Amendment 0010 P-993 Updated Dwgs Specs Geotech Report.pdf

CONTINUATION SHEET

These revised drawings accompany this amendment.

(P993) 01 57 19.01 20

Contamination laboratory results added.

(P993) 01 57 19

Delete section 1.1.1.1.5. LUC plans are not required.

(P993) 09 97 13.16

Removed references to SSPC QS 1. Removed references to Certified Industrial Hygienist and

Qualifications of Coating Contractors.

(P993) 09 97 13.27

Removed references to SSPC QS 1. Removed references to Qualifications of Coating Contractors.

(P993) 31 00 00

Part 2.1b. revised to allow a maximum of 20 percent passing the No. 200 sieve.

(P993) 33 16 15

Corrected Seismic Design Category to B.

(P993) 41 22 13-55

Replace Specification in its entirety. Added Runway Conductor Bar description.

(P993) C-002

Note #21 to be updated “FIGURES PROVIDED BY NAVFAC DEPICT THE POTENTIAL FOR PFAS

TO THE NORTH AND NORTHWEST OF THE P933 BUILDING SITE. WHILE THE PROJECT IS

NOT WITHIN A KNOWN AREA OF CONTAMINATION (OR OPERATING UNIT, OU), THE

POTENTIAL EXISTS FOR ENCOUNTERING PFAS IMPACTED SOILS AND GROUNDWATER IN

BOTH KNOWN AND UNKNOWN LOCATIONS. CONTRACTOR SHALL NOTIFY CHERRY POINT

ENVIRONMENTAL IF ANY POTENTIAL CONTAMINATION IS ENCOUNTERED. AND SUBMIT A

LAND USE CONTROL PLAN (LUC).”

(P993) CU004

Changed water service to Node building yard hydrant to black

(P993) CU115

Keynote 5 - water service to Node building yard hydrant changed to 2"

(P993) CU202

Corrected OWS-3 Label. Adjusted invert in on SS18.

(P993) CU220

Corrected OWS-1 Label. Corrected IW04 and IW05 rim elevations.

(P993) CU240

Corrected Sta 9+96 blowoff size to 4"

(P993) CU242

Correct Sta 13+10 blowoff size to 4"

(P993) CU620

Corrected IW04 and IW05 rim elevations and IW04 type.

(P993) CU630

Corrected fittings W29 and W30 to yard hydrant.

(P993) CU700

Changed water service to 2". Correct electrical equipment locations.

(P993) CU701

Change bypass to below ground.

(P993) CU801

Add size label to 12" overflow pipe.

(P993) ES114

Correct electrical equipment locations.

(P993) EP403

Elevator receptacles updated per UFC 3-490-06 section 6-3.

CUI

REPORT OF

GEOTECHNICAL

EXPLORATION

P-993

F-35 Sustainment Center MCAS Cherry Point, Havelock, NC

Prepared for

HDR

Charlotte, North Carolina

October 20, 2025

2712 Southern Boulevard, Suite 101 Virginia Beach, VA 23452

(757) 463-3200 www.geronline.com

October 20, 2025

HDR

440 S. Church Street, Suite 1200

Charlotte, NC 28202-2075

Attention: Nick Overby, PE, PMP, MBA Federal Project Manager

Subject: (U) Report of Geotechnical Exploration

FY2022 MCON PROJECT P-993

F-35 Sustainment Center MCAS Cherry Point, Havelock, NC

GER Project No. 110-8222

GeoEnvironmental Resources, Inc. is pleased to present this geotechnical investigation report for the project referenced above. Our services were performed per our proposal P24-110-7944 R16.

We appreciate the opportunity to continue serving as your geotechnical consultant on this project and look forward to your contact at your convenience with any questions regarding this letter or the project in general.

Sincerely, GeoEnvironmental Resources, Inc.

Ryan Prosser Charles Downey, EIT Geotechnical Engineer Senior Geotechnical Engineer

Scott A. Barnhill, P.E.

Executive Vice President

P-993 F-35 Sustainment Center October 20, 2025, MCAS Cherry Point, NC GER Project 110-8222 CUI

We recommend that the Contractor determine the actual groundwater levels at the time of construction to determine the impact of groundwater on construction procedures.

4.0 Laboratory Testing

4.1 Soils Engineering Properties

Geotechnical laboratory testing on samples obtained from our borings consisted of the following:

• 79 moisture content (ASTM D2216),

• 74 sieve analysis (ASTM D6913),

• 74 #200 Wash (ASTM D1140),

• 66 Atterberg Limits (ASTM D4318),

• 2 NCDOT Hydrometer

• 7 CBR’s (ASTM D1883),

• 4 Unconfined Compression (ASTM D2166),

• 4 Consolidation (ASTM D2435) tests, and

• 2 corrosivity tests (pH, Resistivity, and Oxidation Reduction).

The results of these tests are provided in the Appendix section of this report, and commentary on corrosivity testing is provided below.

Two (2) composite soil samples were collected from the P-993 site (borings B-1 and B-2) for laboratory analysis of corrosivity parameters. The composite samples were near-surface soils collected from the surface to a depth of four feet. The soil samples were transported to our laboratory for analysis of the following parameters. The following two tables provide analysis results and potential corrosivity scales.

