Plans (1).pdf

CITY OF

FAIR OAKS RANCH

CHARTWELL CHANNEL STABILIZATION & EROSION CONTROL

PREPARED BY:

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PREPARED FOR:

40 NE Loop 410 Mercantile Building, Suite 545 San Antonio, Texas 78216 P 210.491.2391 TBPE Firm No. 10488 www.hwlochner.com

NTS

LOCATION MAP

JUNE 2026

CITY OF FAIR OAKS RANCH

7286 DIETZ ELKHORN

FAIR OAKS RANCH, TX 78015

N

SCOTT HUIZENGA

CITY MANAGER

GRANT WATANABE

DIRECTOR OF PUBLIC WORKS

LEE MUÑIZ

MANAGER OF ENGINEERING PR

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CITY OF

FAIR OAKS RANCH

CITY OF

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PROJECT

LOCATION

SHEET INDEX

Sheet Number Sheet Title

1 COVER SHEET

2 GENERAL NOTES

3 PROPOSED CHANNEL PLAN & PROFILE

4 TYPICAL SECTIONS AND DETAILS

5 TREE PRESERVATION DETAILS

6/19/2026

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DESIGNED BY

REVIEWED BY

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40 NE Loop 410 Mercantile Building, Suite 545 San Antonio, Texas 78216 P 210.491.2391 TBPE Firm No. 10488 www.hwlochner.com

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CONTRACTOR SHALL CALL "811" FOR UTILITY LOCATES

AT THE START OF CONSTRUCTION.

EROSION CONTROL NOTES:

1. A CONSTRUCTION ENTRANCE SHALL BE LOCATED SO AS TO PROVIDE THE LEAST AMOUNT OF

DISTURBANCE TO THE FLOW OF TRAFFIC IN AND OUT OF THE SITE. INCLUDE ALL COSTS IN LUMP SUM

EROSION AND SEDIMENTATION CONTROL PER COSA ITEM 540.

2. THE NATURE OF THIS SITE'S CONSTRUCTION CONSISTS OF:

A. CLEARING AND GRUBBING

B. PRELIMINARY GRADING

C. FINAL GRADING AND STABILIZATION

3. POST CONSTRUCTION STORM WATER POLLUTION CONTROL MEASURES INCLUDE STABILIZATION BY

PERMANENT LANDSCAPING.

4. DISTURBED PORTIONS OF SITE MUST BE STABILIZED. STABILIZATION PRACTICES MUST BE INITIATED WITHIN 14 DAYS IN PORTIONS OF THE SITE WHERE CONSTRUCTION HAS BEEN EITHER TEMPORARILY OR PERMANENTLY CEASED. CONTRACTOR SHALL REMOVE TEMPORARY EROSION CONTROL DEVICES UPON

COMPLETION OF STABILIZATION AND PERMANENT DRAINAGE FACILITIES.

5. CONTRACTOR SHALL INSPECT DISTURBED AREAS, MATERIAL STORAGE AREAS EXPOSED TO

PRECIPITATION, STRUCTURAL CONTROL MEASURES, AND VEHICLE ENTRY AND EXIT AREAS AT LEAST ONCE EVERY 14 CALENDAR DAYS AND WITHIN 24 HOURS OF A STORM EVENT OF 0.5 INCHES OR

GREATER.

6. CONTRACTOR SHALL PREPARE, SUBMIT, INSTALL, MAINTAIN, AND REMOVE ALL TEMPORARY EROSION AND SEDIMENTATION CONTROLS REQUIRED TO COMPLY WITH TCEQ SWPPP, CITY REQUIREMENTS, AND THE CONTRACT DOCUMENTS. NO SEPARATE PAYMENT WILL BE MADE. INCLUDE ALL COSTS IN LUMP SUM

EROSION AND SEDIMENTATION CONTROL PER COSA ITEM 540.

7. CONTRACTOR IS SOLELY RESPONSIBLE FOR SELECTION, IMPLEMENTATION, MAINTENANCE, AND

EFFECTIVENESS OF ALL SWPPP CONTROLS.

8. CONTRACTOR SHALL RECORD INSTALLATION, MAINTENANCE OR MODIFICATION, AND REMOVAL DATES

FOR EACH EROSION CONTROL BMP EMPLOYED.

9. TEMPORARY AND PERMANENT STABILIZATION PRACTICES AND BMP'S SHALL BE INSTALLED AT THE EARLIEST POSSIBLE TIME DURING THE CONSTRUCTION SEQUENCE. AS AN EXAMPLE, PERIMETER SILT FENCE SHALL BE INSTALLED BEFORE COMMENCEMENT OF ANY GRADING ACTIVITIES. OTHER BMP'S SHALL BE INSTALLED AS SOON AS PRACTICABLE AND SHALL BE MAINTAINED UNTIL FINAL SITE

STABILIZATION IS ATTAINED.

10.THE DISTURBED AREAS TO RECEIVE SEED MIXES SHALL BE FROM HYDROSEED. COORDINATE

HYDROSEED MIX WITH SEED SUPPLIER'S CURRENT RECOMMENDATION BY APPLICATION AND SLOPE

ASPECT.

11.PERMANENT STABILIZATION SEED MIX: FROM SEPTEMBER 1 TO MARCH 1, 1 POUND PER 1,000 SQUARE FEET OF UNHULLED BERMUDA FROM MARCH 2 TO AUGUST 31, 1 POUND PER 1,000 SQUARE FEET OF

HULLED BERMUDA.

12. ALTERNATE SEED MIXES CAN BE USED WITH ENGINEER'S WRITTEN APPROVAL.

13.FROM SEPTEMBER 1 TO MARCH 1, 70 POUNDS PER ACRE OF WINTER RYE WITH A PURITY OF 95% WITH

90% GERMINATION SHALL BE ADDED TO EACH SEED MIX.

14.FROM MARCH 2 TO AUGUST 31, 30 POUNDS PER ACRE OF FOXTAIL MILLET WITH A PURITY OF 95% WITH

85% GERMINATION SHALL BE ADDED TO EACH SEED MIX.

15.FERTILIZER SHALL BE A WATER SOLUBLE FERTILIZER WITH AN ANALYSIS OF 15-15-15 AT THE RATE OF 1.5

POUNDS PER 1,000 SQUARE FEET.

