15-03. Attachment B - AMA Osage WTP Phase 2 Plans - Sealed.pdf
PDF 8 MB Posted
- Solicitation number
- BVB 415-26 SEC
- Issued by
- Nueces County, Texas
About this file
This document comprises sealed bid plans and specifications for the City of Amarillo's Osage Water Treatment Plant (WTP) Settling Basin Repairs Phase 2 - West Basin project located in Amarillo, Texas. The project involves comprehensive rehabilitation of the west sedimentation basin, including removal and replacement of existing grout under clarifier mechanisms (approximately 24,540 square feet), repair of expansion joints, installation of waterproofing coatings on interior walls and structures, removal and reinstallation of stainless steel track, replacement of scraper blades with new 3/8" HDPE blades, concrete crack repairs, and structural repairs to concrete surfaces. The contract specifies a start date between October 1 and October 15 with a completion timeline of 140 calendar days for final completion with no allowances for weather delays or holidays. A non-mandatory pre-bid meeting is scheduled at the Osage Water Treatment Plant Ozone Building Meeting Room. The project documents include general notes, site plans, basin section details, and photographic reference materials prepared by KSA engineering firm under TBPE registration number F-1356.
The project requires contractors to maintain water treatment plant operations throughout construction, coordinate all work with the engineer and plant manager, and provide temporary piping and electrical systems to sustain plant functionality. Contractors must obtain utility locating services through Texas One Call with a minimum 48-hour advance notice before excavation and are responsible for all costs related to disposal of excess materials at approved locations. Construction activities are limited to 7 a.m. to 7 p.m. Monday through Saturday, with Sunday work permitted only with prior approval from the plant manager. The contractor must submit an affidavit-of-bills-paid document before final payment is released and maintain strict dust control measures and site cleanliness throughout the project duration. Bid alternates are included for concrete walkway and handrail structural repairs, with specifications addressing surface preparation, waterproofing admixtures, epoxy bonding agents, and coating systems for all interior basin surfaces.
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2024 Maxar ©CNES (2024) Distribution Airbus DS © 2024 TomTom
PAMPA
BORGER
DUMAS
AMARILLO
HEREFORD
PLAINVIEW
CANYON
TULIA
CLARENDON
LOCATION MAP
CITY OF AMARILLO
OSAGE WTP
SETTLING BASIN REPAIRS
PHASE 2 - WEST BASIN
BID NO. BVB _______
\\ksa.net\gateway\Projects\102973\008 CAD\30 Sheets\02 Civil\PHASE 2\102973-C-COVER-0001.dwg : COVER
PROJECT
LOCATION
VICINITY MAP
PROJECT
LOCATION
RECOMMENDED BY:
KSA TBPE FIRM REGISTRATION No. F-1356
CLAYTON A. SCALES 6/19/2026
VICE PRESIDENT
600 S. Tyler St., Suite 1625 Amarillo, TX 79101 T. 806-335-1600 www.ksaeng.com a Pape-Dawson company
415-26 SEC
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GENERAL NOTES
1. PRIOR TO SUBMISSION OF THE PROPOSAL, THE CONTRACTOR SHALL HAVE MADE A CAREFUL
EXAMINATION OF THE WORK SITE, THE CONTRACT DOCUMENTS, AND ALL MATTERS THAT MAY
AFFECT THE COST AND TIME FOR THE COMPLETION OF THE WORK INVOLVED.
2. THE INFORMATION SHOWN ON THIS DRAWING CONCERNING TYPE AND LOCATION OF
UNDERGROUND UTILITIES IS NOT GUARANTEED TO BE ACCURATE OR ALL INCLUSIVE. THE
CONTRACTOR IS RESPONSIBLE FOR MAKING HIS OWN DETERMINATIONS AS TO TYPE AND
LOCATION OF UNDERGROUND PIPELINES, CONDUITS AND STRUCTURES BY CONTACTING
OWNERS OF UNDERGROUND UTILITIES AND BY PROSPECTING IN ADVANCE OF EXCAVATION
OPERATIONS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING TEXAS ONE CALL A
MINIMUM OF 48 HOURS PRIOR TO ANY EXCAVATION.
3. CONTRACTOR IS RESPONSIBLE FOR ALL COST INVOLVED IN DISPOSING OF EXCESS
MATERIALS. THE LOCATION FOR THE DISPOSAL OF CONSTRUCTION MATERIAL SHALL BE
APPROVED BY THE OWNER PRIOR TO THE START OF CONSTRUCTION.
4. ALL PHASES OF CONSTRUCTION MUST BE COORDINATED WITH THE ENGINEER AND PLANT
MANAGER. FIELD ADJUSTMENTS MAY BE NECESSARY AND WILL BE CARRIED OUT AS DIRECTED
BY THE ENGINEER AT NO EXTRA PAY.
5. THE CONTRACTOR SHALL VERIFY, LOCATE AND PROTECT EXISTING WATER, SANITARY SEWER, FIBER, STORM SEWER, GAS, ELECTRIC AND TELEPHONE MAINS AND SERVICES AND RESTORE
SERVICE IN CASE OF ANY DAMAGE AT NO EXTRA PAY.
6. THE CONTRACTOR SHALL NOTIFY THE OWNER AT LEAST 24 HOURS PRIOR TO ANY REQUIRED
TESTING. THE CONTRACTOR SHALL COORDINATE ALL TESTING ACTIVITIES WITH THE CITY AND
THE TESTING FIRM.
