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HomeMy WebLinkAbout20052116 Ver 4_Exhibit A, applicant's preferred alternative_20181213Exhibit A - Applicant's Preferred Alternative Impacts and Plans Caleb's Creek Applicant's Preferred Alternative Individual Permit Imngc,,t T,nr,atinn Man USACE AID#: SAW -201` HUC: Pror Croc, Exil ■ • • • • • • • • • • • • • • • • • ■ Con -•-•-•-•-•-•- Prol ❑ Mixed Use ❑ Residential - Low Densi ❑ Residential - Medium D Residential - High Dens Commercial / Office ❑ Amenity NSchool —•—•—•—•- Perenn sammeameaft Intermi Wetlar DRAFT Open Water WETLANDS . ,4 & WATERS, INC. 1,000 ftj U-12 U-1 1N Caleb's Creek Project Phasing Schedule UT to Abbotts Perennial Corps 6 40 Mitigation Required Mitigation Payment Individual Permit Impact Inventory Phase Impact Areas (LF) Deadline U-3 Sewer R-6, R-7, R -8a, R -8b U-1, U-2, U- Intermittent Corps USACEAID#: SAW -2015-01697 1 U-5 Sewer Abbotts Creek Perennial Corps 4, U-6, U -7a, U -7b, U -8a, U -8b, U- 60 U-6 HUC: UT to Abbotts 10, U-12 289 January 31, 2022 40 2 R-9, R-10 U-9 170 January 31, 2027 Corps 3 R-11 U-3, U-5, U-11 98 January 31, 2032 UT to Abbotts Total Corps 557 (LF) 40 Road Crossings Sewer UT to Abbotts Intermittent Corps Type of Type of Average Stream Width Embedded Riprap Temporary Impact Allowance for Culvert Impact Impact Number Impact Stream Name Flow Regime Jurisdiction (ft) (LF) Pumparound (LF) (LF) R-6 A UT to Abbotts Creek Intermittent Corps 3 50 60 87 R-7a/b A UT to Abbotts Creek Intermittent Corps 3 50 60 90 R-8a/b B UT to Abbotts Creek Perennial Corps Corps 6 50 3 50 60 60 112 85 R-9 A UT to Abbotts Creek Intermittent R-10 A UT to Abbotts Creek Intermittent Corps 3 50 60 85 R-11 A UT to Abbotts Creek Intermittent Corps 1 3 50 60 1 98 500 (LF) 557 (LF) Utility Crossings Impact Number Type of Impact Stream Name Flow Regime Type of Jurisdiction Average Stream Width (ft) Temporary Impact (LF) U-1 Sewer UT to Abbotts Perennial Corps 6 40 U-2 Sewer UT to Abbotts Perennial Corps 6 40 U-3 Sewer UT to Abbotts Intermittent Corps 3 40 U-5 Sewer Abbotts Creek Perennial Corps 20 60 U-6 Sewer UT to Abbotts Intermittent Corps 3 40 U-7 Sewer UT to Abbotts Perennial Corps 6 40 U-8 Sewer UT to Abbotts Perennial Corps 6 40 U-9 Sewer UT to Abbotts Intermittent Corps 3 40 U-10 Sewer UT to Abbotts Perennial Corps 6 40 U-12 Sewer UT to Abbotts Perennial Corps 6 40 U-13 Sewer UT to Abbotts Intermittent Corps 3 40 U-14 Sewer UT to Abbotts Perennial Corps 6 40 500 (LF) SOA \ \ \ \\\ \ \\\ \ \ \ \ PROP. ROAD 70,GT \ \ \ \\\ \ \\\ \ \ CROSSING TO IMPACT TRIBUTARY OF ABBOTTS CREEK \ \ \ \ \ \ RIPRAP \ \ \ \\ \ \ \ \ \ RCP PIPE PAD \ \ \\\ \\\ \ 80' LENGTH + \ \ \ \ \ \ \ HEADWALL* a \ \ \\\\ \ \ \\ \ RIPRAP \ \ \ \ \\\ \ \ \ \ PAD F�-01\N *HEADWALL VARIABLE DEPENDS ON SLOPE AND SKEW, MINIMUM LENGTH NECESSARY TO ACHIEVE 80' IMPACT FROM HEADWALL TO HEADWALL 20 0 10 20 40 \ \ \ \\\\\ \\ \ TOP \ \\ \\\\\ %`POF \ \\\\\ \\ \ BANK TYPE "A" IMPACT INSTALLATION DETAIL WE TLA ND BUFFER EXHI B I T FORSYTH COUNTY NORTH CAROLINA DATE: 11-14-18 Bening Ed neer M I m 80 CONSULTING ENGINEERS & LAND SURVEYORS 8518 Triad Drive Colfax, NC 27235 Phone (336) 852-9797 License No. C-0950 www.FleniingEngineering.com TYPICAL ROAD CROSSING TYPE "A" 80' HEADWALL TO HEADWALL SCALE: 1" = 40' 0+00 0+50 1+00 AD BELOW 'RADE TYPICAL ROAD PAVING WITH SUBGRADE h' w EX. STREAM GRADE RCP � 0 0 0 0 RIP RAP F BURIED 1' STREAM( 0+00 0+50 1+00 AD BELOW 'RADE RIPRAP PAD PROPOSED ROAD CROSSING _ __------- / TO IMPACT TRIBUTARY OF / / ABBOTTS CREEK RCP PIPE 90' LENGTH + HEADWALL* RIPRAP PAD TYPE "B" IMPACT INSTALLATION DETAIL TOP OF BANK WETLAND BUFFER EXHIBIT FORSYTH COUNTY NORTH CAROLINA DATE: 11-14-18 i FmR liffn T Rg mai M I m_ / *HEADWALL VARIABLE DEPENDS ON SLOPE 30 0 15 30 60 120 AND SKEW, MINIMUM LENGTH NECESSARY TO ACHIEVE 80' IMPACT FROM HEADWALL TO HEADWALL CONSULTING ENGINEERS & LAND SURVEYORS 8518 Triad Drive Colfax, NC 27235 Phone (336) 852-9797 License No. C-0950 www.FlemingEngineering.com 05 SCALE: 1" = 30' 1 DRAWN BY: LSN EX. TYPICAL ROAD CROSSING TYPE "B" 90' HEADWALL TO HEADWALL SCALE: 1" = 40' 0+00 0+50 1+00 AP PAD =D 1' BELOW AM GRADE on. 0 Z.oa o TYPICAL ROAD PAVING WITH SUBGRADE N HEADWALL HEIGHTS VARY CV _ CULVERT DIMS VARIES STREAM GRADE RIP R BURII STRE I 0+00 0+50 1+00 AP PAD =D 1' BELOW AM GRADE 30 ss ss ss ss SS SS 15 30 60 120 1 1 1 1 N 1 1 1 1 1 N 1 1 1 1 1 N 1 1 1 1 NI 1 1 1 1 UTILITY CROSSING TO IMPACT TRIBUTARY OF ABBOTTS CREEK TOP OF BANK TYPICAL UTILITY INSTALLATION DETAIL WE TLA ND BUFFER EXHI B I T FORSYTH COUNTY NORTH CAROLINA DATE: 11-14-18 Rffyi T Ed mai M I m CONSULTING ENGINEERS & LAND SURVEYORS 8518 Triad Drive Colfax, NC 27235 Phone (336) 852-9797 License No. C-0950 www.FleniingEngineering.com TYPICAL UTILITY CROSSING SCALE: 1 " = 30' CONTRACTOR TO RESTORE STREAM TO ORIGINAL CONDITION EX. GRADE � I I MIN. 1' COVER ANTI SEEP AS REQUIRED DIP COLLAR 0+00 0+50 1+00 1+50 TEMPORARY ROCK/SANDBAG DAM DETAIL N-T.S- T E M P O R A R Y S E E D 1 N G S SEEDING MDMRE SEEDING RATE Rn GMin ono 120 16e. iCaga Lefpedam 50 Iha. Gannon MINI 40-50 Ibe- [m(oy u6 t&. coalah 1 12f1 16e. From Oct. 1 -Nov. w15 P E R M A N E N T S E E D I N G S PLANTS h MIXTURE PlANTNG RATE:/ACRE Toll Fescue IOD -150 lb.. (Law Maintenance] PLANTING DATES Toll Fescue 20D-250 16e. Wa[erwaya nd Jo I - May I Lown. [High MoinU] May 1 - Aug. 15 Blend of two Lurf- 200-250 Ibe. type j oR Fescue. r CRax and two o H HOGIIRE (OPTIONAL) mprawed Kentucky L1kI -m- G.n(high PIAJfONG DATES S"L I- April 15 (high a tenants) Tall Feseue 100 Ibe- S. INSTALL STREAM BANK STABILIZATION AS EACH WATER COURSE IS CROSSED TO STABILIZE THE STREAM BANK. and Kd obe or Korean to lb.