28 SP-2024-0356C - ACCX - Convention Center C1 Staff Report Part 2

Planning Commission – March 25, 2025

28 SP-2024-0356C - ACCX - Convention Center C1 Staff Report Part 2 — original pdf

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T E E R T S S E H C E N 0' R.O.W.) (8 EAST 4TH STREET (80' R.O.W.) EXISTING PROPOSED DESCRIPTION LEGEND EAST 3RD STREET (80' R.O.W.) T E E R T Y S RINIT T 0' R.O.W.) (8 EAST 2ND STREET (80' R.O.W.) /// /// /// /// /// /// / / / /// /// EAST 3RD STREET /// /// /// /// /// l l l l l l l l l l l l l l l l l l /// l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l T E E R T R S E D RIV E R 0 0 EAST 2ND STREET (80' R.O.W.) / / / / / / / / / / / / / / / l l l l l l l l l l l l l l l l l l l l l l l l l l l – K E E R R C E L L A W M B /// / / / / / / /// / / / / / / / / / /// /// /// /// / / / /// / / / / / / / / / / / / /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// E. CESAR CHAVEZ STREET (80' R.O.W.) /// / / / /// / / / / / / 0 0 /// / / / / / / /// THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. CONFIDENTIAL SP-2024-0356C 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D I E G A N A R D G N T S X E I I P A M A E R A I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 14 OF 41 M A 5 4 : 1 1 5 2 , 5 r a M n o a z u o b p y b d e i f i d o m g w d . X E M A D - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V 28 SP-2024-0356C - ACCX - Convention Center C129 of 56T E E R T S S E H C E N 0' R.O.W.) (8 EAST 4TH STREET (80' R.O.W.) EXISTING PROPOSED DESCRIPTION LEGEND /// 0 0 0 0 NOTES EXISTING PROPOSED DESCRIPTION LEGEND EAST 3RD STREET (80' R.O.W.) T E E R T Y S RINIT T 0' R.O.W.) (8 EAST 2ND STREET (80' R.O.W.) /// /// /// /// /// /// /// / / / /// /// /// /// /// /// /// / / / EAST 3RD STREET /// /// /// /// /// /// /// /// /// /// /// T E E R T R S E D RIV E R l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l /// l l l l l l l l l l l l l l l l l l l l l l l l 00 l l l l l l l l l l l l l l l l l l l l l l l l l 0 0 EAST 2ND STREET (80' R.O.W.) / / / / / / / / / / / / / / / K E E R R C E L L A W M B /// / / / / / / /// / / / / / / / / / /// /// /// /// / / / / / / / / / / / / / / / /// / / / /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// / / / /// /// /// E. CESAR CHAVEZ STREET (80' R.O.W.) /// / / / /// / / / / / / 0 0 /// / / / / / / /// 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D P A M A E R A E G A N A R D D E S O P O R P I I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N O T A V A C X E S S A M & I N A L P G N R E T A W E D I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 15 OF 41 M P 2 3 : 2 5 2 , 5 r a M n o a z u o b p y b d e i f i d o m g w d . R E T A W E D X E S S A M - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - - i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. CONFIDENTIAL SP-2024-0356C 28 SP-2024-0356C - ACCX - Convention Center C130 of 56T E E R T S S E H C E N 0' R.O.W.) (8 EAST 4TH STREET (80' R.O.W.) EXISTING PROPOSED DESCRIPTION LEGEND /// 0 0 0 0 /// /// /// /// /// /// /// / / / /// /// /// /// /// /// /// / / / EAST 3RD STREET /// /// /// /// /// /// /// /// /// /// /// T E E R T R S E D RIV E R l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l /// l l l l l l l l l l l l l l l l l l l l l l l l 00 l l l l l l l l l l l l l l l l l l l l l l l l l 0 0 EAST 2ND STREET (80' R.O.W.) / / / / / / / / / / / / / / / EAST 3RD STREET (80' R.O.W.) T E E R T Y S RINIT T 0' R.O.W.) (8 EAST 2ND STREET (80' R.O.W.) K E E R R C E L L A W M B /// / / / / / / /// / / / / / / / / / /// /// /// /// / / / /// / / / / / / /// / / / / / / / / / /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// /// E. CESAR CHAVEZ STREET (80' R.O.W.) /// / / / /// / / / / / / 0 0 /// / / / / / / /// 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D I I N O T A T N E M D E S & N O S O R E I N A L P L O R T N O C I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 16 OF 41 M A 9 1 : 9 5 2 , 5 r a M n o a z u o b p y b d e i f i d o m g w d . S E - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V EROSION & SEDIMENTATION NOTES: ’ THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. CONFIDENTIAL SP-2024-0356C 28 SP-2024-0356C - ACCX - Convention Center C131 of 56. P Y T T F 0 1 B . P Y T T F 0 1 PLAN 10 FT TYP. 10 FT TYP. SANDBAG IMPERMEABLE SHEETING SANDBAG OR EQUIVALENT A A IMPERMEABLE SHEETING 3 FT TYP. B . P Y T T F 0 1 1:1 OR FLATTER SIDE SLOPE SECTION A-A 2 IN 1/8 IN DIA. STEEL WIRE 4 IN STAPLE DETAIL B 3 FT TYP. BINDING WIRE STAPLES (2 PER BALE) STRAW BALE (TYP.) IMPERMEABLE SHEETING 10 FT TYP. STAKE (TYP.) EXISTING GRADE 200 mm (8'') MIN. ROADWAY 15 m (50') MIN. GRADE TO PREVENT RUNOFF FROM LEAVING SITE STANDARD SYMBOL TFD 150 mm X 150 mm (6'' X 6'' ) WIRE MESH STRUCTURE GEOTEXTILE FABRIC PROVIDE APPROPRIATE TRANSITION BETWEEN STABILIZED CONSTRUCTION ENTRANCE AND PUBLIC RIGHT-OF-WAY PROFILE 15 m (50') MIN. 300 mm (12'') FLO W 600 mm (2') IMPERMEABLE SHEETING STRAW BALE (TYP.) PLAN SECTION B-B WOOD OR METAL STAKES (2 PER BALE) R.O.W. 4 5 m 450 m (18'') ( 0 1 m 8 '' ) m FABRIC TOE-IN FLOW m 450 m (18'') 4 5 ( 0 1 m 8 '' ) m OPEN GRADED ROCK 75 mm-125 mm (3''-5'') FLOW m 450 m (18'') 4 5 ( 0 1 m 8 '' ) m TRENCHED IN 100 mm (4'') FLOW EXCAVATED WASHOUT STRUCTURE NOTE: CAN BE TWO STACKED BALES OR PARTIALLY EXCAVATED TO REACH 3 FT DEPTH WASHOUT STRUCTURE WITH STRAW BALES PLAN VIEW IMPERMEABLE SHEETING B 3 FT TYP. WOOD FRAME SECURELY FASTENED AROUND ENTIRE PERIMETER WITH TWO STAKES STAKE (TYP.) IMPERMEABLE SHEETING 10 FT TYP. SECTION B-B CONSTRUCTION SPECIFICATIONS 1. LOCATE WASHOUT STRUCTURE A MINIMUM OF 50 FEET AWAY FROM OPEN CHANNELS, STORM DRAIN INLETS, SENSITIVE AREAS, WETLANDS, BUFFERS AND WATER COURSES AND AWAY FROM CONSTRUCTION TRAFFIC. 2. SIZE WASHOUT STRUCTURE FOR VOLUME NECESSARY TO CONTAIN WASH WATER AND SOLIDS AND MAINTAIN AT LEAST 4 INCHES OF FREEBOARD. TYPICAL DIMENSIONS ARE 10 FEET X 10 FEET X 3 FEET DEEP. 3. PREPARE SOIL BASE FREE OF ROCKS OR OTHER DEBRIS THAT MAY CAUSE TEARS OR HOLES IN THE LINER. FOR LINER, USE 10 MIL OR THICKER UV RESISTANT, IMPERMEABLE SHEETING, FREE OF HOLES AND TEARS OR OTHER DEFECTS THAT COMPROMISE IMPERMEABILITY OF THE MATERIAL. 