20070379 Ver 1_More Info Received_20070620

CLEARWATER ENVIRONMENTAL CONSULTANTS, INC.
June 19, 2007
Ms. Cyndi Karoly
NCDWQ
1650 Mail Service Center
Raleigh, NC 27699-1650
Subject Property: Cedar Pointe Crossing
DWQ Project # 07-0379
Buncombe County, North Carolina
Gashes Creek [040302, 6-78-21, C]
Dear Ms. Karoly,
Enclosed are five copies of the additional information you requested for Cedar Pointe
Crossing in Buncombe County, North Carolina. The original Nationwide Permit 39 and
12 application was submitted February 14, 2007, and then a modification was sent on
April 30, 2007 in response to DWQ comments.
Clearwater Environmental Consultants, Inc. (CEC) received comments from the N.C.
Division of Water Quality (DWQ) on -May 21, 2007 regarding the stormwater
management plan designed to remove 85 percent TSS according to the DWQ Stormwater
BMP Manual. In response to comments contained in the DWQ letter, the applicant has
developed a preliminary stormwater management plan that shows the types, sizes and
locations of the proposed stormwater BMPs on the site plan. For each proposed BMP,
the applicant has included a DWQ worksheet for the BMP with all items in Part I:
Project Information. The applicant understands that DWQ approval of this preliminary
stormwater management plan may result is obtaining a conditional 401 certification. The
applicant will submit a final stormwater management plan for express review within 90
days of receipt of the conditional 401 certification for written approval.
Please do not hesitate to contact me with any questions or comments at [phone].
Thank you,
~ ~~
C/~~z~f%
~Q~
R. dement Riddle, P.W.S. ~ Df
Principle SUN 2 0 2007
°~"R • wary .
CC: Kevin Barnett, DWQ-Asheville 718 Oakland Street n`~BRA~1Gf
Hendersonville, North Carolina 28791
Phone: [phone] Fax: [phone]
www.cwenv.com

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DWQ Project No, D-7 ° C~ ~ 7,9
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION {please complete the following information}:
Project Name : C ED/-~~ PD I t`~ T~ GR SI fi~
Contact Person: M i KC ~~LL~. MAT~t"NJ fCt~OL -Phone Number: f87$1 Z32-'~-33fa
For protects with multiple basins, specify whi h basin this worksheet applies to: _ A- i
Permanent Pool Elevation 2_-? ~ r, , [_~ ft. {elevation of the orifice invert out}
Temporary Pool Elevation ~ ~ ~ ~; . ~ ft. (elevation of the outlet structure invert in}
Biorefention Surface Area err ~ ~ sq. ft.
Drainage Area Ca, 19 ac. (on-site and off-site drainage to the basin}
Impervious Area O ~ J 9 , ac, (on-site and oft-site drainage to the basin}
Rational C Coefficient . ~)t`~
Size % _ ~ % {either 5% in av(sand under drain or 7% in wlo}
Inlet Velocity (-~ ~ "1c1 fps
Inlet flow depth -.1' ; ~ ~ in
Depth to Ground Water ! f:~ ~~ ft,
Planting Soil Infiltration Rate ZM in,rhr. (t»e soil layer down to 4 feet}
In-Situ Soil infiltration Rate ~.. In.lhr, (the soil layer below 4 feet or below the sand bed}
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. tf a
roqurrement has not been mef, affach an exptanafton of why. At a minimum, a complete stormvaater 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.
Applicants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet,
Wafer table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area will draw down in less than 4 days.
Planting soil infiltration rate is greater than 0.52 in/tir.
The In-situ soil infiltration rate is greater than 4.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR Stormwater Best Management
Practices Manual, Apri! 1999}
Plan deiaiis for the bioretention area provided.
Plan details #or the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No, C~7 ° Q ~ 7~
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information);
Project Name ; C ~.DPeR Po I Ttr. G~. ~{ I~G
Contact Person: M I K~ I~AL.~Ih'IAI~'~'ltJ t'CW9t~Phone Number;
For projects vdith multiple basins, specify whiEh basin this worksheet applies to: ~ ~'~.,.
Permanent Pool Elevation r l.'::~ 1°~ . f~ ft. (elevation of the orifice invert out}
Temporary Pool Elevation `Z. `l.. ``a t'.:i , f'x ft. (elevation of the outlet structure invert in)
Bioretention Surface Area ~ ~•~ ~ sq. ft.
Drainage Area (~ ~'~ `~ ac.
Impervious Area ~J... ~ ac.
Rational C Coefficient , ~
Size % ~
Inlet Velocity ~~ l ~ fps
Inlet flow depth _ O , ~.~ in
Depth to Ground Water t t`J ~ ft,
Planting Soil Infiltration Rate '~. in,lhr.
In•Situ Soil Infiltration Rate ~.,. in.lhr,
(on-site and off-site drainage to the basin)
(on-site and off-site drainage to the basin}
(either 5% in wlsantl under drain or 7% in wlo)
(the sail layer down to 4 feet)
(the soil layer below 4 feet or below the sand bed}
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided fo indicate the following design requirements have been met and supporting documentation is attached, !t a
requirement has not been mef, attach an expfanafton of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and ouflet structure details, a detailed
drainage plan and a ful{y 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.
Applicants Initials
No vertical sand bed is proposed
The Bioretention area is at least 40 feet by 15 feet.
