: ; ~ ~ ~ f ~ - . ~ ~ , ~ _ _ STAB CONSTR ION EN~RA 708 ' F ~ ~ ~ ~ ~ = ~ ,r ~ _~i , ~ ~ , ; ~ h'(?6 " DETAIL 30.11. / - 8 W 3~ Q p ~ ~;Uw Op r?r N
I ~ ~ ' ~ ~ GRAVEL & RIP FILTER ERM BAST ~ ~ ~ ~ ` ~ 706 ER DETAIL 30.1.2 7~ ~ U ~ ~ 0
~ - , 'i ~ eq ~ ' . ~ _ ~ ~ ~ v ~ r - a .~+n ~ - J~ a TRO 0 ~z~
- ~ i ~ , R~ ~ RE FABRICS INLET' TECTION ' CTION ~ ! ~ AREA WHERE FENCE AROUND ~Q to
s. ' Y~ ~ ~ ~ _ a + PE TAIL' ON SHEET G TYP. < i ~ AIRPORT TO BE REMOVED Vl ~ T~• ` DURING CONSTRUCTION AND W v " > ~
_ , . V . ~ G _ , ~ ~ o ~ ~ ~ 1 t REPLACED ONCE FILL IS COMPLETE ~ ~ 0
a N1 I S7 ' + ~o..
~ ` ' W 67 W Jy ~ ~ a~ 7 ~ ~
, r ~ 1 0 4„ a TEMPORARY DIVERSION SWALE PER ~ 0
• ~ ~ ~ ~ p~~ i 7 ~ DEVIL 30.05 TYPICAL SWALE TO ~ '0 REMAIN AFTER CONSTRUCTION TO ~ rL
f' ~ ~ ~R' i i ' 1 J ~ a C ) IVERT WATER TO HW3. to
~ ~ r ~ ~ J h B -f ~ ~ TD
~ _ IS, 1~ ~ r I ' ~ TE RARY R~10 SALE ~ j - R° ~ I ~ / ONC pl ~y r srop'
~ ~ ~ ``f~ R DET 0.05 T KCAL n'~ OA ~ ~ ?glop' j n 710 ' _ _ PRA j~ E PRa TI Toe NO SCALE
! 1~ 1 ~ ~ r.r ~ z c~ac- , r+~ ~ EAR ~ ~ ~ .V,I L ~ /
~ , s.s~ - .,,st~~,l . ~ o N LEGEND o,-
f ~ 1 ~ , j A ~ `"1 ` ~ 1 R~ ; s~
F- \ RB 1 TEMPORARY RISER BASIN N V # ~ .
~ I n n ' ~ 42 SF ~1 ~ c~ i„~ ,,i ~ PER DETAIL 30.01. ~ `t J l ,y'~ V 1
~ ~ t ~r T j ~ ~ ~ _ ~ _ T.W. 710.00 _ y ~ ~ TD TEMPORARY DIVERSION SWALE ~ o
~ ; ~ _ ~ ~ ~ ~ ~ 18.36,0 60 0 710 PER DETAIL 30.05. ~
~ ~ ~ g } , e RIP RAP OUTFACE PROTEC110N ~ In ~
i ~ g ~ PER DETAIL 20.55. ~ ~ ~ In
u ~ ~ ' i ~ ~ T ' 155,b50 SF , t T MP RARY I T F NCE
r PROP FF 711 ;s A E 0 S L E L Z N ~ RETAINING ~ PER DETAIL 30.06. ~
1 ~ , ~ ~ ; ~ ; I r C B~ ~ ~ ~ s T i 24 ~ 1 0 WALL ~ T P-I C
I ~ C? O STABILIZED CONSTRUCTION ENTRANCE DOCK ~ J PER DETAIL 30.11. ~
TEMPORARY,SILT FENCE I 1 ~ j PER DETAIL 30.06 TYPICAL ~ r ~ ~ RIBA y ~ #4690-15-0938 ~ -
~ , r ~ ~ ~ ( ~ ~ I ~ / TOP OF SLOPE BERM ~ i ~ Now or Formerly TSB pER DETAIL 20.50. ~ ~ _ ~
j r~ j - r L4 `r A n i .City of Concord O d ~ ~ % V. ~
r,~- i _ Y ~ ~ T ~ ~t V Deed Book 4059 Page 299 WIRE FABRIC INLET PROTECTION ~ C
V j r ~ ~ i ,U ~ r~ B.D. 709.00 - - / PER DETAIL ON SHEET GR-2 W ~ ~ ~ (n C
453461 F i ~ r ~ ~ - ~ ~ ~ i r r1's ° o / IN Q ~ C / TEMPORARY SILT FENCE ~ GRAVEL & RIP RAP FILTER BERM BAS W
: , ~ ~ I 10.410 AC O' PER pETAIL 30.06 TYPICAL PER DETAIL 30.12. F~+~-I ~ ~ ~
,i~ i ~ 1<! a ~ J , TEMPORARY SLOPE DRAIN
r i ° ~ ~ ~ r ~ i ~ ~ - I ~ y } ~ TS~ PER DETAIL 30.04.
r ~ , J+ Cb 'I / - - - - - EXISTING CONTOURS
~~r7 "'1 f` ~Q 3 ~ I p n TD 7 710 ~ I
i ~ o . ; ~ 9 ps. { PROPOSED CONTOURS J bS ~ S
~ ~ ; a ~ LC ~ LIMITS OF CONSTRUCTION (TYPICAL) a
~I , -
~ ~ ~ / oo f ~ ~ ST SOIL TYPE BOUNDARIES (TYPICAL) a - ~ ' r PACE ARTHEN BAFFLE WITH 20' ~ F...~
~ i` ~ y / ~ 1 ~ T HF,LP NSURE PROPER MIXING OF SPOT ELEVATION MARKER O J ~
' ~ ~ - r~ C-~ 2 ~ ~ X T.C.=TOP OF CURB _ OR>vIWA1'ER PER NCDWQ REQUIREM NTS. T.C. ( ) ..I
\ a 1' LU ~~j,~py ~ ~ ~ ~ 0 9v a6 pro 3 4" Iron 1 I ~ TD oo ~ ~ r ,f S E SHEE~f 'PD-1 FOR DETAILS M~1 I ~ P T VATI MARK R S 0 ELE ON E TT`` w / - V
Pipe I i P T,yy, (T.W.-TOP OF WALL) Zj
~ , ~ 1 ~ ~ ~ Q H v ~ SPOT ELEVATION MARKER ~~yy
I ~ o - W r X g•p• (B.D.-BASE OF DOCK) f~131 ~ A
I i 1 ~a s d' , 1, p i I TEMPORARY RISER BASIN #2 I i ; ~G B' ~ _ co PE M DETENTION POND TO BE USED J'd F~
I 15" CMP BARREL &'18" PERFORATED ~MP RISER < ~ 17ps 10 y ~ ~ ~ ~ ~ d ~ II MPORARY RISER BASIN DURING S ICI ~ CO STRUC110N. SEE DETAILS ON SHEET PD-1
I ANCHOR RISER IN 1'-6x1'-6"x1'-0" DEEP ~ ~ ~ S S O A Iii
I to 4'-6" ANTI-SEEP 7 d CONCRETE BLOCK. INS LL I COLLAR ON BARREL JUST BELOW CENTERLINE 0~' ' 1~ ~ , ORMWATER I" 10' ~OIVCRETE LINED EMERGENCY
I BERM. CONSTRUCT 8' WIDE TRAPEZOIDAL y r ETENTION "P ~ SPIL!LWAY PER DETAILS ON SHEET PD-1 Q (H ;:;t ER -DETAILS N ~l
I EMERGENCY SPILLWl~Y WITH 3:1 SIDES IN VIRGIN M L Y E W 10 10 EET PD-1 F+~~! V 6„ y v W
I SOIL SEED ENTIREj~BASIN AND SPILLWAY UPON i s ; 6„ RCp ~ I COMPI;ETION OF Cb3JSTRUCTION: BOTTOM OF ~ S , RC ' ~ w ~y 22 W
O ~ BASIN=690, TOP°~~' RISER=692, SPILLWAY ~ CB10 y ES 0
I INVERT=693 & Tbp OF BERM=694 A~ ) ' r S , ~_`s `~I, 1 E U E ~ ~ O I PER DETAIL 30.Q1 TYPICAL 708, q K ~FUT E ~ u
I 1 ~ , OVERHEA F ..,~ONt~~CTOR ~ ~"I
I ~ ~ I ~r:~ . s. 1 O c~.., ~ ; I ~ ~ I ~ ~ ' ~ ~ I ~ M..~ w ~ `
; Z RB 2 ~`-1 ' , TEMPORARY 51LT FENCE _ 6.82 T. I ! _ , ;294 SF FLUM i ~ ~ j ~ ILi V 1 r ~ ~ JB INSTALL 18 RCP AND FES FOR DRAINAGE w
f S PER DETA L 30.06 TYPICAL ~ ~ ~ L ~ ~ i i ~ UNTIL AIRPORT GRADING IS COMPLETE. I"I
I 1 r ~ WIRE FABRI LET~4'ROTECTION ~ PIPE AND FES CAN BE REMOVED UPON ~ PER D L ON HEET GR-2 TYP. B COMPLETION,
I ~ ~ ~ 708 0 I in ~ ~ 'FLUME ~ GENERAL NOTES: N~y
F~ FUTURE I ' 1. NARY RV Y INF I I N A CIA P.A..
~ - _ _ S CB1 2' FLUME ~ ~ - ` _ ~ i t Q 0. T.C. i o ti BOU D SU E ORMAT ON PROVIDED BY PIEDMONT DES G SSO TES, ~ ~ ENGINE ~ 6 I 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING U LDING
_ _ __Y ~ 705.84 D11 _ ~ ~ 2' FLUME ' 30000 F ~ ~ V UTILITIES (SHOWN OR NOT SHOWN ON PLANS) PRIOR TO ANY GRADING ACTIVITIES. s oD '
r / _ _ _ CB12 LC' I DI17 / ~ ~ ANY CONFLICTS SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER.
- t r, 50 o ~ 704 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. ti ~ ,~i i
~ BUFF t ' ~ , D~ P 92,3 ER q , 4„ Iron ~ 3 ~ LONE ; _ _ 3/ _ ~ ~ ' C'Li ~ 4. ALL EROSION CONTROL MEASURES MUST BE MAINTAINED UNTIL ALL DISTURBED M.y G, 5 i r!-
S ~ ~ 6 ~ 0 .7 T.C.' Pipe ~RES ~ ~ ~ ~DENn ~ T o 4 A ~ ~c o _ _ ',C, ' ~ ~ ~B ~ AREAS HAVE BEEN PERMANENTLY STABILIZED. ADDITIONAL MEASURES MAY BE F~ / - REQUIRED AS SITE CONDITIONS WARRANT.
# X89. E o - , Rebar / ~ 2 i LC .,r,~ TD ' - - _ ~ ~ ; 5. SEE SHEETS GR-2 AND GR-3 FOR EROSION CONTROL SPECIFICATIONS AND DETAILS.
t" ~ S LC T ~ ~ ~ LQ 1• ~ ~ ~ , 6. ALL STORM INLETS SHALL BE PROTECTED BY WIRE FABRIC INLET PROTECTION ''~~i~,,
_ 37 35 , ' ~39 ; ~ ~ ~ 7 w 8 4 Rebar ~ ~ Q, _ F .11 # , 53 ~ ~ ~ / ~ AS PER DETAIL ON SHEET GR-2. SEE SHEET GR-2 FOR STORM DRAIN DATA. , ` ,J~ FUTURE' ~ /
Total ~ S COB ( cor #4680-95-4434 ~ Sb / 1" Iron Pipe ~ ~ 73..7 ~ q CONNECTOR ~ ` 702. ~ / 7. ALL STORM OUTLETS SHALL HAVE RIP RAP OUTFACE PROTECTION AS PER DETAIL 20.55. p~','~ L ~ % Ir
Now or Formerly ti ~ J J 8. ALL FLARED Ep~g~E~TIONS SHALL BE PROTECTED AT THE TOP WITH TEMPORARY SILT ~ N ` 7 _ C
in ~ r % Rebar % Shwe U. & Chnstme My t ~ , 5 - ~ 4 % / FENCE P~ DETAIL 30.06. _ ~ pz
Pa'e 153 ~ S - TEMPORA Y DIVERSION SWALE # Deed Book 762 g T 8 -95',6471 Rebar LD,t #1 '$ethany Woads Subdivision j ; PER DET IL 30.05 TYPICAL 5, f ~ ~ TSB WITHIN TH PR POSED DIVERSION ~ ~ • ~ 9. PE ENT GROUNDCOVER MUST BE ESTABLISHED E 0 ~,y Q , 524;'4 ' " ALES. ADDITIONAL MECHANICAL MEASURES MAY BE REQUIRED IF THE VEGETATIVE
' 4 ` `Plat Book 20 Page 7 ~ Ndw Formerly i 4690-95-9309 ~ h ~ ~ S8821~ E y•,~ ~ ~4'COVER CANNOT BE ESTABLISHED AS PROPOSED. ~ """'''aP r v ~,~V 0
~ ~ Shwe & Chnsti e~, yin ~ # Now or Formed ~ Deed ~p~k 762 ge 153 y 1 K~
o ' ' ivi iorr Shwe U. & Christine My~nt ~ Subd ~ Lot #2 Bethan ods ~ \ ~ _ P ~ ~ TOP OF SLOPE BERM ~ i '2- , / ~ PER DETAIL 20.50
~ Plot B Page 7 Deed book 762 Page 153 ~ + s / m Lot #3 Bethany Woods Subdivision I ~ ~ / w ~ REVISIONS BY
r ` 4690-05-0348 Plat Book 20 Page 7 # TO .BED ISE© TO" Now or Formed 4i Y TWE CITY OF COtGC( 3E D,E~IISE© T0~" CITY OF CONCORb / ~ J' RENSED 5roRA1 rwu
o \Shwe U. & Christine Myint PR10~t TO SUBDIVISI ~2 TO SUBDIVISION _l`; / / ~ ~ PtAN JMY
Deed Book 762 Page 153 - j Lot #4 Bethony Woods Subdivision ~ 5 00 RE ~ A c~~wc~s,z/~o/a'; ~ yak
d ~ PAR ING / 'FUTURE ; ~ Plat Book 20 Page 7 p =UTURE ; ~ ~ ado PER NcowO u~o JMY ~ / B rrr~w ~ ~h4/o4
~ In ~ 30,000 S.F. , co ~ HAN6ER , \ N I / F.F.=705.00 ~ I,0p0 S.F. IAN6ER , ~ 1' 1 ; ~ AENSED PER COMIIEaITS
N ~ ~ =.=705.00 ~ / F TURE BY NCD~NQ JMY • ' o TA~ I-WAY- ~ Ci p/OY/04
~ d- r~ I / , } co ~
°o ~ ~ o N 1 ~ , Q~ ~ N
~ ~ _ _ ~ f I / N ~ ~ P ~T- _ _ TEMPORARY SLOPE DRAIN ; % IcT ~ ' 167, 71 SF ~l ' TEMP RARY RISER BASIN #1 7, 71 SF / J
~ ~ . 4 TYPICAL PER DETAIL 30 0 w I ~ 3,838.%AC 3 - . _ t~, / •838.%AC 12" AMP BARREL & 18" PERFORATED CMP RISER
Ylnt I ane ~ I ~ ANC~OR RISER IN 1'-6"x1'-6"x1'-0° DEEP i ~ , CO CRETE BLOCK. INSTALL 4'-0" ANTI-SEEP
u, 6 _ 0 ~ 1I` ~ AR N BARREL JUST BELOW CENTERLINE OF 704 I 702; COL 0
z Ig t o - - ~ ~ ? ~ ~ r ~ ----rim a - . _ l , ~ x) RB#. RB#1 ~ v B M. CONSTRUCT 8' WIDE TRAPEZOIDAL
_ Y ~ , 3 ~ _ _ I:' ~ - 10,463 -o - , CO _ 10,463 SF ~ J E,~ERGENCY SPILLWAY WITH 3:1 SIDES IN VIRGIN Date: 12~09~03 ~01L. SEED ENTIRE BASIN AND SPILLWAY UPON
_ _ ~ p I ' ; OMPLETION OF CONSTRUCTION. BOTTOM OF 1 a=60~ Hor. _JB33 ASIN=672, TOP OF RISER=674, SPILLWAY Scale:
~ - - _ Z I x ~ Q I - - -~T~_~ ~ 2 CONTOURS T5B NVERT=675 & TOP OF BERM=676 AS
z ' - - Q - . I TAI .O1 TYPICAL Drawn: JMY - , ~ ^ V PER DE L 30 BEFORE YOU DIG ! _ „
,
1C710 CALL 1-800-632-4949 uneckea: ULM
w - - - 64 L N.C. ONE-CALL CENTER ITS THE LAW I Job: 03-07-06
Concrete » Monument
; #4 Rebar r ' 24 310.001 '89°41 58 E sheet
, 246-89,11, iron 1" Iron #5 eb
Lot #5 Pipe 61W TEMPORAR FE GR- 1 Pipe S89 4 5 PER`, DETAIL 30.0 YPICAL ( Tie Line
Bethany Woods Subdivision W 39 BV 54 Plat Book 20 Page 7 ~ 1 1/2".-Iron ~ FEB 9 2004 A4589-97- 422 i A C 2/09/04
L DESIGN ASSOCIATES P. A. Owner: Approved: Date of Issue: L. 3 sheets
-2 Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN a
lJ

CONSTRUCTION SPECIFICAl10NS
1 TRASH RACK
I f #4 REBAR - 1. Site preparations -Clear, grub and strip topsoil from areas under the ~ embankment to remove trees, vegetation, roots and other objectionable >
material. To facilitate sediment cleonout and restoration, clear the pool area of Oq
70P OF RISER I I all brush, trees, and other objectionable materials. Stockpile all topsoil or soil M" ~ • Q ~ containing organic matter for use on the outer shell of the embankment to ~ ~
I I facilitate vegetative establishment. cNS~ +
I I • ~ a~~
I I I PERMANENT PRE-CAST CONCRETE DROP BOX TOP VIEW- 2. Cut-off trench - Excavate a cut-off trench along the centerline of the earth fill 4 ~ ~ ~ roP vlEw i TRnsH RACK embankment. Cut the trench to stable soil material, but in no case make it less ~ N'~ 3 ~ #4 REBAR ~ ~ ~
I I TO BE ANCHORED IN CONCRETE TO PREVENT TRASH RA( TRASH RACK f than 2 ft. deep. The cut-off trench must extend into both abutments to at least l/1 w ~
FLOATATION. SEE CHART FOR SIZES. I I TOP aF R the elevation of the riser crest. Make the minimum bottom width wide enough `n ^ ~ N 0 TOP OF RISER "H" PRE-CAST CONCRETE BOX to permit operation of excavation and compaction equipment but in no case less ~ k
I I I TO BE PLACED AFTER CONSTRUCTION. than 2 ft. Make side slo es of the trench no stee er than 1:1. Com action ~ ~ ~ ANCHOR IN CONC. TO PREVENT P P P ~ V ~
MAXIMUM SEDIMENT STORAGE LEVEL I DRAW DOWN ORIFICE TO BE 6 BELOW DRAW DOWN ORIFICE INTAKE I p5 WASHED STONE FILTER COVER PLACED IN RISER AT A 45' To BE I I FLOATATION. re uirements are the same as those for the embankment. Kee the trench dr ~ T A as q P Y •?y
#5 WASHED STONE FLTER COVER OVER DRAIN PIPE, 12" MIN. THICKNESS ANGLE FROM NORMAL POOL iL POOL I I during backfilling and compaction operations. ~ ~ B TIDN. I - U yO 00
OVER DRAIN TILE, 18" MIN. THICKNESS A ( ELEV. TO INTAKE 1' BELOW ( NORMAL POOL ELEVATION. 20' PERMANENT PRE-CAST CONCRETE DROP BOX 3. Embankment All fill material should be clean mineral SOII free of roots WOOd 0 ~ ~ TO BE ANCHORED IN CONCRETE TO PREVENT Ve etOtlOn r k n Y ~
I I I I g oc s, o d other oblectionable material, Scarify areas on which fill 'ti ~ FLOATArioN. sEE CHART FoR sizES. is to be placed before placing fill. The fill material must contain sufficient ~ ~ ~ ~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O I I~ Z 0 0 12" I moisture so it can be formed b hand into a ball without crumblin . If water > ~ I I Y 9
0 0 0 0 0 0 0 0 0 0 0 O O I II ~ 0 0 0 0 12 0 00000000000 I I BARREL I I can be squeezed out of the ball, it is too wet for proper compaction. Place fill ~ ~ p BorTOM DRAW vALVE STEM material in 6 to B-inch continuous layers over the entire length of the fill area 3 0 ~
0 0 0 0 0 I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1~ I suPPORT BRADKETS As REOro. and then compact it. Compaction may be obtained by routing the construction 0
000 000 s a a I I hauling equipment over the fill so that the entire surface of each layer is 1~1 p ~ ~
i~i: t,a = ~ i 20 LF "K" DIA. PERFORATED DRAIN PIPE w ~ I traversed by at least one wheel or tread track of the heavy equipment, or a ~
tl U GROUT BOTTOM DRAIN W I I compactor may be used. Construct the embankment to an elevation 10~ p,, RAIN I~ higher than the design height to allow for settling. Subgrade and fill to be verified
20 LF "K" DIA. PERFORATED DRAIN PIPE - 36" MIN. AS REOD TO PROVIDE A lE A ~ and tested by Geotechnical Engineer. ~ noN. I II BARREL
CONCRETE ANTI-FLOTATION BLOCK WATER TIGHT CONNECTION. SEE CHART FOR SIZING & VOLUME. 11 4. Conduit spillways -All conduit materials shall be as called for on the plans
SECT/ONA-A CONSTRUC110N NOTES: _ _ _ J (Schedule 40 PVC may be used for sizes < 12" diameter).
CONTRACTOR TO INSTALL PERMANENT BARREL, DROP BOX WITH OVER-EXCAVATE ANTI-FLOTATION, DRAW DOWN ORIFlCE, TRASH RACK AND EMERGENCY r DEEP FDR +AIE f Securely attach the riser to the barrel or barrel stub to make a oR watertight structural connection. Secure all connections between barrel
SPILLWAY AS PART OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. SILT STORAGE GE I? . INSERT PERMANENT RCP BARREL ~ i sections by approved watertight assemblies. Place the barrel and riser on a i' ~L• INTO PRE-CAST CONCRETE RISER. firm m h f p ~
INSTALL PERFORATED DRAIN PIPE AND STONE FlLTER. ONCE ALL 30TTOM DRAIN W1TH INVERT IN OF BARREL =BOTTOM OF POND 5 OOt oundation Of Impervious Boll. Do nOt use pervious material SUCK as sand, gravel, or crushed stone as backfill around the pipe or anti-seep ~ ~
DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE "K' Pvc BorroM DRAIN W1TH _ 'K" GATE VALVE & SHUT-OFF ALL SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT +ALVE & SHUT-OFF coNCRETE ANTI-FLOtnnGN BLOCK collars. Place the fill material around the pipe spillway in 4-inch layers and H
BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. sEE cFIaRT FoR sizlNC & voLUME. compact it under and around the pipe to at least the some density as the ~ N adjacent embankment. Care must be token not to raise the pipe from firm ~ O
~ ~ contact with its foundation when compacting under the pipe haunches.
NOT TO SCALE ~ O O
NOT TO SCALE Place a minimum depth of 2 ft. of hand-compacted backfill over the pipe ~ r spillway before crossing it with construction equipment. Anchor the riser in V1 ~
place by concrete or other satisfactory means to prevent flotation. In no case ~ „ In
DESIGN DATA SUM should the I e conduit be installed b cuttin a trench throw h the dam after ~ SIGN DATA SUMMARY P~1D 1 P~P Y 9 9 • ~ ~
0 oro o on 'B' Normal Pool Elev oro o on lev, the embankment is complete. (n } rroal Pool Elevation 696,00 I`i (V
/4 'C' Top of Rlser wATBA , . of Riser 700,10 5. Emer enc s illwa -Install the emer enc s illwa in undisturbed soil. The -C Z P 9 Y P Y 9 Y P Y ~ ~
D Splllway Invert E ~LOw Splllway Wldth [f Illway Invert Elev, 706,00 achievement of planned elevations, grade, design width, and entrance and exit C ay Illway Wldth [feet] 10 channel slopes ore critical to the successful operation of the emergency ~ w
'E' Top of Berrl Ele p of Berrt Elevation 708,00 spillway.
'F' Barrel Length 'G' Barrel Size [Inch rrel Length [feet] 80' s .N N rrel Slze [Inches] 1B' RCP 6. Inlets - Dischar a water into the basin in a manner to revent erosion. Use ~ - r
'H' Drop Box Slze [I 9 P ~ U O Q op Box Slze [feet] 2'x3'x12,10' diversions with outlet protection to divert sediment-laden water to the upper O O ~
raw own r c 'J' Intake Elev, aw Down Orlflee [Inches] 3' end of the pool area to improve basin trap efficiency. tL (n take Elev, 69500 0 ~
'K' Bottorl Draln Sh .~-I ttort Drain Slze [Inches] 6 7. Erosion control -Construct the structure so that the disturbed area is minimized. W ~ ~
'L' Antl-flotation BI Anti-flotation BI tl-flotation Block Dirt, 6'-0'x4'-0'x3'-6' Divert surface water awa from bare areas. Com lete the embankment before ~ ~ ~ C tl-flotation Hlock Vol, 2,98 CY MINIMUM Y p
'M' Antl-Seep Collar the area is cleared. Stabilize the emer enc spillwa embankment and all other a ~y~ tl-Seep Collar Slze 4-6'x4-6' disturbed areas above the crest of the 9 rinc al s ' Y W ' p p plllway Immediately after W
2 Year Peak E Year Peak Elev, & Discharge [cfs] 700,08 & 0,47 construction . ~
Pre-Develop Post-Develo Pre-Develo ed Run- ff [ f ] 41,68 ) p D cs Post-Developed Run-off [cfs] 67,25 8. Safety -Detention basins may attract children and can be dangerous. Avoid
10 Year Peak E Year Peak Elev, & Discharge [cfs] 700,77 6 18,47 steep side slopes, and fence and mark basins with warning signs if trespassing
Pre-Develop Post-Develo Pre Developed Run off [cfs] 74,06 is likely. Follow all state and local requirements. rr^^ V1 Post-Developed Run-l]ff [cfs] 117,60
Year Peak E Year Peak Elev, ~ Discharge [cfs] 701,66 & 31,28
Pre-Develop Post-Develo Pre-Developed Run-Off [cfs] 92,64 Post-Developed Run-Off [cfs] 146,30 ANNUAL INSPECTION MAINTENANCE PROCEDURES
50 Year Peak E Year Peak Elev, & Discharge [cfsl 702,43 & 32,20 ~
Pre-Develop Post-Develo Pre-Developed Run-Off [cfs] 106,52 ICI Post-Developed Run-Off [cfs] 167J4 I. Annual Ins ection: Annual ins ections shall be sche I i f n r n
B B 100 Year Peak E' 1 Year Peak Elev, & Discharge [cfs] 702,95 6 32,80 P P du ed by C ty o Co coda d
Pre-Develop Pre-Developed Run-off [efs] 115,75 Owner to be performed on the first of June each year.
Post-Develo Post-Develo ed Run-Off [cfs] 181,99 II. Inspection Activities:
. H
CATTAIL (T~ CATTAIL (Typha Latifolia), 1 Gallon Size a) Testing of the emergency drain pipe valve. b) Visual inspection of drawdown orifice. 1~ h..,~
PICKERELWE c) Visual inspection of the trash rack at the intake orifice. H PICKERELWEED (Pontederia Cordata), 1 Gallon Size ~j
d) Visual inspection of the emergency spillway. r , V e) Visual inspection of the pond rim and slopes. ~ A
s~Lw,~r~ir~w BLUE-FLAG BLUE-FLAG IRIS (Scirpus Validus), 1._GattorrSi~"~-,-~~"' f) Measurement of the wet pond depth at the dam end of the w
NOT TQ SCALE _ detention pond (Distance from permanent pond drawdown orifice _ _ _EDGE Of POND_ _ _ _ _ - invert to bottom of basin). h~l
~ g~_Q" *~-SPILLWAY MAY 8E ' - - - - - g) Visual inspection of all stormwater structures on the served site z
ARIE VARIES VEGETATED INSTEAD ARIE "D" (MIN) ARIE (MIN) inoa feeding the detention pond. cJo~
OF PAVED IF h) Visual inspection of the total site drainage basin for adequate ~ ground cover to stabilize site.
CONSTRUCTED _ _ TOP OF BERM EL. = E" T4L~~~.. ~ i Vi I in i n - , . W ) sua spect o of upstream (off site) areas feeding Into the site W
ENTIRELY IN CUT. Nbi ~ drains a basin for otential off-site sedimentation sources. ao~ 9 P J
I WAY INV.= D VARIES SPILLWAY INV.= "D" a SP LL ~ z\ o III. Maintenance activities shall be performed as follows: Q }
in ci d ~ ~ cJo~ J 1. After every significant runoff producing rainfall event and at least monthly:
a.- ' \ ~ ~ SPILLWAY WE1R LINING+~ ~ C b a
i ti a. Inspect the wet detention basin system for sediment accumulation, erosion, trash H ~ accumulation, ve etated cover, and eneral condition. '~l+ inUd 9 9
4' O.C. 4' O.C. cvo~ W
PI TYPI TY caL CAL b. Check and clear the orifice of any obstructions such that drawdown of the temporary ~~II EDGE OF LITTORAL SHELF pool occurs within 2 to 5 do as desi ned. '`4
ND EDGE SP/LLwAr SECT/ONA-A _ SP/LLwAY SECT/ONB~ Ys 9 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
CLASS II RIP RAP OUTFACE PROTECTION. mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
NOT TO SCALE MIN. THICKNESS= 12", LENGTH=6'. NOT Tn SCALE NOT It7 .SMILE
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 wet detention basin system semi-annually or when
~ i ----r-.--.~__. ___i _-T_.~_~~., .-r__-~______,_.__ I _ _ _ depth is reduced to 75% of the original design depth (see table below). Removed sediment ~ ~ ~ ~ ~ shall be disposed of in an appropriate manner and shall be handled in a manner that will
I _ I _ , , T _ I- _ ~ _ _ _ , I I ~ _ _ I - - - - I not adversely Impact water quality (Le. stockpiling near a wet detention basin or stream,
I ~ j i , i I i ~ i , I ~ _ , ( 1 t "-C,E1V~!//Y£G~PR/A/ARX.A°/liL1Y4Y I _ i etc.).
~ j _ _ _ _ ; i j I i The measuring device used to determine the sediment elevation shall be such that it will 1 viii, it +
i I ; I _ _ _ - _ j I I ; ~ _ _ i j ~ i _ ~ _ , _ I , r ~ I I_ f _ _ _ ~ I _ l _ _ i _ i glue an accurate depth reading and not readily penetrate Into accumulated sediments. A
E ~ i _ i ~ f ~C1 , 'i o ~ N , __~_1 ._____1__._____~,M~__r._~_;_.______^_~ When the ermonent ool de th reads 3 feet in the main and, the sediment shall be ~P i I I P P P P ~'~~p
i I I 1 i 1 ~ ~ i _-j I _ _ _ L- _ _ - ~ _ __.I _ _ _ { _ ~ i- _ ~ - I _ _ I _ i _ , _ _ x _ _ ~ _ removed. 0 6 Y } o I- I I ~
i ~ ~ -
- ~ _ , _ __j _ I_ _j $ _ I ~ I f I ~ i I I C I G ~ t - - - - - ~ - - ~ - When the ermonent ool de th reads 3 feet in the foreba ,the sediment shall be - ~ Z i removed. y • , r - -
, I I ~ I ~ I, I _ , _ ~ _ I _ _i _ , t _ ! ~ _ _ I ~ ~ C
~ I DIA. SCH. 40 PVC I ! ~ j ! ~ I I ~ !WEIR ILLWAY ~ ` 1 - ~ a - ~ - - ~ - ~ - 3 5. Remove cattails and other indigenous wetland plants when they cover 50~ of the basin d i WEIR SPILLWAY ~ ~ 0 " , ~•~'~P _ v~_~_ ~ ~ a surface. These plants shall be encouraged to grow along the vegetated shelf and foreboy ~}0 _ I o• I _ ___r__._..~..~..__~__. berm. ~''+ri
c I I- -I- ~ SLOPEIT_~ I ~ ~ I ( ~ I _ _ _ i_ _ { _ INV. E~.= D L _ I DRAW- OVYN"ORIFlCE 0 I .l U _ _ u`
> ; _ s ~ _ I ~ i I ' -d i INV. B r . -o f I I _ ~ ~ _ , ~ _E I 6. If the basin must be drained for an emer enc or to erform maintenance the fiushin of -_~_0 8 _ _ _ ! 9 Y P 9,
E _ _ , _ _ _ ~ _ _ _ I - - t. ~ _ _ _ _ . _ _ ...TOP OF ~ERM EL E" E. _ _ _ ___INTAKE 4EL-.-- _ _ w I ; I ~ j ~ ~ i w I ~ ~ i I _ I i ~ _ _ I 1 ~ ! ~ sediment throw h the emer enc drain shall be minimized to the maximum extent practical. REVISIONS BY I s ; 9 9 Y
:a I _ ~ I _ 1_ _ _ ~ _ ----F- _ _ _ ~ _ ~ . _ i _ _ _ _L _ _ , I ~ I v - W N _ I _ i I__ 7. All components of the wet detention basin system shall be maintained in good working REVISED PER CdAMENTS
o ~ _ ~ ' _ I _ -I l_ L _ _ ~ j _ _ i _ _ I Y I ' 1_ ~ ~ ~ I I I i _ i X I i I ~ ~ I i _ _ ~ ~ ~ ~ : i _ ~ _ order. A BY NCDwQ JMY
4_lil~._----- ---1---~-._.__I__~_.__.._ I _ .~_-~----T-__ d i l _ _ ~ ~ ~ ~ > h
I I ~ ~ - ~ - _I_ _ _ _ _ _ _ _ I _ i_ _ I_ x ~ _ L _ I _ - _ - ~ ' ~ $ 'I F FLO FROM t~AFFLE MAIN POND ELEV.-"B" ' ~ ~ I f I , I ~ ~V U ~ ~ ' 4 O
~ 20 ,WEIR OR I _ - _ ~ i _ _ ~ y _ ~ , _ - i I I ~ ! i I i r ~ _ i - - 1 t I ~
' 6:1 MAX. SLOP FOR UTTORAL~SHELF ! i ! I L _ _ _ _ _ _ _ _ _ _ _ _ _ _I _1 - _ _ _ _ -I M ~ r I $ ~ I I I ~ i i 1,, 1 I , ; _ ..I I m ~ i~ I N R' A POaI EL= .B. I L ~ _ _ _ ~ _ i N ~ rn I i r __I 8 I
i ~ NORMAL POOL B _ ~ ~ 0 L I o-- I ' I i I
~ i , ~1_____.,__ , i I T I GENERAL NOTES:
cv ! ' : ! I _ ~ _ ~ _ I _ _ _ l _ _ _ ~ ' .BOTTOM BAFFLE i ' I ~ I BO ' , I 1 ~ E7..= 693.0 , f ~ _ . , ~ I I
.r. ~ FROM lOP OF ~ , 3 I _ _ r I i C- _ i _ I. - ; I ! ALL BMP FILL EMBANKMENTS SHALL BE COMPACTED TO 95Z STANDARD PROCTOR.
' ! I ~ OOTOM POOL I = "A" i i ' ' _ I BOTTOM P E.L=' "A" ~ i ;'-MIN 10' I j I i 4' MIN 10' MRV i iL EL=' "A' 1.3~Z ~ i , BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION.
~ 1. - , I I I i I! _ , I _L_ __I. _ ~ I I
m i ! I I I j ,PROPOSED GRADE I _ _.___i~--_________L_T_~, I I Date: 12~09~03
,LITTORAL SHELF1 TO BE PLANTED _ _ _ ! _ _ _ _ 1 _ _ 1 i j _ ..PROP ,SED GRADE.. - j i. ' I ~ , I ! ' i ~ I _ _ l _ _ _ 1 _ _ _ _I
~ I _ iWI1H ACCEPTAB~.E AQUATIC PLdNT i i i I I _ ~ _ _ _ j I I , , cn I i_ T _ _ _ _ I - --i Q _ __ISPECIES AS SHOWN- IN PLANTING DET. _ 1 _ ~ , ! ! ~ I Scale. N A
Z ! _ ! ' j _ _ ~ ~ j'L' PERMANEN _CONCRETE ANdiOR Q _ { _ _ _ I t I I I. I ~ I HOR _ _ ' _ _ _ ~ _ i _ ~ I
- - ' I Drawn: JMY
cT I I I i I ± I ! 3 I i j I rh,,,.i,a,~. 1111A
•MrxOr-60 TH1
O C C. ANTI-SEEP 0 I C. ANTI. Job: 03-07-06 -SEEP 0011ARS.
i
o ` ALL tONNECIION TO INLET BbX MUST BE _ _ h _ I I IiIE /A/Al~ I j r PB0cfAV1ak4R 7V GLENID~OF PR YSPIZZMA Y SEALED WAtER )X MUST BE sheet i
IIGHT. 1 f BEFORE YOU DIG J PD- CALL 1 -800-632-4949
1 I I I I a I, I I N.C. ONE-CALL C ER
a ITS TYE'r. L A20904
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: 0 1 sheets
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R ~ ; ~ ~ . ~ ~ ~ ` ~'h~ ~ ~ ' 8 W GRA~iL~L & RIPS h'ILTER ERM BAST N ~ ' r ~ 1 1(+~ ) i ~ -c- ,S ~ ~ .1 i~a IBC ~4 S Y _ 706 ~ ~ ~ ` ~~-t...; v~;;cia' ,i . , ~ ~ ER DETAIL 30.'12 , ~ASI 7301 _ - ~ V ~ N ~ i ~Nr ~ o 00
E T , . - ~ R r a o 0 U Z t`
,y ~ , _ t, ` ~ ~ ~~'"ti / - _ RE FABRI INLET TECTION AREA WHERE FENCE AROUND ~ (A ~ ~ T GTI ON ~ ~ ~Q ~ ~ E v; AIRPORT TO BE REMOVED ~ ~ V1 ~ ~ ~
~ x ~ I ! ~ f°:~ Y~~~,,~d°''`~~'' a + PE -TAILjlrON SKEET G TYP. .T G TYP. ~ DURMNG CONSTRUCTION AND aW ~ ~ ~
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r ; ~ j t'~ ~ n ~ ~ , / ~ P~ D IL 30.05 TYPICAL SWALE TO ~ p,, ~ ~ REMA AFTER CONSTRUCTION TO .~1`s ~
~ IVERT R TO HW3. ~ 'a
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u F ~ ~ ~ i ' l R~10 A - 7S'' / i a ~E RARE S~ ~ a' ~ 1 I r V
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1 ~ ~ ~ ji t ~ ~ , .r j ~ t i` 1 ~ P ~ ~ ~"~°i i' r ~ i . 1 V i`~ . ~:m. 1 . - v r y t ~ Y
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i i i ~ ~ I C ~ 1 ~ I ( t' ~`~ii, ~ t ~ t i A ~ ~ ~ i ~ ~ i ' ~ r ~ I ~ 42 . , s" I I PER DETAIL 30.0E ~2 SF ~ ~
i I ' ~ i , t ~ ` , i ~ ~ ( / r ~ , r , T.W 710.00 r ~ ~ T TEMPORARY DIVERSION SWALE ~ D ~ t~
. ~ ~ 8.36.0 : i ~ - ~ ~ i ~ i ~ ~ ~ i ~ ~ ~ t , , x.360 PER DETAIL 30.05. ~ ` 710 / ~`F ~
~ . i~ E ~ ~ 1 ` ~ I~ y J TION ~ ~ `1 , y r-- RIP RAP OUTFACE PROTEC In ~
~ ~ ~ ~ i ~ ;r'"' i ' ~ [ ~ 1 ~ ~ I A ~ r ~ ~ ~ f ' i w ~ - - ~ j ~ f ~ ~ ~ r' w PER DETAIL 20.55. ~ ~ ~ l17
r' / ~ it i; r i .r~ . i i %J ~ ~ l f~ i IJ ~ r t 5 ~ ~ ~ ~ ` ( / 155,~Q50 ~ SF o ; i _ " -j TEMPORARY SILT FENCE
~ r r ~ I ~ i 1 I ~ i ! 1, ~ ~ ~a ~ ` l 3 ~ % , , t ~ ~ ; y ~ ! PROP FF 711 ~--p ~ 1 ~f Z N 1~ r RETAINING ~ ~ ~ ~ >>y / ~ - PER DETAIL 30.06. ~ -C ~
r r,. ~ ~ ~ ~ , ~w ~ 1 r ~ ; ~ ~ ~ r ; ° 24 WALL / ~
III, i'i~ h I ~ ~ ` , l i f ~ ~ i ` ; r ~ ~ ~ 1 i \ ' r f STABILIZED CONSTRUCTION ENTRANCE I i ? ~ ~0;~?c ~ r PER DETAIL 30.11.
l ~ TEM~'ORA~`YSILT FENt~ t ~ ; „ ~ I ~ ~ 1 v ~ ~ it ~ ~ - . ~ PER D~TATL 30:0 TjYPIC,AL ,1 ;yi,, I , ~ , 1 ~ ~ ; ~ ~ t;~ ~ i ~ i HrnN m18~ f r' ~ 4690-15-0938 ~ •
~ `~.ti j ~ j / ~ # TOP OF SLOPE BERM ~ - i f f ~ Now or Formerly ~\r- TSB pER DETAIL 20.50. U = ~
i i , I M } ~ ~ ' ' t 1'. ' ~ 1 ~ G~ 1 f j ~ //~/~1~ I P ,,~V A ` fy ~ - Cit of Concord ~ C- ~
f ' % 1 %~r t \ ; I f l A i ,~j" ~~1 l l ~ / 1 ~ ~ ~ ~1 ~ ~ ' >~t Deed Bgok 4059 Page 299 WIRE FABRIC INLET PROTECTION C ® N ~ .p, ~ PER DETAIL ON SHEET GR-2 W
~ 709.00. ~ ~ CCj C ' ~ ! l Q
453 461 1 , ~ ~ ; ~ ~ C / ~ ~ _ TEMPORARY SILT FENCE GRAVEL & RIP RAP FILTER BERM BASIN Q. i , ~y
~r~ ~ • 1 ~ ~ -10.410 AC r ~ ~ ~ ~ ~ ~ i ~ ~ ~ DER TAIL 30.06 TYPICAL PER DETAIL 30.12. F~+-4 ~ ~ ~ V ~ ~ Lf7
i~ ,~r ~ 1, i n i . ~ ~ I r` 'o - - - - - - EXISTING CONTOURS ~ ~ ~
i ~ - f PROPOSED CONTOURS
r" ,t f 1 ' ~ ~ t ~ ~ ~i ti l / I
t' I ~ ~ ~ f , s M 3~. Q i t 1 ' ~ ~ ~ IMITS OF CONSTRUCTION TYPICAL
~ ~ a 7 3 ~ i I ~ ~ ~ 'a n TD ' / ~ j I ~ ~ ~ / 710 1 ~ i ~ 1 ( / ~ ~ , ~t i p i ~ I ~ ~ % / 9 X1,5. i ~ j S ST SOIL TYPE BOUNDARIES (TYPICAL)
i' ! I l ~ ~ ! i i ~ r - ~ i ~ ~ i ~ ~ ~ l 1 ~ ~ ~ ~ Ji ~ ~ ~ I 1 ' a H
, ~ ~i , ~ ~ l I ~ 'i / ' 1 / % r / ~ ~ ~ ail i I ~ ~ ~ i SPOT ELEVATION MARKER (T.C.=TOP OF CURB)
1 l ~ i \ ~ ~ i i ~ ~ / ` I ! / ~ , ~ ~ r ~ : ~ I' ~ i ~ T.C.
~ ~ ~ ~ po ~ ~ ~ ~ ~ ~ ~ ! I i ~ ma 1 A r" i j i~ I ~ i 0 i ' 1 / ~ SPOT ELEVATION MARKER ~ P A MI .',3 TIER SILT FENCE BA a
I ~ i ' ( / ~ ~ I i i`! ~ o.d ~ HELP SURE PROPER MIXING OF T.W. (T.W.=TOP OF WALL) ~ N M..~
~ I r ~ i ~ ~o ~ ~ i~ ~ ti 3~4 Iron 1 / ~ ~ ~ ~ , ~ l { ~ ~ ~ oo $X ~ , - S RMyVA EP PER NC:DW4 REQUIREM NTS. g SPOT ELEVATION MARKER w _
1.~ Pie 1 ~ ' ~ n ~ ~ ~ ~ P i i ~ , ~ / } ~ + e f v B.D, (B.D.-BASE OF DOCK) STOR1ti~WATER J ~ ti N ~
' / k ~ l °+6 ~ ~ 1 ~ ~ ~ `V i ~ ~l 1 , ~ \ l'V~ ~ ~,y, 0 9ETENTION ND ~y ' ~ ~ W
% i ~ i ~ PER E ICS 0~! + ' ~ S T PD 1 A
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- I t t `r j < < ~ V ~ 708 ~r /s 1 ~ ~ ~ r GENERAL NOTES:
j i f ~ l % 'FUTURE . ; , ~ I 1. 1. BOUNDARY SURVEY INFORMATION PROVIDED BY PIEDMONT DESIGN ASSOCIATES, P.A..
t.. _ 1 1 ' ~ i ~''s C81 Y ; S ~ 2' FLUME - ~ ~ ~ ; , ~ ~ o Y ~ ENGINE j J~. r/ 1 E t J ~ ~ % ~ V s 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING
4 - r 3 T.C. _ ~ ~ / O6 705. 8 DI1 _ ~ - _ 1. ~ 2 FLUPIE ~ F BU~ILDItaIG t'; r r - ' ; ` UTILITIES SHOWN OR NOT SHOWN ON PLANS) PRIOR TO ANY GRADING ACTIVITIES. f ' E /30,000'SF ~ ~ ~ (
~ y` - - ~ _ / ~ ~ CB12 l J` ~ ~ (j ; i ANY CONFLICTS SHALL BE BROUGHT TO THE ATlENT10N OF THE ENGINEER. ~ r ~ /
• ~ f ~ - ° / o ~ ~ 50 ! - - ~ { ; {i ~ ~ ' ~ r' f ~ 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. M~' Y / ~ ~ 3 4. ALL EROSION CONTROL MEASURES MUST BE MAINTAINED UNTIL ALL DISTURBED M..y
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_ ~ ~ ; / ° ~ ~ r 89.E-2,- ~C ~ TD' ° _o _ ~ r~ i / l i Q f ~ 5. SEE SHEETS GR-2 AND GR-3 FOR EROSION CONTROL SPECIFICATIONS AND DETAILS,
Re od r I : LC ~ - - - i ~ lC Lam„ , ~ ~ ~ 6. ALL STORM INLETS SHALL BE PROTECTED BY WIRE FABRIC INLET PROTECTION ~ ,
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° . ~ ~ ~4 Rebar; J~3 ~ ~ ~ r ` CO~dNEtaTOR ,i' ~ r' ~ 702' i 7. ALL STORM OUTLETS SHALL HAVE RIP RAP OUTFACE PROTECTION AS PER DETAIL 20.55. 0;• ~ b'~,,y '
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Shwe U. & Christine M in~~. ~ t ~ I ~ Reba ~ . Y ~ if ,r' ti i ~ S j` ,E r ; ; ; FENCE PCB DETAIL 30.06. Q
Deed Boob 762 Pa 153 , ~ ~ ~ ~ TE~IPORA Y DIVERSION SW E # ; ~ $ -9~64~1 I. ~ r 1 ~ ~Rebar • ~l ~ ~ 'TS 9. PE NENT GROUNDCOVER MUST BE ESTABLISHED WITHIN THE PROPOSED DIVERSION ~ ` ~ ~ " v r UIRED IF THE VEGETATIVE d ~ P ~,2~ , ; S 8 ALES. ADDITIONAL MECHANICAL MEASURES MAY BE REQ ~
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m Plat Book 20 Pa e 7 ~4~90-05-0348 ,gym ~ ~ TO .B~ D ISE ~ 9,_ \ Now dK Formerl TWE CITY OF
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3 v, ~ ~ f 10,463 SF ; ~ + ~ SOIL. SEED ENTIRE BASIN AND SPILLWAY UPON
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DESIGN ASSOCIATES P.A. Owner: Approved: Date of Issue: 1104 3 Sheets NT
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J., - ' ~ y ~ ~ in U' ~ ' fFLUME ; ~ f , f i ! f ~ ~ T ~ ~ ~ ~ 1. BOUNDARY SURVEY INFORMATION PROVIDED BY PIEDMONT DESIGN ASSOCIATES, P.A.. f ~ U URE , ,
L ~ ~ ~ ~ s, `~s ~ ~S r r y - ~ _ 1 i i ~ S C81 i 2' FLUME _ t , y ; ~ , ~ ENGINE ,i i „l ~ ~ v ~ 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING
_ 1 , , o _-~..~.r ~ r ~ ~ a 0 .83 - ~ _ T.C. O6 ~ ~ Bl11LDII~IG ~ ` - ~ ~ I UTILITIES SHOWN OR NOT SHOWN ON PLANS PRIOR TO ANY GRADING ACTIVITIES.
~ i ~ 705. 8 DI1 2' FLUItE ~ . , r° ~ _ ~ i ~ I ~ ~ i i ~ ~ t` j ~ ± + ANY CONFLICTS SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER.
t ~ CB12 • ~ D117 1 _ y ~ / ~ ` ~ 7 ~ ~ f ~ 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. 1~ ' ~ ! F-1
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Piat Book 20 Page 7 - ~ Formerly ; 4690- 5-9309 ? - $hw . ~ Chnsti ihtQ ? r ~ # ~ / r , f j COVER CANNOT BE ESTABLISHED AS PROPO ED. 'liiiiiii~~~~~
~ ~ s~ y ~ _ Now or Formerl ~ , ~ % ~ ~ Qee 762 ge;153 y ~ r ' ~ hri tine M int K - ~ d ~ % bP OF SLOPE BERM f j , ~ ~ ~ .r'PE~t DETAIL 20.50
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a ~ ~ Y ,n TWE CITY 9F C~IVCOR~ ~ /r . ~ ~ ~ i~ l / ~ i` CLEARING PER SITE PLAN JMY
~ ~Shwe U. & Christine My~ t ~ ~ PR T SI sA , ~ Deed Book 76~ Page 153 - - ~PR T fSU,BDIVI~fONj ,f : , ; ~ ~ A cH~NGES t2/3o/03 r° ~ f/ r ~ / ~ f °r ' , i (Q ; / REVISED S1 DRNN ak
d Lot 4 Bethan Woods•Subdivision ~ ~ • pp RE # y ` N ~ ING (FUTURE f' `F %,I , j i i / r" i` POND PER NCDwQ AND JMY FUTURE f ~ ~ , ~ i ~ i ~ ,V ~ B RYAN iNG 1/'14/04
N ~ Plat Book 20 Page 7 p / 30,,600 S.E I-- ~ \ _ y 0 r ~ ~ ~HAN(aER 30,,000 S.E: , ~ ~ ~ / /
iv \ ~ ~ ! ' F.F.=705.OQ HAN(aER / ~ ~ l ~ ' ~ ~ ' i / _ j ! ~ , t ~ % F TARE ' F.F,=705.00 ~ T I-WAY`
N o ~ ~ ~ / / r` ~ ' r / ~
~ J Ar} + ,r ' ~ ~ ` ~ ' ~ ~ A Y RISER BASIN 1 i ~ TEMP, R R ~
r-' 167, 71 S1 to ~ ".~5--~-~~ ~ r, ~ A r , 3.838/'AC 167, 71 S f f ~ r ~ f + 12"-AMP BARREL Sc 18" PERFORATED CMP RISER
3 - , .6 1 ~ ~ ! r 3.83 'AC I ~ I ~ ~ ~ / ~ > 8/ ~ , AN~G~OR RISER IN 1 -6'x1'-6'x1 -0" DEEP
Y nr ! ane - _ i ~ ~ I ? ! ~ ~ ~ ! ~ CRETE 'BLOCK. INSTALL 4'-0~ ANTI-SEEP rti i t ~ f ~ ~ + ' ' ~ ~ ' ~ { ~ CO AR ON BARREL JUST BELOW CENTERLINE OF
w ! Q z 1 t _ i g o ~ f . ,l ~ I ~ 7Q4 702 U'~ ~''RB 1 ~ + ~ ~ J M. CONSTRUCT 8' WIDE TRAPEZOIDAL
a _ - , ~ _ Y ~ Vl _ o Ir yl ~ ~ ~ ~ ~ ~ 1 EMERGENCY SPILLWAY WITH 3.1 SIDES IN VIRGIN. Date: 12f 0903 10,463 SF ~ .ti ~ r ~iIL. SEED ENTIRE BASIN AND SPILLWAY UPON
~ _ ~ ,I J F ` ~ ~ ~ ~ NSTRUCTION. BOTTOM OF ' s , OMPLETION OF CO - 1 60 Hor.
~ z , J6~3`. , , PI WAY Scale: , , 1 ~ i ~ t ~ ASIN=672, TOP OF RISER-674, S LL 2 CON~I.OURS ~ ,
Q r ~ z _ , T B v NVERT=675 & TOP OF BERM=676 AS Drawn: ER DETAIL 30.01 TYPICAL JMY
_ _ - _ _ ~ _ ~ ~ rai.:_ BEFORE YOU DIG ! _ „
I - - _ --s _ ! CALL 1-800-632-4949 Checked: ULM
U - ' ` CC N.C. ONE-CALL CENTER I IT'S THE LAW I Job: 03-07-06
o - Concrete ` » nument
e #4 Reba' 10 Sheet \ 4!1 58 E 000 g 31
i 4"6.59 Ire i
Lot #5 Iro l 5 eb i~4 GR- I 156 W1 TE PORAR E X41 Pipe 1 ' Ti6 Line
n Pipe v Bethany Woods Subdivision I PE ,\DETAIb, 30.0 , YPIG~AL JA N 151004 B 1 /14/04
0 !3 ~ 8 Plat Book 20 Page 7 -2 ;Iron 4,5 4, d ##589-97-547,2 _4 1 ONT DESIGN ASSOCIATES,. P.A. Owner: Approved: Date of Issue: o 3 Sheets
OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESI Location: PR-20 PUBLICATION
m J
U