4.2 Soils Chemical Testing

Two composite soil samples were collected for the following chemical environmental analyses: TAL Metals, TCL Volatiles, TCL Semi-volatiles, PCBs, Pesticides, Herbicides, and TPH-DRO & GRO using the appropriate EPA SW-846 method. In addition, the composite samples were analyzed for PFAS in accordance with the most recent version of DoD QSM. The purpose of the chemical environmental analyses was to assess the soils for excavated soil management, appropriate offsite disposal facilities, and the ability to reuse soils on-site. The full results are provided in the laboratory analytical results reports. A summary of the analytical

0 - 2 Acidic-Highly Corrosive > 100 Non Corrosive > 20,000 Non Corrosive

2 - 4 Acidic- Corrosive 50 - 100 Mildly Corrosive 10,000-20,000 Mildly Corrosive

4 - 6.5 Acidic-Mildly Corrosive 0 - 50 Mildly Corrosive 5,000 - 10,000 Moderately Corrosive

6.5 - 7.5 Neutral-Non Corrosive -5 - 0 Corrosive 3,000 - 5,000 Corrosive

7.5 - 8.5 Alkali-Non Corrosive 1,000 - 3,000 Highly Corrosive

> 8.5 Alkali- Mildly Corrosive < 1,000 Extremely Corrosive

Relative Corrosion Potential Ratings pH REDOX (mV) Resistivity (ohm-m)

Boring Depth (ft.) Sample Type USCS pH Redox

(mV) Resistivity (ohm-cm)

B-1 1 to 4 Composite SC-SM 7.12 144 48,840

B-2 1 to 4 Composite SM 3.32 306 57,180

Summary Table-Corrosivity Testing of Composite Samples

P-993 F-35 Sustainment Center October 20, 2025, MCAS Cherry Point, NC GER Project 110-8222 CUI results for positive detects only is provided in the table on the following page.

As discussed above, the purpose of the chemical environmental analyses was to assess the soils for excavated soil management and identify appropriate offsite disposal facilities and the ability to reuse soils on-site.

Offsite Disposal: Offsite disposal is generally conducted by disposal at a permitted landfill and is regulated under local, Federal, and State Solid Waste Management regulations. In general, the results indicate that soils generated for disposal would not likely be characterized as hazardous waste and could be disposed of in a landfill.

On-site reuse: The soils may potentially be reused on-site. However, there are specific requirements and restrictions for on-site management and reuse, such as protection of sensitive environments, protection of residential and other high exposure frequency receptors, protection of commercial/industrial workers, etc., and general restrictions that must be observed when reuse of potentially contaminated soil is considered

Analytical Parameter Analytical Method Volatile Organic Compounds (VOC) SW846 8260D Semivolatile Organic Compounds (SVOC) SW846 8270E Total Petroleum Hydrocarbons-Gasoline Range Organics (TPH-GRO) SW846 8015D GRO Total Petroleum Hydrocarbons-Diesel Range Organics (TPH-DRO) SW846 8015D DRO Organochlorine Pesticides SW846 8081B Polychlorinated Biphenyls (PCBs) SW846 8082A Per- and Polyfluoroalkyl Substances (PFAS) EPA Draft-4 1633 Dioxins and Furans SW846 8290A Metals SW846 6020B/7471B Chloride SW846 9056A Sulfate SW846 9056A

Table of Analytical Parameters and Methods

SW846 8015D Total Petroleum Hydrocarbons GRO & DRO

Detection Limit DL Result1 Qualifier2 Result1 Qualifier2

Gasoline Range Organics GRO (1C) (mg/Kg)

0.39 ND 0.64 J, D, cn

Diesel Range Organics DRO (C10-C28) (1C) (mg/Kg)

5.6 ND 11 J, M

EPA Draft-4 1633 - Per- and Polyfluoroalkyl Substances

Perfluorobutanoic acid (PFBA) (ng/g)

0.21 0.22 J, D ND

SW846 6020B – Metals/ 7471B - TAL Metals (total metals)

Barium (mg/L)

0.00746 0.158 B, cn 0.136 B, cn

Lead (mg/L)

0.0012 ND 0.00696

SW846 9056A - Anions Sulfate (mg/Kg)

38 40 J, D 120 J,D cn= Refer to case narative for further details.

2. Qualifiers:

D= The reported value is from a dilution

1. Results: ND= Not Detected, NA= Not Analyzed/applicable.

J= Results less than RL(Reporting Limit) but greater than or equal to MDL (Method detection Limit) and the concentration is an approximate

M= Manual Integration Compound

B= Blank Contaimination. The analyte was detected above one-half the reporting limit in an associated blank.

B-1 (1-4) B-2 (1-4)

Soil Screening Analytical Results Summary Table, Detected Analytes only

NAVFAC P993 F-35 Sustainment Center Contract No. N40085-18-D-0601 Task Order No. N40085-20-F-4290

SECTION 09 97 13.16

INTERIOR COATING OF WELDED STEEL WATER TANKS

05/11, CHG 2: 08/19

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D3276 (2015; E 2016) Standard Guide for Painting Inspectors (Metal Substrates)

ASTM D3925 (2002; R 2015) Sampling Liquid Paints and Related Pigmented Coatings

ASTM D4285 (1983; R 2018) Indicating Oil or Water in Compressed Air

ASTM D7127 (2017) Standard Test Method for Measurement of Surface Roughness of Abrasive Blast Cleaned Metal Surfaces using a Portable Stylus Instrument

NACE INTERNATIONAL (NACE)

NACE SP0188 (2024) Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

NSF INTERNATIONAL (NSF)

NSF/ANSI/CAN 61 (2024) Drinking Water System Components - Health Effects

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC 7/NACE No.4 (2007) Brush-Off Blast Cleaning

SSPC Guide 12 (2023) Guide for Illumination of Industrial Painting Projects

SSPC PA 1 (2024) Shop, Field, and Maintenance Coating of Metals

SSPC PA 2 (2015; E 2018) Procedure for Determining Conformance to Dry Coating Thickness Requirements

SSPC QP 1 (2019) Standard Procedure for Evaluating the Qualifications of Industrial/Marine Painting Contractors (Field Application to Complex Industrial Steel Structures and Other Metal Components)

SECTION 09 97 13.16 Page 1 Final Design Submittal

SSPC QP 5 (2022) Standard Procedure for Evaluating the Qualifications of Coating and Lining Inspection Companies

