SEALED 584463 Gonzales 2024 WTP Pressure Filter Rehabilitation Plans.pdf

PDF 17 MB Posted Jul 3, 2024

Attached to: SSLGC Water Treatment Plant Pressure Filter Rehabilitation Project
Solicitation number: AF-2024-42
Issued by: Glasscock County, Texas

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Written by GovTribe AI · Apr 10, 2025

The document is a detailed set of engineering plans for the Schertz-Seguin Local Government Corporation's 2024 Pressure Filter Rehabilitation project at the Gonzales Water Treatment Plant, prepared by TRC Engineers, Inc. The project involves comprehensive rehabilitation of water treatment filters, specifically Filters #8, #10, and #12, with a comprehensive scope of work including replacing multiple valves, filter media, manway gaskets, solenoid banks, air hoses, and performing interior blast and repainting. The project will require replacing 13 butterfly valves per filter, four air release valves, eight manway gaskets, and performing intricate rehabilitation tasks such as replacing trough piping, underdrain nozzles, and the PVC header/lateral air wash system. The plans specify that only one filter can be out of service at any given time, and all work must be coordinated with the owner with a 14-day advance notice.

The project documents outline specific technical requirements for valve replacements, with detailed time constraints for each type of valve replacement, ranging from 4 to 12 hours depending on the valve type and system impact. The rehabilitation includes precise media specification requirements, with layer depths and material specifications carefully defined, including anthracite, manganese greensand, and various grades of sand and gravel. The project includes additive alternate bid items for additional work such as replacing manway covers, flow meters, and sections of ductile iron pipe. The engineering plans are dated June 2024 and include comprehensive notes on environmental considerations, safety requirements, utility protection, and contractor responsibilities, emphasizing meticulous coordination and minimal disruption to existing water treatment operations.

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TRC PROJECT NUMBER: 584463

N , S

, T

77A

KERRVILLE

NEW BRAUNFELS

SAN ANTONIO

ROUND ROCK

AUSTIN

VICTORIA

PORT LAVACA

BAY CITY

EL CAMPO

FREEPORT

ANGLETON

ROSENBERG

ALVIN

HOUSTON

THE WOODLANDSBRENHAM

HUNTSVILLEBRYAN

SEGUIN

NTS

505 E. HUNTLAND DRIVE, STE. 250 AUSTIN, TX 78752

T.B.P.E. FIRM REGISTRATION # F-8632

(512) 454 - 8716

TRC ENGINEERS, INC.

NIXON

WILD MEADOW

US-87

TX-80

-1117

CR-127

TX-97

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%%UJUNE 2024

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%%UVICINITY MAP

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PROJECT LOCATION

AutoCAD SHX Text SCHERTZ-SEGUIN LGC GONZALES WATER TREATMENT PLANT 2024 PRESSURE FILTER REHABILITATION BID NO. AF-2024-42 AF-2024-42

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PROJECT LOCATION

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SHEET INDEX

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COVER SHEET & LOCATION MAP

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GENERAL CONSTRUCTION NOTES

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SITE PLAN

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FILTER ROOM PLAN VIEW

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FILTER ROOM SECTION VIEW 1

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FILTER ROOM SECTION VIEW 2

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FILTER ROOM SECTION VIEW 3

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SOLENOID PANEL MODIFICATIONS

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A. GENERAL NOTES

1. BLASTING IS NOT PERMITTED ON THIS PROJECT.

2. ALL CONSTRUCTION OPERATIONS SHALL BE ACCOMPLISHED IN ACCORDANCE WITH APPLICABLE REGULATIONS

OF THE UNITED STATES OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION.

3. THESE PLANS DO NOT EXTEND TO OR INCLUDE DESIGNS OR SYSTEMS PERTAINING TO THE SAFETY OF THE CONSTRUCTION CONTRACTOR OR ITS EMPLOYEES, AGENTS OR REPRESENTATIVES IN THE PERFORMANCE OF THE WORK. THE SEAL OF THE REGISTERED PROFESSIONAL ENGINEER(S) HEREON DOES NOT EXTEND TO ANY

SUCH SAFETY SYSTEMS THAT MAY NOW OR HEREAFTER BE INCORPORATED IN THE WORK.

4. THE TRENCH EXCAVATION AND SHORING SAFETY SYSTEM, AS OUTLINED IN THE TECHNICAL SPECIFICATIONS, WILL BE REQUIRED AS A MINIMUM TRENCH SAFETY MEASURE.

5. A PRE-CONSTRUCTION CONFERENCE IS TO BE HELD PRIOR TO BEGINNING CONSTRUCTION. THIS CONFERENCE SHALL TAKE PLACE AT A LOCATION SELECTED BY OWNER AND ENGINEER. CONTRACTOR TO ARRANGE A

MEETING DATE WITH THE OWNER AT LEAST SEVEN DAYS PRIOR TO THE MEETING TIME.

6. CONTRACTOR SHALL NOTIFY THE OWNER, OWNER'S REPRESENTATIVE, AND TCEQ BY TELEPHONE A MINIMUM OF 48 HOURS IN ADVANCE OF CONSTRUCTION STARTUP, FOLLOWED BY A LETTER OF CONFIRMATION.

7. CONTRACTOR SHALL ASSURE HIMSELF THAT ALL CONSTRUCTION PERMITS HAVE BEEN OBTAINED PRIOR TO COMMENCEMENT OF WORK. REQUIRED PERMITS THAT CAN ONLY BE ISSUED TO CONTRACTOR ARE TO BE

OBTAINED AT THE CONTRACTOR'S EXPENSE.

8. CONTRACTOR SHALL GIVE A MINIMUM OF 48 HOURS NOTICE TO ALL AUTHORIZED INSPECTORS, SUPERINTENDENTS, OR PERSONS IN CHARGE OF PRIVATE AND PUBLIC UTILITIES AFFECTED BY HIS OPERATIONS

PRIOR TO COMMENCEMENT OF WORK.