7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIRING ANY DAMAGE CAUSED BY THE
CONTRACTOR OUTSIDE OF THE DESIGNATED WORK AREA WITH EQUAL OR BETTER QUALITY
MATERIAL AT THE CONTRACTOR'S EXPENSE.
8. THE CONTRACTOR SHALL TAKE ALL AVAILABLE PRECAUTIONS TO CONTROL DUST.
CONTRACTOR SHALL CONTROL DUST BY SPRINKLING WATER OR AS APPROVED BY THE
OWNER AND ENGINEER.
9. THE CONTRACTOR SHALL VERIFY AND COORDINATE ALL DIMENSIONS SHOWN, INCLUDING THE
HORIZONTAL AND VERTICAL LOCATION OF ALL UTILITIES.
10. PRE-CONSTRUCTION MEETING: SUBSEQUENT TO THE COMPLETION OF THE CONTRACT
DOCUMENTS AND AWARD OF THE CONTRACT, A PRE-CONSTRUCTION MEETING SHALL BE HELD
AT A DATE AND TIME SET BY THE ENGINEER. THE CONTRACTOR SHALL HAVE THE PROJECT
SUPERINTENDENT AND ANYONE ELSE HE DEEMS NECESSARY TO BE IN ATTENDANCE AT THIS
MEETING. THE PURPOSE OF THE MEETING SHALL BE TO DISCUSS THE PROJECT AND RESOLVE
ANY INITIAL PROBLEMS. THE NOTICE TO PROCEED LETTER SHALL BE GIVEN AT THIS MEETING.
ACCESS AND TRAFFIC CONTROL WILL ALSO BE DISCUSSED.
11. PRE-BID MEETING: THERE SHALL BE A NON-MANDATORY PRE-BID MEETING HELD AT THE
OSAGE WATER TREATMENT PLANT OZONE BUILDING MEETING ROOM AT THE DATE AND TIME
STATED IN THE CONTRACT DOCUMENTS.
12. CONTRACTOR SHALL KEEP A SET OF PLANS ON THE SITE AT ALL TIMES. PARTIAL PLAN SETS ARE NOT TO BE KEPT ON THE JOB SITE. PLANS SHALL BE SEALED, SIGNED, AND DATED BY A
PROFESSIONAL ENGINEER.
13. IF ANY DISCREPANCIES EXIST BETWEEN THESE GENERAL NOTES AND THE CONTRACT
SPECIFICATIONS, CONTRACTOR SHALL NOTIFY THE ENGINEER FOR CLARIFICATION.
14. DATE OF COMPLETION: THE START DATE WILL BE BETWEEN OCTOBER 1 AND OCTOBER 15.
CONTRACT TIME WILL INCLUDE 140 CALENDAR DAYS FOR FINAL COMPLETION. THERE SHALL BE
NO SUBSTANTIAL COMPLETION, WEATHER, HOLIDAY, OR NON-WORKING DAYS CONSIDERED.
15. FINAL PAYMENT OF BILLS: PRIOR TO THE RELEASE OF THE FINAL PAYMENT ON THE PROJECT, THE CONTRACTOR SHALL BE REQUIRED TO SUBMIT AN AFFIDAVIT-OF-BILLS PAID FOR THE
PROJECT. FINAL PAYMENT SHALL NOT BE RELEASED UNTIL THIS INFORMATION IS SUBMITTED
TO AND REVIEWED BY THE PROJECT ENGINEER.
RELATIONSHIPS WITH EXISTING FACILITIES
16. UNLESS OTHERWISE INDICATED, THE WATER TREATMENT PLANT MUST REMAIN IN OPERATION
DURING CONSTRUCTION OF THIS PROJECT. EXISTING EQUIPMENT MUST BE AVAILABLE TO
PLANT PERSONNEL AT ALL TIMES. THE CONTRACTOR SHALL KEEP THE SITE FREE OF CLUTTER
AND DEBRIS. AT NO TIME SHALL THE CONTRACTOR'S PERSONNEL, EQUIPMENT, OR MATERIAL
PREVENT THE RAPID ACCESS BY PLANT STAFF TO ANY ITEM OF EQUIPMENT, PIPING, WIRING, OR CONTROLS. IF THE PLANT MANAGER OR PLANT PERSONNEL ASK THE CONTRACTOR TO
REMOVE THEIR EQUIPMENT, MATERIALS, OR ANY MATERIAL INCLUDED IN THE WORK, THEY
SHALL DO SO PROMPTLY AND PLACE SAID EQUIPMENT OR MATERIAL IN AN AREA WHICH DOES
NOT INTERFERE WITH THE PLANT FUNCTION. THE CONTRACTOR SHALL NOT ADJUST OR
OPERATE ANY SERVICEABLE OR FUNCTIONING EQUIPMENT OR SYSTEM WITHOUT THE
CONSENT OF THE PLANT MANAGER.
17. THE CONTRACTOR SHALL NOTIFY THE ENGINEER AND PLANT MANAGER ONE WEEK IN
ADVANCE OF THE TIME THAT IS NECESSARY TO TAKE OUT OF SERVICE ANY EXISTING
EQUIPMENT, PIPELINE, OR ELECTRICAL CIRCUIT, OR TO BYPASS ANY PORTION OF THE PLANT.
