20070665 Ver 1_Site Plan_20070416

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i ~ t ~ GATE POST t 'OST ~ e~ ~~~`',i
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i1 ~ v \ / / I ~ CORNER POST CONSTRUCTION SPECIFICATIONS ~ LINE POST ?R Q i ~ ~ ~r SPILLWAY PfPE SPECIFICATIONS r \ M
( 1 / 1 s t ~ r s
~ 1} Site preparations -Clear, grub, and strip topsoil from areas ~ under the embankment to remove trees, ve station, roots, and A. CORRUGATED ALUMINUM ALLOY PIPE (C.A.A.P.} ~ ~ ~ ~
\ I ~ ~ , / ~ 1 ~ ~ 9 ~ ~ other objectionable material. To foci€itate sediment cleanout ° ~ 1. THE- PIPE SHALL MEET THE APPLICABLE REQUIREMENTS '
' ; v ~ ~ i t3' and restoration, clear the poo€ area of all brush, trees, and TOP RA€L OF CURRENT A.A.S.H.T.O. SPECIFICATlpNS M-196, P,4'`tr
I ,f ~ ` , ~ ~ , i ~ ~ ~ , y~ ~ ~ i ~ ~ other ab'ectianable moteria€s. Stack ile a€€ to soil or sail 1 P P f h #9 GAUGE FABRIC LATEST EDITION. ®@roo{rrA$~°ti°°°°°/
contam~ng ;orgarnc ma#ter far .use on the outer she a t e W€TH 2n MESH ~ ~ \ C~ embankment to foci€itote vegetative establishment. Place
i J I t' ~ ' ~ ~ ~ ~ ~ BRACE t. ~ ~ > tem ora sediment control measures below the basin as needed. P rY ~ o 2. THE PIPE SHALL BE FABRICATED WITH Two ANNUEAR CORRUGATED REROLLED ENDS OR BE FURNl5NED WITH
/ ~ i ~ , ~ } r ~ ~ J jr 1 I FLANGED ENDS TO BE CONNECTED USING STAINLESS
1 ~ / \ ~ 2} Cut-off trench - Excavate a cut-off trench along the \ ~ center€ine of the earth fi€! embankment. Cut thb trench to STEEL HRRDWARE AND CLOSED CELL NEOPRENE GASKETS.
i~ f~ ~ ~ S O i ~ ~ . A ~ ~ \ - ~ ' 9 o ~ s b€e soi€ moteria€ but in no case make it less than 2 feet ° " to ~ ~ TIE WHERE REROLLED ENDS ARE USER, A HUGGER TYPE BAND
i r~ I i' \ ~ ~ ~ / Th ut-off trench must extend into both obutments to ~ deep. e c rn RODS WITH »0" RING GASKETS WILL BE REQUIRED.
F ~ j .1 p ~ ~ _ O CSC ~ ` at least the elevation of the riser crest. Make the minimum ` bottom width wide enou h to ermit o eraton of excavation and 3. THE PIPE SHALL BE FORMED FROM SHEET CONFORMING Tfl THE
' / /~R / ~ \ ~ i \ ~ X ~ ~ g P P com action a ui meat but in no case €ess than 2 feet. Make ~ P q P #7 GAUGE TENS€ON WIRE REQUIREMENTS OF A.A.S.H.T.O. SPECIFICATION M-197. ~
i i ~ / 1 ~ ~ \ ~ ~ r n h n r h n 1:1. m Lion ~ side s€opes of the t e c o steeps t o Co pac \ THE CORE ALLOY SHALL BE 3004-H34, CLAD ON BOTH SIDES 7
~ ~ Q / / ~ 1 9 ~ . v. ~ ~ \ requirements are the some as those for the embankment. Keep o ~ ~ rin. I WITH ALLOY 7o7z. ~ Z C~
r f r \ / ~ ~ 1 the trench dry during backf~llmg and campact~on ope at o s TIE FABR€C TO WIRE & TOP R~ FABRIC TO TENSION Z Z
~ 'i ~ l r 3 Embankment -Take fi€€ moteria€ from the a roved areas shown ~ ) PR 9 GAUGE filE E & TOP RAIL WITH ~ ~ Z r GAUGE fi!E WIRE ~ EE! d( W
' ~ ~ ~ on the plans. It should be clean minera€ soi€, free of roots, W Z ~
i / ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ / ~ woad ve station rocks and other ob"ectionabie material. ~ ~ Y g. , ) ~ cif r ' s on which fill is to be laced before lacin M Sca y a ea P P 9
~ ~ f ~ ` ~ ~ ~ $'-O" MAX. CORNER-LINE POST 8'-O" LINE-L€NE €EAF SlZ ~ fil€. The fill moteria€ must contain sufficient moisture so LEAF SIZE AS REQUIRED
~ ~ f it can be formed by hand into a ba€! without crumbling. € Q ~ ® ~ TOP aF DAM Z Z C!)
