14-B-0004-0003.pdf

W68SBV33179460

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Low er Granite Waste Water Treatment

The purpose of this amendment is to revise the technical specifications. Please see "Summary of Changes" for additional information.

As a result of this amendment, the bid due date is now May 20, 2014 at 2:00PM.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 13-May-2014

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912EF-14-B-0004

X 9B. DATED (SEE ITEM 11)

10-Apr-2014

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

13-May-2014

CODE

USAED, WALLA WALLA - CONTRACTING DIV.

ELAINE M. VANDIVER

201 N. THIRD AVENUE

WALLA WALLA WA 99362-1876

W912EF 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EF-14-B-0004

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

AMENDMENT 0003

Revised Specifications:

1. Revised Section 33 32 13.14 55 “PACKAGED SEWAGE LIFT STATIONS, GRINDER PUMP TYPE,” paragraph 2.1.3.1 “Piping within the Wet Well.”

- New wording reads:

"Piping and fittings within the wet well shall be flanged 316L stainless steel, (minimum Schedule

10) or equal. All nuts, bolts, and accessories within the wet well shall be 316L stainless steel.

Circumferential butt welds shall be full penetration joints with smooth design contours and smooth weld bead profiles. After fabrication, all pipe, fittings and accessories shall be pickled and passivated, and scrubbed and washed until discoloration and possible iron picked up from manufacturing and fabrication are removed. Excessive weld deposits, slag, spatter, and projections shall be removed by grinding.”

2. Revised Section 02 41 00.00 55 “DEMOLITION AND DECONSTRUCTION,” paragraph 1.2.1.4 “Existing Wastewater Treatment Plant.”

- Added sentence on the end of the paragraph which reads:

“Contractor shall dispose of wastewater liquid and solids remaining at the existing wastewater treatment plant (after the plant shutdown) off-Government property in accordance with Federal, State, and local laws and regulations. The estimated amount of wastewater liquid and solids for disposal is approximately 37,000 gallons.”

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 16-May-2014 02:00 PM to 20-May-2014 02:00 PM.

(End of Summary of Changes)