18. THE CONTRACTOR SHALL PROVIDE ALL TEMPORARY PIPING OR ELECTRICAL WIRING AS
NECESSARY TO MAINTAIN OPERATION OF THE PLANT AT ALL TIMES DURING CONSTRUCTION.
19. THE CONTRACTOR SHALL PROVIDE TEMPORARY SUPPORTS FOR EXISTING EQUIPMENT WHEN
NEEDED AND WILL TAKE PRECAUTIONS TO PROTECT ALL EQUIPMENT REMAINING IN SERVICE.
PROTECTION OF INSTALLATIONS
20. THE CONTRACTOR SHALL CORRECT OR REPLACE WITHOUT DELAY ANY AND ALL DAMAGE TO
EXISTING STRUCTURES, SURFACES, EQUIPMENT, CONTROLS OR SYSTEMS RESULTING FROM
HIS OPERATIONS AT THE CONTRACTOR'S SOLE EXPENSE.
21. THE CONTRACTOR'S ATTENTION IS PARTICULARLY DIRECTED TO THE DUST, ABRASIVE
PARTICLES, DEBRIS AND DIRT GENERATED BY THE PLACEMENT, CHIPPING, CUTTING,
FINISHING AND GRINDING OF NEW OR EXISTING CONCRETE AND METAL; AND THE FUMES,
PARTICULATE MATTER, AND SPLATTER FROM WELDING, BRAZING AND PAINTING OF NEW OR
EXISTING PIPING AND EQUIPMENT. THE CONTRACTOR SHALL AS A MINIMUM USE VACUUM
CLEANERS, BLOWERS WITH FILTERS, PROTECTIVE SHIELDING, AND OTHER DUST
SUPPRESSION METHODS AT ALL TIMES TO ADEQUATELY PROTECT MOTORS, PUMPS,
ELECTRICAL EQUIPMENT, AND TREATMENT PROCESSES.
PERMANENT UTILITIES
22. THE CONTRACTOR SHALL SCHEDULE ALL WORK TO MINIMIZE INTERRUPTION OF UTILITY
SERVICES TO THE PLANT. WHERE AN INTERRUPTION IS UNAVOIDABLE, THE CONTRACTOR
SHALL GIVE AT LEAST SEVEN DAYS NOTICE TO THE ENGINEER AND PLANT MANAGER AND
SHALL SUBMIT AN ACCEPTABLE PROGRAM OF WORK FOR REVIEW. THE PLANT MANAGER
SHALL APPROVE PRIOR TO WORK BEING PERFORMED.
DEACTIVATING EXISTING FACILITIES
23. THE WEST SEDIMENTATION BASIN AT THE WATER TREATMENT PLANT WILL BE TAKEN OUT OF
SERVICE DURING THE CONSTRUCTION OF THE PROJECT TO ALLOW REMOVAL OF EXISTING
GROUT FROM THE FLOOR OF THE NORTHWEST AND SOUTHWEST CLARIFIERS, GROUTING OF
THE FLOOR, COATING OF WALLS, AND INSTALLATION OF NEW SCRAPER BLADES.
24. WORK IN EAST BASIN MUST BE COMPLETE AND THE BASIN RETURNED TO SERVICE BEFORE
THE WEST BASIN CAN BE TAKEN OUT OF SERVICE AND MADE AVAILABLE FOR WORK THERE.
CONTRACTOR MUST CONSIDER THE TIME FOR THIS TRANSITION IN PLANNING TO COMPLETE
THE PROJECT WITHIN THE OVERALL PROJECT TIME.
25. PRIOR TO INITIATING CONSTRUCTION, THE CONTRACTOR SHALL FULLY INVESTIGATE THE
WORK SITE AND IDENTIFY ALL NECESSARY CONCRETE CRACK AND JOINT REPAIRS. A FULL
REPORT SHALL BE PROVIDED TO THE PLANT MANAGER AND ENGINEER FOR REVIEW AND
APPROVAL.
REHABILITATION OF EXISTING STRUCTURES
26. THE WEST SEDIMENTATION BASIN SHALL BE TAKEN OUT OF SERVICE AS A PART OF THIS
PROJECT TO ALLOW THE REMOVAL OF EXISTING GROUT LAYER ON THE FLOOR OF THE
CLARIFIER. THE CONTRACTOR SHALL REMOVE THE GROUT LAYER BY ANY REASONABLE
METHOD INCLUDING HYDRO-BLASTING, CHIPPING HAMMER OR OTHER LIGHT TOOL METHODS.
THE USE OF LARGE JACK HAMMERS WILL NOT BE ALLOWED DUE TO THE POSSIBILITY OF
DAMAGE TO THE CONCRETE FLOOR UNDER THE GROUT LAYER. ALL GROUT MATERIAL SHALL
BE REMOVED FROM THE CLARIFIER AND DISCARDED OFFSITE. WHEN REMOVING THE GROUT
LAYER FROM THE FLOOR OF THE CLARIFIER, THE CONTRACTOR SHALL TAKE GREAT CARE TO
NOT DAMAGE THE MECHANISM IN THE CLARIFIER.