SSPC QS 1 (2015) Standard Procedure for Evaluating a Contractor's Advanced Quality Management System

SSPC SP 1 (2015) Solvent Cleaning

SSPC SP 10/NACE No. 2 (2015) Near-White Blast Cleaning

SSPC SP COM (2016; E 2017) Surface Preparation Commentary for Steel and Concrete Substrates

SSPC VIS 1 (2002; E 2004) Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast Cleaning

SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE)

SAE AMS-STD-595A (2017) Colors used in Government Procurement

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-DTL-24441 (2009; Rev D; Notice 1 2021) Paint, Epoxy-Polyamide, General Specification for

MIL-DTL-24441/29 (2009; Rev B; Notice 1 2021) Paint, Epoxy-Polyamide, Green Primer, Formula 150, Type IV

MIL-DTL-24441/31 (2009; Rev B; Notice 1 2021) Paint, Epoxy-Polyamide, White, Formula 152, Type

IV

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.134 Respiratory Protection

29 CFR 1910.1000 Air Contaminants

29 CFR 1926.59 Hazard Communication

1.2 DEFINITIONS

Definitions are provided throughout this Section, generally in the paragraph where used, and denoted by capital letters. The following definitions are used throughout this Section:

a. CEILING - interior tank surfaces that extend from the horizontal plane at the designated maximum water line upward, including the upper portion of the tank shell (walls), columns, structural steel, the underside of the roof plates and other steel components in this area.

b. BOWL - interior tank surfaces that extend from the horizontal plane at

SECTION 09 97 13.16 Page 2 the designated maximum water line downward, including the tank walls, columns, piping, pipe supports, bottom plates, and other steel components in this area.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-05, Design Data

Environmental Control System

SD-06 Test Reports

Inspection Report Forms

Daily Inspection Reports

SD-07 Certificates

Contract Errors, Omissions, and Other Discrepancies

Corrective Action Procedures

Coating Work Plan

Qualifications Of Individuals Performing Abrasive Blasting

Qualifications of Certified Protective Coatings Specialist (PCS)

Qualifications of Coating Inspection Company

Qualifications of QC Specialist Coating Inspector

Roof Joint Sealant Materials

Roof Joint Sealant Compatibility

Epoxy Coating Materials

SD-08 Manufacturer's Instructions

Roof Joint Sealant Instructions

Coating System Instructions

SD-11 Closeout Submittals

Disposal of Used Abrasive ; G

Inspection Logbook ; G

SECTION 09 97 13.16 Page 3

1.4 QUALITY ASSURANCE

1.4.1 Contract Errors, Omissions, and Other Discrepancies

Submit all errors, omissions, and other discrepancies in contract documents the Contracting Officer within 30 days of contract award for all work covered in this Section, other than the work that will not be uncovered until a later date. All such discrepancies shall be addressed and resolved, and the Coating Work Plan modified, prior to beginning the Initial and Follow-Up phases of work. Discrepancies that become apparent only after work is uncovered shall be identified at the earliest discoverable time and submitted for resolution. Schedule time (Float) should be built into the project schedule at those points where old work is to be uncovered or where access is not available during the first 30 days after award, to allow for resolution of contract discrepancies.

1.4.2 Corrective Action (CA)

CA shall be included in the Quality Control Plan.

1.4.2.1 Corrective Action Procedures

Develop procedures for determining the root cause of each non-compliance, developing a plan to eliminate the root cause so that the non-compliance does not recur, and following up to ensure that the root cause was eliminated. Develop Corrective Action Request (CAR) forms for initiating CA, and for tracking and documenting each step.

1.4.2.2 Implement Corrective Action

The Contractor shall take action to identify and eliminate the root cause of each non-compliance so as to prevent recurrence. These procedures shall apply to non-compliance in the work, and to non-compliance in the QC System. Corrective actions shall be appropriate to the effects of the non-compliance encountered. Each CAR shall be serialized, tracked in a Log to completion and acceptance by the Contracting Officer, and retained in project records. The Corrective Action Log, showing status of each CAR, shall be submitted to the Contracting Officer monthly. A CAR may be initiated by either the Contractor or the Contracting Officer. The Contracting Officer must approve each CAR at the root cause identification stage, the plan for elimination stage, and the close out stage after verification that the root cause has been eliminated.

1.4.3 Coating Work Plan

This work plan shall be considered as part of the Quality Control Plan.

Provide procedures for reviewing contract documents immediately after award to identify errors, omissions, and discrepancies so that any such issues can be resolved prior to project planning and development of detailed procedures.

Provide procedures for verification of key processes during Initial Phase to ensure that contract requirements can be met. Key processes shall include surface preparation, coating application and curing, inspection, and documentation, and any other process that might adversely impact orderly progression of work.

Provide procedures for all phases of coating operations, including planned

SECTION 09 97 13.16 Page 4 work, rework, repair, inspection, and documentation. Address mobilization and setup, surface preparation, coating application, coating initial cure, tracking and correction of non-compliant work, and demobilization.

Coordinate work processes with health and safety plans and confined space entry plans. For each process, provide procedures that include appropriate work instructions, material and equipment requirements, personnel qualifications, controls, and process verification procedures.

Provide procedures for inspecting work to verify and document compliance with contract requirements, including inspection forms and checklists, and acceptance and rejection criteria.

Provide procedures for correcting non-compliant work. Detailed procedures are required in advance to avoid delays in meeting overcoat windows as well as to avoid delays in production. Provide procedures for repairing defects in the coating film, such as runs, drips, sags, holidays, overspray, as well as how to correct coating thickness non-compliance, any other areas of repair or rework that might be adversely affected by delays in preparing and approving new procedures.

