20220518_ESC_Plan

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INITIAL EROSION CONTROL PLAN
PROJECT ADDRESS
CATAWBA VALLEY BLVD SE, SR-1170
APPROX 0.38 MILES WEST FROM SR-1146 AND SR-1170 INTERSECTION
HICKORY, NC 28602
PROPERTY OWNER
HUFFMAN EQUIPMENT LEASING LLC
2608 SPRINGS RD NE
HICKORY, NC 28601-3170
PROJECT CONTACT
DOUG HUFFMAN
HUFFMAN GRADING CO, INC
2608 SPRINGS RD NE
HICKORY, NC 28601
PROJECT ENGINEER
SCOTT BURWELL, PE
55 BROAD STREET
ASHEVILLE, NC 28801
828.252.0575
01 at N I
NORTH C
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10
JANUARY 2022
SCHEDULE OF DRAWINGS
G-001 .... COVER SHEET
G-002 ... GENERAL NOTES AND LEGENDS
G-003 . GENERAL NOTES AND LEGENDS
CE-101 .... EXISTING CONDITIONS PLAN
C-101 .... OVERALL INITIAL EROSION CONTROL PLAN
C-102 .. INITIAL EROSION CONTROL PLAN AREA 1
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C-103 ..... INITIAL EROSION CONTROL PLAN AREA 2
C-104 ..... INITIAL EROSION CONTROL PLAN AREA 3
C-501 ..... MISCELLANEOUS DETAILS
C-502 MISCELLANEOUS DETAILS
C-503 .. MISCELLANEOUS DETAILS
CATAWBA COUNTY
EROSION CONTROL
❑ Appp-mved
0--Approved with modifications
❑ Disapproved
By
ENINEER
Date
7
C
11

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TEMPORARY SEEDING SPECIFICATION
SEEDING MIXTURE:
SPECIES RATE (lb/acre)
RYE (grain) 120
SEEDING DATES:
AUG 15 TO DEC 30
SOIL AMENDMENTS:
FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY
2000 Iyac GROUND AGRICULTURAL LIMESTONE AND
750 lb ac 10-10-10 FERTILIZER.
MULCH:
APPLY 40001b/ac STRAW. ANCHOR STRAW BY TACKING
w/ ASPHALT, NETTING, OR A MULCH ANCHORING TOOL.
A DISK w/ BLADES SER NEARLY STRAIGHT CAN BE USED
AS A MULCH ANCHORING TOOL.
MAINTENANCE:
RE —FERTILIZE IF GROWTH IS NOT FULLY ADEQUATE, RE —SEED,
RE —FERTILIZE AND MULCH IMMEDIATELY FOLLOWING EROSION
OR OTHER DAMAGE.
/MLL SLOPES SEEDING SPECIFICATIONS — STEEPER THAN 3:1
SEEDING MIXTURE:
SPECIES RATE (lb/acre)
TALL FESCUE 100
SWITCHGRASS AND PARTRIDGE PEA MIX 30
KOBE LESPENDEZA 10
NURSE PLANTS:
BETWEEN MAY 1 AND AUG 15, ADD 101b/ac GERMAN MILLET
OR 15 Ib/ac SUDANGRASS. PRIOR TO MAY 1 OR AFTER AUG 15,
ADD 40 Ib/ac RYE (GRAIN). IT MAY BE BENEFICIAL TO PLANT THE
GRASSES IN LATE SUMMER AND OVERSEED THE LESPENDEZAS
IN MARCH.
SEEDING DATES:
BEST POSSIBLE
AUG 25 — SEPT 15 AUG 20 — OCT 25
FEB 15 — MAR 20 FEB 1 — APRIL 15
SOIL AMENDMENTS:
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TEST, OR
APPLY 4000 Ib/ac GROUND AGRICULTURAL LIMESTONE AND
750 Ib/ac 10-10-10 FERTILIZER.
MULCH:
APPLY 4000 Ib/ac GRAIN STRAW OR EQUIVALENT COVER OF
ANOTHER SUITABLE MULCHING MATERIAL, ANCHOR MULCH BY
TACKING w/ ASPHALT, ROVING OR NETTING, NETTING IS THE
PREFERRED ANCHORING METHOD ON STEEP SLOPES.
MAINTENANCE:
MOW NO MORE THAN ONCE A YEAR, RE —FERTILIZE IN THE
SECOND YEAR UNLESS GROWTH IS FULLY ADEQUATE.
RE —SEED, RE —FERTILIZE, RE —MULCH DAMAGED AREAS IMMEDIATELY.
DITCH4PEN AREA PERMANENT SEEDING SPECIounON
SEEDING MIXTURE:
SPECIES RATE (Ib/ac)
TALL FESCUE 250 (6 Ib/1000 sq ft)
NURSE PLANTS:
BETWEEN MAY 1 AND AU 15, ADD 10 Ib/ac GERMAN MILLET
OR 15 Ib/ac SUDANGRASS PRIOR TO MAY 1 OR AFTER AUG 15,
ADD 40 Ib/ac RYE (GRAIN.
SOIL AMENDMENTS:
APPLY LIME AND FERTILIZE ACCORDING TO SOIL TEST, OR APPLY
4000 Ib/ac GROUND AGRICULTURAL LIMESTONE AND 750 Ib/ac
10-10-10 FERTILIZER.
MULCH:
USE CHANNEL LINING MATERIAL TO COVER THE BOTTOM OF DITCHES.
THE LINING SHOULD EXTEND ABOVE THE HIGHEST CALCULATED DEPTH
OF FLOW. ON CHANNEL SIDE SLOPES ABOVE THE HEIGHT, AND IN
NPDES GROUND COVER STABILIZATION TABLE DRAINAGES NOT REQUIRING TEMPORARY LININGS, APPLY 4000 Ib/ac
GRAIN STRAW AND ANCHOR STRAW BY STAPLING NETTING OVER THE TOP.
MAJOR ELEMENTS OF DWQ CONSTRUCTION GENERAL PERMIT MULCH AND ANCHORING MATERIALS MUST NOT BE ALLOWED TO WASH
THIS DOCUMENT CONTAINS THE MAJOR ELEMENTS OF THE RECENTLY -REVISED NORTH CAROLINA DIVISION OF WATER QUALITY (DWQ) CONSTRUCTION GENERAL DOWN SLOPE WHERE THEY CAN CLOG DRAINAGE DEVICES.
PERMIT (NCG01) WITH EMPHASIS PLACED ON THOSE ELEMENTS THAT DIFFER FROM THE PREVIOUS PERMIT (EXPIRATION ON AUGUST 02, 2011). SINCE THE MAINTENANCE:
SUMMARY LIST BELOW CANNOT CONTAIN EVERY CHANGE, THE COMPLETE PERMIT SHOULD BE USED TO ASSURE FULL IMPLEMENTATION.
SEE : http://portal.ncdonr.org/web/wq/ws/su.construction INSPECT AND REPAIR MULCH FREQUENTLY. RE -FERTILIZE IN LATE WINTER
ACCORDING TO SOIL TESTS OR APPLY 150 Ib/ac 10-10-10 FERTILIZER
1) GROUND STABILIZATION * (3 Ib/1000 sq ft). MOW REGULARLY TO A HEIGHT OF 2" TO 4".
SITE AREA
DESCRIPTION
STABILIZATION
TIMEFRAME
STABILIZATION
TIMEFRAME EXCEPTIONS
PERIMETER DIKES, SWALES
7 DAYS
NONE
DITCHES AND SLOPES
HIGH QUALITY WATER
7 DAYS
NONE
(HQW) ZONES
SLOPES STEEPER THAN 3:1
7 DAYS
IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE
NOT STEEPER THAN 2:1. 14 DAYS ARE ALLOWED
7-DAYS FOR SLOPES GREATER
SLOPES 3:1 OR FLATTER
14 DAYS
THAN 50 FEET IN LENGTH
ALL OTHER AREAS WITH
14 DAYS
NONE (EXCEPT FOR PERIMETERS
SLOPES FLATTER THAN 4:1
AND HQW ZONES)
* "EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED ON
WEATHER OR OTHER SITE -SPECIFIC CONDITIONS THAT MAKE COMPLIANCE IMPRACTICABLE."
(SECTION I13(2)(b))
2) BUILDING WASTES HANDLING
NO PAINT OR LIQUID WASTES IN STREAM OR STORM DRAIN
DEDICATED AREAS FOR DEMOLITION, CONSTRUCTION AND OTHER WASTES MUST BE LOCATED
50' FROM STORM DRAINS AND STREAMS UNLESS NO REASONABLE ALTERNATIVES AVAILABLE.
EARTHEN-MATERAIL STOCKPILES MUST BE LOCATED 50' FROM STORM
AND STREAMS UNLESS NO REASONABLE ALTERNATIVES AVAILABLE.
CONCRETE MATERIALS MUST BE CONTROLLED TO AVOID
CONTACT WITH SURFACE WATERS, WETLANDS, OR BUFFERS
3) DISCHARGES TO FEDERALLY —LISTED WATERS
REQUIREMENTS ARE SAME AS IN THE PREVIOUS PERMIT.
THE PERMIT ALLOWS REDUCTION FROM THE 20 ACRE MINIMUM IF THE DIRECTOR
OF DWQ DETERMINES THAT OTHER BMP'S PROVIDED EQUIVALENT PROTECTION.
THE MAJOR CHANGE IN THE PERMIT FROM THE PREVIOUS ONE IS THE SHORTER TIMES TO APPLY GROUND
STABILIZATION SUCH AS MUCH, WHEAT STRAW, OR GRASSES. THE NC RULES AND LAWS RELATING TO THE
SEDIMENT ACT REQUIRE, IN MOST PLACES, GROUND STABILIZATION WITHIN 21 DAYS. BASED ON THE NEW 6) CONDITIONS IN EROSION & SEDIMENT CONTROL PLANS
EPA REQUIREMENTS AND 9-MONTHS' WORK WITH A PERMIT ADVISORY GROUP, CTAG, THE DIVISION AND
EPA -DEVELOPED PERMIT, NOW CONTAINS REQUIREMENTS FOR GROUND COVER WITHIN 14, AND IN SOME
PLACES, 7 DAYS.
