20210607_Mine_Maps

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NOTES:
1) 3:1 OR FLATTER SLOPES TO BE
MAINTAINED ON ALL EXCAVATIONS
2) NCDOT PERMIT NO. D112-014-21-00002
3) NO FLOOD ZONES LOCATED AT THIS
PROPERTY.
4) GREASY CREEK LOCATION DETERMINED
FROM AERIAL PHOTOGRAPHY DATED
2017.
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209 WALN UT ST.
STATESVILLE NC 28677
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-� PROPERTY BOUNDARY
— - 25' PROPERTY BUFFER
— - — 50'STREAM BUFFER
300'STRUCTURE BUFFER
..x. LIMITS OF DISTURBANCE
• DRAINAGE AREA
—XX— SILT FENCE
- - STREAM
PARCEL BOUNDARIES
-- - CONTOUR MAJOR
CONTOUR MINOR
APPLICANT: DAN WALL
NAME OF MINE: HOOD CREEK SOILS
COUNTY: CALDWELL
DATE: 5/20/2021
PREPARED BY: JUSTIN FETZER
SITE DRAINAGE AREAS
MINING PERMIT
HOOD CREEK SOILS CO.
LENOIR, NC
HOOD CREEK SOILS CO.
HNA ENGINEERING
COA#: SCALE: V= 100'
DESCRIPTION I DWN BY I APP BY I It/// -,• \\\%` I INNOVAOVE WASTESOWTION5
6 7
PROJECT NO
DWG: MININGPERMIT
DATE: MAY 2021
SHEET NO.:
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NOTES:
1) 3:1 OR FLATTER SLOPES TO BE
MAINTAINED ON ALL EXCAVATIONS
2) NCDOT PERMIT NO. D112-014-21-00002
3) TOTAL ROAD AREA: 1.96 ACRES
4) 18" DOWN DRAINS TO BE INSTALLED AS
NEEDED AND WILL BE DIRECTED INTO A
SEDIMENT BASIN.
5) NO FLOOD ZONES LOCATED AT THIS
PROPERTY.
6) GREASY CREEK LOCATION DETERMINED
FROM AERIAL PHOTOGRAPHY DATED
2017.
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LEGEND:
PROPERTY BOUNDARY
— — — 25PROPERTY BUFFER
— 50 STREAM BUFFER
— 300'STRUCTURE BUFFER
LIMITS OF DISTURBANCE
�_- DRAINAGE AREA
—x—x— SILT FENCE
}----- 18' PIPE
cv GATE
STORMWATER FLOW
—' PATH
-- STREAM
PARCEL BOUNDARIES
------ CONTOUR MAJOR
CONTOUR MINOR
APPLICANT: DAN WALL
NAME OF MINE: HOOD CREEK SOILS
COUNTY: CALDWELL
DATE: 5/2O/2021
PREPARED BY: JUSTIN FETZER
S �•. ^,+.. ---- wrFULz .,. TITLE:
&SC FEATURE
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`"�\1•. 4 ��\_ \ 1f CwCPE1EPIPE 1 N .
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�� ��� v - �`e..—`� ``►-��� ti arc PROJECT: MINING PERMIT
HOOD CREEK SOILS CO.
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-""- `�~` '�,. ",. �. �,...---,� •�_-- ice/ v LENOIR, NC
CLIENT:
-1k HOOD CREEK SOILS CO.
209
\��• - — `�\ �� �P� ST.
HNA ENGINEERING
STATESVILL\ NC 28677/
COA#: SCALE: 1" = 100'
—E►.r.. -- �; S � 1 I � � � � >�I I f \\\�� �:� 5 $ j•�! //ems
\\ =Z•� SEAL
FOR PERMITTING PURPOSES ONLY =A•° 0304.30 �•�� ~ \ •��
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S 4 1 5
DESCRIPTION
6
DWN BY APP BY
7
INNOVATIVE WASTE SOLUTIONS
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PROJECT NO
DWG: MININGPERMIT
DATE: MAY 2021
SHEET NO.:
4 OF 10
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GENERAL NOTES
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SEEDING PROCEDURES
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1. SEEDING PRODUCTS SHOULD BE TRANSPORTED AND HANDLED IN ACCORDANCE
WITH MANUFACTURER'S INSTRUCTIONS.
