SW8070633_Historical File_20071026

I
f
j`. �
Yl
ICI t• ..,.. `
R
I�I
1
J Yibouc
V-��Uf SE --
(ow VIK wt.
��.j�...K. �,'f:Gf�. .; { ri' )11,0,'�i_ �U; I,.• L•t: F'T�1F
� ,.yam 115 11�1C`�L-,�,us,. e'j.� '��" f7YSx,.p• _
�11
i6
iI+
f
'1

�KIK�C�c�c��c�clK�C�K�KIK�C�c�KIKIKIKIK�C�C�K�K�K�K%K�CIK�CIK�C�K��CIK�C�C�K��CJK�C�K�C�K�C�C�CJKIK�C�C�K�C�K�K�K�C7K�C�C�C�K�CIK�C�K�K��C�K�KX�CIK�C�C�C�C�C�C�C�C�C�K�K�C�cIK�C�K�KIK�C�K�KIKIK�K
P. 01 �K
�c TRANSACTION REPORT
OCT-22-2007 MON 03:18 PM
FOR; NCDENR 9103502004
SEND
J",
DATE START RECEIVER—© TX TIME PAGES TYPE NOTE M# DP
�K OCT-22 03:18 PM 94544241 24" 2 FAX TX OK 960
TOTAL 24S PAGES: 2 .K
�pF WATF,9 4: —
Q
Q �
October 20, 2007
Franklin Jerome Coker, Manager
Cape Fear Precast, LLC
P.O. Box 10368
8260 River Road
Southport, NC 28461
Pose' FexNota 7671
aap"►
m
Itiedl
coma. I
�
Phone r
P1mne 0
Fmc4! r
Subject: Request far Additional Information
Stormwater Project No. SWe 07oe33
Cape Fear Precast LLC In Burton Industrial Park
Onslow, County
Dear Mr. Coker.
The Wilmington Regional Office received a Stormwater Management Permit Application
for Cape Fear Precast, LLC an June 18, 2007, with additional information submitted on October
2, 2007. Further review of that information has determined that the following Information is
needed to continue the stormwater review;
1. Submit two copies of the wetlands map dellneatod by the USACE. Each permit requested
requires copies of the delineation within five years.
2. Resize the pond based on average pond depth. As proposed, the use of the maximum pond
depth results in a pond surface area sized almost two times too small. The pond surface
area is a significant design criteria to provide storm water treatment. There is sufficient land
on the proposed property for a larger surface area pond since the remainder of the property
Is unsuitable for development due to topography; as the engineer, David Newsom, mentions
In his memo dated September 28, 2007, Item 13. Use the average pond depth to determine
the SAIDA ratio in accordance with the April INN BMP sections 1.3.1 and 1.4. The
proposed pond has only 30 foot of its 80 foot under the temporary pool at the maximum
depth of 7 feet, yet 7 feet was used in the calculations for sizing the pond. More than half of
the pond area Is much less then 7 foot deep at approximately 4 foot. Submit the
calculations, supplement and plans to report the pond surface area sizing based on the
average depth. Although specific dimensions for the pond were not provided, the average
depth appears to he approximately 4 feet. 115A NCAC 21-1.1008 (e)(3)].
Please note that this request for additional information is in response to preliminaryreviews.
The requested information should be received by this Office prior to November 26, 2007, or the
application will be returned as Incomplete. The return of a project will necessitate resubmittal of all
required items, Including the application fee.
If you need additional time to submit the Information, please mail or fax your request for a
time extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the dam by which you expect to submit the required Information.
The construction of any impervious surfaces, other then a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to
enforcement action pursuant to NCGS 143-218.6A.
Nw1h Q=Km DMdon orWow gadity Ifi17Mnti Snv!mcodu Rdd&1R'.37600.1417 Nww(019)733.7016 QmlanM Shmw
Jwft !!>0L11WAW—WiW— Ie 01 n1 612N.9dhhWSt. RddW4 NC 27604 Boa (011)T,12.2496 1-177423.6741
AOETA Oppolb*#AmnrvaAabnP3lpbpar—m%p**Tbdlo%Pa MMWPapa

