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HomeMy WebLinkAbout20160299_Re R-2536 Onsite Mitigation Discussion_20150827 (2) Carpenter,Kristi From:Jeff Meador <jmeador@rkk.com> Sent:Friday, August 07, 2015 12:35 PM To:Capps, Karen B Cc:Baker, Virginia; Matthew Cook; Underwood, Chris; Paugh, Leilani Y; Rivenbark, Chris; Beauregard, Rachelle; Dilday, Jason L; Wanucha, Dave; andrew e williams2; Tina Swiezy; Shumsky, Michael J; jeisenhardt@rkk.com Subject:Re: R-2536 Onsite Mitigation Discussion Attachments:RK&K - Stream Mitigation.pdf As requested, attached is a pdf copy of the power point presentation that was shown at today's meeting. Thanks, Jeff ___________________________________ JEFF MEADOR, PE Project Manager RK&K 900 Ridgefield Drive, Suite 350 Raleigh, NC 27609 919.653.7346 D 919.878.9560 P | 919.606.2712 C | 919.790.8382 F www.rkk.com RESPONSIVE PEOPLE | CREATIVE SOLUTIONS From: "Jeff Meador" <jmeador@rkk.com> To: "Karen B Capps" <kbcapps@ncdot.gov> Cc: "Virginia Baker" <virginia.baker@ncdenr.gov>, "Matthew Cook" <mcook@rkk.com>, "Chris Underwood" <csunderwood@ncdot.gov>, "Leilani Y Paugh" <lpaugh@ncdot.gov>, "Chris Rivenbark" <crivenbark@ncdot.gov>, "Rachelle Beauregard" <rbeauregard@ncdot.gov>, "Jason L Dilday" <jldilday@ncdot.gov>, "Dave Wanucha" <dave.wanucha@ncdenr.gov>, "andrew e williams2" <andrew.e.williams2@usace.army.mil>, "Tina Swiezy" <tswiezy@rkk.com>, "Michael J Shumsky" <mshumsky@ncdot.gov>, jeisenhardt@rkk.com Sent: Friday, August 7, 2015 9:51:48 AM Subject: Re: R-2536 Onsite Mitigation Discussion All, We will be bringing some maps, exhibits, etc to the meeting today. If you will be attending the meeting remotely please use the following information to see our screen. Also, please use the call in number in my e- mail below. 1 Thanks, Jeff 1. Please join my meeting, Friday, August 07, 2015 at 10:30 AM Eastern Daylight Time. https://global.gotomeeting.com/join/148025085 2. Join the conference call: Dial +1 (646) 749-3122 Access Code: 148-025-085 Audio PIN: Shown after joining the meeting Meeting ID: 148-025-085 GoToMeeting® Online Meetings Made Easy® Not at your computer? Click the link to join this meeting from your iPhone®, iPad®, Android® or Windows Phone® device via the GoToMeeting app. ___________________________________ JEFF MEADOR, PE Project Manager RK&K 900 Ridgefield Drive, Suite 350 Raleigh, NC 27609 919.653.7346 D 919.878.9560 P | 919.606.2712 C | 919.790.8382 F www.rkk.com RESPONSIVE PEOPLE | CREATIVE SOLUTIONS From: "Karen B Capps" <kbcapps@ncdot.gov> To: "Chris Underwood" <csunderwood@ncdot.gov>, "Leilani Y Paugh" <lpaugh@ncdot.gov>, "Chris Rivenbark" <crivenbark@ncdot.gov>, "Rachelle Beauregard" <rbeauregard@ncdot.gov>, "Jason L Dilday" <jldilday@ncdot.gov>, "Dave Wanucha" <dave.wanucha@ncdenr.gov>, "andrew e williams2" <andrew.e.williams2@usace.army.mil>, "Tina Swiezy" <tswiezy@rkk.com>, jmeador@rkk.com, "Michael J Shumsky" <mshumsky@ncdot.gov>, jeisenhardt@rkk.com Cc: "Virginia Baker" <virginia.baker@ncdenr.gov>, "Matthew Cook" <mcook@rkk.com> Sent: Friday, August 7, 2015 8:44:27 AM Subject: R-2536 Onsite Mitigation Discussion All, 2 I have set up a conference call number for our meeting today. It is (919) 662-4555. Please let Michael Shumsky know if you will be calling in. Thank you, Karen Karen B. Capps, PE Design-Build Unit 1020 Birch Ridge Drive Raleigh, NC 27610 Phone: (919) 707-6618 Fax: (919) 212-5711 Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties. 3 r� -0 ° if ���.j10 �� _Jh 4 � , 1 !F �f � �� ��� " T '� � � i' � � k� I j � � � j h j� A � - f -'-* , � . P �� P ��� I . , t �, r� t � ' � �' , 1� �, � i � ; k � i•�T„ '� . � y. � '=a � � �y�. _"� �, yf. .