2.GRASS SEED MIXTURE SHOULD BE DELIVERED IN SEALED CONTAINERS; DAMAGED
PACKAGES WILL NOT BE ACCEPTED.
3.FERTILIZER SHOULD BE DELIVERED IN WATERPROOF BAGS SHOWING WEIGHT,
CHEMICAL ANALYSIS, AND NAME OF MANUFACTURER.
4. PROMPTLY INSPECT SHIPMENTS TO ASSURE THAT PRODUCTS COMPLY WITH
REQUIREMENTS, QUANTITIES ARE CORRECT, AND PRODUCTS ARE UNDAMAGED.
5. STORE AND PROTECT PRODUCTS IN ACCORDANCE WITH MANUFACTURER'S
INSTRUCTIONS, WITH SEALS AND LABELS INTACT AND LEGIBLE.
6. SITE REVIEW MEETINGS WILL BE HELD MONTHLY. THE MEETINGS WILL BE
ATTENDED BY THE CONTRACTOR, SITE FOREMAN, AND OWNER OR OWNER'S
REPRESENTATIVE. RESULT OF SITE REVIEWS WILL BE DOCUMENTED AND
CIRCULATED TO THE MEETING ATTENDEES BY THE CONTRACTOR.
7. DURING CONSTRUCTION, THE RECORDING OF SEEDING MAINTENANCE DATA IS THE
SOLE RESPONSIBILITY OF THE CONTRACTOR. AT THE END OF WORK, CONTRACTOR
SHALL SUBMIT MAINTENANCE DATA TO OWNER TO ENABLE CONTINUING
MAINTENANCE. MAINTENANCE DATA SHOULD INCLUDE MAINTENANCE
INSTRUCTIONS, CUTTING METHOD, MAXIMUM GRASS HEIGHTS, TYPES,
APPLICATION FREQUENCY, AND RECOMMENDED COVERAGE OF FERTILIZER.
8. THE CONTRACTOR WILL COMMUNICATE WITH THE OWNER OR HIS
REPRESENTATIVE ON A MONTHLY BASIS TO SUMMARIZE WORK PERFORMED AND
IMMEDIATELY NOTIFY THE PROJECT MANAGER OF ANY FAILURE OF THE SITE TO
REMAIN STABILIZED.
STABILIZATION TIMEFRAME
A. SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF THE SITE WHERE
LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED
ACCORDING TO THE FOLLOWING SCHEDULE:
1. ALL PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND ALL SLOPES
STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3:1) SHALL BE PROVIDED
TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS
PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST
LAND -DISTURBING ACTIVITY.
2. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT
STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY
EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY.
B. CONDITIONS - IN MEETING THE STABILIZATION REQUIREMENTS ABOVE, THE
FOLLOWING CONDITIONS OR EXEMPTIONS SHALL APPLY:
1. EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED
ON WEATHER OR OTHER SITE -SPECIFIC CONDITIONS THAT MAKE COMPLIANCE
IMPRACTICABLE.
2. ALL SLOPES 50' IN LENGTH OR GREATER SHALL APPLY THE GROUND COVER WITHIN 7
DAYS
EXCEPT WHEN THE SLOPE IS FLATTER THAN 4:1. SLOPES LESS THAN 50' SHALL APPLY
GROUND
COVER WITHIN 14 DAYS EXCEPT WHEN SLOPES ARE STEEPER THAN 3:1, THE 7 DAY
REQUIREMENT APPLIES.
3. ANY SLOPED AREA FLATTER THAN 4:1 SHALL BE EXEMPT FROM THE 7-DAY GROUND
COVER
REQUIREMENT.
4. SLOPES 10' OR LESS IN LENGTH SHALL BE EXEMPT FROM THE 7-DAY GROUND
COVER REQUIREMENT EXCEPT WHEN THE SLOPE IS STEEPER THAN 2:1.
u
2
SEEDING MATERIALS
1. TOPSOIL MATERIAL SHALL BE EXCAVATED FROM SITE AND FREE OF WEEDS.
2. SEED MIXTURE: SEED MIXTURES SHOULD BE PROVIDED IN CONTAINERS
SHOWING PERCENTAGE OF SEED MIX, YEAR OF PRODUCTION, NET WEIGHT, DATE
OF PACKAGING, AND LOCATION OF PACKAGING.