27. THE CONTRACTOR SHALL REMOVE LOOSE AND DETERIORATED CONCRETE IN THE SLOPED
AREAS IN THE CORNERS OF THE CLARIFIER. HE SHALL THEN PLACE NEW CLASS A CONCRETE
(PER SECTION 03305) IN THESE AREAS TO REESTABLISH THE SLOPES TO ORIGINAL CONDITION.
28. PRIOR TO GROUTING OF THE FLOOR, CONTRACTOR SHALL MAKE ALL NECESSARY CONCRETE
CRACK AND JOINT REPAIRS AS IDENTIFIED IN THE CONTRACTOR'S REPORT AND APPROVED BY
THE ENGINEER AND PLANT MANAGER. CONTRACTOR SHALL FOLLOW THE REPAIR
PROCEDURES AS SPECIFIED AND NOTED IN THE CONTRACT DOCUMENTS IN ACCORDANCE
WITH THE MANUFACTURER'S INSTRUCTIONS.
29. PRIOR TO GROUTING THE FLOOR OF THE CLARIFIER, THE CONTRACTOR SHALL INSPECT THE
CLARIFIER MECHANISM TO ENSURE ALL BOLTS ARE SECURELY TIGHTENED AND IN GOOD
CONDITION. CONTRACTOR SHALL LEVEL THE EXISTING CLARIFIER MECHANISM PRIOR TO
INSTALLATION OF GROUT. THE CONTRACTOR SHALL THEN REMOVE THE SCRAPER BLADES
FROM THE RAKE. SCREED BOARDS SHALL THEN BE ATTACHED TO THE TWO RAKE ARMS IN A
MANNER RECOMMENDED BY OVIVO (EIMCO), THE MANUFACTURER OF THE CLARIFIER
MECHANISM. ON COMPLETION OF GROUTING, NEW SCRAPER BLADES SHALL BE INSTALLED.
CLEANING UP
30. THE CONTRACTOR SHALL NOT ALLOW THE SITE OF THE WORK TO BECOME LITTERED WITH
TRASH AND WASTE MATERIAL BUT SHALL MAINTAIN THE SITE OF THE WORK IN A NEAT AND
ORDERLY CONDITION THROUGHOUT THE CONSTRUCTION PERIOD. ON OR BEFORE THE
COMPLETION OF THE WORK, THE CONTRACTOR SHALL CAREFULLY CLEAN OUT ALL PITS,
DRAIN LINES AND DRAINS, CHAMBERS AND CONDUITS AND SHALL REMOVE ALL TEMPORARY
STRUCTURES AND RUBBISH OF ALL KINDS FROM ANY OF THE GROUNDS WHICH HE HAS
OCCUPIED AND LEAVE THEM IN FIRST CLASS CONDITION TO THE SATISFACTION OF THE
ENGINEER.
31. THE CONTRACTOR IS ADVISED THAT THE FINAL CLEANUP OF THE PROJECT SHALL BE DONE
WITH METICULOUS CARE AND THAT THE ENGINEER EXPECTS ALL BASINS, CHANNELS, PIPES,
AND CHAMBERS TO BE THOROUGHLY CLEANED AND DUST FREE PRIOR TO FINAL ACCEPTANCE
OF THE WORK.
USE OF OWNER'S FACILITIES
32. CONTRACTOR SHALL MAINTAIN FOR ALL EMPLOYEES AND SUBCONTRACTORS PARKING,
RESTROOMS, TELEPHONE SERVICE, SHOWERS AND WATER FOUNTAINS. PLANT FACILITIES
WILL NOT BE AVAILABLE FOR CONTRACTOR'S USE.
33. CONTRACTOR SHALL OPERATE THE EXISTING RAKE ONLY UNDER THE OWNER'S INSTRUCTION.
CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE TO THE CLARIFIER MECHANISM
THAT OCCURS DURING OPERATION.
34. THE CONSTRUCTION ACTIVITIES SHALL BE PERFORMED IN SUCH A WAY AS TO MINIMIZE
DISRUPTION OF THE SURROUNDING AREA AND TO LIMIT NUISANCE CONDITIONS AS FOLLOWS:
A. CONTRACTOR'S PERSONNEL SHALL ONLY PARK IN THE AREA DESIGNATED ON
THESE DRAWINGS. THE CONTRACTOR SHALL NOT BLOCK STREET OR DRIVEWAY
ACCESS OR VEHICULAR TRAFFIC BY HIS ACTIVITIES. PROPER TRAFFIC CONTROL
MEASURES SHALL BE USED WHERE REQUIRED.
B. THE CONTRACTOR SHALL LIMIT NOISE AT THE CONSTRUCTION SITE AS MUCH AS
POSSIBLE. ALL INTERNAL COMBUSTION ENGINES SHALL BE EQUIPPED WITH
PROPERLY OPERATING MUFFLERS.
C. THE CONTRACTOR'S WORK SHALL BE LIMITED TO BETWEEN THE HOURS OF 7 AM
AND 7 PM MONDAY THROUGH SATURDAY. SUNDAY WORK WILL ONLY BE
CONSIDERED UPON REQUEST GIVEN TO THE PROJECT ENGINEER OR RESIDENT
PROJECT REPRESENTATIVE PRIOR TO NOON ON FRIDAYS. A DECISION TO ALLOW
WORK ON SUNDAY WILL BE MADE BY THE PLANT MANAGER PRIOR TO 5 PM ON THE
FRIDAY IN QUESTION.