16.RESTORATION SHALL BE ACCEPTABLE WHEN THE GRASS HAS GROWN AT LEAST 1-1/2 INCHES HIGH WITH

95% COVERAGE, PROVIDED NO BARE SPOTS LARGER THAN 16 SQUARE FEET EXIST.

17.CONTRACTOR SHALL IDENTIFY AND PROTECT EXISTING PUBLIC, PRIVATE, FRANCHISE, TELEPHONE, ELECTRIC, CABLE, GAS, AND OTHER UTILITY SERVICE LINES DURING CONSTRUCTION. ANY DAMAGE TO THESE FACILITIES SHALL BE REPAIRED AT NO ADDITIONAL PAY. ADDITIONAL UTILITIES MAY EXIST WHICH

ARE NOT SHOWN ON THESE PLANS.

18.CONFLICTS IN PLANS AND/OR SPECIFICATIONS FOUND BY THE CONTRACTOR SHALL BE PROMPTLY

REPORTED TO THE CITY BEFORE PROCEEDING WITH CONSTRUCTION.

19.DURING CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTENANCE OF FENCING.

DAMAGED FENCING SHALL BE REPLACED WITH EQUAL OR BETTER MATERIALS AND WORKMANSHIP. THE CONTRACTOR SHALL COORDINATE WITH THE LANDOWNER FOR ANY WORK WITHIN PRIVATE PROPERTY.

20.NO WASTE MATERIALS SHALL BE PLACED IN EXISTING LOWS THAT WILL BLOCK OR ALTER THE FLOW OF

WATER WITHIN THE CHANNEL.

21.CONSTRUCTION SPOILS WILL BE DISPOSED OFFSITE IN COMPLIANCE WITH CURRENT APPLICABLE

REGULATIONS AND THESE PLANS AND SPECIFICATIONS.

22.ESTABLISH FINAL GRADES TO ASSURE POSITIVE DRAINAGE.

GENERAL QUANTITIES:

GENERAL NOTES:

1. THE CONTRACTOR WILL NOTIFY THE OWNER’S REPRESENTATIVE FORTY-EIGHT (48) HOURS IN ADVANCE

OF BEGINNING ANY CONSTRUCTION IN THE RIGHT-OF-WAY OR EASEMENTS.

2. THE INFORMATION SHOWN ON THESE DRAWINGS INDICATING TYPE AND LOCATION OF SURFACE, SUBSURFACE, AND AERIAL UTILITIES IS NOT GUARANTEED TO BE EXACT OR COMPLETE. THE

CONTRACTOR IS RESPONSIBLE FOR DETERMINING THE EXACT TYPE AND LOCATION OF ALL UTILITIES

AFFECTED BY THE CONSTRUCTION IN ORDER TO AVOID DAMAGING THOSE UTILITIES.

3. THE CONTRACTOR SHALL COORDINATE WITH OTHER CONTRACTORS AND UTILITIES IN THE VICINITY OF THIS PROJECT. THIS INCLUDES, BUT IS NOT LIMITED TO, GAS, WATER, WASTEWATER, ELECTRIC, TELEPHONE, CABLE TELEVISION, PETROLEUM PIPELINES, FIBER OPTIC, STREET, DRAINAGE, AND ANY OTHER WORK OCCURRING IN OR NEAR THE PROJECT SITE. ONCE THE CONTRACTOR BECOMES AWARE OF A POSSIBLE CONFLICT, IT IS THE CONTRACTOR’S RESPONSIBILITY TO NOTIFY THE OWNER’S REPRESENTATIVE IMMEDIATELY, BUT NO LATER THAN TWENTY-FOUR (24) HOURS AFTER DISCOVERY.

4. SHOULD THE CONTRACTOR DAMAGE A UTILITY DURING THE COURSE OF THE WORK, THE CONTRACTOR

SHALL IMMEDIATELY ARRANGE FOR REPAIR AND RESTORATION OF THE DAMAGED UTILITY. THE

EXPENSE FOR THESE REPAIRS WILL BE AT THE CONTRACTOR’S SOLE EXPENSE.

5. ALL EXISTING STRUCTURES, FACILITIES, AND UTILITIES DAMAGED BY CONSTRUCTION SHALL BE

REMOVED AND RESTORED WITH MATERIALS EQUAL TO OR BETTER THAN THE ORIGINAL. UNLESS

OTHERWISE NOTED IN THE PLANS, THIS WILL NOT BE MEASURED AND PAID FOR DIRECTLY, BUT SHALL

BE AT THE CONTRACTOR’S SOLE EXPENSE.

6. THE CONTRACTOR SHALL UNCOVER AND VERIFY THE DEPTHS AND HORIZONTAL LOCATION OF ALL

EXISTING WATER, WASTEWATER, AND GAS MAINS TO BE ALTERED OR SUBJECT TO DAMAGE OR

INCONVENIENCE BY THIS PROJECT PRIOR TO COMMENCING CONSTRUCTION. NO SEPARATE PAY ITEM.

7. SLOPES OF ROADWAY CUTS AND EMBANKMENTS DAMAGED BY ANY OPERATION OF THE CONTRACTOR DURING THE EXECUTION OF THIS PROJECT SHALL BE REPAIRED AND RESTORED TO THE ORIGINAL PRE-CONSTRUCTION CONDITION. BACKFILL AND FILL PLACED DURING REMEDIAL GRADING SHALL BE

COMPACTED TO AT LEAST 95% COMPACTION AND TO THE SATISFACTION OF THE ENGINEER AND

GOVERNING AUTHORITIES.

8. THE SITE IS LOCATED IN THE EDWARDS AQUIFER CONTRIBUTING ZONE.

9. THE CONTRACTOR SHALL NOTIFY ALL RESIDENTS WITHIN THE CONSTRUCTION AREAS 48 HOURS PRIOR TO BEGINNING CONSTRUCTION OF THE PROJECT VIA DOOR FLYERS. THE FLYER IS TO CONSIST OF, BUT

IS NOT LIMITED TO:

A. CONSTRUCTION START DATE AND ESTIMATED COMPLETION DATE.

B. DESCRIPTION OF CONSTRUCTION.

C. TIME FRAME THE RESIDENT WILL BE WITHOUT WATER IF TEMPORARY SHUTDOWNS ARE

REQUIRED, PROVIDED 48 HOURS IN ADVANCE OF WORK.

