20070010 Ver 1_More Info Received_20070319

JOYNER, KEENY ~ ASSOCIATES
LAND PLANNING ~ SURVEYING
209 NORTH PEARL STREET ~,
P.O. BOX 7533
ROCKY MOUNT, NC 27804
PHONE :[phone] FAX : 252~985~G02G -
LETTER OF TRANSMITTAL DATE:3/16/07 JOBNO: 050184
ATTENITON: Cyndi Karoly
TO: DwQ
2321 Crabtree Blvd, Suite 250 ~ `I~Tilclbem3 Stream Crossix~
Raleigh, NC 27604 D~I~T(a Project # ~7r001U
WE ARE SENDING YOU THE FOLLOWING
O FINAL PLAT PRINTS. o PRELIMINARY PRINTS o ORIGINAL MYLAR O LEGAL DESCRIPTION
O FINAL PLAT PRINTS STAMPED O SKETCH PLAN STAMPED O CONSTRUCTION PLANS
PRELIMINARY PRELIMINARY X SEE BELOW
THESE ARE TRANSMITTED AS CHECKED BELOW
o FOR Approval o FOR YOUR FILES o AS REQUESTED
x FOR REVIEW ~ COMMENT o SEE REMARKS o FOR SIGNATURES ~ RECORDING
O REGULAR MAIL x FED-EX o E-MAILED oDELIVERED BY JKA oPICKED UP
COPIES DATE DESCRIPTION
5 Sept 2006 Plans for DWQ review -preliminary
5 3-10-07 Calculations, site visit report, O&M Agreement -Binded
1 3-16-07 Comments and Responses and Summary

REMARKS,
o aD~C D
Thank You! ~,A~reyson Griffin

~~ Joyner, Keeny & Associates
Planning & Land Surveying
a small business "HUBZone" certified company
March 16, 2007
DWQ
Attn: Cyndi Karoly
2321 Crabtree Blvd
Suite 250
Raleigh, NC 27604
RE: Wildberry Drive Stream Crossing
DWQ Project # 07-0010
Dear Ms. Karoly,
Below is the additional information requested by DWQ. The responses are listed there
after. Please let me know if you have any questions.
Sincerely,
~~~ ~ ~ I ~1'id~
N' s .Joyner, Jr. PLS
J/gg ,L,. tiu ~~~ ~ I
i i u,u: a+uf i i~t1~d~Al~
Additional Information Requested:
1. Please redesign all level spreaders according to the January 1, 2007 guidance, provide
applicable worksheets and a signed and notarized Operations and Maintenance
agreement.
This has been done and is attached
2. Please provide a typical level spreader detail.
Level spreader, forebay and bypass are all shown on sheet LS-14
Post Office Box 7533. 209 North Pearl Street • Rocky Mount • North Carolina • 27804-7533
252-977-3124 (office) • www.joynerkeeny.com • 252-985-6026 (fax)

3. Please revise your erosion control plan. Your permanent detention pond should be
redesigned as an extended wetland since you are in a Nutrient Sensitive Waters (NSW)
watershed.
The pond is desing to section 2.6 of the BMP standards. Detail of the pond is shown on
detai16.31 on sheet LS-12a and a detail of impoundment area is shown on sheet LS-
16
4. All outlets, including P-7, P-18 and P-19 appear to require diffuse flow.
Calculations and symbols have been added to sheet LS-15
5. Please provide an existing conditions map of the entire site, including contour lines,
buffer, streams, wetland and ponds.
Sheet LS-2a has now been added

I have provided a summary of the information that is
being provided to you.
A site Visit was conducted by DWQ September 8, 2005
A site visit was conducted 9-8-OS by Michael Horan, (Environmental Spec I) and he
determined that the exiting pond was not subject to buffers. Report is attached.
Level Spreaders
Level spreaders have been revised to comply with the Level spreader Design Guidelines
" final version" effective date January 1, 2007.
Attached is 6 level spreader worksheets plus a summary of the information that was
calculated for the level spreader, the fore bay and the pass. The level spreader detail is
shown on sheet LS-14.
Water Quality Pond
This site has been design to satisfy the City Of Rocky Mount for the reduction of
nutrients and the proposed pond that is shown was design as a BMP. The proposed pond
shown on the plan should satisfy the extended wetland type pond design section 2.6 of
BMP Practices. The proposed pond is design to remove 85% of pollutant according to
table 1.1 (table 1.1 attached). See detail 6.31 on sheet LS-12a and sheet LS-16. Please
note that the existing sanitary sewer is proposed to be realigned around the proposed
pond (see sheet LS-16)
Our options were limited therefore area A-10, rather than treat as a bypass flow, was
routed through the proposed pond area A-10 (16.04 acres) Attached are the calculations
for proposed water quality pond. The existing area A-10 and it existing concentrated flow
only has an existing impervious area of 11 %.

