06 SP-2024-0147C.SH - Loyola Flats; District 1 Staff Report Part 2

Zoning and Platting Commission – Dec. 17, 2024

06 SP-2024-0147C.SH - Loyola Flats; District 1 Staff Report Part 2 — original pdf

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PROPERTY LINE CRITICAL ENVIRONMENTAL FEATURE CREEK CENTERLINE EXISTING 150' CEF SETBACK BOUNDARY MODIFIED CEF SETBACK BOUNDARY PROPOSED 100 YR COA FULLY DEVELOPED FLOODPLAIN PROPOSED 25 YR COA FULLY DEVELOPED FLOODPLAIN EXISTING CEF BUFFER AREA PROPOSED CEF BUFFER REDUCTION AREA PROPOSED MITIGATION AREA REFERENCE LANDSCAPE SHEET NUMBER 73 (LP 1.01) FOR WETLAND MITIGATION TABLE NOTES: 1. 2. 3. 4. TREES AND TOPOGRAPHY BASED UPON SURVEY BY KIMLEY-HORN & ASSOCIATES. ON OCTOBER 10, 2022. ALL ACTIVITIES WITHIN THE CRITICAL ENVIRONMENTAL FEATURES (CEFS) AND ASSOCIATED SETBACKS MUST COMPLY WITH THE CITY OF AUSTIN LAND DEVELOPMENT CODE. THE NATURAL VEGETATIVE COVER MUST BE RETAINED TO THE MAXIMUM EXTENT PRACTICABLE; CONSTRUCTION IS PROHIBITED EXCEPT AS IDENTIFIED IN THIS SITE PLAN; AND WASTEWATER DISPOSAL OR IRRIGATION IS PROHIBITED. CRITICAL ENVIRONMENTAL FEATURES BASED ON ENVIRONMENTAL RESOURCE INVENTORY PREPARED BY TERRACON CONSULTANTS, INC ON OCTOBER 12, 2023, LAST REVISED JANUARY 5, 2024. PLANTING DETAILS FOR PROPOSED WETLAND MITIGATION AREAS AND WATER QUALITY AND DETENTION PONDS ARE INCLUDED ON LANDSCAPE PLANS: WETLAND MITIGATION PLAN SHEET 73 25' DRAINAGE EASEMENT AND P.U.E DOC# 200300077 OPRTC COLONY LOOP DRIVE (70' PUBLIC R.O.W.) 8" PVC 78-0067 10' P.U.E DOC# 200300077 OPRTC VALVE #135081 12" CI 328997 V T T F FIB FIB CBL CBL FIB FIB T F V T SOUTHWESTERN BELL EASEMENT DOC# 2000156922 OPRTC 20 21 C O L O N Y M L E O P D A T 2 H O 2 A D W D O C # 2 O S 0 E P 0 R 3 II S S T 0 C 0 E C 0 7 7 T I O N III AW MH# 97495 VALVE #134994 VALVE #135016 FH AW# 135115 12" PVC 74-0007 6" CI 304031 40' DRAINAGE EASEMENT DOC #200300077 OPRTC CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION C E F B M M B F E C 150' WETLAND CEF SETBACK 6' S/W EASEMENT DOC #200300077 OPRTC 12' P.U.E DOC# 200300077 OPRTC AW MH# 79550 CEFBM L F F L C E F B M L F FL M B F E C F L FL C C C C C 19 18 17 16 15 L F F L L F L F F L F L M B F E D C D M B F E C T CEFBM L F L F L F L F F L F L F L F L F L 14 T D L F FL E FL FL FL FL FL FL FL L F D E L F F L 3 TYPE A FF: 557.00 1 TYPE C FF: 553.50 E RIV E D BLE WIDTH BLIC R.O.W.) N STO RIA R E A U RIV (V P 13 12 D L F F L FL FL E 11 FL FL FL FL 10 FL FL FL FL FL FL T FL E FL E LOT 22 C COLONY MEADOWS SECTION III PHASE II DOC# 200300077 OPRTC FF: 552.50 2 TYPE C CEFBM FL E F L FL F L L F F L WATER QUALITY/ DETENTION POND CEFBM F L L F E F L L F L F Z H E ELM CREEK ℄ Z Q W C EHZ CEFBM Z C W Q Z H E Z C W Q 9 L F F L T L F F L 4 TYPE B FF: 551.50 L F CEFBM M B F E C Z Q W C Z H E CBL M B F E C EHZ Z C W Q CEFBM E H Z T E N A L R E K C E D ) . . . W O R C L B U P I ' 0 2 1 ( VALVE #531835 FH AW #531837 16" AC 74-0007 150' WETLAND CEF SETBACK AW MH# 97813 AW MH# 295275 2 - 4' X 5' CONC. BOX CULVERTS BM #2 ELEV.=546.22' 15" PVC 2020-0571 E E EHZ Z Q W C Z H E 16" AC 74-0007 E H Z CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION 15" PVC 2020-0571 AW MH# 295491 AW MH# 295489 Y B E T A D I S N O S V E R I . o N 0 0 1 E T U S I I , 2 G N D L I U B , Y A W K R A P T S E W H T U O S 1 0 3 5 6 4 7 8 7 s a x e T , n i t s u A 7 3 2 2 - 6 4 6 - 2 1 5 : E N O H P . - M O C N R O H Y E L M K W W W I . . C N I , I S E T A C O S S A D N A N R O H Y E L M K 4 2 0 2 - I C 8 2 9 . o N m r i F E P B T 11/25/2024 T C E J O R P A H K 3 2 3 5 7 2 9 6 0 E T A D 4 2 0 2 T S U G U A N W O H S S A : E L A C S L R A C J D L R A : Y B D E N G S E D I : Y B D E K C E H C : Y B N W A R D I I N O T A G T M F E C I N A L P S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I C9-10 10 SP-2024-0147C.SH OF 94 COLONY MEADOWS SECTION ONE VOL.84, PG.47B & 47C PRTC 60' PIPELINE EASEMENT VOL. 647 PG. 135 VOL. 994 PG. 587 VOL. 4759 PG. 440 VOL. 3820 PG. 1 VOL. 4756 PG. 876 15' P.U.E AND DRAINAGE EASEMENT VOL. 85 PG. 151C PRTC (APPROXIMATE LOCATION) 8 FL F L BLOCK C COLONY MEADOWS SECTION TWO VOL.84, PG.57A - 57B PRTC 1 2 3 4 5 6 I E V R D H T R O W T N E W ) . . . W O R C L B U P I ' 4 6 ( T E D LOT 22 A COLONY MEADOWS SECTION III PHASE I VOL.85 PG. 151C PRTC RAIN GARDEN LOT 22 B COLONY MEADOWS SECTION III PHASE I VOL.85 PG. 151C PRTC G E G GAS GAS CBL G 7 T D L F F L E E L F F L L F F L L F F L 7.5' P.U.E VOL. 85 PG. 151C PRTC T L F FL FL FL FL FL FL E FL F L L F CBL E G CBL G T GAS G CBL CBL CBL CBL CBL CBL CBL CBL CEFBM CBL CBL GAS D GAS G GAS GAS D GAS GAS GAS GAS GAS GAS G E GAS D CBL Z H E CBL CWQZ T E V T CBL E 50' DRAINAGE EASEMENT VOL. 67 Page 10 RTC Know what'sbelow. Call before you dig. 6" DI VALVE #691840 48" DI 2014-0591 8" DI 29434 RESUBDIVISION OF LOT 1, 12" DI 2003-004 VALVE #247577 VALVE #247579 BM #1 ELEV.