P. 01
TRANSACTION REPORT
OCT-22-2007 MON 09:41 AM
FOR: NCDENR 9103502004
:K
SEND
DATE START RECEIVER....,%v TX TIME PAGES TYPE NOTE M# DP �c
OCT-22 09:41 AM 919103250060 35" 2 FAX TX OK 949
TOTAL
35S PAGES:
Mad" F. Way, Covemor
WUHmn C. Reee Ir., so mly
Nmfh Cvdim Dapemnem of Rnl lmem nt and Nrtunl Remorse
Coloho N. Su HO% Dlmdor
D1v6kn Pf WidvrQudhy
October 20, 2007
Franklin Jerome Coker, Manager
Cape Fear Precast, LLC
P.O. Box 10369
8250 River Road
Southport, NC 28461
Bul4nrt:: Request for Additional Information
Stomrwater Project No. SW8 070633
Cape Fear Precast, LLC in Burton Industrial Park
Onslow, County
Dear Mr. Coker:
The Wilmington Regional Office received a Stormwater Management Permit Application
for Cape Fear Precast, LLC on June 13, 2007, with additional Information submitted on October
2, 2007. Further review of that information has determined that the following information Is
needed to continue the atormwater review:
1. Submit two copies of the wetlands map delineated by the U5ACE. Each permit requested
requires copies of the delineation within five years.
Resize the pond based on average pond depth. As proposed, the use of the maximum pond
depth results in a pond surface area sized almost two times too small. The pond surface
area Is a significant design criteria to provide storm water heal..ant-There is sufficient land
on the proposed property for a larger surface area pond since the remainder of the property
is unsuitable for development due to topography; as the engineer, David Newsom, mentions
in his memo dated September 28, 2007, item 13. Use the average pond depth to determine
the SAIDA ratio in accordance with the April 1999 BMP sections 1.3.1 and 1.4. The
proposed pond has only 30 foot of its 80 foot under the temporary pool at the maximum
depth of 7 feet, yet 7 feet was used in the calculations for sizing the pond. Mora than half of
the pond area Is much leas then 7 foot deep at approximately 4 foot. Submit the
calculations, supplement and plans to report the pond surface area sizing based on the
average depth. Although specific dimensions for the pond were not provided, the average
depth appears to be approximately 4 feet.116A NCAC 2H.1008 (e)(3)].
Please note that this request for additional information is in response to preliminary reviews.
The requested Information should be received by this Office prior to November 25, 2007, or the
application will be returned as incomplete_ The return of a project will necessitate resubmittal of all
required items, Including the application fee.
If you need additional time to submit the Information, please mail or fax your request tar a
time extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the date by which you expect to submit the required Information.
The construction of any Impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to
enforcement action pursuant to NCGS 143-21 S.BA.
two.
Nash Coalnm D:+ism, afWalr Q,oRly 1fi175WI Ban,iea Costar Rddsh,NC 2760D-1617 Phone O1vJ 73.'IA015 CurWmar5etv7m
1nkmd; caw• du mmfit— L*mQ - 512 N. Sdi111nty 5t R&W.NC 2M4 Fa (919) US-2496 1AM-4224748
An ftW ORMHOlgffielM11-Aft ftq ff—S%Pael OIL NO OeMurou Paper

JOHN L. PIERCE & ASSOCIATES, P.A.
LAND SURVEYING — LAND PLANNING — MAPPING
P.O. BOX 1685
JACKSONVH-LE, NC 28541
OFFICE: [phone] FAX: [phone]
E-MAIL: [e-mail]
Orbriani@ilt)nc.com
TO: Ms. Mary Jean Naugle
N.C. Department of Environment and Natural
Resources — Department of Stormwater
127 Cardinal Drive Extension
Wilmington, NC 28405
Letter of Transmittal
DATE:
October 1, 2007
ATTENTION:
Mary Jean Naugle
Re:
Cape Fear Precast-Stormwater Project No. SW8 070633
COPIES
DATE
NUMBER
DESCRIPTION
2
Sets of revised plans
2
Revised copies of "Wet Detention Basin Supplement"
(Sheets 1 & 3 of 4)
2
Sets of revised calculations
1
Letter from Engineer (Dave Newsom)
1
Revised "Drainage Area Supplement Map"
OCT 0
REMARKS:

Design Calculations
Stormwater Treatment Facilities
for
Cape Fear Precast
located in
Onslow Industrial Park
1. PROJECT DESCRIPTION
The Project consists of an industrial precast concrete production facility on a 21.7 acre tract and associated sitework.
2. COMPUTE POND AREA REQUIRED
a. Compute Percent Impervious:
Impervious Areas:
On -Site Buildings
On -Site Streets
On -Site Parking
On -Site Sidewalks
Other on -site
Off -site
Sub -Total
FUTURE(reserved)
Total
Total Area Drainage to Pond:
Percent Impervious =
b. Compute Pond Surface Area
0 314,236
Total
0 SF
0 SF
0 SF
0 SF
314,236
0
314,236 SF
,J OmR n: 100,000 SF
0 414,236 414,236 SF
0.673 or 67.3 %
SF
..........::x:::,: ,.
Using Surface Area to Drainage Area Ratio Chart for 90% TSS Removal (copy attached) and ,
assuming tFJfoot pond depth: jt � o � e'/i_
� ,k\fi: -M sir
SA/DA = <>s% (interpolated) 1
Therefore:
Surface Area = SA/DA x Drainage Area
= 17,019 SF say
OCT 0 2 2007

c. Compute Minimum Pond Dimensions
Assume rectangular shape with 3:1 Length (L) to Width (WI Ratio:
Length = 230.07 feet
Width = 76.69 feet
Site conditions, however, dictate irregular shaped pond:
Hydr. Length = ,<fi Meet
so, Hydr. Width 68.0 feet (avg)
Actual L/W = 3.9 (irregular shape)
3. DETERMINE VOLUME TO BE CONTROLLED FROM 1" STORM
Using Schuler "Simple Method":
Rv = 0.05 + 0.009(I) where I = percent impervious
Rv = 0.656 in/in
Control Volume = Design Rainfall x Rv x Drainage Area
Control Volume = 33,632 CF
4. DETERMINE REQUIRED STORAGE DEPTH
Assume: 3:1 side slopes
solving for depth (d) by trial & error:
d = 1.7
5. DETERMINE ORIFICE SIZE
say .;..: ' . CF
Control Volume must be drawn down over a 2 day - 5 day period.
Using orifice equation, solve for Diameter (D) that results in 3-1/2 day period:
D = (Q / 0.026 (h)•51-e
Where: Q = (Control Volume / 3.5 days x 86,400 sec/day)
= 0.111 cfs
h= d / 2
= 0.85
-74we

