TECHNICAL SPECIFICATIONS

FOR

SAN BERNARDINO COUNTY

SHR AVIATION FLIGHT LINE PAVEMENT

REPLACMENT

PROJECT 10.10.1932

AT

199 N. HANGAR WAY

SAN BERNARDINO INTERNATIONAL AIRPORT

SAN BERNARDINO, CALIFORNIA

JUNE 5, 2026

PREPARED BY

Huitt-Zollars, Inc.

3990 Concours Suite 330

Ontario, CA 91764 Ph: 909.941.7799

San Bernardino County Technical Specifications

Table Of Contents ii June 5, 2026

SPECIFICATIONS FOR

SAN BERNARDINO COUNTY

SHR Aviation Flight Line Pavement Replacement

Table of Contents

Section Title

C-103 Water Pollution Control

C-105 Mobilization

D-703 Trench Drain

D-704 Modular Buried Stormwater Storage Units

D-706 HDPE Storm Drain Pipe

D-753 Hydrodynamic Separator

F-162 Chain Link Fence

L-108 Underground Power Cable for Airports

L-110 Airport Underground Electrical Duct Banks and Conduits

L-115 Electrical Manholes and Junction Structures

L-125 Install of Airport Lighting Systems

L-126 Magnetic Gate Loops

P-101 Surface Preparation

P-102 Survey

P-152 Excavation, Subgrade, and Embankment

P-209 Crushed Aggregate Base Course

P-501 Portland Cement Concrete (PCC) Pavement

P-502 Concrete Construction

P-605 Joint Sealants for Concrete Pavements

P-620 Runway and Taxiway Marking

Item C-103 Water Pollution Control

Item C-103 Water Pollution Control

DESCRIPTION

The water pollution control work shall conform to the requirements in the Construction Contractor’s Guide and Specifications of the Stormwater Best Management Practice Handbook, dated December 2019, and addenda thereto issued up to and including the date of advertisement of the project, hereafter referred to as the “Handbook”. Copies of the Handbook may be obtained from CASQA website at:

https://www.casqa.org/resources/bmp-handbooks; Telephone: (424) 241-2249; or email at:

CASQA@casqa.orgmailto:info@casqa.org. The Contractor shall become fully informed of, and comply with, the applicable provisions of the Handbook, Permit, and Federal, State, and local regulations that govern the Contractor’s operations and storm water discharges from both the project site and areas of disturbance outside the project limits during construction. The Contractor shall maintain a copy of the Permit at the project site and shall make the Permit available during construction activities.

Contractor is not responsible for filing a Notice of Intent (NOI) for Permit coverage or a Notice of Termination (NOT) at project end or for preparing a SWPPP. A draft SWPPP will be provided to the contractor as a starting point for water pollution control compliance. The SWPPP is a living document and the Contractor’s Qualified SWPPP Developer (QSP) will assume responsibility for updating and maintaining applicable records upon the start of work. The WDID number is shown on the plans.

The Contractor is responsible to protect the Project site from erosion damage at all times by utilizing interim erosion control measures which, due to the site’s ever changing condition during construction, is achieved by implementing Best Management Practices (BMPs). The Contractor shall ensure that Best Management Practices (BMPs) within the SWPPP are implemented by a Qualified SWPPP Practitioner

(QSP).

Storm, surface and/or nuisance water may be encountered at various times and locations during performance of the Work. Such waters may interfere with Contractor’s operation and may cause damage to adjacent or downstream private and/or public property by flooding, lateral erosion, sedimentation, or pollution if not properly controlled by Contractor. Contractor, by entering into the Contract, assumes all risk and responsibility for water control. Contractor’s responsibility includes, at a minimum, handling any nuisance and/or storm waters that may result during the term of the Contract in a manner which will protect construction throughout the various stages of work up to the point of final acceptance by Owner.

The Contractor shall install and maintain all required or necessary erosion control measures to cover the entire duration of the term of the Contract.

BASIS OF PAYMENT

Full compensation for conforming to the requirements of this Bid Item, “C-103 – Water Pollution Control” including furnishing all labor, tools, equipment, documentation, and materials for doing the work shall be included in the contract LUMP SUM price bid, and no additional compensation will be allowed.

Item C-105 Mobilization

105-1 Description. This item of work shall consist of, but is not limited to, work and operations necessary for the movement of personnel, equipment, material and supplies to and from the project site for work on the project except as provided in the contract as separate pay items.

105-2 Mobilization limit. Mobilization shall be limited to 10 percent of the total project cost.

105-3 Posted notices. Prior to commencement of construction activities, the Contractor must post the following documents in a prominent and accessible place where they may be easily viewed by all employees of the prime Contractor and by all employees of subcontractors engaged by the prime Contractor: Equal Employment Opportunity (EEO) Poster “Equal Employment Opportunity is the Law”.

The Owner may include additional posted notices as required by local and State law, see General Provisions or other requirements in these contract documents. These notices must remain posted until final acceptance of the work by the Owner.

105-4 Engineer/RPR field office. The Contractor shall provide dedicated space for the use of the field RPR and inspectors, as a field office for the duration of the project. This space shall be located conveniently near the construction and shall be separate from any space used by the Contractor. The Contractor shall furnish water, sanitary facilities, heat, air conditioning, and electricity in accordance with local building codes.

METHOD OF MEASUREMENT

105-5 Basis of measurement and payment. Based upon the contract lump sum price for “Mobilization” partial payments will be allowed as follows:

a. With first pay request, 25%.

b. When 25% or more of the original contract is earned, an additional 25%.

c. When 50% or more of the original contract is earned, an additional 40%.

d. After Final Inspection, Staging area clean-up and delivery of all Project Closeout materials as required by Section 90, paragraph 90-11, Contractor Final Project Documentation, the final 10%.