=533.25' AW MH# 79548 LOYOLA LANE (120' PUBLIC R.O.W.) 16" AC 74-0007 OPEN DRAINAGE DITCH OR ENCLOSED STORM SEWER EASEMENT VOL. 12653 PG. 284 OPRTC PROPOSED 20' WASTEWATER EASEMENT DOC NO _____________ 6' SIDEWALK EASEMENT DOC. NO. 200300077 3 - 6' X 8' CONC. BOX CULVERTS 10' PUE DOC. NO. 200300077 15' P.U.E CITY OF AUSTIN VOL. 4729 PAGE 1637 PRTC 20' SOUTHWESTERN BELL EASEMENT VOL. 687 PAGE 103 OPRTC WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. LOT 2, BLOCK A, JD'S CORNER C-ANNO 06 SP-2024-0147C.SH - Loyola Flats; District 11 of 10 COLONY LOOP DRIVE (70' PUBLIC R.O.W.) VALVE #135081 12" CI 328997 V T T F FIB FIB CBL CBL FIB FIB T F V T 20 21 VALVE #134994 VALVE #135016 FH AW# 135115 6" CI 304031 C O L O N Y M L E O P D A T 2 H O 2 A D W D O C # 2 O S 0 E P 0 R 3 II S S T 0 C 0 E C 0 7 7 T I O N III C E F B M M B F E C 150' WETLAND CEF SETBACK CEFBM L F F L C E F B M M B F E C L F L F FL FL F L 19 18 17 16 15 14 T F L F L F L M B F E C M B F E C L F L F T CEFBM L F L F L F L F F L F L F L F L L F F L 3 TYPE A FF: 557.00 1 TYPE C FF: 553.50 L F F L FL FL FL FL FF: 552.50 2 TYPE C CEFBM Z H E Z Q W C EHZ CREEK CENTERLINE M B F E C EHZ Z C W Q CEFBM CEFBM WATER QUALITY/ DETENTION POND CEFBM E H Z Z C W Q Z H E Z C W Q HALF CWQZ Z H E CWQZ E H Z E E EHZ Z Q W C FL FL FL FL FL FL FL FL L F L F F L T E RIV E D BLE WIDTH BLIC R.O.W.) N STO RIA R E A U RIV (V P 13 12 E N A L R E K C E D ) . . . W O R C L B U P I ' 0 2 1 ( VALVE #531835 FH AW #531837 11 10 T FL FL FL FL FL FL FL FL LOT 22 C COLONY MEADOWS SECTION III PHASE II DOC# 200300077 OPRTC PROPERTY LINE CREEK CENTERLINE MODIFIED CEF SETBACK BOUNDARY EXISTING CRITICAL WATER QUALITY ZONE PROPOSED CRITICAL WATER QUALITY ZONE PROPOSED 100 YR FULLY DEVELOPED FLOODPLAIN PROPOSED 25 YR FULLY DEVELOPED FLOODPLAIN EXISTING 100 YR FULLY DEVELOPED FLOODPLAIN EXISTING 25 YR FULLY DEVELOPED FLOODPLAIN ZONE 1 (OUTSIDE CWQZ) FLOODPLAIN MODIFICATION AREA ZONE 2 (INSIDE CWQZ) FLOODPLAIN MODIFICATION AREA CRITICAL ENVIRONMENTAL FEATURE REFERENCE LANDSCAPE SHEET NUMBER 74 (LP 1.02) FOR FLOODPLAIN RESTORATION TABLE Y B E T A D I S N O S V E R I . o N 0 0 1 E T U S I I , 2 G N D L I U B , Y A W K R A P T S E W H T U O S 1 0 3 5 6 4 7 8 7 s a x e T , n i t s u A 7 3 2 2 - 6 4 6 - 2 1 5 : E N O H P . - M O C N R O H Y E L M K W W W I . . C N I , I S E T A C O S S A D N A N R O H Y E L M K 4 2 0 2 - I C 8 2 9 . o N m r i F E P B T 11/25/2024 T C E J O R P A H K 3 2 3 5 7 2 9 6 0 E T A D 4 2 0 2 T S U G U A N W O H S S A : E L A C S L R A C J D L R A : Y B D E N G S E D I : Y B D E K C E H C : Y B N W A R D I N A L P D O O L F I N A L P N O T A C F D O M I I S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I C9-11 OF 94 11 SP-2024-0147C.SH COLONY MEADOWS SECTION ONE VOL.84, PG.47B & 47C PRTC 1 2 3 4 5 6 I E V R D H T R O W T N E W ) . . . W O R C L B U P I ' 4 6 ( T E D G GAS LOT 22 A COLONY MEADOWS SECTION III PHASE I VOL.85 PG. 151C PRTC LOT 22 B COLONY MEADOWS SECTION III PHASE I VOL.85 PG. 151C PRTC G E GAS E G G G T GAS G T L F FL FL FL FL FL FL FL F L L F BLOCK C COLONY MEADOWS SECTION TWO VOL.84, PG.57A - 57B PRTC 8 7 T L F F L L F F L L F F L L F F L 9 L F F L T L F F L 4 TYPE B FF: 551.50 FL FL FL F L FL F L FL F L L F F L F L L F F L L F L F L F CEFBM M B F E C Z Q W C Z H E CEFBM GAS D GAS G GAS D GAS GAS D GAS GAS GAS GAS GAS GAS G ZONE 1 MODIFICATION Z H E ZONE 2 MODIFICATION E CWQZ T E V T 48" DI 2014-0591 8" DI 29434 LOYOLA LANE (120' PUBLIC R.O.W.) 6" DI VALVE #691840 RESUBDIVISION OF LOT 1, 12" DI 2003-004 VALVE #247577 VALVE #247579 LOT 2, BLOCK A, JD'S CORNER Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. C-ANNO 06 SP-2024-0147C.SH - Loyola Flats; District 12 of 10H T R O N MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 3,109 SF MITIGATION AREA - NATIVE PLANTINGS 9,206 SF 40' DRAINAGE EASEMENT DOC #200300077 OPRTC CEF SETBACK PLANTING 1,688 SF CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION C E F B M CEF SETBACK PLANTING (WASTEWATER EASEMENT) 267 SF LIMESTONE BLOCKS (TYP.) SEE DETAIL C, SHEET 84 M B F E C MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 1,744 SF 150' WETLAND CEF SETBACK 12' P.U.E. DOC# 200300077 OPRTC MITIGATION AREA - NATIVE PLANTINGS 9,422 SF LEGEND: WETLAND MITIGATION NOTES: 1. ALL ACTIVITIES WITHIN THE CEF AND CEF BUFFER MUST COMPLY WITH THE CITY OF AUSTIN CODE AND CRITERIA. THE NATURAL VEGETATIVE COVER MUST BE RETAINED TO THE MAXIMUM EXTENT PRACTICABLE; CONSTRUCTION IS PROHIBITED; AND WASTEWATER DISPOSAL OR IRRIGATION IS PROHIBITED. 2. CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION. PROPOSED CEF BUFFER REDUCTION AREA BIOFILTRATION BASIN SEDIMENTATION BASIN DETENTION POND NATIVE SEEDING NONEROSIVE CONVEYANCE OUTFALL CEF SETBACK PLANTING CEF SETBACK PLANTING (WASTEWATER EASEMENT) MITIGATION AREA - NATIVE PLANTINGS MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) COLONY LOOP DRIVE (70' PUBLIC R.O.W.) COLONY LOOP DRIVE V T T F FIB FIB CBL CBL FIB FIB T F V T CEFBM L F F L C E F B M L F FL M B F E C F L FL C C C C C M B F E D C D M B F E C T CEFBM L F L F F L F L L F L F F L F L F L L F L F L F F L F L F L T D L F L F D E L F F L D L F F L FL FL E FL FL FL FL FL E FL FL FL FL FL FL FL T . ) . E N A L E W R N O A E R L C R K L E B K U C P C E E D D 0 2 1 ( ' . I CEFBM Z C W Q Z H E Z C W Q CEFBM Z H E ELM CREEK ℄ CEFBM Z Q W C EHZ Z H E E H Z M B F E C EHZ Z 150' WETLAND CEF SETBACK C W Q CEFBM E H Z MITIGATION AREA - NATIVE PLANTINGS 24,607 SF CEF SETBACK PLANTING (WASTEWATER EASEMENT) 1,495 SF CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION 50' DRAINAGE EASEMENT VOL. 67 PAGE 10 RTC EHZ CEF SETBACK PLANTING 1,497 SF LIMESTONE BLOCKS (TYP.) SEE DETAIL C, SHEET 84 MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 10,940 SF MITIGATION AREA - NATIVE PLANTINGS 13,992 SF Z Q W C E E LEGEND C = CEF SETBACK TREE F = FLOODPLAIN TREE M = MITIGATION TREE N = NATIVE MITIGATION TREE P = PARKING TREE S = STREET YARD TREE CEF MITIGATION LANDSCAPE PLAN - LOCATED ON SHEETS 71 AND 72. FLOODPLAIN RESTORATION PLAN - LOCATED ON SHEETS 73 AND 74. BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E FOR PERMIT ONLY 11/14/2024 I I N O T A G T M F E C I N A L P S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.01 71 SP-2024-0147C.SH OF 94 WETLAND MITIGATION NOTES: 1. ALL ACTIVITIES WITHIN THE CEF AND CEF BUFFER MUST COMPLY WITH THE CITY OF AUSTIN CODE AND CRITERIA. THE NATURAL VEGETATIVE COVER MUST BE RETAINED TO THE MAXIMUM EXTENT PRACTICABLE; CONSTRUCTION IS PROHIBITED; AND WASTEWATER DISPOSAL OR IRRIGATION IS PROHIBITED. 2. CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION. IF A SPECIES IS NOT COMMERCIALLY AVAILABLE AT CONSTRUCTION, SPECIES SUBSTITUTION MAY BE ALLOWED PENDING APPROVAL BY 3. THE WETLAND BIOLOGIST REVIEWER THROUGH A SITE PLAN CORRECTION. FOR DETENTION POND PLANTING INFORMATION REF. TABLE 6 THIS SHEET. FOR MITIGATION AREA AND MITIGATION AREA (EASEMENT) PLANTING INFORMATION REF. TABLE 4 THIS SHEET. 4. 5. . . I I ) . I E V R E D V R W D H O H R T T C R L R O B U W P O T N E W W T N E W 4 6 ( ' E D T G GAS BIOFILTRATION BASIN 2,256 SF E G GAS CBL G 150' WETLAND CEF SETBACK T L F L F F L L F F L T D L F F L E FL FL FL FL FL FL E FL F L L F RIVE E RIV E D BLE WIDTH BLIC R.O.W.) N NE D STO RIA R E A U RIV (V P RIVERSTO FL FL T FL FL FL FL FL E FL T L F F L L F DETENTION POND NATIVE OVER-SEEDING 10,152 SF E FL SEDIMENTATION BASIN 1,361 SF L F E BIOFILTRATION BASIN 3,103 SF L L F F NONEROSIVE CONVEYANCE OUTFALL 643 SF L F F L FL FL F L L F E F L L F L F L F F L E L F F L CEFBM Z H E CBL M B F E C Z Q W C CBL E G CBL G T GAS G CBL CBL CBL CBL CBL CBL CBL CBL CEFBM CBL CBL GAS D GAS G GAS GAS D GAS GAS GAS GAS GAS GAS G E GAS D CBL Z H E CBL CWQZ T E V T CBL E LOYOLA LANE LOYOLA LANE (120' PUBLIC R.O.W.) DRAINAGE EASEMENT WITH REQUIRED MAINTENANCE AND PERMITTED OBSTRUCTIONS DOC NO. ___________ PROPOSED 20' WASTEWATER EASEMENT DOC NO _____________ Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. C-ANNO 06 SP-2024-0147C.SH - Loyola Flats; District 13 of 10PLANT SCHEDULE PLANT SCHEDULE SYMBOL CODE QTY BOTANICAL / COMMON NAME CONT SYMBOL CODE QTY COMMON NAME TURK'S CAP CEF SETBACK (3,185 SF) MITIGATION AREA (EASEMENT) (15,793 SF) CE 12 ULMUS CRASSIFOLIA CEDAR ELM NONEROSIVE CONVEYANCE OUTFALL (643 SF) BO CO BW 6 7 7 QUERCUS MACROCARPA BUR OAK QUERCUS MUEHLENBERGII CHINQUAPIN OAK SALIX NIGRA BLACK WILLOW MITIGATION AREA (57,227 SF) BO2 143 QUERCUS MACROCARPA BUR OAK CO2 143 QUERCUS MUEHLENBERGII CHINQUAPIN OAK BW2 143 SALIX NIGRA BLACK WILLOW CE2 144 ULMUS CRASSIFOLIA CEDAR ELM SYMBOL CODE QTY BOTANICAL / COMMON NAME CONT CEF SETBACK (3,185 SF) CEF SETBACK (EASEMENT) (1,762 SF) BB LM BB2 LM2 AB PC TC 16 16 18 18 140 151 144 ANDROPOGON GLOMERATUS BUSHY BLUESTEM MUHLENBERGIA LINDHEIMERI LINDHEIMER MUHLY ANDROPOGON GLOMERATUS BUSHY BLUESTEM MUHLENBERGIA LINDHEIMERI LINDHEIMER MUHLY AGERATINA HAVANENSIS WHITE MISTFLOWER CALLICARPA AMERICANA AMERICAN BEAUTYBERRY ECHINACEA ANGUSTIFOLIA NARROW-LEAF PURPLE CONEFLOWER MALVAVISCUS ARBOREUS VAR. DRUMMONDII TURK'S CAP MITIGATION AREA (57,227 SF) WM 138 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL WM2 AB2 PC2 TC2 SG EG 74 87 77 78 70 80 BS 142 YU 197 HM 80 MW 270 MM 243 TF 179 AGERATINA HAVANENSIS WHITE MISTFLOWER CALLICARPA AMERICANA AMERICAN BEAUTYBERRY ECHINACEA ANGUSTIFOLIA NARROW-LEAF PURPLE CONEFLOWER MALVAVISCUS ARBOREUS VAR. DRUMMONDII TURK'S CAP PANICUM VIRGATUM SWITCH GRASS TRIPSACUM DACTYLOIDES EASTERN GAMAGRASS ANDROPOGON GERARDII BIG BLUESTEM CHASMANTHIUM LATIFOLIUM INLAND SEAOATS HELIANTHUS MAXIMILIANI MAXIMILIAN SUNFLOWER MUHLENBERGIA LINDHEIMERI LINDHEIMER’S MUHLY PANICUM VIRGATUM SWITCHGRASS TRIPSACUM DACTYLOIDES EASTERN GAMA GRASS BIOFILTRATION BASIN (3,103 SF) DETENTION POND (10,152 SF) REF. TABLE 6 SEED 10,152 SF FACULTATIVE SPECIES GRASS SEED MIX MITIGATION AREA (57,227 SF) REF. TABLE 4 SEED2 56,284 SF UPLAND SPECIES GRASS SEED MIX MITIGATION AREA (EASEMENT) (15,793 SF) REF. TABLE 4 SEED3 13,449 SF UPLAND SPECIES GRASS SEED MIX SEDIMENTATION BASIN (1,361 SF) HM2 52 MW2 141 TF2 82 HELIANTHUS MAXIMILIANI MAXIMILIAN SUNFLOWER MUHLENBERGIA LINDHEIMERI LINDHEIMER’S MUHLY TRIPSACUM DACTYLOIDES EASTERN GAMA GRASS 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL 1 GAL SEED SEED SEED 1 GAL 1 GAL NOTES: 1. IF A SPECIES IS NOT COMMERCIALLY AVAILABLE AT CONSTRUCTION, SPECIES SUBSTITUTIONS MAY BE ALLOWED PENDING APPROVAL BY THE WETLAND BIOLOGIST REVIEWER THROUGH A SITE PLAN CORRECTION. 