NARRATIVE: . . .
STORM DRAIN DATA:
Ryan Companies US, Inc. is building c7 racing facility for Ganassi Racing on 6. Clear vegetation and grub stumps from all areas to be graded. INLET ~
a roximatel 22.20 acres located ofi proposed Westmoreland Drive. The scope of work PP Y will involve clearing, grubbing, grading, storm drains, aggrgrate base, paving, building 7. Strip topsoil and stockpile on ~;ite for redistribution upon completion of grading. o0
construction, water, sanitary sewer and associated utilities. Disturbed areas will be STRUC. ROAD C.L. OR T.C. INVERT INVERT INVERT INVERT PIPE PIPE PIPE MIN. FULL FLOW M"'~ • A ~ ~ ~
protected by a riser basins, silt fence, temporary diversion swales, top of slope berms 8. Install temporary diversion swales as indicated on sheet GR-1 to divert water and TY N,~'~ LD. STATION ELEV ELEV IN #1 IN #2 IN #3 OUT SIZE LENGTH SLOPE SLOPE VELOCI • a-~~
and wire fabric inlet protection. Total disturbed area is estimated to be 22.06 acres. sediment into erosion control reasures. C B 1 0+56.40 705.03 705.01 NA NA NA 702.07 15 28 0.50 0.50 3.72 p, oo ~ ~N
Upon completion of construction all disturbed areas shall be permanently stabilized with C 62 0+56.40 705.03 705.01 701.93 NA NA 701.73 15 76 0.50 0.50 3.72 . w ~ ~ s~ o
grass as per the attached seeding specifications. This project has a start date of 9. Install permanent detention pond for use as a temporary riser basin during construction. A NA 701.10 18 184 0.50 0.50 4.21 ~
December, 2003 and total project completion of December, 2004. Follow details on sheet PD-1. CB3 1+16.67 707.08 706.57 701.35 N ~ N o
10. Install all storm drain structures per plans. 8 .21 C B4 22+55.99 708.25 708.27 700.18 NA NA 699.98 1 52 0.50 0.50 4 ~ ~ w
CB5 22+00.00 707.64 707.66 699.72 NA NA 699.22 24 64 0.50 0.50 5.09 ~ ~ V ~ o~
The work shall consist of furnishing labor and material, equipment and performing all operations CB6 19+40.35 707.54 707.56 698.90 NA NA 698.40 30 192 0.50 0.50 5.91 0 ~ z ~
c ssar for a com lete installation of all work as s ecified herein and as shown on the 11. Install all underground utilities. (Contractor shall schedule connections and locations of nee y p p existing utilities with appropnale utilities and agencies prior to construction). drawings. NA 697.24 30 108 0.52 0.50 6.02 ~ b ai ~ D I7 NA NA 708.50 697.44 NA
~
1. Work shall consist of installation of tem orar erosion control measures; clearin 12. Fine grade roads, parking and building pad to subgrade elevations. P Y 9 697.73 NA 696.48 30 96 0.50 0.50 5.91 ~ D18 NA NA 709.00 696.68
grubbing; stripping topsoil; roadway and general grading; controlled fill; utility ~ FROM DI7 FROM DI8A o 0
installation• re oration of sub rode; fine radin ;concrete curb and utter; avin and 13. Place concrete curb and gutter as called for on plans and backfill with clean, P P 9 g 9 9 P 9 ~o.. D 18A NA NA 706.50 NA NA NA 703.00 15 116 4.54 0.50 11.23
ermanent seedin All disturbed areas shall be left in a stabilized condition upon debris-free earth. P 9 o ~ FES9 NA NA NA NA NA NA 696.00 NA NA NA NA NA ~ ~
completion of this contract. 14. Place stone base and asphalt paving according to plans and specifications. a
2. The Contractor is expected to examine the site to familiarize himself with site all careful) read all the s ecifications and examine the 15. The Contractor shall sow seed (including fertilizer and mulch) on all exposed earth areas conditions. The Contractor sh Y P da s of the com letio a. Seed fertilizer and mulch shall CB10 5+93.33 707.37 706.86 NA NA NA 703.92 15 92 0.99 0.50 5.24
drawin s and details in order to thorou hl familiarize himself with the work to be done. within 5 y p .n of grading in that are , g g Y be of the t e called for, for either tem orar or ermanent rassin as re uired. D 111 NA NA 705.70 703.01 703.01 NA 702.76 18 72 0.50 0.50 4.21
Any work shown on the drawings or included in the specifications, or reasonably implied YP P Y p g g q FROM CB10 FROM CB13
b either shall be erformed the same as if called for b both. Contractor shall inspect seeded areas at 15 days after initial seeding and repair all bare C B 12 7+50.00 706.39 706.41 NA NA NA 703.47 15 28 0.50 0.50 3.72
y P Y areas. Non-stabilized areas shall be stabilized with erosion control blankets or other acceptable methods as approved by the Engineer. ' N
+ 706.39 706.41 703.33 NA NA 703.13 15 24 0.50 0.50 3.72 U C613 7 50.00
EARTHWORK: 16. The Contractor shall be respon~;ible for maintaining all sediment and erosion control D 114 NA NA 705.00 702.40 NA NA 702.15 24 172 0.50 0.50 5.09 I--~ O o N
1. A tem orar bench mark shall bc~ established on site. measures throughout the duration of the construction project. Maintenance shall D 115 NA NA 705.50 701.29 NA NA 701.09 24 68 0.50 0.50 5.09 o r~ I
P Y include, but not be limited to: cleanin silt out of drain structures, adding extra gravel 9 1.56 ~ D f16 NA NA 705.00 700.75 NA NA 700.25 30 68 1.91 0.50 1 , ~
The Contractor shall be thorou l~l familiar with the Erosion Control Se uence as stated or riprap; regrading swales anti washed out areas; repairing, replacing, or adding silt 2 9Y q ~ ~ O
hereafter and shall follow this se uence to insure that no off site ollution occurs Burin fence, etc., all as required. q P 9 D 117 NA NA 705.50 698.95 699.75 700.00 698.75 30 172 0.50 0.50 5.91 O ~ O
or after construction. Any deviation from this stated sequence or plans and details shall FROM D116 FROM D119 FROM Ui20 ~ ~ ~ ~ In
is En ineer and Cabarrus Count . 17. Contractor shall clean all storm drainage structures, pipes, culverts, etc, prior have prior approval of the Owne g y to final payment. FUTURE D118 NA NA 703.60 NA NA NA 701.16 15 88 0.50 0.50 3.72 ~
~ N D 119 NA NA 703.65 700.72 NA NA 700.47 18 144 0.50 0.50 4.21 s Z
18. At the end of the project construction and after the permanent ground cover is rn c ~
~ the area to be railed and stock ile on site for established, the Contractor shall remove all tem orar erosion control structures and seec 3. Top Soil: Strip all top soil from g p P Y redistribution upon completion of grading. all remaining disturbed areas. the Contractor shall remove the filter stone & wire mesh D 120 NA NA 704.00 NA NA NA 700.42 15 84 0.50 0.50 3.72 ~2., d- FUTURE ~
4. Soil Borings shall be taken in the area of the building by a certified soils engineer and and all accumulated sediment after all disturbed areas have been stabilized. NA NA 697.69 36 128 1.01 0.50 9.48 ~ I D 121 NA NA 709.50 697.89. N O.c._N
the results reported to the Owner's Engineer. This work shall be done if directed by the „ D 122 NA NA 709.00 696.40 NA NA 696.20 36 40 0.50 0.50 6.68 ~ - ~ U ~ 0
Owner's En ineer. 19. Contractor shall hold the Owner harmless from financial penalty, which could be g invoked by government authoril ,due to Contractor's negligence. NA NA NA NA NA NA 696.00 NA NA NA NA NA o o a. ~ FES23 w ~
Y 0 o ~
5. Fill Dirt shall be placed in the oleos indicated on the plan. Fill material shall be free of w D ~ 15 1 0.50 3.72 ~ ~ ~ ~
onstruction of a stable fill. SEEDING. SPECIFICATIONS brush, rubbish, and other material that will be detrimental to c D 124 NA NA 703.75 NA NA NA 699.89 16 0.50 Q a ~ ~
All fill shall be compacted to a minimum of 95~ Standard Proctor with proper moisture D 125 NA NA 701.75 699.31 NA NA 699.11 15 100 0.50 0.50 3.72 w ~ ~ ~
control. Maximum thickness of la ers of fill to be tom acted shall not exceed 8". No SLOPES 3:1 or FLATTER Y P slopes shall be greater than 2: I. The entire sub-grade after compaction shall be smooth D 126 NA NA 701.75 698.61 698.61 NA 697.86 24 256 0.59 0.50 5.51 a
slo e. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. { and uniform p 2. A I 10-10-10 commercial fertilizer at the rote of 20 Ib 1000 sf. F FUTURE FROM D125 FROM DI27
PP Y I 72
Material to be excavated is assumed to be earth and other materials that can be 3. Seed in accordance with the following schedule and application rate: 6. Cut D 127 NA NA 703.75 NA NA NA 699.19 15 116 0.54 0.50 3. ~
removed by power-shovel, bulld~~zer, motorized pan, or normal excavating equipment; D 128 NA NA 707.50 696.36 NA NA 696.16 24 32 0.50 0.50 5.09
t not re uirin the use of ex ?losives or drills. If rock as defined herein is DATE TYPE PLANTING RATE bu q g f ( ) FES29 NA NA NA NA NA NA 696.00 NA NA NA NA NA H
encountered within the limits o1 excavation, the Contract Sum will be adjusted in t^i
"Chan es in the Work" of the "Conditions of the Aug 15 -Nov 1 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf compliance with provisions for g
Contract". When rock is encountered, Contractor shall notify the Engineer immediately; * ntil instructions are even and measurements made for Nov 1 Mar 1 Tall Fey:cue and 200 Ib/ac or 7 Ib/1000 sf and shall not proceed further u 9 Abru~ ~ 25 Ib ac or 1 2 Ib 1000 sf R131 NA NA 706.00 NA NA NA 688.00 18 80 2.50 1.00 9.40
me of rock and the value of excavatin same. zi Rye / / / the purpose of establishing volu g J632 NA NA 701.94 686.00 NA NA 685.80 18 456 2.54 1.00 9.49
Rock is defined hereby as that material which cannot be ripped by acrawler-tractor J633 NA NA 704.00 674.20 NA NA 674.00 18 100 1.00 1.00 5.95 W
bs. drawbar ull at one mile er hour ullin a sin le- Mar 1 -Apr 15 Tall fescue 200 Ib/ac or 7 Ib/1000 sf rated at a minimum of 50,000 I P P p 9 9 FES34 NA NA NA NA NA NA 673.00 NA NA NA NA NA F--i
tooth ripper. Equipment shall be in good repair, and shall be in proper working - Apr 15 Jul 30 Hulled Common or Bermuda 30 Ib/ac or 1 Ib/1000 sf ~a~ NOTE: ALL STORM DRAIN PIPE TO BE RCP, UNLESS OTHERWISE NOTED.
condition. U
Rock is further defined hereby ns boulders larger than 1/2 cubic yard in size. _ . _ . _ _ _ _ _ A _ . W di
it- rice for rock unless minimum-sized Jul 15 -Aug 15 Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf No payment will be made on the basis of un p i d hereinbefore. Brown Millet or 35 Ib/ac or 7/8 Ib/1000 sf w
equipment or better is utilized as requ re erial b drillin blastin or wed in Sorghum-Sudan Hybrids 30 Ib/ac or 3/4 Ib/1000 sf Rock work is defined hereby as removal of mat y g, g g g _ _ _ _ _ A U1
Rock shall be stripped for measurement before excavating, and no rock excavated or TEMP. RISER BASIN DATA L3 Z .
* Heavily mulched during January -March period. Coat applied at the rate of 5-7 gal/1000 sf loosened before measurement will be allowed or paid for as rock. Measurement and SED. SED. SED. t~
number of cubic arils re uired. to brin the excavation or 200-300 gal/ac. payment, therefore, shall be by y q g a RISER DRAIN. DISTR. MIN. REQ. MIN. REQ. STORAG STORAGE STORAGE WEIR TOP TOP ROT. ROT. ROT. ~
to the required surface or grade as required by the Contract Documents. The Owner o w R E RF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGT BASIN ~ BASIN AREA AREA STO AG SU
ck e encountered. 4. Mulch with straw applied at the rate of 75-100 Ib/1000 sf. and anchor with asphalt emulsion may adjust the grades should excessive ro b tack coat applied at the rate of 5-7 gal/1000 sf or 200-300 gal/ac. NUMBE ACRES ACRES (CF) (SF) (FT) (FT) (FT) (FT) (FT) (FT) (FT) (FT) ELEV.
t ) t ) O E-~
1 5.55 5.55 9990 9042 1.0 73 146 10 81 154 69 142 672.00
CIFICATIONS SLOPES GREATER THAN 3:1 TO 2:1 EROSION CONTROL SP 202 15 128 229 97 198 690.00 ~ 2 10.87 10.87 19566 17709 1.0 101 w
I to all work in this section. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. Requirements of the Contract Documents app y :Desi n Requirements: Freeboard 2 00 Feet, _ _ _ _ _ _ _ ~ 9 _ ~i
2. Apply 10-10-10 commercial fertilizer at the rate of 20 Ib/1000 sf. i 6.80 ir>thr ~ w 10 Yr Storm Intens y _ , . _ Z
3. Seed in accordance with the following schedule and application rate. ei ht Above Sed. Stora a 1.00 Feet _ ~ _,RlserH 9 .
GENERAL: Provide the work of this section for erosion and sediment control as indicated and DATE TYPE PLANTING RATE I ER BASINS TO BE CONSTRUCTED AS PER DETAIL 30.01 _ ' ~ ALL TEMPORARYR S
specified as follows:
Construction entrance; Sediment basins; drainage structures; inlet protection; Mar 1 -Jun 1 Sericea Lespediza (scarified) & 50 Ib/ac or 11 Ib/1000 sf ' PERMANENT POND AS TEMP. RISER BASIN DATA Mai
silt fence; filter cloth and riprap outfall protection, and permanent seeding. SED, SED. SED.
Mar -Apr Add Tall Fescue or 150 Ib/ac or 3-1/2 Ib/1000 sf T. ROT. ROT. DRAIN. DISTR. MIN. REQ. MIN. REQ. STORAG STORAGE STORAGE WEIR TOP TOP BO
s stem of Mar -Jun Add Weeping Lovegrass 5 Ib/ac or 1/8 Ib/1000 sf CONTRACTORS RESPONSIBILITY: The Contractor shall furnish the Owner a y PERM. AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGT BASIN
temporary controls to minimize soil sediment erosion during the construction period caused by Jun -Sep 1** German Millet or 40 Ib/ac or 1 Ib/1000 sf ACRES ACRES CF SF FT FT (FT) (FT) (FT) (FT) (FT) (FT) ELEV. POND t ) t ) ( ) t ) t I ( ) W
storm water runoff. Work shall be performed as called for on the drawings and as site Small-Stemmed Sudan Grass 50 Ib/ac or 1.2 Ib/1000 sf 1 3.38 3.38 6084 5507 1.0 58 116 10 66 124 54 112 688.00
conditions warrant. .:Desi nRe uirements: Freeboard 2,00 Feet 9 _q. _ _ . _ ~
Sep -Mar 1 Sericea Lespediza 70 Ib/ac or 1-3/4 Ib/1000 sf 10 Yr Storm Intensi},~' 6.80 irtlhr N,~ `7 p,L ~ ,
(unhulled-unscarified) 150 Ib/ac or 3-1/2 Ib/1000 sf . •y Riser Height Above Sed. Storage 1.00 Feet ~ ~ ' .o ~
OWNERS RESPONSIBILITY: After the acceptance, it is the Owners responsibility to properly rk. Tall Fescue maintain the wo SPERM E ~ ANENT POND TO BE CONSTRUCTED PER DETAILS & SPECIFICATIONS ON SHEET PD-1
Millet or Sudan 20 Ib/ac or 1/2 Ib/1000 sf _ ~w z ,
_ . _ . . ~ ; 4 o RIP'RAPOUTFA~~PROTECTIONDATA ~
Temporary -Reseed September 1 at recommended rates. EROS{ON AND SEDIMENT CONTROL: The Contractor shall provide erosion and sediment DStY La W Pie W End Dmax Thickness 0 ~P,~`
control during the period of construction of this project. The Contractor shall protect and 5 WASHED STONE STRUC. DO Q ~ h i~ ( 1THICK x 3' HIGH MIN CLASS I RIP RAP LD. Inches CFS Inches Feet Feet Feet Inches Inches '~~u ,li,,,r~` O
~ nt control structures which rovide tem orar 4. Mulch with 3" straw applied at the rate of 50-90 Ib/1000 sf and anchor with asphalt ~ maintain the temporary erosion and sedime p p y o emulsion tack coat applied at the rate of 5-7 gal/1000 sf or 200-300 gal/ac. ~D ~ FES9 30 27 6 16 8 19 9 14 w ( ~~i ~
sediment pollution control, as shown on the drawings. The Contractor shall protect and 1 16 ~ FES23 36 32 7 20 9 23 11 ~ REVISIONS BY
~ maintain the tem orar facilities as necessary to trap soil erosion and sediment pollution created ~ P Y ~ by storm water runoff. Maintenance of these facilities shall include, but not be limited to, \ ~ FES29 24 12 5 13 6 15 8 11
o re radin and filling of washed out areas, adding erosion control blankets, adding silt fences 9 9 PIPE FES34 18 31 12 22 5 24 18 27 REVISED STDRM A!~ aF.~INC ~ snE t~LL,w JMY
and riprap, and reseeding and mulching of the swales during the construction period if deemed . ALL RIPRAP OUTFACE PROTECTION AS PER DETAIL 20.55. _ A purnt;es ~2/ao/oa _ _ .
a necessar b the Owner, Owner's En ineer, or Cabarrus County (Thomas Smith 704-920-2887). Y Y g . ~ - ~ w:r~^°_.': ~ ~ RE'NSED STDItN DRAIN dt a.: w::. Y x.:.._ . B ~ ~ ~cow0 AND JMY
/ GRAVEL i~ RIP RAP FILTER BERM BASIN DATA: /t /04
~ / ~ DRAIN. DISTR. MIN. REQ. MIN. REQ.
N o EROSION CONTROL SEQUENCE: The following sequence of construction shall be staged as ~ / - GRRFB AREA AREA STORAGE SURF. AREA I _ .
~ METAL "T" POST required to provide acceptable erosion and sediment control. WIRE FABRIC #5 WASHED STONE ~ ~ ~ BASIN ACRES ACRES) (CFI (SF) (II III \ ( ) ( _ _ ~,o I
#5 WASHED STONE WW f~ABRIC SEDIMENT STORAGE AREA 1 226 2.26 4068 3682 . . GRAVEL & R~ RAP FILTER BERM BASIN PER DETAIL ONSHEET GR-2
1. Contractor shall arrange apre-construction meeting with the Owner, the Owner s PERSPECTIVE VIEW _ . _ _
3 Engineer, and a representative from Cabarrus County (Thomas Smith 704-920-2887) z
N prior to any land disturbing activity. ~ ~ N A ~5 WASHED STONE 2, CLASS I RIP RAP
~ 12" MIN. INLE GENERAL NorES: xNFRAI NnTEc: SEDIMENT STORAGE ZON 1' FlNISH GRADE
2. Install construction entrance which shall receive a minimum of 6" depth of 2"-3" coarse 3 1. GRAVEL AND RIP Po I. GRAVEL AND RIP RAP FlLTER BERM BASIN SHOULD BE USED TO PROTECT EXISTING PIPE STORMWATER STORAGE ZONE Date: 1 2 0903 INVERTS THAT ORNN 10 ACRES OR LESS.
aggregate in loose measurement at the location shown on sheet GR-1. Any sediment z iNVERrs twat oRAil DIMENSIONS SHOWN ARE THE MINIMUM ACCEPTED UNLESS OTHERWISE NOTED.
~ ad'acent ublic roads as a result of this ro'ect and traffic ~ 2. DIMENSIONS SHOWN ~ accumulation on f p p scow 1 "=100' Hor. I Scale: N A
Q from this project shall be immediate+y cleaned off by the Contractor. " GRADE u~ ih PIPE Drawn:
Q (Minimum Stabilized Construction Entrance Length = 100' as per detail 30.11.) n
c7 A LMAX. SEDIMENT DEPTH Checked: DLM
3. Install temporary silt fence where indicated on sheet GR-1. Protect all existing INLET STRUCTURE POST w (CLEAN OUT POINT) SECTION
m storm drain structures with wire fabric inlet protection per detail on this sheet. PLAN VIEW SECTION A-A Job: 03_07_06
m 4. Install temporary riser basins.
WIRE FABRIC INLET PROTECTION M GRAVEL & RIP RAP FILTER BERM BASIN Sheet
CA NO SCALE NO SCALE (DETAIL 30.12) GR-2
0 N O JAN 15 2004 B 1 14.04
L
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT EDMONT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: 0 3 Sheet

NAR A VE:
STORM DRAIN DATA: a~
Ryan Companies US, Inc. is building a racing facility for Ganassi Racing on 6. Clear vegetation and grub stumps from all areas to be graded. INLET
approximately 22.20 acres located off proposed Westmoreland Drive. The scope of work will involve clearing, grubbing, grading, storm drains, aggrgrate base, paving, building 7. Strip topsoil and stockpile on site for redistribution upon completion of grading. o0
construction, water, sanitary sewer and associated utilities. Disturbed areas will be STRUC. ROAD C.L. OR T.C. INVERT INVERT INVERT INVERT PIPE PIPE PIPE MIN. FULL FLOW M"~ Q ~ ~ ~
protected by a riser basins, silt fence, temporary diversion swales, top of slope berms 8. Install temporary diversion swales as indicated on sheet GR-1 to divert water and LD. STATION ELEV ELEV IN #1 IN #2 IN #3 OUT SIZE LENGTH SLOPE SLOPE VELOCITY
and wire fabric inlet protection. Total disturbed area is estimated to be 22.06 acres. sediment into erosion control measures. 15 28 0.50 0.50 3.72 00'0 C B 1 0+56.40 705.03 705.01 NA NA NA 702.07 0. ~ ~ rn N
Upon completion of construction all disturbed areas shall be permanently stabilized with NA NA 701.73 15 76 0.50 0.50 3.72 ~ ~ ~ C 62 0+56.40 705.03 705.01 701.93 w ~ o
grass as per the attached seeding specifications. This project has a start date of 9. Install permanent detention pond for use as a temporary riser basin during construction. December, 2003 and total project completion of December, 2004. Follow details on sheet PD-1. + NA NA 701.10 18 184 0.50 0.50 4.21 ~ ~
CB3 1 16.67 707.08 706.57 701.35 v N o
10. Install all storm drain structures per plans. CB4 22+55.99 708.25 708.27 700.18 NA NA 699.98 18 52 0.50 0.50 4.21 ~U ~ ~ w
C B5 22+00.00 707.64 707.66 699.72 NA NA 699.22 24 64 0.50 0.50 5.09 ~ ~ ~ V ~ o 00
The work shall consist of furnishing labor and material, equipment and performing all operations installation of all work as s ecified herein and as shown on the 11. Install all underground utilities. (Contractor shall schedule connections and locations of necessary for a complete P ilities with a ro riate utiliti rior to construction . CB6 19+40.35 707.54 707.56 698.90 NA NA 698.40 30 192 0.50 0.50 5.91 ~ ~ z ~
existing ut pp p es and agencies p ) drawings. NA NA 697.24 30 108 0.52 0.50 6.02 ~ ~ ~ ~ D 17 NA NA 708.50 697.44
~ 7.73 NA 696.48 30 96 0.50 0.50 5.91 ~
1. Work shall consist of installation of tem orar erosion control measures; clearin ; 12. Fine grade roads, parking and building pad to subgrade elevations. P Y 9 D 18 NA NA 709.00 696.68 69 v~
grubbing; stripping topsoil; roadway and general grading; controlled fill; utility FROM DI7 FROM DI8A o~ ~o
installation• re oration of sub rade• fine radin ;concrete curb and utter; avin and 13. Place concrete curb and gutter as called for on plans and backfill with clean, ' p p g g g g P g debris-free earth. D 18A NA NA 706.50 NA NA NA 703.00 15 116 4.54 0.50 11.23 ~ M-+ o ~ ~
permanent seeding. All disturbed areas shall be left in a stabilized condition upon FES9 NA NA NA NA NA NA 696.00 NA NA NA NA NA ~
completion of this contract. 14. Place stone base and asphalt paving according to plans and specifications. a
2. The Contractor is expected to examine the site to familiarize himself with site
'ins. The Contractor shall careful) read all the s ecifications and examine the 15. The Contractor shall sow seed (including fertilizer and mulch) on all exposed earth areas Condit o Y p within 5 da of the com letion of radin in that area. Seed fertilizer and mulch shall 10 5+93.33 707.37 706.86 NA NA NA 703.92 15 92 0.99 0.50 5.24 CB
drawings and details in order to thoroughly familiarize himself with the work to be done. ~ P g g D 111 NA NA 705.70 703.01 703.01 NA 702.76 18 72 0.50 0.50 4.21
An work shown on the drawin s or included in the s ecifications, or reasonabl im lied be of the type called for, for either temporary or permanent grassing as required. Y g P Y P Contractor shall ins ect seeded areas at 15 da s after initial seedin and re air all bare FROM CB10 FROM CB13
by either, shall be performed the same as if called for by both. P Y g p areas. Non-stabilized areas shall be stabilized with erosion control blankets or other C B 12 7+50.00 706.39 706.41 NA NA NA 703.47 15 28 0.50 0.50 3.72
acceptable methods as approved by the Engineer. ' N + 6 39 706.41 703.33 NA NA 703.13 15 24 0.50 0.50 3.72 O
C 613 7 50.00 70 .
EARTHWORK: 16. The Contractor shall be responsible for maintaining all sediment and erosion control 4 NA NA 705.00 702.40 NA NA 702.15 24 172 0.50 0.50 5.09 I---I O D11 N
1. A tem orar bench mark shall be established on site. measures throughout the duration of the construction project. Maintenance shall D 115 NA NA 705.50 701.29 NA NA 701.09 24 68 0.50 0.50 5.09 o r7
P Y include, but not be limited to: cleanin silt out of drain structures, adding extra gravel 9 11.56 ~ D 116 NA NA 705.00 700.75 NA NA 700.25 30 68 1.91 0.50 , ~ ~ ~ O
2. The Contractor shall be thorou hl familiar with the Erosion Control Se uence as stated or riprap; regrading swales and washed out areas; repairing, replacing, or adding silt g Y q fence etc. all as re uired. O
hereafter and shall follow this sequence to insure that no off site pollution occurs during ~ ~ q D 117 NA NA 705.50 698.95 699.75 700.00 698.75 30 172 0.50 0.50 5.91 O ~ O
or after construction. Any deviation from this stated sequence or plans and details shall 17. Contractor shall clean all storm draina e structures i es culverts, etc. rior FROM D116 FROM D119 FROM Di20 „ ~ ~
have rior a royal of the Owner's En ineer and Cabarrus County. g P P P P PP g to final payment. FUTL FUTURE D 118 NA NA 703.60 NA NA NA 701.16 15 88 0.50 0.50 3.72 • r-+ ~ I
18. At the end of the project construction and after the permanent ground cover is ~ N D 119 NA NA 703.65 700.72 NA NA 700.47 18 144 0.50 0.50 4.21 s Z
3. Top Soil: Strip all top soil from the area to be graded and stockpile on site for established, the Contractor shall remove all temporary erosion control structures and seec FUTL ~ ~ o~ .72 c ~ FUTURE D 120 NA NA 704.00 NA NA NA 700.42 15 84 0.50 0.50 3 a ~
redistribution upon completion of grading. all remaining disturbed areas. The Contractor shall remove the filter stone & wire mesh a~
4. Soil Borings shall be taken in the area of the building by a certified soils engineer and and all accumulated sediment after all disturbed areas have been stabilized. 697.89. NA NA 697.69 36 128 1.01. 0.50 9.48 D 121 NA NA 709.50 ~ .N N
the results reported to the Owner's Engineer. This work shall be done if directed by the „ NA NA 709.00 696.40 NA NA 696.20 36 40 0.50 0.50 6.68 O - r. D122 ~ ~ ~ U t0
Owner's En ineer. 19. Contractor shall hold the Owner harmless from financial penalty, which could be g invoked by government authority, due to Contractors negligence. FES23 NA NA NA NA NA NA 696.00 NA NA NA NA NA o o a ~ 0
o ~
5. Fill Dirt shall be placed in the areas indicated on the plan, Fill material shall be free of w p N 699.89 15 116 0.50 0.50 3.72 ~ ~ ~ ~
will be detrimental to construction of a stable fill. SEEDING SPECIFICATIONS brush, rubbish, and other material that All fill shall be compacted to a minimum of 95~ Standard Proctor with proper moisture D 124 NA NA 703.75 NA NA NA Q a ~ C
control. Maximum thickness of la ers of fill to be com acted shall not exceed 8". No SLOPES 3:1 or FLATTER Y P D125 NA NA 701.75 699.31 NA NA 699.11 15 100 0.50 0.50 3.72 w ~ ~ ~
slopes shall be greater than 2:1. The entire sub-grade after compaction shall be smooth D 126 NA NA 701.75 698.61 698.61 NA 697.86 24 256 0.59 0.50 5.51 «Z
nil uniform slo e. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. _ a P 2. A I 10-10-10 commercial fertilizer at the rate of 20 Ib 1000 sf. FUTU FUTURE FROM DI25 FROM DI27
PP Y / 2 Dpl NA NA 703.75 NA NA NA 699.19 15 116 0.50 0.50 3.7 ~
6. Cut Material to be excavated is assumed to be earth and other materials that can be 3. Seed in accordance with the following schedule and application rate:
removed by power-shovel, bulldozer, motorized pan, or normal excavating equipment; D 128 NA NA 707.50 696.36 NA NA 696.16 24 32 0.50 0.50 5.09
but not re uirin the use of ex losives or drills. If rock as defined herein is DATE TYPE PLANTING RATE q g P ( ) FES29 NA NA NA NA NA NA 696.00 NA NA NA NA NA H
encountered within the limits of excavation, the Contract Sum will be adjusted in " es in the Work" of the "Conditions of the Aug 15 -Nov 1 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf compliance with provisions for Chang H
Contract". When rock is encountered, Contractor shall notify the Engineer immediately; RI31 NA NA 706.00 NA NA NA 688.00 18 80 2.50 1.00 9.40
tructions are iven and measurements made for Nov 1 -Mar 1* Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf and shall not proceed further until ins g
frock and the value of excavotin same. Abruzzi Rye 25 Ib/ac or 1/2 Ib/1000 sf the purpose of establishing volume o g JB32 NA NA 701.94 686.00 NA NA 685.80 18 456 2.54 1.00 9.49
Rock is defined hereby as that material which cannot be ripped by acrawler-tractor J633 NA NA 704.00 674.20 NA NA 674.00 18 100 1.00 1.00 5.95 W
wbar ull at one mile er hour ullin a sin le- Mar 1 -Apr 15 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf rated at a minimum of 50,000 lbs. dra p p p g g NA NA NA NA 673.00 NA NA NA NA NA w r-~ FES34 NA NA
tooth ripper. Equipment sha11 be in good repair, and shall be in proper working Apr 15 -Jul 30 Hulled Common or Bermuda 30 Ib/ac or 1 Ib/1000 sf ~a~ NOTE: ALL STORM,DRA~V PPE TO BE RCP,UNLESS OTHERWISE. NOTED. _ ) ~ _ _ _ . ~ ~ Q'i
condition. Rock is further defined hereby as boulders larger than 1/2 cubic yard in size. U ~ d
of unit- rice for rock unless minimum-sized Jul 15 -Aug 15 Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf No payment will be made on the basis p A
fired hereinbefore. Brown Millet or 35 Ib/ac or 7/8 Ib/1000 sf equipment or better is utilized as requ w
I of material b drillin blastin or wed in . Sorghum-Sudan Hybrids 30 Ib/ac or 3/4 Ib/1000 sf Rock work Is defined hereby as remova y g, g g g TEMP. RISER BASIN DATA i;.~
Rock shall be stripped for measurement before excavating, and no rock excavated or . .
rem nt and * Heavily mulched during January -March period. Coat applied at the rate of 5-7 gal/1000 sf loosened before measurement will be allowed or paid for as rock. Measu e SED. SED. SED.
I e b number of cubic arils re uired to brin the excavation or 200-300 gal/ac. payment, therefore, shat b y y q g RISER DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAGE STORAGE STORAGE WEIR TOP TOP BOT. BOT. BOT. ~
to the required surface or grade as required by the Contract Documents. The Owner x five rock be encountered. 4. Mulch with straw applied at the rate of 75-100 Ib/1000 sf. and anchor with asphalt emulsion ~ w BASIN AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGT BASIN
may adjust the grades should e cess tack coat applied at the rate of 5-7 gal/1000 sf or 200-300 gal/ac. ELEV. NUMBE (ACRES} (ACRES) (CF) (SF) (FT) (FT) (FT) (FT) (FT) (FT) (FT) (FT)
E-~ 1 5.55 5.55 9990 9042 1.0 73 146 10 81 154 69 142 672.00
ONTROL SPECIFICATIONS SLOPES GREATER THAN 3:1 TO 2:1 EROSION C 17709 1.0 101 202 15 128 229 97 198 690.00 ~ 2 10.87 10.87 19566
w .0 Feet
ments a I to all work in this section. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. Requirements of the Contract Docu pp y 2. Apply 10-10-10 commercial fertilizer at the rate of 20 Ib/1000 sf. :Design Regwrements: Freeboard 2 0 _ _ VJ _ _ _
3. Seed in accordance with the following schedule and application rate. r>tensi 6.80 iNhr w 10 Yr Starm _ _ Z
iser Hei htAbove Sed. Stor a 1.00 Feet R 9 9 _ _ . . .
GENERAL: Provide the work of this section for erosion and sediment control as indicated and DATE TYPE PLANTING RATE ALL TEMPORARYRISER BASINS TO BE CONSTRUCTED AS PER DETAIL 30.01 _ _ _ ! ~
specified as follows: Construction entrance; Sediment basins; drainage structures; inlet protection; _ _ _ o
rmanent seedin Mar 1 -Jun 1 Seriaea Lespediza (scarified) & 50 Ib/ac or 11 Ib/1000 sf silt fence; filter cloth and riprap outfall protection, and pe g PERMANENT POND AS TEMP. RISER BASIN DATA H
SED. SED. SED.
Mar -Apr Add Tall Fescue or 150 Ib/ac or 3-1/2 Ib/1000 sf T RAGE STORAGE WEIR TOP TOP BOT. BOT. BOT. DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAG S 0
PERM. AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGT BASIN
the Owner a s stem of Mar -Jun Add Weeping Lovegrass 5 Ib/ac or 1/8 Ib/1000 sf CONTRACTORS RESPONSIBILITY: The Contractor shall furnish y D ACRES ACRES CF SF FT FT FT FT FT FT (FT} (FT) ELEV. PON ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )
temporary controls to minimize soil sediment erosion during the construction period caused by drawin s and as site Jun -Sep 1** German Millet or 40 Ib/ac or 1 Ib/1000 sf
storm water runoff. Work shall be performed as calved for on the g Small-Stemmed Sudan Grass 50 Ib/ac or 1.2 Ib/1000 sf conditions warrant. 1 3.38 3.38 6084 5507 1.0 58 116 10 66 124 54 112 688.00
Desi n Re uirements: Freeboard 2.00 Feet _ _ . _ 9 q _ _ , P ~
Sep -Mar 1 Sericea Lespediza 70 Ib/ac or 1-3/4 Ib/1000 sf 10 Yr Storm tens ty ~ „ , i 6.80 iNhr ~ „ , N ~P~ '
(unhulled-unscarified) 150 Ib/ac or 3-1/2 Ib/1000 sf OWNER S RESPONSIBILITY: After the acceptance, it is the Owners responsibility to properly er Hel ht Above Sed. Stor a 1.00 Feet ~ ~ _Rls 9 _ 9 _ _ _ _ _ _ _ :o ~.,y - _ J
'n the work. Tall Fescue maintai Millet or Sudan 20 Ib ac or 1 2 Ib 1000 sf ~ 'PERMANENT POND TO BE CONSTRUCTED PER DETAILS & SPECIFICATIONS ON SHEET PD-1
/ / / ;w /w ~ ~ z _ _ ,
o ! RIP RAP OUTFACE PROTECTION DATA
NT CONTROL: The Contractor shall rovide erosion and sediment Temporary -Reseed September 1 at recommended rates. EROSION AND SEDIME p , P ~ Thickness 60~~''d 5 WASHED STONE STRUC. Do Q D50 La W~Pipe W~End Dmax , ~ ' Jp
control during the period of construction of this project. The Contractor shall protect and ~ nil sediment control structures which rovide tem orar 4. Mulch with 3" straw applied at the rate of 50-90 Ib/1000 sf and anchor with asphalt 1'THICK x a' HIGH MIN CIASS I RIP RAP LD. Inches CFS Inches Feet Feet Feet Inches Inches , , t ) II
o maintain the temporary erosion a p p Y emulsion tack coat a lied at the rate of 5-7 al 1000 sf or 200-300 al ac. rotect and PP g / g / ~Dw ~ sediment pollution control, as shown an the drawings. The Contractor shall p ~ ~iD ~ ~ FES9 30 27 6 16 8 19 9 14 w ( ll~ ~ ~
m maintain the tem orar facilities as necessary to trap soil erosion and sediment pollution created L P Y ~ ES23 36 32 7 20 9 23 11 16 F
~ by storm water runoff. Maintenance of these facilities shall include, but not be limited to, 24 12 5 13 6 15 8 11 REVISIONS BY \ ~ FES29 - PIPE FES34 18 31 12 22 5 24 18 27
o re radin and filling of washed out areas, adding erosion control blankets, adding silt fences 9 9 RENSED STOIiLI AND - _ CLEANING PEN 9nE PLAN Jf~iY
and riprap, and reseeding and mulching of the swales during the construction period if deemed • " ALL RIPRAP OUTFACE PROTECTION AS PER DETAIL 20.55. _ _ A cNAnc;es ~~roy /
a necessar b the Owner, Owner's En ineer, or Cabarrus County (Thomas Smith 704-920-2887). Y Y g _ . - REVISED STddt DRAIN s •f~..: ..:a~, _ PDND PER NCDIMQ AND JMY
v / GRAVEL & RIP RAP FILTER BERM BASSI DATA: B RrAN prc, ~~4/G4
N ~ / ~ DRAIN. DISTB. MIN. REQ. MIN. REQ. ~ ~ ~ GRRFB AREA AREA STORAGE SURF. AREA
EROSION CONTROL SEQUENCE: The following sequence of construction shall be staged as I ~ ~ ~ BASIN CRES ACRES CF 5F
° METAL "T" POST N required to provide acceptable erosion and sediment control. WIRE FABRIC #5 WASHED STONE III~II~ \ ~ It? tl ~,,a _ _ _ SEDIMENT STORAGE AREA 1 226 2.26 4068 3682
~ 5 WASHED STONE ~ # wW f ABRIC GRAVEL & RIP RAP FILTER BERM BASIN PER DETAIL ONSHEET GR-2
1. Contractor shall arrange apre-construction meeting with the Owner, the Owner's m PERSPECTIVE VIEW _ _ _ _ _ _
3 Engineer, and a representative from Cabarrus County (Thomas Smith 704-920-2887) z #5 WASHED STONE
N prior to any land disturbing activity. ~ ~ N A ~ 12" MIN. INLE 2, CLASS I RIP RAP
SEDIMENT STORAGE ZONE 1' flNISH GRADE
2. Install construction entrance which shall receive a minimum of 6" depth of 2"-3" coarse 1. GRAVEL AND~RIP RAP FlLTER BI ~ n sheet GR-1. An sediment Z INVERTS THAT DRAIN 10 ACRES ID RIP RAP FlLTER BERM BASIN SHOULD BE USED TO PROTECT IXISTING PIPE STORMWATER STORAGE ZONE Date: 1209/03 HAT ORNN 10 ACRES OR LESS.
aggregate in loose measurement at the location shown o y _ ~ accumulation on ad'acent ublic roads as a result of this ro'ect and traffic ~ 2. DIMENSIONS SHO'NN ARE THE M S SHOWN ARE THE MINIMUM ACCEPTED UNLESS OTHERWISE NOTED. Fcaw 1 "=100' Hor.
N ~ p P J ¢ from this project shall be immediately cleaned off by the Contractor. " GRADE I Scale: N A u~ i~
Q Minimum Stabilized Construction Entrance Len th = 100' as per detail 30.11.} PIPE Drawn:
ra ( g PIP
L MAX. SEDIMENT DEPTH Checked: DLM
3. Install temporary silt fence where indicated on sheet GR-1. Protect all existing INLET STRUCTURE POST W storm drain structures with wire fabric inlet protection per detail on this sheet. PLAN VIEW (CLEAN OUT POINT) SECTION
SECTION A-A Job: 03-07-06
4. Install temporary riser basins.
WIRE FABRIC INLET PROTECTION ce) GRAVEL & RIP RAP FILTER BERM BASIN Sheet NO SCALE (DETAIL 30.12)
NO SCALE U CLAN 15 2004 GR-2
N Q L B 1 /14/04
a OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF' PIEDMONT DESK ?NT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: 0 3 Sheet
Location: PR-20 PUBLICATION OR REUSE
J
U

