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Home My WebLink About20170401 Ver 1_130262_PermitDrawings_20170403_20170405\ ��-��,�y North Carolina Department of Transportation *=��r� StarY�c�water ; ,,,�,,_, Highway Stormwater Program ��'R�� STORMWATER MANAGEMENT PLAN _r14:.ry��` (Version 2.07; Released October 2016) FOR NCDOT PROJECTS WBS Element: 17BP.11.R.135 TIP No.: SF-130262 County(ies): Caldwell Page 1 of 1 General Project Information WBS Element: 17BP.11.R.135 TIP Number: SF-130262 Project Type: Bridge Replacement Date: 4/3/2017 NCDOT Contact: Marc Shown, P.E. Contractor / Designer: TGS Engineers/Thomas Fletcher, P.E. Address: 1590 Mail Service Center Address: 804-C N. Layfayette St. Raleigh, NC 27699-1590 Shelby, NC 28150 Phone: (919) 707-6751 Phone: (704) 476-0003 Email: mshown(a�ncdot.gov Email: tfletcher@tgsengineers.com City/Town: Granite Falls County(ies): Caldwell River Basin(s): Catawba CAMA County? No Wetlands within Project Limits? No Project Description Project Length (lin. miles or feet): 1020 ft Surrounding Land Use: Residential Proposed Project Existing Site Project Built-Upon Area (ac.) 1.2 ac. 0.6 ac. Typical Cross Section Description: One 12' wide paved travel lane on the left side with 6' paved shoulders, 8' grassed Two 9.5' paved travel lanes with 4' wide paved shoulders and 4' grassed shoulders. shoulders, and 2(H):1(V) grassed side slopes. One 14' wide paved travel lane with 2'-6" concrete curb and gutter, a 6' wide concrete sidewalk, and 8' grassed shoulders and 2(H):1(V) grassed side slopes. Annual Avg Daily Traffic (veh/hr/day): Design/Future: 5300 Year: 2016 Existing: 5300 Year: 2013 General Project Narrative: Replacement of Bridge No. 130262 on SR 1107 (Falls Ave.) over Gunpowder Creek Lake in Caldwell County northeast of Granite Falls, NC. Proposed 400' long by 40' wide four-span bridge to (DesCription of Minimization of Water replace existing 400.5' long by 24.5' wide twleve-span bridge. The proposed grade will be approx. 1' to 2' above existing ground within the vicinity of the bridge and roughly matching existing Quality Impacts) ground by approx. 120' right of the lake and 185' left of the lake (looking downstream). The proposed project is an in-kind bridge replacement and does not involve any significant widening or increase in the traffic carrying capacity of SR 1107. Therefore, no increase in pollutant load generation is expected long term as a result of the project. NCDOT proposes to maintain the existing distributed discharge of stormwater runoff along the 400 feet length of the bridge deck to maintain safe passage by the traveling public. A distributed discharge across such a large area is expected to be protective of water quality standards for the following reasons: • Multiple smaller volume discharges across the width of Old Millpond optimizes the use of the reservoir's assimilative capacity by maximizing dilution of any pollutants. • Distributed discharges eliminates the potential for channel/bank erosion by avoiding a concentrated discharge of a larger volume of bridge deck runoff at a single location on land. • USGS Scientific Investigations Report 2011-5180 entitled "Characterization of Stormwater Runoff from Bridges in North Carolina and the Effects of Bridge Deck Runoff on Receiving Streams" confirms that pollutant concentrations from secondary roads are generally quite low and there is little evidence from the report to suggest that distributed discharges into a reservoir the size of Old Millpond would pose a risk to water quality standards. Stormwater runoff from the north approach of the proposed bridge is to flow to two proposed catch basins in the northeast quadrant and flows through a proposed 15" pipe until it will be diffused with a riprap pad at the proposed pipe outlet in the northwest quadrant. Stormwater from the southeast approach will flow into two proposed catch basins and through a 15" RCP