2. REFERENCE TABLE 6 FOR DETENTION POND PLANTINGS. 3. REFERENCE TABLE 4 FOR THE MITIGATION AREA AND MITIGATION AREA (EASEMENTS) PLANTINGS. 4. ALL ACTIVITIES WITHIN THE CEF AND CEF BUFFER MUST COMPLY WITH THE CITY OF AUSTIN CODE AND CRITERIA. THE NATURAL VEGETATIVE COVER MUST BE RETAINED TO THE MAXIMUM EXTENT PRACTICABLE; CONSTRUCTION IS PROHIBITED; AND WASTEWATER DISPOSAL OR IRRIGATION IS PROHIBITED. 5. CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION. NOTE: 1. IF A SPECIES IS NOT COMMERCIALLY AVAILABLE AT CONSTRUCTION, SPECIES SUBSTITUTIONS MAY BE ALLOWED PENDING APPROVAL BY THE WETLAND BIOLOGIST REVIEWER THROUGH A SITE PLAN CORRECTION. COLONY LOOP DRIVE FIB FIB CBL CBL FIB FIB T F V T V T T F C C C C C C C C C C C E F B M C C CEFBM L F F L L F FL M B F E C F L FL C C C C C C C C C C C E F B M MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 3,109 SF MITIGATION AREA - NATIVE PLANTINGS 9,206 SF 40' DRAINAGE EASEMENT DOC #200300077 OPRTC CEF SETBACK PLANTINGS 1,688 SF CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION MITIGATION AREA - NATIVE PLANTINGS 9,422 SF CEF SETBACK PLANTINGS (WASTEWATER EASEMENT) 267 SF LIMESTONE BLOCKS (TYP.) EDUCATIONAL SIGNAGE TO BE SEE DETAIL C, SHEET 84 PROVIDED AT THE EDGE OF WETLAND CEF. MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 1,744 SF M B F E C 150' WETLAND CEF SETBACK H T R O N M B F E D C D M B F E C T CEFBM L F L F L F L F F L F L F L F L F L L F L F L F F L F L F L T D L F L F D E L F F L D L F F L FL FL E FL FL FL FL RIVE NE D 1 GAL RIVERSTO FL FL T FL FL FL FL FL E FL T L F F L L F DETENTION POND NATIVE OVER-SEEDING 10,152 SF E FL SEDIMENTATION BASIN 1,361 SF L F E BIOFILTRATION BASIN 3,103 SF L L F F NONEROSIVE CONVEYANCE OUTFALL 643 SF L F F L FL FL F L L F E F L L F L F L F F L E L F F L CEFBM Z Q W C EHZ CEFBM Z H E CBL M B F E C Z Q W C FL E FL FL FL FL FL FL FL T E N A L R E K C E D 150' WETLAND CEF SETBACK CEFBM Z C W Q Z H E CEFBM Z C W Q Z H E M B F E C EHZ Z C W Q CEFBM E H Z EDUCATIONAL SIGNAGE TO BE PROVIDED AT THE EDGE OF WETLAND CEF. MITIGATION AREA - NATIVE PLANTINGS 24,607 SF CEF SETBACK PLANTINGS (WASTEWATER EASEMENT) 1,495 SF CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION C Z C H E C C C C C E H Z C C C C 50' DRAINAGE EASEMENT VOL. 67 PAGE 10 RTC C C C C EHZ CEF SETBACK PLANTINGS 1,497 SF LIMESTONE BLOCKS (TYP.) SEE DETAIL C, SHEET 84 MITIGATION AREA - NATIVE PLANTINGS 13,992 SF MITIGATION AREA - NATIVE PLANTINGS (WASTEWATER EASEMENT) 10,940 SF Z Q W C E E I E V R D H T R O W T N E W E D T G GAS BIOFILTRATION BASIN 2,256 SF E G GAS CBL G 150' WETLAND CEF SETBACK T L F L F F L L F F L T D L F F L E FL FL FL FL FL FL E FL F L L F CBL E G CBL G T GAS G CBL CBL CBL CBL CBL CBL CBL CBL CEFBM CBL CBL GAS D GAS G GAS GAS D GAS GAS GAS GAS GAS GAS G E GAS D CBL Z H E CBL CWQZ T E V T CBL E LOYOLA LANE DRAINAGE EASEMENT WITH REQUIRED MAINTENANCE AND PERMITTED OBSTRUCTIONS DOC NO. ___________ PROPOSED 20' WASTEWATER EASEMENT DOC NO _____________ Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. LEGEND C = CEF SETBACK TREE F = FLOODPLAIN TREE M = MITIGATION TREE N = NATIVE MITIGATION TREE P = PARKING TREE S = STREET YARD TREE CEF MITIGATION LANDSCAPE PLAN - LOCATED ON SHEETS 71 AND 72. FLOODPLAIN RESTORATION PLAN - LOCATED ON SHEETS 73 AND 74. BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E FOR PERMIT ONLY 11/14/2024 I I N O T A G T M F E C I E P A C S D N A L N A L P S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.02 72 SP-2024-0147C.SH OF 94 06 SP-2024-0147C.SH - Loyola Flats; District 14 of 10 COLONY LOOP DRIVE COLONY LOOP DRIVE (70' PUBLIC R.O.W.) (70' PUBLIC R.O.W.) COLONY LOOP DRIVE V V T T T T F F FIB FIB FIB FIB CBL CBL CBL CBL FIB FIB FIB FIB T T F F V V T T H T R O N NOTES: 1. IF A SPECIES IS NOT COMMERCIALLY AVAILABLE AT CONSTRUCTION, SPECIES SUBSTITUTIONS MAY BE ALLOWED PENDING APPROVAL BY THE WETLAND BIOLOGIST REVIEWER THROUGH A SITE PLAN CORRECTION. FLOODPLAIN RESTORATION NOTES: 1. 2. 3. 4. 5. 6. TREE SEEDLINGS SHALL BE PLANTED BETWEEN NOVEMBER AND FERUARY. SEED MIX SHALL BE APPLIED AS A HYDROMULCH OR WITH A BIODEGRADABLE BLANKET. PROVIDE PRODUCT DATA TO LANDSCAPE ARCHITECT FOR REVIEW. TEMPORARY IRRIGATION SHALL BE REQUIRED FOR A ONE YEAR ESTABLISHMENT PERIOD. CONTRACTOR TO BE RESPONSIBLE FOR REMOVAL OF IRRIGATION PIPING AND EQUIPMENT AFTER ONE YEAR. SAFETY FENCING SHALL BE REQUIRED AROUND THE AREA UNTIL THE END OF THE ESTABLISHMENT PERIOD. CONTRACTOR TO REVIEW AND REPAIR SAFETY FENCING ON AN AS-NEEDED BASIS UNTIL THE END OF THE ESTABLISHMENT PERIOD. IF THE CONTRACTOR IS NOT ABLE TO FIND APPROPRIATE TREE SPECIES, CONTACT LANDSCAPE ARCHITECT FOR A FULL PLANT LIST OF ACCEPTABLE OPTIONS. THE LIST OF ACCEPTABLE OPTIONS MUST BE APPROVED BY THE CITY OF AUSTIN ERM(FLOODPLAIN MODIFICATION) REVIEWER PRIOR TO SUBSTITUTION. INVASIVE SPECIES MANAGEMENT: 6.1. CONTRACTOR SHALL MANAGE INVASIVE SPECIES ON SITE FOR A PERIOD OF ONE YEAR. SPECIES SHALL BE MANAGED ON A MONTHLY BASIS, AND REPORTS OF MANAGEMENT ACTIVITIES SHALL BE PROVIDED TO THE OWNER AND LANDSCAPE ARCHITECT WITHIN 5 WORKING DAYS OF MANAGEMENT ACTIVITIES. 