Defusing the flow from area A-10
The existing offsite flow is design to detain the existing flow from the offsite area A-10.
The existing flow from A-10 is designed to reduce the existing ditch flow. There is no
post construction flow since area A-10 is an off site flow. The offsite flow was used as a
to of set a portion of the post construction flow that was generate on-site. However the
fact remains that the flow after routing through the proposed pond was less that the flow
of the existing ditch. With this said, the flow is less after routing through the proposed
pond than would have been if this project had never been built. In any case to move this
project forward a level spreader (without the fore bay and bypass) has been shown
between the outlet of the proposed pond and the existing ditch.
O&M Agreement
This site is located in the City of Rocky Mount. Nutrient requirements and O&M
agreements will be signed before the final plat is recorded. However to prevent further
delay I have attached a signed and notarized O&M agreement for level spreaders.

~ f
O~ ~ ~0~ 0
Revised
Reduction Worksheet
FOR
Windstone Subdivision
n ~~~~ o
Joyner, Keens & Associates
P.O. BOX 7533
ROCKY MOUNT. NC, 27804
252-977-3124
March 10, 2007
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Table of Contents:
1-5 - Site visit by DWQ
6-11- Proposed water quality pond & Detention Pond
SCS Method Areas A-10
12-20- Level Spreader Calculations
21-28- Pre construction verses Post Construction
Calculations
29-30- Operation and Maintenance Agreement

Site Visit by DWQ

Sep 19 05 01:53p
~ z y
~~
l~~
Michael F. Easley, Govdmor
of wArFq '~ William G. Ross Jr., Secretary
`O~ QG North Carolina Department of Environment and Natural Resources
~ r Alan W. Klimek, P.E. Director
~ ~ Colleen H. Sullins, Deputy Director
Q ~ Division of Water Quality
September 9, 2005
TPBRRO#05-241
County: Nash
Skelly & Loy, LLP
6404 Falls of Neuse Rd
Raleigh, NC 27615
Attn: Mr. Keller
BASIN:
Neuse River Tar-Pamlico X
(I SA NCAC2B .0233) (l5A NCAC 2B .0259)
Complaint NOV Buffer Determination X
Incident ~ ~ Appeal Call
Project Name: Nicodemus Mile Property
Location/Directions: LQCated off of Nicodemus Mile, near the subdivision of Bent Creek
Subject Stream: UT to Stony Creek
Date of Determination: 9/8/05
Feature Start Buffer
GPS Points (if provided) Stream
Form Appeal
Call Located
on Soil
Surve Located on
USGS
Too hic
Pond Buiit in High Ground
Not Sub'ect X X
A Not Sub'ect X
B Subject throughout
ro e X X

Raleigh Regional Office 1628 Mau Service Cancer ~I(
Water Quality Section Raleigh, NC 27699-1628
phone [phone] Customer Service
facsimile [phone] 1-877-623-6748
p.2
2

Sep 19 05 01:54p p.3
Nicodemus Mile Property
9/9/2005
Page 2 of 2
This on-sire determination shall expire five (S) years from the dale of this letter. Landowners or affected parties
that dispute a determination made by the DWQ or Delegated Local Authority that a surface water exists and chat
it is subject to the buffer rule may request a determination by the Director. A request for a determination by the
Director shall be referred to the Director in writing do Cy„di Raroly ,DWQ Wetlands/401 Unit,1321 Crabtree
Blvd, Raleigh, NC 27604-2260. Individuals that dispute a determination by the DWQ or Delegated Local
Authority that "exempts° a surface water from the bujjer rule may ask jor an ad judicatory hearing. You must
act within 60 days of the date that you receive this letter. Applicants are hereby notified that the 60-day statutory
appeal time does not start until the affectedparry (including downstream and adjacent landowners) is notified of
this decision. DWQ recom,nends that the applicant conduct this notification in order to be certain that third
party appeals are made in a timely manner. To ask jor a hearing, send a written petition, which conforms to
Chapter I SOB of the North Carolina General Statutes to the Office oJAdministratlve Hearings, 6714 Mail
Sewice Center, Raleigh, N. C. 27699-6714. This determination is frnal and binding unless you ask for a hearing
within 60 days.
