3.21.2017 Response and Maps

March 10, 2017
Mr. John L. Holley Jr., PE, CPESC
Acting Regional Engineer
NCDEQ Raleigh Regional Office
3800 Barrett Drive
Raleigh, NC 27609
Subject: Response to 01/18/2017 Notice of Deficiency (NOD)
Hanson Aggregates Southeast, LLC — Crabtree Quarry
NCDEQ LQS Mine Permit No. 92-03
Wake County, Neuse River Basin
Dear Mr. Holley:
■o■
one
IIIIIIIIIIIII■Hanson
NEWMBERGCEMENTGroup
Hanson Aggregates Southeast, LLC
South Region
North Carolina Territory OtFce
2101 Gateway Centre Blvd, Suite 100
Morrisville, NC 27560-9626
Tel [phone]
Fax [phone]
www._hanson com
We appreciate the time and effort your inspectors devoted toward resolving issues
stemming from a number of events leading to unplanned erosion. Hanson has reviewed the
findings with the environmental manager, project manager, the grading contractor, and
erosion control designer (Draper Associates) and developed a plan to come into
compliance. To date, all sediment traps, check dams and basins have been cleaned and
refurbished. The entire area has been re -graded and stabilized with seed and mulch; and
additional control measures installed. Below, we have addressed each condition listed in
the NOD as being violated.
A. Operation Condition No 3B (Buffer Zones): Sufficient buffer shall be maintained
between any affected land and any adjoining waterway or wetland to prevent
sedimentation of that waterway or wetland from erosion of the affected land and
to preserve the integrity of the natural watercourse or wetland. Due to
insufficient erosion and sedimentation control measures and maintenance of
same, slight sedimentation of Crabtree Creek and severe sedimentation of an
unnamed tributary to Crabtree Creek on the property has occurred.
Response: Due to the topography, it was necessary to install erosion
and sedimentation controls close to the unnamed tributary as shown
on the approved mine maps. When Hurricane Matthew brought
excessive rain amounts to the Raleigh area, 2 of 8 sediment traps
washed out, the basin and check dam downstream of the pipe
installation washed out, and sediment from upstream of the site
collected in the pipe as well. The unplanned released of uncontrolled
stormwater was reported to NCDEQ, and the sediment traps were
cleaned and refurbished.
However, following the most recent 01/02/2017 unplanned uncontrolled
stormwater release, utilizing guidance from the 01/12/2017 mine
inspection and discussions with all involved, we have repositioned
some of the sediment traps, diverted some of water away from the pipe
inlet areas, diverted as much water as planned to the Pit, installed rock

