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Home My WebLink About20072022 Ver 2_More Info Received_20080609 Horvath Associates, PA ) "99V WE ARE SENDING YOU attached via Civil Engineers • Planners • Landscape Architects 16 Consultant Place Ste. 201 Durham, NC 27707 PO. Box 51806 Durham, NC 27717-1806 (919) 490-4990 Fax (919) 490-8953 TO -:J70 , If lO ?/ J? A T 'E c. VP. /?raLL ??A? Al ' WE ARE SENDING YOU attached via ? Shop drawings Plans ? Specifications @P ETM DATE ? ?D nO?? JOB NO. ATTENTION RE: - I ?R DI - v??rr .S ? the following items: Ci /?00/e/6/??ryf /rA'Gt' tv COPIES DATE NO. DESCRIPTION 5 M THESE ARE TRANSMITTED as checked below: For approval ? For your use ? As requested ? For review and commentj? ?.?? 2;118 REMARKS COPY TO n /l n SIGNED C,Yvr1`,t r If enclosures are not as noted, kindly n#tify us at once. SIERRA PRE-CONSTRUCTION NOTIFICATION SECTION 4011404 PERMIT AND ' NATIONWIDE 29 PERMIT APPLICATION NARRATIVE ADDENDUM -JUNE 9T„ 2008 Sierra ' Doc Nichols Road Durham, NC HA Project Number: 0713 ?N 9 4101- I Summary of Chances: ' This addendum is to reflect changes in the impact summaries for the Sierra Subdivision caused by a relocation of the bypass channel for Wetland # 1 B. The ' channel was relocated to remove a sharp bend making the channel straighter and more uniform. The contents of this addendum include any sheets or calculation pages that were changed as a result of moving the Wetland # 1 B ' bypass channel, Prepared by: Horvath Associates, PA ' Civil Engineers - Planners • Landscape Architects P. Q. Box 51806 ' Durham, NC 27717 (919) 490-4990 (919) 490-8953 (FAX) rr rr I rr rr ? .?. fr. Lij x,, N rte- t ?,X > 02 M I- fir' CV W 41t, d.? < 00 0- C%4 LLJ u V) UMW i? U m Z 04 r CL ?w Lij ( i a- r rr ?} U W m ` w (4 LL 0 lot V) 7 C CL Uj ti Q c/7 ' ?a 1 ?rSr? " Uj Q 00 /'? r.1 f ? • a- Fes- 0 x !?J ?y `• r J f x W CL C) LL_ 1 ? t ww/? ?? r. ? '? \./ r (?i U. r.r "1 r .r f, r W O _ C) Z uj " ' 1^? C ?rJlt11M1 Y ? \ bYi ? , 1 ?. r " ? ? "4 f. ?? w is t r ? r Q O Q V J N tea CV U') V) LLJ > c):: tT-j F- V V) LL - 1 r r W 0, c, V) LL QQ .• ? . ? r?; ;r N 00 (n W ?? sr LL. ri LU r X .. ? Q f Mi? f?4,'? h- ' W 1. 44 U_ . f 011 CV u 0 G ?A CN r'- ? " ; ,. ?,?'? ?' rte. e}' •."' it i rs V) f- 1- -? -? M s r ?. t ` , 1 r W /.r?n'\^1` 1 P 1 1r {?? Q f CL f , f W Q C Qj N W 0- ' Y /,?//? , W w U C) N ,?`4 `? 1 I 4 fi ?? W O I_^ V) U_ V) 0 a V Z O Z j Q 7 t7u 06 Z rLu a-, (,I U_ ui Ll , •' rf f ?r V) _j % 4 ?p S ll?i"NN?' k rtY MW ? ? r , `?4?? 