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WPO201000058 Plan - Stormwater 2011-07-11
and V 091 1 2 ail I WHITE HALL ALBEMARLE, VIRGINIA VICINITY MAP WICKHAM TWO HOLDINGS LTD. 1730 Owensfield Drive Charlottesville, VA 22901 April 14, 2009 Sheet Index Sheet Number Sheet Title ESC -1 COVER SHEET ESC -2 EXISTING CONDITIONS ESC -3 PROPOSED DRAINAGE AREAS 1 ESC -4 PROPOSED DRAINAGE AREAS 2 ESC -5 STORM SEWER PROFILES AND DITCH CROSS SECTIONS 1 ESC -6 STORM SEWER PROFILES AND DITCH CROSS SECTIONS 2 ESC -7 ROAD AND SANITARY SEWER PROFILES 1 ESC -8 ROAD AND SANITARY SEWER PROFILES 2 ESC -9 FILTERRA DETAILS AND DRAINAGE COMPUTATIONS ESC -10 UNDERGROUND DETENTION NOTES AND DETAILS ESC -11 STORMWATER MANAGEMENT DRAINAGE AREAS ESC -12 STORMWATER MANAGEMENT PLAN ESC -13 EROSION AND SEDIMENT CONTROL NARRATIVE ESC -14 EROSION AND SEDIMENT C&'17 COL COMPUTATIONS 1 ESC -15 EROSION AND SEDIMENT CONTROL COMPUTATIONS 2 ESC -16 EROSION AND SEDIMEN T COIlTROL PLAN - PHASE 1 ESC -17 EROSION AND SEDIMENT CON'T,"13L PLAN - PHASE 2 ESC -18 EROSION AND SEDIMENT CONTROL ROL PLAN - PHASE 3 ESC -19 EROSION AND SEDIMENT Cr'1111'F"-"ROL PLAN DETAILS APPROVALS DEPARTMENT OF COMMUNITY DEVELOPMENT (PLANNER/ZONING) (ENGINEERING) (BUILDING OFFICIAL) (ARCHITECTURAL REVIEW BOARD) (FIRE OFFICIAL) (ALBEMARLE COUNTY SERVICE AUTHORITY) (VIRGINIA DEPARTMENT OF TRANSPOR TA TION) I certify that these final plans meet the requirements of the Albemarle County Zoning Ordinance, the Water Protection Ordinance, tSubdivision Ordinance, and the Design Standards Manual. Signature ' Date I' d 7 .© /1 >I !. 'l „ j1 OF 19 ►Nx v post, > No. f1,062 SCALE: 1" = 30 DATE: 09113110 DRAWN BY. FVP REVISIONS: 1, 02-14-11 — RESPOND TO COUNTY COMMENTS 2. 02128111 — ACSA COMMENTS 3. 03131111 — RESPOND TO COUNTY COMMENTS U 0 z ry W L� w � z z o LV z cr N 0 0 O Z Z> V w � U � Q J + ZD0w0000 o _ C/) zoo �' N rn S2 C'-'d O U °0 These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z �C a U O m �c ,w �Qa W z ,Hn ) < 1LU O � W z a 1 W J O Q = U LU J Q O U z �--� O 5 U U) C6 W PROJECT NO. loo SHEET NO. Esc -1 OF 19 OW U FUNK V PUHL 11.6 No, 406 6 SCALE: 1" = 30' DATE: 09113110 DRAWN BY: FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS L..J n � w � z U) z w o ZN 01 LLJ 0 O O z z w> _ C)g J�0w00 �oNa�� cc)o ��r\- w°��Q _ r) U °u� These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z �C J r U O J W z z LU (D o cn > H W Q Q z I- o C) V) W m U z o `` 0 z J z H < W J 1--1-4 r H-1 <p w U z p 5 U Cn 06 W PROJECT NO. 100 SHEET NO. ESC -2 OF 19 7AL1 T 4 �Ge 1-1 FRANK V. POOL a No. 40626 Id SCALE: 1" = 30 DATE: 09113110 DRAWN BY. FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS U C.7 z � Uj U) w z ONo LLJ N 0 w U J � ZD 0> O W 00 N o u n Z LLJ°'°Ln N (V) CL Otet- U 0 " — V d 4 These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z Q U(D o m c- w U) F-- Q Q Q w W (DQ < Q > w < oC w i J Q 2: z H � v) W m J z o Q o Q W w J o Qo CL o U p .S U V) 06 w PROJECT NO. loo SHEET NO. ESC -3 OF 19 10" CEDAR T ;' ', EDAR 4" CEDAR . 6EDAR, 120 6Vq,N FRANK V. POHL 5 NO. 40625 SCALE: 1" = 30' DATE: 09113110 DRAWN BY: FVP REVISIONS: 1, 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z Q V Z ry W U W 05- 1 CD m U)Z o W Z ' ^ v C, N W F - O O zg> w 0 (D � r,00 Q C) 2:> J O> Owcc) cc) zo` N o w T Lu J rn , < d N o o O nI 0Z �p m Cl) Q These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. PROJECT NO. 100 SHEET NO. ESC -4 OF 19 z Q U (D 05- 1 m Cy— N W F—< �...� E--� < Q W W (D � r,00 Q C) 2:> W < c� w T O J Q CL Q z 0 LU co J Q � z o Q o O z Q o W —� LU U) O Q O n _ O neo z �--� O U (f) 06 W PROJECT NO. 100 SHEET NO. ESC -4 OF 19 I T1 U) J U) - co J m Q mN CC] 00 O co I CO00 I p O I --o)0) 0) o) N 0) d' OC)n00N GiNLn0 C-) (C) a)rONc, O)pr)OOI- 0 -co CD (D_cOZ� r O HBO»> O ��`-0» U) U) V)V)�zz 2-5-UGE LINES N r 4„ <Oz G 00, O cc co. 630 I O 0 N 0 V) c0`-O'NN� I rO�cO STR,108 STR. 106 620..!. ._6 __ .4.8_................ . ................ 1.01% 8.72 L.F. 24in. RCP'' SL -1 !1.00% sL-1 24!n. RCP 610 600 DATUM ELEV 595.00 rn �- (0 co cD 10+00 I U) -.----rte N 100 YEAR WATER STR,1 I^ J p 18 ELEVA77ON 601.35 m 5 6-._ I00 L....._........ I 1.01 ON N OECD 10 YEAR WATER 30in F icp 1 ELEVATION 598.70 i OUTLET PROTECTION 116 M = V) RIPRAP W/ GEOTEXTILE FABRIC NCD V)V)--- N d d W1=7.5; W2=18.5; N L=16; D=1.5' <Oz - ON Olf)U70 O cc 14- _(0 0� I O��U7� O 0 N 0 V) c0`-O'NN� I rO�cO _ +�tOtOCD� �C+VNCp� 630 -T8n RCP 2:1'_. _._.,._.._. f � [ �CDzzzO O OZO =V? m <0 �QO» Zz SL O = ��zzzz U) U) N� DATUM ELEV �Q0> V)U)I-zz 620.00 r Pr? O0 N rn r o r�i 0 O N 0 tnU)f-Zz _ ......._ _._........._...._ _ ...... \ 10+00 I rn Q c0 11+00 W COZ0 0 ZZ CJS m 0-(0 O V)yJ 22 MF__ZZ >..>. \ \ z E F- o NO Q � F__ „IR 11+00 STR109 00 NCN co (NO CO 12+00 13+00 13+58.99 - STR101A VER11CAL GRAPHIC SCALE 5 0 2.5 50 10 20 ( IN FEET } 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 50 0 25 50 100 200 ( IN FEET ) 1 inch = 50 ft -.----rte N 100 YEAR WATER STR,1 J p 18 ELEVA77ON 601.35 m 5 6-._ I00 L....._........ SL -1 1.01 ON N OECD 10 YEAR WATER 30in F icp 1 ELEVATION 598.70 Cp OUTLET PROTECTION 0 0 VDOT CLASS I EC -1 �<<a > I-I-O RIPRAP W/ GEOTEXTILE FABRIC N r7 �Mr(D V)V)--- UNDERLAYMENT d d W1=7.5; W2=18.5; N L=16; D=1.5' VER11CAL GRAPHIC SCALE 5 0 2.5 50 10 20 ( IN FEET } 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 50 0 25 50 100 200 ( IN FEET ) 1 inch = 50 ft i` 2.4' 630 STR�166 29.2 L.F. 2. 1 15in. RCP DATUM ELEV 6i'25.00 tet- .r 6 CO � 10+00 STR167 - STR147 V) O 10 J J ^ d U CO N 0 M N O 0dN O r N _ 0 rd I 0Lr) U)O O M N Lq ) � Ln 0 Ln 0 U) 0-) r -t 4 +NcD NrNU7 to �NN(0 �p?n r) nQ0 U-) C,4 0c0� 0�(00 O-(0�rL°zzZQ (Ya0> < CL >> moa»» z F-1-0 F- O Z 0-�_zZZZ Q F- 630 ....__ . _ _._..._.. _ 2.1 ' I E1 STR.1[ 4 21.51 '',L.F. STR.162 2.00% 54.74 L.F. 15in. RCP 1.6 % 15in. ERCP 620 �._._.._.......................... . i 1 DATUM ELEV 615.00 LC) 00 N 0) N d - CD CO 10+00 STR165 - STR105 650 " WL 640 li7.V9lIAFTA 630.00 Cd N N J J N c0 m I 00 c0 q I00 O d G I �N d ON N OECD arra NLf, 0iGi Cp N N 0 0 ZZO �<<a > I-I-O �<tnL- F-Hq»> 640��~Z N r7 �Mr(D V)V)--- i` 2.4' 630 STR�166 29.2 L.F. 2. 1 15in. RCP DATUM ELEV 6i'25.00 tet- .r 6 CO � 10+00 STR167 - STR147 V) O 10 J J ^ d U CO N 0 M N O 0dN O r N _ 0 rd I 0Lr) U)O O M N Lq ) � Ln 0 Ln 0 U) 0-) r -t 4 +NcD NrNU7 to �NN(0 �p?n r) nQ0 U-) C,4 0c0� 0�(00 O-(0�rL°zzZQ (Ya0> < CL >> moa»» z F-1-0 F- O Z 0-�_zZZZ Q F- 630 ....__ . _ _._..._.. _ 2.1 ' I E1 STR.1[ 4 21.51 '',L.F. STR.162 2.00% 54.74 L.F. 15in. RCP 1.6 % 15in. ERCP 620 �._._.._.......................... . i 1 DATUM ELEV 615.00 LC) 00 N 0) N d - CD CO 10+00 STR165 - STR105 650 " WL 640 li7.V9lIAFTA 630.00 Cd 10+00 STR1215 - STR 640 630 DATUM ELEV 650 am 630 DATUM ELEV 620.00 O L0 JJ U) O cD _ J J J 11 N N m MN O N I �N I NN N O O N N p N 00 00 LO c0 N Ln cD 0o c0 O N r7 �Mr(D Osco ,`D,�C°r �r- o+�� r 0 No��i- z� N�cOzO <Oz Q>> O HIS -0>? z C/)F U) Cf) zZ U)U)� 640 O LOP �� 8" WL 10+00 STR1215 - STR 640 630 DATUM ELEV 650 am 630 DATUM ELEV 620.00 O L0 JJ U) STR.126 N 28.50 L.F. 620 - ..........1.00% CO J 15in. RCP 00 N ¢ C14 J 00 �t- n 000 m NNLn co OCNN 000 Ln LO �O�z� 0CY) Off~ r O O N NN ..{0.. .......} 0)�;,D�� c6 co Z U)H- �N Z Z O STR127 - + 1-00 640 i U) 1—zzz I z Cd H n � r -Ln O 631.75 630 1 SL -1 STR.12$ SL 28.42 L. r. 1.02% 135in. RCP ! 1 620 i DATUM ELEV 1 615.00 0 00 12 co N I") 10+00 "'T R 12 9 - ST, 119 N C 7 N I co co N O N r I 0 0 `-�Q0 O rM -4 . r00 C14 N 0 0X0 N 0) NrD (0 zz �Q�� [if c~n(nn0z U)U)zzz 630 F -- a MH10 - MH9 WL 627.82 1.5' IN i i i Q w STR.126 N 28.50 L.F. 620 - ..........1.00% n CD CD 15in. RCP SEWER/WA TER/S rORM 1 PIPE CROSSINGS Lo 0) J DATUM ELEV O : Cd N m 615.00 O NCO m + Cp N N �O�z� N - O Q �� �QOZ> _ r Oro 10+00 Lr)N (0 STR127 - STR115 Q w " WL25 F 2.0' -__ __. STR.160 4.1 33.42 L.F. STR.158 --� E 1 59% 51;21 L.F. STF.156 E j 640 15in-.---RCP - x.41%_ -242 2 --LF 15in. RCP 1,179% 62.6 L.F. I 15irj. RCP T E 151h. RCP k t i DATUM ELEV 3 635.00 00 N Q 00 00 Ln Ln L0 U � Q0 rn �t- c�D 10+00 11+00 STR161 - STR153 STR145 STR105 LEGEND PROPOSED C/L GRADE EXISTING C/L GRADE 10+00 640 63C DATUM ELEV 620.00 620.00 O L0 0i CD CO r1r) M CO CD CD 10+00 11+00 STA. 14+50 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 0011 I N J U) r) n n CD CD N N It II I �Lo II 00 Lo 0) J I O : Cd N m LO O NCO m + Cp N N �O�z� O - O Q �� �QOZ> _ r Oro 04 04 Lr)N (0 c0 r- 640 (0 - ---- +.LO N ' J ._........_ �O�z© I z Cd >> n � r -Ln O LOP �� 8" WL U)V)`zz � 4 E E � E M E � E E k STIR. - LO tS)� r� 0) I+j 75.47 L. F. 00 M C) -,4-,0- I� 1.00% 630 -T8n RCP 2:1'_. _._.,._.._. f � [ ern-) rnQLn� D - t 3 1 E E E STR.142 0 C -j " Lo+LO 8"L 89.44 L.F. � QL()Ln0) 625.43 3 2.00% ` 18in. RCP n -COZ® CONC. 4�ci CN CACD CRADLE; (TYP.) DATUM ELEV �Q0> V)U)I-zz 620.00 coo rn r o r�i Lri c8 ro tnU)f-Zz _ ......._ _._........._...._ _ ...... � I-�c¢Of- _._._ _ 10+00 11+00 " WL25 F 2.0' -__ __. STR.160 4.1 33.42 L.F. STR.158 --� E 1 59% 51;21 L.F. STF.156 E j 640 15in-.---RCP - x.41%_ -242 2 --LF 15in. RCP 1,179% 62.6 L.F. I 15irj. RCP T E 151h. RCP k t i DATUM ELEV 3 635.00 00 N Q 00 00 Ln Ln L0 U � Q0 rn �t- c�D 10+00 11+00 STR161 - STR153 STR145 STR105 LEGEND PROPOSED C/L GRADE EXISTING C/L GRADE 10+00 640 63C DATUM ELEV 620.00 620.00 O L0 0i CD CO r1r) M CO CD CD 10+00 11+00 STA. 14+50 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 Lq N N r) n n CD CD CO II II 00 17 I cta J J II J O J N N (D coI 04 04 CO c0 Ed N LO OC)Ln I z Cd 1 0) n � r -Ln o LO LOP �� Cn M 0 r� 0LO11- 0 0 (0 - LO tS)� r� 0) I+j � n N(DN 00 00 M C) -,4-,0- I� m N N I n a p� CD O �__ 0Q?Ln O® ern-) rnQLn� D - rQ+"d (0 0 C -j " Lo+LO LO O roe � QL()Ln0) `� n�CCiz® ��CDZO n -COZ® O�O�pCO 4�ci CN CACD �14-OZ (nV)I-- �Q0 V)0 z:z �Q0> V)U)I-zz �Q�» coo Lc)+ff) CO ................._.............. _._._._...._..._.:...............__....... _..........._.._..._ __....._....__._........_....__._._.... tnU)f-Zz _ ......._ _._........._...._ _ ...... � I-�c¢Of- _._._ _ Oto `DzzzO W COZ0 0 ZZ CJS m z V)yJ 22 MF__ZZ \ \ z E -,_ Q � E E 1 � H = H LL O 4 650 E 10" WL � � 1 � z w 10" WL LU " WL25 F 2.0' -__ __. STR.160 4.1 33.42 L.F. STR.158 --� E 1 59% 51;21 L.F. STF.156 E j 640 15in-.---RCP - x.41%_ -242 2 --LF 15in. RCP 1,179% 62.6 L.F. I 15irj. RCP T E 151h. RCP k t i DATUM ELEV 3 635.00 00 N Q 00 00 Ln Ln L0 U � Q0 rn �t- c�D 10+00 11+00 STR161 - STR153 STR145 STR105 LEGEND PROPOSED C/L GRADE EXISTING C/L GRADE 10+00 640 63C DATUM ELEV 620.00 620.00 O L0 0i CD CO r1r) M CO CD CD 10+00 11+00 STA. 14+50 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 STA. 1 640 630 DATUM ELEV 620.00 17 00 00 CO CO 11+00 10+00 5+00 STA. 1 11+00 5+50 63C DATUM ELEV 6210.00 10+00 STA, 1 11+00 6+00 630 DATUM ELEV 630 DATUM ELEV 620.00 1 1 1 620.00 r Lq r LnLn O r) n n CD CD CO STA. 1 640 630 DATUM ELEV 620.00 17 00 00 CO CO 11+00 10+00 5+00 STA. 1 11+00 5+50 63C DATUM ELEV 6210.00 10+00 STA, 1 11+00 6+00 630 DATUM ELEV 630 DATUM ELEV 620.00 1 1 1 620.00 r Q O O r r N d r- O 17 M N) f r) Ir O (0 CO CD O CO 10+00 11+00 10+00 STA. 16+50 STA. 1 DITCH 1 CROSS SECTIONS ALONG ROUTE 240 11+00 7+00 0 rV 6 V POHL > NO.40626 SCALE; 1 " = 30' DATE: 09113110 DRAWN BY: FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS V z Q Vnoo O w _Z L� w U 0 z w Cn W z W o Z w N LU 0 � O Z �> u bo Uw C J U LU _10> O ILnu 00 00 p N > Ln U T ■i O ��"oLn L Q - nM O oz M d These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. PROJECT NO. 100 SHEET NO. ESC -5 OF 19 z Q O U (D U 0 5 w Cn W w /Ln V / ' �--- O H ~ z U LU U" ) > ne -U =O_ W CJS m z O z Q w Q = J � H = H LL O T � � � z w S LU U t!) V J 0 LU O PROJECT NO. 100 SHEET NO. ESC -5 OF 19 �00 O Ln d• C) (y r7 J. O on I-, .t r• P K f I r1nYd' r -N N 00� O • � OppN� nto (0 to d nMN CO M N ro r7N co r7 �M 04 O� 0N0Di - r�1� O Pr)(D (o d- (.o t0 t0 (0 N rn d u7 cMo 0 30+00 29+00 LO LO 00 28+00 > m 27+00 650 640 630 o DATUM ELEV 615.00 i O Ln d• C) (y r7 J. O on I-, .t r• P K f I r1nYd' LO i� di • �r O N nto (0 to N7 nMN CO M N ro r7N co r7 N Nr M O n r M r7 � LO _O <�»> 0Zzz (0 (0 (0 (0 t0 t0 (0 N rn d u7 26+00 0 t0 25+00 LO 9+00 10+00 11+00 12-00 13+00 MH3D - MHEX A X V) W X IW o� rn�(0 N `° z o �zz 7 L. F. 50% . DIP 650 DA TO 6,c 10+00 11+00 MH7A - MH7 5 HIGH POINT ELEV = 652.69 PVI STA = 16+87.15 HIGH POINT STA = 13+63.18 50 PVI ELEV = 639.33 PVI STA = 15+54.58 PVI STA = 13+16.96 L A.D. = 5.33 PVI ELEV' = 647.74 PVI ELEV = 655.17 �■ f K = 26.27 I A.D. _ -2.93 A.D. _ -10.91 K = 20.62 WX 140.0000' VC K = 31.47 LO 225.0000' VC CD 92.2200' VC -}- PLACE +,.;1-0to r-, (D N r O LC) O0) Ci)� 0) O� LO N� rte UiUi Cq r7N �►� M N� 6� rsjtf) (off (D POtoo co (0 rn (00 co w cD (0 O (0 IN 24+00 bo 23+00 '� 22+00 l.L .._._......____.______. -- ---------_ ------- -------- --------------- N N I 00"o w d Ic� CDI W y r/� V (0iLo �TI I- O I\ I\,N �L LO i CO 6N CN (�V J µj� ) rIONCf-D 3� I I++I�r-zQ=�1i0� I �--� o C0 Z pI�� Imo( O » i> ' Q 1 LJ /���i� i o>> V i .._.._ .. _ ..._..... ...._._.._"�.., r .._...... I , � i L l I t 11 u/Q W I 'I 0n I d 4°(b(-P C:) r7 � Z I 0) d0 N J r� NO�tco r�7(.40 / L. ' i V 'Ofi N +4f- �N(DZO v r7 r7 _> / zz I / / ' -1.00% I WA T. SER. , / 'LOT 103/ I LOT 99 LbT 98 AT. SSB / LOT 144 �L T. SER. LAT. SER. L -0T 14 1 3 WA T. SER. 1 LOT 100 LOT i 5 LINES ER ��aT icor j�WAT. ,ER. !l ST WA 15ER. hST148261.17;2:_ 1 ' .,.`--- -t------------__.........i....................._...._.__.__._.__....._.__"_____ ._. .__.._........_......_.........._..._.