J-01 Specifications.pdf

SPECIFICATIONS

PROJECT 21CR201C6

CROW HOSPITAL UST REMOVAL

CROW/NORTHERN CHEYENNE HOSPITAL

CROW AGENCY, MT

MAY 2021

BILLINGS AREA INDIAN HEALTH SERVICE

DEPARTMENT OF HEALTH AND HUMAN SERVICES

Crow Hospital UST Removal SPECIFICATIONS Crow/Northern Cheyenne Hospital

Table of Contents

CONTENTS

SECTION 011000 - SUMMARY 1

SECTION 012100 - ALLOWANCES 3

SECTION 012200 - UNIT PRICES 4

SECTION 013300 - SUBMITTAL PROCEDURES 6

SECTION 024119 - SELECTIVE DEMOLITION 8

SECTION 026500 – UNDERGROUND STORAGE TANK REMOVAL AND DISPOSAL 10

SECTION 311000 - SITE CLEARING 14

SECTION 312000 - EARTHWORK 16

SECTION 321313 - CONCRETE PAVING 19

SECTION 321373 - CONCRETE PAVING JOINT SEALANTS 23

Section 011000 - Summary Page 1

SECTION 011000 - SUMMARY

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Project information.

2. Work covered by Contract Documents.

3. Work under Owner's separate contracts.

4. Contractor's use of site and premises.

5. Coordination with occupants.

6. Work restrictions.

1.2 PROJECT INFORMATION

A. Project Identification: Crow Hospital UST Removal, BI21CR201C6.

B. Owner: Billings Area Indian Health Service.

C. Engineer: Todd Rydquist, PE.

1.3 WORK COVERED BY CONTRACT DOCUMENTS

A. The Work of Project is defined by the Contract Documents and consists of removal and disposal of a 10,000 gallon Underground Storage Tank (UST) and associated piping and appurtenances, and restoration of the area to match preconstruction conditions.

B. Specific tasks to be performed include, but are not limited to the following:

1. Obtaining all necessary permits required to complete the Work.

2. Removal and storage of existing rock mulch as necessary to excavate tank area.

3. Removal and disposal of concrete pads and aprons associated with the UST installation.

4. Removal and disposal of concrete sidewalks as necessary to excavate tank area.

5. Removal and disposal of UST and all associated exterior piping, manholes, monitoring wells, venting, and other associated tank appurtenances. UST removal and disposal to be in compliance with all applicable federal and Tribal regulations and recommended removal standards.

6. Removal and disposal of irrigation laterals as necessary to complete the Work.

7. Removal and disposal of interior fuel oil piping, pumps, day tanks, gauges and other associated appurtenances within the building.

8. Performing all required sampling and obtaining testing required to meet all regulatory requirements.

9. Removal and disposal of soils determined to be contaminated beyond acceptable regulatory limits.

10. Backfill, compaction, and grading of excavation required for UST and contaminated soils removal.

Provision of imported fill as necessary to complete backfill.

11. Restoration of concrete sidewalks which were removed to excavate and remove UST, including provision of base as necessary.

12. Reinstallation of rock mulch removed for tank exploration and provision of mulch as required to fill disturbed areas and match existing conditions.

13. Installation of new weed barrier beneath decorative gravel.

1.4 CONTRACTOR'S USE OF SITE AND PREMISES

A. Restricted Use of Site: Contractor shall have limited use of Project site for construction operations as indicated on Drawings by the Contract limits and as indicated by requirements of this Section.

B. Limits on Use of Site: Limit use of Project site to Work in areas indicated. Do not disturb portions of Project site beyond areas in which the Work is indicated.

1. Limits on Use of Site: Confine construction operations to the area of the UST to be removed and areas designated for staging, parking, and equipment storage in the preconstruction meeting.

Section 011000 - Summary Page 2

2. Driveways, Walkways, and Entrances: Keep driveways, and entrances serving premises clear and available to Owner, Owner's employees, and emergency vehicles at all times. Do not use these areas for parking or for storage of materials.

C. Condition of Existing Grounds: Maintain portions of existing grounds, landscaping, and hardscaping affected by construction operations throughout construction period. Repair damage caused by construction operations.

1.5 COORDINATION WITH OCCUPANTS

A. Full Owner Occupancy: Owner will occupy site and existing buildings during entire construction period.

Cooperate with Owner during construction operations to minimize conflicts and facilitate Owner usage.

Perform the Work so as not to interfere with Owner's day-to-day operations. Maintain existing exits unless otherwise indicated.

1.6 WORK RESTRICTIONS

A. Comply with restrictions on construction operations.

1. Comply with limitations on use of public streets, work on public streets, rights of way, and other requirements of authorities having jurisdiction.

B. On-Site Work Hours: Limit work in the existing building to normal business working hours of 7 a.m. to 7 p.m., Monday through Friday, unless otherwise indicated.

C. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions and then only after providing temporary utility services according to requirements indicated:

1. Notify Facility Manager not less than two days in advance of proposed utility interruptions.

2. Obtain Facility Manager’s written permission before proceeding with utility interruptions.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

Section 012100 - Allowances Page 3

SECTION 012100 - ALLOWANCES

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes administrative and procedural requirements governing allowances.