Sheet Flow is provided at inlet,
Water fable depth is greater than 6 feet,
Minimum of 6" ponding is provided.
The ponded area will tlrava down in less than 4 days.
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater than 0.2 inlhr,
A planting plan 4vith species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR Siormwater Best Management
Practices Manual; April 1999}
Plan details for the Bioretention-area provided,
Plan details for the inlet and outlet are provided.
operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note #hat underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. t~~' - C~ ~7J
DIVISION OF WATER QUALITY - BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name : C!~T7f~R Pd t r~T~,. GxU.SSf t~G
Contact Person: M l Kti~ l~l~ L-~/MAT~'it3 tCt~{pf_ phone Number (f3?8l Z 3Z- ~ 33
For projects with multiple basins, specify whi h basin this worksheet applies fo; ~ ~ 1
Permanent Pool Elevation Z ~-~9. ft. (elevation of the orifice invert out)
Temporary Paoi Elevation ~. Z ~~ .Q ft. (elevation of the outlet structure invert in)
Bioretention Surface Area ~ `~ fir' sq. ft.
Drainage Area ~ ~ ((~ ac.
Impervious Area p . t CQ ac.
Rational C Coefficient . 9
Size % ~
Inlet Velocity 1 ~ 3~ fps
Inlet slow depth [~~ I 1 in
Depth to Ground Water 1 ~ ~° ft.
Planting Soil Infiltration Rate 2;, in.lhr
In-Situ Soil Infiltration Rate ~. in,lhr
(on-site and off-site drainage to the basin}
(on-site and off-site drainage to the basin}
(either 5% in wlsand under drain or 7% in wlo)
(the soil layer down fa 4 feet)
{the soil layer below 4 feet or below the sand bed)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. 1f a
requirement has not been met, attach an explanatran of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing ail 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,
Applicants Cnitials
No vedical sand bed is proposed
The bioretention area is at least 40 feet by 15 feat,
Sheet flour Is provided at inlet.
Water table depth is greater than 8 feet,
Minimum of 6" ponding is provided.
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater Phan 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified In plans.
Planting sail meets minimum soil specifications (NCDENR stormwater Best Management
Practices Manual; April 1999}
Plan details for the bioretenfion area provided.
Plan details for the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please nose that underdrains beneath the planting sail are acceptable in the Piedmont and Mountains

DWQ Project No. C7 7 " d ~ 79
DIVfSION 0[= WATER QUALITY - BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name : C ~.Dl~P PO t NTH. GR p.S~i N Ca
Contact Person: Kt~ L~/~.I...~. h'IAT~'ItJ tCr<fOL -Phone Number (~) Z32-1-rr3~
For projects with multiple basins, specify tivhi h basin this worksheet applies to: ~ '"
Permanent Pool Elevators ~ ~ ~ ~., ~ ft. (elevation of the orifice invert out)
Temporary Pool Elevation Z ~- ~ '~~ ~ ft. (elevation of the outlet structure invert in}
Bioretention Surface Area kJ' ~ 9 sq. ft,
Drainage Area O ~ ~ ~ ac.
Impervious Area (2 , 7 C) ac.
Ratianai C Coefficient ~ ~~
Size % ~
Inlet Velocity '~. ~ ~ ~~'~ fps
Inlet Clow depth C~ . 3(~ in
Depth to Ground Water 4 ~ ~4• ft.
Planting Sail Infiltration Rate 2. in.lhr.
In-Situ Soil Infiltration Rate ~. in.lhr.
{on-site and off-site drainage to the basin)
(on-site and oft-site drainage fa the basin)
(either 5% in w/sand under drain or 7% in wfo)
(the soil layer down to 4 feet}
(the soil layer below 4 feet or below the sand bed)
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, !f a
requirernent has not been met, affach an explanafron of why. At 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 4vill substantially delay final review and approval of the project.
Aoalicants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet.
Water table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area will draw down In less than 4 days.
Planting soil infiltration rate is greater than 0.52 in/hr,
The in-situ soil infiltration rate is greater than 0.2 inlhr,
A planting plan with species and densities is provided.
Mulch Payer is specified in plans,
Planting soil meets minimum soil specifications {NCDENR stormwater Best Management
Practices Manual; Apri11999)
Plan details for the bioretenfion area provided.
Plan details for the inlet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that underdrains beneath the planting soil era acceptable in the Piedmont and Mountains

DWQ Project No. C~ % ° C7 ~ 7J
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information}:
Project Name : Cl:.DAz'4~ Pv I ~ T~- GT~.OSSi h~ G _.
Contact Person: M I K~ t`7, l~•i..E I°'1f~f'ItJ I~fCNAI.`~Phone Number. I~ ~~) Z 3Z - ~°4~ 3~
For projects with multiple basins, specify whi h basin this ~vorksheet applies to: ~ W 3
Permanent Pao! Elevation 2 2 ~ f~, t~3 ft. {elevation of the orifice invert out)
Temporary Pool Elevation ~ '~ ~"7 ~ ft, (elevation of the outlet structure invert in}
Bioretention Surface Area ~ ~ ~ sq. ft.
Drainage Area C~ ~ 39 ac.
impervious Area ~ ~ ~ ~O ac.
Rational C Coefficient ~?