3. MULCHING MATERIAL: MULCH SHOULD CONSIST OF OAT OR WHEAT STRAW, DRY,
FREE FROM WEEDS AND OTHER FOREIGN MATTER DETRIMENTAL TO PLANT LIFE.
4. LIME: LIME SHALL COMPLY WITH APPLICABLE NORTH CAROLINA STATE LAWS AND
SHALI. B.E DELIVERED IN UNOPENED BAGS OR OTHER CONVENIENT STANDARD
CONTAINERS, EACH FULLY LABELED WITH THE MANUFACTURER'S GUARANTEED
ANALYSIS. LIME SHALL BE GROUND LIMESTONE CONTAINING NOT LESS THAN 85
PERCENT TOTAL CARBONATES, AND SHALL BE GROUND TO SUCH FINENESS
THAT 90 PERCENT BY WEIGHT WILL PASS THROUGH A NO. 20 MESH SIEVE AND 50
PERCENT BY WEIGHT WILL PASS THROUGH A NO. 100 MESH SIEVE.
5. FERTILIZER: FERTILIZER SHALL COMPLY WITH APPLICABLE NORTH CAROLINA
STATE LAWS AND SHALL BE DELIVERED IN UNOPENED BAGS OR OTHER
CONVENIENT STANDARD CONTAINER, EACH FULLY LABELED WITH THE
MANUFACTURER'S GUARANTEED ANALYSIS. FERTILIZER SHALL CONTAIN NOT
LESS THAN 10 PERCENT NITROGEN, 10 PERCENT AVAILABLE PHOSPHORIC ACID
AND 10 PERCENT WATER SOLUBLE POTASH (N-P-K, 10-10-10). ANY FERTILIZER
WHICH BECOMES CAKED OR OTHERWISE DAMAGED, MAKING IT UNSUITABLE FOR
USE, WILL NOT BE ACCEPTABLE AND SHALL BE IMMEDIATELY REMOVED FROM
THE JOB SITE.
SEEDING SCHEDULE AND RATES
PROVIDE TEMPORARY STABILIZATION IN ACCORDANCE WITH THE FOLLOWING
SEEDING SCHEDULE AND APPLICATION RATES:
SEASON
SEEDING DATES
SEEDING MIXTURE
RATE (Ibs./acre)
LATE WINTER AND EARLY
JANUARY 1 - MAY
RYE GRAIN
120
SPRING
1
KOBE LESPEDEZA
50
MAY 1 - AUGUST
GERMAN MILLET
40
SUMMER
15
SUDANGRASS
50
AUGUST 15 -
FALL
RYE GRAIN
120
DECEMBER 30
PERMANENT SEEDING:
PERMANENT STABILIZATION SHOULD BE PROVIDED IN ACCORDANCE WITH THE
FOLLOWING SEEDING SCHEDULE AND APPLICATION RATES:
SEASON
SEEDING DATES
SEEDING MIXTURE
RATE (Ibs./acre)
NURSE CROP (USE FOR
AUGUST 15 - APRIL 15
RYE GRAIN
40
IMMEDIATE
MAY 15 - AUGUST 15
GERMAN MILLET
10
STABILIZATION)
MAY 1 - SEPTEMBER 1
KOBE K
10
LESPPEEDEEZAZA
PRIMARY CROP:
NON-NATIVE SPECIES
(ONLY USE FOR
SEPTEMBER 1 - MAY 1
SERICEA LESPEDEZA
15
LONG-TERM
SEPTEMBER 1- APRIL 15
KY 31 TALL FESCUE
100
STABILIZATION IF
APRIL 15 - JUNE 30
BERMUDA GRASS
25
NATIVE SPECIES ARE
UNAVAILABLE)
DECEMBER 1 - APRIL 1
DECEMBER 1 - APRIL 1
SWITCHGRASS 2.5 - 3.5
DECEMBER 1 - APRIL 1
BIG BLUESTEM 5.0 - 7.0
PRIMARY CROP: NATIVE
MAY 1 - APRIL 1
SWEET WOODREED 1.5 - 2.5
SPECIES
FEBRUARY 15 - APRIL 1;
DEERTONGUE 4.0 - 6.0
AUGUST 15 - OCTOBER 15
INDIAN WOODOATS 1.5-2.5
DECEMBER 1- MAY 1•
SEPT
SOFT RUSH I 1.5 - 2.5
EMBER 1
1. AREAS WHERE TOPSOIL MATERIAL IS TO BE PLACED AND AREAS TO BE SEEDED
INCLUDE ALL AREAS DISTURBED DURING CONSTRUCTION BEYOND THE LIMITS OF
THE PROPOSED CELL WHICH ARE NOT TO BE PAVED.