D. DUST SHALL BE STRICTLY CONTROLLED AT THE PLANT SITE DURING
CONSTRUCTION.
E. THE CONTRACTOR SHALL EXERCISE CAUTION IN TRAVELING OVER EXISTING
PAVING IN AND NEAR THE CITY OF AMARILLO. WHEEL LOADS FOR CONCRETE,
EQUIPMENT DELIVERY AND OTHER TRUCKS SHALL NOT EXCEED LEGAL LIMITS AND
LIMITS FOR STREETS SET BY THE CITY OF AMARILLO. ALL STREETS, ESPECIALLY IN
THE VICINITY OF THE PLANT SITE, SHALL BE KEPT CLEAN AND FREE FROM MUD
AND DEBRIS. ONLY RUBBER TIRED VEHICLES SHALL BE ALLOWED ON PAVEMENT.
THE CONTRACTOR SHALL NOT OPERATE TRACKED EQUIPMENT OR VEHICLES ON
PAVEMENT. THE CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIRING ALL
DAMAGE TO PAVEMENT CAUSED BY THE CONTRACTOR'S NEGLIGENT USE OR
NONCOMPLIANCE WITH LAWS AND ORDINANCES.
F. CONTRACTOR SHALL NOT USE OFF SITE STORAGE WITHOUT OWNER'S WRITTEN
APPROVAL. IT SHALL NOT CAUSE A NUISANCE OR BE VISIBLE TO THE GENERAL
PUBLIC.
Sheet List Table
Sheet Number Sheet Title
-- COVER
G-001 GENERAL NOTES
C-101 SITE PLAN
C-102 EXISTING SETTLING BASIN PLAN
C-301 BASIN SECTION DETAILS
C-501 DETAILS
C-901 DETAIL PHOTOS
C-902 DETAIL PHOTOS 2
S1 BID ALTERNATE 2 STRUCTURAL
GENERAL NOTES AND SCHEDULES
S2 BID ALTERNATE 2 STRUCTURAL
WALKWAY AND HANDRAIL DETAILS
6/19/26
GRAPHIC SCALE IN FEET
150' 300'150'
WEST BASIN WORK AREA
SEE SHEET C-102
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PLANT ENTRANCE
SI
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C-101
CONTRACTOR
STAGING AREA
SILT FENCE
ADMIN BUILDING
TEMPORARY
CONTRACTOR PARKING
SEDIMENTATION BASINS
FILTERS
CHEMICAL
BUILDING
FLOCCULATORS
SLUDGE PONDS
TEMPORARY SEDIMENT CONTROL FENCE
NTS
ATTACH THE W.W.M. AND FABRIC ON END POSTS
USING 4 T-CLIPS OR SEWN VERTICAL POCKETS.
2"
PLACE 6" OF FABRIC AGAINST
THE TRENCH SIDE AND APPROX. 2" ACROSS
TRENCH BOTTOM IN UPSTREAM DIRECTION.
MINIMUM TRENCH SIZE SHALL BE 6" SQUARE.
BACKFILL AND HAND TAMP.
90°
4' MIN. STEEL POSTS SPACED
AT 6' TO 8'.
GALV. W.W.M. (12.5 GA. MIN.)
MAX. OPENING SIZE
SHALL BE 2" X 4".
CONNECT THE ENDS OF SUCCESSIVE
REINFORCEMENT SHEETS OR ROLLS
A MIN. OF 6 TIMES WITH HOG RINGS.
FLOW
WOVEN FILTER FABRIC
FASTEN FABRIC TO TOP STRAND OF WELDED
WIRE MESH (W.W.M.) BY HOG RINGS OR CORD
AT A MAX. SPACING OF 15".
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MEETING ROOM
0 20' 40'20'
GRAPHIC SCALE IN FEET
C-102
EXISTING DRAIN/SLUDGE BOX
SEE NOTE 5 (TYP)
GROUT CORNERS
BY HAND (TYP)
CONTRACTOR TO REMOVE
CORNER RAKES BEFORE
BEGINNING GROUT REMOVAL
AND REPLACE UPON
COMPLETION OF REPAIR
WORK.
EXISTING LEAN CONCRETE FILL
TO BE DEMOLISHED AND
REPLACED. SEE SHEET C-301
BID ALTERNATE #1
SETTLING BASIN NO. 1
SETTLING BASIN NO. 2
LEGEND
REMOVE AND REPLACE GROUT
(SEE NOTE 1)
APPLY WATERPROOF COATING
(SEE NOTE 4)
REPAIR EXPANSION JOINT
(SEE NOTE 2)
REMOVE AND REINSTALL STAINLESS TRACK
(SEE NOTE 3)
REMOVE AND REPLACE LEAN CONCRETE FILL
REPAIR SPALLING AND INSTALL FIBERGLASS CAP
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3'
-0
30'-0"
112'-6"
1'-6"
112'-6"53'-0" 20'-0"
SEE NOTE 4
(TYP)
NOTES:
1. REMOVE AND DISPOSE OF EXISTING GROUT (THICKNESS VARIES) UNDER CLARIFIER MECHANISMS (APPROX. 24,540 SF). VERIFY SOUNDESS OF EXISTING SLAB USING
HAMMER TAPPING, CHAIN, ETC TO OWNER'S SATISFACTION. REMOVE AND REPLACE UNSOUND AREAS WITH CLASS A CONCRETE (REINFORCING TO MATCH EXISTING).