4) INSPECTIONS
• SOME WEEKLY INSPECTION REQUIREMENTS
• SOME RAIN GAUGE AND INSPECTION AFTER 0.5" RAIN EVENT
* INSPECTIONS ARE ONLY REQUIRED DURING "NORMAL BUSINESS HOURS"
INSPECTION REPORTS MUST BE AVAILABLE ON -SITE DURING BUSINESS
HOURS UNLESS A SITE -SPECIFIC EXEMPTION IS APPROVED.
RECORDS MUST BE KEPT FOR 3 YEARS AND AVAILABLE UPON REQUEST.
ELECTRONICALLY -AVAILABLE RECORDS MAY BE SUBSTITUTED UNDER
CERTAIN CONDITIONS.
5) IMPLEMENTATION OF NEW PERMIT CONDITIONS
PROJECTS PERMITTED UNDER THE PREVIOUS PERMIT CAN CONTINUE
TO FOLLOW THE PREVIOUSLY -PERMITTED CONDITIONS.
COMPLETE APPLICATIONS RECEIVED PRIOR TO AUGUST 03, 2011 CAN
FOLLOW CONDITIONS OF APPROVED APPLICATION.
APPLICATIONS RECEIVED AFTER AUGUST 02, 2011 MUST COMPLY
' WITH NEW PERMIT CONDITIONS.
SIGNED AND DATED:
CIA R �,,
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2022.02.24
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THIS DOCUMENT HAS BEEN DIGITALLY
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SEAL
SIGNED AND SEALED IN ACCORDANCE
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WITH THE STANDARD CERTIFICATION
REQUIREMENTS FOUND IN NC
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ADMINISTRATIVE CODE 21-56.1103(E).
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THIS I BIYATHE IGNC BOARDNATURE HAS BEEN
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FOUND
EXAMINERS FOR ENGINEERS AND
�,EiIB�\���
SURVEYORS TO MEET THESE
STANDARDS. PLEASE CONTACT THE
DESIGNATION ON THE PLANS WHERE THE 7 AND 14 DAY GROUND
STABILIZATION REQUIREMENTS OF THE NPDES PERMIT APPLY
DESIGNATION ON THE PLANS WHERE BASIN THAT COMPLY WITH THE
SURFACE-WITHDRAWL REQUIREMENTS OF THE NPDES PERMIT ARE LOCATED.
* IN ORDER FOR THE E&SC PLAN TO SATISFY THE CONDITIONS OF THE CONSTRUCTION GENERAL PERMIT,
IT MUST IDENTIFY AREAS WHERE THE GROUND STABILIZATION REQUIREMENTS APPLY AND THE LOCATION
OF THE BASINS WHERE THE SURFACE -WITHDRAWAL REQUIREMENTS APPLY.
7) BUILDING WASTES HANDLING
• NO PAINT OR LIQUID WASTES IN STREAM OR STORM DRAINS
DEDICATED AREAS FOR DEMOLITION, CONSTRUCTION AND OTHER WASTES LOCATED 50'
FROM STORM DRAINS AND STREAMS UNLESS NO REASONABLE ALTERNATIVES AVAILABLE.
EARTHEN -MATERIAL STOCKPILES LOCATED 50' FROM STORM
AND STREAMS UNLESS NO REASONABLE ALTERNATIVES AVAILABLE.
CONCRETE MATERIALS MUST BE CONTROLLED TO AVOID
CONTACT WITH SURFACE WATERS, WETLANDS, OR BUFFERS
8) SEDIMENT BASINS
OUTLET STRUCTURES MUST WITHDRAW FROM BASIN SURFACE UNLESS
DRAINAGE AREA IS LESS THAN 1 ACRE.
• USE ONLY DWQ-APPROVED FLOCCULANTS.
1
2/24/22
NS
EC REVIEW COMMENTS
NO.
DATE
BY
DESCRIPTION
EXISTING CONDITIONS LEGEND z z
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UNDERGROUND CABLE TV SIGN
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UNDERGROUND FIBER OPTIC CABLE SIGN
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UNDERGROUND ELECTRIC LINE SIGN
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GUY WIRE ANCHOR
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TRAFFIC SIGNAL POLE
OCP/TEMP CONTROL POINT TEMPORARY MARK a
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RAILROAD CROSSING SIGNAL
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® NGS CM NATIONAL GEODETIC SURVEY CONCRETE MONUMENT
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SANITARY SEWER MANHOLE
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G)COMMH
COMMUNICATION MANHOLE
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ELECTRICAL MANHOLE
ASTAKE STAKE FOUND p
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JUNCTION BOX
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66 U.S. HIGHWAY
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SEWER CLEAN -OUT
ELEVATION FINISHED FLOOR ELEVATION 0
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ELECTRIC SERVICE STUB -OUT
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BLOW OFF VALVE
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GAS METER
❑PB POSTAL DROP BOX
b G/V
GAS VALVE
LSAT DISH SATELLITE DISH
Pa ICV
IRRIGATION CONTROL VALVE
OYARD ORNAMENT STATUE, BIRD BATHS, ETC.
Pa PIV
POST INDICATOR VALVE
TREES
® E.JUNC
ELECTRIC JUNCTION BOX OR OUTLET
0 SHRUBS / BUSHES
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Box
TRAFFIC SIGNAL BOX
(H) HORIZONTAL GROUND DISTANCE
(G) NC STATE PLANE GRID DISTANCE
CULVERT
x x x
FENCE
SILT FENCE
-o-o-o-o-o-o-o-o-vo-o-o-o-o-
GUARD RAIL
-----S-----S
APPROXIMATE LOCATION OF
EXISTING SEWER LINES
— - - - - w- - - - - W—
APPROXIMATE LOCATION OF
EXISTING WATER LINES
------G-----G
APPROXIMATE LOCATION OF
EXISTING GAS LINES
TOP OF SLOPE
I I I I I I I I I I I I I I I I I I I I I
TOE OF SLOPE
----DL-----DL-----DL--
DITCH LINES
- - - - - CTV- - - - - CTV-
APPROXIMATE LOCATION OF
UNDERGROUND CABLE TV LINE
CT
APPROXIMATE LOCATION OF
OVERHEAD CABLE TV LINE
-----FOC -----FOC -
APPROXIMATE LOCATION OF
UNDERGROUND FIBER OPTIC CABLE LINE
_----E---- -E—
APPROXIMATE LOCATION OF
UNDERGROUND ELECTRIC LINE
E E
APPROXIMATE LOCATION OF
OVERHEAD ELECTRIC LINE
- - - - - T— - - - - T
APPROXIMATE LOCATION OF
UNDERGROUND TELEPHONE LINES
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APPROXIMATE LOCATION OF
T
OVERHEAD TELEPHONE LINES
----- -ROW ----- ROW -
RIGHT-OF-WAY
TREELINE
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SHRUBLINE
-- - - - -
PROPERTY LINE NOT SURVEYED
ROCKLINE
— — — —
STREAM LINE
— - - - - - —
CENTERLINE
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CENTERLINE VARIANT
— — — —
SWAM PLINE/WETLANIDS
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APPROXIMATE LOCATION OF
OVERHEAD UTILITY LINE
IPS
IRON PIN SET
CMU CONCRETE MASONRY UNIT
RBF
REBAR FOUND
CPP CORRUGATED PLASTIC PIPE
OTIPF
OPEN TOP IRON PIN FOUND
DIP DUCTILE IRON PIPE
CTIPF
CRIMPED TOP IRON PIN FOUND
E&T ELECTRIC & TELEPHONE
CMU
CONCRETE MASONRY UNIT
FOC FIBER OPTIC CABLE
R/W
RIGHT OF WAY
GIP GALVANIZED IRON PIPE
CENTERLINE
O/H OVERHEAD
RCP REINFORCED CONCRETE PIPE
C
CURVE (SEE CURVE TABLE)
U/G UNDERGROUND
POB
POINT OF BEGINNING
VCP VITRIFIED CLAY PIPE
CID
CALCULATED POINT
PVC POLYVINYL CHLORIDE PIPE
PB
PLAT BOOK
FFE FINISHED FLOOR ELEVATION
DB
DEED BOOK
PG PAGE
L
LINE (SEE LINE TABLE)
REF REFERENCE
BLDG
BUILDING
DOT DEPARTMENT OF TRANSPORTATION
NGS NATIONAL GEODETIC SYRVEY
CIP
CAST IRON PIPE
NCSP NORTH CAROLINA STATE PLANE
CMP
CORRUGATED METAL PIPE
MTR BOX METER BOX
CONC
CONCRETE
HUFFMAN PROPERTY SUBDIVISION SHEET
INITIAL EROSION CONTROL PLAN NOT TO SCALE
GENERAL NOTES AND LEGENDS
HUFFMAN GRADING Co INC OFFICE MANAGER DESIGNER G=002
I W CATHEY N. CROOM
CITY OF HICKORY, NORTH CAROLINA PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
S. BURWELL N. SAWYER JANUARY 2022 21.00138 N/A

1. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CHECKED FOR STABILITY AND OPERATION
FOLLOWING EVERY RUNOFF -PRODUCING RAINFALL BUT IN NO CASE NOT LESS THAN ONCE EVERY WEEK.
ANY NEEDED REPAIRS SHALL BE MADE IMMEDIATELY TO MAINTAIN ALL PRACTICES AS DESIGNED.
S IME T B REMOVED FROM THE BASIN WHEN SEDIMENT ACCUMULATES
2. ED N SHALL E R M S TES TO ONE-HALF THE
HEIGHT OF THE FIRST BAFFLE. CLEAN OUT AND RESHAPE BASIN BACK TO ITS` ORIGINAL DIMENSIONS.
REPAIR ANY DAMAGED BAFFLES. SKIMMERS SHALL BE CHECKED FOR CLOGGINQ AND CLEANED OUT.
C GENERAL EROSION CONTROL NOTES
3.SEDIMENT SHALL BE REMOVED FROM BEHIND THE SILT AND SUPER SILT FENCE WHEN IT BECOMES
ABOUT ONE-HALF THE HEIGHT OF THE SILT FENCE. THE SILT AND SUPER SILT FENCE SHALL BE
�� UPDATED MARCH, 2017
REPAIRED AS NECESSARY TO MAINTAIN A BARRIER.
4.INSPECT TEMPORARY AND PERMANENT DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL.
IMMEDIATELY REMOVE SEDIMENT FROM THE: FLOW AREA AND REPAIR THE DIVERSION RIDGE. CAREFULLY
CHECK OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED. WHEN THE AREA PROTECTED IS
PERMANENTLY STABILIZED, REMOVE THE RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL
GROUND LEVEL AND APPROPRIATELY STABILIZE IT.