Solving for D:
D = 2.16 Use.-:..,. '" pipe
Actual Drawdown with actual drawdown pipe diameter (using orifice equation):
Q= 0.090 cfs
Draw Down Period = 4.07 days OK, < 5.0
6. SELECT OUTLET STRUCTURE DIAMETER
Size outlet structure such that depth of Q10 flow <1.0 feet:
Using Rational Formula (Q=CIA) where:
Cimper
Cpery=.......,.,...
Ccum =
- 0.67-
110=yin/hr
A =
14.13 ac
Q 10 = 67.99 cfs
Assuming 1/2 circumference is used as weir and using
Francis Formula (Q=3.33LH1'5) to solve for L such that H = 1.0:
L = 20.42 Feet
Min 60 inch diameter outlet structure
Use 60 inch diameter outlet structure
7- DETERMINE 010 STAGE
Q 10 = 67.99 cfs
Using Francis Formula (Q-3.33LH1'5) solve for H:
H 10 = 1.89 feet
8. DETERMINE Q100 STAGE (ELEV. OF EMERGENCY SPILLWAY)
Using Rational Formula (Q=CIA) where:
Ccum = 0.67
I100 ...
..........................
........................
= _,.;,,..; in/hr
Q100 = 80.60
Using Francis Formula (Q=3.33LH"5) solve for H:
R. C F'17'" ?
a � ® 2 2007

H 100 = 2.12 feet
9. DETERMINE Q100 STAGE OVER EMERGENCY SPILLWAY (TOP BERM ELEV.)
Assume primary spillway blocked (i.e., emergency spillway to accommodate Q100)
Emergency spillway shall be a broad crested earthem weir designed to pass 100 year storm.
Using broad crested weir equation H = (Q/Cw x Lf /3
where: Q = Q100 80.60 cfs
Cw = 3.0
Length = x>==# feet
H = 0.60 feet
10. FOREBAY SIZING
Compute Actual Pond Volumes (using average end method):
Avg
Incr.
Incr.
Cum.
Main Bay Volume:
Elevation Area (SQArea
(SE)
Depth FT
Vol (CF)
VolCF
Pond Bottom
Bottom Veg Shelf
:.;:.;�``:.:"
7,224
5.33
38,504
38,504
Normal Pond
..,...............................................:::����11,7311.67
19,591
58,095
Main Bay Volume =
58,095 CF
Forebay Volume:
Elevation Area SF
A
Depth FT
Vol
Vol C
Pond Bottom
27.00
Normal Pond
?0
2,133
7.00
14,931
14,931
Forebay Volume =
14,931 CF
Total Pond Volume =
73,026 CF
Forebay Volume equates to
20.4 % of Total Volume
Temp. Storage Volume :
Elevation Area SF
Area (SF)
Depth FT
Vol (CF)
Vol CF
Normal Pond
34.00 17,644
Temp. Pond Level
p
:;:<>'..`':.Q
:::.....:....
19 259
1.75
33 702
33,702
Temp. Pool Volume =
33,702 CF
10 Yr Storage Volume:
Elevation Area SFArea
(SF
Depth FT
Vol CF
VolCF
Temp Pond Level
35.75 20,873
Temp. Pond Level
>-€ €: ° :>;;;? �
22 709
1.89
42,933
42,933
::...........::..:::...:.:..:.,.::...::.::......... ... :..:
���y^� •gyp--��y*�/7 -{�''�` +tee
1 `JL� � d .All Y .►-�" �f
OCT
0 2 2007

Temp. Pool Volume =
42,933 CF
100 Yr Storage Volume : Elevation Area ( Area SF Depth (FT) Vol CFVol CF`
Temp Pond Level 35.75 20,873
Temp. Pond Level <:fl s 22 939 2.12 48 577
48,577
Temp. Pool Volume = 48,577 CF
11. SUMMARY
Pond Elevations:
Top Berm (minimum)
H= 0.66
100-Yr. Flood
H100 = 2.12
10-Yr. Flood
H10 = 1.89
1-inch Storage
storage depth = 1.75
Permanent Pool
pond depth = 7
Pond Bottom
12. WET DETENTION BASIN SUPPLEMENT
Basin Bottom Elevation
27.00
Perm. Pool Elevation
34.00
Temp. Pool Elevation
35.75
Perm Pool Surface Area
17,644 SF
Drainage Area
14.13 AC
Impervious Area
9.51 AC
Perm. Pool Volume
73,026 CF
Temp Pool Volume
33,702 CF
Forebay Volume
14,931 CF
SA/DA
2.7654
Diameter of Orifice
2.00
Design Rainfall
1"
Relative
Actual
11.53
38.63
10.87
37.87 (emerg. weir elev)
10.64
37.64
8.76
35.75 (primary weir elev)
7.00
34.00 (invert out elev)
0 `:.........``
0 C T 0 2 2007