If a procedure is based on a proposed or approved request for deviation, the deviation shall be referenced. Changes to procedures shall be noted by submittal number and date approved, clearly delineating old requirements and new requirements, so that the records provide a continuous log of requirements and procedures.

1.4.4 Design Data

1.4.4.1 Environmental Control System

Submit design details of the proposed environmental control system to include ventilation, humidity control, and temperature regulation.

Provide calculations for humidity control during separate surface preparation and coating application procedures, ventilation requirements during coating application, and maximum allowable coating application rates to coincide with ventilation. Include basis of design data on local conditions. Provide equipment layout sketches and procedures showing function of each piece of equipment and fail-safe measures.

1.4.5 Qualifications

1.4.5.1 Qualifications of Certified Protective Coatings Specialist (PCS)

Submit name, address, telephone number, FAX number, and e-mail address of the independent third party PCS. Submit documentation that specialist is certified by SSPC: The Society for Protective Coatings (SSPC) as a PCS, including certification number and date of certification/recertification.

If the PCS is employed by the same coating inspection company to which the coating inspector is employed, this does not violate the independent third-party requirements. The PCS shall remain certified during the entire project, and the Contracting Officer shall be notified of any change in certification status within 10 days of the change. The PCS shall not be the designated coating inspector.

1.4.5.2 Qualifications of Coating Inspection Company

Submit documentation that the coating inspection company that will be performing all coating inspection functions is certified by SSPC to the requirements of SSPC QP 5 prior to contract award, and shall remain certified while accomplishing any coating inspection functions. The

SECTION 09 97 13.16 Page 5 coating inspection company must remain so certified for the duration of the project. If a coating inspection company's certification expires, the firm will not be allowed to perform any inspection functions, and all surface preparation and coating application work must stop, until the certification is reissued. Requests for extension of time for any delay to the completion of the project due to an inactive certification will not be considered and liquidated damages will apply. Notify the Contracting Officer of any change in coating inspection company certification status.

1.4.5.3 Qualifications of QC Specialist Coating Inspector

Submit documentation that each coating inspector is employed, and qualified to SSPC QP 5 , Level III, by the selected coating inspection company. Each inspector shall remain employed by the coating inspection company while performing any coating inspection functions.

1.4.5.4 Qualifications Of Individuals Performing Abrasive Blasting

Submit name, address, and telephone number of each person that will be performing abrasive blasting. Submit documentation that each blaster is qualified by SSPC to the SSPC C-7 Dry Abrasive Blaster Qualification Program. Each blaster shall remain qualified during the entire period of abrasive blasting, and the Contracting Officer shall be notified of any change in qualification status.

1.4.5.5 Roof Joint Sealant Materials

Provide manufacturer's certification of conformance to contract requirements, and is certified in accordance with NSF/ANSI/CAN 61 .

1.4.5.6 Roof Joint Sealant Compatibility

Provide manufacturer's certification that the selected joint sealant is compatible with the epoxy primer and is suitable for application directly to prepared steel surfaces.

1.4.5.7 Epoxy Coating Materials

Provide manufacturer's certification that the epoxy lining materials are certified in accordance with NSF/ANSI/CAN 61 for tanks of the size being coated.

1.5 PRODUCT DATA

1.5.1 Roof Joint Sealant Instructions

Submit manufacturer's printed instructions including detailed mixing and application procedures, minimum and maximum application temperatures, and curing procedures. Include Safety Data Sheets (SDS) for materials to be used at the job site in accordance with 29 CFR 1926.59 .

1.5.2 Coating System Instructions

Submit manufacturer's printed instructions including detailed mixing and application procedures, number and types of coats required, minimum and maximum application temperatures, and curing procedures. Include Safety Data Sheets (SDS) for materials to be used at the job site in accordance with 29 CFR 1926.59 .

SECTION 09 97 13.16 Page 6

1.6 DELIVERY AND STORAGE

Ship, store, and handle materials in accordance with SSPC PA 1 , and as modified in this Section. Maintain temperature in storage spaces between 40 and 75 degrees F , and air temperature more than 5 degrees F above the dew-point at all times. Inspect materials for damage and return non-compliant materials to manufacturer. Remove materials with expired shelf life from government property immediately and notify the Contracting Officer. Expired materials may be returned to manufacturer, tested, and if compliant, issued a shelf life extension.

If materials are approaching shelf life expiration and an extension is desired, samples may be sent to the manufacturer, along with complete records of storage conditions, with a request for shelf life extension.

If the manufacturer finds the samples and storage data suitable for shelf life extension, the manufacturer may issue an extension, referencing the product evaluation and the review of storage records. Products may not be extended longer than allowed in the product specification.

1.7 COATING HAZARDS

Ensure that employees are trained in all aspects of the safety plan.

Specified coatings may have potential health hazards if ingested or improperly handled. The coating manufacturer's written safety precautions shall be followed throughout mixing, application, and curing of the coatings. During tank cleaning, cleanup, surface preparation, and paint application phases, ensure that employees are protected from toxic and hazardous chemical agents which exceed concentrations in 29 CFR 1910.1000 .

Comply with respiratory protection requirements in 29 CFR 1910.134 . The CIH shall approve work procedures and personal protective equipment.

1.8 WORK SEQUENCE

Coat tank interior following leak testing.

1.9 JOB SITE REFERENCES

Make available to the Contracting Officer at least one copy each of

ASTM D3276, ASTM D3925, ASTM D4285, ASTM D7127, NACE SP0188, SSPC SP COM,

SSPC SP 1 , SSPC 7/NACE No.4 , SSPC SP 10/NACE No. 2 , SSPC PA 1 , SSPC PA 2 , SSPC Guide 12 , SSPC VIS 1 , , SSPC QP 1 , SSPC QS 1 , and an SSPC Certified Contractor Evaluation Form at the job site.