1. FINISH GRADE TOLERANCES SHALL BE AS NOTED IN THE SPECIFICATIONS. THE ENGINEER MAY
MAKE GRADE CHANGES AS REQUIRED IN THE FIELD WITHOUT EFFECTING THE UNIT BID PRICE
5.INSPECT INLET PROTECTION AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (}¢ INCH OR GREATER)
FOR UNCLASSIFIED EXCAVATION.
RAINFALL EVENT. CLEAR THE MESH WARE OF ANY DEBRIS OR OTHER OBJECTS TO PROVIDE ADEQUATE
FLOW FOR SUBSEQUENT RAINS. TAKE CARE NOT TO DAMAGE OR UNDERCUT THE WIRE MESH DURING
2. UNLESS OTHERWISE STATED, ALL FILL AREAS SHALL BE CONSTRUCTED IN LAYERS OF 8" MAXIMUM
SEDIMENT REMOVAL. REPLACE STONE AS NEEDED.
THICKNESS, WITH WATER ADDED OR SOIL CONDITIONED TO THE OPTIMUM MOISTURE CONTENT AS
6.INSPECT ROCK PIPE INLET PROTECTION AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (% INCH OR
DETERMINED BY THE ENGINEER AND COMPACTED WITH A SHEEP'S FOOT ROLLER TO A COMPACTION
GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT AND RESTORE THE SEDIMENT
EQUAL TO OR GREATER THAN 95% (100% IN THE TOP 2' OF THE SUB GRADE BELOW ROADWAYS AND
STORAGE AREA TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF
PARKING LOTS) OF THE DENSITY OBTAINED BY COMPACTING A SAMPLE OF THE MATERIAL IN
THE DESIGN DEPTH OF THE TRAP. PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED
ACCORDANCE WITH THE STANDARD PROCTOR METHOD OF MOISTURE -DENSITY RELATIONSHIP TEST,
DISPOSAL AREA AND REPLACE THE CONTAMINATED PART OF THE GRAVEL FACING. CHECK THE
STRUCTURE FOR DAMAGE. ANY RIPRAP DISPLACED FROM THE STONE HORSESHOE MUST BE REPLACED
ASTM 0698 OR AASHTO-99 UNLESS SPECIFIED IN OTHER SPECIFICATIONS.
IMMEDIATELY.
3. ENTIRE AREA TO BE GRADED SHALL BE CLEARED AND GRUBBED. NO FILL SHALL BE PLACED ON
7.ALL SEEDED AREAS SHALL BE FERTILIZED, RESEEDED AS NECESSARY AND MULCHED ACCORDING TO
ANY AREA NOT CLEARED AND GRUBBED.
SPECIFICATIONS IN THE SEEDING SPECIFICATION TO MAINTAIN A VIGOROUS AND DENSE VEGETATIVE
COVER.
4. ALL SOIL EROSION CONTROL MEASURES REQUIRED BY THE GRADING PLAN SHALL BE PERFORMED
&MAINTAIN ALL MATTING THAT HAS BEEN PLACED ON SLOPES AND IN DITCHES. CHECK FOR GOOD
PRIOR TO GRADING, CLEARING OR GRUBBING. ALL EROSION CONTROL DEVICES SUCH AS SILT
GROUND CONTACT AND FOR THE OCCURRENCE OF ANY EROSION UNDER THE MATTING. MONITOR AND
FENCES, ETC., SHALL BE MAINTAINED IN WORKABLE CONDITION FOR THE LIFE OF THE PROJECT
REPAIR OR REPLACE AS NECESSARY.
AND SHALL BE REMOVED AT THE COMPLETION OF THE PROJECT ONLY ON THE ENGINEER'S
APPROVAL. PAYMENT SHALL BE CONSIDERED INCIDENTAL TO CLEARING AND GRUBBING. IF DURING
9.THE CONTRACTOR SHALL MAINTAIN SELF INSPECTION REPORTS AS REQUIRED BY NCDEQ AND THE
THE LIFE OF THE PROJECT, A STORM CAUSES SOIL EROSION WHICH CHANGES FINISH GRADES OR
NPDES CONSTRUCTION STORMWATER PERMIT. SELF -INSPECTIONS ARE TO BE CONDUCTED AFTER EACH
PHASE OF THE PROJECT FOR THE RECORD OF THE INSTALLATION AND MAINTENANCE OF THE EROSION
" "
CREATES GULLIES AND WASHED AREAS". THESE SHALL BE REPAIRED AT NO EXTRA COST, AND
CONTROL MEASURES. FOR DOCUMENTATION OF SELF -INSPECTION REPORTS AND NPDES
ALL SILT WASHED OFF OF THE PROJECT SITE ONTO ADJACENT PROPERTY SHALL BE REMOVED AS
SELF -MONITORING REPORTS, DWQ AND DEMLR DEVELOPED A COMBINED FORM. THE SELF -INSPECTION
DIRECTED BY THE ENGINEER AT NO EXTRA COST. THE CONTRACTOR SHALL ADHERE TO ANY
PROGRAM IS SEPARATE FROM THE WEEKLY SELF -MONITORING PROGRAM OF THE NPDES STORMWATER
APPROVED EROSION CONTROL PLANS WHETHER INDICATED IN THE CONSTRUCTION PLANS OR UNDER
PERMIT FOR CONSTRUCTION ACTIVITIES. THE FOCUS OF THE SELF -INSPECTION REPORT IS THE
SEPARATE COVER.
INSTALLATION AND MAINTENANCE OF EROSION AND SEDIMENTATION CONTROL MEASURES ACCORDING TO
THE APPROVED PLAN. THE INSPECTIONS SHOULD BE CONDUCTED AFTER EACH PHASE OF THE
5. DISPOSABLE MATERIAL
PROJECT, AND CONTINUED UNTIL PERMANENT GROUND COVER IS ESTABLISHED. THE FORM CAN BE
ACCESSED AT: HTTPS://DEQ.NC.GOV/ABOUT/DIVISIONS/ENERGY-MINERAL-LAND-RESOURCES/
A. CLEARING AND GRUBBING WASTES SHALL BE REMOVED FROM THE SITE AND PROPERLY
EROSION-SEDIMENT-CONTROL/FORMS
DISPOSED OF BY THE CONTRACTOR AT HIS EXPENSE, UNLESS SPECIFIED OTHERWISE.
B. SOUD WSTES TO BE PLACED IN SPECIFIC DSPOSALDAREAS DELINEATED, SUCH ASLKSON THE PLANS OR, CURBS,EREMOVED FROM THE
EC MAINTENANCE PLAN
SITE AS REQUIRED BY THE SPECIFICATIONS. THIS MATERIAL SHALL HAVE A MINIMUM COVER
OF 2'. THE CONTRACTOR SHALL MAINTAIN SPECIFIED COMPACTION REQUIREMENTS IN THESE
UPDATED JANUARY 2022
AREAS. WHEN DISPOSAL SITES ARE NOT PROVIDED, THE CONTRACTOR SHALL REMOVE THIS
WASTE FROM THE SITE AND PROPERLY DISPOSE OF IT AT HIS EXPENSE.
C. ABANDONED UTILITIES SUCH AS CULVERTS, WATER PIPE, HYDRANTS, CASTINGS, PIPE
APPURTENANCES, UTILITY POLES, ETC., SHALL BE THE PROPERTY OF THE SPECIFIC UTILITY
AGENCY, OR COMPANY HAVING JURISDICTION. BEFORE THE CONTRACTOR CAN REMOVE,
1. OBTAIN THE EROSION CONTROL PERMIT FROM CATAWBA COUNTY.
DESTROY, SALVAGE, REUSE, SELL OR STORE FOR HIS OWN USE ANY ABANDONED UTILITY,
HE MUST PRESENT TO THE OWNER WRITTEN PERMISSION FROM THE UTILITY INVOLVED.
2.PRIOR TO BEGINNING WORK ON THE PROJECT, THE CONTRACTOR SHALL OBTAIN FROM THE OWNER AND
KEEP AT THE JOB SITE THE FOLLOWING:
D. ON SITE BURNING IS AN ACCEPTABLE METHOD OF DISPOSING OF FLAMMABLE WASTES. WHEN
a.0 POSTED COPY OF THE EROSION AND SEDIMENT CONTROL APPROVAL" ISSUED BY CATAWBA
BURNING IS ANTICIPATED, THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL
COUNTY.
NECESSARY PERMITS AND MEETING GOVERNING CODES. THE CONTRACTOR SHALL NOTIFY
b.A CERTIFICATE OF COVERAGE (COC) ISSUED BY NCDEQ FOR COVERAGE UNDER THE NCGO1
THE ENGINEER OR HIS REPRESENTATIVE AS TO THE SPECIFIC LOCATION OF BURNING.
CONSTRUCTION STORMWATER GENERAL PERMIT, AND A COPY OF THE NCG01 GENERAL PERMIT.
c.A COPY OF THE APPROVED PLANS.
AFTER BURNING IS COMPLETED, PURE ASH MAY BE DISPOSED OF BY MIXING WITH FILL
3.CONTACT THE CATAWBA COUNTY EROSION AND SEDIMENTATION CONTROL OFFICE AT [phone]
DIRT. ALL MATERIAL NOT TOTALLY BURNED SHALL BE DISPOSED OF AS SPECIFIED IN "B"
FOR APRE-CONSTRUCTION MEETING.
ABOVE. THE CONTRACTOR SHALL NOT HOLD UP WORK PROGRESS FOR THE PURPOSE OF
4.FLAG WORK LIMITS BEFORE CONSTRUCTION ACTIVITY BEGINS.
WAITING FOR A "BURNING DAY".
5.THE CONTRACTOR SHALL BE RESPONSIBLE FOR KEEPING ALL RECORDS REQUIRED BY CATAWBA
6. IN THE EVENT EXCESSIVE GROUNDWATER OR SPRINGS ARE ENCOUNTERED WITHIN THE LIMITS OF
COUNTY FOR THE INSTALLATION AND MAINTENANCE OF THE SITE EROSION CONTROL.
CONSTRUCTION, THE CONTRACTOR SHALL INSTALL NECESSARY UNDER DRAINS AND STONE
6.PRE-DISTURBANCE NOTIFICATION TO CATAWBA COUNTY INSPECTOR.
AS DIRECTED BY THE ENGINEER. ALL WORK SHALL BE PAID BASED UPON UNIT BIDS,
UNLESS SPECIFIED OTHERWISE.
