ntb2508haskl00031ad1.pdf

19 W. Beauregard Avenue

San Angelo, TX 76903

(325) 757-1001 centurionplan.design

ADDENDUM NO. 1

To: All Plan Holders

From: James W. Davidson, P.E., Centurion Planning and Design, LLC.

CC: Steve Harp, Eli Lopez

Date: June 4, 2026

Subject: Haskell Municipal Airport – Airport Pavement Rehab Bidding; CSJ 2508HASKL, Addendum No. 1

Attention of all Prospective Proposers/Plan Holders is directed to the following modifications to referenced Plans and Technical Specifications. This Addendum becomes a part of Contract

Documents and modifies original Contract Documents dated June 2026. Please find attached the required addendum for the above-mentioned project. Below are the listed changes made.

1. Attachment A contains the pre-bid meeting agenda and minutes

2. Attachment B contains the sign-in sheet from the pre-bid meeting.

3. Attachment C contains the Questions and Answers Memo addressing questions submitted during project advertisement.

4. Attachment D contains revised plan set sheets based on Questions submitted during project advertisement and the pre-bid meeting

5. The revised bid form is included as a separate fillable PDF to be downloaded in addition to this addendum packet.

Attachments:

Attachment A – Pre-Bid Meeting Agenda and Minutes

Attachment B – Pre-Bid Meeting Sign-In Sheet

Attachment C – Question and Answer Sheet

Attachment D – Revised Plan Set Sheets

James W. Davidson, P.E.

6/4/2026

Attachment A

Meeting Agenda and Notes

Meeting Minutes

Meeting Topic: Haskell Municipal Airport – Airport Pavement Rehab Pre Bid; CSJ 2508HASKL

Date/Time: 5/27/2026, 1:30 PM

Location: Haskell City Hall

Attendees/ Invitees

Name Organization Attended Name Organization Attended

Monty Brown Centurion X Eli Lopez TxDOT X

Dan Neelley Centurion X Clayton Zuber Allen Keller X

Richard Smith Centurion X

Steve Harp TxDOT X

Meeting Agenda

1. INTRODUCTION

A. City of Haskell/Haskell Municipal Airport – Matt Ussrey, Director of Public Works

B. Centurion Planning & Design (Engineer) – Dan Neelley, P.E., Richard Smith, E.I.T.

2. GENERAL PROJECT DESCRIPTION AND OVERVIEW

A. Project Description

i. Base bid includes: demolition of existing pavements with incidental base work, and new pavement placement along Runway. Application of crack seal and surface treatment for taxiway and apron area.

Pavement markings for all areas being rehabilitated.

3. BIDDING PROCESS:

A. Bid Requirements

i. Sealed bids for the construction of airport improvements at Haskell Municipal Airport need to be addressed and delivered to Kelle Chancey, TxDOT Aviation Division, 6230 E. Stassney Lane, 2nd Floor, Austin, Texas

78744. Bids will be received until 2:00 P.M., June 11, 2026, then publicly opened and read. Any bid received after closing time will be returned unopened.

ii. Bidders must submit the completed bid on the formatted bid form furnished by TxDOT, with all blank spaces in the TxDOT bid form correctly typed in for each item for which a quantity is given to be considered complete.

iii. Project is State funded, so for a bid to be considered complete, it must include all necessary bid certifications. This includes: bid form, bid bond, bidder qualifications, addendum acknowledgement.

iv. All bid documents (including Bid Form) should be signed with ink or an official digital signature.

v. Contractor Questions can be submitted until 2:00 P.M., June 4, 2026. Any questions received after this time will not be answered.

