20150931 All Versions_Buffer Memo_20160803

Water Resources
ENVIRONMENTAL �UALITY
Memo
io:
File
From: Donna Hood
?�r4ug�� Am � Cha mar V�
y �
Date: July 29, 2016
Re: I-4750AA Buffer impacts
P_1"I :�1�'�:RORY
1)��NA1,1) R VAN DEK VAART
�,,-;._ �
S JAY LIMMF,KMAN
As p�rt��ns to the buffer i�npaats Cancerr�iHg ihe I-4T50AA proje�i:
3
Itin�ra�y� �ertairiing to the public rne�tiny h�id �n Cc�rnelius, NC or� May 9, 2G12 and May
10, 20'!2 stated NC DOT would use the existinG right of way t� b:.�ild the project
On or aboui Aprii 2014; an in p�rson meeting with DWR and DOT-NES, dis�ussed the
2007 DWR buffer guidance memo (see attached) At that time, it was deaded that the I-
5405 pro�ect fell within the existing use clause of the memo and there would be no buffer
impacts
I�formational Meet�ng for Resource Agencies on 7;7/2015-
a) Design team exp�esseci utiiization of avoidance and mmimization to avoid bufFer
impacts, descnbed as optimization of use of the existing transportation facility
and staying within those constrainis—therefore, no new impacts to the buffers
4 NCDOT and DWR conference cafl over buffer impacts and hazardous spili basin
Notes from brief conference call w�th DWR on VVednesdav, Auqust 5, 2015.
a) Wf�atever activity DOT is doing in the existing transportation facility is exempt
b) Bu�fer wou!d be drawn on the caussway, they v�ould stop prior to the exit�ng
transportation facility
c; Reiterate hardship� in the app!���ation, s:ach as di�ficu:tyf impracticability of treat:ng
stormwater off bridge/ need/ hazards of deck drains
d; .iu�:!fy �ift��ui#�es o* haz���!ous s�;�l basms
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5 There was no place to construct hazardous spill basins on any of the causeways without
abandoning avoidance and minimization precedent already set and employing egreaious
amo;ants of b�!fFer impact�.
Based on historical c�nversations, plans submitted that shovved no impacts oUtside of ihe
existing corridor on the causeways, the buffier rules did not ap�ly Hazardous spills basins
were not added because of the enormoUs buffer/surface water impacts required to construct
them