7.CONSTRUCT TEMPORARY STABILIZED CONSTRUCTION ENTRANCES AS SHOWN ON PLANS.
&INSTALL SILT FENCE AS SHOWN ON PLANS, CLEARING ONLY WHAT IS NECESSARY TO INSTALL THE SILT
7. THE CONTRACTOR IS RESPONSIBLE FOR THE COORDINATION OF ADJUSTMENT OF ALL UTILITY
FENCE.
SURFACE ACCESSES WHETHER HE PERFORMS THE WORK OR A UTILITY COMPANY PERFORMS THE WORK.
9.INSTALL PERMANENT DIVERSIONS AS SHOWN ON PLANS TO DIRECT RUNOFF THROUGH OR AROUND THE
8. THE CONTRACTOR SHALL CONTROL ALL "DUST" BY PERIODIC WATERING AND SHALL PROVIDE ACCESS
SITE. ADEQUATE GROUND COVER TO BE INSTALLED ON PERMANENT DIVERSION DITCHES IMMEDIATELY
AT ALL TIMES FOR PROPERTY OWNERS WITHIN THE PROJECT AREA AND FOR EMERGENCY VEHICLES.
UPON CONSTRUCTION
ALL OPEN DITCHES AND HAZARDOUS AREAS SHALL BE CLEARLY MARKED IN ACCORDANCE WITH THE
10" INSTALL TEMPORARY SKIMMER BASINS AND TEMPORARY SEDIMENT TRAPS AS SHOWN ON PLANS.
SPECIFICATIONS.
ADEQUATE GROUND COVER TO BE INSTALLED ON EMBANKMENTS IMMEDIATELY UPON CONSTRUCTION.
9. ALL AREAS WHERE THERE IS EXPOSED DIRT SHALL BE SEEDED, FERTILIZED AND MULCHED
11. INSTALL TEMPORARY DIVERSIONS AS SHOWN ON PLANS TO DIRECT RUNOFF TO THE SKIMMER BASINS
ACCORDING TO THE SPECIFICATIONS. THE FINISHED SURFACE SHALL BE TO GRADE AND SMOOTH,
AND SEDIMENT TRAPS. ADEQUATE GROUND COVER TO BE INSTALLED ON TEMPORARY DIVERSION
FREE OF ALL ROCKS LARGER THAN 3", EQUIPMENT TRACKS, DIRT CLODS, BUMPS, RIDGES AND
DITCHES IMMEDIATELY UPON CONSTRUCTION.
GOUGES PRIOR TO SEEDING; THE SURFACE SHALL BE LOOSENED TO A DEPTH OE t4"-6" TO
12. NOTIFY CATAWBA COUNTY FOR INSPECTION OF TEMPORARY SKIMMER BASINS AND SEDIMENT TRAPS.
ACCEPT SEED. THE CONTRACTOR SHALL NOT PROCEED WITH SEEDING OPERATIONS WITHOUT FIRST
OBTAINING THE ENGINEER'S APPROVAL OF THE GRADED SURFACE. ALL SEEDING SHALL BE
13. UPON APPROVAL, INSTALL INLET PROTECTION AND ROCK PIPE INLET PROTEC110NS AS STATED ON
PERFORMED BY A MECHANICAL "HYDRO -SEEDER". HAND SEEDING SHALL BE AUTHORIZED ON AN AREA
PLANS.
BY AREA APPROVAL BY THE ENGINEER.
14. MAINTAIN TEMPORARY DITCHES BASED UPON GRADING SUCH THAT RUNOFF IS DIRECTED TO FIRST
BAY OF BASINS.
10. WHERE SPECIFIED, STORM DRAIN PIPE SHALL BE CORRUGATED METAL PIPE (CMP) CONFORMING TO
AASHTO M-36, WITH RE -ROLLED ENDS TO ACCOMMODATE CORRUGATED COUPLING BANDS. 18" PIPE
15. SEED/GRASS FOR STABILIZATION ON ALL NEW CUT AND FILL SLOPES WITHIN 7 DAYS AFTER
2
SHALL BE 16 GAUGE, 24" AND 30" PIPE SHALL BE 14 GAUGE AND 36" PIPE AND OVER SHALL BE
COMPLETION OF ANY PHASE OF GRADING.
0
12 GAUGE AS SPECIFIED ON THE PLANS, PIPE AND COUPLING BANDS SHALL CONFORM TO NCDOT 1032-3
16. EROSION CONTROL MEASURES SHALL BE MAINTAINED DURING THE ENTIRE LENGTH OF THE PROJECT
0
FOR PLAIN PIPE OR 1032-4 (A) FOR BITUMINOUS COATED AND PARTIALLY PAVED PIPE. DIMPLE BANDS
AND UNTIL SITE IS STABILIZED.
J
SHALL NOT BE USED.
17. UPON COMPLETION OF GRADING AND SITE STABILIZATION, THE CONTRACTOR SHALL NOTIFY CATAWBA
WHERE SPECIFIED, STORM DRAIN PIPE SHALL BE REINFORCED CONCRETE PIPE (RCP) CONFORMING TO
COUNTY FOR POST DISTURBANCE INSPECTION OF EROSION CONTROL MEASURES WITH THE CATAWBA
COUNTY INSPECTOR. ALL EROSION CONTROL MEASURES LISTED ON THE PLANS ARE TO REMAIN IN
Z
AASHTO M-170, AS CONTAINED IN NCDOT STANDARD SPECIFICATION 1032-9 FOR WALL B TYPE.
PLACE, NO MEASURE SHALL BE REMOVED WITHOUT PRIOR APPROVAL. A SEPARATE REPORT DESCRIBING
OL
WHERE SPECIFIED, ALL STORM DRAIN PIPE SHALL BE HIGH DENSITY POLYETHYLENE (HDPE). SMOOTH
FINAL EROSION CONTROL AND STORMWATER MEASURES WALL BE SUBMITTED TO CATAWBA COUNTY AT
THE REQUEST OF THE OWNER.
'T
WALL INTERIOR, WITH WATER TIGHT JOINTS, BACKFILLED WITH # 57 WASHED STONE UP TO MIN. 6" OVER
N
THE TOP OF THE PIPE. HDPE PIPE USED FOR STORM DRAINAGE DETENTION SYSTEMS SHALL BE
o
"HANCOR BLUE SEAL" OR APPROVED EQUAL.
Q
N
EC CONSTRUCTION SEQUENCE
ALL CORRUGATED METAL STORM DRAIN PIPE (CMP) SHALL BE ALUMINIZED TYPE 2 CORRUGATED STEEL
U.1
MANUFACTURED IN ACCORDANCE WITH THE REQUIREMENTS OF AASHTO M-36. THE PIPE SHALL BE
UPDATED JANUARY 2022
o
MANUFACTURED ROM ALUMINIZED STEEL TYPE 2 MATERIAL CONFORMING TO THE REQUIREMENTS OF
I-
AASHTO M-274. ALL PIPE SHALL BE FURNISHED WITH RE -ROLLED ENDS AND SHALL BE JOINED WITH
1
HUGGER BANDS. THE USE OF DIMPLE BANDS WILL NOT BE ALLOWED. PIPE THROUGH 24" DIAMETER
a
SHALL BE 16 GAUGE, PIPE THROUGH 42" DIAMETER SHALL BE 14 GAUGE, PIPE THROUGH 54" DIAMETER
�
SHALL BE 12 GAUGE.
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11. CONTRACTOR SHALL VERIFY ALL ELEVATIONS BEFORE INSTALLATION OF FACILITIES.
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12. CATCH BASINS CAST -IN -PLACE SHALL CONFORM TO THE REQUIREMENTS OF NCDOT STANDARD
6
SPECIFICATIONS FOR ROADS AND STRUCTURES (LATEST EDITION) ARTICLES 840-1 THROUGH 840-3.
0
CURB INLET CATCH BASIN SHALL CONFORM TO NCDOT STANDARD DETAILS 840.02
THROUGH 840.04. DROP INLETS SHALL CONFORM TO STANDARD DETAIL 840.14. JUNCTION
co
BOXES SHALL CONFORM TO STANDARD DETAIL 840.31.
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13. CURB INLET FRAME, GRATE AND HOOD SHALL BE NEENAH R-3233D, PRODUCTS BY DEWEY BROS.,
Cn
U.S. FOUNDRY OR EQUAL. DROP INLET FRAME AND GRATE SHALL BE NEENAH R--3339A OR EQUAL.
w
FIELD INLET COVER SHALL CONFORM TO NCDOT STANDARD DETAIL 840.04, OPENING FACING UPSTREAM.
S
In
14. CONCRETE AND MASONRY SHALL MEET THE REQUIREMENTS OF APPROPRIATE SECTION OF NCDOT
Z
STANDARD SPECIFICATIONS FOR ROAD AND STRUCTURES (LATEST EDITION). CONCRETE SHALL
g
BE CLASS A OR B, 4000 PSI MINIMUM, MEETING THE REQUIREMENTS OF SECTION 1000,
CONSTRUCTED IN ACCORDANCE WITH SECTION 825. MASONRY SHALL MEET THE REQUIREMENTS
9
OF SECITON 1040, CONSTRUCTED IN ACCORDANCE WITH SECTION 830 AND/OR 834.
en
Z
15. TOPS OF PROPOSED FRAMES AND GRATES SHALL BE FLUSH WITH FINISHED GRADE.
16. TINDALL PRE CAST CONCRETE BOXES ARE ACCEPTABLE ALTERNATIVES FOR PROPOSED CATCH BASINS.
Z
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NO. I DATE I BY
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable a ainst accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
11 „' Tem ota . Stabi[izatipn
_, P -_ .
F,mnn; tabilization
'
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
e Hydroseeding
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
CONCRETE/
STRUCTURE WITH ,..