9. CONTRACTOR SHALL TAKE ALL DUE PRECAUTIONS TO PROTECT EXISTING FACILITIES FROM DAMAGE. ANY DAMAGE TO EXISTING FACILITIES INCURRED AS A RESULT OF THESE CONSTRUCTION OPERATIONS ARE TO BE REPAIRED IMMEDIATELY BY THE CONTRACTOR TO AT LEAST THE PRE-EXISTING CONDITION AT NO ADDITIONAL

COST TO OWNER.

10. LOCATION OF EXISTING UTILITIES SHOWN ON PLANS WAS COMPILED FROM RECORD INFORMATION. NO WARRANTY IS IMPLIED AS TO THE ACTUAL LOCATION OF EXISTING UTILITIES. CONTRACTOR TO FIELD VERIFY

LOCATIONS OF EXISTING UTILITIES PRIOR TO COMMENCEMENT OF CONSTRUCTION.

11. WHEN UNLOCATED OR INCORRECTLY LOCATED UNDERGROUND PIPING OR A BREAK IN A LINE OR OTHER UTILITIES AND SERVICES ARE ENCOUNTERED DURING SITE WORK OPERATIONS, THE CONTRACTOR SHALL NOTIFY THE APPLICABLE UTILITY COMPANY IMMEDIATELY TO OBTAIN PROCEDURE DIRECTIONS. THE CONTRACTOR SHALL COOPERATE WITH THE APPLICABLE UTILITY COMPANY IN MAINTAINING ACTIVE SERVICES

IN OPERATION.

12. THE CONTRACTOR SHALL MAINTAIN ACCESS TO PUBLIC AND PRIVATE FACILITIES DURING CONSTRUCTION.

CONSTRUCTION ACTIVITIES TO BE COORDINATED WITH THE OWNER.

13. THE CONTRACTOR SHALL COORDINATE INTERRUPTIONS OF ALL UTILITIES AND SERVICES WITH APPLICABLE UTILITY COMPANY OR COMPANIES. ALL WORK SHALL BE IN ACCORDANCE WITH THE REQUIREMENTS OF THE

APPLICABLE UTILITY COMPANY OR AGENCY INVOLVED.

14. THE CONTRACTOR SHALL LOCATE, PROTECT, AND MAINTAIN BENCHMARKS, MONUMENTS, AND CONTROL POINTS. RE-ESTABLISH DISTURBED OR DESTROYED ITEMS BY REGISTERED PUBLIC SURVEYOR IN THE STATE OF

TEXAS AT NO ADDITIONAL COST TO OWNER.

15. EXISTING PAVING, BUILDINGS, AND OTHER ITEMS SHOWN ON PLANS NOT SPECIFICALLY RELATED TO THE

WORK OF THE CONTRACTOR IS FOR INFORMATION ONLY.

16. DEMOLITION PERMITS (IF NEEDED) ARE TO BE OBTAINED BY THE CONTRACTOR.

17. COORDINATES SHOWN FOR STRUCTURE LOCATIONS ARE REFERENCED TO OUTSIDE FACE OF EXTERIOR WALL

AT GRADE OR TO CENTERLINE OF STRUCTURE, UNLESS NOTED OTHERWISE ON PLANS.

18. EXISTING SURFACE AND SUBSURFACE STRUCTURES (GAS MAINS, WATER MAINS, STORM SEWERS, TELEPHONE CABLES, ETC) ARE SHOWN ON THE PLANS IF THEIR LOCATION HAS BEEN DETERMINED, BUT IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO AVOID DAMAGING THESE EXISTING STRUCTURES WHETHER OR NOT THEY ARE SHOWN ON THE PLANS. THE OWNER AND ENGINEER ASSUME NO RESPONSIBILITY FOR FAILURE TO THEM IN THEIR EXACT LOCATION. IF ANY STRUCTURE IS DAMAGED BY THE CONTRACTOR IT SHALL BE HIS RESPONSIBILITY TO REPAIR THE DAMAGE AT HIS OWN EXPENSE AND RESTORE THE STRUCTURE TO ITS

ORIGINAL CONDITION.

19. THE ORIGINAL PLANS FOR THIS PROJECT WERE PREPARED ON FULL SIZE STANDARD SHEETS (24-INCHES X 36-INCHES). THE SPECIFIC SCALE FOR THE INDIVIDUAL UNITS WOULD BE TRUE ONLY ON THE ORIGINAL TRACING. REPRODUCED COPIES, REDUCTIONS OR OTHER METHODS OF PRINTING MAY CHANGE OR ALTER THE SCALE. THE ENGINEER IS NOT RESPONSIBLE FOR SCALE DIMENSIONS UTILIZED BY OTHERS ON THESE

PLANS.

20. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO VERIFY LOCATIONS, ELEVATIONS AND DIMENSIONS OF ADJACENT AND/OR CONFLICTING UTILITIES IN ADVANCE OF CONSTRUCTION IN ORDER THAT ADJUSTMENTS CAN BE MADE TO PROVIDE ADEQUATE CLEARANCES, IF REQUIRED. THE CONTRACTOR SHALL PRESERVE AND PROTECT PUBLIC UTILITIES AT ALL TIMES DURING CONSTRUCTION. ANY DAMAGE TO UTILITIES RESULTING FROM THE CONTRACTOR'S OPERATIONS SHALL BE RESTORED AT HIS EXPENSE. THE ENGINEER SHALL BE

NOTIFIED WHEN PROPOSED FACILITY GRADES CONFLICT WITH EXISTING UTILITY GRADES.

21. ALL CONCEPTS, IDEAS, DESIGNS, ARRANGEMENTS, AND PLANS INDICATED OR REPRESENTED BY THESE INSTRUMENTS, AS OUTLINED ON THE TITLE SHEET INDEX, AND BY ANY ADDENDUM ARE OWNED BY AND ARE THE PROPERTY OF TRC ENGINEERS, INC, AND WERE CREATED AND DEVELOPED FOR THE USE ON AND IN CONNECTION WITH THE SPECIFIED PROJECT. THESE CONCEPTS, IDEAS, DESIGNS ARRANGEMENTS OR PLANS SHALL NOT BE USED BY ANY PERSON, FIRM OR CORPORATION FOR ANY PURPOSE WHATSOEVER WITHOUT

THE WRITTEN PERMISSION AND CONSENT OF TRC ENGINEERS, INC OF AUSTIN, TEXAS.