3.
Mr. John Holley
Crabtree Quarry — NOD. Response Letter
March 3, 2017 Page 2 of 7
lined ditches to carry slope runoff; and installed an additional sediment
trapping devices higher up to control the runoff prior flowing downhill
to the existing sediment traps. With these grading changes, field
adjustments to structure locations, stabilizing of all finished grades,
and committed maintenance of the BIVIPs, there should be no impact to
the downstream waterways during design storms.
B. Operating Condition No. 3.C. (Buffer Zones): All buffer zones on the Permit
Renewal Mine Maps dated April 2012 shall be maintained to protect adjoining
property.. These buffer zones, with the exception of the installation of required
sediment control measures and approved earthen berms, shall remain
undisturbed. Additional buffered areas below the sediment basins #7 and #8
appear disturbed, as does area upland of basin #3. Additional clearing has been
done along the site's perimeter for installation of a security fence.
Response: As stated above, sediment traps #7 and #8 were installed
close to the watercourse. due to the topography. When Hurricane
Matthew brought excessive water amounts to the Raleigh area, it was. .
necessary to clear an equipment access road to those basins to clean
them out and refurbish them. The entire access road is lined with
washstone, and a diversion berm at the top allows water to flow to the
Pit, while a diversion berm at the bottom directs runoff to trap #8. The
mine permitted buffer areas along the property perimeter are 50 -feet
undisturbed and 50 -feet unexcavated. The roadway adjacent to trap #3
that was used for logging and site access during construction was an.
existing roadbed and was not installed by Hanson. That existing.
-roadbed is in the undisturbed buffer, but it has since been seeded and
stabilized, the stream crossing timbers removed, and the roadbed area
will now be allowed to naturalize. A diversion was placed on the
upstream side of the existing roadbed and will remain after
stabilization. Fencing has been installed in this area as shown on the
plans and has not encroached into the undisturbed buffer. These
.changes are now shown on the attached maps prepared by Draper
Associates.
C. Operating Condition #4.A. (Erosion and Sedimentation Control): Adequate
mechanical barriers including but not limited to diversions earthen dikes, check
dams, sediment retarding structures, rip rap pits, or ditches shall be provided in
the initial stages of any land disturbance and maintained to prevent sediment
from discharging into any lake, wetland or natural watercourse in proximity to the
affected Land. Slight sedimentation of Crabtree Creek and severe sedimentation
of an unnamed tributary to Crabtree Creek has occurred because clean water
diversions, skimmer sediment basins with baffles and emergency spillways,
diversion ditches and slope drains sufficient to convey interior sediment laden
runoff to basins have not been properly installed or maintained.
Response: The erosion and sedimentation controls were designed to
pass a 25 -year event, however; Hurricane Matthew was closer to a 100 -
year event. A couple of sediment traps that were installed according to
the mine map (which was based on aerial topography), have since been
relocated and reoriented slightly to match the actual topography as
necessary to divert all runoff to the proper basin.

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 Page 3 of 7
On the north side of the berm, diversion berms have been installed to
direct runoff away from the top of the pipe inlets.
An additional sediment trap (sediment trap #3A) has been positioned
where it will control the runoff previously handled by trap #3. The
original sediment trap #3 was installed at a higher elevation and only
captures a small portion of the designed. runoff.
On the northeast end of the berm, a diversion berm/bench was
installed to direct runoff to sediment trap #9 as originally planned.
Where the berms meet to form valley like conveyances; rock lined
ditches with rock check dams were installed.
On the south side of the berm, an earthen diversion ditch was installed
to direct stabilized runoff from the top of the berm to either the pit or
the rock lined ditch that carries the 36" pipe outfall to the creek
channel.
Sediment traps have been cleaned, walls seeded, baffles refurbished,
and inlets and outlets reworked.
D. Operating Condition 94.C. (Erosion and. Sedimentation Control): All mining
activities, including the installation and maintenance of all erosion and
sedimentation control measures shall be conducted as indicated on the Permit
Renewal Mine Maps dated April 2012 and supplemental information received by
Land Quality Section on April 27, 2012 and July 24, 2012 with the stipulation
-that rip rap armoring the Tailings Stockpile Area shall be NCDOT Class 1 and a
minimum 18 -inches thick. The erosion and sedimentation control measures
were. not installed or maintained as: indicated.
Response: The tailings stockpiles is located south of the process
Water settling ponds, and the base that is present and visible now had
already been established when that condition was added to the permit
in 2092. Any expansion of the tailings stockpile will receive the
armoring as indicated on the drawings.
E. Operating Condition #4.D. (Erosion and Sedimentation Control): An erosion and
sedimentation control plan(s) shall be submitted to the Department for approval
prior any land disturbing activities not indicated on the revised erosion control
plan or mine maps submitted with the approved application for a mining permit
and any approved revisions to it. Such areas include,. but are not limited to
expansion outside the approved pit area, creek crossings, or expansion of waste
of overburden or waste disposal areas. Revised plans reflecting current site
conditions with additional erosion and. sedimentation control measures as well
as clearing for the perimeter security fence and clean of stream was impacted
by sediment loss has not been submitted or approved.
Response: As part of an Agreement with the City, a fence would need
to be installed around the Pit. Because of the terrain, 1t was decided to
clear a wide enough area for equipment to access and haul the 8 -foot
fencing and install it. The path'has since been stabilized with seed and ,
mulch, Check dams and water diversions have been installed at
necessary intervals to slow runoff. The. fence has been installed, and x
the initial stream. crossing that had :been left by the timber folks has '
been removed. The fence and associated erosion and sedimentation
t
r

