20052134 Ver 2_Staff Comments_20120730

Lucas, Anne+te
From Lucas Annette
Sent Monday July 30 2012 1 56 PM
To Witherspoon Lauren
Subject 05 2134v2 Gates of Ethan s Glen Subdivision — take 2 REVISED
Attachments 05 21 '34v2 Gates of Ethan a Clen Subdivision — take 2 dorx
LC
The consultant called and as a result of that conversation I revised the hold bullets Here are the updated ones
Thanks
A
Annette M Lucas PE
Environmental Engineer
NCDENR I DWQ I Wetlands and Stormwater Branch
1650 Mail Service Center Raleigh NC 27699 1650 (Mail)
512 N Salisbury St Raleigh NC 27604 1 9th Floor (Location & Parcels)
Phone [phone] Fax [phone] Email Annette Lucas(cbncdenr gov
Website http / /portal ncdenr org /web /wq /swp/ws /401
A Before printing this email please consider your budget and the environment
E mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties

05 2134v2 Gates of Ethan s Glen Subdivision —take 2 REVISED
AML comments
July 30 2012
1 For all three level spreaders
a The required items checklists that were provided with the Supplement Forms did not
include the page /plan sheet numbers where the information may be found In the
future please complete these cells to allow DWQ to review your submittal more
efficiently
b Please provioe a construction sequence per the required items checklist
c Bypass channels must be trapezoidal
d Please ,how depLh. dir ne nsion, and elevat ors of the floc, spl tte, de>,ices or the plans
2 For Level Spreader 2
a The bypass channel (including proposed one foot contour lines) must be shown in plan
view
For Level Spreader 3
a The plans do not show all of the one foot contour lines downslope of the level spreader
This information was requested in the DWQ s previous letter for this project and failure
to provide the information in the next submittal will result in a return of application
b It appears that the slope between the base of the level lip and the top of streambank
exceeds the allowable slope of S% The next submittal must include a diffuse flow plan
as this discharge point that complies with Chapter 8 of the BMP Manual or the
application will be returned Please provide an updated LS VFS Supplement Form for
Level Spreader 3 if the design is modified
The bypass channel (including proposed one foot contour lines) must be clearly shown
in plan view

Lucas, Anne##e
From Lucas Annette
Sent Monday July 30 2012 1104 AM
To Witherspoon Lauren
Cc Lucas Annette
Subject 05 2134v2 Gates of Fthan s Glen Subdivision - takP 2
Attachments 05 2134v2 Gates of Ethan s Glen Subdivision - take 2 docx
Lauren
This consultant is having a difficult time with level spreader design I think this would be a good demo for the BMP
Reeil-%ae Cer* clas,
Annette
Annette M Lucas PE
Environmental Engineer
NCDENR I DWQ I Wetlands and Stormwater Branch
1650 Mail Service Center Raleigh NC 27699 1650 (Mail)
512 N Salisbury St Raleigh NC 27604 1 9th Floor (location & Parcels)
Phone [phone] Fax [phone] Email Ann(tte Luc i,,Lriedenr got
Website http / /portal ncdenrorg/web/wQ/swP/ws/401
A Before printing this email please consider your budget and the environment
E mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties

05 2134v2 Gates of Ethan s Glen Subdivision — take 2
AML comments
July 30 2012
1 For Level Spreader 3
a The plans do not show all of the one foot contour lines downslope of the level spreader
This information was included in the DWQ s previous letter for this project and failure to
provide the information in the next submittal will result in a return of application
b it appears that the slope between the base of the level lip and the top of streambank
exceeds the allowable slope of 5% Tne next submittal must include a aiffuse flow plan
as this discharge point that complies with Chapter 8 of the BMP Manual or the
appl cation u II be eturned Please prov de an updated LS JFS Supplement Form fog
Level Spreader 3 if the design is modified
2 For all three level spreaders
a Bypass channels must be trapezoidal
b The bypass channels (including proposed one foot contour lines) must be shown in plan
view
c Details of the flow splatter devices including dimensions elevations and supporting
calculations must be provided
d Please provide a construction sequence per the required items checklist
3 The required items checklists that were provided with the Supplement Forms did not include
the page /plan sheet numbers where the information may be found In the future please fill out
these cells to allow DWQ to review your submittal more efficiently