addendum no. 2 december 12, 2013 to all document … · 2013-12-12 · addendum no. 2 december 12,...

ADDENDUM NO. 2 December 12, 2013

URS Corporation 277 West Nationwide Boulevard Columbus, OH 43215-2566 Tel: 614.464.4500 Fax: 614.464.0588

TO ALL DOCUMENT HOLDERS: Subject: Scioto County, OH Minford Area – Wastewater Treatment Plant URS Job No.: 14576796 Enclosed herewith is a copy of Addendum No. 2 covering the subject project. Please retain this with your Documents. Sincerely, URS Corporation Bill Johngrass, P.E. Project Manager


14576796 ADDENDUM NO. 2 12/12/2013 13344 00 9113AD2 - 1 SCIOTO CO. – MINFORD AREA WWTP

TO THE BIDDING DOCUMENTS

FOR SCIOTO COUNTY, OHIO

MINFORD AREA – WASTEWATER TREATMENT PLANT

1.1 GENERAL

A. This Addendum covers changes to the Documents and in closing the Contract will become a part thereof. Each Bidder shall include these items to the extent they affect his Bid. These items modify only the portion of the Documents specifically noted. All other wording and Drawings remain in effect. A list of attachments is provided at the end of this addendum.

1.2 PROJECT MANUAL

A. Section 00 0110, Table of Contents 1. This section has been revised and re-issued.

B. Section 01 2100, Allowances 1. Add paragraph 1.3.A.6 as follows.

“6. Material Testing: $20,000"

C. Section 07 1113, Bituminous Dampproofing 1. This is a new section and is being issued as an attachment to this addendum.

D. Section 04 2000, Unit Masonry 1. Delete 1.2.A.3 and Section 2.3

E. Section 09 9600, High Performance Coatings 1. Add Paragraph 3.7.B as follows.

Process Tank/Structure Concrete Coating Schedule

Location Interior Exterior Above Grade

Exterior Below Grade Comments

Influent Screen None None None None

Oxidation Tank None None None None

Clarifier Splitter Box None None None None

Clarifiers None None None None

Scum Pump Station See Spec. None None Reference 09 9600 2.6.B and 43 2526 2.9.H.2

Scum Pump Station Valve Vault None None None None

Post Aeration and UV None None None None

Aerobic Digester None None None None



Plant Drain Pump Station See Spec. None None Reference 09 9600 2.6.B and 43 2526 2.9.H.2

Plant Drain Pump Station Valve Vault None None None None

F. Section 10 8113, Bird Control Devices 1. Paragraph 2.2.B, modify as follows.

B. Minimum Diameter: 0.77 mm

2. Paragraph 3.2. Add the following: B. Where possible, mount posts to top of concrete walls. Where it is not possible to mount the posts on concrete walls, mount on handrails.

G. Section 26 0576, Electrical Freeze Protection 1. This is a new section and is being issued as an attachment to this addendum.

H. Section 263213, Engine-Generator Systems 1. Paragraph 2.1.A.4.a, modify to read as follows:

"a. Output power: Size as shown on the one line diagram."

I. Section 263600, Transfer Switches 1. Paragraph 2.1.A.3, delete this paragraph and replace it with the following:

“3. Transfer switch rated 400 amperes and with a minimum 3-cycle withstand and closing rating of 30 kA."

J. Section 31 2000, Earth Moving 1. Paragraph 2.1.B, modify as follows.

“B. Satisfactory Soils: Soil Classification Groups GW, GP, GM, SW, SP, GC, SC, CL, and SM according to ASTM D 2487, or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.”

2. Paragraph 2.1.C, modify as follows. “C. Unsatisfactory Soils: Soil Classification Groups ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.”

3. Delete Paragraph 3.17.B.1.

4. Paragraph 3.21.A, modify as follows.

“A. Remove surplus satisfactory soil material from the site and dispose of the material in a legal manner and in accordance with the General Conditions and Supplementary General Conditions of the Contract.”