2. VERIFY THAT PREPARED SOIL BASE IS READY TO RECEIVE WORK AND SEED ALL
AREAS DISTURBED AS A RESULT OF CONSTRUCTION ACTIVITIES.
3. PREPARE SUBSOIL TO ELIMINATE UNEVEN AREAS AND LOW SPOTS. MAINTAIN
LINES, LEVELS, PROFILES AND CONTOURS. MAKE CHANGES IN GRADE GRADUAL.
BLEND SLOPES INTO LEVEL AREAS.
4. REMOVE DELETERIOUS MATERIALS, SUCH AS WEEDS, UNDESIRABLE PLANTS, AND
THEIR ROOTS. REMOVE CONTAMINATED SUBSOIL,
5. SCARIFY SUBSOIL TO A DEPTH OF 3 INCHES WHERE TOPSOIL MATERIAL IS TO BE
PLACED. REPEAT CULTIVATION IN AREAS WHERE EQUIPMENT USED FOR HAULING
AND SPREADING TOPSOIL HAS COMPACTED SUBSOIL.
6. PLACE TOPSOIL MATERIAL DURING DRY WEATHER AND ON DRY UNFROZEN
SUBGRADE 2 TO 3 WEEKS PRIOR TO SOWING SEED.
7. SPREAD TOPSOIL MATERIAL OVER AREA TO BE SEEDED. FINISHED THICKNESS OF
TOPSOIL MATERIAL SHALL BE 3 INCHES MINIMUM AFTER SETTLING AND NOMINAL
COMPACTION CAUSED BY SPREADING EQUIPMENT.
8. GRADE TO ELIMINATE ROUGH, LOW, OR SOFT AREAS, AND TO ENSURE POSITIVE
DRAINAGE.
9. RAKE TOPSOIL MATERIAL AND REMOVE ROOTS, VEGETABLE MATTER, ROCKS,
CLODS, AND OTHER NON -ORGANIC MATERIAL.
10. APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY LIME AT THE
RATE OF 2,000 LBS. /ACRE AND 10-10-10 GRADE FERTILIZER AT THE RATE OF 750
LBS. /ACRE MIX THOROUGHLY INTO UPPER 4 - 6 INCHES OF TOPSOIL. LIGHTLY
WATER TO AID THE DISSIPATION OF FERTILIZER AND LIME.
11. PREPARE SEEDBED TO A DEPTH OF 4 TO 6 INCHES. REMOVE LOOSE ROCKS,
ROOT.iAW Di TylER OBSTRUCTIONS SO THAT THEY WILL NOT INTERFERE WITH
THE ESTABLISHMENT AND MAINTENANCE OF VEGETATION.
12. TO AMEND SOIL, FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2000
LBS./ACRE GROUND AGRICULTURAL LIMESTONE AND 750 LBS./ACRE 10-10-10
FERTILIZER.
13. APPLY MULCH AT A RATE OF 4,000 LBS./ACRE STRAW. ANCHOR STRAW BY
TACKING WITH ASPHALT, NETTING, OR A MULCH ANCHORING TOOL. RE -FERTILIZE
IF GROWTH IS NOT FULLY ADEQUATE.
14. RESEED, RE -FERTILIZE, AND MULCH IMMEDIATELY FOLLOWING EROSION OR
OTHER DAMAGE.
15. LIGHTLY COMPACT SEEDED AREAS BY MEANS OF A ROLLER OR OTHER
APPROVED EQUIPMENT IMMEDIATELY AFTER SOWING.
16. DURING PERMANENT STABILIZATION, MULCH MUST COVER 80 % OF THE SOIL
SURFACE AT A MINIMUM AND MUST BE ANCHORED BY TACKING WITH ASPHALT,
NETTING, OR A MULCH ANCHORING TOOL.
