20210727_Mine_Maps

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COVER SHEET
MINE MAP
RECLAMATION PLAN
EROSION CONTROL DETAILS
Arkk,.JLINA
6728 Catbonton Road
Sanford;! North Carolina 27330
[phone] phone
drafting"[e-mail]
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- i RIPS I () SLOPL"t ()"BASINS .-' BSltl A �.. '.
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� 1 119' WATER F��,TA�tCE FROh1 OLiTLCT T TREAM ;` - �� __-- . — ... r . , r.c:•r� r� n CI. _..... , �
-TAILINGS/SEDIMENT PONDS
=-STOCKPILES ..
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PROCESSING AREAIHAUL Rt
MINE EXCAVATION
WASTEPILES
TOTAL AFFECTED AREA
GENERAL PROJECT INFORMATION .. ' - - ` / .-4_
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The Guff Mine No. 3 Permit No. 19-11) contains an approximately 318.5-acre tract of land \ - -�-• .
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nd Is allowed to be disturbed as rioted in , \... .,, I `\ .._.-�- \ ,; ' . -
in Chatham County. Currently; 183.7 acres of is _
LEGEND , 1 / .�;,
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the cover letter attached to the current mining permit. _
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h existin ermltted area. Subsequent Basin) I I
will continue as ro osed at t e q - ,+ i / i ` t i �.
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CV11nIng P p g P � 1 ,
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G H I J and their associated berms will be added to collect stormwater runoff from the
Property Line and Mine Permit Limits _ _ .
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new mine areas. One stream crossing Is required to access these basins. During Existing 10Year Mine Limits ,
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construction of the stream crossin ,temporary berms and sediment traps w191 be inst r ,. .
crossing
,temporary
s
__.Topographic Line v
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ontain the .
ins consist of diversion berms with brickbat outlets. The basins can c .. . , 11 t ,.
The bas Proposed Diversion Berm ;/- --
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runoff from the 10-year rain event, and the outlets can pass the 25-year rain event. - I -.".
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of the roadwa vnll. rt.. -
stream crossin will consist of two 2} - 48 inch diameter concrete culverts. Portions Y Existin Diversion Berm , 4 _ -
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be overto ed dunn the 25- ear rain event and are to be stabilized for this rain event.
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Tom ors Silt Fence for Stream Crossih - -- ---
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h orb 50 ftwooded buffers. - -. _ _.., .., a ,.. ,:::4 _. _ '�/ _- ___
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the exThe The proposed mine areas are screened by g P 9 P Y Y Lake or Sueam � _ \ ` : , ; , ;._ _.. ; _ , -. I � _ -,\ '`
A 2{i0ft wooded buffer will be provided for the stream. .
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_ 'Ditch
r ed areas will be sloped for positive .
upon completion of the mining activities, the distu b p P \ ",� �� &� A /' `
.,'Tree Lire NOTE: EXTEND BERM AND CHANGE BRICKBAT LOCATION \ ,, , . . - f - _ \, � . -
drainage and ve etated er the vegetation plan. Berms, stockpiles, and sediment basins _
g g P 9 AS NEEDED FOR FU,TUFjE EXCAVATION. //...�t� fl / ;I
will be removed with ositive drains a rovided. Roadways indicated on the mine Inaps \ ¢
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will remain In place, T tqr ato I / / / i
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MAINTENANCE CONSIDERATIONS Basin LIfi11tS_ f __
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hall be checked for stabilit and operation ` /
NOT, EXISTING BASIN E WAS FORMED r
1. All erosion and sediment control practices s Y P r /_ .
following every runoff -producing rainfall. But in no case less than once a wfiek. Any ', �- r — 1 XISTING 18 IN. CLAY PIPE BY EXCAVATION WITH SOME,MINOR.FILLING
.
necessar re airs will be made immediate) to maintain all practices as designed. For ,,, Sediment Storage E RAI t - _
' " (TO BE REMfl EDP ;
Y P Y _
\ PERiMETEIr BASIN TO B SED
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t level within a differential tolerance of .
back bat outlet sections, verify uniform cres e
Area (typical) (SEE DEVILS}:.
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3.0 inches. Brick Bat SecUor+ /
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(typical) ' /
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2. Replace one -foot thick filter section of brick check dam when clogged with fine /
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sediments.
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3. An seeded areas shall be fertilized, re -seeded as necessary, and mulched accordiIj to r
specification in the vegetative plan. ..
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4, Remove sediment from each basin and restore sediment storage area to original .":�_
dimensions when sediment has accumulated to one-half (1/2) the design depth.
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NOTE:
THESE PLANS ARE A DUPLICATE OF THE PLANS PREPARED
BY ENGINEERING & ENVIRONMENTAL SCIENCE COMPANY 11
DATED 11/17/2005, THESE PLANS HAVE BEEN CREATED TO
ACCOMPANY THE MINE PERMIT TRANSFER. `•

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BASIN SCHEDULE
Basin Brick Bat Basin Surface Sediment Staragd, ft. Brick Bat Adjacent Berm
No. Height (A) ft. Area, ft
2 Plan Dim, (ft. by ft.) Length (B) ft. Height (C) ft.
A-1 A-2 2.5 >200,000 Surface Area of Basle A-1 .10 4.5
A-3, & A-4,
B - 5 53,700 36 6
68ft x 136ft. x 3ft.