D. CONTRACTOR’S CONTACT INFORMATION.

E. CITY’S CONTACT INFORMATION.

10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ACQUIRING ANY NECESSARY OFF-SITE LOCATIONS FOR STORAGE OF ALL EQUIPMENT AND MATERIALS REQUIRED FOR THE CONSTRUCTION OF THE PROJECT.

11. THE CONTRACTOR SHALL BE RESPONSIBLE FOR REMOVAL OF ALL WASTE MATERIALS DURING CONSTRUCTION AND UPON COMPLETION. THIS WORK WILL BE DONE IN A TIMELY MANNER AS APPROVED BY THE ENGINEER. THIS WORK WILL NOT BE PAID FOR DIRECTLY, BUT CONSIDERED SUBSIDIARY TO THE

VARIOUS BID ITEMS.

12. BLASTING WITHIN THE PROJECT AREA WILL NOT BE ALLOWED.

13. CONTRACTOR WILL MINIMIZE USE OF STREET PARKING BY THEIR EMPLOYEES AND SUBCONTRACTORS

IN THE VICINITY OF THE CONSTRUCTION AREA.

14. ALL LOCATIONS USED FOR STORING CONSTRUCTION EQUIPMENT, MATERIALS, AND STOCKPILES OF ANY

TYPE WITHIN THE CONSTRUCTION LIMITS SHALL BE APPROVED IN ADVANCE BY THE OWNER’S

REPRESENTATIVE. USE OF THE AREA WITHIN THE CONSTRUCTION LIMITS FOR THESE PURPOSES WILL BE RESTRICTED TO THOSE LOCATIONS WHERE DRIVER SIGHT DISTANCE TO BUSINESSES AND SIDE

STREET INTERSECTIONS IS NOT OBSTRUCTED AND AT OTHER LOCATIONS WHERE AN UNSIGHTLY

APPEARANCE, AS DETERMINED BY THE OWNER’S REPRESENTATIVE, WILL NOT EXIST.

15. ALL SITE WORK MUST COMPLY WITH ENVIRONMENTAL REQUIREMENTS INCLUDING TCEQ, TPDES STANDARDS, CLEAN WATER ACT, TPDES GENERAL PERMIT TXR150000 (MS4), AND CITY OF FAIR OAKS

RANCH REQUIREMENTS.

16. IF CULTURAL RESOURCES ARE ENCOUNTERED DURING CONSTRUCTION (ARCHAEOLOGICAL FINDS UNEARTHED), CONTRACTOR SHALL STOP WORK IN THAT AREA AND IMMEDIATELY CONTACT THE TEXAS

HISTORICAL COMMISSION AT (512) 463-6100.

17. THE CONTRACTOR SHALL ENSURE THAT ADEQUATE SAFETY PRECAUTIONS ARE MAINTAINED AT ALL TIMES REGARDING AREAS OF OPEN PIPE TRENCH. ALL PIPE TRENCHES SHALL BE COVERED AT ALL TIMES WHEN CONSTRUCTION IS NOT IN PROGRESS. THE TRENCH COVERING SHALL BE CAPABLE OF

SUPPORTING TRAFFIC LOADS.

18. ALL TRENCH SAFETY CONSTRUCTION OPERATIONS SHALL BE ACCOMPLISHED IN ACCORDANCE WITH OSHA SPECIFICATIONS, STATE OF TEXAS REQUIREMENTS, AND CONTRACT DOCUMENTS WHICH INCLUDE

A TRENCH SAFETY PLAN AND A PAY ITEM FOR TRENCH SAFETY MEASURES.

19. THE CONTRACTOR SHALL ARRANGE THE OPERATION IN SUCH A MANNER AS TO AVOID UNNECESSARY

INCONVENIENCE TO THE PUBLIC IN CONSTRUCTION AREAS.

20. CONTRACTOR SHALL NOTIFY THE CITY OF FAIR OAKS RANCH POLICE DEPARTMENT (210-698-0990) AND BEXAR COUNTY EMERGENCY SERVICES DISTRICT 4 (210-698-1593) OF THE CONSTRUCTION SCHEDULES AT LEAST TWO WEEKS IN ADVANCE OF PROPOSED CONSTRUCTION OPERATIONS. CONTRACTOR SHALL

PROVIDE PERTINENT INFORMATION ABOUT LANE CLOSURES AND DETOURS AND ANY OTHER

CONSTRUCTION-RELATED ACTIVITY WHICH MAY INTERFERE WITH NORMAL SERVICES.

21. CONTRACTOR SHALL MAINTAIN THE JOB SITE IN A SAFE, NEAT, AND WORKMANLIKE MANNER AT ALL TIMES. JOB SITE SAFETY SHALL NOT BE COMPROMISED. ANY UNATTRACTIVE NUISANCE SHALL BE

REMOVED OR CAMOUFLAGED BY CONTRACTOR WHEN DIRECTED BY THE OWNER OR ENGINEER.

CONTRACTOR SHALL REMOVE OR CAMOUFLAGE ANY CHILD-ATTRACTIVE NUISANCE.

22. CONTRACTOR SHALL PERFORM WORK ONLY DURING HOURS ALLOWED PER THE CURRENT

ORDINANCES.

23. THE CONTRACTOR SHALL RE-ESTABLISH ANY PROPERTY MARKER, BENCHMARK, ETC. DISTURBED DURING CONSTRUCTION TO ITS ORIGINAL LOCATION AND ELEVATION. NO ADDITIONAL COMPENSATION SHALL BE ALLOWED. THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING THE VERTICAL AND HORIZONTAL CONTROL SHOWN ON THE PLANS THROUGHOUT THE PROJECT, RE-ESTABLISH DISTURBED OR DESTROYED ITEMS BY A REGISTERED LAND SURVEYOR IN THE STATE OF TEXAS AT NO ADDITIONAL

COST TO THE CITY.

24. FENCES, GATES, GROUND SURFACES, CURBS, DRIVEWAYS, MAILBOXES, ETC. SHALL BE LEFT IN A

CONDITION EQUAL TO OR BETTER THAN THAT FOUND.