__...__._..___.�_----.t.._._..._._._._._. 111i8.83 3 i i I r 1 j .25% SAN LAT. T 1 Bin RCP 1 LIT 101 S 6 I SAN LAT. .SAN LAT. WTI LAT. LOT 144 i SAN LAT SN LA ?,1 SAN LAT. 1 i 96.40 L F ----- h SAN LAT. 0.557, i T 141 SAN LAT. 102.10 iL F. 5.1 8in. DIP i 0.55 WL -SL SAN LAT. 8in. DIP CROSSING STR.144 627.71 POUR--CONORE-TE--ER-ADdE----- - UNDER STORM PIPE ONIEACH SIDE OF SEWER CROSSING WICKHAM PLAC U 00 F- W („ O C/) XW se Xas 00 "* = W Cn .-1 , C j O W 1 0)N �r D OI ¢= o N<n O 00"t = 0 0C� CN NN 660 O._00_.cn._._._._ _.__._._...._.. ! Ind dN COCO N�(D0 ,-00ZZ� =Qp> _O <�»> 0Zzz �U)F-- -0 650 DA TO 6,c 10+00 11+00 MH7A - MH7 5 HIGH POINT ELEV = 652.69 PVI STA = 16+87.15 HIGH POINT STA = 13+63.18 50 PVI ELEV = 639.33 PVI STA = 15+54.58 PVI STA = 13+16.96 L A.D. = 5.33 PVI ELEV' = 647.74 PVI ELEV = 655.17 �■ f K = 26.27 I A.D. _ -2.93 A.D. _ -10.91 K = 20.62 WX 140.0000' VC K = 31.47 LO 225.0000' VC CD 92.2200' VC -}- PLACE +,.;1-0to r-, (D N r O LC) O0) Ci)� 0) O� LO N� rte UiUi Cq r7N �►� M N� 6� rsjtf) (off (D POtoo co (0 rn (00 co w cD (0 O (0 IN 24+00 bo 23+00 '� 22+00 l.L .._._......____.______. -- ---------_ ------- -------- --------------- N N I 00"o w d Ic� CDI W y r/� V (0iLo �TI I- O I\ I\,N �L LO i CO 6N CN (�V J µj� ) rIONCf-D 3� I I++I�r-zQ=�1i0� I �--� o C0 Z pI�� Imo( O » i> ' Q 1 LJ /���i� i o>> V i .._.._ .. _ ..._..... ...._._.._"�.., r .._...... I , � i L l I t 11 u/Q W I 'I 0n I d 4°(b(-P C:) r7 � Z I 0) d0 N J r� NO�tco r�7(.40 / L. ' i V 'Ofi N +4f- �N(DZO v r7 r7 _> / zz I / / ' -1.00% I WA T. SER. , / 'LOT 103/ I LOT 99 LbT 98 AT. SSB / LOT 144 �L T. SER. LAT. SER. L -0T 14 1 3 WA T. SER. 1 LOT 100 LOT i 5 LINES ER ��aT icor j�WAT. ,ER. !l ST WA 15ER. hST148261.17;2:_ 1 ' .,.`--- -t------------__.........i....................._...._.__.__._.__....._.__"_____ ._. .__.._........_......_.........._..._.__...__._..___.�_----.t.._._..._._._._._. 111i8.83 3 i i I r 1 j .25% SAN LAT. T 1 Bin RCP 1 LIT 101 S 6 I SAN LAT. .SAN LAT. WTI LAT. LOT 144 i SAN LAT SN LA ?,1 SAN LAT. 1 i 96.40 L F ----- h SAN LAT. 0.557, i T 141 SAN LAT. 102.10 iL F. 5.1 8in. DIP i 0.55 WL -SL SAN LAT. 8in. DIP CROSSING STR.144 627.71 POUR--CONORE-TE--ER-ADdE----- - UNDER STORM PIPE ONIEACH SIDE OF SEWER CROSSING WICKHAM PLAC � O �00N N N O 0000In L6 L6 N c',1 Z Z O zzz VERTICAL GRAPHIC SCALE 0 2.5 50 10 ( IN FEET ) 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 0 25 50 100 ( IN FEET ) 1 inch = 50 ft. PVI STA = 11+28.62 PVI ELEV = 641.03 A.D. = 5.51 K = 2(6.00 143.0000' VC ••i 0) I- CJI >+U)co� ,/ ��� N rn U LR �¢a o �4' w ���z� I ��r / I ��� + C) � I r CoV)f- z =� f -f -o>> 3.0 ' -r Y to (n ,� lR RELEASE \ (! I! : r7V NU Q _ :, J�•�0 0 MIN. VALVE " V) W > 3 I I U = i I 3 i i i I /.. Q 3 i I 3 I i I I'7 W //� -L � 650 '" I 3 �� �. ® V J� 5 o Q os N I 1 52 o X4" TEE I \ a a- r/y- N 10 "X8" REDUG R PSS C 4 GATE VALVE C-4 NROM, AC TAPPING f- I LOT' 4 �� i '4" PLUG i �SINS TALL�CONCRE7E SLEEVE AND VALVE' ro t°zz SER. 1.5 MIN. 3 �, o CRA ES OR 'APPROVED - - - 0 2" COP ER S P __ __.... --- -- ----- _.... - - NG\S . OR T . t __ M _ ,-- _;___. _ _._.. � _.... __.__.... _._ ____ .............EQL(AL FOR _C Ll j > > 6 SERVIC4S W/2'" i SEW PIP ON TRANSI TE PIPE WITH j O z z z 10'X10" CROSS I GATE VALVE (TYP.) : E EACH O � A 1-4-5/16" OD 2-10" GV, RCP 1.65% i v V •i t 145 153.35 L. F.1 j 0.55% -----I- in-, DIP -41--- -- n --DIP---t--- LEGEND -- STIP. 154 i 2.5' 147 STOR'MISEWER SER. PIPE C�OSSIN( STR.152 50 4L.F. 0.82 L.F ......._._..._� �- 2.01 _ 9 2 p0% 5in. RCP 3.1 1; 5in RCP 'PROPOSED C/L GRADE - ? - EXISTING C/L GRADE � I EXISTING GRADE 27' RIGHT OF C) i - - - -- - - - EXISTING GRADE 27' LEFT OF C/L WICKHAM PLACE 25 MPH DESIGN SPEED TSTA,. 10+00 70 15 � 16.11 I I 20 IDPH DE'5IGN SPEED i � 3 STA. -_1.5 + _16, _11 __- __ _ _E_N_D Y ,p 85.72 1 ' . WATER MA 1. �- l 12"X10" TAPPING � ! SLEEVE AND q0%. , �- 1 VALVE EX. gin. PVC 1-10"cv 3 _ __._._._......... .; _ _.___._._ L_. __ .._. _. 640 __-. STIR 50 - - 009'- 10"X4" TEE 635.77 4" GATE VALVE 0' 4" PLUG MIN. 1 3 I 2" COPPER' COM!,LETE SERVICES Pt/2" FIRE /-HYDRANT 1 5�" CCD A D A TI(1A1 JACK A{ D BORE UNDER ROAD WA Y WITH 24" CASING TEST PIT WATERLINE FOR L06ATION AND DEPTH OF EXIS77NG WA TERbNE FOR CONNEgTION EX. 12'1 TRANSI TE WATERLINE OWNED BY RWq•A. PROVIDE 3 BUSINESS DAYS NOTICE I TO RWSA PRIOR TO MAKING CONNECTION. Q d• 00 r�7 d W („ O d 00 "* O j 0) 'I - 00 N O 00 n N 00 � O N I co (U (� pp O (D , Lo O -0 ` N n '0- -t O N rn d u7 0 0 t0 Cn tb LO LO 00 �n M > m t� r7 rn r r7 d 00 O CA rn M N O M O (fl (U ao IC) Ln CA rn rrj d N W O O r� O 7 N 00 N o n z O '0 o r`00 In rrj (D O d 0 V U �/� V l U N > U m n (0 ^ are the exclusive rn �d0 d n (0 Ln am- II > > J W Wto by any means in whole or in m If)� N 0o 0)� ao r') = r7 (YD W� InN �nOi 00 LO + 06 �N - ¢O m d O rN cDr7 c0r� cD►�7 +U-) )rn<0 W -1 cpm r t0 c�odN dM N d �0 4- c�p� I- LO (D V) co - O -O OLO (o to u) (D LO U) 0 d- (o d cD d- qd- (014- + (o M c0 �=rcoQZ p%) , LJ < LnQ O (0 (0 o (0 (0 (0 � (0 n _ (0 (0 ZZ w U > =0 O 0 0 Inn L� �7 o O 00 Lo (0 WW (o O (0 (0 LQ 7I0 Q (0 (0 (0 0-tNN-tWD 00 d r)N co r7 +M � 0''N� ZO� Q 1 0(0 N0 d +O,_ . d W � JN W ra 1 00 (DIof O a N =O LLJ ZD dN I O� � O F --Qi jI (n C/)-�- - LO> a_ -2nl-zzz WZI >>> 31 Q i m� i i 00cDr7 � Wc0i C14 /j d Ll `^ 00 (o I • � YU U - ?--- 1 _-- - }- I � O �00N N N O 0000In L6 L6 N c',1 Z Z O zzz VERTICAL GRAPHIC SCALE 0 2.5 50 10 ( IN FEET ) 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 0 25 50 100 ( IN FEET ) 1 inch = 50 ft. PVI STA = 11+28.62 PVI ELEV = 641.03 A.D. = 5.51 K = 2(6.00 143.0000' VC ••i 0) I- CJI >+U)co� ,/ ��� N rn U LR �¢a o �4' w ���z� I ��r / I ��� + C) � I r CoV)f- z =� f -f -o>> 3.0 ' -r Y to (n ,� lR RELEASE \ (! I! : r7V NU Q _ :, J�•�0 0 MIN. VALVE " V) W > 3 I I U = i I 3 i i i I /.. Q 3 i I 3 I i I I'7 W //� -L � 650 '" I 3 �� �. ® V J� 5 o Q os N I 1 52 o X4" TEE I \ a a- r/y- N 10 "X8" REDUG R PSS C 4 GATE VALVE C-4 NROM, AC TAPPING f- I LOT' 4 �� i '4" PLUG i �SINS TALL�CONCRE7E SLEEVE AND VALVE' ro t°zz SER. 1.5 MIN. 3 �, o CRA ES OR 'APPROVED - - - 0 2" COP ER S P __ __.... --- -- ----- _.... - - NG\S . OR T . t __ M _ ,-- _;___. _ _._.. � _.... __.__.... _._ ____ .............EQL(AL FOR _C Ll j > > 6 SERVIC4S W/2'" i SEW PIP ON TRANSI TE PIPE WITH j O z z z 10'X10" CROSS I GATE VALVE (TYP.) : E EACH O � A 1-4-5/16" OD 2-10" GV, RCP 1.65% i v V •i t 145 153.35 L. F.1 j 0.55% -----I- in-, DIP -41--- -- n --DIP---t--- LEGEND -- STIP. 154 i 2.5' 147 STOR'MISEWER SER. PIPE C�OSSIN( STR.152 50 4L.F. 0.82 L.F ......._._..._� �- 2.01 _ 9 2 p0% 5in. RCP 3.1 1; 5in RCP 'PROPOSED C/L GRADE - ? - EXISTING C/L GRADE � I EXISTING GRADE 27' RIGHT OF C) i - - - -- - - - EXISTING GRADE 27' LEFT OF C/L WICKHAM PLACE 25 MPH DESIGN SPEED TSTA,. 10+00 70 15 � 16.11 I I 20 IDPH DE'5IGN SPEED i � 3 STA. -_1.5 + _16, _11 __- __ _ _E_N_D Y ,p 85.72 1 ' . WATER MA 1. �- l 12"X10" TAPPING � ! SLEEVE AND q0%. , �- 1 VALVE EX. gin. PVC 1-10"cv 3 _ __._._._......... .; _ _.___._._ L_. __ .._. _. 640 __-. STIR 50 - - 009'- 10"X4" TEE 635.77 4" GATE VALVE 0' 4" PLUG MIN. 1 3 I 2" COPPER' COM!,LETE SERVICES Pt/2" FIRE /-HYDRANT 1 5�" CCD A D A TI(1A1 JACK A{ D BORE UNDER ROAD WA Y WITH 24" CASING TEST PIT WATERLINE FOR L06ATION AND DEPTH OF EXIS77NG WA TERbNE FOR CONNEgTION EX. 12'1 TRANSI TE WATERLINE OWNED BY RWq•A. PROVIDE 3 BUSINESS DAYS NOTICE I TO RWSA PRIOR TO MAKING CONNECTION. 21+00 20+00 19+00 18+00 17+00 16+00 15+00 14+00 13+00 12+00 11+00 630 620 610 I DATUM ELEV 600.00 O r- co � ileIIeIl7 s vul V. Pam > No. 40626 �Q SCALE; 1" = 30' DATE; 09113110 DRAWN BY: FVP REVISIONS: 1, 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS Q d• 00 r�7 d r7 d 00 "* I� d , 00 N O 00 n N 00 � O N d- co (U (� pp O (D , n k O -0 O N n '0- -t O N rn d u7 0 0 t0 Cn tb LO LO 00 �n M Ln 00 t� r7 rn Ln r7 d 00 O CA rn M N O M O (fl (U ao IC) r7 r� CA rn rrj d N Irj o0 O O r� O 7 N 00 N o n z O '0 o r`00 In rrj (D O d Q �/� V l U °U �►� �� documents are the exclusive rn �d0 d and may Ln am- J by any means in whole or in < If)� N Lo C-4 r') t17�`M cV InN �nOi 00 Ln (0 d �N - ¢O d O r�3 cDr7 c0r� cD►�7 c�p� cpm c�odN dM (0 (0 d c�DdO 4- c�p� cdo� (D V) U) O to W) (o to u) (D LO U) 0 d- (o d cD d- qd- (014- M (o M c0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 (0 co (0 (0 t0 (0 (0 (o O (0 (0 (0 (0 (O (0 (0 (0 O 21+00 20+00 19+00 18+00 17+00 16+00 15+00 14+00 13+00 12+00 11+00 630 620 610 I DATUM ELEV 600.00 O r- co � ileIIeIl7 s vul V. Pam > No. 40626 �Q SCALE; 1" = 30' DATE; 09113110 DRAWN BY: FVP REVISIONS: 1, 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS PROJECT NO. 100 SHEET NO. ESC -7 OF 19 U Q J I� 20 zW ry G U ~ W ,-4 0 Z_ V) I V LUW � z o W W CN N 0 200V < z > U W z w tDO U � o J -� Q J O > C) - O0'' oo co I -- ■i C,0 z O '0 o Q Q �/� V l U °U These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced J by any means in whole or in < part and shall not be assigned to any third party � without the express written consent of POHL CONSULTING. PROJECT NO. 100 SHEET NO. ESC -7 OF 19 z Q J I� H L- G U (D ,-4 0 V) I LUW � I..L W IJ -1 U- O 1-� �--� < Q W z I..L LU Q LLJQ Q �/� V l LU m J 11 Q J LU _ < p z Q � ~ D U z Q �U O O ryo V J C W W PROJECT NO. 100 SHEET NO. ESC -7 OF 19 l��� "t t Filterra Standard Plan Notes fi [te fra Construction & Installation A. Each unit shall be constructed at the locations and elevations according to the sizes shown on the approved drawings. Any modifications to the elevation or locatioin shall be at the direction of and approved by the Engineer. B. If the Filterra' is stored before installation, the top slab must be placed on the box using the 2x1 wood provided; to prevent any contamination from the site. All internal fittings supplied (if any), must be left in place as per the delivery. C. The unit shall be placed on a compacted sub -grade with a minimum 6 -inch gravel base matching the final grade of the curb line in the area of the unit. The unit to be placed such that the unit and top slab match the grade of the curb in the area of the unit. Compact undisturbed sub -grade materials to 95% of maximum density at +1- 29,6 of optimum moisture. Unsuitable material below sub -grade shall be replaced to the site engineer's approval. D. Outlet connections shall be aligned and sealed to meet the approved drawings with modifications necessary to meet site conditions and local regulations. E. Once the unit is set, the internal wooden forms and protective mesh cover must be left intact. Remove only the temporary wooden shipping blocks between the box aand top slab. The top lid should be sealed onto the box section before backfilling, using a non - shrink grout, butyl rubber or similar waterproof seal. The boards on top of the llid and boards sealed in the unit's throat must NOT be removed. The Supplier (Anieri(cast or its authorized dealer) will remove these sections at the time of activation. Bacl�filling should be performed in a careful manner, bringing the appropriate fill materiall up in d" lifts on all sides. Prccast sections shall be set in a manner that will restult in a watertight joint. In all instances, installation of Filterra' unit shall conform to jASTM specification C991 "Standard Practice for Installation of Underground Precast Utility Structures", unless directed other%mse in contract documents. F, Curb and gutter construction (where present) shall ensure that the flow -line of the Filterra'r' units is at a greater elevation than the flaw -line of the bypass struciture or relief (drop inlet, curb cut or similar). Failure to comply with this guideline maw cause failure and/or damage to the Filterra environmental device. G. Each Filterra unlit must receive adequate irrigation to ensure survival of the liviing system dining periods of drier weather. This may be achieved through gutter flow or through the tree grate. 1 3`iS RS+:A wAlterra..com "o1i Fr'-:: fa,�4 z-' 315. I I . 