4. PROVIDE A SIGN FOR THE WASHOUT IN CLOSE PROXIMITY TO THE FACILITY. 5. KEEP CONCRETE WASHOUT STRUCTURE WATER TIGHT. REPLACE IMPERMEABLE LINER IF DAMAGED (E.G., RIPPED OR PUNCTURED). EMPTY OR REPLACE WASHOUT STRUCTURE THAT IS 75 PERCENT FULL, AND DISPOSE OF ACCUMULATED MATERIAL PROPERLY. DO NOT REUSE PLASTIC LINER. WET-VACUUM STORED LIQUIDS THAT HAVE NOT EVAPORATED AND DISPOSE OF IN AN APPROVED MANNER. PRIOR TO FORECASTED RAINSTORMS, REMOVE LIQUIDS OR COVER STRUCTURE TO PREVENT OVERFLOWS. REMOVE HARDENED SOLIDS, WHOLE OR BROKEN UP, FOR DISPOSAL OR RECYCLING. MAINTAIN RUNOFF DIVERSION AROUND EXCAVATED WASHOUT STRUCTURE UNTIL STRUCTURE IS REMOVED. NOTES: 1. STONE SIZE: 75-125 mm (3-5'') OPEN GRADED ROCK. 2. LENGTH: AS EFFECTIVE BUT NOT LESS THAN 15 m (50'). 3. THICKNESS: NOT LESS THAN 200 mm (8''). 4. WIDTH: NOT LESS THAN FULL WIDTH OF ALL POINTS OF INGRESS/EGRESS. 5. WASHING: WHEN NECESSARY, VEHICLE WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT PRIOR TO ENTRANCE ONTO PUBLIC ROADWAY. WHEN WASHING IS REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE AND DRAINS INTO AN APPROVED TRAP OR SEDIMENT BASIN. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING ANY STORM DRAIN, DITCH OR WATERCOURSE USING APPROVED METHODS. 6. MAINTENANCE: THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION THAT WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC ROADWAY. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE AS CONDITIONS DEMAND, AS WELL AS REPAIR AND CLEAN OUT OF ANY MEASURE DEVICES USED TO TRAP SEDIMENT. ALL SEDIMENTS THAT IS SPILLED, DROPPED, WASHED OR TRACKED ONTO PUBLIC ROADWAY MUST BE REMOVED IMMEDIATELY. 7. DRAINAGE: ENTRANCE MUST BE PROPERLY GRADED OR INCORPORATE A DRAINAGE SWALE TO PREVENT RUNOFF FROM LEAVING THE CONSTRUCTION SITE. WOOD FRAME PLAN WASHOUT STRUCTURE WITH WOOD PLANKS 1 OF 2 450 mm (18'') 150 mm (6'') 150 mm (6'') 450 mm (18'') 450 mm (18'') GENERAL NOTES 1. DIKES SHALL BE PLACED IN A ROW WITH ENDS TIGHTLY ABUTTING THE ADJACENT DIKE. 2. THE FABRIC COVER AND SKIRT SHALL BE A CONTINUOUS WRAPPING OF GEOTEXTILE. THE SKIRT SHALL BE A CONTINUOUS EXTENSION OF THE FABRIC ON THE UPSTREAM FACE. 3. THE SKIRT SHALL BE WEIGHTED WITH A CONTINUOUS LAYER OF 75-125 mm (3-5'') OPEN GRADED ROCK OR TOED-IN 150 mm (6'') WITH MECHANICALLY COMPACTED MATERIAL. OTHERWISE, THE ENTIRE STRUCTURE SHALL BE TRENCHED IN 100 mm (4''). 4. DIKES AND SKIRT SHALL BE SECURELY ANCHORED IN PLACE USING 150 mm (6'') WIRE STAPLES ON 600 mm (2') CENTERS ON BOTH EDGES AND SKIRT, OR STAKE USING 10M ( 3/8 '') DIAMETER RE-BAR WITH TEE ENDS. 5. FILTER MATERIAL SHALL BE LAPPED OVER ENDS 150 mm (6'') TO COVER DIKE TO DIKE JOINTS. JOINTS SHALL BE FASTENED WITH GALVANIZED SHOAT RINGS. 6. THE DIKE STRUCTURE SHALL BE MW40-150 mmX150 mm (6 GA. 6''X6'') WIRE MESH, 450 mm (18'') ON A SIDE. 7. INSPECTION SHALL BE MADE WEEKLY OR AFTER EACH RAINFALL EVENT AND REPAIR OR REPLACEMENT SHALL BE MADE PROMPTLY AS NEEDED BY THE CONTRACTOR. 8. ACCUMULATED SILT SHALL BE REMOVED WHEN IT REACHES A DEPTH OF 150 mm (6'') AND DISPOSED OF IN A MANNER WHICH WILL NOT CAUSE ADDITIONAL SILTATION. 9. AFTER THE DEVELOPMENT SITE IS COMPLETLY STABILIZED, THE DIKES AND ANY REMAINING SILT SHALL BE REMOVED. SILT SHALL BE DISPOSED OF AS INDICATED IN GENERAL NOTE 8 ABOVE. NOTE: FILTER FABRIC SHALL ENTIRELY COVER DIKE AND SKIRT. INSTALLATION DETAIL OPTIONS: 1. TOE-IN 150 mm (6'') MINIMUM. 2. WEIGHTED WITH 75 mm-125 mm (3''-5'') OPEN. 3. TRENCHED IN 100 mm (4''). 4. CONTINUOUS BACKING/PLANKS ON IMPERVIOUS SURFACES. CUT AWAY OF FILTER FABRIC 150 mmX25 mmX150 mm (6''X1''X6'') ANCHORS EVERY 600 mm (2') FLOW 600 mm (2') MIN. 450 mm (18'') MIN. R1 = 6 mm ( 1/4 '') R2 = 65 mm (2 1/2 '') R3 = 90 mm (3 1/2 '') R1 150 mm (6'') 450 mm (1'-6'') GRADE CONTROL R2 150 mm (6'') R3 300 mm (1'-0'') WOVEN WIRE SHEATHING ROCK BERM 600 mm (24'') MIN. FLOW 2 1 450 mm (18'') MIN. 175 mm (7'') 425 mm (1'-5'') SPILL R1 = 6 mm ( 1/4 '') R2 = 65 mm (2 1/2 '') R3 = 90 mm (3 1/2 '') R1 150 mm (6'') 450 mm (1'-6'') GRADE CONTROL 125 mm (5'') 100 mm (4'') CROSS SECTION 150 mm (6'') R2 R3 300 mm (1'-0'') STANDARD SYMBOL FOR ROCK BERM (RB) RB NOTES: 1. USE ONLY OPEN GRADED ROCK 75 to 125 mm (3 to 5'') DIAMETER FOR ALL CONDITIONS. 2. THE ROCK BERM SHALL BE SECURED WITH A WOVEN WIRE SHEATHING HAVING MAXIMUM 25 mm (1'') OPENING AND MINIMUM WIRE DIAMETER OF 12.9 mm (20 GAUGE). 3. THE ROCK BERM SHALL BE INSPECTED DAILY OR AFTER EACH RAIN, AND THE STONE AND/OR FABRIC CORE-WOVEN SHEATHING SHALL BE REPLACED WHEN THE STRUCTURE CEASES TO FUNCTION AS INTENDED, DUE TO SEDIMENT ACCUMULATION AMONG THE ROCKS, WASHOUT, CONSTRUCTION TRAFFIC DAMAGE, ETC. 4. IF SEDIMENT REACHES A DEPTH EQUAL TO ONE-THIRD THE HEIGHT OF THE BERM OR 150 mm (6''), WHICHEVER IS LESS, THE SEDIMENT SHALL BE REMOVED AND DISPOSED OF ON AN APPROVED SITE AND IN A MANNER THAT WILL NOT CREATE A SEDIMENTION PROBLEM. 5. WHEN THE SITE IS COMPLETELY STABILIZED,THE BERM AND ACCUMULATED SEDIMENT SHALL BE REMOVED AND DISPOSED OF IN AN APPROVED MANNER. 125 mm (5'') 25 mm (1'') R1 150 mm (6'') 175 mm (7'') 425 mm (1'-5'') CATCH GRADE CONTROL 125 mm (5'') I N O S V E R I . O N E T A D 200 mm (8'') 400 mm (1'-4'') LAYDOWN CURB 160 mm (6 1/4 '') 150 mm (6'') 150 mm (6'') 150 mm (6'') ONSITE CONCRETE WASHOUT STRUCTURE ONSITE CONCRETE WASHOUT STRUCTURE 2 OF 2 CITY OF AUSTIN CITY OF AUSTIN WATERSHED PROTECTION DEPARTMENT STABILIZED CONSTRUCTION ENTRANCE CITY OF AUSTIN CITY OF AUSTIN WATERSHED PROTECTION DEPARTMENT TRIANGULAR SEDIMENT FILTER DIKE RECORD COPY SIGNED BY J. PATRICK MURPHY 5/23/00 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THIS STANDARD. STANDARD NO. 641S-1 RECORD COPY SIGNED BY J. PATRICK MURPHY 3/27/00 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THIS STANDARD. STANDARD NO. 628S CITY OF AUSTIN CITY OF AUSTIN WATERSHED PROTECTION DEPARTMENT RECORD COPY SIGNED BY MORGAN BYARS ROCK BERM CITY OF AUSTIN DEPARTMENT OF PUBLIC WORKS AND TRANSPORTATION CURB AND GUTTER SECTION 8/24/2010 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THIS STANDARD. STANDARD NO. 639S-1 RECORD COPY SIGNED BY LINO RIVERA 9/29/99 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THIS STANDARD. STANDARD NO. 430S-1 SILT FENCE FABRIC STEEL OR WOOD FENCE POSTS MAX. 2.4 m (8') SPACING 2" x 4" WELDED WIRE BACKING SUPPORT FOR FABRIC (12.5 GA. WIRE) 600 mm (24'') 150 mm (6'') MIN. FLOW FABRIC TOE-IN TRENCH (BACKFILLED) STANDARD SYMBOL FOR SILT FENCE (SF) SF L= 150 mm (6'') MIN. TRENCH CROSS SECTION 1. STEEL OR WOOD POSTS WHICH SUPPORT THE SILT FENCE SHALL BE INSTALLED ON A SLIGHT ANGLE TOWARD THE ANTICIPATED RUNOFF SOURCE. POST MUST BE EMBEDDED A MINIMUM OF 300 mm (12 INCHES). IF WOOD POSTS CANNOT ACHIEVE 300 mm (12 inches) DEPTH, USE STEEL POSTS. 