Lower Granite Dam Wastewater Treatment W912EF-14-B-0004 Amend-0003

SECTION TABLE OF CONTENTS

DIVISION 33 - UTILITIES

SECTION 33 32 13.14 55

PACKAGED SEWAGE LIFT STATIONS, GRINDER PUMP TYPE

PART 1 GENERAL

1.1 REFERENCES

1.2 DESCRIPTION OF WORK

1.3 SUBMITTALS

1.4 DELIVERY, STORAGE, AND HANDLING OF MATERIALS

1.4.1 Delivery and Storage

1.4.2 Handling

1.5 EXCAVATION, TRENCHING, AND BACKFILLING

PART 2 PRODUCTS

2.1 PIPE AND FITTINGS

2.1.1 Ductile-Iron Pipe

2.1.2 PVC Plastic Pressure Pipe and Associated Fittings

2.1.3 Stainless Steel Pipe

2.1.3.1 Piping within the Wet Well

2.1.3.2 Piping Outside the Wet Well

2.1.4 Insulating Joints

2.1.5 Accessories

2.2 VALVES AND OTHER PIPING ACCESSORIES

2.2.1 Plug Valves in Valve Vault

2.2.2 Check Valves

2.2.3 Ball Valves

2.2.4 Pipe Support

2.2.4.1 Outside Wet Well

2.2.4.2 Inside Wet Well

2.2.5 Inside Drop Pipe and Bowl

2.2.5.1 Inside Drop Pipe

2.2.5.2 Inside Drop Bowl

2.2.6 Quick Disconnect System with Hydraulic Sealing Flange

2.2.7 Wet Well Vent

2.2.8 Coupling Halves, Quick Disconnect, Cam-Locking Type

2.3 SUBMERSIBLE SEWAGE GRINDER PUMPS

2.3.1 Performance

2.3.2 Pump Design

2.3.3 Pump Construction

2.3.4 Cooling System

2.3.5 Cable Entry Seal

2.3.6 Motor

2.3.7 Bearings

2.3.8 Mechanical Seal

2.3.9 Pump Shaft

2.3.10 Impeller

2.3.11 Volute

2.3.12 Pump Protection System

SECTION 33 32 13.14 55

g4edddca Line

2.4 PUMP CONTROL SYSTEM

2.4.1 Enclosure

2.4.2 Liquid Level Float Switches

2.4.2.1 Float Switches

2.4.2.2 Mounting Hardware

2.4.3 Panel Equipment and Components

2.4.3.1 Programmable Logic Controllers

2.4.3.2 Motor Controls, General

2.4.3.3 Motor Controls Elements

2.4.3.4 Nameplates

2.4.3.5 Indicating Lights

2.4.3.6 Push-Buttons and Selector Switches

2.4.3.7 Relays, Control

2.4.3.8 Relays, Power Fail

2.4.3.9 Relays, Probe

2.4.3.10 Relays, Time Delay

2.4.3.11 Terminal and Distribution Blocks

2.4.3.12 Pump Seal Leak and Temperature Monitor Relays

2.5 UNDERGROUND EQUIPMENT ENCLOSURE

2.5.1 Access Frame, Cover, and Guide Rails

2.5.1.1 Access Door Frame and Cover

2.5.1.2 Guide Rails

2.5.2 Wet Well

2.5.2.1 Precast Concrete Structure

2.5.2.2 Coatings for Precast Concrete Structure

2.5.2.3 Cement Grout

2.5.3 Valve and Flow Meter Vault

2.5.3.1 Ladder

2.5.3.2 Extension Post

2.5.3.3 Dissimilar Metals

2.6 PRESSURE GAUGES

2.7 PIPE PENETRATIONS AND CONNECTIONS

2.7.1 Mechanical Annular Seal

2.7.2 Flexible Pipe Connectors

2.8 PORTABLE HOIST

2.9 PIPE AND VALVE IDENTIFICATION

2.9.1 Pipe Markers and Accessories

2.9.2 Pipe Service Identification Tags

2.9.3 Valve Service Identification Tag

2.9.4 Valve Service Identification Chart Frames

2.10 BYPASS PUMPING

2.10.1 Pumps

2.10.2 Piping

2.10.3 Vactor or Sewer Pump Trucking

PART 3 EXECUTION

3.1 TRENCHING AND SITE WORK

3.2 BURIED PIPING INSTALLATION

3.3 EXPOSED PIPING INSTALLATION

3.3.1 Anchors and Fasteners

3.3.1.1 Drilled-In Expansion Anchors and Fasteners

3.3.1.2 Drilled-In Adhesive Anchors

3.3.2 Valve Installation

3.3.2.1 Location

3.3.2.2 Valve Preparation and Orientation

3.3.2.3 Buried Valve Installation

3.3.3 Pipe Flanges

3.3.4 Steel Piping

SECTION 33 32 13.14 55

3.3.5 Connecting Dissimilar Pipe

3.3.6 Pipe Penetrations

3.4 PIPING SUPPORT SYSTEMS INSTALLATION

3.4.1 General Support Requirements

3.4.2 Dielectric Barriers

3.4.3 Support Spacing

3.5 PUMP SYSTEM OPERATION AND CONTROL

3.5.1 General Operation

3.5.2 Control Panel Devices

3.5.3 Operation Display

3.5.4 Alarm Capabilities

3.5.5 Central Operator Station Alarms and Status Indications

3.5.6 Initial Float Placement

3.6 INSTALLATION OF PIPE AND VALVE IDENTIFICATION

3.6.1 Installation

3.6.2 Piping Identification Schedule

3.6.3 Valve Identification Schedule

3.7 EQUIPMENT AND APPURTENANCE INSTALLATION

3.7.1 Ladder and Extension Post

3.7.1.1 General Installation Requirements

3.7.1.2 Workmanship

3.7.1.3 Anchorage, Fastenings, and Connections

3.7.1.4 Welding

3.8 COATINGS

3.8.1 Preparation of Concrete Surfaces

3.8.2 Application

3.8.3 Inspection

3.8.4 Coating Schedule

3.8.4.1 Wet well Interior

3.8.4.2 Wet well Exterior

3.9 FIELD QUALITY CONTROL

3.9.1 Field Tests and Inspections

3.9.2 Buried Piping

3.9.3 Exposed Piping

3.9.3.1 Hydrostatic Leakage Testing for Rigid Piping

3.9.3.2 Time for Making Test

3.9.4 Lift Station Operation

3.9.4.1 Commissioning

3.9.4.2 Site Visit by Pump Manufacturer's Representative

3.10 BYPASS PUMPING

3.10.1 General

3.10.2 Operating Requirements

3.10.3 Field Quality Assurances

3.10.4 Bypass Installation

3.10.5 Vactor or Sewer Pump Trucking Operations

3.11 CLEANING

-- End of Section Table of Contents --

SECTION 33 32 13.14 55

PACKAGED SEWAGE LIFT STATIONS, GRINDER PUMP TYPE

PART 1 GENERAL

1.1 REFERENCES

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

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 198 (2010) Standard Specification for Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2012; Errata 2011) Structural Welding Code - Steel

ASME INTERNATIONAL (ASME)

ASME A13.1 (2007) Scheme for the Identification of Piping Systems

ASME B1.20.1 (1983; R 2006) Pipe Threads, General Purpose (Inch)

ASME B16.11 (2011) Forged Fittings, Socket-Welding and Threaded

ASME B16.3 (2011) Malleable Iron Threaded Fittings, Classes 150 and 300

ASME B16.34 (2013) Valves - Flanged, Threaded and Welding End

ASME B31.3 (2012) Process Piping

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2012) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A479/A479M (2013a) Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

ASTM A48/A48M (2003; R 2012) Standard Specification for Gray Iron Castings

ASTM A53/A53M (2012) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A536 (1984; R 2009) Standard Specification for Ductile Iron Castings

ASTM A615/A615M (2012) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

ASTM B633 (2013) Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

ASTM C413 (2011; R 2012) Absorption of Chemical-Resistant Mortars, Grouts, and Monolithic Surfacings and Polymer Concretes

ASTM C443 (2011) Standard Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets

ASTM C478 (2013) Standard Specification for Precast Reinforced Concrete Manhole Sections

ASTM C531 (2000; R 2012) Linear Shrinkage and Coefficient of Thermal Expansion of Chemical-Resistant Mortars, Grouts, and Monolithic Surfacings, and Polymer Concretes

ASTM C579 (2001; R 2012) Compressive Strength of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes

ASTM C923 (2008) Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes and Laterals

ASTM D1187/D1187M (1997; E 2011; R 2011) Asphalt-Base Emulsions for Use as Protective Coatings for Metal

ASTM D4585 (2013) Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation

ASTM D7234 (2005) Historical Standard: ASTM D7234-05 Standard Test Method for Pull-Off Adhesion Strength of Coatings on Concrete Using Portable Pull-Off Adhesion Testers

ASTM D870 (2009) Standard Practice for Testing Water Resistance of Coatings Using Water Immersion

ASTM F1869 (2011) Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride

ASTM F2170 (2011) Determining Relative Humidity in Concrete Floor Slabs in situ Probes

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

CID A-A-59326 (Rev D) General Specification For Coupling Halves, Quick-Disconnect, Cam-Locking Type

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-58 (2009) Pipe Hangers and Supports - Materials, Design and Manufacture, Selection, Application, and Installation