9Pdrkagt6 arrddtptn-Keep the spillway war~leasc4 itlatgandsiudm . ' f}ewatering _
Emergency spillway mass t~ peat ttisi~sge of Ole layt slam (Izigure fi64a), A ntaximaa flow of o.5 sad maximsn sine s of 2:1 Pipe OuNet to Flat Area- Pipe OuNet to Weli•defined depot a<1 fL a mirtmxun Ga6amd R. No Well•detined Channel Channel Weli•defm®d Concretel~oCk
Riser pipe for principal ae recaavikttdM. Wee tengdt may be seietxrd 5om'lbbk b.60a da,vn f~ Tnel - ~ Excaaated area(asregwred} iH Q ~
spitlway ~ taowsiteTaatitrds iaNTordtCartd'me. • t` ti ~ ~
Trash rack _ Freeboard • 1' min ~ .;~,c•;a~r ~ Tablefi.60a !an s o A A N Side slope 2:1 , , { cd ~ ~
~ Destgn of SpiOways Dr'1na9e AT0/ wek ~ m =1 'y•f ' Accumulated • ~ ~ ~ • r sediment i1 ~ m
- p EmbaltkmeM stabilized t 4.0 ~
Drainage taoles ~ ~ _ - with etatian 2 two , ~ ~ 3 &0 with gravel p ! l t 4 10,0 ptlI ~ Gravel-supported by W O Excavated de ~ . to ~IIif=N~~.
2.5;1 sk:pe m 5 120 -._._..r,,, _ mint • --max z' lq-- dewatedng ? q "I{ ll` Hardware claUr to allow ~ ~ t a N 0 ---r below fop of inlet ~I { t drainage and rests ,t ~
Plan ~Oimertsione shown era minimum Pfau ti _ sedirfleni moveme ~ ~ „v ~
t:1 ATdt.seep Anti tt collar _ ~ err ~;.4"~
Selected fill flotation placed in Payers Principal Stabilized ~1 sbpe, gravel filter ~ ~ 000
block and compacted spillway Cut-0tf trench, outlet 5 ft i ~,la- I~_ 0 ~z~ ~
barrel 2' deep It ~ wll~ la ~ min • ~ a ~
h i.slt 3ectionAA Fitter 1800 cu ftt acre blanket
~ 5 tt max ia; Te sediment ~ Flow ~\\\~,t`'i.~ Flaw ~ ai mf~~Y wre screen ©ewaiering ; , yid O a pool ~ o
Noies ~ Section AA t
h . 'sWt. ~ .'AWL. ---r,. ~ yt~~~~.%~ /'•.,~,~i~,.~/ ~ ~ ~ ~
Fdarra~ t. La is the lengtlr of the riprap F Cross section apron. b Flier i min _ i8" i%~~w"'~~ ~ ~ ~ blanket 2' max _ i~s;~/ ~ ~ f~
2. d=1.5 times the maximum .x it;.~ ~ ~
stone diameter but not less opt s• than 6°. ..~liJllt: \ ~ ,:a: iko inlet / p, ~ ~ ~ .y... P ~f f~ \ Flow
~ min ~ j for setttemerd 3. In swell-defined ehannet ex- Sediment - with grata ~,i% Flow ~
tend tfte spree Ilp thechannel pOws 8.32a Blodrand ~arddrep iYetpmlac5as. ,
U - t It 4ftmin , lam8t elev ' i.sn •a banks to an atron of 8" Z 1 i~2a side E,,,ay above the maximum tdilwater temp«ary sediment pot VYire mean
s a soya max by-pale depth at0 the tap Of the bank, max ~ Ptuer e' whichever iS foss. loptianal) N
• taWic „ ti t1 side stops f sealed top - max ~ 4. A filter blanket or filter fabric U
should be installed between t' min xi slope , ~t slope H ~ mast 1...{ Q
~n tfteriprapandsoNfoundation. --1 _ ~ O
. Strne section Firtegravef -I ll~. II b' M •b' lace i ~ min ih= 3" ii i ~ ,,a E v'~ i
l~+aatal'emporary sedirnadtrap. ~,OflStrUCtlon L Easme Ihat the sub fa the fate aad' ' foHovn the lines CoflStrUCtit)n 1. Site ptepratiotta-Ckm. gn~~ and tip topsoil finan areas ender the em- tnitaaiess) stone ii ~b""- O e die required litres
Specifications matt,n~n,~ia,ana~rrabtkm~at;al. Specifications ~~s~~~n~.ftanY~m~~mt~ Tv fact'h'~e sedimem cleanqu and reworsian, ckuthe pool areatof allbtusb, Construetiofl L Clear, gtttb, ami wrip the aRa imda theembaelonatt of au vegetation and detainr arras stsrrouttdbtg midi xtubed materiel, Low in the subgalk at the sn6grade to the ~ -F'' O
trcea,aodou~erobjestioeabkmat~s.slxtpibanmpso~lotsoa~aiaing S eci~ICaiions "~1°~'~'~Ce~`~O~"~~`~txgpnumaner mdsturbedsot~Rreyalsoberacdhr;aapsmgthetipral,tb;datess, indre astbOrarald~op6rett~~~{ar++~f• Q@Si nCnt$fia Lireitfie~iaa anatolxre,Keeptbeminimumdeprbatitt>ndthemax• ~ su6gade ar Flows ~ ge ~ In t6iCtOrtSg, imam depth Of 2 ft as measured frmlt the t7t3TOf the brier Structlue. ~
orgalticataaerfauseoatheotddrshellofllseembe~ttentmfxiiiwuvepda• p audstoctpukordispaseotkpmpnly.ittutago6jecliooabiematetiatmda tivecsrablisho,entPlacetanpmaryseditnattcamdme9smeabctowtha6asin design~eddapasalans t Tberiprapandgrarellfhermusttoaformmtl~spaified~ad~giim;ts
as Waded. mown ao Ole plan, fled sloe thm2:f. (!1 I gsadmg Lraus A+tamtafn side around the exavatr°n nO pa rt N wF~ic Z
2. FnslaetdsfdlmateridkrOtemtbaduaetKiafteeofttxds,vroodyvegeta- wbev used, rot w steel deal tial• matter; aed adkrob' 3. Facer cbrh gn neptirpeeng and be F~dl' Z. Cubotf trear~b-Fatcav~e a ad-0ff trtnch along die senturme of rho anh agattc ~ac~beahts mriaiai. Place the fill in Ghs uat . Construt:tiofl i. ooe bbdc on ouch side otdre stnrcane on im side m the trotmm row to lfay the miromam apllUae of eacaYared area amend the drop inlet at >a• LCS .,N ~ is and be propedy ~ 35 d'isaabed. ^ C
fiU etnimkment till Ole Udtc6 m stable sell mauriel, bat is ro rase make it maxaed9 irtcbesadd madli,te~pa it Ova flit the erttbankment6 iocnes p ~ Pu~tB tx ~ m$ any damage by S CltiCaxlonS altowptroldr~ge.The~rd~iontnouEdbeexcava~dattearxZ3rches6erow trey YQ'l~ h~-l ~t a~ ofrtmydamageby thecrotafthestamdraia,PlxedreboaanrawaFbtocksagam3lthecdgaof ~
te~tnaR2ftdap.'ttlecta~faetrcnmtstextendiambdhabnmlaosmaat~st m~~. "a"~B~rA'ap~P~F ~odmr pketoffr'lmTtdoOt ttvorOtedamaged Ole eBeveave oCthe rise crest, Mahe Inc mioimam 6oltnm width wide enattgh ~ ~~?&1~ ~ 1d oralap a mitlimtmor l fl.lf da daotage is Iovardtedamagod dle6asinlafxgtecotlditioas"witnthekln estdirnenakaerientedmward flifdre is dtesbrmduraforlateatsapponandt4avoidwashsupwlrptortslbwaorms. ~ g ~
topc~ttoperalionafexcavatioawdcompaceronc9aP~butioeotaseless 3. CmtslractOteaaaRSUCtioninthe~t.PtotaYdtetonnxtionbe- extetwivq,r0ptacelhetminsftltxdorb, 1Faeded, J~ ~t n slr6sequartrows b71 Fixing 8 x 4 wood erode the bagru imffovr area to provide maximum trapefCraerxy. 0 , _ N thoughbkx:kopeamgs. ~ O 0 r
tbao 2 !L Make side slopes of dte tnmeh eo aterpa then 1:1, Campauuat a- twandtetip~taadtbesdlfmmpipingbyas®g6lottrtabricaraneywaycnooft' quaeeteme ate dte same as dross fa the tmtueluaatt Keep Ole rrptc?t dry Bench btxwecn dx ripr~ slTttTAUe and the soi#. 4. ~P~Y ~p~edby equ pmw4butraFe ran ma,middatttaging Ole rd. iasttil previsions [adeairiag the tempormy pool to improvettappiag e(ficien• ddamtgingdrefii• E.CaretnN ilthard wbemlehwithl f«srrullstamsandtaav0id msfiansundm wauratterneavyraios. O O Q~
~g~t~B~~mP~ PlaauOufltafabricbetweattnetiprapandsdl.E:lendlnefabricacross ta. y wmedodroroauperahle /1~rmttapea- eY prdrle g ~ (n ingsovaan trlockopeniags to ttoidgravei iopbx. t3
A Enbaalm~t-'15ka rip atataial Gam Ole approved asses s~nw oa qte ~ ~*'al' ~1°~~ aal sides a 1ha tapotlhedam; tr 5.7Lettanin~ toflh t ' shvatd be 1Stbnadrc ' ttlaxmnntssone o ~ hemaximnmsoone Cof15tf1lCtlon tCkadrea.eaotilldsbrisdntaughthindrxexavationan0disposalotsprnt. W ~ ~
plans, h should be dean m~ soil, fret: of roots, woody vegelatiat, mcts, exwvax a keyway trerkh alongfhet+ettlafiaeof the sprllway foundsioa diameter. 3.UseckartgnweJ,3/4-atJL•inchisd~merer,piaeedziacnesbelowtketop ~ ~ In C afdtatdurlcaaa2:istope«tlallaaadtmaorhltWanerdrgcadaA01'#s1 Specifications a ~ C
old txta:r objatiaRabk awetial. Scarify areas oa whet 6Il is m tie placed extending np the sides b the height of the tkm. The hatch sltoald be m least2R aad2ftwidewidlt:l sides rcuglt~atrysrone,IlsbouWbehard,angular, ltd'dte~Cingtd1.71uralnnlaiatawstwotainsuffir~tttatoisouesaittan ~ d. awrbefuldswttea z. Gtaee the approxh to the inieiHtdformiy. w ~ _ wasnadatooeisradTlsmrendal. dbebad,angular,
be fainted byhand imoabaB wiOxtattrtmtdiny tf watcrt:an besgoceredad 4. Ckarthepondweabelow thedevatioeottlteaesto€thespidwaymfaa~ute Yand wsl graded. ' 0. ltooty stoat sad greed ue used,trxp else skrpe rowarJ t8e brtet ao stoeptr 3.1'rarect holes vet, ~ L ~p ~rsp a thins 3:i.Iaraamaiatam 1-ftaidekvelsmneaaabctaran dxsnncw+aaad
oftnnbaB,kamowelforpropercaa~tioa.Plxefalm~ialin6m&indt sa5rr~ttdeanaa, ' txaNiauouslaseraovatdleearireknupbofdwNlseaarddleacatrroaetitCev~r 7. Ca~ttalheaprononza+o;ltadewil5movafallatUke~.MaYetnemp em3, htatro else tap araurd dx fate b pnreut gravel f'roaa iakt L1o the slope toward the i. Whoa the camrbming draiaage sea has boon permanently stabr7iud, seal
pagioaaugbeo6taitledlryronongthetnasanudoatmdklgeqnipntdltovrrlhe S. Alloutandfalaktpesahavldbe2:tortlatter. ~~~A~thedowttsaratr andievdwiltthereceiviagareaarslight~y islet, mesmoe3 archealadiamekr«larga.on thesbpeaway6em dleiakt wtgtbotes,idttheltasntwidtsrabtesoiito fiaalgti~ling elev=6~ons.rompaUb s8 taea nee irTCh tR-3t1i gravel(NCDOTt5'iwashodstona?ataapnaamathickaw pt°perty,andsubr~iu. -
Gllsothat~eetttitestuAt:eortachlayeaiatravetsedbyatleastoawheda bdowu. uradttactoft6enewyagaipnram,aracompacsaraaybnased.lbnantr;ttho i.Easuretltatdtnoooe(drainage)sectiatoftltoembanlottanhasaminbnnm ~ E~~~ k afit3.
anltankttatttmaaelevatioato96higherthaathedtaigaheigl$mai~wforsrb bommwidthsd3flaadmaxinwmstdZSlopecofl:lthatexleadmtnebotmm , k~ p"'PaIJ'd,~?ttixreaiviagsmnmand ~ ~ ~waY erably ~g ughart us kngOt rf a curve is trended m rrtsite coedi- raving strnro and . Maintenance Iaspect,elan,andpr~edytllauottiotheexcavaudbadaa[tawaystosmwltr7
• lioes,place ilia dte t8tpxsatditaof meaprat dtafrtsitecoadi- Maintenance ?aspocttbabaRiatdtaeacfiroisaadmakerepairaaaaedod, stabiliudTo rovidesatis• tbtcantn'6wiagdrunagearatusbanPcrmanendy P
4. Cnadrat ~dlwayg--Sxmelg atndt dte eser m dte Datsd,a band smb m 7. (baswct dte tninimuot firesbed sines spt~vay bosom with, m snosm on mettle waW6ghtstntcuraicatgt~ioe, Secure all txemoctktt: baaroea trxsel Ole pleas, wiOt 2:l side abprs attatderg m Ole top of dte turf t,lled ernbartk• 9• ktY aftaaoastrncOt g sla6iOze all ~stur5ndareas widt vegetation R«rmae aettinlent as rosary m provide adequaro Vallmle t« sub iacaxy ~~1'. ramrva sedgy whdr the YOIIItI1E of the basin has
strrtiartsbyapprovedwatettightass~bliee, PLcsthebeudmdriseraafitm. meat. RcepOxdudoiess of rile sidaotO+espiHvrayodklsttucaaeata mini- (PractiasdiO.TagparurYSacu7.mod6.11,Femto~rtSadrng), as widt vegaaiipo sequeatsaira. hren reduced by ona•AaiL 5ptead alt eaavated material eveaiy ova the sor• roandmglalyd areaastoekpile andstabilbait appropriately.
smooth toaadation ~ impetvitxs soil. Do sot tare petviaue sirmatiat such as rttwnaf2l ittcha.Thtaeirmuw hetevdatulea~ctedtvgradefoaxsare sand gravel, a vn>sded strafe as amad the pipe a sal seep eoBata. des~ecapadty. Maintenance Wfiatdreernr~ibapagdr~nagsarralrasi>cerrttdegrratdyala~'tittd,rsmoveaH ,
Place OrafiB material around dtepipeapr~lway ie 4•iach layasaadcaopact k Inapoctripnpatrllelwtucaaes e(rarhavyrairtemseeiraoyerosw auuwdar d:bvr Otetnptaphatakertptace xif somrs kavebeeadialodg~.lmtnedFately erodes troadar matrainb ~ ~ aua6fe ~ s~ either «~spaee of it properly.
tmdernadamtmdthapgxmatleastdtnsamedmatyas~eadpicaRembOdc• i. Afataiatusrdeldtestarsndionahouidbnawetbgtadedrttixsmeofsmtte awteaUttadedrepaitsmprareYfnnnerdamage. meat Cart start be taken sotto rake the pipe free 14= ooalaet wilt 6a wiOt a dsa aiu ~9 ochea (class 8 stollen coauol areas is netsrwnprdcd} and IgTd. immediately Briag Iho disputed area m proper grade, thro sruooth sad sampaa U. Ap• ty~~aUbueares,arouadtdaialet, r.,,
fauedaUOa when oempaclinng tinder tkpipe aeaee6~ a atficiatum ware sae of 14 iacks'llle arose may be arxdaaaplaoedaM the ~ W H ttom~,,,,~
_ smelts stooa waland imotlte roids~tne lager ssovea The amve shaid be Pmeeamiliatnmdeplbof2GafMrtd•oompactedbncl~aradtet>~~r Iwd,wtgela ,aadnignlywoadtaraeawattt. - e 1/ a~
RIP RAP OUTFACE PR01ECTION bckteuoaingtiwunoataoucaaaequipmow.Aochertttnsuxaplatxbpam• STD. f~l BLOCK AND GRAVEL INLET PROTECTION= IwXCAVATED DROP INLET PROTECTION ~ STD. X10. REV. STO. N0. REV STD. N0. REY~
CRbUrG1~911,~8C10ryaM~tamprEVdlt~Oa•1e00C~6a1Caldthnt>~ 9.EIL41oEIt~EIilEa~lEBpi~VayDtlllEl9od~RpcEdalfdownwf~8mpffillhemC O i aodaitbekaalled atrexh dredamaftarthatnobaattmsatt t~~ ~ bY~g ofd+ccmbwtkmeatttaalw~lecu,dtomaateteecnedaudoudet isac• 20.55 (NO SCAM} _ 30,08 Na sCAi.E ~ 30,04 .:C q
• iatwmpkte, apabbfa0ltsreoeivingsueana.Koeptheadgesoftneslateoutta fn?sb `
wilhlnasutratadiaggrotndrtdsltape thecagermoaafine$teautt~owsueam s• ~ ~ Y tit uadiamrbed aciL {&jeiaaaa: tltdlerf?otadiotr). ' A
'inn adtiavanataofplatatcdekvatic,gr~de,designwi~lt,aodenaanoeand vnw,~te as aRE:'~o er TttE EnaREER exit chw+nnt stvpra ate eriricaf m dta wtecessftd opaatiea of O+a cmeaheacy 10.1XratetntxgeacX byp~ac m ttaturd, staMts areas, Estate tly~saomlas so ~ - {t• wut. STEEL POST STEEL POST -'1 A
) spillway. IhatilawwiBmxdamagedlbetnbenkmeat ' 1.5'
f. rders~-Dls~nargewaterhuotltnnesiaiaaatatmarmpraveat~ion.Use il. Stabs'lizetkaabankatentaadaddistutbedmrasahaNaOtnsddiment min H FxdER FAQ z FILTER FA6AIC
t>ivas~Trish'ptlktptofaclioamd'ivatsetfimdttdatkawatertoOquppacnd po°1 min U r,., w ~ W J ~ F.
'the areitm' tgsia elfic' (R •Rrwo,¢'Coaa,af - aRdtlotmsoteanttranthetapams~dmtelyaftvso~uucuoe(Rr~aeaus:Sm~ P~ ~P ~r efe?ennes. JaceSrcblltzmttoa}, ' Alssamraandt7aairt trovEN Tn.T>1t PAB~ W m ~ a! ~ < tp tjV~ t0 ~ 1~ ~ ~ ti
It Shaw the distance frost tea top d the spllwey m the sodimcm ckaaoa N ~ N ~ Flltttr O fabElC M~~/~
7. Erasiontwnrcvi--Coostenadusttuam+nanthatthedisdn6uiaaaismini- Ifvet(oee-nattthedesigttdopth}aRlheplansaodmarltaiathart~. nailed. ~rettwrfacewserawayGaabseatraa.Complaetheanttt
btfore the area is cksned. Satlu!rra the emer®eoey spHlwag embartiuneat sad g d I - - V1 to
au artier disttlrhed eases above dx taew of lee ptieciitlal spilkvay 6amed'rueiy Maintenance lttspat sedimera tray aPoor sad period d sigeiraam aaalfatl. 3 oftarwnsauutip,(Re~eseacra:sm~'aresrda7rad<ioa}. Removesa6mattandrr:waredietrapcoimaigimid~taasiomwhaaUlnsedi- b b l ( I - I ANCFgR slant d' MaaMw smut ~ tnnMw A
axathasaaamtdla~dtoawhalEthedies~tdt~thd'Otemp.PleonOtexdi• { t 8. Sofa Itt~ts aasctcntldraandcaa dslgerotu.Avtbd matt dint 1: reap,rod it Ina de~tated tispos,l ana and septets the " " - Class A ar B w
lr ~Y , slap sidealopra, and fenro and msk twuh warn' algal if uespassiag wtnuainatodpan of the gravel arcing. _ a ut:u aF suanNC stwtT. ~ oti Erosion Contrd ~5 ta0.511ED STONE aIAY 8E USEO _ .~Ofle
is tikdy. Polbw aK mateaml bad requirameats. Cncettbeartrctuta~rdam~e6nmet~aroeapipieg.Prtio~caUydtndttne ~ t. 5~ttu~i irav t~ar~ilM a~F eUNE ~ tn~it ;Y swrari OVER TlaWDOltrr, t. nL1ER BAIttaERS S'NINl. 9E INSPECTED BY ~ FarAttpAtLY 2. n rr ~~r RESPONSiatE PARTY OR NIS AGQit twliLT~1TELY AFTER FACN Filler 7 24 tn8x v
.Reoovesed>raeataad duptnddtespittwaymdwuEitffiatroNmtdaoft.Sllbdowdtelowpomt~ 2. aOVEtt Fa.TER FABRIC 9E OSEO rMl7tE AT Faxx IS 10 REwAat Maifltenaflce edacltatbasioaafsr~txxiodsaf'atgar~oanttut>o6r ~t~aaedumdrralaayaetAaaeat~,hea~wdmtaKSusugta FoR a t~aoo aF utx~ tww Jo OtiYS. IGVFa'ALL AND AT tEA5r tLrR.Y txxartc PTtOl,ON~D RNNFpIi, lBbrlC atCerftef ANY REPARtS HEEOE6 SrNLL ~ 1rPDE IMME~ATELT.
tratotadtebavetoitsariginalatswkensedmtentacaamaatesmauo Py shove deafgtt grade. Aay riprap r~phued Gem the apiDway mast ba a sTm. t~osrs stmts. eE s•-0' nt nEUxtT ~v+o eE of THE 2. SHOULD TrIE FAfRtIC t1ECOMPp$E OR DECINaE a~FECTNE PRIDR TO THE EHO OF TT[ ExPECTEO trSA~E LIFE AHD iNE BAttIDtR STaL r5 NECESSARY, THE
halFOledestgndtyRn. mplaeedimsedtekly saF-FASrEHeR ANtaE arm nrE. a. WOOD POSTS SttNt eE 6 TO T FEET iN ,fElpf' ARO 3 ill ~ FABRIC 9rALl ~ REPIACEn PROMPnY. Section A-A
CbadtOleembstlmtaltspiBways,andou0etfaamiondamage,attdmspnra Aftera8sedeneupodttciagareasnavebanlxamaoeatlysta6irrmd.sa>+we m~ vosHOi~iESS~rt~wr fs~raR~E sTrwtES ,~lr toHC. x SE'~bIT DEPOSITS sTTrnan TIE RLTA04E8 AFTER fPEN sTOau EVEMf dH SILT FENCE SH01A0 eE RtpU4CEO. 1trEY MUSE 8E I~tIDVEO WFrttt pFPOSIES RF/VG1 APpRDIC rW,F 7rE rrDCarT OF 1Fae lUdt~R, prat SEOIIaENT OEPt1Sif5 REMAIMNG N
the embm?raeat tar piping and seokmwe. Make all ntxessdy rclnua mt- Ole wrtrcatre std all unsuble sulGttleet 5atoottt the area m bkad wub tie ad• mediataly.RcmoveaBarasltttadodtardebrisGpaOterisaandpoalarca. 'airnaga+emandsmbiliaepraperty(Rele?ar<aT:SlvjaeSrdbitlmtlon} s. rasHEO sroHE sww1. sE usau m truRr sKatt aH[R spr FErxE 1 t4 USfD AeJACtiRr TO A CNARNEI., t]~ER OR f>1HN0. PLACE AFTER THE Sa.T FEPa:E 6 REMO4E0 SWYJ, ~ ORESSE6 70 CONFORM 5'aMd~edc~m--S~neat~addErptac~daertlrasfirrrlbrrketoaeapw~rkemwtbpaomdbdrn. 70 1HE OOSTatC GRAO~ PflEPAREO AND SEEDED.
6. TIlRH SLi FENCE UP SLOPE AT tIAS.
7. NFIEN FABRIC iS ttSrD TYlnt TARE a~91 8' ColtERED POS15 MAY SE ItSE.
TEMPORARY RISER BASIN TEMPORARY FILTER OASIN sm. Na i~EY. sm. Na. REv TEMPORARY SIi.T FENC rne~stancestxlTtttatptTitda E A and B are of egtaat BlevaGan STD. N0. REV .
rise sca~~} 30.01 {Iva scAt~) ~ 30.02 (iva scAt.E} 30.06 - ~~~,„tllttlrlrrq,,,
A a
:o
" Q o~ Q z: t? r ~ _
carlpaded soa z'
~ .min sl Y' min top 'I r s r ~
C{NlStfliCtlOn L Plxa stare to dra ieaard ~reemiaa attars is the ~ ea afi1~ fabric ~ ' ° ~
~ 4" TMCK 3tl(lQ psi t:ON(~1E ttD w/ TxT 1t}-10 YIl1M4t '•':1: tT'v~:~•~ to"mat ato ~ : T op SpeCAt'ICaGonS urnntnu
~iQ II II III II( ~ swpe I u l - _ -r w ~ I it! II II _ II _ iH i _ n - if Z the caller stone sectrort at iadces Gelow DaDral lend ~ f; wha~a ~ tam abuts tnedmaeet baota. Y
c 3'_p" x 6" oPENINCS TYP. Atl 4 SIDES _ 8' typical 2:1 a tldter O - REVISIONS B
, ~ -•--•-x~r----x x ~ pti / 3. lattead swea at least iS A beyaat>be ditch l?aoks (Figae 8.836) w 1Kep , avtrfbw+vgpx iiam amdatmuuing dredem ag rt ra•eataa the chmmd.
~ D FINISH $"min ~
N 3'- fq. i, Setrgt>aweeademstoamaedautireelevatisnxtAeap°fdlelovvrs
~ ~ . 2.3` j2 damisdlesameasdlemesdevadandtlreugpadaou, coarseaggregate F`r
O ` d / ~ 8" 50L1D MASONARY i. f?rotettdrednralddow~eaamfiorothalowostekockdam,coraideriagdwt vmta wip OOw ova sad aramd the dare (Pracola SRi; 4arier Srobifaarron
o Constructloon L anap~parlyndraulyd~,bn~n.atat~,~tdtnntr~a~- Constfuc~ion 1. ~ , r1 S CIflCatiOnS RanovestdprrtperlytBsposaorai talp,ntusb.atmpa,arorlkrdljx- Stranre)
N ~ $peGfflCd~OnS tiottable melsial. FIB and compact all ~ frcha, swatca, a gulBes Ihet wa1 be atwiU6e ~ i, Maireaeeinatthechaoudreacha6ovpdrem«topsttarndatofssmtAe,
N 0 b 2. E+muetlnttltemkrilamRdaulntdedetannnaionoxdsatldedgare~uira d maamretgrasxt kvd aakove. ' e ' vAtYles mama. L Jmt bafow t of COnStNCtIOn 1. Clan iha eatraace sad exit ass of al vegetatias, roots, and atlas obja• ~.t T. Forme dntcilaralei ~ ruch=e ndvelt below dwelt
~ t fill, Inn b tae of dte,;a~ dtonld oa disked ny 3 2 t.eatethattnetopof'theaiYcisnmlotVeratanYl~~~ - ~1°~' °~Ged~ S 'ieatl0ns tiawblentnaWaadptnpalygadeit dams,arenDCS~je«todam:ge«bbel~efrdD~~Itaaas~xs. p~ .
~ lion plus the specified aarkalau. M .asdsgbiliaedtadiY-xatoamtke,lglode.aldcaoasaettian,
~ D 4 PAR( Alt. INSIDE WALLS i,Aovidasafl'iciearaaaammddivasianam ~i°~~~P~ astlpfan, i.t?laoedregravdt°tlx~ecificgradeaaddimarsfamslwTraonttreplaro,and Maintenance irr elmdc0amsaMchauads[« altaexllslnoit'event. amaab is d~
C7 WITIi 1:3 C1:MENT/SlWD psmkamrJaaeregtalSogaod au *+t ~ ~ m l al aarlaoom :tmbility ' 3.Provide&abmgeacanywalatoasadmoatDapordhawuabboutka. Amicipatesubmergeacaaoddepositioaabuveduchakdmaede7«ioofrom
3 t2" 3/8' MIN. 1FgCKNFSS ~ andbprovidesmbility a fYP• S, vegngta Ole ri~ immet~ely after t~lrOgictl, mdess k will female in Ngntbwsarsmsdtheedgesot'thedam.C,orrectatldamage®arediasely.lfsig- Date: 12 49 43
(n h plaookdifian~wartil~days, 3.Yegeglivdysts6~stnediversioaataitsitn, a [!se geaanile fahria because dreg imprawe att16il'rty aE tlw toandatim in nificaat erosion soars betwsoa dams, ~ a prmecdxr siprap timer is tdu / / iocmienanrbjeutoaeepage«,Afgbwxata6le. paAiaaoPdwcbararel(PradiCe63i.Riprap-GoadadPmmdC/raaneJs~
Q ' It --a~-X ~ . ,x-•~-- it--'~-- X-~--~-~'•X a: X 8" . care: 1 "=144' Hof.
z ~ ~ Maintenance tnspeacemporarydivasionsonxawcekandafleae raiafdl.tmmedeso- Maifltenaflce faspeapamslemdiversianaRa ~ I raaovesodimeitthomdletlowarcaand uOrttSvasiar ' tiaaimmaliapd teatove evafstuF,dldurulgdlecatumrctrovt>.paa- Y mW edge. Csefu4 . _ Y ~Y tr6sm~ai as from the tiow sea aad recur the f leav- xemovesedimerrtatxruaulawtbehinddredamsaaoaldpltoprrweradaaTage S N A ostrpaa• Maintenance I~imamdregraveipad>datasditioRrapravetkmadaae&merM ruin taehamrdvegetatfao,atlowdrecAatHrdtodraindrrrN,hthesrarashaktam, /
e0air the bIa else ODrISBDGIiIa t7tC. Ibis aTAy teCaire DesiOdu bDlimstiaR with 2•inc4 aNt nnwsr tare! 14tWa fins rm~vinv ed'inuml aw ells dam. Add srsrl'e ar [7 rn w n ~ IA,tV
W lyd~outimmda~slum*mpi asaoedodWbendeampmmxredis ~ Cbedcoodmandmdm &*lepasnnee&&bbiim me in ibe mom AfwehmimWl.ipsmmanym-metwemdoovvxdhiewsndclem d~aaaneededto aitinta~ndesigageigAtandmasoction. wive
8- CONCRETE BASE w/ W. 1G-10 WWM pennw4ndy oaldir4 mmoea die ridge and the du and in Wad with the vigula^ el tdyaba ti aatOndmau it out as necemary. humediady aemm eu ob*tio=Nc nmtafals spilled. Checked: DLM wasbod, or ox*W oeee public roedwaya
o maaal ground bwel and app Vrmt y n AibwiL 0 Job: 03-07-06
co o ,
co YARD AREA DROP INLET N TEMPORARY DIVERSION SWALE TOP OF SLOPE BERM STD. 140. REV. STD. NO REV. STA. Ni STABALIZED CONSTRUCTION ENTRANCE TEMPORARY ROCK CHECK DAM Sheet
U a (NO SCALE:.. 120.5( STA. NO. REY. sm. N01 REV. M. NO REV.
too SCALE) 20.57 (NO SCALE) 130.051 L NO SCALE 30.11 NO SCALE 20.60 120.50 { ) }
LL
c: Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN m J DESIGN ASSOCIATES P.A. Owner: Approved: Date of Issue: JAN 15 2004 of 3 Sheets
U