B. Types of allowances include the following:

1. Quantity allowances.

2. Contingency allowances.

C. Related Requirements: Section 012200 "Unit Prices" for procedures for using unit prices, including adjustment of quantity allowances when applicable.

1.2 INFORMATIONAL SUBMITTALS

A. Submit invoices or delivery slips to show actual quantities of materials delivered to the site for use in fulfillment of each allowance.

B. Coordinate and process submittals for allowance items in same manner as for other portions of the Work.

1.3 ALLOWANCES – GENERAL REQUIREMENTS

A. Allowance shall include cost to Contractor of materials ordered and shall include taxes, freight, and delivery to Project site.

1.4 CONTINGENCY ALLOWANCES

A. Use the contingency allowance only as directed by Engineer and only by Change Orders that indicate amounts to be charged to the allowance.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 SCHEDULE OF ALLOWANCES

A. Allowance No. 1: Rock mulch removal and restoration: Include a quantity allowance for removal and restoration of 100 square yards of rock mulch.

B. Allowance No. 2: Sidewalk removal and restoration: Include a quantity allowance for 325 square feet of sidewalk removal and restoration.

C. Allowance No. 3: Excavation: Provide a quantity allowance for 250 cubic yards of excavation.

D. Allowance No. 4: Backfill with onsite soils: Provide a quantity allowance for 250 cubic yards of backfill with onsite soils.

E. Allowance No. 5: Imported Fill: Provide a quantity allowance for 120 cubic yards of imported fill.

F. Allowance No. 6: Contaminated soil handling and disposal: Provide a contingency allowance for 50 cubic yards of contaminated soil handling and disposal.

G. Allowance No. 7: Hydrocarbon soil tests: Provide a quantity allowance of 12 sets of hydrocarbon soil tests.

END OF SECTION 012100

Section 012200 - Unit Prices Page 4

SECTION 012200 - UNIT PRICES

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes administrative and procedural requirements for unit prices.

B. Related requirements: Coordinate unit prices allowance adjustment requirements in Section 012100

“Allowances.”

1.2 DEFINITIONS

A. Unit price is a price per unit of measurement for materials, equipment, or services, or a portion of the Work, added to or deducted from the Contract Sum by appropriate modification, if the scope of Work or estimated quantities of Work required by the Contract Documents are increased or decreased.

B. List of Unit Prices: A schedule of unit prices is included in Part 3.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 SCHEDULE OF UNIT PRICES

A. Unit Price No. 3: Rock Mulch removal and restoration.

1. Description: Remove and reinstall rock mulch to match existing conditions.

2. Unit of measurement: Square yards.

3. Specifications references: Section 312000, Articles 2.1, 2.2, 3.8.

4. Unit Price includes the following:

a. Removal and stockpiling existing rock mulch for reinstallation.

b. Removal and disposal of existing weed barrier.

c. Provision of new rock mulch for previously uncovered areas and existing rock mulch lost while stockpiling. It is assumed that up to 25% of installed rock mulch will be new material.

d. Mixing existing and new rock to mitigate possible differences in color, size, and shape of new and existing materials.

e. Installation of new weed barrier.

f. Placement of new rock mulch.

B. Unit Price No. 2: Sidewalk removal and restoration.

1. Description: Removal and restoration of sidewalk as necessary to complete the Work.

2. Unit of Measurement: Square feet.

3. Specification references: Sections 024119, 312000, 321313, 321373

4. Unit Price includes the following:

a. Removal and disposal of existing sidewalk and subbase material.

b. Backfill and compaction of subgrade.

c. Placement and compaction of subbase material.

d. Placement of concrete sidewalk.

C. Unit Price No. 3: Excavation.

1. Description: Excavation of all soil materials and stockpiling for reinstallation.

2. Unit of measurement: Cubic yards.

3. Specification references: Section 312000.

4. Unit Price includes the following:

a. Excavation of all soil materials.

b. Stockpile of materials as required for reinstallation.

Section 012200 - Unit Prices Page 5

c. Removal, capping, and disposal of irrigation laterals as necessary is considered subsidiary to and a part of this unit price.

5. Unit Price does not include special stockpiling procedures for excavation of contaminated soils, which are included in Unit Price 6, Contaminated soil handling and disposal.

D. Unit Price No. 4: Backfill with onsite soils.

1. Description: Excavation backfill with soils excavated onsite.

2. Unit of measurement: Cubic yards.

3. Specification references: Section 312000.

4. Unit Price includes the following:

a. Placement and compaction of soil.

b. Grading to match existing contours.

E. Unit Price No. 5: Imported fill.

1. Description: Excavation fill with borrow soils imported from offsite sources.

2. Unit of measurement: Cubic yards.

3. Specification references: Section 312000.

4. Unit Price includes the following:

a. Provision and delivery of imported soil products.

b. Placement and compaction of soil.

c. Grading to match existing contours.