Design TSS Removal 90%
OCT 0 � 2007

Crystal Coast Engineering, PA
3817-3 Freedom Way
Hubert, N.C. 28539
Tel: [phone] Fax [phone]
Email: [e-mail]
September 28, 2007
Ms. Mary Jean Naugle
N.C. Division of Water Quality
127 Cardinal Drive Extension
Wilmington, N.C. 28405
Re: Stormwater Project No. SW8 070633
Cape Fear Precast, LLC in Burton Industrial Park
Onslow County
Dear Ms. Naugle,
We are in receipt of vour Reauest for Additional Information dated August 28. 2007 for the
referenced project. We provide the following information to allow you to continue the
stormwater review (item numbers correspond to your original email):
Wetlands were delineated and approved by the Corps of Engineer's when the park was
originally designed. It is the same delineation which was accepted by your office when
that project (Burton Industrial Park) was permitted. The delineation shown on the
drawing is per that original design.
Existing topography in the vicinity of the proposed pond is highly variable making it
extremely difficult to precisely quantify the depth to SHWT_ However, according to Mr.
Haywood Pittman, Licensed Soil Scientist, the elevation of the seasonal high water
table is approximately Elev. 34.0. We have redesigned the pond, setting the proposed
normal pond elevation equal to the SHWT as established by Mr. Pittman.
„ 3°
The property on which the pond is proposed is owned and controlled by the permittee
so it would appear an easement is unnecessary. Per your request, however, we have
added an easement to the drawings.
cS1
See comment 2 above. We have redesigned the pond, setting the proposed normal
pond elevation equal to the SHWT
0j
Proposed swale is not a "treatment swale" but a "conveyance swale". It is my
understanding that 1' separation is not required for "conveyance swales". F (-I-L V f
6.
A Drainage Area Supplement is attached for your use. 16, FatO w1 LL 'T
Pond provides average depth in excess of the 3' minimum required. The pond has cNd4614?
I` �1
been designed exactly as countless other ponds that your office has permitted under
el
the 1999 BMP Manual. ?-e <,�-A. L- % IK) uN t;k, t-71 "4 u L-, C cc-t:;oGsu Q icAc tr j4 cAq
Preformed Scour Pad added to the drawing. Existing topography at the proposed
discharge location will naturally "spread" the flow.
9. Added dimensions as requested. 9 E` f 4'
MfAdded dimensions as requested.
11. Prefer to leave the detail as is. Use of 4" square openings, as suggested, has recently
caused a failure of a pond embankment due to increased clogging potentialF-,C�..
12. All flow from roofs will be collected by perimeter swales.
OCT 0 2, Ml
BY:

• Page 2
September 28, 2007
13. As the site is owned by the permittee (this is not a subdivision) it would appear that
Deed Restrictions are unnecessary. The remainder of the property is unsuitable for
development due to topography. If, however, the permittee does, in the future, intend to
expand the facility, he understands a permit modification is required.
We are hopeful that this response addresses all concerns and that the permit can be issued in
the near future. Should you have questions or additional concerns, please feel free to contact
me.
Vavid K Newsom, PE "
CRYSTAL COAST ENGINEERING
9CT 0 2 2,007

Pr 01
TRANSACTION REPORT
�c
AUG-30-2007
THU 08:2.6 AM
FOR: NCDENR
9103502004
SEND
:K
DATE START RECEIVER
TX TIME PAGES TYPE
NOTE
M# DP :K
:K
AUG-30 08:25 AM 94544241
34" 3 FAX TX
OK
482
W
y
m
TOTAL :
34S PAGES:
3
of warF9
r
Q R
Y
010.7M7303
N6chad F. Way, Govemor
William G. RON Jr., Secretary
North C Irta Deparbnent of EnwlmnmNa and NakM Resources
Colson H. Bull: cumcw
Dlvlsion of Water tawy
Chuck Waidlll, Deputy Director
Division of Water 0wifty
_Stormwater
_
Express Per itting
71ar Mr. Jwwm Coker, Cape Fear pmcgst Fraea M. J. Naugle
Palo 8104a4-4241
Phoms 910-454.4240
99- NC DWQ SW8 070M
13 UMM x For Ravtaw
Dlbr 813p=7
cm
d Pkaaa I>+enat1100 13 Phreraa Reply O Plaaaa Ram
Mr. Coker.
Please find attached a request for addltlon information. This was malted on Tuesday to
you and e-mailed to the consultant.
Mary Jean
N. C. Division of water aualty 127 Cardinal Drive Extenalcn (910) 70672f 5 Cuetamer Servloe
NAtmirgbn Reglenal Dilke Yffift m, NC 28408 Colo) 350-20m Fax [phone]

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
Chuck Wakhil, Deputy Director
Division of Water Quality
910-796-7303
To: Mr. Jerome Coker, Cape Fear Precast From: M. J. Naugle
Fax: [phone] Pages: 1 of 3
Phone: [phone] Date: 8/30/2007
Re: NC DWQ SW8 070633 CC:
❑ Urgent x For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle
Mr. Coker;
Please find attached a request for addition information. This was mailed on Tuesday to
you and e-mailed to the consultant.
Mary Jean
v+v.
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone] Customer Service �$,-�
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax [phone] N(:L)Et,=t