CONSTRUCTION SPECIFICATIONS
1 TRASH RACK 1. Site preparations -Clear, grub and strip topsoil from areas under the ~
1 ~ ~4 REBAR embankment to remove trees, vegetation, roots and other objectionable y material. To facilitate sediment cleanout and restoration, clear the pool area of ~
TDP OF RISER all brush, trees, and other objectionable materials. Stockpile all topsoil or soil H ~ Q ~
I I containing organic matter for use on the outer shell of the embankment to N
I I facilitate vegetative establishment. ~ ~ ~ i
I I I 1 2. Cut-off trench - Excavate a cut-off trench along the centerline of the earth fill ia. oe ~
PERMANENT PRE-CAST CONCRETE DROP BOX TOP VIEN TOP VIEW ~ T4AREBARCK embankment. Cut the trench to stable soil material, but in no case make it less ~ N CRASH RACK ~ than 2 ft. deep. The cut-off trench must extend into both abutments to at least ~ W ~ O
TO BE ANCHORED IN CONCRETE TO PREVENT TRASH R FLOATATION. SEE CHART FOR SIZES. ~ the elevation of the riser crest. Make the minimum bottom width wide enough v N 0
TOP OF I I TOP OF RISER "H" PRE-CAST CONCRETE BOX to permit operation of excavation and compaction equipment but in no case less ~C I TO BE PLACED AFTER CONSTRUCTION. than 2 ft. Make side slo es of the trench no stee er than 1:1. Com action ~ ~ ~
MAXIMUM SEDIMENT STORAGE LEVEL I DRAW DOWN ORIFICE TO BE ANCHOR IN C.~NC. TO PREVENT P P P R ~ U
6 BELOW DRAW DOWN ORIFICE INTAKE I I #5 WASHED STONE FILTER COVER PLACED IN RISER AT A 45' AT A 45' I I FLOATATION. requirements are the same as those for the embankment. Keep the trench dry ~fAL POOL I I during backfilling and compaction operations. V ~ ~ ~
/J5 WASHED STONE FILTER COVER / OVER DRAIN PIPE, 12° MIN. THICKNESS ANGLE FROM NORMAL POOL OVER DRAIN TILE, 18" MIN. THICKNESS /Y I I ELEV. TO INTAKE 1' BELOW I NORMAL POOL ELEVATION. 1' BELOW I I - U 000 LEVATIDN. PERMANENT PRE-CAST CONCRETE DROP BOX 3. Embankment All fill material should be clean mineral soil, free of roots, wood 0 z ~
20' I I I I TO BE ANCHORED IN CONCRETE TO PREVENT ve etation fOCI(S and other objectionable material. Scarif areas on which filly ~ 'C3 °d' I FLOATATION. SEE CHART FOR SIZES. IS g I J Y • SIy ~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 I~ Z 0 0 I to be paced before placing fill. The fill material must contain sufficient
0 0 0 0 0 0 0 0 0 I II ~ 0 0 0 0 12 0 00000000000000 I I BARREL 12°' moisture so it can be formed by hand into a ball without crumbling, If water ~ I can be squeezed out of the ball, it is too wet for proper compaction. Place fill ~ ~ d'
( ~ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 I I BOTTOM DRAIN VALVE STEM material in 6 to 8-inch continuous layers over the entire length of the fill area 0 ~ SUPPORT BRACKETS AS REO'D. ~ p
000 000 ~ and then compact it. Compaction may be obtained by routing the construction ~ ~ ~ I I hauling equipment over the fill so that the entire surface of each layer is 1~1 p ~ ~
i - U I traversed by at leost one wheel or tread track of the heavy equipment, or a ~
;`'rf~-'¢`~ 20 LF °K° DIA. PERFORATED DRAIN PIPE w a W I I compactor may be used. Construct the embankment to an elevation 10% p,,
GROUT BOTTOM DRAIN N 20 LF °K" DIA. PERFORATED DRAIN PIPE 36° MIN. - AS REQ'D TO PROVIDE A DRAIN I ~ higher than the design height to allow for settling. Subgrade and fill to be verified viDE A I I~ and tested by Geotechnical Engineer. V~
CONCRETE ANTI-FLOTATION BLOCK WATER TIGHT CONNECTION. :c~oN. I 1` BARREL - I 4. Conduit spillways All conduit materials shall be as called for on the plans
SEE CHART FOR SIZING & VOLUME. SECT/ONA-A CONSTRUC110N NOTES: ~ (Schedule 40 PVC may be used for sizes < 12" diameter).
CONTRACTOR TO INSTALL PERMANENT BARREL, DROP BOX WITH ~ OVER-EXCAVATE - - J Securely attach the riser to the barrel or barrel stub to make a
ANTI-FLOTATION, DRAW DOWN ORIFlCE, TRASH RACK AND EMERGENCY 1' DEEP FOR FDR watertight structural connection. Secure all connections between barrel SAGE , INSERT PERMANENT RCP BARREL sections b a roved waterti ht assemblies. Place the barrel and riser on a
SPILLWAY AS PART OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. SILT S70RAGE INSTALL PERFORATED MAIN PIPE AND STONE FlLTER. ONCE ALL N +'~4' ~°~~'I'`''.'' i INTO PRE-CAST CONCRETE RISER. Y PP 9 firm, smooth foundation of impervious soil. Do not use pervious material such ~ BOTTOM DRAIN wTH INUERT IN OF BARREL =BOTTOM OF POND ~
DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE °K" PVC BOTTOM DRAIN WITH °K° GATE VALVE & SHUT-OFF vALVE & SHUT-oFF as sand, gravel, or crushed stone as backfill around the pipe or anti-seep
AU. SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. coNCRErr ANTI-FLOrAnoN BLOCK collars. Place the fill material around the pipe spillway in 4-inch layers and ~ 0 SEE CHART FOR SIZING & VOLUME. COmpaCt it under and around the pipe to at least the same density as the O N
' adjacent embankment. Care must be taken not to raise the pipe from firm ~ O M
contact with its foundation when compacting under the pipe haunches. tt--~~ . ~
NOT TO SCALE NOT TO SCALE F.~+ O ~ Place a minimum depth of 2 ft. of hand-compacted backfill over the pipe .a..+ ~
~r spillway before crossing it with construction equipment. Anchor the riser in U] ~ ~ place by concrete or other satisfactory means to prevent flotation. In no case ~ ~ In
DESIGN DATA St should the i e conduit be installed b cuttin a trench throu h the dam after Q~ In IESIGN DATA SUMiMARY POND 1 P P Y 9 g a-r
0 oM o onl I n v. the embankment is complete. 0 orI o o d le
'B' Norrlal Pool Ele A 'C' To of Rlser Iorrlal Pool Elevation 696,00 5. Emer enc s illwa -Install the emer enc s illwa in undisturbed soil. The .C z 'o of Riser 700,10 9 Y P Y 9 Y p Y ~ ~
~YA11~ , , p D Spillway Invert P vent Elev, 706,00 achievement of planned elevations, grade, design width, and entrance and exit C ,pillway In ~ a O d'
fL~N~ Splllway Width 'E' Top of BerM EI ;plllway Wldth [feet] 10 channel slopes are critical to the successful operation of the emergency ~ w 708,00 spillway. op of BerM Elevation
'F' Barrel Length larrel Len th [feet] 80` r N g ' 6. Inlets - Dischar a water into the basin in a moan ' n. U e ~ -
'G' Harrel Slze [Inc larrel Slze [Inches] 18 RCP g er to prevent erosio s ~ ~ ~ O
'H' Drop Box Slze I Draw Down Orl Irop Box Slze [feet] 2'x3'x12,10' diversions with outlet protection to divert sediment-laden water to the upper O O C~ Iraw Down Orlflee [Inches] 3' end of the pool area to improve basin trap efficiency, W {n Q
'J' Intake Elev, ntake Elev, 699,10 0 C~-i
'K' Bottom Draln S 'L' Antl-flotation lottoro Drain Slze [Inches] 6 7. Erosion control -Construct the structure so that the disturbed area is minimized. W O ~ 6'-0'x4'-0'x3'-6' ter bar ~ ~ ~ C Intl_flotatlon Block DIM. Divert surface wa away from a areas, Complete the embankment before Q
Antl-flotation Intl flotation Block Vo6 2,96 CY MINIMUM the area is cleared. Stabilize the emergency spillway embankment and all other 0. C
'M' Antl-Seep Colla 2 Year Peak Intl-See Collar Slze 4-6'x4-6' W p disturbed areas above the crest of the principal spillway immediately after ~ Year Peak Elev. & Dischar a [cfs] 700,08 & 0,47 g construction}. ~
Pre-Develc Pre-Developed Run-Off [cfs] 41,68
Post-Deve 10 Year Peak Post-Developed Run-Off [cfs] 67.25 8. Safety -Detention basins may ottract children and can be dangerous, Avaid 0 Year Peak Elev. & Discharge [cfs] 700.77 & 18.47 steep side slopes, and fence and mark basins with warning signs if trespassing
Pre-Develc Pre-Developed Run-Off [cfs] 74,08 is likely. Follow all stone and local requirements.
Post-bevel Post-Developed Run-Off [cfs] 117.60
25 Year ea Pre-Develc !5 Year Peak Elev. & Discharge [cfs] 701.66 8 31.28 Pre-Developed Run-Off [cfs] 92.64
Post-bevel Post-Developed Run-Off [cfs] 146.30 ANNUAL INSPECTION/MAINTENANCE PROCEDURES
50 Year Penk Pre-Develc i0 Year Penk Elev. & Discharge [cfs] 708.43 & 3L' 20 Pre-Developed Run-Off [cfs] 106.52 H
Post-Dever Post-Developed Run-Of'f [cfs] 167.74 I. Annual Inspection: Annual inspections sholl be scheduled b Cit of Concord and
B B 100 Year Peak Pre-Develc 00 Year Peak Elev. & Discharge [cfs] 702.95 & 32.80 Y Y Pre-Developed Run-Off [cfs] 115J5 Owner to be performed on the first of June each yeor.
Post-Devil Post-Devet d Run-Off [cfsl 18L99
II. Inspection Activities:
CATTAIL W H CATTAIL T ha Latifolia , 1 Gallon Size a} Testing of the emergency drain pipe valve. M"'~
7 ~ YP ) a b) ~suai inspection of drawdown orifice.
PICKERELV c} Visual inspection of the trash rack at the intake orifice. N ~ - 1 II n Size PICKERELWEED (Pontederia Cordata), Ga o d} Visual inspection of the emergency spillway. T ~
~rLw~rPL~iv raw e) Visual inspection of the pond rim and slopes. ~ A
BLUE-FLA BLUE-FLAG IRIS Scir us Validus 1 Gallon Size f) Measurement of the wet pond depth at the dam end of the W w ~ ( p detention pond (Distance from permanent pond drawdown orifice
NOT TO SCALE F POND invert to bottom of basin). . EDGE 0 _ _ _ _ !~1 - g) Visual inspection of all stormwater structures on the served site TT~~ ~ Z
~ S'_0" ~'~'-SPILLWAY MAY BE - " - ' " - ARIE VARIES VEGETATED INSTEAD ARIE "D" (MIN) ARIE lads feeding the detention pond. V1 z
(MIN) OF PAVED IF ao~ h) Visual inspection of the total site drainage basin for adequate py
CONSTRUCTED _ TOP OF_BERM EL_=_"E" T~~~~L..~ ) - - - - ground cover to stabilize site. U f W i) Visual inspection of upstream (off-site) areas feeding into the site W
/ ENTIRELY IN CUT. N : d = rains a basin for otential off-site sedimentation sources. N
SPILLWAY INV.= D VARIES SPILLWAY INV,= "D" b 3 1 J ~ III. Maintenance activities shall be performed as follows:
~ Z ° T~ f...~ Ned ~ V1
EL.= " ~ ~ ~ cv6~ 1. After every significant runoff producing rainfall event and at least monthly b a
~ SPILLWAY WEIR UNING~~ ~ ~ w a. Ins ect the wet detention basins tem for sediment accumulation, erosion, trash , P ~ ~ ~
l~+ W/ tOx10x10/10 YVWM. a accumulation, vegetated cover, and general condition. av 4' O.C. 4' O.C. cvo~ Z
i TYPICAL TYPICAL b. Check and clear the orifice of any obstructions such that drawdown of the temporary
UND ESC ool occurs within 2 to 5 da as desi ned. EDGE OF LITTORAL SHELF I P Ys 9 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
SPBL~YAY SECT/O/Y.4-A SPBLM~AY sECT/ONB~ ~ mow vegetative cover to maintain a maximum height of six inches, and remove trash as
CLASS II RIP RAP OUTFACE PROTEC110N. _ NOT TO SCALE MIN. THICKNESS= 12°, LENGTH=6'. NOT TO SCALE - needed.
NOT T(I ,SCALE ~ ~ 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.)
i ~ quarterly to maintain proper functioning.
NC G1rN7F1PL/A~' Q~'PRLNARY.S~/LLlYAY 4. Remove accumulated sediment from the wet detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see table below). Removed sediment
_ r------.---_._._~.___~_____._ , T.__._._~ -______I___.._---~ ~ ~ --r-._-~-----_-~------~ s , i k E ! ~ ~ ' ~ 1 ~ I I , ~__-j___`v shall be disposed of in an appropriate manner and shall be handled in a manner that will t.__._..__ ___.i__.-__~ not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream,
_E._ _I.. _ _ , _ ~ _ ~ . ; . ~ ~ I f ; ' I I ~ ' ~ I ~ j ' i i j ~ i etc.}.
r._ r j i f I I F- ~ - i i r--- i ~ ; _ fi~ i 1 I
i___..___.~ . - I - _ _ I k _ - --f _ _ _i~_ , ~ I The measuring device used to determine the sediment elevation shall be such that it will pp++++++~+uqy i I i ive an accurate de th readin and not readil enetrate into accumulated sediments.
4 k I ~ ~ ~i I i . _ ' -.i_.-_--~__-_. _u ~ _ 9 P 9 Y P p
I i I ~ ~ _ I i ~ I t ! j a I I I---- - ---i-------------~------ When the ermanent ool de th reads 3 feet in the main and the sediment shall be ~ v,~ i I ~ 1 ~ ~ . I
-p ' I I i I i ~ ~ ~ I ~ ' i I - -i-.--- --I-- x .__-_i._____~ removed. i ~ I ~ :rA Z: ! ~ U -
! I I ~ I L__ i ~ ! ~ I 1 ! ~ ! i ! ~ ~__._j..___. _ , _._.._.__i.______.~ ._._..r_...._._____..__.~ When the permanent pool depth reads 3 feet in the forebay, the sediment shall be ~ -a: removed.
I _ ~ . _ _ ~ 4 . _ _ _ _ _ - I I -F---- - I--- I 1 i ~ t I i I ! ~ y---- _ I
I ~ I , ; t ; I [La scH. 4p Pv~ E ~ I ~ , ~ t i Q_. _.V _ _ ' S. Remove cattails and other Indigenous wetland plonts when they cover 50~ of the basin I surface. These plants shall be encouraged to row along the vegetated shelf and forebay p°°°
~ ._..__..L__,_~._.,.M ~ _ I _.i__~___.. ~ ____._L.~___.-._~ GRAS D WEIR SPILLWAY f -°~r-- , , i c~~ I { I berm. l~n,I+un+
I i i I _ INV. EL= D ' I DRAIY- OWN 0 IFlCE. ~ ~~_~L._ . _ + ~ - ~ - - I - I I k ~ INV. - B k I , k , I ~ i
~ I_.._ I . _ _ ; - _T _ ~ ~ I _ ._OF ERM EL= E _ " .iNfiA°fE.fL.---~--____. _ I I ~ , 4 ~ ___i.____.._. '_____~___l_..._.__..__.- 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of ~ rY~ ~ I I sediment through the emergency drain shall be minimized to the maximum extent practical. REVISIONS BY
~ ~ I I ~ - - - i _ _ I k ~ ~ I _ .u ~ _ i-__.__~..___._ _ _ ~ i . ~
i Ito I ! ! w ' I i C I y~ ~ 7. All components of the wet detention basin system shall be maintained in good working ! i_.____-~_______T_.___ ~ ~ _ r ----._--~____._..I __._I order.
I 1 ~ ~ ( ~ I ~ I ' - Q t._.____ ~ N;~ I I
~ X I ! I ' ; i x I- I-- i ~ ~ - I L k _ _ ~ ~ _ I ~ . K 9 i ~ ~ ;c_.__ I _
I , I d~ 19 I ~ i ~ i ! I ~ t7 ~ ~ I------- 1 I I ~ i '
I i I ~ ` , I ~ ~ ~ I r - - __L - .__.,...._~ir ~ _._.__y..
1 o _ I j I o _ 1 1 ( ~ NORMAL P L EL-~ "B" " _ _ _ ~ ± H _ ' , NOR' AL P EL= , i• • { M i I I EL.-
N ~ i w I I ? I ~ j i I I I ~ _ I ~ I
N I ~ I 1 I ~ I 44 I _ _T ~ - - - I i GENERAL NOTES: I
I ~ I ~ t I ~ I ~ i ~ I- s ~ , ~ k I I I _ i_ I, j _ ._..I. _lE_ _...__..,_..__..-___i._____ _.__._._a_.._.._..__.......__._,..___ . ; ALL BMP RLL EMBANKMENTS SHALL BE COMPACTED TO 95% STANDARD PROCTOR. I _ ~ • I I I -
. I , ~ ~ ff I " ' ~ f I I BOT~fOM PO EL= ~ A ! F90TTOM IP40L A E s I • ' f.2 X _ ~ ' ~ EL= i A
I T- i.__ ~ ~ I ~ ~ r ~ ~ i _.-.t~ BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION. I ~ i _ _ __....i._. _ _ ~ ------7-_.-.._-~
m ` ~ i , i { P ~ SED GR E k I ROP I € i I ~ ~ _ I I ~ I I
3 ~-~------i _ i + i _ i`.-.~~.. I i~ i I , UTT~ 'L SH TO BEPLAN i I PROP~SED GRADE I _ ~ I ~ _ _ ~ ~ _ _ _ -I--- I Date:12~09~03 I l I_____~ _ _ _ . _ . _ _ .
~ WITH ACCEPTA AQUATIC PLJ~NT __r___ k ~ _ _ ~ ~ ~ j _ . _ F.__._-- 7 _ L. = - - ~ -i- i , ; ( ~ ~ , _ _ . i + 1 ~ Scale.
Q SPEgE-5--AS -IN--hEAN-TINE- BEF ; r_ ` . _ _ _ _ . _ _-I . - - _ _ ~ . _ _ . _ _L__PEI~MANI• C~ICE~AN OR__.._~__ I - , ~ i ; NA . _ _ . ~ ~ _._._...j I~Li~.._.~ _
I ~ I ~ fi I I I , , ' i i__._.---__-__ Drawn: JMY
7 . T------ ~ ~ - 1 ~ i
W j GhecKea: ULM
I { I "MNO" 6" TH "M"xO"6" THI _y Job: 03-07-06
A~N11~i=SEEP I i 3 I I 0
r I + ALL ONNEIION TO INLET B X MUST BE TRW J .__.___..__.__.AL~D ~ Sheet X MUST ISE
E SE WA R11GHT. ~ BEFORE YOU DIG 1 _ CALL 1-500-632-4949
PD N.C. ONE-CALL CENTER
0 a. IT'S THE LAW I
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN t DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: )AID 1 5 2704 of 1 sheets
J_
U

CONSTRUCTION SPECIFICATIONS
1 TRASH RACK 1. Site preparations -Clear, grub and strip topsoil from areas under the ~
1 f ~4 REBAR embankment to remove trees, vegetation, roots and other objectionable ~ material. To facilitate sediment cleanout and restoration, clear the pool area of ~
TOP OF RISER all brush, trees, and other objectionable materials. Stockpile all topsoil or soil 1~ r Q ~
~ I containing organic matter for use on the outer shell of the embankment to N ~
I facilitate vegetative establishment. •
I I I I 2. Cut-off trench - Excavate a cut-off trench along the centerline of the earth fill 4 oo ~ TRASH RACK embankment. Cut the trench to stable soil material, but in no case make it less ~ N
I PERMANENT PRE-CAST CONCRETE DROP BOX TOP TRASHERACK 1r #'f REBAR than 2 ft. dee The cut-off trench m t , W ~O p us extend Into both abutments to at least iJ1
I TO BE ANCHORED IN CONCRETE TO PREVENT TRA FLOATATION. SEE CHART FOR SIZES. the elevation of the riser crest. Make the minimum bottom width wide enough r
~ TO TOP OF RISER "H" PRE-CAST CONCRETE BOX v N 0 To BE PLACEn AFTER coNSTRUCnoN. to permit operation of excavation and compaction equipment but in no case less ,N ~ ~ ~
~ ~ MAXIMUM SEDIMENT STORAGE LEVEL ~ ~ DRAW DOWN ORIFICE TO BE ( ANCHOR IN CONC. TO PREVENT than 2 ft. Make side slopes of the trench no steeper than 1:1. Compaction ~ ~ U w ORIFICE TO BE I FLOATATION. regUlrementS are the Same aS those for the embankment. Keep the trench. dry •?.r ~
6 BELOW DRAW DOWN ORIFCE INTAKE #5 WASHED STONE FILTER COVER PLACED IN RISER AT A 45' ISER AT A 4s• durin backfillin and com action o erations. NORMAL POOL ( 9 9 P P ~ ~
~}5 WASHED STONE FLTER COVER OVER DRAIN PIPE, 12" MIN. THICKNESS ANGLE FROM NORMAL POOL OVER DRAIN TILE, 18" MIN. THICKNESS ~ ~ ELEV. TO INTAKE 1' BELOW NORMAL POOL ELEVATION. TAKE 1' BELOW I I U O ~ foL ELEVnnoN• 3. Embankment -All fill material should be clean mineral soil free of roots wood ~ z I I PERMANENT PRE-CAST CONCRETE DROP BOx > Y ~ ~ ~ ~
- 20' I I FLOATATIONHOSEE CHAR~NFORTSIZES,PREVENT vegetation, rocks, and other objectionable material. Scarify areas on which fill ~ ~ ~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ~ Z 0 0 is to be placed before placing fill. The fill material must contain sufficient ~ ~ ~ ~p
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ~ ~ 0 0 0 0 0 0 0 ~ ~ BARREL 12" I I moisture so it can be formed by hand into a ball without crumbling. If water ~ ~ I ~ can be s ueezed out of the ball, it is too wet for ro er com action. Place fill ~ ~
~ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I I BOTTOM DRAIN VALVE STEM material n 6 to 8-inch continuous la ers ov P p P ~ ~ y er the entire length of the fill area 0 I SUPPORT BRACKETS AS REO'D. and then compact it. Compaction may be obtoined by routing the construction 0
D00 000 Q ~ I I hauling equipment over the fill so that the entire surface of each layer is 1~1 p ~ ~
I I traversed by at least one wheel or tread track of the heavy equipment, or a ~
;r Fe ° s' ~ ~ ~ 20 LF "K" DIA. PERFORATED DRAIN PIPE w w I I compactor may be used. Construct the embankment to an elevation 10% p,a W
GROUT BOTTOM DRAIN ~ 20 LF "K" DIA. PERFORATED DRAIN PIPE 36" MIN. AS REO'D TO PROVIDE A TTOM DRAIN I Ij higher than the design height to allow for settling. Subgrade and fill to be verified PROVIDE A ) and tested by Geotechnical Engineer. V~
CONCRETE ANTI-FLOTATION BLOCK WATER TIGHT CONNECTION. :ONNECiION. I BARREL I 4. Conduit spillways -All conduit materials shall be as called for on the plans
SEE CHART FOR SIZING & VOLUME. sECr~oivw-A ~ (Schedule 40 PVC may be used for sizes < 12" diameter).
CONSIRUC110N NO RMANENT BARRE DROP BOX WITH \ OVER-EXCAVATE CONTRACTOR TO INSTALL PE L, - _ J 5ecurel attach the riser to the barrel or barrel stub to make a -EXCAVATE I ' " Y
ANTI-FLOTATION, DRAW DOWN ORIFlCE, TRASH RACK AND EMERGENCY 1' DEEP FOR DEEP FOR j.`°•; watertight structural connection. Secure all connections between barrel , e._. - ; . I INSERT PERMANENT RCP BARREL sTORAGE = ~ sections by approved watertight ossembiies. Place the barrel and riser on a
SPILLWAY AS PART OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. SILT STORAGE INSTALL PERFORATED DRAIN PIPE AND STONE FlLTER. ONCE ALL - ~ = { INTO PRE-CAST CONCRETE RISER. firm, smooth foundation of impervious soil. Do not use pervious material such ~ N PVC BOTTOM DRAIN 4MTH INVERT IN OF BARREL =BOTTOM OF POND as sand, gravel, or crushed stone as backfill around the pipe or anti-seep~'~ ~
DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE °K' PVC BOTTOM DRAIN "K" GATE VALVE & SHUT GATE VALVE & SHUT-OFF
ALL SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. coNCRETE ANP-FLarAnaN BLOCK collars. Place the fill material around the pipe spillway in 4-inch layers and E--~ ~ SEE CHART FOR SIZING & VOLUME. CampaCt it under and around the pipe to at least the same density as the O N
adjacent embankment. Care must be taken not to raise the pipe from firm ~ ~ M
~ ~ contact with its foundation when compacting under the pipe haunches.
NOT TO SCALE NOT TO SCALE ~ O ~ Place a minimum depth of 2 ft. of hand-compacted backfill over the pipe
spillway before crossing it with construction equipment. Anchor the riser in to O place by concrete or other satisfactory means to prevent flotation. In no case ~ „ L~
DESIGN DATA should the i e conduit be installed b cuttin a trench throw h the dam after Q~ DESIGN DATA SUMMARY POND 1 PP Y 9 9 ~
o tom o the embankment is complete. (/'1 I o tom o on lev, r-i
'B' Normal Pool /4 'C' To of Rise I' Normal Pool Etevatlon 696,00 N 5. Emer enc s illwa -Install the emer enc s illwa in undisturbed soil. The s z To of Riser 700,10 9 Y P Y 9 Y P Y ~ ~
lYA1~A p D Spillway Invl ' p 706,00 achievement of planned elevations, grade, design width, and entrance and exit C I Spillway Invert Elev. ~ Q.~ O d'
~Qaw Spillway Wid' 'E' Top of Berl Spillway Width [feet] 10 channel slopes are critical to the successful operation of the emergency ~ w 708,00 spillway. Top of Berro Etevatlon
'F' Barrel Leng g 0 N Barrel Len th [feet] 80' O
'G' Barrel Size i' Barrel Size [Inches] 18' RCP 6. Inlets -Discharge water into the basin in a manner to prevent erosion. Use ~ ~ 0
'H' Drop Box SI I Draw Down I' Dro Box Slze [feet] 2'x3'x12,10' diversions with outlet protection to divert sediment-laden water to the upper ~ (p p end of the ool area to im rove basin tra eff' ' c . O O Q Draw Down Orifice [Inches] 3 p p p Icien y O
'J' Intake Elev. I' Intake Elev, 699,10 p
'K' Bottorl Dral 'L' Antl-flotat4 Bottorl Drain Slze [Inches] 6' 7. Erosion control -Construct the structure so that the disturbed area is minimized. W O ~ ' 6'-0'x4'-0'x3'-6' 'v rt surfa a water awa from bare areas. r ~ ~ ~ ~ Antl_flotatlon Block DIM, DI e c y Complete the embankment befo e Q
Anti-flotatl Anti flotation Block Vol, 2,96 CY MINIMUM the area is cleared. Stab1ize the emergency spillway embankment and all other Q. ~
'M' Antl-Seep C 2 Year PI I' Antl-See Collar Slze 4-6'x4-6' W p disturbed areas above the crest of the principal spillway immediately after ~ 2 Year Peak Elev, & Discharge [cfs] 700,08 & 0,47 construction). a
Pre-De' Pre-Developed Run-Off [cfs] 41,68
Post-DI 10 Year Pe Post-Developed Run-Off [cfs] 67,25 8. Safety -Detention basins may attract children and can be'dangerous. Avoid 10 Year Peak Elev, & Discharge [cfs] 700,77 & 18,47 steep side slopes, and fence and mark basins with warning signs if trespassing
Pre-Deg Pre-Developed Run-Off [cfs] 74,08 is likely. Follow all state and local requirements.
Post-D. 25 Yenr P. Post-Developed Run-Off [cfs] 117,60
Pre-De' 25 Yenr Peak Etev, & Discharge [cfs] 701,66 8 31,28 Pre-Developed Run-Off [cfs] 92,64
Post-D~ Post-Developed Run-Off [cfs] 146,30 ANNUAL INSPECTION/MAINTENANCE PROCEDURES H
~ Year Pi Pre-De~ ~ Year Peak Elev, & Discharge [cfs] 702,43 & 32,20 Pre-Deveto ed Run-Off [cfs] 106,52 ~ P
Post->1 Post-Developed Run-Off [cfs] 167,74 I. Annual Inspection: Annual inspections shall be scheduled b Cit of Concord and
B B 100 Year Pe Pre-De' 100 Year Peak Elev, & Discharge [cfs] 702,95 & 32,80 Y Y Pre-Develo ed Run-Off [cfs] 115,75 Owner to be performed an the first of June each yeor.
Post-DI P Post-Develo ed Run-Off [cfs] 181,99
II. Inspection Activities:
W H
CATTA CATTAIL T ha Latifolia , 1 Gallon Size o) Testing of the emergency drain pipe valve. M"'~ ( YP } b) Visual inspection of drawdown orifice. i~ hH
7 PICKET c) Usual inspection of the trash rack at the intake orifice. H PICKERELWEED (Pontederia Cordata), 1 Gallon Size d) Visual inspection of the emergency spillway. TT 11
V e) Visual inspection of the pond rim and slopes. r!>r~ A
s~tw~rpt~~ t%~-~t? BLUE- I I Scir us Validus 1 Gallon Size f) Measurement of the wet pond depth at the dam end of the w F+~ BLUE-FLAG R S ( p detention pond (Distance from permanent pond drawdown orifice
NOT TO SCALF invert to bottom of basin). /n~ . A EDGE OF POND _ _ _ F~
18'-0" #•-SPILLWAY MAY BE - - - - ' - - ' ' ' g) Visual inspection of oil stormwater structures on the served site TT~~ ~ H in~a feeding the detention pond. V1
ARIE VARIES WEGETATED INSTEAD ARIE "D" (MIN) ARIE (MIN) OF PAVED IF cJd(~ h) Visual inspection of the total site drainage basin for adequate f.y
CONSTRUCTED _ TOP OF BERM EL = E" ground cover to stabilize site. J f i) Visual inspection of upstream (off-site) areas feeding into the site W
1'~~.. ~ ? / ENTIRELY IN CUT. `nO~ = raina a basin for otential off-sit im ntation sources. ao~ d g p e sed a l/~~~•
SPILLWAY INV.= Dq VARIES SPILLWAY INV.= "D" 3 \ a J r1 ~ III, Maintenance activities shall be performed as follows:
1 2 \ ~ } o F.y ~noa _ V1
EL= " ' \ cJd~ ~ 1. After every significant runoff producing rainfall event and at least monthly: o a
~ SPILLWAY WEIR UNING'~ ~ i H~ a. Inspect the wet detention basin system for sediment accumulation, erosion, trash
7~4 ~ W/ 10x10x10/10 WWM. umulation ve et ted c ver an eneral condition. ~ ~ acc g a o d g NU} ~
i 4' O.C. 4' O.C. cJd~ TYPICAL rYPICAL b. Check and clear the orifice of any obstructions such that drawdown of the temporary
UND ool occurs within 2 to 5 da as desi ned. EDGE OF LITTORAL SHELF P Ys 9 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
sP~f.L~Y~1Y sECTA0/Y~4•A sP~LIYAY sECT/O/V B-B mow vegetative cover to maintain a maximum height of six inches, and remove trash as
CLASS II RIP RAP OUTFACE PRDTECTION. _ ~ NOT TO SCALE MIN. THICKNESS= 12", LENGTH=6'. NOT TO SCALE - needed.
NOT TO SCALE ~ ~ 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.)
~ quarterly to maintain proper functioning.
ALAVG CENIEIPG RLGWG GL9VIEIPL/N£ ArPRbNARY,g°/LLWi4Y 4. Remove accumulated sediment from the wet detention basin system semi-annually or when
depth is reduced to 75% of the original design depth (see table below). Removed sediment
~ _T._.__~._ _ _ . _ ~ -I-- ~ ~ ' E ----1------ ;------i------------?'°--~ : -;""---'"-~"'°~"-t~""`~"'~""°~"" shall be disposed of in an appropriate manner and shah be handled in a manner that will
, _ _ _ ~ ~ ~ ~ a ~ r ~ f E .L________ , .I___. i___.____ ____l ___F ' not adversely impact water quality (i.e. stockpiling near o wet detention basin or stream, etc.
, _I - I _ i_ r - ~ _ _ ~ ~ I r _ _ _ . ~ I ~ i ~ j ,i ~ I _ _ - i ~
~ ~ ~ ~ ~ a _ _ I ~ i . ~ I I ~ I - ----j-------j - The measuring device used to determine the sediment elevation shall be such that it will `pgnrurnrrrr I i ` I I ~ 1 ive an accurate de th readin and not readil enetrate into accumulated sediments. r~~h i i ~ 9 9 P
~ _ ° ~ ~ I ~ ~ ' - - - - I a i i I ~ L
- - - I ~ When the permanent pool depth reads 3 feet in the main pond, the sediment shall be ~ Ov.•ri~` a;•, , f ® ~ ~
1 i , ~ ~ I I t - i f j ~ II { I 1 I ~ I x _ _ __...a_. _ ~ _ ; L. I removed. I ~ ~ :W Z: I
i 4 ~ I _._._._.-i.._. I I ' _ 7 ~ I ~ 1 I I ~ ~ 1 ~ _ ~ I _ _ I When the ermanent ool de th reads 3 feet In the foreba the sediment shall be ~ • n -a _ ~ =
I ~ ~ I ' _ . L______ ____L__.__-_ __.I_____._.~_. .4 T--_._-- _ -F.-_-. -1.-- I-__ -l j rt ~ i --i----__._-r- I i ~ ---I--_____, I I i ; i _ _ removed. - _h . I _i ~I-- __.___i - f _ _ r i I~ ~ d J
I ~ I I _ __.__I _ _ _ , _ . _ _ _ ~ _ _ _ _ - _ _ _ _ ~ ~ ~ ~ i ~ ~ ~ ? ~ ; ~ j I GIA.I SCH. 4~ PVC i--- -----i-- - --'r-- - 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin VC C surface. These lants shall be encoura ed to row alon the ve etated shelf and foreba o`~
~ I _ ~ _ I _ _ ~ _._._,______.-i_ t~A D WEIR SPILLWAY 1 ~ I c ~ .~I"-. _ i I berm. rrnN~nn~+~
~ ~ INV. EIr- D I DRA1Y- OWN OkIFlCE. .-x _ c s - _ _ ~ ~ ~ ~ r i , " ~ j` , .INV. 8 j
~ ~ ~ _ _ -s- I ; _ ! __.QE ERM EL= E .,~-1- ~ ~MFTA' - °t ~ ______'____.__.I !_~__.._-E 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of I , I , sediment through the emergency drain shall be minimized to the maximum extent practical. REVISIONS BY
w_ ..i ; I_ r._.-_.. _ ~ _ _ u
~ w I I I ~ I I I , I ~ ! ~ ~ I ~ ~ _ , r _ - . --r- -t I _ _ - - - - ~ I ~ I ! ~ ~ n f the w t i n ins t shall b maintained in ood workin ! ~ ! ~ ~_____._1__._.._.___..;_--.__-.1._._____~_____-_ 7. All compone is o e detento bas ys em e g g ~_a_._~. - - - - ~ -I---, ; i i order.
Q i. ~ __.__.a______.~..__--~---..~. ____.a.___...~ r ~ -I I ~o i
s _ i _ ~ ~ ~ ~ ~ I I , ~ i ~ Q ~ , ~ I I ~ ; ~I- n:. e r I I ~ r l'
i r - _ _ _ _ _ 7 _ -..I-_._.__.. _ . _ J.._ ~ i - ~ . _ _.______i_ _ _ _ fig.-___-.._ -i I - _..--t--- __-r _
I 3
o I j I I _ " . ~ ~ ~ ! ` ' ~ I I I I NOR ` AL _ .B. , ~ , ~ i ~ - o NORMAL PO L EL-~ 8 I I ~ i I ~ I I _I B
( l I I I i ~ .-h._....... -____L ~ i ~ _ ----f
N f I I ~ I A i I C I ~ 4 _ . _ _ _ _ _ _ _ _ _ _1.__ _ i GENERAL NOTES: I , ~ ~ i
~ ~ ~ I ~ 1 1 I 3 i ~ ~ I i }~p I oF_I -._BOx._.__ _ _ __,___L- _ ' __..._.____._.-__..~_._.____~___...__I ALL BMP FILL EMBANKMENTS SHALL BE COMPACTED TO 95% STANDARD PROCTOR. fi--
a i ~ I p p ~ I I 1 - = A ~ I ~ BOTTOM PO EL- A . i 1 { ~ ! OTTOM POOL _ ~ PO EL ' "A' ~ 1, 76 _ __-_.-___i__~_.__i____.__ __.___.._{.-____..__-0_.____.j BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION.
I ~i ~ I ~ _ ~ I _ _ . _ _r_ T ( ~ ~ i _ + r_ _ ~ , i ~
d CA~~.__. _ ~ ~ - - - - - - - rn j ~ k ~ ~ I i I PROPt~SED GR DE I I I ~ I i -~-t--_.. _ ~ ;
3 ~ ~ r__~._._...~ ~ ~ ~ -____,i.___.._ ~ _._.lv.-__.~_~ ~ a ~ } ~ ~ " + PROP~SED GR' DE f Date: 12/09/03 I ' . E I ;
= _L_ LITTORAL SH _ _TO_ BE}PLAN _ . _____I ~ ~ . 4 . _ ~ WTH ACCEPTA AQUATIC P NT JE! ~ ! ~ i ~ I, I j i I ~ , t t F I _ _ - _ _ti ; Scale: - OC.
Q t I L_ } ~ ~ _--.._._._.~SPECIE$-AS-- WN-IN--~4N-TIN ET:- _I_.._ , N/A I
z ~ I_. ._.rt_.____ _ ~ _ - ~ - l._P_EI~MANl7~~_COHCRETE. ANCHOR _ } Q I ~ ~ ~ ~ ' 1~ ~ I i y, r . ` JMY _-._._._.__~.__._._._a raven:
_J_ . . L
! f i Checked: DLM
"M%0"' 6" TWC i. ~ i . Afl11~5'E "M"x0'_4" TMI Job: 03-07-06
-C _AIf"- EERMLLARS;
- - - - - - - - - - - - - - - o i I ^ ALLONNETION TO INLET B X MUST 1 i Sheet ,T BM MU$T BE
co - - q-A SEALED WA R=144T. - f BEFORE YOU DIG 1 CALL 1-800-632-4949
t°EJPPDYQ! LAIP-_1 rY PRIMA o~ 'Y_FP/LL.09.Y U N s PD- 1 ! I N.C. ONE-CALL CENTER
IT'S THE LAW I
a E Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESI( )NT DESIGN ASSOCIATES, P. A. Owner: Approved: Date of Issue: AN 15 2894 of 1 Sheets
J
U

~ - \ / ~ ~ - / ~ ~J ~ ~ ~
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~ ~ . v , 712 ~ ~ ~ ~
- t- ~ _ m ,:Uw
1 _ _ _ _ • - i % JCS • / ~ ,..<.4.. V ~ ~ 00 Hl R ~ 0 op
- _ . ; . r' ~ / _ _ . 712 716 _ a o 0 ~z~
' 710 72 724 Q ~ ~ a~ ~
/ , 728 i / ~ • ~ W ro 4:>~
• 708 • , - Prr s - - _ ~ ~ y~ ~ w 0
i 70pP _ ~ CrIC , O t~ 0
, ~ 710 1: ~ ~ ~ A , 710 728 ~ ~ ~ I ~ ~ R30.00 ~ ~ q O ~
~ r ; ~ , \ ~ ~ _ ~ ~
~ , % _ _ 25.00' _ 708 ~ - ~
~ R-30.00 ' ~ _ r- ! ~ ~ _
i FU'ruRE _ 710
1 EXPANSION ~ ~
31,20 SF ~ ~ ~ ~ PAR"I'S R45.00' NO SCALE -
I ~ ' ~ ~ - ~ ~ ELI~'ERI' 724 _ _
_ p U N O r-
; s ~
TRAILER
' KING ; 155 050 SF pA • STORAGE 708 ~ R/S .800 g ! ~ - ~ ~ w
708 •F• 710. PROP FF 711 + 708 /720 _ _ _ ~ _ ~ _ _ ~ (n p
i ® MACyI.~~ .00 ® E SHO f, o o
~ FAB ® '000 708r RIC,q 1T0 ; ® S.F. R/D w _ ~ • p
22, A SHOP 8.Op0 ~ TRANSPORT 400 S. ® S.F• ~"iNisn H. ® EXIT ~ ~ ~ l17
_ i ,cu,~ssi~ ~ r ,;,L, a ; Slfl: ~ ~ N
~ ~ - s Z p
0 ~ ~ 15.00' 0 '716 ~ Dpi o ''71s ~ ~ N011~35 ~l.llb'(1D b31'dM a C/~~ ~
® 31 p.~ ® 'S~~'~'1S ~ 1'I W w I
~ Sk.y6 RE 9000 L } 2338 S .N N EOOl ~ Z 1~0 O -
~ ® S.F. P. t p ~ 712 712 ~ ~ ~ r 0 U t0
; ® 60.00' i ~ Q' ~ ® _ o ~ ~a
® / ~ df10b~ ~0~ l SgN~I,~ ~ v - - ~ o 4690 15 0938 ~ o # w v
® ~ K 708 "708 ' , ~ ~ • ~ ~ cd t~ ~ Toe Now or Formerly a
18.00 ~ ~ c
y A i ' I ~ ~ SSE ~ ~ ~17BL~.~ & ~ Cit ;of Concord ~ w ~ p y~ ~
710 37 FINISHI:ti' 0 : .fi5p S.F'. C ~ 708 Deed Book 4059 Pa e 299 a ~ 9
710 ~ 704 1 r, .704
9.001 oQ ~ C 1
o ~
I c~ ~ 704_ -k;i Oo a ® b f; i ~ / ,
I ~ ~ ~ ~ 7 700 H
u'°` 1 ~ ~ a o ~ ~
~ o ~ ~ ~ ~ o +~i I P o ~BRg • pAf ,
~ . ~ NT , ~ 00 °p~ooo ~~j7 Mp 10,0005 , ~ H
000 ~Ni d a
' - o0o TORM WATE 35 p. s. o~ Qo
s 6 ~ o00 - osp ETENTION oo
sr .:708 °p0p0~oo oR. POND 1
\ 708 d ~ ooo0pooo 1' S S. °pooo ~ -NGIN F. ~t?ployo 0000000 S ' ~ •
Entrance 0o TOR. 0 0.
' BOT.=696 ~0°' ' ~ ~ ~
~ 1 I - Fence F' n E 5 6c
' 69 696 ~ A ~ ~
1. .s RAN ~ 708 ~ o i o n.oo~ C f' ~ ~ 692 ~ _ I""1 ~ 688 \ W
r ~ e ~ 708 ENT N E qt ERHEAI} U~
o I :CONNECTOR ~w w
~ ! ~ ~ ` •R 688 1 . 'R i
708 ~ ~ ~ A ,!B ~
ti ~ ,!B " \ j \ 30.0 ' 1 6 710 sao' 692 ~ 1~
\ ti~ w ! - ~
; 4 ~ ~ - 71
\ , \ ~ ~ PR POS - _ i
8 Gate v \ 0. 0 ~ EN E
~ 7oe ~ _ \ ILDING - -
_ _ _ .o - ti. _ 4
- g•g~. _ i 710 1 ,
\ 92 - \ _ , ~ -
- i \ - 696 - _ / ~
28 5o B 700 . - - _ 708 1 9.12 U FE ~ _ ~ - _ ~ _ _ , ONG I- I ~ ~ Fen ~
\ 1 ce e ~ ZONE V8 D/RE , 3 37 •39 SI[~E ~ ~ ` -
35' W NTIAL :824.1 110.53 SSE ~ 7 8 1 Tot , V1
al ~ ebar 173.7 , ~ ~
# 5 ~ 1 Iron Pipe / 4 I ~ ~92 ~ ~ ~
~ # - ~ ~ ~ y
Rebar 5 # ED TO ~ ' > > TO D 5 24.14 _ S88 21 4 _ i ~ s~ . ~ ~ . ~ - I % ,
~5 .6471 6 Rebar - ~ #4690-95-9309 THE ITY CO ORD 6 692
-or Qrly / Q N w or Formerly r ~ , ~ ~ ~ ~ ~
hris i~ie M, int P. I T IVISION /
~ S. w & Christine Myint \ 704 ~ 62 ,tea e 1,~3 a 9 \
D e Book 762 Page 153 Noo s Subdivision ~
Lot B than Woods Subdivisi n / i' r 0.465 Acres
20 ~ 7 Book 20 ,Page \ ~ 700 20 236 S . t. t. REVISIONS BY
N PROPOSED ~ q #4690-05- 348 0 /
~ 30,000,S.F. Field Loca ed " ow or Forme y cv i
N HANG~,R Weal a n s Shw U. & Chnstme Mount ~
I I~ ~ -
Deed Book 762 Pa e 153 I'.F, 705. 0 9
4 h n Woods Subdiv sio ~ PROPO ED Lot # Bet a y ~ /
Pat Book 20 Pa e 7 ~ 69s ! ' ~ TAXI- . g AY
a r _y
~ ~ 1 Thole _
~ - ' - - - - - ~n
ylnt ~ ,
ane _ _ o
6 z 0 Ig o f _ a
Y 692 _ _ ~ 692 _ ~ ~ ~ 688 " o~ Date: 10 20 03 ~ ~
. 1 "=60~ Hor.
_ ~ L`i', 684.- ~ - a - ~ 688 16 / 1 , 1 S \ - ' 680 684 , > ` 680 Concrete s°°~e~ 4' CONTOURS
676 676 3.83 AC Hw o Monument ~ Drawn:
r_n ~nuTr ~r ~ ~4 Rehctr ~b an s72 n nn Nf~~ 41 5~ E ~ ~ BEFORE YOU DIG 1 , „
~IlOlll 1'~~ 1JV171W I \ / _ ~ .vv r 6/'L v v.vv CALL 1-800-632-4949 unecKea: ULM
o 30 so 120 240 246.8E i 5 ebc 00 5 ebar 46 7.39 N.C. ONE-CALL CENTER \ ITS THE LAW Job: 03-07-06
/ r-- S89 41 56 W # 1 Ir n Fxistlnc W t r Tie; Line
4 54 , ~g S8 Pipe Fen e l Sheet
ivision (m FM 1 1 2 Iron
L 0 t 1 h - 60 - !k , SW_ I
e 7 4 Rebar Pipe 1 1 Bethany Woods Subdivisi
M WITH THE WRITTEN CONSENT OF PIEDMONT DE Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN UST BE WI NT DESIGN ASSOCIATES P.A. Owner: Approved: Date of Issue: ,7 2 77 2 F? of Sheet MO 1