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CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for ciewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sandbags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
v remaining leavings and dispose of
10. At the completion of the concrete work, removep
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
I NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING I EFFECTIVE: 04/01/19 1
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during
normal business hours in accordance with the table
below. When adverse weather or
site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection
may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect I (during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is I
order
available, record the cumulative rain measurement for those un-
attended days (and this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero.- The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC '
At least once per
1. Identification of the measures inspected,
Measures 1
7 calendar days
2. Date and time of the inspection, �
and within 24
3. Name ofthe person performing the inspection,
hours of a rain
4. Indication of whetherthe measures were operating
I
event? 1.0 inch in
properly, I
24 hours
5. Description ofmaintenance needsforthe measure,
6. Descri tion, evidence, and date of corrective actions taken. i
(3) Stormwater
At least once per
1. Identification ofthe discharge outfalls inspected,
discharge I
7 calendar days
2. Date and time of the inspection,
7event
outfalls (SDOs) 1
and within 24
3. Name ofthe person performing the Inspection,
hours of a rain
4. Evidence of indicators of Stormwater pollution such as oil
? 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site,
I
6. Description, evidence, and date of corrective actions taken.
1
(4) Perimeter of
1 At least once per
If vlsible sedimentation Is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
I
hours of a rain
the site limits,
event > 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
If the stream or wetland has Increased visible sedimentation or a
wetlands onsite
' 7 calendar days
stream has visible increased turbidity from the construction
or offsite
I and within 24
activity, then a record ofthe followingshall be made:
(where
! hours of a rain
1. Description, evidence and date of corrective actions taken, and
I
accessible)
i event ? 1.0 inch in
2. Records ofthe required reports to the appropriate Division
1
124 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit
'
1
of this permit.
(6) Ground After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
I
2. Documentation that the required ground stabilization I
measures have been provided within the required
timeframe or an assurance that they will be provided as I
soon as possible. '
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be documented in the manner
described:
- - - -
Item to Document Documentation Requirements
(a) Each E&SC Measure has been installed
Initial and date each E&SC Measure on a copy
and does not significantly deviate from the
of the approved E&SC Plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC Plan.
E&SC Measure shown on the approved E&SC
Plan. This documentation is required upon the
initial installation of the E&SC Measures or if
the E&SC Measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
Plan or complete, date and sign an inspection
Plana
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC Measures
have been performed.
(e) Corrective actions have been taken Initial and date a copy of the approved E&SC
to E&SC Measures. Plan or complete, date and sign an inspection
report to indicate the t:ompletion of the
corrective action.
2. Additional Documentation
In addition to the E&SC Plan documents above, the following items shall be kept on the
site
I during normal business hours unless the
and available for agency inspectors at all timesg us ess
Division provides a site -specific exemption based on unique site conditions that make this
requirement not practical:
(a) This general permit as well as the certificate of coverage, after it is received.
(b) Records of inspections made during the previous 30 days. The permittee shall record
the required observations on the Inspection Record Form provided by the Division or
a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
(c) All data used to complete the Notice of Intent and older inZpection records shall be
maintained for a period of three years after project completion and made available
upon request. [40 CFR 122.41]
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that must be reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(a) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(b) Anticipated bypasses and unanticipated bypasses.
(c) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Division's Emergency Response personnel at [phone], (800)
858-0368 or [phone].
-- - -
and
Occurrence Reporting Timeframes (After Discovery) and Other Requirements {
-
(a) Visible sediment • Within 24 hours, an oral or electronic
deposition in a e Within 7 calendar days, a report that contains a description of the
stream or wetland sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired forsediment- i
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance I
with the federal or state impaired -waters conditions.
(b) Oil spills and
• Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
of the bypass.
_--effect
(d) Unanticipated
____ _ ___
. Within 24 hours, an oral or electronic notification.
bypasses [40 CFR
. Within 7 calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass. ',
(e) Noncompliance
. Within 24 hours, an oral or electronic notification.
with the conditions
o Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and I
CFR 122.41(I)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING
HUFFMAN PROPERTY SUBDIVISION
NOT TO SCALE
EFFECTIVE: 04/01/19
SHEET
INITIAL EROSION CONTROL PLAN GENERAL NOTES AND LEGENDS
OFFICE MANAGER DESIGNER
HUFFMAN GRADING CO. INC M. CATHEY N. CROOM I I G=003
CITY OF HICKORY, NORTH CARO L I NA PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
DESCRIPTION I I S. BURWELL N. SAWYER JANUARY 2022 21.00138 N/A

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THIS DOCUMENT HAS BEEN DIGITALLY
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ADMINISTRATIVE CODE 21-56.1103(E).
THIS DIGITAL SIGNATURE HAS BEEN
FOUND BY THE NC BOARD OF
EXAMINERS FOR ENGINEERS AND
SURVEYORS TO MEET THESE
STANDARDS. PLEASE CONTACT THE
SGNER IF YOU NEED ASSISTANCE IN
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VALIDATING THE SIGNATURE.
1
2/24/22
NS
EC REVIEW COMMENTS
NO.
DATE
BY
DESCRIPTION
HUFFMAN PROPERTY SUBDIVISION
INITIAL EROSION CONTROL PLAN
HUFFMAN GRADING Co, I C
CITY OF HICKORY, NORTH CAROLINA
60 0 30 60 120
GRAPHIC SCALE DIVISION VALUE = 60 FEET
OFFICE MANAGER
M.CATHEY
PROJECT MANAGER
S. BURWELL
DESIGNER
N. CROOM
REVIEWER
N. SAWYER
SHEET
EXISTING CONDITIONS
CE=1 01
DATE PROJECT # FUNDING #
JANUARY 2022 21.00138 N/A

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OVERALL INITIAL EROSION
CONTROL PLAN
SHEET
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55 Broad Street
Asheville, NC 28801
828.252.0575
NC Firm License # C-0459
mcgillassociates.com
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THIS DOCUMENT HAS BEEN DIGITALLY
SIGNED AND SEALED IN ACCORDANCE
WITH THE STANDARD CE RTIFICATION
REQUIREMENTS FOUND IN NC
ADMINISTRATIVE CODE 21-56.1103(E).
THIS DIGITAL SIGNATURE HAS BEEN
FOUND BY THE NC BOARD OF
EXAMINERS FOR ENGINEERS AND
SURVEYORS TO MEET THESE
STANDARDS. PLEASE CONTACT THE
SIGNER IF YOU NEED ASSISTANCE IN
VALIDATING THE SIGNATURE.
OFFICE MANAGER
M.CATHEY
DESIGNER
N. CROOM
1
2/24/22
NS
I
EC REVIEW COMMENTS
-
CITY OF HICKORY, NORTH CAROLINA
PROJECT MANAGER
S. BURWELL
REVIEWER
N. SAWYER
DATE
JANUARY 2022
PROJECT #
21.00138
FUNDING #
N/A
NO.
BY
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SIGNED AND DATED: 2022.02.24 1 HUFFMAN PROPERTY SUBDIVISION 30 0 15 30 60 SHEET
ZAP-A)1� 16:31:09 -05'00' 1 INITIAL EROSION CONTROL PLAN GRAPHIC SCALE DIVISION VALUE = 30 FEET INITIAL EROSION CONTROL PLAN
THIS DOCUMENT HAS BEEN DIGITALLY -
SIGNED AND SEALED IN ACCORDANCE - AREA 1
WITH THE STANDARD CERTWICATION - OFFICE MANAGER DESIGNER
REQUIREMENTS FOUND IN NC m
ADMINISTRATIVE CODE 21-56.1103(E). _
THIS DIGITAL SIGNATURE HAS BEEN HUFFMAN GRADING Co C WCATHEY N. CROOM
FOUND BY THE NC BOARD OF I I -- j I I
EXAMINERS FOR ENGINEERS AND PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
SURVEYORS TO MEET THESE 2/24/22 NS EC REVIEW COMMENTS I
STANDARDS. PLEASE CONTACT THE CITY OF HICKORY, NORTH CAROLINA
SIGNER IF YOU NEED ASSISTANCE IN EN10. DATE BY DESCRIPTION I S. BURWELL I N. SAWYER . JANUARY 2022 21.00138 N/A
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/J/� J
INITIAL EROSION CONTROL PLAN
AREA 3
DATE PROJECT # FUNDING #
JAN UARY 2022 1 21.00138 1 N/A
SHEET
C=1 04
I

CHAIN-UNK 10' MAX. CENTER TO CENTER
FENCE I 24' TYP' I /-- WIRE OR PLASTIC TIE (TYP-)
2' MIN.
COMPACTED FILL r 6" FREEBOARD
a
C°
NOTE: z
CONTRACTOR SHALL NOT DISTURB EXISTING 0
DITCH IF THE BELOW CRITERIA IS MET 0
z
2
0
w
0
w
Q
z
a
WIRE OR PLASTIC TIE (TYP.)
CHAIN-UNK
FENCE
33" MIN. POST
FILTER FABRIC LAYERS OVERLAPPED
AND 2ND
BY 6" AND FOLDED
LAYER FILTER
16" MIN.
FABRIC
1ST LAYER
FILTER
FILTER
FABRIC
FABRIC
BACKFILL TRENCH
AND COMPACT
THOROUGHLY
�
` �, `
:�:`�':4"MIN....;•,:...:• /
UPSLOPE
\/
/�
AREA)
z
(DISTURBED
/
EXISTING
r
GROUND
DETAIL VIEW
NOT TO SCALE
CONSTRUCTION SPECIFICATIONS:
1. CHAIN-UNK FENCE SHALL BE 42 INCHES IN HEIGHT AND USE 42 INCH FABRIC AND 6 FOOT LENGTH POSTS.
2. POLES DO NOT NEED TO BE SET IN CONCRETE.
3. CHAIN LINK FENCE SHALL BE FASTENED SECURELY TO THE FENCE POSTS WITH WIRE TIES OR STAPLES.
4. FILTER CLOTH SHALL BE FASTENED SECURELY TO THE CHAIN LINK FENCE WITH TIES SPACED EVERY 24"
HORIZONTALLY AT THE TOP AND MIDDLE (VERTICAL) SECTIONS.
5. FILTER CLOTH SHALL BE EMBEDDED A MINIMUM OF 8 INCHES INTO THE GROUND.
6. WHEN TWO HORIZONTAL SECTIONS OF FILTER FABRIC ADJOIN EACH OTHER, THEY SHALL BE OVERLAPPED BY 6"
AND FOLDED.
7. FILTER BARRIERS SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND DAILY DURING PROLONGED
RAINFALL. REPAIRS SHALL BE MADE AS NECESSARY.
8. FABRIC SHALL BE REPLACED PROMPTLY IF FOUND TO BE IN DISREPAIR.
9. SEDIMENT DEPOSITS SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN DEPOSITS REACH APPROXIMATELY
1/3 HEIGHT OF BARRIER.