25. LANDSCAPED AREAS SHALL BE LEFT UNDISTURBED AS MUCH AS POSSIBLE DURING CONSTRUCTION. ALL AREAS THAT HAVE BEEN DISTURBED DURING CONSTRUCTION SHALL BE RE-SODDED, RE-VEGETATED, AND RESTORED TO ORIGINAL OR BETTER CONDITIONS. ALL NEW VEGETATION MUST BE OF THE SAME

SPECIES AS ORIGINAL CONDITIONS.

26. ACCESS TO ALL SIDE STREETS AND DRIVEWAYS SHALL BE MAINTAINED AT ALL TIMES AT THE SOLE EXPENSE OF THE CONTRACTOR UNLESS OTHERWISE DIRECTED BY THE OWNER’S REPRESENTATIVE.

27. CONTRACTOR IS RESPONSIBLE FOR COORDINATING WITH ALL PROPERTY OWNERS PRIOR TO ANY

FENCE OR GATE REMOVAL FOR PET MANAGEMENT PURPOSES.

28. CONTRACTOR IS RESPONSIBLE FOR VERIFYING CONDITION OF ANY IRRIGATION LINES PRIOR TO

CONSTRUCTION.

29. CONTRACTOR IS RESPONSIBLE FOR COORDINATING RELOCATION OF PRIVATE IRRIGATION LINES WITH

ALL PROPERTY OWNERS PRIOR TO CONSTRUCTION.

30. SHOULD CONSTRUCTION IMPACT RESIDENTS RECEIVING SOLID WASTE COLLECTION SERVICES (GARBAGE COLLECTION, RECYCLING COLLECTION, ORGANICS COLLECTION, BRUSH COLLECTION, BULK-TRASH COLLECTION), CONTRACTOR SHALL NOTIFY FRONTIER WASTE SERVICES AT 210-807-8555 TO JOINTLY COORDINATE A SERVICE DELIVERY PLAN IN ORDER TO MINIMIZE DISRUPTION OF ROUTINE

SOLID WASTE COLLECTION SERVICES DURING CONSTRUCTION.

31. CONTRACTOR AGREES TO ABIDE BY THE LANDOWNERS’ WRITTEN CONDITIONS IN LANDOWNER AGREEMENTS INCLUDING THOSE RELATED TO PLACEMENT, COMPACTION, RESTORATION, AND EROSION CONTROL MEASURES OF THE SITE(S). IT IS THE CONTRACTOR’S RESPONSIBILITY TO OBTAIN WRITTEN APPROVAL FROM THE LANDOWNER(S) PRIOR TO PLACEMENT, AND ANY COSTS THE CITY INCURS TO ADDRESS LEGITIMATE LANDOWNER CONCERNS WILL BE CONSIDERED AND MAY BE DEDUCTED FROM THE CONTRACTOR’S FINAL PAYMENT AS DETERMINED BY THE CITY. THE CITY RESERVES THE RIGHT TO

REQUEST A COPY OF THE AGREEMENT BETWEEN THE LANDOWNER AND THE CONTRACTOR.

32. CONTRACTOR SHALL BE RESPONSIBLE FOR ACCESS TO THE SITE. ANY DAMAGE TO GABION BASKETS

WILL BE THE RESPONSIBILITY OF THE CONTRACTOR IF DAMAGED.

33. CONTRACTOR TO REPAIR OR REPLACE IN KIND, AT ITS OWN EXPENSE, ANY STRUCTURES DAMAGED IN

THE COURSE OF EXECUTING THE WORK.

SURVEY CONTROL:

1. BASIS OF BEARINGS IS THE TEXAS STATE PLANE COORDINATE SYSTEM, NAD83, SOUTH

CENTRAL ZONE (4204), AS ESTABLISHED BY GPS OBSERVATIONS.

2. VERTICAL CONTROL IS REFERENCED TO NAVD88, GEOID 18, AS ESTABLISHED BY GPS

OBSERVATIONS.

3. ALL COORDINATE VALUES HEREIN ARE SURFACE VALUES DERIVED BY MULTIPLYING NAD83

GRID COORDINATES BY THE SURFACE ADJUSTMENT FACTOR OF 1.00017.

4. RIGHT OF WAY IS APPARENT AND HAS BEEN RESOLVED TO BE WITHIN ONE FOOT OF ACTUAL.

BENCHMARK AND CONTROL POINTS:

BM 800: CP 900:

SKETCHED "X" IN CURB 1/2" IRON ROD W/RED CAP STAMPED

ELEV: 1326.42' "MAESTAS CONTROL"

N:13814631.55 ELEV: 1326.02'

E:2087373.16 N:13814739.51

E:2087298.84

CP 901: CP 902:

SKETCHED "X" IN CURB 1/2" IRON ROD W/RED CAP STAMPED

ELEV: 1311.57' "MAESTAS CONTROL"

N:13814622.66 ELEV: 1315.52'

E:2087668.90 N:13814873.00

E:2087298.43

6-256975

KEEL RYAN A & CASSIE

(DOC. NO. 20190129631, OPRBCT)

LOT 609

CHARTWELL SUBDIVISION

(VOL. 9530, PG. 102, DPRBCT)

7235 CHARTWELL CIR

BOERNE, TX 78015

EXIST FENCE TO REMAIN

(SEE NOTE 15)

1-253517

CAVANAUGH JOSEPH &

STOCKBRIDGE MARGARET

(DOC. NO. 20210116248, OPRBCT)

LOT 4

FAIR OAKS RANCH SUBDIVISION

(VOL. 7600, PG. 209, DPRBCT)

29046 PREAKNESS LN

BOERNE, TX 78015

SOUTH TRIBUTARY

PROPOSED

CENTERLINE

NORTH TRIBUTARY

PROPOSED CENTERLINE

67 SY - 15" D50

ROCK RIPRAP

GRADE CHANNEL WITH LONGITUDINAL

SLOPE NOT TO EXCEED 2.0% WITH 10'

MIN. BOTTOM WIDTH.