K. Section 32 1216, Asphalt Paving



1. This is a new section and is being issued as an attachment to this addendum.

L. Section 32 9200, Turf and Grasses 1. This is a new section and is being issued as an attachment to this addendum.

M. Section 40 0526, Slide Gates 1. Paragraph 2.1, modify as follows.

A. Rodney Hunt B. Fontaine C. Golden Harvest D. Whipps E. Coldwell-Wilcox F. Or equal.

N. Section 40 9740, Automatic Refridgerated Sampling Equipment 1. Paragraph 2.7, modify as follows.

A. ISCO Model 6712FR B. Sigma C. QCEC D. Or equal.

O. Section 43 1133, Rotary Lobe Blowers 1. Paragraph 1.6, modify as follows.

“A. Provide a manufacturer’s warranty for rotary blower equipment against defects in material and workmanship for a period of 24 months from startup.”

2. Paragraph 2.1.A, modify as follows.

1. Aerzen Generation 5 Delta Blower GM Series 2. Roots 3. Universal Blower Pac 4. Or equal”

3. Paragraph 2.2.A, modify as follows:

2. Balance blower rotors according to ISO 1940 class Q 6.3. With respect to acceptable vibration levels, the blowers must operate between effective vibration speeds of 2.8 to 11.0 mm/sec. (0.11 to 0.5 inches/sec.) measured at the bearing housing per VDI standard 3836.

4. Paragraph 2.2.B, modify Subparagraphs 2 and 7 as follows:

2. Rated Inlet/Std (icfm/std) 667/590 7. Maximum Blower Speed (rpm) 3860

5. Paragraph 2.2.D, modify Subparagraphs 2 and 6 as follows:

2. Close grained high strength cast iron construction 6. Minimum blower casing pressure rating 25 psig.

6. Paragraph 2.4.A, modify as follows



1. Supply all blower motors mounted, aligned and with totally enclosed and fan cooled enclosures. 2. Motors to be NEMA frame, as found at any local motor shop. IEC European frame motors are not acceptable. 3. Suitable for 3-phase, 60-hertz service. Insulation Class F and limited to Class B rise. 4. Efficiency shall be no less than NEMA Premium guidelines and have a top conduit box with adapters for US conduit connections. 5. Suitable for Full Load/Direct On-Line starting, Solid State Ramp starting, and Wye-Delta reduced current starting. 6. Inverter-rated as defined by NEMA -MG part 31.4. 7. Include three normally closed thermostats, one per phase to protect the motor windings from excessive temperatures, and have the leads terminate in the main motor conduit box. 8. Motors up to and including 30HP shall have 12 leads, a 1.15 Service Factor. 9. BHP shall not be allowed to exceed nameplate HP.”

7. Paragraph 2.6.A, modify as follows A. Factory test each blower stage to verify flow and brake horsepower at blower maximum conditions. The acceptance criteria are +5 percent tolerance on power and –5 percent tolerance on flow regardless of the size of the machine.

P. Section 46 4321, Circular Clarifier Equipment 1. Paragraph 2.1, modify as follows.

A. Lakeside B. Siemens C. WesTech Engineering, Inc. D. Envirodyne E. Or equal

Q. Section 46 5361, Oxidation Ditch Equipment 1. Paragraph 2.1, modify as follows.

A. Lakeside Equipment Corporation B. Envirodyne C. Or equal

R. Section 46 6656, Open-Channel Low-Pressure / high-Intensity Ultraviolet Treatment Equipment 1. Paragraph 2.3.C and D, modify as follows.

C. Baffle: The equipment is to be installed in a channel that may be utilized in the future for higher flow rates. Provide a Type 304 stainless steel baffle wall properly sized for the channel and the equipment supplied. D. Effluent Weir: Provide a fixed serpentine weir of Type 304 stainless steel with a minimum effective length of 56’-0”.

S. Section 46 7113, Floating Decanter 1. This section has been revised and re-issued.



1.3 PROJECT DRAWINGS

A. Drawing SW-1, Overall Site Plan 1. Revise gate shall be 16-feet wide.

B. Drawing SW-3, Yard Piping 1. Delete Note 2.

C. Drawing SW-10, Asphalt Pavement Detail 1. Revise “6-inches~Item 301~Aggregate Base” to “6-inches~Item 301~Asphalt Concrete

Base”.