F. Unit Price No. 6: Contaminated soil handling and disposal.

1. Description: Special procedures required for handling and disposing of contaminated soil.

2. Unit of measurement: Cubic yards.

3. Specification references: 026500.

4. Unit Price includes:

a. Placement of liners, berms, or covers as necessary to prevent contamination of adjacent areas.

b. Loading and transport soils to facility licensed to accept and dispose of contaminated soils.

c. Procuring all permits necessary to transport and dispose of contaminated soils.

d. Payment of fees and all other costs associated with contaminated soil transport and disposal.

G. Unit Price No. 7: Hydrocarbon soil testing.

1. Description: Soil testing required by regulatory agency associated with UST closure.

2. Unit of measurement: Each.

3. Specification references: 026500.

4. Unit Price includes:

a. Excavating to required depth below surface to obtain sample.

b. Soil sampling, handling, and transport.

c. All soil tests required on a single sample. The regulatory agency will require several different tests performed on each sample. All tests require on a sample are included in a single unit price and are not separate items.

d. Completion of all reporting requirements associated with soil testing.

END OF SECTION 012200

Section 013300 – Submittal Procedures Page 6

SECTION 013300 - SUBMITTAL PROCEDURES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Submittal schedule requirements.

2. Administrative and procedural requirements for submittals.

1.2 DEFINITIONS

A. Action Submittals: Written and graphic information and physical samples that require Engineer's responsive action. Action submittals are those submittals indicated in individual Specification Sections as "action submittals."

B. Informational Submittals: Written and graphic information and physical samples that do not require Engineer's responsive action. Submittals may be rejected for not complying with requirements.

Informational submittals are those submittals indicated in individual Specification Sections as "informational submittals."

1.3 SUBMITTAL FORMATS

A. Submittal Information: Include the following information in each submittal:

1. Project name.

2. Date.

3. Unique submittal number, including revision identifier.

4. Submittal purpose and description.

5. Number and title of Specification Section.

6. Drawing number and detail references, as appropriate.

7. Other necessary identification.

B. Contractor has the option of providing paper or electronic submittals.

C. Paper Submittals:

1. Action Submittals: Submit two paper copies of each submittal unless otherwise indicated. Engineer will return one copy.

2. Informational Submittals: Submit one paper copy of each submittal unless otherwise indicated.

Engineer will not return copies.

D. Electronic Submittals: Prepare submittals as PDF package, incorporating complete information into each PDF file. Name PDF file with submittal number.

1.4 SUBMITTAL PROCEDURES

A. Prepare and submit submittals required by individual Specification Sections.

B. Coordination: Coordinate preparation and processing of submittals with performance of construction activities.

C. Processing Time: Allow 10 days for initial review of submittals and 5 days for review of each resubmittal, commencing on Engineer’s receipt of submittal.

D. Distribution: Furnish copies of final submittals to others as necessary for performance of construction activities.

E. Use only final action submittals that are marked with approval notation from Engineer's action stamp.

Section 013300 – Submittal Procedures Page 7

1.5 CONTRACTOR'S REVIEW

A. Action Submittals and Informational Submittals: Review each submittal and check for coordination with other Work of the Contract and for compliance with the Contract Documents. Note corrections and field dimensions. Mark with approval stamp before submitting to Engineer.

B. Contractor's Approval: Indicate Contractor's approval for each submittal with a uniform approval stamp.

Include name of reviewer, date of Contractor's approval, and statement certifying that submittal has been reviewed, checked, and approved for compliance with the Contract Documents.

1.6 ENGINEER'S REVIEW

A. Action Submittals: Engineer will review each submittal, indicate corrections or revisions required, and return it.

B. Informational Submittals: Engineer will review each submittal and will return it if it does not comply with requirements. Engineer will forward each submittal to appropriate party.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 013300

Section 024119 – Selective Demolition Page 8

SECTION 024119 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes demolition and removal of selected portions of buildings and site elements.

1.2 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

1.3 FIELD CONDITIONS

A. Owner will occupy portions of building immediately adjacent to selective demolition area. Conduct selective demolition so Owner's operations will not be disrupted.

B. Conditions existing at time of inspection for bidding purpose will be maintained by Owner as far as practical.

C. Notify Engineer of discrepancies between existing conditions and Drawings before proceeding with selective demolition.

D. Storage or sale of removed items or materials on-site is not permitted.

E. Arrange selective demolition schedule so as not to interfere with Owner's operations.

PART 2 - PRODUCTS – Not Applicable

PART 3 - EXECUTION

3.1 UTILITY SERVICES

A. The location of existing utility services as shown on drawings is approximate. It is the responsibility of the Contractor to arrange for utility location services to confirm actual location of utility services.

B. Unless otherwise noted, all utility services are to remain, and the Contractor is responsible for protection of existing utilities from damage.

3.2 PROTECTION

A. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

B. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

C. Remove temporary barricades and protections where hazards no longer exist.

3.3 SELECTIVE DEMOLITION

A. General:

1. Demolish and remove existing construction only to the extent required by new construction.

2. Use cutting methods least likely to damage construction to remain or adjoining construction.

3. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.