- Leepedem Sept. I- ApHI 15 TOIL Fescue and SD lbs. Seri Leepede3a 16 Ibe./caro Toll Fescue No 60 lbs. German MBet or and Svaangrcn 30 lbs. Toll FeI 70"N'. and and Ryeglain 25 to. Common Ill wr ogm,a 25 lb. Sept. I- April 15 Sept. I- April 15 April 15 - Jum 30 1/ For spring eeedfng., use SamiRed Laeped.m seed. F lav Noll no winter eeedinge, use unsGariFed _.d- 2/ Annuds such as MilieS, Sudangras, and Ryegrain moat be kept at 10-12' maximum height. PREPARATION Prepare seedbed by nppinq, chiseling, h -wing or plowing to deplh of s: inches as to praduc. o loose, froble aurr. Remove al! -Wnse, bauldera, stump. or debna from the aurtoc. whfoh would prohibit gerrniaolion or Plant growth. Inowporale into the aoll HOD to 1,000 pound, of IC-�10-10 ferDlixer Vua 506 pounds of twenty percent [20R] euporphoaphaLa per acre and two toe of dolomItw lime per acre unless soil Leat. indicate Ih.t o tower rate M time be used. Mulch oder seeding with 2.0 tons o1 grain Arow Per acm and either crimp straw into -0 orLack with liquid asphvlt at 400 gdloa per acre or emulsified asphalt at 300 gall._ per acre. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE N. T. S. Construction 1. Cleor the entrance arca or cqvegetation, roott, and other objoctionoblo dfwfions Speamoteand rial aproperly grade it. L Place the gruvel to the apec8lc grade and dimenaimre shown an the plana and smooth it. 3. Provide drainage to carry water to o sediment trap or other suitable outlet. 4. Use gootextife fabric, because they improve rtability of Uw f -lotion in locations. subject to seepage 0, high water table. Maintenonce Maintain the ;rowel pod in o condkiom W Prevent mud or sediment }ram IooY q the construction site. Thin may require perlodic toping dret with 2 -tech atone. After each rainfall, Inspect any atrucWre used to torp sediment Gnd clean it out os. necessary. ImOediahiy remove rall objectiocble materials spilled, washed, or troaked onto pubRa rood*ays. WIl7 A STREAM BEDAggligim _TJ IMPORARY RIP -RAP _ OUT= PROTECTION SURFACE NATER`: DIVERSION 1. SLATE APPROACHES TO CROSSING AT 2'1 OR FLATTEN. AT EH. A 2. SPILLWAY R AS S O BANK TO BAHT WIDTH OF STREAM. OR AS SHOWN ET PIANS, MIN, 3. PIPE T(} EXTEND COMPLETELY ACROSS 10' PERMANENT RICHT OF WAY AND 1' BEYOND LINITIS OF RIP RAP. 4. CROSSING TO BE REMOVED UPON COMPLETION PLAN `�r�rll OF CONSTRUCDON. PLAN VIER COYER PLASTIC RPE WfM MINIMUM 12' /57 WASHED STONE PRIDR TO PLACING LARGE DVWETER RIP -RAP. s. `'4,Z(b SUDIVERSION TER 8' OF CLASS -A' THP -RAP