B. Addenda:

i. Bid addendum will be issued after the question deadline

ii. Addendum No. 1 will include the following

1. Prebid Sign-in sheet.

2. Prebid Agenda with minutes.

3. Issues or clarification from Prebid Meeting.

4. Question and answer sheet of all questions received during bidding.

5. Plan sheets, specifications, or bid documents that require revision.

4. PROJECT DISCUSSION

A. Specific Work Items Discussion

i. Item 1 Base Bid – Mobilization and Erosion/Sedimentation Control Measures

1. Mobilization

ii. Item 2 Base Bid – Runway Pavement Rehabilitation

1. TxDOT Item 105 Remove Asphalt Pavement

2. TxDOT Item 216 Proof Rolling

3. TxDOT Item 351 Flexible Pavement Structure Repair

4. TxDOT Item 310 Prime Coat

5. TxDOT Item 341 Asphalt Mix Pavement Surface Course

6. FAA Item T-901 Seeding

7. FAA Item P-152 Excavation and Embankment

8. Current width of Runway(50’), FAA is 60’ Minimum (Outside of Scope)

iii. Item 3 Base Bid – Apron and Taxiway Pavement Rehabilitation

1. FAA item P-101 Prepare Surface

2. FAA item P-101 Clean, Prepare Joints for Ceiling

3. FAA item P-605 Joint Sealants for Pavements

4. FAA item P-629 Thermoplastic Coal Tar Surface Treatment

iv. Item 4 Base Bid – Airfield Electrical Items

1. FAA item P-620 Reflective Pavement Markings – white, yellow

2. FAA item P-620 Non-Reflective Pavement Markings – black, green

3. FAA item P-620 Temporary Pavement Markings - white

B. Project General Provisions

i. Contract Time – 75 calendar days under base bid.

ii. Liquidated Damages – $1,000 per calendar day.

Additional Items of Discussion

• SP-004 requires prime to perform 30% of the work.

• Buy American required compliance (Section 1 of General Provisions).

• Contractor is responsible for quality control plan; testing lab required.

• Centurion is responsible for quality assurance plan.

• 0% HUB goal but the HSP (HUB Subcontracting Plan) is required if utilizing any HUBs on the contract.

• Subcontract plan is due at time of bids and contractor needs to give subcontractors plenty of time to respond.

• Confusion on different details in plans with full depth repair showing 6” but Item 351 is for 2”.

Resolution - Items and plan sheets to be updated with addendum 1.

Critical Dates

Addendum to TxDOT June 3, 2026

TxDOT to Post Publications/Addendum June 4, 2026

Attachment B

Attachment C

19 W. Beauregard Avenue

San Angelo, TX 76903

(325) 757-1001 centurionplan.design

QUESTIONS AND ANSWERS

To: All Plan Holders

From: James W. Davidson, P.E., Centurion Planning and Design, LLC.

CC: Steve Harp, Eli Lopez

Date: June 4, 2026

Subject: Haskell Municipal Airport – Airport Pavement Rehab Bidding; CSJ 2508HASKL, Addendum No. 1

Attention of all Prospective Proposers/Plan Holders is directed to the following questions that were brought to the Engineers attention during project advertisement. Below each question is the provided answer in an attempt to provide clarity to the project. Please find the list of questions and answers below.

Questions

Q1: Per Sheet C-001, the Summary of Quantities has TxDOT item 351 “Flexible Pavement Structure

Repair” listed with a depth of 2”, but sheet C-009 detail 04 shows full depth repair to be 6”.

Is the repair to be 2” or 6”?

A1: Bid form and Plan Sheet C-001 have been revised for a depth of 6”. Please see revised bid form and sheet.

Q2: Per Sheet C-010 detail 01, the cross section shows “Reworked Existing Base (3”-4”)”. Is this to be the entire length of runway, and if so there is currently no pay item for 3”-4” of base work

A2: Reworking of base is only to occur in areas where repair is needed after proof rolling, Plan

Sheet C-010 detail 01 has been revised accordingly. Please see revised sheet.

Q3: Per Sheet C-006, Demolition Note 6 states that “Removal of structures found in an excavation area shall be considered unclassified excavation and shall be paid for with the corresponding unit price as noted in FAA Item P-152.” Can you confirm whether there are any known existing structures within the excavation limits that bidders should account for, or is this note intended as a general provision?