~ ~ r x ~ 't w r n ' s ezed out of the boll it is too wet for $'-0" ATE-LINE ate ca be que G ro er com action. Place fil€ moteria€ in 6 to 8 inch 57~.4U ELI ~C
~ ~ ~ x / GABIOP~S ~ P P P continuous'lo ers over the entire lea th of the fi€( area and Y 9 ~Ir' E~fi{~-~ 3 1 ~ -----'IIE~;s- - 1(-I ~
i / f ~ / - ~ ~ ELEVr.57 then compact it. Compaction may be obtained by routing the 6 MIN, ( 5~~.00
~ / ~ ~ ~ ~ ~ ~ i construction hauling equipment over the fi€€ so that the G FRAME WORK CHART -GATE LEA _ GATE I?oST SIZE GATE..,LEAF SIZE GATE POST ~ ~ I E ! 1 r ~ i I ~ C i
r ~ r ~ enure surface of each layer ~s troversed by at least one wheel ar tread track of the hea a ui meat, or a com actor FABRIC FIEIGHT LINE POST TOP RAiL END CORNER POST 6'. OR LEA ~ vY q P . P 6'. OR LESS 3" O.D.
f ~ mo be used. Construct the embankment to an elevotian 10~ 4'-6' 2» O.D. 1 5 8" O.D_ 2 1 2" O.D. $'-12' Y 6`-12' 3» O.D. 25' o N _ ~ E
i ~ , - ..1.C _ higher than the design height to a€low far settling. 7'-9' 2 1 2" O.D. 1 5 O.D. 3" O.D. 12'-20' 12'-z0' 4" O.D. WIDE ~ ~ ~ N ~ ~
_ J / ~ 1,, 1 c 10'-12' 3" Q.D. 2" O.D. 4" O.D. 20'-24' \ - - - - 4 Conduit s illwa - Secure) attach the riser to the barrel or ) P Ys Y OVER 12' 4" O.D. 2" O.D. 4" O.D. OVER 24' 20'-24' 6 5 O.D. co ~ ovER z4' s ~ s° o.D. EMERGENCY SPILL~IAY z v ~ ~
barre€ stub to make a watertight structural connec#ion. ~ QZ~o~Z
C ~ ~ %a / 0 Secure a€€ connections between barrel sections b a roved \ Y PP r~TS ~ ~ ,
1 _ \ 1 i J H 10 A , wotertfgh# assemblies. P€ace the barre€ and user an a fErm, \ smooth foundation of im ervious sail. Do not use ervious W °ZO~°a
1. ~ - 1 ~ OP57t P P l`'~- i h n r v€ r r h n ackfi€€ _ ~ mater tal sec as sa d, g a e , o c us ed sto a as b 0~°~~3
_ t ~ NTS around-the pipe or anti-seep co€lars. Place the fi€€ material 3
1~ AB G IONS ~ around the i e s il(wa in 4-inch €a ers and com act it under P P P Y Y P = li
- ~ ELEV. 573:0 - and around the pipe to of least the same density as the ad'acent embankment. Care must be taken not to raise the i e 1 PP i
. 571.1 ~ ' from firm contact with its foundation when cam actin under , P 9 g
1 the -pipe haunches. NOTE: IF POND IS USED AS R TEMPORARY SEDIMENT BASIN
i P€ace a minimum deQth of 2 feet of hand-compacted backfill over the pipe spillway before crossing it with construction THE SEDIMENT MUST BE REMQVED BEFORE MAINTENANCE RESPONSIBILITY IS TRANSFERRED TO UNION COUNTY PUBLIC . SCHOOLS. n,,r
' equipment. Anchor the user ~n place by concrete or other I~L~.~
i satisfacto :means to revent flotation. €n no case should ry P
the i e conduit be insta€€ed b cuttin a trench throe h .the PP Y 9 9 24" x 1/4" THICK ALUMINUM ANTI-VORTEX PLATES EACH WAY
J ~6 dam after the embankment is complete. WELD INTERSECTIONS 5/8" DIA. ALUMINUM ROflS ~ t2°. O.C. ~ p~
` 5 Emer enc s illwa -Install the emer enc s i€Iwa in 4` ~ ) 9 Y P Y 9 Y P Y 5/8~ DIA. ALUMINUM ROfl5 ®12" O.C. EACH WAY, TYPICAL V J
REPLACE 12 LF OF 24 l ~ s n / ~ W 1 ~ LF aF 24 undisturbed soil. The achievement of p€anned elevations, EACH WAY, TYPICAL WELO ALt INTERSECTIONS
~ ~ @ 0. a. SET MANHOLE 94A ~ ~ cads desi' n width and entrance and exit channel slo es are 9 g P ~ critica€ to the successfu€ operation of the emergency WELD ALL INTERSECTIONS
i PLUG OUTLET AND REROUTE TOP 582. - ~ S L ~ ~ 0 spi€{way. ' 3 P A t A PRO osEa 54 DI . O G UcE ~
~ ? ~ 1.. , AS SHOWN. ~ INV 571.4E ~ / ~ r E ~ E I r ~ 3" x 1" CORRUGRTEa ALUMINUM
~ STALL 24 RC OUT OF MH 4A; ~ ~ ~ ~ 6 6 In€ets - Dschar a water into the basin in a manner to revent 9 P erosion. Use diversions with outlet rotection to divert 6" TRASH RACK SKIRT 6"
f AS SHOWN PLUG LINE TO ~OUTL 0,3 ~ ~ , $ ~ ~ NCE 2 GAT P sediment.-:laden water to the upper end of the gaol area to