�-� � ��--+e' �-� EJ+ h �g . E ��,�;P � �'� 'r�i�:-'d ��i��,+�'�.y i.T� '"�-�y�'? � F � " 'r, g '_ `��• r i�lFa� �c`w`�''�� �C .3 � �� � * �¢�' �'� * a ���� ��. -� � ' ., � � ,. �4 � 1 .�. I ,` � . � � .. ,� y'� t • � �. . 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'. ��{� �_ 1 . rp n� '� }� � '; :.'�Y�e L i� �'� ��M �, �::��+��+ �u .w f � , r _ — � ��; 6� �'�� �t " r r n a .�e � ^ � � � � � � Figure (aJ Rare patches of historic valley-bottom wetlands not covered by millpond sediment include tussock sedge meadows with low-energy streams, as shown here along Gunpowder Falls, MD, that contain species identical to palaeoseeds found in buried hydric soils beneath millpond sediment elsewhere in the Piedmont region. Microscope photos of seeds from pre-settlement hydric soil include (b) Eleocharis ovata (ovate spikerushJ, (cJ Carex crinita (fringed sedge) and (dJ Carex stricta (tussock sedge), all of which are obligate wetland species in rhis region. Grid markings are millimetre spacing. (eJ Organic-rich hydric palaeosoil. ���: ' �* � �F��, ,,��.' `�'� ''_�°.�i �I `1 � �,` .,'�'Y .�,� �`rt"�+ � _ _ ...�.��.w�.-`.� Figure credit: Franklin & Marshall College, Lancaster, PA. I ntervention A roaches pp Basic Restoration Approaches ---------- ------ _, ` - _ � - �L�:�� � ��� � ,.- , , .. �. _ � i ,JYIA4 ��.[SIAiIS'�W- � S- � ` l . � , ti1�' ..G' �F1L� P"aJ - � A.'K�LlCi l3L� — , �� � ' 3��''p �1 i ��� �;�. � � � - }'� :. � ,,.t... � .t,,� . ,,� t`H cK ' 4 ' ` �r s` _ .y - � - - _ ' ; ��� t� v�` �� r i,�; �� ��``*� t :: Removal of modern 1 sediment to re-connect floodplain (Rosgen Priority 2) Incised channel 2 stabilization to store modern sediment (Rosgen Priority 3) Raise streambed to store modern sediment and tie 3 into modern terrace (Rosgen Priority 1) 14 Key Features to Approach 1: ■ Connects floodplain root zone to �roundwater ■ Promotes retention of carbon, sediment and nutrient ■ Relies on vegetation and native materials for stability ■ Frequent floodplain connection ■ Increases flood storage ■ Moves evolutionary trend forward �� Saucon Creek: - Drainage Area = 30.4 sq. mi. - Design Discharge = 108 cfs - Regional Curve Bkf. 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Jf,n. � � . �j� � ., �. P F � . ��k a �S+ �' � _ .,.a P`T�, f. ,�' . � � '. — ' Y�f��� T � �4�' _� � _ �. —_ �;.. : -.�.-. � i Santo Domingo Creek: �- � � ��� ��`-:- , _ ��;,�, �. � r.. - Drainage Area = 3.3 sq. mi. ��r � :�' -,�, , �"��'-';� r+��C�;� � , - Design Discharge = 6 cfs . = Y'� ' �� _�� �_.. _ �;� - - Regional Curve Bkf. Discharge = 210 cfs <a �_: ,, t. . � ,+�i�: .,.. r� ,y� � � +�I . _ -��. -- �Y . t, � . � �-�P�,�i I ��', ` � � �.�:, ' . —' • �_ _ � � � �.._,�. •,,_ ' • __ s , _ F - .� . _ a R . . i.' °. - F� r d . �.. ' ,'s - � 1,. -� �.:� !, .� �� },�- ` �. �� �. ' a. h S X. � � � �Y '�1 - } � i . - �' �o��i �r i . �y �. � SY� �,v .'. J �� � �, �. � ,�'d`*, � y� Y , _ r.�.y +'�e'' � S i i��.'3 ` ,���. - ,'y�f ., , ��y.� . .. �'y �' i '� .S M1 . ' I `d'�r�� ^ r�.i �w���--`' ., � �* _ .. � �� g ��+�r� F � r .. aa .�. '� . ��i.: �`-��� _ �:��ri.sr t ���-- r . . � �.n,,�. . Y �t �, 9r 1� y'v _�. Ti � y➢ °' � m�� ���. _. _ = ,,..� � . � � . .., ��-:,� _ �� �. k .,� *.� . 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I _. � - . � � - � '�;a.��"y 'A�s� " i � , f .�� ._€ .r � '"'fr "K � r�'fk F�� ' � � �� L . . .�, � � � � � , . . .M . ![� . 7, . �v` -� P .; s4� :� 't �'�'�i}' � -'�d� � y � { s _._�� . , _ Or�_� t.�.� ?'�j � _ .. �r _ . � _ ,�" .±' .f'�a . `y- . f " . . 1 � . _ "e�41� .`�. ` �''�' .,r �� �. �,�'0,� � �;�. � i, - t1 * z. .�,� � . _" r • , Y �,�, , �` ; 3�',� * ' 7 �s e � `�' �^ ''' � � _F , , - �'E' ^ �� t ` � -�i.a- � r - ifl''�a � ,�,,�� $" t�,a, ?