PART 2 PRODUCTS

2.1 ROOF JOINT SEALANT

Industrial grade, two component, minimum 95 percent solids by volume, polysulfide type caulking material that has a minimum history of 10 years acceptable service in water tanks. Sealant shall be compatible with the epoxy primer and suitable for direct application to prepared steel surfaces. Sealant shall contain no more than 0.06 percent by dry weight Lead, no more than 0.06 percent by dry weight Cadmium, and no more than

0.00 percent by dry weight Chromium. Sealant shall be certified in accordance with NSF/ANSI/CAN 61 .

2.2 COATING SYSTEM

Alternate systems or products will not be considered. All primer, SECTION 09 97 13.16 Page 7 intermediate, and topcoat materials shall be manufactured by one manufacturer. The entire coating system is intended to be applied in the field. Alternatively, surface preparation may be accomplished in the shop, following all temperature, humidity, and testing requirements listed herein, followed by an application of a hold-primer. Upon completion of field fabrication, all shop-applied coatings shall be removed, surfaces prepared to SSPC SP 10/NACE No. 2 , and the specified coating system applied. Adjust all shop preparation to avoid conflicts with final surface preparation requirements.

2.2.1 NSF Certified Polyamide Epoxy Coating System

Select a commercially available, three coat polyamide epoxy coating system that is certified in accordance with NSF/ANSI/CAN 61 for contact with potable water in water storage tanks of the size being coated. The coating system shall be suitable for application in three even coats of 3-5 mils dry film thickness (DFT), for a total minimum of 9 mils DFT.

2.3 TEST KITS

2.3.1 Test Kit for Measuring Chloride, Sulfate and Nitrate Ions on Steel and Coated Surfaces

Provide test kits called CHLOR*TEST CSN Salts, as manufactured by CHLOR*RID International Inc. of Chandler, Arizona ( www.chlor-rid.com ) or equal. An "equal" test kit shall meet the following requirements:

a. Kit contains all materials,supplies, tools and instructions for field testing and on-site quantitative evaluation of chloride, sulfate and nitrate ions;

b. Kit extract solution is acidic, factory pre-measured, pre-packaged, and of uniform concentration;

c. Kit components and solutions are mercury free and environmentally friendly;

d. Kit contains new materials and solutions for each test extraction;

e. Extraction test container (vessel, sleeve, cell. etc.) creates a sealed, encapsulated environment during salt ion extraction;

f. Test extract container is suitable for testing the following steel surfaces: horizontal (up/down configuration), vertical, flat, curved, smooth, pitted, and rough;

g. All salt ion concentrations are directly measured in micrograms per square centimeter.

2.3.2 Test Kit for Identifying Amine Blush on Epoxy Surfaces

After coating and/or primer has hardened and prior to applying the next coat, test for unreacted amines using the AMINE BLUSH CHECK, manufactured by Elcometer, Rochester Hills, Michigan, or equal. To be considered for approval as an "equal" test kit it shall meet the following requirements:

a. Be a completely self-contained field test kit with all materials, supplies, tools and instructions to perform tests and indicate the presence of unreacted amines;

SECTION 09 97 13.16 Page 8

b. Use an identifiable, consistent, uniform, pre-packaged, factory pre-measured indicating solution;

c. Kit contains no mercury or lead and is environmentally friendly;

d. Kit contains a solution of an unreacted amine for the purpose of "self checking" the indicator solution;

2.4 ABRASIVE

Contractors are cautioned to verify that the chosen abrasive, along with work and storage processes, allow the final surface cleanliness requirements to be achieved. Successful testing of chlorides in abrasive does not negate the final acceptance testing of steel surfaces.

PART 3 EXECUTION

Perform all work, rework, and repair in accordance with approved procedures in the Coating Work Plan.

3.1 LIGHTING

Provide lighting for all work areas as prescribed in SSPC Guide 12 .

3.2 ENVIRONMENTAL CONDITIONS

3.2.1 Control System Requirements

Provide and utilize dehumidification and ventilation equipment to control humidity, temperature, and vapor levels in tank from beginning of abrasive blasting through coating application and for four days after the last coating is applied. System shall maintain vapor concentrations at or below 10 percent of Lower Explosive Limit (LEL). System may incorporate any combination of solid desiccant and direct expansion refrigeration equipment. No liquid, granular, calcium chloride, or lithium chloride drying systems will be accepted. Use only electric, indirect fired combustion, indirect friction, or steam coil auxiliary heaters. System shall be compatible with removal of dust and solvent vapors, and shall have fail-safe measures to ensure reliability during operations.

3.2.2 Automated Monitoring Requirements

Provide continuous monitoring of DH equipment, and temperature, relative humidity, and dew point data at pertinent points on the structure, during surface preparation, coating application, and initial cure. Locate sensors to provide pertinent data for the surface preparation and coat application being performed. Make data available to the Contracting Officer through Internet access. Provide monitoring equipment to perform as follows:

a. Data is collected in the field unit in one minute increments, and available for download (on-site) in a standard format. Contractor shall collect this data and make available to the Contracting Officer;

b. Monitoring equipment shall have backup power such that data collection and transmission to web server will be uninterrupted during the entire period of the dehumidification requirement;

SECTION 09 97 13.16 Page 9

c. Monitoring equipment shall have capability to measure surface temperatures at a minimum of four locations anywhere on a 150 foot diameter by 50 foot high tank;

d. Monitoring equipment shall have capability to measure interior and exterior dry bulb temperature (DB), relative humidity (RH), and dewpoint temperature (DP);

e. Data shall be available continuously through secure internet connection, using widely available web browsers;

f. Internet accessible data shall be collected and stored in maximum 15 minute increments, and lag time between data collection and online availability shall be no greater than 70 minutes;

g. Internet accessible data shall be available for viewing online in tabular format, and graphical format using selected data;

h. Internet accessible data shall be available for download in user-defined segments, or entire project to date, in a standard format usable by Microsoft Excel and other spreadsheet programs.

i. Internet-based controls shall provide alerts to pre-designated parties through email messaging;

j. Internet-based controls shall monitor data uploads from field unit and issue alert if data not initiated within 60 minutes of last upload;

k. Internet-based controls shall monitor operation of DH equipment and issues alert when power remains off for more than 15 seconds, or if pre-determined temperature, RH, or DP conditions are exceeded;

The requirements listed here were developed around the Munters Exactaire Monitoring System, as this was the only monitoring system having Internet connectivity known to be commercially available. There is no requirement for connectivity of the monitoring system to control the DH equipment, therefore, any combination of equipment having the required functionality will be accepted.