1 I ' I I j INLET SHAPINOG I (BY OTHERS) I I A i i A J I l i I I I I I I I I I I I L--- I CURB (BY OTHERS)) SDR -35 PVC COUPLING PLAN VIEW CAST INTO PRECAST BOX WALL (OUTLET PIPE LOCATION VARIES) CLEANOUT PLANT AS SUPPLIED COVER BY AMERICAST TREE FRAME & GRATE CAST IN(NOT SHOWN GALVANIZED CAST IN TOP SLAB TOP SLAB FOR CLARITY) ANGLE NOSING TOP SLAB _ CURB AND GUTTER INTERLOCKING JOINT (TYP) cc (BY OTHERS) 1 STREET 10- 0 oDOWEL BARS I > ® 12" O.C. � Z FILTER MEDIA PROVIDEID BY AMERICAST PERFORATED MULCH PROVIDED BY AMERICAST UNDERDRAIN SYSTEM BY AMERICAST UNDERDRAIN STONE PROVIDED BY AMERICAST SECTION A -A DESIGNATION L W TREE GRATE QTY & SIZE OUTLET PIPE 6 x 4 6'-0" 4'-0'" (1) 3x3 4" SDR -35 PVC 8 x 4 8'-0" 4'-0" (1) 3x3 4" SDR -35 PVC 8 x 6 8'-0" 6"-0" (1) 4x4 4" SDR -35 PVC 10 x 6 10'-0" 6'-0" (1) 4x4 6" SDR -35 PVC 12 x 4 12'-0" 4'-0'" (2) 3x3 4" SDR -35 PVC 12 x 6 12'-0" C-0" (2) 4x4 6" SDR -35 PVC 13 x 7 13'-0" 7'-0" (2) 4x4 6" SDR -35 PVC MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED DRAWING AVAILABLE IN TIF RILE FORMAT. BY WRITTEN AUTHORIZATION FROM FILTERRA DATE: 09-04-07 DWG: FTNW-3 0 Q L/VLI �Li� UGL L1�J U® PRECAST FILTERRA® UNIT f l R 00 fra" NARROW WIDTH CONFIGURATIOIN US PAT 6,277,274 Copyright Ca 2007 by A-ri-t AND 6,569,321 INLETS ON 16 6.5 lmffit for capdty and depth) o�,oaa UaG�o9 FILTERRA PRECAST FILTERRA THROAT =. TOP SLAB CURB "k. '; OPENING (TYP} Ce A. + a 628.24 4 6" FILTERRA THROAT OPENING 28.42 1 0.013 1.02 15 1 6.53 -6" OPENING •'` a'. GUTTER DEPRESSED (TYP) GUTTER (TYP) THAN ELEV 'B' 4-6° OPENIN - FIf,TERRA THROAT CURB INLET THROAT GUTTER FLOW GUTTER FLOW DEPRESSED GUTTER AT FILTERRA BYPASS CURB INLET �) ELEVATION VIEW INTERLOCKING FILTERRA UNIT STORMWATER CAST -IN-PLACE UJ O y. • >TO STORM DRAIN z EFFLUENT PERFORATED INVERT OLr STORMWATER FLUME & GUTTER BY AMERICAST EFFLUENT IN (MUST BE LOWER) CROSS SECTION MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEN AUTHORIZATION FROM FILTERRA n = 0.025 for CMP DATE: 07-07-06 DWG: FLP -2 (SLOPED TOWARD A 6.67 PRECAST •*; FILTERRAO TYPICAL FLOWLINE .:: `r DOWEL FILTERRA THROAT) Hydrology 15 FILTERRA US PAT 6,277,274 CAST -IN-PLACE€ ,:. (TYP) Pipe Qs g DOWEL BOX WALL FLUME & GUTTER W PRECAST J (TYP) (CROWNED AND SLOPED C6 FILTERRA W - - TOWARD FILTERRA THROATS) BOX WALL 141 U 0.37 0.55 0.204 0.204 U 6.67 1.36 1.36 632.17 630.25 95.81 0.013 2.00 15 U 5.57 0.29 139 137 0.48 OU 0.235 0.439 5.29 6.57 1.55 1 2.88 630.15 628.43 101.10 0.013 1.70 15 8.43 6.27 0.27 137 135 0.33 0.57 1 0.188 _ 1 5.56 6.49 C 4.06 628.18 626.95 122.78 0.013 1.00 15 6.47 5.52 lug • � 15 0.69 0.62 0.428 1.055 0 6.37 2.73 6.72 0, 625.61 83.29 0.013 1.01 18 10.55 � 0.22 o - o � _' 0.74 0.022 6.14 0 0.14 6.79 623.30 622.87 23 0.013 1.01 Q 10.57 ro 0.11 > -01 > a 0.64 0.096 Az _UL 6.25 > 0.60 E U) 25.00 0.013 U 18 9.116 5.82 0.07 LC Pipe run: 1010 Block 2 Irrperviotus Area 0.66 0.90 0.590 0.590 5.00 6.67 3.93 3.93 Block 2 Irrlpervious Area 0.44 0.90 0.394 0.394 5.00 6.67 2.62 2.62 161 159 0.04 - - - - 6.67 0.22 125 123 0.11 0.90 0.099 0.493 5.00 6.67 0.66 3.28 638.29 637.93 36.88 0.013 0.98 18 10.38 3.08 0.20 6.64 123 121 0.20 0.78 0.156 0.649 5.20 6.60 1.03 4.28 637.83 637.25 60.60 0.013 0.96 18 10.28 4,67 0.22 5.21 121 119 0.06 0.73 0.044 0.692 5.42 6.53 0.29 4.52 633.25 627,95 105.71 0.013 5.01 18 23.52 9.10 0.19 0.924 119 117 0.11 0.68 1 0.075 0.884 5.61 6.47 0.48 5.72 627.85 624.55 239.88 1 0.013 1.38 18 1 12.32 6.90 0.58 0.071 117 115 0.29 0.76 1 0.220 1.104 6.19 6.29 1.39 6.95 623.80 623.47 66.23 0.013 0.50 24 15.97 4.97 0.22 0.63 115 113 0.17 0.69 0.117 1.708 6.41 6.23 0.73 10.64 622.61 622.27 66.70 0.013 0.51 24 16.15 5.51 0.20 0.06 113 111 0.07 0.57 0.040 1.748 6.61 6.17 0.25 10.79 622.17 622.01 31.10 0.013 0.51 24 16.23 5.53 0.09 145 111 109 0.17 0.80 0.136 1.884 1 6.71 6.15 0.84 11.58 621.91 621.39 104.65 0.013 0.50 24 15.95 5.57 0.31 145 109 107 0.06 1 0.71 0.043 3.099 7.02 6.06 0.26 18.78 621.29 620.59 69.48 0.013 1.01 24 22.71 8.15 0.14 107 105 0.02 0.78 0.016 3.115 7.16 6.02 0.09 18.76 620.49 619.50 98.72 0.013 1.00 24 22.65 8.07 0.20 0.16 105 103 0.09 0.70 0.063 5.523 7.37 5.97 0.38 32.97 619.01 618.20 84.75 0.013 0.96 30 40.10 9.19 0.15 103 101 0.00 0.00 0.000 5.523 7.52 5.93 0.00 32.75 610.36 610.00 36.00 0.013 1.00 30 41.02 9.31 0.06 9.13 101 101A 0.00 0.00 0.000 5.523 7.58 5.91 0.00 32.66 602.23 601.66 56.60 0.013 1.01 30 41.16 9.351 0.10 15 8.37 5.81 0.16 167 147 0.49 0.88 0.431 0.431 5.00 6.67 2.87 2.87 630.38 629.79 29.29 0.013 2.01 15 9.17 6.68 0.07 i Pipe run: 200 213 211 1.73 0.35 0.606 0.606 9.00 5.58 3.38 3.38 6401.65 639.25 72.00 0.013 1.94 15 9.011 6.90 0.17 211 209 0.04 0.90 0.036 0.642 9.17 5.54 0.20 3.55 636.84 635.83 28.28 0.013 3.57 15 12.211 8.75 0.05 209 207 0.05 0.87 Pill 0.685 9.23 5.53 0.24 3.79 635.73 626.87 89.08 0.013 9.95 15 20.37 13.08 0.11 207 205 0.14 0.46 0.064 0.749 9.34 5.51 0.35 4.13 626.77 615.55 151.53 0.013 7.40 15 17.58 11.91 0.21 205 203 1 0.36 0.57 0.205 0.955 9.55 5.46 1.12 5.21 615.45 613.80 179.64 0.013 0.92 15 6.19 5.70 0.53 203 201 1 0.00 0.00 0.000 0.955 10.08 5.35 0.00 5.11 613.70 613.00 107.67 0.013 0.65 15 5.21 4.85 0.37 Pipe run: 300 - NOT USED Pipe run: 400 - NOT USED Pipe run: 500 511 1 509 4.31 0.55 ;r 2.371 15.00 4.55 10.77 I 636.50 635.98 72.60 0.013 0.72 24 19.15 14.36 0.08 30"w X 19"h elliptical RCP 509 507 0.41 0.75 0.308 2.678 15.08 4.53 1.39 12.14 635.88 635.57 37.07 0.013 0.84 24 20.619 14.83 0.04 30"w X 19"h elliptical RCP 507 505 0.11 0.90 0.099 2.777 15.13 4.53 0.45 12.57 635.47 635.30 20.82 0.013 0.82 24 20.44 15.09 0.02 505 503 0.00 0.00 0.000 2.777 15.15 4.53 0.00 0.00 634.05 633.53 71.80 0.013 0.72 18 8.944 6.53 0.18 Bypass Ripe 503 501 0.00 0.00 0.000 2.777 15.33 4.50 0.00 4.92 1 633.43 1 632.85 1 56.00 1 0.013 1.04 24 23.02 5.87 0.16 After Detention y for lrdeU dr,-AnhV tan stormwaW awl Herat Witfles, where and fiow to fadktWs Is n0 avaitaIrl , d capWire b, required t -5ir ` �N �� Activation A. Activation of the Filterra unit is performed ONLY by the Supplier. Purchaser is responsible for Filterra inlet protection and subsequent clean out cost. This process cannot commence until the project site is fully stabilized and cleaned (full landscaping, grass cover, final paving and street sweeping completed), negating the chance of construction materials contarruna.ting the Filterra® system. Care shall be taken during construction not to damage the protective throat and top plates. B. Activation includes installation of plants) and mulch layers as necessary. Maintenance A. Each correctly installed Filterrat unit is to be maintained by the Supplier, or a Supplier approved contractor for a minimum period of 1 year. The cost of this service is to be included in the price of each Filterra' unit. Extended maintenance contracts are available at extra cost upon request. B. Annual maintenance consists of a maximum of (2) scheduled visits. The visits are scheduled seasonally, the spring visit aims to clean up after winter loads including salts and sands. The fall visit helps the system by removing excessive leaf litter. C. Each maintenance visit consists of the following tasks. 1. Filterra` unit inspection 2. Foreign debris, silt, mulch & trash removal 3. Filter media evaluation and recharge as necessary 4. Plant health evaluation and priming or replacement as necessary 5. Replacement of mulch 6. Disposal of all maintenance refuse items T Maintenance records updated and stored (reports available upon request) D. The begimiiiig and ending date of Supplier's obligation to maintain the installed system shall be determined by the Supplier at the time the system is activated. Owners must promptly notify the Supplier of any damage to the plant(s), which constitate(s) an integral part of the bioretention technology. w iliiw.f11t er r a.coln CROWNED FLUME FLUME - SLOPED PRECAST FILTERRA TOWARDS FILTERRA THROAT TOP SLAB (TYP) PRECAST SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS SEE BELOW FOR DETAILS NOT SHOWN STANDARD 90' NOSING (OTHER NOSING AVAILABLE UPON REQUEST) --- 4-6" CLEAR THROAT OPENING ., 6 ria .4 d' bd4 G da. d CAST -IN-PLACE a. DEPRESSED GUTTER ° AND THROAT OPENING (BY CONTRACTOR) #4 DOWEL BARS © 12" O.C. BY AMERICAST TO BE BENT AS NECESSARY BY CONTRACTOR PRIOR TO INSTALLATION OF FIELD POURED GUTTER a J o�,oaa UaG�o9 FILTERRA PRECAST FILTERRA THROAT =. TOP SLAB CURB "k. '; OPENING (TYP} Ce A. + a 628.24 4 6" FILTERRA THROAT OPENING 28.42 1 0.013 1.02 15 1 6.53 -6" OPENING •'` a'. GUTTER DEPRESSED (TYP) GUTTER (TYP) THAN ELEV 'B' 4-6° OPENIN - FIf,TERRA THROAT CURB INLET THROAT GUTTER FLOW GUTTER FLOW DEPRESSED GUTTER AT FILTERRA BYPASS CURB INLET �) ELEVATION VIEW INTERLOCKING FILTERRA UNIT STORMWATER CAST -IN-PLACE UJ O y. • >TO STORM DRAIN z EFFLUENT PERFORATED INVERT OLr STORMWATER FLUME & GUTTER BY AMERICAST EFFLUENT IN (MUST BE LOWER) CROSS SECTION MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEN AUTHORIZATION FROM FILTERRA n = 0.025 for CMP DATE: 07-07-06 DWG: FLP -2 (SLOPED TOWARD n = 0.01 for HDPE 6.67 PRECAST •*; FILTERRAO TYPICAL FLOWLINE .:: `r DOWEL FILTERRA THROAT) Hydrology 15 FILTERRA US PAT 6,277,274 CAST -IN-PLACE€ ,:. (TYP) Pipe Qs g DOWEL BOX WALL FLUME & GUTTER W PRECAST J (TYP) (CROWNED AND SLOPED C6 FILTERRA W - - TOWARD FILTERRA THROATS) BOX WALL 141 SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS SEE BELOW FOR DETAILS NOT SHOWN STANDARD 90' NOSING (OTHER NOSING AVAILABLE UPON REQUEST) --- 4-6" CLEAR THROAT OPENING ., 6 ria .4 d' bd4 G da. d CAST -IN-PLACE a. DEPRESSED GUTTER ° AND THROAT OPENING (BY CONTRACTOR) #4 DOWEL BARS © 12" O.C. BY AMERICAST TO BE BENT AS NECESSARY BY CONTRACTOR PRIOR TO INSTALLATION OF FIELD POURED GUTTER a J o�,oaa UaG�o9 CURB INLET PRECAST .i =. 1 5.00 TOP SLAB •yw A. + a 628.24 627.95 c., c. a 4 d' X'_ S C. THROAT PROTECTION DEVICE DO NOT REMOVE - LEAVE IN PLACE UNTIL SITE IS STABILIZED AND FILTERRA IS ACTIVATED PRECAST BOX WALL V IMPORTANT FILTERRA FLOWLINE MUST BE AT A HIGHER SECTION VIEW ELEVATION THAN BYPASS FLDWLINE (DROP INLET OR STANDARD FILTERRA THROAT OPENING EITHER) MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEN AUTHORIZATION FROM FILTERRA DRAWING AVAILABLE IN TIFF FILE FORMAT. DATE: 02-27-06 DWG: CGT -4 6) FILTERRAO THROAT OPENING fifirra" AND GUTTER OR FLUME DETAIL US PAT 6,277,274 Copydg6 02007 byAme =t AND 6,569,321 Table 8: Pipe Design Table o�,oaa UaG�o9 CURB INLET FILTERRA 0.117 1 0.117 1 5.00 O�O�°� ���DQ ODQQ i3�.GlT LLLLLL LLL L 1 0.78 628.24 627.95 28.42 1 0.013 1.02 15 1 6.53 PLAN VIEW STANDARD TRANSITION FROM ELEV 'A' MUST CURB AND STANDARD TO BE HIGHER GUTTER DEPRESSED (TYP) GUTTER (TYP) THAN ELEV 'B' SLOPE FIf,TERRA THROAT CURB INLET THROAT GUTTER FLOW GUTTER FLOW DEPRESSED GUTTER AT FILTERRA BYPASS CURB INLET THROAT OPENING (TYP) FLOWLINEELEV'A' FLOWLINEELEV'B' ELEVATION VIEW INTERLOCKING FILTERRA UNIT STORMWATER JOINT (TYP) `0 STRUCTURE UJ O y. OUTLET PIPE N (BY OTHERS) CONNECT >TO STORM DRAIN z EFFLUENT PERFORATED INVERT OLr STORMWATER UNDERDRAIN SYSTEM (3'-6") STRUCTURE BY AMERICAST EFFLUENT IN (MUST BE LOWER) CROSS SECTION MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEN AUTHORIZATION FROM FILTERRA n = 0.025 for CMP DATE: 07-07-06 DWG: FLP -2 0.486 n = 0.01 for HDPE 6.67 3.24 WL'�LnS LJgzwy FILTERRAO TYPICAL FLOWLINE Pipe coyt�nt®zoo7byA xia�t AND OULET PIPE RELATIONSHIP Hydrology 15 6.52 US PAT 6,277,274 0.09 ryoo AND 6,569,321 Table 8: Pipe Design Table 119 0.16 1 0.73 0.117 1 0.117 1 5.00 6.67 0.78 1 0.78 628.24 627.95 28.42 1 0.013 1.02 15 1 6.53 3.65 PIPE DESIGN TABLE 0 s VIM 1 0-U 0 Z:D -ud d S1 n I12L I UJ n 0.05 tor VDOT EC -2 where V<4fps LU it Q (0 U J 127 115 0.60 n = 0.025 for CMP n = 0.013 for RCP 0.486 n = 0.01 for HDPE 6.67 3.24 3.24 623.00 Pipe 28.50 0.013 Hydrology 15 6.52 5.39 0.09 ryoo 'S Pipe Qs W W W J C6 W 0 141 U 0.37 0.55 0.204 0.204 U 6.67 1.36 1.36 632.17 630.25 95.81 0.013 2.00 15 U 5.57 0.29 139 137 0.48 OU 0.235 0.439 5.29 6.57 1.55 1 2.88 630.15 628.43 101.10 0.013 1.70 15 8.43 6.27 0.27 137 135 0.33 0.57 1 0.188 _ 1 5.56 6.49 C 4.06 628.18 626.95 122.78 0.013 1.00 15 6.47 5.52 0.37 135 15 0.69 0.62 0.428 1.055 0 6.37 2.73 6.72 0, 625.61 83.29 0.013 1.01 18 10.55 6.39 0.22 o - o 0.03 0.74 0.022 6.14 0 0.14 6.79 623.30 622.87 23 0.013 1.01 Q 10.57 ro 0.11 > -01 > a 0.64 0.096 Az _UL 6.25 > 0.60 E U) 25.00 0.013 U 18 9.116 5.82 0.07 LC Pipe run: 1010 Block 2 Irrperviotus Area 0.66 0.90 0.590 0.590 5.00 6.67 3.93 3.93 Block 2 Irrlpervious Area 0.44 0.90 0.394 0.394 5.00 6.67 2.62 2.62 161 159 0.04 - - - - 6.67 0.22 125 123 0.11 0.90 0.099 0.493 5.00 6.67 0.66 3.28 638.29 637.93 36.88 0.013 0.98 18 10.38 3.08 0.20 6.64 123 121 0.20 0.78 0.156 0.649 5.20 6.60 1.03 4.28 637.83 637.25 60.60 0.013 0.96 18 10.28 4,67 0.22 5.21 121 119 0.06 0.73 0.044 0.692 5.42 6.53 0.29 4.52 633.25 627,95 105.71 0.013 5.01 18 23.52 9.10 0.19 0.924 119 117 0.11 0.68 1 0.075 0.884 5.61 6.47 0.48 5.72 627.85 624.55 239.88 1 0.013 1.38 18 1 12.32 6.90 0.58 0.071 117 115 0.29 0.76 1 0.220 1.104 6.19 6.29 1.39 6.95 623.80 623.47 66.23 0.013 0.50 24 15.97 4.97 0.22 0.63 115 113 0.17 0.69 0.117 1.708 6.41 6.23 0.73 10.64 622.61 622.27 66.70 0.013 0.51 24 16.15 5.51 0.20 0.06 113 111 0.07 0.57 0.040 1.748 6.61 6.17 0.25 10.79 622.17 622.01 31.10 0.013 0.51 24 16.23 5.53 0.09 145 111 109 0.17 0.80 0.136 1.884 1 6.71 6.15 0.84 11.58 621.91 621.39 104.65 0.013 0.50 24 15.95 5.57 0.31 145 109 107 0.06 1 0.71 0.043 3.099 7.02 6.06 0.26 18.78 621.29 620.59 69.48 0.013 1.01 24 22.71 8.15 0.14 107 105 0.02 0.78 0.016 3.115 7.16 6.02 0.09 18.76 620.49 619.50 98.72 0.013 1.00 24 22.65 8.07 0.20 0.16 105 103 0.09 0.70 0.063 5.523 7.37 5.97 0.38 32.97 619.01 618.20 84.75 0.013 0.96 30 40.10 9.19 0.15 103 101 0.00 0.00 0.000 5.523 7.52 5.93 0.00 32.75 610.36 610.00 36.00 0.013 1.00 30 41.02 9.31 0.06 9.13 101 101A 0.00 0.00 0.000 5.523 7.58 5.91 0.00 32.66 602.23 601.66 56.60 0.013 1.01 30 41.16 9.351 0.10 15 129 119 0.16 1 0.73 0.117 1 0.117 1 5.00 6.67 0.78 1 0.78 628.24 627.95 28.42 1 0.013 1.02 15 1 6.53 3.65 0.00 V o 0 s VIM 1 0-U 0 Z:D -ud d S1 n I12L I UJ n 0.05 tor VDOT EC -2 where V<4fps LU it Q (0 U J 127 115 0.60 0.81 0.486 0.486 1 5.00 6.67 3.24 3.24 623.00 622.71 28.50 0.013 1.02 15 6.52 5.39 0.09 ryoo 'S U Qs W W W J C6 H �- 0 141 139 0.37 0.55 0.204 0.204 5.00 6.67 1.36 1.36 632.17 630.25 95.81 0.013 2.00 15 9.14 5.57 0.29 139 137 0.48 0.49 0.235 0.439 5.29 6.57 1.55 1 2.88 630.15 628.43 101.10 0.013 1.70 15 8.43 6.27 0.27 137 135 0.33 0.57 1 0.188 0.627 1 5.56 6.49 1.22 4.06 628.18 626.95 122.78 0.013 1.00 15 6.47 5.52 0.37 135 133 0.69 0.62 0.428 1.055 5,93 6.37 2.73 6.72 62f3.45 625.61 83.29 0.013 1.01 18 10.55 6.39 0.22 133 131 0.03 0.74 0.022 1.077 6.14 6.31 0.14 6.79 623.30 622.87 42.43 0.013 1.01 18 10.57 6.37 0.11 131 109 0.15 0.64 0.096 1.173 6.25 6.27 0.60 7.36 622.08 621.89 25.00 0.013 0.76 18 9.116 5.82 0.07 Block 2 Irrperviotus Area 0.66 0.90 0.590 0.590 5.00 6.67 