6.2. WHEREVER POSSIBLE, INVASIVE SPECIES SHALL BE MANAGED BY MECHANICAL MEANS (HAND-PULLING). WHEN CHEMICAL MEANS ARE DEEMED TO BE REQUIRED, THE CONTRACTOR SHALL USE A PRODUCT RATED FOR AQUATIC AREAS, AND SHALL NOT WORK WITHIN 48 HOURS OF AN ANTICIPATED RAIN EVENT OR WHEN WIND SPEEDS ARE OVER 8 MILES PER HOUR. INVASIVE SPECIES TO BE MANAGED INCLUDE: LIGUSTRUM SP., ARUNDO DONAX, MELIA AZEDARACH, AILANTHUS ALTISSIMA, BROUSSONETIA PAPYFERA, TRIADICA SEBIFERA, SORGHUM HALEPENSE 6.3. 6.4. MORE INFORMATION CAN BE FOUND AT: HTTPS://WWW.TEXASINVASIVES.ORG/ CEFBM L F F L C E F B M L F FL M B F E C F L FL C C C C C WETLAND CEF LIMESTONE BLOCKS (TYP.) CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION EDUCATIONAL SIGNAGE TO BE PROVIDED AT THE EDGE OF WETLAND CEF. 150' WETLAND CEF SETBACK C E F B M M B F E C L F F L L F L F F L F L M B F E D C D M B F E C T T CEFBM L F L F L F L F F L F L F L F L F L T T D L F L F D E L F F L D L F F L FL FL E FL FL FL FL FL FL FL E FL FL FL FL FL FL FL T T . . ) ) . . E N A L E E W W R N N O O A A E R R L L C C R R K L L E E B B K K U U C P P C C E E E D D D 0 0 2 2 1 1 ( ( ' ' . . I I 150' WETLAND CEF SETBACK RIVE E E RIV RIV E D E D BLE WIDTH BLE WIDTH BLIC R.O.W.) BLIC R.O.W.) N N NE D STO STO RIA RIA R R E E A A U U RIV RIV (V (V P P RIVERSTO I I . . . . I I ) ) . . I E V R E E D V V R R W W D D H O O H H R R T T T C C R R L L R O O B B U U W W P P O T T N N E E W W W T N E W 4 4 6 6 ( ( ' ' E E D D T T G G GAS GAS E E G G GAS GAS CBL CBL G G L F F L E L F F L L F F L L F F L T T D L F F L E T T L F FL FL FL FL FL FL E FL F L L F PROPOSED 100 YEAR FLOODPLAIN LOYOLA LANE LOYOLA LANE LOYOLA LANE (120' PUBLIC R.O.W.) (120' PUBLIC R.O.W.) CBL CBL E E G G CBL CBL G G T T GAS GAS G G CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CEFBM CBL CBL CBL CBL GAS GAS D D GAS GAS G G GAS GAS GAS GAS D D GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS G G E GAS GAS D D CBL CBL Z H E CBL CBL CWQZ T T CBL CBL E E FL FL FL FL T T FL E FL E FL F L T T L F F L FL F L L F E DETENTION POND NATIVE OVER-SEEDING L F FL E SEDIMENTATION BASIN REF. SHEET 77 BIOFILTRATION BASIN REF. SHEET 77 L F F L F L CRITICAL WATER QUALITY ZONE PROPOSED 100 PROPOSED 100 YEAR FLOODPLAIN YEAR FLOODPLAIN L F L F L F CEFBM L F CWQZ HALF CWQZ MODIFIED CEF SETBACK CREEK CENTERLINE CREEK CENTERLINE LIMESTONE BLOCKS (TYP.) M B F E C Z Q W C Z H E CBL CBL CEFBM Z Q W C EHZ CEFBM Z C W Q Z H E CEFBM Z C W Q Z H E E H Z M B F E C EHZ Z C W Q CEFBM E H Z EDUCATIONAL SIGNAGE TO BE PROVIDED AT THE EDGE OF WETLAND CEF. ZONE 2 - ZONE 2 - WITHIN CWQZ 26,349 SF WITHIN CWQZ 26,349 SF PROPOSED 100 YEAR FLOODPLAIN CEF MITIGATION AREA CEF MITIGATION AREA REF. SHEET 71 REF. SHEET 71 E E CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION OUTFALL PLANTING, REF, SHEET 77 EHZ CEF MITIGATION AREA REF. SHEET 72 HALF CWQZ CWQZ Z H E Z Q W C V V T T CRITICAL WATER QUALITY ZONE E E EXISTING 100 YEAR FLOODPLAIN E E PROPOSED 20' PROPOSED 20' WASTEWATER EASEMENT WASTEWATER EASEMENT LEGEND C = CEF SETBACK TREE F = FLOODPLAIN TREE M = MITIGATION TREE N = NATIVE MITIGATION TREE P = PARKING TREE S = STREET YARD TREE CEF MITIGATION LANDSCAPE PLAN - LOCATED ON SHEETS 71 AND 72. FLOODPLAIN RESTORATION PLAN - LOCATED ON SHEETS 73 AND 74. BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. C-ANNO DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E FOR PERMIT ONLY 11/14/2024 I N A L P D O O L F I N O T A R O T S E R N A L P S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.03 73 SP-2024-0147C.SH OF 94 06 SP-2024-0147C.SH - Loyola Flats; District 15 of 10PLANT SCHEDULE FLOODPLAIN (ZONE 2) SYMBOL CODE QTY BOTANICAL NAME COMMON NAME CONT CALIPER SIZE REMARKS AS 88 PLATANUS OCCIDENTALIS AMERICAN SYCAMORE 1 GAL 1" CAL 12`-14` H X 4`-6` W MB 88 UNGNADIA SPECIOSA MEXICAN BUCKEYE 1 GAL 1" CAL 8`-10` H X 4`-6` W TO 88 QUERCUS TEXANA TEXAS RED OAK 1 GAL 1" CAL 12`-14` H X 4`-6` W SINGLE STRAIGHT TRUNK, FULL AND MATCHING SINGLE STRAIGHT TRUNK, FULL AND MATCHING SINGLE STRAIGHT TRUNK, FULL AND MATCHING SYMBOL CODE QTY BOTANICAL NAME COMMON NAME CONT SIZE SPACING REMARKS FLOODPLAIN (ZONE 2) (26,349 SF) AB3 FS TC3 88 88 88 FLOODPLAIN RESTORATION NOTES: CALLICARPA AMERICANA AMERICAN BEAUTYBERRY 1 GAL 36" H X 36" W 36" O.C. FULL AND MATCHING RHUS AROMATICA FRAGRANT SUMAC 1 GAL 36" H X 36" W 36" O.C. FULL AND MATCHING MALVAVISCUS ARBOREUS VAR. DRUMMONDII TURK'S CAP 1 GAL 36" H X 36" W 36" O.C. FULL AND MATCHING 1. 2. 3. 4. 5. 