17. REFERTILIZE IN THE SECOND YEAR UNLESS GROWTH IS FULLY ADEQUATE.
RESEED, REFERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY.
MAINTENANCE:
THE FOLLOWING ITEMS, AT A MINIMUM, SHALL BE PART OF ROUTINE MAINTENANCE
DURING CONSTRUCTION:
1. SEEDED AREAS SHALL BE INSPECTED REGULARLY TO ENSURE THAT A GOOD STAND
OF VEGETATION IS MAINTAINED. AREAS WITHOUT ESTABLISHED VEGETATION SHALL
BE FERTILIZED AND RESEEDED.
2. SEEDED AREAS WILL BE INSPECTED WITHIN 24 HOURS AFTER ANY STORM EVENT OF
GREATER THAN 0.5 INCHES OF RAIN PER 24 HOUR PERIOD.
3. GRASS SHALL BE MOWED ON A REGULAR BASIS. TYPICAL MINIMUM MOWING HEIGHT
SHALL BE 4 INCHES FOR WARM -SEASON TURF SPECIES AND 6 INCHES FOR
COOL -SEASON SPECIES.
4. SITE OBSERVATIONS SHOULD BE PERFORMED MONTHLY TO CHECK FOR THE
PRESENCE OF INVASIVE SPECIES. IF FOUND, INVASIVES SHOULD BE TREATED
IMMEDIATELY WITH APPROPRIATE CULTURAL PRACTICES AND/OR BY THE USE OF
SEASONALLY -APPROPRIATE AND SITE APPROPRIATE HERBICIDES.
SEEDING SCHEDULE
PROJECT: MINING PERMIT
HOOD CREEK SOILS CO.
LENOIR, NC
CLIENT:
HOOD CREEK SOILS CO.
*Long term stabilization using native crops should be based on a seeding mixture using between 4 - 6 HNA ENGINEERING
native seed species that have similar soil drainage adaptations (e.g. a mixture of Switchgrass, Big STn ESVILLE NC 2867lf
Bluestem, Sweet Woodreed and Indian Woodoats seeds can be applied at rates specified in the table \����\\%AlC ; R o COA#: SCALE:
above). Typical seed mixture should be in the range of 151bs./acre. z� o
FOR PERMITTING PURPOSES ONLY 030�0
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REV M/DD/V DESCRIPTION OWN BY APP BY
3 4 5 6 7
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PROJECT NO
DWG: MININGPERMIT
DATE: MAY 2021
SHEET NO.:
8 OF 10
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INLET SHALL BE PROTECTED
(AS NEEDED) FROM EROSION
ON RIPRAP T". •• ,^
OR EOUIVALE
POROUS BAFFLE (TYF
6" PVC W
c
n
TOP ELEVATION OF
PERSPECTIVE VIEW
GENERAL NOTES
18" FREEBOARD MIN.
CAP TOP OF 6" PVC PIPE TOP OF BERM
(USE 8" PIPE FOR DRAINAGES
GREATER THAN 10 ACRES)
xZ
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SECTION THRU BASIN & FILTER
1. DRAW DOWN RISER & BARREL SHALL BE 6" SCH. 40 PVC
WITH CLEAN -OUT CAP AND 3/4" HOLES. SEE NOTE i FOR
NUMBER AND SPACING OF HOLES.
2. THE TARP USED TO PROTECT THE WEIR SHALL BE THE
WIDTH SPECIFIED. THE LENGTH OF THE TARP SHALL BE
ACCORDING TO AVAILABLE SUPPLY, IF MULTIPLE TARPS ARE
TO BE USED, THEN TARPS SHALL BE OVERLAPPED AT LEAST
12 THE UPSTREAM 12" TARP SHALL OVERLAP THE
DOWNSTREAM TARP. THE TARP SHALL BE 50 MIL. HEAVY
DUTY SILVER TARPAULINS OR EQUIVALENT FOR U.Y.
RESISTANCE.
3. MAIINTENANCE: SEDIMENT TO BE REMOVED AND PROPERLY
DISPOSED OF WHEN BASIN IS HALF FULL. GRAVEL FILTER
AROUND RISER SHOULD BE REPLACED AS NEEDED TO ENSURE
DEWATERING.