1 ` i r 4y SEE SNT 4 IMPACT - F0R41R04EI._k .._.. AREA # A . ---» IN(PAC`f re 1? SEES 5 FOR OFIL DB #I r? ? y ?? y?. 1 \ k ?' nue 4, n ., s y f (Culvert) TOTAL 12,771 CROSSINGS ALL BE AERIAL E R AL OR INSTALLED BYJACK AND BORE' NOTE: BYPASS DISHARGES INTO UNBUFFERED IMPACT MAP #11 Proj # STREAM 0713 , Sierra Drwn By: JC Dwg No Leesville & Doc Nichols R Chk B : JR 3 Date: 11/21/07 Durham, North Carolina Scale: It 100' 3 of IMPACT NO. TYPE SO. FT. (CH and WL) LINEAR FT. CH ONLY Buffer & NB z1 2,361 ---- Streom (Sonitary Z2 2,021 ---- Sewer) TOTAL 4,392 1A NB zt 9,411 137' Buffer do z2 4,360 ---- Stream 0 i / 1 J / 1 I ? r1 / t 1 t I?'e StE S HT 7 FOR OFILE IMPACT REA #2, I J ? fir' h n + x 4 J p (; 011 y s MPACT; ?. AREA #2A 0 OF, DB f?, IMPACT TYPE SO. FT. LINEAR FT. N0. (CH and WL) CH ONLY z Buffer Z1 NB 4,526 ---- Only Z2 16,435 ---- (Sonito Sewer TOTAL 20,961 2 NB Buffer Z1 1,415 ---- y Z2 12 0 - - - - 1 B B pose Chonnel) TOTAL 93 7 2 Buffer N® Z1 681 ---- Only Z2 289 ----. 2 Bypass Chonnel) TOTAL 970 Buffer NB Z1 768 ---- Only Z2 490 ---- (7 Bypass Chonnel TOTAL 1,258 NB Buffer do Z1 2,164 ---- ?St re(ani tom ry Z2 604 - - wer) TOTAL 2,768 IMPACT MAP #2 Sierra Drwn By: JC Leesville & Doc Nichols R Chk B : A Date: 11/21/C Durham, North Carolina Scale: V'=100' Proj # 0713 Dwg No 6 3 of 1 1 1 1 1 1 1 1 1 1 1 1 Cil1 ' t; ri 401 Tray m,',f ? wr9r?aii #r71r>?a?.f `;??r?1t?'icary Wetiond Impacts: Total Wetiond Impact: _ 11,956 sq ft ?_? 0.274 acres Area Area Impact #6 (sq. ff) (acres) 8A 2,628 0.060 9A 9,328 0.214 Stream Impacts: Intermittent Perennial Total NWP 29 Stream Impact: 0 295 295 linear feet Impact Stream Type of Perennial Impact Impact 0 Nome Impact or Comment length (if) Area (sf) intermittent I A Earthquake Calvert Perennial W/ 137 346 Creek Dissi ator 4C Earthquake Culvert Perennial W/ 158 594 Creek Dissi atar Buffer Impacts Requiring Mitigation: Impact # Type of Impact Stream Zone 1 Impact 4,526 s q. feet 2 SS Parallel Intermittent 0.104 acres 834 s q. feet 3 SS Parallel Intermittent 0.019 acres l i 149 s q. feet 4A SS Parallel perenn a 0.003 acres 419 s q. feet 5 SS Parallel perennial 0.010 acres 1.851 s q. feet 5A SS Parallel perennial 0.042 acres 52 s q, feet 6 SS Parallel perennial 0.001 acres Total Zone 1 7,831 s q. feet Impacts 0.180 acres Note: The only stream impacts requiring mitigation are the ones listed above E?i11 ( irj;, 1 1 1 1 1 1 1 1 1 1 1 1 1 ?.:.li(4011 IfI1s )(v,t'>tminl+;ry avr?r?III Iti11)(v i `,r;tr m(,Iry. Buffer Impacts: Total Zone 1 Impacts: Total Zone 2 Impacts: Total Buffer Impacts: [so. feet] ]acresl 58,985 1.354 89,303 2.050 148,288 3.404 Impact Zone 1 Impact Zone 2 m pact Total Im act 1 2,361 ?q._feet q _ 2,021 s , feet 4,382 s q, feet 0,054 acres 0.046 acres 0.101 acres 1 A 8,411 sc .feet 4,360 s . feet 12,771 L q, feet 0.193 acres 0, 100 acres 0.293 acres 7,8390 s q, feet 17,334 s q. feet 24,724 s q, feet 0.170 acres 0.398 acres 0.568 acres 2A - 2,164 s q. feet 604 s q. feet 2,768 s q. feet 0.050 acres 0.014 acres 0.064 acres ,3 3,016 s q. feet 5,392 s q. feet 8,408 s q. feet 0,069 acres 0.124 acres 0.193 acres 3 2,786 s q. feet 110 s q. feet 2,896 _ s q. feet , 0,064 acres 0.003 acres 0.066 acres 3B 1,304 s q, feet 4,491 s q. feet 5,795 s q, feet 0,030 acres 0.103 acres 0.133 acres 4 4,187 s q, feet 2,088 s q. feet 6,275 s q. feet 0.096 acres 0.048 acres 0,144 acres 