Size % ~
Inlet Velocity ~ ~ ~ ~ fps
Inletflow depth G?, 3C~ in
bepth to Ground Water ~ ft.
Planting Soil Infiltration Rate `~, in,lhr,
In-Situ Sail Infiltration Rate ~.~ in,lhr,
(on-site and off-site drainage to the basin}
(on-site and off-site drainage to the basin}
(either 5% in wlsand under drain or 7% in wlo)
(the soil layer down to 4 feet)
{the soil layer below 4 feet or beloev the sand bed)
It. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, !f a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a vaorksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fatly executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final revie~v and approval of the project.
Aoolicants Initials
No vertical sand bed is proposed
The bioretentian area is at least 40 feet by 15 feet,
Sheet flow is provided at inlet.
Water table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0,52 inlhr,
The in-situ soil infiltration rate is greater than 0,2 inlhr,
A planting plan wish species and densities is provided,
Mulch layer is specified in plans.
Planting soil meets minimum snit specifcations (NCDENR stormwater Best Management
Practices Manual; April 1999)
Plan details for the bioreiention area provided,
Plan details for the inlet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please Hots that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No, C7~' ° CJ ~ -1,~
DIVISION OF WATER QUALITY - BlORETENTION AREA WORKSHEET
I, PROJECT INFORMATION (please complete the following information):
Project Narne : C 1~17PeR Po I N Tt~. G~,bS~l {~~ ~,
Contact Person: I KC i7- AL.E MAI~t'It~ (~ItC(~Of.~iPhone Number: ~?.~31 Z 3Z- L¢ 3~
For projects with multiple basins, specify whi h basin this worksheet applies to: ~ ~ ~;
Permanent Pool Elevation ~.`2lp,~ ft, (elevation of the orifice invert out)
Temporary Pool Elevation _ 2 7, fA ~~, C..~ ft. (elevation of the outlet structure invert in)
Bioretention Surface Area ~ ~ 9 ~ sq, ft.
Drainage Area _ ©. '~ ~} ac,
impervious Area {~, "i O ac.
Rational C Coefficient _ .~ ~
Size % 5
Inlet Velocity ~.. '7 (~ fps
Inlet flow depth C:~ ,.~ (+r~ In
Depth to Ground Water _ . ~:~"' ft.
Planting Soil Infiltration Rate ~ in.lhr.
in-Situ Soil infiltration Rate ~~ inJhr,
(on-site and off-site drainage to the basin)
(on-site and off-site drainage to the basin)
(either 5% in wlsand under drain or 7% in wlo)
(the soil layer down to 4 feet)
(the soil layer below 4 feet or below the sand bed)
ii. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have Been met and supporting documentation is attached. Jf a
requfremenf has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a urorksheel 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 substantialiy delay final review and approval of the project,
Aoalicants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet,
Water table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0,52 in/hr.
Tha in-situ soil infiltration rate is greater than 0.2 inlhr.
A planting plan with species and tlensiGes is provided,
Mulch layer is specified in plans.
Planing soil meets minimum soil specifications (NCDENR Stormwater Best Management
Practices Manual; April 1999)
Plan details for the bioretention area provided.
Plan details for the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that untlerdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. Ov1 °' ~ ~7~
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
E, PROJECT INFORMATION (please complete the following information):
Project Name ; C ~ DA~~ Po i r~T~ GR SI CJ C,
Contact Person: i KC l"7la• L.E Mkl~t'Ifd !CN ~L Phone Number i_ ~8) 2 3Z °'-~ 33 L)
For projects with multiple basins, specify whi h basin this worksheet applies to:
Permanent Pool Elevation ~ ~~ .~~ ~ ~ ~~ ft. (elevation of the orifice invert out}
Temporary Pool Elevation "~'~ ~~, ~ ft, (elevation of the outlet structure invert in)
Bioretention Surface Area ~ ~ '"'1 sq. ft.
Drainage Area (~, 7 J ac. (on-site and oft-site drainage to the basin}
Impervious Area , Z.C~ ac. {on-site and off-site drainage to the basin)
Rational C Coefficient
Size % 5 % (either 5% in wlsand under drain or 7% in wlo)
Inlet Velocity `~. ~ ~ ~ fps
Inlet flow depth ~ ~ ~.~~° in
Depth to Ground Water ft.
Planting Soil Infiltration Rate in.>fir. (the soil layer down to 4 feet}
In-Situ Soil infiltratien Rate ~ in.lhr, {the soil layer below 4 feet or below the sand bed)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, !f a
requirement has not been met, attach an axpfanatron of why. At 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 informatien and will substantially delay final review and approval of the project,
Aoolicants Initials
No vertical sand bed is proposed
The Bioretention area is at least 40 feet by 15 feet,
Sheet tiow is provided at inlet.
Wafer table depth is greater than 6 feet.
Minimum of 6° pontling is provided.
The ponded area 4vill draw down in less than 4 days,
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater than 0,2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR Siormwater Besf Managemenf
Practices Manual; April 1999}
Plan details for the Bioretention area provided.