(SEE NOTE 7 FOR CHANNEL REPAIR/FILL)

1+00 2+00

2+16

"B"

"B"

"A"

"A"

INSTALL:

585 SY - EROSION

CONTROL BLANKET

585 SY - TOPSOIL &

DRILL SEED

1315 1315

PROPOSED

DRAINAGE ESMT

REMOVE AND REPLACE

±57 LF - WIRE FENCE

(SEE NOTE 5)

EL. 1313.24

EL. 1316.79

EL. 1313.24

EL. 1313.24

EL. 1315.24

EL. 1313.39

EL. 1313.39

EL. 1313.39

EL. 1313.64

EL. 1313.64

25' 14.2'

6' 6'

15' 15' 5'

EL. 1317.00

EL. 1317.00

EL. 1316.15

EL. 1316.41

EL. 1317.00

50' DRAINAGE ESMT

(VOL 9530, PG 222, DPR)

EL. 1316.91

EL. 1316.15

EL. 1317.00

EL. 1316.15

TP TP

TP TP

EXIST TREE

W/LEVEL II

PROTECTION

(SEE SHEET 5)

10 SY - 15" D50 ROCK

RIPRAP PILOT CHANNEL

9 SY - 15" D50 ROCK

RIPRAP PILOT CHANNEL

EXIST DEAD TREE

#30283 TO BE REMOVED

12 SY - 15" D50

ROCK RIPRAP

EL. 1316.41

TEMPORARY DRAINAGE ESMT

(FOR 7235 CHARTWELL CIR)

TEMPORARY DRAINAGE ESMT

(FOR 29046 PREAKNESS LN)

EXIST FENCE

TO REMAIN

REMOVE AND REPLACE

±56 LF - WIRE FENCE

(SEE NOTE 5)

2-256992

LOWMAN DAREN

(DOC. NO. 20170081563, OPRBCT) LOT 624

CHARTWELL SUBDIVISION

(VOL. 9530, PG. 102, DPRBCT)

28907 CHARTWELL LN, BOERNE, TX 78015EXIST DEAD TREES #30284

& #30284 TO BE REMOVED

EXIST TREE W/LEVEL II PROTECTION

(SEE SHEET 5)

INSTALL:

10 LF GATE (VEHICULAR)

(SEE NOTE 6)

0+80 1+20 1+60 2+00 2+40

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EXIST GROUND

.1

.3

.5

.3

.3

.1

.3

.9

.8

.0

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PROFILE SCALE:

1" = 20' HORZ.

1" = 5' VERT.

1.0%

6:1

MAX

1.0%

1.0%

ST

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7.

2'

15" D50 ROCK RIPRAP,

30" MIN. THICKNESS

3:1

MAX

MINOR CHANNEL

REGRADING TO

ELEV 1313.0

2'

6" MIN. GRANULAR BEDDING

(ASTM C33 NO. 3 AGGREGATE)

GEOTEXTILE NON-WOVEN

NEEDLE PUNCH, 12 OZ/SQ YD

6" TO BOTTOM

OF WEEP HOLES

4"Ø PVC PIPE WEEP

HOLES W/COPPER

SCREEN @ 6'-0" O.C. MAX.

6" CONCRETE W/#6

@ 12" O.C.E.W.

6" MIN. GRANULAR BEDDING

(ASTM C33 NO. 3 AGGREGATE)

GEOTEXTILE NON-WOVEN

NEEDLE PUNCH, 12 OZ/SQ YD

15" D50 ROCK RIPRAP,

30" MIN. THICKNESS

2:1

2:

EXIST FENCE/

LOT LINE

50' DRAINAGE ESMT

EXIST FENCE TO BE

REMOVED & REPLACED

(SEE PLAN FOR LIMITS)

28'

±3 .5

5' 2'

CHANNEL

CL

6'6'

4"Ø PVC PIPE WEEP

HOLES W/COPPER

SCREEN @ 6'-0" O.C. MAX.

ON EACH SIDE (TYP.)

12" COMPACTED SELECT

FILL SPEC 210S

(FLEX BASE)(TYP)

COMPACTED SUBGRADE

6" CONCRETE W/#6

@ 12" O.C.E.W.

6"

EXIST GROUND

3:1

3:

15'

(VARIES)

MIN. DEPTH = 1'

VARIES(3:1 MAX)

NORTH TRIBUTARY

CL

SOUTH TRIBUTARY

CL

COMPACTED FILL

(TYP)

VARIES

(3:1 MAX)

EXIST FENCE

EXIST LOT LINE

10'

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DESIGNED BY

REVIEWED BY

NOTES NAME DATE

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FINAL SUBMITTAL

HORIZONTAL SCALE IN FEET

VERTICAL SCALE IN FEET

10 20

SHEET 3 5

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NOTES:

1. PLACE ROCK RIPRAP TO A MINIMUM THICKNESS OF 30", OR TO BEDROCK, WHICHEVER OCCURS FIRST.

IF BEDROCK IS ENCOUNTERED OR EXPOSED PRIOR TO PLACEMENT OF THE FULL 30" THICKNESS, NOTIFY THE ENGINEER FOR DIRECTION.

2. PLACE NON-WOVEN GEOTEXTILE AND MINIMUM 6" GRANULAR SUBLAYER BELOW RIPRAP. NO SEPARATE

PAY ITEM FOR GEOTEXTILE.

3. CONTRACTOR SHALL COORDINATE WITH THE CITY PRIOR TO CONSTRUCTION TO IDENTIFY ALL TREES

TO BE PRESERVED AND PROTECTED. TREE PROTECTION AND REMOVAL SHALL BE PAID UNDER

PREPARING RIGHT-OF-WAY.

4. CONTRACTOR SHALL SEED ALL DISTURBED AREAS FOR EROSION PROTECTION.

5. INSTALL PROPOSED FENCE OVER DROP STRUCTURE AS SHOWN. PROVIDE 12-INCH MINIMUM

CLEARANCE BETWEEN BOTTOM OF FENCE AND FINISHED CHANNEL/APRON ELEVATION FOR FULL

LENGTH OF CONCRETE APRON, UNLESS NOTED OTHERWISE. DO NOT OBSTRUCT FLOW THROUGH THIS OPENING. CONTRACTOR SHALL FIELD VERIFY DIMENSIONS AND SUBMIT SHOP DRAWINGS SHOWING POSTS, FRAMING, CONNECTIONS, AND CLEARANCES FOR APPROVAL PRIOR TO FABRICATION AND

INSTALLATION.