Mr.. John Holley
Crabtree Quarry —NOD. Response Letter
March 3; 2017 Page 4 of 7
control design have been included in the attached mine maps prepared
by Draper Associates.
1. In order to bring this site into compliance, the following corrective actions must
be taken. Please see attachment 1 for photos of progress to date.
Repair the overburden berm at the plant and at SDO-4. Install.a check dam and
anchor to side berm near SOO-4.
The plant settling basin berm has been shaped, refurbished, and
stabilized. The emergency spillway was refurbished, and the rock lined
outlet channel leading to SDO-1 has been refurbished. Please see
attachment 3 photos.
The northwest corner of the berm surrounding the fresh water pond in
the SD04 watershed has been refurbished, seeded, and stabilized with
erosion control blanket. The perimeter areas have been graded to drain
to the SD0-4 rock check damand outfall Side berms have been
installed and are anchored the check dam: Please see attachment 4
photos.
2. Replace the silt fence and wattle across the channel with temporary rock dam.
Shape all check dams to conform to plan detail with a defined weir and anchor
to slopes.
DWR approved the temporary rock dam, and it has been installed
Check dams have been shaped properly with a defined weir and anchor
to slopes.
3. Install and stabilize clean water diversions. per the approved plana
Completed
4. Install additional diversions and slope drains sufficient to direct sediment laden
runoff down slopes into basins.
After the project was regraded, diversions berms were installed, piped
slope drains, and rock lined ditches with check dams were installed to
direct runoff into basins. Above sediment traps #5 and #6, an additional
sediment trap was installed at a higher elevation followed by a rock
lined ditch directing the runoff to the proper basins. Above sediment
traps #7 and #8, a cutoff ditchlbench was installed to divert runoff away
from the pipe outlet and either send the: stabilizedrunoff to the pit or to
the 36" pipe outlet
5. Repair basins, skimmer devices, and baffles to original function. Shape basin
emergency spillways to conform with plan details.
Basins have been repaired and skimmer devices functioning. Baffles
and emergency spillways have been refurbished.
6. Relocate Sediment Basin #3 to low point of drainage area.. It is perched on the
side of the hill and is not effective as positioned. This as well as past heavy rain _.
events may be a contributing factor to sediment loss to the stream.
The additional sediment trap has been installed and is labeled as #3A
on the attached revised mine maps. The erosion and sedimentation
controls were designed to pass a 25 -year event, however; Hurricane
Matthew was closer to a 100 -year event A couple of sediment traps

Mr. John Holley
Crabtree Quarry — NOD Response Letter,
March 3; 2017 Page 5 of 7
that were installed according to the mine map (which was based on
,that
topography), have since been relocated and reoriented slightly to
match the actual topography as necessary to divert all runoff to the
proper basin.
7. Install additional silt fence along top of stream banks as well as over and around
top of all culverts. Implement appropriate erosion and sediment control devices
for soils disturbed for installation of perimeter security fence.
Fence areas have been stabilized with seed and mulch. Rock check
dams have been installed. The controls are on the attached revised
mine maps prepared. by Draper Associates. The majority of the fencing
has been installed,
8. The proposed clean water diversions were not installed, and stabilized as
required by the approved pian. Runoff from the un -stabilized clean water
diversions (especially above skimmer sediment basin #8) appear to be.
discharging to basins. Some of the existing basins and diversions may be
handling more runoff than their design. parameters. Recheck all diversion and
basin calculations for adequacy to convey water and treat sediment and make
necessary adjustments. This as well as past heavy rain events could be another
contributing factor to the sediment loss in the stream.
The diversion berm has beeninstalled to route eastern berm portion
runoff to the Phase 1 sediment trap 99. A berm has been installed to
route the runoff from the Phase 1 berm and gravel storage yard to the
Pit
9.. Provide groundcover for all slope, diversions, and .other bare soils (the use of a
suitable RECP or, if necessary in ditches, appropriately sized rip rap). is
recommended. Vegetation in previously stabilized areas has failed and should
be reseeded in accordance with approved plan specifications.
All areas have been seeded per the approved temporary seed
schedule. Most of the exposed slopes have received RECP.
10. Recover sediment lost to stream and buffer and restore affected areas to the
satisfaction of the DWR staff.
The DWR instructed Hanson to leave a depth of 2 -inches and recover
sediment above 2 inches, so Hanson personnel conducted stream
cleanup of sediment using the following criteria:
Sediment Clean -un (Hand Removal) - Hanson personnel and
contractors will be engaged to manually remove excess sediment from
within the stream channel. For purposes of this discussion, deposited
sediment will be divided into one of two categories: Category 1-.
Deposition in excess ofapproximately two (2) inches in thickness,
which will require removal and proper disposal, and Category 2 =
Deposition less than approximately.two (2) inch in thickness, which will
remain in place. .
All clean-up excavation will be performed by hand Excavation will be
performed with manual labor using shovels (flat head or "sharp
shooter") and 5 -gallon buckets. Caution will be applied so as not to
disturb the original stream bed or adjacent ground surface. Recovered

