MECKLENBURG COUNTY
Land Use and Environmental Services Agency
<insert delivery method, US MAIL, CERTIFIED, ELECTRONIC MAIL, or FASCIMILE>
Re:
Incomplete Total Phosphorus Mitigation Application
Application #
TP
Dear
:
Please be advised that the Total Phosphorus Mitigation Application #
that you submitted
for
has been found to be incomplete. The following information is needed to complete the
application:
Information Regarding Site Needing Mitigation (must be completed for both Off-Site &
Buy-Down Options):
Name of Development
Street Name & Number
Original Tax Parcel
Name of Creek System Where Development is Located
Total Area of Project (acres)
Total Disturbed Area (acres)
% Built Upon
Land Development Fee Paid
Amendment to Permit#:
Type of Development: Commercial; Residential; Mixed Use; Subdivision (As defined in the
Post-Construction Storm Water Ordinance.)
Jurisdiction/Town
Zoning Designation
Resubmittal: Yes or No (If yes provide notification date that resubmittal was required)
Type of On-Site BMP to Achieve 50% TP Removal
Pounds of TP Being Mitigated For
Owner’s Name
Owner’s Address
Owner’s Phone Number
Owner’s Fax Number
Owner’s Email Address
PEOPLE ● PRIDE ● PROGRESS ● PARTNERSHIP
700 N. Tryon Street ● Suite 205 ● Charlotte, NC 28202-2236 ● (704) 336-5500 ● FAX (704) 336-4391
http://stormwater.charmeck.org
Option #1: Complete for Off-Site Mitigation (Information concerning the site where
mitigation is to be performed):
Name of Site
Street Name & Number
Tax Parcel
Name Creek System Where Site is Located
Total Area of Site (acres)
Total Area to be Treated (acres)
% Built Upon of Treated Area
Type of Development: Commercial; Residential; Mixed Use; Subdivision (As defined in the
Post-Construction Storm Water Ordinance.)
Jurisdiction/Town
Zoning Designation
Resubmittal: Yes or No (If yes provide notification date that resubmittal was required)
Type of Off-Site BMP to be Installed (plans must be attached)
Pounds of TP Reduced by the Off-Site Retrofit Project
Property Owner’s Name
Owner’s Address
Owner’s Phone Number
Fax
Owner’s Email
Attachments to Application to be submitted for Option #1 Off-Site Mitigation:
Provide (6) sets of calculations showing the pounds of total phosphorus generated on the
project site, pounds of total phosphorus to be removed to meet the 70% removal requirement,
pounds of total phosphorus removed by the on-site BMP (at a minimum 50% removal
efficiency is required on-site), pounds of total phosphorus to be mitigated by off-site BMP(s),
pounds of total phosphorus generated by the mitigation site, pounds of total phosphorus
removed by the off-site BMP(s), and total phosphorus removal efficiency of the off-site
BMP(s). It is recommended that the Site Evaluation Tool (SET) used for compliance with
the Huntersville Low Impact Development Ordinance be used to perform these calculations.
SET is available at the following website: http://stormwater.charmeck.org (Select
Developers, Contractors, Engineers and Regulators; Select Low Impact Development (LID);
Select Huntersville LID; Select Mecklenburg County Site Evaluation Tool v3.3)
Six (6) sets of plans with two (2) sets of calculations for the off-site BMP retrofit project
designed to achieve an equivalent or greater net mass removal of total phosphorus as would
be achieved by removing 70% of the total phosphorus from the proposed site. On-site BMPs
must be constructed to achieve 50% removal of total phosphorus. All designs must be in
accordance with the Mecklenburg County Post-Construction Storm Water Ordinance Design
Manual. All plans and calculations must be sealed by a professional designer. All plans
must contain the following:
Details showing the structures dimensions, including top and bottom of storage area as
well as depth and storage volume.
BMP table with specifics on each BMP including calculations illustrating compliance.
BMPs shall be named on plans as follows: “Project or subdivision name – BMP Type –
Number.”
Easements for all BMPs and drainageways.
Existing and proposed paved roads, buildings, structures and utilities.
Basin contours labeled and tied into existing contours.
Construction sequence.
North arrow.
Vicinity map.
Parcel Tax Number.
Jurisdiction.
Legible scale.
Property boundary and adjoining property boundaries and owners.
Watershed District.
Delineation of on-site drainage areas including number of acres.
A legally valid instrument demonstrating that the applicant has land rights to perform the
BMP retrofit project on the property.
A Phase I environmental site assessment must be provided indicating that there are no
areas of environmental concern on or immediately adjacent to the site.
An Operation and Maintenance Agreement and Maintenance Plan must be attached to the
application form for each BMP included in the project.
Option #2: Complete for Buy-Down Mitigation (Information necessary for calculating
cost):
TP loading over 20 years (total phosphorus loading at 50% reduction minus loading at 70%
reduction x 20)
TP loading over 20 years x buy-down rate of $1,000/lb.
Add $4,400 for operation and maintenance fee
Increase total by 12% to Cover Administrative Costs, which indicates total mitigation costs
Attachments to Application to be submitted for Option #2 Buy-Down Mitigation:
Provide (6) sets of calculations for the following:
1 TP loading without BMP =
2 TP loading at 70% reduction =
3 TP loading 50% reduction =
4 TP loading difference (row 3 – row 2) =
5 TP loading difference over 20 years (row 4 x 20) =
6 Buy-down rate (loading difference over 20 years x $1,000/lb mitigated)
(row 5 x $1,000) =
7 Buy-down rate + $4,400 for operation & maintenance fee (row 6+ $4,400)
=
8 Buy down rate + fee increased by 12% for administrative costs (row 7 x
1.12) =
9 Total Cost of Buy-Down (same as row 8) =
lb/yr
lb/yr
lb/yr
lb/yr
lb
$
$
$
$
In addition to the above, the following is needed for the application to be considered complete:
Please be aware that if a revised application is not re-submitted to this Office within sixty (60)
calendar days from the date of receipt of this notice, the application shall be considered
withdrawn, and a new submittal for the same or substantially the same project shall be required
along with the appropriate fee. The submittal of an incomplete application shall not suffice to
meet the deadline.
If you have any questions, you can contact me at
Sincerely,
CC:
Planning Department
Form #PCO10
.