Plan details for the inlet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided,
Please nose that untlerdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. D7 ° D ~ 7~
DIVISION OF WATER QUALITY - BIORETENTEON AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name : C EU/~R Po t r~T~. GR ~I h~
Contact Person: MtKC t"~AI~.~ 1`°lA1~r"t~! fCt-!OL Phone Number: f~2~1 Z3Z-~-~3~f~
For projects with multiple basins, specify whi h basin this worksheet applies to: G ` ~
Permanent Pool 1=levation 7 ~~ ~ "~. D ft. (elevation of the orifice invert out)
Temporary Pool Elevation '~ ~- ~ ~ , ~) ft. (elevation of the outlet structure invert in)
Bioretention Surface Area '~ ~i' ~~. sq. ft,
Drainage Area ~ +'~~ ac. (on-site and afi-site drainage to the basin}
impervious Area D + ~,C7 ac. {on-site and oft-site drainage to the basin}
Rational C Coefficient +
Size % ~ % {either 5% in wlsand under drain or 7% in wlo)
inlet Velocity ~ • ~D fps
Inlet flow depth C:J ~ ~. ~• in
Depth to Ground Water l r~ -tr fi.
Planting Soil Infiltration Rate ~r in.lhr. (the soil layer down to 4 feet}
In-Situ Soil Infiltration Rate ~ in.lhr. (the sail layer below Q feet or below the sand bed)
Il. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requfrernent has not been met, attach an explanation of why, At a minimum, a complete siormwater 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 fuliy 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.
Applicants Initials
No vertical sand bed is proposed
The bioretenfion area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet,
Water table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0.52 inmr,
The in-situ soil infiltration rate is greaser than 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans,
Planting soil meets minimum soil specifications (NCDENR Stormwater Best Management
Practices Manual; April 1999}
Plan details for the bioretention area provided,
Plan details for the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided,
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. D? °' Q ~ 79
DIVISION OF WATER QUALITY • i3fORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the fallowing information);
Project Name : C i*.T7/~-~ PD I ~ "'t"t~ G~ gal i~l
Contact Person M 14~C-. ~~L.-~ MAl~'IiJ tCWtal. Phone Number. t~ 28l Z 3Z- ti~ 3~ G}
For projects with multiple basins, specify whi h basin this tivorksheet applies to, (~~ ~
Permanent Peol Elevation ~-~~ ~ ~ ~ ft. (elevation of the orifice invert out}
Temporary Pool Elevation ~• l ~'L , ~ ft. (elevation of the outlet structure invert in)
Bioreten#ion Surface Area i" Is' ~ ~ sq. ft.
Drainage Area C~ ~ ~- © ac. (on-site and off-site drainage to the basin)
Impervious Area C_2 • ~(~ ac. (on-site and off-site drainage to the basin)
Rational C Coefficient • ~3
Size % ~ % (either 5% in wlsand under drain or 7% in wlo)
Inlet Velocity ~ ~ a d Fps
Inlet flow depth ~ . "1 in
Depth to Ground Water ~!~,:~. -°F=° ft.
Planting Soil Infiltration Rate '~ in.Ihr. (the soil layer down to 4 feet)
In-Situ Soil tnfiltration Rafe ~• in.lhr. (the soil layer below 4 feet or below the sand bed}
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the folioaaing design requirements have been met and supporting documentation is attached. Jf a
regairemenf has not been met, attach an explanation of why. Af a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculatioris, 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 vrill result in a request for
atldiiionai information and will substantially delay final review and approval of the project.
Applicants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet.
Sheet 11ow is provided at inlet.
Water table depth is greater than 6 feet.
Minimum of 6" ponding is provided.
The ponded area will draw down in less than 4 days.
Planting soil Infiltration rate is greater than 0.52 inlhr,
The in-situ soil infiltration rate is greater than 0.2 in/hr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR stormwater 13esi Management
Practices Manual; April 1999)
Plan details for the bioreten#ion-area provided.
Plan details for the inlet and outlet are provided.
operation and maintenance agreement signed and notarized by the responsible par#y is provided.
Please note that underdralns beneath the planting soil are acceptable in the Piedmont and Mountains

Project No. DWQ ~ ~' " ~ ~ ~
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Manaaement Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet far 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
I. PROJECT INFORMATION (please complete the following information):
Project Name : ~~~~~ 1~~~,r ^i C~ t lti~ ~~.. ~": ~ ~ ~`:ri° f~-~~fr
Contact Person: C`-°~'11~1~-~" I I`~! t ~,~i `~ t~~: ~ Phone Number: 7
For projects with multiple basins, specify which basin this worksheet applies to:_ ~ ""
Drainage Area: i_j acres Percent Impervious Area:~•~:
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Enviranmeni, Health and Natural Resources, November 1995) and Adminis#rative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. 1f a requirement has not
been rnet, attach an exptanaffon of why.
Aoolicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain
The basin length to width ratio is greater fhan 3;1.
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
Basin io be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour era provided,
Additional treatment to meet the 85% TSS removal effciency is provided.
Access for clean-ou# and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
tJncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
if used as a temporary sediment basin, plans Indicate clean-out prior to ilnal operation.
A site specifc operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signal by the responsible party and natarized.