2. THE TOE OF THE SILT FENCE SHALL BE TRENCHED IN WITH A SPADE OR MECHANICAL TRENCHER, SO THAT THE DOWNSLOPE FACE OF THE TRENCH IS FLAT AND PERPENDICULAR TO THE LINE OF FLOW. 3. THE TRENCH MUST BE A MINIMUM OF 150 mm (6 inches) DEEP AND 150 mm (6 inches) WIDE TO ALLOW FOR THE SILT FENCE FABRIC TO BE LAID IN THE GROUND AND BACKFILLED WITH COMPACTED MATERIAL. 4. SILT FENCE FABRIC SHOULD BE SECURELY FASTENED TO EACH STEEL OR WOOD SUPPORT POST OR TO WOVEN WIRE , WHICH IS IN TURN ATTACHED TO THE STEEL OR WOOD FENCE POST. 5. INSPECTION SHALL BE MADE WEEKLY OR AFTER EACH RAINFALL EVENT AND REPAIR OR REPLACEMENT SHALL BE MADE PROMPTY AS NEEDED. 6. SILT FENCE SHALL BE REMOVED WHEN THE SITE IS COMPLETELY STABILIZED SO AS NOT TO BLOCK OR IMPEDE STORM FLOW OR DRAINAGE. 7. ACCUMULATED SILT SHALL BE REMOVED WHEN IT REACHES A DEPTH OF 150 mm (6 inches). THE SILT SHALL BE DISPOSED OF ON AN APPROVED SITE AND IN SUCH A MANNER THAT WILL NOT CONTRIBUTE TO ADDITIONAL SILTATION. CITY OF AUSTIN WATERSHED PROTECTION DEPARTMENT RECORD COPY SIGNED BY MORGAN BYARS SILT FENCE 09/01/2011 ADOPTED THE ARCHITECT/ENGINEER ASSUMES RESPONSIBILITY FOR APPROPRIATE USE OF THIS STANDARD. STANDARD NO. 642S-1 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I I N O T A T N E M D E S & N O S O R E I I S L A T E D L O R T N O C I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 17 OF 41 M A 4 5 : 8 5 2 , 5 r a M l l n o y e g n a m y b d e i f i d o m g w d . L T D S E - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V CONFIDENTIAL SP-2024-0356C 28 SP-2024-0356C - ACCX - Convention Center C132 of 56APPENDIX P-1 - EROSION CONTROL NOTES THE VEGETATIVE STABILIZATION OF AREAS DISTURBED BY CONSTRUCTION SHALL BE AS FOLLOWS: 3.6.1 TREE PROTECTION REQUIREMENTS MONITORING PERFORMANCE OF DEWATERING SYSTEM. HAVING JURISDICTION. 4. INCLUDE WRITTEN PLAN FOR DEWATERING OPERATIONS INCLUDING 1. OBSERVE AND RECORD DAILY ELEVATION OF GROUND WATER AND TEMPORARY VEGETATIVE STABILIZATION: 1. FROM SEPTEMBER 15 TO MARCH 1, SEEDING SHALL BE WITH OR INCLUDE A COOL SEASON COVER CROP: (WESTERN WHEATGRASS ( PASCOPYRUM SMITHII ) AT 5.6 POUNDS PER ACRE, OATS ( AVENA SATIVA ) AT 4.0 POUNDS PER ACRE, CEREAL RYE GRAIN ( SECALE CEREALE ) AT 45 POUNDS PER ACRE. CONTRACTOR MUST ENSURE THAT ANY SEED APPLICATION REQUIRING A COOL SEASON COVER CROP DOES NOT UTILIZE ANNUAL RYEGRASS ( LOLIUM MULTIFLORUM ) OR PERENNIAL RYEGRASS ( LOLIUM PERENNE ). COOL SEASON COVER CROPS ARE NOT PERMANENT EROSION CONTROL. FROM MARCH 2 TO SEPTEMBER 14, SEEDING SHALL BE WITH HULLED BERMUDA AT A RATE OF 45 POUNDS PER ACRE OR A NATIVE PLANT SEED MIX CONFORMING TO ITEM 604S OR 609S. 2. A. FERTILIZER SHALL BE APPLIED ONLY IF WARRANTED BY A SOIL TEST AND SHALL CONFORM TO ITEM NO. 606S, FERTILIZER. FERTILIZATION SHOULD NOT OCCUR WHEN RAINFALL IS EXPECTED OR DURING SLOW PLANT GROWTH OR DORMANCY. CHEMICAL FERTILIZER MAY NOT BE APPLIED IN THE CRITICAL WATER QUALITY ZONE. B. HYDROMULCH SHALL COMPLY WITH TABLE 1, BELOW. C. TEMPORARY EROSION CONTROL SHALL BE ACCEPTABLE WHEN THE GRASS HAS GROWN AT LEAST 1½ INCHES HIGH WITH A MINIMUM OF 95% TOTAL COVERAGE SO THAT ALL AREAS OF A SITE THAT RELY ON VEGETATION FOR TEMPORARY STABILIZATION ARE UNIFORMLY VEGETATED, AND PROVIDED THERE ARE NO BARE SPOTS LARGER THAN 10 SQUARE FEET. D. WHEN REQUIRED, NATIVE PLANT SEEDING SHALL COMPLY WITH REQUIREMENTS OF THE CITY OF AUSTIN ENVIRONMENTAL CRITERIA MANUAL, AND STANDARD SPECIFICATION 604S OR 609S. TABLE 1: HYDROMULCHING FOR TEMPORARY VEGETATIVE STABILIZATION 0-3 MONTHS TYPICAL APPLICATIONS APPLICATION RATES MODERATE SLOPES; FROM FLAT TO 3:1 1,500 TO 2,000 LBS PER ACRE MATERIAL DESCRIPTION LONGEVITY 100% OR ANY BLEND OF WOOD, CELLULOSE, STRAW, AND/OR COTTON PLANT MATERIAL (EXCEPT NO MULCH SHALL EXCEED 30% PAPER) 70% OR GREATER WOOD/STRAW 30% OR LESS PAPER OR NATURAL FIBERS PERMANENT VEGETATIVE STABILIZATION: 1. FROM SEPTEMBER 15 TO MARCH 1, SEEDING IS CONSIDERED TO BE TEMPORARY STABILIZATION ONLY. IF COOL SEASON COVER CROPS EXIST WHERE PERMANENT VEGETATIVE STABILIZATION IS DESIRED, THE GRASSES SHALL BE MOWED TO A HEIGHT OF LESS THAN ONE-HALF (½) INCH AND THE AREA SHALL BE RE-SEEDED IN ACCORDANCE WITH TABLE 2 BELOW. ALTERNATIVELY, THE COOL SEASON COVER CROP CAN BE MIXED WITH BERMUDA GRASS OR NATIVE SEED AND INSTALLED TOGETHER, UNDERSTANDING THAT GERMINATION OF WARM-SEASON SEED TYPICALLY REQUIRES SOIL TEMPERATURES OF 60 TO 70 DEGREES. FROM MARCH 2 TO SEPTEMBER 14, SEEDING SHALL BE WITH HULLED BERMUDA AT A RATE OF 45 POUNDS PER ACRE WITH A PURITY OF 95% AND A MINIMUM PURE LIVE SEED (PLS) OF 0.83. BERMUDA GRASS IS A WARM SEASON GRASS AND IS CONSIDERED PERMANENT EROSION CONTROL. PERMANENT VEGETATIVE STABILIZATION CAN ALSO BE ACCOMPLISHED WITH A NATIVE PLANT SEED MIX CONFORMING TO ITEM 604S OR 609S. A. FERTILIZER USE SHALL FOLLOW THE RECOMMENDATION OF A SOIL TEST. SEE ITEM 606S, FERTILIZER. APPLICATIONS OF FERTILIZER (AND PESTICIDE) ON CITY-OWNED AND MANAGED PROPERTY REQUIRES THE YEARLY SUBMITTAL OF A PESTICIDE AND FERTILIZER APPLICATION RECORD, ALONG WITH A CURRENT COPY OF THE APPLICATOR'S LICENSE. FOR CURRENT COPY OF THE RECORD TEMPLATE CONTACT THE CITY OF AUSTIN'S IPM COORDINATOR. B. HYDROMULCH SHALL COMPLY WITH TABLE 2, BELOW. C. WATER THE SEEDED AREAS IMMEDIATELY AFTER INSTALLATION TO ACHIEVE GERMINATION AND A HEALTHY STAND OF PLANTS THAT CAN ULTIMATELY SURVIVE WITHOUT SUPPLEMENTAL WATER. APPLY THE WATER UNIFORMLY TO THE PLANTED AREAS WITHOUT CAUSING DISPLACEMENT OR EROSION OF THE MATERIALS OR SOIL. MAINTAIN THE SEEDBED IN A MOIST CONDITION FAVORABLE FOR PLANT GROWTH. ALL WATERING SHALL COMPLY WITH CITY CODE CHAPTER 6-4 (WATER CONSERVATION), AT RATES AND FREQUENCIES DETERMINED