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Home My WebLink AboutNCG021049012 1 2 - --- -- -- -3 4 5 ----- ---- _ --- --6__.-------- -- __- ------ -- 7 ---- $ FIT !! OUTLET PROTECTION OP-204A �� CONSTRUCTION, MAINTENANCE AND INSPECTION NOTES TOP OF BERM. ELEV. 818.00 I - RIPRAP INFLOW PROTECTION � -------- -- ------ - �------- ---- - --- ---- - SEE DETAIL SHEET OOG-009 � �,�CX ! SEE SUMMARY SHEET OOG-005 1. INSPECT SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT 1/2 � `%�>%\ 4 20' WIDTH 4 ��j\�j\�j% � .�X I 1 ( �\/ � ---- �% � / / Cumulative Storage PROPOSED INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. //A//A�/Ar/�r/�r/ ? a O v/v/;ijA//A/jA// VAA/VA/ /VA/�/VA/VAi\•/ �0 0 0,VA/VA/VA'VA/V�VA/VA _ !! I PLANT BUILDING //\//\.,/\//\//\//\//\//\,, ELEV 816.50 819,OOi DRAINAGE AREA DELINEATION V/V/�,/V/,V/V/V/V/�� 2. REMOVE SEDIMENT AND RESTORE THE BASIN TO ITS ORIGINAL DIMENSIONS WHEN IT VA VA V\OVA \` VA VA VA \ VAw vjAA VA VA'VA VA VA VA VA VA AND EQUIPMENT iV�/jVA///�//�/�//�//%jv� �// i� O�Can c7--- C> _ v�iVA//V//\�////////////////////////// ACCUMULATES TO ONE-HALF THE DESIGN DEPTH. PLACED REMOVED SEDIMENT IN AN \/A/A,�\jAjAj�\jAjAjAjAAjAAjA,��✓ �✓_, % �. �, . ✓��✓�� ✓ �� /A/AAjVAjAy\jAAjAAjAAjAAjAAjAAj� TOP OF BERM o / / / / / / / / / / / / /, 818.00 18.00 a �i�� VAi� VAi�A'iV�i �V�iv /VA/VA/VA/VA/VA/�A/VA/VA/VA/VA/VA/VA/\ o a AREA WITH SEDIMENT CONTROLS. //A//A//A// / /A// //A//A//•//A//A// /� ;iiiv; / // / / /A//A//A//A//A//A// TOP OF BERM ELEV. 818.00 �A`v A V�iAAAAj/VAj/VAjAjAAjCA � A `A/�A/VAA./�A�AA�AA�AA�AA�V\AAA/VA/VA/VA/VA/VA. ..... � � , /j//j//j//j�/j//��/ /� EMERGENCY3. CHECK EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND INSPECT \ y�yA;�Aj�Aj�>Vv�;�A;�" ;TVAj� >��;;�j•�jAAjAAAVAAVA/AAAVVA\,AAAVAAVAAVAAVAA�AA,�A 817.00 817.00 /v��/�/�� A/V/�A�V/V/vV/V/V/V/V/V/V/V/w/ SPILLWAY 16.50 I A THE EMBANKMENT FOR PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS ;a ;\,\;,;;,\,\, .,\,\,\,�\,\,\,�\. POROUS BAFFLES / I IMMEDIATELY. REMOVE ALL TRASH AND OTHER DEBRIS FROM THE RISER AND POOL PRINCIPAL SEE DETAIL SHEET OOG-011 1 I q SECTION B 816.00 16.00 4 AREA. �......, ��A- SPILLWAY 15.50 \\ SILT FENCE i �1 I I _ 0 815.00 15.00 D SEE DETAIL SHEET OOG-008 /'� o I 4B � - ----- 12" CLASS 1 RIP-RAP CLEANOUT ELEV. ' t allo � I I a �' 814.00 00 814.25 w J �\\ m I I i a NON-WOVEN GEOTEXTILE FABRIC----- 9', ELEV. 81 6.50 , - PIPE 4C-N SEE BETWEEN ALL SOIL AND RIP-RAP. -COMPACTED FILL ON TOP OF I ( 813.00 813.00 `A �„�.,. +�•�■ I I CULVERT SUMMARY ANCHOR IN FABRIC BY RUNNING VIRGIN SOIL WITH TOP SOIL >EMERGENCY