: Mr. John Holley
Crabtree Quarry — NOD. Response Letter
March 3; 2017 Page 6 of 7
material will be transported away from any channel, wetland, or pond
and disposed of properly (in accordance with State and local
regulations).
Stream cleanup campaigns were conducted on 01/21/2017 and
01/2972017. The first day, 120 5 -gallon buckets were filled 75% full, and
the second day, 55 5 -gallon buckets were filled 75% as well. That
equates to about 3.25 cubic yards of sediment removed
Wattles .were installed downstream of the work area to stop any -
agitated sediment and were removed each time the work area changed.
The bucket contents were removed from the stream area and deposited
well away from the stream channel Care was taken.to ensure there was
no possibility of the sediment re-entering the stream. The sediment
was, placed in dug holes and then covered with topsoil and leafy
debris.
Please see Attachment 2 showing photos taken during and after the
cleanup, efforts. These same photos and above information were
submitted to Ms. Stephanie Goss with the DWR on February 23, 2017.
11: Modify existing permit_ and plan to reflect current site conditions and include plan
for the recovery of.sediment lost to stream with method of restoration and for the
perimeter security fence.
Please see the attached revised mine modification plans, attachment 6.
The plan for sediment recovery, as stated above in #10, has been
approved through email correspondence with Ms. Stephanie Goss on
February 23, 2017.
The area cleared for fencing has been seeded and stabilized. Any
disturbance created by. installing the remaining fencing will be seeded
and stabilized again as necessary. Please see Attachment 5 fence
photos.
Hanson regrets sediment reaching the unnamed tributary and possibly Crabtree Creek due
to a number of reasons stated in the inspection report and found in. subsequent on=site
visits. Our.personnel and.contractors have diligently taken corrective actions to
(1) Clean, and refurbish existing sediment traps and shape the check dams
(2) Install additional sediment traps and rock lined ditches to feed them
(3) Re -assess all sediment traps and water sheds, and then install berms to direct runoff
to the correct sediment structures
(4) Regrade the entire berm, and then stabilize the entire projectarea.
(5) Conduct sediment cleanup (hand shovel & buckets) in the stream as directed by
DWR.

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 Page 7 of 7
Should you have any questions or need additional information, please contact me at our
Morrisville office: [phone], or you may contact Tyrus Clayton of Draper Aden &
Associates: [phone].
Sincerely,
Jac Garvey
Environmental Manager
Enclosures: Attachment 1: Site Photos of Berm E&S work
Attachment 2: Photos of Stream Cleanup Effort
Attachment 3: Photos of Plant Berm Repair and SDO-1 Channel
Attachment 4: Photos of SDO-4 BMP Refurbishment
Attachment 5: Fence Photos
Attachment 6: Revised Mine Maps: Cover; M&EC1; M&EC2; X-4; X-5
cc: Toby Lee, NC & SC General Manager
Jim Hilton, Plant Manager
Tyrus Clayton, Jr., PE, Draper Aden & Associates
Danny Smith, NCDEQ RRO DWR Supervisor
Bradley Bennett, NCDEQ Stormwater Permits Manager
Janet Boyer, PE, NCDEQ EM&LR Mine Specialist