4A 899 s q. feet 6,475 s q. feet 7,374 s q. feet 0,021 acres 0.149 acres 0.169 acres 4B 2,911 s q. feet 3,097 s q. feet 6,008 s q. feet 0.067 acres 0.071 acres 0,138 acres 4C: 10,603 s q. feet 6,444 s q. feet 17,047 s q. feet 0.243 acres 0.148 acres 0.391 acres 5 1,753 s q, feet 4,932 s q. feet 6,685 s q. feet 0.040 acres 0.1 13 acres 0.153 acres 5A 4,255 s q. feet 13,248 s q. feet 17,503 s q. feet 0.098 acres 0.304 acres 0.402 acres 6 2,215 s q. feet 10,602 s q. feet 12,817 s q. feet 0.051 acres _ 0.243 acres 0.294 acres 7 0 s q, feet 1,960 s q. feet 1,960 s q. feet 0,000 acres 0.045 acres 0.045 acres 8 0 s q. feet 4,935 s q. feet 4,935 s q. feet ,000 acres 0.113 acres 0.113 acres 9 1,819 s q. feet 1,210 s q. feet 3,029 s q. feet 0.042 acres 0.028 acres 0.070 acres 11 2,661 s q, feet 0 s q. feet 2,661 s q. feet 0.061 acres _ 0.000 acres 0.061 acres 12 250 s q. feet 0 s q. feet 250 s q. feet 0.006 acres 0.000 acres 0.006 acres 13 2,187 s q. feet 4,827 s q. feet 7,014 s q. feet 0.050 acres 0.111 acres 0.161 acres zsi(k Pfl= ': i 4 y , S I t mpac SF Zone Comment Stream Area 1 2361 1 Ss Pero jtermittent 1 693 2 ss perp intermittent 1 1328 2 ss perp intermittent 1 68 S ss perp intermittent i A 8411 1 road cross perennial I A 2880 2 road cra.s p,.:rennial 1 A 1480 2 road ?'.rr}s? per?nniol 1A 1382 1 LCt `?I ', - rI r > )rJ!Y I A 346 S road cro,;s pf,,,enniai 2 1304 1 ss parallel intermittent 2 2397 1 ss parallel Intermittent 2 425 1 ss parallel Intermittent ' 2 16435 2 ss parallel intermittent 1415 1 V;,,!l(v'1d 18 Channel 2 120 2 Wetland 1 B Channel intern :t±r,nt 2 768 1 Wetland 7 Channel intermittent 2 490 2 Wetland 7 Channel intermitlf.-nt 681 1 Wetland 2 Channel rater, ttt;r)t 289 2 Welland 2 Channel fnterm ttent 2164 1 >s r>erp intern 1 ->r:t 604 2 intermittF.,ni >1 82 perp intermittent 3 $34 1 ss parallel intermittent 3 5392 2 ss parallel intermittent 3 2182 i ss perp intermittent 3 77 S ss perp intermittent ' 3A 2786 1 ss perp pr`r(,nt)t?ai 3A 110 2 ss perp pet(- nniai 3A 3B 161 3906 S 2 ss perp ss parallel perennial perennial 38 644 1 Wetland 5 Channel perennial 3B 404 2 Wetland 5 Channel perennial 3B 660 1 wetland 7B Channel perennial 38 181 2 Wetland 7B Channel perennial 4 1899 1 ss perp intermittent 4 2298 1 ss perp perennial 4 978 2 ss perp perennial 4 1110 2 ss perp perennial 4 130 S ss perp perennial 4 63 S ss perp intermittent 4A 3447 2 ss parallel perennial 4A 2438 2 ss parallel perennial 4A 750 1 Wetland 8A Channel perennial ' 4A 590 2 Wetland 8A Channel perennial 4A 149 1 ss parallel perennial 4B 2180 1 ss perp intermittent 4B 964 2 ss perp intermittent 4B 1081 2 ss perp intermittent 4B 71 S ss perp intermittent 4B 731 1 Wetland 9 Channel intermittent 4B 1052 2 Wetland 9 Channel intermittent 4C 10603 1 road cross perennial 4C 3140 2 road cross perennial 4C 3304 2 road cross perennial Impact LF Comment Stream Area I A 137 road cross perennial 4C 158 road cross perennial *Bold and Italicized = mitigation required Stream Summary Table intermittent o linear feel f'erenniai 295 linear Ul innNnn tiommmv Ynhla Zone I W Zone 2 fl.