C 5 44,000 29 6
62ft x 124ft. x 3fl.
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D 5 37,000 57ft x 114ft. x 3ft. 32 6,
'D2 5 37,000 57ft x 114ft. x 3ft. 32 6i
E NIA 191,664 N/A 3
Surface Area of i3as"in B
F 5 82,328 66ft x 129ft x 5ft 55 6
G 5 78,995 39 6
62ft x 122ft. x 5ft.
H 5 52,621 39 6�
62ft x 105ft. x 5ft.
1 5 279,236 100 6
80ft x 1601t. x 5ft.
J 5 10,455 10 6
24ft x 45ft x 5ft
Note: Sediment Storage requires a depth of 5 ft.
BRICK BAT SECTION SPECIFICA,riONS
1. Remove topsoil from area of brick bat section and place brick bats directly on the filter fabric.
For the horizontal mat that extends 4 ft, downstream of the check dam toe, soil shall be removed
to accomidate the 1ft. thick section so it is flush with existing ground level.
2. Construct check dam to dimensions specified in check darn details. The top of the dam (crest
level) shall be maintained at constant level for the full length. Where the check dam meets the
soil berm, the brick shall extend at least 1.0 ft. above the crust level.
5+
Brick Bat Section (BASINS A,B,C, D, D2, F, G, H, 1, and J)
(NTS)
Cross -Section
Brickbat 5'
STREAM CROSSING DETAILS
Plan View
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ROADWAY CULVERT DETAILS &
PROPOSED OUTLET PROTECTION ,
)70
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>60
255
4.83 ft.
Normal Pool
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Existing Ground
OUTLET CROSS-SECTION
(NTS)
I 32 ft. (approx.)
2' Raised Ground Level
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j •,rxxirxw.r 2.23 ft. Max.
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SIMI a ✓is J °° °°°°I°°1 j°°� P1 j°° �G11IA
.•�' �o'i�I� sloes f �. °A�Oj°°I°°�Ip'
Filter Fabric
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Note:• a r • • • .•r • • •
i. •/' '• • • i.installed.
BASIN E CONSTRUCTION SEQUENCE
Road�wiv Cross -Section (NTS) a o a; r o ; N r r�„ r*):__ --A
MAINTENANCE CONSIDERATIONS 2LL
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12" MIN. Q d 1
1. All erosion and sediment control practices shall be checked for stability and operation 1.DLT
following every runoff -producing rainfall. But in no c0se less than once a week. Any FILTER
necessary repairs will be made immediately to maintain all practices as designed. For FABRIC
brick bat outlet sections, verify uniform crest level tryithin a differential tolerance of Front View (NTS)
Glass B OVERFILL 6"
DESIGN Erosion Control FOR SETTLEMENT
3.0 inches. SETTLED 21„ Stone
thick filter section of brick check date when clogged with fine TOP MIN
2. Replace one-foot1 1 FREEBOARD
sediments.
->T� I Tr�-tI tiI 5'oti 6FT c 11r
3. All seeded areas shall be fertilized, re -seeded as necessary, and mulched according to 1.5 i? t
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E 1 I �o o°E,�' ccs' a 00 �I \ 2:1 SIDE ,
specification In the vegetative plan. 4 FT I g�r� o ogo I SLOPE MAX
4. Remove sediment from each basin and restore sediment 6torage area to original
dimensions when sediment has accurnulated to one -halt (1/2) the design depth. FILTER o 1:1 SIDE SLOPE
FAaR1C 4�p�o h4AX NATURAL k
3 FT GROUND
1
MIN
F. Trap Surface Area
A
I 18' x 35' �'
2 15'x30'
Soil Berm Cross -Section +' 3 12' x 24' '
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3' to 5' _J 4 13' x 26` 4_
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Id' nliu. t 4' ttt ur
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2 2 C
UndisturCed Undi,tucbed f
1 1 i nuFrtr BurFer
Note: Height of berm will increase at brickbat section. , Stream Crossing Construction SegUetlCC CROSS-SECTION A -A'
=II 11=II-11-11=11=11=11=11=11=I1=1k-11-11=11=11=11=11=11=11=11=11=11=II=II I1=11-11
(NTS)
1. Install sediment traps and temporary berms.
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2. Install culvert adjacent and paralleling invert of drainage way if flowing water B'
COLLECTION BERM SPECIFICAi lONS is present. If no flowing Water is present, or dry conditions are present, install l3
n truct berm b placement of overburden. culvert in drainage way invert.
1.Cos by g Y � ,
l ^t,�RJl�tll Feed
2. Prior to placement of materials for berrfl formation, cut vegetation
nearly flush with ground (if applicable). 3 after embankment filling, immediately seed and rnztich embankment slopes.° - neFlourtS�upedrortw�ittieratn��z)
3. Compact materials in 1ft. lifts by construction traffic.
4. Revegitate the berms the same day of construction. g
CROSS-SECTION B-13 NOTE:
(NTS) THESE PLANS ARE A DUPLICATE. OF THE PLANS PREPARED
BY ENGINEERING & ENVJIRONMENTAL SCIENCE�COMPANY
DATED 11/17/2005. THESE PLANS HAVE BEEN CREATED TO
ACCOMPANY THE MINA PERMIT TRANSFER.
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