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 1— Berm E&S Control

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 1 — Berm E&S Control

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 1— Berm E&S Control
Sediment Trap #5
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New Sediment Trap above Sed Trap #5

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Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 1 —Berm E&S Control
Trap #8

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Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 2 - Stream Cleaning

Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 2 - Stream Cleaning

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Mr. John Holley
Crabtree Quarry — NOD Response Letter
March 3, 2017 ATTACHMENT 5 -Fencing

MEN
mom
"' anson
HEIDELBERGCEM E NTGroup
HANSON AGGREGATES SOUTHEAST, LLC.
SOUTH REGION
SHMT INEMM
COVER SHEEP
MINING & EROSION CONTROL PLAN M -EC -1
;t ENLARGED PLAN AT NORTH END
M -EC -2
RECLAMATION PLAN
RPA
TYPICAL CROSS-SECTIONS
X-1.
DETENTION BASIN
X-2
DETAILS
X-3
DETAILS
X-4
BERM CONSTRUCTION
X-5
BYPASS CHANNEL
X-6
DETAILS
X-7
DETAILS
X -B
*SHEETS MODIFIED MARCH
2017
2101 Gateway Centre Blvd.
Suite 100
Morrisville, NC 27560
Phone: [phone]
CRARTREE QUARRY
5001 Duraleigh Road
Raleigh, NC 27612
Wake County
Phone: [phone]
VICINITY MAP
MINING PERMIT No: 92-03
PERMIT DRAWINGS
MARCH 2017

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T .:
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:XISTING
TILT FENCE 7 ,,g - 501 UNE7CCA'VATED RVIFF£R - L
VEIR1—
WCTION - - ~�JOJ
msmu; 1
STREAMS I'0 BE t^'
RE-ROUTED ONTO
BENCHVIA ARMY - 4S
CORPS DF ENGINEER!y V-ZMI
�4PPROVAL *ITyypIG x
,rr r t
t `6'
STREAM RE
`-kROUTE BENCH
(PHsS1 3) --
n PROPOSED VISUA
rR,IER BERN IN
ASF PHASE 2
mNua.E
j` mzs'EPS:«r
POSED MINING AREA,
N PHASE 3F AFTER
'EAM HAS SEEN T- _
RE TED IN BENCH
E SHEET X -G GNI
0 AIL O.STR - t
PPE
t -4
Z PROPOSED
TswPORARY
m SEDIMENT TRAP
` ST Z IN PHASE 2
PROPOSED
TEMPORARY
SEDIMENT
TRAP ST 1
IN PHASE
�qy un.T
,9, o'NAS Frw
ROD0'E,/!! /
TEMPORARN
SEDIMENT TRAP
ST 6INrHASY2
H
-a
W
a
i PROPERTY
IN PHASE 2
PROPOSED 1y
n swF
rA1
E
TEMPORARY
SEDIMENT
erv.xssa- 1
r
TRAP ST 7
t -4
Z PROPOSED
TswPORARY
m SEDIMENT TRAP
` ST Z IN PHASE 2
PROPOSED
TEMPORARY
SEDIMENT
TRAP ST 1
IN PHASE
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TEMPORARN
SEDIMENT TRAP
ST 6INrHASY2
H
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i PROPERTY
IN PHASE 2
,+--PIT EXPANDED )AN
HAWDN t
PROPE txv
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LIVEi151 N �'
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- OFFICE
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-
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GPIAPHIC SCALE:
0— 111[11 i I I a a
._ G�_
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AC
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4 's
'-EA;ESTHAT MCE 14n
PROPOSED TEOPORARY
S�'€DIMENT TRAP ST A
IN PHASE 2
I EXISTING
TEMPORARY
SEDIMENT
TRAP ST 9
IN PHASE 1
ftI RIDGE
2