~ p P Y ~ in1 rave basin tra efficienc . References Runoff Control 3 z
S ~ ~ Pr i n PERSPECTd Uf Measures and Outlet atect a ) > ~ a / ~ ~ ~
/ ~ , \ \ ~ ~ ~ / ~ \ ~ \ i S RlP-RAP GABfON F+~REf3A Y 6V,4LL i Erosion control -Construct the structure sa that the N
~ ~ ~ ~ r w f r m N is % ~ disturbed area Es mm~m~zed. Divert surface Ovate a a a i Y r
~ / ~ ~ ~ v ~ r , r ~ ,i ~ ~ ~ \ ~ ~ bare areas.. Complete the embankment before the area is F .11 mm A ~ WIRE MESH SHALL BE CONSTRUCTED O 8 3 OO G GE I ,i" ~ ~ Z W Z
S ~ \ ~ c€eared, Stabi€ize the emergency spi€iway embankment and o€€ WELDED WIRE MESH OF A NQMINAL SIZE 3x3 76mmx7fimm . \ ~ , ~ ~ other disturbed areas above the crest of the principa€ ALL WIRE USED SHALL CONFORM TO ASTM A641 SOFT TENSILE rn W ~ p
~ i ~ ~ _ ~ spillway immediately after construction. (References: Surface minim m 0 000 si WITH A CLASS 3 GALVANIZED COATING. u 6 , p , Z
- ~ , ~ ' Stabilization} V MINI H AR _ ~ EACH WELDED CONNECTION SHALL HA E A MUMS E 24" x 1/4" THICK ALUMINUM ~ ~ ~ PROPOSED 36" alA. ANTI-VORTEX PLATES ~ Q
~ V A ~ A ` ~ % ~ TRENTH IN ACCORDANCE WITH ASTM A185. S 8} Safety -Sediment basins may attract children and can be C.A.A.P. RISER WELD INTERSECTIONS U W ~ W
~ ~ `v " " dangerous. Avoid steep side slopes and fence and mock basins Z Z t~
W = PROTECTIVE COATING WHERE ADDITIONAL PROTECTION IS with worrnng sEgns ~f trespassing ~s I~kely. Fo€low a€I state , O F- t~ 4 W Q ~
! r 'ti ` V ~ V ~ \ a = ~ n € c € re uirements. REQUIRED SHALL BE AN EPOXY COATING. a d oa q CLASS II 36° C.A.A.P. RISER
i ~ A ~ ~ MA€NTENANCE
~ S~ `ice \ \ ~!1 2" TYP m
Check sediment basins after eriods of si nificant runoff. Remove ~ P 9 ELEVATION PLAN
' sediment and restore the basin to its original dimensions when linen accumulates to one-half the desi n de th. STORMWATER LEVELS INFLOW OUTFLOW BAS€N LEVEL sed t g p ,
\ V A ~ ~ 1O YEAR 162.17 CFS 78.09 CFS 573.44 l ` ? ` --~R~SN RACK DETAILS Z
- k h m akin nt s illwa s and outlet for erasion damo a and 100 YEAR 223.64 CFS 82.16 CFS 514.03' Chec t e e ba e, P Y 3 9,
` ~ inspect the embankment for piping and settlement. Make a€€ necessary repairs ..immediately. Remove a€I trash and other debris NOT TO SCALE ~ v
\ from the riser and oo€ area. ~ P w
0
GRAPHIC SCALE S
40 20 0 40 80 ~ - ` ~ , S
i ..-S ~'O~D .I~TEN.A~CE .~EQ UIREMEN~'S:
1 = 40 FEET --4 ~ ~ ' ~ S/Z~ _ COMMDN NAME' BOTANICAL NAME uANTf TY t~
~ 0, - CLASSIFICA TION 1. INSPECT MONTHI Y, OR AFTER EI<ERY RUNOFF-PRODUCING RAINFALI EI/ENT, WHIGHEk~ER COMES. F/RST. ~ A. REMOVE DEBRIS FROM THE TRASH RACK.
--y B. GHECK AND GLEAR THE OR/FICE OF ANY OBSTRUCTIONS. fF A PUMP /S USED AS THE DRAWDO~YN ~ - {v ~ ~ ~
% BENT GRASS AGROST/S PERENNANS IQ9" OF SEEfl MIXTURE MECHANISM, CHECK FOR PUMP QPERA TfON. C. CHECK THE POND SIDE SLOPES,- REMOVE TRASH, REPAIR ERODED AREA BEFORE THE NEXT RA/NFALL
- ~ ~ v ~ _ EI/ENT.
SWAMI sUNrucwtr~' HEL/ANTHUS ANGUSi/foL/u5 fi 70~ OF SEED MIXTURE D. IF THE POND /S OPERATED WIIN A ?~EGETA TED FIL TER, CHECK THE FlL TER f EIK SELUMENt
ACCUMULATION, EROSION AND PROPER OPERATION OF THE FLOW SPREADER MECHANfSM. REPAIR AS NECESSARY.
BUTTERFLY WEED ASCLEP/AS TUBEROSA 'H' f0% OF SEED MIXTURE 2. OUARTERL Y
A. INSPECT THE COLLECTION SYSTEM (t.E., CATCH BASINS, PIPING GRASSED SWALES) FOR PROPER FUNCTIONING. CLEAR AGCUMULA TED TRASH FROM BASIN GRATES AND BASIN BOTTOMS, AND CHECK
PURPLE TOP TRlOENS FLA SUS 33~ OF SEED MIXTURE PIPING FOR OBSTRUCTIONS.
B CHECK PDND INLET PIPES FOR UNDERCUTTING, REPLACE R/PRAP, AND REPAIR BROKEN PIPES
BlG BLUE STEM ANDROPOGON GERARDU N~~ 209,' OF SEED MIXTURE C RESEED GRASSED SWALES, INCLUDING THE VEGETATED FILTER IF APPLICABLE, TWICE A YEAR AS NECESSARY. REPAIR ERODED AREA IMMEDIATE[ Y.