22. THE CONTRACTOR'S UNIT PRICE BID SHALL INCLUDE TOPOGRAPHICAL SURVEY OF THE COMPLETED BURIED PIPELINES PRIOR TO PLACEMENT OF BACKFILL, TO SHOW THE FINAL LOCATION OF ALL FITTINGS, VALVES, BENDS, TEES, VERTICAL BENDS, AND OTHER UNDERGROUND APPURTENANCES. SURVEY DATA SHALL UTILIZE BENCH MARKS PROVIDED BY THE ENGINEER AND BE IN THE TEXAS STATE PLANE, SOUTH CENTRAL ZONE (FOOT), NAD 83. SURVEYING SHALL BE DONE UNDER THE SUPERVISION OF A REGISTERED SURVEYOR (RPLS).

SURVEY DATA SHALL BE SUBMITTED TO THE ENGINEER AND OWNER TO RECORD THE AS-BUILTS LOCATION OF BURIED PIPELINES. THE BACKFILL SHALL NOT BE INSTALLED UNTIL VERIFICATION FROM THE ENGINEER IS

RECEIVED BY THE CONTRACTOR. THERE WILL BE NO SEPARATE PAY FOR THESE SERVICES.

B. GENERAL ENVIRONMENTAL NOTES

1. CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE LOCAL, STATE, AND FEDERAL REQUIREMENTS REGARDING

EXCESS AND WASTE MATERIAL, INCLUDING METHODS OF HANDLING AND DISPOSAL.

2. CONTRACTOR SHALL LOCATE MATERIAL STORAGE AREAS AWAY FROM STORMWATER CONVEYANCE SYSTEMS.

PROVIDE PROTECTED STORAGE AREAS FOR CHEMICALS, PAINTS, SOLVENTS, FERTILIZERS, AND OTHER

POTENTIALLY TOXIC MATERIALS.

3. FUEL STORAGE IS NOT ALLOWED ON THIS PROJECT.

4. THE CONTRACTOR SHALL ADVISE OWNER IMMEDIATELY, VERBALLY AND IN WRITING, OF ANY FUEL OR TOXIC MATERIALS SPILLS WITHIN THE PROJECT/CONSTRUCTION AREA AND THE ACTIONS TO BE TAKEN TO REMEDY

THE PROBLEM.

5. THE CONTRACTOR SHALL DISPOSE OF FUELS, HAZARDOUS MATERIALS, AND CONTAMINATED EXCAVATIONS IN

A LEGALLY APPROVED MANNER.

C. STORMWATER NOTES

1. THROUGHOUT THE CONSTRUCTION, AND AT THE COMPLETION OF CONSTRUCTION, THE CONTRACTOR SHALL

ASSURE THAT DRAINAGE OF STORMWATER RUNOFF IS NOT BLOCKED.

2. DURING CONSTRUCTION, THE STORM WATER RUNOFF FROM ALL DISTURBED AREAS TO BE FILTERED BY SILT FENCES AND/OR ROCK BERMS. THESE TEMPORARY EROSION AND SEDIMENTATION CONTROLS ARE TO REMAIN IN PLACE UNTIL THE DISTURBED AREAS ARE REVEGETATED AND THE AREAS HAVE BECOME PERMANENTLY STABILIZED. ALL TEMPORARY EROSION AND SEDIMENTATION CONTROLS TO BE INSPECTED PERIODICALLY FOR DAMAGE CAUSED BY CONSTRUCTION ACTIVITIES AND FOLLOWING EVERY RAINFALL.

DAMAGED OR OBSTRUCTED CONTROLS TO BE REPAIRED/REPLACED AS NECESSARY TO MAINTAIN THEIR

PROPER OPERATION.

3. CONTRACTOR SHALL ENSURE EXISTING DRAINAGE PATTERNS ARE MAINTAINED AS SHOWN.

4. ALL SPRING FLOW DISTURBED DURING CONSTRUCTION SHALL BE THE CONTRACTORS RESPONSIBILITY TO

RESOLVE AND HANDLE.

D. PAVING NOTES

1. ANY EXISTING PAVEMENT, CURBS, AND/OR SIDEWALK DAMAGED OR REMOVED BY THE CONTRACTOR ARE TO BE REPAIRED BY THE CONTRACTOR TO AT LEAST THE PREEXISTING CONDITION AT HIS EXPENSE BEFORE

ACCEPTANCE OF THE WORK.

E. EROSION/SEDIMENTATION NOTES & TREE PROTECTION NOTES

1. THE CONTRACTOR SHALL INSTALL AND MAINTAIN EROSION/SEDIMENTATION CONTROLS AND TREE/NATURAL AREA PROTECTIVE FENCING PRIOR TO ANY SITE PREPARATION WORK (CLEARING, GRUBBING, GRADING, OR EXCAVATION). CONTRACTOR TO REMOVE EROSION/SEDIMENTATION CONTROLS AT THE COMPLETION OF

PROJECT AND GRASS RESTORATION.

2. THE PLACEMENT OF EROSION/SEDIMENTATION CONTROLS TO BE IN ACCORDANCE WITH THE PROPOSED SITE GRADING PLAN. DEVIATIONS FROM THE PLAN MUST BE SUBMITTED TO AND APPROVED BY THE OWNER.

3. EROSION AND SEDIMENTATION CONTROLS TO BE INSTALLED OR MAINTAINED IN A MANNER WHICH DOES

NOT RESULT IN SOIL BUILDUP WITHIN TREE DRIPLINES.

4. TO AVOID SOIL COMPACTION, NO VEHICULAR TRAFFIC, PARKING, OR STORAGE OF EQUIPMENT OR MATERIALS

IS ALLOWED IN THE TREE DRIPLINE AREAS.

5. INTENTIONAL RELEASE OF VEHICLE OR EQUIPMENT FLUIDS ONTO THE GROUND IS NOT ALLOWED.

CONTAMINATED SOIL RESULTING FROM ACCIDENTAL SPILL TO BE REMOVED AND DISPOSED OF PROPERLY.

