20050732 Ver 19_Stormwater Site Plans_20110119

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E14, 9. CO'.. tACTOR 'MPERV[0US SURFACE %D Li 2. ROB DRAINS THE STOF..A n GE 20 0 10 40 SY::) wEM IN T Dr 1HE LO b`r UNDER GROUNir rlrE
WHERE NECE- INSURE EC V TO THE DIO-RE' `TION
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° ~ ~ ~ ~ SE ACK 1. DURING AND AFTER BIORETEI.,;QN AREA EYCJ, ~A~~N, ALL EXCAVATED MATER~a" 1. I ,1108 TO PLACEMENT OF THE NEW FILL, THE AREAS ON VJHIGH FILL IS TO BE PLACED r
SHALL BE REMOVED FRAM THE'"IT" OR LUr{' ;SUCH THAT RUNOFF FROM r"'.LL BE C RED AND STRIPPED OF TOPSOIL TREES, TS VEGETATION AND 30 COUNT BU.. ,_..._.AERAL) ~
MATERIALS OR ANY OTHER DISIIJRBED AREA DOES NOT ENTER THE BIORETEN1101 OTHER OBJECTIONABLE MA IAL THE AREAS O ICH FILL IS TO BE PLA D SHALL BU R {E ( } AREA, C'" SCARIFIED. ~
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THE BIORETEN110N AREA SHALL NOT BE USED AS A TEMPORARY QSION CONTROL 2. ANY REMOVED TOPSC'. ALL BE STOCKPILED FOR USE IN PLANTING (SEEDING) ON ~ a~
D CE (I,E, SEDIMENT TRAP OR SEDIMENT BASIN} DURING CONSTRUCTION. THE D ONCE F1NA1- RADES (AS SHO O THE GRADING PLAN HAVE BEEN ESTABISED V~TI G C FlLL ~ ~ x ;
3. ONCE CONSTRUCTED, THE BIORETEN110N AREA SHALL NOT RECEIVE STQRMWA E ~ ~ ~
RUNOFF UNTIL THE ENURE CONTRIBUTING DRAINAGE AREA TO THE FACILITY HAS BEEN 3, THE CONTRACTOR SE FURNISH, INSTALL, OPERATE, AND AINTAIN Y PUMPING COMP LY STABILIZED AND CONSTRUCTION IS GOMPLETI. EQUIPMENT, ETC. NEEDED FOR REMOVAL OF WATER FROM VARIOUS PARTS OF THE ~ ~ ca
RIORE TION EA SI . IT IS ANTICIPATED THAT PUMPING 6~LL BE NECESS YIN
4. PRIOR TO CONSTRUGIIQN, THE O.SITE GEOTECHNICAL ENGINEER SHALL VERIFY THE ~ EXCAVATION AREAS, D! ZING PLAC' ,TENT OF FILL VNIHIN THE EXCAVATION AREAS, SUITABILITY QF E PROPOSED BORROW AREA/FILL FOR USE IN THE DA®CONTRACTOR SHAIi KL T.:E rc LEVEL BELOW THE BOTTOM QF THE
EMBANKMENTfKEY TRENCH. I ._AVAlION, 1HE MANNE" I'; WHIG. ° W,+TER IS REMOVED SHALL BE SUCH 1HAT ~ a ~ s
..:E EXCAVATION BOTTOM AND SIDESLOFtS ARE STABLE, ~
PRIOR TO CONSTRUCTION, THE ONSITE GEQTEGHNICAL ENGINEER SHALL VERIFY THE F1LIT2Al10N AND PERMEABILITY ASPECTS OF THE PROPOSED BIORETENTION MATERIALS. I I j E ~ ~ ~
SPEC?AL A NTION SHALL BE PAID TO PREVENT MIGRATION OF FlNER SOIL PARTICLES ~
THROUGH UNDERLYING GRA LAYERS. L UNDERCUT BIOR:.f~:i'JN AREA TO NEGESSARY DEPTH (SEE BIORETENTION AREA CROSS d r r
I 6. THE ON-SITE GEQTECHNICAL ENGINEER SHALL INSPECT THE KEY TRENCH EXCAVATION SEGIIQN QN SHEET B-3), RIVATE STORM DI ,A E , , ~ E ~ W ~ ~ i m ® r~