3. EVERY 6 MONTHS
A. REMOVE ACCUMULATED SEDIMENT FROM THE BOTTOM DF THE OUTLET STRUCTURE. ~ B. CHECK THE PDND DEPTH A T VARIOUS POINTS IN THE POND. ff DEPTN /S REDUCED TD 75.E OF
RED TOP AGROST/S ALBA H~~ 77% OF SE£D MIXTURE ORIGINAL DESIGN DEPTH, SEDIMENT WILL 9E REMOVED TD A T LEAST ORIGINAL DESIGN DEPTH
28 PLANTS SPACED 24" APART APART 4. GENERAL Q'
DUCK POTATO SAGlTTARlA LAT/FOL/A PLAN7 /N THE FIRST 6° OF WATER THREE SQUARE BULRUSH SCIRPUS AMERICANUS h,•~ 28 PLANTS SPACED 24" APART 1F WATER EE€~EL A. MDW THE SfDE SLOPES, NDT INCLUDING NORMAL[ Y SUBMERGED VEGETATED SHELF, ACCORDING TQ W THE SEASON. MAXIMUM GRASS HEIGHT WILL BE 6"
q pAR ~ 8, CATTAILS, AND OTHER INDIGENOUS WETLAND .PLANTS, ARE ENCOURAGED AL DNG THE POND J
PLANT /N THE FIRST 6' flF WATER SOfr ST£M BULRUSH SC/RPUS VALIDUS .~y-- 28 PLANTS SPACED 24" APART WA TER LEI/EL PERIMETER; HOWEVER, THEY MUST BE REMOVED WHEN THEY COINER THE ENTIRE SURFACE AREA QF THE PDND.
APART C. THE ORIFICE IS DESIGNED TD DRAW DOWN THE POND fN 2-5 DAYS IF DRAW DOWN IS NOT r°'1 W
PLANT /N THE FIRST 6" OF WA TER ?F WATER LEI/EL ACCOMPLISHED tN THAT TIME, THE SYSTEM MAYBE CLOGGED. THE SOURCE OF THE CLOGGING = MUST BE FOUND AND EUMINA TEL?
AREA TO BE SEEDED = 5, 500 Sq. fT. D. ALL COMPONENTS OF THE DETENTION POND SYSTEM MUST BE KEPT IN GDDD WORKING ORDER.
RAT€S PER LANDSCAPING STANDARDS ~--t
'~i
i
LEGEND PROPOSED 54" DIA. 10 GAUGE ~
3" x 1" CORRUGATED ALUMINUM ~ Q
TRASH RACK, SEE THIS SHEET W = ~ ~ o
EAR EXISTING /RDlV ROD FOR DETAILS Q Q ~
W x v
EPK EXISTING PK NA/L ~ W ~H ~ J ~ ~
I ~ lwa NA/L IN PA t/EMENT ~ Wiz
1 TOP TRASH RACK 574.00 ~ ~ ~
l i i s'~~`~~^~ EX/STJNG WOODSL/NE ~ Q o z
1 3 I ; i ~ EXISTING OVERHEAD ELECTR/C I
E I E 1 ? - - - - EXISTING FLOOD PLAIN M T P F RISER. 57 .00 ~ ~ ~ 0 0 3 ~a' W o U
r ~ i ~ i E i i - EXISTING POWER POLE TEMPORARY WATER ~ ~
1 j r i j i E ~ I QUA[€TY ZONE ~
i ! I 3 j ~ ~ EXISTING FIRE HYDRANT & VAL VE 1/2" U-BOLT ELEV.571.00 ~ ~
1 1 4 ' 1 ~1L~Gn71~i-- vd EXIST/NG WA TER UNE Q
f ~ ~ f 4 ~ i 1 ~ 5.0 EXISTING FENCE NOTCH TRASH R 574.0 I ~ ~ EXISTING TREES AROUND BARREL TRASH RACK 3.5,. WATER QUALITY ~ R~
1 s ~ F-7 ~/.y ( J! V.V~ 3 BARREL RELEASE ORIFICE 6» DRAIN ~ ~
~ I i i # ~ ELEV.571.OO ~
I i ~ ~ ~ ~ ' 573. ~ ~ EXISTING CREEK ~""'f""' 572.0 ; _ _ . _ _ . - EXISTING S/GN PERMANENT POOL ~ ~ ~ ,r
~ ~ ' 7 . I A ~ 2Q i ~ ~ SHEAR GATE 3' DEEP
~ I ~~E~_ _ ~ ~ ~ EXISTING MAJLBOXES 36" C. A. A. P. BARREL BARREL LIFT ROD
1 i2% 48>, C.A.A.P. & FRAME RISER Q W
r. _ _ ~ - -~--E--- o i ; ~ j o ~ ~ ' - - EXISTING WETLAND AREA ~ ~ 52% ~
~ a ~ - ` ' ~~~A 1 E_ ELEV. 568.00
t j r ~ L I I E ~ ~ t ~ - ~ ~ i
Q I 1 1 Q ~ j ~ f A TI-FLOATIO BLOCK I I ~ POURED
~ ~ ~ j t 1 r ~ t INVERT o SEDIMENT W
1 I 1 ~ C ~ E I i ~ INV. 568.00 i i X68.00 N STORAGE ~
j ~ • 1 ~ i FILL W/ 3000 ELEV. 567.00
i V ~ E i ( E ' ~ 1 1 ~ 1 LEGEND ~ i PSI CONCRETE
E 1 ~ ~ ~ ~ 1 E ~ ~ ~ 150 PCF o I
r a
~ ~ ~ ~ ~ _ _ ; -W W- PROPOSED WATER UNE 3000 PSI CONCRETE
~ r. I 1 _ - _ j 150 PCF
3 j 3 / # ~ ~ ~ I i _ T ~ _ -S S - PROPOSED SANITARY SEWER
j I 1 ~ 1 jj I /W ~ ~ ' m PROPOSED SANITARY MANHOLE. CONCRETE RISER
3 ~ ~ ~ I ~ ~ PROPOSES CURB & GUTTER
M W p PROPOSED STORM STRUCTURE 6'-Q" SQUARE FOOTING TO BE ON SHEET N©. UNDISTURBED SOIL
11+60 PROPOSED STORM SEWER
j ~ RISER PIPE DETAIL
4J 4
E ~ ~ Q 1 Z ' R!P-RAP OUTLET PROTECTION NOT TO SCALE
Z ~E
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{ i N TRUCTION SPECIFICATIONS CO S /
i 1j 5ite preparations -Clear,, grub, and strip topsoil from areas i ~ I PROPOSED 54" DIR. 10 GAUGE ~
r j / / / i ~ under the embankment to remove trees, vegetation, roots, and 5} Emergency spillway -Install the emergency spillway in ~ i other objectionable material. To facilitate sediment cleanaut undisturbed soil. The achievement a# planned elevations, 3" x 1" CORRUGATED ALUMINUM o
1 / ; i ~ ~ and restoration, clear the pool area of all brush, trees, and grade, design width, and entrance and exit channel slopes are TRASH RACK, SEE THIS SHEET ~ ~ ~ ~