The (owner/future owners) should notify the Division of Water Quality (including any other Locals State, and
Federal Agencies} of this decision concerning any future correspondences regarding the subject property (stated
above). This project may require a Section 404/401 Permit for the proposed activity. Any Inquiries should be
directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the USArmy Corp of Engineers
(Raleigh Regulatory Field Office) at (919)-876-8441.
Respectfully,
Michael Horan
Environmental Spec. l
CC: Jean Maneule, US Army Corps of Engineers, Raleigh Regulatory Office
Wetlands/ Stormwater Branch, 2321 Crabtree Blvd, Suite 250, Raleigh, NC 27604
Planning & Development, City of Rocky Mount, 331 S. Franklin St., PO Box 1180, Rocky Mount, NC 27802
Water Resources, City of Rocky Mount, 331 S. Franklin St., PO Box 1180, Rocky Mount, NC 27802
Central Files
File copy
~ -~
3

Sep 19 05 01:54p
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APPROXIMATE PROPERTY BOUNDARY
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SKELLY and LAY, LLP SEPT. 20t}5 FtGWRE
SOILS MAP
Nicodarnus Mits
WepandlSiream Assessment
Rocky Mount, Nash County, North Carolina
Job No.: 2605022 ~ Sca{e: 1' = 800'

Sep 19 OS 01:58p p,5
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A('PROX)NIATE PROPERTY BOUNDARY - ,`! ~'* ~~~ ~~ ~°ii~ * I !,~
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~ ~r ~ `~`~' - -_ -~~: ~~ ~. _A,., _~ ~~ AREA TOPOGRAPHIC MAP
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~~~ ,_;~. ~- 4 r WeUandlSUeam Assessment
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.SOURCE: U.S.G.S. ~ MINUTE TOPOG ~ HtC c]UADRANGLE- Rodcy~MOUnt, Nath Ca ~~~ Job No.: 2605022 Scale: 1" = 300'
Comas Inmrval ~ 5 feol ~ * t : I` ~ "'+ •• R++a ~ ~ it ,~ I ;~ L'
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5

Proposed
Water Quality Pond
and
Detention Pond
SCS Method
Areas A-10

Windstone----Proposed Pond
1 /15/2007

CALCULATIONS FOR WAT ER UALITY PO ND

Basin area 16.04 acres
Percen t of im envious area 11°i°

HAVING A POND DEPTH OF 3 feet AND USING THE 85 percent of TSS

REMOVAL PERCENT FROM THE ATTACHED TABL E FOR THE PIEDMONT 0.63

THE WAT ER QUALITY POND SHALL HAVE THE REQUIRED WATER SURFACE AREA

TOTAL RUNOFF AREA 16.04 acres times 43,560 equal 698,702.40

698,702.40 square feet TIMES 0.0063 from table equal 4,401.83 square feet

REQUIRED WATER SURFACE AREA 4,401.83 square feet

ACTUAL WATER SURFACE ELEVATION AT THE PERMANENT POOL ELEVATION 10,892.25 square feet

THE SA/DA REQUIREMENT HAS BEEN MET ok

THE STOR AGE VOLUME REQUIRED FORA 1 INCH RAINFALL ABOVE THE PERMANENT POOL IS

698,702.40 times 0.083 (1 inch) equal 57,992 cubic feet

THE ACTU AL AREA OF PERMANENT STORAGE IS 79,287 cubic feet
THIS IS IN EXCESS OF 21,294.70 cubic feet
**.«*,..~,.....,~*.~,.,~.~,~,~,~~..,~..~...~,.,~,~*...,~.,t*.,t«~*.«*«.««...*..,~«,~*...,~,...~,~«~,.~.,~..,t.~,~.~..~...**.,~...,~,~*.*.~.«,~,t*.~«

FOREBAY CALCULATIONS .1 of an inch for the impervious area Impervious area is 1.77 acres

THE MINIMUM AREA OF THE FOREBAY

FOREBAY IS BASED ON 0.1 INCH OF RUNOFF 640 cubic feet

ACTURAL FOREBAY SHOWN

3 deep
81 width 5 long equal 1215 cubic feet
__ ok
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7

3. General
a. Basin shape should minimize dead storage areas and short circuiting. Length to width
ratios should be 3:1 or greater. (Barfield, et al., 1981, pp. 426.429; Florida DEP,1982,
pg. 6-289).
b. R the-basin is used as a sediment trap during construction, all sediment deposited during
construction must be removed before normal operation begins.