FURNISH AND INSTALL NEW GROUT WITH WATERPROOFING ADMIXTURE UNDER MECHANISM PER SPECIFICATIONS. GROUT TO BE SWEPT IN BY EXISTING CLARIFIER MECHANISM. REMOVE AND DISPOSE OF EXISTING SCRAPER BLADES. GROUT SHALL BE SWEPT IN WITH TEMPORARY SCREED BOARDS. PROVIDE AND INSTALL 3/8" HDPE SCRAPER BLADES UPON COMPLETION OF REPAIR WORK FOR PERMANENT USE. SEE DETAIL PHOTO 8 ON SHEET C-902.
2. ALL VERTICAL AND HORIZONTAL EXPANSION JOINTS WITHIN THE WEST BASIN AND EFFLUENT CHANNEL SHALL BE REPAIRED AND RESEALED ACCORDING TO THE DETAILS
ON SHEET C-501. SEE DETAIL PHOTO 4 ON SHEET C-901.
3. REMOVE AND SALVAGE EXISTING STAINLESS STEEL TRACK. CUT EXISTING ANCHOR BOLTS FLUSH. UPON COMPLETION OF REPAIR WORK, REINSTALL TRACK WITH NEW ANCHOR BOLTS (1/2" DIA SS ANCHOR WITH HILTI HIT-ICE ADHESIVE). REMOVE AND REATTACH BRACKETS TO TRACK AS NECESSARY. SEE DETAIL ON SHEET C-501.
4. UPON COMPLETION OF GROUTING WORK AND NECESSARY CONCRETE/CRACK REPAIRS, CONTRACTOR SHALL COAT THE ENTIRE WEST SEDIMENTATION BASIN (SETTLING BASIN NO. 2) INTERIOR WALLS, CONCRETE STRUCTURES, AND FLOOR UNDERNEATH EFFLUENT WEIRS WITH A WATERPROOFING COATING SYSTEM PER SPECIFICATIONS.
COATING IS NOT REQUIRED ON FLOOR AREA WHERE NEW GROUT WITH ADMIXTURE IS INSTALLED.
5. CONTRACTOR SHALL PROTECT EXISTING DRAIN AND SLUDGE BOXES DURING REPAIR WORK. SEE SHEET C-301 SECTION A-A FOR ADDITIONAL INFORMATION.
6. CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING FLOCCULATOR PADDLES AND BAFFLES FROM ANY OVERSPRAY OF THE PROPOSED WATERPROOF COATING. ANY DAMAGE TO THE PADDLES OR BAFFLES RESULTING FROM THE PROPOSED WORK SHALL BE REPAIRED AT THE CONTRACTOR'S SOLE EXPENSE. SEE DETAIL PHOTO 10 ON
SHEET C-902.
REPAIR SLUDGE BOX RIM AND APPLY
WATERPROOF COATING. SEE DETAIL PHOTO
1 AND 2 ON SHEET C-901 (TYP OF 4)
RAPID MIX BASIN NO. 1
RAPID MIX BASIN NO. 2
EXISTING LEAN CONCRETE FILL
ON DIVIDING WALL TO REMAIN.
DO NOT DISTURB. (TYP)
EXISTING LEAN CONCRETE FILL TO
BE DEMOLISHED AND REPLACED.
SEE SHEET C-301.
BID ALTERNATE #1
LOCATION OF SURFACE
CONCRETE/CRACK REPAIR ON
EXTERIOR CHANNEL WALL
LOCATION OF CONCRETE
WALKWAY STRUCTURAL
REPAIR (FULL LENGTH OF
BASIN). SEE DETAIL PHOTO
4 AND 5 ON SHEET C-901
BID ALTERNATE #2
REMOVE EXISTING EXPANSION
JOINT SEALANT AND FILLER TO
9' BELOW EXISTING GRADE.
REPLACE FILLER AND INSTALL
NEW JOINT SEALANT
REPAIR SPALLING AND
INSTALL FIBERGLASS CAP
ALONG ENTIRE WEST WALL
CONTRACTOR TO VERIFY LOCATIONS OF ALL
EXISTING UNDERGROUND UTILITIES. PROTECT
AND BRACE ALL EXISTING UTILITIES TO ALLOW
FOR CONSTRUCTION IN THIS AREA. REPAIR ANY
DAMAGE. LOCATION, PROTECTION, AND REPAIR
OF DAMAGE TO EXISTING UTILITIES SHALL BE AT
NO COST TO THE OWNER.
