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Home My WebLink AboutNCG021049011 CONSTRUCTION, MAINTENANCE AND INSPECTION NOTES - - -- - TOP OF BERM. ELEV. 813.00 �\ --- 20' WIDTH 4 /\ \ \\ o /` \ I \ \� \ \! ., 1. INSPECT SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2 //\//\/\ 4 \i\//\//\// Cumulative Storage INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. • A �V//VAVAVAV//V//\:, r o 0 0. A�/y/\//V/\//V//V/i 814AO ELEV 811.50 A\AAj/AAj\�j\\j\\j/AA/AAj\ 1 1 \ �► ` \ /� j 2. REMOVE SEDIMENT AND RESTORE THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN IT O O O O viviv/viv/yivjviviv/v�A O O r \ �, ACCUMULATES TO ONE-HALF THE DESIGN DEPTH. PLACED REMOVED SEDIMENT IN AN VA\ /A\VAjAAjAAjAAVAj\VAjA\\%\;�� ✓ ✓ ��✓ 1�1� ✓�� jV\\��jAj\\\jAAj\VAAjAAj��Aj� TOP OF BERM i \ \ �VVVVV\VV \r\i\i\r\r\��i'�i\r�i\i Vi\i�i��\��j� VVVV �\�VVVVVVV// 813.00 13.00 /46, A AREA WITH SEDIMENT CONTROLS. \//\/j�� \//j�//i�//AAAAAAAAA'AAAAAAAAAvAAAA%%% AAAAAAAAAAAA��AAAAAAAAAAAAAAA� AA �/�A�� - / T CHAI N LI N K FENCE 1 IA,�VA,VAAi\%AA%AA%AA�VA\\VA/AVA//\VA//\\\\\\jAV jV\//\\\\/AVAV�A\\/A//VA\A j�/A\\/AAV\\/AVA�Ay��/ / / , / /� / / / / / /� \ SEE DETAIL SHEET OOG-011 x A j�. \ 3. CHECK EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND INSPECT `/AVA \j\V\\\\\/AVyVA/A/A\\VV/VA\V/VA/\\VA/AVA/A\\/A\\\;�A�� 812.00 EMERGENCY g12,00 SPILLWAY THE EMBANKMENT FOR PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS 11.50 IMMEDIATELY. REMOVE ALL TRASH AND OTHER DEBRIS FROM THE RISER AND POOL PRINCIPAL SECTION B 811.00 - 11.00 DRAINAGE AREA DELINEATION \ \ \ AREA. - SPILLWAYY\ 10.50 - 1 p j \ \ \ � 81-0AO CLEANOUT ELEV. 10.00 PROPOSED SITE ACCESS ROAD PROPERTY j \ 12" CLASS 1 RIP-RAP 25 2 BOUNDARY \ v 0 ' w 809.00 .00 RIPRA ` NON-WOVEN GEOTEXTILE FABRIC - \ P INFLOW PROTECTION LIMIT OF DISTURBANCE 1 0', ELEV. 81 1 .50 � \ - I BETWEEN ALL SOIL AND RIP-RAP. I-� -- ►{ COMPACTED FILL ON TOP OF 808.00 808.00 a SEE DETAIL SHEET OOG-009 X ANCHOR IN FABRIC BY RUNNING VIRGIN SOIL WITH TOP SOIL ALONG FACE OF SPREADER LIP TO REMOVED. \\ __ -- TOP OF FOOTER. o \ \ o GROUND 807.00 0_ - POROUS BAFFLES { \ \ \ \ \ \ \ \ \ \ \/\/\/\\\ \ \/ /\ -VIRGIN � � SEE DETAIL SHEET OOG-011 / jy/\yj\/\\/j A/AjA/A/AjA/A/A/A�\ 3:1 ELEV: 809-� OUTLET PROTECTION 3 1 INLET AT LOW _- 806.00 ° OP-203A `� I POND BOTTOM \ POINT, PROVIDE t ' , // // //,// // // // // // /\/\//\//\/\//\//;//\//✓/\\\/ //\// SEE SUMMARY EMERGENCY SPILLWAY ELEV: 808.00 l j \\/\/\j\\\\\\\/\\\/\\\ \\\\�j�\\\\\\\\j\\\j��\\\\��\\�/\\\\\\\�\�\\\\\\\\\\ � u � INLET PROTECTION ELEV. r/ / r/ O / / / / / / / / / / /, / // / // % / // / / / / / / // // // // // // // // // // O SHEET OOG-005 \\\\ \\\\ o \\\\ \\\\/\\\\\\\\\\\/\\�j\\/\\\\\j\\/j\./\ \\\/\/\\/\/�\\\/\/\\\\\/\\/\\\\\ 0 805.00 ----- DURING CONSTRUCTION -- ---- -- // //,// // // // //. // // // // // // // // // //\// \// \// \// // SEE DETAIL I L THIS S SHEET / 0.00 0.15 0.19 0.33 0.43 0.54 0.65 0.78 1.05 Cumulative Storage (ac-ft) - --- / 48" OUTLET STRUCTURE WITH \ \ - _ KEY IN RIP-RAP KEY IN RIP-RAP -- --- \ \ --- ' SKIMMER AND 50 LF OF 24 HDPE SECTION A 808 SEE DETAILS THIS SHEET - \\ / BOTTOM OF POND _ _ _ L --- EMERGENCY SPILLWAY SILT FENCE ELEV. 808.00 ¢ -� SEE DETAIL SHEET OOG-008 _ NOT TO SCALE Size Elev. (rttel} .Depth (ft) .Area( CumOu�#aYe lifvlurl0ne(ac-ft) BASIN ACCESS ROAD \ / B B TOP OF BERM ELEV. 813.00 . l 1�.00 5,857 0.00 ARM ASSEMBLY - - - 8t�.00 '1,00 7,118 0.15 - ¢ 1 809.25 1.25 7,442 0.19 / �/► - J-HOOKS 810.00 2:0�4 8,435 0.33 ..\ -` X =' �i ,. 810�50 2.50 9,115 0.43 ., C" ENCLOSURE SB-203 `, 811.00 3.00 9,8M 0.54 C 811.50 3.50 1�0,517 0.65 _ 8�12. 4.00 '1"1,239 G.78 a PIPE 3-N ( SEE OUTLET PROTECTION OP-203 -- - X- -__- \ '� \ - / CULVERT SUMMARY SEE SUMMARY SHEET OOG-005 I WATER ENTRY UNIT X r -� 813.00 5.00 12,726 1.C15 + TABLE ON SHEET _ y- ----- � PERSPEC �-IVE- \I_DW OOG-005) 100 YEAR FLOODPLAIN x 30 FT STREAM BUFFER \ " PVC VENT SCHEDULE 40 PVC ELBOW PIPE -� PVC PIPE ""..,�.. PVC END CAP PIPE DIA TER r \ ME " SILT FENCE ROCK OUTLET SEDIMENT BASIN 203 PRINCIPLE SPILLWAY r Shimmer Design,SB-213 ReWd Vol cfj: 7.0�74 -- \- WATER SURFACE v.,:�„ DESIGN INFORMATION NNEWDeWe d Sltimmer Drawdowwn Tame (tdf 72 Firs PLAN VIEW PVC END CAP SCHEDULE 40 Desired SkimmerDrawdowwn Rate ( ) 2,368 f Iday Outlet: Sediment Basin 203 Principle Spillway, Drop Pipe SCALE: 1"=50' 3"PVC PIPE Riser Top Elev: 810.50 ft SEE TABLE FOR Skimmer Size 3.C1 in Riser Length: 4.0 ft 50 0 50 100 PVC PIPE `E Orifice Coefficient: 0.60 CUTOFF TRENCH ALIGNS 1 '2" HOLES IN PIPE DIAMETER \ -` ' Head on Anlir�e { O'25+0ft Weir Coefficient. 