A3: The note is intended as a general provision, and no known existing structures are to be impacted.

Q4: Per Sheet C-001, the Summary of Quantities shows 1,114 LF for item P-605. Will you please verify that the quantity is correct?

A4: The quantity shown on C-001 is the correct estimated amount of joint sealant.

Attachment D

GENERAL NOTES

ADDITIONAL NOTES ON PLAN SHEETS

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MARK REVISION DATE

LATEST REVISION:

DRAWN BY:

DESIGNED BY:

JOB NO.

06/03/2026

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15F2501D

Sheet No.

Seal:

Centurion Planning and Design 19 W. Beauregard Ave San Angelo, TX 76903

Phone No. (325) 757-1001 Firm No. 19840

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SAFETY NOTES:

1. WHILE THE AIRPORT IS OPEN, NO VEHICLE OR EQUIPMENT SHALL

MOVE UPON APRONS, TAXIWAYS AND/OR RUNWAYS WITHOUT

FIRST NOTIFYING THE AIRPORT. NOTIFICATION SHALL BE

COORDINATED THROUGH THE AIRPORT DIRECTOR, MATT

USSERY (940-224-4361).

2. ALL VEHICLES OPERATING ON THE AIRFIELD MUST BE

MONITORING CTAF FREQUENCY 122.9 MHz AND BE IDENTIFIED BY

FLAG AND/OR FLASHING AMBER LIGHT.

3. FLAGMEN WILL BE REQUIRED TO DIRECT THE CONTRACTOR'S

VEHICLES AND EQUIPMENT WHICH ARE OPERATING IN THE AREA

OF MOVING AIRCRAFT. FLAGMEN TO MONITOR CTAF, FREQUENCY

122.9 MHz. AIRCRAFT ALWAYS HAVE THE RIGHT-OF-WAY.

4. CONSTRUCTION PERSONNEL AND EQUIPMENT WILL NOT BE

ALLOWED WITHIN THE OPERATIONS AREA OF THE AIRPORT UNTIL

THE AREA HAS BEEN CLOSED TO AIRCRAFT AND NOTAMS ISSUED.

5. REFERENCE AC 150/5370-2G, "OPERATIONAL SAFETY ON

AIRPORTS DURING CONSTRUCTION".

6. GENERAL SAFETY REQUIREMENTS: DURING PERFORMANCE OF

THIS CONTRACT, THE AIRPORT RUNWAYS, TAXIWAYS, AND

AIRCRAFT PARKING APRONS SHALL REMAIN IN USE BY AIRCRAFT

TO THE MAXIMUM EXTENT POSSIBLE. AIRCRAFT USE OF AREAS

NEAR THE CONTRACTOR'S WORK WILL BE CONTROLLED TO

MINIMIZE DISTURBANCE TO THE CONTRACTOR'S OPERATION.

THE CONTRACTOR SHALL NOT ALLOW HIS/HER EMPLOYEES,

SUBCONTRACTOR'S SUPPLIERS, OR ANY PERSON OVER WHOM

HE/SHE HAS CONTROL TO ENTER OR REMAIN IN ANY PART OF

THE AIRPORT WHICH WOULD BE HAZARDOUS TO PERSONS OR

TO AIRCRAFT OPERATIONS. WHENEVER AIRCRAFT OPERATIONS

REQUIRE, THE ENGINEER MAY ORDER THE CONTRACTOR TO

SUSPEND OPERATIONS, MOVE PLANT, PERSONNEL, EQUIPMENT,

AND MATERIALS TO A SAFE LOCATION AND STAND BY UNTIL

AIRCRAFT USE IS COMPLETED.

7. VEHICLE IDENTIFICATION AND PARKING: (A) CONTRACTOR

VEHICLES AND EQUIPMENT SHALL BE IDENTIFIED BY FLAGS AND

AMBER FLASHING LIGHTS. (B) EMPLOYEE PARKING SHALL BE IN

THE CONTRACTOR'S STAGING AND STORAGE AREA.

