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Home My WebLink About20180006 Ver 1_170131_Permit_Package 12 19 2017_20180102� ��3 �,�ti.�',�. North Carolina Department of Transportation � 5�()C111�'►'dtPfi " y� ,, .. . Highway Stormwater Program �y- STORMWATER MANAGEMENT PLAN �`� '-':-��' (Version 1.2; Released July 2012) FOR LINEAR ROADWAY PROJECTS Project/TIP No.: 17BP.12.R.31 Count ies : Catawba Pa e 1 of 2 General Project Information Project No.: 17BP.12.R.31 Pro'ect T pe: Brid e Replacement Date: 12/19/2017 NCDOT Contact: Steve Rackley Contractor / Designer: Joshua Massrock, P.E. Address: 1710 E. Marion St. Address: 555 Fayetteville Street, Suite 900 Shelby, NC 28151 Raleigh, NC 27601 Phone:980-552-4216 Phone:919-232-6631 Email: srackle ncdot. ov Email: oshua.massrock hdrinc.com CitylTown: Count (ies : Catawba River Basin s: Catawba CAMA Count ? No Primary Receiving Water: Allen Creek NCDWQ Stream Index No.: 11-129-5-7-2-4- 3) NCDWQ Surface Water Classification for Primary Receiving Water Prima : Class C Supplemental: None Other Stream Classification: None 303(d) Impairments: None Buffer Rules in Effect N/A Project Description Project Length (lin. Miles or feet): 0.06 Surrounding Land Use: Rural Proposed Project Existing Site Project Built-Upon Area ac. 0.23 ac. 0.16 ac. Typical Cross Section Description: Two-lane 22' asphalt roadway with 4' paved shoulders and 2' turf shoulders Two-lane 20' asphalt paved roadway with 3' turf shoulders. Average Daily Traffic (veh/hr/day): Design/Future: 4650 Existing: 4300 General Project Narrative: The existing bridge on Highway SR1810 over Allen Creek in Catawba County is proposed to be replaced with a 82 foot two span 21" cored slab bridge. The existing approch sections of the roadway will be widened from approximately 20ft. To 22ft. The bridge crossing will be widened from 24 ft. to 33 ft. (out to out). The new bridge will have no deck drains on the bridge. Stormwater runoff will be directed to a 2' ditch lined with rip rap prior to discharging into the stream. 1.) Maximizing shoulder section — A grass shoulder section is utilized on the project to promote diffused passive stormwater treatment. 2.) Minimizing roadway side slopes — Gentle and flat roadside slopes have been utilized to the maximum extent possible in locations while minimizing costs and ensuring safety for embankment heights. 3.) Assessing and minimizing the impacts of stormwater runoff to environmentally sensitive areas — The stream and tributary within the project limits are bridged and piped in the current condition. The project results in no new significant impacts to either the stream or tributary. There are no wetlands within the project corridor. 4.) Promoting sensitive intersection of streams - The existing alignment of the stream crossing will be maintained to minimize the bridge length and avoid significant costs and right of way impacts. 1.) Providing adequate ground cover — Appropriate seed mixtures have been specified for all seasons of planting. Erosion control matting will be utilized to minimize erosion while vegetation is established. 2.) Stabilizing slopes — Erosion control matting will be utilized on 2:1 slopes. 3.) Providing adequate energy dissipation — Storm water will dissipate across 2:1 slopes and across natural ground on three sides of the bridge. On the north corner, storm water will be directed into a vegatated ditch that is lined with rip rap below the high water elevation . 4.) Preserving natural features — Existing drainage patterns are maintained. 5.) Maximizing vegetative conveyance — Vegetated ditches are proposed where applicable to promote sedimentation, filtration, and infiltration. 