6. TREE SEEDLINGS SHALL BE PLANTED BETWEEN NOVEMBER AND FERUARY. SEED MIX SHALL BE APPLIED AS A HYDROMULCH OR WITH A BIODEGRADABLE BLANKET. PROVIDE PRODUCT DATA TO LANDSCAPE ARCHITECT FOR REVIEW. TEMPORARY IRRIGATION SHALL BE REQUIRED FOR A ONE YEAR ESTABLISHMENT PERIOD. CONTRACTOR TO BE RESPONSIBLE FOR REMOVAL OF IRRIGATION PIPING AND EQUIPMENT AFTER ONE YEAR. SAFETY FENCING SHALL BE REQUIRED AROUND THE AREA UNTIL THE END OF THE ESTABLISHMENT PERIOD. CONTRACTOR TO REVIEW AND REPAIR SAFETY FENCING ON AN AS-NEEDED BASIS UNTIL THE END OF THE ESTABLISHMENT PERIOD. IF THE CONTRACTOR IS NOT ABLE TO FIND APPROPRIATE TREE SPECIES, CONTACT LANDSCAPE ARCHITECT FOR A FULL PLANT LIST OF ACCEPTABLE OPTIONS. THE LIST OF ACCEPTABLE OPTIONS MUST BE APPROVED BY THE CITY OF AUSTIN ERM(FLOODPLAIN MODIFICATION) REVIEWER PRIOR TO SUBSTITUTION. INVASIVE SPECIES MANAGEMENT: 6.1. CONTRACTOR SHALL MANAGE INVASIVE SPECIES ON SITE FOR A PERIOD OF ONE YEAR. SPECIES SHALL BE MANAGED ON A MONTHLY BASIS, AND REPORTS OF MANAGEMENT ACTIVITIES SHALL BE PROVIDED TO THE OWNER AND LANDSCAPE ARCHITECT WITHIN 5 WORKING DAYS OF MANAGEMENT ACTIVITIES. 6.2. WHEREVER POSSIBLE, INVASIVE SPECIES SHALL BE MANAGED BY MECHANICAL MEANS (HAND-PULLING). WHEN CHEMICAL MEANS ARE DEEMED TO BE REQUIRED, THE CONTRACTOR SHALL USE A PRODUCT RATED FOR AQUATIC AREAS, AND SHALL NOT WORK WITHIN 48 HOURS OF AN ANTICIPATED RAIN EVENT OR WHEN WIND SPEEDS ARE OVER 8 MILES PER HOUR. INVASIVE SPECIES TO BE MANAGED INCLUDE: LIGUSTRUM SP., ARUNDO DONAX, MELIA AZEDARACH, AILANTHUS ALTISSIMA, BROUSSONETIA PAPYFERA, TRIADICA SEBIFERA, SORGHUM HALEPENSE 6.3. 6.4. MORE INFORMATION CAN BE FOUND AT: HTTPS://WWW.TEXASINVASIVES.ORG/ 7. IF A SPECIES IS NOT COMMERCIALLY AVAILABLE AT CONSTRUCTION, SPECIES SUBSTITUTIONS MAY BE ALLOWED PENDING APPROVAL BY THE WETLAND BIOLOGIST REVIEWER THROUGH A SITE PLAN CORRECTION. I E V R D E N O T S R E V R I COLONY LOOP DRIVE COLONY LOOP DRIVE (70' PUBLIC R.O.W.) (70' PUBLIC R.O.W.) COLONY LOOP DRIVE V V T T T T F F FIB FIB FIB FIB CBL CBL CBL CBL FIB FIB FIB FIB T T F F V V T T H T R O N CEFBM L F F L C E F B M L F FL M B F E C F L FL C C C C C WETLAND CEF LIMESTONE BLOCKS (TYP.) CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION EDUCATIONAL SIGNAGE TO BE PROVIDED AT THE EDGE OF WETLAND CEF. 150' WETLAND CEF SETBACK C E F B M M B F E C M B F E D C D M B F E C T T CEFBM L F L F F L F L F L L F L F L F F L F L L F L F F L F L F L T T D L F L F D E L F F L E E RIV RIV E D E D BLE WIDTH BLE WIDTH BLIC R.O.W.) BLIC R.O.W.) N N STO STO RIA RIA R R E E A A U U RIV RIV (V (V P P D L F F L FL FL E FL FL FL FL FL FL FL E FL FL FL FL FL FL FL T T . . ) ) . . E N A L E E W W R N N O O A A E R R L L C C R R K L L E E B B K K U U C P P C C E E E D D D 0 0 2 2 1 1 ( ( ' ' I I . . 150' WETLAND CEF SETBACK FL FL FL FL T T FL E FL E FL F L T T L F F L FL F L L F E DETENTION POND NATIVE OVER-SEEDING L F FL E SEDIMENTATION BASIN REF. SHEET 77 BIOFILTRATION BASIN REF. SHEET 77 L F F L F L CRITICAL WATER QUALITY ZONE PROPOSED 100 YEAR FLOODPLAIN L F L F L F CEFBM L F CWQZ HALF CWQZ MODIFIED CEF SETBACK CREEK CENTERLINE LIMESTONE BLOCKS (TYP.) M B F E C Z Q W C Z H E CBL CBL CEFBM Z Q W C EHZ CEFBM Z C W Q Z H E CEFBM Z C W Q Z H E E H Z M B F E C EHZ Z C W Q CEFBM E H Z EDUCATIONAL SIGNAGE TO BE PROVIDED AT THE EDGE OF WETLAND CEF. ZONE 2 - WITHIN CWQZ 26,349 SF PROPOSED 100 YEAR FLOODPLAIN CEF MITIGATION AREA REF. SHEET 71 E E CONSTRUCTION IS PROHIBITED WITHIN THE WETLAND CEF INCLUDING DISTURBANCE OF LAND AND REMOVAL OF WOODY VEGETATION 50' DRAINAGE EASEMENT VOL. 67 PAGE 10 RTC EHZ NONEROSIVE CONVEYANCE OUTFALL REF, SHEET 77 Z H E CEF MITIGATION AREA REF. SHEET 72 HALF CWQZ CWQZ Z Q W C V V T T CRITICAL WATER QUALITY ZONE E E EXISTING 100 YEAR FLOODPLAIN E E PROPOSED 20' WASTEWATER EASEMENT DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E FOR PERMIT ONLY 11/14/2024 I N A L P D O O L F I N O T A R O T S E R N A L P E P A C S D N A L S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.04 74 SP-2024-0147C.SH OF 94 LEGEND C = CEF SETBACK TREE F = FLOODPLAIN TREE M = MITIGATION TREE N = NATIVE MITIGATION TREE P = PARKING TREE S = STREET YARD TREE CEF MITIGATION LANDSCAPE PLAN - LOCATED ON SHEETS 71 AND 72. FLOODPLAIN RESTORATION PLAN - LOCATED ON SHEETS 73 AND 74. BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. RIVERSTONE DRIVE I I . . . . I I ) ) . . I E V R E E D V V R R W W D D H O O H H R R T T T C C R R L L R O O B B U U W W P P O T T N N E E W W W T N E W 4 4 6 6 ( ( ' ' E E D D T T G G GAS GAS E E G G GAS GAS CBL CBL G G L F F L E L F F L L F F L L F F L T T D L F F L E T T L F FL FL FL FL FL FL E FL F L L F PROPOSED 100 YEAR FLOODPLAIN LOYOLA LANE LOYOLA LANE LOYOLA LANE (120' PUBLIC R.O.W.) (120' PUBLIC R.O.W.) C-ANNO CBL CBL E E G G CBL CBL G G T T GAS GAS G G CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CBL CEFBM CBL CBL CBL CBL GAS GAS D D GAS GAS G G GAS GAS GAS GAS D D GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS G G E GAS GAS D D CBL CBL Z H E CBL CBL CWQZ T T CBL CBL E E 06 SP-2024-0147C.SH - Loyola Flats; District 16 of 10COLONY LOOP DRIVE (70' PUBLIC R.O.W.) V T T F PROPERTY LINE CBL CBL CBL CBL FIB FIB FIB FIB CBL CBL CBL CBL CBL CBL FIB FIB FIB FIB FIB FIB T F