SURFACE WATER Ly ON SURFACE OF CROSSING DIVERSION TOP OF BANK BEYOND -� CUSS 'B' RIP -RAP FILTER FABRIC UNDER RIP -RAP AND PIPE 18' HOPE - 12' TO CARRY BASE FLOW SECTION A -A TEMPORARY CREEK CROSSING PUMP AROUND DETAIL (NTS) BID DO6TIN6 /;7 A 6EaYHeDUIE 4 11/2 t 1 fl IsANaartrs AREA PLAN NEW SECTION A -A I. JL4 THE WORK SHALL CONSIST OF INSTALLNG A PUMP AROUND WHEN CONSTRUCTION ACTWES TAKE PLACE WTTHW THE STREAM CHANNEL II. MAITRML SPECIEICAriONS SANi1BAG5: SANDBAGS INAL CONSIST IdATER1Al.S WHICH ARE RESISTANT TO ULIIUY10LE7 RADIATION. TEARING NO PUNCTURE, AND WOVEN TIGHTLY ENOUGH TO PREVENT LEAKAGE OF FILL MATERIAL [.a. SKID. EINE GRAVEL. ETC.} Ill. CONSTRUCTION REOUTAEMENTS 1. ALL ER !4 AND SEDIMENT CONTROL OVACES SHALL BE INSTALLED AS THE FIRST ORDER OF WORK, 2. THE HEIGHT OF THE SANOBAGS SHALL BE AS INDICATED IN SWr ON A -A THE SANDBAGS SHALL BE PLACED ON A SMOOTH PREPARED SURFACE. 3- ALL EXCAVATED MATERIALS SMALL BE DISPOSED OF OUTSIDE THE IOD YEAR ROOD PLAIN UNLESS APPROVED ON THE PLANS, 4. ALL DEWATERING OF THE CONSTRUCTION AREA SHALL BE PUMPED TO A DEWATERING PUMP DISCHARGE FILTER BAG OR SILT BASIN- S. THE PUMP SHALL BE OF SUFFICIENT SEE TO CONVEY NORMAL STREAK FLOW. 8. SEDIMENT CONTROL DEVICES ARE TO REMAIN IN PLACE UNTIL ALL DISNR13EO AREAS ARE STABILIZED AND THE CITY ENGINEERING DEPT APPROVES THEIR REMOVAL NOTES CONSTRUCTION SEQUENCE PHASE t !PRE-CONSTRUCTIONl• 1. SET UP A PRE-CONSTRUCTpN MEETING ON SITE WITH NGDENR INSPECTOR. PLANTING DATES 2. INSTALL CONSTRUCTION ENTRANCE. AND OTHER EROSION CONTROL MEASURES AS REQUIRED TO BECIN FENCE MAY NOT EXCEED 1/4 ACRE PER 100' IXGAVATION OPERATIONS. INSTALL ANY ADDITIONAL MEASURES AS DIREC-= BY INSPECTOR AT Jo I - May I PRE -CONSTRUCTION MEEfiNG. May 1 - Aug. 15 3. INFORM INSPECTOR OF INSTALLATION OF NECESSARY EROSION CONTROL DEVICES AND SET UP AN Aug. 15 - Dec. 30 INSPECTION FOR COMPLIANCE WITH STANDARDS. H HOGIIRE (OPTIONAL) PHASE 2 (CLEARING OPERATIOHlS7: 4. BEGIN CLEARING AND GRUBBING THE SITE AS REWIRED. 5. DILIGENTLY MAINTAIN EROSION CONTROL DEVICES DURING CLEARING AND GRABBING OPERATIONS. PIAJfONG DATES S"L I- April 15 PHASE 3 [SYIRARY SEWER II�TAI_I. ATION7: 5. BEGIN CONSTRUCTION OE SMr AFY SEWER. 7. AFTER INSTALLATION OF SANITARY SEWER, RETURN GF DE TO PRE-1EXCAVATION ELEVATION. Sept I- April 15 S. INSTALL STREAM BANK STABILIZATION AS EACH WATER COURSE IS CROSSED TO STABILIZE THE STREAM BANK. OF FENCE, DRAINAGE AREAS MAY BE INCREASED WITH A STORAGE PIT IN FRCUT OF SI. OIUGEIRLY MAINTAIN EROSION CONTROL DEVICES WRING SWTARY SEWER INSTALLATION. FABRIC W/W1RE BACKING 10. STABIUZE ALL DISTURBED AREAS UPON COMPLETION OF INSTALLATION. Sept. I- ApHI 15 a] MAXIMUM PLACEMENT OF POST USING HOG PILLSE � lPAdIFGT COUPLET10N1- 11, CONTACT INSPECTOR FOR INSPECTION OF COMPLETED CONSTRUCTION - 12. UPON INSPECTION AND APPROVAL, REMOVE ONLY THOSE EROSION CONTROL DEWaCES AS INSTRUCTED BY THE INSPECTOR - Way I - S"L 1 13. STABILIZE ANY REUNNING AREAS AS INSTRUCTED BY THE INSPECTOR. 