MSS SP-69 (2003) Pipe Hangers and Supports - Selection and Application (ANSI Approved American National Standard)

MASTER PAINTERS INSTITUTE (MPI)

MPI 79 (Oct 2009) Alkyd Anti-Corrosive Metal Primer

NACE INTERNATIONAL (NACE)

NACE SP0188 (1999; R 2006) Discontinuity (Holiday) Testing of New Protective Coatings on Conductive Substrates

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2014) National Electrical Code

THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC PA 2 (2012) Measurement of Dry Coating Thickness With Magnetic Gages

SSPC SP 13/NACE No.6 Surface Preparation of Concrete

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

29 CFR 1910.27 Fixed Ladders

1.2 DESCRIPTION OF WORK

The work includes providing submersible sewage grinder pump station, valve and flow meter vault, and related work for construction of the Main Lift Station. Provide system complete and ready for operations. Grinder pump station and vault systems including equipment, materials, installation, and workmanship as specified herein. Construction of this lift station will require demolition and deconstruction of the existing Main Lift Station and bypass pumping from Manhole No. 2 to the existing wastewater treatment plant. Provide a temporary pumping system for the purpose of diverting the existing wastewater flow around the work area for the duration of the Main Lift Station installation. Sewage flow currently averages 1,350 gallons per day (gpd) with peak day flows up to approximately 2,300 gpd.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals having an "I" designation are for information only. Designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Bypass Pumping Plan; G, GT

Proposed bypass system design, installation, and operation.

SD-02 Shop Drawings

Pump Control System; G, AE

Include wiring and control diagrams and proposed control sequence and alarm notification for system.

Wet Well; G, AE

Include information on precast concrete structure and location for pump installation within the wet well and any modifications to the wet well (ie., grout placement).

SD-03 Product Data

Pipe and Fittings; G, AE Plug Valves; G, AE Check valves; G, AE

Submersible sewage grinder pumps; G, AE

Include materials of construction, pump performance curves, typical shop drawings, motor information showing dimensions and cross-sectional views of pumps and appurtenances.

Valve and flow meter vault; G, AE

Access Door Frame and Cover; G, AE

Coatings for Precast Concrete Structure; G, AE

Ladder; G, AE

Mechanical Annular Seal; G, AE

Portable Hoist; G, AE

Flexible Pipe Connectors; G, AE

Pipe and Valve Identification; G, GT

SD-10 Operation and Maintenance Data

Submersible Sewage Grinder Pumps Data Package 5; G, AE

Submit in accordance with Section 01 78 23.00 28 OPERATION AND

MAINTENANCE DATA.

Include pumps, alarms, and motors. Include all information on all equipment, alarm panel and controls, pumps and pump performance curves, and station layout in data for submersible sewage grinder pump station and valve and flow meter vault.

1.4 DELIVERY, STORAGE, AND HANDLING OF MATERIALS

1.4.1 Delivery and Storage

Inspect materials delivered to site for damage. Unload and store with minimum handling. Store materials in enclosures or under protective covering. Store rubber gaskets not to be installed immediately under cover, out of direct sunlight. Do not store materials directly on the ground. Keep interior of pipes and fittings free of dirt and debris.

1.4.2 Handling

Handle pipe, fittings, valves, and other accessories in such manner as to ensure delivery to the trench in sound, undamaged condition. Avoid injury to coatings and linings on pipe and fittings; make satisfactory repairs if coatings or linings are damaged. Carry pipe to the trench; do not drag it.

1.5 EXCAVATION, TRENCHING, AND BACKFILLING

Provide in accordance with Section 31 00 00.00 55 EARTHWORK, except as specified herein.

PART 2 PRODUCTS

2.1 PIPE AND FITTINGS

Provide pressure piping, air release valves, and related accessories for force main piping outside the sewage wet well and valve and flow meter vaults in accordance with Section 33 30 00.00 55 SANITARY SEWERS.

2.1.1 Ductile-Iron Pipe

Conform to the requirements of Section 33 30 00.00 55 SANITARY SEWERS.

2.1.2 PVC Plastic Pressure Pipe and Associated Fittings

Conform to the requirements of Section 33 30 00.00 55 SANITARY SEWERS.

2.1.3 Stainless Steel Pipe

2.1.3.1 Piping within the Wet Well

Piping and fittings within the wet well shall be flanged 316L stainless steel, (minimum Schedule 10) or equal. All nuts, bolts, and accessories within the wet well shall be 316L stainless steel. Circumferential butt welds shall be full penetration joints with smooth design contours and

SECTION 33 32 13.14 55

smooth weld bead profiles. After fabrication, all pipe, fittings and accessories shall be pickled and passivated, and scrubbed and washed until discoloration and possible iron picked up from manufacturing and fabrication are removed. Excessive weld deposits, slag, spatter, and projections shall be removed by grinding

2.1.3.2 Piping Outside the Wet Well

Pipe and fittings outside of the wet well and above ground shall be 316 stainless steel (flanged, schedule 10 with no butt-welds). All bolts, washers, and nuts shall be 316 stainless steel, threaded and shall be coated with "Never Seize" type coating.

2.1.4 Insulating Joints

Provide between pipes of dissimilar metals a rubber gasket or other approved type of insulating joint or dielectric coupling to effectively prevent metal-to-metal contact between adjacent sections of piping.

2.1.5 Accessories

Provide flanges, connecting pieces, transition glands, transition sleeves, and other adapters as required.

2.2 VALVES AND OTHER PIPING ACCESSORIES

2.2.1 Plug Valves in Valve Vault

Conform to the requirements of Section 33 30 00.00 55 SANITARY SEWERS.