8. THE CONTRACTOR SHALL NOT, FOR ANY REASON ENTER ACTIVE

AIRFIELD AREAS WITHOUT EXPLICIT APPROVAL BY AIRPORT

MANAGEMENT. THE CONTRACTOR SHALL LIMIT OPERATIONS TO

LIMITS OF CONSTRUCTION ACTIVITIES.

9. RUNWAY 18/36 MUST BE CLOSED ANYTIME CONSTRUCTION

ACTIVITY IS OCCURRING WITHIN 60' ON EITHER SIDE OF THE

RUNWAY CENTERLINE. THE NUMBER AND THE DURATION OF

RUNWAY CLOSINGS SHALL BE MINIMIZED. IN ORDER TO MINIMIZE

RUNWAY CLOSURES, MULTIPLE CONSTRUCTION ACTIVITIES NEAR

THE RUNWAY SHOULD OCCUR SIMULTANEOUSLY WHEN IT IS

CLOSED.

10. THE CONTRACTOR SHALL EQUIP ALL CONSTRUCTION VEHICLES

AND EQUIPMENT WITH A FLAG ON A STAFF ATTACHED TO THE

VEHICLE AND READILY VISIBLE OR AMBER FLASHING LIGHT

DURING DAY HOURS AND AMBER FLASHING LIGHT DURING NIGHT

HOURS. THE FLAG SHALL BE NOT LESS THAN 3 FEET SQUARE

CONSISTING OF A CHECKERED PATTERN OF INTERNATIONAL

ORANGE AND WHITE SQUARES NOT LESS THAN ONE FOOT ON

EACH SIDE AND DISPLAYED IN FULL VIEW ABOVE THE VEHICLE.

11. ALL EQUIPMENT AND MATERIALS SHALL BE STORED IN THE

CONTRACTORS STAGING AREA WHEN NOT IN USE. EQUIPMENT

AND MATERIALS SHALL NOT ENCROACH UPON ACTIVE

OPERATIONAL AREAS. MINIMUM CLEARANCES SHALL BE

MAINTAINED ON RUNWAYS IN ACCORDANCE WITH PART 77 OF

THE FEDERAL AVIATION REGULATIONS.

12. ALL EXCAVATIONS, OPEN TRENCHES AND STOCKPILED MATERIAL

AT THE CONSTRUCTION SITE SHALL BE PROMINENTLY MARKED

WITH FLAGS AND LIGHT UNITS ACCEPTABLE TO THE ENGINEER

DURING HOURS OF RESTRICTED VISIBILITY OR DARKNESS.

13. WASTE AND LOOSE MATERIAL CAPABLE OF CAUSING DAMAGE TO

AIRPLANES MUST NOT BE PLACED ON ACTIVE AIRPLANE

MOVEMENT AREAS. MATERIAL TRACKED ON THESE AREAS MUST

BE REMOVED CONTINUOUSLY BY A SWEEPER OR VACUUM

TRUCK SUPPLIED BY THE CONTRACTOR DURING THE PROJECT.

NO DIRECT PAY IN BID PROPOSAL.

CONSTRUCTION NOTES:

1. THE CONTRACTOR SHALL SUPPLY HIS OWN FENCING, GATES AND

LOCK FOR STAGING AREA, AS NECESSARY FOR SECURITY OF

EQUIPMENT AND DELINEATION OF STAGING AREA. THE AIRPORT

IS NOT RESPONSIBLE FOR THE EQUIPMENT OR ANY OTHER OF

THE CONTRACTOR AND/OR EMPLOYEE'S ITEMS.