/ ~ / , / ~ ~ / ~t, ' other ab'ttectionable materials. Stockpile ail topsoil ar soil critical to the successful operation of the emergency 4 J FOR DETAILS s ~ c; to SIR ~ ~ 4
s + ~ l 1 ~ , ` nt lulu on anic matter for use on the outer shell of the s iliwa . ca a g g P Y
~ ~ ~ I ~ ~ r ' ~ embankment to facilitate ve etative establishment. Place 9 6 Inlets - Dischar a water into the basin in a manner to prevent ~ temporary sediment control measures below the basin as needed. a o®orP$~ ~,®~!®e8e
r ~ t l f 't / / erosion. Use diversions with outlet protection to divert , ~ 2 Cut-off trench - Excavate a cut-o#f trench along the ~ n -l n w ter to the u er end of the aol area to sedame t ode a Pp P M
. ~ , ~ ~ ~ ~ ~ ~ .;U ~ i ~ i ! '•ti ~ ~ ~ 1 r ~ rnh centerline of the earth fail embankment. Cut the t e c to im rove basin tra efficient . References: Runoff Gantrol P P Y ~ TOP TRASH RACK 579.00
i ~ ~ ~ ~ l ~ ~{l; t ~ ~ ~ ~ / 1 ail? ~t ~ / \ stable soil material, but in na case make it less than 2 feet Measures and Outlet Protection) ` e . The cut-off trench must extend into both abutments to
% \ i de P _ I h elevation of the riser crest. Make the minimum 7j Erosion control Construct the structure so that the at east t e TOP OF RISER. 577.50
/ , i ~ ~ / rmit o eratian of excavation and disturbed area. is minimized. Divert surface wafer away from ~ ~ bottom width wide enough to pe p TEMPORARY WATER
1 in no c se less than 2 feet. Make bare areas, Complete the embankment before the area is compaction equipment but a QUALITY ZONE
~ , si a s(o es of the trench na stee er than 1:1. Cam action cleared. Stabilize the emergency spillway embankment and all d p p P '1 other disturbed areas above the crest of the rinci al re uirements are the same as those for the embankment. Keep P p q f 1/2" U-BOLT ELEV. 578.00 Q
~ ~ 1 ~ ~ f '<< m a Lion a erations. spillway smmed~ately after construction. (Re erences. Surface the trench dry during backf~ll~ng and ca p c p 3.5" WATER QUALITY
\ ~ \ ~ ~ 11 ~ ~ ~ ~ Stabilization} t" - r v r sh wn ~ 3) Embankment Take fill material from the app o ed a eas a RELEASE ORIFICE
` ~ ~ ~ r ~ i 1, Safety - Sed'+ment basins may attract children and can be an the pions. It should be clean maneral soil, free of roots, ~ don emus. Avoid steep side slopes and fence and mark basins ELEV. 576.00 ~ PERMANENT POOL z
~ ~ ~ ~ t ~ woody vegetation, rocks, and other objectionable material. 9 ~ f r ( in with warning signs if trespassing is likely. Fallow all state 6' DEEP ~ ~ Z - ~
~ ..r ; Scarify areos on which f,li ~s to be placed be o e p ac g ~ n in sufficient moisture so and local requirements. fill. The fail mater~a( must co to z Z W Z
~ / f ; r it can be formed by hand into a ball without crumbling. If T NAN E l ~ MAINE C
~ i / l ~ ! ~ ~ i LA = 1 water can be squeezed out of the ball, it is too wet far 6 DRAIN W Q W £LEV.570.00 ~ Z ~
1 , / ~ \J , 1 ro 'er tom action. Place fill material in 6 to 8 inch Check sediment basins after periods of signif,cant runoff. Remove ~j ~ i P P P t ! continuous la ere over the entire ien th of the fill area and sediment and restore the basin to its original dimensions when r f Y 9 SHEAR GATE
% ~ i ~ i % ~ ~ ~ ~ ~ f - ! j ~ I " ! ~ then: compact it. Compaction may be abtoined by. ranting the sediment accumulates to ,one-half the design depth. " . A.l
~ ~ / ~ ~ ~ LAS v h fills that the km n iilw s and outlet far erosion lama e and 36 C ~ construct~an hauling egwpment o er t e a Check the emban a t, sP aY x 9 36" C.A.A.P. BARREL LIFT ROD SEDIMENT ~ ~ ~ ~8 C.A.A.P. & FRAME -t- C~ 0.58 RISER STORAGE Z Z
~ / ~ ~ ~ ~ / i ' ~ t entire surface of each layer is traversed by at least one inspect the embankment for piping and settlement. Make aU 1 " wheel or tread track of the heavy equipment, ar a compactor necessary repairs immediately. Remove all trash and other debris ELEV. 567.00 W Q
~ 32 ~ , , ~ ~ ~ / + ~ may be used. Construct the embankment to an elevation 1O% from the riser and pao( area.