3.2.3 Humidity Control for Surface Preparation and Primer Application

Provide and utilize dehumidification equipment to maintain relative humidity at appropriate level to prevent prepared steel surfaces from corroding at all times during abrasive blasting through primer application. Failure of humidity control system, or failure to maintain proper conditions, during surface preparation stage may allow surface rusting, which will be rejected and require rework. All surfaces to be coated must meet all requirements at time of primer application. Failure of humidity control system during primer application stage will be cause for removal and replacement of all materials applied and cured while conditions were not as prescribed above.

3.2.4 Humidity Control for Application of Intermediate and Topcoats and Initial Curing

Provide and utilize dehumidification equipment to maintain relative humidity at the coldest steel surface in tank below 55 percent at all times during coating application, and during the first four days of initial curing after application of topcoat. This measurement is not the

SECTION 09 97 13.16 Page 10 same as measuring the relative humidity of ambient air in the tank, and will require either electronic equipment to monitor relative humidity at the steel surface, or complex calculations to convert relative humidity of air in tank to relative humidity at steel surface. An approved alternative method of monitoring dehumidification that requires less sophisticated equipment or calculations is to maintain a minimum dew point depression of 18 degrees F below coldest steel surface temperature. This is in lieu of specific relative humidity and dew point requirements in this Section. Failure to maintain specified humidity control during this phase will be cause for extension of humidity controlled cure time to ensure four consecutive days at specified relative humidity at steel surfaces. Formation of condensation in coating application stage prior to the indicated dry-hard time will be cause for removal and replacement of all materials contacted by condensation.

3.3 EQUIPMENT USED IN TANK

Equipment used in the tank after surface preparation begins shall not leave any oily residue from exhaust or other sources. Internal combustion driven equipment, other than that powered by natural or bottled gas, shall not be used.

3.4 SURFACES TO BE COATED

Prepare and coat interior tank surfaces, including CEILING, and BOWL piping, and all materials with potential to be in contact with water .

3.5 SURFACE PREPARATION

3.5.1 Abrasive Blasting Equipment

Use abrasive blasting equipment of conventional air, force-feed, or pressure type. Maintain a minimum pressure of 95 psig at nozzle. Confirm that air supply for abrasive blasting is free of oil and moisture when tested in accordance with ASTM D4285. Test air quality at each startup, but in no case less often than every five operating hours.

3.5.2 Operational Evaluation of Abrasive

Test abrasive for salt contamination and oil contamination as required by the appropriate abrasive specification daily at startup and every five operating hours thereafter.

3.5.3 Surface Standard

Inspect surfaces to be coated, and select plate with similar properties and surface characteristics for use as a surface standard. Blast clean one or more 1 foot square steel panels as specified in paragraph SURFACE PREPARATION. Record blast nozzle type and size, air pressure at nozzle and compressor, distance of nozzle from panel, and angle of blast to establish procedures for blast cleaning. Measure surface profile in accordance with ASTM D7127. When the surface standard complies with all specified requirements, seal with a clearcoat protectant. Use the surface standard for comparison to abrasive blasted surfaces throughout the course of work.

3.5.4 Pre-Preparation Testing for Surface Contamination

Perform testing, abrasive blasting, and testing in the prescribed order.

SECTION 09 97 13.16 Page 11

3.5.4.1 Pre-Preparation Testing for Oil and Grease Contamination

Inspect all surfaces for oil and/or grease contamination using two or more of the following inspection techniques: 1) Visual inspection, 2) WATER BREAK TEST, 3) BLACK LIGHT TEST, and 4) CLOTH RUB TEST. Reject oil and/or grease contaminated surfaces, clean in accordance with SSPC SP 1 , and recheck for contamination until surfaces are free of oil and grease.

WATER BREAK TEST - Spray atomized mist of distilled water onto surface, and observe for water beading. If water "wets" surface rather than beading up, surface can be considered free of oil or grease contamination. Beading of water (water forms droplets) is evidence of oil or grease contamination.

BLACK LIGHT TEST - Inspect surfaces for oil and grease contamination using the light specified in the paragraph BLACK LIGHT. Use light no more than 15 inches from surface unless testing indicates that the specific oil or grease found in tank fluoresce at a greater distance. Use light in tank that is completely sealed from light infiltration, under a hood, or at night. Any fluorescing on steel surfaces is indication of petroleum oil/grease contamination. Use either WATER BREAK TEST or CLOTH RUB TEST to confirm both contaminated and non-contaminated areas detected by BLACK LIGHT TEST. The BLACK LIGHT TEST may not be used during inspection of prepared surfaces for oil and grease contamination unless proven to fluoresce the oil and/or grease found in the specific tank and documented during testing prior to abrasive blasting. Generally, only petroleum oil/grease will fluoresce, however, some may not fluoresce sufficiently to be recognized and other methods, such as the WATER BREAK TEST or CLOTH RUB TEST, must be used to confirm findings of the BLACK LIGHT TEST.