PRIOR TO PLACEMENT OF ANY BACKFILL WITHIN THE KEY TRENCH. IF THE CONTRACTOR ~ I COLLECTION S&~~~ (aLE t CONSTRUCTS AND CO 5 UP THE KEY TRENCH PRIOR TO INSPECTION, THEN THE KEY PLACE 4 ADS N-12 UNDERDRAIN PIPES AND i JACKET LA . UNDERDRAIN S RM DRAINAGE P F ~
1RENGH SHALL BE UNCO ED AND TES AT THE CONTRACTOR'S EXPENSE SHALL- BE PLAC ON 3 T ~flOE SEGTIONP r" ,L.m~t CLQTH. THE ENDS OF THE DESIGN DETAILS)
UNDERDRAIN PIPES NOT MINATING IN A 6. V ~11QN SHALL BE CAPPED. ~ { ~
7. THE CONTRACTOR SHALL RE TO THE LANDSCAPE PLAN FOR THE PERMANENT 1HE CO CTOR PIPES SHALL E CONSTR" k> A MINIMUM SLOPE OF 0.59G j PLANTING PLANJSCHEDULE. THE PERAN T VEGETATION FOR THE PROPOSED DAM OBSERVATION AND / OR GLEANOUT F 'S SHALL BE PRODDED AT A MINIMUM ~ LOT BOUNDARY ( } f
BANKMENT SHALL BE BERMUDAGRASS. PLEASE NO THAT NO TREES,dSHRUBS OF OF ONE PER RY 1000 SQUARE FEET QF.~U:.FACE AREA. 0 LF PERFORATED
ANY E MAY BE PLANTED ON THE PROPOSED DAM EMBANKMENT (FlLL AREAS). ~ 3. PLACE 2" OF CHOKING STONE AND 4" OF WASHED SAND PER THE GROSS-SECTION ON / ~ ~ j 4~~~'167811tiPlAPII~
SHEET B-3. 6. PRIOR TO PLACING THE BIORETENTION AREA BAGKFILL MA fAl, THE CONTRACTOR PERMANENT BIORETENTION r /"d ~,r'°f f/,+ S N- 2 0,50X Ij I
SHALL REQUEST AN ON-SITE MEETING V~TH THE DESIGN ENGINEER AND THE EROSION SURFACE CO R SHALL BE ,f r r "t~ CAS®~ ~'°e
CONTROL INSPECTOR TO ENSURE THE UPSTREAM DRAINAGE AREA IS GOMPLE Y PLACE LAYER OF PLANTING SOIL (PER PLANTING SOIL SPEGIFIGATION) TOE ATION ~ E ~ M BERMUDAGRA S SEE ~ 432.75. PLAC ENT OF E SOIL IN THE BIQR TIQN AREA SHOULD BE IN LI OF ( STABILJZED (LE, GOOD VEGETATIVE COVER), IF THE CONTRACTOR DF IDES TO PLACE " ~ BIORETENITO AREA ,
THE BACKRLL FOR THE BIQRETENTfON AREA PRIOR TO APPROVAL I JM THE DESIGN 16 OR I SS AND LIGHTLY COMPACTED. j LANDSCAPE LAN ,
LINER AND THE EROSION CONTROL INSPECTOR TNEh` "71'° 1C°"7R SHA } f` ~ ° LL 5. PLAC_ ;UDA SOD P r' ~ ~ ~ /
CAVATE f R LACE, AS NEGESSARY, ANY BAGKFILL I::A'. ,IAL ' W DE® FOR THE (ER LANDSCAPE P SPECIFICATIONS) TO GRADE (ASSUMING SYS TQ FUNCTION PROP LY AT HIS ~ HER EXPENSE S'„JULD E BIORETENTION SOD IS 3 INCHES THICK - ELEVATION 433.00}, BERMUDA SOD MALL BE INSTALLED IN a / ti ~
ACCORDANCE NTH STANDARD SOD SPECICAT10N5 USING APPROVED IPM ~ J F'r AREA NOT FUNCITQN PROP LY (I.E. N1LL NOT DRAIN DUE TO SEDIMENT DEPOSITION} EqU ENT. ( " r ~ f' ? / J CLEAN- T ~G