P. 01
TRANSACTION REPORT :K
AUG-28-2007 TUE 04:15 PM
FOR: NCDENR 9103502004 :K
SEND �c
DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP
AUG-28 04:14 PM 919103250060 OaO50k 35" 2 FAX TX OK 473 �c
TOTAL : 35S PAGES:
�Of WAr�q Michael F.1309Y,Gnvar w
QG wlnheu a. flan Jr., secremY
W.,th Carolina DepWU-9Mfimimmu ettWei NeuniRaccurac5
t Cd m R. sullim, Dh=
Q `C Dividanofwwer Quality
August 28, 2007
Franklin Jerome Coker, Manager
Cape Fear Precast, LLC
P.O. Box 10369
8260 River Road
Southport, NC 28461
Subject: Request for Additional Informatlon
Skormwater Project No. SIWS 070633
Cape Fear Precast, LLC in Burton industrial Park
Onslow County
Dear Mr. Coker.
The Wilmington Reglonal Office received a Stormwater Management Permit Application
for Cape Fear Precast, LLC in Burton Industrial Parts on June 18, 2007. A preliminary review of
that information has determined that fhe application Is not complete. The following information is
needed to continue the stormwatef review:
1, provide a wetlands map for the site signed by a certified authority.
2. Report the seasonal high water table elevation on the pond section dertall and the
swale char.
3. Locate the pond / swales l piping in a recorded accessldrainage easement reported
on the plans. The pond outlet requires a recorded drainage easement
4. If the permanent pool Is below the SHWT then provide a liner for the pond. The liner
shall be constructed of a natural material at least one foot in thickness and having a
hydraulic conductivity of no greater than 1 x 10-6 centimeters per second when
compacted. The liner shall be at least one foot above the SHWT (18 24 Inches is
recommended) and shall have a minimum of 12 Inches soil on top to prompts
vegetation and to protect the liner.
5. Provide a minimum of one -foot separation between the bottom of the Swale and the
SHWT. (April 199g BMP section 6.6, page 68).
6. Delineate the drainage area for the pond. Provide an overall layout plan depicting
the entire property and the BUA on one plan. Report the north arrow on the layout
plan. Clarify why the drainage area is only 14 acne when the site area Is almost 22
acres.
7. Use average pond depth for purposes of sizing the pond. The average pond depth
should be used to deterillne the SAIDA ratio. The proposed pond has only 30 foot
of its 60 foot under the temporary pool at the maximum depth of 7 feet, yet 7 feet was
used In the calculations for sizing the pond. More than half of the pond area is much
less than 7 foot deep. Update the calculations, supplement and plans to reflect
sizing based on the average depth. Although specific dimensions for the pond were
not provided, the average depth appears toapproximatelybe 4 feet [April BMP
section 1.3.1 and 1.4,15A NCAC 2H.1008(a))]_
8. Provide level spreaders at storrlwater outlets to wetlands sized to ensuro diffuse and
non-emalve flow.
9. Provide details for the road&, parking, sidewalk, etc, including width, radii,
dimensions, and slopes.
10. Provide dimensions for the building.
11. Label the trash rack detall with a maximum of 44nch square openings. f w
lgotd,gmlmDlvllYaa eLwamCu•Ib' h17Cudind PAve t�tanelav xhlMnaren.*m '-eAM ft—CPtg7%&7215 CwMeeK ti A.
imannc 1 14ffiWll>;� AM a10P504M t-e77aM746
An EqualCppe,'IdbWma Admkftm-6D%tA*hod%cRFAILOMMWPaper

C•�OtrRQG Michael F. Easley, Governor
j nF William G. Ross Jr., Secretary
r North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
August 28, 2007
Franklin Jerome Coker, Manager
Cape Fear Precast, LLC
P.O. Box 10369
8250 River Road
Southport, NC 28461
Subject: Request for Additional Information
Stormwater Project No. SW8 070633
Cape Fear Precast, LLC in Burton Industrial Park
Onslow County
Dear Mr. Coker:
The Wilmington Regional Office received a Stormwater Management Permit Application
for Cape Fear Precast, LLC in Burton Industrial Park on June 18, 2007. A preliminary review of
that information has determined that the application is not complete. The following information is
needed to continue the stormwater review:p}n�,7
Neet)Col Provide a wetlands map for the site signed by a certified authority. n IY �'t i
2. Report the seasonal high water table elevation on the pond section detail and the
Swale chart.
3. Locate the pond / swales / piping in a recorded access/drainage easement reported
on the plans. The pond outlet requires a recorded drainage easement.
4. If the permanent pool is below the SHWT then provide a liner for the pond. The liner
shall be constructed of a natural material at least one foot in thickness and having a
hydraulic conductivity of no greater than 1 x 10-6 centimeters per second when
compacted. The liner shall be at least one foot above the SHWT (18 -24 inches is
recommended) and shall have a minimum of 12 inches soil on top to promote
vegetation and to protect the liner.
5. Provide a minimum of one -foot separation between the bottom of the swale and the
SHWT. (April 1999 BMP section 5.6, page 68).
6. Delineate the drainage area for the pond. Provide an overall layout plan depicting
the entire property and the BUA on one plan. Report the north arrow on the layout
plan. Clarify why the drainage area is only 14 acres when the site area is almost 22
acres.
7. Use average pond depth for purposes of sizing the pond. The average pond depth
should be used to determine the SA/DA ratio. The proposed pond has only 30 foot
of its 80 foot under the temporary pool at the maximum depth of 7 feet, yet 7 feet was
used in the calculations for sizing the pond. More than half of the pond area is much
less than 7 foot deep. Update the calculations, supplement and plans to reflect
sizing based on the average depth. Although specific dimensions for the pond were
not provided, the average depth appears to be approximately 4 feet. [April BMP
section 1.3.1 and 1.4, 15A NCAC 2H.1008(e)(3)j.
8. Provide level spreaders at stormwater outlets to wetlands sized to ensure diffuse and
non -erosive flow.
9. Provide details for the roads, parking, sidewalk, etc, including width, radii,
dimensions, and slopes.
10. Provide dimensions for the building.
11. Label the trash rack detail with a maximum of 4-inch square openings.
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone]
Internet: www.ncwaterquality.ore Fax [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper
Wc°ftn Carob�' ,a
Xadurally
Customer Service
1-877-623-6748