4. Maintain fire watch during and for at least two hours after flame-cutting operations.

5. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.

6. Dispose of demolished items and materials promptly.

Section 024119 – Selective Demolition Page 9

B. Site Access and Temporary Controls: Conduct selective demolition and debris-removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

C. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Pack or crate items after cleaning and repairing. Identify contents of containers.

3. Protect items from damage during transport and storage.

4. Reinstall items in locations indicated. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

D. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition.

3.4 CONCRETE SIDEWALK DEMOLITION

A. Demolish and remove only full sections of concrete sidewalk, which are defined as areas between joints and buildings. Saw cut completely through concrete and reinforcement at joints prior to removal of concrete.

3.5 CLEANING

A. Remove demolition waste materials from Project site and dispose of them in an EPA-approved construction and demolition waste landfill.

B. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

C. Burning: Do not burn demolished materials.

D. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION 024119

Section 026500 – Underground Storage Tank Removal and Disposal Page 10

SECTION 026500 – UNDERGROUND STORAGE TANK REMOVAL AND DISPOSAL

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes:

1. Removal and disposal of underground tank (UST) liquid contents.

2. Removing, cleaning, and disposing of UST.

3. Testing and removing contaminated soils.

4. Backfilling and restoring excavation areas.

1.2 REFERENCES

A. Comply with the following references as required to complete the Work.

B. American Petroleum Institute (API):

1. RP 1604 – Closure of Underground Petroleum Storage Tanks.

2. 2217A-09 – Safe Work in Inert Confined Spaces in the Petroleum and Petrochemical Industries.

3. 2015 – 14 – Safe Entry and Cleaning of Petroleum Storage Tanks.

C. Code of Federal Regulations (CFR):

1. 40 CFR 280 – Underground Storage Tanks; Technical Requirements.

D. United States Environmental Protection Agency (EPA):

1. SW-846 – Evaluating Solid Waste: Physical/Chemical Methods.

1.3 SUBMITTALS

A. Copy of Notice of Intent to Close UST.

B. Test Reports:

1. UST liquid contents analysis.

2. UST interior environment analysis.

3. Soil sample analysis.

C. Qualifications: Provide evidence that the following comply with requirements of Quality Assurance Article in this Specification:

1. UST removal contractor.

2. Testing laboratory.

3. Liquid disposal facility.

4. UST and associated piping/equipment disposal facility.

5. Soil disposal facility.

D. UST removal plan, including but not limited to the following:

1. Project Schedule.

2. Site Safety and Health Plan.

3. Excavation and Material Handling Plan.

4. Sampling Plan.

5. Tank and Piping Removal and Disposal Plan.

6. Spill and Discharge Control Plan.

E. UST site assessment.

Section 026500 – Underground Storage Tank Removal and Disposal Page 11

PART 2 - PRODUCTS

2.1 BACKFILL MATERIAL

A. Comply with requirements of Section 312000, “Earth Moving.”

2.2 MISCELLANOUS MATERIALS

A. Plastic Sheeting: Polyethylene (PE), 6 mil thickness minimum.

B. Waste Collection Drums: 49 CFT 178, type 1A2, steel, removable head, 55 gallon capacity, capable of containing waste without loss.

PART 3 - EXECUTION

3.1 GENERAL

A. Excavation and backfill: Comply with requirements of Section 312000, “Earth Moving,” unless otherwise noted.

B. UST Closure Sequence of Work:

1. Notify EPA a minimum of 30 days before UST closure via Notice of Intent to Close UST.

2. Determine if contamination from UST is present. If contamination exists, notify Engineer, and record site conditions with the EPA.

3. Remove UST liquid contents.

4. Remove UST and associated equipment.

5. Perform soil testing beneath UST and associated equipment to determine if soil has been contaminated.

6. Complete soil assessment report.

7. If contaminated soil is present, remove and legally dispose of contaminated soil.

8. Backfill excavated areas.

9. Restore excavation surfaces.

3.2 SITE SAFETY

A. Comply with all provisions of Site Safety and Health Plan (SSHP).

B. Do not permit personnel not directly involved with the project to enter work zones. Clearly mark and post boundaries of the work zone.

C. Prior to starting onsite work, conduct training with personnel to discuss implementation of the SSHP.

D. Furnish appropriate personal protection equipment and protective clothing. Furnish PPE as required for use by Contracting Officer, Engineer, or other official visitors.