BY A LICENSED IRRIGATOR OR OTHER QUALIFIED PROFESSIONAL, AND AS ALLOWED BY THE AUSTIN WATER UTILITY AND CURRENT WATER RESTRICTIONS AND WATER CONSERVATION INITIATIVES. D. PERMANENT EROSION CONTROL SHALL BE ACCEPTABLE WHEN THE GRASS HAS GROWN AT LEAST 1½ INCHES HIGH WITH A MINIMUM OF 95 PERCENT FOR THE NON-NATIVE MIX, AND 95 PERCENT COVERAGE FOR THE NATIVE MIX SO THAT ALL AREAS OF A SITE THAT RELY ON VEGETATION FOR STABILITY MUST BE UNIFORMLY VEGETATED, AND PROVIDED THERE ARE NO BARE SPOTS LARGER THAN 10 SQUARE FEET. E. WHEN REQUIRED, NATIVE PLANT SEEDING SHALL COMPLY WITH REQUIREMENTS OF THE CITY OF AUSTIN ENVIRONMENTAL CRITERIA MANUAL, ITEMS 604S AND 609S. TABLE 2: HYDROMULCHING FOR PERMANENT VEGETATIVE STABILIZATION MATERIAL DESCRIPTION LONGEVITY APPLICATION RATES BONDED FIBER MATRIX (BFM) FIBER REINFORCE D MATRIX (FRM) 80% ORGANIC DEFIBRATED FIBERS 10% TACKIFIER 6 MONTHS TYPICAL APPLICATIONS ON SLOPES UP TO 2:1 AND EROSIVE SOIL CONDITIONS 65% ORGANIC DEFIBRATED FIBERS 25% REINFORCING FIBERS OR LESS 10% TACKIFIER UP TO 12 MONTHS ON SLOPES UP TO 1:1 AND EROSIVE SOIL CONDITIONS 2500 TO 4000 LBS PER ACRE (SEE MANUFACTURERS RECOMMENDATIONS) 3000 TO 4500 LBS PER ACRE (SEE MANUFACTURERS RECOMMENDATIONS) 10. DEVELOPER INFORMATION: OWNER CITY OF AUSTIN PHONE # (512) 978-4000 ADDRESS P.O. BOX 1088, AUSTIN, TX, 78767-1088 OWNER'S REPRESENTATIVE RESPONSIBLE FOR PLAN ALTERATIONS: GARZA EMC, LLC. PHONE # (512) 298-3284 PERSON OR FIRM RESPONSIBLE FOR EROSION/SEDIMENTATION CONTROL MAINTENANCE: (TO BE DETERMINED PRIOR TO CONSTRUCTION) PHONE # PERSON OR FIRM RESPONSIBLE FOR TREE/NATURAL AREA PROTECTION MAINTENANCE: (TO BE DETERMINED PRIOR TO CONSTRUCTION) PHONE # 11. THE CONTRACTOR SHALL NOT DISPOSE OF SURPLUS EXCAVATED MATERIAL FROM THE SITE WITHOUT NOTIFYING THE DEVELOPMENT SERVICES DEPARTMENT AT 512-974-2278 AT LEAST 48 HOURS PRIOR WITH THE LOCATION AND A COPY OF THE PERMIT ISSUED TO RECEIVE THE MATERIAL. 1. 2. - - - - - - - - - - - - - 3. 5. 6. 8. 9. - - THE CONTRACTOR SHALL INSTALL EROSION/SEDIMENTATION CONTROLS, TREE/NATURAL AREA PROTECTIVE FENCING, AND CONDUCT "PRE-CONSTRUCTION" TREE FERTILIZATION (IF APPLICABLE) PRIOR TO ANY SITE PREPARATION WORK (CLEARING, GRUBBING OR EXCAVATION). THE PLACEMENT OF EROSION/SEDIMENTATION CONTROLS SHALL BE IN ACCORDANCE WITH THE ENVIRONMENTAL CRITERIA MANUAL AND THE APPROVED EROSION AND SEDIMENTATION CONTROL PLAN. THE COA ESC PLAN SHALL BE CONSULTED AND USED AS THE BASIS FOR A TPDES REQUIRED SWPPP. IF A SWPPP IS REQUIRED, IT SHALL BE AVAILABLE FOR REVIEW BY THE CITY OF AUSTIN ENVIRONMENTAL INSPECTOR AT ALL TIMES DURING CONSTRUCTION, INCLUDING AT THE PRE-CONSTRUCTION MEETING. THE CHECKLIST BELOW CONTAINS THE BASIC ELEMENTS THAT SHALL BE REVIEWED FOR PERMIT APPROVAL BY COA EV PLAN REVIEWERS AS WELL AS COA EV INSPECTORS. PLAN SHEETS SUBMITTED TO THE CITY OF AUSTIN MUST SHOW THE FOLLOWING: DIRECTION OF FLOW DURING GRADING OPERATIONS. LOCATION, DESCRIPTION, AND CALCULATIONS FOR OFF-SITE FLOW AREAS THAT WILL NOT BE DISTURBED; NATURAL FEATURES TO BE DIVERSION STRUCTURES. PRESERVED. DELINEATION OF CONTRIBUTING DRAINAGE AREA TO EACH PROPOSED BMP (E.G., SILT FENCE, SEDIMENT BASIN, ETC.). LOCATION AND TYPE OF E&S BMPS FOR EACH PHASE OF DISTURBANCE. CALCULATIONS FOR BMPS AS REQUIRED. LOCATION AND DESCRIPTION OF TEMPORARY STABILIZATION MEASURES. LOCATION OF ON-SITE SPOILS, DESCRIPTION OF HANDLING AND DISPOSAL OF BORROW MATERIALS, AND DESCRIPTION OF ON-SITE PERMANENT SPOILS DISPOSAL AREAS, INCLUDING SIZE, DEPTH OF FILL AND REVEGETATION PROCEDURES. DESCRIBE SEQUENCE OF CONSTRUCTION AS IT PERTAINS TO ESC INCLUDING THE FOLLOWING ELEMENTS: 1. INSTALLATION SEQUENCE OF CONTROLS (E.G. PERIMETER CONTROLS, THEN SEDIMENT BASINS, THEN TEMPORARY STABILIZATION, THEN PERMANENT, ETC.) 2. PROJECT PHASING IF REQUIRED (LOC GREATER THAN 25 ACRES) 3. SEQUENCE OF GRADING OPERATIONS AND NOTATION OF TEMPORARY STABILIZATION MEASURES TO BE USED 4. SCHEDULE FOR CONVERTING TEMPORARY BASINS TO PERMANENT WQ 5. SCHEDULE FOR REMOVAL OF TEMPORARY CONTROLS 6. - ANTICIPATED MAINTENANCE SCHEDULE FOR TEMPORARY CONTROLS CATEGORIZE EACH BMP UNDER ONE OF THE FOLLOWING AREAS OF BMP ACTIVITY AS DESCRIBED BELOW: 3.1 MINIMIZE DISTURBED AREA AND PROTECT NATURAL FEATURES AND CONTROLS SOIL 3.2 CONTROL STORMWATER FLOWING ONTO AND THROUGH THE PROJECT 3.3 STABILIZE SOILS 3.4 PROTECT SLOPES 3.5 PROTECT STORM DRAIN INLETS 3.6 ESTABLISH PERIMETER CONTROLS AND SEDIMENT BARRIERS 3.7 RETAIN SEDIMENT ON-SITE AND CONTROL DEWATERING PRACTICES 3.8 ESTABLISH STABILIZED CONSTRUCTION EXITS 3.9 ANY ADDITIONAL BMPS 2. NOTE THE LOCATION OF EACH BMP ON YOUR SITE MAP(S). FOR ANY STRUCTURAL BMPS, YOU SHOULD PROVIDE DESIGN SPECIFICATIONS AND DETAILS AND REFER TO THEM. FOR MORE INFORMATION, SEE CITY OF AUSTIN ENVIRONMENTAL CRITERIA MANUAL 1.4. THE PLACEMENT OF TREE/NATURAL AREA PROTECTIVE FENCING SHALL BE IN ACCORDANCE WITH THE CITY OF AUSTIN STANDARD NOTES FOR TREE AND NATURAL AREA PROTECTION AND THE APPROVED GRADING/TREE AND NATURAL AREA PLAN. 4. A PRE-CONSTRUCTION CONFERENCE SHALL BE HELD ON-SITE WITH THE CONTRACTOR, DESIGN ENGINEER/PERMIT APPLICANT AND ENVIRONMENTAL INSPECTOR AFTER INSTALLATION OF THE EROSION/SEDIMENTATION CONTROLS, TREE/NATURAL AREA PROTECTION MEASURES AND "PRE-CONSTRUCTION" TREE FERTILIZATION (IF APPLICABLE) PRIOR TO BEGINNING ANY SITE PREPARATION WORK. THE OWNER OR OWNER'S REPRESENTATIVE SHALL NOTIFY THE DEVELOPMENT SERVICES DEPARTMENT, 512-974-2278 OR BY EMAIL AT ENVIRONMENTAL.INSPECTIONS@AUSTINTEXAS.GOV, AT LEAST THREE DAYS PRIOR TO THE MEETING DATE. COA APPROVED ESC PLAN AND TPDES SWPPP (IF REQUIRED) SHOULD BE REVIEWED BY COA EV INSPECTOR AT THIS TIME. ANY MAJOR VARIATION IN MATERIALS OR LOCATIONS OF CONTROLS OR FENCES FROM THOSE SHOWN ON THE APPROVED PLANS WILL REQUIRE A REVISION AND MUST BE APPROVED BY THE REVIEWING ENGINEER, ENVIRONMENTAL SPECIALIST OR CITY ARBORIST AS APPROPRIATE. MAJOR REVISIONS MUST BE APPROVED BY AUTHORIZED COA STAFF. MINOR CHANGES TO BE MADE AS FIELD REVISIONS TO THE EROSION AND SEDIMENTATION CONTROL PLAN MAY BE REQUIRED BY THE ENVIRONMENTAL INSPECTOR DURING THE COURSE OF CONSTRUCTION TO CORRECT CONTROL INADEQUACIES. THE CONTRACTOR IS REQUIRED TO PROVIDE A CERTIFIED INSPECTOR THAT IS EITHER A