BASIS OF PAYMENT

105-6 Payment will be made under:

Item C-105.1 Mobilization - per Lump Sum (LS)

END OF ITEM C-105

Item D-703 Trench Drain

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Trench drain systems.

1.2 REFERENCES

A. ASTM International (ASTM):

ASTM A 36 - Standard Specification for Carbon Structural Steel.

ASTM A 48 – Standard specification for Gray Iron Castings.

ASTM A 123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

ASTM A 536 - Standard Specification for Ductile Iron Castings.

ASTM B 146 - Specification for Leaded Yellow Brass Sand Castings for General

Purposes.

ASTM A929 – Standard specification for galvanized steel coils ASTM A760 – Standard specification for manufacturing corrugated metal pipe ASTM C267 – Standard for chemical resistance ASTM C307 – Standard for tensile strength ASTM C579 – Standard for compressive strength ASTM C580 – Standard for flexural strength ASTM D570 – Standard for water absorption

B. AASHTO (American association of state highway and transportation officials) AASHTO M306-10 – Standard specification for drainage, sewer, utility, and related castings.

C. FAA (Federal Aviation Administration) FAA AC150-5320-6 – Standard specification for airport pavement design

1.3 SUBMITTALS

A. Product Data: Manufacturer's data sheets on each product to be used, including:

Preparation instructions and recommendations.

Storage and handling requirements and recommendations.

Installation methods.

B. Shop Drawings:

1.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: Minimum 5 year experience manufacturing similar products.

B. Installer Qualifications: Minimum 2 year experience installing similar products.

1.5 PRE-INSTALLATION MEETINGS

A. Convene minimum two weeks prior to starting work of this section.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver and store products in manufacturer's unopened packaging bearing the brand name and manufacturer's identification until ready for installation.

B. Store materials protected from exposure to harmful weather conditions and at temperature and humidity conditions recommended by manufacturer.

C. Handle materials to avoid damage.

1.7 PROJECT CONDITIONS

A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.

1.8 WARRANTY

A. Warranty: Provide manufacturer's standard limited warranty.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer: Eric-Sons Inc., 574 Industrial Way N, Dallas, GA 30132, USA.

ASD. Tel: (770) 505-6575. Email: info@eric-sons.com. Web: http://www.duratrench.com.

B. Requests for substitutions will be considered by the EOR.

2.2 SYSTEM DESCRIPTION

A. Design: Provide the following type of drain systems.

Type: Trench drains.

B. Performance:

Provide a complete drain system made up of selected components that together shall make a functional trench drain system. The trench drain components provided and installed shall be the trench drain body, load bearing frame, trench drain grate, grate locking mechanism, channel joint sealing, and outlet connection.

The trench drain body shall be sized for the anticipated flow rate, application, chemical resistance, and ease of installation. The trench drain body shall have specified slope without exception to meet design flow requirements.

The load bearing frame shall be sized based on the load rating and bearing area. The frame shall have a minimum of 2 anchors per section to properly secure the frame into the concrete surround. The material and finish shall be selected based on chemical resistance and corrosion resistance anticipated, and the aesthetic design for the Project.

The grates shall be selected based on open area and load rating required. The material and finish shall be selected based on chemical resistance and corrosion resistance anticipated, and the color, and pattern for the Project.

Grates that are small, light, in high speed traffic, or have theft potential shall be locked down to the trench frame. The locking mechanism shall be selected based on the pullout resistance, dynamic loading, and chemical loading anticipated for the system.

Where trench joints are required to be sealed water tight the system selected shall have 1.5” minimum width flange for applying sealant or the proper welding.

The outlet pipe shall be sized for the anticipated flow. Pipe material shall mate with other piping, have proper load rating at the given cover depth, and have the proper corrosion resistance.

Where the grate design is indicated as a heel proof the openings shall be less than 1/4 inch (6

mm) wide suitable for pedestrian traffic. Where the grate design is indicated as ADA compliant, the grate shall comply with the requirements of the Americans with Disabilities Act handbook section 4.5.4.

2.3 COMPONENTS

A. Trench Body Material:

DTPF = Prefabricated glass fiber reinforced polymer body (Polyester resin). The trench drain body shall be composed of polyester fiber reinforced polymer concrete. The trench shall have a clear open throat and have a rounded or flat bottom as indicated in plan details.

The trench body shall be gray in color to closely resemble the color of concrete. The trench body shall have a manning’s roughness coefficient of 0.009 for improved flow rates and reduced debris build-up. Sections shall be 96" long (typical) and have a 2" receiving flange on the upstream end for receiving and sealing the trench sections together. Each of the sections shall be labeled to indicate proper flow and placement. The trench body shall mate to the frame and form a grate seat that shall accept the specified grate. The body shall be supplied with a factory fit plywood top for rail alignment and fastening of the channels in the field ensuring that the rails are cast in a coplanar manner. The trench body shall have the following properties: 12,600 psi minimum tensile strength per ASTM C307, 12,000 psi.

minimum compressive strength per ASTM C579, 26,500 psi minimum flexural strength per ASTM C580, less than 0.35% water absorption, shall be frost proof, salt proof, and be resistant to dilute acids and alkalis per ASTM C267.