DWQ Project Na. C 9 ~ ~' +~ ~~ ~ ~7
DIVISION OF WATER QUALITY -GRASSED SWALE WORKSHEET
I. PRO,tEC71NFORMATI
Project Name : ~~
Contact Person:
Swale lD:..:~~,~,~~::'.t~It..,"~l.a
Grass Swale Length
Tributary Drainage Area
Impervious Area
Max. Velocity from 2 Yr. Storm
Max, Velocity from 10 Yr. Storm
Min, side slopes
Steepest Effective Siope
Cover Crop
IL REQUIRED ITEMS CHECKLIST
information};
~~~ • ft,
1. In 7._. fps
1 ~ Lvt~: fps
~~ ~ ratio
{ I L7f.~ ftlft
w.Gt~ •i~tc
Phone Number:
{at least 100 ft. per tributary acre)
(on-site and off-site drainage to the swale)
{on-site and off-site drainage to the swale)
{2 fps max.)
{3:1 min.}
(check dams maybe used)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, tf a
requrremenf has not been mef, attach an exptanatton of why, At 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 wiii result in a request for
additional information and will subslanfially delay final review and approval of the protect.
Applicants Initials
Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted
Swale carries only stormwater flow
Water table depth is greater than 1 foot.
Plan details for the Swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement Includes annual erosion and vegetation repair, and at least twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party Is provided.

DWQ Project No. ~ ~ ~ ~~ ~
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
I. PROJECT INFORMATION (please complete the fallowing information:
Project Name: ~~~~~•~- €'CJI'€~~`k`~~~7>v.~~~I~t..t
Contact Person: 1~ ~?~'T~-i i 1~-I ~~ t~~.~-E r7 l..~a Phone Number: (R~~1 `Z.;3`X~ ~~°~-
Swale ID: '~ (~1 ~:T ~ ..~ j .., I
Grass Swaie Length l ~ ~~ ft. (at least 100 ft. per tributary acre)
Tributary Drainage Area ~ ac. (on-site and off-site drainage to the swale)
Impervious Area ~ k G ac. (on-site and off•site drainage to the swale}
Max. Velocity from 2 Yr. Storm ~ ~ ~ fps (2 fps max.}
Max. Velocity irorn 10 Yr. Storm ~ r~ fps
Min, side slopes "^~> ~~ I ratio (3:1 min.)
Steepest Effective 5fape «a l t ~~ ~-~ ftlft (check dams maybe used}
Cover Crop v~ a -~ ~ ~^
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, tf a
requfremenf bas not been met, attach an expfanafion of why, At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and ouElet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package wilt result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Vegetation Plan provided on plans
The underlying soils are permeable and non•compacted
Swale carries only stormwater flow
Water table dep#h is greater than 1 toot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided,
Check dams provided,
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least Twice
annual mowing.
The operation and maintenance agreement signed and notarized by the responsible party is provided.

DWQ Project No, O7 - C,~ ~ 7J
DIVISION OF WATER QUA!-iTY - BIORETENTION AREA WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name: C!*.T~/~-6: PolNTI~ GRd ~(t~lG
Contact Person M I KC L~/~L~ MP~1'!tJ fCt~0i.5Phone Number x_8281 Z 3Z - ~ 33 O
For projects with multiple basins, specify whi h basin this worksheet applies ta: l~ ~ '~~
Permanent Paof Elevation F~ ~~ z~,~ ft. (elevation of the orifice invert out)
Temporary Pool Elevation '~. ~ ~ ~} ~ ~ ft. (elevation of the outlet structure invert in)
Bioretention Surface Area I t ~~ sq. ft,
Drainage Area ®~'~! ~ ac,
Impervious Area ~ ~ ~ ~ ac.
Rational C Coefficient . ~°?
Size
InletVelacity { ~ (~ fps
Inlet flow depth `? ~C7~ in
Depth to Ground Water fd ft.
Planting Soil Infiltration Rate ~ in,lhr
In-Situ Soil lnfiltration Rate ~ in,lhr
(on-sife and off-site drainage to the basin)
(on-site and off-site drainage to the basin}
{either 5% in wlsand under drain or 7% in tivlo}
{the soil layer dawn to 4 feet)
{the soil layer below 4 feet or below the sand bed)
REQUIRED ITEMS CHECKLIST
lnitlai in the space provided to indicate the following design requirements have been met and supporting documentation is attached, ff a
requirement has not been met, attach an explanation of why. At 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 sully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay fine! review and approval of the project,
Applicants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet,
Sheet flow is provided at inset,
Wafer table depth is greater than 6 feet.
Minimum of 6" ponding is provided,
The ponded area wilt draw down in less than 4 days.
Planting soil infiltration rate is greater than 0.52 in/hr.
The in-situ sots infiltration rate is greater than 0.2 inlhr,
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR stormwater Best Management
Practices Manual, April 1999)
Plan details for the bioretention area provided,
Ian details for the inlet and outlet are provided.
operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. C~7 - Q X79
DIMSION OF WATER QUALITY - BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name : G t*.D~'4~ Po t rJ T>~.. GK ~! N G
Contact Person: M l icy L"7. /~ L-~./MAT~t'It~} fCN4C Phone Number f82S1 Z 32 - ~3- 33 Q
For projects with multiple basins, specify tivhi h basin this worksheet applies to: ~" 1
Permanent Pool Elevation ~ ~~~ ~~,~~ ft. (elevation of the orifice invert out)
Temporary Pool Elevation "~ "l~ ~„9 ~ (.rl ft. (elevation of the outlet structure invert in)
bioretention Surface Area 1 4 ~ ~ sq, ft.
Drainage Area ~~ ~ "~ ac.
Impervious Area C:~ ~'~ ~ ac.