EC SILT FENCE - SUPER
3 UPDATED MARCH, 2017
NOT TO SCALE
STANDARD HARDWARE
CLOTH - EXTEND 12"
POST BELOW GRADE
RIP RAP FACED WITH #57
WASHED STONE - 6" THK. MIN.
N
GROUND iv
`OPTIONAL 5' x 10' x 2' DEEP
SEDIMENT TRAP
8" EXCAVATE 8" x 12" TRENCH
UPSLOPE ALONG LINE OF POSTS.
EXTEND HARDWARE CLOTH INTO
TRENCH. BACKFILL TRENCH AND
COMPACT SOIL
SECTION
ADDITIONAL HORIZONTAL
BRACE AT OPENING
8'-0" MAX.
4' O.C.
STANDARD HARDWARE-- I- ii �- ATTACH HARDWARE CLOTH TO
CLOTH - EXTEND 12" i i i POST SECURELY WITH TIES
BELOW GRADE u u u
SILT FENCE OU'R.ET TO BE
LOCATED AT LOW POINT IN
ELEVATION SILT FENCE OR AS SPECIFIED
NOTES:
1. FILTER BARRIERS SHALL BE INSPECTED 3. SEDIMENT DEPOSITS SHALL BE REMOVED
IMMEDIATELY AFTER EACH RAINFALL AND AFTER EACH STORM EVENT AND WHEN
DAILY DURING PROLONGED RAINFALL DEPOSITS REACH APPROXIMATELY 1/3
REPAIR SHALL BE MADE AS NECESSARY. HEIGHT OF BARRIER.
2. FABRIC SHALL BE REPLACED PROMPTLY 4. SILT FENCE OUTLETS SHALL BE LOCATED
IF FOUND TO BE IN DISREPAIR. AT LOW POINTS IN CONTINUOUS RUNS OF
SILT FENCE.
EC SILT FENCE - OUTLET
2 UPDATED MARCH, 2017
NOT TO SCALE
'oe
SEE TABLE FOR
DITCH SIZE
PERMANENT DIVERSION DITCH SIZES PERM DITCH ID
0'
ALL
NOTE:
ALL PERMANENT DIVERSION DITCHES SHALL HAVE
EROSION CONTROL MATTING PER DETAIL EC-10
E� PERMANENT DIVERSION DITCH
5 J UPDATED MARCH, 2017
NOT TO SCALE
I=�
15 cm
LONGITUDINAL ANCHOR TRENCH
(USE WHERE NEEDED)
6"
(15 c
SEE DITCH DETAILS
� 2 2
1 t
DITCH MATTING
DITCH ID
MATTING TYPE
ALL PERMANENT DITCHES
NAG SC250
TEMPORARY DITCHES
NAG SC150 UNLESS OTHERWISE
NOTED ON PLANS
5 cm)
6"
(15 cm)
2"-5"
i-12.5cm)
NOTES:
1. PREPARE SOIL BEFORE INSTALLING ROLLED EROSION CONTROL PRODUCTS (RECP'S), INCLUDING ANY NECESSARY APPLICATION OF LIME, FERTILIZER, AND
SEED.
2. BEGIN AT THE TOP OF THE CHANNEL BY ANCHORING THE RECP'S IN A 12" DEEP X 6" WIDE TRENCH WITH APPROXIMATELY 12" OF RECP'S EXTENDED
BEYOND THE UP -SLOPE PORTION OF THE TRENCH. ANCHOR THE RECP'S WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" APART IN THE BOTTOM
OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12" PORTION OF
RECP'S BACK OVER SEED AND COMPACTED SOIL SECURE RECP'S OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY
12" APART ACROSS THE WIDTH OF THE RECP'S.
3. ROLL CENTER RECP'S IN DIRECTION OF WATER FLOW IN BOTTOM OF CHANNEL RECP'S WILL UNROLL WITH APPROXIMATE SIDE AGAINST THE SOIL
SURFACE. ALL RECP'S MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES PER MANUFACTURER'S RECOMMENDATIONS.
4. PLACE CONSECUTIVE RECP'S END OVER END WITH A 4" - 6" OVERLAP. USE A DOUBLE ROW OF STAPLES STAGGERED 4" APART AND 4" ON CENTER
TO SECURE RECP'S
5. FULL LENGTH EDGE OF OF RECP'S AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12" APART IN A 6"
DEEP X 6" WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
6. ADJACENT RECP'S MUST BE OVERLAPPED APPROXIMATELY 2" - 5" (DEPENDING ON TYPE) AND STAPLED.
7. IN HIGH FLOW CHANNEL APPLICATIONS, A STAPLE CHECK IS RECOMMENDED AT 30 TO 40 FOOT INTERVALS. USE A DOUBLE ROW OF STAPES
STAGGERED 4" APART AND 4" ON CENTER OVER ENTIRE WIDTH OF CHANNEL
8. THE TERMINAL END OF THE RECP'S MUST BE ANCHORED WITH A ROW OF STAPLE/STAKES APPROXIMATELY 12" APART IN A 6" DEEP X 6" WIDE TRENCH.
BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
9. IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6" MAY BE NECESSARY TO PROPERLY SECURE THE RECP'S.
10. MATTING SHALL BE THE ABOVE INDICATED MATTING TYPE, AMERICAN EXCELSIOR EROSION CONTROL BLANKET, OR EQUAL INSTALL ON ALL
DISTURBED SLOPES (CHOSEN PRODUCT MUST BE RATED FOR SLOPES OF 2.1 OR 1:1). SEE PLAN FOR PRODUCT TYPE THAT MAY BE SPECIFIED
DIFFERENTLY
11. PRESS ENDS OF MATTING 4"INTO GROUND AROUND STRUCTURES AND STAPLE SECURELY.
A IvoTEs:
B CRITICAL POINTS
1. HORIZONTAL STAPLE SPACING SHOULD BE ALTERED
C A. OVERLAPS AND SEAMS IF NECESSARY TO ALLOW STAPLES TO SECURE THE
B. PROJECTED WATER LINE CRITICAL POINTS ALONG THE CHANNEL SURFACE.
C. CHANNEL BOTTOM/SIDE 2, IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR
_-_-- SLOPE VERTICES STAKE LENGTHS GREATER THAN 6" (15 cm) MAY
BE NECESSARY TO PROPERLY ANCHOR THE RECP'S.
EC SWALE MATTING INSTALLATION
UPDATED MARCH, 2017
NOT TO SCALE
CONTRACTOR TO MAINTAIN
BELOW SIZES FOR ALL
INDICATED EXISTING DITCHES
EXISTING DITCH ID
2.•� 2% ^�
MIN
UPPER SECTIONS OF
NORTH AND SOUTH
DITCHES
MIN
COMBINED LOWER
SECTION OF EXISTING
DITCH
rEcN EXISTING DRAINAGE SWALE
7 B UPDATED MARCH, 2017
NOT TO SCALE
12"
NOTESY<1ice'll<IZ<,1A
1. PREPARE SOIL BEFORE INSTALLING ROLLED EROSION CONTROL PRODUCTS (RECP'S), INCLUDING "ANY NECESSARY APPLICATION OF LIME,
FERTILIZER, AND SEED.
2. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE RECP'S IN A 6" DEEP X 6" WIDE TRENCH WITH APPROXIMATELY 12" OF RECP'S
EXTENDED BEYOND THE UP -SLOPE PORTION OF THE TRENCH. ANCHOR THE RECP'S WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12"
APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND
FOLD REMAINING 12" PORTION OF RECP'S BACK OVER SEED AND COMPACTED SOIL. SECURE RECP'S OVER COMPACTED SOIL WITH A ROW OF
STAPLES/STAKES SPACED APPROXIMATELY 12" APART ACROSS THE WIDTH OF THE RECP'S.
3. ROLL THE RECP'S DOWN OR HORIZONTALLY ACROSS THE SLOPE. RECP'S WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE.
ALL RECP'S MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING AND SPACING STAPLES/STAKES IN APPROPRIATE LOCATIONS PER
MANUFACTURER RECOMMENDATIONS.
4. THE EDGES OF PARALLEL RECP'S MUST BE STAPLED WITH APPROXIMATELY 2"-5" OVERLAP DEPENDING ON RECP'S TYPE.
5. CONSECUTIVE RECP'S SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END (SHINGLE STYLE) WITH AN APPROXIMATE 3" OVERLAP.
STAPLE THROUGH OVERLAPPED AREA, APPROXIMATELY 12" APART ACROSS ENTIRE RECP'S WIDTH.
6. IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6" MAY BE NECESSARY TO PROPERLY SECURE THE
RECP'S.
7. INSTALLATION OF MATTING SHALL CONFORM TO MANUFACTURER'S REQUIREMENTS.
8. SEE GRADING PLAN FOR LOCATIONS 0 CUT AND FILL SLOPES.
9. MATTING SHALL BE : NORTH AMERICAN GREEN SC150, AMERICAN EXCELSIOR EROSION CONTROL BLANKET, OR EQUAL. INSTALL ON ALL
DISTURBED SLOPES (CHOSEN PRODUCT MUST BE RATED FOR SLOPES OF 2:1 OR 1:1). SEE PLAN FOR PRODUCT TYPE THAT MAY BE SPECIFIED
10. ALLOW 3" MIN. OVERLAP BETWEEN PARALLEL STRIPS.
11. BURY THE TOP OF THE MAT IN A TRENCH 4" OR MORE IN DEPTH. TAMP THE TRENCH FULL SOIL. SECURE WITH ROW OF STAPLES, 10"
SPACING, 4" DOWN FROM THE TRENCH. OVERLAP END OF TOP STRIP 4" AND STAPLE.
EROSION 10"
CONTROL
.. BLANKET
�--- 1-1 /2"
EXCAVATED CUT METAL STAPLE
SLOPE
EROSION CONTROL BLANKET
COMPACTED FILL
SLOPE
CONTROL
BLANKET
\ ��/\............
................
? �j
..... '.'.'.'.
''.'''''''.. S�
.
/��............................
. ......
......... .. OAF
rEC� SLOPE MATTING INSTALLATION
UPDATED MARCH, 2017
NOT TO SCALE

m
Q
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OO
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n C --i
fT'1
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n
7z
m
N �
D
o rM','
14
m z
Nrn o
+� O
0 D
rr*I
MAINTENANCE NOTE: INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER
EVERY RAINFALL IMMEDIATELY REMOVE SEDIMENT FROM THE FLOW AREA AND REPAIR
THE DIVERSION RIDGE. CAREFULLY CHECK OUTLETS AND MAKE TIMELY REPAIRS AS
NEEDED. WHEN THE AREA PROTECTED IS PERMANENTLY STABILIZED, REMOVE THE
RIDGE AND THE CHANNEL TO BLEND WITH THE NATURAL GROUND LEVEL AND
APPROPRIATELY STABILIZE IT.