6. LOCATION OF 10 FOOT ACCESS GATE SHALL BE COORDINATED WITH CITY PRIOR TO INSTALLATION.

7. REMOVE ALL LOOSE, ERODED, AND UNSUITABLE MATERIAL WITHIN THE LIMITS OF THE HEADCUT AND

CHANNEL REPAIR AREA TO REACH FIRM, STABLE SUBGRADE. PREPARED SUBGRADE SHALL BE

PROOFED AND COMPACTED. REBUILD CHANNEL SECTION USING SELECT FILL OR FLEXIBLE BASE PLACED IN MAXIMUM 6" LIFTS AND COMPACTED TO 95% STANDARD PROCTOR DENSITY. FINAL CHANNEL

GRADES SHALL MATCH PROPOSED DESIGN GRADES AND TRANSITION SMOOTHLY INTO EXISTING

STABLE CHANNEL UPSTREAM AND DOWNSTREAM. SEE SHEET 4 FOR CHANNEL CONDITION PHOTOS.

8. ALL DISTURBED AREAS SHALL BE REVEGETATED IN ACCORDANCE WITH TxDOT OR CITY OF SAN

ANTONIO SPECIFICATIONS, AS APPLICABLE.

9. PROVIDE 4" MINIMUM TOPSOIL IN ALL DISTURBED AREAS. DRILL SEED ALL DISTURBED AREAS WITH

APPROVED NATIVE GRASS SEED MIX.

10. INSTALL SOIL RETENTION BLANKET OVER SEEDED AREAS FOR EROSION CONTROL.

11. MAINTAIN SEEDED AREAS, INCLUDING WATERING, RESEEDING, AND REPAIR, UNTIL A UNIFORM

VEGETATIVE COVER IS ESTABLISHED.

12. REPAIR AND REVEGETATE ANY AREAS DAMAGED BY EROSION PRIOR TO FINAL ACCEPTANCE. (NO

SEPARATE PAY ITEM)

13. SALVAGE ALL ROCK AND STONE GREATER THAN 12 INCHES IN ANY DIMENSION (BOULDERS) REMOVED

DURING CONSTRUCTION. STOCKPILE AND RELOCATE ON-SITE AT LOCATIONS DIRECTED BY THE CITY.

NO OFF-SITE DISPOSAL WITHOUT WRITTEN CITY APPROVAL. (NO SEPARATE PAY ITEM)

14. BURIED OR PARTIAL BURIED STRUCTURES (INCLUDING BUT NOT LIMITED TO GABION BASKETS, CONCRETE, DEBRIS, OR ABANDONED IMPROVEMENTS) ENCOUNTERED WITHIN THE LIMITS OF

CONSTRUCTION SHALL BE REMOVED AND DISPOSED OF BY THE CONTRACTOR. REMOVAL, EXCAVATION, BACKFILL, AND RESTORATION TO PROPOSED LINES AND GRADES SHALL BE CONSIDERED INCIDENTAL

TO PREPARATION OF RIGHT-OF-WAY.

15. CONTRACTOR IS RESPONSIBLE FOR PROTECTION EXISTING FENCING UNLESS OTHERWISE NOTED ON THE PLANS. REPAIR OR REPLACE ANY FENCING DAMAGED BY CONSTRUCTION ACTIVITIES AT NOT

ADDITIONAL COST.

SECTION A-A

NOT TO SCALE

SECTION B-B

NOT TO SCALE

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DESIGNED BY

REVIEWED BY

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STRUCTURAL NOTES:

1. ALL CONCRETE WORK SHALL CONFORM TO THE TXDOT

STANDARD SPECIFICATIONS.

2. ALL DETAILING, FABRICATION AND ERECTION OF REINFORCING

BARS, UNLESS OTHERWISE NOTED, MUST FOLLOW THE A.C.I.

“MANUAL OF STANDARD PRACTICE FOR DETAILING

REINCORCED CONCRETE”, A.C.I. #315 LATEST EDITION.

3. CONCRETE SHALL HAVE A MINIMUM 4,000 PSI COMPRESSIVE

STRENGTH AT 28 DAYS.

4. REINFORCING BARS SHALL BE NEW BILLET STEEL CONFORMING

TO ASTM A-615, GRADE 60.

5. STANDARD PROTECTIVE COVER OF REINFORCING BARS

UNLESS OTHERWISE NOTED SHALL BE 3 INCHES WHERE CAST

AGAINST DIRT OR FILL AND 2 INCHES WHERE EXPOSED TO

EARTH OR WEATHER.

6. SHOP DRAWINGS SHALL BE PREPARED FOR ALL REINFORCING

STEEL AND SUBMITTED FOR REVIEW BY ENGINEER.

ENGINEERING DRAWINGS SHALL NOT BE REPRODUCED AND

USED AS SHOP DRAWINGS.

7. WELDING OF REINFORCING BARS SHALL NOT BE PERMITTED,

UNLESS APPROVED BY ENGINEER.

8. NO GEOTECHNICAL INVESTIGATION WAS PERFORMED FOR THIS

DESIGN. DESIGN IS BASED ON ASSUMED COMPETENT

SUBGRADE CONDITIONS. CONTRACTOR SHALL VERIFY ACTUAL

SUBSURFACE CONDITIONS IN THE FIELD AND SHALL

IMMEDIATELY NOTIFY THE ENGINEER IF UNSUITABLE

MATERIALS, ORGANICS, SOFT SOILS, EXCESSIVE MOISTURE, OR

OTHER ADVERSE CONDITIONS ARE ENCOUNTERED.

9. REMOVE ALL SOIL MATERIAL TO THE REQUIRED GRADE.

EXPOSED SUBGRADE SHALL BE PROOFED, REWORKED AS

NECESSARY, AND COMPACTED TO 95 PERCENT OF MAXIMUM

DRY DENSITY, WITH MOISTURE CONDITIONED AS NEEDED, IN

ACCORDANCE WITH TXDOT METHOD TEX-113-E, OR AS

DIRECTED BY THE ENGINEER BASED ON FIELD CONDITIONS.

10. IF UNSUITABLE MATERIAL IS ENCOUNTERED, IT SHALL BE

REMOVED TO THE EXTENT NECESSARY AND REPLACED WITH

APPROVED SELECT FILL OR FLEXIBLE BASE, AS DIRECTED BY

THE ENGINEER.

11. SELECT FILL, WHEN REQUIRED, SHALL CONSIST OF CRUSHED

LIMESTONE BASE MATERIAL CONFORMING TO TXDOT ITEM 247

OR ITEM 210, AS APPLICABLE.