Rational C Coefficient • `~
$IZ8
Inlet Velocity 4 . L~'~ fps
Inlet flow depth 4 . `~s~:~ in
Depth to Ground Water i {~ t ~3 ft.
Planting Soil Infiltration Rate ~. in.lhr
In-Situ Soil InfiiltraEion Rate ~ in,lhr
II. REQUIRED ITEMS CHECKLIST
(on-site and off-site drainage to the basin)
(on-site and off-site drainage to fhe basin)
(either 5% in wlsand under drain or 7% in vdlo)
{the soil layer down to 4 feet)
(the soil layer below 4 feet or below the sand bed)
Initial In the space provided to indicate the following design requirements have been met and supporting documentation is attached. 1f a
requrremenf has not been met, attach an explanation of why. At a minimum, a complete starmwater managemen# 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.
Aoolicants Initials
No vertical sand bed is proposed
,The bioretention area is at least QO feet by 15 feet.
Sheet flow is provided at inlet.
.Water table depth is greater than 6 feet.
Minimum of 8" ponding is provided.
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infilfration rate is greater than 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications (NCDENR Stormwater Best Management
Practices Manual; April 1999)
Plan details for the bioretention-area provided,
Plan details for the inlet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No, ~ ~ ° ~ ~ 7~
DfVISION OF WATER QUALITY - BlORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete fhe fallowing information):
Project Name: C)aD/a~P~ PG~I N`f't= GxUS~(h!G
ContactPersorr MItC~ S~A1_.l~ MAt~`t'ItJ ICt-f01. Phone Number; (87A1 23Z-'-(-33U
Far projecfs with multiple basins, specify whi h basin this worksheet applies to: ~ "~
Permanent Pool Elevation ~~ ~~~ ~ ~~ ft. (elevation of the orifice invert cut)
Temporary Pool Elevation , ~~ `7 C~~ ~ ~ ft, {elevation of the cutlet structure Invert in)
Bioretentfon Surface Area ~'~`? sq, ft.
Drainage Area b ~ ~.`~ ac. {on-site and off-site drainage to the basin)
Impervious Area c~'~ ~ l ~ ac. (on-site and off-site drainage fo the basin)
Rational C Coefficient ~ ~~
Size % ~ % (either 5% in wlsand under drain or 7% in w(o)
InletVelacity ~`~ ~`~ ~ fps
Inlet flow depth t + C.~ in
Depth to Ground Water C.o'°@- ft.
Planting Soil IniilUation Rate ~. in.lhr. (the soil layer down to 4 feet)
In-Situ Soil Infiltration Rate ~. in,Ihr. (the soil layer below 4 feet or below the sand bed)
IL REQUIRED ITENfS CHECKLIST
initial in the space provided to indicate the #ollowing design requirements have been met and supporting documentation is attached, !f a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormvdaier management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outset 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 wilt substantially delay final review and approval of the project,
Applicants initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet.
Water table depth is greater than 6 feet,
Minimum of 6" ponding is provided,
The ponded area 4v11 draw down in less than 4 days.
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater than 0.2 lnlhr.
A planting pSan with species and densities is provided.
Mulch layer is specified in plans,
Planting soil meets minimum soil specifications (NCbENR Stormwater Best Management
Practices Manual; April 1999)
Plan details for the bioretention area provided.
Plan details for the inlet and outlet are provided.
An operation and malntenance agreement signed and notarized by the responsible party is provided,
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. C~7 ~ Q ~ 79
DIVISION OF WATER QUALITY - BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information);
Project Name: CI=.D,~4R Pot h3Ti~ GK S(t~G
Contact Person; M I KC ~!~ L.~ MAC-itJ fCN(JL Phone Number: f8 2~l 2 32 - ~-~ 33 D
For projects with multiple basins, specify whi h basin this worksheet applies to: ~ ° ~i
Permanent Pool Elevation ~ ~C.n ~ , ~~ ft. (elevation of the orifice invert out)
Temporary Pool Elevation ~ ~ /~!~ ~ f_-~ ft. (elevation of the outlet structure invert in)
Bioretention Surface Area ar~ ~ ~ sq. ft.
Drainage Area ~ ~ ~,~ l;~ ac. (on-site and off-site drainage to the basin}
Impervious Area ~~ ~'?• ac. (on-site and off-site drainage to the basin}
Rational C Coefficient ~ fed
Size % 5 % {either 5% in wlsand under drain or 7% in arlo}
Inlet Velocity ~ • ~ `~ fps
Inlet flow depth 1 R [r~~i in
Repth to Ground Wafer ~ ft.
Planting Soil infiltration Rate ~ in.mr. (the soil layer down to 4 feet}
In-Situ Soil Infiltration Rate ~ in,lhr. (the soli layer below 4 feet or below the sand bed}
11. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicafe the following design requirements have been met and supporting docurnentatian is attached, tf a
requirement has not been met, attach an expfanafion of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing ail 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 informaUcn and will substantially delay final review and approval of the project.
Applicants Initials
No vertical sand bed is proposed
The bioretenUon area is at least 40 feet by 15 feet.
Sheet flow is provided at inlet,
Water table depth is greater than 6 feet,
Minimum of 6" ponding is provided.