SPILLWAY / / A M , TABLE ON SHEET __ ALONG FACE OF SPREADER LIP TO REMOVED. SEE DETAIL THIS SHEET' 5) TOP OF FOOTER. -o ,- ,, o VIRGIN GROUND 812.00 ELEV. 816.50 �--- ,� o i I OOG-00 i��. T 7�` T"T` , T 7 7 / a / 3:1 / /AAjVAjAyVAjA�jAAjVAjAAjAAjAAjAAjAAjAAjAAj`�jAAjAAjAAjAAjAAjA 3:1 ELEV: 812 ± / // // // // � // // // / " / // // //V�/ �/ VA VA VA VA VA \� VA vA vVA VA VA VA'\A VA VA VA vVA VA VA VA vA VA VA BOTTOM OF POND o //A//AijA//A//A//A//A//A%/ //A//A//A//A//A//A//A//�/�A//A//A// //A// //A//A 811.00i POND BOTTOM /\/ /\/\/\/\/\/\/\/\/ /\/\/ ,/\/\ /\�'\/\/\/\/\/�/\, \/ \/\ i \\/\\/\\/\\/\\/ /\\j\\j\\j\\j\\ ELEV. 813.00 I ELEV: 813.00 /// // // // // //,// // // // // // // \ \ \ \ \ \ \ \ � SB-204 ' 1 INLET AT LOW POINT, PROVIDE � // // // //// // // // // //�//\//%`//�//\//\//\//\�%\//\!/\//\/%%//\//`//\//\//\//\\�/\//\//\//\//\�\ � \ \ \ \�` o /V/V/V/V/\/V/V/V/V V/ /\i V/v/V/�/V/V/V/V/V/\/V/\/v/V/V/V/ /V/V/\/V/V/V/\ 0 810.00� VA VA VA VA \ VA VA VA AA;AA VA A\ AA AA VA VA AA \ VA VA VA VA-VA VA AAA VA VA v\ VA VA`v\ VA �, VA`VA VA VA VA VA VA \A \ INLET PROTECTION V//V//V//V//V /V//V//V//V//C//V//\///V//V/V//C//V//vV//V//V//V//V//V//V//V//V/V//\///C�'V//V//V/V/\///V//V//V//V//C//V//V//V//V/�V�V 0.00 0.32 0.40 0.67 0.86 1.07 1.28 1.51 1.99 \ VAVAVAVA \ VAVAVAV\ VAVAVAVA \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ v\ \ \ \ v \ \ \ \ \ \ \ vA \ \ \ V DURING CONTRUCTION / / /\/\/ // // // / // // // // //\//\// v / / / / / \ � \ o I ��.°��\�\r ,\\,\ ,\\,\\ \ L\ \\,\\,\\,L\�\\�\,\\,\\.\\,\\�\��•� \,\\,\\ \,\\,\\ \,\\,�\\,\\,\\,,�\ \,\\L\Lt��. Cumulative Storage (ac-ft) -- ' KEY IN RIP-RAP- KEY IN RIP-RAP -- N i SECTION A \ a _ EMERGENCY SPILLWAY Cl) 48 OUTLET STRUCTURE WITH _ \\OUTLET PROTECTION OP-204 SKIMMER AND 50 LF OF 24" DOUBLE NOT TO SCALE Bastian Size I I SUMMARY SHEET OOG-005 �� / BARREL HDPE ' � C tirr V'oluraae tic-ft) SEE DETAILS THIS SHEET Elev. {rr�� ...Dept. (f�� Area� uttwia e ( ) ARM ASSEMBLY - - � ..�a � 813nCNO 0.{�Q' 12,599 0.f)0 814.0►J 1.t}0 14> 0.32 " _,_, ,__._ , 574.26 1.25 15i,i�45 f�. 815.00 2.Ct0 16,375 �9»�i7 BASIN ACCESS ROAD - a 0 , _ C » ENCLOSURE LOSURL _ \ �� 815_a6 2:5( 17�27 t7, 6 A - - C o � �� 18,158 1.�17 100 YEAR FLOODPLAIN - - I 8116.50 3. 1'9,130 1.25 HATER ENTRY UNIT T I 817.E 4.tIC� 20,E+07 1.51 PERSPECTIVE V I E W ��.