12. SELECT FILL SHALL BE PLACED IN LIFTS NOT EXCEEDING 6

INCHES IN COMPACTED THICKNESS AND COMPACTED TO A

MINIMUM OF 95 PERCENT OF MAXIMUM DRY DENSITY AT A

MOISTURE CONTENT APPROPRIATE FOR COMPACTION, IN

ACCORDANCE WITH TXDOT METHOD TEX-113-E.

2'

REINFORCEMENT DETAIL TOE-DOWN

(UPSTREAM & DOWNSTREAM)

NOT TO SCALE

6" CONCRETE

12" COMPACTED

SELECT FILL SPEC 210S

(FLEX BASE)(TYP)

CONCRETE SECTION

NOT TO SCALE

#6 BARS @

12" O.C.E.W.

9"

6"

COMPACTED SELECT

FILL SPEC 210S

(FLEX BASE)(TYP)

ROCK RIPRAP OR

COMPACTED FILL

TRANSITION

(REF. PLANS)

#6 CONT. @ 12" O.C.E.W.

#4 STIRRUPS @

12" O.C. (TYP)

#6 CONT. @ 12" O.C.

EACH FACE (TYP)

2 - #6 CONT. TOP

& BOT. (TYP)

CONCRETE BEND SECTION

NOT TO SCALE

12" COMPACTED

SELECT FILL SPEC 210S

(FLEX BASE)(TYP)

6" CONCRETE

PERMISSIBLE

CONSTRUCTION JOINT*

*THIS JOINT MUST BE A

VERTICAL JOINT AS SHOWN

#6 DOWEL BARS @ 12" O.C.

ON ALL SIDES OF SLOPE

30"

30"

COMPACTED

SUBGRADE

REINFORCEMENT DETAIL TOE-DOWN

(SIDE SLOPES)

NOT TO SCALE

12"

2'

#6 CONT. @ 12" O.C.E.W.

6"

TY

P

3"

CHANNEL CONDITION PHOTO 1 - LARGE, LOOSE

RUBBLE TO BE REMOVED (SEE SHEET 3, NOTE 7)

CHANNEL CONDITION PHOTO 2 - LARGE, LOOSE

RUBBLE TO BE REMOVED (SEE SHEET 3, NOTE 7)

9"

9"

0'- 6"

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DESIGNED BY

REVIEWED BY

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40 NE Loop 410 Mercantile Building, Suite 545 San Antonio, Texas 78216 P 210.491.2391 TBPE Firm No. 10488 www.hwlochner.com

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A. FIRST CUT - TO PREVENT THE BARK FROM BEING

PEELED WHEN THE BRANCH FALLS.

B. SECOND CUT - TO REDUCE THE WEIGHT OF

BRANCH.

C. FINAL CUT - ALLOW FOR HEALING COLLAR BUT NO

STUBS

D. BRANCH RIDGES - INDENT PROPERLY BRANCH

RIDGES WHICH ARE SITE FOR DECAY.

NOT TO SCALE

8" MULCH UNDER DRIP LINE AS

MINIMAL PROTECTION FOR

ROOTS FROM CONSTRUCTION

ACTIVITIES

NOTE:

1. THE FENCING SHOWN ABOVE IS DIAGRAMATIC

ONLY AND WILL CONFORM TO THE DRIP LINE AND

LIMITED TO PROJECT BOUNDARY.

2. FOR ACCEPTABLE FENCING MATERIALS SEE

SPECIFICATIONS.

GENERAL NOTES:

1. ALL THE TREES WITH A DIAMETER GREATER THAN 3 INCHES AFFECTED BY CONSTRUCTION SHALL

HAVE THE LIMBS AND ROOTS TRIMMED AND PRUNED ACCORDING TO ITEM No. 802. TREE PRUNING, SOIL AMENDING AND FERTILIZATION, UNLESS SPECIFIED TREES SHALL RECEIVE LEVEL 2

PROTECTION AS PER ITEM No. 802. TREES TO RECEIVE LEVEL 1 PROTECTION AS PER ITEM No. 802

ARE SHOWN ON TREE PROTECTION TABLE ON THIS SHEET.

2. ALL TREES SHALL REMAIN UNLESS NOTED ON THE PLANS.

3. NO SITE PREPARATION WORK SHALL BEGIN IN AREAS WHERE TREE PRESERVATION AND

TREATMENT MEASURES HAVE NOT BEEN COMPLETED AND APPROVED.

4. TREE PROTECTION FENCING SHALL BE REQUIRED. TREE PROTECTION FENCING SHALL BE

INSTALLED, MAINTAINED AND REPAIRED BY THE CONTRACTOR DURING SITE CONSTRUCTION.

5. THE CONTRACTOR SHALL AVOID CUTTING ROOTS LARGER THAN THREE INCHES IN DIAMETER. WHEN

EXCAVATING NEAR EXISTING EXCAVATION IN THE VICINITY OF TREES SHALL PROCEED WITH

CAUTION. THE CONTRACTOR SHALL CONTACT THE CITY INSPECTOR.

6. THE ROOT PROTECTION ZONE IS THAT AREA SURROUNDING A TREE, AS MEASURED BY A RADIUS FROM THE TREE TRUNK, IN WHICH NO EQUIPMENT, VEHICLES OR MATERIALS MAY OPERATE OR BE

STORED. THE REQUIRED RADIUS LENGTH IS 1 FOOT PER DIAMETER INCH OF THE TREE. FOR

EXAMPLE, A 10-INCH DIAMETER TREE WOULD HAVE A 5-FOOT RADIUS ROOT PROTECTION ZONE

AROUND THE TREE. ROOTS OR BRANCHES THAT ARE IN CONFLICT WITH THE CONSTRUCTION SHALL

BE CUT CLEANLY ACCORDING TO PROPER PRUNING METHODS. LIVE OAK WOUNDS SHALL BE

PAINTED OVER, WITHIN 20 MINUTES TO PREVENT OAK WILT. ACCESS TO FENCED AREAS WILL BE

PERMITTED ONLY WITH THE APPROVAL OF THE ENGINEER OR CITY INSPECTOR.

7. GRADING, IF REQUIRED, SHALL BE LIMITED TO A 3 INCH CUT OR FILL WITHIN THE FENCED ROOT

ZONE AREAS.

