NCG020769_Site Map 2_20231218

HAUL ROAD 4 FT MIN.
E SEDIMENT CLEANOUT STAKE
EXCAVATION PIT TOP OF BASIN
MARKED AT HALF THE BAFFLE DEPTH
1 FT
DE—WATERING PUMP 0 FT \Ll. TOP OF BASIN=5.0
SPWY ELEV=4.0
NOTE:
12—INCH THICK LAYER OF NCDOT CLASS B STONE
w i,i w (d50=8") WITH A 4—INCH THICK LAYER OF NO. 57
STONE BEDDING ON NON—WOVEN FILTER FABRIC
m SEDIMENT m 18" MIN. (GEOTEX NW-801 OR ENGINEER—APPROVED EQUAL)
ST ORAGE
RELATIVE BOTTOM ELEVATION BLIND SWALE
f~EAN WA511E,D .aAN.
SEE B EMERGENCY SPILLWAY
' DETAIL NOT TO SCALE
POROUS BAFFLES, TYP. -Z.. ......
L6" MIN.
700g/m2 COIR FABRIC 4.0' DEPTH
(N.A. GREEN C-125BN OR ENGINEER—APPROVED EQUAL).
BAFFLE 1 =25% X BASIN LENGTH
BAFFLE 2=50% X BASIN LENGTH CROSS SECTION
BAFFLE 3=75% X BASIN LENGTH
SETTLING BASIN CALCULATION SUMMARY
NOTES: SURFACE AREA PROVIDED = 150' X 300' = 45,000 SF WOODEN SLATS
1 . POROUS BAFFELS SHALL BE STAKED EVERY 4—FT WITH BASIN DEPTH = 4.0 FT FOR ADJUSTMENT
5—FT STEEL POSTS. VOLUME PROVIDED = 159,440 CF
2. ENSURE THAT BOTTOM OF INFILTRATION IS NOT COMPACTED MAX. INFLOW PUMP = 2000 GPM [2.88 MGD MAX PER CCPCUA PERMIT]
OR MINIMALLY DISTURBED TO MAINTAIN INFILTRATION OF
UNDERLYING SOIL, VOLUME REQUIRED: Vstill = 16xQstill (NCDOT Eqn);
3. DO NOT EXCAVATE BELOW THE 'WATER TABLE. USE Vstill = 32xQstill FRONT V1EW
PROFILE VIEW
4. VEGETATE ACCORDING TO THE PERMANENT SEEDING AND VOL REQ'D = 32x2000gpm = 64,000 CF << VOL PROV'ID. N 159,440 CF 48"ALUMINUM
MULCHING SPECIFICATIONS.
ASSUMED EXFILTRATION RATE = 0.80 IN. HR. FLASHBOARD RISER
/ 2'-10 i 12"WIDE HUGGER BAND WITH
1%SLOPE 12"FLAT GASKET
SETTLING (INFILTRATION) B A S I N D ETA I L 36"DIA 7-1 o 36*DIA X 20' 3W DIA X 20'
OUTLET
NOT TO SCALE PIPE 1' '
(NCDOT STD. PRACTICE) "PLATE FRONTI-4 7-2"
VX4') "PLATE BOTTOM
FULLY WELDED "PLATE FRONT
MAINTENANCE NOTES:
1.. VISUAL INSPECT THE BOARDS FOR DEPOSITIONS OF SUSPENDED SEDIMENT, ORGANIC
SETTLING BASIN CONSTRUCTION SEQUENCE: DEBRIS (LEAF MATTER, ETC.). MINE MODIFICATION PERMIT AND ALL OTHER APPLICABLE
1. EXCAVATE AREA FOR THE INFILTRATION BASIN AS SHOWN PER THE PLAN. PERMITS.
DISPOSE OF EXCAVATED MATERIAL WITHIN THE PIT OR STOCKPILE IN
ACCORDANCE TO THE MINING PLAN AND PERMIT. 2.. VISUAL INSPECT DAMAGES AND/OR HOLES IN THE ALUMINUM STRUCTURE,
2. INSTALL (EMERGENCY SPILLWAY IN ACCORDANCE WITH THE DETAILS. 3. ALWAYS KEEP AT LEAST ONE BOARD IN THE BOTTOM SLOTS.
3. SELECT 1THE PUMP(S) AS RATED FOR TOTAL GPM LESS THAN 2850 GPM OR 4. A SINKER BOARD OR WEIGHTED TIMBER BOARD WILL PREVENT THE SLATS FROM
ADVISE ENGINEER SO THAT A REVISED DAILY PUMPING TIME CAN BE FLOATING.
CALCULATED.
4. INSTALL PUMP HOSE INTO THE BOTTOM OF THE INFILTRATION BASIN AND 5. CONTACT THE LOCAL SOIL CONSERVATION DISTRICT OR USDA LENOIR COUNTY SOIL
SECURE PROPERLY. ON THE SUCTION END OF THE PUMP, USE FILTER CONSERVATION OR NRCS OFFICE FOR ADDITIONAL TECHNICAL ASSISTANCE
ATTACHMENT TO PREVENT LARGE EARTH MATERIALS FROM ENTERING THE BASIN. 252-526-9799.
5. ONCE INFILTRATION BASIN IS EXCAVATED PROPERLY AND SLOPES ARE STABILIZED 6. MAINTAIN CLEAN STORMWATER RUNOFF DISCHARGES THROUGH THE RISER-BARREL.
WITH VEGETATION, THE DE—WATERING CAN COMMENCE.
6. FOLLOW STORMWATER POLLUTION PREVENTION PLAN (SPPP) FOR STANDARD FLASHBOARD RISER
OPERATIONAL PROCEDURES AND WATER QUALITY TESTING SCHEDULES IN NOT TO SCALE
ACCORDANCE WITH NPDES PERMIT.
WESTSIDE MINERALS SHEET
DATE: DEC.2023
WESTSIDE MINERALS LLC PROJECTID
NCDEQ MINE PERMIT 54-52 DRAWN JBS
3043 KENNEDY HOME RD Lenoir County, North Carolina DESIGNED JBS D ET-1
LA GRANGE, NC 28504 CHECKED JBS
[phone] D E WAT E R I N G DETAILS SCALE N/A
REVISION# 3 OF 3