20080367 Ver 1_Stormwater Info_20080829

Page 1 of 1
Atlantic Plan Engineering Corp.
From: Sue Homewood <Sue. Homewood@ncmail. net>
To: <[e-mail]>
Sent: Friday, August 15, 2008 4:25 PM
Subject: HC BBQ
Richard,
There are still a couple issues with the Stormwater Plan for this
project. They are:
My letter specifically required that the pump station O&M information be
added to the BMP O&M plan that was signed and notarized. That provides
us with documentation that the owner (who will be responsible for it
long term) is aware of the O&M needed. Putting the information on the
drawings does not suffice.
The soil media depth for the biorentention cell must be 3 feet for trees
and shrubs. I apologize that I did not identify that as an issue
previously.
Please let me know that you received this email. I 'will need to either
receive updated information (2 copies) that addresses these items by
August 29, 2008 or I'll have to send another letter which formally
requests this information. If you know that you will not be able to
submit new inforamtion by this date, please let me know asap via email
and I'll just go ahead and send the formal letter.
Thank you.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
RECEIVED
N.C. Deot. of ENR
AUG 2 7 2008
Winston-Salem l
Regional Office
2 (5_L:_?51WWR 0
AUG 2 9 2008
DENR - WATER QUALITY
WETLANDS AND STOR WATER BRANCH
Addendum for HC BBQ Project
Bioretention Operation & Maintenance Agreement
Watauga County, North Carolina
Pump Station Maintenance
• After each rain event a visual inspection will be conducted on the pump station to
ensure the pump operated.
• Quarterly, the pump will be filled with the water to check pump operation.
• The control panel will be checked to see if the warning light was activated.
Print name: Ken Gottfried
Title: Owner
Address: 485 Private Drive, Sugar Grove, NC 28679
Phone: [phone]
Signature:
Date: G Deb
I, P. Dawn Thomas, a Notary Public of the County of Caldwell State of North Carolina, hereby certify that
Ken Gottfried appeared personally before me this day and being duly sworn acknowledged that the
above form was executed by him. ??``
Witness my hand and notary seal, this Zion day of LJ 2008.
Seal
Notary
My Commission Expires q-91-0-
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BUF This maintenance record will be kept in a
log in a known set location Any deficient BW elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BW.
Important operation and maintenance procedures:
- Immediately after the b"etentionc cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
- Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
- Heavy equipment will NEVER be driven over the bioretention cell
- Special care will be taken to prevent sediment from entering the bioretention cell.
- Once a year, a soil test of the sod media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 15 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BW element: Potential problems: How I will remediate the problem:
The entire BW Trash debris is resent. Remove the trash/ debris.
The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to
bioretention cell erosive gullies have formed.. remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
ore-time fertilizer application.
The inlet device: pipe, The pipe is clogged (if Ux"og the pipe. Dispose of the
stone verge or swale applicable)- sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the Regmde the swale if necessary to
swale (if applicable). smooth it over and provide erosion
control devices such as reinforced
turf matting or nprap to avoid
future problems with erosion
Stone verge is clogged or Remove sediment and clogged
covered in sediment (if stone and replace with clean Stone.
a licable .
'V- QUTAn/ D:....,.a...?:.... nAAd 1D-.,2 n....... 1 ^f A
BMW element: Potential blems: How I will remediafie the pro
The pretreatment area Flow is bypassuig Regrade if necessary to route all
pretreatment area and/or flow to the pretreatment area.
gullies have formed. Restabilize the area after grading.
Sediment has accumulated to Search for the source of the
a depth greater than three sediment and remedy the problem if
inches. possible. Remove time sediment and
restabilize the pretreatment area.
Erosion has occurred. Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present Remove time weeds, preferably by
hand.
The bioretention cell: Best professional practices Prune according to best professional
vegetation show that pruning is needed practices.
to maintain optimal plant
health
Plants are dead, diseased or Determine time source of the
dying. problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is rwcessary.
Tree stakes/wires are present Remove tree stake/wires (which
six months after planting. can kill the tree if not removed).
The bioretention cell: Mulch is breaking down or Spot mulch if there are only random
soils and mulch has floated away. void areas. Replace whole mulch
layer >f necessary. Remove time
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are Determine the extent of the clogging
clogged with sediment - remove and replace either just the
top layers or the entire media as
needed. Dispose of time spoil in an
appropriate off-site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for time source of the
sediment and remedy time problem if
Me.
An annual soil test shows that Dolomitic lime shall be applied as
pH has dropped or heavy recommended per the soil test and
metals have accumulated in toxic soils shall be removed,
time soil media. disposed of properly and replaced
with new planting media.

BW element: Potential p!Rblems: How I will remediate the prdblem:
The underdrain system Clogging has Wash out the underdrain system.
if a linable
The drop inlet Clogging has Lean out the drop inlet Dispose of
the sediment off-site.
The drop inlet is Repair or replace the drop inlet
The receiving water Erosion or other sig is of Contact the NC Division of Water
damage have at the Quality 401 Oversight Unit at 919-
outlet. 733-1786.
L'- 0UTAA1 ID;....,s..wti- l1A714 D-, 2 D...... Z of A
Permit Number.
(to be provided by DWQ)
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.
Project name:HC BBO
BW drainage area manber:
Print name•Ken Gottfried
Title:Owner
Note: The legally responsible party should not be a homeowners association unless more than 500le of
the lots have been sold and a resident of the subdivision has been named the president.
I, ?? L?awr7 25 , a Notary Public for the State of
Wrih (mil%??A , County of (tdwe. Ll , do hereby certify that
lr l ? ? " wed personally appeared before me this
day of LLl 20, and acknowledge the due execution of the
forgoing bio lion maintenance requirements. Witness my hand and official seat,
SEAL
My commission expires q" Z1- 08
Form SW401-Bioretention I&M Rev. 2 Page 4 of 4
Address:485 Private Drive Sugar Grove NC 28679
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REVISIONS : 07-28-08 y SJIT, NAME Ti y I, ~ SHT NAME ~PROJECT
DRAWN BY: EB, PW APPROVED BY RJF ATLANTIC T AL -
DATE 06-02-08 _ PfROJ. NO. - - - - _ _ P.O, BOX 1691, HICKORY, NC 28603 DR~
PROJECT: PHONE: [phone] FAX: [phone]. WATAUG:~. COUNTY, 1'
e--rail atlplan.@cc~nninc.com

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