B. Slope: As indicated on the Drawings.

C. Grate: Model 12SBAC24DBF.

D. Frame: HDGS - Heavy duty galvanized steel.

E. Grate Locking: GL4B - Four corner bolt down of grates

F. Joint Sealant: NSR - No joint sealant is required for this application. Joints will self-seal with proper consolidation of the concrete.

PART 3 EXECUTION

3.1 EXAMINATION

A. Do not begin installation until substrates have been properly prepared.

B. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.

3.2 PREPARATION

A. Ensure ground conditions are compacted and suitable for construction. Poor soil bearing conditions or other site conditions will require engineering advise. Ensure excavation will allow for proper thickness of concrete surround before proceeding.

B. Ensure any reinforcement is placed and firmly held in place prior to linear drain installation.

All reinforcement steel shall follow concrete reinforcing steel institute standards.

C. Prepare linear drains by ensuring they are clean and properly oriented and sequenced.

3.3 INSTALLATION

A. Install in accordance with manufacturer's instructions, approved submittals, and in proper relationship with adjacent construction.

B. Construct expansion and control joints as indicated in construction documents. Install in accordance with manufacturer's instructions, approved submittals, and in proper relationship with adjacent construction. The linear drain products are not to be used as a construction or control joint in the lengthwise direction. Any construction, expansion, or control joints placed traverse to the system shall be made at linear drain joints in the frame.

C. Place concrete to completely encapsulate linear drain as shown in contract documents. The drain shall be finished 1/8” below finish grade while ensuring proper slope of adjacent areas toward the drain creating positive flow to the drain.

D. All linear drains shall be installed to within ¼” tolerance.

3.4 PROTECTION

A. Protect installed products until completion of project. Protective wood trench covers shall remain in place until such time that grating can be installed with no future damage to grating finishes.

B. Clean and remove any debris from linear drains prior to Owner’s acceptance.

C. Touch-up, repair or replace damaged products before Substantial Completion.

PART 4 METHOD OF MEASUREMENT

The length of Trench Drain shall be measured in linear feet in place, completed, and approved. It shall be measured along the centerline of the drain from end or inside face of structure to the end or inside face of structure, whichever is applicable. All fittings shall be included in the footage as typical pipe sections being measured.

Any catch basin shall be measured as single unit item and will include all grates and fittings required for completion.

PART 5 BASIS OF PAYMENT

Payment shall be made at contract unit price for the unit of measurement as specified above. This price shall be full compensation for furnishing all materials and for all preparation, excavation, hauling, and placing of the material and for all labor, equipment, tools, and incidentals necessary to complete this item.

END OF ITEM D-703

Item D-704 Modular Buried Stormwater Storage Units 1

Item D-704 Modular Buried Stormwater Storage Units

704-1.1 SUMMARY.

A. This section includes stormwater drainage systems for building roof drainage and site area drainage.

B. Work includes the installation of the StormTech chamber drainage system.

C. Related work includes the installation of drainage inlet structures, manholes and outlet structures.

704-1.3 Abbreviations.

A. PP: Polypropylene B. HDPE: High Density Polyethylene C. PE: Polyethylene D. PVC: Polyvinyl Chloride E. ASTM – American Society for Testing and Materials F. AASHTO – American Association of State Highway and Transportation Officials G. ADS – Advanced Drainage Systems Inc.

H. TSS – Total Suspended Solids

704-1.4 Definition.

A. Stormwater Chamber System: All products associated with the drainage system including but not limited to chambers, end caps, pipe, fittings, stone, geotextile, and drainage structures.

B. Subsurface Drainage System: Refers to the StormTech subsurface stormwater chamber system.

C. Manifolds and manifold piping refer to the piping system to inlet and outlet rows of chambers.

D. STORMTECH brand name is referred to as CHAMBER MANUFACTURER hereafter.

E. ADS and HANCOR brand names are considered interchangeable within this section.

704-1.5 Reference Standards.

A. American Association of State Highway and Transportation Officials (AASHTO):

a. AASHTO LRFD Bridge Design Specifications Section 3 – Loads and Load

Factors

b. AASHTO LRFD Bridge Design Specifications Section 12 – Buried Structures and

Tunnel Liners

c. AASHTO M 43 – Standard Specification for Sizes of Aggregate for Road and

Bridge Construction

d. AASHTO M 288 – Standard Specification for Geotextile Specification for

Highway Applications

Item D-704 Modular Buried Stormwater Storage Units 2

e. AASHTO M 294 – Standard Specification for Corrugated Polyethylene Pipe, 300-to 1500-mm Diameter

B. American Society for Testing and Materials (ASTM):

a. ASTM F 2418 or F 2922 Standard Specification for Polypropylene (PP) or

Polyethylene (PE) Corrugated Wall Stormwater Collection Chambers

b. ASTM F 2787 Standard Practice for Structural Design of Thermoplastic

Corrugated Wall Stormwater Collection Chambers

c. ASTM D 2321 – Standard Practice for Underground Installation of

Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications

d. ASTM F 2306 – Standard Specification for 12 to 60 in. [300 to 1500 mm] Annular

Corrugated Profile-Wall Polyethylene (PE) Pipe and Fittings for Gravity-Flow Storm Sewer and Subsurface Drainage Applications

704-1.6 Administrative Requirements.

A. Preinstallation Meetings:

a. A preinstallation meeting between StormTech representative and general contractor is recommended to discuss the chamber system installation.

i. StormTech offers installation consultations to installing contractors.

ii. Contact StormTech at least 30 days prior to system installation to arrange a pre-installation consultation.