c. Aquatic vegetation should be included for a wetland type detention basin (Maryland
DNR, March 1987; Schueler, 1987, Chapter 4 and 9). A minimum ten foot wide shallow
sloped shelf is needed at the edge of the basin for safety and to provide appropriate
conditions for aquatic vegetation (Schueler, 1987). This shelf should be sloped 6:1 or
flatter and extend to a depth of 2 feet below the surface of the permanent pool (Shaver
and Maxted, DNREC, 1994). A List of suitable wetland species and propagation
techniques are provided in. Schueler (1987) and Maryland DNR (1987}.
d. An emergency drain (with a pipe sized to drain the pond in less than 24 hours) should be
installed in all ponds to allow access for riser repairs and sediment removal (Schueler,
1987).
i mP 3
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Table 1.1 Surface Area to Drainage Area Ratio For Permanent Pool Sizing For 85% Pollutant
Removal Efficiency in the Piedmont
9o Impervious
Cover 3.0 4.0 5.0 6.0 7.0 8.0 9.0

20 -0.97 0.79 0.70 .0.59 0.51 0.46 0.44
30 1.34 1.08 .0.97 0.83- 0.70 0.64 0.62
40 1.73 1.43 1.25 1.05 0.90 0.82 0.77 -
50 2.06 1.73 1:50 1.30 1.09 1.00 0.92
60 2.40 2.03 1.71 1.51 1.29 1.18 1.10
70 2.88 2.40 2.07 1.79 1.54 1.35 1.26
80 3.36 2. 8 2.38 2.10 1.86 1.60 1.42
90 3.74 3.10 2.66 2.34 2.11 1.83 1.67
Notes: Numbers given in the body of the table are given in percentages.
Coastal SA/DA ratios can be obtained from the local DWQ Regional Office.

Windstone--- Riser for Pro osed Pon d 10/20/2006

BUOYAN T CALCULATION

WEIGHT OF WATER DISPLACE D BY box

DIMENSIO NS OF BOX 5 X 5 X 2.29 = 57.25 CF

57.25 CF X 62.4 = 3,572 LBS WEIGHT OF WATER D ISPLACED

WEIGHT O F BOX

Walls 5 x 2.29 x 0.667 x 4 = 30.5486 cf
Bottom 5 x 5 x 0.33 = 8.25 cf
Total 38.7986 cf

38.7986 X 165 LBS/CF X 0.75 FACTOR SAFETY = 4,801
CF WEIGHT O F BOX

WEIGHT O F WATER DISPLACE D 3,572 < 4,801 WEIGHT OF BOX OK
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Level Spreader
CALCULATIONS
j2

trn1Q n~. 0`~ -c-b~ o
ofvls~f ~waTet~tuunr - ~.sritfo~csf~t (~1~1
~ e
~:
Conrad Persat:
Le~rel
~_
forebay area
Maonttrrrt Fiver Sit~l6er Sktpe
~x
Phone Nrardter:
30 It, (perpat~wlartofbxr)
2. 2 7 ar:. (an-etas and aft-aNe dratirdge b the Nvel spre®derj
ac. (on-she ana df~e ~aineae ~o ~e le+~l )
Co 'I a °Xs ~ ~-2%of ~e aonbtitutirtg irrrperviats surFace ar+eaj
(69G fix fores6ed, leaf ~ cover, 8% for titidt ground cover
flAapc. ~ 1'Mr Stom, Z. 3 ~
fu~oc. oischage ~ ~ ~rreader ~~'-,~
s6ipr lone 2 Vegeta~n _ r9_G. ~ ~ y~ a
Pr+e-tr~hn~ or Bypass Metlwd used '~ Sul4~ ~
a tt~iti~ tiers q~CIB.IST
~tial kt ~ space provided fo atdioate ftte following design ret~rerrterrts haae been met and supporting doanter~tiort is atfadted. /f a
rerpan~ent lras not bea- ~ a~cN an eitgolana~ior, of ttry. At a nirinrm, a cantplets abrnrwetsr plat subntiifFal indtdes
a worksheet for each BIr>P, desgn . f a,d ~ dig al eNPs and otdtet siur~ae detatis, a detatiod
dntinage plan and a ivlf- eroectrted operation and ntaitlatenoe apreeetatt. M irtcamplete sttbmital padoage wil resuR in a retprest for
adr~iortat etfcxxrrtatiort and wtil delay teal revieward approval of tits project.
"~~- / - Pn~t sie was vis~d prior to de~tirtg level spreader.