8. TREES, SHRUBS OR BUSHES TO BE CLEARED FROM PROTECTED ROOT ZONE AREAS SHALL BE

REMOVED BY HAND AS DIRECTED BY THE PROJECT MANAGER OR CITY INSPECTOR.

9. TREES DAMAGED OR LOST DUE TO CONTRACTOR'S NEGLIGENCE DURING CONSTRUCTION SHALL BE

MITIGATED TO THE ENGINEER'S SATISFACTION.

10. EXPOSED ROOTS SHALL BE COVERED AT THE END OF EACH DAY USING TECHNIQUES SUCH AS

COVERING WITH SOIL, MULCH OR WET BURLAP.

11. ANY TREE REMOVAL SHALL BE APPROVED BY THE CITY ARBORIST PRIOR TO ITS REMOVAL.

12. ACCESS TO FENCED AREAS WILL BE PERMITTED ONLY WITH THE APPROVAL OF THE ENGINEER OR

CITY INSPECTOR.

NOTE:

A" REMOVE BULKY TREE PARTS "SHRED"

AND/OR HAUL SEPARATELY.

"B" BEGIN EXCAVATION APPROX. 8' FROM

THE TRUNK - CUT THRU ANCHOR ROOTS AT

AN ANGLE - 3' TO 4' DEEP

"C" USING TREE TRUNK AS A LEVER PUSH

AT POINT "E" TO REMOVE TREE BOLE AND

LARGE FEEDER ROOTS (4" TO 10" IN DIAM.)

"D" BACKFILL HOLE AND CLEAN UP.

FOR OAKS ONLY: PAINT ALL WOUNDS OR CUTS WITH

PRUNING PAINT WITHIN 20 MIN TO PREVENT THE SPREAD

OF OAK WILT.

AS NEEDED TO PROTECT TREES IN WORK AREAS.

WRAP TREE TRUNK WITH 2"X4" STUDS AND ROPE OR BAND IN PLACE

"B"

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BRANCH COLLAR

LIVE BRANCH

PROPER PRUNING FOR

BRANCHES 1 1/2" OR

GREATER IN DIAMETER.

BRANCH BARK RIDGE

DEAD BRANCH

C

NOTE: DO NOT CUT FROM D to E.

E

E

AB

C

A B

D

D

FIGURE No.2:

A MINIMUM BRANCH CLEARANCE OF 14 FEET ABOVE

STREET ELEVATION MUST BE MAINTAINED FROM THE

PROPERTY LINE TO THE CURB LINE AS PRESCRIBED

BY PROJECT MANAGER.

STREET

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OFFLIMITS

TREE/SHRUB

ABSORBING ROOTS

GRADE

5' 3' "C""C" "B"

"A" "A"

"E"

ROOT PROTECTION

(RPZ)

LIMITS

OFF

ZONE

OFF

LIMITS

TUNNEL TO MINIMIZE ROOT DAMAGE (TOP) AS OPPOSED TO

SURFACE-DUG TRENCHES IN ROOT PROTECTION ZONE WHEN

THE 5' MINIMUM DISTANCE FROM TRUNK CAN NOT BE ACHIEVED.

TREES THAT ARE MARKED TO BE PRESERVED ON A SITE PLAN AND

FOR WHICH UTILITIES MUST PASS TROUGH THEIR ROOT

PROTECTION ZONES MAY REQUIRE TUNNELING AS OPPOSED TO

OPEN TRENCHES. THE DECISION TO TUNNEL WILL BE DETERMINED

ON A CASE BY CASE BASIS BY THE ENGINEER.

TUNNELS SHALL BE DUG THROUGH THE ROOT PROTECTION ZONE

IN ORDER TO MINIMIZE ROOT DAMAGE.

ZONE

(RPZ)

ROOT PROTECTION

3" MULCH INSIDE RPZ

IF BARE DIRT

8" MULCH OUTSIDE RPZ

PROTECTION

MINIMUM 5' FROM TRUNK

4'

2X4

4"

12" MIN & 48"

MAX DEPTH

6" MULCH INSIDE RPZ

DRIP LINE

AND UNDER DRIP LINE AS

MINIMAL PROTECTION FOR ROOTS

FROM CONSTRUCTION ACTIVITIES

OPEN TRENCHING MAY BE USED IF EXPOSED TREE ROOTS DO

NOT EXCEED 3" OR ROOTS CAN BE BENT BACK.

NOTE:

LEVEL IIA MINIMUM 5'

FROM THE TRUNK

RPZ

(ROOT PROTECTION ZONE)

LEVEL I

WHEN BARE DIRT

TREE CANOPY

ROOT PROTECTION

ZONE (RPZ)

TREE

TRUNK

ROOT PROTECTION

ZONE (RPZ)

PROPERTY LINE

TREE

TRUNK

STREET

5'

CURB

ROOT PROTECTION ZONE

THE ROOT PROTECTION ZONE IS A CIRCULAR AREA AROUND A TREE THAT IS BASED ON THE DIAMETER OF THE TREE. EACH 1 INCH DIAMETER OF THE TREE EQUALS 1 FOOT RADIUS FOR ROOT PROTECTION ZONE.

8 FEET MIN. FOR SIDEWALK

14 FEET MIN.

NOTES:

1. OPTION USED FOR TIGHT CONSTRUCTION AREAS OR

WHEN CONSTRUCTION OCCURS IN ROOT

PROTECTION ZONE.

2. FOR ACCEPTABLE FENCING MATERIALS SEE

SPECIFICATIONS.

ESTABLISH

ELEVATION

NOT TO SCALE

LEVEL II B FENCE PROTECTION

NOT TO SCALE

BRANCH PRUNING DETAIL

NOT TO SCALE

BRANCH CLEARANCE DETAIL

NOT TO SCALE

BORING THRU TREE ROOT ZONENEW TREE PLANTING DETAIL

NOT TO SCALE

PLANTER TOPSOIL

4" MULCH AS SPECIFIED

COMPACTED BACKFILL

BACKFILL AS SPECIFIED

FINISHED GRADE

4" SAUCER

TREE ROOT BALL

SPREAD

HEIGHT

12" MIN.

12" MIN.

6"

TREE REMOVAL DIAGRAM

NOT TO SCALE

LEVEL I FENCE PROTECTION

NOT TO SCALE

LEVEL II FENCE PROTECTION

NOT TO SCALE