B. Sequencing:

a. Contractor is responsible for coordinating the installation of the subsurface stormwater chamber system with the installation of permanent structures on site.

i. Construction loads for permanent structures may require the subsurface chamber system to be installed after the permanent structure(s) on site.

b. Coordinate stormwater chamber system connections to off-site storm sewer with the appropriate agency having jurisdiction.

c. Coordinate stormwater chamber system connections to existing on-site storm sewer.

d. Coordinate with building roof drainage systems.

e. Coordinate with other utility work.

704-1.7 Submittals.

A. The following shall be submitted by contractor:

a. Product Specifications for:

i. StormTech chambers and end caps

ii. ADS PE pipe

b. Product Installation Instructions for:

i. StormTech chambers and end caps

ii. ADS PE pipe

c. Inspection and Maintenance Instructions for:

i. StormTech Isolator Row PLUS

Item D-704 Modular Buried Stormwater Storage Units 3

704-1.8 Quality Assurance.

A. Regulatory Agency Approvals:

a. Manufacturers

b. Environmental Agency Compliance: Comply with regulations pertaining to storm drainage systems.

c. Utility Compliance: Comply with regulations pertaining to storm drainage systems. Include standards of water and other utilities where appropriate.

B. Qualifications

a. All chamber and end cap products must be produced in an ISO 9001 certified manufacturing facility or shall demonstrate at least 5 years of experience in the production of similar products.

704-1.9 Delivery, Storage, and Handling.

A. Contractor shall check all materials upon delivery to assure that the proper chamber size and plastic pipe C pipe fittings have been received.

B. Contractor shall check the chambers for shipping damage prior to installation. Units that have been damaged must not be installed. Contractor shall contact chamber manufacturer immediately upon discovery of any damage. Chamber may be left palletized until the units are ready to be installed.

C. All chambers, pipe, and pipe fittings shall be delivered to the site and unloaded with handling that conforms to the manufacturer’s instructions for reasonable care.

D. Protect chamber and chamber fittings from dirt and damage.

E. All pipe and chambers shall be protected against impact, shock, and free fall. Only equipment of sufficient capacity and proper design shall be used in handling of the pipe or chamber.

Storage of the pipe or chamber on the job shall be in accordance with the product manufacturer’s recommendations.

F. Contractor shall refer to the fabric manufacturer’s guidance for handling and storage of fabric products on site.

PRODUCTS

704-2.1 Manufacturer.

A. StormTech, Inc.

B. Advanced Drainage Systems, Inc.

C. Hancor, Inc.

704-2.2 Stormwater Chamber System.

A. Chamber Options

a. Only stormwater chamber systems evaluated by a licensed design engineer and found to meet AASHTO LRFD Bridge Design Specifications, Section

12.12 safety factors shall be allowed.

b. Stormwater chambers must be designed in accordance with ASTM F 2418 or F

Item D-704 Modular Buried Stormwater Storage Units 4

2922, Standard Specification for Polypropylene (PP) or Polyethylene (PE) Corrugated Wall Stormwater Collection Chambers.

c. The structural design of the chambers, the structural backfill, and the installation requirements shall ensure that the load factors specified in the AASHTO LRFD Bridge Design Specifications, Section 12.12, are met for:

i. Long-duration dead loads, and

ii. Short-duration live loads based on the AASHTO design truck with consideration for impact and multiple vehicle presence.

d. Stormwater chambers shall be designed, tested, and allowable load configurations determined in accordance with ASTM F 2787, Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers.

Load configurations shall include:

i. Instantaneous (<1 minute) AASHTO design truck live load on minimum cover,

ii. Maximum permanent (75-year) cover load, and

iii. Allowable cover with parked (1-week) AASHTO design truck.

e. Chamber systems allowed under this specification include:

i. StormTech SC-160LP

ii. StormTech SC-310

iii. StormTech SC-740

iv. StormTech SC-800

v. StormTech DC-780

vi. StormTech MC-3500

vii. StormTech MC-4500

viii. StormTech MC-7200

B. Performance

a. Requirements for handling and installation:

i. To maintain the width of chambers during shipping and handling, chambers shall have integral, interlocking stacking lugs.

ii. To ensure a secure joint during installation and backfill, the height of the chamber joint shall not be less than:

1. SC-160LP: 1.5 in.

2. SC-310: 2 in.

3. SC-740: 2 in.

4. DC-780: 2 in.

5. SC-800: 2 in.

6. MC-3500: 3 in.

7. MC-4500: 3 in.

8. MC-7200: 3 in.

iii. To ensure the integrity of the arch shape during installation:

1. The average arch stiffness constant as defined in Section 6.2.8 of

Item D-704 Modular Buried Stormwater Storage Units 5

ASTM F 2922 shall be:

a. SC-160LP: 325 lbs/in/% deflection

b. SC-310: 325 lbs/in/% deflection

c. SC-740: 500 lbs/in/% deflection

d. DC-780: 500 lbs/in/% deflection

e. SC-800: 700 lbs/in/% deflection

f. MC-3500: 500 lbs/in/% deflection

g. MC-4500: 500 lbs/in/% deflection

h. MC-7200: 500 lbs/in/% deflection

2. To resist deformation at elevated temperatures (above 73°F / 23°C), chambers shall be manufactured in reflective gold or yellow colors.

b. Only chambers approved by the site design engineer shall be allowed. Upon request by the design engineer or owner, the chamber manufacturer shall submit a structural evaluation for approval prior to delivery.

i. The structural evaluation shall be sealed by a registered professional engineer.

ii. The structural evaluation shall demonstrate that the safety factors are greater than or equal to 1.95 for dead load and 1.75 for live load, as required by ASTM F 2787 and AASHTO LRFD Bridge Design Specifications.

iii. The test-derived creep modulus, as specified in ASTM F 2922, shall be the 75-year value and used for permanent dead load design.

c. Only mechanical and material properties determined in accordance with ASTM test methods shall be used for structural design.

d. Only chambers affixed with the ASTM F 2418 or F 2922 designation shall be considered compliant.

e. Performance of the stormwater treatment system shall conform to Section

2.03 of this specification.

f. The contractor shall submit a design summary by the manufacturer demonstrating that the system is designed to convey peak flow rates without scour of foundation stone.