The ponded area will draw down in less than 4 days,
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater Phan 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specif€cations (NCDENR Stormwater Best Management
Practices Manual; April 1999}
Plan details for the bioretentian area provided,
Plan details for the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided,
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. C77 " ®~ ~'9
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the fo~owing information):
Project Name: Cl~l7~~. Polr~Tt~. GROSSit'YiG
Contact Person: M t E<ta ~~ 1..,.E MA1~"t-ItJ fCt~ AL Phone Number j~~S"I Z 32 - ~- 33 Q
For projects with rnultipie basins, specify vahi h basin this ~vorksheet applies to: ~ ° ~
Permanent Pool Elevation ~~ ~.~ ~~ ~ ~>~ ft. (elevation of the orifice invert out)
Temporary Poof Elevation I 1 rr~ Chu C'. fi. (elevation of the outlet structure invert in)
Bioretention Surface Area ~ ~ ~ ~? sq. ft.
Drainage Area '~. ~ ~ ( ac. (an-site and o#f-site drainage to the basin)
Impervious Area t , ~.~C~ ac. (on-site and off-site drainage to the basin)
Rational C Coefficient , ~c~
Size % 5 % (either 5% in wlsand under drain or 7% in wlo)
Inlet Velocity ~ ~} ~J fps
Inlet flow depth '~ ~'` '~ in
Depth fo Ground Water t~ ft,
Planting Soil lnfiltratian Raie ~, in.lhr. (the soil layer down to 4 feet)
In-Situ Soil Infiltration Rate ~ in.lhr. (the soil layer below 4 feet or below the sand bed)
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. !f a
requirement has not been mef, affach an explanation of why. At 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 approve{ of the project.
A_ pplicants Initials
No vertical sand bed is proposed
The bioretention area is of least 40 feet by 15 feet.
Sheet flow is provided at inlet.
Water table depth is greater than 6 feet.
Minimum of fi" ponding is provided.
The ponded area will draw down in less than 4 days.
Planting soil infiltration rate is greater than 0.52 inlhr.
The in-situ soil infiltration rate is greater than 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specifications {NCDENR stormwater Best Management
Practices Manual; April 1999)
Plan details for the bioretention area provided.
Plan details for the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note that underdrains beneath the planting loll are accepfable in the Piedmont and Mountains

DWQ Project No. ~-7 ~-% `" (~.~ '~~, ~ ~)
D1VlSI0N OF WATER QUALITY • LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information);
Project Name : ~-% f` t ~/'~r~'• ~.}rte 1 1'1"1 f --t~C7 ~>`a! l~l_
Contact Person: ~'i f~ `7 .~. 1ZT'(N C L Phone Number: (~t~'~3) 1. ~~ ~ -- z,~ zz~ sa
Level Spreader ID: - ~ ~~~ ~ i
Level Spreader Length ~-~r~ ft. (perpendicular to slow)
Drainage Area ~l_, C) ac, {on•site and off-site drainage to the level spreader)
Impervious Area ~ , `J ac, {on-site and off-site drainage to the level spreader)
Maximum Filter StriplBuffer Slope ~3 % (6%for forested, leaf littler cover, 8% for thick ground cover)'
grass
Max, Discharge from a 10 Year Storm
Max, Discharge io Level Spreader
Filter StriplBuffer Vegetatian
Pre-treatment or Bypass Method
1 ~> ~ ~-~ cfs
I . `~ cfs
~~+4(1~ ~~t~.~trtr-
~,~.71i i ~.~~~. ~~ t;.3.,
II. REQUIRED ITEMS CHECKLIST
{thick ground cover or grass, canopied forest with leaf litter
groundcover)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached, tf a
requirement has not been met, attach art explanation of why. At 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.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft par cfs in canopied forest with leaf
litter.
Pre-Form Soour Holes are on flat slopes only
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 filter 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 maintenance 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 tp the Draft Leve! Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffet area.

DWQ Project No.. C7 ~' ° ~ ~ 7 J
DIVISION OF WATER QUALITY • BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name; C1~171~P Pol n1T~ GP~U,SiNCa
Contact Person: IIC~ t~~4..~ iwl/~-riiJ fCFlQL Phone Number. ~f~2~,) Z3Z-ti~.33Q
For projects with multiple basins, specify whi h basin this worksheet applies to:
Permanent Pool Elevation a~ ~ ~ ~~~ ft. (elevation of the orifice invert out)
Temporary Poal Elevation ? ~~ ~3 (7 ~; ft. (elevation of the outlet structure invert in)
Bioreiention Surface Area (~ ~~ sq. ft,
Drainage Area ~ ~f~ ac. (on-site and off•site drainage to the basin)
Impervious Area
Rational C Coefficient f.7, ~ ~' ac.
~ ~'~ (on-site and off-site drainage to the basin)
Size % ~ % (either 5% in wlsand under drain ar 7% in wlo)
InlefVelocity 1, `~ fps
[nlet flow depth '~;, , `~ Q in
Depth to Ground Water Z~}' •}. ft,
Planting Soil Infiltration Rate '~, in.lhr. (the soil layer down to 4 feet}
In-Sllu Soil Infiltration Raie ~~ in.Ihr. (the soil layer below 4 feet or below the sand bed}
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. ff a
requirement has not been mef, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing alt BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incamplefe submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Aooiicants Initials
No vertical sand bed is proposed
The biaretentian area is at feast 40 feet by 15 feet.