E. Decontaminate or properly dispose of PPE and clothing worn in contaminated areas at the end of the work day.

F. Provide appropriate emergency first aid equipment for treatment of exposure to site physical and chemical hazards.

G. Provide and post a list of emergency phone numbers.

H. Notify the Contracting Officer of any unforeseen hazard or condition which becomes evident during work.

I. Do not permit ignition sources in the work area.

J. Provide shoring as necessary in accordance with OSHA requirements.

3.3 UST LIQUID CONTENTS REMOVAL

A. Collect, test, and analyze UST liquid content samples.

1. Identify individual constituents and concentrations.

2. Identify lower explosive limits for constituents in gaseous form.

3. Identify disposal facilities qualified to receive and process UST liquid contents.

B. Remove UST liquid contents before removing UST.

C. Record liquid volume removed.

Section 026500 – Underground Storage Tank Removal and Disposal Page 12

D. Deliver UST liquid contents to disposal facility.

1. Obtain signed receipt including date, time, total volume, and description of materials received.

2. Obtain final report of UST liquid contents disposition after disposal completion.

3.4 REMOVAL OF UST, PIPING, AND ANCILLARY EQUIPMENT

A. Prior to excavation, purge and vent tank per API RP 1604.

B. Excavate overburden and soils immediately surrounding UST.

1. Contain and cover excavated materials with PE sheeting to prevent loss and mixing with other materials prior to completion of initial soil testing. Provide straw bale berm around outer limits of containment area and cover with PE sheets. Secure edges of sheets to keep sheeting in place.

2. Disconnect all piping and ancillary equipment from the tank. Remove piping completely for interior and exterior of tank. Cap all tank ancillary equipment and piping connections, except those necessary to inert the tank within the excavation zone. Ensure no spillage of piping occurs.

3. Remove tank from excavation and clean the exterior to removal all soil and inspect for signs of corrosion, structural damage, or leakage. Use only non-sparking type materials or equipment which come into contact with the tank or in the vicinity of the excavation.

4. After removal, place tank on a level surface adjacent to the tank excavation and secure it with wood blocking to prevent movement.

5. Secure UST before cleaning.

C. UST Cleaning

1. Measure combustible gas and oxygen concentrations within UST.

2. Ventilate UST interior to reduce combustible gas concentrations to maximum 10% of lower explosive limit and to provide 19.5 – 23.5% oxygen concentration.

3. Cut ports in UST wall to facilitate cleaning access. Comply with API 2217A and 2015 for UST entry, if necessary.

4. Clean surface contaminates from UST and access port interior wall surfaces.

a. Contain removed materials without producing further contamination.

b. Collect removed materials in sealed containers to prevent material loss.

5. Request UST inspection by applicable local or state agencies certifying completion of UST cleaning.

D. Dismantle UST as required for transport to disposal facility.

E. Deliver UST, removed access ports, ancillary equipment to be disposed of, and waste collection drums to disposal facility.

1. Obtain signed receipt including date, time, quantity, and description of materials received.

2. Obtain final report of materials disposition after disposal completion.

3.5 SOIL TESTING

A. After the tank has been removed, examine and test adjacent and underlying soil for evidence of leakage.

Visually inspect the soil for staining after removal of all obviously contaminated soil and screen for the presence of contamination.

B. Collect soil samples in the tank area and piping in the quantity and location prescribed by the agency having jurisdiction. Samples are to be taken from undisturbed soil, two feet below bottom of excavation. If the agency does not have specific requirements for quantity and location of sampling, the minimum number fo soil samples is as follows:

1. Capacity of 950 gallons or less: Two samples, two feet from each end of tank.

2. Capacity of 951 – 7,500 gallons: Four samples, two feet from each corner of the tank and one sample beneath fill/pump ports.

3. Capacity of 7,501 –25,000 gallons: Eight samples, four located approximately two feet from each corner of the tank, two at approximately midpoint of the tank in the long direction approximately two feet from the edge of the tank, one beneath the fill port, and one beneath the pump port.

4. Piping: Take samples for every 25 linear feet of product delivery pipe.

Section 026500 – Underground Storage Tank Removal and Disposal Page 13

C. Sample analysis: Analyze samples for each constituent that has been stored in the UST over its operational history. Unless otherwise noted or required by agency, minimum analyses shall include the following on each sample:

1. Benzene, toluene, ethylbenzene, and xylenes (BTEX).

2. Methyl tertiary-butyl ether (MTBE)

3. Total petroleum hydrocarbon (TPH) – gasoline, diesel.

4. Napthalene.

D. Provide testing results to Engineer within 24 hours of receipt.

E. When soil testing reveals evidence of hydrocarbons in concentrations greater than permitted by applicable agency, collect additional samples in accordance with agency requirements.

F. Constituents stored in the UST include diesel and heating oil.

3.6 SITE ASSESSMENT

A. Perform a site assessment per the requirements of 40 CFR 280.72.

B. Written report shall include a facility drawing showing sampling locations and depths, a sampling information table, and any other relevant information

3.7 CONTAMINATED SOIL REMOVAL

A. If contaminated soils are present, excavate contaminated soils and stockpile per Section 312000, “Earth Moving,” and applicable requirements of this Section and the agency.

B. Profile contaminated soil and profile analytical results to disposal facility for their approval prior to transportation.

C. Engineer will determine the extent of contaminated soil to be removed from the site, not to exceed 50 cubic yards.

D. Deliver contaminated soils to disposal or treatment facility.

1. Obtain signed receipt including date, time, quantity, and description of materials received.

2. Obtain final report of materials disposition after disposal completion.

3.8 UST EXCAVATION BACKFILL AND RESTORATION

A. Backfill and compact excavation per Section 312000, “Earth Moving.”

B. Secure open excavations and stockpile areas while awaiting test results from soil beneath tank. Backfill as soon as possible after tank and contaminated soil removals have been completed and confirmation samples have been taken.