_~~l ; zeo ~ ~ of~ s~+~ P~ arracH n~n~o ultilral. w~oro ~ ©asr~lo coHnmc~ls:
-~-I-'~'~ kY ,~~I spreader is at least i3 n p~ ds iortltidc ground cover or ~s or 83 R per ds et cw~pied forest w~- f~
~ for 50-foot buffer. 50 g per cfs for 100-foot buffer, or 40 ~ per ds for 150doot baiter .
Pre-famtet! Scour Holes ae on flatatopes octhr.
T't"' Ir".Y No are kicafed ~ praberied Matters (must med rto ptat~cat al6arraeflres cn'taria).
A td any) and Bypass method read:
"'1'r' ~ BYf-ass comieyartoe metitod is speatiad and plan deta8s and caladatiorts are provided.
---~.- A~malve des~t aptieon is sped and plan deters and ~gr~ns are prov(ded.
`~ to least spreader and suft~tent strip is hyc~y and spabagj- sepa~e firm the bypass
No are boated in protected buffers.
Plat detail for the bype~ and outlets are provided.
The oper~ott and ateirdatar-ce agreenterrt atclttdes annual erosion and vegetation repac.
The operation and ntaitdenartoe agrr~rrtatt signed and rtotamed by the responsible party is ptotdded
t3

DWQ Project No. !~~" - ~7d ~ O
DMSION OF WATER CUALfTY -LEVEL SPREADER WDRKSHt:Ei (1120071
I. PROJECT NVFOttMATlO1
~~
Contact Person: ./
level Spreader lD: _~_
Level Spreader Length
Impervious Area
ForebaY Area
Maximwn Fr76er StripfBufier Slope
9~
Max. Disdra+ge from 1'IHr Sbnn
Max. Disdrange th Level Spreader
Filtw Strip/ Zone 2 Buffer Vegetation
complete the fo~owN9 inforrrration):
Pfrone Numbar:
th (perpendicular to Now)
. fo ac. (an-sibs and a~Ff-she draeia0e b the level )
2 I _, ac. (on-sNe and ofta0e drainage to the level spreader)
cu th (0.296 of the contr~ing knpervious surface area)
!0 96 (696 for forested, leaf Wier Dover, 896 for thick ground cover
b~ '~._ cfs
cfs
~4,y~ca s s 9~ve 1 cower or grass: canopied with lei titter
P-s-lr~rnent or Bypass Method Used Sava ~e
II. REQtI~ ITEMS CI~CItLfST
Initial in the space provided b indicate the toNowkrg design requirernerrts have been met and supporting dotsrrrrwrtation is aira~d. Jf a
regmrarrr~ has -rot bean roes; affadr an expianabi~n of w1g: At a rrrarbtprm, a r~rrrplebe sborrrrxiaber management Plan subrrattal indudes
a worksheet for each BMP, design cdlcrr, ~ and moons stowing aN BMPs and outlet sinx#ure details, a detailed
drainage Ptah and a fiiBY e~oecubed operation and rrraertenarroe agreerrr~rt. An i~rrrplete subrru'ltai package wNl resuN in a request for
additionct ir~rrrotiOrr and wr'N ~r delay final review and approve of the project.
Apo6~ts Initials
,/ ~ Project Site was visited prior b designing level spreader,
.~l Zoe Date of the Site visit PLEASE ATTACH TIME-0ATED DtGITAI PHOTO OF Fa(ISTING BUFFER CONDITIONS.
'1 ~.- r i' Level is at least !3 ft per cfs far thick ground a grass or 85 ft per t!s ~ tiorest with leaf
titterfor 5l1-toot butter; 50 ft per ds for !tm-fob twtter, or 40 ft. per ds for 150-foot buffer.
~ ~~'~' Pre-Peened Scour boles are on tit sbpes onhr.
No stnxtures ~e kx~bed in protected buffers (must meet no practical alternatives cxiteriaj.
Design ANerrt~ve (if any) and Bypass rrceNtod used:
~.~ ~/'~ BYP~ ~ method is and plwr details and c~lculatwns are providmi.
W I ~ Alternative design option is speafied and ply duels and calailatioris eye provided.
~ _,Disd>arge to level spreader and subsequent filter strip is hydretrpcally and spatiaAy separate from the bypass
discharge.
No strix~ures are located in protected buffers.
Plan details for the bypass arxf outlets are provided.
The operafiar and maintenance agreement includes annual erosion and vegetation reparc.
The operabori and maintenance agreement signed and notaiz+ed by the responsible party is provided.