14. REQUEST FINAL INSPECTION FROM INSPECTOR. Sept t- April 15 15. UPON APPROVAL REMOVE ALL REMAINING EROSION CONTROL DEVICES, SEEDING AS NECESSARY UPON THIS REMOVAL Sept. I- April 15 Sept. I- April 15 April 15 - Jum 30 1/ For spring eeedfng., use SamiRed Laeped.m seed. F lav Noll no winter eeedinge, use unsGariFed _.d- 2/ Annuds such as MilieS, Sudangras, and Ryegrain moat be kept at 10-12' maximum height. PREPARATION Prepare seedbed by nppinq, chiseling, h -wing or plowing to deplh of s: inches as to praduc. o loose, froble aurr. Remove al! -Wnse, bauldera, stump. or debna from the aurtoc. whfoh would prohibit gerrniaolion or Plant growth. Inowporale into the aoll HOD to 1,000 pound, of IC-�10-10 ferDlixer Vua 506 pounds of twenty percent [20R] euporphoaphaLa per acre and two toe of dolomItw lime per acre unless soil Leat. indicate Ih.t o tower rate M time be used. Mulch oder seeding with 2.0 tons o1 grain Arow Per acm and either crimp straw into -0 orLack with liquid asphvlt at 400 gdloa per acre or emulsified asphalt at 300 gall._ per acre. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE N. T. S. Construction 1. Cleor the entrance arca or cqvegetation, roott, and other objoctionoblo dfwfions Speamoteand rial aproperly grade it. L Place the gruvel to the apec8lc grade and dimenaimre shown an the plana and smooth it. 3. Provide drainage to carry water to o sediment trap or other suitable outlet. 4. Use gootextife fabric, because they improve rtability of Uw f -lotion in locations. subject to seepage 0, high water table. Maintenonce Maintain the ;rowel pod in o condkiom W Prevent mud or sediment }ram IooY q the construction site. Thin may require perlodic toping dret with 2 -tech atone. After each rainfall, Inspect any atrucWre used to torp sediment Gnd clean it out os. necessary. ImOediahiy remove rall objectiocble materials spilled, washed, or troaked onto pubRa rood*ays. WIl7 A STREAM BEDAggligim _TJ IMPORARY RIP -RAP _ OUT= PROTECTION SURFACE NATER`: DIVERSION 1. SLATE APPROACHES TO CROSSING AT 2'1 OR FLATTEN. AT EH. A 2. SPILLWAY R AS S O BANK TO BAHT WIDTH OF STREAM. OR AS SHOWN ET PIANS, MIN, 3. PIPE T(} EXTEND COMPLETELY ACROSS 10' PERMANENT RICHT OF WAY AND 1' BEYOND LINITIS OF RIP RAP. 4. CROSSING TO BE REMOVED UPON COMPLETION PLAN `�r�rll OF CONSTRUCDON. PLAN VIER COYER PLASTIC RPE WfM MINIMUM 12' /57 WASHED STONE PRIDR TO PLACING LARGE DVWETER RIP -RAP. s. `'4,Z(b SUDIVERSION TER 8' OF CLASS -A' THP -RAP SURFACE WATER Ly