LICENSED ENGINEER (OR PERSON DIRECTLY SUPERVISED BY THE LICENSED ENGINEER) OR CERTIFIED PROFESSIONAL IN EROSION AND SEDIMENT CONTROL (CPESC OR CPESC - IT), CERTIFIED EROSION, SEDIMENT AND STORMWATER - INSPECTOR (CESSWI OR CESSWI - IT) OR CERTIFIED INSPECTOR OF SEDIMENTATION AND EROSION CONTROLS (CISEC OR CISEC - IT) CERTIFICATION TO INSPECT THE CONTROLS AND FENCES AT WEEKLY OR BI-WEEKLY INTERVALS AND AFTER ONE-HALF (½) INCH OR GREATER RAINFALL EVENTS TO INSURE THAT THEY ARE FUNCTIONING PROPERLY. THE PERSON(S) RESPONSIBLE FOR MAINTENANCE OF CONTROLS AND FENCES SHALL IMMEDIATELY MAKE ANY NECESSARY REPAIRS TO DAMAGED AREAS. SILT ACCUMULATION AT CONTROLS MUST BE REMOVED WHEN THE DEPTH REACHES SIX (6) INCHES OR ONE-THIRD (⅓) OF THE INSTALLED HEIGHT OF THE CONTROL WHICHEVER IS LESS. 7. PRIOR TO FINAL ACCEPTANCE BY THE CITY, HAUL ROADS AND WATERWAY CROSSINGS CONSTRUCTED FOR TEMPORARY CONTRACTOR ACCESS MUST BE REMOVED, ACCUMULATED SEDIMENT REMOVED FROM THE WATERWAY AND THE AREA RESTORED TO THE ORIGINAL GRADE AND REVEGETATED. ALL LAND CLEARING DEBRIS SHALL BE DISPOSED OF IN APPROVED SPOIL DISPOSAL SITES. ALL WORK MUST STOP IF A VOID IN THE ROCK SUBSTRATE IS DISCOVERED WHICH IS; ONE SQUARE FOOT IN TOTAL AREA; BLOWS AIR FROM WITHIN THE SUBSTRATE AND/OR CONSISTENTLY RECEIVES WATER DURING ANY RAIN EVENT. AT THIS TIME IT IS THE RESPONSIBILITY OF THE PROJECT MANAGER TO IMMEDIATELY CONTACT A CITY OF AUSTIN ENVIRONMENTAL INSPECTOR FOR FURTHER INVESTIGATION. TEMPORARY AND PERMANENT EROSION CONTROL: ALL DISTURBED AREAS SHALL BE RESTORED AS NOTED BELOW: A. ALL DISTURBED AREAS TO BE REVEGETATED ARE REQUIRED TO PLACE A MINIMUM OF SIX (6) INCHES OF TOPSOIL [SEE STANDARD SPECIFICATION ITEM NO. 601S.3(A)]. DO NOT ADD TOPSOIL WITHIN THE CRITICAL ROOT ZONE OF EXISTING TREES. TOPSOIL SALVAGED FROM THE EXISTING SITE IS ENCOURAGED FOR USE, BUT IT SHOULD MEET THE STANDARDS SET FORTH IN 601S. AN OWNER/ENGINEER MAY PROPOSE USE OF ONSITE SALVAGED TOPSOIL WHICH DOES NOT MEET THE CRITERIA OF STANDARD SPECIFICATION 601S BY PROVIDING A SOIL ANALYSIS AND A WRITTEN STATEMENT FROM A QUALIFIED PROFESSIONAL IN SOILS, LANDSCAPE ARCHITECTURE, OR AGRONOMY INDICATING THE ONSITE TOPSOIL WILL PROVIDE AN EQUIVALENT GROWTH MEDIA AND SPECIFYING WHAT, IF ANY, SOIL AMENDMENTS ARE REQUIRED. - SOIL AMENDMENTS SHALL BE WORKED INTO THE EXISTING ONSITE TOPSOIL WITH A DISC OR TILLER TO CREATE A WELL-BLENDED MATERIAL. A. DURATION OF TREE PROTECTION 1. INSTALLATION TREE PROTECTION SHALL BE INSTALLED PRIOR TO THE START OF ANY SITE WORK, INCLUDING DEMOLITION OR SITE PREPARATION, AND MAINTAINED CONTINUOUSLY THROUGHOUT THE PROJECT. 2. REMOVAL TREE PROTECTION SHALL BE REMOVED AT THE END OF THE PROJECT AFTER ALL CONSTRUCTION AND FINAL GRADING IS COMPLETE, BUT BEFORE FINAL INSPECTION. ANY PREMATURE REMOVAL OR FAILURE OF TREE PROTECTION CAN LEAD TO CRITICAL ROOT ZONE IMPACTS AS DESCRIBED IN ECM 3.5.2 AND MAY REQUIRE REMEDIAL TREE CARE. IT IS THE PERMIT HOLDER'S RESPONSIBILITY TO AVOID DAMAGE TO PRESERVED TREES WHERE TREE PROTECTION HAS BEEN REMOVED OR NOT INSTALLED. B. FENCING SPECIFICATIONS 1. MATERIAL REQUIREMENTS FENCING IS THE PRIMARY METHOD OF TREE PROTECTION. FENCING IS INTENDED TO PREVENT ACCESS TO THE CRITICAL ROOT ZONE. TREE FENCING SHALL BE CHAIN-LINK MESH WITH A MINIMUM HEIGHT OF 5 FEET. FENCING SHALL BE INSTALLED ON STEEL T-POSTS WITH A MAXIMUM SPACING OF 10 FEET BETWEEN THE POSTS. MORE ROBUST OR EXISTING PERMANENT FENCING MAY BE APPROVED AS AN ALTERNATIVE TO CHAIN-LINK FENCING. PLASTIC FENCING MATERIAL SHALL NOT BE USED AS TREE PROTECTION. 2. LOCATION OF FENCING FENCING SHALL BE INSTALLED AROUND OR BEYOND THE CRITICAL ROOT ZONE OF ALL PRESERVED TREES OR ANY NATURAL AREAS DESIGNATED FOR PRESERVATION. FENCING MUST BE CONTINUOUS AND CREATE A CLOSED, INACCESSIBLE AREA OF ROOT ZONE PROTECTION. 3. MAINTENANCE OF FENCED AREAS FENCING SHALL NOT BE TEMPORARILY MOVED OR REMOVED DURING DEVELOPMENT WITHOUT PRIOR AUTHORIZATION. THERE SHALL BE MINIMAL SLACK OR SAGGING IN THE FENCE. THE FENCED CRITICAL ROOT ZONE SHALL NOT BE USED FOR TOOL OR MATERIAL STORAGE OF ANY KIND AND SHALL BE KEPT FREE OF LITTER. 4. EXCEPTIONS TO FENCING REQUIREMENTS ANY SECTION OF THE CRITICAL ROOT ZONE NOT PROTECTED BY FENCING OR COVERED BY EXISTING HARDSCAPE REQUIRES MULCH (SEE ECM 3.6.1.C). EXCEPTIONS TO THE CRZ FENCING REQUIREMENT SHALL BE JUSTIFIED BY SITE-SPECIFIC CONSIDERATIONS. SOME EXCEPTIONS ARE FOR AREAS: I. THAT HAVE BEEN APPROVED FOR IMPACTS, SUCH AS THE FOOTPRINT OF A BUILDING; II. COVERED BY EXISTING HARDSCAPE, SUCH AS A PATIO OR DRIVEWAY (NOTE: IF HARDSCAPE IS REMOVED THE EXPOSED SOIL BENEATH BECOMES SUBJECT TO TREE PROTECTION REQUIREMENTS); III. REQUIRED FOR ACCESS TO THE WORK AREA; AND IV. APPROVED FOR USE AS A STAGING AREA. WITHIN THE HALF CRZ, FENCING REQUIREMENTS WILL ONLY BE MODIFIED FOR EXISTING HARDSCAPE OR TO ALLOW AN ACCESS PATH ADJACENT TO APPROVED STRUCTURES (SEE ECM 3.6.1.C.3). CRZ FENCING MODIFICATIONS SHALL BE SHOWN ON THE DEVELOPMENT PLANS OR APPROVED BY THE INSPECTOR. C. MULCH SPECIFICATIONS 1. MATERIAL REQUIREMENTS MULCH IS REQUIRED IN ANY SECTION OF THE CRITICAL ROOT ZONE THAT IS NOT PROTECTED BY FENCING OR UNDER EXISTING HARDSCAPE AND HAS NOT BEEN APPROVED FOR IMPACTS (SUCH AS BUILDING FOOTPRINT OR DRIVEWAY). MULCH USED FOR TREE PROTECTION SHALL BE ANY NATURAL WOOD TYPE. ROUGH SINGLE GRIND MULCH, WHICH RESISTS COMPACTION BETTER THAN DOUBLE GRIND AND IS USUALLY LESS EXPENSIVE IS PREFERRED BUT ANY NATURAL WOOD TYPE IS ACCEPTABLE. DYED MULCH OR MULCH MADE FROM NON-BIOLOGICAL MATERIAL SUCH AS RUBBER OR STONE SHALL NOT BE USED AS TREE PROTECTION. 2. DEPTH OF MULCH MULCH SHALL BE INSTALLED TO A MINIMUM DEPTH OF 8 INCHES. MULCH MAY NEED TO BE PERIODICALLY REPLENISHED DEPENDING ON THE DURATION OF THE PROJECT. SINCE EXCESSIVE MULCH IS HARMFUL TO TREES, MULCH SHALL NOT BE INSTALLED TO A DEPTH GREATER THAN 12 INCHES. MULCH USED FOR TREE PROTECTION SHALL BE REMOVED AT THE END OF THE PROJECT. MULCH SHALL NEVER BE PILED AGAINST TREE TRUNKS. 3. MULCH WITHIN THE HALF CRZ WHEN MULCH IS USED AS ALTERNATIVE PROTECTION WITHIN THE HALF CRITICAL ROOT ZONE IT SHALL BE TOPPED BY DECKING TO PROVIDE ADDITIONAL PROTECTION AGAINST COMPACTION. 