C. Materials

a. Chamber

i. Chambers shall be arch-shaped and injection molded from virgin polypropylene or polyethylene resin, and be yellow in color.

ii. Chamber rows shall provide continuous, unobstructed internal space with no internal support panels, allowing ease of access for inspection and maintenance.

iii. Inspection ports shall be installed and constructed per project plans. Note:

Inspection ports shall only be installed along the Isolator™ Row PLUS to allow for sediment inspection over time.

iv. Chambers shall be open-bottomed.

Item D-704 Modular Buried Stormwater Storage Units 6

v. Chambers shall incorporate an overlapping corrugation joint system to allow chamber rows of nearly any length. Chamber models may be field-cut to optimize layout and reduce waste.

b. Chambers and end caps shall be produced at an ISO 9001 certified manufacturing facility.

c. End Caps

i. End caps shall be injection molded or roto molded from polyethylene or polypropylene resin and accommodate polyethylene pipe connections.

End caps shall have a curved face capable of withstanding typical horizontal and vertical loads. End caps for MC- 3500, MC-4500, and MC-7200 chambers shall be corrugated.

ii. All chamber rows shall terminate with an end cap. End cap placement may vary by chamber model.

iii. End caps may include cutting guides for various pipe diameters, located at both the top and bottom of the end cap. Varies by chamber model.

d. Manifold Piping

i. Manifold piping shall be designed to distribute peak flows to chamber rows without scouring foundation stone.

ii. Manifold piping shall be constructed of dual wall HDPE, such that standard hydraulic equations can be used for design.

e. Stone

i. Foundation, embedment, and cover stone shall conform to the chamber manufacturer’s installation instructions.

f. Fabric

i. Fabric shall be placed between the chamber bottom and the stone foundation along the entire length of the Isolator Row PLUS and the first:

1. 12.5 ft for SC-310, SC-740, SC-800, and DC-780 inlet rows

2. 17.5 ft for MC-3500, MC-4500, and MC-7200 inlet rows

ii. Fabric shall be ADSPLUS Woven for sediment capture, filtration, and scour protection.

iii. If required, a thermoplastic liner may be installed around the entire system to prevent water migration. Refer to manufacturer’s Tech Note

6.50 for guidance.

704-2.3 Stormwater Treatment Systems.

A. The stormwater chamber system shall incorporate an Isolator Row PLUS for stormwater treatment and system maintenance. An Isolator Row PLUS is a chamber row enclosed in geotextile fabric for sediment capture and maintenance.

B. The stormwater treatment system shall remove a minimum of 80% of Total Suspended Solids (TSS), 80% Total Petroleum Hydrocarbons (TPH), 80% Suspended Sediment Concentration, 60% Total Phosphorus, and 60% Total Zinc as verified by 3rd party testing.

Item D-704 Modular Buried Stormwater Storage Units 7

C. Stormwater treatment system inspection and maintenance shall be in accordance with Section 3 of this specification and the product manufacturer’s published guidance.

704-2.4 Accessories.

A. Spacers can be used to obtain the required minimum spacing between chamber rows.

B. During construction, FlexStorm Catch It inlet filters or pipe plugs on all inlet pipes to the stormwater chamber system can be used to prevent construction sediment from entering the Isolator Row PLUS system. Pipe plugs shall be removed once construction of the system is complete and no further construction sediment loading is expected.

EXECUTION

704-3.1 General.

a. Installing contractors are required to use and understand the latest manufacturer’s installation instructions prior to beginning system installation.

i. See Section 1.06 for manufacturer preinstallation meeting information.

ii. Chamber products must be designed and installed in accordance with the manufacturer’s minimum requirements. Failure to do so will void the manufacturer’s limited warranty.

iii. The contractor shall install all drainage structures, pipe, and chambers in the locations shown on the design engineer’s drawings and/or as approved by the Owner. Pipe shall be of the type and sizes specified on the drawings and shall be laid accurately to line and grade. Structures shall be accurately located and properly oriented.

b. Chambers, pipe, and drainage structures shall be inspected prior to installation, and any defective or damaged product shall be replaced accordingly.

c. Contact local underground utility companies prior to construction.

d. The contractor must apply erosion and sediment control measures to protect the stormwater system during all phases of site construction per local codes and design engineer’s specifications.

704-3.2 Site Preparation.

a. Excavation must be free of standing water. Dewatering measures must be taken if required.

i. When groundwater is present in the work area, dewater to maintain stability of in-situ and imported materials. Maintain water level below pipe bedding and foundation to provide a stable trench bottom.

b. Prepare the chamber bed’s subgrade soil as outlined in the engineer’s

Item D-704 Modular Buried Stormwater Storage Units 8 drawings. Requirements for subgrade soil bearing capacity shall meet or exceed the chamber manufacturer’s required allowable subgrade soil bearing capacity. The contractor must report any discrepancies with subgrade soil’s bearing capacity to the design engineer.