ON SURFACE OF CROSSING DIVERSION TOP OF BANK BEYOND -� CUSS 'B' RIP -RAP FILTER FABRIC UNDER RIP -RAP AND PIPE 18' HOPE - 12' TO CARRY BASE FLOW SECTION A -A TEMPORARY CREEK CROSSING PUMP AROUND DETAIL (NTS) BID DO6TIN6 /;7 A 6EaYHeDUIE 4 11/2 t 1 fl IsANaartrs AREA PLAN NEW SECTION A -A I. JL4 THE WORK SHALL CONSIST OF INSTALLNG A PUMP AROUND WHEN CONSTRUCTION ACTWES TAKE PLACE WTTHW THE STREAM CHANNEL II. MAITRML SPECIEICAriONS SANi1BAG5: SANDBAGS INAL CONSIST IdATER1Al.S WHICH ARE RESISTANT TO ULIIUY10LE7 RADIATION. TEARING NO PUNCTURE, AND WOVEN TIGHTLY ENOUGH TO PREVENT LEAKAGE OF FILL MATERIAL [.a. SKID. EINE GRAVEL. ETC.} Ill. CONSTRUCTION REOUTAEMENTS 1. ALL ER !4 AND SEDIMENT CONTROL OVACES SHALL BE INSTALLED AS THE FIRST ORDER OF WORK, 2. THE HEIGHT OF THE SANOBAGS SHALL BE AS INDICATED IN SWr ON A -A THE SANDBAGS SHALL BE PLACED ON A SMOOTH PREPARED SURFACE. 3- ALL EXCAVATED MATERIALS SMALL BE DISPOSED OF OUTSIDE THE IOD YEAR ROOD PLAIN UNLESS APPROVED ON THE PLANS, 4. ALL DEWATERING OF THE CONSTRUCTION AREA SHALL BE PUMPED TO A DEWATERING PUMP DISCHARGE FILTER BAG OR SILT BASIN- S. THE PUMP SHALL BE OF SUFFICIENT SEE TO CONVEY NORMAL STREAK FLOW. 8. SEDIMENT CONTROL DEVICES ARE TO REMAIN IN PLACE UNTIL ALL DISNR13EO AREAS ARE STABILIZED AND THE CITY ENGINEERING DEPT APPROVES THEIR REMOVAL NOTES 1.) TOTAL DRAINAGE AREA FLOWING TO SILT METAL FENCE POST FENCE MAY NOT EXCEED 1/4 ACRE PER 100' DIF FENCE- DRAINAGE AREAS MAY BE GAUGE M NCREASED WITH A STORAGE PIT IN FROMT OF H HOGIIRE (OPTIONAL) FENCE AND/OR STONE OUTLETS. 2.] TOTAL DRAINAGE AREA FLOWING TO SILT FENCE MAY NOT EXCEED 1/4 ACRE PER 1DO' y PROPEX OF FENCE, DRAINAGE AREAS MAY BE INCREASED WITH A STORAGE PIT IN FRCUT OF ? FABRIC W/W1RE BACKING FENCE AND/DRSTONE WTLETS o a] MAXIMUM PLACEMENT OF POST USING HOG WARE WITH APPROVED EROSION CONTROL WASHED STONE FABRICS TO BE 81 A.] MA)gMUM PLACEMENT OF POST WITHOUT HbG W11RE WITH APPROVED EROSION CONTROL FABRICS TO BE 6'-O', 5.] SKIRT ANDWIFRIE OF FABRIC SHGULO BE TRENCHED 0' INT] GROUND AND BACKFILLED I/ STONE TO 6' ABOVE GROUND g' 8.] USE COG STD /432 STONE DITCH CHECK 5 FOR FENCE CUTLETS AT A MAXIMUM 100 FT SPACING ANO AT ALL HATUAL DRAINAGE AREAS POST. METAL T -POST 5'-0' OR 5'_O^ IN HEICHT DEPENDING ON flLL SLOPE (MIH. 1.33 LB/LF STEEL CONSTRUCTION) FABRIC: 3'-0' IN WIDTH (MUST MEET STANDARD SPECIFICATIONS FOR SILT FENCE - ASTM D 8481) STONE: 14 WASHED STONE TO BE PLACED 1'-O' DEEP AT SILT FENCE SILT FENCE DETAIL w.T.S CALEBS CREEK STREAM IMPACTAREAS DETAIL SHEET FORSYTH COUNTY NORTH CAROLINA DATE: FFI Fleming Engineering, Inc.. F CONSULTING ENGINEERS & LAND SURVEYORS 8518 Triad Drive Colfax, NC 27235 Phone (336) 852-9797 License No. C-0950 www.FleniingEngineering.com