4. EXCEPTIONS TO MULCH REQUIREMENTS MULCH IS NOT REQUIRED WITHIN FENCED SECTIONS OF THE CRITICAL ROOT ZONE WHERE EXISTING TURF OR GROUND COVER IS PRESENT AND UNDISTURBED. SECTIONS OF BARE OR DISTURBED DIRT WITHIN THE FENCED CRZ SHALL BE COVERED BY A THREE-INCH LAYER OF MULCH. D. TRUNK AND BRANCH WRAPPING 1. TRUNK WRAP WRAPPING IS NOT REQUIRED OR RECOMMENDED FOR MOST PRESERVED TREES. WHEN NECESSARY, TRUNK WRAP SHALL BE INSTALLED TO PROTECT THE FIRST 8 FEET OF TREE HEIGHT WHENEVER PROTECTIVE FENCING IS LOCATED 5 FEET OR LESS FROM THE TRUNK OR WHEN FENCING CANNOT BE PLACED AROUND THE TREE. THIS WILL USUALLY ONLY BE THE CASE WHEN EXISTING HARDSCAPE PROVIDES HALF CRITICAL ROOT ZONE PROTECTION OR A STRUCTURE HAS BEEN APPROVED FOR CONSTRUCTION WITHIN THE HALF CRZ USING AN EXISTING HISTORICAL FOOTPRINT. THESE CIRCUMSTANCES CAN RESULT IN FENCING CLOSER TO THE TRUNK THAN WOULD OTHERWISE BE ALLOWED. BECAUSE TREES VARY IN FORM, 8 FEET IS A GENERAL GUIDELINE RATHER THAN AN ABSOLUTE STANDARD. MORE OR LESS HEIGHT OF PROTECTION MAY BE APPROPRIATE. 2. BRANCH WRAP BRANCH WRAP MAY BE REQUIRED WHEN A MAJOR LIMB IS OVER AN ACCESS ROUTE OR CLOSE TO A PROPOSED STRUCTURE. PROXIMITY OF SCAFFOLDING OR OTHER NECESSARY CONSTRUCTION EQUIPMENT NEEDS TO BE CONSIDERED. 3. MATERIAL REQUIREMENTS DIMENSIONAL LUMBER, SUCH AS 2X4S, SHALL BE ORIENTED PARALLEL TO AND CONTINUOUSLY AROUND THE TRUNK OR BRANCH AND SECURED IN PLACE BY TIGHTENING WIRES RUN AROUND THE OUTSIDE OF THE LUMBER. WRAPPING SHALL NEVER BE SECURED DIRECTLY TO THE TREE BY SCREWS OR OTHER MEANS. WRAPPING SHALL BE LOOSENED AND RETIGHTENED EVERY SIX MONTHS TO PREVENT THE TREE FROM BEING DAMAGED AS IT GROWS OUTWARDS. E. PROTECTION FOR NATURAL AREAS NATURAL AREAS INDICATED FOR PRESERVATION ON PLANS SHALL BE PROTECTED BY FENCING THAT MEETS THE STANDARDS FOR TREE FENCING IN THIS SECTION. ALTERNATIVE PROTECTION ALLOWED FOR TREES IS NOT ACCEPTABLE FOR NATURAL AREA PRESERVATION. FENCING SHALL BE INSTALLED AT THE LIMIT OF CONSTRUCTION LINE SHOWN ON PLANS. DEWATERING PART 1 - GENERAL 1.1 SUMMARY A. SECTION INCLUDES CONSTRUCTION DEWATERING. 1.2 PREINSTALLATION MEETINGS A. PREINSTALLATION CONFERENCE: CONDUCT CONFERENCE ONSITE. 1. VERIFY AVAILABILITY OF INSTALLER'S PERSONNEL, EQUIPMENT, AND FACILITIES NEEDED TO MAKE PROGRESS AND AVOID DELAYS. 2. REVIEW CONDITION OF SITE TO BE DEWATERED INCLUDING COORDINATION WITH TEMPORARY EROSION-CONTROL MEASURES AND TEMPORARY CONTROLS AND PROTECTIONS. 3. REVIEW GEOTECHNICAL REPORT. 4. REVIEW PROPOSED SITE CLEARING AND EXCAVATIONS. 5. REVIEW EXISTING UTILITIES AND SUBSURFACE CONDITIONS. 6. REVIEW OBSERVATION AND MONITORING OF DEWATERING SYSTEM. INCLUDE PLANS, ELEVATIONS, SECTIONS, AND DETAILS. 1.3 ACTION SUBMITTALS A. SHOP DRAWINGS: FOR DEWATERING SYSTEM. 1. 2. SHOW ARRANGEMENT, LOCATIONS, AND DETAILS OF WELLS AND WELL POINTS; LOCATION OF RISERS, HEADERS, FILTERS, PUMPS, POWER UNITS, AND DISCHARGE LINES; AND MEANS OF DISCHARGE, CONTROL OF SEDIMENT, AND DISPOSAL OF WATER. 3. INCLUDE LAYOUTS OF PIEZOMETERS AND FLOW-MEASURING DEVICES FOR 1. DESIGN DEWATERING SYSTEM, INCLUDING COMPREHENSIVE ENGINEERING DURING CONSTRUCTION SEQUENCE OF WELL AND WELL-POINT PLACEMENT COORDINATED WITH EXCAVATION SHORING AND BRACINGS AND CONTROL PROCEDURES TO BE ADOPTED IF DEWATERING PROBLEMS ARISE. 1.4 INFORMATIONAL SUBMITTALS A. FIELD QUALITY-CONTROL REPORTS. B. EXISTING CONDITIONS: USING PHOTOGRAPHS OR VIDEO RECORDINGS, SHOW EXISTING CONDITIONS OF ADJACENT CONSTRUCTION AND SITE IMPROVEMENTS THAT MIGHT BE MISCONSTRUED AS DAMAGE CAUSED BY DEWATERING OPERATIONS. SUBMIT BEFORE WORK BEGINS. C. RECORD DRAWINGS: IDENTIFY LOCATIONS AND DEPTHS OF CAPPED WELLS AND WELL POINTS AND OTHER ABANDONED-IN-PLACE DEWATERING EQUIPMENT. 1.5 QUALITY INSURANCE A. INSTALLER QUALIFICATIONS: AN EXPERIENCED INSTALLER THAT HAS PIEZOMETRIC WATER LEVELS IN OBSERVATION WELLS. 2. REPAIR OR REPLACE, WITHIN 24 HOURS, OBSERVATION WELLS THAT BECOME INACTIVE, DAMAGED, OR DESTROYED. IN AREAS WHERE OBSERVATION WELLS ARE NOT FUNCTIONS PROPERLY, SUSPEND CONSTRUCTION ACTIVITIES UNTIL RELIABLE OBSERVATIONS CAN BE MADE. ADD OR REMOVE WATER FROM OBSERVATION-WELL RISERS TO DEMONSTRATE THAT OBSERVATION WELLS ARE FUNCTIONING PROPERLY. 3. FILL OBSERVATION WELLS, REMOVE PIEZOMETERS, AND FILL HOLES WHEN DEWATERING IS COMPLETED. B. SURVEY-WORK BENCHMARKS: RESURVEY BENCHMARKS (WEEKLY) DURING DEWATERING AND MAINTAIN AN ACCURATE LOG OF SURVEYED ELEVATIONS FOR COMPARISON WITH ORIGINAL ELEVATIONS. PROMPTLY NOTIFY ARCHITECT IF CHANGES IN ELEVATIONS OCCUR OR IF CRACKS, SAGS, OR OTHER DAMAGE IS EVIDENT IN ADJACENT CONSTRUCTION. C. PROVIDE CONTINUAL OBSERVATION TO ENSURE THAT SUBSURFACE SOILS ARE NOT BEING REMOVED BY THE DEWATERING OPERATION. SPECIALIZED IN DESIGN OF DEWATERING SYSTEMS AND DEWATERING WORK. D. PREPARE REPORTS OF OBSERVATIONS. 1.6 FIELD CONDITIONS A. PROJECT-SITE INFORMATION: A GEOTECHNICAL REPORT HAS BEEN PREPARED 3.5 PROTECTION A. PROTECT AND MAINTAIN DEWATERING SYSTEM DURING DEWATERING B. PROMPTLY REPAIR DAMAGES TO ADJACENT FACILITIES CAUSED BY OPERATIONS. DEWATERING. FOR THIS PROJECT AND IS AVAILABLE FOR INFORMATION ONLY. THE OPINIONS EXPRESSED IN THIS REPORT ARE THOSE OF A GEOTECHNICAL ENGINEER AND REPRESENT INTERPRETATIONS OF SUBSOIL CONDITIONS, TESTS, AND RESULTS OF ANALYSES CONDUCTION BY A GEOTECHNICAL ENGINEER. OWNER IS NOT RESPONSIBLE FOR INTERPRETATIONS OF CONCLUSIONS DRAWN FROM THIS DATA. 1. MAKE ADDITIONAL TEST BORINGS AND CONDUCT OTHER EXPLORATORY OPERATIONS NECESSARY FOR DEWATERING ACCORDING TO THE PERFORMANCE REQUIREMENTS. 2. THE GEOTECHNICAL REPORT IS INCLUDED ELSEWHERE IN PROJECT MANUAL. B. SURVEY WORK: ENGAGE A QUALIFIED LAND SURVEYOR OR PROFESSIONAL ENGINEER TO SURVEY ADJACENT EXISTING BUILDINGS, STRUCTURES, AND SITE IMPROVEMENTS; ESTABLISH EXACT ELEVATIONS AT FIXED POINTS TO ACT AS BENCHMARKS. CLEARLY IDENTIFY BENCHMARKS AND RECORD EXISTING ELEVATIONS. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. DEWATERING PERFORMANCE: DESIGN, FURNISH, INSTALL, TEST, OPERATE, MONITOR, AND MAINTAIN DEWATERING SYSTEM OF SUFFICIENT SCOPE, SIZE, AND CAPACITY TO CONTROL HYDROSTATIC PRESSURES AND TO LOWER, CONTROL, REMOVE, AND DISPOSE OF GROUND WATER AND PERMIT EXCAVATION AND CONSTRUCTION TO PROCEED ON DRY, STABLE SUBGRADES. ANALYSIS BY A QUALIFIED PROFESSIONAL ENGINEER. 