2. EACH CONSTRUCTION AREA SHALL BE SHAPED TO ALLOW

DRAINAGE OF SURFACE WATER DURING EACH WORK

OPERATION. THE CONTRACTOR SHALL PUMP SURFACE WATER

IMMEDIATELY FROM EACH CONSTRUCTION AREA AFTER EACH

RAIN.

3. THE MAJORITY OF THE WORK WILL BE ACCOMPLISHED DURING

NORMAL DAYTIME WORKING HOURS, OR AS APPROVED BY THE

ENGINEER.

4. STOCKPILE LOCATION SHALL BE COORDINATED WITH THE

ENGINEER. STOCKPILE SHALL NOT CREATE ANY PONDING OF

WATER OR ALTER DRAINAGE PATTERNS OF THE AIRPORT

PROPERTY EXCEPT AS SHOWN IN THESE PLANS.

5. ALL WASTE OR SPOIL MATERIAL SHALL BE DISPOSED OF OFF THE

AIRPORT PROPERTY BY THE CONTRACTOR, UNLESS OTHERWISE

NOTED OR DIRECTED BY THE ENGINEER.

6. CONTRACTOR SHALL PROVIDE AND INSTALL ALL MATERIALS AND

DRAINAGE STRUCTURES TO CONSTRUCT A STABILIZED

CONSTRUCTION EXIT AT EACH POINT WHERE CONSTRUCTION

CREWS OR EQUIPMENT WILL EXIT AIRPORT PROPERTY.

7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIR OF ANY

DAMAGE TO EXISTING PAVEMENTS, UNDERGROUND CABLES,

PIPELINES, ETC. ENCOUNTERED DURING CONSTRUCTION. ALL

REPAIRS MUST BE MADE IN COMPLIANCE WITH LOCAL

REGULATIONS, THE ENGINEER, AND THE FAA REQUIREMENTS.

8. CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING AND

ACQUIRING AN ACCEPTABLE WATER SOURCE AS REQUIRED FOR

CONSTRUCTION. NO DIRECT PAY PROVIDED IN BID PROPOSAL.

9. THE CONTRACTOR MUST PROVIDE A MINIMUM OF 72 HOURS

NOTICE TO THE RESIDENT PROJECT REPRESENTATIVE (RPR),

PRIOR TO BEGINNING CONSTRUCTION ACTIVITIES. A NOTICE TO

AIRMEN (NOTAM) SHALL BE ISSUED. THE CONTRACTOR SHALL

NOTIFY THE RPR WHO WILL THEN NOTIFY THE ENGINEER AND

THE AIRPORT.

10. CONTRACTOR SHALL CLEAN UP ALL MUD, DIRT AND DEBRIS

DROPPED ON EXISTING PAVEMENT AS A RESULT OF

CONSTRUCTION ACTIVITIES ON A DAILY BASIS. ALL CLEANUP

MUST BE COMPLETED PRIOR TO FINAL ACCEPTANCE OF THE

PROJECT.

11. CONTRACTOR SHALL PROVIDE RESTROOM FACILITIES FOR HIS

EMPLOYEES.

ACCESS ROUTE NOTES:

1. DAMAGE TO EXISTING PAVEMENTS WHICH IS CAUSED BY THE

CONTRACTOR'S OPERATIONS SHALL BE REPAIRED TO ORIGINAL

OR BETTER CONDITION AT NO EXPENSE TO THE OWNER.

2. ACCESS ROUTES FOR EACH CONSTRUCTION PHASE SHALL BE

COORDINATED WITH THE ENGINEER. ROUTES SHOWN ARE

PRELIMINARY ONLY, AND SUBJECT TO APPROVAL AND

ADJUSTMENT BY THE ENGINEER. THE CONTRACTOR SHALL BE

RESPONSIBLE FOR MAINTAINING ALL ACCESS ROUTES (PAVED &

UNPAVED). SEE PHASING PLANS FOR ADDITIONAL ACCESS

ROUTE INFORMATION.