I'~

DWG Pro)ect No._.._~-~- -- Cep ~ O
DMSION OF WATERQUALITY - Lt:11E1. SPREADER WORKSHEET (1/2007)
1. PROJECT INFORMATION (please canplete the {ogowing
Project Name : • ~~_ ..../ ~ ,~,.. _ _ ~ . ~ .
Contact Person:
Level Spreader ID:
1,5 3
Level Spreader Length ~L ~,
DrairrageArea 3. g~-aa
Irk Area . Z ac.
F~l+~ ar ft
ataxknum F~ stripJBufter slope !o x
!
(perpendicular to flow)
(on-si6e and aff~e drams b the level spreader)
(on-sibs ~d ol~i6e drainage bo the level spreader)
ro.2% of the contrfixrting sous surface area)
(696 for forested, reef cover, 896 for thick ground cover
Max. Discharge from 1'/Hr Storm 3 9 ~
Max. Uo Level Spreader ds
FilterScrip/Zone 2 Buffer Veget~ion ~, r A S s (thick ground Dover or grass: canop~d forest with leaf iilteer
groutxkover)
F're-O'+eabmerd or Bypass tlAethod Used ~_
11. REQUO2ED ITEMS lf~CiQ.IST
Inifiai in the space provided to inrfic~e the fiollowmg design ~ have been met and supporting ~ is attadred, li a
iras not bs~ me1; attaali an e~tarradion of why. l1t a rr~rimrun, a carrplete sborrrrwaber mana~rrrerrt plan subrrr'bal includes
a worksheet fior each BMP, design cakxrtafions, plans and speci6x~tions showing aN BMPs and outlet sfnxdrrre details, a detailed
drainage Plan and a fully ezearted operaliorr and rnair6errarroe a~reerrrerrt. M ~ sr~rra'tNd I~~ wia result in a request for
addr7r'arat brforn~iar and witl substantiaNy delay final review and approval of the project.
Aoolirwrts Inds
Rrojed SOe was visited Prior to designing lever ,
~ Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
~~,_Level spreader is at least 93 ft per r~ for ihidc ground cover or grass or ti5 ft per ds in canopied forest wfih leaf
fitterfor 50-foot buffer; 50 ft per ds for 100-foot txrtter, or 40 R per ds for 950-fioot iw~ar.
Pre-Formed Scour Holes are on flat slopes only.
~~_No stnxdures are located ~ Protected buffers (must meet no ptactir~l albernativsa rxr~eria).
Design A16arnafive rrf any) and Bypass method used:
7 ~ V r Bypass conveyance method is speafi~ and plan detatls and r~ulafions are
t~•
I~~___-_Albemative design option is specified and plan details and calculations ane provided.
_~~
Drscfr~ge b level spreader and subsequent filter strip is hydr~rfically and spafiaNy separate from the bypass
No stnrc6ures are located in protected butters.
~.,r J%rr Plan d~aiis fior the bypass aru! outl~s arse provided.
The operation acrd maintenance agreement indudes annual wosion and vegetafion repair.
The operafion and mairrtenance agreement s~ned and notarFred by the responsrble party is Provided.
15

DWQ Project No. ~~-~- --' (fib ` ~
onnsloal of waTFR Qualm - LEVEL sPREaor~ wt~RxsHEET (1noo~
L PROJECT INFORMATION complete ~ folbwi iMornrationj:
Project Name : e
~~ ~ Phone Nutr~er:
Level ID: ~~ - ~
Level Spneadei Length _ B$ ~.
Drayage Area ,rte ac.
lmpetvroru Area _~ ~.._ ac.
FAY ~ ----4~ R
Maxanwn Filter StriplBuffer Sbpe !. 96
9~
(perpendicular 1p flow)
(on-site and of f-s~e drainage b the level spreader)
(on-site andoff-sine drainage b the level spreader)
(0.2% of the contrr~utirrg kr~tvious surface area)
(fi96 for forested, leaf Dover, 896 for thick ground cover
Max. Discharge from ,'Mr Storm 4. a cis
Max. a bo Level Spreader ~ ~
Filter Strip) Zone 2 Buffer Vegetation (thick ground Dover or grass: canopied forest with leaf
9~)
Pre-U+eatrnent or Bypass Method lJsed __~~~ -
II. REgJNtED ITEMS CitIEGGOJST
Initial in the space provided m indicate the fogowirrg design r+aquiremerrts have been met and serpporlkrg docurnerrtation is attactred. !f a
bas Trot been m~ afbrdr an e~lanafion of wfry. At a mormpnn, a complete s6arrnwaber management Plan sulxar~al
a vrori<she~ far each BMP, deter r~alcrrlafions, plans and ins shovring atl BMPs and outlct structure details, a detailed
drainage plan and a fuNy eroecubed operation and maintenance agremrrent. An inoomplebe Package wit resufl in a request for
addib'aral erfarrratiar and vriN substarrtialyr delay feral review and approval of the Project.