2.2.2 Check Valves

Check valves shall be rubber flapper swing check type having ductile iron, ASTM A536 Grade 65-45-12, body and cover. The body shall be long pattern design (not wafer) with integrally cast-on end flanges. The flapper shall be Buna N having an O-ring seating edge and be internally reinforced with steel. Flapper to be captured between the body and the body cover in a manner to permit the flapper to flex from closed to full open position.

Flapper shall be easily removed without the need to remove the valve from line. Check valves to have full pipe size flow area. Seating surface to be on an approximate 45 degree angle requiring the flapper to travel only 35 degrees from closed to full open position for minimum head loss. Valve shall have non-slam closure characteristics. Valve shall be provided with manual operation backflow actuator. Valve shall be designed for 175 psi differential pressure for water, sewage, oil, or gas. The valve shall be suitable for buried service, in which case, stainless cover bolts must be furnished. Valve shall be coated with fusion bonded epoxy coating. Valve shall be APCO Series 100 Rubber Flapper Swing Check Valve, Val Matic Swing Flex, or equal.

2.2.3 Ball Valves

Ball valves, 2 inch and smaller, shall be end entry type, two piece bronze body, and threaded, in accordance with ASME B1.20.1, full bore regular ports. Valves shall have polytetrafluoroethylene (PTTFE) seats and packing, T316 stainless steel balls and T304 stainless steel hand lever operators.

Valves shall be rated for 1,000 psig service at 150 degrees F and shall conform to ASME B16.34 Class 150. A union shall be installed adjacent to the valve to provide access to the seat, where shown on the Drawings or as

SECTION 33 32 13.14 55

required.

2.2.4 Pipe Support

2.2.4.1 Outside Wet Well

Use pipe support schedule 40 galvanized steel piping conforming to ASTM A53/A53M. Provide either ASME B16.3 or ASME B16.11 galvanized threaded fittings.

2.2.4.2 Inside Wet Well

Use 316 stainless steel bolts, nuts, washers, anchors, and supports for installation of equipment and piping.

2.2.5 Inside Drop Pipe and Bowl

2.2.5.1 Inside Drop Pipe

Inside drop pipe shall conform to the requirements of Section 33 30 00.00 55 SANITARY SEWERS. The drop pipe and drop bowl shall be connected with a mechanical coupling in conformance with Section 33 30 00.00 55 SANITARY SEWERS or the drop bowl manufacturer's recommendations or equal.

2.2.5.2 Inside Drop Bowl

The inside drop bowl shall be fabricated in marine grade fiberglass, finished in bright white gel coat, and be of a suitable design for the proposed installation. The inside drop bowl shall be a Reliner Inside Drop System as manufactured by Reliner/Duran, Inc., or equal. The drop bowl shall be installed with the manufacturer's recommended stainless steel fasteners and adjustable clamping brackets.

2.2.6 Quick Disconnect System with Hydraulic Sealing Flange

Use quick disconnect system consisting of a steel base plate for supporting the pumps, a hydraulic sealing flange, pump guide rails and the discharge pipe supports. Use two guide rails of galvanized steel in accordance with ASTM A123/A123M. Provide a steel lifting chain for raising and lowering the pump in the basin. Build guides onto pump housing to fit the guide post to assure perfect alignment between pump and guide rails.

2.2.7 Wet Well Vent

Galvanized ASTM A53/A53M pipe with insect screening.

2.2.8 Coupling Halves, Quick Disconnect, Cam-Locking Type

Provide quick disconnect, cam-locking coupling halves and fittings in conformance with CID A-A-59326 and as shown on the Drawings. Coupling halves and accessories shall be Class SS (Stainless Steel), minimum working pressure of 150 psi, and suitable for use with suction hoses, discharge hoses, and various fittings and manifolds for the conveyance of untreated wastewater.

2.3 SUBMERSIBLE SEWAGE GRINDER PUMPS

Provide submersible sewage pumps with grinder units capable of grinding all materials found in normal domestic sewage including plastics, rubber, sanitary napkins, disposal diapers, and wooden articles into a finely ground slurry with particle dimensions no greater than 1/4 inch.

2.3.1 Performance

Furnish and install two submersible wastewater grinder pump(s) with the flowing performance characteristics:

Capacity and Head 80 gpm at 70 feet TDH

Speed 3,450 rpm nominal

Motor Horsepower 6 horsepower

Efficiency 33.5 percent

Service Factor 1.15

Electric Power Characteristics 3-phase, 480V, 60 Hz

2.3.2 Pump Design

Each grinder pump shall be a heavy duty pump modified to be used as a grinder. Each grinder pump shall contain special cutters to reduce sewage to fine slurry. The stationary cutter shall consist of hardened 316 "L" stainless steel and the rotary cutter shall consist of chrome alloyed cast iron. The cutter materials shall provide maximum corrosion and abrasion resistance. The remaining portion of the grinder pumps, with the exception of seal materials and wet end, shall be similar to the heavy duty pumps used in larger pump stations for daily operation.

The grinder pumps shall be automatically and firmly connected to the discharge connection, guided by no less than two guide bars extending from the top of the station to the discharge connection. There shall be no need for personnel to enter the wet well. Sealing of the pumping unit to the discharge connection shall be accomplished by a machined metal to metal watertight contact. Sealing of the discharge interface with a diaphragm, O-ring or profile gasket will not be acceptable. No portion of the pump shall bear directly on the sump floor.

Suitable pumps include Flygt MP3102 HT3 267 and ABS Piranha PIR PE 35/2W-C, 60 Hz.

2.3.3 Pump Construction

Major pump components shall be of grey cast iron, ASTM A48/A48M, Class 35B, with smooth surfaces devoid of blow holes or other irregularities. The lifting handle shall be of stainless steel. All exposed nuts or bolts shall be Type 316 stainless steel construction. All metal surfaces coming into contact with the pumpage, other than stainless steel or brass, shall be protected by a factory applied spray coating of acrylic dispersion zinc phosphate primer with a polyester resin paint finish on the exterior of the pump.