F. SITE SPECIFIC NOTES

1. PIPING SYSTEMS WILL NOT BE TAKEN OUT OF SERVICE WITHOUT PRIOR APPROVAL BY THE OWNER. THE CONTRACTOR SHALL GIVE THE OWNER A 14-DAY PRIOR NOTICE BEFORE ANY SYSTEM IS SCHEDULED TO BE

OUT OF SERVICE.

2. CONTRACTOR SHALL COORDINATE ALL WORK WITH OWNER PERSONNEL AND ENGINEER PRIOR TO

CONSTRUCTION.

3. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ANY NECESSARY PERMITS PRIOR TO CONSTRUCTION.

4. CONTRACTOR SHALL VERIFY LOCATION OF EXISTING BUILDINGS, UTILITIES, AND OTHER STRUCTURES PRIOR TO CONSTRUCTION. IF ANY ADJUSTMENTS TO THESE PLANS WILL BE REQUIRED TO COMPLETE THIS WORK

CONTRACTOR WILL NOTIFY OWNER AND ENGINEER IMMEDIATELY FOR GUIDANCE.

5. EXISTING PIPING LAYOUT IS PROVIDED FOR CONTRACTOR'S INFORMATION ONLY. TRC OR OWNER DOES NOT WARRANT ITEMS SHOWN ARE PRESENT OR OPERATIONAL, OR THAT ALL PIPING, EQUIPMENT, ETC, ARE SHOWN. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO CONFIRM IN THE FIELD PRIOR TO

CONSTRUCTION.

6. CONTRACTOR SHALL PROTECT ALL STRUCTURES TO REMAIN THROUGHOUT CONSTRUCTION.

7. FOLLOWING CONSTRUCTION CONTRACTOR SHALL REGRADE ANY DISTURBED AREAS BACK TO THEIR PREVIOUS ELEVATIONS UNLESS OTHERWISE NOTED. ALL DISTURBED AREAS SHALL BE RESEEDED ACCORDING TO THE

SPECIFICATIONS PRIOR TO FINAL ACCEPTANCE.

8. MATERIAL STORED IN CONTRACTOR LAY-DOWN AREA SHALL BE NEAT AND NOT DISRUPT PLANT OPERATION

OR CONSTRUCTION ACTIVITIES.

9. ALL NEW PIPING, MODIFIED PIPING, FITTINGS, VALVES, ETC, SHALL BE CLEANED AND COATED PER THE

SPECIFICATIONS.

10. THE CONTRACTOR SHALL CONFIRM ALL DIMENSIONS PRIOR TO CONSTRUCTION.

11. INTERRUPTION OF WATER FLOWS THROUGH EXISTING FACILITIES IS NOT PERMITTED WITHOUT PRIOR WRITTEN APPROVAL. SUBMIT TO ENGINEER CONSTRUCTION PLAN WHICH DETAILS SCHEDULE AND TECHNIQUES TO BE USED FOR REVIEW PRIOR TO ANY CONNECTIONS TO EXISTING PIPES OR STRUCTURES.

PARTIAL INTERRUPTION OF FLOWS IS TO BE SCHEDULED DURING LOW FLOW PERIODS FOR AS SHORT A DURATION AS PRACTICAL. MAKE PROVISIONS FOR ACCOMMODATING PEAK FLOWS WHICH MAY OCCUR DURING CONSTRUCTION OPERATIONS. ENGINEER AND OWNER SUPERINTENDENT TO BE NOTIFIED WHEN

ANY INTERRUPTIONS ARE TO BE MADE.

12. CONTRACTOR AGREES TO ASSUME SOLE AND COMPLETE RESPONSIBILITY FOR JOB SITE CONDITIONS DURING THE CONSTRUCTION OF THE PROJECT, INCLUDING SAFETY OF ALL PERSONS AND PROPERTY. THIS REQUIREMENT SHALL APPLY CONTINUOUSLY AND NOT BE LIMITED TO NORMAL WORKING HOURS. THE CONTRACTOR SHALL DEFEND, INDEMNIFY AND HOLD THE OWNERS AND ENGINEER AND HIS EMPLOYEES, PARTNERS, OFFICERS, DIRECTORS, OR CONSULTANTS HARMLESS FROM ANY AND ALL LIABILITY, REAL OR ALLEGED, IN CONNECTION WITH PERFORMANCE OF THE WORK ON THIS PROJECT, EXCEPTING FROM LIABILITY ARISING FROM SOLE NEGLIGENCE OF THE OWNER OR ENGINEER, ENGINEER'S DIRECTORS, OFFICERS, EMPLOYEES, OR CONSULTANTS.

13. CONTRACTOR TO CONTACT THE ENGINEER FOR ANY FIELD CHANGES. ANY REVISIONS OR CHANGES TO THE APPROVED CONSTRUCTION PLANS WILL REQUIRE ADDITIONAL APPROVAL BY THE OWNER IN WRITING.

14. OSHA REGULATIONS PROHIBIT OPERATIONS THAT WILL BRING PERSONS EQUIPMENT WITHIN 10 FEET OF AN ENERGIZED LINE. WHERE WORKMEN AND/OR EQUIPMENT HAVE TO WORK CLOSE TO AN ENERGIZED ELECTRICAL LINE, THE CONTRACTOR SHALL NOTIFY THE ELECTRICAL POWER COMPANY INVOLVED AND MAKE WHATEVER ADJUSTMENTS NECESSARY TO ENSURE THE SAFETY OF THOSE WORKMEN. NO SEPARATE PAY.

15. DUE TO FEDERAL REGULATIONS TITLE 49, PART 192 (8), GAS COMPANIES MUST MAINTAIN ACCESS TO GAS VALVES AT ALL TIMES. THE CONTRACTOR MUST PROTECT AND WORK AROUND ANY GAS VALVES THAT ARE IN

THE PROJECT AREA.

16. CONTRACTOR SHALL USE CAUTION AND MINIMIZE LANDSCAPE DISTURBANCE THROUGHOUT THE PROJECT

LIMITS. LANDSCAPE SHALL BE RETURNED TO ITS ORIGINAL CONDITION. NO SEPARATE PAY.