Aoo~r-ts Initials
~~ Loo y Date of the Site visit PLEASE AgTIN~-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
T-w r ` Level spreader is at least 13 R per rds for ihidc ground coves or grass or 65 it per cfs rtr forest vutih leaf
litter for 50-foot fnrffer; 5Q tt p~ ds for 100-foot tnrttrr, or 40 R per cfs for 150-foot twtfer.
,~.!^9 Pre-Forrrred Srxmr Holes are on tit slopes ony.
,~y_.,~„~r No sMu~trres are kxsdedm protected buffers (must meet no practice alternatives cnTeria).
~+gn ~~ (fl ~Y) ~ rrretiiod used:
'i1~/~ BYP~ ~ rnetlrod a spedtied and plan detafls and cakxrlatimrs are provided.
~ J ~ ~+9n ~ end Plarr details card calarlatiars are provided.
~l ]I~ Disdr~ge to level spreader and subsequent filter strip is hydrerticafly and spatiatly separate from the bypass
disctrarge.
?1,~ l~r No structures are locked in protected buffers.
_ i~ / ~9 Plan details for the bypass 2nd outlets are prove.
w,a. 1// The operatiwr and mainbm~r~e agreement inductee anrnrat erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the rile PAY ~ Provided
~~

OWQ Project No. ~ - ~~t~l ~
DMSION OF WATER QUALITY - LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION
Project Name : W. ~
Contact Person: ^~
Level SpreaderlD: G5 .
Level spreader ter>glh
Imperviars Area
Forebay Area
Maximum Filler Str~rJBuffer Skrpe
9~
Max. Discharge from 1'Mr Sbnrr
Max. Discharge to Level Spreader
Filtw Strip/ Zone 2 Buffer Veget~ion
k~rnpl~e the tiolkrwing information):
i'hone Number.
3 / ft (perpendicaitar toflow)
z ~ 3 ~ ac. (on-she and off~e dn3inage to the level spreader)
D. 4s ac. (on-si6e and off-sbe drainage to the level spreader)
~1 ~.~~ ft (0.296 of the cnrrU impervious surface area)
[~_ 96 (696 for Bested, leaf frttler cover, 896 for thick grand Dover
2, Y ds
Z. Y ~
(thick ground Dover or grass; canopied forest vraflr leaf litrer
9-'~-~~)
~ or Bypass Method Used SuJ~, ~~
n. REQUntED rrEwls a~aatsr
Initial ~ 1he spate provided bo indu~te the design requirements have been met and supporting docunrenta8 is attacred. if a
regtaremertt ltas rrof been rrrel; aftadr an exp~rmElwr of why. At a rrmrarann, a corrrplete stamwater managerrrent plan subnritial includes
a worksheet B each BMP, design cafarlatioras, plans and ins sh<-vMng al BMPs and outfit strucure details, a detailed
drairage plea arul a irrMy executed operation ar>d maintenance agreenrerrt. An inoornplete s~nrtltal Package wN restrR in a request B
addBai information and witl substantially delay fnal review and appror~ of the project.
Apo Iniials
.~ .,.. rr Project Site was vis6ed prior fb designing level spreader.
J~2 0 o v Date of the Site visit. Pl.EAS'E ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 ft pw cfs B tfridk ground cover a grass or fi5 ft per ds ~ k forest vrtltr leaf
B 50-foot bu(ter; 50 6 per ds B 100-foot buts, tx 40 tt. p~ t~s for 150-foot buffer.
~I/Ill Pre-Farmed Sk~rrr Holes are on flat skrpes only.
~_~_No are krks~ted er protected buttes (rrnrst meet no practical alternatives crfleria).
Desgn Afbemative {d any) and Bypass method used:
'>~.~ / Bypass conveyance meflrod is spr~ified acrd plaxr detatls and ta>ICUIaBs are provided.
_~~[-~.~,,,,_Albe,native design option is spedfied and plan details and k~kxrlatiars are provided.
~~ ~ Discharge to level spreader and subsequent filter strip is hydrau~lly and spatially sepawbe iron the bypass
lam' No structures are located in protected buffers.
Plan details for tine bypass and outlets arB pro~ded.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maertenarroe agreerrrerrt signet and trotaraed by ltte regpons~ party is provirkd.