W= ~ ~ ~ ~ $ ~ X I ~ hi her than the design height to allow for settling. ~ 1 9 POURED
~ t ~ / GABIONS v ~ LASS N ' ~ ~ ~ i 4 CanduEt s ~Ilwa s - Securel attach the riser to the barrel or t ) P Y Y INVERT o
1 A ~ ~ barrel stub to make a waterti ht structural connection. J ~ " g f Et fNV. 567.00 ~
~ ~ c r 1 Seeure all connections between barrel sections by approved c ~ IN II A f 1 ~~;Y I L FILL w/ 3000 Q ~ ~
/ i ~ ~ ~ , 1 ~ ~ ~ ; ~ X ,F waterti ht assemblies. Place the barrel and riser on a firm, 9 smooth foundation of im envious sail. Da not use pervious f , A PSI CONCRETE ~ ~ cV ~ ~
j ~ 1 I material such as sand, gravel, ar crushed stone as backfili M(N M ALLOY PIPE C.A.A.P. ~ , A. CORRUGATED ALU U 150 PCF ~ ~ tV ~ c.v ~ ~o v
~ ~ / ~ ~ ~ ~ ! ' around the pipe or anti-seep collars. Place the fill material ° Q Z ~0 0o z
1 ~ ~ i around the i e s illwo in 4-inch la ens and corn act it under t X P P P Y Y P 1. THE PIPE SHALL MEET THE APPLICABLE REQUIREMENTS ~ ' and around the pipe to at least the same density as the 3000 I Sf CONCRETE M -3 ~ ~ ~ 150 PCF ~ ~
~ ~ / ~ RCS ~ ~ OF CURRENT A.A.S.H.T.O. SPECIFICATIONS M-196, ~ ~ ~ l 'acent embankment. Care mast be taken not to noise the i e i adj P P Ciz^~p
-f " / ~ from fjrm contact with its faundat~on when campact~ng under CONCRETE RISER a+~='~"' ~ ~ " ~
~ i ~ the pipe haunches. ,i 2. THE PIPE SHALL BE FABRICATED WITH TWO ANNULAR FOOTING TO BE ON ~ _ ~ 6'-O» SQUARE ~ c~ Q
S 1 ~ I ' x Place a minimum depth of 2 feet of hand-compacted backfil( CORRUGATED REROLLED ENDS OR BE FURNISHED WITH over the pipe spillway before crossing it with construction .UNDISTURBED SOfL ~ ,p = fL
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ FLANGED ENDS TO BE CONNECTED USING 5TAINLESS equipment, Anchor the riser ~n place by concrete ar other ' 1 STEEL HARDWARE AND CLOSED CELL NEOPRENE GASKETS.
/ ~ ~ ~ , ~ 1 satisfactory means to prevent flotation. In no case .should RISER PIPE DETAIL ~
~ / ~ i / i 4 i ' ~ } i ins fled b cuttin a trench throe h the WHERE REROLLED ENDS ARE USED, A HUGGER TYPE BAND the pipe condu t be to y g 9 n i " ~ ~ dam often the embankment is tom fete. WITH O RING GASKETS WILL BE REQUIRED. ~ P NOT TO SCALE .r..•
S ~ ~ ~ ~ ,
' ~ 3. THE PIPE SHALL BE FORMED FROM SHEET CONFORMING TO THE I T A.A..H.T.O. SPECIFICATION M-197.
~ ~ r ~ ~ A REQUIREMEN S OF S THE CORE ALLOY SHALL BE 3004-H34, CLAD ON BOTH SIDES GATE POST ,.~C„
'~w S A 1 ~ J CORNER CORNER POST .iC
~ ~ - - - ~ 19 ,4 22 LINE POST ~
ti ~ ~ ~ ,i~ A S r
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i ~ ~ V ~ ~ STORMWATER LEVELS INFLOW OUTFLOW BASIN LEVEL g IN 4. ~ ~9 GAUGE FABRIC
~ \ \ ~ t ' 10 YEAR 138.99 CFS 87.89 CFS 577.18' WITI X t s ~ 1 1. FS 99.96 CFS 577.78 10O YEAR 9 66 G WITH 2" MESH BRACE
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1 - 20 FEET i O l ~ #9 GAUGE 71£ WERE Z z z Y W W
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~ ~ . ~ ~ ~ » € ! ~ ~ ~ 8 -O MAX 8'-0" MAX. CORNER-LINE POST 8'-O" LINE-LINE LEAF SIZE AS REQUIRED ~ a ~
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~ ~ ~ ~ <l ~ INV. 575.15 ~ ~ FRAME WORK CHART GATE LEAF SIZE GATE POST
FA$RlG Hi FABRIG HEIGHT LINE POST TOP RAIL END CORNER POST 6' OR LESS 3" O.D.-~
~ i ~~,~i~~i-- W - 23 ~C 0 0 ~ ~ ~ 4'-6' 2» O.D. 1 5 8~ O.D. 2 1 2" O.D. 6'-12' 3» O.D. t~ 7°-9' 2 1 2» O.D. 1 5 8" O.D. 3n O.D. 12'-20' 4" O.D. R~
,t ~ D=22 ~ ifi ,1. ifi ~ 1O -12 10'-12' 3» Q.D. 2» O.D. 4„ O.D. 20'-24' 6 5 8" O.D. ~
r CLASS (I OVER 12 OVER 12' 4» O.D. 2" O.D. 4» O.D. OVER 24' $ S 8" O.D.
