20070010 Ver 1_Stormwater Info_20070102

~De~, 28.2006 5:33PM Joyner Keeny & As~oc~~~ate, No. 1~1° ~', ~

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DWQ Project
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION
Project Name trld,
Contact person: IS1-S .
Level Spreader 1D~ ,
Level Spreader Length
Drainage Area
Impervious Area
Maximum Filter Stnpll3utfer Slope
grass Q 6rN'ZVC
ImPe1''t'I ouS K~
Max. Discharge from a 10 Year Storm
Max. Discharge to Level Spreader
Filler StriplBuffer Vegetation
complete the following information)
L1~' ft.
3 . ~_ ac
Z .~,0 ac
~~
tit ~~ °-~
~la cts
cfs
_....,r~Jrass
~-'Vt..O~rh Pl'y'
Pre-treatment or Bypass Method ~( FlQ W
II. REQUIRED ITEMS CHECKLIST
Phone Number:
(perpendicular to flow)
(on-site and oH•site drainage to the level spreader)
(on-site and oH•site drainage to the level spreader)
(6% for forested, leaf littler cover, 8% for thick ground cover)'
sec o.~t0~che d Spread srieek
(thick ground cover or grass, canopied forest with leas litter
groundcover)
Initial ~n the Space provided to indicate the following design requirements have been met and supporting documentation is attached, If a
regwremenl has not been met, attach an explanation o(why. Al a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
.A lic~ants Initials
A~11JJ Level spreader is at least 13 h. per cfs for thick ground cover or grass or 100 ft per cts in canopied forest with leaf
litter.
N~QrIG Pre-Form Scour Holes are on flat slopes only
ALOII'L~ No structures are located in protected buffers'
if bypass method specified in the Draft Level Spreader Design Option Document.
~(, ~ Bypass method is specified,(if applicable) and plan details and Calculations are provided
Discharge to level spreader and subsequent filler strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided
The operation and ma~nlenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
`Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler Cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor valiance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected bufer area.
.- _ --__ , ~ ~, ,,, ~,~~~~~~ ~,~~~r~r nnn~ ~o~ ~~an

LEVEL SPREADER OPI"cRATION ANO MAINTENANCE AGREEMENT
The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff.
Maintenance activities shall be performed as follows:
1. After construction and until vegetation has been established, level spreader(s) shall be inspected after
every rainfall. Thereafter, level spreader(s) shall be inspected at least every month and more
frequently during the fall season and after heavy rainfall events:
a. Accumulated sediment, leaves, and trash shall be removed, and repairs made if required.
b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and
concentrated flows downhill from the level spreader(s).
c. A level elevation shall be maintained across the entire flow-spreading structure at all times.
Repair or replace the level spreader if it is damaged.
d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the
level spreader surface.
e. Repair eroded areas and replacelreplant dead or damaged vegetation.
2. The contractor should avoid the placement of any material on and prevent construction traffic across
the structure. If the measure is damaged by construction traffic, it shall be repaired immediately.
3. Inspect and repair the collection system (e.g., catch basins, pipes, swales, riprap) four (4) times a year
to maintain proper functioning.
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance
procedures listed above. I agree to notiry DWQ of any problems with the system or prior to any changes to
the system or responsible party.
Print name~~~, ~ l C ~nr ~~ -
Title: ~'''~- lY~_
Nate: The legally responsible party should not be a homeowners association unless more than 50% of the
.lots have been sold and a resident of the subdivision has been named the president.
IC~~, a.f~n ~~~~r~~l , a Notary Public for the State ofdC~(~j~a.~\~r1~ ,
County of ~~~\ , do hereby certify the ~ ivy ] . C~~~
personally appeared before me this ~_ day of _, ~, and acknowledge the due
execution of the forgoing wet [wetland) detention basin maintenance requirements. Witness my hand and
official seal,
My commission expires-~~-~~
Pagelofl
„r,~,~~~~ ,o a~~~av iauAor ieiacc.G Q(I(17 'Al'~a~
Date: ~~o~ -~~-(1(~