DUE TO AN UNSTABILJZED UPSTREAM DRAINAGE AREA. I 10 LF 4 PER RA ,r 6° BIORET ~,aC SURFACE ARE ~ SHALL BE 1,797 SF {MINIMUM} AT EL 433.00. ~ A S N-12 0,50x f ' f ~ ~~PBt9pt6W~~~
/ 9° ANY EXPOSED EDGE/SIDE OF 1HE BIORElENT10N G SHALL BE SODDED AS SOON AS
POSSIBLE A R GONSTRUG110N !S COMP e~, L I ~ N-QUT \
10, ALL CONS UCIION OF THE BIOR NTION AREA SHALL BE PER TILE DETAILS AND 1 / ` ° INV 429.9 ~®1
SPECIFICATIONS SHO IN THESE DRAN~NGS. SOILS CO A 1. CONTRACTOR ALL MINIMIZE THE CQMPAGTTON OF BOTH THE BASE OF THE ~f MP CIION, K.Y TRENCH, AND BIORE 110N AREA AND THE REq~pRED BAGK~.L EN POSSIBLE, GONTRAGTQR ~ ,
OTHER MISG NEOUS DETAILS AND SPECIFlCAlIONS MAY BE O[ ` oD PER THE SHALL USE °;;CAVATION HOES TO ®110VE Tyr:. ORIGINAL SOIL. IF THE BIQR NT10N f RECOMMENDATIONS OF THE ONSITE GEOTECHNICAL ENGINEER. ..0':_.Ead, THE DESIGN ARE°, IS `/ATED USING A l~`A® THE '°tl''~~CTOR SHAH U WADE TRACK OR ? ~ o
ENGINEER SHALL BE NOTIFIED OF ANY DEDATION FROM THESE DESILV DRAtMNGS, MAF"'{ T , E~IUIPMENT, OR CUIP : WITH TURF E 11RES, COMPACTION G -OUT ' QUT ~ ~ ~
IF: JDING SHOP DRAN~NGS FOR ANY PROPOSED MODIFiCAT10N. AT P~F THE BIORETENTIGeV 4REA C `I A A I P 430.00` BE LLED TED BY US NG A BINARY \ 50.00` ~ ~
'eiLL, r ''0" °'i ,°S A ChISEI PLOW, RIPPER, OR SUBSOILER< THESE TILLING OPER <nON ~~IE TO "tGT11RE THE SOIL PROFl THROUGH 1HE 12 INCH 10 4" PEFORA
~r IL II , COMPACTIC°' ZONE< m UBSTITUTE M ODS MUST BE APPROVED BY THE ENGINEER. ` f i ADS -12 0.50
• ~ • ROTOR F°. DO NOT DEEP ENOUGH TO REDUCE THEE GTT's OF COMPACTION < 1. ALL FII 1 RIALS TO BE USED FOR THE DAM EMBANKMENT SHAU. BE TAKEN O 0 ,A
BORE ' ~ ~ °EA5 APPROVED BY THE ON-SITE GEOTECHNICAL ENGI FROM HEAVY EQUIPMENT, \ ` % r` , NEE ° THE FILL , MATERIAL SHALL BE FREE OM ROOTS, STUMPS, WOOD, STONES GREA 1HAN 6', 2. ROTOTILL 2 TO 3 INCHES OF S D INTO THE BA~~` OF THE BI E TIQN FACILITY ~ . l ~ ~ ` C' aUT
AND FROZEN OR OTHER OBJECTIONABLE MATERIAL THE FOLLOWING SOIL ES AF BEFORE BACKFILLJNG THE REQUIR GRAVEL LAY. ,PUMP ANY PONDED WATER BEFORE ~ ' ° r ' m 429.65
SUITABLE FOR USE AS FILL WITHIN THE DAM EMBANKMENT a ~ ~ KEY IRENCHt A'' D \ ~ ~ ~ ~ ;'4 ~ ~
CL IF OTHER SOIL ES ARE D RMINED TO BE SUITS E' E ON-SITE PREPARING (ROTOTTLLJNG) BASE, 21 4°~ F F ' ^a~ ~Po? GEOTECHNIGAL ENGINEER, DOCUMENTATION SHALL BE RETaelmv' ~ FAIR FUTURE AS-BUILT ~ A N- .71.: - ~ p " _ I 429.95 LF 4 P FORAYED r "9 t~ ~ A -12 0.71 X I
3. WH BACKFILLING THE BIQRETEN110N AREA, PLACE SOIL I LI 4F 12 INCHES TO 16 r~ ~ SUBMITTALS. INCHES. DO NOT USE HEAVY EQUIPMENT THIN THE BIORE TION AREA. HEAVY ~ v ~ i ~ t.~ ~ PERF AitD .