FIB FIB V T SEED PROPERTY LINE THIS AREA REQUIRES NATIVE GRASSLAND SEEDING AND PLANTING PER CITY OF AUSTIN STANDARD SPECIFICATION 609S, INCLUDING TOPSOIL AND SEED BED PREPARATION, TEMPORARY IRRIGATION, AND WEED MAINTENANCE C LEGEND POINT # (TAG NO.) EXISTING TREE TO REMAIN TREE PROTECTION FENCING POINT # (TAG NO.) EXISTING HERITAGE TREE TO REMAIN STREET YARD AREA H T R O N HALF-CRITICAL ROOT ZONE C = CEF SETBACK TREE N = NATIVE MITIGATION TREE F = FLOODPLAIN TREE P = PARKING TREE M = MITIGATION TREE S = STREET YARD TREE PLANTING SCHEDULE & CITY CODE LOCATED ON SHEET 68 PLANT SCHEDULE SYMBOL CODE COMMON NAME TREES BC BALD CYPRESS P P T P P E M M 78 D T E P P P 79 T E D T P P M M M M M M M E M M M M M M M T E P P D E P E P M M M M P M D E D BM BIGTOOTH MAPLE AB3 AMERICAN BEAUTYBERRY FLOODPLAIN (ZONE 2) (26,349 SF) KEY MAP V T V T T F C C C C C C C C C C C C P M C C C C P C M M C C C C C P 75 P P D D T P P P M P M P M M M P T D P P D E E 76 P P M P P T F T D P P E M P M M M M M M M M Z M M 77 H E P P T P P E P E E P P M M E E C C C C C C C C H E C C C Z T C C C C E V T E EXISTING TREE TO REMAIN (TYP.) HALF-CRITICAL ROOT ZONE (TYP.) LO LIVE OAK RO SHUMARD RED OAK MITIGATION AREA (57,227 SF) FS FRAGRANT SUMAC TC3 TURK'S CAP AMERICAN BEAUTYBERRY DETENTION POND NARROW-LEAF PURPLE CONEFLOWER SEED GRASS SEED MIX TURK'S CAP MITIGATION AREA CEF SETBACK (3,185 SF) BW BLACK WILLOW PROPERTY LINE BO BURR OAK C LIMESTONE BLOCK (TYP.) SEE DETAIL C, SHEET 84 C FLOODPLAIN (ZONE 2) CE CEDAR ELM AB2 AMERICAN BEAUTYBERRY WM WHITE MISTFLOWER MITIGATION AREA (EASEMENT) SEED2 GRASS SEED MIX MITIGATION AREA (EASEMENT) SEED3 GRASS SEED MIX PC2 NARROW-LEAF PURPLE CONEFLOWER SEDIMENTATION BASIN DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E CO CHINQUAPIN OAK TF2 EASTERN GAMA GRASS FOR PERMIT ONLY 11/14/2024 MW2 LINDHEIMER’S MUHLY HM2 MAXIMILIAN SUNFLOWER TREE PROTECTION FENCING (TYP.) SEE DETAIL B, SHEET 88 METAL EDGING (TYP.) SEE DETAIL B, SHEET 84 DUMPSTER ENCLOSURE REF. ARCH PLANS (TYP.) PROPERTY LINE SEED M B F E C M B F E C M B F E C M B F E C L F L F L F L F L F L F L F M B F E C M B F E C D M B F E C D M B F E C M B F E C T SEED M B F E C P L F M B F E C M B F E C M B F E C L F L F L F L F L F P L F L F L F L F C C C C C C C C C C E F B M P C E F B M CEFBM P FL FL CEFBM C CEFBM C F L F L F L FL FL FL F L F L F L P FL FL F L C C C C C M F L F L F L F L F L F L F L F L F L F L P M SOD P M MATCHLINE, SHEET 76 STREET YARD (TYP.) BIKE RACK REF. CIVIL PLANS PROPOSED SCREENING FENCE (TYP.) 50' TREE RADIUS (TYP.) PROPERTY LINE METAL EDGING (TYP.) SEE DETAIL B, SHEET 84 CEFBM AB PC TC EG SG BS TF C E F B M M M C C C C E F B M SOD E N A L R E K C E D ) . . . W O R C I L B U P ' 0 2 1 ( SEED PROPOSED SCREENING FENCE (TYP.) M B F E C M B F E C M B F E C M B F E C AS AMERICAN SYCAMORE NONEROSIVE CONVEYANCE OUTFALL MB MEXICAN BUCKEYE TO TEXAS RED OAK GROUND COVERS TC2 TURK'S CAP WM2 WHITE MISTFLOWER EASTERN GAMAGRASS SWITCH GRASS BIOFILTRATION BASIN SOD BERMUDA GRASS LH NEW GOLD LANTANA BIG BLUESTEM EASTERN GAMA GRASS YU INLAND SEAOATS CO2 CHINQUAPIN OAK MW LINDHEIMER’S MUHLY SHRUBS HM MAXIMILIAN SUNFLOWER DWARF BURFORD HOLLY MM SWITCHGRASS MITIGATION AREA (57,227 SF) BW2 BLACK WILLOW BO2 BUR OAK CE2 CEDAR ELM BH DP YH NS BB LM DWARF PODOCARPUS DWARF YAUPON HOLLY NELLIE R. STEVENS HOLLY BUSHY BLUESTEM LINDHEIMER MUHLY CEF SETBACK (3,185 SF) CEF SETBACK (EASEMENT) (1,762 SF) BB2 BUSHY BLUESTEM LM2 LINDHEIMER MUHLY Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' N A L P E P A C S D N A L S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.05 75 SP-2024-0147C.SH OF 94 06 SP-2024-0147C.SH - Loyola Flats; District 17 of 10H T R O N V T V T T F C C C C C C C C C C C C P M C C C C P C M M C C C C C P 75 P P D D T P P P M P M P M M M P T D P P D E E 76 P P M P P T F T D P P E M P M M M M M M M M Z M M 77 H E P P T P P E P E E P P M M E E C C C C C C C C H E C C C Z T C C C C E V T E P P T P P E M M 78 D T E P P P 79 T E D T P P M M M M M M M E M M M M M M M T E P P D E P E P M M M M P M D E D KEY MAP LEGEND POINT # (TAG NO.) EXISTING TREE TO REMAIN TREE PROTECTION FENCING POINT # (TAG NO.) EXISTING HERITAGE TREE TO REMAIN STREET YARD AREA HALF-CRITICAL ROOT ZONE C = CEF SETBACK TREE N = NATIVE MITIGATION TREE F = FLOODPLAIN TREE P = PARKING TREE M = MITIGATION TREE S = STREET YARD TREE PLANTING SCHEDULE & CITY CODE LOCATED ON SHEET 68 MATCHLINE, SHEET 76 M M SOD STREET YARD (TYP.) T PROPERTY LINE FL FL FL FL FL FL P FL FL FL FL FL FL FL FL P FL FL FL E FL FL FL F L F L P F L E F L F L DETENTION POND M CEFBM M CEFBM SOD CEFBM CEFBM CEFBM CEFBM M CEFBM SEED PROPOSED SCREENING FENCE (TYP.) Z C W Q Z H E Z C W Q CEFBM H Z E Z Q W C M B F E C Z Z H C W Q E Z H E Z C W Q Z H E Z C W Q CEFBM EHZ Z C W Q CEFBM EHZ Z C W Q Z H E SEED E FL FL E L F F L SEDIMENTATION BASIN L F METAL EDGING (TYP.) SEE DETAIL B, SHEET 84 L F TRANSFORM PAD (TYP.) REF. CIVIL SHEETS L F L F F L F L P CEFBM L F FL L F CEFBM 8 7 T E E H S , I E N L H C T A M F L L F P F L SOD F L FL F L F L L F