2. CONTINUOUSLY MONITOR AND MAINTAIN DEWATERING OPERATIONS TO ENSURE EROSION CONTROL, STABILITY OF EXCAVATIONS AND CONSTRUCTED SLOPES, PREVENTION OF FLOODING IN EXCAVATION, AND PREVENTION OF DAMAGE TO SUBGRADES AND PERMANENT STRUCTURES. 3. PREVENT SURFACE WATER FROM ENTERING EXCAVATION BY GRADINGS, DIKES, OR OTHER MEANS. 4. ACCOMPLISH DEWATERING WITHOUT DAMAGING EXISTING BUILDINGS, STRUCTURES, AND SITE IMPROVEMENTS ADJACENT TO EXCAVATION. 5. REMOVE DEWATERING SYSTEM WHEN NO LONGER REQUIRED FOR CONSTRUCTION. B. REGULATORY REQUIREMENTS: COMPLY WITH GOVERNING EPA NOTIFICATION REGULATIONS BEFORE BEGINNING DEWATERING. COMPLY WITH WATER- AND DEBRIS-DISPOSAL REGULATIONS OF THE CITY OF AUSTIN. PART 3 - EXECUTION 3.1 PREPARATION A. PROTECT STRUCTURES, UTILITIES, SIDEWALKS, PAVEMENTS, AND OTHER FACILITIES FROM DAMAGE CAUSED BY SETTLEMENT, LATERAL MOVEMENT, UNDERMINING, WASHOUT AND OTHER HAZARDS CREATED BY DEWATERING OPERATIONS. 1. PREVENT SURFACE WATER AND SUBSURFACE OR GROUND WATER FROM ENTERING EXCAVATIONS, FROM PONDING ON PREPARED SUBGRADES, AND FROM FLOODING SITE OR SURROUNDING AREA. 2. PROTECT SUBGRADES AND FOUNDATION SOILS FROM SOFTENING AND DAMAGE BY RAIN OR WATER ACCUMULATION. B. INSTALL DEWATERING SYSTEM TO ENSURE MINIMUM INTERFERENCE WITH ROADS, STREETS, WALKS, AND OTHER ADJACENT OCCUPIED AND USED FACILITIES. 1. DO NOT CLOSE OR OBSTRUCT STREETS, WALKS, OR OTHER ADJACENT OCCUPIED OR USED FACILITIES WITHOUT PERMISSION FROM OWNER AND AUTHORITIES HAVING JURISDICTION. PROVIDE ALTERNATE ROUTES AROUND CLOSED OR OBSTRUCTED TRAFFIC WAYS IF REQUIRED BY AUTHORITIES HAVING JURISDICTION. C. PROVIDE TEMPORARY GRADING TO FACILITIES DEWATERING AND CONTROL OF SURFACE WATER. D. PROTECT AND MAINTAIN TEMPORARY EROSION AND SEDIMENTATION CONTROLS, WHICH ARE SPECIFIED IN SECTION 311000 “SITE CLEARING”, AND REFLECTED IN THE CIVIL DOCUMENTS DURING DEWATERING OPERATIONS. 3.2 INSTALLATION A. INSTALL DEWATERING SYSTEM UTILIZING WELLS, WELL POINTS, OR SIMILAR METHODS COMPLETE WITH PUMP EQUIPMENT, STANDBY POWER AND PUMPS, FILTER MATERIAL GRADATION, VALVES, APPURTENANCES, WATER DISPOSAL AND SURFACE-WATER CONTROLS. 1. SPACE WELL POINTS OR WELLS AT INTERVALS REQUIRED TO PROVIDE 2. USE FILTERS OR OTHER MEANS TO PREVENT PUMPING OF LINE SANDS OR SUFFICIENT DEWATERING. SILTS FROM THE SUBSURFACE. B. PLACE DEWATERING SYSTEM INTO OPERATION TO LOWER WATER TO SPECIFIED LEVELS TO SPECIFIED LEVELS BEFORE EXCAVATING BELOW GROUND-WATER LEVEL. C. PROVIDE SUMPS, SEDIMENTATION TANKS, AND OTHER FLOW-CONTROL DEVISES AS REQUIRED BY AUTHORITIES HAVING JURISDICTION. D. PROVIDE STANDBY EQUIPMENT ON-SITE, INSTALLED AND AVAILABLE FOR IMMEDIATE OPERATION, TO MAINTAIN DEWATERING ON CONTINUOUS BASIS IF ANY PART OF SYSTEM BECOMES INADEQUATE OR FAILS. 3.3 OPERATION A. OPERATE SYSTEM CONTINUOUSLY UNTIL DRAINS, SEWERS, AND STRUCTURES HAVE BEEN CONSTRUCTED AND FILL MATERIALS HAVE BEEN PLACED OR UNTIL DEWATERING IS NO LONGER REQUIRED. B. OPERATE SYSTEM TO LOWER AND CONTROL GROUND WATER TO PERMIT EXCAVATION, CONSTRUCTION OF STRUCTURES, AND PLACEMENT OF FILL MATERIALS ON DRY SUBGRADES. DRAIN WATER-BEARING STRATA ABOVE AND BELOW BOTTOM OF FOUNDATIONS, DRAINS, SEWERS, AND OTHER EXCAVATIONS. 1. DO NOT PERMIT OPEN-SUMP PUMPING THAT LEADS TO LOSS OF FINES, SOIL POPPING, SUBGRADE SOFTENING, AND SLOPE INSTABILITY. 2. REDUCE HYDROSTATIC HEAD IN WATER-BEARING STRATA BELOW SUBGRADE ELEVATIONS OF FOUNDATIONS, DRAINS, SEWERS, AND OTHER EXCAVATIONS. C. DISPOSE OF WATER REMOVED BY DEWATERING IN A MANNER THAT AVOIDS ENDANGERING PUBLIC HEALTH, PROPERTY, AND PORTIONS OF WORK UNDER CONSTRUCTION OR COMPLETED. DISPOSE OF WATER AND SEDIMENT IN A MANNER THAT AVOIDS INCONVENIENCE TO OTHERS. D. REMOVE DEWATERING SYSTEM FROM PROJECT SITE ON COMPLETION OF DEWATERING. PLUG OR FILL WELL HOLES WITH SAND OR CUT OFF AND CAP WELLS A MINIMUM OF 36 INCHES BELOW OVERLYING CONSTRUCTION. 3.4 FIELD QUALITY CONTROL A. OBSERVATION WELLS: PROVIDE OBSERVATION WELLS OR PIEZOMETERS, TAKE MEASUREMENTS, AND MAINTAIN AT LEAST THE MINIMUM NUMBER INDICATED; ADDITIONAL OBSERVATION WELLS MAY BE REQUIRED TO AUTHORITIES 3.6.2 STANDARD PLAN NOTE THE FOLLOWING PLAN NOTE SUMMARIZES THE CONTENTS OF THE ENVIRONMENTAL CRITERIA MANUAL AS IT RELATES TO TREE PROTECTION ON SITES WITH ACTIVE PERMITS: BEFORE CONSTRUCTION ALL TREES AND NATURAL AREAS SHOWN ON PLAN TO BE PRESERVED SHALL BE PROTECTED PER ECM 3.6.1. TREE PROTECTION SHALL BE INSTALLED PRIOR TO THE START OF ANY SITE WORK, INCLUDING DEMOLITION OR SITE PREPARATION. REFER TO ECM 3.6.1.A. FENCING FOR TREE PROTECTION SHALL BE CHAIN-LINK MESH WITH A MINIMUM HEIGHT OF 5 FEET AND SHALL BE INSTALLED AROUND OR BEYOND THE CRITICAL ROOT ZONE EXCEPT AS ALLOWED IN ECM 3.6.1.B.4. UNFENCED SECTIONS OF THE CRITICAL ROOT ZONE SHALL BE COVERED WITH MULCH AT A MINIMUM DEPTH OF 8 INCHES AND A MAXIMUM DEPTH OF 12 INCHES PER ECM 3.6.1.C. WHERE FENCING IS LOCATED 5 FEET OR LESS FROM THE TRUNK OF A PRESERVED TREE, TRUNK WRAPPING SHALL BE INSTALLED PER ECM 3.6.1.D. EROSION AND SEDIMENTATION CONTROLS SHALL BE INSTALLED AND MAINTAINED SO AS NOT TO CAUSE IMPACTS THAT EXCEED PRESERVATION CRITERIA LISTED IN ECM 3.5.3.D. TREES APPROVED FOR REMOVAL SHALL BE REMOVED IN A MANNER THAT DOES NOT EXCEED PRESERVATION CRITERIA FOR THE TREES TO REMAIN. REFER TO ECM 3.5.2 A. FENCING MAY NOT BE TEMPORARILY MOVED OR REMOVED DURING DEVELOPMENT WITHOUT PRIOR AUTHORIZATION. THE FENCED CRITICAL ROOT ZONE SHALL NOT BE USED FOR TOOL OR MATERIAL STORAGE OF ANY KIND AND SHALL BE KEPT FREE OF LITTER. REFER TO ECM 3.6.1.B.3. PRUNING SHALL BE IN COMPLIANCE WITH THE CURRENT ANSI A300 STANDARD FOR TREE CARE. AFTER CONSTRUCTION TREE PROTECTION SHALL BE REMOVED AT THE END OF THE PROJECT AFTER ALL CONSTRUCTION AND FINAL GRADING IS COMPLETE, BUT BEFORE FINAL INSPECTION. REFER TO ECM 3.6.1.A. LANDSCAPE INSTALLATION WITHIN THE CRZ OF PRESERVED TREES, INCLUDING IRRIGATION, SOIL AND PLANTINGS, SHALL NOT EXCEED PRESERVATION CRITERIA LISTED IN ECM 3.5.2. DOCUMENTATION OF TREE WORK PERFORMED MUST BE PROVIDED TO INSPECTOR PER ECM APPENDIX P-6. THIS LIST IS NOT EXHAUSTIVE. REFER TO APPROPRIATE ECM SECTIONS FOR FULL REQUIREMENTS. APPENDIX P-4: STANDARD SEQUENCE OF CONSTRUCTION 1. 2. 