TARP
EMBED
TARP 12"
6" PVC (NO
SLOTS)
L—#5 WASHED STONE FILTER TARP EXTENDS
TO TOP OF HOLES TOE OF BACK
SEE NOTE I
Rw wima SPECS
TARP PROTECTION
MIN
0' MIN
WEIR LENGTH
SECTION THRU WEIR
NOTE 1
DITCH AND BURY TARP
EDGE (MIN. 12")
HOLE SPECS:
DEWATERING HOLES WILL BE INSTALLED IN SETS OF HORIZONTAL RINGS.
THE FIRST SET OF HOLES WILL BE SET 6 INCHES FROM THE BOTTOM OF
THE RISER. RINGS WILL CONTINUE UP THE RISER IN INTERVALS OF 3
INCHES. HOLES WILL BE 3/4 INCH IN DIAMETER AND WILL BE SPACED
EQUALLY AROUND THE RISER. THE NUMBER OF HOLES PER RING WILL
EQUAL TO THE DRAINAGE AREA.
E BAS AIN DRAINING 2.0 ACRES SHOULD HAVE 2 HOLES PER RING EVERY
3 INCHES ON THE RISER PIPE. THE FIRST RING (2 HOLES) WILL BE SET
6 INCHES FROM THE BOTTOM OF THE RISER,
NOTE: ROUND DRAINAGE AREA TO THE NEAREST WHOLE NUMBER TO
DETERMINE NUMBER OF HOLES.
STANDARD CUSTOM BASIN
-Y
Y
PLAN VIEW
TARP
t' MIN FREEBOARD
BAFFLES
\(\S1T�D)
SKIMMER`
MIN
0' MIN
WEIR LENGTH
SECTION THRU WEIR
(�1�:171P
NOTES:
1. PROVIDE ALL CALCULATIONS FOR ORIFICE DESIGN.
2. PROVIDE ANTI -FLOTATION BLOCK CALCULATIONS.
CMP
RISER
PAINTED RED CLEANOUT MARK (PERFORATED)
LOCATED HALFWAY UP RISER PIPE
WATER LEVEL DURING STORM
TF SEDIMENT STORAGE
I .-AREA GRAVELFILTER 0<
II I-
ANTI -FLOTATION DEVICE
ANTI -SEEP COLLAR
CROSS SECTION
EMERGENCY SPILLWAY CONSTRUCTED OVER
UNDISTURBED GROUND AND ARMORED
WITH RIP RAP — —'
1
\ \ SEDIMENT TRAP -..
r DISSIPATER PAD
4 y RIP RAP
S N..v K
OUTLET PIPE
—'— - EARTH DAM
PLAN VIEW
TRASH RACK & ANTI -VORTEX DEVICE
TPOFDAM
— I ERGENCY SPILLWAY ELEVATION
o
o _— =
o.
O Oe. + .•� 7 MINIMUM SLOPES 2-1/2 1
T: --
EARTH DAM
CMP OUTLET PIPE
STANDARD RISER -BARREL SEDIMENT BASIN
DISSIPATER PAD RIP RAP
NOTES:
TOP OF DAM — 1 1. BAFFLE MATERIAL SHOULD BE SECURED AT THE BOTTOM AND SIDES
USING STAPLES OR BY TRENCHING AS FOR SILT FENCE.
2. MOST OF THE SEDIMENT WILL ACCUMULATE IN THE 1ST BAY,
WHICH SHOULD BE READILY ACCESSIBLE FOR MAINTENANCE.
'
70ITCHAND BURY TARP ' =' ! '! 3. PROVIDE 3 BAFFLES (USE TWO IF LESS THAN 20 FEET IN LENGTH). PROVIDE
EDGE (MIN. 12") bn ,'"m ff 5 BAFFLES FOR DRAINAGE AREAS GREATER THAN 10 ACRES.
i....,,," 4 4. BAFFLE SHALL BE 700 G/M2 COIR EROSION BLANKET.