,~~~f~ , I~VU
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/ ~ ~ / / _ ~ . ~ \ i ~y n J) ~ ~
' L \ ~ ~ / / o0 ~ a Iii ~ , ~ ~
_ ~ ~ ~ ~ ~
/ ^'1 ~ J~ ` ~ 1 r ~ v ~ U~ ~ e
~ ~ ~ ~ , ~ ~ / ~ ,STOCKPILE J N Q„ ~ ~oc~
710 - n AREA ~ 1~1~~ p`'~r 1 ~ll~ ~RQU~ ~ ~ ~
720. ~ ~ Q ~ ~ _ 71 ~ ~ , J 4~ m 444 0 ~ w~ O 1 ~ ~ ~ ~
EN ; , ~ 7os fR Jl 0 03 ~ o C 12 ~ ~ v DE
3 ~ A~ ~ , ~ i ~ STAB CONSTR ION ENTRA ~ ~ ~ ~ ~ ~ ~ ~ 708 F ~ ~ T~ ~ ! 7 06 R DETAIL 30.11. R~ ~I T 8 w
NT Y i GRAVEL & RIP FILTER PERM BASI E , \ ~ ~ ~ ~ i 706 ER DETAIL 30.12 10~ Op< ~?r ~ IASI 730: j~' ~E~e~ ~ 00
Ck D 7os A~~~ D~AI. rf U ~ ~ ar ~ ~ o
, ~ IRE FABRIO INLET TECTION V ~ - ~ TECTION ~ _ t` v ~
r ' a PE TAIL `ON SHEET G TYP. M ~ =T G TYP. W ~ ~ ~ v ~ ~
,r, , \ ~ ~ 1 CB4 ~ D ~ ~ U~ ~
~ ~ , / n N78' ~ „ I d~~ / p B 5747 NIg•~ J~ ~ a~ c.0 57 4j„ 3 ~ ~
~ ~i~ 573~~4' 99. a ~ ~ / 676.4 676.4 ~ ~ y
' ~ ~0.2J' , 0 6 ~ 24" RC ao 730 J !~1 p ~ ~ ~ TEMPORARY DIVERSION SWALE PER o
j o i P!rsro _ 08 PrN ~ ~ ~ ~ D' ~ ~ 7 10 ~ PoACriC DE"F,~IL 30.05 TYPICAL SWALE TO ~ ~ ~ A.
~ EqR~ j ~ I / ~ ~ i , ~ ~ REMAfN AFTER CONSTRUCTION TO n DIVERT WATlrR TO HW3. - ~
' fi' ~ ~ ~ R30.00' R C~ TD 1
, ~ ~ 25.00' ~ ! TE RARY DIVERSION SALE - S"' o ~ ~ ~ v
` R DETAIL 30.05 TY ICAL RSA R30.00' ' ~ , f - 708 ~ T ~ ' NO SCALE
P , y
' 1+16. 6I ~ ~ o., UON
@ ~ _ ~ L E G END O
~ PARTS r BUS ~ DELIVERY ' ~ ~
n ~ C KIN, 799 742 . TRAILER RB 1 TEMPORARY RISER BASIN (V
cos , , - ~ , 9 74Z SF ~ ' ~ STORAGE PER DETAIL 30.0E s ~ ~
_ _ 18.360 A r Pq - _ TEMPORARY DIVERSION SWALE ~ ~ 3.360 AC TD ~ cn o - - _ PER DETAIL 30.05. O
0.179 Acres 155,050', RTS DI7 ~ ~ O
3 5 S. F. n PROP FF 711 + - 2'800 2, 6 q t ( ~ ~ S.F, J RIP RAP OUTFACE PROTECTION ~ ~ O ~y ~ PER DETAIL 20.55. N ~
Field Lgcoted ! 31. MA • 1--~ ~
Wetl4nds ® CN~NE S FABR ! 7,00 NOP ICgT ~ ® 0 S.F IONS ® ~ NOp 710 TEMPORARY SILT FENCE wo W ~f ~ZN
C ~ ~ 22,40 N~' 8, G 8 PER DETAIL 30.06. ~ ~ ,ooa S.F ~
31 sH c RABBIS ® '-~a _ a ~ A STABILIZED CONSTRUCTION ENTRANCE
- / SNEEIME7 ~ _ ~ PER DETAIL 30.11. ~ py - U1
N NO RANSPpRT ~ #4690-15-0938 Q - N 8p~ XIT 15.00' TOP OF SLOPE BERM - r-
~OCK V Now or Formerly TSB PER DETAIL 20.50. ~ U ~ ~ J City of Concord ~ Q, ~
~ S U B ~ t ® A T SSEMg~ TIRE Deed Book 4059 Page 299 WIR FA RI IN T PR ~ ~
9,000'S Y U ~ ® ~F• Y 2,33 ® E B C LE OTECTION ~ ~ Q 8 S,F y PER DETAIL ON SHEET GR 2 w ~ ~ ~ ~ ~
453 461 F Ep 6 .00' Q l ~ ~ GRAVEL & RIP RAP FILTER BERM BASIN ~ C
10.410 AC W J PER DETAIL 30.12. ~j O
- i ® ~ •I ~ `4.. DI8 ~ ~ n. In - - - EXISTING CONTOURS
I I D ~ ,4 ~ I f. - o
i ~ ti AS "`4 3 P. ~ SEMB~y PROPOSED CONTOURS
3+e & FINISHI ~ o r 7 37 N i ~ LC ~ LIMITS OF CONSTRUCTION TYPICAL ( )
io n TD 710 ~ . v. , 650 S. F, G a , E ,dS
o 9.00' / 1 ~ oo S ST SOIL TYPE BOUNDARIES (TYPICAL) _ ® a? ~
o ~ TEMPORARY SILT FENCE SPOT ELEVATION MARKER
~ I p f - v PER DETAIL 30.06 TYPICAL X (T.C.=TOP OF CURB) ~_r ~ T.C. a
i ~ V I ~ 0 ,ti.~ i ~ ~ b ~ 0 H
Ce~D2 . ~
3~4" Iron \ ~ Tp °o ~ • ~ ~ H Q ~ E-+
Pipe I ~ ~ P v1 W J F-i ~ STORMWATER r~
- # ® S.F ~ DETENTION~POND O
I 0 ,.,5 ! J~ t ~ PER DETAILS ON o
I TEMPORARY RISER BASIN #2 i 35 p.s. SHEET PD-1 PERMANENT DETENTON POND T J' A OSp ~ 0 BE USED dS
I 1 MP ARR L & 18" PERFORATED ~ MP RISER 5 C 8 E ~ ~ t. ~ 10 E I ANCHOR RISER IN 1'-6"x1'-6"x1 » 0" DEEP n Shy E N E d d $j ~ AS A TEMPORARY RISER BASIN DURING Zj OR.
I CONCRETE BLOCK.1NSTALL 4 -6 ANTI-SEEP ~ , ~ CONSTRUCTION. SEE.. DETAILS ON SHEET PD-1 A NG1N 5 S.F. ti _
I AR N ARR T W C N R IN OF 70 COLL 0 B EL JUS BELO E TE L E ~ S E ~ ~ ro Z R. BOT.=688 10' CONCRETE LINEO EMERGENCY
I BERM. CONSTRUCT 8' WIDE TRAPEZOIDAL ~ SPILLWAY. PER DETAILS ON SHEET PD-1 0N M..~
I EMERGENCY SPILLWAY WITH 3.1 SIDES IN VIRGIN W NCE I SOIL. SEED ENTIRE;'~ASIN AND SPILLWAY UPON ~ ~ L Y ~ 10 21 10
~ COMPLETION OF C~7NSTRUCTION. BOTT0~1 OF' ' ~ R DI21 36' y RI3 M+1 2 36' R ~ D W Cd
O I - -ti92 PIL JAY S p 10 ~ I BASIN-690, TOP•,,0~ RISER S L ~ C810 , INVERT=693 & TOP OF BERM=694 A~ ~ CO ~ I ~ a ~ 26.00' ~ E TF ~ w GENERAL NOTES: DI2 FES
O ~ I PER DETAIL 30.01 TYPICAL 708. _ U E EP , TRANdPO ES2 1. BOUNDARY SURVEY INFORMATION PROVIDED BY PIEDMONT DESIGN ASSOCIATES P.A.. 'P i o ENT 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING w
_ AK ~ ~ I ~ in ~F` a s. OVERHEAD y CONNECTO HW30 UTILITIES SHOWN OR NOT SHOWN ON PLAN PRI R T ANY ( S) 0 0 GRADING ACTIVITIES.
N I r ~ 20.00' Z , ~ ANY CONFLICTS SHALL BE BR ~ w ~ OUGHT TO THE ATTENTION OF THE ENGINEER. ~ H
" T MPORARY SILT FENC RB#2 T - 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. ~T/~~
I ; 6 ,294 SF M - . PER DETq~1.L 30.06 TYPICAL S FENCE ~ - ~ VL ~ ~ DI 8 JB~ 4. ALL EROSION CONTROL MEASURES MUST BE MAINTAINED UNTIL ALL DISTURBED M~ w
I r ~L 1 9.00' '30.( I ~ 1 / '30.0 ' rr^^ V1 ~ 06 AREAS HAVE BEEN PERMANENTLY STABILIZED. ADDITIONAL MEASURES MAY BE i SB
~ l Tae ] REQUIRED AS SITE CONDITIONS WARRANT. ~ ~ 5. H T
I 'FLUME GATE L_ ~ S ' _ ! SEE S EE S GR-2 AND GR-3 FOR EROSION CONTROL SPECIFICATIONS AND DETAILS. PROPOSED , 6. ALL STORM INLETS SHALL BE PROTECTED BY WIRE FABRIC INLET PROTECTION ~ 1~
_ _ _ _ _ ~ S CB1 !GATE y _ _ _ ~ 4 0. 0 2' FLUME o ~ y ENGINE v/
_ _ , _ __T; 06 05.88 DI1 _ _ _ _ ' ~ 2' FLUME ~ BUILDING J AS PER DETAIL ON SHEET GR-2. SEE SHEET GR-2 FOR STORM DRAIN DATA. 7. ALL STORM OUTLETS SHALL HAVE RIP RAP OUTFACE PROTECTION AS PER DETAIL 20.55. ,0 -
i~ ~ _ CB12 j` 8. ALL FLARED END SECTIONS SHALL BE PROTECTED AT THE TOP WITH TEMPORARY SILT
_ o D117 ~ ~ / 04 FENCE PER DETAIL 30.06. y
2.33 x.705.8 D ~ R 'P 3~4" Iron _ i N Z ~ ~ 9. PERMANENT GROUNDCOVER MUST BE ESTABLISHED WITHIN THE PROPOSED DIVERSION p~,.~
Pipe S - - ~ 16 0 . T.C. 4 ~ ~ T ~ o , ~C. T.C. TSB J SWALES. ADDITIONAL MECHANICAL MEASURES MAY BE REQUIRED IF THE VEGETATIVE rr~~ 1~1
# 28 50 B ~ o _ _ Rebor i 9. ~ 2 U F~ER EC ~ i T o S ALONG _ ~c; ~ D s. WIRE FABRIC INLET'PROTECTION - COVER CANNOT BE ESTABLISHED AS PROPOSED.
1 1 Z LC T y 8 ~ ~NED ~+1zc ~ ~ _ 3 37 58. /RES DETAIL ON SHEET GR-2 TYP Y ~ ~.i:
35 W 39 IQEN T ~c ~ ~ 8 .1 4 Rebor 110. IAL N ~C ~ 7 s 1 Ta # 53 SE ~ ~ i ~Q 11111111111 ~ ~ ~ ~~`~~A I~l~~~i
S tal ~ , #4680-95-4434 C Q B ~ ~ 702 P
Now or Formerl ~ S 1" Iron Pipe 173 7 a + Y #4 5 ~ ~jpL 'o:0 6
Shwe U. & Christine Myint - Rebor ~n 0 , Deed Book 762 Pa e 153 S 5
g - TEMPORARY DIVERSION SWALE # Lot 1 sethan Woods Subdivision #4680-95- ~ Rebor # Y , , PER DETAIL 30.05 TYPICAL 524.1 TSB ~
m Plat Book 20 Page 7 Now or F mealy ¢ c S e U. risfine M 'nt #4690-95-9309 5 ~ 24.1- ~ 'o 4 ~ S88 1 E
~ `D d B 5 762 P' a 15 Now or Formerl TO BE DEMISED o ag 3 Y S~ ••d ~ ~P 0 BE DEMISED TO ; ~ % ~'1 0
} Lot # hany Woods Subdivision Shwe U. & Christine Myint ~':~!i~' THE CITY OF C01 ~ la Book 20 Pa e 7 Oeed Book 762 Page 153 - p PRIOR TO SUBDII HE CITY OF CONCORD. Q ~ R ~ ~ TOP OF SLOPE BERM uuW IOR TO SUBDIVISION - PER DETAIL 20.50
9 Lot 3 Bethon Woods Subdivision + 8s ~ # y 4690-05-0348 I ~ ` •U ~ Q7 ~
o Plat Book 20 Page 7 # TD ~ Now or Formerly j ~ ~ REVISIONS BY D2
`,Shwe U. & Christine Myint 15" GP DI2
~ Deed Book 762 Pa e 153 - , o. 9 1~ ~ g ~o g
rn Lot 4 Bethon Woods Subdivi i n k 0 q # y s o o ~ Plat Book 20 Page 7 p N I ~ i PROPOSED PROPOSED ~ V
~ U7 ' 30,000 S.F. cv I 0 HANGER 30,000 S.F. d J HANGER ' / U %
~ N N E' F.F.=705.00 , o ~ ~ ~ w 'PROPOSED F.F.=705.00 ~ 0.465 Acres ~ • 7 TAXI-WAY
o tf' ~ i N ~ L. j 20,236 Sq. Ft. ~ ~
of ~ 1 : 0 N ~ ~ I Field Located ~ M ~ Wetlands N J
~ ~ I _ 0 z TEMP RARY RISER BASIN ~1
~ _ _ I 167,171 SF yj11 j - ~:a-, L~J n ~ ,3.838. `AC 167,"171 SF DI24 15" RCP 12" AMP BARREL & 18" PERFORATED CMP RISER ,3.838.`AC - I25
one _ _ , ANC~IOR RISER IN 1'-6"xt'-6"x1'-0" DEEP
W 6 D Z Ig t o - _ _ CO CRETE BLOCK. INSTALL 4'-0" ANTI-SEEP I C1
f . _ y _ .ti 3 ~ _ - I 704 702 ~ CO LAR ON BARREL JUST BELOW CENTERLINE OF f RB~1 1 B M. CONSTRUCT 8 WIDE TRAPEZOIDAL
~ I r .10,.463 SF " I EMERGENCY SPILLWAY WITH 3:1 SIDES IN VIRGIN Date: 12 09 03 ~ I
cn O I `SOIL. SEED ENTIRE BASIN AND SPILLWAY UPON OMPLETION OF CONSTRUCTION. BOTTOM OF 1
Q - I - z _ Z - J833 ~i ASIN=672 TOP OF RISER=674 SPILLWAY Scale: 1 °60 HOf.
Q ~ - I ~ _ I ~ B J NVERT=675 & TOP OF BERM=676 AS 2' CONTOURS
~ _ I PER DETAIL 30.01 TYPICAL Drawn: AMY lC BEFORE YOU DIG t
;I_) v~ CALL 1-8D0-632-4949 Checked: OLM
o LC N.C. ONE-CALL CENTER
1 1 2 Iron Pipe #4 Rebar 2 Concrete ITS THE LAW I Job: 03-07-06
4 Monument 310.001 , 89°41 58 E Sheet
cy) V) 246 .89, 1 ron #5 eb ~ 77739
Lot #5 ron m Bethany Woods Subdivision , „ Pipe Pie 589`41 561 W TEMPORARY SILT FENCE GR- P ! PER, DETAIL 30.06 TYPICAL TIE Line
° Plat Book 20 Page 7 - 4' W a C-) I 1 84-539
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGP :4589-97-5422 1 A IT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue:
J of 3 Sheets
~l

_ __T r i
NARRAl1VE:
Ryan Companies US, Inc. is building a racing facility for Ganassi Racing on 6. Clear vegetation and grub stumps from all areas to be graded. STORM DRAIN DATA:
approximately 22.20 acres located off proposed Westmoreland Drive. The scope of INLET ~
work will involve clearing, grubbing, grading, storm drains, aggrgrate base, paving, 7. Strip topsoil and stockpile on site for redistribution upon completion of grading. T INVERT INVERT INVERT PIPE PIPE PIPE MIN. FULL FLOW i ~ ~ STRUC. ROAD C.L. OR T.C. INVER ti
building construction, water, sanitary sewer and associated utilities. Disturbed areas IN #2 IN # OUT SIZE LENGTH SLOPE SLOPE VELOCITY ` r
will be protected by a riser basins, silt fence, temporary diversion swales, top of 8. Install temporary diversion swales as indicated on sheet GR-1 to divert water and slope berms and wire fabric inlet protection. Total disturbed area is estimated to be sediment into erosion control measures. I.D. STATION ELEV ELEV IN #1 3 ~ ~ ~ ' a--~
22.06 acres. Upon completion of construction all disturbed areas shall be CB1 0+56.40 705.03 705.01 NA NA NA 702.07 15 28 0.50 0.50 3.72 r1 ~ ~ ~ ~
permanently stabilized with grass as per the attached seeding specifications. 9. install permanent detention pond for use as a temporary riser basin during construction. 0+56.40 705.03 705.01 701.93 NA NA 701.73 15 76 0.50 0.50 3.72 ~ ~ w ~ CB2 ~ Eo
Follow details on sheet PD-1. CB3 1+16.67 707.08 706.57 701.35 NA NA 701.10 18 184 0.50 0.50 4.21 v , N o
GENERAL: ~
10. Install all storm dram structures per plans. C64 22+55.99 708.25 708.27 700.18 NA NA 699.98 18 52 0.50 0.50 4.21 ~ ~ ~
The work shall consist of furnishing lobar and material, equipment and performing all operations C65 22+00.00 707.64 707.66 699.72 NA NA 699.22 24 64 0.50 0.50 5.09 ~ ~ U ~ o co
necessar for a cam lete installation of all work as s ecified herein and as shown on the 11. Install all underground utilities. (Contractor shall schedule connections and locations of Y P p existin utilities with a ro date utllltles and a encies nor to construction . C66 19+40.35 707.54 707.56 698.90 NA NA 698.40 30 192 0.50 0.50 5.91 Q u ~ ~ I
drawin~s. 9 PP P 9 P ) y D17 NA NA 708.50 697.44 NA NA 697.24 30 148 0.50 0.50 5.91 ~ y
• v ~ ~
1. Work shall consist of installation of temporary erosion control measures; clearing; 12 Fine grade roads, parking and building pad to subgrade elevations. D18 NA NA 709.00 696.50 NA NA 696.30 30 60 0.50 0.50 5.91 ~c
grubbing; stripping topsoil; roadway and general grading; controlled fill; utility installation; re oration of sub rode; fine grading; concrete curb and gutter; paving and 13. Place concrete curb and gutter as called for on plans and backfill with clean, FES9 NA NA NA NA NA NA 696.00 NA NA NA NA NA o ~ 3 0..
P P 9 ermanent seedin All disturbed areas shall be left in a stabilized condition upon debns-free earth. P 9 ~ ~o~~
completion of this contract. B10 5+93.33 707.37 706.86 NA NA NA 703.92 15 92 0.99 0.50 5.24 " C ~v
14. Place stone base and asphalt paving according to plans and specifications. 4.21 ` ~ o. D111 NA NA 705.70 703.01 703.01 NA 702.76 18 72 0.50 0.50
2. The Contractor is expected to examine the site to familiarize himself with site
conditions. The Contractor shall careful) read all the s ecifications and examine the 15. The Contractor shall sow seed (including fertilizer and mulch) on all exposed earth areas y p within 5 da s of the cam letion of radin in that area. Seed fertilizer and mulch shall FROM CB10 FROM CB13
drawings and details in order to thoroughly familiarize himself with the work to be done. Y p g g C612 7+50.00 706.39 706.41 NA NA NA 703.47 15 28 0.50 0.50 3.72
An work shown on the drawings or included in the specifications, or reasonably implied be of the type called for, for either temporary or permanent grassing as required. y Contractor shall ms ect seeded areas at 15 da s after initial seedin and re air all bare by either, shall be performed the same as If called for by both. P Y g p 3.72 CB13 7+50.00 706.39 706.41 703.33 NA NA 703.13 15 24 0.50 0.50
areas. Non-stabilized areas shall be stabilized with erosion control blankets or other D114 NA NA 705.00 702.40 NA NA 702.15 24 172 0.50 0.50 5.09
acceptable methods as approved by the Engineer. U N
EARTHWORK: D 115 NA NA 705.50 701.29 NA NA 701.09 24 68 0.50 0.50 5.09 o
16. The Contractor shall be responsible for maintaining all sediment and erosion control D 116 NA NA 705.00 700.75 NA NA 700.25 30 68 1.91 0.50 11.56 0 N
1. A temporary bench mark shall be established on site. measures throughout the duration of the construction project. Maintenance shall include, but not be limited to: cleaning silt out of drain structures, adding extra gravel 6 8.95 699.75 700.00 698.75 30 84 0.50 0.50 5.91 D117 NA NA 705.50 9 M
FROM DI16 FROM DI19 FROM DI20 ~ ~ ~ ~ O
2. The Contractor shall be thoroughly familiar with the Erosion Control Sequence as stated or riprap; regrading swales and washed out areas; repairing, replacing, or adding silt O
hereafter and shall follow this sequence to insure that no off site pollution occurs during fence, etc., all as required. or after construction. Any deviation from this stated sequence or plans and details shall NA NA 701.16 15 88 0.50 0.50 3.72 ~ ~ D118 NA NA 703.60 NA cn ~ ~O
have rior a royal of the Owner's En ineer and Cabarrus Count . 17. Contractor shall clean all storm drainage structures, pipes, culverts, etc. prior D119 NA NA 703.65 700.72 NA NA 700.47 18 144 0.50 0.50 4.21 ~ - d- ~ to
P PP g Y to final payment. A NA NA 700.42 15 84 0.50 0.50 3.72 ~ I D120 NA NA 704.00 N
18. At the end of the project construction and after the permanent ground cover is ~ N NA 697.83 36 128 1.12 0.50 9.98 Z D121 NA NA 709.50 698.33 NA ~ 0~
3. Top Soil: Strip all top soil from the area to be graded and stockpile on site for established, the Contractor shall remove all temporary erosion control structures and seed c ~ 696.20 36 40 0.50 0.50 6.68 R+ ~
redistribution upon completion of grading. all remaining disturbed areas. The Contractor shall remove the filter stone & wire mesh D122 NA NA 709.00 696.40 NA NA ~ I
4. Soil Borings shall be taken in the area of the building by a certified soils engineer and and all accumulated sediment after all disturbed areas have been stabilized. FES23 NA NA NA NA NA NA 696.00 NA NA NA NA NA N ~ r._N
the results reported to the Owner's Engineer. This work shall be done if directed by the ~ 0
Owner's En ineer. 19. Contractor shall "hold the Owner harmless" from financial penalty, which could be g invoked b overnment authorit ,due io Contractor's ne li ence. Y9 Y gg 0 o a c0 D124 NA NA 703.75 NA NA NA 699.89 15 116 0.50 0.50 3.72 ~
5. Fill Dirt shall be placed in the areas indicated on the plan. Fill material shall be free of o ~ 100 .50 3.72 ~
brush rubbish and other material that will be detrimental to construction of a stable fill. SEEDING SPECIFICATIONS D125 NA NA 701.75 699.31 NA NA 699.11 15 0.50 0 W o ~ ~ Rf Ln C
All fill shall be cam acted to a minimum of 95~ Standard Proctor with ro er moisture P P P SLOPES 3:1 or FLATTER D126 NA NA 701.75 698,61 698.61 NA 697.86 24 256 0.59 0.50 5.51 Q ~ ~ ~ _
control. Maximum thickness of layers of fill to be compacted shall not exceed 8". No FROM D125 FROM D127 w ~ ~
slopes shall be greater than 2:1. The entire sub-grade after compaction shall be smooth 03.75 NA NA NA 699.19 15 116 0.50 0.50 3.72 ~ D 127 NA NA 7
and uniform slo e. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. p 2. A I 10-10-10 commercial fertilizer of the rate of 20 Ib 1000 sf. PP Y. D128 NA NA 707.50 696.36 NA NA 696.16 24 32 0.50 0.50 5.09
6. Cut Material to be excavated is assumed to be earth and other materials that can be 3. Seed m accordance with the following schedule and application rate:
removed by power-shovel, bulldozer, motorized pan, or normal excavating equipment; 696.00 NA NA NA NA NA U~ FES29 NA NA NA NA NA NA
but not requiring the use of explosives or drills. If rock (as defined herein) is DATE TYPE PLANTING RATE
encountered within the limits of excavation, the Contract Sum will be adjusted in 7.51 HW30 NA NA NA 684.00 NA NA NA 42 60 2.80 0.56 1 H
cam Hance with rovisions for "Chan es in the Work" of the "Conditions of the Aug 15 -Nov 1 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf P P 9 H JB31 NA NA 706.00 682.32 684.32 NA 681.82 48 456 1.54 0.55 14.19
Contract". When rock is encountered, Contractor shall notify the Engineer immediately; E-+
and shall not roceed further until instructions are given and measurements made for Nov 1 -Mar 1 * Tall Fescue and 200 Ib/ac or 7 lb/1000 sf p A,bruzzl R e 25 Ib ac or 1 2 Ib 1000 sf FROM HW30 FROM RI32
the ur ose of establishin volume of rock and the value of excavating same. Y / / / P P 9 RI32 NA NA 701.94 NA NA NA 688.00 18 80 4.60 1.00 12.76 ~
Rock is defined hereby as that material which cannot be ripped by acrawler-tractor rated at a minimum of 50,000 lbs. drawbar pull at one mile per hour, pulling asingle- Mar 1 -Apr 15 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf J633 NA NA 704.00 674.80 NA NA 674.60 48 92 1.74 0.55 15.08 I"~ W
tooth ripper. Equipment shall be in good repair, and shall be in proper working w~ HW34 NA NA NA NA NA NA 673.00 NA NA NA NA NA ~
condition. Apr 15 -Jul 30 Hulled Common or Bermuda 30 Ib/ac or 1 Ib/1000 sf ~
Rock is further defined here~oy as boulders larger than i~2 cubic yard in size. NOTE: ALL STORM DRAIN PIPE TO BE RCP UNLESS OTHERWISE NOTED. ~ U
fJa a ment will be made on the basis of unit-price for rock unless m~rimum-sized Jul 15 -Aug 15 Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf W~A
p y ~ Brown Millet or 35 Ib ac or 7 8 Ib 1000 sf e ui ment or better is utilized as required hereinbefore. / / / q p Sor him-Sudan H bads 30 Ib ac or 3 4 Ib 1000 sf TEMP. RISER BASIN DATA w
Rock work is defined hereby as removal of matenal by dnlling, blasting or wedging. 9 Y / / / A SED. SED. SED. ~
Rock shall be stripped for measurement before excavating, and no rock excavated or loosened before measurement will be allowed or paid for as rock. Measurement and * Heavily mulched during January - Marcn period. Coat applied at the rate of 5-7 gal/1000 sf C3 z RISER DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAG STORAGE STORAGE WEIR TOP TOP BOT. BOT. BOT.
a ment, therefore, shall be b number of cubic yards required to bring the excavation or 200-300 gal/ac. BASIN AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGTH BASIN I~ ~
PY Y to the required surface or grade as required by the Contract Documents. The Owner U
ma ad'ust the rades should excessive rock be encountered. 4. Mulch with straw applied at the rate of 15-100 Ib/1000 sf. and anchor with asphalt emulsion Y ~ g tack coat a lied at the rate of 5-7 al 1000 sf or 200-300 al ac. ACRE ACRES CF SF FT FT FT FT FT FT FT FT ELEV. Q W NUMBER ( S) ( ) ( ) ( ) ( ) ( I ( ) ( 1 ( ) ( ) ( ) ( ) ~
PP 9 / 9 / 73 146 10 81 14 672.00 1 5.55 5.55 9990 9042 1.0 154 69 2
2 10.87 10.87 19566 17709 1.0 101 202 15 128 229 97 198 690.00 [~i r--i
EROSION CONTROL SPECIFICATIONS SLOPES GREATER THAN 3:1 TO 2:1 Design Requirements: Freeboard 2.00 Feet ~
F ~ 10 Yr Storm Intensity 6.80 inlhr ~
Re uirements of the Contract Documents apply to all work in this section. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. q 2. A I 10-10-10 commercial fertilizer at the rate of 20 Ib 1D00 sf. PP Y. 0 Riser Height Above Sed. Storage 1.00 Feet
3. Seed In accordance with the following schedule and application rate. W ALL TEMPORARY RISER BASINS TO BE CONSTRUCTED AS PER DETAIL 30.01
GENERAL: Provide the work of this section for erosion and sediment control as indicated and
s ecified as follows: DATE TYPE PLANTING RATE P L~
Construction entrance; Sediment basins; dra'mage structures; inlet protection; PERMANENT POND AS TEMP. RISER BASIN DATA
silt fence; filter cloth and ri ra outfall rotection, and ermanent seedin Mar 1 -Jun 1 Sericea Lespediza (scarified) & 50 Ib/ac or 11 Ib/1000 sf P P P P 9 SED. SED. SED. Mai
Mar -Apr Add Tall Fescue or 150 Ib/ac or 3-1 /2 Ib/1000 sf DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAGE STORAGE STORAGE WEIR TOP TOP BOT. BOT. BOT.
PERM. AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGTH BASIN 0
CONTRACTOR'S RESPONSIBILITY: The Contractor shall furnish the Owner a system of Mar -Jun Add Weeping Lovegrass 5 Ib/ac or 1/8 Ib/1000 sf POND (ACRES) (ACRES) (CF) (SF) (FT) (FT) (FT) (FT) (FT) (FT) (FT) (FT) ELEV.
temporary controls to minimize soil sediment erosion during the construction period caused by 1 3.38 3.38 6084 5507 1.0 58 116 10 66 124 54 112 688.00
storm water runoff. Work shall be erformed as called for on the drawin s and as site Jun -Sep i** German Millet or 40 Ib/ac or 1 Ib/1000 sf w Design Requirements: Freeboard 2.00 Feet
P g Small-Stemmed Sudan Grass 50 Ib ac or 1.2 Ib 1000 sf conditions warrant. / /
10 Yr Starm Intensity 6.80 inlhr
Sep -Mar 1 Sericea Lespediza 70 Ib/ac or 1-3/4 Ib/1000 sf Riser HeightAbove Sed. Storage 1.00 Feet ~~~,+++++IIII1~~~ I,
OWNER'S RESPONSIBILITY: After the acce tance, it is the Owner's res onsibilit to ro erl (unhulled-unscarified) 150 Ib/ac or 3-1/2 Ib/1000 sf P P Y P P Y PERMANENT POND TO BE CONSTRUCTED PER DETAILS & SPECIFICATIONS ON SHEET PD-1 • ' ~ . pl. ;
maintain the work. Tall Fescue Millet or Sudan 20 Ib/ac or 1/2 Ib/1000 sf ;o RIP RAP OUTFACE PROTECTION DATA ~ Q : ~ v>';~
=Q. ~ ~ STRUC. Do Q D50 La W Pipe W@End Dmax Thickness _ ~ : ^ ~
EROSION AND SEDIMENT CONTROL: The Contractor shall provide erosion and sediment Temporary -Reseed September 1 at recommended rates. $ LD. Inches CFS Inches Feet Feet Feet Inches Inches ' ' Z ~ p
m control during the period of construction of this project. The Contractor shall protect and 5 WASHED STONE FES9 30 27 6 16 8 19 9 14 Y •.d ti ; ~ PVc ~ CLASS I RIP RAP
~ maintain the tem orar erosion and sediment control structures which provide temporar 4. Mulch with 3" straw applied at the rate of 50-90 Ib/1000 sf and anchor with asphalt IT 1'THICK x 3' HIGH (MIN) FES23 36 32 7 20 9 23 11 16 ; y 0~,~`
~ p Y y emulsion tack coat a Iled at the rate of 5-7 al '1000 sf or 200-300 0l ac. ~ sediment ollution control, as shown on the drawings. The Contractor shall protect and PP g ~ g / F~DW P ~ FLDW / ~ / 24 12 5 13 6 15 8 11 mnn+++ ~ ~ / FES29
~ maintain the temporary facilities as necessary to trap soil erosion and sediment pollution created - ~ HW34 48 107 10 26 12 30 15 23
~ by storm water runoff. Maintenance of these facilities shall include, but not be limited to, ~ REVISIONS BY ALL RIPRAP OUTFACE PROTECTION AS PER DETAIL 20.55. r. PIPE
o regrading and filling of washed out areas, adding erosion control blankets, adding silt fences ~ and riprap, and reseeding and mulching of the swales during the construction period if deemed
~ necessary by the Owner, Owner's Engineer, or Cabarrus County (Thomas Smith 704-920-2887). GRAVEL i;< RIP RAP FILTER BERM BASIN DATA:
~ ~ - ~ DRAIN. DISTB. MIN. REQ. MIN. REQ.
m 0 GRRFB AREA AREA STORAGE SURF.AREA ~ ~
N / ~ BASIN (ACRES) (ACRES) (CF) (SFi / _
0 EROSION CONTROL SEQUENCE: The following sequence of construction shall be staged as „ „ / I 1 2.26 2.26 4068 3682 ~ I ~ GRAVEL & RIP RAP FILTER BERM BASIN PER DETAIL ONSHEET GR-2
N re uired to rovide acce table erosion and sediment control. METAL T POST WIRE FABRIC 5 WASHED STONE Va~+ q P P # a~ 1111 II ~ FV SEDIMENT STORAGE AREA
N #5 WASHED STONE WW FABRIC
m 1. Contractor shall arrange apre-construction meeting with the Owner, the Owner's ~ Engineer, and a representative from Cabarrus County (Thomas Smith 704-920-2887) z PERSPECTIVE VIEW
N prior to any land disturbing activity. ~ ~5 WASHED STONE
~ N 12" MIPJ. A 2, CLASS I RIP RAP
r 2. Install construction entrance which shall receive a minimum of 6' de th of 2"-3" coarse INEE cENEw~ NOTES: SEDIMENT STORAGE ZONE 1~- - FINISH GRADE
3 p 1, GRAVEL AND RIP RAP FlLTER BERN ~ aggregate In OOSe meaSUrement at the OCatIOn SfIOWn On Sheet GR-1. Any Sediment z_ INVERTS THAT DRAIN 10 ACRES OF RIP RAP FlLTER BERM BASIN SHOULD BE USED TO PROTECT EXISTING PIPE STORMWATER STORAGE ZONE Date: ~ 2~09~03 DRAIN 10 ACRES OR LESS.
~ aCCUI'T1UatIOn On adfacent pUbIC rOadS OS a reSUt Of this prOfeCt and trafflC ~ 2. DIMENSIONS SHOWN ARE THE MIND iHOWN ARE THE MINIMUM ACCEPTED UNLESS OTHERWISE NOTED. FLDW ~ I Scale: ~n-~~~' Hor.
Q from this project shall be immediately cleaned off by the Contractor. GRADE z in ih N A
Q (Minimum Stabilized Construction Entrance Length = 100' as per detail 30.11.) C7 PIP A PIPE Drawn: JMY
~ 3. Install temporary silt fence where indicated on sheet GR-1. Protect all existing INLET STRUCTURE POST MAX. SEDIMENT DEPTH Checked: ELM
w -
o storm drain structures with wire tabr c net protection per detail on this sheet. n NLAN VIEW kt;itnn vu rvini) SECTION Job: 03-07-06
SE C, TI ON H
4. Install temporary riser basins. ° WIRE FABRIC INLET PROTECTION GRAVEL & RIP RAP FILTER BERM BASIN Sheet
M N NO SCALE NO SCALE (DETAIL 30.12) GR-2
U N
0
n ~ Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN IT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: of 3 Sheets
J
U