3. TEMPORARY EROSION AND SEDIMENTATION CONTROLS ARE TO BE INSTALLED AS INDICATED ON THE APPROVED SITE PLAN OR SUBDIVISION CONSTRUCTION PLAN AND IN ACCORDANCE WITH THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) THAT IS REQUIRED TO BE POSTED ON THE SITE. INSTALL TREE PROTECTION AND INITIATE TREE MITIGATION MEASURES. THE ENVIRONMENTAL PROJECT MANAGER OR SITE SUPERVISOR MUST CONTACT THE WATERSHED PROTECTION DEPARTMENT, ENVIRONMENTAL INSPECTION, AT 512-974-2278, 72 HOURS PRIOR TO THE SCHEDULED DATE OF THE REQUIRED ON-SITE PRECONSTRUCTION MEETING. THE ENVIRONMENTAL PROJECT MANAGER, AND/OR SITE SUPERVISOR, AND/OR DESIGNATED RESPONSIBLE PARTY, AND THE GENERAL CONTRACTOR WILL FOLLOW THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) POSTED ON THE SITE. TEMPORARY EROSION AND SEDIMENTATION CONTROLS WILL BE REVISED, IF NEEDED, TO COMPLY WITH CITY INSPECTORS' DIRECTIVES, AND REVISED CONSTRUCTION SCHEDULE RELATIVE TO THE WATER QUALITY PLAN REQUIREMENTS AND THE EROSION PLAN. 4. ROUGH GRADE THE POND(S) AT 100% PROPOSED CAPACITY. EITHER THE PERMANENT OUTLET STRUCTURE OR A TEMPORARY OUTLET MUST BE CONSTRUCTED PRIOR TO DEVELOPMENT OF EMBANKMENT OR EXCAVATION THAT LEADS TO PONDING CONDITIONS. THE OUTLET SYSTEM MUST CONSIST OF A SUMP PIT OUTLET AND AN EMERGENCY SPILLWAY MEETING THE REQUIREMENTS OF THE DRAINAGE CRITERIA MANUAL AND/OR THE ENVIRONMENTAL CRITERIA MANUAL, AS REQUIRED. THE OUTLET SYSTEM SHALL BE PROTECTED FROM EROSION AND SHALL BE MAINTAINED THROUGHOUT THE COURSE OF CONSTRUCTION UNTIL INSTALLATION OF THE PERMANENT WATER QUALITY POND(S). TEMPORARY EROSION AND SEDIMENTATION CONTROLS WILL BE INSPECTED AND MAINTAINED IN ACCORDANCE WITH THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) POSTED ON THE SITE. 5. 6. BEGIN SITE CLEARING/CONSTRUCTION (OR DEMOLITION) ACTIVITIES. 7. IN THE BARTON SPRINGS ZONE, THE ENVIRONMENTAL PROJECT MANAGER OR SITE SUPERVISOR WILL SCHEDULE A MID-CONSTRUCTION CONFERENCE TO COORDINATE CHANGES IN THE CONSTRUCTION SCHEDULE AND EVALUATE EFFECTIVENESS OF THE EROSION CONTROL PLAN AFTER POSSIBLE CONSTRUCTION ALTERATIONS TO THE SITE. PARTICIPANTS SHALL INCLUDE THE CITY INSPECTOR, PROJECT ENGINEER, GENERAL CONTRACTOR AND ENVIRONMENTAL PROJECT MANAGER OR SITE SUPERVISOR. THE ANTICIPATED COMPLETION DATE AND FINAL CONSTRUCTION SEQUENCE AND INSPECTION SCHEDULE WILL BE COORDINATED WITH THE APPROPRIATE CITY INSPECTOR. 8. PERMANENT WATER QUALITY PONDS OR CONTROLS WILL BE CLEANED OUT AND FILTER MEDIA WILL BE INSTALLED PRIOR TO/CONCURRENTLY WITH REVEGETATION OF SITE. 9. COMPLETE CONSTRUCTION AND START REVEGETATION OF THE SITE AND INSTALLATION OF LANDSCAPING. 10. UPON COMPLETION OF THE SITE CONSTRUCTION AND REVEGETATION OF A PROJECT SITE, THE DESIGN ENGINEER SHALL SUBMIT AN ENGINEER'S LETTER OF CONCURRENCE TO THE WATERSHED PROTECTION AND DEVELOPMENT REVIEW DEPARTMENT INDICATING THAT CONSTRUCTION, INCLUDING REVEGETATION, IS COMPLETE AND IN SUBSTANTIAL CONFORMITY WITH THE APPROVED PLANS. AFTER RECEIVING THIS LETTER, A FINAL INSPECTION WILL BE SCHEDULED BY THE APPROPRIATE CITY INSPECTOR. 11. UPON COMPLETION OF LANDSCAPE INSTALLATION OF A PROJECT SITE, THE LANDSCAPE ARCHITECT SHALL SUBMIT A LETTER OF CONCURRENCE TO THE WATERSHED PROTECTION AND DEVELOPMENT REVIEW DEPARTMENT INDICATING THAT THE REQUIRED LANDSCAPING IS COMPLETE AND IN SUBSTANTIAL CONFORMITY WITH THE APPROVED PLANS. AFTER RECEIVING THIS LETTER, A FINAL INSPECTION WILL BE SCHEDULED BY THE APPROPRIATE CITY INSPECTOR. 12. AFTER A FINAL INSPECTION HAS BEEN CONDUCTED BY THE CITY INSPECTOR AND WITH APPROVAL FROM THE CITY INSPECTOR, REMOVE THE TEMPORARY EROSION AND SEDIMENTATION CONTROLS AND COMPLETE ANY NECESSARY FINAL REVEGETATION RESULTING FROM REMOVAL OF THE CONTROLS. CONDUCT ANY MAINTENANCE AND REHABILITATION OF THE WATER QUALITY PONDS OR CONTROLS. 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D I I N O T A T N E M D E S & N O S O R E I S E T O N L O R T N O C I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 18 OF 41 M A 4 5 : 8 5 2 , 5 r a M l l n o y e g n a m y b d e i f i d o m g w d . L T D S E - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V CONFIDENTIAL SP-2024-0356C 28 SP-2024-0356C - ACCX - Convention Center C133 of 56EAST 4TH STREET (80' R.O.W.) T E E R T Y S RINIT T 0' R.O.W.) (8 T E E R T S Y T N R T I I ) . . W O R . ' 0 8 ( T E E R T S S E H C E N 0' R.O.W.) (8 A N A L P E E S E N I L H C T A M F N A L P E E S E N I L H C T A M EXISTING DEMO DESCRIPTION LEGEND A B C F E D KEY MAP N.T.S. DEMOLITION NOTES: 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D I A N A L P N O T L O M E D E T S I I I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 19 OF 41 M A 3 1 : 9 5 2 , 5 r a M n o a z u o b p y b d e i f i d o m g w d . A E T S - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - I i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V “ ” ’ ” THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. CONFIDENTIAL SP-2024-0356C NOTE: MATCHLINE SEE PLAN A MATCHLINE SEE PLAN B DEMOLITION KEYNOTES 28 SP-2024-0356C - ACCX - Convention Center C134 of 56MATCHLINE SEE PLAN A MATCHLINE SEE PLAN B EXISTING DEMO DESCRIPTION LEGEND EAST 3RD STREET (80' R.O.W.) T E E R T Y S RINIT T 0' R.O.W.) (8 NOTE: A B C F E D KEY MAP N.T.S. DEMOLITION NOTES: B N A L P E E S E N I L H C T A M E N A L P E E S E N I L H C T A M “ ” ’ ” 2 9 5 2 - 8 9 2 ) 2 1 5 ( x a F 4 8 2 3 - 8 9 2 ) 2 1 5 ( . l e T 5 2 0 2 t h g i r y p o C © C L L , C M E a z r a G 9 2 6 4 1 - F # E P B T 5 2 1 e t i u S , . l d v B o t l i a R 8 0 7 7 5 3 7 8 7 s a x e T , n i t s u A I N O S V E R I . O N E T A D I B N A L P N O T L O M E D E T S I I I N O T A V A C X E D N A O M E D - X C C A T E E R T S D R 3 E 0 0 5 I N T S U A F O Y T C I 1 8 0 0 0 - 6 4 7 2 0 1 : . O N T C E J O R P : Y B D E N G S E D I : Y B N W A R D : C Q / A Q SHEET 20 OF 41 M A 9 5 : 8 5 2 , 5 r a M n o a z u o b p y b d e i f i d o m g w d . B E T S - 1 8 0 0 0 - 6 4 7 2 0 1 \ D A C - 0 0 \ l i - I i v C \ 1 8 0 0 0 - 6 4 7 2 0 1 \ : V EAST 2ND STREET (80' R.O.W.) MATCHLINE SEE PLAN B MATCHLINE SEE PLAN C DEMOLITION KEYNOTES THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. CONFIDENTIAL SP-2024-0356C 28 SP-2024-0356C - ACCX - Convention Center C135 of 56