C. Divert surface water around excavations to prevent water from entering the excavation.

D. Restore affected areas to pre-construction conditions per applicable Specification Sections provided in the

Contract Documents.

END OF SECTION 026500

Section 311000 – Site Clearing Page 14

SECTION 311000 - SITE CLEARING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Protecting existing vegetation to remain.

2. Removing existing vegetation.

3. Clearing and grubbing.

4. Stripping and stockpiling topsoil.

5. Removing above- and below-grade site improvements.

6. Disconnecting, capping, or sealing site utilities.

7. Temporary erosion and sedimentation control.

1.2 MATERIAL OWNERSHIP

A. Except for materials indicated to be stockpiled or otherwise remain Owner's property, cleared materials shall become Contractor's property and shall be removed from Project site.

1.3 FIELD CONDITIONS

A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during site-clearing operations.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed trafficways if required by Owner or authorities having jurisdiction.

B. Salvageable Improvements: Carefully remove items indicated to be salvaged and store on Owner's premises where indicated.

C. Utility Locator Service: Notify utility locator service for area where Project is located before site clearing.

D. Do not commence site clearing operations until temporary erosion- and sedimentation-control measures are in place.

PART 2 - PRODUCTS – NOT USED

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect and maintain benchmarks and survey control points from disturbance during construction.

B. Protect existing site improvements to remain from damage during construction.

1. Restore damaged improvements to their original condition, as acceptable to Owner.

3.2 TEMPORARY EROSION AND SEDIMENTATION CONTROL

A. Provide temporary erosion- and sedimentation-control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to erosion- and sedimentation-control Drawings and requirements of authorities having jurisdiction.

B. Inspect, maintain, and repair erosion- and sedimentation-control measures during construction until permanent vegetation has been established.

C. Remove erosion and sedimentation controls, and restore and stabilize areas disturbed during removal.

Section 311000 – Site Clearing Page 15

3.3 EXISTING UTILITIES

A. Locate, identify, disconnect, and seal or cap utilities indicated to be removed or abandoned in place.

Arrange with utility companies to shut off indicated utilities.

B. Interrupting Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others, unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify Engineer not less than two days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without Engineer's written permission.

3.4 CLEARING AND GRUBBING

A. Remove obstructions, trees, shrubs, and other vegetation to permit installation of new construction.

B. Fill depressions caused by clearing and grubbing operations with satisfactory soil material unless further excavation or earthwork is indicated.

3.5 TOPSOIL STRIPPING

A. Remove sod and grass before stripping topsoil.

B. Strip topsoil to depth of 6 inches in a manner to prevent intermingling with underlying subsoil or other waste materials.

C. Stockpile topsoil away from edge of excavations without intermixing with subsoil or other materials. Grade and shape stockpiles to drain surface water. Cover to prevent windblown dust and erosion by water.

3.6 SITE IMPROVEMENTS

A. Remove existing above- and below-grade improvements as indicated and necessary to facilitate new construction.

3.7 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus soil material, unsuitable topsoil, obstructions, demolished materials, and waste materials including trash and debris, and legally dispose of them off Owner's property.

END OF SECTION 311000

Section 312000 - Earthwork Page 16

SECTION 312000 - EARTHWORK

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Clearing and stockpiling existing soils and soil products.

2. Excavating and filling for rough grading the Site.

3. Preparing subgrades for concrete walks and other improvements.

4. Subbase course for concrete walks and pavements.

5. Decorative gravel.

1.2 INFORMATIONAL SUBMITTALS

A. Material test reports.

1.3 FIELD CONDITIONS

A. Utility Locator Service: Notify utility locator service for area where Project is located before beginning earthwork.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: Soil Classification Groups GW, GP, GM, SW, SP, and SM according to ASTM D2487, or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter. Unless contaminated or otherwise noted, soils removed from excavations are assumed to be satisfactory for backfill.

C. Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D2487, or a combination of these groups.

D. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

E. Decorative rock: Crushed limestone rock, approximately 5/8” in diameter. Match the color, size, and gradation of existing decorative rock.

2.2 OTHER MATERIALS

A. Weed Control Products:

1. Weed barrier fabric: Landscape fabric constructed of nonwoven spun polypropylene.

Recommended by manufacturer for prevention of weeds in soils beneath installed fabric while allowing passage of water and air.

2. Installation staples: Metal staples recommended by manufacturer of weed barrier fabric for installation and anchoring of weed barrier fabric.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth-moving operations.

B. Protect and maintain erosion and sedimentation controls during earth-moving operations.

Section 312000 - Earthwork Page 17

C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials.

D. Locate, identify, disconnect, and seal or cap utilities indicated to be removed or abandoned in place.

Arrange with utility companies to shut off indicated utilities.

