SW3220302_Response To Comments_20220613

Comment Response Letter for:
Denver Defense
Lincoln County NC
Prepared by:
Herman Foley
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HensonFoley
121 Gilead Road
Huntersville, NC 28078
704-875-1615 p
[e-mail]
June 101" 2022

Please correct the following issues based on the revised site information that was provided to me on
6/8/22:
- Application:
o Section IV, 8:
■ If using the project density calculation outlined in 15A NCAC 02H .1003(1)(a),
please revise this value to 62.0% (121,358 sf of BUA / 195,759 sf project area).
■ If using the project density calculation outlined in 15A NCAC 02H .1003(1)(b),
please revise this value to 48.8% (70,813 sf of new BUA / (195,759 sf project
area — 50,545 sf of Existing BUA)).
Response: Second option used on application so that existing BUA gives credit.
o Section IV, 10:
■ Drainage Area 1
• Total Drainage Area — Change this value from 119,602 sf to 119,449 sf.
• % Impervious Area — Change this value from 60.98% to 61.1% (61.1% _
72,99 sf / 119,449 sf).
■ Drainage Area 2 (SCM Bypass)
• On -site Parking — Change this value from 17,972 sf to 11,181 sf.
• Existing BUA — Change this value from 10,010 sf to 16,801 sf.
Response: All updated as requested.
- Supplement-EZ Form, Drainage Areas Page:
o Entire Site Column:
■ Line 8 — Change this value from 103,998 sf to 121,358 sf.
■ Line 10 — Change this value from 88,385 sf to 87,385 sf.
■ Line 12, Other — Change this value from 1,000 sf to 0 sf. NOTE: The BUA
associated with the masonry wall still needs to be accounted for in this form and
in the Application. If the masonry wall is not accounted for in one of the other
BUA types (parking, sidewalk, roof, roadway), the BUA values will need to be
altered (see below).
■ Line 18 —This value should correspond with Section IV, 8 of the Application.
o DA 1 Column:
■ Line 5 — Change this value from 119,602 sf to 119,449 sf.
■ Line 8 — Change this value from 103,998 sf to 72,929 sf (the amount of BUA
within the drainage area to the SCM).
Response: All updated as requested. Other BUA was removed because wall was already accounted for
and didn't need to twice.
Plan Sheets:
o CO3, Impervious Area Summary:
■ Proposed BUA — Change this value from 70,025 sf to 87,385 sf (includes future
BUA).
■ Total New Impervious — Change this value from 103,998 sf to 121,358 sf
(includes future BUA).
■ Impervious Net Change — Change this value from 53,453 sf to 70,813 sf (includes
future BUA).
■ Total Pervious — Change this value from 91,761 sf to 74,401 sf.

■ NOTE: Please also recalculate the acre values and percent of total site values for
o C12:
the above items.
Impervious Area Summary — Make the above changes to this table as well (since
it is the same table).
■ Impervious Summary — BMP:
• Drainage Area — Change this value from 119,602 sf to 119,449 sf.
• NOTE: Please also recalculate the acre values and percentage values for
the items in this table as needed.
Response: Plansheets updated as requested.
- Calculations:
o Change the drainage area from 119,602 sf to 119,449 sf and re -run the calculations.
Revise the design volume (if needed, Line 20, DA 1 Column of the Drainage Areas Page
of the Supplement-EZ Form) and minimum required treatment volume (Line 2, Sand
Filter Page of the Supplement-EZ Form) and any other design items as needed.
o Update the BMP Drainage Area sheet (in the "Drainage Area Maps" section of the
report) in accordance with the earlier comments.
Response: Calcs updated and drainage area map section updated.
If the BUA associated with the masonry wall needs to be included as "other" BUA, please make the
following changes (in addition to the above changes):
- Application:
o Section IV, 10:
■ Drainage Area 2 (SCM Bypass)
• Other on -site — Change this value from 0 sf to 1,000 sf.
• Future — Change this value from 17,360 sf to 16,360 sf (The BUA for the
masonry wall is being taken from the future BUA allocation).
Supplement-EZ Form, Drainage Areas Page:
o Entire Site Column:
■ Line 12, Future — Change this value from 17,360 sf to 16,360 sf.
■ Line 12, Other — Change this value from 0 sf to 1,000 sf.
Response: It was found that wall had already been accounted for within parking and no need to account
for twice.