2, FILL PLACEMENT SHALL NOT EXCEED A MAXIMUM 6" LIFT UNGOMPACTED . EACH LIFT EQUIPMENT C BE USED AROUND THE PERIMETER TO SUPPLY SOILS AND SAND. 10-FT DRAINAGE , Af~_ I° 0.00
( ) GRADE BIORE ZION MA IALS WI1H LIGHT EQUIPMENT SUCH AS A COMPACT LOAD EASEMENT' ~ ' SHALL BE CONTINUOUS FOR THE ENURE LENGTH OF EMBANKMENT. BEFORE OR A DOZER OADE WITH MARSH TRACKS, 1 ~ ~ t¢ T
P~ ' . 'L:VT OF FILL FOR THE BERM SECTION, ALL UNSUITABLE MA IAL SH BE f ~ , ~ - ~ ; R®:d0' .D ~,ND THE SURFACE PROPERLY PREPARED FOR FILL PLACEMENT. • f' / , GLE ®OUT M a ~ ~ ~ 429+ Q ~ e ~ f ~ ~ e ~
_ I~ ~ INV ~ 429 95
3< ALL fl~l SOILS USED II: " P"'BANKMENT GONSIRUGTION SHALL BE COMPACTED TD ..If . ,:M t 1. THE PLANTING SOIL SHA INIFORM MIX, F°~a E OF STONES, STUMPS, ROOTS OR - ~ 1~ ~ ~
AT LEAST 95% OF THE ST, DARD PROCTOR MAXIMUM DRY DEN5ITY (ASTIs9®699), " t- t/` f AP ° SOI A COR _ AT A 01 R G I + ~ T O1HER SIMI OBJECT'S LAR~I;R THAN ONE- L. ,i IN DIA R. NO OTHF~ ~ ~ , FILL LS SH LL BE LD STTJ E ON T WITH N 1 TO 3 I Ek _ I MA PALS OR SUBSTANCES S:IALL BE IXEC~ Cr. ~UMPED WITHIN THE BIQREIENITON `J e`~a•
OF ITS OPTIMUM MOI5'`:F .OM1TENT. COMPACTION TE51T; SH BE PERFOR`,~ AREA THAT MAY BE HARMFUL TOP T 0 OR PROVE A HINDRANCE TO THE 44,E .00 ~ I
THE ON SITE GEOTECI;VI~e `NGINEER DURING CONSTRUCTION TO VERB TI7AT _ ~ . _ CHES ~ PROPER COMPACTION LEVEL HAS BEEN REACHED. THE FILL SHOULD 8E COPAC eD PLANTING MAINTENANCE OPERAEI S, ~ E PLANTING SOIL SHALL BE FREE OF r / ~ Sla. = 1 Hn ~ ~ ~ _ ~ 33 LF 15 0 4-RIN~ RCP ~ ~ ~Ia~ ~ ~ ~ (JOINTS MlRAPPED IN ~ W
USING A SHEEPSFOOT TYf E COMPACTOR. IN ORDER TO PREVENT DAMAGE TO TI of PIPE BERMUDA GRASS, JOHNS GRASS, gUAC ° BRASS, MUG RT, NUTSEDGE, POISON IVY, t ~ t ~ g ~ GEaYEXYILE FABRIC) Rt 4.65X p~ , ~t ~
' CAN.' ,ITS , QR OTHER NOXIOUS r~ ° 4 " ~ ~ NO COMPACTION EQUIPMENT SHALL CROSS ANY PIPE UNTIL MINIMUM CO IS e ' I 0 A ADS N®12 0._~ ~ ESTABLISHED ALONG THE PIPE. , LIE dry' LAS 'B% _
w ° C~NTRAC, TALL PRODDE A BIOF :NT1ON SOIL MIX U51NG THE N GL'° aUT - F A~S N-1 -
COMPONEN BELOW THAT N1LL MEET THE ASTM STANDARDS AS FQLLQ .-'r , 4, THE CONTRACTOR SHALL PRODDE THE ENGINEER WITH REPORTS TO IFY THAT THE / _ ~ '2" THIC MIN ~ I 1 430.10 DAM EMBANKMENT MEETS 7HE SPECIFIED GOMPAC110N REQUIRE""yTS. COMPACTION ~ _ ~ ® i
REPORTS VNLL BE NEEDED DURING THE AS-BUILT G T1F1CATTON .'ROCESS FOR THIS A, SANDY L~ )PSOIL - 35~ {VC B ~ I _ ~ ¢,r~F ; ~ ~ ~ 5" ENDWA PER , ~ NCDOT S 6.80
rn e~ B. COARSE SAND - 65X L°ND~ ' ~II R 2®, ' ~ PERFOR D STORWATER FACILITY. THEREFORE, IT SHALL BE THE CONK ~r R ~ RESPONSTBILIIY / AI>~ ~ ~ Q C, PERMEABILITY - 2,0 INES PER HOUR MINIMUM ~ .A , f f f (NSYEE DETAIL SHBE ®B-3)