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SIZE .POND .~A.tNT N { ~ \ / ~ \ ~T N CE RE tIIR ME.NT ~ ~ i } \ ~ ~
CQMMQN NAME BQTANfCAL NAME QUANTITY CLASSIFICA Tff?N RAINFALL EI~ENT WNICHE~E'R COMES FIRST. ~ ~ \ ~ ~ NAP NAIL IN PA I/EMENT ~ \
r. INsPECT MONTHLY aR At „ „ A. REM©k~" DEBRIS FROM HL Y, OR AFTER EVERY RUNOFF-PRODUCING ~ ~ ~ ~ _ ~ } ~Q ~ \ a-------- Q ;BRf5 FROM THE TRASH RACK. RC ~ ~ ~ ~ EXISTING WOODSLINE
AGROST/S PERENNANS H tOq OF SEED MIXTURE - B. CHECK AND CLEAR TH BENT GRASS CLEAR THE ORIFICE OF ANY DESTRUCTIONS IF A PUMP /S USED. AS THE DRAWDOWN ~ t ~ \ ~ ~ ~ S~
MECHANISM, CHECK FL C CHECK THE POND SIDE 1, CHECK FOR PUMP OPERATION. \ ~ ~ ~ \ ~ ~ POND SIDE SLOPES; REMOIfE TRASH, REPAIR ERODED AREA BEFORE THE NEXT RAINFALL _ ~ ~ ~ ~ ~ EXISTING OVERHEAD ELECTRIC \ . ~
INAMP SUNFOLWER HELIANTHUS ANGUSTiFOLfUS nHn F ED MIXTURE EvENT S 1 ~q O SE ~ ~ ~ ~ ~ EXISTING FLOOD PLAIN ~ ~ ~ ~
IF THE POND lS OPERA AccUMULAT~oN, EROS1~ P RAT WITH A VEGETATED F/L TER CHECK THE F/L TER FOR SEDIMENT . ~ r,'~ ~ ~ ~ ~ VD/S0E ED ~ 1 M. R PAIR g ~ TION, EROSION AND PROPER OPERATION OF THE FLOW SPREADER MECHAN S E ~ ~ EX/STING POWER PDLE ~ b ~
BUTTERFL Y WEED ASCLEPIAS TUBEROSA »H" 14q OF SEED MIXTURE AS NECESSARY. ~ ~ ~ >ARY. ~ ~ ~ ~ EXISTING FIRE HYDRANT & I/AL VE W
2. pUARTERL Y EXISTING WA TER LINE ~
A. INSPECT THE COLLECTi A Y mH ~ 3 F SEED M/X TURE FuNCTIaNINC. CLEAR PURPLE TOP TRfDENS FL US 3 ~ 0 TIN YSTEM I.E. CATCH BASINS PIPING, GRASSED SWALES FOR PROPER ~E COLLEC 0 S ( ~ N TT M AND CHECK ~ IG. CLEAR ACCUMULATED TRASH FROM BASIN GRATES AND BAS/ BO 0 S, x EXIsT~Nc FENCE ~
PIPING FOR OBSTRUCT OBSTRUCTIONS.
B. CHECK POND INLET PH P N ERARDff »H 209' OF SEED MIXTURE C RESEED GRASSED SwA VD INLET PIPES FOR UNDERCUTTING, REPLACE RIPRAP, AND REPAIR BROKEN PIPES. 'ASSED SWALES 1NCL UDING THE VEGETATED F!L TER fF APPL/CABL£, TWICE A YEAR AS , EXISTING TREES W
BfG BLUE STEM ANDRO OGO G NECESSARY. REPAIR REPAIR ERODED AREA tMMED/A TEL Y. EXISTING CREEK = ~
3. EVERY 6 MONTHS !THS :CUMULATED SEDIMENT FROM THE BOTTOM OF THE OUTLET STRUCTURE.
T/ A A »Hn 17% OF SEED MIXTURE A. REMOVE ACCUMULATEL RED TOP AcROS s La B. CHECK THE POND DES VARI PINT IN THE POND. 1F DEPTH /S REDUCED TO 7S9' OF POND DEPTH A T OUS 0 S GENQ EXISTING SIGN ~ ~
45 PLANTS SPACED 24 APART ORIGINAL DESIGN DEPT 3ESIGN DEPTH, SEDIMENT N9LL BE REM©~ED TO AT LEAST ORIGINAL DESIGN DEPTH, ExISTIIVG MAILBOXES ~ ~
I TARIA A TIFOLlA »H» u ~ GENERAL DUCK POTATO SAGT L PLANT IN THE FIRST 6 QF WATER LEVEL A. Maw rHE sIDE scaPE: PES NOT fNCLUDlNG NORMALL Y SUBMERGED VEGETATED .SHELF, ACCORDING TO 3 SDE SLt1 , • EXISTING WETLAND AREA e P"°°i
4 PLANTS SPACED 24 ~ APART THE SEASON. MAXIMG ~ 7N. MAXIMUM GRASS HEIGHT WILL BE 6
R UARE BULRUSH SCIRPUS AMERICANUS H FlR T n DF WATER LE4/EL E3 CATTAILS, AND OTHER TH EE SQ PLANT IN THE S 6 PERIMETER; HOWEVER, AND OTHER INDIGENOUS WETLAND PLANTS, ARE ENCOURAGED ALONG THE POND IN W PRaI • N TH Y YER TH ENTIRE SURFACE AREA OF HOWEVER, THEY MUST BE REMOVED WHE E CO E PROPOSED WATER LINE ~
45 PLANTS SPACED 24» APART THE POND. $ PROI PROPOSED SANITARY SEWER = Q z