Sealing design shall incorporate metal-to-metal contact between machined surfaces. Critical mating surfaces where watertight sealing is required shall be machined and fitted with Nitrile rubber O-rings. Fittings will be the result of controlled compression of rubber O-rings in two planes and

O-ring contact of four sides without the requirement of a specific torque limit.

Rectangular cross sectioned gaskets requiring specific torque limits to achieve compression shall not be considered as adequate or equal. No secondary sealing compounds, elliptical O-rings, grease, or other devices shall be used.

2.3.4 Cooling System

Motors are sufficiently cooled by the surrounding environment or pumped media. A water jacket is not required.

2.3.5 Cable Entry Seal

The cable entry seal design shall preclude specific torque requirements to insure a watertight and submersible seal. The cable entry shall consist of a single cylindrical elastomer grommet, flanked by washers, all having a close tolerance fit against the cable outside diameter and the entry inside diameter and compressed by the body containing a strain relief function, separate from the function of sealing the cable. The assembly shall provide ease of changing the cable when necessary using the same entry seal. The cable entry junction chamber and motor shall be separated by a stator lead sealing gland or terminal board, which shall isolate the interior from foreign material gaining access through the pump top.

Epoxies, silicones, or other secondary sealing systems shall not be considered acceptable.

2.3.6 Motor

The pump motor shall be an explosion proof FM approved, induction type with a squirrel cage rotor, shell type design, housed in an air filled, watertight chamber. The stator windings shall be insulated with moisture resistant Class H insulation rated for 356 degrees F. The stator shall be insulated by the trickle impregnation method using Class H monomer-free polyester resin resulting in a winding fill factor of at least 95 percent.

The motor shall be inverter duty rated in accordance with NEMA MG1, Part

31. The stator shall be heat-shrink fitted into the cast iron stator housing. The use of multiple step dip and bake-type stator insulation process is not acceptable. The use of bolts, pins or other fastening devices requiring penetration of the stator housing is not acceptable. The motor shall be designed for continuous duty handling pumped media of 104 degrees F and capable of no less than 30 evenly spaced starts per hour. The rotor bars and short circuit rings shall be made of cast aluminum. Thermal switches set to open at 260 degrees F shall be embedded in the stator end coils to monitor the temperature of each phase winding. These thermal switches shall be used in conjunction with and supplemental to external motor overload protection and shall be connected to the control panel. The junction chamber containing the terminal board, shall be hermetically sealed from the motor by an elastomer compression seal. Connection between the cable conductors and stator leads shall be made with threaded compression type binding posts permanently affixed to a terminal board. The motor and the pump shall be produced by the same manufacturer.

The combined service factor (combined effect of voltage, frequency and specific gravity) shall be a minimum of 1.15. The motor shall have a voltage tolerance of +/- 10 percent. The motor shall be designed for operation up to 104 degrees F ambient and with a temperature rise not to exceed 176 degrees F. A performance chart shall be provided upon request showing curves for torque, current, power factor, input/output kW, and efficiency. This chart shall also include data on starting and no-load characteristics.

The power cable shall be sized according to the NFPA 70 standards and shall be of sufficient length to reach the junction box without the need of any splices. The outer jacket of the cable shall be oil resistant chlorinated polyethylene rubber. The motor and cable shall be capable of continuous submergence underwater without loss of watertight integrity to a depth of 65 feet or greater. Cable shall be approved for use in explosion proof applications.

The motor horsepower shall be adequate so that the pump is non-overloading throughout the entire pump performance curve from shut-off through run-out.

2.3.7 Bearings

The pump shaft shall rotate on two bearings. Motor bearings shall be permanently grease lubricated. The upper bearing shall be a single deep groove ball bearing. The lower bearing shall be a two row angular contact bearing to compensate for axial thrust and radial forces. Sleeve or single row lower bearings are not acceptable.

2.3.8 Mechanical Seal

Each pump shall be provided with a tandem mechanical shaft seal system consisting of two totally independent seal assemblies. The seals shall operate in a lubricant reservoir that hydro dynamically lubricates the lapped seal faces at a constant rate. The lower, primary seal unit, located between the pump and the lubricant chamber, shall contain one stationary tungsten-carbide ring and one positively driven rotating ceramic ring. The upper, secondary seal unit, located between the lubricant chamber and the motor housing, shall contain one stationary ceramic seal ring and one positively driven rotating carbon seal ring. Each seal interface shall be held in contact by its own spring system. The seals shall require neither maintenance nor adjustment nor depend on direction of rotation for sealing. The position of both mechanical seals shall depend on the shaft. Mounting of the lower mechanical seal on the impeller hub will not be acceptable. For special applications, other seal face materials shall be available.

The following seal types shall not be considered acceptable or equal to the dual independent seal specified: shaft seals without positively driven rotating members, or conventional double mechanical seals containing either a common single or double spring acting between the upper and lower seal faces. No system requiring a pressure differential to offset pressure and to affect sealing shall be used.

Each pump shall be provided with a lubricant chamber for the shaft sealing system. The lubricant chamber shall be designed to prevent overfilling and to provide lubricant expansion capacity. The drain and inspection plug, with positive anti-leak seal shall be easily accessible from the outside.

The seal system shall not rely upon the pumped media for lubrication. The motor shall be able to operate dry without damage while pumping under load.

Seal lubricant shall be FDA Approved, nontoxic.

2.3.9 Pump Shaft

Pump and motor shaft shall be the same unit. The pump shaft is an extension of the motor shaft. Couplings shall not be acceptable. The shaft shall be stainless steel ASTM A479/A479M S43100-T.