~7

Dwo l~ioject Wo. ~~r -C`X~ 1~
DMSWN OP tNATOt Q{tALJTY - I.EVEt ~r t~f
L PROJC-CT M~ORYATtON oonrple6e the arfarrratiar~
ProjecttNarne: S.r ~
Cotdact Person: Phone Nkur~r:
tend Spreader ID: LS - !d
teael Spreader Lerrgir R
Drainage Area / ac.
trnperviousArea o, si ~.
Forebay Arm ~, 2 2. ~`pr tt
MmdtrNAn F~ SiripJBr~r Slope Ce ?~ %
~~
(an-site and oiF-~10e die ~o the level apeaderj
(on-she and o~1e gape ~ the level saeaderl
{02% of the contriMrbirg ingrerviorrs surface ones)
(f)96 for toasted, leaf iffier cover, t146 for thick ground Dover
Macc. Dlsdrarge flan 1'Air Storm , ~S" r:(s
l1Aax. large ip Level Spreader S ds
Fier Strip/ Zone 2 But6er Vegetadar q Y4 5.~._ (thick gramd over or gnu canopied feast w~ leaf Mbar
-T- ~
Pnent ar Bypass Used ~/ ~ ~
a mss ct~cla.~r
~a1 in vie space praiided !o indicate vie foioeing design requsetnarts iraMe been met and supporfirrg dooumerdaion is atfadred. if a
rarAriraarentfras notb~er,nref: allisetr an eugofaraeiian ofMtry. At a nininsen, a oanplste stionnereter nrsnsgetrretrtplan sr~rrdlai inductee
a wiorkvlreet iar eadr BIY~, design calculaiorrs, plans and spec~icaMars strowirg ai BMPs and oufist structrue detafis, a detailed
drainage plan and a ivih- e~aaarted aperaMon and nrairiaxerroe agreerrreM. An tnoomptete subrrriltal package wil reauR in a + for
addifia>et idommfiar and wi srr6stadiaiy defy final review and appranal of Mrs project.
'~-..r-Y Prujer# SNe ways vis~d prior to drg lard speeder.
Jv 1... 2T DO `_pafe at the ate visit Pt.~ASE ATTACH Ttl~-DA7~D DIGRAL PINTO ~ EXISTpdG BUFFSR CONDI31ONS.
'a+' // Level speeder is at lest !3 R par cfs for Muds ground cover or grass or 8511 per ofs in carwpied feast raiir lest
filter for 50-loot 6tdir 501t per ds for 100-foot tamer, or 4011 per ds for 15fl~foot .
nl,~A Pr+s-Fanned Scour Holes era on Aat skrpes only.
No sfrtiduras era located n potected iadfers (must meet no practical apemeMves rxi~ria).
Design Cd any) and Bypass method used:
carueyanae nreMrod is specified and plan defais arrd calodatiorrs era provided.
//~~ Attenreiva deaigrr op0ar is specified and plan defais aid r~rNilars era provided.
b level spreader and auf~eequerrt t~ airip is irydrauicaiy and spafie~, separate lam tt,e byperss
~ No are located in p~ected buffers.
l'tan deter for fibs bypass and ouiefs are pn-vided.
- -.-.The aperaion and nranoe agreeme~ inductee arrraal en~sion ana vegefabon repak.
..-~ ~ meer~rranoe agreement signed and rrotaimed byMrs respars~le pert', is pnrdded.
1~

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Operation and Maintance
Agreement
Z`j

LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT
The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff.
Maintenance activities shall be pertormed 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. Acxumulated 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 afl 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 replace/replant dead or damaged vegetation.
2. The contractor should avoid the placement of any material on and prevent constn~ction traffic across
the structure. If the measure is damaged by oonstrudion traffic, it shall be repaired immediately.
3. inspect and repair the collection system (e.g., catch basins, pipes, swafes, 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 notify DWQ of any problems with the system or prior to any changes to
the system or responsible party.
Print name: Cow t ~ w t (~•~•,.f ~a .~. tea... ~ LLB

rnone:
~ ~
Signature:
Date: ?s.~tL~?
Note: 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.
I,~~~. ~~~ r , a Notary Public for the State of ,
County of tjx;~l1 , do hereby certify that ~ CL'~XV ~1r. ~
personally appeared before me this ~_ day of MC2~~ , and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
`~ t
~'~~~ caC1(`J ~`'~•
r' ~ ,,..... ..,,, ~?. ~ S's
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CO UN~,..~
SEAt_
My commission expires ~r~~5- ~ ~f~("~
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