704-4.1 Chamber Installation and Backfilling.

A. Install chamber system flat or at constant slope between points and elevations indicated.

B. Construct fabric and stone foundation per chamber manufacturer’s installation instructions.

C. Construct the chamber bed by joining the chambers lengthwise in rows. Attach chambers by overlapping the end corrugation of one chamber onto the end corrugation of the last chamber in the row.

D. See pipe manufacturer’s installation instructions for pipe assembly.

E. Stone placement between chamber rows and around perimeter must follow instructions as indicated in the most current version of the chamber manufacturer’s installation instructions.

F. The contractor must refer to the chamber manufacturer’s installation instructions for a table of acceptable vehicle loads at various depths of cover. The contractor is responsible for preventing vehicles that exceed the chamber manufacturer’s requirements from traveling across or parking over the chamber system. Temporary fencing, warning tape, and appropriately located signs are commonly used to prevent unauthorized vehicles from entering sensitive construction areas.

G. Refer to the chamber manufacturer’s installation instructions for minimum requirements for backfill material above the stormwater chamber system.

H. See pipe manufacturer’s installation instructions for guidance on installing the plastic pipe fittings to the chamber system.

704-4.2 Protection.

A. Protect all inlets to the stormwater chamber system during construction. As noted in Section 2.05, pipe plugs in the inlet manhole pipes or FlexStorm Catch It inlet filters may be used to prevent construction sediments from clogging the system. Once construction has ceased, the pipe plugs are removed to allow normal system functionality.

B. All inlet and outlet structures should be protected against construction sediments.

704-4.3 Inspection and Maintenance.

A. As noted in Section 2.02, chambers may incorporate an optional inspection port to allow for inspection of the stormwater system during normal operations.

a. Inspection can also be accomplished through the inlet manhole connected to the Isolator Row PLUS, which may require confined space entry certification of the inspector.

B. Refer to the chamber manufacturer’s Isolator Row PLUS Operation and

Item D-704 Modular Buried Stormwater Storage Units 9

Maintenance manual for guidance on inspection intervals during normal system operation.

C. Maintenance of the Isolator Row PLUS shall utilize a JetVac process to remove sediments that have accumulated over time.

METHOD OF MEASURMENT

704-5.1 Measurement. Measurement for work shall be made based on the system’s storage cubic footage for items outlined and specified in the contract documents, to include all incidentals, for work installed, in-place and accepted by the Owner.

BASIS OF PAYMENT

704-6.1 Payment. Full compensation for conforming to the requirements of this Bid Item, “D-704 – Modular Buried Stormwater Storage Units” including furnishing all labor, tools, equipment, documentation, and materials for doing the work, including excavation and backfill, shall be included in the contract price bid, and no additional compensation with be allowed.

END OF SECTION D-704

Item D-706 HDPE Storm Drain Pipe 1

Item D-706 HDPE Storm Drain Pipe

706-1.1 Saw Cutting Existing Improvements. The saw cutting of existing pavement within Work limits shall be performed by the Contractor using equipment which; will not injure or endanger nearby improvements of any type. The existing curb, gutter, and sidewalk shall be removed to the nearest joint or score line if the saw cut is four (4) feet or less from the joint or score line. When saw cutting and joining to an existing cross gutter, the Contractor shall install number 5 dowels and twelve (12) inches on center. The dowels shall be a minimum of twelve (12) inches long with six (6) inches epoxied into the existing cross gutter. The Contractor shall remove and dispose of outside of the right-of-way all damaged existing improvements caused by the Contractor’s operations.

706-2.1 Dewatering of Trenches and Excavations. If groundwater is encountered, all trenches and excavations shall be dewatered to maintain a water level minimum four (4) feet below the trench bottom.

Such dewatering shall continue uninterrupted during all construction, curing and backfilling operations.

Water derived from dewatering shall not be discharged so that it flows across traffic lanes. Water shall be conveyed to street gutters by temporary hoses or pipes. Such hoses and pipes shall not cross traffic lanes.

The Contractor shall be responsible to verify the groundwater elevation. (See Section 1800 for compliance with SWPPP) A discharge permit is required for dewatering ground water and discharging it to the storm drain system.

Dewatering shall consist of removal of surface water and/or ground water and/or water from existing or abandon pipes from the construction site as needed to perform the required construction in accordance with the specification.

The Contractor shall comply with the NPDES Municipal Storm Water permit by designing a plan/system of plans to prevent the discharge of pollutants onto Airport owned storm drains, channels or natural water courses. The dewatering “plan/system of plans” consists of setting forth control of excavation, site runoff, including erosion sediments, and construction related pollutants.

The Contractor shall submit a site drawing with details, notes and related documents that identify the measure taken to:

(a) Control erosion and prevent sediment and construction related pollutants from being carried off site by storm water.

(b) Prevent non-storm water discharges from entering the storm drain system unless it is permitted.

706-3.1 Trench Excavation. The trench excavations shall be open cut wherever possible and shall conform to Subsection 306-3 of the Standard Specifications. The trench shall be excavated to the lines and depths indicated on the Plans or approved by the Engineer. The trench bottom shall be graded to provide a smooth, straight, firm, and stable foundation at every point throughout the length of the pipe.

Unless otherwise specified in the plans sand bedding shall be used a minimum of six inches (6”) below the pipe and be of approved excavated material with a sand equivalent of 30 or more. At each joint in the pipe, the bottom of the trench shall be recessed in such a manner as to relieve the bell or coupling from all

Item D-706 HDPE Storm Drain Pipe 2 load and to insure continuous bearing along the pipe barrel. This recess shall also be large enough to prevent foreign material from entering the pipe.