3. THE PAVEMENT ON THE ACCESS ROUTES MAY NOT SUPPORT

CONSTRUCTION TRAFFIC. THE CONTRACTOR SHALL LIMIT LOADS

AS NECESSARY TO PREVENT DAMAGE. IF PAVEMENTS TO REMAIN

ARE DAMAGED OR REMOVED DURING CONSTRUCTION, THE

CONTRACTOR SHALL REPLACE AND/OR REPAIR THE PAVEMENT

TO ORIGINAL CONDITION OR BETTER, AT THE CONTRACTOR'S

EXPENSE, AND IN ACCORDANCE WITH THE CITY OF HASKELL'S

SPECIFICATIONS.

4. CONTRACTOR SHALL SWEEP PAVEMENTS FREQUENTLY TO KEEP

FREE OF DEBRIS.

5. CONTRACTOR SHALL SPRINKLE ALL EXCAVATION, EMBANKMENT,

BORROW AREAS AND ACCESS ROUTES WITH WATER AS

REQUIRED TO MINIMIZE DUST ON THE RUNWAY, TAXIWAYS AND

OTHER AIRCRAFT OPERATIONS AREAS AS DIRECTED BY THE

ENGINEER OR HIS REPRESENTATIVE. CONTRACTOR SHALL BE

RESPONSIBLE FOR DUST CONTROL OVER THE DURATION OF THE

PROJECT.

6. CONTRACTOR SHALL LOCATE, MARK, AND PROTECT EXISTING

ELECTRICAL CABLES, TELEPHONE CABLES, WATER UTILITIES,

AND WASTE WATER UTILITIES. ANY DAMAGE TO THESE

FACILITIES SHALL BE REPAIRED AT NO COST TO THE OWNER.

EXISTING UTILITY & PIPELINE NOTES:

1. 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 UTILITIES

PRIOR TO CONSTRUCTION. CONTRACTOR SHALL PROTECT

EXISTING UTILITIES DURING CONSTRUCTION AND SHALL REPAIR

ALL DAMAGES TO SAID UTILITIES AT NO EXPENSE TO THE

OWNER.

2. CONTRACTOR SHALL VERIFY LOCATION OF UNDERGROUND

UTILITY LINES AND SHALL NOTIFY THE FOLLOWING AGENCY 48

HOURS PRIOR TO EXCAVATING NEAR EXISTING FACILITIES:

NATIONAL ONE-CALL 8-1-1

ENVIRONMENTAL NOTES:

1. IN THE EVENT THAT UNANTICIPATED ARCHEOLOGICAL DEPOSITS

ARE ENCOUNTERED DURING CONSTRUCTION, WORK IN THE

IMMEDIATE AREA WILL CEASE AND THE ENGINEER WILL CONTACT

PROFESSIONAL ARCHEOLOGISTS TO INITIATE POST-REVIEW

DISCOVERY PROCEDURES UNDER THE PROVISIONS OF 36 CRF

800.13.

2. IN THE EVENT THAT UNANTICIPATED HAZARDOUS MATERIALS

ARE ENCOUNTERED DURING CONSTRUCTION, WORK IN THE

IMMEDIATE AREA WILL CEASE AND THE ENGINEER WILL BE

NOTIFIED.

3. STOCKPILES AND STAGING AREAS WILL NOT BE PLACED WITHIN

ANY WATER OF THE UNITED STATES, INCLUDING WETLANDS.

4. HAZARDOUS WASTE: ALL SPILLS MUST BE REPORTED

IMMEDIATELY TO THE PROJECT MANAGER.