{ ) / TO COORDINATE COMPACTION TESTING AND TO ENSURE COMrA~'9G,v TESTS ARE ~ / r' ~ PROPERLY PERFORMED DURING CONSTRUCTION. RAC' • 1' / _ '
NOTESe ~ F BR / / • CLAY PERCENTAGE SHALL NOT EXCEED - 6~ r"r G N-OUT r`
I I I ~ ~ INV = 42x.65 • SILT P CENTAGE SHA` :U~OT EXCEED - 12~ ff
• ALT AND CLAY PERG ~:E SHALL NOT EXCEED - 12~ ,I ,F 15 LF 4"~ _C-~~.ATE J - ~ ~ ~ 0 ff
1. THE 15"~ RCP OU BARREL SHALL BE CLASS III RCP, MODIFIED BELL AND SPIGOT, • PHOSPHOROUS IDL„ : ,L NOT EXCEED - 30 ~ ,rf / ADS N-t®,~ .<67.0 MEETING THE REQUIREMENTS OF ASTM G76-LATEST. THE PIPE SHALL HAVE CONFINED / ~ 453.50 a - ~i ~ 434 apPP °4~MU9A~ ~
0-RING RUBBER GASKET JOINTS MEETING ASTM G-443°LATEST< THE PIPE JOINTS 3< T`HE GON ACTOR SHALL TEffi. THE PLANTING SOIL PRIOR TO PLACEMENT TO ENSURE ~ ,f / / r`
SHALL BE E R-4. THE FQLLOVNNG CRITERIA IS MET: ~ / / ° 435 ,5®
~ ~ ~ 2, THE STRUCT"RAL DESIGN FOR THE 4'x4' IN NAL DIMENSIONS RIS BOX SHALL BE A• PH RANGE - 5.5 TO 6.5 ff, , v
( ) B. ORGANIC MA R ° 1,5X TO 5X ? -"'~f BY OTHERS. PRIOR TO QRDERING THE STRUCTURE, THE CONTRACTOR SHALL PRQDDE s
THE ENGINC . o.: _HOP DRAWINGS, SEALED BY AN P.E. REGISTER IN NOR1H G. MAGNESIUM - 35 /AG - ~ ° AR D. PHOSPHOROUS P205 - 100 LB AC ~ f' G OLIN.., . JR . ~ALN. ~ f'.~_..~ 435 4 LF 4"~ PE?F+' '
E• POTASSIUM K20 - 65 LB~AC ~ ~ d 4 ' ADS N-12 tP . ~ /
3. THE RISER BOX OUTLET STRUCTURE SHALL BE PRODDED WITH STEPS 16" ON CENTER. F, SOLUBLE SALTS NOT TO EXCEED 500 PPM l ~ "s f • STEPS SHALL BE PRODDED ON THE INNER WALL OF THE RISER BOX. STEPS SHALL BE GLEAN-OUT
,r IN ACCORDANCE WITH NCDOT STD. 640°66, PLEASE R R TO SHEET B-2 FOR 4. THE FOLLOWING LEST FREQUENCIES SHALL APPLY TO THE ABOVE SOIL CQNSIITUENTS: , i r INV - 429°95 433,- i CI'_ lUT r;. _ _ t32 iiv~ ®429.70 ,1
LOCA"ON OF THE RISER STEPS. ALL BIORETENTIQN AREAS SHALL HAVE A MINIMU'" OF ONE TEST PER 200 CUBIC ° , YARDS. EACH TEST SHALL CONSIST OF BOTH Th` STANDARD SOIL TEST F pH, i
4. TI"°. BOX JQINT DESIGN SHALL CQNFORM TO ASTM C-476, THE JOINTS SHALL BE PHOSPHORUS, AND POTASSIUM AND ADDITTONe ® ~ OF ORGANIC MA R, AND ~ ~ r F' ~ f a" ~ ~ ~r r''
SEAL _ C~,NG BU RUBBER SEALANT CONFORMING TO AS ®990. THE CONTRACTOR SOLUBLE SALTS. A TEXTURAL ANALY~S IS RE4_.::tt1 .ROM THE SITE STOCKPILED f r 10 LF A P .w RATED C N-~ D r° ~~,`I--QUT " '
SHAL' ,'ABLE JOINTS QN BOTH THE INSIDE AND OUTSIDE 'NTH NON-SHRINK GROUT, BIORETENIIQN SOIL ~ ~ i ! ADS N" ? a INV ~ 4 ! ~ r'i / ~ F f J ~ 43x.00 21 LF 4 PERFORA D 'RECA T R ADS N-12 0.71 ~ ir" ; `