17. CONTRACTOR SHALL CONFIRM LOCATION AND ORIENTATION OF PROPOSED VALVES W/ OWNER/ENGINEER

PRIOR TO INSTALLATION.

18. COORDINATES SHOWN ON THESE PLANS ARE IN TEXAS STATE PLANE COORDINATE SYSTEM, NAD 83 (93), SOUTH CENTRAL ZONE.

19. CONTRACTOR SHALL PROVIDE PRECONSTRUCTION VIDEO/PHOTOS PRIOR TO CONSTRUCTION. REFERENCE THE

SPECIFICATIONS FOR DETAILS.

20. THERE SHALL BE AN ASSIGNED 24-HOUR COMPETENT PERSON ON CALL FOR THE OCCURRENCE OF RAIN

EVENTS AND THROUGHOUT THE DURATION OF THE PROJECT.

G. SANITARY FACILITIES

1. THE CONTRACTOR SHALL PROVIDE SUFFICIENT CHEMICAL TOILET FACILITIES FOR THE USE OF HIS FORCES.

ADEQUACY OF THESE FACILITIES WILL BE SUBJECT TO THE APPROVAL OF THE ENGINEER & MAINTENANCE OF SAME MUST BE SATISFACTORY TO THE ENGINEER AT ALL TIMES. CONTRACTOR SHALL PROVIDE A

MAINTENANCE SCHEDULE TO THE OWNER FOR APPROVAL.

H. GENERAL PIPING NOTES

1. THE CONTRACTOR SHALL PROVIDE FITTINGS, PLUGS, AND OTHER DEVICES FOR USE IN FILLING, FLUSHING, TESTING, ETC. NO SEPARATE PAY.

2. THE CONTRACTOR SHALL NOT EXCEED MANUFACTURER'S RECOMMENDATION FOR CURVATURE OF LINES

AND/OR DEFLECTION OF PIPE JOINTS. INSTALL JOINTS AS REQUIRED.

3. DI-ELECTRIC CONNECTIONS TO BE PREVENTED BY USE OF NON-CONDUCTIVE GASKETS BETWEEN DISSIMILAR

PIPING MATERIALS.

4. PRESSURE RATING OF VALVES, FITTINGS, AND APPURTENANCES SHALL BE EQUAL TO OR EXCEED PRESSURE

RATING OF ADJACENT PIPELINE.

5. ALL FITTINGS SHALL BE FLANGED.

I. FILTER REHABILITATION REQUIREMENTS

1. FILTER 12” INLET MODULATING VALVE (VAL-8-17, VAL-10-17, VAL-12-17) REPLACEMENT CAUSES THE 30” INFLUENT MANIFOLD TO BE OUT OF SERVICE AND SIX (6) FILTERS TO BE OUT OF SERVICE. THIS VALVE

REPLACEMENT SHALL BE DONE IN 6 HOURS, MAXIMUM.

2. FILTER 8” INLET VALVE (VAL-8-1, VAL-8-2, VAL-8-3, VAL-10-1, VAL-10-2, VAL-10-3, VAL-12-1, VAL-12-2, VAL-12-3) REPLACEMENT (3 PER FILTER) CAUSES THE 12” INFLUENT HEADER (FOR EACH INDIVIDUAL FILTER) TO BE OUT OF SERVICE AND ONE (1) FILTER TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT SHALL BE

DONE IN 12 HOURS.

3. FILTER 12” BACKWASH WASTE VALVE (VAL-8-4, VAL-8-5, VAL-8-6, VAL-10-4, VAL-10-5, VAL-10-6, VAL-12-4, VAL-12-5, VAL-12-6) REPLACEMENT CAUSES BACKWASH HEADER TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT SHALL BE DONE IN 12 HOURS FOR ALL THREE

VALVES.

4. FILTER 8” BACKWASH SUPPLY VALVE (VAL-8-16, VAL-10-16, VAL-12-16) REPLACEMENT CAUSES BACKWASH HEADER TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT

SHALL BE DONE IN 6 HOURS.

5. MAIN FILTER 12” EFFLUENT VALVE (VAL-8-15, VAL-10-15, VAL-12-15) REPLACEMENT CAUSES EFFLUENT MANIFOLD TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT

SHALL BE DONE IN 6 HOURS.

6. AIR RELEASE VALVE (VAL-8-11, VAL-8-12, VAL-8-13, VAL-8-14, VAL-10-11, VAL-10-12, VAL-10-13, VAL-10-14, VAL-12-11, VAL-12-12, VAL-12-13, VAL-12-14) REPLACEMENT CAUSES AIR RELEASE MANIFOLD TO BE OUT OF SERVICE AND ONE (1) FILTER TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT SHALL BE DONE IN 6 HOURS.

7. FILTER 4” AIR SUPPLY VALVE (VAL-8-8, VAL-8-9, VAL-8-10, VAL-10-8, VAL-10-9, VAL-10-10, VAL-12-8, VAL-12-9, VAL-12-10) REPLACEMENT CAUSE AIR SUPPLY HEADER TO BE OUT OF SERVICE AND ONE (1) FILTER TO BE OUT

OF SERVICE. THIS VALVE REPLACEMENT SHALL BE DONE IN 6 HOURS.

8. MAIN FILTER 4” AIR SUPPLY VALVE (VAL-8-7, VAL-10-7, VAL-12-7) REPLACEMENT CAUSES AIR SUPPLY MANIFOLD TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT

SHALL BE DONE IN 4 HOURS.

9. 8" RINSE EFFLUENT VALVE (VAL-300) REPLACEMENT CAUSES EFFLUENT MANIFOLD AND BACKWASH HEADERS TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT SHALL BE

DONE IN 4 HOURS.

10. 8" SIMULWASH RATE-SET VALVE (VAL-200) REPLACEMENT CAUSES EFFLUENT MANIFOLD AND BACKWASH HEADERS TO BE OUT OF SERVICE AND THREE (3) FILTERS TO BE OUT OF SERVICE. THIS VALVE REPLACEMENT

SHALL BE DONE IN 4 HOURS.