�. TOP OF EXISTING GROUND
COMPACTED EARTH FILL
2' MIN. 6' MIN.
11 1-1 1 i-I I -I Ii-b I ----ITI-^ 11FI-^I I I-i ^---I 18" MIN.
6' TYPICAL
NOTE:
CONTRACTOR SHALL NOT DISTURB ANY AREA WHERE THERE IS AN
EXISTING DITCH LOCATED AT A PROPOSED TEMPORARY DITCH IF
THE BELOW CRITERIA IS ALREADY MET
TEMP. DITCH SIZES TEMP. DITCH ID
1.5'rMIN
ALL
PLA
2' 1
PIPI
FU
PLAN VIEW
STD. REINFORCED STONE THICKNESS VARIES
CONCRETE FLARED ZERO SLOPE MIN. D50 = 4"
END SECTION
_ 2:1 SLOPE
• i i 12' r,.(� FP
W=DO+LA I
LA
FILTER FABRIC
SECTION A -A
SIZE OF DISSIPATOR TO BE
DETERMINED AS SHOWN IN
SECTION 8.06 OF NCDEQ
NOT TO SCALE
CITY OF HICKORY
RIP -RAP OUTLET SHEET 1 OF 1
PROTECTION DATE: STD. No.
Ui k1%iSia 2-1-07 108
NOTES
1. La IS THE LENGTH OF THE RIPRAP APRON
2. d- 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS THAN 6".
3. IN A WELL-DEFINED CHANNEL EXTEND THE APRON UP THE CHANNEL BANKS TO AN ELEVATION OF 6" ABOVE THE
MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE BANK, WHICHEVER IS LESS.
4. FILTER FABRIC SHOULD BE INSTALLED BETWEEN THE RIPRAP AND SOIL FOUNDATION.
5. REFERENCE NCDEQ LAND QUALITY SECTION DESIGN MANUAL- 6.41.
RIPRAP APRON SIZING
OUTLET
No.
PIPE DIAMETER
(Do)
3 x Do
APRON LENGTH
(La)
APRON WIDTH
(W-Do+La)
MAX. RIPRAP SIZE
PROP PIPE #1
24"
6'
8'
10,
4"
PROP PIPE #2A AND #28
DUAL 36"
9'
9.5'
18.5'
6"
PROP PIPE #3
36"
9'
9'
18'
7"
PROP PIPE #4
36"
9'
9'
18'
7"
PROP PIPE #5
42"
10.5'
16'
26.6
18"
TOP OF BERM CARRY RIP -RAP UP 1 12' MIN
SIDES OF SPILLWAY MIN
ye
TOP ELEVATION OF STORMWATER #5 OR #57 WASHE STON 1' FREEBOARD MIN.
-m '�<O� 1' FLOOD STORAGE ZONE 111(MAX)
TOTEDIBAS N CAP CITE ZONE 4' MIN. 3' MIN.
1.5' MAX. SEDIMENT DEPTH u „u „ u u , CLASS Buuj Wo
fin` nlWig RIP -RAP of p
MAXIMUM LEVEL OF SEDIMENT it 14 4 I 1 8' MIN. _
COLLECTED - CLEAN BASIN MINT
WHEN THIS LEVEL IS REACHED
SECTION THRU BASIN & FILTER A -A
GRAVEL & RIP -RAP FILTER BASIN DETAIL
A
CARRY RIP -RAP UP
CARRY RIP -RAP UP SIDES OF SPILLWAY
SIDES OF SPILLWAY
- - 10' MIN.
I 1' MIN. FREEBOARD
A
PERSPECTIVE VIEW
z oQy�� '" _-� #1 RIP -RAP
M #5 WASHED STONE
NINON m* >lyl yli
7' APPROX.
SECTION THRU BASIN & FILTER B-B
NOTE: THIS STRUCTURE MUST BE DESIGNED TO PASS
THE 10-YEAR STORM WITHOUT OVERTOPPING THE
EARTH BERM.
NOT TO SCALE
HICIKQRY CITY OF HICKORY
SHEET 1 OF 1
TEMPORARY SEDIMENT TRAP DATE: STD. NO.
t 1�,a cii 2-1-07 109
TRAP
TOP
BERM
SPILLWAY
SPILLWAY
BERM
BASIN
AVG BASIN
AVG BASIN
#
ELEV.
ELEV. (ft)
(D x WIDTH)
WIDTH
DEPTH
BOTTOM
BOTTOM
(FT)
(FT)
LENGTH (FT)
WIDTH (FT)
(ft)
TR-1
954'
952.5'
1.5' x 6'
5'
4'
76'
19'
TR-2
999'
997.5'
1.5' x 4'
5'
4'
32'
6'
TR- 3
969'
967.5'
1.5' x 6'
5'
4'
48'
14'
MAINTENANCE SCHEDULE:
1. AT A MINIMUM, TEMPORARY SEDIMENT TRAPS SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT
GREATER THAN 1/2-INCH.
2. REMOVE SEDIMENT AND RESTORE TRAP TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO
ONE-HALF THE DESIGN DEPTH OF THE TRAP.
3. PLACE THE SEDIMENT THAT IS REMOVED IN A DESIGNATED DISPOSAL AREA AND REPLACE THE CONTAMINATED PART
OF THE GRAVEL FACING. DISPLACED RIP -RAP SHALL BE REPLACED IMMEDIATELY.
4. CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING ACCESS WITHIN LIMITS OF DISTURBED AREA TO ALL
SEDIMENT TRAPS FOR MAINTENANCE DURING CONSTRUCTION AND REMOVAL UPON PROJECT COMPLETION.
O SPI
LLWAY ILLWAY RIP -RAP SHALL EXTEND TO THE TOE OF PROPOSED BERM AT A MINIMUM
wy, HUFFMAN PROPERTY SUBDIVISION NOT TO SCALE
INITIAL EROSION CONTROL PLAN
• ®,55 I N
OFFICE MANAGER DESIGNER
HUFFMAN GRADING ca M. CATHEY N. CROOM
' PROJECT MANAGER REVIEWER
CITY OF HICKORY, NORTH CAROLINA S. BURWELL N. SAWYER
NO. DATE BY DESCRIPTION
*NOTE: SEE EROSION CONTROL PLAN
FOR PIPE SIZE
DIKE
HOLD DOWN STAKES
PLASTIC CORRUGATED
5' \
MIN.
0000°0000 -
18" MIN o°o°o°%o°o�_�
°o°000 °° - - -
14
f- 1
4' MIN.
CLASS B RIPRAP LEVEL SECTION
OUTLET STABILIZE
OUTLET \
WASHED STONE
INLET PROTECTION
o,
1.5' MIN. BERM ON
TOP OF SLOPE --�
PROVIDE WASH STONE INLET '-
PROTECTION -MIN. 12" HIGH
X 3' WIDE ALL AROUND INLET. / °°og°°og
EXCAVATE SEDIMENT STORAGE
AREA MIN. 12" DEEP X 3' WIDE
ALL AROUND STONE PROTECTION i
CK1 10RY
PLAN VIEW
STANDARD -SECTION
1.5'
MIN.
CITY OF HICKORY
TEMPORARY SLOPE
DRAIN DETAIL
SLOPE DRAIN SIZES
ID
PIPE SIZE
#1
12"
#2
12"
#3
18"
#4
30"
#5
12"
#6
24"
#7
12"
#8
12"
#9
12"
#10
12"
#11
12"
#12
12"
4'
MIN.
DROP EXCAVATION
AREA FOR SILT
NOT TO SCALE
SHEET 1 OF 1
DATE: STD. NO.
2-1-07 113
NOTES:
1. PLACE SLOPE DRAINS ON UNDISTURBED
SOIL OR WELL COMPACTED FILL AT 200'
INTERVALS ALONG NEW FILL SLOPE
DURING CONSTRUCTION.
2. SLIGHTLY SLOPE SECTION OF PIPE UNDER
THE DIVERSION DIKE TOWARD OUTLET.
3. ENSURE THAT ALL SLOPE DRAIN .
CONNECTIONS ARE WATERTIGHT.
4. INSPECT AFTER EVERY RAINFALL AND
MAKE NECESSARY REPAIRS.
5. REFERENCE NCDEQ LAND QUALITY
SECTION DESIGN MANUAL- 6.32.
MISCELLANEOUS DETAILS
DATE PROJECT # FUNDING #
JANUARY 2022 1 21.00138 1 N/A
SHEET
C=502
Go
m
0
0
N

2
0
w
0
w
Q
z
2
A
0
N
N
0
N
4
Q
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0
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a
c�
0
V)
w
w
p
V
ul
00
tM
0
0
W
q.