`t�i'Q S*� rar.v _ G �`? Si � ,r il� � k�t'- F f d� '�,� 4 -'�-- y _. � 4- ,��--�:���� .- ��� ���;a:"" , � ��'"a� 1� � :. �= �^�' _ � .. • ,� . • .. � , , , . .. -. F'°w. i�- . - , � � -.`��� ��j;'a�h_ Fu nctiona I U I ift p Basic/Simplified Approaches ---------- ------ _, ` - _ � - �L�:�� � ��� � ,.- , , .. �. _ � i ,JYIA4 ��.[SIAiIS'�W- � S- � ` l . � , ti1�' ..G' �F1L� P"aJ - � A.'K�LlCi l3L� — , �� � ' 3��''p �1 i ��� �;�. � � � - }'� :. � ,,.t... � .t,,� . ,,� t`H cK ' 4 ' ` �r s` _ .y - � - - _ ' ; ��� t� v�` �� r i,�; �� ��``*� t :: Removal of modern 1 sediment to re-connect floodplain (Rosgen Priority 2) Incised channel 2 stabilization to store modern sediment (Rosgen Priority 3) Raise streambed to store modern sediment and tie 3 into modern terrace (Rosgen Priority 1) 22 1. Increase flood storage. 2. Improve groundwater/aquifer recharge by removing cohesive soil layer typical found in modern floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. 3. Improve surface flow infiltration in floodplain area by removing cohesive soil layer typical found in modern floodplain (terrace) sediments. 4. Decrease channel erosion and downstream sedimentation. 5. Decrease nutrient erosion/loadings to downstream environments. 6. Removal of a sediment and nutrient load sources from floodways. 7. Effective wetland creation in floodplain by frequent runoff event connection. 8. Creation of a long-term geomorphologically stable stream environment. 9. Move stream forward in natural channel evolutionary sequence. 10. Does not attempt to reverse the natural channel evolutionary sequence by restoring the stream system in opposition to the pre-settlement condition. 11. Enhance nutrient uptake of groundwater using an attached vegetated root zone. 12. Enhance nutrient uptake of base flow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the vegetated zone. 16. Improve aquatic habitat by promoting retention of organic carbon inputs. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establish native vegetation. 20. Preserve existing riparian vegetation. �e Fu nction U I ift Potentia l p ��i��oc� �� Bia�iv�ersi� ar�d #�e lif� hisbries �f aquati c ar�d ri parian lii�e PHI�SIC�CHEMfC�.L �� ����-'��Jk,_ `"' " t ,�ti ' ' r � � <<,: �1 '�` � ''y - o . .. .' . .. . . . . ��r,��{�F��if�trr��e �.ir�r�1�� � ik�t�p��sr� �1 #��:u�t�t�si�r� . .. .�. � : � ;:..: ......�,. ..-i�-.a. .�.-,eHY»'t . ..s��. .v��T.�. .l��� ��...�.. ........ . ..rt�.. .w. ...�......T .:��.-.�..... ..�....... ....::...�.-.-....� �..........._-�. - Trar�pa rtaf�ra�7 inom �ie w�iersh�cl �4a �h� �harr�ef 1. Increase flood storage. 2. Improve groundwater/aquifer recharge by removing cohesive soil layer typical found in modern floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. 3. Improve surface flow infiltration in floodplain area by removing cohesive soil layer typical found in 5. 6. 7. 8. 9. 10. modern floodplain (terrace) sediments. �:W"iia��u�Yo. I�ecrease nutrient erosion/loadings to downs�tream environments. Removal of a sediment and nutrient load sources from floodways. Effective wetland creation in floodplain by frequent runoff event connection. Creation of a long-term geomorphologically stable stream environment. Move stream forward in natural channel evolutionary sequence. Does not attempt to reverse the natural channel evolutionary sequence by restoring the stream system in opposition to the pre-settlement condition. 11. Enhance nutrient uptake of groundwater using an attached vegetated root zone. 12. Enhance nutrient uptake of base flow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the vegetated zone. 16. Improve aquatic habitat by promoting retention of organic carbon inputs. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establi�� o���o^�� ����t�tQ�ao�. 20. Preserve existing riparian vegetatior�. 25 c. i�Vi�i��r� ��uu�Yo�vva����a�'u��Ci i��:iiai�C uy r-�uoYvU'iii� ��i�C��vC �iiii idyCr �y�ii�aV ��'�iiu if� i�iiiU�i�l floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. � I�r��-n�iP �s_ar�a�� f�na.�a ��fi�tr�t��n�n �� iF�nr�c�nl��r� �ar�� hei �-Pm��sir�� rn���iei� ���� �aei��- t�in�c'�al fnAa�r� in 4. Decrease channel erosion and downstream sedimentation. 5. Decrease nutrient erosion/loadings to downstream environments. 6. Removal of a sediment and nutrient load sources from floodways. 7. Effective wetland creation in floodplain by frequent runoff event connection. y. fV'Vove stream torwardl in natura� channeV evolutionary sequence. 10. Does not attempt to reverse the natural channel evolutionary sequence by restoring the stream system in opposition to the pre-settlement condition. 11. Enhance nutrient uptake of groundwater using an attached vegetated root zone. 12. Enhance nutrient uptake of base flow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the vegetated zone. 16. Improve aquatic habitat by promoting retention of organic carbon inputs. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establi�l� ���o�,�� �����t�ii��. 20. Preserve existing riparian vegetatior�, 26 c. i�Vi�i��r� ��uu�Yo�vva����a�'u��Ci i��:iiai�C uy r-�uoYvU'iii� ��i�C��vC �iiii idyCr �y�ii�aV ��'�iiu if� i�iiiU�i�l floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. 3. Improve surface flow infiltration in floodplain area by removing cohesive soil layer typical found in modern floodplain (terrace) sediments. 4. Decrease channel erosion and downstream sedimentation. 5. Decrease nutrient erosion/loadings to downstream environments. F. R��nnc�ei�� �n� a���l��P�t ,��� r�w�tr�Pnt Ir�a� �nAarrP� frn� flnc�r��n✓a�ic 8. Creation of a long-term geomorphologically stable stream environment. 9. Move stream forward in natural channel evolutionary sequence. 10. Does not attempt to reverse the natural channel evolutionary sequence by restoring the stream system in opposition to the pre-settlement condition. �r����.a��i� i u�� ��� ��. 1Z. tnhance nutrient uptake ot base f�ow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the vegetated zone. 16. Improve aquatic habitat by promoting retention of organic carbon inputs. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establi�� o���o^�� ����t�tQ�ao�. 20. Preserve existing riparian vegetatior�. 2� c. i�Vi�i��r� ��uu�Yo�vva����a�'u��Ci i��:iiai�C uy r-�uoYvU'iii� ��i�C��vC �iiii idyCr �y�ii�aV ��'�iiu if� i�iiiU�i�l floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. 3. Improve surface flow infiltration in floodplain area by removing cohesive soil layer typical found in modern floodplain (terrace) sediments. 4. Decrease channel erosion and downstream sedimentation. 5. Decrease nutrient erosion/loadings to downstream environments. 6. Removal of a sediment and nutrient load sources from floodways. 7. Effective wetland creation in floodplain by frequent runoff event connection. 8. Creation of a long-term geomorphologically stable stream environment. 9. Move stream forward in natural channel evolutionary sequence. 1f�, nc��� �nr�t �fitP�nnt tc� �-P���r�� 1��P na�t�>>�-al rh���nPl Pei�a���tinna�rv �Pni�Pnr,P k�ei r��tn.rinr? th� ct�'ea�n ��r�tPrr� 11. Enhance nutrient uptake of groundwater using an attached vegetated root zone. 12. Enhance nutrient uptake of base flow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the vegetated zone. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establi�l� ���o�,�� �����t�ii��. 