~ 5. PRIOR TO ORD LNG, THE GONTRAGTQR SHALL SUBMIT TRASH RACK SHOP DRAGNNGS NOTE: ~ A ~ I IP 'L"o DIMENSIa~' ~ _ + ~ - ,:;i' COUNTY STREAM _,.~--TO ' ®F USER = ' ~ 75
~ T4 THE ENGINEER FOR BEDEW. CONTRACTOR SH ENSURE THAT AN ACCESS HATCH • SINCE DI RENT LABS CALIBRATE THEIR S11N 10111 J T DI ENTLY, ALL ~ / i ~r IS PRODDED ~MTHIN THE TRASH RACK SEE SHEET B-2 THAT 1~LL ALLOW FOR TESTING RESULTS :"-;.ILL COME FROM THE SARr,~ TE aING FAGCLiTY, SHOULD THE f ~ r i (2) INV~.°~Y 1N -12) BUFFER (EPHEMERAL) "
{ ) i' ~ FUTURE MAINTENANCE ACCESS. CONTRACTOR SHALL ALSO PRODDE A CHAIN AND LOCK PH FALL OUT OF T. ACCEPTABLE RANGE, IT MAY ~'E MODIFIED (HIGHER) VdITH ~ t f IN 4UT (15 s - N~ RCP -
FOR SECURING THE ACCESS HATCH. LIME OR {LQ F` V !ON SULFATE PLUS SU R. , ~ / 0" @`,~... ON ~ f' ~ , (SE 1ETAIL 6 2) r
. 6. ALL POURED CONCRETE ALL BE MINIMUM 3000 PSI (26 DAY} UNLESS QTNERY~SE I b'r I I ~ , 4<, 'T `.,T ~ r f,,;
NOTED. ~ ' r f ~ VELOC ®'SSIPATaR - NC~C, , m J° RIPRAP
7. GEOTEXTILE FABRIC FOR 1NE 15"~ 0' '~RREL JOINTS SHALL BE MIRAF1 160N OR ~ , TOP OF DA~ ~ ~F.. 7,5°L ; . g X 22" THICK f!`
I P TOPSC,~ U r MEET E TEXTURAL CLASS OF A SANDY LOAM (ACCORDING TO ~ ACCESS ( } ENG NEER A PROVED EQUAL NON-WQVL:. FABRIC } ~ THE SOIL ,m ,.1 .:MANGLE MEETING THE FQLL04WNG: t~DT T. d50 6"
3 rr l MAX. OPE / 5;t (H; V) ~;1 (H; V)~ ~ (SEE DETAIL SHEET B-3) ~
! SAND ° SC,. t0 7OX f i ® I I If - ~ SILT 0~ TO 50~ ,t
CLAY - 15x TO 209 ~ ~
THE GRAVEL LAYER SHALL MEET THE STANDARDS SET FORTH IN AASHTO°M- .3. THE r f I ~ GRA SHALL BE A POORLY GRADED MATERIAL 1MTH AN AVERAGE DIAMETER OF 0.25• 2° ~ 1a' Na-uILD sE IQ
TO 0.75", ~''a THE GRAIN SIZE DISTRIBUTION FOR THE CQARSE SAND IS AS FOLLQWS ASTT~ I (
G136-95A} m 2< 1HE WASHED SAND SHALL MEET REQUIREMENTS OF WASHED ASTM-G-33 FINE
~ AGGREGATE CONCRETE SAND. IN ADDITION TO THE ASTM-C-33 SPEGIFTGAlION, THE e~~+ ea~~ ~ „Nr
1. ti WASHED SAND MUST MEET THE FOLLOV~NG GONDITIONSa 3 ~ ~ , ® ~ h A L a
C I • SAND MUST MEET GRADATION REQUIREMENTS FOR AS -C-33 FINE AGGREGATE tO0
CONCRETE SAND. AASHTO i GRADATION IS ALSO ACCEPTABLE. E'"'®g7 BIQR N ~ • X16 60-60 ETE 110N SURFAC._^SHALL BE BERMUDAGRASS SOD INSTALLED I ACCORDANCE WITH . _
c SAND MUST BE SILICA BAS~M..,Q l1MESTONE BASED PRODUCTS MAY BE USED. IF 0 10_20 STANDARD SOD SPEGIFl AT10NS USING AF",dQVED EQUIPMENT. PLEASE NOTE THAT EN ~ THE MATERIAL IS ITE OR GRAY IN COLOR, IT IS PROBABLY NOT ACCEPTABLE< ;~50 5-15 ORDERING THE FESCUE SQD FOR THIS ..101..".. 1QN AREA, THE SITE CONTRACTOR SHALL