11. FILTER INTERIOR REPAINTING, MEDIA REPLACEMENT, BROKEN UNDERDRAIN NOZZLES, THROUGH PIPING REPLACEMENT, AND PVC HEADER/LATERAL AIR WASH SYSTEM REPLACEMENT CAUSES ONE (1) FILTER TO BE

OUT OF SERVICE.

12. FOR FILTERS 8, 10 AND 12, ONLY ONE FILTER SHALL BE OUT OF SERVICE AT ANY GIVEN TIME.

13. VALVE REPLACEMENT SHALL BE SCHEDULED THROUGH OWNER AND DONE TO MINIMIZE FILTER DOWN TIME.

14. COMPLETED FILTERS SHALL BE PRESSURE TESTED PER THE REQUIREMENTS OF TONKA WATER.

15. CONTRACTOR SHALL VERIFY EXISTING VALVE SIZE AND TYPE PRIOR TO ORDERING NEW VALVE.

ABBREVIATIONS

ALT ALTERNATE

APPROX APPROXIMATE

ASTM AMERICAN SOCIETY OF TESTING AND MATERIALS

AVE AVERAGE

AWS ALTERNATE WATER SUPPLY

CONC CONCRETE

CS CARBON STEEL

CI CAST IRON

℄ CENTER LINE

DI DUCTILE IRON

DIA, Ø DIAMETER

EL ELEVATION

ELEC ELECTRICAL

EX EXISTING

EXP EXPANSION

FJ, FLG'D FLANGED

, FL FLOW LINE

FNPT FEMALE NATIONAL PIPE THREAD TAPER

FRP FIBERGLASS REINFORCED PLASTIC

FT, ' FOOT, FEET

HDG HOT DIP GALVANIZED

HP HORSEPOWER

ID INNER DIAMETER

LB POUNDS

LAS LIQUID AMMONIUM SULFATE

LF LINEAR FOOT, LINEAR FEET

MAX MAXIMUM

MIN MINIMUM

MISC MISCELLANEOUS

MJ MECHANICAL JOINT

NO NUMBER

NTS NOT TO SCALE

NG EXISTING GROUND

OC ON CENTER

OCEW ON CENTER EACH WAY

OD OUTER DIAMETER

ODT OUTER DRAFT TUBE

PE PLAIN END

PO PUSH ON

PLT PLATE

PSI POUNDS PER SQ INCH

PROP PROPOSED

PVC POLYVINYL CHLORIDE

R, RAD RADIUS

RCP REINFORCED CONCRETE PIPE

REF REFER(ENCE)

REINF REINFORCED

SCH SCHEDULE

SQ SQ

SS STAINLESS STEEL

TOS TOP OF SLAB

TOW TOP OF WALL

TYP TYPICAL

VFD VARIABLE FREQUENCY DRIVE

CHAIN LINK FENCE

EXISTING FIRE HYDRANT

CURB INLET

GRATE INLET

POWER POLE

SHRUB

HIGHWAY SIGN

WATER VALVE

TELEPHONE PEDESTAL

POWER POLE W/GUY WIRE

EDGE OF ASPHALT

PROPERTY LINE

TREE

WOOD FENCE

MAILBOX

STORM SEWER MANHOLE

WASTE WATER MANHOLE

WATER/GAS METER

CONCRETE MONUMENT

PROPERTY CORNER

TELEPHONE CABLE

BARB WIRE FENCE

SANITARY SEWER

WATER LINE

GAS LINE GAS

TEL

LEGEND

CONTROL POINT

HANDICAP SIGNAL

SPIGOT

PUMP

SEWER VENT

SEWER CLEAN OUT

TELEPHONE MANHOLE

PROPOSED FIRE HYDRANT

OVERHEAD ELECTRICOE

SD STORM DRAIN

FIBER OPTICS LINE

FILTER VALVE LEGEND

VAL - 5-10

FILTER NUMBER VALVE NUMBER

N B

O N

N O

N U

JUNE 2024

W W

G-

\2 G

O N

N N

S 1.

- 6 /2

U N

E, S

. 2

A U

, T X

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E N

S, IN

AutoCAD SHX Text SCHERTZ-SEGUIN LGC GONZALES WATER TREATMENT PLANT 2024 PRESSURE FILTER REHABILITATION GENERAL CONSTRUCTION NOTES

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, FL FLOW LINE WSE WATER SURFACE ELEVATIONWATER SURFACE ELEVATION

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COUNTY ROAD 127

(GRAVEL)

SCHERTZ SEGUIN WATER

TREATMENT PLANT

WILD MEADOW

(ASPHALT)

EXIST CHAIN LINK FENCEENTRANCE GATE

BACKWASH

TANK

BACKWASH

CLARIFIER

CLEARWELL

GRAVITY

FILTER

BUILDINGPUMP

BUILDING

GROUND

STORAGE

TANK

GROUND

STORAGE

TANK

PRESSURE

FILTER

BUILDING

CHLORINE

STORAGE

CHEMICAL

BULDING

PROJECT LOCATION

N B

O N

N O

N U

JUNE 2024

W W

G-

W G

- 6 /2

U N

E, S

. 2

A U

, T X

F -8

) 4

E N

S, IN

AutoCAD SHX Text

SCALE : 1" = 50'

AutoCAD SHX Text

SHEET

SCHERTZ-SEGUIN LGC GONZALES WATER TREATMENT PLANT 2024 PRESSURE FILTER REHABILITATION SITE PLAN

EXIST WASTE SUMP

17'-9"

19'-10"

16'-4"

18'-5"

15'-111 2"

17'-6"

8'-51 2"

8'-41 2"

122'-71 2"

FILTER 2 FILTER 1

FILTER 4 FILTER 3

FILTER 6 FILTER 5

FILTER 8 FILTER 7

FILTER 10 FILTER 9

FILTER 12 FILTER 11

14'-2"

5'-6"

3'-21 2"

42'-0"7'-0" 42'-0"26'-0" 7'-0"

EXIST FILTER ROOM PLAN

SCALE: 1/8" = 1'-0"

1/ 8"