. IRPUS ~ALIDUS ~H" C. THE ORIFICE /S DESIGn SOFT STEM BULRUSH SC PLANT /N THE FIRST 6 OF WA TER LEVEL ACCOMPI/SHED IN THA 'E /S DESIGNED TO DRAW DOWN THE POND IN 2-5 DAYS. iF DRAW DOWN /S NOT PRDI PERSPECII SHED IN THAT TIME, THE SYSTEM MAYBE CLOGGED. THE SOURCE OF THE CLOGGING PROPOSED SANITARY MANHOLE ~ a ~
_ MUST BE FDUND AND AREA TD BE SEEDED - 3, 800 Sq. fT. ~DUND AND ELIMINATED. PRUI RIP-RAP GA810N Ff~REBA Y WALL PROPOSED CURB ~ GUTTER ~ o v
D. ALL COMPONENTS OF RATES PER LANDSCAPING STANDARDS 7NENTS OF THE DETENTION POND SYSTEM MUST BE KEPT IN GOOD WORKING ORDER. N rs ? PROI PROPOSED STORM STRUCTURE ~ ~ x
PR01 WIRE MESH SHALL BE CONSTRUCTED OF .118 3.00 mm GAGE PROPOSED STORM SEINER ~ E-~ ~ o W z z
WELDED WIRE MESH OF A NOMINAL SIZE 3"x3" 76mmx76mm . ALL WIRE USED 5HALL CONFORM TO ASTM A641 SOFT TENSILE
minimum 60 000 si WITH A CLASS 3 GALVANIZED COATING. RfP-f P , RIP-RAP OUTLET PROTECTION ~ ~ o ~
i I f i { EACH WELDED CONNECTION SHALL HAVE A MINIMUM SHEAR ~ ~ z ~ 2 a
~ ~ I F f ~ STRENTH IN ACCORDANCE WITH ASTM A185. { 0
{ I S ~ 3 i PR T TI N IS ~ z ~ ~ ~ ~ z
t j ~ ~ ' ~ ; PROTECTIVE COATING; WHERE ADDITIONAL 0 EC 0 ! REQUIRED SHALL BE AN EPOXY COATING. 0
E ( ( ~ ~ , i 1 ~ ~ i ~ I 1 E ~ NOTE: IF POND IS USED AS A TEMPORARY SEDIMENT BASIN ~ Z
I + ! 1 i ! ~ i THE SEDIMENT MUST BE REMOVED BEFORE MAINTENANCE ~ RESPONSIBILITY IS TRANSFERRED TO UNION COUNTY PUBLIC SCHOOLS.
~ ! I ~ } E ~ 1 7 I I ; ~ f I i S I
1 I i i f i ~
r M N Y SP! ~ WAY t i ~ ~ ~ C - ~ ~ EE ! t 24" x T/4" THICK ALUMINUM E-? ANTI-NORTEK PLATES ERCH WAY
_ i 5~8. ~ AM ' I ~ TPOFD i ~ I i WELD INTERSECTIONS 5 j$n DIA. ALUMINUM RdDS ~ 12" d.C.
E ! i ~ I t ~ Q I 1 ~ ~ ! ~ f E 1 5/8" DIA. ALUMINUM RODS ~ 12" O:C. EACH WAY, TYPICAL
~ ~ i 1 ' ~ ~ ~ ~ ! E i ~ ~ ~ i ~ EACH WAY, TYPICAL WELD ALL INTERSECTIONS
~i I ~ ~ WELD ALL iNTERSECTIflNS ~ W
~ ~ I i ~ ~ ~ ~ ~ ~ ~ ! I _ ~ } _ i a ~ I PROPOSED 54" DIA. 1O GAUGE
o ~ 5 AN Tl S tv w i i a - 3" x CORRUGATED ALUMINUM
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~ ~ t0 _»T_ I I ~ x k PROPOSED 36 F _s.~_ 24" x 1/4" THICK ALUMINUM 'ROPOSED 36" DIA. ANTI-VORTEX PLATES
~ I - ~ _ j _ _ _ ~ " I i ~ C.A.A.P. RISER 's ~ i ;.A.A.P. RISER WELD INTERSECTIONS
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DESCRIPTION BY PROJECT JNG
STORMWATER MANAGEMENT PLAN RED oars DESGRIPT 0 IS-MARTIN-POWELL ~ QSSOCIQTES INC a DATE 4/9/07 DI"?~ 1 1
~F MARVIN RIDGE MIDDLE AND HIGH SCH40L Z m DESIGNED JNG 6415 ODD P~aNK ROAD ENGINEERING ~ o ~ EAL
DRAWN JNG HIGH POINT, NC 27265 4076
Z DRAINAGE AREA DELINATIONS 3 cHECKeo ~ c336) 886-4821 LAND PLANNING F
0 4
UNION COUNTY PUBLIC SCHOOLS 5 scare AS NOTED F,4x [phone] ,°•y'~~~ ~ ~ "~'Q SURVEYING °
UNION COUNTY, NORTH CAROLINA 6 SURVEYED N/A WWW.DMP-INC.COM ~.,,ES~E~~~~~..

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DESCRIPTION BY PROJECT E3768 DAVIS•MARTIN-POWELL & ASSOCIATES I~G
STORNIWATEft MANAGEMENT PLAN Ri ~ DATE DESCRIPT ~F rn MARVIN RIDGE MIDDLE AND HIGH SCHOOL z DATE 4-9-01 ~
DESIGNED JN6 6415 OLD PLANK ROAD ENGINEERING SEAL ~ ~
m 3 DRAWN JNG HIGH POINT, NC 27265 4076
o OVERALL SITE PLAN 4
~HEGKEO ~ c336) 886-4821 LAND PLANNING V FAX [phone] r ''y9~PF~ ~ N ~4~~•`
UNION COUNTY PUBLIC SCHOOLS 5 SCALE AS NOTED ~ SURVEYING ~~S E. p o°
UNION COUNTY, NORTH CAROLINA 6 SURVEYED N/A WWW~DMP-WGCOM °'~.u~ur.•~°~