REMOVE EXISTING
TEMPORARY CRACK REPAIR
PRIOR TO APPLYING
WATERPROOF COATING
113'-0" 12"12"
17'-0"
112'-6" 1'-6"1'-6"
17'-2"
4'-0"
SETTLING BASIN NO. 2
T/WALL ELEV. 3616.50
W.L. ELEV. 3615.00
3/4
3/4
SLUDGE POCKET
TRUSS TYPE BRIDGE
BA
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C-301
SECTION A-A
SCALE 3/4"=1'-0"
NOTES:
1. CONTRACTOR SHALL PLACE A NEW SEWER PLUG IN THE EXISTING 12" PIPE EXITING THE SLUDGE POCKET. CONTRACTOR SHALL THEN PLACE 34" PLYWOOD OVER ENTIRE OPENING OF THE SLUDGE POCKET DURING ALL GROUTING OPERATIONS. PLYWOOD SHALL BE SUPPORTED AS NECESSARY AND SHALL LEAVE NO GAPS GREATER THAN 14". ALL GAPS BETWEEN THE PLYWOOD AND THE EXISTING CONCRETE SHALL BE SEALED WITH CAULK. THE SEWER PLUG SHALL NOT BE REMOVED UNTIL ALL WORK IN THE CLARIFIER IS COMPLETE. CONTRACTOR SHALL PUMP OUT ALL ACCUMULATED LIQUIDS RATHER THAN ALLOWING THEM TO ENTER DRAIN LINE. CONTRACTOR SHALL REMOVE ANY TRASH IN THE DRAIN LINE ONCE CONSTRUCTION IS COMPLETE.
THE PLUG SHALL BECOME THE PROPERTY OF CITY OF AMARILLO.
2. ALL GROUT SHALL INCLUDE WATERPROOF CRYSTALLINE ADMIXTURE (XYPEX C-1000, SIKA WATERTIGHT CONCRETE POWDER OR ENGINEER APPROVED EQUAL) AT MANUFACTURER'S
RECOMMENDED DOSAGE.
3. OWNER'S PROJECT REPRESENTATIVE ASSIGNED TO THIS PROJECT SHALL INSPECT TEMPORARY SCREED BOARDS BEFORE GROUTING AND PROVIDE WRITTEN APPROVAL.
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SHEET NO.
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REMOVE AND DISPOSE OF EXISTING GROUT UNDER
CLARIFIER MECHANISM. FURNISH AND INSTALL NEW
GROUT UNDER MECHANISM PER SPECIFICATIONS
(THICKNESS VARIES). USE EPOXY BONDING AGENT
BETWEEN NEW GROUT AND EXISTING CONCRETE
SLAB. GROUT SHALL BE SWEPT IN BY EXISTING
CLARIFIER MECHANISM.
CONTRACTOR SHALL REMOVE EXISTING RAKE ARM
SCRAPER BLADES TO ALLOW PLACING OF GROUT WITH
SCREED BOARDS. UPON COMPLETION OF GROUTING,
REPLACE SCREED BOARDS WITH NEW 38" HDPE SCRAPER
BLADES. BLADES SHALL BE MANUFACTURED WITH SLOTS
TO ALLOW FOR VERTICAL ADJUSTMENTS. PROVIDE 3/4"
GAP BETWEEN INSTALLED BLADES AND FINISHED FLOOR.
CONTRACTOR SHALL LEVEL CLARIFIER MECHANISM
BEFORE PLACING PROPOSED GROUT.
CONTRACTOR SHALL LEVEL RAKES BEFORE AND
AFTER INSTALLATION OF PROPOSED GROUT.
CONTRACTOR SHALL VERIFY THAT THE CLARIFIER
TOWER IS PLUMB BEFORE LEVELING RAKES.
APPLY WATERPROOF
COATING TO INTERIOR
WALLS
APPLY WATERPROOF
COATING TO INTERIOR
WALLS
ROUGHEN EXISTING
CONCRETE SURFACE
AND USE EPOXY
BONDING AGENT, TYP.
FILL WITH 4000 PSI
(GROUT) PER
SPECIFICATION 03305
SLOPE FROM TOP
OF WALL TO TOP
OF CURB
SLOPED CONCRETE AREA - SECTION (TYP)
AS PART OF BID ALTERNATE #1
SCALE 1" = 4'
EXISTING
CONCRETE WALL
EXISTING
CONCRETE CURB
8" 8"
8'-6"
MAX HEIGHT
OF SLOPE
1'-4"
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SHEET NO.
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CUT EXISTING ANCHOR BOLTS FLUSH.
INSTALL NEW S.S. ANCHOR BOLTS (1
2"Ø X 4 12"
EMBEDMENT ANCHOR WITH HILTI HIT-RE 500
ADHESIVE OR ENGINEER APPROVED
EQUAL). MATCH EXISTING SPACING.
EXPANSION JOINT DETAILS
N.T.S.
S.S. TRACK MOUNTING DETAIL
N.T.S.
EXPANSION JOINT DETAILS
N.T.S.
SURFACE CONCRETE AND CRACK
REPAIR DETAIL
N.T.S.
WATERPROOF COATING
AS SPECIFIED
CONCRETE SURFACE
REPAIR MORTAR AS
SPECIFIED
CHIP AND FILL WITH CRACK
REPAIR GROUT AS
SPECIFIED TO STOP WATER
FLOW
ACTIVELY LEAKING
CRACK
SLURRY COATING AS SPECIFIED
1.5"
1.5"
NOTES:
1. CONTRACTOR SHALL FOLLOW MANUFACTURERS' PUBLISHED
INSTRUCTIONS AND RECOMMENDATIONS IN THE PREPARATION,
APPLICATION, AND CURING OF REPAIR PRODUCTS.
2. SEE SPECIFICATION 03900.
STRUCTURAL CONCRETE
REPAIR MORTAR AS SPECIFIED
PRIMER COATING AS SPECIFIED
STRUCTURAL CONCRETE REPAIR
DETAIL
N.T.S.