3.93 3.93 - - - - - - - - - 161 159 0.04 0.83 0.033 0.623 5.00 6.67 0.22 4.16 1 643.98 643.45 33.42 0.013 1.59 15 8.13 6.65 0.08 159 157 0.22 0.56 0.123 0.747 5.08 6.64 0.82 4.96 643.35 642.63 51.21 0.013 1.41 15 7.66 6.83 0.12 157 155 0.17 0.68 0.116 0.862 5.21 6.60 0.76 5.69 642.53 642.09 24.52 0.013 1.79 15 8.65 7.14 0.06 155 153 0.09 0.69 0.062 0.924 5.27 6.58 0.41 6.08 641.99 640.84 62.16 0.013 1.85 15 8.79 7.20 0.14 153 151 0.10 0.71 0.071 0.995 5.41 6.53 0.46 6.50 636.99 636.17 40.82 0.013 2.01 15 9.16 8.14 0.08 151 149 0.08 0.63 0.050 1.046 5.49 6.50 0.33 6.80 636.07 634.20 93.43 0.013 2.00 15 9.14 8.27 0.19 149 147 0.06 0.74 0.044 1.090 5.68 6.45 0.29 7.03 634.10 629.79 261.17 0.013 1.65 15 8.30 7.67 0.57 147 145 0.30 0.74 0.222 1.743 6.25 6.28 1.39 10.94 629.54 628.05 118.83 0.013 1.25 18 11.76 7.55 0.26 145 143 0.13 0.73 0.095 1.838 6.51 6.20 0.59 11.40 627.95 627.20 75.47 0.013 0.99 18 10.47 6.44 0.20 143 105 0.26 0.71 0.185 2.023 6.71 6.15 1.13 12.43 626.34 624.55 89.44 0.013 2.00 18 14.86 9.49 0.16 165 163 0.26 0.83 0.216 0.216 5.00 6.67 1.44 1.44 626.00 625.57 21.51 0.013 2.00 15 9.13 5.61 0.06 163 105 0.17 0.63 0.107 0.323 5.06 6.64 0.71 2.15 625.47 624.55 54.74 0.013 1.68 15 8.37 5.81 0.16 167 147 0.49 0.88 0.431 0.431 5.00 6.67 2.87 2.87 630.38 629.79 29.29 0.013 2.01 15 9.17 6.68 0.07 i Pipe run: 200 213 211 1.73 0.35 0.606 0.606 9.00 5.58 3.38 3.38 6401.65 639.25 72.00 0.013 1.94 15 9.011 6.90 0.17 211 209 0.04 0.90 0.036 0.642 9.17 5.54 0.20 3.55 636.84 635.83 28.28 0.013 3.57 15 12.211 8.75 0.05 209 207 0.05 0.87 0.044 0.685 9.23 5.53 0.24 3.79 635.73 626.87 89.08 0.013 9.95 15 20.37 13.08 0.11 207 205 0.14 0.46 0.064 0.749 9.34 5.51 0.35 4.13 626.77 615.55 151.53 0.013 7.40 15 17.58 11.91 0.21 205 203 1 0.36 0.57 0.205 0.955 9.55 5.46 1.12 5.21 615.45 613.80 179.64 0.013 0.92 15 6.19 5.70 0.53 203 201 1 0.00 0.00 0.000 0.955 10.08 5.35 0.00 5.11 613.70 613.00 107.67 0.013 0.65 15 5.21 4.85 0.37 Pipe run: 300 - NOT USED Pipe run: 400 - NOT USED Pipe run: 500 511 1 509 4.31 0.55 2.371 2.371 15.00 4.55 10.77 10.77 636.50 635.98 72.60 0.013 0.72 24 19.15 14.36 0.08 30"w X 19"h elliptical RCP 509 507 0.41 0.75 0.308 2.678 15.08 4.53 1.39 12.14 635.88 635.57 37.07 0.013 0.84 24 20.619 14.83 0.04 30"w X 19"h elliptical RCP 507 505 0.11 0.90 0.099 2.777 15.13 4.53 0.45 12.57 635.47 635.30 20.82 0.013 0.82 24 20.44 15.09 0.02 505 503 0.00 0.00 0.000 2.777 15.15 4.53 0.00 0.00 634.05 633.53 71.80 0.013 0.72 18 8.944 6.53 0.18 Bypass Ripe 503 501 0.00 0.00 0.000 2.777 15.33 4.50 0.00 4.92 1 633.43 1 632.85 1 56.00 1 0.013 1.04 24 23.02 5.87 0.16 After Detention Table Ditch Design DESIGN z N LL 0 O 0 (/ v C)w of LJJ _Z W J I- 0 > a� O Lij co N vet ground apron assumed to be on le Z z o L. J o\ >o� ° V o 0 s VIM 1 0-U 0 Z:D -ud d S1 n I12L I UJ n 0.05 tor VDOT EC -2 where V<4fps LU it Q (0 U J Q0� a� -UMNrr >Ir z Q III. -q0 ryoo 'S U Qs W W W J C6 H �- 0 a, apron not at 0-00% slope x 3 r al 11: Vutkrat IF'rotection ru""esign Table (ref. Va. Erosion ana, *'�iediment Control Hanftook-,,spe c 11010 OUTLETTab-le PROTECTIONDESIGN z N LL 0 O 0 (/ v C)w of LJJ _Z W J I- 0 > a� O Lij co N vet ground apron assumed to be on le Z z o L. J o\ >o� ° V o 0 s VIM 1 0-U 0 Z:D -ud d S1 n I12L I UJ 57 LU it Q (0 U J Q0� a� U z Q III. -q0 ryoo 'S U Qs W W W J C6 H �- 0 apron not at 0-00% slope NOTE: ADDITIONAL DRAINAGE WILL ENTER STRUCTURE 163 AND STRUCTURE 127 FROM BLOCK 2. THE ADDITIONAL DRAINAGE IS NOT INCLUDED IN THE INLET CALCULATIONS, AS THE ADDITIONAL WATER WILL BE PIPED FROM ROOF DRAINS AND A GRINDER PUMP. THE PIPE SYSTEM TAKES INTO ACCOUNT THIS ADDITIONAL DRAINAGE AREA AND IT HAS BEEN ACCOUNTED FOR IN THE PIPE CALCULATIONS. F'I��+ �- i+ RANK 1' ?OfM' No. 49626 ►tV SCALE: 1" = 30' DATE: 09/13/10 DRAWN BY: FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02/28/11 - ACSA COMMENTS 3. 03/31/11 - RESPOND TO COUNTY COMMENTS V z N LL 0 O 0 (/ v C)w of LJJ _Z W J I- 0 > a� O Lij co N 0 Z z o L. J o\ z z N LL 0 O 0 Z > v C)w �- C� � ao IH I- 0 > a� O Lij co N O Z _J U) >o� ° V o 0 z Lr � "D rn 1 0-U 0 Z:D -ud d E0 These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. W z z H 1 1 1 ■ (� � �■ ©C oC CL z IH I- z S-41000 0 U Q 05- m J z o `` E0 n I12L I UJ 57 LU V) Q (0 U W z H 1 1 1 ■ (� � �■ ©C oC W z O J H 2 Q U0 m J z o `` o O z � z LU V) J Q0� W U z Q III. -q0 ryoo 'S U W W W J C6 H �- W PROJECT NO. 100 SHEET NO. ESC -9 OF 19 C ACCEPTABLE FILL MATERIALS: STORMTECH SC -740 CHAMBER SYSTEMS ANN MATERIAL LOCATION DESCRIPTION AASHTO M43 COMPACTION/DENSITY REQUIREMENT A B DESIGNATION' Elevation ®FILL MATERIAL FOR LAYER'D' STARTS FROM THE ANY SOIUROCK MATERIALS, NATIVE SOILS, ENGINEER'S PLANS. CHECK PLANS x tac e ef, MAY HAVE STRINGENT MATERIAL AND PREPARATION TOP OF THE'C' LAYER TO THE BOTTOM OF FLEXIBLE PAVEMENT OR UNPAVED FINISH GRADE OR PER FOR PAVEMENT SUBGRADE REQUIREMENTS. N/p' REQUIREMENTS. ABOVE. NOTE THAT PAVEMENT SUBBASE MAY BE 61.3 ;x;19 0.x'4 7 PART OF THIS LAYER. 6_3180 0, 01 633:86 FILL MATERIAL FOR LAYER'C' STARTS FROM THE © TOP OF THE EMBEDMENT STONE ('B' LAYER) TO GRANULAR WELL -GRADED SOILJAGGREGATE MIXTURES, < 35% FINES. MOST PAVEMENT SUB- 3, 357, 4, 467, 5, 56, 57, 68, 7, 78, 8, 89, 9, mm - BEGIN COMPACTION AFTER 12" [30b MATERIAL OVER NAL THE CHAMBERS IS REACHED. COMPACT ADDITIONAL 18"[457 mm] ABOVE THE TOP OF THE CHAMBER. BASE MATERIALS CAN BE USED IN LIEU OF 6, 67, 10 LAYERS IN 6" [152 mm] LIFTS TO A MIN. 95% ,STANDARD NOTE THAT PAVEMENT SUBBASE MAY BE A PART THIS LAYER 0,01= PROCTOR DENSITY ROLLER GROSS VEHICLE WEIGHT NOT OF THIS LAYER I N/A 0,01 TO EXCEED 12,0001bs [53 I,N]. DYNAMIC FORCE NOT TO 0;;00;x. 634 i'.02A EXCEED 20,000 lbs [89 kN] EMBEDMENT STONE SURROUNDINHFROMCLEAN, , CRUSHED ANGULAR STONE, 0.079 NO COMPACTION REQUIRED. CHAMBERS FROM THE FOUNDATIO AL SIZE DISTRIBUTION 3, 357, 4, 467, 5, 6r334,55 ('A' LAYER) TO THE 'C' LAYER ABOVEEN 3/4 - 2 INCH [19 - 51 mm[ 56,57 B X1-1,6 FOUNDATION STONE BELOW CHAMN, CRUSHED, ANGULAR STONE, SIZE DISTRIBUTION 3,35,4,467,5, ° STANDARD PROCTOR DENSITY'. THE SUBGRADE UP TO THE FOOT (NAL 3/4 2 INCH - 51 mm[ 56, 57 N/A THE CHAMBER.EEN - [19 0 0" PLEASE NOTE: 1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "GLEAN, CRUSHED, ANGULAR N0.4 (AASHTO M43) STONE". 2. AS AN ALTERNATE TO PROCTOR TESTING AND FIELD DENSITY MEASUREMENTS ON OPEN GRADED STONE, STORMTECH COMPACTION REQUIREMENTS ARIE MET FOR'N LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" [229 mm] (MAX) LIFTS USING TWO FULL COVERAGES WITH AN APPROPRIATE COMPACTOR. STORMTECH ACCEPTABLE FILL MATERIALS UNDERGROUND DETENTION SYSTEM LAYOUT 70 STORMTECH SC -740 CHAMBERS INSTALLED WITH 8" COVER STONE, 6" BASE STONE, 40% STONE VOID INSTALLED SYSTEM VOLUME (PERIMETER STONE INCLUDED) = 5,861 CF 24" RCP DISCHARGE PIPIE STR 503 DISCHARGE STRIUCTURE ,SEE DETAIL THIS SHEET)) 24" PREFABRICATED END CAP J PART # SC7. TYP OF ALL SC -740 24" AND ISOLATOR ROW CONNECTIONS 24" x 24" ADS N-12 OUTLET MANIFOLD L WALL PERFORATED ADS N-12 tDRAIN ?4" ADS N-12 INLET MANIFOLD w/ UM OF (6) 12" STUBS CE MINIMUM 12.5' OF AASHTO M288 CLASS 1 VEN GEOTEXTILE OVER BEDDING STONE FOR )UR PROTECTION AT ALL CHAMBER INLET ROWS 3TR 505 SPLITTER BOX (SEE DETAIL THIS SHEET) SC -740 CHAMBER CHAMBERS SHALL MEET ASTM F 2418-09 "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3/4" - 2" (19 mm 51 mm) CLEAN, CRUSHED, ANGULAR STONE AASHTO M288 CLASS 2 NON -WOVEN GEOTEXTILE -IL SC -740 ENDCAP-r�1� DESIGN ENGINEER RESPONSIBLE FOR ENSURING THE REQUIRED BEARING CAPACITY OF SUBGRADE SOILS (J7 I:I C�] 1.7 hI I� C� I:I WICKHAM 2 POST Ro Pr p�r� y ] Con �L� A B sbw- f Elevation Storage, yr�t wm^o.......... x tac e ef, 6313,55 0.0001 18.50" 470 mm CONTROL 31 5 z. 2 61.3 ;x;19 0.x'4 7 '5 6_3180 0, 01 633:86 0-007 63 , 00 0-008 18 31146 0 0 34.0 0,011 ; 534-05 0,012 634,-10 0,01= 034,10 (0.017 I N/A 0,01 834AE5 0;;00;x. 634 i'.02A 634,35 0-027 634.40 0.079 N/A SC740EPE10B L34.60 000 6r334,55 0,03g7 N/A 0.70" B X1-1,6 0.0421 12" 0. ' 634,76 01, 7 ,14. , £H4 N/A SC740EPE12B 12" 0 0" 373 mm N/A 1.20" 6,0 Q 1-36,10 0. CfA 635.. 1,5 t s; 6 6115,20 0.060 SC740EPE15B 0.071 375 mm 0" 467 mm 6 5` 1 35 0,0116 0 0,078 63.x.45 0.08 6 51, 6 0 01.08:2 5316.05 0084 N/A UA8E 18" 0:00J 19.70" 500 mm 63,1 i7 1 0,092 *SC740EPE24B 24" [600 mm] e,35,85 0_09.7 6'35A)a 0.091 6 0.101 636, 0, . 0,103, 635,05:'' 0..1015 6,10 0, -06 THE INSTALLED CHAMBER SYSTEM SHALL PROVIDE THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS SECTION 12.12 FOR EARTH AND LIVE LOADS, WITH CONSIDERATION FOR IMPACT AND MULTIPLE VEHICLE PRESENCE. GRANULAR WELL GRADED SOILAGGREGATE MIXTURES, <35% RINES. COMPACT IN 6" LIFTS TO 95% STANDARD PROCTOR DENSITY. SEE THE TABLE OF ACCEPTABLE FILL MATERIALS AmPAVEMENT 6" [152 mm] 18" 96" MIN. [457 mm] [2438 mm] MIN. MAX. SC -740 STANDARD CROSS SECTION its lling, LLC rimed 3132112011 C) 13312011 0 yA("s at i L' jt „P P' fit;€1� w I 1. ALL DESIGN SPECIFICATIONS FOR STORM"TECH SC -740 CHAMBERS SHALL BE IN ea-stotage forACCORDANCE WITH THE STORMTECH DESIGN MANUAL Elevatton sr "'que 2. THE INSTALLATION OF STORMTECH SC -740 CHAMBERS SHALL BE IN ACCORDANCE 636,15 WITH THE LATEST STORMTECH INSTALLATION INSTRUCTIONS x 21 .20 11 `3. THE CONTRACTOR IS ADVISED TO REVIEW AND UNDERSTAND THE INSTALLATION ��-1121 0 INSTRUCTIONS PRIOR TO BEGINNING SYSTEM INSTALLTION. CALL 1-888-892-2694 O� t13k i'15 OR VISIT WWW.STORMTECH.COM TO RECIEVE A COPY OF THE LATEST STORMTECH 0.11r INSTALLTION INSTRUCTIONS 636,60 0 1 . %'a . C"A6,60 0,120 4. CHAMBERS SHALL MEET THE DESIGN REQUIREMENTS AND LOAD FACTORS 1=3.8 a 0a,3't SPECIFIED IN SECTION 12.12 OF THE LATEST EDITION OF THE AASHTO LRFD BRIDGE 3 f 0,122 DESIGN SPECIFICATIONS 0,111 2 a, 635 .7 1 ,» 11336,85 B 2 636-90 0,127 63&95 128 7.U0 111129 63T37,' OI_3 3 SC -740 NOTES gs I& 9 ✓ R �'F 83-710 0A34 6 3 T 2.51 0.136 6 ° 30 637,35 1 6 7.6 L1 35 [762 mm] 3- � 1 35 P O O 07.616 135 t7 I ',37,70 x115 8r,75 0.135 51., s 6.13 [1295 mm] F". 8 5 G,135 90 0.136 ACCEPTS 4" [100 mm] SCH 40 PVC 9 53571PIPE FOR INSPECTION PORT 00 01135 85.4" [2169 mm] INSTALLED t:5: � 63 .05 0 k 638.1 a 0.135 638.15 0,1 0 c, 3&2cl 01$35 6-38-25 0,135 R I § OVERLAP NEXT CHAMBER HERE I (OVER SMALL CORRUGATION) 11 90.7" [2304 mm] ACTUAL -BUILD ROW IN THIS DIRECTION NOMINAL CHAMBER SPECIFICATIONS SIZE (W x H x INSTALLED LENGTH) 51.0" x 30.0" x 85.4" [1295 mm x 762 mm x 2169 mm] CHAMBER STORAGE 45.9 CUBIC FEET [1.30 m3] MINIMUM INSTALLED STORAGE 74.9 CUBIC FEET [2.12 m3] WEIGHT 75 Ibs. [3•x.6 kg] STUBS AT BOTTOM OF END CAP FOR PART NUMBERS ENDING WITH "B" STUBS AT TOP OF END CAP FOR PART NUMBERS ENDING WITH "T" /�1 I:I C�] 1.7 hI I� C� I:I 111 I:/ I:�:� I� u� I• ►•I� nl 1�1►1 I� I» A B C SC740EPE06T 6" 150 mml 10.90" 277 mml 18.50" 470 mm CONTROL -II-II-II-II•-II II II II [I 'I' 6" 1150 mml 10.90" 277 mm SC -740 STANDARD CROSS SECTION its lling, LLC rimed 3132112011 C) 13312011 0 yA("s at i L' jt „P P' fit;€1� w I 1. ALL DESIGN SPECIFICATIONS FOR STORM"TECH SC -740 CHAMBERS SHALL BE IN ea-stotage forACCORDANCE WITH THE STORMTECH DESIGN MANUAL Elevatton sr "'que 2. THE INSTALLATION OF STORMTECH SC -740 CHAMBERS SHALL BE IN ACCORDANCE 636,15 WITH THE LATEST STORMTECH INSTALLATION INSTRUCTIONS x 21 .20 11 `3. THE CONTRACTOR IS ADVISED TO REVIEW AND UNDERSTAND THE INSTALLATION ��-1121 0 INSTRUCTIONS PRIOR TO BEGINNING SYSTEM INSTALLTION. CALL 1-888-892-2694 O� t13k i'15 OR VISIT WWW.STORMTECH.COM TO RECIEVE A COPY OF THE LATEST STORMTECH 0.11r INSTALLTION INSTRUCTIONS 636,60 0 1 . %'a . C"A6,60 0,120 4. CHAMBERS SHALL MEET THE DESIGN REQUIREMENTS AND LOAD FACTORS 1=3.8 a 0a,3't SPECIFIED IN SECTION 12.12 OF THE LATEST EDITION OF THE AASHTO LRFD BRIDGE 3 f 0,122 DESIGN SPECIFICATIONS 0,111 2 a, 635 .7 1 ,» 11336,85 B 2 636-90 0,127 63&95 128 7.U0 111129 63T37,' OI_3 3 SC -740 NOTES gs I& 9 ✓ R �'F 83-710 0A34 6 3 T 2.51 0.136 6 ° 30 637,35 1 6 7.6 L1 35 [762 mm] 3- � 1 35 P O O 07.616 135 t7 I ',37,70 x115 8r,75 0.135 51., s 6.13 [1295 mm] F". 8 5 G,135 90 0.136 ACCEPTS 4" [100 mm] SCH 40 PVC 9 53571PIPE FOR INSPECTION PORT 00 01135 85.4" [2169 mm] INSTALLED t:5: � 63 .05 0 k 638.1 a 0.135 638.15 0,1 0 c, 3&2cl 01$35 6-38-25 0,135 R I § OVERLAP NEXT CHAMBER HERE I (OVER SMALL CORRUGATION) 11 90.7" [2304 mm] ACTUAL -BUILD ROW IN THIS DIRECTION NOMINAL CHAMBER SPECIFICATIONS SIZE (W x H x INSTALLED LENGTH) 51.0" x 30.0" x 85.4" [1295 mm x 762 mm x 2169 mm] CHAMBER STORAGE 45.9 CUBIC FEET [1.30 m3] MINIMUM INSTALLED STORAGE 74.9 CUBIC FEET [2.12 m3] WEIGHT 75 Ibs. [3•x.6 kg] STUBS AT BOTTOM OF END CAP FOR PART NUMBERS ENDING WITH "B" STUBS AT TOP OF END CAP FOR PART NUMBERS ENDING WITH "T" /�1 I:I C�] 1.7 hI I� C� I:I 111 I:/ I:�:� I� u� I• ►•I� nl 1�1►1 I� I» A B C SC740EPE06T 6" 150 mml 10.90" 277 mml 18.50" 470 mm CONTROL N/A SC740EPE06B 6" 1150 mml 10.90" 277 mm N/A 0.50" 13 mm r� .. , , U UNDERDRP MAXIMUM FINISH GIRA TOP OF PAVEMENT/ UNPAVIED MINIMUM PAVED FINISH GRADEE BASE OF FLEXIBLE PAVEMENT / TOP OFF REINFORCED CONCRETE PAVEMENT} INLET MANIFOLD STUB INLET MANIFOLD TRUNKIC INLET MANIF TRUNK INVERT INLET MANIF STUBINVERT SECTION B -B INIMUM UNPAVED FINISH GRADE FH VEHICLE TRAFFIC MINIMUM UNPAVED FINISH GRADE WITHOUT VEHICLE TRAFFIC OF STONE OF CHAMBER BASE OF CHAMBER BASE OF STONE UTLET IFOLD STUB JTLET MANIFOLD NK UTLET MANIFOLD IK INVERT )UTLET MANIFOLD INVERT AASHTO M2£ WOVEN GE OVER FO STONE F( PROTECTI CHAMBERIN PART# STORMTECH CHAMBER STUB DUAL WALL PERFORATED FOUNDATION STONE A B C SC740EPE06T 6" 150 mml 10.90" 277 mml 18.50" 470 mm CONTROL N/A SC740EPE06B 6" 1150 mml 10.90" 277 mm N/A 0.50" 13 mm SC740EPE08T 8" 200 mml 12.20" 310 mml 16.50" 419 mm N/A SC740EPE08B 8" 200 mml 12.20" 310 mm I N/A 0.60" 15 mm SC740EPE10T 10" 250 mml 13.40" 340 mml 114.50" 368 mm �LL w N/A SC740EPE10B 10" F250 mml 0" 340 mm N/A 0.70" 18 mm SC740EPE12T 12" 300 mm 0 o Q 373 mm 12.50" 318 mm 1 N/A SC740EPE12B 12" 300 mm 0" 373 mm N/A 1.20" 30 mmSC740EPE15T Q 15" 375 mm 014.7g, 0" 467 mm 9.00" 229 mm C N/A SC740EPE15B 15" 375 mm 0" 467 mm NIA 1.30" 33 mmSC740EPE18T 18" 450 mm 0" 500 mml 5.00" 127 mm < N/A SC740EPE18B 18" 450 mml 19.70" 500 mm N/A 1.60" r41 mm *SC740EPE24B 24" [600 mm] 18.50" [470 mmj N/A 0.10" [3 mm] NOTE: ALL DIMENSIONS ARE NOMINAL ALL STUBS, EXCEPT FOR THE SC740EPE24B ARE PLACED AT BOTTOM A-1 OF END CAP SUCH THAT THE OUTSIDE DIAMETER OF THE STUB IS FLUSH WITH THE BOTTOM OF THE END CAP. FOR ADDITIONAL INFORMATION CONTACT STORMTECH AT 1-888-892-2694. 