INI F ZONE OU l l 1" ZO- E 5. TOPS OF BAFFLES SHOULD BE 2 INCHES LOWER THAN THE TOP OF THE BERMS
u ( 6. INSPECT BAFFLES FOR REPAIR ONCE A WEEK AND AFTER EACH RAINFALL
na�m sn I �r: ar„
! wutua u a
�I ICROSS SECTION
— —/ SUPPORT ROPE
TO WIRE TO SUPPORT POST
PREVENT 24" INTRO BOTTOM STAKE TO
SAGGING OR SIDE SUPPORT WIRE
DISSIPATER
PAD
RIP RAP
INLET SHALL BE CROSS SECTION CMP OUTLET PIPE
PROTECTED (AS NEEDED)
FROM EROSION WTH
RIPRAP, TARP, MATTING OR
EQUIVALENT.
NOTES:
1) BASIN SHOULD BE CLEANED OUT WHEN CAPACITY REACHES AN ELEVATION REPRESENTING THAT THE BASIN IS HALF -FULL.
2) THE TARP USED TO PROTECT THE WEIR SHALL BE THE WIDTH SPECIFIED. THE LENGTH OF THE TARP SHALL BE ACCORDING
TO AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED, THEN TARPS SHALL BE OVERLAPPED AT LEAST 12". THE
UPSTREAM 12" TARP SHALL OVERLAP THE DOWNSTREAM TARP. THE TARP SHALL BE 50 MIL. HEAVY DUTY SILVER TARPAULINS
OR EQUIVALENT FOR U.V. RESISTANCE.
3) PROVIDE A MINIMUM OF THREE POROUS BAFFLES TO EVENLY DISTRIBUTE FLOW ACROSS THE BASIN, REDUCING TURBULENCE.
4) BAFFLE MATERIAL MUST BE SECURED AT THE BOTTOM AND SIDES USING STAPLES OR BY TRENCHING AS FOR A SILT FENCE.
5) MOST OF THE SEDIMENT WILL ACCUMULATE IN THE FIRST 'BAY, '50 THIS SHOULD BE READILY AVAILABLE FOR MAINTENANCE.
6) DURING THE CONSTRUCTION PHASE OF THE PROJECT, PERMANENT STORMWATER RISER SHALL ONLY DEWATER FROM THE TOP OF PIPE.
7) POND SHALL NOT BE CONVERTED FOR STORMWATER USE UNTIL APPROVED BY ENVIRONMENTAL ENGINEER.
STANDARD SKIMMER BASIN
2
0
5
PLAN VIEW
FENCE AND FABRIC
BURIED IN TRENCH
6"X6" TRENCH,
BACKFILLED AND
COMPACTED
REV
STEEL POST
SECTION VIEW AT OPENING
STANDARD BAFFLES DETAIL
FOR PERMITTING PURPOSES ONLY
DESCRIPTION
6
OWN BY 1 APP BY
COIR MESH OR SIMILAR, STAPLED OR
TRENCHED INTO BOTTOM OR SIDE
DETAILS
PROJECT: MINING PERMIT
HOOD CREEK SOILS CO.
LENOIR, NC
CLIENT:
HOOD CREEK SOILS CO.
M WALNUT ST. HNA ENGINEERING
;TATESVILLE NC 28677
SCALE:
7.
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�i1'O.4.G I N E+E4�� ENGINEERING
7
51
PROJECT NO
DWG: MININGPERMIT
DATE: MAY 2021
SHEET NO.:
9 OF 10
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1, TEMPORARY DIVERSION DITCH TO BE USED TO INTERCEPT FLOW AND/OR DIVERT TO A SEDIMENT CONTROL MEASURE OR BMP.
2. SILT SHALL BE REMOVED WHEN DITCH IS ONE—HALF FULL.
3. DITCH SHALL BE RECONSTRUCTED WHEN DAMAGED BY EQUIPMENT OR COVERED BY FILL.
4. STABILIZE DIVERSION DITCH BERM WITH TEMPORARY SEEDING, MULCH WITH TAC, AND/OR EROSION CONTROL NETTING,
11— WASTE MATERIAL —COMPACT
SEED & MULCH AFTER
C< S 0'
VAR,
2' CONSTRUCTION OF DITCH
- 1
VAR
.III II—
CROSS SECTIONAL VIEW
STANDARD TEMPORARY DIVERSION DITCH
MINIMUM 10
LINE WIRES
NOTE:
1. USE SILT FENCE ONLY WHEN DRAINAGE AREA
DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW.
2. REMOVE SEDIMENT DEPOSITED AS NEEDED TO
PROVIDE STORAGE VOLUME FOR THE NEXT RAIN
AND TO REMOVE PRESSURE ON THE SILT FENCE.
