20140770 Ver 1_King ECP-Stormwater Detail revised 9 13 14_20140923

Strickland, Bev
From: Devane, Boyd
Sent: Wednesday, September 24, 2014 1:09 PM
To: Strickland, Bev
Subject: please file these. Beaverdam 14 -0770
Attachments: King ECP- Driveway Permit Detail sheet 2.pdf, King ECP- Driveway Permit.pdf; King
ECP -401 404 Permit revised 9 13 14.pdf, King ECP - Stormwater Detail revised 9 13
14.pdf
Please file the note below and file these four files. Thanks.
From: Wanda Austin [ mai Ito: wandajoyceaustin(d)amail.com]
Sent: Tuesday, September 23, 2014 9:47 PM
To: Devane, Boyd
Subject: Re: Can you send me an electronic version?
Good evening. I have attached the revised sheets. Let me know if you need any additional information.
Wanda Austin
On Tue, Sep 23, 2014 at 2:38 PM, Devane, Boyd <boyd.devanegncdenr.gov> wrote:
I
From: Wanda Austin [ mai Ito: wandajoyceaustin(d)amail.com]
Sent: Saturday, August 23, 2014 9:12 AM
To: Devane, Boyd; Adam King
Subject: Storm Water
Good morning. I have addressed the concerns that we discussed yesterday for the Beaverdam Road
project. The pdf version of the storm water 41 and permit drawing 41 are attached. The entire drainage area for
the phase 1 can be best viewed from the permit drawing. Phase 1 includes the buildings shown. The
supplemental flow directional arrows have been added along with more detail on the detention outlet pipe and
the by pass flow channel. Thank you for your review and let me know if you have any other questions.
Wanda Austin

GENERAL NOTES:
1, Utility services exist on site, The location of all surface and underground
utilities, right -of -ways, easements, etc,, shall be verified by the contractor,
The contractor shall be responsible for protecting all utilities from damage
during construction and to repair any damage which should occur to the
satisfaction of the owner and utility companies, Commencement of landscape
installation indicates acknowledgment of and acceptance by the contractor
of existing conditions,
2. Actual as -built and /or existing site conditions may vary from this plan,
3. Stormwater basin, level spreader and vegetated filter strip shall be included
in a recorded permanent drainage easement,
4. Protect existing grass areas, trees and other vegetation to remain,
5. Damage by contractor to undisturbed areas outside the limits of
construction shall be repaired by contractor to the satisfaction of the
owner,
6. Final acceptance: The owner's representative will provide the final
inspection after the contractor has satisfactory corrected the
deficiencies on the punch list should the inspection find work incomplete, the
contract shall remedy the deficiencies,
7. Remove erosion control items once vegetation is established,
8. Amend soil in vegetated filter strip according to table below,
9. Cover vegetated filter strip with 6 inches of top soil and sod with Blue
Grass or Tall Fescue,
10, Provide a sediment depth indicator in the dry detention basin,
11. Use 3000 psi concrete to construct the level spreader,
12. Verify 0% grade along the level spreader,
13. Caution should be taken to not damage level spreader when backfilling,
14. Construct overflow weir of Class B rip rap,
Start -up Fertilizer Application to the Engineered Filter
Strip Topsoil
(from NCSU Cooperative Extension Service 2008)
If Obtaining a Soil Test
Send approximately 1 cup of the air -dried soil
sample to the NCDA & CS Agronomic
Division Soil Testing Services, 1040 Mail
Service Center, Raleigh NC 27607, Boxes and
forms can be obtained at your county
Cooperative Extension center or at the
Agronomic Division office in Raleigh. Allow
several weeks for the results to be returned.
Apply the amount of lime and fertilizer
recommended for your soil by the soil testing
laboratory. For additional information about
interpreting a soil test, visit this Web site:
http:// www .ncagr.com /agronoml /uyrst.htm
If No Soil Test is Obtained
Apply the following for grasses other than
centipedel
•75 lbs of ground limestone per 1,000 sq ft,
•A starter type fertilizer (one that is high in
phosphorus) based on the type of grass and
the planting method, Fertilizer bags have a
three - number system indicating the primary
nutrients, such as 8 -8 -8 or 5- 10 -10, These
numbers denote the N -P -K ratio —the
percentage of each nutrient in a fertilizer, The
percentages are noted in the following order:
N Nitrogen for green color and growth,
P2 05 Phosphorus for good rooting,
K20 Potassium to enhance pest and
environmental stress tolerance.
Common examples of starter fertilizers required
for a 1,000 sq ft area include 40 lbs of 5- 10 -10, 20
lbs of 10- 20 -20, or 16 lbs of 18 -24 -6. For sandy
soils, typical to the Coastal Plain and SandhiRs,
fertilizer rates should be increased by 20 percent,
Note: For centipede grass, apply % lb of nitrogen per
1,000 square feet. Too much fertilizer
will kill centipede,
ELEV 2641 --�
BOTTOM ELEV 2637
SHWT ELEV 2630
30
FREEB ❑AD
rN
BASIN CROSS SECTI ❑N
/tT[1P,MWAT ER �
48" BARREL /\
T 1° IFI�/E AN /
R GUARD
/Y AI TENAA ESS
2i ej /
SG WE I
.� I L_ l� 1
C DITCH
CPDE
-� P
v ULV RT
VEGET ED LTE
\ STRIP LI]W �P S SDI H -o
El
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'3 x BE0 00
i
ST ❑R W ER I�
DRY D E T N B SIN —�
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C =0,32
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/ EXIS G
C❑NSTRUCTI ❑N SCHEDULE:
1, Stake limits of storm water basin,
2, Install temporary silt fence around the limits of the basin,
3, Install wattles at silt fence drainage outlets,
4, Grade basin to dimensions provided,
5. Construct outlet device,
6, Construct vegetative filter strip to grade indicated,
7, Construct level spreader,
8. Seed areas according to schedule,
9, Water Vegetated Filter Strip frequently for the first three weeks of sod
installation so that first 1,5 inches of soil is kept moist,
10. Once area is established, remove temporary silt fence,
MAINTENANCE SCHEDULE:
1, Inspect dry detention basin quarterly and within 24 hours after a storm
event greater than 1,0 inch,
2, Remove sediment, trash, debris and repair bare spots according to the
Operation and Maintenance Agreement,
3, Maintain a grass height of 3 to 6 inches in the filter strip,
LEVEE SPREADER
30-
6,6 ELEV 2643
— � 2
1 3�
VEGETATED FILTER STRIP
1 20 40 61 :1 100
STAGE STORAGE VOLUME CALCULATION TABLE
ELEVATION
SURFACE AREA
(SF)
INCREMENTAL
VOLUME (CF)
CUMULATIVE
VOLUME (CF)
LESS THAN 2637
OPERATING VOLUME
0
0
2637
960
0
0
2638
1920
1440
1440
2639
2880
2400
3840
2640
3,840
3360
7,200
2641
4,800
4320
11,520
OVER 2641
FREEBOARD
0
11,520
PP ❑PILE VIEW
CROSS SECTI ❑N
❑VERDE ❑W SEDIMENT DAM
L
ST❑RMWATER 1
8 -22 -14
MODIFY DETAIL
Elevations
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COUNTY: HAYW❑ ❑D
TOWNSHIP:
BEAVERDAM
WATERSHED:
FRENCH BROAD
SCALE:
1" = 20'