~ • SAND MUST BE GLEAN. NATURAL, UNWASHED SAND DEPOSITS MAY NOT BE USED, ENSURI ~'i~ M DI6 - i ® K _AV X100 0-5 _ °~~E _ I OR THE _EF DA_ ~S SOD IS A SAND MEDIA AND NOT CLAY
~ li EV~RSE, SAND 1HAT HAS BEGONE CON INATED BY IMPROPER STQRAGE OR Tn p PNFII:,< .0.® OF STi ~I. a~.,, RUI;J~`F INTO THE UNDERLYING BIORETENTION P INSTA 110N PRACTICES WILL BE REJEG~~`~ii. 50"
MANUFACTURED SAND QR STONE DUST IS ~Ji ACCEPTABLE UNDER ANY 3, THE CC.:..31 RE OF THESE TWO COMPONENT MEET THE FOLLQVANGo
o CIRCUMSTANCE. ~ Fy . ° WASh~.D SAND - 65X TO eex E ~e~ F ~ T
v ~u SILT AND CLAY - 6~ TQ 1 4< THE CHOKING STONE I A ALL BE WASHED OR WASHED 9 STONE LA R
MEETING THE REQUIREM' ~ , AS -G-33. ORGANIC MA R - 3X TO 5~ 1. TESTING OF THE NEW FILL M.,. SHALL BE F TFORMED TO IFY THAT THE RECOMMENDED L OF CO P' c~N IS AGHIE4 "URING CONSTRUCTION, 1HEREFORE, •
5° THE UNDERDRAIN PIPING F0~ THE BIORETENTION AREA SHALL BE 4" ADS N°12 PIPE. 4° MIXING OFF-SITE ONE DENSITY TEST SHALL Bf: Pt R°dED FQ" ' x,500 SQUARE FEET OF AREA
THE PIPE AND FITTINGS SHALL BE E °S' AND SHALL MEET THE REQUIREMENTS OF FOR .CRY LIFT QF FILL. A. MECHANIC.: ''_Y MIX E MATERIALS TQ PRODDE A UNIFORM DISTRIBUTION OF THE AASHTO M-252, THE 4"~ PERFfRAT-'®RPI"'E SHALL CONTAIN CIRCU PERFORAItONS CQMPUF 2. T®d ' ,4L BE RE IR ALO:II 1;~ 0-RING
OU T BARREL AT A FREQUENCY MEETING AASHTO GLASS II. THE PL. F_,<,',TIQNS SHALL BE • DIAMETER AT 6° ON OF C ST PER 25 LF 4F P - r ;R11GAL F00T OF FILL
~ CENTER MEETING PERFORATION PAT-:-N 'E' (fi AT 60®), B. INADEQUI., MOISTURE GQNIENT: DQ NOT WORK MEDIUM WREN MOISTURE
CON T IS LOW CH THAT DUST WILL FORM IN THE AIR, APPLY WA , IF P ~ _ it I ll~91C%$irali ~Y:
6. THE OBSERVATION ARE TO CONSIST QF 6-INCH DIAMETER SCHEDULE 40 PVC NECESSARY, TO BRING MEDIUM TO AN OPTIMUM MOISTURE CONTENT FOR
PIPE (OR EQUAL) WITH A CAP SET 6-INCHES ABOVE GROUND LEVEL THE PIPE SHALL COMPACTING AND PLANTING. ALL REQUIRED MAINTENANCE AND INSPECTIONS OF
THIS FACILITY SHALL BE THE ® HAVE A FACTORY ATTACH CAST IRON OR HIGH IMPACT PLASTIC COLLAR WITH RIBS RESPONSIBILITY OF THE PROPERTY OWNER'S ASSOCIATION PER THE EXECUTED OPERATION AS SHOft
TO PREVENT ROTATION EN REMOVING SCREW TOP LID. THE SCREW TOP LID SHALL C. DO NOT WORK MEDIUM EN THE MOISTURE CONTENT IS HIGH ENOUGH THAT BE CAST IRON OR HIGH IMPACT PLASTIC THAT WILL WITHSTAND ULTRAVIOLET RAYS. EXCESSIVE COMPACTION WILL OCCUR. AERATE MEDIUM UNTIL MOISTURE CONTENT AND MAINTENANCE AGREEMENT FOR THIS FACILITY. GRAPHIC SCALE
THE SCREW TOP LID SHALL BE A CLEANOUT WITH A LOCKING MECHANISM OR SPECIAL IS UNIFORMLY REDUCED AS NECESSARY TO ACHIEVE OPTIMUM COMPACTION. 10 0 5 20
BOLT TO DISCOURAGE VANDALISM. ..4 SHEET NO.