Weir kogth aaddepth-Keep the spigway weir at last4 ft long and sized to ' Dewatt:ring a~
Emergency spillway pass rho yeah dischazge of the l0•yr storm (Figure 6.60x). A maximwa flow Pi a Outlet to FI - Pipe Outlet to Well~tefi or 1 ft, a miainwm 6eebcerd of O.S R and maximan side slopes or 2:1 P at Area reel ~ No Well~efined Channel Channel t to Well~iefined Concrete block _ ~ hannel - ~f-
Riser pipe fa principal arc recoarmended. weir ltnglh may be aelascd from Table 6.60a strewn ror Escavatedarea(asrequired} ~ a ~ t`
spillway ~ most site Iocatioas in Nosh Carolina. freeboard - 1' min T- Side slope 2:1 . - I ~ '
Trashrack ado vl'='?'~ A Table 6.fi0a Welr ten th' A _ _ A ~ =lull- i1 Atcumu ated ~ Q. ~ ~D
Desl n of Spltlways Dnlna9e a • T t, t 9 (acne) hq do A - - - -I. 1 sediment 4 ~0
- = ~I EmbankmeMstabiNzed f ~.o ,f!__,_ I'~ . weE Tales t ~ I' ~ ~ cC d'
Drains a holes A « ~ - with vegetation z s.o , g ~k i f a ao with gravel 1 1 II - I I If 4 toA Excavated depth, r for ~Ilil~ln,. Gravel-supportedbY W ~ O ~W _ min 1 • -max 2' ~I"` dewalerfng ~ -ill ~ hardware cbth to a11ow v N 0
s 2.5:1 sbpe ma 5 tz.o Plan ~ t>ebw lop of inlet iii I : I - drainage and restrict ~ ~ ~ ^.r t _ sedimontmovement. ~ "U ~
t0imenspns shown are minimum Pfan I ~
_ t:t Anti•seep ~ Anti- It ~Ittf collar f _ .J U ~ 000
Selected fill flotation placed in layers Principal Stabilized I 2:1 slo ravel filter U ~ Pe.9 ~ 2
block and compacted spillway Cut-oft trench, outlet 5 n.~ i? 11 ~'a III~~ ~ ~ ~ 't3 ai ~ y}
bane! 2 deep ~ min ~ r - - ~ ~i+I ~
t.5 n $eC110f1 ~ 'Etter 1800 cu n1 acre ~ blanket Flow ~j Flow ~ ~ o _ Temprxarysedlment Wire screen Dewatering ~~yi/
2, , ?•7 s n max ~ d pool ~ ; ~ ~.~~•~i,,1, ~~d. 3 0 ~
Notes UI I i Section AA - ~U
1. La is the length of the riprap III 1 i~ 0 Filter min a~ ~
Cross section Filter fabric apron. blanket t t8' ji ~ ~ 0. 2' max _ r•. ~ .
2. d • 1.5 times the maximum stone diameter but not less
z,• overau s• than 6°. - K II ~ ~i ~ ~ - mi ~ • t~ Drop inlet Jr~i \ Flow .y...
min r l« 3. In await-defined channel ex- with grate / Sediment Flow /
°p ~ ~ tend the apron up the channel a n inn „ ~~+y+l+ ~ banks to an elevation of 6" Rpura e.s2a frock and graYel drop PmtacBOn.
Ill- la I abovethemaximUmtailwater i1.5 n X2:1 stela Emergency Temporary sediment pool Wire mesh
s e I ~ ~ hY-pass depth a to tfte top of the bank, max ea F;u~, g' oelow whichever is Tess. (opGGnaJ) N U
hbdc side slope t sellbd by - max Hatwat olaam 4, A filter blanket or filter fabric t' min 2:t sbpe 3:t slope I~ ~
~°aid should be installed between 3n the riprap and sog foundation. 2' max F t, Q N ~ ?,r ~
min -II 11 _ eaK ~ ~ I
Stone SBCtIOn Fine gravel Ih.. ~,v•, face (t' min 111= 3' ail I : d ~
Construction 1. Site kr, band stri 'I from areas undo the ertf N°vn6.e0eTemporary tap. COnstrueti0n 1. EnslYe arr ale subgredo ror tee Cher and riprap follows the lines t~l-C a~ , P ~ S ecification ~ ~~wa ~r dot plan, tom tan ru a:~a in u~t ttuckness I' It'd''" ~ ~ Q llowsthe lines } stone d,. ~ o
S ecif ications °"'~a'~"11D remove row. r'd cellar abjersiOrrsbk maluial. p s P& r ~ wt,gadc b ~ in arc sabgraac to ~r ~ tteas in G52b Gravel tMP Inlot P,omclim {gravel dodaf• DeSlgn Critefia Limit dte drainage uu to l acre. Kap Use minimum degh u l Eland Use max• ~ dle subgrade on ~
P To fsciWare sedimera ckalvxa and restoration, clear the pool area of al! brush, Construction L Clear, grub, and slap the area under the enrbadcment of all regetation and density of the surtourding undiwlrbed material. I.ovr areas in die subgrade on trees, and other objcetiooable materials. Stockpile all tapaoil a wit cantaieiag root oral Ranore alt surface sal conuining high amounts of aganic arguer andsturbed soil may also be filled by iatxasing the riprap Ihidolest, ~ ty; ilnom depth or 2 ft as nteutared from the crest or the mtet structure,
ematterfauseoaareowershellofJatmbankmaulofacUitueve SpeCl}ICatIOnS ~ eordsposeditpropcTlrilLtdtdtobjatioaabkmaterielwdre staclcpd L The riprap and gravel fiber must coatomt b the limits I ~ I gradiaS liTnils Maintain side sbpES around Use exavation no stayer thin 2:1. r--1
uveestablisMtenLPlaoeumpororysedinrntmwd measturabc:owUte basin ~P~ ~ shown m Iht: plans. ~8 u needed. 2. Eliswe that fi0 material fa the embrdcment is bee err roots, woody ta- F-I L z N
~ 3. Fdta clan, when gn tequireraeaNa rid ht properly 2. Cut-0ff aence--Eucavau a cut4lf trench along the centerline of dto wrlh tioa, organic matoer, gad attrr objeexibaabk masaial.Play the [il! is lifts na used, roust altei deli the minimum voiltra of unvated eta arotmd the drop inlet at ap• ~ Construction t. [ay oa bbct on each side or the strucwe on its side m Ule harem row to ~ ~ ~ aanlaaodheproperly ,stow droi .Th~ro,~t~ttzlt~r~b~e,~aYateaatt~tz;rcb~braw proximatdy3syd'~disarb~d. p., d-
fell embaltkmutL Cul the wench b stable sal arterial, but in ro rase make a b exceed 9 irtclles and machine cornpaa it Ova fat the ranbankmcnt 6 ladles p10°~0d f r0'° ~t~n8 a ~8 +n~~ any dwage by ~Repairanydanlageby $PBCIfICatIOnS poa1 ' sttheed Of I--' „ Ilse crest of the storm drain Place dlelaaom raw of bkrks again ge
kssNan2ftdtxp.Thecta~alftrerchmustcxtcadwbbahabnulwasbatkast wallow fasetaemera. ~ ~~dPaP~PfaciaganakrpixeofG>uretahowrUadamaged Al! omaawtg joint should overbyt a mirrilnua Of I f1 Raise a i9 Ule elevadoo of Ile riser rnest. Make Uas mioinalm bolbm width wide enough wag ebth over Ua damaged Use sbrm drain f«lalaal suppartand to avdd wasboua wbutove:tlow occws. Skape dtehatinta C4sitetOrtditioas. wilt rbebngestdrmensronorientcdlowed N of I tt, if site daotage i9 !<oeedcd, give (sterol support a subsequent rows by placing 2 x 4 wood studs Use bngest ellbw area to provide maximum trap elGciatcy. O L . - N
b permit operrion of excavriOa gad carapaction oquipmrntbw is not'taE less Construct the outlet 5ation in the anbankaralt. Pttrtea the tonnertioa be- txlealdvt, teplatt Use tntire fillercfoth, - ~
dlaa 2 fL Make side sklpea of die treaclt rr sleeper than I:1. Compaction te• trvantheriprapxadtteaoilfranPrpNBtY ~g filxrfabricrxtkeywaycaoR quirr+nesMa are the Same as Ulose fa the emlaellnrterlL Keep Use trdreh dry trench bawaen the rgrap sttttcatre gad rile sal. 4• R'PaP "mY ~P~ by equipalett, but lake cane toavaid damaging the fd• InsuO provisions ra draining tlx temporary pool to improYe trapping c(ficirn• O O Q avaiddamagingtheCd• 2. CarefWlyCuhardwaredodt«mm{x+rahlewuemeshwit6ll2-rrchopar- ofarsmallstamtsandWsvoidproblemsfransund'atgwataaftrrfwvyruru. l,~• ~
during brekfilling and compoctioo operuioru. Place Use filtrr fable betweal the ripragl and soil Extend Use rabic across ter. ings overa(1 blockopenings b hold gavel b plan. p ~
the spillway fouodalion and sidd b the tap of Ule dam; a 5. The minimum thitkaesa Df lit ' should be I S limes the mazimwn stone J. Embaokmeot-Take fi$ malaial fiom du approved aaeat tbowa on dre ~ r'~°p I 1. dtearaofaJldrbrisdntmi hinderuavationanddisposalolspnL W ~ ~ Construct an ae~ ~ ~ f~ ~ ~ susUtemaximamstoa 3. Useckangntvet,3/41o1R•irrltiedarneter,plaoed2ntct~.tbebwdKtop Q
phna, Tt should be dean mural sail, free of roots, woody regetatiat, rocks, ezcarate a keywry trench along the ceracdirc of the spillway foutldatiar dumecet. ateatng up dIe sides b Ure height err Ile dam. Tlw tratch :hoard be at Gr~eblockG.axlstope«tlauvandstT,oothittoanEYatgraaeDOTMST Speatications ~ ~ C
and othu objeairnabk Drtuial. Sracify areas oe whist fill b to be placed kart 2 n dap and 2 n widt wilt l:l side sklpea. 6. Ripap may be field stone a rough rpprry abee. It shtuid be hard, an before piecbg fell. The fill anlaial trawl caotaia staficient ttbisDte so It an Solar. washed oboe is reamrneoded. I. Grade the approach to Use inlet ani[amtY, W ~y , _ F+-I Ibautd be hard, angalar, a trout stone sad are dte s toward the inlet boas .et. ~ ~
be rotrntd by fiard into tball witdattcrunDling. Rwata coo be sgaattd out d. Clearthepondatealxbw tttaelevasioaorlheawtoftftefpinway to faciTuam h'BMY+~t~-resisraatand well gsaded, y grata area, ~ lopo ao srapa x Protect weep by gn a than 3:l.Isave a nuaimwn I-ft widE level stone uea between Use strucltrEaod
ottlre ban, it n too ws;lfa peopertanpacliot. Place fell mataitl is 6 b &irch sediment cleaaol°. T, Canshtra the on zero apron grade wide ro overratl u Ile tad Malmo the ooutiuuouslaTeaovaUleeatirokalatbarllrofitlaratrddrencomoectiLCoar of theripapatthedpwnsptaraudkvdwidithetoop' arcaasl' ~ X the end TafakE the tap arotatd ~ ~ b prevent gravel from uttering 611d. On the slope toward the Whm dtc contntwung droimge era h><s Iteeu punwmnUy subitirtd seal into, ase stone 3 inchts is diameter «Iarger.On the sbpe away Dora dw inlet weep holes, Cdt thebasin wilt stable soil fo final grading Eltva6ons, txxnpatt @
pxsioo cry beabtaircdby raairlg Iheweatnrctioe hauling egaipmeotover the s. All cut and fitl abpw :boatel bt 2:1 a flatter, telex iL ~ ~ Y ~'dag lrea «~ighpy tee 1/2.3r4•irrL growl tIVC1Xyt' MST washed stone) a a tssulimum dtictrtesa properly, and subt7im
fell w Ctrlelseerairesltcfaceaf ash kyes u ptvttisedby><least sae wheels brad pack of the hurry equipmaat,or a compacts r.y be asod, Coaamrct dre c Easurc art the stone (damage) section drho embankment has a minimum of l @.
R Easuro that the apron is properly aligned with the ctaivin stream and embenkntrlt to m elevaliot 10% highu than We desgn height b allow fa sa- bosom width of 3 ft and nraaimuro sidi; skryes d l:l thu exktld b ale babm preferably spaight aaougbax its kngdL R s crave is heeded b fu site troodi- ettx'tiv+ngslreamand MdlntenanCB [nspeckdeatt,andpropafYmainmintheexcavatedlusitsafrsrevuystormsMtD] tltededtorttsitecendi• Maintenance [t?spoctthebmriaaftaeadtraiaandmakerepaitaa:ceded. theoonat'bttaagdraiaagwreabasbeenpennanenrlysrabtti'ud.Toptovidcsatia-
d ~ s1Y tt~uan. hots, place it is dlt upptr saxino of the aproD, ' C ' remove sedimutt when the voltuoe of Utc basin tuts
d. Cnrrdtlil spilhrays--Socumty aJtadt lk riser b die banel,a barrel auh b 7. Contrutt the minimum finished stone spillway baron width, as sttosm on 9. RGIIOVe S<drlllenl a4 b Y bt94 ~ K~, ~ V 111E a areas weh YEgetation ~ ~ 10C"~' volume r« sub beta redtred by ataAatL spread all graYaled oulezu! a enly tsrcr sot
make a watertight structual atroaua Settee sn aaatatiaa basvaa barrel the plans, wah 2:1 :tell slopes extending m die top of the aver filled uebank• immediately alLx cnastragioo, stabilize all diaTUrbed areas with vegeratioa sepionab)rappsavedwaaatiglltaasembtio,Plaoedsebamtlud risaaaa faro. matt Kcep Ure thidutw of Use sides of Ure spiaway outlet stntctwe ua sniR- (R'xtitu6.lQTrarporary5adnd.aad 6.I l,PeresoenuSudar~. rounding land area a sloekplle and subifira it appropriately. rarsudur~, ~
sobmh tottadation d imperious sail Do gat roe pervious raterid such as mum of 21 irrclla. Tkwtit moat k kvelaed mnstrocled tograde to assure sand, gravel, a erushed atoaa as backfJl amend die pipe a ami•aoep collars. desip opacity. Maintenance Ins Whets UtECrnroibWingdroinageanca hasbeat edegttatdy stabilized, relnovea8 maierials artd any unstable sail, and either salvage «dispoae or it pmpvty
Place the fig arterial around du: pips: spillway iu 4•atch layers and oampxt i! P~ ripaP outlet spnctruta dta havy airy b see Hnay eroaial arollrrd a below UIe riprap tag Iakal plxe a i! atones love beeadislodged,immediately f nay anoint crowd « Ikiag Iho divsrrbed area to propu gradE, that stoooth and caatpaa iL Ap• 1islGdged, lmtnedrately ProP~Y teab0iae all brae mess around ibe itslet,
wader rid around ate pipe tD a< Vwst die same density is the embank• iMaterial nlsed in Ili atria srdioo should be awolf-graded tstizuae of :Tone atalte atl :leaded rtlenL Caro artist bt taken col to rtlu the pipe from Ili caetaet witY it with a dw doe of 4 inches (class B aosioe rbotld stone it teearatxndedj and r'epaus b pravplt frUur damage.
farodatioo when conytcting reeler rile pipe ltotlrL s maxinrm state aloe of K inches. The atone may ba rnarfiine plaixd and Ure
. amauar:t~r~awakedtntotlrtYaiaaortn°>argattaarts.rnta~ttaeaaldta >~ttamwm~t~pdt~2ftarlrad~p.aa+ka~aa~.~p~ap~ap ~ad.aogula<.a,~bgaYw~r-trL RIP RAP OUTFACE PROTECTION - ~ ~ a - EXCAVATED DROP INLET PROTECTION BLOCK AND GRAVEL INLET PROTECTION sro. No. REV.
befaecmidn(YwUhaatr<IntCUn00~ttipmtatA~telafr~aDlyE°! STD STD. N0. REV. STD. N0. • REV. U
at~aatn~savs~tarymtaaabpr~tntaot~ia..>:.D~aaaa~oatamep~t 9.Enwrelfutthcstonespigwayoutktxctiatedowa~rcam{1astUtebe NO SCALE ~ 20 ardrtaertleembtall,la.t { ooodlrit be nmlled by atuog t ovoid tltoaejlt of drt ernbankmea gill stable COndiUOOS are reached and crater vefQcity is ac- 30 08 o sCAI.~ 30.04 20.55 (NO sCA~) N ~ A
itaompkle. _ apwbkfaUlereaivingstream.KeepdrecdgaofUlestoneoutlasttoonfhxh
molds Uusurrounding graurdanddupe theuaNabconfate lkoutft'osv weam s. Emergerlcy spillway--lodall ma spigway in nadLSaabed soil, (Refertacu: t~adcrr?oaaroa). A
rte achinvestleniof plaraled elevatitraa, g~de, design width, and errarloe and vAR1ABLE AS DIRECTED aY THE ENQNEER exit chralel abpu re triacal b Ur auocea[sd opaatioo Of iht emergexy l0. Airctt emagerleX bypass b namtti, sable teas. I.opte bypass oalkLa so (a• uAx.) ER z STEEL POST STEEL POST A
spi$way. That flow will not damage dnt embtldcmeo4 1.5 ~ Z min 1--r1
L. lalpa- water ilYO die base is t roamer b prover erosion, Use 11. Srtiliu Ule embtotnncnt and all disturbed arras above dr 9odiment pod rILTER fNS1iIC = FLIER TABRIC g z r min W
diwrsiorntwi0'autktpro?opioa oodivenxdiroaltdadu watabdtaupperend tulddosrttsuum C~Dm thetup isattedialely d'tertxitsanctioe (Rr~aeacu: Sah ;w ~ ~ ~ ~ ~
err Ule pod srea b improve basin cap ed'ciatcy (Rcfueaces: Raao~Caurd /are StabilisatbA). wOYEN FILTER FABRIC Afeomta and r7wfd ProJtufat). C W ~ ~ 4 a f~
b ~ to ,~y~ r f~~ Filter O tabrlC
7. Etasion Coap01-Canstaa the stnscuue w that lbt disDAbed area ismini- l~• Shov+ Uw diStanCt (mnf the top or iht sprTlwty q she sodimta t:katwut raved. oiwst srxfaa water sx front bate rear. Complae ate ealbantmea Itvc1(oa-dalr~t ataign daytn) at a~ purr, any mark it m art rtda. - - - - °r - V1
befae tbt era ~ cleared. srbdi=e die eTOtrgeocy spitlwty anbatlttnent and o ~ _ ? 1 A U~ w
ouaherdiwabedtreastbovtUlcantdtheprintipatspillwtylromediateq Maintenance laattat lempaary aediraaa papa trig uc1 period of >;grW'axlnt raelfau. ~ _ olio wroaucdao (Refat.eu: Sarfoce Stabiliwrioa~. Remove sediment andrralore else pap m its original dirtwtsiats who the sedi- b b l I I - I r I ANCHOR SKIRT t; WMYIM ANCHOR 51(IRT 6' llaMAlUr1
meet has accrolnlred b alahaU Ilne desigtl dtpal d are pap. Plato tht aedi• n iv _ m Class A or B W N uEU ~ eDaYNC sK1ar• C od ~ Erasion Control
& Safay-Sal6pcnt basiro may atpaUCtildren andcaa ~e dangaosu. Avoid nltllt Ifrt is RIIgYtd r Iht dtSlgtlabd d1~Sal aRa and ICpIaI'~E 1t1C slap side sbpes, and lento and alrk basiaa with warring dgas if ttespassiag corarnieated pact Gf dre gavel facing. s WASHED staNE wY eE usEO Stone 'mil' r OYTJI TURHWlWF. FILTER aARRlERS SWaL 9E rrSPFCTED BY TtE F1NAN1yl~tLY i _ r M'S
ialikety.F0a0waHalattandbplrtQairemlata. (fit $~IiDTES I. FlUEIt FABinC FENCE SWLL °E A rNaIUY Or 37 W MDiH Ni0 Check the su,ictum (err damage Ftom troSiOO err piping, Piaiodically dledt alt SFNLL }NYE A txrNUY a 8 UNC N1R6 nNTH S7 STAY SPACING. RESPONSIBLE PARn' OR HIS ACENT IaatEDNTELY AFTER rAGH Filter ? y 24"max RArl6ALL ANO Ai LFaSr ONLY g1RING PROLONGED RAINFALL. tabflC atcentar
depth of ale spillway b ttlsae it n a mi,timum of !S II 1,eWw Ule bw point of 2. FA7VEN FIUER FABInC aE USED wtiERE SILT FENCE a TO REYdN ANY REPAatS NEFAED SHALL 9E 140E a1NEGYVTELY.
Maintenance ctakatavrtatnaain:arl~pdiaaaofdg~rltaatnalaff.atmarta~inlew~ld ~L]paoadWrJyftYaayatpkmprtOfthtWDb&dDrltatbafigtl. FDR A PEPoOD OF YORE 1FNN ~0 OAYS. rcsbredlcbasemirorigiaaldialatdouswlrulaedioreatacamulatasboaa ly atovt dtsign grade. Aoy riprtp daplsKed prop tpt spi9sray mrat be 3. STEEL POSTS St W.E. BE 5'-0' ns NExarT ANO sE aF Tlt< y. SHOULD 1HE FABRIC OEC01tPOSE OR aEC01tE MIffFECTNE PRIOR TO TNC END aF T1~ EXPECTED USABIE LIFE AND ITIE BARIGER 510.1 R rIEIISSARY, THE
btualedlsiggndeplln. nplrtcedimaltdtakly. SELF-iASTENER ANGLE STEEL 11PE 1, wp00 POST5 SWILL ElE a TO 7 FEET IN HEtfalr ANO 3 TO ~ cAtaRtc sNAU BE tTEP1ACED PROrAPnr. Section A•A 1 SEDaAENT IIEPOSITS SHOULD BE RE40VED AFTER EACH STORY EVENT OR SILT
Check die eabatltmdll, sprllwayt, std otdkt fa a+OdOr1 damage. aid ttLSpea After as sedaeent•produciag areas bare been 1~~Y rdnove WOODEN POStYN1E THRNOI ~ SS~ f Wr f 9 MRE FSGPLE501 TD/Y talc. FENCE SHOULD BE REPIAtF.O~ 1FIEY MUST DE REMOVED WHEN GEI'OSRS RFACH APPRnX HNF latE HDGHi tlF 1F1f flARPoER, M!Y SE011ENT GEPOSIrS REIWMNC N
Use embatlcmeat fa piping and aetaemenL Make all rluesery repair im- a,e atrltctuse and au ullsubk redimem. Sawoth IhE area b blend wills Use ad• ttlediasely. Remove all aadt gad olio debris 5oa ax risertad pad trees ~ asters txd srbitize properly Gb/~ ~a Sra6iffrmioa). 5. WasH~ SNStult ~Cus~ B~E"~Ex 5~ Po~NO~ ~'T FENCE PtACE Af1ER THE SILT FENCE IS RE1rOVE6 SNNl BE DRESSED TO COrIFORY Slorwdwd~-SlaritnJdbapOusdawrYMdtanrpltunkttallaapNalwhOmwErgNauldMdan~ To Tta: EwsTNC tarADE. F'REPAgfO ANO sEEOED.
J _ _ 6. TUNN SI,T FENCE UP AOPE AT ENDS.
7. 1Mtpi FABRIC IS USED YAnI wiiE tIE3T1 d' CENTERED POSTS NAY 9E USE. usE. L • Tha dtstartce stack that pt>iMa
TEMPORARY RISER BASIN TEMPORARY FILTER BASIN STD. N0. REV. STD. N0. REV. TEMPORARY SILT FENCE a and a are ~ elevation STD. N0. REV.
NO SCALE 3o•a~ (NO SCALE) 34A2 (NO SCALE) 30.06 ~ A a ```1t,,,u1111nu,,rr,,,
t ) ,y _ ,
- v " P - n- ~ 0:0~
~ :T`n a z: J 5: _
Canpaded 2, rd • ,
.min a.~ r mfr sop `I I' r ,d o ~ Construction t. Place atana to as tiat„na sllorre in the pea, ao a Cdter Fabric ~ ~ ~
! Fes' ~arpgp 8• freeboard rowdacoa ~ ttt,,, ~~~r, ,DO, Speafications rrlrllttttl
4' THICK 3000 sl CONCRETE LiD w TxT, 10-10 WWM to"min 4/ afiA _ p l =~Ai:y~n _ QJ ~hq 2 Kay the ante stone seEtion x lost 9 ieettes Gaow tsulral gtolud leYa
_ - u - N III- 1111 tl - - -1 m lit ~i I~ iHi I - IlF" - =it whoa the dam abuu the dnarcJ boats.
c 3 0 x 6 OPENINGS TYP. ALL 4 SIDES 8 tYP+c a flatter 0 REVISIONS BY ~ d ~ a £ztead stun at Itmt 1 S ft beyad rte ditch banks (Figare 6.g36} ro keEp
~ - , ~ ----xs~--x x - ~ ~ ovrrtbw water fiom undrrarling the dam u it ratmeta Ure ohanad. .
Q ~ FINISH GRADE 8"min J~ dwatosnuEdtatrheaEYatianattbe ardtekswes , 4. Suapacmgbaaoea aP
N ~ 3'- I 2.3" dtm u dte same as U?e one elevation olUte ttppadam,
1~ coarseaggregate ~ i RotnailtedwtneidownsaeamfianrtelowEatcheckdmrr,caarderiagthat
a ~~a ~ 8" SOLID MASONARY COnStNCGOn t. Remove and properly dispose ortY ttta, bnuh, atom rid osier ob' . warn wiU lbw ovCr old around the dam (Pravda 5,{l, OYIlet Stebilireriolt
Ptl Ja COn$tNCtIOn t. Remove ltd o r? tionabfe arraiaL OroP~Y ~ ~ beet, brush, suaaps, a other objec- o Specifications Specifications 'i°n~1e a>~l. Fd ~ u01Pat? aq dgcbea, swap; a gdlies Uri win be StrYrnve}. «otha objec-
cv lies That wiU be i. Make swE Ihat Ule chaaad reach abovE Ike moetsspskeam don is stable.
t e 2. EnareUrttlleminimrt crosacd to tteDatt grand level aabova trod grog seuton areas all design requba• N e meow. ConstrlieGon t. afar ~ Eeeta and Exit era of aD Yeglsalien, raoa, and other o~• ~ ~ T, Finare Utr ehatmd appuraenaaoea, such u alYert erttroaus bebw tdroCt
VARIES 2. Ilal betas plaoemeat err fitl, ate base of the ridgy should ba disked by °n J.Ensaethatale oftheddccitrlalolverattn ~0~' 3 bP y pact Ibarn Uledesign eteva- d ba tltsked by $ 'fications ticrpDle erataial std properly grado il, cams, an: trot sobjal to aamagr: a t~GGk~E win aisp~aa a,o~a.
~ lieu plus Ule specified serllemenL
r~ PARGE ALL INSIDE WALLS J. •~.rmdslabiliutntaYaaiDDbune,gttae,rldt,Daasation. ~ ~ a a f~ol~iataYfrirtatroomaramadiwtsiorum tDatwn~re ""g1tl°d~"~d"~"~" dcrosssa • zPracEtttEg<aYElwdtalperir;~graaEaadai,nrt>siot~showaaltTh<plar~,~ta ,,,G,,, ~i~ Maintenance >aspatrneckaamaa,datanMla~rdamagcafi«EadrnaarrEYEa>.
~ YNTii t: 3 CEMENT/SANG racrrwL l ~1°gt0d Campea Thu rid m "a~ i 2" 3/8 MIN. TWCKNESS >m P~ ~ teulcraont told b protide wbiliry amide mobility ' 3. Provide dnirege a wry vraly too sediment trap a other sttitabb tstltleL Amicipate subntergeaco tad depoaitioR above the cltak don and emooofrom
typ. S. veattate We ridge imrnedirely after eoneo,raien• lades: i win temaal in 4ighltowsarowdthecdgesofUsadam.caror;tagaamage:immEdiatElr.lrsig- Date: 12 09 03 • airy erosion Ecaus betweeat dams, ~ a pernective riprop liar a that ~ ~ a u: geaealile falxia beta>sve they ~'e naeitity err !nE Walldauan
a Plato ksa a,a» ~o working gay,, s. vegerstively stabilizes the diYersion after its itlslanatia. kswiala tubjeu to seepage a•high warn tat>fE. ponion of UtE dtsualcl t;Praaice 63 t.Riprap-Goat adPaw.d t~raaaeh}. 1 "=100[ Hor.
~ ~'x --~-x=-x'-•~--is--o- x x °-x t3" Rcnow sodiraeolamatttdated txttind the darns as oo preYeat damage Sc a I e: N A
~ Maintenance m z Maintenance ulaptate,1,parry~aatawtefrxaaarrrerayraiafellfmrn~au- ~tP~aa~Ywaioaaarl~a.~yainratfalaain dltona~rrtaan B opeta- ~ ly remove sediment from the flow arcs sad rq,ait ate diversion ridge.Careful- tian• ~~Y remove any obstrilttioot rraa Ur tbw area and reptir Use ' n i kav- low the chxwtel b drain h the stale chedr dam, / thtrclioaopera- Maintenance MaiNaia ~ grovel pea is acoedition to proveM man a sedtmc t ruin Yegelatian,at throat,
ly check antkti and make timtly npairs as nadtd What ate area protahed is dtrenioa Cbedc outlets aM mate mndy sepaky as raded, Mtintaio tEo t and rEpair Ilse ing Use ooTatr4clion silo. 7bu may require periodic topdrmtiag with 2•irlch and prevent tazge lbws from wryistg stxGmeat ova the dam. Add slaltes ro Drawn: ,f MY d, Maimaio LEE stone. Aftaadt roes[alt. iaspoctaoystrocttue tuodb Trap sedinteatatdclan damsasoeededtoeuitrain design heighttndt:roas stxtiaL
nn.l.v.rx n.nr n..n •n •n ue.~, ,w...•..,...II.,a.1.:1:,.A........,_a..~a,.. ..a .t._..r._.._r u~a YCACIal100 YIaYi[oroua.rra6hv Male~.,r.n .1,.~.. _,......,..."e... r.~w,ti.r.ty nn nhir~ninnaAle msrrials sailkd. Checked: DLM
w `r 0 WIr. WIC I C DAJC W1 OAD~ I V- I V VW "M p.,..• ..».r,r.r..r..w . -15.. r - --..c. Y UR+.u - - .--v r..w ...wr. amu al ground lcvcl and Vp vpdatdy stabWm iL wwbcd, or prod oum public toWwayc
0 Job: 03-07-06
0 M O
Cl) YARD AREA, DROP INLET STD. NO. REV. TEMPORARY DIVERSION SWALE Sib. NO. TOP OF SLOPE BERM s STA. NO. REV. STABALIZED CONSTRUCTION ENTRANCE STD. N0 REV. TEMPORARY ROCK CHECK DAM STD. NO. REV. Sheet . 120.60
, REY. it
2C NO SCALE) 20.57 (NQ SCALE) 30.05 (NO SCALE 0 (Nn SCALE) 30.11* (NO SCALE) _Lj GR-3 20.50
a.
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIC NT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: of 3 sheets
U

CONSTRUCTION SPECIFICATIONS
~ TRASH RACK 1. Site preparations -Clear, grub and strip topsoil from areas under the ~
~ ~ ~4 REBAR - embankment to remove trees, vegetation, roots and other objectionable > material. To facilitate sediment cleanout and restoration, clear the pool area of oG
TDP OF RISER all brush, trees, and other objectionable materials. Stockpile all topsoil or soil ~ • ~ ~
I containing organic matter for use on the outer shell of the embankment to ~ ~
facilitate vegetative establishment. ~ ' • ~ 0.^~C,
I 2. Cut-off trench - Excavate o cut-off trench along the centerline of the earth fill a" TRASH RACK N ~
I PERMANENT PRE-CAST CONCRETE DROP BOX TOP VIEW - TOP VIEW ~ f ~4 REBAR embankment. Cut the trench to stable soil material, but in no case make it less , W ~ ~ TRASH RacK than 2 ft. deep. The cut-off trench must extend into both abutments to at least l/I c ~
TO BE ANCHORED IN CONCRETE TO PREVENT TRASH RACI FLOATATION. SEE CHART FOR SIZES. the elevation of the riser crest. Make the minimum bottom width wide enough `n ^ ~ Q~ N 0
TOP OF Rl TOP OF RISER 'H' PRE-CAST CONCRETE 80x t0 permit operation Of excavation and CampaCtian equipment but in n0 Ca Se IeSS ~ X To eE PLACED AFTER coNSTRUCTION. than 2 ft. Make side slopes of the trench na steeper than 1:1. Compaction "(jam
MAXIMUM SEDIMENT STORAGE LEVEL ~ ~ DRAW DOWN ORIFICE TO BE ANCHOR IN CONC. TO PREVENT ~ F., TO BE FLOATATION. requirements are the same as those for the embankment. Keep the trench dry a„~
6 BELOW DRAW DOWN ORIFICE INTAK g5 WASHED STONE FILTER COVER PLACED IN RISER AT A 45' A as durin backfillin and cam action o erations. ~ ~ 00 _ POOL 9 9 P P V y 000
~5 WASHED STONE FLTER COVER ~ ~ OVER DRAIN PIPE, 12' MIN. THICKNESS AELEV~ TOOINTAO~MALBE OW OVER DRAIN TILE, 18° MIN. THICKNESS ( NORMAL POOL ELEVATION. BELOW vATION. 3. Embankment -All fill material should be clean mineral soil, free of roots, woody U ~ t
20' I PERMANENT PRE-CAST CONCRETE DROP BOx i- TO BE ANCHORED IN CONCRETE TO PREVENT vegetation, rocks, and other objectionable material. Scarify areas on which fill ~ '0 ~
00000000000000000 0000 ooi I~ z o0 FLOATATION. SEE CHART FOR SIZES. IS t0 be planed before pOCing fill. The fill material mUSt Cantaln SDfflClent ' ~ 0.^ ~p
i ~ I ~ o 0 0 0 ' 2 12" I I moisture so it can be formed by hand into a boll without crumbling. If water Y v I I can be squeezed out of the ball, it is too wet for proper compaction. Place fill ~ ~ O
0 0000000000000000000000 0 I ~ BARRED I l 0 0 0 0 I I BorTOM DRAIN vALVL STEM material in 6 to 8-inch continuous layers over the entire length of the fill area 3 O ~ I suPPORT BRACKETS As REa'D. and then compact it. Compaction may be obtained by routing the construction ~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ---J 000 000 Q ~ I I hauling equipment over the fill so that the entire surface of each layer is 1~1 p ~ ~
I = I traversed by at least one wheel or tread track of the heavy equipment, or a ~ U ~
I U ~ ~ 2D LF "K" DIA. PERFORATED DRAIN PIPE w W I I compactor may be used. Construct the embankment to an elevation 107 4
~ ~ GROUT BOTTOM DRAIN ~ 2AIN v' I ~ higher than the design height to allow for settling. Subgrade and fill to be verified E A I I and tested by Geotechnical Engineer. ~
20 LF "K" DIA. PERFORATED DRAIN PIPE r- 36° MIN. AS REq~D TO PROVIDE A CONCRETE ANTI-FLOTATION BLOCK WATER TGHT CONNEC110N. ~oN. ~ BARREL
SEE CHART FOR SIZING & VOLUME. 1 I I~ 4. Conduit spillways -All conduit materials shall be as called for on the plans I~ (Schedule 40 PVC may be used for sizes < 12" diameter).
SECT/0/V A-A CONSTRUC110N NOTES: AiE i - - - J Securely attach the riser to the barrel or barrel stub to make a
CONTRACTOR TO INSTALL PERMANENT BARREL, DROP BOX YMTH OVER-EXCAVATE ANTI-FLOTA110N, DRAW DOWN ORIFICE, TRASH RACK AND El1ERG0~ICY r DEEP FoR ~R ~ ; I watertight structural connection. Secure all connections between barrel 3E INSERT PERMANENT RcP BARREL sections by approved watertight assemblies. Place the barrel and riser on a • N
SPILLWAY AS PART OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. slLr sroRACE f. : ~ iNro PRE-cnsT coNCRETE RISER. firm, smooth foundation of impervious soil. Do not use pervious material such V
INSTALL PERFORATED DRAIN PIPE AND STONE FlL1ER. ONCE ALL 'K~ PVC BOTTOM DRAIN W1TH DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE °K° GATE vALVE & SHUT-oFF - OTTOM DRAIN W1TH INVERT IN OF BARREL =BOTTOM OF POND as sand ravel or crushed stone as backfill around the i e or anti-see ~ ALVE & SHUT-OFF g p P p
ALL SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT coNCRETE ANTI-FLarnnoN BLOCK collars. Place the fill material around the pipe spillway in 4-inch layers and F-I ~ sEE CHART FoR siziNC & voLUME. compact it under and around the pipe to at least the same density as the ~ N
BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. adjacent embankment. Care must be taken not to raise the pipe from firm ~ O C M
~ ~ contact with its foundation when compacting under the pipe haunches.
NOT TO SCALE NOT TO SCALE ~ O ~ Place a minimum de th of 2 ft. of hand-compacted backfill over the pipe ~ P
spillway before crossing it with construction equipment. Anchor the riser in ~ O place by concrete or other satisfactory means io prevent flotation. In no case ~ „ In
should the i e conduit be installed b cuttin a trench throw h the dam after ~ In
DESIGN DATA SUMI 0 oM~T SIGN DATA SUMMARY POND 1 PP Y 9 9 ~ art 0 on lev. the embankment is complete
'B' NorMal Pool Elevl ~ N ^Mal Pool Elevation 696,00 ~ Z
'C' Top of Riser w,~r~ . . D Spillway Invert E ~ of Riser 700,10 5. Emergency spillway -Install the emergency spillway in undisturbed soil. The ~ achievement of planned elevations, grade, design width, and entrance and exit C llway Invert Elev, 706.00 ~ ~
~0~ Spillway Width [f~ llwa Width [feet] 10' channel slopes are critical to the successful operation of the emergency ~ Y F--
'E' Top of Bern Elegy 'F' Barrel Length [f p of Berri Elevation 708,00 spillway. N Orel Length [feet] 80' ~ r N
'G' Barrel Slze [Inch rrel Slze [Inches] 18' RCP 6. Inlets -Discharge water into the basin in a manner to prevent erosion. Use ~ ~ 0
'H' Drop Box Size [f I Draw wn c 'x 'x12,10' diversions with outlet rotection to divert sediment-laden water to the upper U op Box Slze [feet] 2 3 P O O a uw Down Orlflce [Inches] 3' end of the pool area to improve basin trap efficiency. ~ (n ~
'J' Intnke Elev. tnke Elev, 699.10 p ~j
'K' Botton Drain Slz 'L' Antl-flotation Bl ttort Drain Size [Inches] 6' 7. Erosion control -Construct the structure so that the disturbed area is minimized. W ~ ~ . . . ~ ~ Ln C tl-flotation Block Dir?, 6 0x4 0x3 6 Divert surface water away from bare areas. Complete the embankment before Q ~ C
Anti-flotation Bl tl-flotation Block VoL 2,98 CY MINIMUM the area is cleared. Stabilize the emergency spillway embankment and all other 4. ~Ny _
'M' Antl-Seep Collar tl-See Collar Slze 4-6'x4-6' disturbed areas above the crest of the principal spillway immediately after W W p ] 700,08 & 0.47 i n . ~
2 Year Peak E Pre-Develop) Year Peak Elev. & Discharge [cfs construct o) ~ Pre-Developed Run-Off [cfs] 41,68
Post-Develop Post-Developed Run-Off [cfs] 67,25 8. Safety -Detention basins may attract children and can be dangerous. Avoid
10 Yenr Peak Ei Pre-Develop Year Peak Elev, & Discharge [cfs] 700.77 6 18,47 steep side slopes, and fence and mark basins with warning signs if trespassing Pre-Developed Run-Off [cfs] 74A8 is likely. Follow all state and local requirements.
Post-Develol Post-Developed Run-Off [cfs] 117.60
Z5 Year Peak E Pre-Develop~ Year Peak Elev, & Discharge [cfs] 701.66 & 31.28 Pre-Developed Run-Off [cfs] 92.64
Post-Develop Post-Developed Run-Off [cfs] 146,30 ANNUAL INSPECTION/MAINTENANCE PROCEDURES
50 Year Peak E Pre-Develop Year Peak Elev. a Discharge [cfs] 702,43 & 32,20 -Develo ed Run-Off [cfs] 106,52 ~ Pre p
Post-Develop Post-Developed Run-Off [cfs] 167,74 I. Annual Inspection: Annual inspections shall be scheduled by City of Concord and
B B 100 Year Peak EI Pre-Develop I Year Peak Elev, & Discharge [cis] 702,95 & 32,80 Pre-Develo ed Run-Off [cfs] 115,75 Owner to be performed on the first of June each year.
Post-Develo P Post-Develo ed Run-Off [cfs] 181,99 II. Inspection Activities: r_,
H W
cATTA~I (Ty CATTAIL T ha Latifolia , 1 Gallon Size a) Testing of the emergency drain pipe valve. M~ (YP ) p..~
b) Visual inspection of drawdown orifice. ?.••r c) Visual inspection of the trash rack at the intake orifice. H ~ N
A L----~ PICKERELWE W PICKERELWEED (Pontederia Cordata), 1 Gallon Size d) Visual inspection of the emergency spillway. ll U V
s,~rcw~r~u~r rr~w e) Visual inspection of the pond rim and slopes. ~j A
BLUE-FLAG -F AG IRIS Scir us Validus 1 Gallon Size f) Measurement of the wet pond depth at the dam end of the w BLUE L ( p detention pond (Distance from permanent pond drawdown orifice
NOT TO SCALE Inv r bottom of basin . A _ _ -EDGE OF POND_ . _ - e t to ) Ysuol inspection of all stormwater structures on the served site
M **-SPILLWAY idAY BE 18 -0 9 Zj feedin the detention and. V 1 ~n ~ } 9 P Z
ARIE VARIES VEGETATED INSTEAD ARIE "D' (MIN) ARIE (MIN) Na ~ h) Vsual inspection of the total site drainage basin for adequate
OF PAVED IF CONSTRUCTED _ _ TOP OF BERM EL ='E' ~ ground cover to stabilize site. i Vi ual ins ection of u stream off-site areas feedin into the site
T~~~RN~ ~ ) - - - ENTIRELY IN CUT. W ) s P P ( ) 9 W Boa = f r tentiol off-site se im ntation sources. Nd~'~ drainage basin o po d e NN
~ RI = D VA ES SPILLWAY INV.- D M+1 ~ III. Maintenance activities shall be performed os follows:
a SPILLWAY INV. ~ s~ ° T~ t~ V1 qua - 1. After every significant runoff producing rainfall event and at least monthly:
~ ~ ~ NOF J
i ~ ~ ~ SPILLWAY WEJR UNINC* O ~ 11 a. Ins ect the wet detention basin s stem for sediment accumulation, erosion, trash } P y ~
i ti accumulation, vegetated cover, and general condition. in ci a <:1
4' O.C. 4' O.C. ~ Nom Z F+) TYPICAL TYPICAL b. Check and clear the orifice of any obstructions such that drawdown of the temporary
EDGE ool occurs within 2 to 5 da as desi ned. EDGE OF LITTORAL SHELF P Ys 9
P/LLIYAY SECT/ONA-A SPBLM~AY SECT/ONB-B S 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as
CLASS II RIP RAP OUTFACE PROTECTION. needed.
NOT TO SCALE Mw. THICKNESS= iz•, LENOTH=s'. NOT TO SCALE NOT li'7 ,S>~ILE ~ 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprop, etc.)
~ ~ ~ quarterly to maintain proper functioning.
SLANG Q9VlFRL/N£ A C,ENIFRUN£QR'PR,N/ARY,A9CLIMGIY 4. Remove accumulated sediment from the wet detention basin system semi-annually or when
depth is reduced to 757 of the original design depth (see table below). Removed sediment
r r- i - - T--- _ ----r-------~----------.. ----i _ - - i-_--_- ----T ~ I ~ ~ N I i ~ r ~ T - ------T------------------------ shall be disposed of in an appropriate manner and shall be handled in o manner that will
' ~ ~ ~ a I I ~ _ . ~ ~ i - not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream,
I I ~ I ~ ~ ~ ~ - _ _ I ~ _ _ ~ I I ~ ~ i I i I f ; ~ I _ etc.). _ i 1
- j ~ - - The measuring device used to determine the sediment elevation shall be such that it will ``,~~~aunnrnrgrr~~ I , I ive an accurate depth reading and not readily penetrate into accumulated sediments. , ~ g
I I ! j ~ ~ I ~ ~ P c ,
I ~ I ~ l ~ _ _ ~ - r - I - - - r ~ - i ~ i j---'----....~ i I ' When the permanent pool depth reads 3 feet in the main pond, the sediment shall be w.~r1P a;., _._____--_-.._.r_ removed. ~ R ~
~ ~ ~ ~ I J , - ~ v i Q:Vj :~c ~ ~ ^ I l ~ - l When the ermanent ool de th reads 3 feet in the forebay, the sediment shall be Z,
i . I i ~ ' I I ~ i ~ > 10 IN. I ,y.,v,
~ b I i ~ I i ~ I ! _C ~ ~ ~ , _.f _ _ _ ~ _ i , I, i I i k ~ ~ I _ ~ removed. _ _ _ _ o l ; ~ _ _ _ _ - I .
I ~ I I p I ! I ,,d, c ~ I 5. Remove cattails and other indigenous wetland plants when they cover 507 of the basin
C j I ' _ ' GRASSED WEIR SPILLWAY ' ' - • ¦ - NE6dIT4VELY SL-0PEB I I surface. These plants shall be encouraged to grow along the vegetated shelf and forebay ~ \ a ~_------------------~-----___._.._---i_------ 'rmmnu~~a - - I ~ ~ - berm.
} i , ! ; INV. EL- D ; DRAW-QOWN ORIFlCE. _ i i ~i I r o• i i I ' U
~ ~ ~ ~ a- ~ -•o ~ INV. EL! B r ~ ~ I i ~ , TOP OF ~ERM ELF E' _ - ; . ' ~ - ~ I ~ ; Q I INTAKE DEL J' , ~ 4 0 U• i j 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of u. ~ ~ ! sediment through the emergency drain shall be minimized to the maximum extent practical. R~ISIONS BY
, ~ ~ > I I ~ ' I
R w , ~ I ~ j d ~ 7. All cam onents of the wet detention basin system shall be maintained in good working n o W N _ P ¢ ~ ~ ' ~ ~ ~ ~ order.
~ I _ _ N -t----- - -~tw- 1-~-- ___._.-1-_--~--
~ ~ t i ~ -I ~ i . O _ . O I _ ~ x ~ _ _ _ ~ j Q _ i _ _ _ _ ~ I I
A j ~ ~ , I i I a I i _ ~ ~ ~ ~ _ _ ~ I ~ ~ I ~ I ~ p ~ I
, I ; ' ~ ! ~ ; ~ r - c ^ I ~ '
rn I NOR POOL = . . o L= I • • ~ ~ f ' L 'I i
0 N i , ~ a-- ~ , I ^c ; I i I
~ ' _ - - 1 - _ ' I - N ~ ~i I I I i I I ~ i , i i ~ ~ i i I ~ - r ~ 1 j ; ~ GENERAL NOTES:
~ ~ ` ' ! eonCM oRNN. I ~ ~ ~ ~ ' ! I ! ! ~ j ~ F1tOM TOP OF INLET BOOL , I r ~ - ~ 1 i I i Ei90x i LF± ~ ; - ALL BMP FILL EMBANKMENTS SHALL BE COMPACTED TO 957 STANDARD PROCTOR.
3 i ~ _ _~I , I ~ , ~ i ~ BOTTOM POOL EL= 'A' TTOM A , s • • t.25x _ ~ )L EL A '
~ ~ ~ , I a BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION. I - Ii
10 MI . _ _IGAL _ ~ _ - ~ I i ~ PROPOSED GRADE ~ 1 ~ I
3 ~ - - - - _ _ _ _ - ~ -r---- PROPOSED GRADE I i ~ Date: 12/09/03 i,
IIJTTORAL SHELF TO BE PLANTEp ~ ~ I I ~ iWI1H ACCEPTABLE AQUATIC PLANT - i ~ I I I N. ~ 1 -50 Hor.
~ i P NTING DET. H ~ WN IN LA PECIES ASS , S P ~ Scale: N/A i
z I ~ ~ _ I L PERMANENT CONCRETE .ANCHOR , Q ~ i ~ i I I , I ~IOR i ~I I ~ ~ Drawn: JMY -
~ , , i ! I I , ~ I , I ' ~ I I ~ I Checked: DLM
i I ~ ' U I I----.---------
LLJ TWO M x0-6 THIC 'M'x0,-6` THICK .y Job: 03-07-06
CONC. AN-n-SEEP i C. ANTI-SEEP COLLARS.
CD / I co tLQ • ALL CONNECTIONS TO INLET BQX MUST BE Sheet )X MUST BE
SEC ,SEALED WATERTIGHT. ? , j- BEFORE YOU DIG I _ CALL 1-800-632-4949
PDP M4' IV. 9E aA r PD- I N.C. ONE-CALL CENTER
s ITS THE LAW I
DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: of Sheets
PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN Location: PR-20