� 5. � 22,013 ' 1.99 -- TOP OF BANK \ - WETLAND \ DISTURBANCE - >`I _ _ PROPOSED SITE PVC WENT � LIMIT OF D SCHEDULE 40 L_ _ a ACCESS ROAD PVC ELBOW (PIPE - PVC PIPE \ \ >y _____ - - PVC END CAP _ SEDIMENT BASIN 204 PRINCIPLE SPILLWAY > 30-FTSTRE 3" PIPE DIAMETER Skimmer r� S� Rp" Ifol 1t.29�6 vv. AM BUFFER _ - De-airr<�1 Simmravre T-"rrn DESIGN INFORMATION \ \` , �, \ �. ,; -: � =,,• WATER SURFACE Outlet: Sediment Basin 204 Principle Spillway, Drop Pipe 72 11 x� 50 C�a�ire�+d Skimmer 17�aa��awv�rre�a'� �.d�,a�' 3� 2 ��a� Riser Top Elev: 815. ft PLAN VIEW °`° .� "` PVC END CAP SCHEDULE 40 BtuonmerSe . i Riser Length: 4.0 ft `' Hl ead ti n Or five s Orifice Coefficient: 0.60 SCALE: 1" = 50' 3"PVC PIPE SEC TABLE FOR Weir Coefficient: 3.1 Length: 0.00 ft - Culvert e th� 5 50 0 50 100 ! PVC PIPS PIPE DIAMETER Culvert Diameter: 24.00 in 1�2" HOLES IN PIPE € i �ehiame�ter� 1_�`2+t 'arr SCALE IN FEET UNDERSIDE Culvert Invert In: 8012.50 ft CUTOFF TRENCH ALIGNS PVC TEE - 1_15"ORIFICE PLATE chua�l fice �liame�her� 9.Fv�0-��t Culvert Friction Coefficient: 0.01 --- PVC TEE INSTALL COLLAR WITH CORRUGATIONS WITH EMBANKMENT .< Acetual Skimmer few doweatn Time? 70 9 rs Culvert Entrance Loss Coefficient. 0.90 VERTICAL. COLLAR TO BE OF SAME GAGE AS THE PIPE WITH WHICH IT IS USED. FLEXIBLE v ____ Discharge: 42.13 cfs EXISTING GROUND NOTES: 9 HOSE - 1. ALL PVC PIPES ARE TO BE SCHEDULE 40 UNLESS Required Discharge: 37.20 cfs FILL MATERIAL I I i 1 1 I I I I I I I I BAND � OTHERWISE NOTED. III 1/2"X 2" SLOTTED 2' MINIMUM IF NOT �� 2. ALL JOINTS OF THE FLOTATION SECTION SHALL BE 2 HOLES @ 8" C.C. CUT TO BEDROCK a C . r SOLVENT WELDED. JOINTS OF SKIMMER SECTION NEED FOR 3/8"0 BOLTS a _.- _._-...-_.___ _ _„---- � " ' NOT BE WATER-TIGHT. B IQ I l01 I bl I� I l01 1 l0 ' 3. HDPE FLEXIBLE DRAIN PIPE IS TO BE ATTACHED TO THE 2"�- -• -►� OD OF PIPE 1 _ PIPE BARREL STRUCTURE WITH WATER-TIGHT 1 1 EN D V1 E1'`d FRONT VIEW CONNECTIONS. � I d1 1 101 1 101 III 1 101 101 -- - I I III 1 1 1 1 4. SKIMMER SIZES AND ORIFICE DIAMETERS ARE CALCULATED J 2' - BASED ON NCDEQ DESIGN METHODOLOGY AND WILL BE RISER BUOYANCY CALCULATION -- REVIEWED AND APPROVED BY THE ENGINEER ONCE A - ONE PIECE CONNECTING � SUITABLE EARTHEN SKIMMER SKIMMER SUPPLIER/MANUFACTURER HAS BEEN CHOSEN. DEMONSTRATE ADEQUATE STABILITY BY SHOWING THE DOWNWARD FORCE IS A BAND WELDED TO PIPE; MATERIAL CCOMPACTED TO CONTINUOUS WELD BOTH 95% OF STANDARD NOT TO SCALE MINIMUM OF 1.25 TIMES THE UPWARD FORCE. W: 4' MIN N. PROCTOR IMAX. DRY SIDES OF BAND CUT-OFF TRENCH DENSITY WITHIN ±2% DOWNWARD FORCE (STRUCTURE WEIGHT) > 1.25 x UPWARD FORCE (BUOYANCY) ANTI-SEEP COLLARS OPTIMUM MOISTURE NOT TO SCALE CONTENT 48" CONCRETE RISER TRASH RACK -- 10' T_OP OF WEIGHT = 10,147 Ib NOT TO SCALE RETRIEVAL ROPE-- ---- -- EMERGENCY SPILLWAY, SEE DETAIL THIS BERM WIDTH SHEET SKIMIMER, SEE DETAIL------- ANCHORED