6.) Encouraging diffuse flow — Riprap energy dissipators are utilized to diffuse flow at pipe outlets. No deck drains were required on the bridge. References l'lii;}l'+t`�l`�' North Carolina Department of Transportation � �lcp��1i4V�t^P1' Highway Stormwater Program ��;� STORMWATER MANAGEMENT PLAN `'-�-=:��''� (Version 1.2; Released July 2072) FOR LINEAR ROADWAY PROJECTS Project/TIP No.: 17BP.12.R.31 Count ies : Catawba Pa e 2 of 2 Project Environmental Summary Surtace Water Impacts Sheet Station Feature Water / Wetland I Receiving Surface NRTR Map NCDWQ Stream NCDWQ Surface 303(d) Type of Existing Proposed No. From / To Impacted Buffer T pe Water Name ID Index Water Classification Impairments Impact SCM SCM 4 14+71 -L- Stream Perennial Allen Creek 11-129-5-7-2-4-(3) C None Stabilization N/A N/A 14+g5 -L- ' List all stream and surface water impact locations regardless of jurisdiction or size. Equalizer Pipes to be noted as a minimization of impacts. All proposed SCMs listed must also be listed under Swales, Preformed Sour Holes and other Energy Dissipators, or Other Stormwater Control Measures. Description of Minimization of Impacts or Mitigation References WETLAND PERMIT IMPACT SUMMARY WETLANDIMPACTS SURFACE WATERIMPACTS 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) 14+71 / 14+g5 -L- Bank Stabilization (under bridge) <0.01 31 14+74 / 14+g0 -L- Temp. Causeway <0.01 39 14+g5 -L- LT Bank Stabilization (Ditch Tie In) <0.01 8 TOTALS: 0.00 0.00 0.00 0.00 0.00 0.01 0.01 39 39 0 aa�isaa va�ros DETAIL OF CAUSEWAY VOLUME OF CLASS II RIP RAP BELOW NWS = 25 CY AREA OF Existing CLASS II RIP RAP = 0.07 AC � gridge s.o� NWS 1.� . � � Geotextile � ' �' � Liner i 1' � 5.0' I. —Rock �� /� ; � � _�-� -��-. Embankment ' � '/ � ��-_. � FioW �� j�� r / / � Stream �� " �� Bed � ��i �� /� � (/ �'� �✓ /� ; // ,; ( Not to Scale) ,� � � NOTE: DO NOT BLOCK MORE THAN HALF F~ OF THE STREAM AT ANY GIVEN TIME. I�� r � . ,�� `� li�y�; �///_; \,, �� , m �� .� { ��\ �� _u � \ � , �, �-- PUE -� �� `� i�� T� I� I I. �'E �� x�; . � ' ,� - � �� , i _ �� 'o ' � . � C X. _ �- -= - - -\�v TRENCHLESS INSTALLATION OF WATER LINE TEMPORARY IMPACTS DUE TO CAUSEWAY P u+nn P ox� c�as'�` ii � RIP RAP �� l� �-- —r— — ,� v� o - W \\ �— -- — — — = � PUE "��P\� � PUE �r PUE �' � ►L W EXISTING WOODEN ��-� � � PIERS TO BE CUT CLASS ' I' IP P ` P U Pvi i � � O N BA K LY j � c _ TUE H i�fJ �. � �i! — �' � _ � — , � _i _— � � 1N00DS ��- , __ �� / i� � � — , _F -- � i� � � T i ,�� +�/n�'7% � //f — — \ �� / � �. ' _ // � / � 1� � 1 i/�/ %//^' -.,i. .J i � � �� , �i ��, �� TO, .�/ � � hti -d 7,�!\ �%> G� : � //�� „ \ '' , i �n- WOOUS � �� /,, ��` � �` �' � °,, �' '� `., '� `-- � .. PUE *NO DECK DRAINS REQUIRED � �EST 2 T S �= —� i-- �� 30 SY EO XTILE � � \ SEE ETAIL 'B'_ � __ _��I['��=E—�— , �DENOTES TEMPORARY IMPACTS IN SURFACE WATER �DENOTES IMPACTS IN SURFACE WATER — 2' BASE LATERAL DITCH W/CLASS 'B' RIP RAP SEE DETAIL 'C � EST.10 TONS � 20 SY GEOTEXTILE I � 2' BASE LATERAL DITCH SEE DETAIL 'A' —CLASS 'B' RIP RAP EST. 3 TONS 10 SY GEOTEXTILE PROJECT REFERENCE NO. l7.BP.l2.R.3/ fLW SHEEf NO. ROADWAY DESIGN ENGINEER �P� -� PUE � �� - � � ", �]` •-. m o� � �i_ Q —�� — _ � i � -- - , �, � � N`-- =. �_�_ I ; _. �4�� / ��. � \ F � � PUE , , TB I W/ FL R CLASS II , p� RIP RAP �.--_�� ' � � ,—„ �� SHEET NO. HYDRAULICS ENGINEER �` _ - ;£6�� — - G� . � ��- � I -� �— -� � _ � � (��'�` � \ /� — ,', �' �� = I - �\, ` � � 1— ^�\'��4 (/� '�\�,',,T � � 1\�' ,, ,- : / �vE _ -� DETAIL B BANK STABILIZATION ( Not to Scale) �� z , GEOTEXTILE NORMAL WATER * DO NOT PLACE SURFACE ELEVATION RIP RAP BELOW NORMAL WATER SURFACE ELEVATION Type of Liner= Class 'll' Rip-Rap EST. 26 TONS. 30 SY GEOTEXTILE