Sheet flow is provided at inlet.
Wafer table depth is greater than 6 feet.
Minimum of 6° ponding is provided,
The ponded area ~vill draw down in less than 4 days.
Planting soil infiltration rate Is greater than 0.52 in/hr.
The in-situ sail infiitration rate is greater than 0.2 in/hr,
A planting plan with species and densities is provided.
Mulch layer is specified in pions,
Planting soil meets minimum soil specifications (NCDENR stormwater Best Management
Practices Manual, Aprii 1999)
Plan details for the bioreteniion area provided.
Plan details for the iniet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided,
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. C77' ~ ~ 79
DIVISION OF WATER QUALITY - BIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information);
PrajectName: C~bprR PDINT~. GT~.05`51t~G
Contact Person, MIKC l~~.l_.~ h'1At~Tli~ tC~t©f.~rPhoneNumber, (~~$} Z32-~}-33p
For projects with multiple basins, specify whi h basin this worksheet applies to: _~°
Permanent Pool Elevation ~~ =1 ~. ~ ft. (elevation of the orifice invert out}
Temporary Pool Elevation _`l '~ ~ b. ' _, ft. (elevation of the outlet structure invert ln}
Bioretentian Surface Area (~~ ~'
~
~ sq. ft.
~
Drainage Area l~
~ ac.
Impervious Area f~, C~r~ ac,
Rational C Coefficient
Size %
~ %
Inlef Velocity ~ , ~ ~ fps
Inlet flow depth _ °~ . ~ in
Depth fa Ground Water ' ~ ~ ft
Planting Soil infiltration Rate in.mr.
in-Situ Sail Infiltration Rafe in,lhr.
(on-site and off-site drainage io the basin)
{an-site and off-site drainage to the basin)
(either 5% in wlsand under drain or 7% in wlo)
{the soil layer down to 4 feet}
{the soil layer below 4 feel or below the sand bed)
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided io indicate the following design requirements have been met and supporting documentation is attached. !f a
reguiremenf has not been rnet, attach an explanafron of why, At 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 licants Initials
No vertical sand bed is proposed
The bioretention area is at least 40 feet by 15 feet,
Sheet slow is provided at inlet.
Water table dep#h is greater than ii feet,
Minimum of 6" pending is provided,
The pondetl area will draw down in less than 4 days.
Planting soil infiltration rate is greater than 0,52 inlhr.
The in-situ soil infiltration rate is greater than 0.2 inlhr.
A planting plan with species and densities is provided.
Mulch Payer is specified in plans,
Planting soil meats minimum soil specifications (NCbENR Stormwater Best Management
Practices Manual; April 1999}
Plan details for the bioretention area provided,
Plan details for the inlet and outlet are provided.
An operation and maintenance agreement signed and notarized by the responsible party is provided,
Please note that underdrains beneath the planting soil are acceptable in the Piedmont and Mountains

DWQ Project No. ~ ~ ° d ~ /~
DIVISION OF WATER 4UALlTY - eIORETENTION AREA WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name : C .~ l~ -• •~ ~'D I N `T'tw. GK. ~.~I Pk C~
Contact Person: ~ l"~/~• t.,.lr. MAT~'~'I t~ tCN nt ~ Phone Number: f~ 2A) Z ~?_ ~ i~. 33 Q
For projects with multiple basins, specify whi h basin this worksheet applies to; ~~ ° ~r
Permanent Pool Elevation ~ ~. `l < , , (.~ ft. (elevation of the orifice invert out)
Temporary Poof Elevation "~... ~. In ~ ft, (elevation of the outlet structure invert in)
Bioretention Surface Area ~ ~'~ sq. ft.
Drainage Area O ~ °Z.`? ac, (on-site and off-site drainage to the basin)
Impervious Area !S ,'~ °~ ac. (on-site and off-site drainage fo the basin)
Rational C Coefficient ~ ~ 7
Size % ~ % (either 5% in wlsand under drain or 7% in wlo}
Inlet Velocity ~ ~ ~ {'(r" fps
Inlet slow depth k ~ ~ C~ in
Depth to Ground Water + • _ ft
Planting Soil Infiltration Rate in,lhr. (the soil layer down to 4 feet)
In-Situ Soil Infiltration Rate ~ in,lhr. (the sail layer below 4 feet or below the sand bed)
11. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been mat and supporting tlacumentaiion is attached. !f a
requirement has not been maf, attach an explanation of why. At 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,
Aoolicants Initials
No vertical sand bed is proposed
The bioreteniion area is at least 40 feet by 95 feet
Sheet Flow is provided at inlet.
Water table dep#h is greater than 6 teet.
Minimum of 6" ponding is provided.
The ponded area will draw down in less than 4 days.
Planfing soil infiltration rate is greater than 0,52 in/hr.
The in-situ soli infiltratian rate is greater than 0.2 inlhr,
A planting plan with species and densities is provided.
Mulch layer is specified in plans.
Planting soil meets minimum soil specificalions (NCDENR stormwater Best Management
Practices Manual; April 9999)
Plan details tar the bioreteniion area provided.
Plan details far the inlet and outlet are provided,
An operation and maintenance agreement signed and notarized by the responsible party is provided.
Please note tha# underdrains beneath the planting soil are acceptable in the Piedmont and Mountains