'-0

EXIST 36" DOOR (TYP)

EXIST 14'-0" X 14'-0"

ROLL UP DOOR

EXIST 14'-0" X 14'-0"

ROLL UP DOOR

EXIST 8'-0" X 10'-0"

ROLL UP DOOR

EXIST 8'-0" X 10'-0"

ROLL UP DOOR

EXIST BLOWERS

CONC PAD

EXIST AIR COMPRESSOR

CONC PAD

EXIST 8'-0" X 10'-0" ROLL UP DOOR

EXIST 42" EFFLUENT

EXIST 30" STEEL INFLUENT MANIFOLD

EXIST 24" FILTER EFFLUENT HEADER

EXIST AIR COMPRESSOR

25'-5"

10'-0"

22'-3"

10'-0"

38'-11 2"

14'-0"

2'-10"

1'-31 2"

STEEL PIPE

SUPPORT (TYP)

EXIST 8'-0" X 10'-0"

ROLL UP DOOR

VAL - 700

VAL - 500

VAL - 600

NOTES:

1. CONTRACTOR SHALL OBTAIN ALL FILTER EQUIPMENT AND MEDIA

FROM FILTER MANUFACTURER (TONKA WATER).

2. CONTRACTOR SHALL COORDINATE ALL WORK WITH OWNER AND

ENGINEER PRIOR TO CONSTRUCTION. CONTRACTOR SHALL SEQUENCE

CONSTRUCTION ACTIVITIES. CONTRACTOR SHALL GIVE THE OWNER A

14-DAY NOTICE BEFORE ANY FILTER IS SCHEDULED TO BE OUT OF

SERVICE. ONLY ONE (1) FILTER SHALL BE OUT OF SERVICE AT ANY GIVEN

TIME.

3. CONTRACTOR SHALL COORDINATE AN ON-SITE LAYDOWN AREA WITH

OWNER. MATERIAL STORED IN THE CONTRACTOR LAYDOWN AREA

SHALL BE NEAT AND NOT DISRUPT PLANT OPERATIONS. PROVIDE

TEMPORARY EROSION CONTROL AND SEDIMENTATION CONTROLS AS

REQUIRED.

4. ALL PIPING, FITTINGS, VALVES, ETC. SHALL BE COATED PER THE

PROTECTIVE COATINGS SECTION IN THE SPECIFICATIONS.

5. REFER TO ELECTRICAL DRAWINGS FOR ELECTRICAL AND

INSTRUMENTATION IMPROVEMENTS.

6. ANY ITEMS DAMAGED BY CONTRACTOR SHALL BE REPLACED IN KIND,

AND APPROVED BY THE ENGINEER.

7. ALL DIMENSIONS SHALL BE FIELD CONFIRMED BY THE CONTRACTOR.

8. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL DISINFECTION AND

TESTING PER TCEQ REQUIREMENTS.

9. ALL NEW BUTTERFLY VALVES SHALL BE WAFER STYLE, EXCEPT THE 12"

INFLUENT MODULATING VALVE AND THE 4" AIRWASH INFLUENT

HANDWHEEL OPERATED VALVE. THOSE VALVES SHALL BE BUTTERFLY

DOUBLE FLANGE VALVES.

WORK SUMMARY

FILTER NO. WORK DESCRIPTION

REPLACE ALL FILTER VALVES, MOTORIZED AND MANUAL (13 BUTTERFLY VALVES

TOTAL); REPLACE FILTER MEDIA; REPLACE FOUR (4) AIR RELEASE VALVES; REPLACE

EIGHT (8) MANWAY GASKETS; BLAST/PAINT FILTER INTERIOR; REMOVE EXTERIOR

STAINS; REPLACE BROKEN UNDERDRAIN NOZZLES; REPLACE TROUGH PIPING INSIDE

THE FILTER FOR ALL THREE (3) CELLS AND WELD AROUND PIPE WHERE PIPE INTERSECTS

CELL WALLS; REPLACE STAINLESS STEEL BOLTS AT TROUGH; REPLACE PVC

HEADER/LATERAL AIR WASH SYSTEM INSIDE THE FILTER FOR ALL THREE (3) CELLS.

REPLACE SOLENOID BANKS WITH NEW CONNECTOR AND WIRES AT SOLENOID FILTER

PANEL, REPLACE AIR HOSES, LABEL AIR HOSES AT VALVES AND SOLENOID FILTER PANEL.

REPLACE ALL FILTER VALVES, MOTORIZED AND MANUAL (13 BUTTERFLY VALVES

TOTAL); REPLACE FOUR (4) AIR RELEASE VALVES; REPLACE EIGHT (8) MANWAY

GASKETS. REPLACE SOLENOID BANKS WITH NEW CONNECTOR AND WIRES AT

SOLENOID FILTER PANEL, REPLACE AIR HOSES, LABEL AIR HOSES AT VALVES AND

SOLENOID FILTER PANEL.

REPLACE ALL FILTER VALVES, MOTORIZED AND MANUAL (13 BUTTERFLY VALVES

TOTAL); REPLACE FOUR (4) AIR RELEASE VALVES; REPLACE EIGHT (8) MANWAY

GASKETS. REPLACE SOLENOID BANKS WITH NEW CONNECTOR AND WIRES AT

SOLENOID FILTER PANEL, REPLACE AIR HOSES, LABEL AIR HOSES AT VALVES AND

SOLENOID FILTER PANEL.

FILTER REHAB

WORK AREA

N B

O N

N O

N U

JUNE 2024

W W

G-

M .D

W G

- 6 /2

U N

E, S

. 2

A U

, T X

F -8

) 4

E N

S, IN

EXIST CONTROL PANELSEXIST CONTROL PANELS

- REPLACE BUTTERFLY VALVE VAL-200

- REPLACE BUTTERFLY VALVE VAL-300

EXIST FILTER 8, 10, AND

12 SOLENOID PANEL

REMOVE AND REPLACE 12" FLOW METER FOR FILTER #5.

SEE ADDITIVE ALTERNATE BID ITEM P.A.4.

REMOVE AND REPLACE END CAPS ON ACTUATOR.

