20060658 Ver 3_More Info Received_20070904

•
~ • Soil & Environmental Consultants, PA
11010 Raven Ridge Road Raleigh, North Carolina 27614 Phone: [phone] Fax: [phone]
www.SandEC.com
September 4, 2007
S&EC Project #8977.W3
DWQ Project #06-0658v3
Department of Environment and Natural Resources
Division of Water Quality
Attn: Cyndi Karoly/Lia Myott 0 ~ ~ ~ ~n n~ D
2321 Crabtree Boulevard, Suite 250 ~,~!,/
Raleigh, NC 27604
Re: Reply to the Division of Water Quality's Request for More Information S E P ~ - 20~ 1
Hidden Lake-EXPRESS REVIEW PROGRAM UENR - WA7~k tiu~u"i`•~
Franklin County, NC 1NEI~UWD$ANDSTOli.A~NATEFl9RANCH
To Whom It May Concern:
The purpose of this letter is to respond to your Request for More Information letter dated August 30, 2007.
The original questions/requests are copied below as they appear within letter and are then followed by our
response.
Additional Information Requested:
Grasspave: Please provide a signed and notarized Operations and Maintenance Agreement for your
proposed grasspave system.
A signed and notarized Operations and Maintenance Agreement is attached for your tiles.
2. Riparian Buffer Impacts: Please add the proposed 3-foot mulch path as pervious riparian buffer ipact
to the individual lot pier impact totals.
The table included within the application submitted August 28, 2007 included the pervious riparian
buffer impacts associated with the proposed 3-mulch path. The column identiffed as "Pervious
Zone 1 Area (s>)" with each lot quantifying 75 ftz is the area of impacts proposed for the mulch
paths. For further clarification, a revised table has been included along with a sketch drawing
provided by the applicant.
We anticipate that this answers all of the DWQ's questions in order to complete the final review process
for a Modification of a Riparian Buffer Authorization. If you have any further questions or any additional
explanation is needed, please don't hesitate to call.
Sincerely,
Deb ie Edwards
Environmental Specialist
CC:
Mr. Paul G. Garrett-Crescent Resources, LLC, 11104 Limehurst Place, Charlotte, NC 28278
Attachments:
1) Hidden Lake Boat Ramp signed/notarized O&M Agreement
2) Proposed Buffer Impacts for Individual Lot Piers Table
3) Hidden Lake Typical Lot Pier Buffer Impacts hand sketch
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455
Phone: [phone]
Fax: [phone]

Hidden Lake Boat Ramp
GrasspaveZ Porous pavement System Operation and Maintenance Agreement (8!2007)
Grasspave2 is a flexible porous pavement system that will accommodate light vehicle tire traffic while allowing
rainwater to infiltrate into the gcound. Grasspave2 consists of a series of plastic cylinders attached to a
flexible grid system. The cylinders are filled with sandy gravel base course with a top layer of grass sod to
crew#e an attractive, natural surface that blends with the open pasture feel of the area.
The Boat ramp is not designed for frequent use. It is expected that infrequent use combined with low vehicle
tire loads and speeds will ensure proper infiltration and aesthetic qualities of this system.
Name of Project: ~ rya~ r~ ~„~t 1<~
Address: ~G~~ ltrt~,~~,.~ ~.c,<r- ~r~rtlG YDEl~~;~~~ lt~~; X75 f,~;
s
Maintenance activities shall be performed as follows:
MAINTENANCE ACTIVITY t=REQUENCY
Post-construction monitoring-inspect for vegeta#ion, Check after every heavy rainfall €or first 6 months
se#tlin ,erosion, or concentrated flaw. followin construction.
Inspect the Riparian Buffer in the boat ramp area and Once a month and after heavy rainfalls/s#orms #hat
make repairs as needed. Look for: exceed'/a -inch.
• Damaged #urf reinforcement and dead or
dying turf in the Grasspave2 system.
• Erosion within the buffer.
• Concentrated flows -look for gullies or
sediment #lows.
Mow grass to a 4" to 6" height ONLY within the As needed during growing season.
Grasspave2 ramp areas. Buffer areas adjacent to the
ramp sha11 not be mowed.
Remove any weeds/shrubs growing within the Once a year.
Grasspave2 ramp area. Vegetation adjacent to the
ram shall not be removed.