If a shaft material of lower quality than stainless steel ASTM A479/A479M S43100-T is used, a shaft sleeve of stainless steel ASTM A479/A479M S43100-T is used to protect the shaft material. However, shaft sleeves only protect the shaft around the lower mechanical seal. No protection is provided in the oil housing and above. Therefore, the use of stainless steel sleeves will not be considered equal to stainless steel shafts.

2.3.10 Impeller

The impeller(s) shall be of gray cast iron, Class 35B, dynamically balanced, single shrouded design having a long throughlet without acute turns. The impellers shall be capable of handling fine slurry from the special cutters. Impeller(s) shall be taper collet fitted and retained with an Allen head bolt. All impellers shall be coated with an acrylic dispersion zinc phosphate primer.

2.3.11 Volute

Pump volute(s) shall be single-piece grey cast iron, Class 35B, non-concentric design with smooth passages large enough to pass any media that may enter the impeller. Minimum inlet and discharge size shall be as specified.

2.3.12 Pump Protection System

All stators shall incorporate thermal switches in series to monitor the temperature of each phase winding. At 260 degrees F the thermal switches shall open, stop the motor, and activate an alarm.

A leakage sensor shall also be provided to detect water in the stator chamber. The Float Leakage Sensor (FLS) is a small float switch used to detect the presence of water in the stator chamber. When activated, the FLS will send an alarm and, if desired, stop the motor. Use of voltage sensitive solid state sensors and trip temperature above 260 degrees F shall not be allowed.

Provide manufacturer's recommended relay for over temperature protection and motor seal leakage. The pump supplier shall provide a protection relay for each pump supplied. The protection relay shall be installed in the pump control panel.

2.4 PUMP CONTROL SYSTEM

2.4.1 Enclosure

Furnish and install all equipment in a UL listed weatherproof NEMA type 4X enclosure, with dead front interior and hinged gasketed exterior doors in accordance with Section 40 95 13.00 55 CONTROL PANELS, DEVICES and HARDWARE. The enclosure shall contain the pump control panel, enclosure strip heater with heat shield and thermostat, and other accessories as shown on the Drawings or specified.

The electrical components to be installed inside the electrical service and pump control panel enclosure shall conform to the requirements of Section

26 05 00.00 55 GENERAL ELECTRIC WORK.

2.4.2 Liquid Level Float Switches

2.4.2.1 Float Switches

Provide five liquid level ball float switches designed for immersion in a wastewater stream to control the pump operations. Each ball float shall be a sealed mercury switch that is sealed with a polypropylene casing. Each switch shall have an integral PVC type STO cable with the length as required for connection to the terminal box. The float switch shall be provided with either a normally open (NO) or normally closed (NC) contact as required to operate the control equipment as specified. The hardware fittings shall be constructed of 316 stainless steel or equal. The liquid level float switches shall be Anchor Scientific Roto Float Type W or equal.

2.4.2.2 Mounting Hardware

The mounting hardware shall be compatible with the liquid level float switches and be constructed of 316 stainless steel. The hardware shall include stainless steel WRW bracket, vinyl coated stainless steel wire rope and rope clips, stainless steel float cable brackets, and vinyl coated cast iron anchor.

2.4.3 Panel Equipment and Components

2.4.3.1 Programmable Logic Controllers

Provide a PLC to monitor, control, and provide alarms related to the lift station operation. PLC shall be in conformance with the requirements of Section 40 94 43.01 55 PROGRAMMABLE LOGIC CONTROLLERS.

2.4.3.2 Motor Controls, General

Provide each motor with suitable motor controls and devices that will perform the functions as specified for the respective motors and in conformance with Section 26 24 19.00 55 MOTOR CONTROL CENTERS. Horsepower ratings are as shown on the plans. This information is for guidance only and does not limit the equipment size. When motors furnished differ from the expected ratings indicated, make the necessary adjustments to wiring, conduit, disconnect devices, motor starters, branch circuit protection, and other affected material or equipment to accommodate the motors actually installed, at no additional cost to the Government.

2.4.3.3 Motor Controls Elements

Each motor control system shall be equipped with a hand- off-auto control switch, indicating lights, elapsed time meter, motor starter, control transformer with primary fuses and secondary control power fuse.

a. Control switches and indicating lights shall be UL listed oil-tight devices rated heavy duty. Provide Allen Bradley, Eaton/Cutler Hammer, or equal.

b. Elapsed time meters shall be non-resettable with 0.0 to 99,999.9 readout. Provide Remington, Yokogawa, or equal.

c. Each motor starter shall be NEMA rated with an electrically held contactor and a single reset, 3 phase, overload relay with a normally closed holding contact and a normally open isolated contact for overload alarm. Each overload shall be ambient compensated and shall trip on 600 percent of full load current in less than 6 seconds. Each motor starter Size 3 and larger shall be furnished with a minimum of 4 auxiliary contacts and provisions for adding 2 more. Each overload relay shall have a test trip push button built-in and an adjustable calibrated trip with indicating dial. Overload relay manual reset shall be dead front door mounted, unbreakable steel operator, with insulated plastic foot for safety.

d. Control power transformers shall be sized as shown on the plans, minimum size shall be 100VA where not designated. Provide Micron, G.E., Hevi-Duty, or equal.

2.4.3.4 Nameplates

Nameplates shall be conform to the requirements of Section 26 05 00.00 55

GENERAL ELECTRIC WORK.

2.4.3.5 Indicating Lights

Furnish and install push-to-test lights to indicate status and alarm conditions locally as shown on the plans. Indicating lights shall be UL listed, oil-tight devices rated heavy duty. Provide Allen Bradley, Eaton/Cutler Hammer, or equal. Engraved roundel phenolic nameplates shall indicate specific function.