20. Preserve existing riparian vegetatior�, : c. i�Vi�i��r� ��uu�Yo�vva����a�'u��Ci i��:iiai�C uy r-�uoYvU'iii� ��i�C��vC �iiii idyCr �y�ii�aV ��'�iiu if� i�iiiU�i�l floodplain (terrace) sediments and exposing the gravel/cobble layer in streambed. 3. Improve surface flow infiltration in floodplain area by removing cohesive soil layer typical found in modern floodplain (terrace) sediments. 4. Decrease channel erosion and downstream sedimentation. 5. Decrease nutrient erosion/loadings to downstream environments. 6. Removal of a sediment and nutrient load sources from floodways. 7. Effective wetland creation in floodplain by frequent runoff event connection. 8. Creation of a long-term geomorphologically stable stream environment. 9. Move stream forward in natural channel evolutionary sequence. 10. Does not attempt to reverse the natural channel evolutionary sequence by restoring the stream system in opposition to the pre-settlement condition. 11. Enhance nutrient uptake of groundwater using an attached vegetated root zone. 12. Enhance nutrient uptake of base flow using an attached vegetated root zone. 13. Enhance nutrient uptake storm flows using an attached vegetated root zone. 14. Enhance nutrient uptake by reattaching the floodplain existing wetland soil and high carbon source. 15. Promote nutrient uptake on floodplain surface by routine inundation of runoff generating events in the 16. Improve aquatic habitat by promoting retention of organic carbon inputs. 17. Improve aquatic habitat by retention of epifaunal substrate. 18. Improve aquatic habitat by reducing water temperature with groundwater input. 19. Invasive species removal and establish native vegetation. 20. Preserve existing riparian vegetation. ��; 1. Increased flood storage 2. Improved groundwater/aquifer recharge 3. Improved infiltration on floodplain surface 4. Decreased channel erosion and downstream sedimentation 5. Decreased nutrients to downstream environments 8. Reduced in-channel stresses — long-term geomorphic stability 9. Move stream forward in evolutionary sequence/trend 11. Enhanced nutrient uptake of groundwater via attached root zone 12. Enhanced nutrient uptake of base flow via attached root zone 13. Enhanced nutrient uptake storm flows via attached root zone 14. Reconnection to floodplain wetland soil and carbon source 15. Promote nutrient uptake on fldpin surface by routine inundation 16. Promote retention of organic carbon inputs 17. Promote retention of epifaunal substrate 18. Reduce water temperature with groundwater input 20. Preserve existing riparian vegetation X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Possible � Decrease X X Increase slope Reverse X X X X X Wetting Stress ✓ Connect restored floodplain root zone to groundwater, base flow and flood flow ✓ Promote retention of carbon, sediment and nutrients ✓ Rely heavily on vegetation and native materials for stability (not rock) ✓ Design for frequent floodplain connection (most all runoff producing events) ✓ Target increased flood storage �:� Base credit per foot of stream/floodplain length restored Floodplain root zone reconnection Retention of organic carbon (% aerial coverage) Retention of native/natural epifaunal substrate Increase floodplain storage (% volume 2-yr Storm, < 1 ft depth) Riparian wetland floodplain creation (wetland acres per 100 foot of restored stream/floodplain) Others TBD... 1/1 Groundwater >40% Native, Non- perched >50% >0.35 1/1 Base Flow 40-25 % Native, Perched 50-25 % 0.35-0.25 1/1 < 1-yr Storm 25-10% Supplemental Import 25-10% 0.25-0.15 1/1 > 1-yr Storm <10% Total Import <10% <0.15 . � ues �ons. #�, . � -� a � ����� . � } E� � ..-:rt4f . 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