~ LVU
~ ~ i ~ t ~R _ r
'
E ~ _ ~ ~ ~ ~ O ~ ~ >
~ ~ / ~ ~ ~ 7 )
Y \ _ ~ t / / \ \ ~ o ~ ~
/ 01 ..r ~l Ol..,~ J) r. v ~ ~
/ ~1 ~ STOCKPILE J N ~ Q 0.00 ~
1 l ~ _ 1 i ~ 710 ~ ~ ~ ~ ! ; ` ~ 720! n AREA ~ ~ ~ ~ N „
~ " 71 J1 a ~ _ w,~o ~ ~
r F~ ~ 708 STAB CONSTR ION ENTRA \
F ~ U T ~ 708 T , 7 06 g" R DETAIL 30.11. Y ~ ,
T W S ~ ~S ~ ' „ GRAVEL & RIP FILTER ERM BASI ET M ,z - 7os ~ pOp~ err 00 ~ BASI 730 ~ r V c
e _ T _ _ ER DETAIL 30.1.2 ' qC K D . ~ 7os FNT ~ 0 ~
IRE FABRIC INLET TECTION 1 ~I,,~ ~ \ ~ i T TECTION V Q ~ { "O ~
~ , a PE TAIL:' ON SHEET G TYf HEET G TYP. v ~ ~ ~ ~ O ~ ~
yT ; C13~} i ~ ~ rt
N7g.5 a ~ o 7 4 j„ ~---_,,,1 2 O r
F ~i )314 99 ~ / / ~ 6)6.4 , 1 00 ~ 'S / /0:-; 676.4 ~ ~ ~ v
-730 J 1~ ~ p ~ ~ ) TEMPORARY DIVERSION SWALE PER 0
~ ~ ~ ~ ~ p~;~ i 7 10 RACTrcE DE`FAIL 30.05 TYPICAL SWALE TO ~ y Q,
AR ~ EA t.`'~ . ~ ~ " ~ ~ i REMAfN AFTER CONSTRUCTION TO a DIVERT W'kTER~TO HW3. p` ~
' ~ r~~ B ~ ~0 R30.00' ~ R CQ TD
! TE ORARY IV - - ~S, 25,00' " f~ D ERSION S ALE o ~ _
`i R 'r ~A R DETAIL. 30.05 TY ICAL Cp R30.00 U _ T ~ , . 7os NO SCALE
P
~+16.6 CB3 _ „ 3 'ON
k LEGEND ~ O
- ti PARTS r' ~ BUS DELIVERY ~ ~ R45.00' J I--I ~ ~
~ n KIN ~ ,TRAI R R ~ TEMPORARY RISER BASIN (~j rr~~ LE B#
dos ;>r 799 742 i ' - ~v 799 74L SF STORAGE PER DETAIL 30.0E ~ ~ N
18.360 / TEMPORARY DIVERSION SWALE ~ M 18.360 AC TD ~ cn o PER DETAIL 30.05. ~
- r- p 0.179 Acres ~ 155,050 ARTS , DI7 U O
~ 2,365 Sq. Ft. ~ n 'PROP FF 7f~,1 + - 2.8pp S / F O L RIP RAP OUTFACE PROTECTION ~ ~ In
Field Lgcoted i 31. ' wetl6nds ~ MACNIN ~ ~ R TAI ~ PE DE L 20.55. Q~ ~ ~
® ESN FAgRIa ® ),000 aP ATI pN ~ ® ~ S F ` SHOP 710 TEMPORARY SILT FENCE
c B 2 22 Ncre~ r 31 F~a~s ,400 S.F 8 0 PER DETAIL 30.06. ~ ~ ,000 S.F ~
~ ~ RABBIS aC ~ ~ _ STABILIZED CONSTRUCTION ENTRANCE
~NFETME7 ~ 0 PER DETAIL 30.11. ~
~YN ~ .N N 8 0 RANSPQRT i" #4690-15-0938 ~ p~CK XIT 15.D0' Now or Formerly TSB TOP OF SLOPE BERM ~ ~ O ~
~ ~ - i ~ f- ~ ~ U PER DETAIL 20.50, J City of Concord OW Q, ~
~ SU ® g-AS T $EMg~Y TIRE Deed Book 4059 Page 299 ~ 0
453 461 F _ ~ ; 9~ooos.F glY 2 ® WIRE FABRIC INLET PROTECTION O ~ 0 338 y N S.F PER DETAIL ON SHEET GR-2 W
f ~ ~ [ If Q 6 .00 GRAVEL & RIP RAP FILTER gERM BASIN n, ~ C
10.410 AC ~ ~ r r U ~ W J PER DETAIL 30.12. ~j O
® t n ® Dl8 ~ ~ d In
I ~ `l 1 ~ - - - EXISTING CONTOURS o
3.7. i ~ ASS a E ~ s+~ N1gEy~ i PROPOSED CONTOURS
° ~ ~ TD 7 3) FINISNIN 1 ,1
~ n 710 P ,650 S. F, ~ o J ~ LC ~ LIMITS OF CONSTRUC110N TYPICAL ( )
ni 9.00' ~ o o E ~ S S~' ST SOIL TYPE BOUNDARIES (TYPICAL)
r ~ ~ r _ p..i TEMPORARY SILT FENCE M"~ SPOT ELEVATION MARKER
_ In l - v PER DETAIL 30.06 TYPICAL T.C.=TOP OF CURB " ; ` .f c, X T.C. ( )
a 1~ r, M..~
~K8 ~ ' ~ C~~ ~ 2 ~ 0 a
3/4" Iron 1 T °o ~~~pvyv ~ ~ ~ ~ x _
Pipe I ~ ~ Q uj ' ~ PAItV - F w
. Z$ . ~ 1 0 ~ - ~ ! ~ 'OQOS.F, a~ J ~ ~ STORMWATER ~ DETENTION: POND ~ ; Q I~
sy+? _ i o ~ PER DETAILS ON o
1 ~ TEMPORARY RISER BASIN #2 - 35 p;s. SHEET PD-1
~ 15" CMP BARREL 18" PERFORATED MP RISER ` ~ I ~ 10 ANCHOR RISER IN 1'-6'x1'-6"x1'-0" DEEP n ~y E E ~ ~ PERMANENT DETENTION POND TO BE USED J' A OSp II dS STO ~ AS A TEMPORARY RISER BASIN DURING
S E NE d ~ CONCRETE BLOCK. INSTALL 4'-6" ANTI-SEEP R, ~ CONSTRUCTION. SEE DETAILS ON SHEET PD-1 ~ A
COLLAR ON BARREL JUST BELOW CENTERLINE OF 7 e 70 i. T NGfNE S S:F y V` i y STO - ~ H
1 BERM. CONSTRUCT 8' WIDE TRAPEZOIDAL ~ ' I EMERGENCY SPILLWAY WITH 3:1 SIDES IN VIRGIN ~ Y' R. BOT.-688 10' CONCRETE LINED EMERGENCY
SOIL. SEED ENTIR .r ASIN AND SPILLWAY P ~ NCE I E:~ UON n LY l 10 ~ SPILLWAY PER DETAILS ON SHEET PD-1 N
~ ~ COMPLETION OF CbNSTRUCTION. BOTTOM OF' R DI21 y RI32 w rr D121 10 3„ V 6 RG ~ C,~D W
~ ~ BASIN=690, TOP.~;OF RISER=692, SPILL~NAY ~ ~ p.. 10 ~ INVERT=69 & TOP F ERM= 4 CB10 : ~S CO ~ ~ 3 0 B 69 A5 r ~ GENERAL NOTES: W DI2. FES
O ~ ~ PER DETAIL 30.Q1 TYPICAL ~ ~ 708. 26.00' E U E TRAN PO ES2 1. BOUNDARY SURVEY INFORMATION PROVIDED BY PIEDMONT DESIGN ASSOCIATES, P. A.. i
~ A K ENT 2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION OF ALL EXISTING OVERHEAD
n a s. Z I ~ a_ A 20.00 y CONNECTO HW30 UTILITIES (SHOWN OR NOT SHOWN ON PLANS) PRIOR TO ANY GRADING ACTIVITIES.
TEMPORARY SILT FENCE t ~ 6 RB#2 T _ ~ ~ AN Y C N F 1 T H ~ ` 0 LC S S ALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER. ~ H
1 _ _ ,294 SF PER DEF~I.L 30.06 TYPICAL 6 ~ M ~ ~ y rr 3. ANY OFFSITE BORROW SHALL COME FROM APPROVED MINE SITE. - ~ V1 ~ JB fi DI 8 ~ 4. ALL EROSION CONTROL MEASURES MUST BE MAINTAINED UNTIL ALL DISTURBED M•••~
~ ~~S FENCE I 1 9.00' '30.0 ' O6 v V 1
I 1 -Toe o " ~ ~ SB AREAS HAVE BEEN PERMANENTLY STABILIZED. ADDITIONAL MEASURES MAY BE 0 ~ REQUIRED AS SITE CONDITIONS WARRANT.
?n ~ ,FLUME GATE L_ ~ s ' S. SEE SHEETS GR-2 AND GR-3 FOR EROSION CONTROL SPECIFICATIONS AND DETAILS.
- - _ _ S CB1 AT 5 PROPOSED , 6. ALL STORM INLETS SHALL BE PROTECTED BY WIRE FABRIC INLET PROTECTION rr y ENGINE V
_ a 2' FLUME o ~ - - _ ~ O6 705.$8 011 ~ BUILDING AS PER DETAIL ON SHEET GR-2. SEE SHEET GR-2 FOR STORM DRAIN DATA.
- _ ~ ~ ~ 2' FLUME _ _ ~ - - CB12 ~ - i 7. ALL STORM OUTLETS SHALL HAVE RIP RAP OUTFACE PROTECTION AS PER DETAIL 20.55.
' r - ` o 0117 X92.3 , 8. ALL FLARED END SECTIONS SHALL gE PROTECTED AT THE TOP WITH TEMPORARY SILT 04 ' y N ( ~ FENCE PER DETAIL 30.06.
' 3/4" Iron ~>C.705.8 Dll f2 p ~ Pipe Sa - \ ~ ~ 9. PERMANENT GROUNDCOVER MUST BE ESTABLISHED WITHIN THE PROPOSED DIVERSION r..y
( ( _ 16 06. T.C. 06. T.C. ~ T g SWALES. ADDITIONAL MECHANICAL MEASURES MAY BE REQUIRED IF THE VEGETATIVE w
289.1 BUF ~ ° - Rebar 2 ~ER C ~i- - _ WIRE FABRIC INLET%PROTECTION ~ COVER CANNOT BE ESTABLISHED AS PROPOSED. ~Q
1 1 Z LC ~ . - ~ 83° ONED "~~c ~PF,~DETAIL ON ,SHEET GR-2 TYP ~ ~Q
37 3 „ 58:3 /RE ~ ~ - 5 W 9 SI EN ~c ~ 8 ~ TI . ~ ~ #4 Rebar ~ ~ a. 5 AL if LC ,n 7 6 'o y ~ q ~ U ~ ~h
_ 1'ota 3 I SE #4680 95-4434 S ~ b CoB ~ ~ ~ ~ ~ 702 G Q~ P ,
Now or Formerly S 1" Iron Pipe ~ ]3. ~ a + - #4 5 Shwe U. & Christine M int ~
Deed Book 76 P y Rebar C? 0 2 oge 153 , S ~p. TEMPORARY DIVERSION SWALE #5 ti ~ ~ G ' ~.0 6
lat #1 $ethony Woods Subdivision #4680-95- ~ 1 - PER DETAIL 30.05 TYPICAL ` Rebar ' - 0 ~ ' % TSB ~ -
Plot Book 20 Page 7 ' Now or F rrsel ~ / .y a ~ 524 ° 1 Sh e U. risfine Myint #4690-95-9309 524 S88 1 E ~
`D d B `a 762 Pa e 153 Now or Former) ~ .d P; TO BE DEMISED TO ; ~ % ~
} Lot` hon W ,9 Shwe ll. & Chri i y TO BE DEMISE c # y oods Subdivision stne Myint ' THE CITY OF t ~ THE CITY OF CONCORD Q ~ v TOP OF SLOPE BERM
~ la Book 20 Page 7' ~ Deed Book 762 Page 153 - p PRIOR T 0 SUB ~ Lot #3 Bethany Woods Subdivision + 86 PRIOR TO SUBDIVISION ' ~ ' f PER DETAIL 20.50 ~ nJ~%`
~ 4690-05-0348 I " o Plat Book 20 Page 7 # n12, a ~ REVISIONS BY
~ Now or Formerly TD ~ `,Shwe U. & Christine Myint D12 ~ 1 I ~
d Deed Book 762 Page 153 ~ ~ r
o Lot #4 Bethony Woods Subdivision ~ 5 00 Plat Book 20 Page 7 p N ~ PROPOSED 3 ~ ~ / 'ti PROPOSED ~ U ~
N ~ ~ ~ ' ~ 30,000 S.F. ti 30,000 S.F. ~ J / 0_ r ~
c~ ~ 0 HANGER HANGER / v ~ ; , ~ w 'PROPOSED t ' "
o N N F.F.=70 N ~ M? 5.00 m r.'L. F.F.=705.00 ~ 0.465 Acres 7 ~ r / +n ~ o TAXI-WAY _ % ~ er ~ 20,236 Sq. Ft. ~
N ~ . ~ p ~ V ro ~ J Field Located' ~ cp
~ ~ Wetlands V f ' o N J
~ - ~ ~ ~ 167;'f 71 SF ylnt - - ~ i+ z TEMP RARY RISER BASIN #1 167;'171 SF D124 15" RCP 12" AMP BARREL & 18" PERFORATED CMP RISER
~ r a.~(v' _ V,1 n 3.838.~AC 3.838, 'AC 125 ANC~OR RISER IN 1'-6"xt'-6"xt'-0" DEEP
w 6 ~ V z 1 j- I o g o _ f CO CRETE BLOCK. INSTALL 4'-0" ANTI-SEEP
m a ~ 3 Y 704 u CO LAR ON BARREL JUST BELOW CENTERLINE OF ~i 702 ~
~ ~ ~ ~ r. RB~1 I B M. CONSTRUCT 8' WIDE TRAPEZOIDAL ~ 10,463 5E' ~ ERGENCY SPILLWAY WITH 3:1 SIDES IN VIRGIN ~ ~ Date: 12~09~03
~ ~ SOIL. SEED ENTIRE BASIN AND SPILLWAY UPON /
~ ~ ~ ~ ~ ~ ~ z ~ _ Z I ' OMPLETION OF CONSTRUCTION. BOTTOM OF - UB33 ~ ~ =60 HOB. - _ _ _ T _ ,V ASIN=672, TOP OF RISER=674, SPILLWAY Scale: ,
~ ~ _ T56 ,J NVERT=675 & TOP OF BERM=676 AS 2 CONTOURS
U " PER DETAIL 30.01 TYPICAL Drawn: JMY
\ - _ l n ~ _ -BEFORE_YOU _DIG ! . _
i_ PLC N UAL I
O t - 1 1 2 Iron .C L ONE CALL CENTER unecKea: uum L ''ter IT'S THE LAW 1 Con'uekc~ ~ab:03-07-06
M Pipe #4 Rebar 24 0 -
Lot #5 j 246.89 0' 89'41 '58~.... monument 310.0 Sheet
Bethany Woods Subdivision 1 ron o r- Pipe ~ 1 ron 5 eb GR _ Pipe S89°41 56;,W TEMPORARY SILT FENCE
Plat Book 20 Page 7 '54'39"\,N PER,, DETAIL 30.06 TYPICAL Tie Line
I 84 Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CON U4589-9725422 i it
SENT OF PIEDMONT DESI( J )NT DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: of 3 Sheets

~a--,.---..
NARRATIVE: T RM DRAIN DATA: SO
Ryan Companies US, Inc. is building a racing facility for Ganassi Racing on 6. Clear vegetation and grub stumps from all areas to be graded.
approximately 22.20 acres located off proposed Westmoreland Drive. The scope of INLET
work will involve clearing, grubbing, grading, storm drams, aggrgrate base, paving, 7. Strip topsoil and stockpile on site for redistribution upon completion of grading. PIPE PIPE MIN. FULL FLOW ~ ~ ~ ~ STRUC. ROAD C.L. OR T.C. INVERT INVERT INVERT INVERT PIPE
building construction, water, sanitary sewer and associated utilities. Disturbed areas IN #2 IN #3 OUT SIZE LENGTH SLOPE SLOPE VELOCITY ~ LD. STATION ELEV ELEV IN #1 r V' ~
will be protected by a riser basins, silt fence, temporary diversion swales, top of 8. Install temporary diversion swales as indicated on sheet GR-1 to divert water and slope berms and wire fabric inlet protection. Total disturbed area is estimated to be sediment into erosion control measures. e ~ 0. ^ ~p
22.06 acres. Upon completion of construction all disturbed areas shall be + 705.03 705.01 NA NA NA 702.07 15 28 0.50 0.50 3.72 0. ~ ~ C61 0 56.40 ~N~
permanently stabilized with grass as per the attached seeding specifications. 9. Install permanent detention pond for use as a temporary riser basin during construction. NA 701.73 15 76 0.50 0.50 3.72 w ~ ~ C62 0+56.40 705.03 705.01 701.93 NA ~ ~o
Follow details on sheet PD-1. 184 0.50 0.50 4.21 v N o C63 1+16.67 707.08 706.57 701.35 NA NA 701.10 18
GENERAL: ~ i~ CB4 22+55.99 708.25 708.27 700.18 NA NA 699.98 18 52 0.50 0.50 4.21 ~ ~
10. Install all storm dram structures per plans. •r.w d; ~
The work shall consist of furnishing labor and material, equipment and performing all operations CB5 22+00.00 707.64 707.66 699.72 NA NA 699.22 24 64 0.50 0.50 5.09 ~ ^
installation of all work as s ecified herein and as shown on the 11. Install all underground utilities. (Contractor shall schedule connections and locations of necessary for a complete p existing utilities with appropriate utilities and agencies prior to construction). 0.50 0.50 5.91 a CB6 19+40.35 707.54 707.56 698.90 NA NA 698.40 30 192 0 z ~ ~ ~ y~
drawings. D17 NA NA 708.50 697.44 NA NA 697.24 30 148 0.50 0.50 5.91 ~ v~~
12. Fine grade roads, parking and building pad to subgrade elevations. 696.50 NA NA 696.30 30 60 0.50 0.50 5.91 a D18 NA NA 709,00
1. Work shall consist of installation of temporary erosion control measures; clearing; o
grubbing; stripping topsoil; roadway and general grading; controlled fill; utility installation re oration of sub rade~ fine radin concrete curb and utter; avin and 13. Place concrete curb and gutter as called for on plans and backfill with clean, FES9 NA NA NA NA NA NA 696.00 NA NA NA NA NA A ~ o ~ ~~o..
' p P g g g g p g debris-free earth. permanent seeding. All disturbed areas shall be left in a stabilized condition upon ~ .o~~
completion of this contract. 9 15 92 0.99 0.50 5.24 ~ ~ ° C610 5+93.33 707.37 706.86 NA NA NA 703.2 .c
14. Place stone base and asphalt paving according to plans and specifications. D111 NA NA 705.70 703.01 703.01 NA 702.76 18 72 0.50 0.50 4.21 ~ .E
2. The Contractor is expected to examine the site to familiarize himself with site FROM CB10 FROM C613
for shall careful) read all the s ecifications and examine the 15. The Contractor shall sow seed (including fertilizer and mulch) on all exposed earth areas conditions. The Contrac y p
drawin s and details in order to thorou hl familiarize himself with the work to be done. within 5 days of the completion of grading in that area. Seed, fertilizer and mulch shop g g Y be of the t e called for, for either temporar or permanent grassing as required. + NA NA NA 703.47 15 28 0.50 0.50 3.72 CB12 7 50.00 706.39 706.41
Any work shown on the drawings or included in the specifications, or reasonably implied YP Y CB13 7+50.00 706.39 706.41 703.33 NA NA 703.13 15 24 0,50 0.50 3.72
b either shall be erformed the same as if called for b both. Contractor shall inspect seeded areas at 15 days after initial seeding and repair all bare Y P Y areas. Non-stabilized areas shall be stabilized with erosion control blankets or other D114 NA NA 705.00 702.40 NA NA 702.15 24 172 0.50 0.50 5.09
acceptable methods as approved by the Engineer. U N
EARTHWORK: D115 NA NA 705.50 701.29 NA NA 701.09 24 68 0.50 0.50 5.09 O
16. The Contractor shall be responsible for maintaining all sediment and erosion control D 116 NA NA 705.00 700.75 NA NA 700.25 30 68 1.91 0.50 11.56 o N
1. A tem orar bench mark shall be established on site. measures throughout the duration of the construction project. Maintenance shall P Y include, but not be limited to: cleaning silt out of dram structures, adding extra gravel 0.50 0.50 5.91 D117 NA NA 705.50 698.95 699,75 700.00 698.75 30 84 r~
FROM DI20 • ~ FROM DI16 FROM DI19 ~ O O
2. The Contractor shall be thorou hl familiar with the Erosion Control Se uence as stated or riprap; regrading swales and washed out areas; repairing, replacing, or adding silt g Y q fence, etc., all as re uired. 0.50 0.50 3.72 ~t ~ D118 NA NA 703.60 NA NA NA 701.16 15 88 to
hereafter and shall follow this sequence to insure that no off site pollution occurs during q or after construction. Any deviation from this stated sequence or plans and details shall ~ ~O
and Cabarrus Count . 17. Contractor shall clean all storm drainage structures, pipes, culverts, etc. prior have prior approval of the Owners Engineer y D119 NA NA 703.65 700.72 NA NA 700.47 18 144 0.50 0.50 4.21 ~ ~t
to final payment. .50 3.72 ~ ( D120 NA NA 704.00 NA NA NA 700.42 15 84 0.50 0 N
18. At the end of the project construction and after the permanent ground cover is 9.98 s Z D121 NA NA 709.50 698.33 NA NA 697.83 36 128 1.12 0.50 RS ~
3. Top Soil: Strip all top soil from the area to be graded and stockpile on site for established, the Contractor shall remove all temporary erosion control structures and seed c ~ 0 6.68 a'' a~ D122 NA NA 709.00 696.40 NA NA 696.20 36 40 0.50 0.5
redistribution upon completion of grading. all remaining disturbed areas. The Contractor shall remove the filter stone & wire mesh w (
4. Soil Borings shall be taken in the area of the building by a certified soils engineer and and all accumulated sediment after all disturbed areas have been stabilized. FES23 NA NA NA NA NA NA 696.00 NA NA NA NA NA ~ N Os
the results reported to the Owner's Engineer. This work shall be done if directed by the ~ ~ o (0
ineer. 19. Contractor shall "hold the Owner harmless" from financial penalty, which could be Owners Eng invoked by government authority, due to Contractors negligence. .50 3.72 ° a. D124 NA NA 703.75 NA NA NA 699.89 15 116 0.50 0 cn 0 0
5. Fill Dirt shall be placed in the areas indicated on the plan. Fill material shall be free of D 125 NA NA 701.75 699.31 NA NA 699.11 15 100 0.50 0.50 3.72 W o a~
'll be detrimental to construction of a stable fill. SEEDING SPECIFICATIONS brush, rubbish, and other material that wi ~ cd u7 c
All fill shall be compacted to a minimum of 95~ Standard Proctor with proper moisture D126 NA NA 701.75 698.61 698.61 NA 697,86 24 256 0.59 0.50 5.51 Q ~ ~ w ~
control. Maximum thickness of la ers of fill to be compacted shall not exceed 8". No SLOPES 3:1 or FLATTER Y FROM D125 FROM D127 ~ ~
slopes shall be greater than 2:1. The entire sub-grade after compaction shall be smooth 0.50 3.72 ~ D 127 NA NA 703.75 NA NA NA 699.19 15 116 0 50
and uniform slo e. 1. Apply agricultural lime at the rate of 90 Ih/1000 sf. P 2. Apply 10-10-10 commercial fertilizer of the rate of 20 Ib/1000. sf. D128 NA NA 707.50 696.36 NA NA 696.16 24 32 0.50 0.50 5.09
6. Cut Material to be excavated is assumed to be earth and other materials that can be 3. Seed in accordance with the following schr~dule and application rate: removed by power-shovel, bulldozer, motori: ed pan, or normal excavating equipment; 29 NA NA NA NA NA NA 696.00 NA NA NA NA NA FES
but not re uirin the use of ex losives or drills. If rock as defined herein is DATE TYPE PLANTING RATE
q 9 P ~ ) encountered within the limits of excavation, the Contract Sum will be adjusted in 0 HW30 NA NA NA 684.00 NA NA NA 42 60 2.80 0.56 17.51 M..~ H
vi i ns for "Chan es in the Work" of the "Conditions of the Aug 15 -Nov 1 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf compliance with pro s o g 631 NA NA 706.00 682.32 684.32 NA 681.82 48 456 1.54 0.55 14.19 J
Contract". When rock is encountered, Contractor shall notify the Engineer immediately; FROM HW30 FROM RI32
f rther until instructions are iven and measurements made for Nov 1 -Mar 1* Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf and shall not proceed u g
f t blishin volume of rock and the value of excavatin same. ,Abruzzi Rye 25 Ib/ac ar 1/2 Ib/1000 sf the purpose o es a g g NA NA 701.94 NA NA NA 688.00 18 80 4.60 1.00 12.76 RI32
Rock is defined hereby as that material which cannot be ripped by acrawler-tractor 04.00 674.80 NA NA 674.60 48 92 1.74 0.55 15.08 w JB33 NA NA 7
minimum of 50 000 lbs. drawbar ull at one mile er hour ullin a sin le- Mar 1 -Apr 15 Tall Fescue 200 Ib/ac or 7 Ib/1000 sf rated at a p p p g g tooth ripper. Equipment shall be in good repair, and shall be in proper working w~ NA NA NA ~ HW34 NA NA NA NA NA NA 673.00 NA NA M--~ ~
Apr 15 -Jul 30 Hulled Common or Bermuda 30 Ib/ac or 1 Ib/1000 sf condition. RWI E NOTED. ~ ~ T RM DRAIN PIPE TO BE RCP UNLESS OTHE S ~ NOTE. ALL S 0 U
Rock is further defined hereby as boulders larger 'than i/2 cubic yard in size. W~A
i f unit- rice for rock unless minimum-szed Jul 15 -Aug 15 Tall Fescue and 200 Ib/ac or 7 Ib/1000 sf No payment well be made on the bas s a p
utilized as re uired hereinbefore. Brown Millet or 35 Ib/ac or 7/8 Ib/1000 sf equipment or better Is q TEMP. RISER BASIN DATA A
as removal of material b drillin blastin or wed in Sorghum-Sudan Hybrids 30 Ib/ac or 3/4 Ib/1000 sf Rock work Is defined hereby y g, g g g SED. SED. SED. U~ Z
Rock shall be stripped for measurement before excavating, and no rock excavated or RISER DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAG STORAGE STORAGE WEIR TOP TOP BOT. BOT. BOT. Z
surement will be allowed or aid for as rock. Measurement and * Heavily mulched during January -March period. Coat applied at the rate of 5-7 gal/1000 sf loosened before mea p a merit therefore shall be b number of cubic arils re uired to brin the excavation or 200-300 gal/ac. N TH WIDTH LENGTH WIDTH LENGT BASIN a BASIN AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LE G
PY ~ ~ Y Y q 9 to the required surface or grade as required by the Contract Documents. The Owner U FT ELEV. Q W
h rades should excessive roe k be encountered. 4. Mulch with straw applied at the rate of 75-100 Ib/1000 sf. and anchor with asphalt emulsion may adjust t e g NUMBER ACRES ACRES) (CF) (SF) (FT) (FT) (FT) (FT) (FT) (FT) (FT) ( ) ~ ( ) (
tack coat applied at the rate of 5-7 gal/1000 sf or 200-300 gal/ac. 9990 9042 1.0 73 146 10 81 154 69 142 672.00 1 5.55 5.55 0
.0 101 202 15 128 229 97 198 690.00 2 10.87 10.87 19566 17709 1 ~
ER SIGN CONTRO SPECIFICATIONS sLOPES GREATER THAN 3:1 To 2:1 0 L Desi n Re uirements: Freeboard 2.00 Feet C11 9 q [--I
i Nhr ~ 10 Yr Storm Intensity 6.80 Q
Re uirements of the Contract Documents a I to all work in this section. 1. Apply agricultural lime at the rate of 90 Ib/1000 sf. q PP Y 2. A I 10-10-10 commercial fertilizer at the rate of 20 Ib/1000 sf. PP Y Riser Height Above Sed. Storage 1.00 Feet ~ W
3. Seed in accordance with the following schedule and application rate. ALL TEMPORARY RISER BASINS TO BE CONSTRUCTED AS PER DETAIL 30.01
GENERAL: Provide the work of this section for erosion and sediment control as indicated and
s ecified as follows: DATE TYPE PLANTING RATE P PERMANENT POND AS TEMP. RISER BASIN DATA
Construction entrance; Sediment basins; drainage structures; inlet protection; a SED. SED. SED. ~
rotection and ermanent seedin Mar 1 -Jun 1 Sericea Lespediza (scarified) & 50 Ib/ac or 11 Ib/1000 sf silt fence; filter cloth and riprap outfall p p g
Mar -Apr Add Tall Fescue or 150 Ib/ac or 3-1 /2 Ib/1000 sf DRAIN. DISTB. MIN. REQ. MIN. REQ. STORAG STORAGE STORAGE WEIR TOP TOP BOT. BOT. BOT.
PERM. AREA AREA STORAGE SURF. AREA DEPTH WIDTH LENGTH LENGTH WIDTH LENGTH WIDTH LENGT BASIN O
I I ITY: The Contractor shall furnish the Owner a s stem of Mar -Jun Add Weeping Lovegrass 5 lb/ac or 1/8 Ib/1000 sf POND ACRES ACRES CF) (SF) (FT) (FT) (FT) (FT) (FT) (FT) (FT) (FT) ELEV. ( ) ( ) (
CONTRACTORS RESPONS B L y temporary controls to minimize soil sediment erosion during the construction period caused by 1 3.38 3.38 6084 5507 1.0 58 116 10 66 124 54 112 688.00 W
s called for on the drawin s and as site Jun -Sep 1** German Millet or 40 Ib/ac or 1 Ib/1000 sf storm water runoff. Work shall be performed a g Design Requirements: Freeboard 2.00 Feet
Small-Stemmed Sudan Grass 50 Ib/ac or 1.2 Ib/1000 sf conditions warrant. 10 Yr Storm Intensity 6.80 iNhr
e 1.00 Feet Riser HeightAbove Sed. Storag
Sep -Mar 1 Sericea Lespediza 70 Ib/ac or 1-3/4 Ib/1000 sf NT POND TO BE CONSTRUCTED PER DETAILS & SPECIFICATIONS ON SHEET PD-1 A,,...•~ PERMANE ~ ,
h ace tance it is the Owner's res onsibilit to ro erl (unhulled-unscarified) 150 Ib/ac or 3-1/2 Ib/1000 sf OWNERS RESPONSIBILITY: After t o c p p y p p y P ,2 - ~:p ~j;7
maintain the work. Tall Fescue Millet or Sudan 20 Ib/ac or 1/2 Ib/1000 sf RIP RAP OUTFACE PROTEC110N DATA ~ Q : . ~
STRUC. Do Q D50 La W@Pipe W@End Dmax Thickness = U : r` ~
EROSION AND SEDIMENT CONTROL: The Contractor shall rovide erosion and sediment Temporary -Reseed September 1 at recommended rates. P 0 LD. Inches CFS Inches Feet Feet Feet Inches Inches S O r ..b ti
control during the period of construction of this project. The Contractor shall protect and _ anchor with as halt y5 WASHED STONE CUSS I RIP RAP FES9 30 27 6 16 8 19 9 14 ,,d~,,,,.~' ~ c•~
~ maintain the tem orar erosion and sediment control structures which rovide tem orar 4. Mulch with 3 straw applied at the rate of 50 90 Ib/1000 sf and p i'THICK 1'THICK « a' HIGH MIN 9 23 11 16 , 00~~` I ~ FES23 36 32 7 20
o P Y P p y emulsion tack coat a lied at the rate of 5-7 al 1000 sf or 200-300 al/ac. F sediment ollution control as shown an the drawin s. The Contractor shall rotect and PP g / g pow } p 9 P Fro / ~ / 9 24 12 5 13 6 15 8 11 ",Nmn w ~ ( ~ / FES2
~ maintain the temporary facilities as necessary to trap soil erosion and sediment pollution created 1 30 15 23 ~ HW34 48 101 10 26 12 REVISIONS BY
by storm water runoff. Maintenance of these facilities shall include, but not be limited to, ~ ~ ALL RIPRAP OUTFACE PROTECTION AS PER DETAIL 20.55. PIPE
o regrading and filling of washed out areas, adding erosion control blankets, adding silt fences
and riprap, and reseeding and mulching of the swales during the construction period if deemed ~ d necessar b the Owner, Owner's En ineer, or Cabarrus County (Thomas Smith 704-920-2887). GRAVEL & RIP RAP FILTER BERM BASIN DATA: ~ ~ DRAIN. DISTB. MIN. REQ. MIN. REQ.
Y Y 9 ~ GRRFB AREA AREA STORAGE SURF.AREA
m 0 / ~ BASIN (ACRES) (ACRES) (CF) (SF)
cv ~ / 1 2.26 2.26 4068 3682
0 EROSION CONTROL SEQUENCE: The following sequence of construction shall be staged as ~ METAL "T" POST ~ ~ ~ , ~ GRAVEL & RIP RAP FILTER BERM BASIN PER DETAIL ON SHEET GR 2 v+ ~ ~ i
required to provide acceptable erosion and sediment control. WIRE FABRIC #5 WASHED STONE F~.° F,,o SEDIMENT STORAGE AREA
iv #5 WASHED STONE WW FABRIC PERSPECTIVE VIEW
1. Contractor shall arrange apre-construction meeting with the Owner, the Owner s
3 En ineer and a re resentative from Cabarrus Count Thomas Smith 704-920-2887 z 9 ~ P Y~ ) a ~ N prior to any land disturbing activity. ~5 WASHED STONE
~ N A ~ 12~~ M1N. INLE _2, CLASS I RIP RAP SEDIMENT STORAGE ZONE 1~ FlNISH GRADE
°i 2. Install construction entrance which shall receive a minimum of 6" depth of 2"-3" coarse 1. GRAVEL AND RIP RAP FlLTER BERM EA RAP FlLTER BERM BASIN SHOULD BE USED TO PROTECT EXISTING PIPE STORMWATER STORAGE ZONE Date: ~ 209/03
~ a re ate In OOSe meaSUrement at the OCatIOn ShOWrI On Sheet GR-1. An Sediment z INVERTS THAT DRNN 10 ACRES OR LES 99 9 Y JN 10 ACRES OR LESS.
~ accumulation on ad ~acent ublic roads as a result of this project and traffic ~ 2. DIMENSIONS SHOWN ARE THE MINIMUM ~ J P N ARE THE MINIMUM ACCEPTED UNLESS OTHERWISE NOTED. Fco i : 1 °=100' Hor. w ~ Sca e N A
Q from this project shall be immediately cleaned off by the Contractor. " GRADE in M /
Q Minimum Stabilized Construction Entrance Length = 100' as per detail 30.11.) ~ PIP A I PIPE Drawn: JMY
~ 3. Install temporary silt fence where indicated on sheet GR-1. Protect all existing INLET STRUCTURE POST MAX. SEDIMENT DEPTH Checked: DLM
(fl FAN OUT POINTI
storm drain structures with wire fabric inlet protection per detail on this sheet. r HLAI\~ VILW SECTION Job: 03-07-06
SECTION H-H
~ 4. Install temporary riser basins. 9 WIRE FABRIC INLET PROTECTION RAP FILTER BERM BASIN Sheet GRAVEL & RIP
Cl) m No SCALE NO SCALE (DETAIL 30.12) GR-2
U N
0
a Location; PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN DESIGN ASSOCIATES P.A. Owner: Approved: Date of Issue: of 3 Sheet
J