I acknowledge and agree by my signature below that I am responsible for the pertormance 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 ar responsible party.
~
Print nam
: C~~ C ~c= TT-" ffr~~ nt~ ~x~ ~ j2E5[. ~~i;° ,. ~_~ ~'
e
~
Title: ~%~/at3/~ c~+/h~%/I F~c'~" ,~~rJ~1~Ptit~'n~i ~
c~ j~{i~ C-~14r~/~~~f.~J~
Address: ~~f S© Ir~LLS ~~F //
NG~-~5~. ~..r~~t~ fit;: ~~ %£)z' /~tc~rC;,r- N~ 21~1.~
Pho
Sigr
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident of the subdivision has been named the president.
1, CJ ~ n ~ ~r { ~. /-~e o. r n , a Notary Public for the State of ~~ ~-th ~ a r~ / ~ n c~~
County of ~,(~ ~ /~ e.. , do hereby certify that fem. ~ }'e ~° Cc~~,,~~ 7fi
personally appeared before me this ~ f day of .~u cs u ,~ ~~- , ~ ~ v ~ ,and acknowledge the due
execution of the forgoing porous pavement system maintenance requirements. Witness my hand and official
seal,
~~Y:.~
Jennffer C. Hearn
Notary Public
Wake County
North Carolina
My Commission Expires 9/28/2011
SEAL
My CommISSIOn eXpireS ~ /"~- `~/~U / ~

Proposed Buffer Impacts for Individual Lot Piers
Hidden Lake Subdivision
Franklin County, NC
Tar-Pamlico River Basin

Lot # Impervious Zone 1
(pier connecction to
snore Area sf
Impervious Zone 2
Area sf Pervious Zone 1
(3-foot mulch path)
Area sf Pervious Zone 2
(3-foot mulch path)
Area sf
16 15 0 75 60
17 15, 0 75 60
18 15 0 75 60
19 15 _ 0 75 ___ 60
20 15 0 75 60
30 15 0 75 _60
31 15 0 75 60
32 15 0 75 60
33 15 0 75 60
34 15 0 75 60
35 15, 0 75 60
38 15 0 75 60
39 15 0 75 60
40 15 0 75 60
41 15 0 75 _60
43 15 0 75 60
44 15 0 75 60
45 15 0 75 60
47 15 0 75 60
48 15 0 75 60
49 15 0 75 60
67 15 0 75 60
68 15 0 75 60
69 15 0 75 60
70 i5 0 75 60
71 15 0 75 60
72 15 0 75 60
73 15 0 75 60
74 15 0 75 60
75 15 0 75 60
76 15 0 75 60
79 15 0 75 60
82 15 0 75 60
83 15 0 75 60
84 15 0 75 60
12 15 0 75 60
85 15 0 75 60
86 15 0 75 60
87 15 0 75 60
88 15 0 75 60
89 15 0 75 60
90 15 0 75 60
91 15 0 75 60
92 15 0 75 60
Boat Ramp 36 0 324 240
Totals = 696 sf 0 sf 3624 sf 2880 sf
I oral gone ~ Impact = 4320 sf
Total Zone 2 Impact = 2880 sf
Total # of piers = 44 Typical Buffer Impact per pier = 150 sf
Total # Boat Ramps = 1 Boat ramp Buffer Impact = 600 sf
Notes:
1. (sf) =square feet
2. Zone 1 =Tar-Pamlico Buffer, 0 to 30 feet
3. Zone 2 =Tar-Pamlico Buffer, 30 to 50 feet
4. Pier dimensions shown on "Side-long Fixed Pier, Typical Plan & Details", Prepared by OPDA dated 11-28-05
5. Boat ramp will be 12-feet wide and constructed with pervious Grasspave2 or equivalent system.

_~~_
~~~~~~
\1
~1
~~