2.4.3.6 Push-Buttons and Selector Switches

Push-buttons, and selector switches, shall be UL listed, oil-tight devices rated heavy duty. Provide Allen Bradley, Eaton/Cutler Hammer or equal.

Engraved roundel phenolic nameplates shall indicate specific function.

2.4.3.7 Relays, Control

Control relays shall be Potter and Brumfield, IDEC or equal. Two form-C contacts rated at 10 amp minimum shall be provided on each relay. Provide relay with energized neon lamp inside relay case.

2.4.3.8 Relays, Power Fail

The power fail relay (PFR) shall continuously monitor the three phases for power loss, low voltage, phase loss, phase reversal, and have automatic reset. The power fail monitor shall have a drop-out voltage adjustment and a control and automatic contacts failure indicating LED. Power fail relay shall include auxiliary relay contacts for control and alarming.

2.4.3.9 Relays, Probe

Probe relays shall be provided for functions as specified and shown on the Drawings, i.e. moisture probes, motor over-temperature, etc. The pump manufacturer shall provide the moisture sensor and motor over temperature sensors. The relay shall be specifically designed for moisture and temperature moisture devices. The unit shall utilize low current (120 micro amps maximum) and low voltage (12 volts d-c maximum). Unit sensitivity shall allow pick-up on circuit closures of 100 K ohms or less.

2.4.3.10 Relays, Time Delay

Time delay relays shall be solid state relays with a timer adjustable over the range 1 to 60 seconds unless other ranges are indicated or required.

Provide LED relay energized indicator lamp.

2.4.3.11 Terminal and Distribution Blocks

Terminal blocks shall be furnished and installed in the control panel.

Terminal blocks shall be rated at 600V minimum, din rail mounted, nickel plated corrosion resistant. All wires must be terminated on a terminal block with no more than two conductors per terminal. No butt splices or wire nuts allowed within the control panel. Terminal blocks shall be Allen Bradley, Connectron, or equal. Power distribution blocks shall be furnished and installed in the control panel as required for distribution of the three-phase power.

2.4.3.12 Pump Seal Leak and Temperature Monitor Relays

Provide seal leak and temperature monitor relays for submersible pumps as recommended by the pump supplier. Monitor relays shall be compatible with pump sensors. Each detector shall initiate an alarm light and be locked on until reset by a pushbutton. In Class 1 Division 1 locations, the monitor relay shall be intrinsically safe if required by the pump manufacturer.

High temperature alarm shall not be initiated on loss of power. High temperature alarm shall shutdown the pump and keeps it locked out until the reset by pushbutton.

2.5 UNDERGROUND EQUIPMENT ENCLOSURE

2.5.1 Access Frame, Cover, and Guide Rails

2.5.1.1 Access Door Frame and Cover

Aluminum door access frame and cover, capable of supporting H-20 wheel loadings, shall be furnished and installed on the new wet well as shown on the Drawings. The wet well frame shall support the guide rails and a junction box for the pump wiring. The covers shall be provided with a lifting handle, safety latch to hold cover in the open position, locking hasp, and aluminum safety gate. The wet well access frame and hatch shall be sized per the pump manufacturer's recommendations. Access hatches shall be USF Fabrications, Halliday, or equal.

2.5.1.2 Guide Rails

Two inch diameter stainless steel guide rail(s) or approved cable system shall be installed. Intermediate stainless steel supports shall be provided as recommended by the pump supplier to ensure necessary rigidity.

Stainless steel lifting cables shall be provided for each pump. Stainless steel hook assemblies, discharge connection hardware, and upper guide brackets shall be provided. Each pump shall be fitted with 30 feet of stainless steel lifting chain or stainless steel cable. The working load of the lifting system shall be 50 percent greater than the pump unit weight. Padlocks will be supplied by the Owner.

2.5.2 Wet Well

Provide a precast concrete manhole structure as shown on the Drawings. The wet well, including lid and access hatch, shall be designed and constructed to support H-20 wheel loading.

2.5.2.1 Precast Concrete Structure

ASTM C478 Section 03 40 00.00 55 PLANT - PRECAST CONCRETE PRODUCTS FOR BELOW GRADE CONSTRUCTION and Section 33 30 00.00 55 SANITARY SEWERS except as specified herein. Provide precast concrete structures with a compressive strength of 4000 psi at 28 days and an air entrainment of 6 percent, plus, or minus 2 percent and a minimum wall thickness of 5 inches.

ASTM A615/A615M reinforcing bars. ASTM C443 or AASHTO M 198, Type B gaskets for joint connections. Use monolithic base and first riser.

2.5.2.2 Coatings for Precast Concrete Structure

a. Wet Well Interior/Exterior Surface Filler - coat with 100 percent solids, epoxy modified cementitious mortar suitable for surfacing, patching, and filling voids and bugholes in concrete substrates.

Coating shall be self-priming. Bond strength per ASTM D7234 shall be no less than 500 psi adhesion, average of three tests. Shrinkage shall be no more than 3.1 X 10-6 inches (80 micrometers) linear shrinkage, average of three tests ASTM C531. Compressive strength shall be no less than 7,100 psi, average three tests per ASTM C579. Tnemec Series 218 Mortarclad or equal.

b. Wet Well Interior Primer and Finish Coatings - coat with 100 percent solids, high-build epoxy, abrasion resistant coating specifically designed for wastewater immersion and fume environments. The coating shall be suited for application on cured concrete, provide low permeation of hydrogen sulfide gas, protects against microbiologically influenced corrosion, and provides chemical resistance to severe wastewater environments. The coatings will conform pass the Severe Wastewater Analysis Test, SWAT (65oC, 500 ppm H2S, 4000 ppm NaCl, 10 percent H2SO4) or equal test. Water adsorption of coating shall be no more than 0.07 percent in conformance with ASTM C413. Adhesion shall exceed cohesive strength of 4,000 psi concrete substrate per ASTM D7234 (20 mm dolly). No blistering, cracking or delamination of film after 1,500 hours of exposure to humidity per ASTM D4585 and 2,000 hours continuous immersion in deionized water at 140 degrees F per ASTM D870.