INFLOW
STRUCTURE
RIPRAP -�
SEED OR MAT SLOPES
OF SKIMMER BASIN
FOR STABILIZATION
PROP DESIGN
SURFACE AREA ELEV
INFLOW
STRUCTURE-1
SURFACE
FILTER FABRIC-0"
SEDIMENT
STORAGE DE -WATERING
ZONE ZONE
RIP RAP LEVELING PAD
UNDER SKIMMER TO PREVENT
GROUNDING OUT
ARM ASSEMBLY
END CAP
PVC TEE
EMBANKMENT
EXTEND SKIMMER
OUTLET BEYOND OF SILT
FENCE
--------------------
EMERGENCY SPILLWAY
INCLUDE IMPERVIOU
-TO
UNER WITH RIP -RAP
RIP RAPLEVELING PAD
UNDER SKIMMER
ry�Af
\ / 2
i
PLAN ; yvQ�+�o
BAFFLES LTURN SILT FENCE i
INTO DAM SECTION /��pJ, Q
EMERGENCY SPILLWAY TO Q dJ
INCLUDE IMPERVIOUS LINER
TO EXISTING GRADE
TOP BERM PNER TO EXTEND UP SIDES OF
ODE SLOPE MIN I - TYP. BOTH SIDES
BAFFLES TO BE 6" EMBANKMENT
HIGHER THAN BASIN s» MIN. MIN. 5' WIDE
DEPTH INDICATED ON FROM DEPTH 1' MIN. FREEBOARD
PLAN 70 SPILLWAY --
WEIR ELEV,
z BASIN SIDE R) WATER DEPTH
a SLOPE - `''� ACROSS SPILLWAY
w ARRY LINER DOWN TO
- -a 1�1 --------------- ----- ���e- _________ — EXISTING GRADE (EDGE
~ - OF DISTURBANCE)
SKIMMER TO EXIT AT POND
INVERT ELEVATION OR LOWER TURN EDGES OF
IF POSSIBLE FABRIC DOWN MIN. 12"
SECTION INTO GROUND
NOTE. TAMP AND COMPACT
ALL EMERGENCY SPILLWAYS SHALL BE SEE EROSION CONTROL
LINED IN ACCORDANCE W/ NCDEQ SIDS. PLAN FOR DISCHARGE
FABRIC SHALL BE TERRATEX GS - INSTALL PIPING SIZE & LENGTH
PER MANUFACTURER'S RECOMMENDATIONS
AFTER SKIMMER IS INSTALLED
CONTRACTOR SHALL NOTE SKIMMER
SIZE OF ORIFICE INSTALLED W/ A
• PERMANENT MARKER - NOTATION TO
•• BE VISIBLE OUTSIDE OF BASIN
"C»
iN ENCLOSURE
•
•• WATER
ENTRY UNIT
10P MEW
PVC ELBOW PVC VENT PIPE SCHEDULE 40
WATER SURFACE
�- PVC END CAP
SCHEDULE 40
PVC PIPE l¢' HOLES PVC PIPE •--\
IN UNDERSIDE
FLEXIBLE HOSE
BOTTOM SURFACE
FRONT VIEW
PVC PIPE
--ORIFICE PLATE
PVC TEE
BASIN
TOP
BERM
EMERGENCY
EMERGENCY
BERM
BASIN
SIDE
TOP
BERM
SKIMMER
BASIN
AVG
BASIN
AVG
BASIN
SKIMMER
SKIMMER
#
ELEV.
SPILLWAY
ELEV. (ft)
SPILLWAY
(D x VVIDTH)
WIDTH
(FT)
SLOPE
SIDE
INVERT
ELEV. (ft)
DEPTH
(FT)
BOTTOM
BOTTOM
SIZE (IN)
ORIFICE
SIZE (IN)
(ft)
RATIO
SLOPE
LENGTH
WIDTH
SB-1
951'
950'
1' x 8'
5'
3:1
2:1
947.5'
2'
138'
28'
3"
1.5"
SB-2
944'
943'
1' x 4'
5'
3:1
2:1
940.5'
2'
51'
18'
1.5"
1"
SB-3
949'
948'
1' x 10'
5'
3:1
2:1
945.5'
2'
195'
30'
2"
2"
S13-4
938'
937'
1' x 6'
5'
3:1
2:1
934.5'
2'
89'
34'
2"
1.5"
NOTES:
1. SPILLWAY SHALL BE CONSTRUCTED USING CLASS I RIP RAP WITH FILTER FABRIC UNDERLAYMENT AS
SHOWN IN THE POROUS BAFFLE DETAIL.
2. LENGTH AND WIDTH ARE BASED ON DIMENSIONS AT THE ELEVATION OF THE PRIMARY SPILLWAY.
EC-� TEMPORARY SKIMMER BASIN
27 UPDATED MARCH, 2017
NOT TO SCALE
t
55 Broad Street
Anhr•.rtEll^ nIr ')Qs1nl .-
NOTES:
9 GAUGE HIGH STRENGTH TENSION WIRE
1. INLET ZONE (A) SHOULD HAVE 25X OF SURFACE
STRAND - SECURE TO EACH POST
AREA. FIRST CELL (B) SHOULD HAVE 25X OF
SURFACE AREA, SECOND CELL (C) SHOULD HAVE
TEE POST SUPPORT OR 9 GAUGE WIRE
25X OF SURFACE AREA AND THE OUTLET ZONE
STAKE TO
TO SIDE OF BASIN -SECURE TO
VERTICAL POST
VERTICAL
(D) SHOULD HAVE 25X OF SURFACE AREA.
SUPPORT WIRE
4'-0" MAX.
2. GRADE THE BASIN SO THAT THE BOTTOM IS
LEVEL FRONT TO BACK AND SIDE TO SIDE.
i
3. STEEL POSTS SHOULD BE DRIVEN TO A DEPTH
OF 24 INCHES, SPACED A MAXIMUM OF 4 FEET
i
;; LL L L -LLLLLLLLLLLL
" TOP OF FABRIC
LLLLL L L L L L L L L 11, BE s"
APARt
u LLL -LLLLLL
LLLLLL LLLLL 9-LLL LLL u HIGHER THAN
LL -LLLLLL
LLLLLL LLLLL LLL LL SPILLWAY INVERT.
2 -0
4. DO NOT SAUCE FABRIC. USE ONE CONTINUOUS
L-LLLLLL
LLLLLL LLLLL V L L L L TOP OF BAFFLES
PIECE ACROSS BASIN.
LLLLL
LLLLLL LLLLLL LLL ` SHOULD BE 2"
\ LLLLL
LLL L L LLLLL L LLL LOWER BFAANM TOP
5. INSPECT BAFFLES AT LEAST ONCE A WEEK AND
AFTER EACH RAINFALL. MAKE ANY REPAIRS
IMMEDIATELY. REMOVE SEDIMENT DEPOSITS WHEN
IT REACHES HALF FULL.
<
6. REFERENCE NCDEQ LAND QUALITY SECTION
DESIGN MANUAL- 6.65.
SUPPORT POSTS, 24' MIN.
700 g/m2 COIR MESH OR SIMILAR
BURY INTO BOTTOM OR
SECURE BOTTOM OF BAFFLE TO
SIDE
GROUND w/ 12' STAPLES O 12" MAX.
SPACING
BAFFLE
EARTHEN
EMBANKMENT •``' `
�;:,_„�'
:, :.j�.•' INLET ZONE
25X OF SURFACE
'..
AREA (A)
FIRST CHAMBER
y
.`.: :?r•
25X OF SURFACE
AREA (8)
r ;o•
�i;
\ SECOND CHAMBER
CLASS I RI
;:i. '
25X OF SURFACE
OU
°
AREA (C)
NOTES
OUTLET ZONE 1. BAFFLE SPACING OF 25X EACH
25X OF SURFACE
PER NEW NCDEQ RECOMMENDATIONS
AREA (D)
\ 2. BASINS LESS THAN 20' LONG REQUIRE
TWO (2) COIR BAFFLES
3. SEE PLANS FOR BAFFLE SPACING
EC POROUS BAFFLE DETAIL
41
UPDATED MARCH, 2017
NOT TO SCALE
�I
NOTE:
1. TEMPORARY GRAVEL CONSTRUCTION
ENTRANCE SHALL BE MAINTAINED TO
REMOVE MUD & SOIL BUILDUP AFTER EACH
RAIN EVENT AND AS NEEDED WHEN
EFFECTIVENESS IS DIMINISHED
2. ABC STONE IS NOT ACCEPTABLE
NOT TO SCALE
-FfICKORY CITY OF HICKORY
TEMPORARY GRAVEL SHEET 1 OF 1
DATE:CONSTRUCTION ENTRANCE -1-07 STD. NO.
ii. WallCrec1.
o°
O°
Ono 0�0
O O O O
A 000 0000
ono 000
000 000
000 000
0 0 0 0
ono 000
000 000
000 0
000�
00
c
DIVERSION
POINT
li'fCKORY
"o"o�a~o�
;000000000
1000000000
7 O00000 O
^0000000
O 00
CLASS 'B' STONE
A
FLOW
— __vj
CULVERT
10,0o000•p0v0
J°O°O°0000 0
o 0 0 0
TOP OF ROCK DAM
SHALL BE LEVEL
�o00000 0 0
ALL AROUND
1 000000
.00°0O0°0°
NO. 57 STONE
PLAN VIEW
i'
3' MIN.
MIN.
CLASS 'B' STONE_
2 1
1 MIN.
0°0
z SLOPE 00
2:1
— ROADWAY
000
0
SLOPE
SHOULDER
N 000
°
O00
—�
z
11' MIN. 2' MIN.
#57 STONE
CITY OF HICKORY
OCK PIPE INLET
SEDIMENT TRAP
NOT TO SCALE
SHEET 1 OF 1.
DATE: STD. NO.
2-1-07 105
PAVEMENT
�i
SHOULDER NOTE:
DITCH CHECKS TO BE REMOVED
INSIDE CLEAR ROADSIDE RECOVERY
TEMP. STONE AREA PRIOR TO TRAFFIC OPERATIONS.
DITCH CHECK
DITCH CHECK SPACING -HEIGHT OF DITCH CHECK MOO
LONGITUDINAL SLOPE (%)
MIN.
C�
CLASS A OR
CLASS B ST(
TEMPORARY STONE
DITCH CHECK
CLASS A OR
CLASS B STONE z
DITCH \ LEDGE OF
SLOP PAVEMENT
DITCH
SLOPE/
\ ISOMETRIC VIEW
SHOULDER PAVEMENT
SEE TYPICAL
SECTIONS
KEY STONE
INTO BANK PROPOSED SHOULDER
PROPOSED DITCH DITCH SLOPE
BACK SLOPE
TYPICAL CROSS SECTION
ROADWAY GRADE POINT SHOULDER POINT
CLASS A OR
CLASS B STONE
N BOTTOM OF DITCH
it
4' TO 6'
�r
TYPICAL LONGITUDINAL SECTION
QUANTITY APPROXIMATELY 1 TO 2 TONS STONE
NOT TO SCALE
SOY CITY OF HICKORY
TEMPORARY STONE ISHEET 1 of 1
" DATE: STD. NO.
i€rn.uIl DITCH CHECK 2-1—D7 112
HUFFMAN PROPERTY SUBDIVISION
INITIAL EROSION CONTROL PLAN NOT TO SCALE
MISCELLANEOUS DETAILS
OFFICE MANAGER DESIGNER
HUFFMAN GRADING CO, CM. CATHEY N. CROOM
PROJECT MANAGER REVIEWER DATE PROJECT # FUNDING #
CITY OF HICKORY, NORTH CARD L I NA
NO. DATE BY DESCRIPTION S. BURWELL N. SAWYER JANUARY 2022 21.00138 N/A
SHEET
C=503 I