CLOTH RUB TEST - Rub a clean, white, lint free, cotton cloth onto surface and observe for discoloration. To confirm oil or grease contamination in lightly stained areas, a non-staining solvent may be used to aid in oil or grease extraction. Any visible discoloration is evidence of oil or grease contamination.

3.5.4.2 Pre-Preparation Testing for Soluble Salts Contamination

Test surfaces for soluble salts, and wash as required, prior to abrasive blasting. Soluble salt testing is also required in paragraph PRE-APPLICATION TESTING FOR SOLUBLE SALTS CONTAMINATION as a final acceptance test of prepared surfaces after abrasive blasting, and successful completion of this phase does not negate that requirement.

This phase is recommended since pre-preparation testing and washing are generally more advantageous than attempting to remove soluble salt contamination after abrasive blasting. Effective removal of soluble salts will require removal of any barrier to the steel surface, including rust.

This procedure may necessitate combinations of wet abrasive blasting, high pressure water rinsing, and cleaning using a solution of water washing and soluble salts remover. The soluble salts remover shall be acidic, biodegradable, nontoxic, noncorrosive, and after application, will not interfere with primer adhesion. Delays between testing and preparation, or testing and coating application, may allow for the formation of new contamination. Use potable water, or potable water modified with soluble salt remover, for all washing or wet abrasive blasting. Test methods and equipment used in this phase are selected at the Contractor's discretion.

SECTION 09 97 13.16 Page 12

3.5.5 Abrasive Blasting

Abrasive blast steel surfaces to near-white metal in accordance with SSPC SP 10/NACE No. 2 . Prepared surfaces shall conform to SSPC VIS 1 and shall match the prepared test-panels. Provide a 2 to 3 mil surface profile. Reject profile greater than 3 mils , discontinue abrasive blasting, and modify processes and materials to provide the specified profile. Measure surface profile in accordance with ASTM D7127, using Rmax as the measure of profile height. Record all measurements required in this standard. Measure profile at rate of three tests for the first 1000 square feet plus one test for each additional 1000 square feet or part thereof. When surfaces are reblasted for any reason, retest profile as specified. Following abrasive blasting, remove dust and debris by vacuum cleaning. Do not attempt to wipe surface clean.

3.5.6 Disposal of Used Abrasive

Dispose of used abrasive off Government property in accordance with Federal, State and Local mandated regulations.

3.5.7 Pre-Application Testing For Surface Contamination

3.5.7.1 Pre-Application Testing for Oil and Grease Contamination

Ensure tank surfaces are free of contamination as described in paragraph

PRE-PREPARATION TESTING FOR OIL AND GREASE CONTAMINATION.

3.5.7.2 Pre-Application Testing for Soluble Salts Contamination

Test surfaces for chloride contamination using the Test Kit described in paragraph TEST KIT FOR MEASURING CHLORIDE, SULFATE AND NITRATE IONS ON STEEL AND COATED SURFACES. Test all surfaces at rate of three tests for the first 1000 square feet plus one test for each additional 2000 square feet or part thereof. Perform 30 percent of tests on bare steel at welds, divided equally between horizontal and vertical welds. One or more readings greater than nondetectable for chlorides, sulfates, or nitrates is evidence of soluble salt contamination. Reject contaminated surfaces, wash as discussed in paragraph PRE-PREPARATION TESTING FOR SOLUBLE SALTS CONTAMINATION, allow to dry, and re-test until all required tests show allowable results. Reblast tested areas using vacuum equipped blast equipment. Label all test tubes and retain for test verification.

3.5.7.3 Pre-Application Testing for Surface Cleanliness

Apply coatings to dust free surfaces. To test surfaces, apply strip of clear adhesive tape to surface and rub onto surface with finger. When removed, the tape should show little or no dust, blast abrasive, or other contaminant. Reject contaminated surfaces, clean by vacuum cleaning, and retest. Test surfaces at rate of three tests for the first 1000 square feet plus one test for each additional 1000 square feet or part thereof.

Provide two additional tests for each failed test or questionable test.

Attach test tapes to Daily Inspection Reports.

3.6 MIXING AND APPLICATION OF SEALANT AND COATING SYSTEM

3.6.1 Preparation of Sealant and Coating Materials for Application

Each of the different products, sealant, primer, intermediate, and topcoat, is a two-component material supplied in separate containers.

SECTION 09 97 13.16 Page 13

3.6.1.1 Mixing

Mix in accordance with manufacturer's instructions, which may differ for each product. Do not mix partial kits, or alter mix ratios. Mix materials in same temperature and humidity conditions specified in paragraph DELIVERY AND STORAGE. Allow mixed material to stand for the required induction time based on its temperature.

3.6.1.2 Pot Life

Apply mixed products within stated pot life for each product. Stop applying when material becomes difficult to apply in a smooth, uniform wet film. Do not add solvent to extend pot life. Add all required solvent at time of mixing. Pot life is based on standard conditions at 70 degrees F and 50 percent relative humidity. For every 18 degrees F rise in temperature, pot life is reduced by approximately half, and for every 18 degrees F drop, it is approximately doubled. Usable pot life depends on the temperature of the material at the time of mixing and the sustained temperature at the time of application. Other factors such as the shape of the container and volume of mixed material may also affect pot life.

In hot climates, precooling or exterior icing of components for at least 24 hours to a minimum of 50 degrees F will extend pot life. Following are approximate pot life times:

Sealant As specified by manufacturer Epoxy Primer and Intermediate Coat Materials 4 hours

3.6.1.3 Application Conditions and Recoat Windows

The application condition requirements for the coating system are very time and temperature sensitive, and are intended to avoid the delamination problems frequently found on industrial structures. Plan coating application to ensure that specified temperature, humidity, and condensation conditions are met. If conditions do not allow for orderly application of sealant, primer, stripe coat, intermediate coat and topcoat, use appropriate means of controlling air and surface temperatures, as required. Partial or total enclosures, insulation, heating or cooling, or other appropriate measures may be required to control conditions to allow for orderly application of all required coats.