IN WHERE: 0- THIS SHEET THE SLOPE 48" CONCRETE - V FREEBOARD U RISER STRUCTURE RISER WEIGHT= 10,147 lb Q MIN. 1' FREEBOARD TOP OF BERM. ELEV 818.00 4'x4' (INSIDE SEDIMENT- -- --------- --- - DIMENSION) RISER CLEANOUT _ WEIGHT OF CONCENTRATE BASE _ (LENGTH x WIDTH x DEPTH)x UNIT STRUCTURE N GAGE ---- WEIGHT OF CONCRETE - -_ _- 0.5' DEPTH OF FLOW SEDIMENT CLEANOUT a❑ ❑oo❑❑ oo❑❑❑❑�` / `� / / / / / �/ / / /�% / EMERGENCY SPILLWAY ELEV 816.50 WEIGHT OF CONCRETE BASE _ (7.0 ft x 7.0 ft x 1.5 ft) x 150 Ib/ft3= 11,025 lb CONCRETE MARK, ELEV 814.25 goo❑ 000FI❑ Hon°°❑❑a RISER CREST ELEV. 815.50 //A��j V /w�/��/v��/v��/vv�/ VVV � � 1 - - BASE EMBANKMENT STABILIZED STRUCTURE WEIGHT 10,147 lb + 11,025 lb - 21,172 lb WITH VEGETATION 3 -CUT OFF TRENCH 3 BUOYANCY = DISPLACEMENT VOLUME OF RISER x 62.4 Ib/ft3 SKIMMER;- °` SEE DETAIL - OUTLET APRON BUOYANCY = 96 ft3 x 62.4 lb/ft'= 5990.4 lb THIS SHEET DOWNWARD FORCE (STRUCTURE WEIGHT > 1.25 x UPWARD FORCE (BUOYANCY) BOTTOM OF POND INV. ELEV 812.50 24" DIA. CMP ) _ __ _ _ _ o �Oo A � ---- -- 24" DIA. CMP - - --- __ i _-=TTT- o oO ELEV 813.00 j - �_- - VA VAA VAA ( 000 O� 21,172 lb > 5990.4 lb x 1.25 21,172 Ib > 7488 lb - ANTI-SEEP COLLAR 1. PORTLAND CEMENT CONCRETE (TYPE II RECOMMENDED) FOR THE INLET BASE 20' EVERY SEE DETAIL THIS SHEET SHALL HAVE A MINIMUM COMPRESSIVE STRENGTH OF 4,000 PSI. CONCRETE BASE -- --- ------- -- -- --- - - 7.0' x 7.0' x 1.5' 20' 2. WHERE CORRUGATED ALUMINUM OR ALUMINIZED STEEL PIPE IS USED, ALL z NOTES: AREAS WHERE THE PIPE IS TO BE IN CONTACT WITH CONCRETE SHALL BE PAINTED 1. FAIRCLOTH TYPE OR EQUIVALENT SKIMMER TO BE USED. WITH A BLACK BITUMINOUS ENAMEL PAINT. 2. INSTALL ANTI-VORTEX PLATE IN RISER STRUCTURE. L- -__1 RISER PLAN VIEW SEDIMENT RISER BASIN NOT TO SCALE NOT TO SCALE PROJECT MANAGER V. HAYNES, PE PIEDMONT LITHIUM CAROLINAS, INC. - ----_- _-- -- ----____-- �N.......R0� SEDIMENT BASIN S B-204, -- ��:••F�sS,o•..% : CAROLINA LITHIUM PROJECT PLAN VIEW & PROFILE DETAIL SAL 5 3/13/2024 REVISED PER DEMLR COMMENTS s - - - - - 3 - LITHIUM HYDROXIDE CONVERSION PLANT 4 1/23/2023 REVISED PER DEMLR COMMENTS 3 5/31/2022 REVISED PER DEMLR COMMENTS 9••'•.• N PIED , 0 T - - " •• '� ' GASTON COUNTY NORTH CAROLINA SHEET HDR Engineering Inc. of the Carolinas 2 12/08/2021 REVISED PER_D_E_MLR CO_MME_NT__S_____ ____ �'�i F •••••••••••• �� FILENAME - 01 CP-CO06 LITHIUM 440 S.Church Street,Suite 1200 1 8/27/2021 MINING PERMIT '' E K N`\.�`� 3/13/2024 Charlotte, NC 28202-2075 SCALE - 1„ - 50� 01 CP-NODE 704.33&6700 ISSUE DATE DESCRIPTION PROJECT NUMBER 10302238 N.C.B.E.L.S.License Number: F-0116