aaaatnrctma specuneatrOas:
MATERIALS
1. Use a syMlbetic filter fithoic of at Iran g5% by weight of polyolcfim or poly., which is —fled by the
muhufadutsr ar supplier as cOnfarming to the raquinnreOa in ASTM D 6161.
Symhetic filter fabric should ctualn ullaavioln ay inhibitore inti emblI:aas w provide n minimum of 6
months of cxpttmd usabto Mmwtrsuetiun life ort n tennpasaae range a[ 0 to 120° F.
3. Ensure that "Its rot saliment 1'rnres are 1.33 lb+lmear R steer with . tmnimum lengnit Of 5 feet. Make sure
ilia[ ste:i posts have pnjxtiom to facilium fdxaening the fabric.
mead anent of xmndaM atrengtlh f5fmr fahric, use wits frnne with a. mieimum 14 gauge and a
maxlmuw mesh spacing uffi inchm,
CONSTRUCTION
I. COnstnuct the seri—I burner Of W- decd aueogdh or extra strength almOretic films fabrics.
2- Ensme that the height of the sedlmenl fence docs nal meted 24 iuces abovo the gtuund surface. fHighd
feacrx awy impamd rvloma of water xufTwient to cause lalun of the stnuemrrJ
3. Cmutnvct the filter fabric from . eoMmuena, colt cut m the Length of the barna tO avoid joints. When tdutu
ore nOcena.ry, sectenly fasten the filter cloth only at a In
pout with 4 feet mmimsan —tap to the next
pool.
4. Support eandardstrength filter f k.. by w.ar m -h f ed . ••cyeely to the pslope side or the posts
Extend the wine mesh suppon to the bonogt of the trench. Fasten she wine reinfwcentmL then fahtic on Use
updope aide ofthe f— pm, Wire apit. :ip hies should bout munuuum$0 pound tensde.1tonu dh.
5. When a wire mesh support fence is used, spurt Posts a ,at.— of B €rn agent Support posts should 1e :2 Goa . n.A4 n2 rix M. weed ,ve r,voxev m to t+ew.r,.e
driven securely low the ground a minimum. of 24 inches. erom,eu an oral none
6. Esta -eenglh filter fahnc with 6 fare post spacing does not require wine mesh suppon force. Securely
fasten the filter fabric directly to posts. Wire Or pLubc zip tics Mw%14 have rnimmum 50 pound tensile
strength. tt e.- a —soar gea.e,ae 1— ar
7 Fxca am a bench appr m—uely 4 inches wide and g ttuhm don the - .et ne..sa ro .sex .lin -
-.>' :n d e a. as
grope �ramN Inannc I ...,..
g Place t2 t hes of the fah 'e aloM the bonct. and aide of Ilia Manch Pm
B pmpttsdi line flf u and
9 BackE11 the udnh hili so I place ova the filter fabric and mrnp m TI.—gh compaction orthe
backuas .tstxr,ne .rdraes
cw.w hevplt.
fill u criticall m Rilt fence performaOce. Rs,"O'�p; ,y y rra � srreuu� Mho:
I .
O. D nal ""eh Elie fo6nc to eA.iMJW W_. . m
SEDIMENT FENCE [NSTALLATTON USING THE SLICING METHOD
instead arexravatvag a trench, placing fatxic and that hackfiB"eng tnroch. sediment fence may be iastalled .-
using specially desig"4 equipment that inserts the fabric into a M skod in the gtaoml with a disc. /
it. l
tnsullatw. Specif&otions. sa..ea dem+ags any
I. The brie orbn0a end posts should he at ]dna one foot higher than the middle of she fence Check wnh a
Pesel ire"essey.
2. Porins posts 4 feat apart In x-rdical atcas and 6 fon apse on suadand npp4catiOns. Neww taOme