SUMMARY OF QUANTITIES

Item 1: Mobilization, Temporary Access and Erosion/Sedimentation Control Measures

Item Spec. Estimated Actual No. No. Description Units Quantity Quantity

1.01 C-105 Mobilization and SW3P Permitting LS 1

1.02 C-100 Contractor Quality Control Program LS 1

1.03 … Barricades and Markings for Pavement Closures LS 1

1.04 C-102 Temporary Sediment Control Fence LF 858

1.05 … Construction Entrance LS 1

Item 2: Runway Pavement Rehabilitation Item Spec. Estimated Actual No. No. Description Units Quantity Quantity

2.01 TxDOT 105-7001 Remove Asphalt Pavement (0" - 0.5") SY 19,735

2.02 TxDOT 105-7001 Remove Asphalt Pavement (2") SY 313

2.03 TxDOT 216 Proof Rolling HR 8

2.04 TxDOT 351 Flexible Pavement Structure Repair (6") SY 1,974

2.05 TxDOT 310 Prime Coat (AE-P) (0.2 GAL/1 SY) GAL 4,010

2.06 TxDOT 341-D

"Asphalt Mix Pavement Surface Course - TxDOT Item 341, Type DG-D (2"" TYP.)" TON 2,219

2.07 T-901 Seeding AC 2

2.08 P-152 Excavation and Embankment CY 20

Item 3: Apron and Taxiway Pavement Rehabilitation Item Spec. Estimated Actual No. No. Description Units Quantity Quantity

3.01 P-101 Prepare Surface; Remove Sealant, Markings SY 4,020

3.02 P-101 Clean, Prepare Joints for Sealing LF 1,114

3.03 P-605 Joint Sealants for Pavements LF 1,114

3.04 P-629 Thermoplastic Coal Tar Emulsion Surface Treatment (Sand Slurry Seal) SY 4,020

Item 4: Runway, Taxiway, and Apron Pavement Markings Item Spec. Estimated Actual No. No. Description Units Quantity Quantity

4.01 P-620 Reflective Pavement Markings - White SF 16,940

4.02 P-620 Reflective Pavement Markings - Yellow SF 2,670

4.03 P-620 Non-Reflective Pavement Markings - Black SF 6,990

4.04 P-621 Non-Reflective Pavement Markings - Green SF 757

4.05 P-620 Temporary Pavement Markings - White SF 16,940

1 ADDENDUM 1 6/4/26

6/3/2026

SCALE:01

PROPOSED RUNWAY CROSS

SECTION

N/A

NOTES:

1. SURFACE TREATMENT SHALL BE THERMOPLASTIC COAL TAR EMULSION (SAND SLURRY SEAL)

SURFACE TREATMENT MEETING FAA ITEM P-629 SPECIFICATIONS.

2. PREPARATION FOR P-629 SURFACE TREATMENT MUST MEET THE MANUFACTURER’S SPECIFICATIONS AND PROJECT TECHNICAL SPECIFICATIONS. CONTRACTOR SHALL PROVIDE WRITTEN CONFIRMATION

OF SURFACE READINESS BEFORE RESEALING BEGINS.

3. CONTRACTOR SHALL VERIFY ALL SURFACE SEALANT REMOVAL AND CLEANING METHODS WITH THE ENGINEER BEFORE STARTING WORK. SAMPLE TEST SECTIONS MAY BE REQUIRED FOR APPROVAL.

SCALE:02

PROPOSED SURFACE TREATMENT

DETAIL

N/A

EXISTING

HOT MIX ASPHALTIC CONCRETE (HMAC)

PROPOSED P-629 THERMOPLASTIC COAL TAR

EMULSION (SAND SLURRY SEAL) COAT1% TO 2% CROSS SLOPE

3% TO 5%

10'

60'

1.5% TO 5%

NOTES:

1. HMAC SHALL BE TXDOT ITEM 341, TYPE DG-D, COMPACTED TO BETWEEN 92% AND 97% OF THE PAVEMENT'S RICE SPECIFIC GRAVITY. HMAC SHALL HAVE A PERFORMANCE GRADE OF PG 64-22.