BIOFILTRATION BASIN L F P FL 4 ROWS OF STAGGERED NATIVE TALL BUNCH GRASSES [EASTERN GAMAGRASS (TRIPSACUM DACTYLOIDES) AND SWITCHGRASS (PANICUM VIRGATUM)] ON 2-FT CENTERS Z C W Q Z H E Z C W Q Z C W Q Z H E Z C W Q Z H E Z C W Q H Z E E H Z SEED Z Q W C EHZ Z Q W C HZ E CEFBM M CEFBM M SEED C W QZ Z H E Z Q W C Z H E M B F E C M B F E C M B F E C Z Q W C Z Q W C M B F E C Z Q W Z C H E STREET YARD (TYP.) EXISTING TREE TO REMAIN (TYP.) SOD HALF-CRITICAL ROOT ZONE (TYP.) Z C H E C Z H C E C H Z C E C C E H Z C Z H E C Z H E C C EHZ C E H Z C C TREE PROTECTION FENCING (TYP.) H E SEE DETAIL B, SHEET 88 Z C EHZ EHZ E N A L R E K C E D ) . . . W O R C I L B U E P ' 0 2 1 ( SEED Q Z W C V T CEFBM CEFBM CBL CBL CBL THIS AREA REQUIRES NATIVE GRASSLAND SEEDING AND PLANTING PER CITY OF AUSTIN STANDARD SPECIFICATION 609S, INCLUDING TOPSOIL AND SEED BED PREPARATION, TEMPORARY IRRIGATION, AND WEED MAINTENANCE CBL CBL CBL GAS GAS GAS GAS GAS GAS GAS GAS GAS CBL CBL CBL PROPERTY LINE CBL CBL CBL CBL CBL CBL CBL CBL CBL T CWQZ CWQZ CWQZ CWQZ CWQZ E PROPERTY LINE LIMESTONE BLOCKS (TYP) SEE DETAIL C, SHEET 84 G Z H E LOYOLA LANE (120' PUBLIC R.O.W.) PROPOSED 20' WASTEWATER EASEMENT DOC NO _____________ E Know what'sbelow. Call before you dig. WARNING: CONTRACTOR IS TO VERIFY PRESENCE AND EXACT LOCATION OF ALL UTILITIES PRIOR TO CONSTRUCTION. M B F E C M B F E C M B F E C Z Q W C Z Q W C Z Q W C DRE STE RG EG O M I R EP L CAA NDS K A N . D A R C H IE P T I N E E C T S T 63 6 1 A T E OF T SA X E FOR PERMIT ONLY 11/14/2024 N A L P E P A C S D N A L S T A L F A L O Y O L E N A L R E K C E D 0 0 7 6 I N T S U A F O Y T C I S A X E T , Y T N U O C S V A R T I SHEET NUMBER LP 1.07 77 SP-2024-0147C.SH OF 94 BENCHMARKS 1. MAG NAIL WITH WASHER SET ON THE NORTHEAST LINE OF LOYOLA LANE, NORTH 66°28'29" WEST, 230.01 FEET FROM THE SOUTHEAST CORNER OF TRACT 1. ELEVATION=544.25' 2. MAG NAIL WITH WASHER SET ON THE WEST LINE OF DECKER LANE, NORTH 35°35'40" EAST, 174.55 FEET FROM THE SOUTHEAST CORNER OF TRACT NO. 2 ELEVATION=546.22' 06 SP-2024-0147C.SH - Loyola Flats; District 18 of 10 ENVIRONMENTAL COMMISSION RECOMMENDATION 20241204-003 Seconded by: Perry Bedford Date: December 4, 2024 Subject: Loyola Flats, SP-2024-0147C.SH Motion by: Jennifer Bristol WHEREAS, the Environmental Commission recognizes the applicant is requesting to vary from LDC 25-8-261(G) to allow floodplain modification in the Critical Water Quality Zone (CWQZ); and WHEREAS, the Environmental Commission recognizes this project is proposing modification of the City of Austin 100-year floodplain within the Critical Water Quality Zone (CWQZ) to construct a biofiltration and detention pond and provide compensatory flood storage within the existing engineered drainage channel for a Smart Housing/Affordability Unlocked multifamily residential development. There are two wetland Critical Environmental Features (CEFs) on the site, located within existing drainage channels; and WHEREAS, the Environmental Commission recognizes the site is located in Elm Creek Watershed Suburban Classification, Desired Development Zone; and WHEREAS, the Environmental Commission recognizes that Staff recommends the variance with the following conditions: 1. Provide ~44,000 square feet of additional wetland mitigation including: 1) native plantings in sedimentation and filtration basins of the biofiltration pond, 2) low-grow native seeding in the detention pond, 3) an enhanced nonerosive pond outfall, 4) planting of native trees, shrubs and bunchgrasses in CEF setbacks and mitigation areas. 2. Provide native pollinator species for wetland CEF mitigation and floodplain restoration plantings. 3. Provide an edge barrier of limestone blocks around the perimeter of the modified CEF setbacks/restoration areas to prevent mowing and/or encroachment in these areas. 4. Provide wetland CEF educational signage next to the CEF setbacks/restoration areas. 5. Provide floodplain restoration plantings of native trees and shrubs for the remaining open area (26,349 square feet/0.61 acres) maximizing restoration within the CWQZ and enhancing the floodplain from an existing condition of Fair to Excellent. 6. Pay $382,157.63 into the Riparian Zone Mitigation Fund for the remaining required floodplain mitigation (376,326 square feet/8.63 acres) using the appropriate ratios per ECM 1.7.6. 06 SP-2024-0147C.SH - Loyola Flats; District 19 of 10THEREFORE, the Environmental Commission recommends the variance request with the following conditions: 1. Recommend finding a space for a community garden and provide education programing and signage to community members. 2. Partner with local non-profits on community gardening. 3. Recommend planting native pecan trees. VOTE 7-0 For: Haris Qureshi, Mariana Krueger, Hanna Cofer, Perry Bedford, Jennifer Bristol, Melinda Schiera, David Sullivan Against: None Recuse: None Absent: Richard Brimer and Colin Nickells Approved By: Perry Bedford, Environmental Commission Chair 06 SP-2024-0147C.SH - Loyola Flats; District 110 of 10