WATERPROOF COATING
AS SPECIFIED
SECTION SECTION
NOTES:
1. CONTRACTOR SHALL USE STRUCTURAL REPAIR DETAIL FOR
ANY REPAIR THAT EXPOSES REINFORCEMENT.
2. UNDERCUT ALL EXPOSED REINFORCING STEEL BY REMOVING
CONCRETE FROM THE FULL CIRCUMFERENCE OF STEEL TO
PROVIDE A MINIMUM CLEARANCE OF 34".
3. CONTRACTOR SHALL FOLLOW MANUFACTURERS' PUBLISHED
INSTRUCTIONS AND RECOMMENDATIONS IN THE PREPARATION,
APPLICATION, AND CURING OF REPAIR PRODUCTS.
4. SEE SPECIFICATION 03900.
3/4"
MINIMUM
LARGER
THAN 6"
DEMOLITION
REMOVE EXISTING GROUT
(THICKNESS VARIES)
REMOVE EXISTING GROUT TO MATCH DEPTH OF
ADJACENT GROUT REMOVAL. CONTRACTOR SHALL
SOUND REMAINING MATERIAL. REMOVE ANY AREAS OF
DELAMINATION OR OTHER UNSOUNDNESS AND
REPLACE WITH CLASS A CONCRETE OR GROUT AS
DESCRIBED IN SECTION 03305 AND DIRECTED BY THE
ENGINEER.
JOINT SEALING
SIKA COMBIFLEX SG
(8 IN WIDTH)
1"MIN.
4" CHAMFER (TYP.)
SLOPE AS NEEDED TO AID IN
REMOVING TEMPORARY BLOCKING
1" ± WATERTIGHT JOINT SEALANT
(SUBMERSEAL BY EMSEAL
OR ENGINEER APPROVED EQUAL)
CONTRACTOR TO FIELD MEASURE
ALL EXPANSION JOINTS BEFORE
ORDERING MATERIAL.
2" (T
YP
REMOVE EXISTING JOINT SEALANT AND
FILLER MATERIAL TO EX WATER STOP. DO
NOT DAMAGE EXISTING WATER STOP.
EPOXY BONDING
AGENT (TYP.)
PROPOSED GROUT (7 SACK PEA GRAVEL
MIX WITH WATERPROOFING ADMIXTURE
AND PROPEX FIBERMESH 300 OR
ENGINEER APPROVED EQUAL)
EXISTING GROUT
EXISTING WATER STOP
10"
(TYP.)
10" (TYP.)
EXISTING REINFORCING
TO BE PROTECTED
NOTES:
1. REPAIR OF EXPANSION JOINTS ON WALL SHALL FOLLOW THE
SAME PROCESS AS FLOOR EXPANSION JOINTS MINUS THE
REMOVAL AND PLACEMENT OF GROUT.
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C-901
DETAIL PHOTO 1 - CONCRETE REPAIR
SLUDGE BOX RIM
DETAIL PHOTO 4 -
TYPICAL EXPANSION JOINT
DETAIL PHOTO 2 - WATERPROOF COATING
SLUDGE BOX WALLS
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SHEET NO.
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DETAIL PHOTO 5 - CONCRETE REPAIR
UNDERSIDE OF WALKWAY
BID ALTERNATE #2
DETAIL PHOTO 6 - CONCRETE REPAIR
UNDERSIDE OF WALKWAY
BID ALTERNATE #2
REFER TO DETAIL SURFACE
CONCRETE AND CRACK
REPAIR DETAIL ON SHEET
C-501 INSTALL WATERPROOF COATING
ON SLUDGE BOX WALLS
REMOVE AND REPLACE
EXISTING WALKWAY. SEE
STRUCTURAL SHEETS.
REINSTALL EXISTING
HANDRAILS, PIPING, CONDUIT,
WIRE, ETC. WITH NEW HANGERS
AND ANCHOR BOLTS.
REMOVE AND REPLACE
EXPANSION JOINT MATERIAL.
REFER TO JOINT SEALING
DETAIL ON SHEET C-501
DETAIL PHOTO 3 - REPAIR EXTERIOR
EXPANSION JOINT
REMOVE EXPANSION JOINT
FILLER AND SEALANT. REPLACE
WITH EMSEAL SEAL JOINT
EXISTING LEAN CONCRETE FILL TO
BE DEMOLISHED AND REPLACED.
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C-902
DETAIL PHOTO 7 - NORTH
WEST BASIN
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SHEET NO.
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DETAIL PHOTO 8 - SOUTH
WEST BASIN
DETAIL PHOTO 9 - CLARIFIER
RAKE ARM
DETAIL PHOTO 10 - SLOPED CONCRETE
BID ALTERNATE #1
DETAIL PHOTO 11 - WEST
FLOCCULATION BASIN
CONCRETE REINFORCING LAP SPLICE TABLE
CONCRETE COVER REQUIREMENTS
CONCRETE MATERIAL SCHEDULE
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P R
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SIONAL ENG
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OF TEXA
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128045
LICENSED
MARCOS A. WORTLEY
11/17/2025
SAW-CUT AND DEMO - SECTION
PROPOSED REPLACEMENT - SECTION
TYPICAL HANDRAIL DETAIL
HANDRAIL POST FASTENING TO CONCRETE
CONSTRUCTION JOINT KEY DETAILS
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MARCOS A. WORTLEY
11/17/2025
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