Tunneling or boring may be permitted on written approval of the Engineer, if indicated by economy of construction or necessity of preserving existing improvements. Pipelines to be installed beneath sidewalks, driveways, cross gutters, curb and gutters, concrete drainage channels, and other utilities shall be constructed by hand dig tunnels as designated on the drawings. If the earth in the tunnel sloughs off, the roof of the tunnel shall be broken down and excavated as an open trench, if directed by the Engineer.

Excavated material shall be neatly placed and kept shaped so as to cause the least possible interference with public travel. Toe boards at least twelve (12) inches high shall be placed along the traffic side of excavated material stockpiles placed in or adjacent to traveled lanes. Free access must be provided to all fire hydrants, water valves, meters and private drives. The Contractor shall control grading to prevent surface water from running into excavations. Obstruction of normal surface drainage shall be avoided and means shall be provided whereby storm and waste water can flow uninterrupted in existing ditches, culverts, other surface drains or in temporary drains.

All excess excavated material shall become the property of the Contractor and shall be removed from the site and disposed of by it at its own expense.

This work shall consist of performing all operations necessary to excavate all materials (such as: asphalt concrete, concrete pavement, aggregate base, cement treated base, cement modified soil, abandoned utility lines or facilities, etc.) regardless of the varying existing thicknesses, character and subsurface conditions, and no separate payment will be made therefor.

706-4.1 Maximum Length of Open Trench. No more trench shall be opened in advance of pipe laying than is necessary to expedite the work.

706-5.1 Over Excavation. The depth of trench excavation is the vertical distance between original ground and the bottom of the trench as shown on the plan.

Increased depth due to unsuitable material or rock or other unyielding material below the planned grade, and the depth of the pipe offset due to utility crossing as shown on the plans are not considered in determining the depth of over-excavation.

Over-excavation includes the removal of any material that comes into an excavation from outside the described limits and the Contractor requested an adjustment for the increased depth and/or the Engineer requested an adjustment for the increased depth. All work shall be authorized by the Engineer.

Payment for over-excavation shall be considered as included in the payment for Unclassified Excavation (Over-Excavation). The payment quantity is the volume of over-excavated material.

706-6.1 Trench Safety. For protection of workers during excavation, perform trench safety per Section 1902 of these Specifications and Special Provisions.

706-7.1 Pipe Bedding. Unless specified otherwise in the construction plans, sand bedding shall be used in all pipe installations, except as noted in the Special Provision, to a minimum depth of six (6) inches below the bottom of the pipe to the pipe spring line. Where ordered by the Engineer or Inspector, additional bedding will be required. Bedding material shall be composed of imported materials with a

Item D-706 HDPE Storm Drain Pipe 3 sand equivalent of 30 or more, and free of silt, fines, vegetation, lumps and other deleterious material.

Only where additional bedding and over-excavation is ordered shall the Contractor receive additional compensation for such work and materials.

In the pipe zone, from the pipe spring line to twelve (12) inches above the top of the pipe, the fill shall be of approved excavated sand or imported sand with a sand equivalent of 30 minimum. The fill shall be carried up simultaneously on each side of the pipe without shifting the pipe. The relative density of fill within the pipe zone shall be ninety – five percent (95%) and shall be obtained by compaction with approved mechanical tampers in six (6) inch layers. Flooding or jettying shall not be used unless the backfill material and the adjacent native materials have a sand equivalent of not less than 30.

706-8.1 Backfill. Unless specified otherwise in the construction plans, the backfill on the pipe zone section twelve (12) inches above the top of pipe shall be with a minimum sand equivalent of 30 or greater in accordance with plan specification. The backfill zone material shall have a sand equivalent of 20 or more and shall be free from ashes, refuse, rocks, vegetable or organic material. Contractor shall use backfill alternative if native soil is below sand equivalent of 20.

Backfill zone shall be in accordance with plan specification except that the backfill of pipe trench on all major arterial streets shall be a one-sack cement slurry.

In the event the methods used by the Contractor do not accomplished the required compaction, the Engineer may require that the backfill be removed and replaced in six (6) inch layers and that each layer be moistened, tamped, rolled or otherwise compacted until the required compaction is obtained.

The Contractor will be held responsible for any displacement of pipes or other structures, any damage to them or any instability caused by improper depositing of backfill materials, or improper handling of tools or equipment.

706-9.1 Slurry Back Fill. The use of slurry cement backfill may be used as an alternate intermediate backfill material for trench excavation per the approval of the Engineer prior to placement. Slurry backfill material shall conform with Section 201-6 of SSPWC or Section 19-3.02E placement per Section 19- 3.03F.

The Owner does not adjust payment if the Contractor provided an alternate material for backfill.

706-10.1 Compaction Test. The relative compaction shall be in accordance with the ASTM D1557 Method and will be determined by a consultant retained by the Owner.

The Owner will obtain the services of a soils engineering consultant to make compaction tests throughout the length of the Work. All first tests (at each location) that meet the compaction requirements will be paid for by the Owner.

All locations that fail to meet the minimum compaction requirements shall be reworked and retested at the Contractor’s expense until the required compaction is verified to the satisfaction of the Engineer. The cost of any retesting will be deducted from the Contractor’s progress payments.

Item D-706 HDPE Storm Drain Pipe 4

MEASUREMENT AND PAYMENT

706-11.1 Measurement. Measurement for work shall be made based on linear feet complete for items outlined and specified in the contract documents, to include all incidentals, for work installed, in-place and accepted by the Owner.