3.2 DECORATIVE ROCK STRIPPING

A. Strip decorative rock to the top of existing weed control barrier (approximately 3 inches) in a manner to prevent intermingling with underlying soils or other materials.

B. Stockpile decorative rock away from edge of excavations without intermixing with subsoil or other materials. Grade and shape stockpiles to drain surface water. Cover to prevent windblown dust and erosion by water.

C. Remove and dispose of existing weed barrier fabric and associated anchoring staples.

3.3 EXCAVATION

A. Unclassified Excavation: Excavate to anticipated depth regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions.

B. Storage of soil materials:

1. Stockpile excavated satisfactory soils without intermixing.

2. Stockpile excavated soils suspected of being contaminated separately from satisfactory soils. Place

PE layer beneath soils suspected of contamination to prevent contamination of underlying soils and structures. Comply with all existing laws and regulations regarding storage and stockpiling of contaminated soils.

3. Place, grade, and shape stockpiles to drain surface water.

4. Stockpile soils away from edge of excavation.

C. Stockpile soils suspected of being contaminated separately from uncontaminated soils. Place stockpiled soils on PE barrier to prevent contaminating underlying soils and structures. Take precautions to meet all existing regulations regarding temporary storage of contaminated soils.

3.4 SOIL FILL

A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

B. Place and compact satisfactory soils material to required subgrade elevations.

C. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content.

1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.5 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment and not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Place backfill and fill soil materials evenly on all sides of structures to required elevations and uniformly along the full length of each structure.

C. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D698 or ASTM D1557:

1. Under walkways, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 92 percent.

2. Under unpaved areas, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 90 percent.

Section 312000 - Earthwork Page 18

3.6 GRADING

A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

B. Site Rough Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to elevations required to achieve indicated finish elevations, with a subgrade tolerance of plus or minus one inch.

3.7 SUBBASE COURSES UNDER PAVEMENTS AND WALKS

A. Place subbase course on subgrades free of mud, frost, snow, or ice.

B. Shape subbase course to required elevations and grades.

C. Compact subbase course and base course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 95 percent of maximum dry unit weight according to ASTM D698 or ASTM D1557.

3.8 ROCK MULCH

A. Install weed control fabric as recommended by manufacturer on finished subgrade.

B. Blend existing and new decorative rock if necessary to mitigate differences in color, size, shape, and other characteristics of existing and new rock.

C. Carefully place decorative rock over weed control fabric to avoid puncturing, tearing, or otherwise damaging fabric.

D. Hand grade rock mulch to finished grade.

E. Compact rock with vibrating plate.

3.9 FIELD QUALITY CONTROL

A. Testing Agency: Contractor will engage a qualified geotechnical engineering testing agency to perform tests and inspections.

B. Allow testing agency to inspect and test subgrades at the following frequency:

1. Perform one test each at 4’ and 8’ below final grade.

2. Perform one test at subgrade beneath restored sidewalk.

3. Provide one test at subgrade beneath restored rock mulch.

C. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil materials to depth required; recompact and retest until specified compaction is obtained.

3.10 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing. Restore appearance, quality, and condition of finished surface to match adjacent work and eliminate evidence of restoration to greatest extent possible.

3.11 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus satisfactory soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property.

END OF SECTION 312000

Crow/NC Hospital UST removal SPECIFICATIONS Crow Agency, Montana

Section 321313 - Concrete Paving Page 19

SECTION 321313 - CONCRETE PAVING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes Concrete Paving, including walkways.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Design Mixtures: For each concrete paving mixture. Include alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

1.3 QUALITY ASSURANCE

A. Ready-Mix-Concrete Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C94/C94M requirements for production facilities and equipment.

PART 2 - PRODUCTS

2.1 CONCRETE, GENERAL

A. ACI Publications: Comply with ACI 301 unless otherwise indicated.

2.2 STEEL REINFORCEMENT

A. Plain-Steel Welded-Wire Reinforcement: ASTM A1064/A1064M, fabricated from as-drawn steel wire into flat sheets.

B. Deformed-Steel Welded-Wire Reinforcement: ASTM A1064/A1064M, flat sheet.

C. Reinforcing Bars: ASTM A615/A615M, Grade 60; deformed.

D. Joint Dowel Bars: ASTM A615/A615M, Grade 60 plain-steel bars. Cut bars true to length with ends square and free of burrs.

2.3 CONCRETE MATERIALS

A. Cementitious Materials: Use the following cementitious materials, of same type, brand, and source throughout Project:

1. Portland Cement: ASTM C150/C150M, portland cement Type I/IA Type II/IIA Type I/II Type III Type V.

2. Fly Ash: ASTM C618, Class C or Class F.

3. Slag Cement: ASTM C989/C989M, Grade 100 or 120.

4. Blended Hydraulic Cement: ASTM C595/C595M, cement.

B. Normal-Weight Aggregates: ASTM C33/C33M, Class 4S, uniformly graded. Provide aggregates from a single source.

C. Air-Entraining Admixture: ASTM C260/C260M.

D. Chemical Admixtures: Admixtures certified by manufacturer to be compatible with other admixtures and to contain not more than 0.1 percent water-soluble chloride ions by mass of cementitious material.