12. Show the roof drain collection lines on the plan layout. All roof drainage must be
directed to the pond.
13. Provide a copy of the proposed deed restrictions to include all required conditions
and limitations for the property. Clarify development plans for the other 7+ acres on
the site.
Please be advised that the development of the future areas of this property will require a
permit modification and the current stormwater rules will apply since the details for the built -upon
area and stormwater system was not proposed with this application.
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received in this Office prior to September 30, 2007, or the
application will be returned as incomplete. The return of a project will necessitate resubmittai of all
required items, including the application fee.
If you need additional time to submit the information, please mail, email or fax your request
for a time extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the date by which you expect to submit the required information. The Division
is allowed 90 days from the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to
enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. If you have any
questions concerning this matter please feel free to call me at [phone] or email me at
[e-mail].
�Sincerely,
M.J. augle
ENB/mjn: S:1WQSISTORMWATERIADDINFO120071070633 aug07
CC: David K. Newsom, PE Crystal Coast Engineering, PA 910-325-0006, [x0060 fax]
M.J. Naugle

JOHN L. PIERCE & ASSOCIATES, P.A.
LAND SURVEYING - LAND PLANNING - MAPPING
P.O. BOX 1685
JACKSONVILLE, NC 28541
OFFICE: [phone] FAX: [phone]
E-MAIL: [e-mail]
Or [e-mail]
1N Z�
rJUN 8 2,0�7
Letter of Transminal
DATE:
June 15, 2007
TO: Ms. Rhonda Hall ATTENTION:
N.C. Department of Environment and Natural Rhonda Han
Re:
Resources — Department of Stormwater Cape Fear Precast LLC
127 Cardinal Drive Extension
Wilmington, NC 28405
COPIES DATE NUMBER DESCRIPTION
2 1 Sets of plans
2 1 1 Stormwater applications with calculations
1 Check in the amount of $420.00
REMARKS:

Stormwater Treatment/Erosion Control
Narrative
Cape Fear Precast, LLC — Burton Industrial Park
Cape Fear Precast, LLC proposes to construct a precast concrete production facility and
associated sitework on a 21.69 acre tract located on Mildred Thomas Court in Onslow
County's Burton Industrial Site. The site is currently vacant and wooded. The project site
is tributary to an un-named tributary of New River.
The proposed development activities are high density (BUA=43.8%), therefore, stormwater
treatment facilities are required. Because the site is located adjacent to class SC waters, a
wet detention pond, designed for 90% TSS removal, is proposed to meet the DWQ
requirements for stormwater treatment.
All stormwater emanating from impervious surfaces that is generated on -site shall be
collected and directed to the rear of the site via perimeter swales and storm drainage piping.
The treatment system will require periodic maintenance. Maintenance frequency shall be
dictated by depth of sediment in the basins. Sediment depths shall be checked by the
owner on a periodic basis.
Existing soils on site are sandy loams underlain by denser and less pervious strata at
greater depths.
It is proposed to utilize the storage basin for sediment storage during construction. Upon
stabilizing the site, the contractor will be required to remove accumulated sediments and
restore the basin to the design elevations.
RECRT
$Y:

S LIC CALLS Fat FLOW AK NE
ANFam or IME *A SWINTMOM
OF MMUTOW AS) 4 HUSBAND no
F
yhrl�L "LLWAMMMMM AWW ha P. MY
IL
O.L P
0
.A s� [ i �6& HINEVOWN RD an wrw/r m �+
AIR E +
i
wr A
am
aee
N�p
wrrLk4m MAP
5tlomw PROPERTY or
�l51OW
COUNTY INDUSTRIAL PARK
i� '•'�'
�1A 130NtilRtETQWN9MtP CULDW 000FRY NORTM CARDONA
AQ
E[R 12. 1999, RlV19CD APR114, F006
RBhfll•1� OOMMK
SIMMIM - RAW" - WAPMMO
230 NEW BADGE 57RW
4OMW(BLO)^�
om
:. wsm�nlow or.re IMArLee
Ay11RLTI JCw : B ==&=LW pt7vep
+prmr+t 7p a eolem Lw E
a Pew PNXMN m a "Cm
a oAn w Wo w
4� m�aa� wale xAinw tearAwca
0. O�aO�MImMYC11 rAFSw �1 ;
BMW mmwom
IAWQ
O .sulloNlrug ,
. . raw ON amc
aeraw elm SOK
Or "Ot
Fl MMw.� + eMem
W RA,D!OM
AID
A
1 Udb