1 *FOR THE SC740EPE24B THE 24" [600 mm] STUB LIES BELOW THE B BOTTOM OF THE END CAP APPROXIMATELY 1.75" [44 mm]. BACKFILL B MATERIAL SHOULD BE REMOVED FROM BELOW THE N-12 STUB SO C THAT THE FITTING SITS LEVEL. 4) SC -740 TECHNICAL SPEC. 2) SC -740 ELEVATIONS I U SC -740 MANIFOLD DETAIL INVERT MATCHING CROWN MATCHING SIZE ON SIZE MANIFOLD ECCENTRIC MANIFOLD ECCENTRIC MANIFOLD SECTION A_A SECTION A_A SECTION A_A A A A p STORMTECH SINGLE TEE STORMTECH DOUBLE MANIFOLD MANUFACTURED BY ADS MANUFACTURED BY ADS A STORMTECH TRIPLE MANIFOLD A MANUFACTURED BY ADS Fj1AI 11H I1111 SI 1.1 STUB SIZE AVAIL - STANDARD HEADERS AVAILABLE ADS 1-800-821-6710 MANIFOLDS ARE DESIGNED TO BE COUPLED TO STORMTECH PREFABRICATED END CAPS. WHEN USING STANDARD END CAPS, CORRUGATED PIPE UP TO 18 INCHES CAN BE INSERTED DIRECTLY INTO THE END CAP. FOR 24" INLET PIPES, A CORRUGATED TO SMOOTH PIPE ADAPTER IS REQUIRED. MANIFOLDS 24" STORM - MANIFOLD I INV. OUT = 24" STORMTECH MANIFOLD PIPE: INV. OUT = 6333.53 SECTION B -B 100" -T PRECAST VDOT B-1 STANDARD g BASE W/CONC. WEIR VDOT STD. � $�� TYP. ST -1 STEPS 18" RCP BYPASS PIPE 64" U1 PLAN VIEW 18" RCP BYPASS PIPE INV. OUT = 634.05 - 8" TYP. 12" TYP. -OVERFLOW WEIR 8" Z4' KLN INLET PIPE 24" STORMTECH MANIFOLD HEADER PIPE B PLACE VDOT STD. SL -1 CONCRETE SAFETY SLAB AND TRANSITION TO STANDARD PRE -CAST MANHOLE RISER W/STD. FRAME AND COVER 0 OVERFLOW WEIR 24" RCP INLET PIPE INV. IN = 635.30 4-- __--24" STORMTECH MANIFOLD HEADER PIPE INV. OUT = 634.05 48" SEDIMENT SUMP REINFORCED CONCRETE (TYP.) SECTION A -A STR 505 SPLITTER BOX DETAIL PLACE VDOT STD. SL -1 CONCRETE SAFETY SLAB AND TRANSITION TO STANDARD PRE -CAST MANHOLE RISER W/STD. FRAME AND COVER REINFORCED CONCRETE (TYP.) OVERFLOW WEIR SECTION A -A 12"W X 8"H ORIFICE - INV. = 633.53 8" TYP. I� 12 TYP. DISCHARGE PIPE INV. OUT = 633.43 OVERFLOW WEIR ELEV. = 636.75 SECTION B -B 10 -YR STAGE ELEV. = 636.76 2 -YR STAGE ELEV. = 635.52 18" RC BYPAS PLAN VIEW STR 503 DISCHARGE STRUCTURE DETAIL STORMTECH END CAP FOUNDATION STONE DUAL WALL PERFORATED BENEATH CHAMBER HDPE UNDERDRAIN PIPE AASHTO M288 CLASS 2 STONE BEDDING NON -WOVEN GEOTEXTILE UNDER DRAINAGE PIPE AFCTION 6-8 SC -740 UNDERDRAIN DETAIL STANDARD IR RCP 4SS PIPE RDRAIN OO . U FRANK PORL � a No. s1U , �'caIVAI_ SCALE; 1" = 30 DATE: 09113110 DRAWN BY: FVP REVISIONS. 1, 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS U STORMTECH CHAMBER DUAL WALL PERFORATED FOUNDATION STONE 1 HDPE UNDERDRAIN PIPE BENEATH CHAMBER STONE BEDDING UNDER 1 DRAINAGE PIPE AASHTO M288 CLASS 2 NON -WOVEN GEOTEXTILE TO OUTLET CECT CONTROL STRUCTURE 11-00 STORMTECH END CAP FOUNDATION STONE DUAL WALL PERFORATED BENEATH CHAMBER HDPE UNDERDRAIN PIPE AASHTO M288 CLASS 2 STONE BEDDING NON -WOVEN GEOTEXTILE UNDER DRAINAGE PIPE AFCTION 6-8 SC -740 UNDERDRAIN DETAIL STANDARD IR RCP 4SS PIPE RDRAIN OO . U FRANK PORL � a No. s1U , �'caIVAI_ SCALE; 1" = 30 DATE: 09113110 DRAWN BY: FVP REVISIONS. 1, 02-14-11 - RESPOND TO COUNTY COMMENTS 2, 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS U z 1 Q 1 j 0- n - V CL Z 11-00 W H V w J z W �..0 Q z w rn N 0 O O z �LL w U Q V J W �J _.J O> - w c0 N Ln O V T ■i O Z O r` ,,° w b Ln 0 o Q O re 1 z n O M M M These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party Without the express written consent of POHL CONSULTING. PROJECT NO. 100 SHEET NO. ESC -10 OF 19 z Q j CL H V t.1/ O L W I..L Q w z Q V J W H w > O < re 1 z O W z o- �- 2 O Q � W m J zQ C J W O z J �- <QUj _j W o < O z i U z {�c I..V V W Q � z C W PROJECT NO. 100 SHEET NO. ESC -10 OF 19 M PRE -DEVELOPMENT DRAINAGE DIVIDES _ _ _ �`""_`°200 " (IBJ FEET) 1 inch = 100 ft. POST -DEVELOPMENT DRAINAGE DIVIDES 400 .�'; ''j FRANK V. POHL � .No. 44+L -,,'G SCALE; 1" = 30' DATE: 09113110 DRAWN BY. FVP REVISIONS; 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z F- U O J m W <C H W z 1 H W =OJ CLFQ C) F- LU z o O z ^ J W J F— < <C O U z O U (I) 06 W PROJECT NO. 100 SHEET NO. ESC -11 OF 19 Q U-1 Q U-1 Q z 0 z LU w Q z a LU a re 0 z ry W W _Z 0 Cly z W o z (DN �. 0 O Ow z Q > w V U J n-0 O o W N V 0- Vr OZ C/) z 0 Lq Q � - Q 0 U 0= v��, These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z F- U O J m W <C H W z 1 H W =OJ CLFQ C) F- LU z o O z ^ J W J F— < <C O U z O U (I) 06 W PROJECT NO. 100 SHEET NO. ESC -11 OF 19 Q U-1 Q U-1 Q z 0 z LU w Q z a LU a re 0 PROJECT DESCRIPTION: THE PURPOSE OF THIS PROJECT IS THE CONSTRUCTION OF A NEW RESIDENTIAL DEVELOPMENT LOCATED IN ALBEMARLE COUNTY, VIRGINIA, IN CROZET, LOCATED WEST OF CHARLOTTESVILLE ALONG RT 240. THE PROJECT CONSISTS OF THE CONSTRUCTION OF 48 NEW SINGLE FAMILY DETACHED HOMES AND 8 AFFORDABLE ATTACHED TOWNHOUSE UNITS, AS WELL AS RELATED INFRASTRUCTURE. A TOTAL OF 12.2 f ACRES WILL BE DISTURBED DURING CONSTRUCTION. EXISTING SITE CONDI TIONS: PRESEN TL Y, THE SITE IS AN OPEN FIELD OF GRASS VEGETATION WITH A FARM STRUCTURE THE SITE IS BISECTED BY A RIDGE RUNNING NORTH AND SOUTH DIRECTING RUNOFF TO THE EAST AND WEST THE WESTERN PORTION OF THE SITE DRAINS TO AN EXISTING CULVERT THAT PASSES UNDER THE RAILROAD TRACKS. THE EASTERN PORTION OF THE SITE DRAINS TO AN EXISTING POND IN THE SOUTHWEST CORNER OF THE SI TE, THA T RECEI VES RUNOFF FROM THE WICKHAM POND PHASE I. ADJACENT AREAS DESCRIPTION: THE SITE 1S BOUNDED ON THE NORTH BY ROUTE 240, ON THE EAST BY WICKHAM POND PHASE I, ON THE SOUTH BY THE CSX RAILROAD, AND ON THE WEST BY A PRI VA TE RESIDENCE/FARM. OFF SI TE AREAS. DURING THE CONSTRUCTION OF THIS PROJECT THERE WILL BE OFF-SITE LAND DISTURBANCE WITHIN THE ROUTE 240 RIGHT-OF-WAY, ASSOCIATED WITH THE CONSTRUCTION OF A RIGHT TURN LANE ON ROUTE 240. CRITICAL EROSION AREAS: THERE ARE TWO STREAM BUFFERS LOCATED WITHIN THE PROJECT BOUNDARY, ONE ALONG THE EASTERN BOUNDARY EDGE, THE OTHER IN THE SOUTHWEST CORNER OF THE PROJECT THE STREAM BUFFERS SHALL BE CLEARLY MARKED IN THE FIELD PRIOR TO THE START OF CLEARING ACTIVITY AND SHALL BE PROTECTED FROM ANY ENCROACHMENT THE CONTRACTOR SHOULD ALSO BE AWARE OF THE FACT THAT THERE ARE SEVERAL SOILS TYPES WITHIN THE PROJECT AREA WITH A MODERATE TO SEVERE ERODIBILI TY HAZARD. EXTRA ATTENTION SHOULD BE DEVOTED TO MINIMIZING THE EROSION PROBLEMS WITHIN THESE AREAS. FILL MATERIAL WILL BE TAKEN FROM A BORROW AREA LOCATED ON THE PROJECT SITE AND POSSIBLY FROM OFF-SITE.. SOIL DESCRIPTION: 368- HAYESVILLE CLAY LOAM, 2 TO 7 PERCENT SLOPES. THIS SOIL IS DEEP, WELL DRAINED, AND GENTLY SLOPING. IT IS ON NARROW TO BROAD, CONVEX RIDGETOPS. SLOPES ARE SMOOTH AND ABOUT 200 TO 600 FEET LONG. AREAS OF THIS SOIL ARE IRREGULARLY OVAL OR ARE LONG AND WINDING. THEY RANGE FROM ABOUT 5 TO ABOUT 100 ACRES. TYPICALLY, THE SURFACE LAYER OF THIS SOIL IS BROWN LOAM ABOUT 7 INCHES THICK. PERMEABILITY AND AVAILABLE WATER CAPACITY ARE MODERATE. SURFACE RUNOFF IS MEDIUM. THE EROSION HAZARD IS MODERATE. 37C3- HAYES VILLE CLAY LOAM, 7 TO 15 PERCENT SLOPES. SEVERELY ERODED. THIS SOIL IS DEEP, WELL DRAINED, AND STRONGLY SLOPING IT IS ON NARROW CONVEX RIDGETOPS AND SIDE SLOPES. SLOPES ARE SMOOTH AND ABOUT 200 TO 400 FEET LONG. AREAS OF THIS SOIL ARE LONG AND WINDING. THEY RANGE FROM ABOUT 3 TO 20 ACRES. TYPICALLY, THE SURFACE LAYER OF THIS SOIL IS YELLOWISH RED CLAY LOAM ABOUT 4 INCHES THICK. PERMEABILITY AND AVAILABLE WA TER CAPACITY ARE MODERATE. SURFACE RUNOFF IS RAPID. THE HAZARD OF EROSION IS SEVERE. 37D3- HA YES VILLE CLA Y LOAM, 15 TO 25 PERCENT SLOPES. SEVEREL Y ERODED. THIS SOIL IS DEEP, WELL DRAINED, AND MODERA TEL Y STEEP. IT IS ON SIDE SLOPES THAT BORDER SMALL DRAINAGEWA YS. SLOPES ARE SMOOTH AND ABOUT 200 TO 400 FEET LONG. AREAS OF THIS SOIL ARE LONG AND WINDING. THEY RANGE FROM ABOUT 3 TO 20 ACRES. THE SURFACE LAYER OF THIS SOIL IS YELLOWISH REO CLAY LOAM ABOUT 4 INCHES THICK. PERMEABILITY AND AVAILABLE WATER CAPACITY ARE MODERATE. SURFACE RUNOFF IS RAPID. THE EROSION HAZARD IS SEVERE. 16- CHEWACLA SIL T LOAM. THIS DEEP, NEARL Y LEVEL, SOMEWHA T POORL Y DRAINED SOIL IS ON FLOOD PLAINS ALONG STREAMS AND LARGE DRAINAGEWA YS IN THE PIEDMONT. AREAS OF THIS LOW-LYING SOIL COMMONLY ARE LONG AND NARROW. THEY RANGE FROM ABOUT 5 TO 50 ACRES. SLOPES ARE 0 TO 2 PERCENT. TYPICALLY, THE SURFACE LAYER OF THIS SOIL IS DARK BROWN SILT LOAM ABOUT 8 INCHES THICK. PERMEABILITY IS MODERATE, AND AVAILABLE WATER CAPACITY IS HIGH. THE HAZARD OF EROSION IS SLIGHT. EROSION CONTROL HANDBOOK IRCONTROL SPECIFICAT70N NUMBER e SAFETY FENCE 3.01 CE �oRNEM NOWNII�m�X SOIL TYPES 01, X"IR M����1MR, LIMITS OF GRADING AND CLEARING GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS.• 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR 1S RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FIL TERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIA TEL Y. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7.• 00 AM TO 9: 00 PM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT OR IN ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWA TER MANAGEMENT FACIL I TIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY SHALL CONSIST OF A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5q PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF. AL TERNA TI VES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIA TEL Y. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DIKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIA TEL Y. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-240G.) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MON THS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B.) EROSION AND SEDIMcNT CONTROL MEASURES: UNLESS OTHERWISE INDICATED, ALL VEGETA TI VE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE HANDBOOK. THE MINIMUM STANDARDS OF THE VESCR SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE. STRUCTURAL PRACTICES. 1. TEMPORARY DIVERSION DIKE - 3.09 AND SEDIMENT TRAP - 3.13 A SYSTEM OF TEMPORARY DIVERSION DIKES, TO DIRECT FLOW INTO SEDIMENT TRAPS, WILL BE INSTALLED BELOW MAJOR GRADED AREAS AS INDICATED ON SHEETS 3 & 4 SPECIFIC DETAILS OF THE SEDIMENT TRAPS ARE SHOWN ON THE DETAIL SHEET 6. 2. TEMPORARY SEDIMENT BASINS - 3.14 ONE SEDIMENT BASIN IS TO BE CONSTRUCTED AS INDICATED ON SHEETS 2 & 3 AND DETAIL SHEET 5. CALCULATIONS ARE ON SHEET 5. J. OUTLET PROTECTION - 3.18 RIPRAP IS TO BE PLACED AT THE OUTLET OF ALL PIPES AS INDICATED ON SHEET 4. 4. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS WILL BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDEMENT-LADEN RUNOFF FROM SHEET FLOW AS INDICATED ON SHEETS 3 & 4. SILT FENCE ALONG STREAMS AND CREEKS OR SILT FENCE ENCOMPASSING STOCK PILES SHALL HAVE WIRE BACKING. 5. TREE PRO TEC TION - 3.38 A FENCE BARRIER IS TO BE PLACED AROUND THE TREES AND VEGETATED AREAS WHICH WILL NOT BE DISTURBED TO PROTECT THE TREES AND OTHER VEGETATION FROM CONSTRUCTION EQUIPMENT AND SOIL COMPACTION. 6. TEMPORARY CONSTRUCTION ENTRANCE - 3.02 A TEMPORARY CONSTRUCTION ENTRANCE WITH A WASH RACK SHALL BE INSTALLED AS INDICATED ON SHEET 3 PHASE I. A TEMPORARY CONSTRUCTION ENTRANCE WITH A WASH RACK SHALL BE INSTALLED AS INDICATED ON SHEET 4 PHASE 2 AS IT INTERSECTS WITH U.S. ROUTE 250 AND RADFORD LANE. DURING MUDDY CONDITIONS, DRIVERS OF CONSTRUCTION VEHICLES WILL BE REQUIRED TO WASH THEIR WHEELS BEFORE ENTERING THE HIGH WA Y. 7. STORM DRAIN INLET PROTECTION - 3.07 ALL STORM SEWER INLETS SHALL BE PROTECTED DURING CONSTRUCTION. SEDIMENT -LADEN WATER SHALL BE FILTERED BEFORE ENTERING THE STORM SEWER INLETS. 8. SAFETY FENCE - 3.01 A TEMPORARY SAFETY FENCE WILL BE INSTALLED AROUND THE SEDIMENT BASIN AS SHOWN ON SHEET 3, SIGNS NOTING " DANGER, QUICKSAND, DO NOT ENTER" SHOULD BE POSTED AND EASILY SEEN BY ANYONE APPROACHING THE PROTECTED AREA. THE SAFETY FENCE SHOULD BE LOCATED FAR ENOUGH BEYOND THE OUTER TOE OF THE EMBANKMENT TO ALLOW FOR THE PASSAGE OF MAINTENANCE VEHICLES FENCES SHOULD NOT BE INSTALLED ACROSS THE SLOPE OF A DAM OR DIKE. THE SAFETY FENCE SHOULD BE CHECKED REGULARL Y FOR WEA THER-RELA TED OR OTHER DAMAGE. AN Y NECESSAR Y REPAIRS SHALL BE MADE IMMEDIA TEL Y. VEGETA TI VE PRACTICES: 1. TOPSOILING (STOCKPILE) - 3.30 TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILE LOCATIONS SHALL BE LOCATED ON-SITE AND ARE TO BE STABILIZED WITH TEMPORARY VEGETATION. .2. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED FAST GERMINA TING TEMPORARY VEGETA TION IMMEDIA TEL Y FOLLOWING GRADING. SELECTION OF THE SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR IT lS APPLIED. D0ST CONTROL: i1. DUST CONTROL - 3.39 IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST WHERE ON-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN. IN AREAS SUBJECT TO LITTLE OR NO CONSTRUCTION TRAFFIC, A VEGETA TI VEL Y STABILIZED SURFACE WILL REDUCE DUST EMISSIONS. MULCH IS ANOTHER AL TERNA TI VE IN AREAS WHERE THERE IS NO TRAFFIC. IRRIGATION MAY BE USED FOR HAUL ROADS AND OTHER TRAFFIC ROUTES. REPEAT AS OFTEN AS NEEDED. PERMANENT STABILIZATION. ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIA TEL Y FOLLOWING FINISH GRADING. PRIOR TO SEEDING THE SITE WILL BE LIMED, FERTILIZED. SEEDING SHALL BE DONE ACCORDING TO THE CURRENT COUNTY STANDARDS. THIS SHALL CONSIST OF THE FOLLOWING: TOPSOIL - 2" DEPTH LIME - 90LB511000 SF FERTILIZER - 1000LBS/ACRE OF 10-20-10 NUTRIENT MIX SEED - 180LBS/ACRE CONSITING OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-59 PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH - 80LBS11005F AFTER THESE AREAS ARE STABILIZED, THEY WILL BE MOWED AND MAINTAINED ON A REGULAR BASIS. STORMWA TER MANAGEMENT.• THE IMPERVIOUS AREA OF THE SITE IS BEING INCREASED DUE TO THE CONSTRUCTION OF THE ROADS AND HOUSES. THEREFORE, THIS PROJECT WILL HAVE AN EFFECT ON PEAK RUN-OFF RATES BY INCREASING THE QUANTITY AND VELOCITY OF RUN-OFF. IN ORDER TO MITIGATE THIS INCREASE, MOST OF THE RUN-OFF FROM THE SITE WILL BE DIRECTED TO EITHER THE EXISTING POND (THAT HAS BEEN DESIGNED TO ACT AS A STORMWA TER MANAGEMENT POIND FOR WICKHAM POND PHASE I & li) OR TO THE BIO -FILTER FEATURE IN THE SOUTHEAST CORNER OF THE SITE. THESE TWO MEASURES WILL HELP PREVENT ANY INCREASE IN RUNOFF FROM COMING IN CONTACT WITH ADJACENT PROPERTIES BY CONTAINING THE FIRST FLUSH. THE STORMWATER MANAGEMENT POND AND BIO -FILTER WILL DETAIN MOST OF THE RUNOFF FROM THE PROJECT AND SUBSEQUENTLY DRAIN I T A T A REDUCED VELOCITY. THIS WILL HELP PREVENT FLOODING AND/OR DEGRADATION OF DOWNSTREAM PROPERTIES, STRUCTURES, OR NA TURAL FEATURES. MAINTENANCE: ALL EROSION CONTROL MEASURES SHALL BE PLACED AS THE FIRST PHASE OF ANY LAND DISTURBING ACTIVITIES. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THEY SHALL BE CLEANED REPAIRED OR REPLACED AS NECESSARY THROUGHOUT THE CONSTRUCTION PHASE OF THIS PROJECT. THE FOLLOWING ITEMS WILL BE CHECKED IN PARTICULAR: 1. THE SEDIMENT BASIN WILL BE CLEANED OUT WHEN THE LEVEL OF SEDIMENT BUILDUP REACHES THE CLEANOUT POINT INDICATED ON THE RISER PIPE. 2. THE SEDIMENT TRAPS WILL BE CHECKED REGULARLY FOR SEDIMENT CLEANOUT J. THE GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WILL PREVENT DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT IT SHALL BE REMOVED AND CLEANED OR REPLACED. 4. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF WAY TO THE. TOP OF THE BARRIER. 5. THE SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHALL BE FERTILIZED AND RESEEDED AS NEEDED. SEQUENCE OF CONSTRUCTION: 1. NOTIFY ALBEMARLE COUNTY COMMUNITY DEVELOPMENT TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. 2. FLAG THE LIMITS OF CLEARING AND GRADING AS WELL AS THE STREAM BUFFER AND WOODED AREAS THAT ARE TO REMAIN. J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT 4. INSTALL THE CONSTRUCTION ENTRANCE AT THE LOCATION SHOWN ON THE PHASE I EROSION AND SEDIIMENT CONTROL PLAN. AT CONSTRUCTION ENTRANCES WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PA �IED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. SHOULD THE TEMPORARY CONSTRUCTION ENTRANCE NOT BE MAINTAINED PROPERLY OR AN EXCESSIVE AMOUNT OF SOIL FOUND TRACKED ONTO THE PUBLIC ROADWAY, THEN A PAVED CONSTRUCTION ENTRANCE, WATER TANKER TRUCK WITH 2' PRESSURE WASHERS AND A SETTLING AREA MAY BE REQUIRED BY THE EROSION AND SEDIMENT CONTROL PROGRAM ADMINISTRA TOR. 5. INSTALL THE TREE PROTECTION BEFORE ANY CLEARING ACTIVITY IS STARTED. TREE PROTECTION FENCING SHALL BE MAINTAINED THROUGHOUT ALL PHASES OF CONSTRUCTION. 6. INSTALL THE INITIAL CONSTRUCTION MEASURES SHOWN ON PHASE I EROSION AND SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AND MADE FUNCTIONAL BEFORE ANY LAND DISTURBANCE OCCURS. a. ONE (1) SEDIMENT TRAP SHALL BE INSTALLED TO COLLECT RUNOFF DURING PHASE I. SEDIMENT TRAP DRAINAGE AREA ST#1 2.90 AC. b. THREE (3) SEDIMENT BASINS SHALL BE INSTALLED TO COLLECT RUNOFF DURING PHASE I. SEDIMENT BASIN DRAINAGE AREA SB#1 4.75 AC. SB#2 3.82 A C. SB#3 6.99 A C. c. DIVERSION DIKES SHALL BE INSTALLED TO ENSURE RUNOFF IS PROPERLY DIRECTED TO THE SEDIMENT TRAPS AND BASINS. THE EFFORT SHALL BE MADE TO ENSURE POSITIVE DRAINAGE IS MAINTAINED IN THE DIRECTION SHOWN ON THE PHASE i EROSION AND SEDIMENT CONTROL PLAN FOR ALL DIVERSION DIKES. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, ANID DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION. d. INSTALL SILT FENCE (SF) AND SUPER SILT FENCE (SSF). e. INSTALL ANY REMAINING SEDIMENT CONTROL MEASURES SHOWN ON THE PHASE I EROSION AND SEL7IMENT CONTROL PLAN. 7. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON PHASE I EROSION AND SEDIMENT CONTROL PLAN AND THE COUNTY Ih;'SPECTOR HAS APPROVED THE EROSION CONTROL MEASUIRES, THE CONTRACTOR CAN CLEAR AND GRADE THE SITE. 8. BRING THE ROADS TO ROUGH GRADE. 9. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS IMMEDIATELY (AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE ,APPLIED IMMEDIA TEL Y TO DENUDED AREAS THA T MA Y NOT BE A T FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 10. INSTALL STORM SEWER, WATER, SEWER, AND OTHER UTILITIES. 11. INSTALL CURBS AND SIDEWALKS. INSTALL PAVEMENT BASE AND PAVE ROADS 12. FILL IN BASIN #1 AS AREA IS STABILIZED AND AT THE APPROVAL OF THE COUNTY INSPECTOR. 13. BRING THE REMAINING SITE TO ROUGH GRADE. 14. SEDIMENT BASIN #2 CAN BE REMOVED ONCE INLETS HAVE BEEN MADE OPERATIONAL AND COUNTY INSPECTOR APPROVES THE REMOVAL OF THE SEDIMENT B.I SIN. INSTALL ALONG THE PROPERTY LINE WHERE BASIN WAS REMO VED. 15. SEDIMENT BASIN #3 CAN BE REMOVED ONCE INLETS HAVE BEEN MADE OPERATIONAL, DEVELOPED AREAS DRAINIING TO THE BASIN ARE STABILIZED, AND THE COUNTY INSPECTOR APPROVES THE REMOVAL OF TrHE SEDIMENT BASIN. 16. INSTALL SEDIMENT FOREBA Y CONCURRENTLY WITH OUTFALL EC -1 RIP -RAP PROTECTION FROM STRUCTURE 101A. 17 PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS IMMEDIA TEL Y AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE ,APPLIED IMMEDIA TEL Y TO DENUDED AREAS THA T MA Y NOT BE A T FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS' THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 18. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE REMAINING EROSION CONTROL MEASURES. INSTALL BIOFILTER MEDIA AND LANDSCAPING. 19. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT COINTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE COUNTY ENGINEER IN ACCORDANCE WITH THE VIIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 21. BUILDING PERMITS WILL BE ISSUED FOR LOTS CONTAINING EROSION AND SEDIMENT CONTROL MEASURES UNTIL THE INSPECTOR DEEMS THE MEASURES ARE NO LONGER NEEDED. GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLA NS. 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 959 OF MAXIMUM DRY DENSITY AND 29' OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORM WA TER MANAGEMENT FACILITIES J. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWA TER MANAGEMENT FACILITIES, CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERIMISSION HAS BE OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. DETENTION POND COMPLIANCE STATEMENT 1. THE WICKHAM POND PHASE I WATER PROTECTION ORDINANCE PLAN (WPO -2006-00004) DESIGN INCLUDED ADDITIONAL VOLUME TO ACCOMMODATE A TOTAL AREA OF 12.5 ACRES WITH 252,000 SF OF IMPERVIOUS AREA OF THE PHASE 1l PROPERTY DRAINING TO THE DETENTION POND. THE CURRENT PLAN INCLUDES A TOTAL AREA OF APPROXIMA TEL Y 11.3 ACRES WITH 197,327 SF OF IMPERVIOUS AREA DRAINING TO THE DETENTION POND. THEREFORE, THE ORIGINAL DESIGN ASSUMPTIONS ARE SATISFIED WITH THE CURRENT DESIGN. ALBEMARLE COUNTY EROSION CONTROL NOTES.• ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULA TIONS. ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SI TE A T ALL TIMES. ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES -7.• ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FIL TERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIA TEL Y. MINIMUM STANDARDS: 1. MS -1. [4(1)] PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 2. MS -2. [4(2)] DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE CONTRACTOR IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS SOIL INTENTIONALLY TRANSPORTED FROM THE PROJEC T SI TE. J. MS -3. [4(3)] A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IN THE OPINION OF THE DIVISION OF SOIL AND WATER CONSER VA TION OF THE DEPARTMENT OF CONSERVATION AND RECREATION, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. 4. M5-4. [4(4)] SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS, AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND DISTURBING ACTIVITY, AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 5. MS -5. [4(5)] STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION. 6. MS -6. [4(6)] SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. B. SURFACE RUNOFF FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY SEDIMENT BASINS. THE MINIMUM STORAGE CAPACITY FOR A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AS A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL APPLY TO A BARE EARTH CONDI TION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. 7. MS -7. [4(7)] CUT AND FILL SLOPES SHALL RE DESIGNED AND CONSTRUCTED IN SUCH A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSI VEL Y WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES Ural TIL THE PROBLEM IS CORRECTED. 8. MS -8 [4(8)] CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME, OR SLOPE DRAIN STRUCTURE. 9. MS -9 [4(9)] WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. 10. MS -10. [4(10)] ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WI THOUT FIRST BEING FIL TERED OR OTHERWISE TREA TED TO REMOVE SEDIMEN T. 11. MS -11 [4(11)] BEFORE NEWLY CONSTRUCTED STORMWA TER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. 12. MS -12 [4(12)] WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT, AND STABILIZE THE WORK AREA TO THE GREATEST POSSIBLE EXTENT DURING CONSTRUCTION. NON -ERODIBLE MATERIALS SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NON -ERODIBLE COVER MATERIALS. 13. MS -13 [4(13)] WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NON -ERODIBLE MATERIAL SHALL BE PROVIDED. 14. MS -14 [4(14)] ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. 15. MS -15 [4(15)] THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIA TEL Y AFTER WORK IN THE WATERCOURSE IS COMPLETED. 16. MS -16 [4(16)] UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCA VA TED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RE -STABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULA TIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. 17. MS -17. [4(17)] WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL SUBDIVISION LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. 18. MS -18. [4(18)] ALL TEMPORARY EROSION CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION, OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 19. MS -19. PROPERTIES AND WA TERWA YS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWA TER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION. LTi 6P '� �' . U FRANK N' P fm 5: Na, 4061 � g �Ay SCALE: 1" = 30" DATE: 09113110 DRAWN BY, FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS V roCONSTRUCTION ENTRANCE 3.02 SF z SILT FENCE 3.05 SS AHC 3HC-- W SUPER SILT FENCE W !P _z INLET PROTECTION 3.07 & 3.08 OP (z o011 OUTLET PROTECTION 3.18 S TEMPORARY DIVERSION DIKE 3.09 ST =Po&ntm*ff TEMPORARY SEDIMENT TRAP 3.13 SB 0 U TEMPORARY SEDIMENT BASIN 3.14 TS - TS TEMPORARY SEEDING 3.31 SPS PERMANENT SEEDING 3.32 DC DC DUST CONTROL 3.39 TP -0-0-0- TREE PROTECTION � � � = DRAINAGE DIVIDE �oRNEM NOWNII�m�X SOIL TYPES 01, X"IR M����1MR, LIMITS OF GRADING AND CLEARING GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS.• 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR 1S RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FIL TERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIA TEL Y. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7.• 00 AM TO 9: 00 PM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT OR IN ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWA TER MANAGEMENT FACIL I TIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY SHALL CONSIST OF A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5q PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF. AL TERNA TI VES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIA TEL Y. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DIKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIA TEL Y. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-240G.) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MON THS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B.) EROSION AND SEDIMcNT CONTROL MEASURES: UNLESS OTHERWISE INDICATED, ALL VEGETA TI VE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE HANDBOOK. THE MINIMUM STANDARDS OF THE VESCR SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE. STRUCTURAL PRACTICES. 1. TEMPORARY DIVERSION DIKE - 3.09 AND SEDIMENT TRAP - 3.13 A SYSTEM OF TEMPORARY DIVERSION DIKES, TO DIRECT FLOW INTO SEDIMENT TRAPS, WILL BE INSTALLED BELOW MAJOR GRADED AREAS AS INDICATED ON SHEETS 3 & 4 SPECIFIC DETAILS OF THE SEDIMENT TRAPS ARE SHOWN ON THE DETAIL SHEET 6. 