3.1 SCALE IN FEET WITH q EMBANKMENT PVC TEE UNDERSIDE �„ Culvert Length: 50.00 ft INSTALL COLLAR,WITH CORRUGATIONS PVC TEE 1. ORIFICE PLATS Ca fated Orifice DfamelW 1.429 M Culvert Diameter. 24.00 in VERTICAL. COLLAR TO BE OF SAME GAGE EXISTING GROUND Culvert Invert In: 807.80 ft AS THE PIPE WITH WHICH IT IS USED. Actual Orifice l�taanetr .S00s0 �' Culvert Friction Coefficient: 0.01 FILL MATERIAL FLEXIBLE f NOTES: al Skimmer Drawardo�n Time` 65 Culvert Entrance Loss Coefficient: 0.90 _ C MINIMUM IF NOT 1. ALL PVC PIPES ARE TO BE SCHEDULE 40 UNLESS � HOSE CUT TO BEDROCK �- BAND \ - - OTHERWISE NOTED. Discharge: 24.86 cfs 1/2"X 2" SLOTTED _.__ _._-w-.__�. 2. ALL JOINTS OF THE FLOTATION SECTION SHALL BE Require Discharge: 19.99 c s 2" i 1 i 1 i 1 1 1 i � HOLES @ 8" C.C. 1 _ _ SOLVENT WELDED. JOINTS OF SKIMMER SECTION NEED � i � I I I i � i � i I FOR 3/8"0 BOLTS 1 �� B NOT BE WATER-TIGHT. �q 1 101 1 101 V d poi 0 3. HDPE FLEXIBLE DRAIN PIPE IS TO BE ATTACHED TO THE OD OF PIPE FRONT PIPE BARREL STRUCTURE WITH WATER-TIGHT 2'- - \ E N D VI EAU FRO N I VIEW CONNECTIONS. - ¢ ---SUITABLE EARTHEN 4. SKIMMER SIZES AND ORIFICE DIAMETERS ARE CALCULATED RISER BUOYANCY CALCULATION MATERIAL COMPACTED TO BASED ON NCDEQ DESIGN METHODOLOGY AND WILL BE - - - 95% OF STANDARD REVIEWED AND APPROVED BY THE ENGINEER ONCE A DEMONSTRATE ADEQUATE STABILITY BY SHOWING THE DOWNWARD FORCE IS A - ONE PIECE CONNECTING S KI M M E R PROCTOR MAX. DRY SKIMMER SUPPLIER/MANUFACTURER HAS BEEN CHOSEN. BAND WELDED TO PIPE; o MINIMUM OF 1.25 TIMES THE UPWARD FORCE. CUT-OFF TRENCH DENSITY WITHIN W: 4' MIN. CONTINUOUS WELD BOTH - ----- -- -- -------- - OPTIMUM MOISTURE NOT TO SCALE DOWNWARD FORCE (STRUCTURE WEIGHT) > 1.25 x UPWARD FORCE (BUOYANCY) SIDES OF BAND NOT TO SCALE CONTENT ANTI-SEEP COLLARS 48" CONCRETE RISER TRASH RACK--- WEIGHT= 10,147 Ib SKIMMER, SEE DETAIL _1O' TOP OF EMERGENCY SPILLWAY, SEE DETAIL THIS THIS SHEET RETRIEVAL ROPE- BERM WIDTH NOT TO SCALE SHEET ANCHORED IN WHERE: SEDIMENT 48" CONCRETE THE SLOPE V FREEBOARD 4'x4' (INSIDE-- - RISER STRUCTURE � RISER WEIGHT= 10,147 Ib DIMENSION) RISER CLEANOUT MIN. V FREEBOARD- \�\��n�/ / - TOP OF BERM. ELEV 813.00 GAGE - WEIGHT OF CONCENTRATE BASE = LENGTH x WIDTH x DEPTH x UNIT STRUCTURE \ - -- -- - --- - --- ------- ( ) WEIGHT OF CONCRETE - _-__-- _-- - ----- 0.5' DEPTH OF FLOW CONCRETE \ a SEDIMENT E MARK, CLEANOUTELEV09 25 0�° ❑oo�o �oa��o / \��\\�\/��\\��\\�� \\�/\\ \ EMERGENCY SPILLWAY ELEV 811.50 WEIGHT OF CONCRETE BASE _ (6.0 ft x 6.0 ft x 1.5 ft) x 150 lb/ft3= 8100 Ib BASE RISER CREST ELEV. 810.50 //\/ \//� �- EMBANKMENT STABILIZED STRUCTURE WEIGHT = 10,147 Ib + 8100 Ib = 18,247 Ib SKIMMER,-- a , 1 WITH VEGETATION BUOYANCY= DISPLACEMENT VOLUME OF RISER x 62.4 Ib/ft3 SEE DETAIL 3 CUT OFF TRENCH 3 � THIS SHEET OUTLET APRON BUOYANCY = 96 ft3 x 62.4 Ib/ft3= 5,990.4 Ib ---- ---- --- ------- -- - ---- ------- DOWNWARD FORCE (STRUCTURE WEIGHT) > 1.25 x UPWARD FORCE (BUOYANCY) 24" DIA. CMP INV. ELEV 807.80 24" DIA. CMP A - -- - - - --- - - ----- BOTTOM OF POND I - OD\�O°� °i ELEV 808.00 - III \\ \ \A\ _) O 18,247 Ib > 5990.4 Ib x 1.25 18,247 Ib > 7,488 Ib a - ANTI-SEEP COLLAR 1. PORTLAND CEMENT CONCRETE (TYPE II RECOMMENDED) FOR THE INLET BASE ° ° SEE DETAIL THIS SHEET SHALL HAVE A MINIMUM COMPRESSIVE STRENGTH OF 4,000 PSI. CONCRETE BASE --- --------_-__-- 20' �VOERY 2. WHERE CORRUGATED ALUMINUM OR ALUMINIZED STEEL PIPE IS USED, ALL L6.0' x 6.0' x 1.5' AREAS WHERE THE PIPE IS TO BE IN CONTACT WITH CONCRETE SHALL BE PAINTED NOTES: WITH A BLACK BITUMINOUS ENAMEL PAINT. � - - � 1. FAIRCLOTH TYPE OR EQUIVALENT SKIMMER TO BE USED. 2. INSTALL ANTI-VORTEX PLATE IN RISER STRUCTURE. RISER PLAN VIEW SEDIMENT RISER BASIN NOT TO SCALE NOT TO SCALE PROJECT MANAGER V. HAYNES, PE ----- ---- ,,0%J1�AR-,� PIEDMONT LITHIUM CAROLINAS, INC. �N ••••••••.° SEDIMENT BASIN SB-203,\ �oFFSsioy.\=� CAROLINA LITHIUM PROJECT SFAS = PLAN VIEW & PROFILE DETAIL 5 3/13/2024 REVISED PER DEMLR COMMENTS 4 1/23/2023 REVISED PER DEMLR COMMENTS 3 LITHIUM HYDROXIDE CONVERSION PLANT P I E DPA N 3 5/31/2022 REVISED PER DEMLR COMMENTS IN N�;•.••'�� GASTON COUNTY NORTH CAROLINA SHEET -R T HDR Engineering Inc.of the Carolinas 2 12/08/2021 REVISED PER DEMLR COMMENTS ____________--_ __ �'�i F�/•••' jPj � r FILENAME - 01CP-CO05 440 S.Church Street,Suite 1200 - -- -- ----- ��'�K'.j11�``�� 3/13/2024 1 8/27/2021 MINING PERMIT LITHIUM Charlotte, NC28202-2075 - ------ SCALE - _ 01 CP-CO05 -- -_--- 704.338.6700 ISSUE DATE DESCRIPTION PROJECT NUMBER 10302238 1 - 50 N.C.B.E.L.S.License Number: F-0116