TRACT DATA N/F r WELLS
EVELYN L MOORE N.C.S.R
WF & HUSBAND KIP 'THUS QRTIFIPS THAT THIS COPY OF THIS FIAT ACCURRATIPY DEPICTS THE BOUNDARY OF
TOTAL AREA: ±722.80 ACRES () 0-26-99) SANDRA M. AMR[TT ERNEST MOORE J.S. MINES THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER AM AS DETERMINED 15YTHE Z G
e HUSBAND D.B. IG F at'° UNDBL9IGNED ON THIS DATE. UNLESS THERE 15 A CHANGE IN THE LAW OR OUR PUBLISHED
WILLOUGHBY LLOYD A,°4RITT D.B. 957, P. 587 n TOTAL UPLAND AREA : ±606.44 ACRES (I O-Z6-99) REGUlAT10N5, THIS DETERMINATION Or SECTION 404 JURISgCTION MAY BC RP11ED UPON
FORA PERIOD NOT TO EXCEED FIVE YEARS FROM THIS DATE. THIS DETERMINATION WAS tL TOTAL WETLAND AREA : I I G.36 ACRE5 (I 0-26-99) 0.8 MADE UTILIZING THE 1987 CORES OE ENGINEERS WETLANDS DELINEATION MANUAL'. 3t
TOTAL IMPACTED WETLAND AREA: 0.51 ACRES ( 11- I G-05)
+ D.BuONEL WHITN f REGULATORY OFFICAL : Ns REMAINING WETLAND AREA ; 1 15.54 ACRES (I 1-1 G-O5)a0 . 1248, P. G6k mlLc
,
�\\N �. \'' , -�'^} � " � IN G S• �i' f•. OLD BRYANT RD. 1/ i (�� DATE PONY FARM ROW
N/F LEO H. WILHITE `-"tj� WT USAGE ACTION ID : N.CS.R. 1212
D.B. 919 P. 251 F ' '1 ., ,!-' J.S. MINES
J.B. 176, P. qD3
)t,) BLUE CREEK ROAD_--
�_.!' N.C.S.R 1213
,_ i\ \ . %• 53,556 S.F. ���% l• , '' /7 /
1.23ACI3E5� VICINITY SKETCH (NO SCALE)
t 21. 0 ACRES � � \\\ �w � �— TOPOGRAPHICAL SURVEY �
Cv 10 r }�� / 404 WEllAND5 SURVEY MAP UPDATE (JANUARY 27, 2000)
HAYES C. JARMAN, JR. I(' ,II ,�I•�)1\� `\ L- �/ / �..:::.. SHOWING PROPERTY OF
&WIFE N,�✓. -,, �/'-� \ \ bJ ! /lI / �....
GARB, 60 D. JARMAN- // BURTON INDUSTRIAL PARK
% \ yQ •: / �`" JACK50NVILLE TOWNSHIP ONSLOW COUNTY NORTH CAROLINA
D.B. 6D4, P. 815 ,) ( I ... , /• \ � u
LEGEND
= Ib / I n
, U OCTOBER 2 1999 REVI5ED DATE: JUNE10, 2003
404 WETLANDS REVI5ED DATE: JANUARY 27, 2000
i
® = IMPACTED AREA OF 404 WETLANDS
AREA
"A' LINE
TABLE
LINE
I LENGTH
I BEARING
AI
8.5a
1 53~42w
1167]-A257.0
527Id56W
LI676. A8
5.20
N
11GM-M
50.74
954.30'27W
LI6 4-
33.G5
LIG73-A6
n.n
5311114'2GIN
LI67a - A7
187
518.9
M
13.28
5 Id46W
A9
51496°
AIO
38.11
43'S I.E
N2 I.E.L1709-All
34. .70
N88°21'49R
I 2
4GA6
LI7°!-AI
15.91
NSGtldI]S
ll]06-A14
89.
N2 2 R
AIM
15,44
N8C8BZGE
A1.1
5w
xacl Bw
AREA 'B• LINE
TABIP
LINE
I LENGTH
I BLARING
1111
45.78
N 54 Sd2 R
.1
20—
N55•IIT
LI476 � f>9
10.72
50G•1n3915
u477 - ea
25.e7
a'e
L
s.sD
wos•se4oe
77O-Os
LI - Oa
30.98
1159'2
LI450-58
SBGN)TI2S
BD
11.88
N]0• 1'C
59
14.09
504°35-I2W
CIO
7A4
5a9ros41w
LI24O-BI I
81.95
7 w
L1241 -5I2
IA15
$/OV09
I -BI3
22.53
549•IIVOW
LI24a - 514
29.21
5B39d31 W
LI 244 - 1115
aI.e2
s w
LI245-51G
48.10
S58•1005w
BI7
G.25
565.04WV
DID
NI594'03R
f I
I- _
1 �39 N�EWrBR BRIDGE STRE�
1 1 J u J CKSONVILLE, NC 28540
ReAa F^, A"D !•' � / �, �/ ,\ '� \` �' I \ (1310) 455-38199
NNYBASDEN {. \'?\ — +it+ (V, lI �. '.:'..... J _!} i'.
WANDABASDEN /... l'_;.`✓ 11_pLee+—En91, `�.1
1 M.B.30 PG.075 \� E- 1NB C - I '1� i ,
/, to I
r
D.B.1570, PG.722 �I i i l _ J is s �; ~I /
, ' r • ..
1 ONSLOW COUNTY
S.
�
IJ)
V _
�1 ,
D.B.1662 PG.6 7 /m
i
1 /
f I
1
1 —
,'II,
lN 'F,-4e• -
% 0 ^ % /�� i
�1 1 � 1
r - I
1 /
{
/
c6x mere
I
1
I
2
I
'
i"
_
�-} • :`�
_„"
I N
•o5, — :.4A ..
NORTHUYES U
' P Q A R BLU,0 ; 9* wm_ It
' ♦1 1 s /}�/ ��—'-------- ��-}-------------
ARE IBP . I aIwDName R
ONSLOW COUNTY 32LFO� TEO�/ PIPE 15104
DB 1817•PG.804 DIm lls; i I{�.}\ '.y`1� ! \ J '�' �`✓^'L/ l I� ,�!. l� �/ � ��,!, ✓ 1 �` ^I .` -�1 j1 �I rL,,N f \ \�• .., .. ... 4,• `�b -.dV
1`+ '
1
�
AREA
•O. LINE TABLE
LINE
I LENGTH
I BEARING
DI
37.52
NWI.I
02
25.11
NO3.35'39w
3.02
5SIIF 53R
L956 - 14
22.
s I6Md50R
L955 - D5
41.a I
N73.28'299!
-OG
52.%
N71'4NPRR
w58-D]
53.M
N50`I74d5
DB
14.66
55T46'
D9
211.
5R
LI n2DLO
49.72 72
Na IIIw
LInI I791-DIN
Tl]
9 d
LI790-D19
SLIX
543°8 '1
LI 59-DI3
38.29
514%4
LI78B-01
55 6
015
2b 1.81
N
�I �u a 7 Wi LAilT. ROUSE,JR. _ J -I If 1 f I 4 `/ a' h„1JJ �dGf'b� k y
°- �erWXVQP.RGUFo ' .JJ / Q. P', -`N 'r"-:g' j. `�,y 1 �y_ J -✓ I
D.B. 650, P. 830 f� / J ', '' _ A + { _3 \\� �\v,,
TIMBER HARVEs:ER, INC N F ROUSE N/F iL -_[r •`k /. �r-'t f� \\\''I •'•'>'- ,,.
/ G D.B. 603, P. B98 ( / .M1y,�-j
,. D.B. 802, P. 659 \CATOR N. IARMAN ` / .I`+ JOHN D. HEATH ,� f / _ P .I r �. 1 r ,, 1
`` _ &WIFE •`R "1 111 5. ........ wo-
•t MARGARET L HELEN F. HEATH�+.1 ( { ! \ ,Ek�C7+F f L}A (�
D.B. 604, P. 887 \ �I`I Zo N D.B. 1193, P 674 , ii / j -, i [ 1 `! t� I 1 it �ij \ \ % 1 .•:.: :.•.:. !
D.B. 1076, 5%
THIS MAP REPRESENTS THE UPDATE OF THE 404 WETLANDS MAP ORIGINAL. DATE _ I ° I 1 �J• r"' _ �� J ;}'' !�
10.1259, AND CERTIFIED BY MICKEY 9UGG5, UNITED STATES CORP. OF ENGINEERS OLD TAR 10-2659 AND SHOWS THE CURRENT IMPACT AREAS OF TH15 DATE NOV. 15, 2005. \� LANDING RD.
THIS CERTIFICATION 19 FOR THE SURVEY AND MAP OF AREA 'A", 'B', AND 1D° �IF GUM B
1, / i
•'r
DARDEN LANIER, P.L.S. L-1223
�O.I9C,H vJL`�6 Z.A. IiURGANUSHEIRS 1. ,..`-,� 4 'I I/ �' r ,/i / �.a ;,30 F J�.
V gye`�3A� M.
21, P. 22 N/F I/ `J� ~ GURGANUS HEIRS
GgA�HIC SCALE
SLIDE B-50 DENNIS E. THURMAN, SR. ,}�. \ t \
\ / 1 �-+� M.B. 21, P. 22 /
Y` � 14' DIRT ROAD 3 vaEE '/! f 14 ^ A
oe 60i P.4453N ��13iI \GURGANUS.IIEIRs `�. —��29 i 1
I I M.B. 21, P: 2 r 1' // • 1 fte . am K