Tnemec Series 435 Perma-Glaze or equal.

c. Wet Well Exterior Finish Coating - coat with high solids modified polyamine epoxy coating suitable as a water proofing barrier for application on the wet well exterior. Tnemec Series 141 PotaPox or equal.

2.5.2.3 Cement Grout

Cement grout for placement in the wet well shall be in conformance with the pump manufacturer's recommendations and Section 03 30 53.00 55

MISCELLANEOUS CAST-IN-PLACE CONCRETE.

2.5.3 Valve and Flow Meter Vault

Provide precast concrete valve vault and access hatch with the nominal dimensions as shown on the Drawings. The precast valve vault, including lid and access hatch shall be designed and constructed to support H-20 wheel loadings. The precast vault shall conform to the requirements of Section 03 40 00.00 55 PLANT-PRECAST CONCRETE PRODUCTS FOR BELOW GRADE

CONSTRUCTION.

2.5.3.1 Ladder

Ladder shall be constructed of aluminum or 304 stainless steel, or equal, mill finish, wall mounted, and properly sized in compliance with Section 7 of 29 CFR 1910.27. All mounting hardware shall be 316 stainless steel or equal.

2.5.3.2 Extension Post

Provide a removable extension post (approximately 4 feet 6 inches long to assist in descending into and ascending out of the vault. The removable extension post and bracket shall be constructed of either aluminum or 304 stainless steel (same material as ladder) mill finish, and allow easy mounting and dismounting of the removable extension rail. All mounting hardware shall be 316 stainless steel or equal. Acceptable products include Bilco LU-3 or LU-4, or Saf-T-Notch Removable Extension.

2.5.3.3 Dissimilar Metals

Where dissimilar metals are in contact, protect surfaces with MPI 79 or with dielectric fittings or isolation joints to prevent galvanic or corrosive action. Where aluminum is in contact with concrete or adsorptive materials subject to wetting, protect with ASTM D1187/D1187M, asphalt-base emulsion.

2.6 PRESSURE GAUGES

Pressure gauges for wastewater shall have stainless steel bourdon tube and movement with stainless steel bodies and polycarbonate lenses. Pressure gauges shall be glycerine-filled 500 series and shall be provided with throttling type needle valve or pulsation damper and shutoff valve.

2.7 PIPE PENETRATIONS AND CONNECTIONS

2.7.1 Mechanical Annular Seal

Annular seal connections to the valve vault and flow meter vault shall be annular, modular, mechanical seals, consisting of rubber links shaped to continuously fill the annular space between the pipe and wall opening.

There shall be sufficient quantity of links about the pipe that once expanded shall achieve 20 psi hydrostatic seal between the pipe and the structure. Elastomer element shall be EPDM. Pressure plates shall be molded glass reinforced nylon. Hardware shall be mild steel with a 74,000 psi minimum tensile strength and two-part zinc dichromate coating per ASTM B633 and organic coating or equal. Pipe connector shall be as manufactured by PSI/Thunderbird/Link-Seal or equal.

2.7.2 Flexible Pipe Connectors

Flexible pipe connectors shall be of a design that provides a flexible, watertight seal between the pipe and the concrete structure. The connector shall consist of a rubber gasket, an internal expansion sleeve, and one or more external compression take-up clamps. The rubber gasket element shall be constructed of synthetic or natural rubber. The internal expansion sleeve and external compression take-up clamps shall be made of Series 300 non-magnetic stainless steel or equal. The connector shall meet or exceed all of the requirements of ASTM C923, including physical properties of materials and performance testing. Pipe connector shall be PSX: Direct

Drive by Press-Seal Gasket Corporation; Kor-N-Seal 1:106/406 Series by Trelleborg Pipe Seals Milford, Inc. or equal.

2.8 PORTABLE HOIST

The portable hoist shall be series DB as manufactured by Halliday Products, Inc., or equal. The unit shall be sized to facilitate equipment placement and removal and have a load safety factor of 2. The portable hoist shall be all T-304 stainless steel construction with marine grade brake winch and 30 feet of 1/4 inch T-304 stainless steel cable with galvanized safety hook. The davit arm shall adjust in 1 inch increments from 24 inches to 36 inches and the overall unit height shall be 60 inches. The portable hoist shall be guaranteed against defects in material and/or workmanship for a period of 3 years.

Stainless steel sockets for field-mounting stainless steel portable hoist shall be the floor mount version mounted to the top of the concrete vault allowing either pump to be removed from the wet well. A stainless steel cap shall be provided to keep it free of debris. The floor-mount hoist socket will be used to assure accurate pick point placement after equipment is already in the pit.

2.9 PIPE AND VALVE IDENTIFICATION

For identification of pipe and valves located in the valve and flow meter vault shown on the Drawings.

2.9.1 Pipe Markers and Accessories

a. Snap-On Marker: One piece wrap around type constructed of precoiled acrylic plastic with clear polyester coating, integral flow arrows, legend printed in alternating directions, 3/4 inch adhesive strip on inside edge, and 360 degree visibility.

b. Strap-On Marker: Strip type constructed of precoiled acrylic plastic with clear polyester coating, integral flow arrows, legend printed in alternating directions, factory applied grommets, and pair of stainless steel spring fasteners.

c. Stick-On Marker: Pressure sensitive adhesive…