E. Water: Potable and complying with ASTM C94/C94M.

2.4 CURING MATERIALS

A. Absorptive Cover: AASHTO M 182, Class 3, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. dry or cotton mats.

B. Moisture-Retaining Cover: ASTM C171, polyethylene film or white burlap-polyethylene sheet.

C. Water: Potable.

Section 321313 - Concrete Paving Page 20

D. Evaporation Retarder: Waterborne, monomolecular, film forming, manufactured for application to fresh concrete.

E. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C309, Type 1, Class B, dissipating.

2.5 RELATED MATERIALS

A. Joint Fillers: ASTM D1751, asphalt-saturated cellulosic fiber or ASTM D1752, cork or self-expanding cork in preformed strips.

2.6 CONCRETE MIXTURES

A. Prepare design mixtures, proportioned according to ACI 301, for each type and strength of normal-weight concrete, and as determined by either laboratory trial mixtures or field experience.

B. Cementitious Materials: Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows:

1. Fly Ash or Pozzolan: 25 percent.

2. Slag Cement: 50 percent.

3. Combined Fly Ash or Pozzolan, and Slag Cement: 50 percent, with fly ash or pozzolan not exceeding 25 percent.

C. Add air-entraining admixture at manufacturer's prescribed rate to result in normal-weight concrete at point of placement having an air content as follows:

1. Air Content: 6 percent plus or minus 1-1/2 percent.

D. Chemical Admixtures: Use admixtures according to manufacturer's written instructions.

E. Concrete Mixtures: Normal-weight concrete.

1. Compressive Strength (28 Days): 4000 psi.

2. Maximum W/C Ratio at Point of Placement: 0.45.

3. Slump Limit: 4 inches, plus or minus 1 inch.

2.7 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, and mix concrete materials and concrete according to ASTM C94/C94M. Furnish batch certificates for each batch discharged and used in the Work.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Proof-roll prepared subbase surface below concrete paving to identify soft pockets and areas of excess yielding.

3.2 PREPARATION

A. Remove loose material from compacted subbase surface immediately before placing concrete.

3.3 EDGE FORMS AND SCREED CONSTRUCTION

A. Set, brace, and secure edge forms, bulkheads, and intermediate screed guides to required lines, grades, and elevations. Install forms to allow continuous progress of work and so forms can remain in place at least 24 hours after concrete placement.

B. Clean forms after each use and coat with form-release agent to ensure separation from concrete without damage.

3.4 STEEL REINFORCEMENT INSTALLATION

A. Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and supporting reinforcement.

Section 321313 - Concrete Paving Page 21

3.5 JOINTS

A. General: Form construction, isolation, and contraction joints and tool edges true to line, with faces perpendicular to surface plane of concrete. Construct transverse joints at right angles to centerline unless otherwise indicated.

B. Construction Joints: Set construction joints at side and end terminations of paving and at locations where paving operations are stopped for more than one-half hour unless paving terminates at isolation joints.

C. Isolation Joints: Form isolation joints of preformed joint-filler strips abutting concrete curbs, catch basins, manholes, inlets, structures, other fixed objects, and where indicated.

D. Contraction Joints: Form weakened-plane contraction joints, sectioning concrete into areas as indicated.

Construct contraction joints for a depth equal to at least one-fourth of the concrete thickness:

E. Edging: After initial floating, tool edges of paving, gutters, curbs, and joints in concrete with an edging tool to a 1/4-inch radius. Repeat tooling of edges after applying surface finishes. Eliminate edging-tool marks on concrete surfaces.

3.6 CONCRETE PLACEMENT

A. Moisten subbase to provide a uniform dampened condition at time concrete is placed. Do not place concrete around manholes or other structures until they are at required finish elevation and alignment.

B. Comply with ACI 301 requirements for measuring, mixing, transporting, and placing concrete.

C. Deposit and spread concrete in a continuous operation between transverse joints. Do not push or drag concrete into place or use vibrators to move concrete into place.

D. Screed paving surface with a straightedge and strike off.

E. Commence initial floating using bull floats or darbies to impart an open-textured and uniform surface plane before excess moisture or bleedwater appears on the surface. Do not further disturb concrete surfaces before beginning finishing operations or spreading surface treatments.

3.7 FLOAT FINISHING

A. General: Do not add water to concrete surfaces during finishing operations.

B. Float Finish: Begin the second floating operation when bleedwater sheen has disappeared and concrete surface has stiffened sufficiently to permit operations. Float surface with power-driven floats or by hand floating if area is small or inaccessible to power units. Finish surfaces to true planes. Cut down high spots and fill low spots. Refloat surface immediately to uniform granular texture.

1. Medium-to-Fine-Textured Broom Finish: Draw a soft-bristle broom across float-finished concrete surface, perpendicular to line of traffic, to provide a uniform, fine-line texture.

3.8 CONCRETE PROTECTION AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures.

B. Comply with ACI 306.1 for cold-weather protection.

C. Evaporation…