2. TEMPORARY SEDIMENT BASINS - 3.14 ONE SEDIMENT BASIN IS TO BE CONSTRUCTED AS INDICATED ON SHEETS 2 & 3 AND DETAIL SHEET 5. CALCULATIONS ARE ON SHEET 5. J. OUTLET PROTECTION - 3.18 RIPRAP IS TO BE PLACED AT THE OUTLET OF ALL PIPES AS INDICATED ON SHEET 4. 4. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS WILL BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDEMENT-LADEN RUNOFF FROM SHEET FLOW AS INDICATED ON SHEETS 3 & 4. SILT FENCE ALONG STREAMS AND CREEKS OR SILT FENCE ENCOMPASSING STOCK PILES SHALL HAVE WIRE BACKING. 5. TREE PRO TEC TION - 3.38 A FENCE BARRIER IS TO BE PLACED AROUND THE TREES AND VEGETATED AREAS WHICH WILL NOT BE DISTURBED TO PROTECT THE TREES AND OTHER VEGETATION FROM CONSTRUCTION EQUIPMENT AND SOIL COMPACTION. 6. TEMPORARY CONSTRUCTION ENTRANCE - 3.02 A TEMPORARY CONSTRUCTION ENTRANCE WITH A WASH RACK SHALL BE INSTALLED AS INDICATED ON SHEET 3 PHASE I. A TEMPORARY CONSTRUCTION ENTRANCE WITH A WASH RACK SHALL BE INSTALLED AS INDICATED ON SHEET 4 PHASE 2 AS IT INTERSECTS WITH U.S. ROUTE 250 AND RADFORD LANE. DURING MUDDY CONDITIONS, DRIVERS OF CONSTRUCTION VEHICLES WILL BE REQUIRED TO WASH THEIR WHEELS BEFORE ENTERING THE HIGH WA Y. 7. STORM DRAIN INLET PROTECTION - 3.07 ALL STORM SEWER INLETS SHALL BE PROTECTED DURING CONSTRUCTION. SEDIMENT -LADEN WATER SHALL BE FILTERED BEFORE ENTERING THE STORM SEWER INLETS. 8. SAFETY FENCE - 3.01 A TEMPORARY SAFETY FENCE WILL BE INSTALLED AROUND THE SEDIMENT BASIN AS SHOWN ON SHEET 3, SIGNS NOTING " DANGER, QUICKSAND, DO NOT ENTER" SHOULD BE POSTED AND EASILY SEEN BY ANYONE APPROACHING THE PROTECTED AREA. THE SAFETY FENCE SHOULD BE LOCATED FAR ENOUGH BEYOND THE OUTER TOE OF THE EMBANKMENT TO ALLOW FOR THE PASSAGE OF MAINTENANCE VEHICLES FENCES SHOULD NOT BE INSTALLED ACROSS THE SLOPE OF A DAM OR DIKE. THE SAFETY FENCE SHOULD BE CHECKED REGULARL Y FOR WEA THER-RELA TED OR OTHER DAMAGE. AN Y NECESSAR Y REPAIRS SHALL BE MADE IMMEDIA TEL Y. VEGETA TI VE PRACTICES: 1. TOPSOILING (STOCKPILE) - 3.30 TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILE LOCATIONS SHALL BE LOCATED ON-SITE AND ARE TO BE STABILIZED WITH TEMPORARY VEGETATION. .2. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED FAST GERMINA TING TEMPORARY VEGETA TION IMMEDIA TEL Y FOLLOWING GRADING. SELECTION OF THE SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR IT lS APPLIED. D0ST CONTROL: i1. DUST CONTROL - 3.39 IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST WHERE ON-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN. IN AREAS SUBJECT TO LITTLE OR NO CONSTRUCTION TRAFFIC, A VEGETA TI VEL Y STABILIZED SURFACE WILL REDUCE DUST EMISSIONS. MULCH IS ANOTHER AL TERNA TI VE IN AREAS WHERE THERE IS NO TRAFFIC. IRRIGATION MAY BE USED FOR HAUL ROADS AND OTHER TRAFFIC ROUTES. REPEAT AS OFTEN AS NEEDED. PERMANENT STABILIZATION. ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIA TEL Y FOLLOWING FINISH GRADING. PRIOR TO SEEDING THE SITE WILL BE LIMED, FERTILIZED. SEEDING SHALL BE DONE ACCORDING TO THE CURRENT COUNTY STANDARDS. THIS SHALL CONSIST OF THE FOLLOWING: TOPSOIL - 2" DEPTH LIME - 90LB511000 SF FERTILIZER - 1000LBS/ACRE OF 10-20-10 NUTRIENT MIX SEED - 180LBS/ACRE CONSITING OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-59 PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH - 80LBS11005F AFTER THESE AREAS ARE STABILIZED, THEY WILL BE MOWED AND MAINTAINED ON A REGULAR BASIS. STORMWA TER MANAGEMENT.• THE IMPERVIOUS AREA OF THE SITE IS BEING INCREASED DUE TO THE CONSTRUCTION OF THE ROADS AND HOUSES. THEREFORE, THIS PROJECT WILL HAVE AN EFFECT ON PEAK RUN-OFF RATES BY INCREASING THE QUANTITY AND VELOCITY OF RUN-OFF. IN ORDER TO MITIGATE THIS INCREASE, MOST OF THE RUN-OFF FROM THE SITE WILL BE DIRECTED TO EITHER THE EXISTING POND (THAT HAS BEEN DESIGNED TO ACT AS A STORMWA TER MANAGEMENT POIND FOR WICKHAM POND PHASE I & li) OR TO THE BIO -FILTER FEATURE IN THE SOUTHEAST CORNER OF THE SITE. THESE TWO MEASURES WILL HELP PREVENT ANY INCREASE IN RUNOFF FROM COMING IN CONTACT WITH ADJACENT PROPERTIES BY CONTAINING THE FIRST FLUSH. THE STORMWATER MANAGEMENT POND AND BIO -FILTER WILL DETAIN MOST OF THE RUNOFF FROM THE PROJECT AND SUBSEQUENTLY DRAIN I T A T A REDUCED VELOCITY. THIS WILL HELP PREVENT FLOODING AND/OR DEGRADATION OF DOWNSTREAM PROPERTIES, STRUCTURES, OR NA TURAL FEATURES. MAINTENANCE: ALL EROSION CONTROL MEASURES SHALL BE PLACED AS THE FIRST PHASE OF ANY LAND DISTURBING ACTIVITIES. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THEY SHALL BE CLEANED REPAIRED OR REPLACED AS NECESSARY THROUGHOUT THE CONSTRUCTION PHASE OF THIS PROJECT. THE FOLLOWING ITEMS WILL BE CHECKED IN PARTICULAR: 1. THE SEDIMENT BASIN WILL BE CLEANED OUT WHEN THE LEVEL OF SEDIMENT BUILDUP REACHES THE CLEANOUT POINT INDICATED ON THE RISER PIPE. 2. THE SEDIMENT TRAPS WILL BE CHECKED REGULARLY FOR SEDIMENT CLEANOUT J. THE GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WILL PREVENT DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT IT SHALL BE REMOVED AND CLEANED OR REPLACED. 4. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF WAY TO THE. TOP OF THE BARRIER. 5. THE SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHALL BE FERTILIZED AND RESEEDED AS NEEDED. SEQUENCE OF CONSTRUCTION: 1. NOTIFY ALBEMARLE COUNTY COMMUNITY DEVELOPMENT TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. 2. FLAG THE LIMITS OF CLEARING AND GRADING AS WELL AS THE STREAM BUFFER AND WOODED AREAS THAT ARE TO REMAIN. J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT 4. INSTALL THE CONSTRUCTION ENTRANCE AT THE LOCATION SHOWN ON THE PHASE I EROSION AND SEDIIMENT CONTROL PLAN. AT CONSTRUCTION ENTRANCES WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PA �IED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. SHOULD THE TEMPORARY CONSTRUCTION ENTRANCE NOT BE MAINTAINED PROPERLY OR AN EXCESSIVE AMOUNT OF SOIL FOUND TRACKED ONTO THE PUBLIC ROADWAY, THEN A PAVED CONSTRUCTION ENTRANCE, WATER TANKER TRUCK WITH 2' PRESSURE WASHERS AND A SETTLING AREA MAY BE REQUIRED BY THE EROSION AND SEDIMENT CONTROL PROGRAM ADMINISTRA TOR. 5. INSTALL THE TREE PROTECTION BEFORE ANY CLEARING ACTIVITY IS STARTED. TREE PROTECTION FENCING SHALL BE MAINTAINED THROUGHOUT ALL PHASES OF CONSTRUCTION. 6. INSTALL THE INITIAL CONSTRUCTION MEASURES SHOWN ON PHASE I EROSION AND SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AND MADE FUNCTIONAL BEFORE ANY LAND DISTURBANCE OCCURS. a. ONE (1) SEDIMENT TRAP SHALL BE INSTALLED TO COLLECT RUNOFF DURING PHASE I. SEDIMENT TRAP DRAINAGE AREA ST#1 2.90 AC. b. THREE (3) SEDIMENT BASINS SHALL BE INSTALLED TO COLLECT RUNOFF DURING PHASE I. SEDIMENT BASIN DRAINAGE AREA SB#1 4.75 AC. SB#2 3.82 A C. SB#3 6.99 A C. c. DIVERSION DIKES SHALL BE INSTALLED TO ENSURE RUNOFF IS PROPERLY DIRECTED TO THE SEDIMENT TRAPS AND BASINS. THE EFFORT SHALL BE MADE TO ENSURE POSITIVE DRAINAGE IS MAINTAINED IN THE DIRECTION SHOWN ON THE PHASE i EROSION AND SEDIMENT CONTROL PLAN FOR ALL DIVERSION DIKES. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, ANID DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION. d. INSTALL SILT FENCE (SF) AND SUPER SILT FENCE (SSF). e. INSTALL ANY REMAINING SEDIMENT CONTROL MEASURES SHOWN ON THE PHASE I EROSION AND SEL7IMENT CONTROL PLAN. 7. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON PHASE I EROSION AND SEDIMENT CONTROL PLAN AND THE COUNTY Ih;'SPECTOR HAS APPROVED THE EROSION CONTROL MEASUIRES, THE CONTRACTOR CAN CLEAR AND GRADE THE SITE. 8. BRING THE ROADS TO ROUGH GRADE. 9. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS IMMEDIATELY (AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE ,APPLIED IMMEDIA TEL Y TO DENUDED AREAS THA T MA Y NOT BE A T FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 10. INSTALL STORM SEWER, WATER, SEWER, AND OTHER UTILITIES. 11. INSTALL CURBS AND SIDEWALKS. INSTALL PAVEMENT BASE AND PAVE ROADS 12. FILL IN BASIN #1 AS AREA IS STABILIZED AND AT THE APPROVAL OF THE COUNTY INSPECTOR. 13. BRING THE REMAINING SITE TO ROUGH GRADE. 14. SEDIMENT BASIN #2 CAN BE REMOVED ONCE INLETS HAVE BEEN MADE OPERATIONAL AND COUNTY INSPECTOR APPROVES THE REMOVAL OF THE SEDIMENT B.I SIN. INSTALL ALONG THE PROPERTY LINE WHERE BASIN WAS REMO VED. 15. SEDIMENT BASIN #3 CAN BE REMOVED ONCE INLETS HAVE BEEN MADE OPERATIONAL, DEVELOPED AREAS DRAINIING TO THE BASIN ARE STABILIZED, AND THE COUNTY INSPECTOR APPROVES THE REMOVAL OF TrHE SEDIMENT BASIN. 16. INSTALL SEDIMENT FOREBA Y CONCURRENTLY WITH OUTFALL EC -1 RIP -RAP PROTECTION FROM STRUCTURE 101A. 17 PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS IMMEDIA TEL Y AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE ,APPLIED IMMEDIA TEL Y TO DENUDED AREAS THA T MA Y NOT BE A T FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS' THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 18. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE REMAINING EROSION CONTROL MEASURES. INSTALL BIOFILTER MEDIA AND LANDSCAPING. 19. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT COINTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE COUNTY ENGINEER IN ACCORDANCE WITH THE VIIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 21. BUILDING PERMITS WILL BE ISSUED FOR LOTS CONTAINING EROSION AND SEDIMENT CONTROL MEASURES UNTIL THE INSPECTOR DEEMS THE MEASURES ARE NO LONGER NEEDED. GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLA NS. 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 959 OF MAXIMUM DRY DENSITY AND 29' OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORM WA TER MANAGEMENT FACILITIES J. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWA TER MANAGEMENT FACILITIES, CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERIMISSION HAS BE OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. DETENTION POND COMPLIANCE STATEMENT 1. THE WICKHAM POND PHASE I WATER PROTECTION ORDINANCE PLAN (WPO -2006-00004) DESIGN INCLUDED ADDITIONAL VOLUME TO ACCOMMODATE A TOTAL AREA OF 12.5 ACRES WITH 252,000 SF OF IMPERVIOUS AREA OF THE PHASE 1l PROPERTY DRAINING TO THE DETENTION POND. THE CURRENT PLAN INCLUDES A TOTAL AREA OF APPROXIMA TEL Y 11.3 ACRES WITH 197,327 SF OF IMPERVIOUS AREA DRAINING TO THE DETENTION POND. THEREFORE, THE ORIGINAL DESIGN ASSUMPTIONS ARE SATISFIED WITH THE CURRENT DESIGN. ALBEMARLE COUNTY EROSION CONTROL NOTES.• ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULA TIONS. ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SI TE A T ALL TIMES. ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES -7.• ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FIL TERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIA TEL Y. MINIMUM STANDARDS: 1. MS -1. [4(1)] PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 2. MS -2. [4(2)] DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE CONTRACTOR IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS SOIL INTENTIONALLY TRANSPORTED FROM THE PROJEC T SI TE. J. MS -3. [4(3)] A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IN THE OPINION OF THE DIVISION OF SOIL AND WATER CONSER VA TION OF THE DEPARTMENT OF CONSERVATION AND RECREATION, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. 4. M5-4. [4(4)] SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS, AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND DISTURBING ACTIVITY, AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 5. MS -5. [4(5)] STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION. 6. MS -6. [4(6)] SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. B. SURFACE RUNOFF FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY SEDIMENT BASINS. THE MINIMUM STORAGE CAPACITY FOR A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AS A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL APPLY TO A BARE EARTH CONDI TION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. 7. MS -7. [4(7)] CUT AND FILL SLOPES SHALL RE DESIGNED AND CONSTRUCTED IN SUCH A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSI VEL Y WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES Ural TIL THE PROBLEM IS CORRECTED. 8. MS -8 [4(8)] CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME, OR SLOPE DRAIN STRUCTURE. 9. MS -9 [4(9)] WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. 10. MS -10. [4(10)] ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WI THOUT FIRST BEING FIL TERED OR OTHERWISE TREA TED TO REMOVE SEDIMEN T. 11. MS -11 [4(11)] BEFORE NEWLY CONSTRUCTED STORMWA TER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. 12. MS -12 [4(12)] WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT, AND STABILIZE THE WORK AREA TO THE GREATEST POSSIBLE EXTENT DURING CONSTRUCTION. NON -ERODIBLE MATERIALS SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NON -ERODIBLE COVER MATERIALS. 13. MS -13 [4(13)] WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NON -ERODIBLE MATERIAL SHALL BE PROVIDED. 14. MS -14 [4(14)] ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. 15. MS -15 [4(15)] THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIA TEL Y AFTER WORK IN THE WATERCOURSE IS COMPLETED. 16. MS -16 [4(16)] UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCA VA TED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RE -STABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULA TIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. 