Maintain air and steel surface temperature between 60 and 100 degrees F during application and the first four hours of cure for epoxy coats.

Maintain steel surface temperature more than 5 degrees F above the dew-point of the ambient air for the same period.

Use Table entitled "RECOAT WINDOWS" to determine appropriate recoat windows for each coat after the initial coat. Apply each coat during appropriate RECOAT WINDOW of preceding coat. If a RECOAT WINDOW is missed, the minimum and maximum primer and intermediate coat thickness may be adjusted to accommodate a FILL COAT, however, requirements for total epoxy coating thickness and total coating thickness will not be modified.

Missing more than one RECOAT WINDOW may require complete removal of coating if maximum total coating thickness requirements cannot be achieved.

If coating is not applied during RECOAT WINDOW, or if surface temperature exceeds 120 degrees F between applications, provide GLOSS REMOVAL, apply next coat within 24 hours. If next planned coat is topcoat, apply FILL COAT if required to fill sanding marks. Sanding marks from GLOSS REMOVAL

SECTION 09 97 13.16 Page 14 of intermediate coat reflecting through topcoat will be considered as non-compliant. Apply FILL COAT within 24 hours of GLOSS REMOVAL, then apply topcoat within RECOAT WINDOW of FILL COAT.

RECOAT WINDOWS

Temperature degrees F 60-70 71-80 81-90 91-100 101-110 111-120

RECOAT WINDOW (Hrs.) 24-72 18-60 16-48 12-36 8-18 8-18

The temperature ranges shown in the table above are for determining recoat windows. Choose recoat window based on the highest surface temperature that was sustained for one or more hours between coats. This applies to the entire time between coats. Measure and record air and surface temperatures on hourly basis to determine appropriate recoat windows. If surface temperature goes above 100 degrees F , measure and record temperatures every half hour.

FILL COAT - Where indicated, apply coat of intermediate coat epoxy, at 2 to 3 mils DFT, then apply next specified full coat within recoat window of FILL COAT. A FILL COAT may be used to adjust coating thickness to comply with requirements or to fill sanding marks in intermediate coat.

GLOSS REMOVAL - Where required, hand sand in a linear fashion to remove gloss using 120-200 grit wet/dry sandpaper, followed by solvent wiping with a clean rag soaked with denatured alcohol to remove all dust. GLOSS REMOVAL of primer coat is to scarify surface and shall consist of removal of approximately 1 mil of coating. If steel is exposed during GLOSS REMOVAL, repair in accordance with paragraph PROCEDURE FOR HOLIDAY AND SPOT REPAIRS OF NEWLY APPLIED COATING. GLOSS REMOVAL of intermediate coat may include removal of up to 3 mils of coating to avoid excess thickness, prior to application of FILL COAT.

3.6.2 Amine Blush Testing of Epoxy Coat Prior to Overcoating

Test epoxy surfaces prior to application of roof joint sealant, epoxy coat, or polyurethane topcoat for amine blush contamination using the Test Kit described in paragraph TEST KIT FOR IDENTIFYING AMINE BLUSH ON EPOXY SURFACES. Test all surfaces at rate of three tests for the first 1000 square feet plus one test for each additional 2000 square feet or part thereof. If one or more tests show positive results for amine blush contamination, either treat all surfaces using the approved amine blush removal procedure or increase testing to ensure that all contamination is located, and then treat identified contamination using the approved procedure.

3.6.3 Application of Coating System and Roof Joint Sealant

Apply coatings in accordance with SSPC PA 1 and as specified herein.

Apply sealant and coatings to surfaces that meet all stated surface preparation requirements.

After application of primer coat and prior to application of each subsequent coat, perform testing prescribed in paragraph PRE-APPLICATION TESTING FOR SURFACE CONTAMINATION, as necessary, to ensure minimal intercoat contamination. This testing may be reduced to one half of the prescribed rate for bare steel if the testing indicates no contamination

SECTION 09 97 13.16 Page 15 when sampling is evenly distributed over surfaces being tested. If contamination is found between coats, revert to the specified testing rate. Generally, oil and grease contamination and soluble salts contamination are not encountered if subsequent coats are applied within specified recoat windows and the quality of air entering tank is controlled. Concern for intercoat contamination should be continually prevalent, and spot testing should be accomplished to verify satisfactory conditions. Where visual examination or spot testing indicates contamination, perform sufficient testing to verify non-contamination, or to define extent of contamination for appropriate treatment.

Apply each coat in a consistent wet film, at 90 degrees to previous coat.

Ensure that primer and intermediate coat "cold joints" are no less than six inches from welds. Apply stripe coat by brush. For convenience, stripe coat material may be delivered by spray if followed immediately with brush-out and approved procedures include appropriate controls on thickness. Apply all other coats by spray application. Use appropriate controls to prevent airborne coating fog from drifting beyond 15 feet from the tank perimeter . The cleanliness, temperature, recoat windows, and airborne paint containment requirements may necessitate the use of portable shelters or other appropriate controls.

Apply coatings at the following specified thickness:

Coat Minimum DFT (Mils)

Maximum DFT (Mils)

Primer 3 5

Intermediate 3 5

Top 3 5

Total system 9 15

Measure coating thickness in accordance with SSPC PA 2 to confirm that coating application is within the specified range and within the tolerances of that standard. For non-compliant areas, increase number of test areas to identify all non-compliant application as required by SSPC PA 2 . Add coating as required to correct underruns, and remove coating with excess thickness to bare steel and reapply as specified in paragraph PROCEDURE FOR HOLIDAY AND SPOT REPAIRS OF NEWLY APPLIED

COATING.

3.6.3.1 Application of Roof Joint…