and from the southwest quadrant into a proposed 18" pipe and a standard 'V' ditch yielding minimum velocities and diffused with riprap pads at the ditch and pipe outlet from which the existing drainage does not benefit. All proposed stormwater runoff is discharged as far away from the stream and at the lowest velocities as practicable. Waterbody Information Surface Water Body (1): Gunpowder Creek (Old Mill Pond) NCDWR Stream Index No.: 11-55-(1.5) NCDWR Surface Water Classification for Water Body Primary Classification: Water Supply IV (WS-IV) Supplemental Classification: None Other Stream Classification: None Impairments: None Aquatic T8�E Species? No Comments: NRTR Stream ID: N/A Buffer Rules in Effect: N/A Project Includes Bridge Spanning Water Body? Yes Deck Drains Discharge Over Buffer? N/A Dissipator Pads Provided in Buffer? N/A Deck Drains Discharge Over Water Body? Yes (If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the (If yes, provide justification in the General Project Narrative) General Project Narrative) See Sheet 9A For Index of Sheets � o� 0 V �i130262 Rdv tsh.den 3/28/2017 5:13:I8 PM TGS 0 + 0 -DR- STA. 10 + 19.11 ��1�� ll' �� Jl�� Y �� 1L�� V'V' � Il � CALD WELL CO U1�T Y LOCATI011I: BRIDGE N0.130262 OVER . GUNPOWDER CREEK LAKE 011t SR II07 (FALLS AVE) TYPE OF WORK: GRADI11lG, DRAl11tAGE, PAVING AND STRUCTURE WETLAND AND SURFACE WATER IMPACTS PERMIT 0 + � BEGIN CONSTRUCTION � TO US 321 � SR 1107 BEGI N BRI DGE -L- STA. 13 +20.00 � � � � � � � � —L— �5 END BRIDGE -L- STA. 17 + 2 0. 00 FALLS AVE PERMIT DRAWING SHEET 1 OF 6 0 + 0 �� —.— . N „ , N �\�� GUNPOWDER _ __ ��KEOTs� ` '� SITE 1 �� CREEK ,'� ___ ARNEs Rp) - � (OLD MILL N '� ,, - �5 _ -L- STA. 10 + 05.00 `�� POND� �� -L- STA. 20 + 25.00 �� BEGIN PROJECT �\� END PROJECT 176P.11.R.135 � �' �� 176P.11.R.135 � `� �� A PORTION OF THIS PROJECT IS WITHIN THE MUNICIPAL � BOUNDARIES OF THE TOWN OF GRANITE FALLS. �� CLEARING ON THIS PROJECT SHALL BE PERFORMED �\� TO THE LIMITS ESTABLISHED BY MODIFIED METHOD II. �� UNLESSALLSIGNATURESCOMPLETED NCDOT CONTACT: V I R G I1V I A M A B R Y HYDRAULICS ENGINEER 0r, owr,y c GRAPHIC SCALES DESIGN DATA PROJECT LENGTH P�aNs �xEPaa�o ar: rraNs rxEPaxEn FOK: �r4� +�� $� 2$ 0 $Q 100 ADT 2016 = 5�3�� TG$ ENGINEER$ NCDOT � � � 804—C N. LAFAYETTE ST PRIORITY PROJECTS UNIT T= 7 %* LENGTH ROADWAY PROJECT 17BP.11.R.135 #130262 =0.117 � iozo a��t, e�d e ��. A � SHELBY, NC 28750 '� LENGTH STRUCTURE PROJECT 17BP.11.R.135 #130262 =0.076 �� PH po4) 476-0003 Ralei h, t�C 17670 B' � PLANS V = SO MPH CORP. LICENSE NO.: C-0275 9 �yy o@� . o o TOTAL LENGTH PROJECT 17BP.11.R.135 #130262 =0.193 SIGNATURE: P� oF TRAMbQ 50 25 0 50 t00 TTST =3/0 +DUAL =4/0 � � JIMMY TERRY PE ROADWAY DESIGN RIGHT OF WAY DATE: � rxo�Ecr EucrN��x ENGINEER PROFILE (HORIZONTAL) FUNC CLASS = MAJOR FEBRUARY 21, 2017 COLLECTOR R.E. BURNS & soNs co to 5 0 l0 2o P. o. BOX "68 SANDRA MELVIN STATESV�LLE. NC 28687 pROJECT DESlGN ENG/NEER LETTING DATE: SUB REGIONAL TIER PH f704) 92<-86C6 P� PROFILE (VERTICAL) zmz srANnann srsc,F,cazroxs FEBRUARY 21, 2017 S7GNAT[IRE: .... .. .� nn n � on n o� n I� .... .. .� nn n � on n o� n I� 130262 Hvd prm pin30scale.d�n 4/3/2017 11:52:08 AM TGS 130262 Hvd prm pin30scale.d�n 4/3/2017 11:52:45 AM TGS WETLAND PERMIT IMPACT SUMMARY WETLAND IMPACTS SURFACE WATER IMPACTS Hand Existing Existing Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural Site Station Structure Fillln Fillln in Clearing in SW SW Impacts Impacts Stream No. (From/To) Size / Type Wetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Design (ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (ft) (ft) 1 13+24 TO 14+53, Streambank Stabilization/ 0.77 192 14+87 TO 17+38 Temporary Work Pad TOTALS*: 0.77 192 0 0 *Rounded totals are sum of actual impacts NOTES: All impacts are for Gunpowder Creek (Old Mill Pond) <0.01 acres of permanent SW impacts for interior bents at stations: 14+20, 15+20, 16+19 2013 10 24