17. MS -17. [4(17)] WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL SUBDIVISION LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. 18. MS -18. [4(18)] ALL TEMPORARY EROSION CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION, OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 19. MS -19. PROPERTIES AND WA TERWA YS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWA TER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION. LTi 6P '� �' . U FRANK N' P fm 5: Na, 4061 � g �Ay SCALE: 1" = 30" DATE: 09113110 DRAWN BY, FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS V i ^ _J o _J z � n� V -ado Z Of LU � W _z _j Q J (29 (z o011 These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. 1 H H rrW VJ Q 0- 0 z O CL 57 Q Z Y_ U H t!-7 PROJECT NO. 100 SHEET NO. ESC -13 OF 19 W Q z J O IDC F -- z O U z LU G 0 W V) IO z Q z O H V) O ne W i ^ N u, o Ov z Q g> -ado _j Q J + O Q w C N o O w_j� 0 U '°U�� These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. 1 H H rrW VJ Q 0- 0 z O CL 57 Q Z Y_ U H t!-7 PROJECT NO. 100 SHEET NO. ESC -13 OF 19 W Q z J O IDC F -- z O U z LU G 0 W V) IO z Q z O H V) O ne W SEDIMENT BASIIP�1 SEDIMENT BASIN I DRAINAGE AREA: 4.75 WET STORAGE: ELEVATION AREA OF +CONTOUR (SF) VOLUME (CY) 598.00 1970 0 599.00 2 216 82 600.00 3048 184 601.00 3662 308 601.50 39180 378 602.00 4305 456 602.50 4638 538 603.00 4,978 627 603.50 5325 722 604.00 5680 825 604.50 6042 933 605.00 6412 1049 605.50 61789 1171 606.00 71� 73 1,300 606.50 42 BARREL LENGTH (FT) WET STORAGE REQUIRED (CY) 318 DEWA TERING ORIFICE ELEVATION (FT) 601.50 WET STORAGE PROVIDED AT THIS ELEVATION (CY) 379 AVAILABLE VOLUME BEFORE CLEANOUT (CY) 159 CLEANOUT ELEVATION (FT) 600.04 DISTANCE FROM CLEANOUT TO ORIFICE (FT) 1.46 DR Y STORA GE: 5.50 DRY STORAGE REQUIRED (CY) 318 PRINCIPAL SPILLWAY CREST (FT) 603.50 DRY STORAGE PROVIDED AT THIS ELEVATION (C Y) 344 DIAMETER OF DEWA TERING ORIFICE (IN) 4 DIAMETER OF FLEXIBLE TUBING (IN) 6 RUNOFF.- 2. 02/2$/11 - ACSA COMMENTS C 5.0 t (MIN) 16 12yr 3.36 Q2yr 7.98 125yr 5.45 Q25yr 12.94 PRINCIPL SPILL WA Y.• A VAILABLE HEAD (FT) 0.7 DIAMETER OF THE RISER (IN) 27 SPILL WA Y CAPACI TY (CFS) 13 DIAMETER OF TRASH RACK ON) 42 BARREL LENGTH (FT) 48 HEAD ON BARREL THROUGH EMBANKMENT (FT) 750 DIAMETER OF BARREL ON) 18 DESIGN HIGH WATER 604.50 TOP OF DAM (FT) 606.50 TOP WIDTH OF DAM (FT) 8 BOTTOM OF BASIN (FT) 598.00 APPROX. BOTTOM DIMENSIONS 105 x33' UPSTREAM FACE SLOPE 2:1 DOWNSTREAM FACE SLOPE 2:1 BAFFLES: LENGTH OF FLOW, L (FT) 32 EFFECTIVE WIDTH, We (FT) 155.56 L/We 0.21 LENGTH OF REQUIRED BAFFLE (FT) 56 (AS SHOWN ON PLAN) COLLARS: DEPTH OF WA TER A T SPILL WA Y CREST (FT) 5.50 SLOPE OF UPSTREAM FACE J. 1 SLOPE OF BARREL (7) 2.081 LENGTH OF BARREL IN SA TURA TED ZONE (FT) 42 NUMBER OF COLLARS REQUIRED 2 DIMENSION OF COLLARS 3.5'x3.5' 630 628 626 > 6a, 1 SEDIMENT BASIN N GRAPHIC SCALE 20 0 10 20 40 ( IN FEET) 1 inch = 20 ft. 2 SEDIMENT BASIN -d2 80 V,ALT I 0 � L I � a + 4 U FRANK Y. PURI, No. 26 �QNAL E� SCALE. 1" = 30' DATE: 09/13/10 DRAWN BY. FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02/2$/11 - ACSA COMMENTS 3. 03/31/11 - RESPOND TO COUNTY COMMENTS V V z w W U) z O W z (D LLJ 0 0 0 z Z> �w V �J J O> n4 O �2 m co N 0- ZO�`°= w J � 0 Q- 0 n�p=r�im These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z � � z O U 0 � Q J � 0o oC LU < Qo '-' U LUz i�: J C!) 5 > 0 Q � = LU 0 �-- z �- o C) LU m U z D J � z 0 z J w r < _ LU t.._.� < 2LU 0 U) 0 U z Q 0 z U o Cly V) 016 o W w PROJECT NO. 100 SHEET NO. Esc -15 OF 19 wSALT'II flfiL FRANK Y. POHL a No. 40626, SCALE: 1" = 30' DATE: 09113110 DRAWN BY: FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS U Z ry w w J _z (D U) z o wOIN ZN 0 w O O Z > z > U _ gw ..J O> �r-¢� V, ° LU _j �� a O o o='t-'4-� These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z Q W V) U tD < 0 � a=. J i m oC LU z Q H Q o = w O Q o rN �. W U ® Cn m J }i z `` D J z w O z < z QW o w QOM o � � z U z O o U V) O 66 °C LU LU PROJECT NO. 100 SHEET NO. ESC -16 OF 19 SCALE; 1" = 30' DATE: 09113110 DRAWN BY. FVP REVISIONS: 1. 02-14-11 - RESPOND TO COUNTY COMMENTS 2. 02128111 - ACSA COMMENTS 3. 03131111 - RESPOND TO COUNTY COMMENTS Z w LU J _z U) z w01, o z 0 O U �w J 0 > a O? w 00 N 0 7 '0 0 � O 0 a=���' `.L C) to U d` ' Cl) These plans and associated documents are the exclusive property of POHL CONSULTING and may not be reproduced by any means in whole or in part and shall not be assigned to any third party without the express written consent of POHL CONSULTING. z aC J r N H F— w U Q 0� _I m � � w z < Q a. LU � z J Urfoo Q =ne 0 W J z 0 W U C) m J 2! 0 Q z 0 z Q w °- aC w a J w < 0 `� U z 0 z o U U) to 0 06 nc w w PROJECT NO. 100 SHEET NO. Esc- 17 OF 19 2. EXCAVATE A 4"X4" TRENCH 2"x4" WOODEN FRAME fl�'���1 1. SET THE STAKES. UPSLOPE ALONG THE LINE OF DROP INLET 6 MAX. WITH GRATE �K Ve POHL 0>0 STAKES. 4 �t i 1.5' MAX. o FRAME N4 I'" _ �---- /,1 - i ` �``\ / SINAL EACs FLOW 3' MIN. '�! SCALE: 1" = 30' ' DATE: 09/13/10 4„ GATHER DRAWN 8Y: FVP EXCESS � � 3. STAPLE FILTER MA TERIAL 4. BACKFILL AND COMPACT - AT r TO STAKES AND EXTEND THE EXCA VA TED SOIL. - - CORNERS �j REVISIONS: IT INTO THE TRENCH. 18 MIN.- GRAVEL* (72"MIN. DEPTH) 1. 02-14-11 -RESPOND TO PERSPECTI VE VIEWS COUNTY COMMENTS RUNOFF WATER WITH SEDIMENT GRAVEL FILTER * -12" STAKE 2. 02/28111 - ACSA COMMENTS %� RUNOFF WATER WIRE MESH _ FILTERED WATER 1 RESPOND TO ti -'� COUNTY COMMENTS FABRIC a FLOW _..•-/i -__--� 1111-11 it 11 11 \\\\/\\\\ 1 ' MIN. SEDIMENT WIRE MESH SHEET FLOW INSTALLATION �� r\ \//\/ �� o - (PERSPECTIVE VIEW) \��\\\\/ WATERFIL ED �IIII d SEDIMENlI �. ".. . a: C _ FLOW SPECIFIC APPLICATION CONCRETE GUTTER 12' CURB INLET COMPACTED SOIL A A B ELEVA TION OF STAKE AND THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE FABRIC ORIENTA TION HEAVY CONCENTRATED FLOWS ARE EXPECTED, BUT NOT SPECIFIC APIPLICATION WHERE PONDING AROUND THE STRUCTURE MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE TO ADJACENT THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS � SPECIFIC APPLICATION STRUCTURES AND UNPROTECTED AREAS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A CAUSE INCOINVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND FLOW POINTS A SHOULD BE HIGHER THAN POINT B. RELATIVELY PLFLAT AREA SLOPE NO GREATER THAN 59" WHERE THE INLET SHEET OT * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE UNPROTECTED AREAS DRAINAGEWA Y INSTALLATION AGGREGATE. \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT * j�///�///�///�/// /jam/j�/j�/j�/�//�//jam//�//\j/j/j�/j (FRONT ELEVATION) APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HGHWA Y GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. 4.5' Min. Va. DSWC MEDIANS. Va. DSWC PLA TE# Va. DSWC PLA TE# Va. DSWC PL Va. DSWC sF CONSTRUCTION OF A SILT FENCE 3.05-2 SIL T FENCE �P GRA VEL AND WIRE MESH DROP 3 07-2 PLATE# PLATE# U (WITHOUT WIRE SUPPORT I P DROP INLET PRO TEC TION 3.07-1 INLET SEDIMENT FIL TER I P GRAVEL CURB INLET SEDIMEN T FIL TER DD TEMPORARY DIVERSION DIKE 3.09-1 3.07-6 O J NO SCALE NO SCALE NO SCALE NO SCALE NO SCALE _J � n (D NOTES Z w 1. APRON LINING MAY BE RIPRAP, OR GROUTED RIPRAP. w PRESSURE RELIEF 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING _J z HOLES I/2" DIA. s3I�0�0E ,b,DEQUATE r n INSTALL COLLAR WITH STRAPPING PLATES 1.364 AND 1,36e. 0 CORRUGATIONS VERTICAL x'°�`TH"E CAP J. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6"- �.r J W o 4. FABRIC UNDERLINER REQUIRED FOR ALL OUTLET PROTECTION AREAS. 0 0 (D C4 o A A COLLAR TO BE SAME GAGE AS THE /� `l' `� 0 0 PIPE WITH WHICH IT IS USED J °° V Z g J ao CONTINUOUS WELD DEPTH ° ° ° ° ° ° ° J O > f2 N TACK WELD m VARIES A$ A ° A J o w 00 N o 0 0 0 0 1/2 x2 SLOTTED HOLES FOR PERFORATED POLYETHYLENE FOR , DRY " ° ° ° S �, U 0 BAND - DRAINAGE TUBING, DIAMETER 3/8" DIAMETER BOLTS (TYP.) _rol0 ° Z VARIES {SEE CALCULATIONS IN ° ° ° ° -T- APPENDIX 3,14-A)° ° ° z M O PLAN 2„ I 2„ ° 0. D. OF PIPE I i ° ° ° c) -0 TACKWELD - -_� --42 " DIE 0 0 0 0 ° ° V ALL AROUND 1 2" AND -1 I-• 12" MIN. I " FtRNCO-S YL COUPLING STORAGE 15„ ° ° ° These plans and associated SLOTTED HOLES ° ° documents are the exclusive ° ° ° 8" MIN. AT 8" C.C. DEWATERING ORIFICE, property of POHL CONSULTING T ° CONTINUOUS WELD SCHEDULE 40 STEELlUI3 1 -FOOT MiNIMtM, ° ° ° ° y p #6 X 72" �WELD BOTH SIDES GrJ#�?UGATED METAL RESER APPENDIX 3 VARIES CALCULATIONS IN ° ° °° ° ° and �a means in not be reproduced SPACER BAR �� part and shall not bele or in (TYPICAL) SUPPORT CORRUGATED METAL PLAN assigned to any third party BAR SIZE SHEET WELDED TO .'.'. .27"...-.-.- (#s REBAR MIN.) CENTER OF BAND La consent of POHL CONSULTING. 2 ACRES OR LESS OF DRAINAGE AREA: without the express written ELEVATION OF UNASSEMBLED COLLAR SECTION A -A END SECTION NOTE. WITH CONCRETE RISER, USE PVC SC,FI�,�CULE 40 STUD ` 6 NOTES: ISOMETRIC FOR DE`VVATERING OREFICE ° 3 1. THE CYLINDER MUST BE FIRMLY FASTENED TO THE TOP OF NOTES FOR COLLAR: FILTER CLOTH ° ° ° � (OPTIONAL) THE RISER. d 1. ALL MA TERIALS TO BE IN ACCORDANCE WITH CONSTRUCTION AND * 2. SUPPORT BARS ARE WELDED TO THE TOP OF THE RISER OR CONSTRUCTION MATERIAL SPECIFICATIONS. DRAINAGE TUBING SHALL COMPLY 4Y1TFI ASTM FSb7 ATTACHED BY STRAPS BOLTED TO TOP OF RISER. 2. UNASSEMBLED COLLARS SHALL BE MARKED BY PAINTING OR TAGGING TO ANIS AA5MT4 M294 (DOWNSTREAM VIEW) SECTION A - A IDENTIFY MATCHING PAIRS. TOP IS 16 GAGE CORRUGATED METAL OR 1/8" STEEL PLA TE. J. THE LAP BETWEEN THE TWO HALF SECTIONS AND BETWEEN THE PIPE COARSE E z PRESSURE RELIEF HOLES MAY BE OMITTED, IF ENDS OF AND CONNECTING BAND SHALL BE CAULKED WITH ASPHALT MASTIC COARSE AGGREGATE CORRUGATIONS ARE LEFT FULLY OPEN WHEN THE TOP IS A T TIME OF INSTALLA TION. Q La Do 3Do Dso d A TTA CHED. 4. EACH COLLAR SHALL BE FURNISHED WITH TWO 1/2" DIAMETER RODS -FLOW 7 3' J WITH STANDARD TANK LUGS FOR CONNECTING COLLARS TO PIPE. oP� 12'.94 cfs 12 1.5' 4.5' 6" 6" CYLINDER IS 16 GAGE CORRUGATED METAL PIPE OR FABRICATED FROM 1/8" STEEL PLATE. Va. DSWC Va. DSWC Va. DSWC RECOMMENDED DEWATERING SYSTEM PLA TE# Va. DSWC Va. DSWC PLA TE# PLA TE# 3.14-15 PLA TE# PLA TE# U I - VORTEX DEVICE DESIGN CORRUGATED METAL ANTI -SEEP COLLAR FOR SEDIMENT BASIN PIPE OUTLET CONDITIONS ROCK CHECK DAM w ANT 3.14-10 3.14-13 OP 3.18-1 CD 3.20-1 NO SCALE NO SCALE NO SCALE NO SCALE NO SCALE Q UjSM&L OR MEDIUM TUM �_ _ _ - _�� .��� 12fk Q.G. - 1- CALIPERSEEM SOD TURF 8ft O.C. _- _ W COVER GROUND -COVER PLL)GS - - _ __ -- _ - _ (e.g.ERIWINKLE - _ = - - - AC;(;EF `. `; 3. SIJ -2A ASPHALT TO I = - 1 ft O.C.g -- -- __ LU -_ _ _ - CC7�rRSr:. - - J PACHYSANDRA _- _ -. -��* - _ - � EXISIINC - - - _ ... . ,.........:.. ..::•, 3 MINIMUM - _ _ _ -= --- - - � - - � �� j =--_-- - l PA\ DVFNT .. , •. . HARDWOOD �__ - SHRE>�ED H D �I� -- .s {, MULCH - _ --� { e� F MULCH -- � ��� �:- - _ - - - - -- - - 10- Lu ne�yy � A �y 2 vy TOP SOIL/20% LEA � =-'.[ - _ . _ -: 1 -- - - - CIO Sr]/e SAND/30% ! -- --r'-= - . 6" j� iN 2 A AG -R GAIL._ J3r{'-� - _ _ - OPTION _ - _ -_ _ - - - - _ 1 TI _ - � SNOW FENCE MULCH PLANTING BED � _ OPTIONAL SMALL = _ _- - - - -_ S;G�, � - = _ - _ LIJ - _ = _ s I n _--- OR MEDIUM TREES _- = - - - CrU<<d ..EJt. , I�.,� n - T PAVi":1 - _- - - fn S5 ..... /5 ] -` fe O.C. 11" CALIPER - = - ACt L�� - _- - - O 0 TURF SQSa`C u - - - - _ _ = � - rrr�w COVER - - ^oJ i I 7 %./J 2rC F 7 AYf�,. C'.`!r'iT- e,_ - - - 2ro- '' !' ����." -,..... _ r� BOARD FENCE tillf'Mr - - - - \/ - - - - CORD FENCE T _ - = _• -- POSP'- VI: DRAINACA' PLASTIC FENCE _ - - _ ' ; rz - - - �- - _- _ ��d�c;: f Yi N_ ILL WID! r - - -\LS{7% SAND/30% TOP SOIL 20'90 LEAF MULCH �- -=- _- - _- - -_ ui ECRESS AN:f FGR SS RI � .; ,� / _ _ _ _ _ -_ ---- _ \ _ -r-- ;� - � `I,�r�, r�,"ca c�,..vlc.r CORRECT METHODS OF TREE FENCING OPERATION ti OPTION 2LLJ - - = = - = - - r06 TURFCOVER - �` - U - - _ PLAN * -t� Uj NATIVE GRASSES/'SEDGES - _ - _ PLANTED IN PLUGS AND (}R SEER NAL SMALL - _ � -- - - - - OPTIONAL - _ -- - -- 1 - 1 .,I\. {I U-,!1:VE. Ia11NNAt I; .f - WITH HEAVY STRAW t+AiJLCH COVERED _ _ IUM REFS _ -_- -- _ - _ - _ - :-- -- OR 1ulE© - I -- - - _ _ MATTING. -- - _ - N CONTROL M _ - - _ R d Cfl 2 E 'OS -` WITH EC _ - 7 20 O.C. 1 CALIPER! - _ - - !�INAPPIN(, - - �" In f3 SOD TURF - - - - - - __ = _ _ FILTER CL .T k i..._/f OVER - - _ = � � CT! N A -A j TOP SOIL/20% LEAF MULCH 50% SAND/30% � SOL % / PROJECT NO. A IiIIini wmi water to of 1 i iiAl mrt,.t �+� �I�,. t�tlletl 71t � Ittu�u�Itutx 1 Int It �tll a - - - + R TOP BLUE�flINT - ' - --- _ - - EXAMPLES. ED -- _ _ - -- -- -- - 7 e �iltfl a �1all�ekelf 1 , � 11 , f'o _ 111<�IofEs plc e �hui F 4�;�,.11 lig,.► _ F-_: - �d TUFTED HAIRGRASS BIRDS f FOOT-TREEFfl1L, � � CORRECT R ERCT TRUNK � _� ,�R,� _I�.��� __ -_ -��� - •, _ - - ---_ - ,. -__ �. �,� w `1171{� il�G il�� �I dill the f'Ilt'i �i�C � to itll - SWITCHGRASS, dt WILDFLOWER MIX = = _:- - -- �_�- - - ccoll,.t;�iii��Ie,.,.tue. �� a51i ��a#et ill��,-f be c� � fox OPTION 3 --' - - _ - v w - - SHEET NO. --_ - � ' e{llllielit ,. all tie ?re���Iit+w{N fi ill - - ITAt�LE FOR CONDITIONS._ _- - - _ - -- _ � . � ?I Cid ecl ,. �tt11ll., 11 �1 Ya x eluc�� a ,.+°{�i111E'ttt. � , la � _ �.F�-m - _ su- ltl TRIANGULAR BOAR G WILDFLOWER MEADOW - ., ., . , ., � FENCE�- _ eiateallx` ;oonx1 cl1 aux , ditches 0I �� atei coul 4es. - - - -- ESC 19 - - B10FILTER VEGETATIVE COVER OPTIONS _ _ PAVED WASH RACK TREE PROTECTION S S F SUPER SILT FENCE NO SCALE - -e+- - � _ _ - -- N0 SCA!I" NO SCALE NO SCALE OF 19