3. IM1.11 pains 2 reel deep On the dowmrteam side of the All fence. new asclose m possible m the fabric,
asrabling posts to support the fahric from upstream water pnssme. s � - _- -.. — c.�.v ILL- of 1 , .. h
4. install Posh with the nippl fxug away fwm the sill fabric. I e �gaaa 4e.n dos . h„ehas rwsaenml.
5. Attach the fabric w each post w Ih throe uta, df spaced within the sup B mens of the fabric. Atueh each 1e ...... can e m or .w late Ir.acn.
tie dlagmu iv 45 degtew though the fibrix with each puncture w to 1 mch vrnucdiy opsit. Also, tarn tis ural ss w m e n. e.v.. haus.
should be positioned to bang ono Post nipple when tightened to prevent sagging.
6. W aP aMox""'ly 6 """ of fabric around the mi pan and secure with 3 iia.
7. No own than 4 inches of a 36 itch fabric et allowed abase gmund levrl.
B The imLdlluuon .should be ch-kcd ars ce t curd far any deviauum befua comp—... NOTE: 9n rw„a .neva ao, a and alt
nate+ e. ar.as et aaxsrtrosva
9. C—Paeoon is vhully lntvl ret for cffctvr results. Compact the and immediately next to the silt!ince ani. r= O;ka Imo saes, tse.1
fabne wuh the from whoet Of Urc tmcam, -Wd star, Or mltor exerting at 1msr 60 pounds pa square inch.
Compost the aPsaeam sok fi-4 and deco each side twice Fara weal of 4 trips. tea' l
Matmanancr:
[aspect so UMM fences m lent — a week and ager each rainfall. Make any q -.d repairs imrnedumely.
Should the fabric ora ser5mem farce collapse, tens, deesnopau or beeote inef@cdve, replier it prmnptly
Ranco SdkimOnt deliesits as necessary w p—de adequate swage valrune for the next runt and to rdlwe
pressum On the fence. Take care to amid unilcrmi—g the farce dung cledwut. NOTE:
Remrwe aIf funeiug .0-11 and utmmbhe setihneut d'Posiu and brio the arca m - oo+. — em
Ute emnbuti tin' Pp,� y R grade and stabilize it alar net alma stn
ng mage mea hos been I suhiditad. I '.�,oh: •Oval �
sea�h saeaw at _ `
SEDIMENT FENCE DETAIL
M ptapr arM�le
arnw ra ':a
not to scale
Fm .Menarar puual..
-270
oe
0006�-
r -7-04010
O
IEv NQ DE5Ixe"ON OF RLM510N: BATE
rO y�, O 1 I
dO N C? f 03
REM E ro PilPA
All flows now directed to pit
I.
F+--+- hi'. t,: i,
24" FUSION WELDED
HDPE
BERMTO REMAIN AT
ELEVATION 331.9.
12' WIDE BAFFLE OF SURGE STONE WITH
X12" #57 STONE ON FRONT
3'
EXISTING 15" PIPES
TO SERVE AS OVERFLOW
SEDWENT-RA%N_aECTl0N_0fA
- Y-slxa 1 'al!",:ad .LN3kpgn:) ? A1lVONI'1OB A1T13dOtld
f
•AIiVONnou Ai113drr0&s w<
till
1 I
I;E a
Jr�
PROPOSED POND TO BE
7, SOOSF WITH 2:1 SIDE
SLOPES
CR
■■■
ue
J
M
li z
I2LS.r1hlNfal:c Hrt[H MAY GRAPHIC SCALE: � a�ay lv
"Oft ONTAL SCOL£ S" .200' caca LU
V
0 200 600 J, #
W
-- _ a z
tom— `�_=ii'' W C
to
a
Y, Al�
J/ -S•/ _.
RE5`EVIOUSLY APPROVED SEDIMENT BASIN PLAN,
DRAWMK LAB
CHEtkEO: LOB
�, `. •� DATE; dAHVARY I:i. 20th
,� \Y_'r IiELap+: sauTH
\, V� �1 � LOCATION [7IABTREI.
1 I % IRA__CraDoreeJ,Y-EC.Oa%i
\\ sl -4L
1' - 200'
VERTICAL:
GRAPHIC SCALE:
SHEET Ho:
-HORIZONTAL SCALL V ■ 00`
0 SO 150 X-4
oF:

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