INSTALL EXTENDED TRAVEL STOPS TO BE ABLE TO

ADJUST VALVE. SEE ADDITIVE ALTERNATE BID ITEM P.A.6.

VAL-800

AutoCAD SHX Text

AutoCAD SHX Text SCHERTZ-SEGUIN LGC GONZALES WATER TREATMENT PLANT 2024 PRESSURE FILTER REHABILITATION FILTER ROOM PLAN VIEW

EXIST 24" FILTER

EFFLUENT HEADER

EXIST 8"

BACKWASH

HEADER

EXIST 12"

FLOW METER

EXIST 12" DIP

INFLUENT HEADER

EXIST 30" STEEL

INFLUENT

MANIFOLD

EXIST 2" AIR RELIEF VALVE

(4 PER FILTER) (TYP)

EXIST 2" AIR RELIEF VALVE

DRAIN DOWN SPOUT

EXIST 30" PRESSURE

AERATOR

EXIST 30" INFLUENT LINE EXIST 9'-0" X 36'-0" - 6"

CONC EQUIPMENT PAD

FILTER 8

FILTER 7

EXIST 4" AIR

SUPPLY LINE

(TYP)

B 4 3/16" = 1'-0"

SECTION

A 4 3/16" = 1'-0"

SECTION

EXIST 30" PRESSURE

AERATOR

EXIST 30" INFLUENT LINE

EXIST 9'-0" X 36'-0" - 6"

CONC EQUIPMENT PAD

VAL - 8-15

VAL - 8-16

VAL - 8-11

VAL - 8-10

VAL - 8-17

EXIST PIPE

SUPPORT (TYP)

EXIST 24" FILTER

EFFLUENT HEADER

EXIST 8"

BACKWASH

HEADER

EXIST 12"

FLOW METER

EXIST 12" DIP

INFLUENT HEADER

EXIST 30" STEEL

INFLUENT MANIFOLD

FILTER 9

EXIST 4" AIR

SUPPLY LINE

(TYP)

EXIST PIPE

SUPPORT (TYP)

FILTER 10

VAL - 10-8 VAL - 10-9 VAL - 10-10

VAL - 10-15

VAL - 10-16

VAL - 10-11VAL - 10-12VAL - 10-13

VAL - 10-7

VAL - 10-14

REMOVE AND REPLACE ALL VALVES ASSOCIATED

WITH FILTER 8. REFERENCE VALVE REPLACEMENT

SCHEDULE ON SHEET 7.

12" FILTER

EFFLUENT

12" FILTER

EFFLUENT

REMOVE AND REPLACE

MANWAY GASKET (TYP 8)

VAL - 10-17

REMOVE AND REPLACE ALL VALVES ASSOCIATED

WITH FILTER 10. REFERENCE VALVE

REPLACEMENT SCHEDULE ON SHEET 7.

REMOVE AND REPLACE

MANWAY GASKET (TYP 8)

NOTES:

1. CONTRACTOR SHALL OBTAIN ALL FILTER EQUIPMENT AND MEDIA

FROM FILTER MANUFACTURER (TONKA WATER).

2. CONTRACTOR SHALL COORDINATE ALL WORK WITH OWNER AND

ENGINEER PRIOR TO CONSTRUCTION. CONTRACTOR SHALL SEQUENCE

CONSTRUCTION ACTIVITIES. CONTRACTOR SHALL GIVE THE OWNER A

14-DAY NOTICE BEFORE ANY FILTER IS SCHEDULED TO BE OUT OF

SERVICE. ONLY ONE (1) FILTER SHALL BE OUT OF SERVICE AT ANY GIVEN

TIME.

3. CONTRACTOR SHALL COORDINATE AN ON-SITE LAYDOWN AREA WITH

OWNER. MATERIAL STORED IN THE CONTRACTOR LAYDOWN AREA

SHALL BE NEAT AND NOT DISRUPT PLANT OPERATIONS. PROVIDE

TEMPORARY EROSION CONTROL AND SEDIMENTATION CONTROLS AS

REQUIRED.

4. ALL PIPING, FITTINGS, VALVES, ETC. SHALL BE COATED PER THE

PROTECTIVE COATINGS SECTION IN THE SPECIFICATIONS.

5. REFER TO ELECTRICAL DRAWINGS FOR ELECTRICAL AND

INSTRUMENTATION IMPROVEMENTS.

6. ANY ITEMS DAMAGED BY CONTRACTOR SHALL BE REPLACED IN KIND,

AND APPROVED BY THE ENGINEER.

7. ALL DIMENSIONS SHALL BE FIELD CONFIRMED BY THE CONTRACTOR.

8. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL DISINFECTION AND

TESTING PER TCEQ REQUIREMENTS.

9. ALL NEW BUTTERFLY VALVES SHALL BE WAFER STYLE, EXCEPT THE 12"

INFLUENT MODULATING VALVE AND THE 4" AIRWASH INFLUENT

HANDWHEEL OPERATED VALVE. THOSE VALVES SHALL BE BUTTERFLY

DOUBLE FLANGE VALVES.

N B

O N

N O

N U

JUNE 2024

W W

G-

M .D

W G

- 6 /2

U N

E, S

. 2

A U

, T X

F -8

) 4

E N

S, IN

VAL - 8-14

VAL - 8-9VAL - 8-8

VAL - 8-7

VAL - 8-12

VAL - 8-13

REPLACE TROUGH PIPING INSIDE THE FILTER FOR

ALL THREE (3) CELLS AND WELD AROUND PIPE

WHERE PIPE INTERSECTS CELL WALLS. REPLACE

STAINLESS STEEL BOLTS AT TROUGH

REPLACE PVC HEADER/LATERAL

AIR WASH SYSTEM INSIDE THE

FILTER FOR ALL THREE (3) CELLS

ABRASIVE BLAST, SPOT REPAIR,

AND PAINT THE ENTIRE INTERIOR

OF THE FILTER TANK

REMOVE AND REPLACE

FILTER MEDIA REFERENCE

DETAIL ON SHEET 6. REMOVE AND REPLACE ALL

UNDER DRAIN NOZZLE