703-12.1 Payment. Full compensation for conforming to the requirements of this Bid Item, “D-706– HDPE Storm Drain Pipe” including furnishing all labor, tools, equipment, and materials for doing the work shall be included in the contract price bid, and no additional compensation with be allowed.

END OF SECTOIN D-706

Item D-753 Hydrodynamic Separator 1

Item D-753 Hydrodynamic Separator

753-1.1 Work Included. The Contractor shall furnish all labor, materials, equipment and incidentals required to supply and install the stormwater treatment unit specified herein in accordance with the Drawing(s) and these specifications.

753-1.2 Quality Control Inspection. The quality of materials, the process of manufacture, and the finished sections shall be subject to inspection by the Engineer. Such inspection may be made at the place of manufacture, or on the worksite after delivery, or at both places, and shall be subject to rejection at any time if material conditions fail to meet substantially any of the specification requirements. If a Stormwater Treatment Unit is rejected after delivery to the site, it shall be marked for identification and removed from the site. The Stormwater Treatment Unit(s) which have been damaged beyond repair during delivery will be rejected and, if already installed, shall be repaired to the Engineer’s and manufacturer’s acceptance level, if permitted.

All sections shall be field inspected for general appearance, dimensions, soundness, etc.

753-1.3 Submittals. Plan, elevation, and profile dimensional drawings shall be submitted to the Engineer for review and approval. The Contractor shall be provided with the approved plan, elevation, and profile dimensional drawings.

MATERIALS

753-2.1 Materials and Design. Concrete structures shall be designed for H-20 traffic loading and applicable soil loads or as otherwise determined by a Licensed Professional Engineer. The materials and structural design of the devices shall be per ASTM C857 and ASTM C858.

1.The minimum compressive strength of the concrete in the manhole base, riser, and top sections shall be 4000 psi.

2.The minimum wall thickness shall be one twelfth of the internal diameter of the riser or largest cone diameter.

3.Cement shall conform to the requirements for Portland cement of Specification C150.

4.Aggregates shall conform to Specification C33, except that the requirement for gradation shall not apply.

5.Reinforcement shall consist of wire conforming to Specification A82 or Specification A496, of wire fabric conforming to Specification A185 or Specification A497, or of bars of Grade 40 steel conforming to Specification A615/A615M.

6.The access cover shall be designed for HS20-44 traffic loading and shall provide a minimum 30-inch clear opening.

7.All joints shall be waterproof with wrapped gaskets or sealed with a mastic treatment.

8.Any grout used within the system shall meet the ASTM C 1107 “Standard Specification for

Packaged Dry, Hydraulic-Cement Grout (Non-Shrink)”. Grades A, B and C at a pourable and

Item D-753 Hydrodynamic Separator 2 plastic consistency at 70ºF. CRD C 621 “Corps of Engineers Specification For Non-Shrink Grout.”

A. Plastic manhole structures shall be designed for H-20 traffic loading with the addition of a “top concrete slab and supporting concrete collar base. The plastic HP manhole structures should be made from impact modified copolymer polypropylene meeting the material requirements of ASTM F2764.

Gaskets shall be made of material meeting the requirements of ASTM F477.

B. Separator internals shall be substantially constructed of stainless steel, polyethylene or other thermoplastic material approved by the manufacturer.

C. Any reducer/adaptor to the mainline shall be installed with an exterior joining coupler. The joint coupler shall be Polyseal Pipe Coupler as manufactured by MarMac Manufacturing Company or an approved equal and shall be installed according to the manufacturer’s recommendations depending on mainline pipe material type.

753-2.2 Performance.

A. The stormwater treatment unit shall be either an inline or a bypass line unit capable of conveying 100% of the design peak flow. All systems that exceed the design peak flow should be placed in an bypass or “offline” configuration.

B. The stormwater treatment unit shall be designed to remove at least 50% or 80% of the suspended solids on an annual aggregate removal basis (contingent to the type and size of the sediment being removed). Said removal shall be based on full-scale third-party testing using NJCAT Test Sediment for 50% removal and OK-110 media gradation or equivalent for 80% removal. The 50% removal will be based on an influent of 200mg/L, and the 80% removal is based on 300mg/L influent.

C. The stormwater treatment unit shall consist of an assembly of (7) polyethylene baffles, (1) cylinder,

(1) weir plate and (4) threaded rods and brackets.

D. The stormwater treatment unit(s) head loss at the Peak Design Flow Rate shall not exceed the head loss specified by the Engineer.

E. The unit shall be designed to remove sediment particles as well as floating oils and debris.

F. Individual stormwater treatment systems shall have the Maximum Treatment Rate (MTR) and

Maximum Hydraulic Rate (MHR) provided by the manufacturer, and shall not significantly resuspend trapped sediments.

METHOD OF MEASURMENT

753-3.1 Measurement. Measurement for work shall be made based on complete installation of Bid Item “D-753 Hydrodynamic Separator” as specified in the contract documents, to include all incidentals, for work installed, in-place and accepted by the Owner.

BASIS OF PAYMENT

753-4.1 Payment. Full compensation for conforming to the requirements of this Bid Item, “D-753 Hydrodynamic Separator” including furnishing all labor, tools, equipment, documentation, and materials for doing the work shall be included in the contract price bid, and no additional compensation will be allowed.

END OF SECTOIN D-753

Item F-162 Chain-Link Fence

162-1.1 This item shall consist of furnishing and erecting a chain-link fence and/or gates in accordance with these specifications, the details shown on the plans, and in conformity with…