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4" J.. AC 1. UNDE:RDRAIN I . _ '0~.... , o °12 UNREROR.~' r -E ~ "-3} 11
PIPE "'m THE PIPE. C( ~ r tt{E c L °,OI fn- ~ia~ , {6 ~g
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6" THIG ~ S° -C,. 5" THICK EASE SECTION ,
i ONi r ~I , ~ `,,,1~~. CONTRACTOR SHA ~
ANY ` _ V°. 1~ ~ . ANY 1fOID SI'~.~ i ® .°g G HXt
~tn,~~ .saG.~rt r~n° „ ~ . ARC. r.rnwr_c~arsrwv r . CONTRACTOR SHAt t Ft5R6~ L
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r~ ~ THE EN"s ~ e THE PRaP! = J STEPS i V .rt~xk, t{a~€ ? t.. F ` iF SUCH STEPS. , , ~ ~ ~ _ _ ~ ~ t sa 1
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r°r °^I ° . 0 ~'8~~C2,. ~i _ r „ n ~ ~ ~
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PLAN ~IpE CREW TOP LID'S FINI'. .I .tAT'r~}N r~, G , H ~ ~
PLAN 'DI: ~ _ A, 9p PODING DEPTH f ;
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° ~ r."°ION _ °Tg~' ~ ~ _ I Gr- _ _ _ . ~ IOC n o Vj
6. ~ PIPE SE.,~ . _ T ' Ca
'r ~ --#f R!A aR ~ ~ ko° ~F i i F i ~ . ~ .ile?a?)
~ a _ i.,. _ t" z <np ~ e ~ e . ~ 21" f q~`44 CARp A''a~
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~ 6 ° ~ ~.T _ L i ~ ~ ~ N-•° ar FILL SCIL MA lAL . a.,:'.,: ~
_.~g _d ~ ~g~ ~ I__. ..l!__._4 ! ~ t ~ ( E SHEET 9-1 FOR
PLAN ~ PQLYPAOP°`' " ~ ,R b. ~ : -PLASTIC (7 MATERIAL a
° PLAN ~ a ~ ~ ABOVE pETAIL PROVIDEp AS SCHEMAI1C SCREW TOP . ' ON SPECIF1CATlONS} ~ ~ • e 4P ONLY ~ ~ i ~~t`•"'' ~ 4
`®~°~~®t~~ eVe`®t~tpq®®ws
~ ~ ' EACH OBSERVATION 4"lELL/CLEANOUT SHALL INCLUpE THE FD°'_~ Y~NGo
, EL. 43t"aa
~ 1, FOR AN UNDERGROUNp FLUSH MOUNTED OBSERVATION WEt !CLEANOUT® PRI t' , ON t I _ _ ,o TUBE MARE OF NON-CORROSIVE MATERIAL, SCHEDULE ~O OR EQUAL, AT LEAST ~CLEANCUT®P 1~DE A _ ,
{P~ 12_ I , ~ E IN ,laD ~ st ,aRr sEwER ~ANrsaLES. ~ e " FEET "1N6 MATH AN INSIDE DIAMETER OF AT LEAST 6 INCHES. DUAL, AT I °"EE - , ~ 2°
q ° ; ~:N A-A ~~~TION . I
;Q t ~1 2 BE SHALL NAVE A FACTORY ATTACHED CAST IRON OR HIGH I , • - - CL.L RIBS TO PREVENT ROTATfON EN REMO~ANG SCREW TOP Lave r°°' TAP LIL. _ SG, ,o
TOP I BE CAST IRON HI IMPACT PLASTiG THAT ~MLL WITHSTAN_ ° ~THSTAND
ULTRAVI®1 1 KAYS> yap
~ C AC ~ N.r.s.
EL. 429.6' _ a _ _ v ~ _ _ _ °r
, p ~ - ~ WASH SAND 4 ~,eA'._ IOKING STONE WASHEI 57 STONE OR P,.F
- ° . . ~ m ~ ~ , N.T.S> . (ASTM-C-33} I•-:~ _OUI~ -..,4 ~ 3 _9 WASHED GIP:' R I~PRGVED
SIZE ~ 0.02" TO a.O4p . PI: _ ~C-33} EgUI`r.

~ H ~ ~ s 1 ECAST EN LL A~ SE USED FAR THE FOLLIN°lIN4 ~ ~ ~ ~ ~ ~'P4 ~ G ~ ~ , ® ~ _ rya. P"" 838.33 AND R3S, 39, ti. -S ~ ~ ~
~ PRf®" ®EN' 4YITN WINGS AND PAY
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