2. ANY REPAIRS NECESSARY TO THE BASE COURSE, AFTER REMOVAL OF THE EXISTING SURFACE

COURSE, SHALL BE PERFORMED THROUGH ITEM TXDOT 351 - FLEXIBLE PAVEMENT STRUCTURE

REPAIR AND SHALL UTILIZE COMPACTED BASE / CRUSHED LIMESTONE PER TxDOT ITEM 247, TYPE A, GRADE 1-2 COMPACTED TO AT LEAST 95% STANDARD PROCTOR DENSITY AT A MOISTURE CONTENT

WITHIN ±2% POINTS OF THE OPTIMUM MOISTURE CONTENT.

3. ENSURE LONGITUDINAL RUNWAY GRADE DOES NOT EXCEED ±2%. ENSURE THE GROUND AT THE END

OF THE RUNWAY HAS A SLOPE OF 0% TO 3% DOWNWARDS.

4. CONSTRUCT A 1.5" ± 0.5" DROP BETWEEN PAVED AND UNPAVED SURFACES.

TxDOT 310: PRIME COAT (AE-P) (0.2 GAL/SY)

PROOF ROLL EXISTING BASE

EXISTING SUBGRADE

25'

1.5"

TxDOT 341-D: ASPHALT SURFACE COURSE (2")

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MARK REVISION DATE

LATEST REVISION:

DRAWN BY:

DESIGNED BY:

JOB NO.

06/03/2026

BS

JWD

15F2501D

Sheet No.

Seal:

Centurion Planning and Design 19 W. Beauregard Ave San Angelo, TX 76903

Phone No. (325) 757-1001 Firm No. 19840

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120' RSA

2"

8"

3-4"

0.5"

3-4"

2"

8"

2"

1% TO 2% CROSS SLOPE

LESS THAN 1.5% SLOPE

1% TO 2% CROSS SLOPE

LESS THAN 1.5% SLOPE

EXISTING PAVEMENT ELEVATION

SCALE:03

EXISTING RUNWAY-TAXIWAY

CONNECTION

N/A SCALE:04

PROPOSED RUNWAY-TAXIWAY

CONNECTION

N/A

NOTES:

1. HMAC SHALL BE TXDOT ITEM 341, TYPE DG-D, COMPACTED TO BETWEEN 92% AND 97% OF THE PAVEMENT'S RICE SPECIFIC GRAVITY. HMAC SHALL HAVE

A PERFORMANCE GRADE OF PG 64-22.

2. ANY REPAIRS NECESSARY TO THE BASE COURSE, AFTER REMOVAL OF THE EXISTING SURFACE COURSE, SHALL BE PERFORMED THROUGH ITEM TXDOT 351 - FLEXIBLE PAVEMENT STRUCTURE REPAIR AND SHALL UTILIZE COMPACTED BASE / CRUSHED LIMESTONE PER TxDOT ITEM 247, TYPE A, GRADE 1-2 COMPACTED TO AT LEAST 95% STANDARD PROCTOR DENSITY AT A MOISTURE CONTENT WITHIN ±2% POINTS OF THE OPTIMUM MOISTURE CONTENT.

3. ENSURE TRANSVERSE RUNWAY GRADE IS BETWEEN 1 AND 2%. ENSURE LONGITUDINAL TAXIWAY GRADE IS LESS THAN 1.5%. ENSURE TRANSVERSE

TAXIWAY GRADE IS BETWEEN 1 AND 1.5%

4. ELEVATIONS AND RELATIVE SLOPES SHOWN ON THIS DETAIL ARE FOR REFERENCE ONLY. ACTUAL CONDITIONS TO BE FIELD DETERMINED BY

CONNECTING PROPOSED RUNWAY TO EXISTING TAXIWAY GRADE.

NOTES:

1. ELEVATIONS AND RELATIVE SLOPES SHOWN ON THIS DETAIL ARE FOR REFERENCE ONLY. ACTUAL

CONDITIONS TO BE FIELD DETERMINED.

SAWCUT ACCORDING TO

SHEET C-009 AT PAVEMENT

RECONNECTION POINT

15'

1 ADDENDUM 1 6/4/26

6/3/2026