- Im acts 7.831 0 M)ItirAer 3 1.5 Credits needed 23,493 0 Credits Approved 87,060 14,948 Wetland Summary Table 1 square < t 1,956 Total impacts 0.27 acres Temporary Erosion Control Summary Table 2.767 square feet Total Impacts 0.064 acres F 1 1 1 1 1 1 1 1 1 1 1 i 1 of In „? x° t°, Impact Area SF Zone Comment Stream 4C: 594 read cross perennial 4C: 1385 T EC&S perennial 5 419 1 ss parallel perennial 5 625 2 ss parallel perennial 5 2837 2 ss parallel perennial 5 686 1 Wetland 8B Channel perennial 5 1060 2 Wetland 8B Channel perennial 5 648 1 Weiland 6 Channel perennial 5 410 2 Wetland 6 Channel perennial 5A 2404 1 ss perp perennial 5A 863 2 ss perp perennial 5A 139 S ss perp perennial 5A 6272 2 ss parallel perennial 5A 497 1 ss parallel perennial 5A 1162 1 ss parallel perennial SA 3887 2 ss parallel perennial faA 2226 2 ss parallel perennial 5A 192 1 ss parallel perennial 1) 10602 d s3 K?; ar?.allF,M perennial 14 2163 1 s, p(-rt) Intermittent ea 78 `i ss p(!rl) intermittent 6 62 1 ss parallel Intermittent 1960 2 ss parallel perennial 3 4935 2 ss parallel perennial 8A 2628 W ss parallel wetland 9 1819 1 ss perp perennial 9 604 2 ss perp perennial 9 606 2 ss perp perennial 9 584 S ss perp perennial 9A 515 W ss parallel wetland 9A 8813 W ss perp wetland 11 749 1 road fill intermittent 11 1912 1 road fill intermittent 12 250 1 road fill intermittent 13 679 1 Wetland 2B Channel intermittent 13 2690 2 Wetland 2B Channel intermittent 13 812 1 Wetland 2C Channel intermittent 13 574 2 Wetland 2C Channel intermittent 13 696 1 Weiland 3 Channel intermittent 13 1563 2 Wetland 3 Channel intermittent 1 1 1 1 1 1 1 1 1 1 1 1 1 1 r r J c c .? v e V d a d c D ? ,u Vi U v' z Q) n.• L U cct V/ c C'4 m LO 0 N m c n N m 'd m ?t . f.. 0 0 0 0 C7 C9 c ?. o ? ci o o ? a c? IWO a r 1L N O C a C1 a a (? .= N Vti Vv u/t C C3 0 a _a / / 5 N N S m a a C ooa? v m c c c o 0 .c .c c U U cn C W c o c L U a a o A iA 109 N o° .? • ? c i 0- 0 4) a 0 ' 4s rr o 00 a= E a a E a . o; a Q Q ,a a a ?` U Lr) g •? o ? a N 75 v Q c II Z' 0 o d U o v (D t c a a _? V q CCV m C ? Sri c d 0 ` a O Q) ,p7 r o N " C3 +? II iE i! ii a ? N b h n u n O N I s `v c a N d? fY ? N a a QC Ci a co v N if if it H 0 E a u a E U a Q .? a E a N a > .. 0 •_ 3c c z c - c a a a a a s E U c c U E s u cU x E E ' i o o t { Q fL a g C, a E kn .a IV o. a ? OR Q Q ?; a N N a c N ? ti c d u, to co co co Cd 4 If n n N U 40 O N 41 C > V ?a C t cc C N a -IZ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ?- B Channel ID A B C Channel Slope Channel Liner (ft) (ff) (ft) Min (%a) Max (%) DB 14 1 BOUT 2 3 2 1.0 12.0 Class I Riprap DB ## 7 IN 2 2 2 1.0 5.0 Class B Riprap DB # 7 CUT 3 0 1 10.0 30.0 Concrete DB 8A OUT 3 0 1 3.0 40.0 Concrete DB ## 8B OUT 2 2 2 3.0 12.0 Class I Riprap DB 9 CUT 3 0 1 2.0 40.0 Concrete