~ _ k
f _..~T Dewatering
Weir koglh aaddepth--Keep Ux spillway weirat kast4 fl long aztd seed to
Emergency spillway pass the peat d~gc of the l0•yr swrm (Figure 6.fi0a?. A maximwa flow Pi a Outlet t Fl _ Pipe Outlet to Well~letin at 1 fk a mioimwn tleeboerd o[ o.s R and maximum side slopes of 2:l P o at Area ed ~ NoWell-defined Channel Channel Vell~letined ConcreteWock j eel - 's:
Riser pipe fa principal are raammaded. weir lxrlgth may be sekxtcd fiam Table 6b0a slmvn ra Excavated area {as required) ~ C ~
spillway I most 51m kx~tioas m Notil1 CaraliTra. _ Fr board • 1' min ~ Side slope 2.1 + - I ~ ~ '
Trash rack ,.r~, ~ Tablebb0a , ado A _ A _ ~ ^,_•r..,~ _1111(_..-, f Accumulale0 ~ 0. ~ ~
T • DeslynofSpltlvrdys DralnagaAna waklonpth aau pq A _ _ 4-1 p, sedimeN U N A ~ • - ~ ~ 1 ~ ~ ~ 111-= ~I• ro
~ f I Embankment steb+lized ( ) 4.o do A - II , _ 4 i _ _ z s.o i? w ro rt' - t'~ weepholes~'1!'= = ---c ~{Ilr_,,,,.
Drainage holes »W _ I- ! I _ vnlh vegetation s s.o with gravel I I II - t I ( 4 ,o.o Excavated depth, ~ { r fa Gravel-supported by (/1 is rf , h O _ min 1 • -man 2' ~1" dewatedn9 ! "I~11 II ~ hardware cbth to allow ~ iy N G
~ 2.5:1 slope ma s ,20 Plan ~ ~ t>abw top of inlet ~i11 : t ^ drainage and restrict ~ ~ ~ k
IDimalsiont shown are minimum Pfau r rl _ sedimontmovement. °U ~
_ - 1sT Anti•seep ~ Anti- tl =illff collar 1 U ~ ~ ~ ~ G
Selected tilt Flotation Principal Stabilized placed in layers _ 2:1 slo Tavel filter ~ U ~ ~,g 0
block and tom acted spi~IwaY Cut-0tt trench, outlet !~~l p 5h ...i7. Ul° Ili_ L,
barrel 2' deep ~ min ~ y - ' ~IH . v, v~o
1.5 K c~y~ ~ ~Flter 1800 cu Rf acre ~ blanket ' flow ~ ~ Flow U ~ ~ Temporary sediment ~I r; y~~ ~ ~ O
~ ?•7 5 ft :a max ~I 1 1° _ Wire screen Dewatering ~ : ~ , o ~ _ a Pool ~ . ~ a i ~ .,1~//~
Notes ~ Section AA t 'ahl~
1. la is the length of the riprap Fit, Filter ~ ' • ~/i ~
Cross section Fdwr fabnc apron. 61a blanket 2' max r.. ~ 0.
2. d • 1.5 times the maximum stone diameter but not less ~p~ ~ • ~ \ ~ II ~i ~ to
Design 2,• aenin a• than 6". _ - Yrti~ 'i'+ Oropinlet J~~j \ Flow
ran t(t« ssalemant 3, In swell-defined channel ex- with grate / Sediment Flow ~ v
~~I tend the apron up the channel u~lj(I~lut d banks to an elevation of 6" Npun 6.52e &otk and gravel drop Ne[ pmbcten.
tit Ise a above the maximumtailwater , •s ~ 2:, lids Temporary sediment pool ire mesh
~ I ~ max E`"'r d th ato the t of the beetle s a a ~ptra°,b,,, ~ h ver is less. tnax ~ Haar w C e (optional) ~ N
„ t t•.t stile slope ~ senled rap la0rie - max Hvara< d dam 4. A filter blanket or filter fabric 1' min 2.1 slope 3:1 slope 1.....1
gaand should be installed between art the riprap and soN loundation. 2' max ^ - t, ~ N ~ O
min I !1 dam " IY') Fine gravel ~I (h. _ r,0.,
Stone S8CtI0rl face p' min(II~ 3• X11 I; ~,a ~
n r I n Site leer b and stri 'I hen areas wider the em- p°"" Fen'p°"'' ?aP. Construction 1. Etlswe 1hM ilia subgredo fa the filter and ripmp follower the required lints CO St UCt 0 1. pteporalrals-C , gm , p ttpsa sad glades shown in the Com tan fill ' 1 li ii ~ ~ o thickness) stone 1--• O the req,wed,ines ~ O
S ecifi lion ~"~°'tmr'ran,~gaati°n,n°°a,v'°°m"an;~;°'~ae~°au«iat• Specrftcattons Pte. pat r rc~alrcdmt~stibgradetDt~ p ~ S To facilitate sediarrs ckmlotrtand rtstaation, char the pool area of all brtah, Con$tfuetion L Char, gnf1, and step the arts under the embankment oleo vegetation and density at the surrouMilg mldsturbed rnaterid. Low aloes in den subgrade on ere sahgnae b dte ~ O ndsesubgradeon Flgw.fi.s2bGrawtdropidav~~~t9r+~~1. ~}esignCriteria Limitdledainagearcatolacn;.xecptheminimamdeplhutrtandthtmax- ~ w
flees, and tiller objectioaahb materials. Stottpik atl topsoil a soil coetaiaing root mu Remove all surface soil tbomining high amounts at i>tganic metier undisturbed sal? may also be filled by inaeasitrg the ripgp thieimesa. ilcb~e, Iowa dcptM1 of 2 ft u meuured from the acs; of the iota suucturo. E ~ ~ [t
rarauetfauseoatbtoutersMltoftheembarlkmtnttofatilitateve Specifigtions ~ a~ ilk ~pk~~mtbe rlrgan gets' e ~ ProPer7• 1~ The ri and P cn ( Ted grading limits Maintain side sbpes around drc exawtiat no staPer tkan 2:1. r-1
rive asrablishatw. Place temporory seilarreritealltrol mason be:ow the basin ~ shower m file grml like ratio txmform m ilia specified gtadiog limits P~• as necdPb 1 Enswe that fin material~athe anbriluncnt is fie of rooa,woody vegeta- ~-i L Z N dse minimum wltuoe of ranvatrA area around d,e drop inlet a ap• ~ .a..+ e
l. Filter chxh, wtlen usul, roust mot deli ConstrUCtl4n Lay one bock on cart side of the swcturo on its side io the bottom row a ~ C L teodbepropedy drat ~ slautdbeexwvaeduteasdirchesbelow prosimalety35ydslacredtstttcbed. a O
L Cut-0ffDaath-Excavate a cut-0ff trench along the cauerline of the tarlh lion. aganic mal~r, and otrt objaYibrubk mafaial. Plan the fill in lips not gn mprireatetlle and be prapedy fill embankioenl Cm the trench w stable soil nlrerial, but in ro ale makd a w exceed 9 ladies and madlille cumlQta it ()ver fill the embankment 6;rches P tfO1q Fen~B a tearing drrulg ilat;dlaliO4 Repair any damage by iranydamageby SPBCIft;,atlonS illOM'p°0t ~ ~,,,~btacts ' stlbeed or ~ drecrestafd,e dram. d,ebouom agem ge
Ica than2ftdeep.Thecut-0tTtrertchmusteamtdiumbodtabaarteatsroatleau wallow fasettlanaa. Ong ~ dPmP ~P~Ng r?~utfiLaeloth owrslte damaged area. All corwecung joints shtwld avalap a mirlimtm of 1 fl if the damage is Ile ebvatioa at the rise west. Mate ilia miairoom 6otsorrl width wide etttxlgk owrdte damegcd the stoml dreintalataalsuppatand mavddwashoutswt~ o.atbw coats Shapethetmsin mfdsitecorsditions.wrtA theksngestdimensionaienrcd rowed N L If the damage is !f ntxxicd laWal su b su cent rows i 2 x 4 wood suds dw longest inflow am m provide maximum trap efGciaxy. O t . _ N
w permitoperationO(exavatioa~adcampacuaneglrpmmtbW mroaaeboa J. Cars>nct ilw outlet snctiotl io the enlbankmatl Protect the connection be• extensive;, repLx theerirc fdtercblh. ~ PPS ~q M d~ ~ - ~ b~~gs• ~ U ~ o lastatl provisions [adnining d,e temporary pout to improve trapping efficicn• O O Q
ilean 2 iL Make side sbpa of the trench ao stoeper ttlen t:1. Campaaion rc- tweenlhetiprapandlhesoilfrompipulgby taingfiltafabricarakcywaycmotf eprirernerilf ere ilea same a those to the arsbanhrlenl Keep die trdlch dry torch berwoen the ripap sauctrue and the soil. 4• ~P "roY ~ P~ by WuIP~. bw fate cane wavoiddatnaging the fd• Idaroagmgthetd• 2. Carefully fuhaMwareclothacaoparabkwire,rahwid,112-irrehoprsr- gfasmallstormsandbav0,dprabkmsfromsundagweerafltrheavyruns. ~ ~
during backfilling and campaclioe operatioea, Place the filter fabric betwea the ttPaP and soil Fstetd the fabric across ter. toga overall block openings a hDtd grovel in place. p ~
. Fmbaukmeut-Tara fill autaial fiom ilia wren atwwu oo ilea ~ ~"'Y to'mdatioa awl side a the top o[ Urc dam; a S. The minimum thiclmesr of o,a ripnpshouW De 13 times drc maximum swna ofelldcbrisrhatmi hindcranvationanddispasalofspoiL W ~ emuimunsaa -i iadiatrldet axd2iachcsbebwdrea COnStfUCGOn 1 (~oardu7uea g~ ~ ~ ~ ~ 3. uscckangrnYCt,3w-btn reh P
J exgvatea keywry trtxlclt along the oeotaline a<the spillway foundation dianrettr. phuls. Tt should be dears miotlal soil. fro e><roots, wDOdy vegeratian, rod~t, extrrding up the sides b the height of the dam. The trcach should be al of tho block a a 2:1 alape a f>7ua and soaot6 it m an ever grade. DUT g5T Spec;}If;,atlt)n5 if ~ t71 C
and other ubjeetiorobb tmlaial. Scrify areas a which fiR is w be plxcd befarc pleriag fill, The ffll material muse cosltia sufficitM moiatrae m u an lwl2 adap and 2 ft wide with l:t side slopes. ~ Riprap may be fiehl stone arough cplazry SWne, It should be hard, angular. washed shoe u aecaornraaed. i. trade the approach b tk Iola un amly. W , _ C1't be hard, angular. 4. If col slate and tales veL ~ y grave ere weed, tap the sbpe mwud the iota oO suepa 1. Protau wap by gn Q_
be fomtod by hard lino a hall wiillallcnlmbling. t(wata Carr besgoaudout 1. Clearthepondrabebw dledwatiotrof dleetieslgf6lespillway wtaclTimle 1tMY waffler-rcaisraotand weU graded tlwt 3:1. Leave a roiaimum I-ft wide level stone area txxween dle sorocwre and
of ilia balk's is too wet fa proper amlpaction. Plax fill material is 6 w >4inch sediment cleaaow. 7. Cotlstrtrct ilia apron oa zero grade with ro ovexfaD r the cad Make the tap casitutaa la)aaovatheentiroknstbofdeefiprrarldthwcmloactilCom• of the ripgp r the downrraro end k;vel wide the rexivipg rn a slightly around dte told b prevea gravel Gar auaing idles, t';~t the slope bTVUd tee 4. Who dse ooatnbu6ng dnirage area has beam pcmarrerrdy sabilired, stet ad. Make tht tap into, eae alma 3 inches is diameter a Iuger. Ort the slope axay fiorO the mkt weep fides, fdl de lwsinn widt stable soil m final grading elevaliorus, coapaC it
prction may be obniiledby mating rkoousanctioahrdingequfpnseatava the S. All cut and fJl alopu should be 2:1 a 0atrr. bdow it g era a slightly rase !/1.314-irrlt gravol (IVCIXri' A57 washed stare) a a minuoum dlickaesa propcrty, and subr~im.
fill ro that d1e entire sltrtace e>f arch layer a tawrrsed by a< toast sae wheel a (read tract exf the buoy equipmoot,or a eanpactar may be treed. Gmstrlict the C Fasure tint the ataoe (drainage) section of rho emherdoilers hat a minimum of 1 f<
anbaoknaentpaeelevaoem l0%higha dMO the design height w allow to sex botram width d 3 fl and maximum sidZ sbpes of 1:1 this exktd w ilea bosom R Eessuro the the apron k properly aligned wide the receiving atrnm and prefetaWy straight draughout us kngill ff a wtvd is needed w Cs sine coodi- wing stream and I f l Maintenance Iasptct,don,andpmpalytnainuinraeexavxedbasinafrueveaystotmwnrT b rtsNecoodr• Mantenance laspectthebertiatthereadtniaandnakerepairsasooeded, theoontn'buriagdrvnagcarcahubeenpanrmsendystabr~'zed.7optvvidesaus•
ref the spillway section. . Boat, place it is the tipper saline e><the spoon. rcmwa sediaat when the volume of the basin has lxoory bona effiaeacy, H
s. Conduit spJlways--Socmety attadt ilia rise w dte twrtd.a bml swb a 7. Construct dte minimum firoshed stDOe spillway bottom w;dds, n shmm on 9. tmamdiatet y afkr exmstrugion, stabilise au tfuTUrbM area wish vegetation Retravo sediae+rt as rroussary b provide adequatestorage vdtrme fasub- been reduced byone-loll. Spread ill slanted autvial evenly ova dte sm• e with vegetation segttertttaim, n2lroding tend area a stoctcpr'k and ttabdlba it appropriately.
make a watalight strlctunl epnnecllot 5a1oe s0 eaoroixtioro betweat barrel the plans. xd11:1 Yde slopes extadelg w d1e top of the over filled I'J46ant• saxialanyappmYeawn«,iglteaasemaixs.Plaoe~ebtrret am riaeranaonn, mcnL Kapthe dtickness of dte sides of dte api8wayotMktstntctiue tier tutee- ~ts~~•!0. r~a~norysudat.ara~Il.PnanadrlSadiag), ediag),
smash tauadation e>< imperriar stall, Ib sot we pervious Irmaiai such a mwn of Zl itlcha.Tkweir moat helevdandtslesstractedtograt4to assttn When dte mrwibating drain;rge era has boat adegttatdy stabilised, reaovea9 ataieriels and ay rrtsgbk set, and either salvrge a dispose of it property.
mil, gmrel, a crashed afoot: as bactfill arard the pope a amistxp ewllara dedgn npaciry. Maintenance Inspect ripTap owlet strsa:mres after ha rains to see id Place ilia fig auterial around des pipe spillway ie ~-mch layers and camprx it vY arty eraioa raved err below ilia riprap has taken place a itstorsat love been dislodged. Immodialely traionarourdor &mg IbO disttubed area b Prow grade, Thar smooth mad ContpeU LL Ap• ged.lmmodiarely
older and aroud the pipe 10 a<{alt d1e nme density a the agpoerlt etobant• A Matrriat used in the stone stdioe should be swell-graded mixuirc of stone makaU flooded repairs w pn:vau Gmher marl Can meet bt takes trM to rake the pipe from Ih eooelad rich iL xid1: des aide at9 iocha (clan 8 exosioa coarol saooe k recorwt~ntled)red ProP~1 ttuhdiae all hate flame crated eta Iola. r ,
6wodatioo when eoupactia` auTder flee pipe a maximum rtarc sine of N iocbes. The slOae rosy ba enachiae planed and ilea ~ Mr..y 1t+~~1 • s 1~ . ~ H
. smaller states wtxked into the voids o[ the larger storlea Th retie shadd bs . Placumwramd~pdtafzRaft~ha~~p~apilt.~ hrd.aogn>ar.aodb~dYt~~. RIP -RAP OUTFACE PROTECTION Nc RAVEL INLET PROTECTION= EXCAVATED DROP INLET PROTECTION ~--,~y BLOCK AND G , No• may, STD. No. RE
DtfO1ECJOSS1IK1twi1DW11Sttta7innOquipmGgLA0C1~tItO~MpYOIbrGOF ~ ~ . STD. N0. REY. ~ W • ~
r~taaaner>~naymw,aoopKVrntaot~..I.nor~rattoatd~epipe 9.E~d~tl~aor~spigwayt>~~tiat~aaamwrt~rcampaatutt:toc {NO SCALE 20.5 } caodait 6e bailled by wtiog a trail thraugk dr dam Itper the embarrtairr of der embankment aril stable wrldilio°s are reached andoutlet vetQcay is ac• 30.04 20.55 No SCAL]<) 30.08 No SCALE ~ Q
uexttaplde. txptabbfadterettivitigstram.KeepUletdgaofdlestoneauilersdaiondosh w
. wish the sarowding grounded shape ilia Cana' w exlafitle tk outflow weam s. Emerg~Ly apinw,r--tnmau thx an«~nry apirway in trdiaurrbre wit. (R~ fn~r: t~arrn rroucr~on). A
.Ibeachierrmlentofp~uwdeJevatiaaa,glade YAPoABLE AS OIHECIED BY THE ENGINEER z STEEL POST STEEL POST A 1.5'
alit e;hratel sbpa ate rrsical tD den suotxssGd ope~tan of ~ aaergexy 10. Dvect erMxgercy bypaP a tlaroral, subltp areal, Laealte by~sa Dealer so (b• spiuway. tbu Hues will as damsgt thL embankmal min 1--1
lnk°s-Disr;~arge wWa info der: rasa in s nrroer oo prerat traman.. use It. stabilize d,~ anbaatn,ent aod,ll eisnrrbra arcaa aooYC mo sodimerc pod Fq,TER FADRIC i flLTER FABRC ~ Q•, Z ~WW min W
el;YeraiotawilhtluilaprDtai~oDmaTa~imanaadt.watuwu~aPP~«d aRddDtim~rramrranlrxtayimra~tyat't~lioo(R~natr~:sar~ C F U s~ r~
of the pod arei w improve basilt trap dficiency (Refueax'er: Raao~Colwd fee Srabitisatarl). Mova+ FxrfR fAaRIC AtcwnedandOMletrl°r~C i0a). ~ ~ OY• < b 9~ _ I~ _ b b ~ to 'n n E~~ Fillet 0
IL Show il1e elislailcc Ge®l the pP d the y{ullwtry D d1e sodimeat ckatlaa " fabric ~1
7. Erosial control-tmslruu the atrtxxute so that tAe disturbed stn is mini- I~vd (ox.half the iksign deptA)aa tGc plea and met it in ilia field, rnized. Dirert surfaex weer away 6Dm bare erne Coroptaa the errlbriltmeta - - - - V ` r
the ill embarrktrlent rd ° d I ~ I - bdare tk~ra k ckatod. Stabduc emergency ap way A ~ tr`
au atherdattubM areas above dx rya of eke principal ap;vway iromediately Maintenance lnapal temporary sedimas traps aPour rack period d aignificanl raalfaR. 3 _ aftaaorestnictiao(Refenacer:SarfoceStdiifi:mioH). Ranoveseriurkntandrrstaerhetrapspitaaigioa[dirnraosidawlltsthesedi- b b l I ~ ANCtxxt SgRT d IxMNUM At1CH01t SIORi 6 YNAItY ~ V l T Class A a B W
mss has acemllulared to rwo-haH the designdepth of ttretrap. Plm the seidi- I r n iv N trcu a BVRYrtvO sxnrr, ~ oti ~ Erosbn Control
a saray-s«limentbasiramayallr~tohi~ralaaacan dar~uatn.Avo;d morlt d,att k r~no~«t ;4 t~ agitated a=poaal area ad npta~ t>x - it wlltaminaedpanotdlegnvetfadrlg. »ttp yids sbpa, smd route and tnMt ba+ios with wammg ragas traxpawag To uAV us _ Stone +5 WASHED S NE BE ED OMEN 1kxWDOWN, t. FNJER BAAPoERS SHALL BE NSPECrED BY Try FCWIGALiT
l6Weely.!?rrllowall~tteladkxalregtrremeeila ~r g~,J1II1j~; I. FlL1EA F/~BfaC FENCE SIiALL tiE A MtNaIUM a 32' W w10'IH AND Chak olio slna:tttw fa thmage Fran d'OaiOn a piping, PeiudicaUy tiledt 1110 5ttAll tuvE A FuNNeNr OF 8 LINE N1RE5 WITH tY STAY SPACING. RESPONSIBLE PARIY OR NS AHEM aarETweTELY AFTER EACH Filter ? Y 24"max W,tB'ALL AND Ai LEAST DARY DURING PROLONGED twNFUI. fabric atcenteT
. rtepthoftAospillwaywaawedkamiromumofiSftbdowthebwpoiatof 2. MVVEN nITER FABRC f1E USEO'NNERE SaT FENCE {5 Ta RELWN ANY REPARtS NEEDED SriAll 1aE NADf a1NEDNTELY.
Maintenance ch~taemn~ntm::aarFapai~axars;gl~fr~antntndr.Rxmorca~atrld thegabyntalenllmroodutclyftilanyatnkmallattheaa?nttoslight• FOR A PEFJOD OF YORE 1FWr 30 DAYS. mygrotM1eb,asamyauiginaldinratsiootwhensedmKntacauaulaleswoao- 1y above datigtl g~adn, Ao! riprap displaced 6'oaa the splYsvay dust he 3. STE>:l PDSTS sFwt BE 5'-rf tN HEIptT ANO BE of tNE 2. SHOULD THE FABRIC DECOLtPOSE OR BECOtE arFFFECTIVE PRIOR TO THE END OF ]e~ DIPECTED USABLE UFE AND n,E BARRIER STILL b trFLESSARY, THE
halfthedeaigndepol. nptaoediroalydiately. 5E1F-fASTENER ANGLE STEEL TYPE. 4. WORD POSTS SMAtI. BE 6 10 7 FEET IN FIEtGHr ANO 3 TD 4 FAeRx: sHAU az REPrACED PROUPnY. Section A•A 3. SfOarErtT DEPOSITS SH01AD BE REHWCD AFTER EACH STORtr LVENT OR SILT
WCIaS at DIALIETER. WIRE FABPoC SHAH 9E FAS1fNEl1 TO f~ILILdICanb711kmd1lapolwaya,bldOYtlClfaa0510ndamagC.afdmSP~ AfkrallsEdtlREat•ptOdUCatgart~havEbGL71l~a~Y~b~•~~ WWOEN rbST a1TH NOT tFSS 1WW ~9 TARE SFAPIES I-1/7 LAIC. FENCE SFIOUID aE REPtM.ED, THEY MUST BE REIf0YE0 M'F~N DU'OSRS Rr/,al APPRDx. FIMF THE r,DCr,T OF THE BARRIER. ANr SEDIrAEM tlE?OSfrS REYNMNC N
file embelltraat irx piping std aeelomr;ol Maim atl rlooaeary rcpain ten- the atrlicuirt and all tuaubk setiirlTeet. Smooth d1e tun w blend wpb the ad- rocdia<e . Rerxwre atl troth sad txha debris fiDm the tisaaad pool area. ~nia' area and sabilin t~jrratas: ste?foca sr°brU:at°a). s. IWISFi~ srAOMCEnFT~TO A~c~ttAtWN1EL~, cRE~Dt ~ o o~ Sa,T FENCE PIACE AFlER THE S0.T FENCE >S RE4WE0 SHAM Bf DRESSED t0 COtIFORM Sea,eOtwrkdarn--StawahouldEapmc~dawrYraci,rrrlathrrkatotwpwarrtomaainaaraadhdrn. 7D 7HE EIOSTarG CRABE: PREPARED AND SEEOEED.
b I mg I>~Y 6. TURN SaT FENCE UP AOPE AT fNOS.
- 7. (MIEN FABRIC IS USED 'MIN WWE tIEST1 e' CENTERED POSTS NAY ~ USE. L • The distance such that points
TEMPORARY RISER BASIN TEMPORARY FILTER BASIN STD. NO. REV. STD. NO, REV. TEMPORARY SILT FENCE R A and B are f>3 aqua( elevation STD. N0. EV _ `kkkknntrrturrrr
f~iQ SCALE 30.01 (NO SCALE} 30.02 (tJO SCALE) 30.06 A B r,,,
( } \ I , ~ ~ L P . ,5 _ °P
y?
canpacted sail 2'
.min rl 2' min top ~ `I I' r 0 'd ~ Construction i. Place shoo b 00 liaw and tbareaboru shown in the plea ou a idea fabric • • •
~ ~ Fes"' Oy 6• Ir+reboard »r 'i:,,.:;~. Steep t~ foutdaliort rrrr4rrr r u ntttts~ too, Spea6caGons
4' TMCK 3000 p9t CONCRETE LID w/ TxT, 10-10 WWM . is trlin 4.--~ atig ~ti~iu ~ - ~ •.a .I: :I`. i :i•1 + sbpe -II-IIt- _ =1 - Q,° m;,t 2 Keep Ilse enter slDne sectbn a kwx 9 inches tebw ,taturil ground keel
~ =Hill II ~ I ~ ~ s I ill I! III ~ _ it ~ I l II 1=1 _ Il=1i I - ~ I ~ I~ III ~ I 2:1 sbpe whGe~ediaiabu"~61~"e'~'' REVISIONS BY
c 3'-0' x 6' OPENINGS TYP. ALL 4 SIDES e' typbat a hatter 0 ~ P° ~ ~ J. Extend shoo N Mast 13 ft btyood the each floats (Figure fi.lCtb) b leap
~ - , ~,v` ovaibw weer 6aa aoddcming the dam as a re alaaa the charmel
~ ----x~t----x x - Q D FTNiSI't GRADE $"min ~ ~ 4, Sa bawcm dams to ensue duo Ure ekvapon a de tdp of the bwtr ~8
N / 3<~ I 2 3" 1ti dam it dte same es IhC toe elevation of rtte upper dam. 0
~ ` \ ~ \ coarseaggregate ~ ~vv S. proteadsadwlneldo,uosi<eaeatromtLek>w<atcbeckdmrr.oorrsidtringtha
O ~ A wale will now Ora and around the dam (practloe SAI, Owrftr Statiinariot Sv,rnvc).
M 8" SOLID MASONARY Constnletion L Resnate and of alt brudl aam rd other De• Rap'es' uxa ~ 1a- Construction 1. Remora arid properly of au taq, brus0. a other objx- o b o SpeCIflCatlOnS SpeelficatlonS datable ewaial. Fm and compact erg elitchq, swain, a gullia Iliac veto be her objec-
Iawill be - f. Mate f~ tlta the Cheoad each above dte toatapsgtzra don is stable.
b 2. Elmira that crasaod q ttatrra[ gromd brel a above. a dteatuumuatt'otatructMiaouserxaon measalldesigo requiro. N d alenlt. COnSGvctlon 1. t~atr ma earratoe mad exit era of erg YegaauaO, tools, and cellar objoc• a 7. Finere eta ekanlel appttnernrras, such u advert etrDauces bebw dock
VARIES z Itat bef'ae plaoaltent of rn, the bar d the ridge should be elklred by 3 s. EtaurelhaldletopaflAedllceisrFOtlow~raunypoiattmntltetl~;gn~~t ma~hinay. dieted by tlCatlOnS tbaabk tt>aa~ ~ ~°P°`y ~'d6 h' dons, ere not wbjeq m damage a Mordcege from disptttcal >a~. Spec!
~ lion phis Iho spocilkd aatkenent rd 2. Ptaoe dte gravel m the specific grade and dimentions shoTra m the p4na, and
,aeape, sualizctheeh'vusionwline,gnde,andciDSSSarion, ' • PARGE All. INSIDE WALLS ~ D a a Provide sufficiem room ammo diversieas w permit tlLdiine rc and as t0ao°°° m ilia deg" plea sssarion smoahil Maintenance 3nspatdbdcdaursardchaonetafrndamageaRaarhnrafftYat.
~ WITH 1:3 Ct:k1ENT/SAND l s`ad1Og d. Compact rba ridge m m 12" 3/8 MIN. THICIWESS P and w prtnide sub;luy e sutTi!' ~ 3. Providedrainege b wry water b a sedi,omt tr>gs a dha stsitabb alma Anticipate sublttetgenco and depoaitioa above the check don aodaasiao from ~ NghnuwsaaadU,eedgaofdredma.caroctanaaD,agtinrtlediattty.ltsig- Date: 12 09 03
3 typ. x Vegemte the ridge imm~srJy otter e!orratroaian, unrea i1 will remain ;n nificaal erosim coats 6etvsaa derma. instal! a protective tiptop liver ®tha 4. Use geatextik fabric lrecanse they improve stability of the [oulalatim in
. , a place less drat 3o waking days, x vegeatively stabilise ilea 6versioa afkr i!a ieauuria, peniaoOl the chartncl (Practice 63l,Riprup-6ardadPasrdt7saa+rrfs)'. locaiau evDjat m seepage a,higb was taNa. p_ ~
~ ' x 8' Q • z, x--x--~--x z z. Scale: ~ -~00 Hor. Ranove sadinal acaaaulaed behind the dams ae,aeedett m preven damage N~A
z Maintenance l leer eupad t>orary~antxaw~trardan«r:t«yraiatall.u>rr1~. Maintenance IasportpemwlseotdiversigaatlrreveryminFallauingtheponstrlactioo ~ ly remove sediment from the lbw era red rgair die divasial ridge. Careful- flea hmtediatdy remove any ohatrtictioes barn dte flow area and repair d1e ioD opm. Maintenance Mauuaia Ilse grave pad is a taaditiar b prevent mud a sediroenl iron Iav- achrurl vegetation, ilbw Ike charwrel b dean thnw;h the sane chotlc don, • ~ ing the mTSattction sire. Ibis Guy require periodic topdtesaiag xith 2•inch and pEeveat lazge Mows flan tarrying seditnast axe the dam. Add sttxres b Drawn: ,J MY
~ Iycnx~towlcLtammateumctyt~eirsasaroded.whendreaaapr~rectoais a+~•~odcondr;taaoamatemnayrr~,aneeded.Mainniollr tintaiO ~ stare. Attrreach rain(all, iDSpoctaoy strucDue,,tLtxd b top sedimea mad cle~arn damn as needed m ataiouio daiga keight and cress satiaa Checked: 0 ~M
.J ww.. wr...~ w....- / n__n An An u.u. w..men~.dl. a.l.:l r.wi ...........I...:A... ..A .fr ,.1......1 IJ~A ..:.V aT:tatraa laanemnus. hrsllhV MO[tilite al sll.:m.. Y rant fe ItYY_Q49rY_ Tmv,edmdY fennYE ill DbItCUDa1bIE rllatYlil! aDllbd,
w a 4vnL11tlt DAZ~t W1 GXC, ]%--IV nma , .._M..,......... .,b,,....,, --.F..,- - mural gmu d kvcl and appWn&Wy stabilizes. wmh4 ormv*W oampubic roWwaya Job: 03-07-06
0 r
0 M O Sheet
YARD AREA DROP INLET TEMPORARY DIVERSION SWALE TOP OF SLOPE BERM STD. NO. REV. STABALIZED CONSTRUCTION ENTRANCE SM. NO. R TEMPORARY ROCK CHECK DAM STD. No. REV. EV. GR-3
STD. No. REV. ISM. NO. REV. STD. N 30.11 NO SCALE) 120.601 -j I F DESIGN ASSOCIATES, P.A. Owner: Approved: Date of Issue: of 3 Sheets
NO SCALE 20.5+ (NO SCALE) 20.57 (NO SCALE) 30.05 0 20.50 NA SCALE
a`.
Location: PR-20 PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN ti
U

CONSTRUCTION SPECIFICATIONS
~ TRASH RACK 1. Site preparations -Clear, grub and strip topsoil from areas under the y
1~ ~ ~4 REBAR - embankment to remove trees, vegetation, roots and other objectionable > material. To facilitate sediment cleanout and restoration, clear the pool area of ap
TOP OF RISER all brush trees, and other objectionable materials. Stockpile all topsoil or soil ~ + Q ~ f ~ ~
I I containing organic matter for use on the outer shell of the embankment to facilitate ve etative establishment. ~ ~ ~ 9 + 0.-~
I
- r n h - Excavate a cut-off trench alon the centerline of the earth fill oa ~ 2. Cut off t e c g ~t~,., ~ TRASH RACK embankment. Cut the trench to stable soil material, but in no case make it less
PERMANENT PRE-CAST CONCRETE DROP BOX TRASHIERAf TOP VIEW f g4 REBAR t least ` w ~ ~ TRASH RACK than 2 ft. deep. The cut-off trench must extend into both abutments to a V1
TO BE ANCHORED IN CONCRETE TO PREVENT FLOATATION. SEE CHART FOR SIZES. the elevation of the riser crest. Make the minimum bottom width wide enough 'y N 0
~ TOP OF F ToP of RISER "H" PRE-cnsr coNCRETE eax to permit operation of excavation and compaction equipment but in no case less ~ ^ ~ K I ro BE PEacED AFTER coNSTRUCTION. than 2 ft. Make side slopes of the trench no steeper than 1:1. Compaction ~ .U
MAXIMUM SEDIMENT STORAGE LEVEL ~ ~ DRAW DOWN ORIFICE TO BE TO BE FLOATARION CONC. TO PREVENT q I I re uirements are the same as those for the embankment. Keep the trench dry a„~
6 BELOW DRAW DOWN IFlC IN AKE q5 WASHED STONE FILTER COVER PLACED IN RISER AT A 45' OVER DRAIN PIPE, 12` MIN. THICKNESS ANGLE FROM NORMAL POOL r A as during backfilling and compaction operations. ~ ~ 1L POOL ~ O ~
q5 WASHED STONE FILTER COVER ~ ELEU. TD INTAKE 1' BELOW OVER DRAIN TILE, 18' MIN. THICKNESS ~ NORMAL POOL ELEVATION. 'BELOW _ r WOOd O U z varioN. I 3. Embankment All fill material should be clean mineral soil, free of oats, y ~ , PERMANENT PRE-CAST CONCRETE DROP BOx
20 ~ TD BE ANCHORED tN CONCRETE TO PREVENT vegetation, rocks, and ocher objectionable material Scarify areas on which fill 'a v ~ I FLOATATION. sEE cHARr FoR sizES. is to be placed before placing fill. The fill material must contain sufficient ~ ~ ~ ~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ~ I Z 0 0 0 0 ~ ~ 12" I I moisture so it can be formed by hand into a ball without crumbling. If water ~ ~
12 I can be squeezed out of the ball, it Is too wet for proper compaction. Place fill ~ ~ O
0 0000000000000000000000 0 ~ ~I BARREL ~ 0000 I~ 0 0 I I BoTTaM DRAIN vAEVE sTEM material in 6 to 8-inch continuous layers over the entire length of the fill area 3 0 t~ I suPPaRr BRACKETS As REO'D. and then compact it. Compaction may be obtained by routing the construction 0 y
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1~ 0 0 000 ~ 000 haulm e ui ment over the fill so that the entire surface of each layer is Mai p ~ ~ 1 1 9 q P
f Q / U = I traversed by at least one wheel or tread track of the heavy equipment, or a ~ U
f ~ i ~ I' ' ~ 20 LF "K° DIA. PERFORATED DRAiN PIPE w W I I compactor may be used. Construct the embankment to an elevation 10% G.
A GROUT BOTTOM DRAIN I I higher than the design height to allow for settling. Subgrade and fill to be verified )RAIN ~ and tested by Geotechnica Engineer. ~ r DE A
20 LF "K" DIA. PERFORATED DRAIN PIPE ~ ~ - 36" MIN. AS RE4'D TO PROVIDE A CONCRETE ANTI-FLOTATION BLOCK WATER TIGHT CONNECTION. ~oN. ~ BARREL I II) 4. Conduit spillways -All conduit materials shall be as called for on the plans
SEE CHART FOR SIZING & VOLUME. T ~ I~ Schedule 40 PVC ma be used for sizes < 12 diameter).
SEC /0 A CONSTRUC110N NO --J ( Y vATE - Securely attach the riser to the barrel or barrel stub to make a
P RMANENT BARRE DROP BOX WITH ovER-EZCnvATE CONTRACTOR TO INSTALL E L, ANTI-FLOTATION, DRAW DOWN ORIFlCE, TRASH RACK AND EMERGENCY T' DEEP FOR -oR j `~:I watertight structural connection. Secure all connections between barrel ~cE INSERT PERMANENT RcP BARREL sections by approved watertight assemblies. Place the barrel and riser on a
RT OF THE TEMPORARY SEDIMENT CONTROL STRUCTURES. slLr srDRACE SPILLWAY AS PA _ ~ I INTO PRE-cASr coNCRErE RISER. rvious soil. Do not use ervious material such C~ N INVERT IN of BARREL = BorroM of POND firm, smooth foundation of impe p
INSTALL PERFORATED DRAIN PIPE AND STONE FlLTER. ONCE ALL •K' Pvc BOTTOM DRAIN WITH DISTURBED AREAS HAVE BEEN STABILIZED, CONTRACTOR SHALL REMOVE 'K° GATE vALVE ~ sHUr-OFF BOTTOM DRAW W1TN h stone as backfill around the i e or anti-see ~ as sand, gravel, or crus ed P P P ~..1 vALVE ~ sHUr-OFF collars. Place the fill material around the pipe spillway in 4-inch layers and I--•-i
ALL SEDIMENT AND DRAIN PIPE FROM BASIN AND INSTALL PERMANENT CONCRETE ANTI-FLOTATION BLOCK SEE CHART FOR SIZING & VOLUME. Compact It under and around the pipe to at least the same density as the N
BOTTOM DRAIN WITH GATE VALVE AND HAND WHEEL ASSEMBLY. ad'acent embankment. Care must be taken not to raise the pipe from firm ^ ~ ~ MI contact with its foundation when compacting under the pipe haunches.
1~ ~ 1--/ N ~
NOT TO SCALE n'm m de th of 2 ft. of hand-cam acted backfill over the i e Place a ml l u p P P P
NOT TO SCALE ~ spillway before crossing it with construction equipment. Anchor the riser in r ~ In ~ r place by concrete or other satisfactory means to prevent flotation. In no case ~
should the pipe conduit be installed by cutting a trench through the dam after ~ +i L;7
DESIGN DATA SUI 0 oM o on :SIGN DATA SUMMARY PGND 1 ~ ~ oM o on lev, the embankment is complete.
'B' Normal Pool Elegy 696.00 s Z N ~rroal Pool Elevation
/4 'C' Top of Rlser M~ATJ~ 'D' Splllwny Invert ~ of Riser 700.10 5. Emergency spillway -Install the emergency spillway in undisturbed soil. The p achievement of planned elevations, grade, design width, and entrance and exit a ~ d- ~Illwny Invert Elev. 706.00
~Ow Spillway Wldth [I >Illwa Width [feet] 10' channel slopes are critical to the successful operation of the emergency ~ ~ (
'E' Top of BerM ElE 'F' Barrel Length [ of BerM Elevation 708.00 spillway. N 'p 80' ~ s . _ N ~rrel Length [feet]
'G' Barrel Size [Intl Inches] 18' RCP 6. Inlets -Discharge water into the basin in a manner to prevent erosion. Use ~ ~ 0 ~ ~rrel SIZe [ ~ ~ I rotection to divert sediment-laden water to the u er ~ p t0
'H' Drop Box Slze [ I Draw Down r I •op Box Slze [feet] 2x3 x12.10 diversions with out et p PP O Q. ^aw Down ~rlflce [Inches] 3' end of the pool area to improve basin trap efficiency. (n 0
'J' Intake Elev, stake Elev, 699,10 D
'K' Bottorl Draln SI; 'L' Antl-flotatlon B ' 7. Erosion control -Construct the structure so that the disturbed area is minimized. W ~ ~ ~ttori Drain Slze [Inches] 6 ~ ~ C ~tl-flotation Block Dlrl. 6'-0'x4'-0'x3'-6' Divert surface water away from bare areas. Complete the embankment before Q ~ ~
Antl-flotation E ~tl-flotation Block Vol, 2,98 CY MINIMUM the area is cleared. Stabilize the emergency spillway embankment and all other W ~y _
'M' Antl-Seep Collar - ' 4-6' disturbed areas above the crest of the rind of spillway immediately after W • ~tl-Seep Collar Slze 4 6 x P P ~
2 Year Peak Pre-Develo{ Year Peak Elev. & Discharge [cfs] 700.08 & 0,47 construction}. ~ Pre-Developed Run-~f f [cfs] 41.68
Post-Devell Post-Developed Run-Off [cfs] 67,25 8. Safety -Detention basins may attract children and can be dangerous. Avoid
10 Year Peak I Pre-Develol I Year Peak Elev, & Discharge [cfs] 700.77 & 18.47 steep side slopes, and fence and mark basins with warning signs if trespassing Pre-Develo ed Run-Off [cfs] 74.08 is likely. Follow all state and local requirements. P
Post-Devell Post-Developed Run-Off [cfs] 117.60
25 Year Pea Pre-Develol ~ Year Peak Elev, & Discharge [cfs] 701,66 ~ 31.28 Pre-Developed Run-off [cfs] 92,64
Post-Devell Post-Developed Run-Off [cfs] 146.30 ANNUAL INSPECTION/MAINTENANCE PROCEDURES H
50 Year Peak Pre-Develol Year Peak Elev, & Discharge [cfs] 708.43 & 32.20 Pre-Developed Run-Off [cfs] 106.5'c
~V Post-Devell Post-Developed Run-Off [cfs] 167.74 I. Annual Inspection: Annual inspections shall be scheduled by City of Concord and
B B _ _ _ - 100 Year Peak f Pre-Develol 10 Year Peak Elev, ~ Discharge [cfs] 702.95 a 32.80 Owner to be performed on the first of June each year. Pre-Developed Run-Off [cfs] 115,75
Post-Devell Post-Develo ed Run-Uff [cfs] 181,99 II. Inspection Activities:
H
CATTAIL (7 a) Testing of the emergency drain pipe valve. CATTAIL (Typha Latifolia), 1 Gallon Size F...~ b) Visual inspection of drawdown orifice. 1~1
c) Visual inspection of the trash rack at the intake orifice. M""'~ ~ N~y W
A PICKERELW P ntederia Cordata 1 Gallon Size d Visual Ins ection of the emer enc s iliwa . PtCKERELWEED (o ) P 9 Y P Y
s~tw~rp~~v,~w e Visual ins ection of the and rim and slo es. ~ A P P P f) Measurement of the wet pond depth of the dam end of the
BLUE-FLA( BLUE-FLAG IRIS (Scirpus Volidus), 1 Gallon Size detention pond (Distance from permanent pond drawdown orifice A
NOT TO SCALE EDGE OF POND invert to bottom of basin). rr ~j - - - - - - - - Visual ins ection of all stormwoter structures on the served site V
M **-SPILLWAY MAY BE 9) P f-~ n i n and. V 1 ~nu~ feeding the dete to p Z
~ 8 -C ~ 'D" MIN ARIE VARIES VEGETATED INSTEAD ARIE ( ) ARIE (MIN) , L, cJoF h) Visual inspection of the total site drainage basin for adequate f.y i, ~I~i ground cover to stabilize site. U
OF PAVED IF i) Visual inspection of upstream (off-site) areas feeding into the site W I. ..W
CONSTRUCTED _ _ TOP OF BERM EL ="E" T4P..~~EJ. ~ ) / ENTIRELY IN CUT. cNJo' N drainage basin for potential off-site sedimentation sources. N~y F-i•1
Y INV.= D VARIES SPILLWAY INV.= "D" J O ~ ~ ~ III. Maintenance activities shall be performed as follows:
a SPILLWA s~ ' ° ~ f..y
a " ' \ N~a - 1. After every significant runoff producing rainfall event and at least monthly: No~J a o ~
~ SPILLWAY WEIR UNING+~ , 1, a. Inspect the wet detention basin system for sediment accumulation, erosion, trash
~e• • accumulation, ve etated cover, and general condition. NUd 9 W
~ W/ 10x10x10/10 WWM. i r 4 O.C. cv o ~ !~-i 4' O.C. TvPicAE rYPICAE b. Check and clear the orifice of any obstructions such that drawdown of the temporary
UND EDG EDGE OF LITTORAL SHELF pool occurs within 2 to 5 days as designed. 2. Re air eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
SP/LL MAY SECT/O~V A-A _ SP/LL NAY SECT/ON B-B P mow vegetative cover to maintain a maximum height of six inches, and remove trash os
CLASS II RIP RAP OUTFACE PROTECTION. needed.
NOT TO SCALE Mw. THICKNESS= Iz', LENGTH=s'. NOT TO SCALE NOT TO SCAL£ 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.)
~ i ~ quarterly to maintain proper functioning.
ALAVC CENIFRL/NE I VCCENIFRUNEQ~PR~4RY•Sp/LLWAY 4. Remove accumulated sediment from the wet detention basin system semi-annuoily or when
depth is reduced to 75% of the original design depth (see table below). Removed sediment
r , 1-- i - - ~ - - 7- shall be disposed of in an appropriate manner and shall be handled in a manner that will I ! ~ not adverse) impact water quality (i.e. stockpiling near a wet detention basin or stream,
I i ~ % ; - I ~ Y etc.).
j I i Y I ~ ~I, I ~ ~ I
I ' ~ I ~ I ~I ~j li ; , i I ' I ~ I ~ r ~ ~ ~ ~ I I I ! I ' i i The measurin device used to determine the sediment elevation shall be such that it will ~,~nlnunlrrf/f I _ i 1 I- - . g qb i i { i give on accurate depth reading and not readily penetrate into accumulated sediments. P
I ~ v i 0 i ~ ~ l ~ i ~ c v` .''PL
t _ . T I_. (r1 - - _ I _ ! ' When the permanent pool depth reads 3 feet in the main pond, the sediment shall be ~1 removed. Q ~ ; y
I x ; o I ~ - i
ji ~ i ~i l _ ! _ % When the ermanent ool de th reads 3 feet in the forebay, the sediment shall be ~ ~W ~ P P P ,y• i •.w i~ j > 10 MIN I~ removed.
I i I i I, 'i ~ _ 1 ii i - ~ _ ~ I ~ I _ _ _ ~ _ ~ _ i ~ r i .d ~ , I
I i __I 5. Remove cattails and other indigenous wetland plants when they cover 54% of the basin
o, ( 'I" DIA. SCH._ 40 PVC ~ I GRASSED WEIR SPILLWAY _ _ ; . -._r-._ NEGATIVELY-SLOPED-.~_ o _ _ ~ surface. These plants shall be encouraged to grow along the vegetated shelf and forebay 1, \ ' ~ - --___i__. llflllllllllll i c-~ ~ ~ berm.
} _ I P~OWN ORIFlCE. I L,- I I A I . ' c ~ I -w ~ INV. EL;- "B" i v U I' ; '
m i --0 ~ - .c ~ , TOP. OF BERM EL="E" INTAKE i;EL.=_ i o v` 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of - ~ ° Q i I i sediment through the emergency drain shall be minimized to the maximum extent practical. REVISIONS BY
m ~ , , ~ _j ~ l c ~ W i I ~ > I ! j _ p
o , w W ~ q i ~ ; I i ~ O ~ 7. All components of the wet detention basin system shall be maintained in good working 0 4 N order.
J .J--"- _ Q Y _ i ~ '
V ~ I V , _ ~U X U ?C ! I
O X ! I - i I ' i I Y N ~ ' ~ t~ ; I i n I i i~ 1 ~ r ~ ~
o ~ ~ i rNr OO I I 'I j to I 1 i
fM1~, I ~ i ~ ~ I ~ ~ • , o NORMAL POOL EL= "B" NOR AL POOL EL.= M ~ , i QLEL.=•,
o ~ I ~ i _t j f j . i-. _ ~ -
N ~ ~ I i- I I I 11,
OPERABLE i ! i BOTfON DRANL I FR011 lOP OF ~ BODE _i m ~~E ~ I ~ I BODL LF _ ~ ALL BMP FILL EMBANKMENTS SHALL BE COMPACTED TO 95% STANDARD PROCTOR.
3 , ~ _ • " BOTTOM POOL EL= "A" OTTOM POOL A IOL EL= 'A' 1.25X
I ~ I ~ ~ ~ { I i i ' BMP POND AREA SHALL BE USED FOR SEDIMENT STORAGE DURING CONSTRUCTION. I, I I
~ 10 MI . IGAL - Date: 1209 03
m - ;PROPOSED GRADE I ' I ~ r___ -c I N PROPOSED GRADE --I , i I i ( I i N 1
LITTORAL SHELF TO BE PLA TEb ~ !WITH ACCEPTABLE AQUATIC PLANT ~ I i ~ ! ! ' 1 =50 Hor. Scale: I NSA
~ SPECIES AS SHAWN IN PLANTING DET. Q ! • •
z L ! j _ i L PERMANEN~'CONCRETE ANCHOR. d I i IgiOR. i i ~ Drawn: JMY i _ , _ I- - Checked: DLM
~ l I I 1 I i i
U i, ~ I
W TWO "M xO -6 TH o "fit"xO'-6" THICK ' yob: 03-07-06
CD CONC. ANTI-SEEP r NC. ANTI-SEEP CfOLLARS.
O I SOX MUST BE' Sheet ;
o . !NOTE: ALL CONNECTIONS TO INLET BOX MUST BE M SEALED WATERTIGHT. BEFORE YOU DIG l CALL 1-800-632-4949
N PERROVR ILAR 70 a9V7fJWAC Or RRLUARr SPILL #A' r , s N.C. ONE CALL CENTER PD- I
0 ITS THE LAW I
a T DESIGN ASSOCIATES P.A. Owner: Approved: Date of Issue: of Sheets
PUBLICATION OR REUSE OF THESE DRAWINGS OR ANY DETAILS WITHIN MUST BE WITH THE WRITTEN CONSENT OF PIEDMONT DESIGN Location: PR-20 r
u