50' MIN.
NOTES'
1. PUT SILT FENCE OR TREE PROTECTION FENCE UP TO
BUT SUFFICIENT TO KEEP
SEDIMENT ON SITE
ENSURE CONSTRUCTION ENTRANCE IS USED.
2. IF CONSTRUCTION ON THE SITES ARE SUCH THAT THE MUD
.. '." ` r..
IS NOT REMOVED BY THE VEHICLE TRAVELING OVER THE
.:..
STONE, THEN THE TIRES OF THE VEHICLES MUST BE WASHED
•= 2"-3" STONE TO BE USED''••:''`.
25' OR WIDTH OF BEFORE ENTERING THE PUBLIC ROAD,
EXISTING
(SURGE STONE OR RAILROAD',"
PROPOSED STREET,
ROADWAY
-: BALLAST)':•;.;"t:; " •.;'.;;:;.;'r:::; .;' :..
WHICHEVER IS 3. MAINTAIN GRAVEL PAD IN A CONDITION TO PREVENT MUD OR
GREATER. SEDIMENT FROM LEAVING CONSTRUCTION SITE. ENTRANCE
'; ':
WILL REQUIRE PERIODIC REMOVAL OF SEDIMENT —LADEN
STONE AND REPLACEMENT WITH FRESH STONE.
PLAN VIEW
� FABRIC UNDER STONE
CROSS SECTION
NEW CONSTRUCTION --�
STANDARD CONSTRUCTION ENTRANCE
1 I �
3
12" MIN.
e'-o' unm�uw
IMUM 12-1/2 GAUGE
RMEDIATE WIRES
GRADE
FRONT VIEW —
STEEL POST
WOVEN WIRE FABRIC
SILT FENCE FABRIC
b
z
�
r
3 FILL SLOPE
n
ADE
`''8" MINIMUM COVER
OVER SKIRT "
ANCHOR SKIRT AS DIRECTED
BY ENGINEER
STANDARD TEMPORARY SILT FENCE
r
d
W
00 2/3 W� _
d _ r
j11=TTT_� 4" to 12"
:r",=I I I ICI
FILTER FABRIC OR
GRAVEL BEDDING
WATERWAY WITH STONE CENTER DRAIN
SHAPED BY BULLDOZER)
18" W
6"
—I i I I MITI-
d
=11= 4„ to 12„
=11i=j.rz--FILTER FABRIC OR
= I It � I GRAVEL BEDDING
V-SHAPED WATERWAY WITH STONE CENTER DRAIN
(SHAPED BY MOTOR GRADER)
4i
W
THE LENGTH OF THE RIPRAP APRON.
2. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT
LESS THAN 6" (INCHES).
3. IN A WELL—DEFINED CHANNEL EXTEND THE APRON UP THE
CHANNEL BANKS TO AN ELEVATION OF 6" (INCHES) ABOVE
THE MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE
BANK, WHICHEVER IS LESS.
4. A FILTER BLANKET OR FILTER FABRIC SHOULD BE
INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
SECTION 'A=A' FABRIC
STANDARD PIPE OUTLET TO WELL-DEFINED CHANNEL
TYPICAL RIP RAP CHANNEL
GRAVEL BEDDING
TRAPEZOIDAL
NOTES
OUTLET END: CONNECTION
TO OUTLET PIPE OR RISER
—TO BE USED WHERE EXCESSIVE STORMWATER
VELOCITIES PROHIBIT VEGETATIVE LININGS.
—SIZE OF STONE MUST BE DETERMINED BY
APPROPRIATE DESIGN PROCEDURE.
—DIMENSIONS FOR d & W VARIES ACCORDING
TO DESIGN.
STANDARD RIP -RAP LINED CHANNELS
REV
FOR PERMITTI
STANDARD SKIMMER DETAIL
""`m DETAILS
PROJECT: MINING PERMIT
HOOD CREEK SOILS CO.
LENOIR, NC
CLIENT:
HOOD CREEK SOILS CO.
208 WALNUT ST. HNA ENGINEERING
STATESVILLE N 28877
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PROJECT NO
DWG: MININGPERMIT
DATE: MAY 2021
SHEET NO.: /�
10 OF 10
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