D. Drawing 8P-1, Sludge Holding Tanks, Plan and Details 1. Add the following Notes:

1. Provide and install a cover for the Sludge Transfer Pump. Constructed of aluminum or fiberglass, un-heated and uninsulated, with a flip-top of access door to provide full access to pump and openings to accommodate the pump suction and discharge piping while maintain weather tightness of enclosure. Basis of design Pump Guard by Hot-Box manufacturing, or equal.

2. Provide and install a PS-01 type pipe support in 304 stainless steel for the Sludge Transfer Pump discharge piping.

E. Drawing 1A-4, Operations Building - Sections and Details 1. Sections 4 & 5, replace “Moisture Barrier” callout with “Bituminous Dampproofing”.

F. Drawings 4S-3, 4S-4, 7S-2, 7S-3, and 8S-2 1. In locations where concrete is being poured on shale / limestone surfaces, provide 3” lean

concrete fill and remove the references to 6” #57 gravel.

G. Drawing No. E-3, Electrical One Line Diagram 1. Add the following three lines to the bottom of the three phase feeder schedule:

List of Attachments A – Section 00 0110, Table of Contents B – Section 07 1113, Bituminous Dampproofing C – Section 26 0576, Electrical Freeze Protection D – Section 32 1216, Asphalt Paving E – Section 32 9200, Turf and Grasses F – Section 467113, Floating Decanter

END OF ADDENDUM NO. 2

P16 500 - 2 3" 1 400 P16N 500 500 - 3-1/2" 1 400 P16B 500 500 2 3-1/2" 1 400

REVISED & RE-ISSUED AS ATTACHMENT TO ADDENDUM NO. 2 DATED 12/12/13

14576796 TABLE OF CONTENTS 12/12/13 00 0110AD2 - 1 SCIOTO CO. - MINFORD AREA WWTP

SECTION 00 0110

TABLE OF CONTENTS 00 0110 Table of Contents

PROCUREMENT AND CONTRACTING DOCUMENTS GROUP

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS 00 1113 Advertisement for Bids, RUS Bulletin 1780-26, Attachment E (1 page) 00 2113 Instructions to Bidders, RUS Bulletin 1780-26, Attachment F (12 pages) 00 3132 Geotechnical Data ----- Report by H. C Nutting – A Terracon Company 00 4100 Bid Form, RUS Bulletin 1780-26, Attachment G 00 4333 Declaration of Manufacturer Sheet ----- EJCDC C-430, Bid Bond (2007 Edition) (2 pages) 00 4513 Bidder’s Qualifications ----- Form RD 400-6, Compliance Statement ----- Form AD 1048, Certification Regarding Debarment, Suspension, and Ineligibility and Voluntary Exclusion ----- Form RD 1940-Q, Certification for Contracts, Grants, and Loans ----- Form SF LLL, Disclosure of Lobbying Activities ----- EJCDC C-510 (2007 Edition), Notice of Award (1 page) ----- EJCDC C-520 (2007 Edition), Agreement between Owner and Contractor (11 pages) ----- EJCDC C-550 (2007 Edition), Notice to Proceed (1 page) ----- EJCDC C-610 (2007 Edition), Performance Bond (3 pages) ----- EJCDC C-615 (2007 Edition) Payment Bond (3 pages) ---- Application for Payment (4 pages) ----- EJCDC C-941 (2007 Edition), Change Order (2 pages) ----- EJCDC C-625 (2007 Edition), Certificate of Substantial Completion ( 2 pages) ----- EJCDC C-700 (2007 Edition), Standard General Conditions (68 pages) 00 7300 Supplementary Conditions, RUS Bulletin 1780-26, Attachment H (10 pages)

SPECIFICATIONS GROUP

General Requirements Subgroup

DIVISION 01 - GENERAL REQUIREMENTS 01 1100 Summary of Work 01 2100 Allowances 01 2500 Substitution Procedures 01 2973 Schedule of Values 01 3119 Project Meetings 01 3120 Field Engineering 01 3300 Submittal Procedures 01 4100 Regulatory Requirements 01 4500 Quality Control ----- Statements of Special Inspections 01 4516 Field Quality Control Procedures



01 5173 Temporary Erosion and Sediment Control 01 5800 Project Identification 01 6000 Product Requirements 01 7700 Closeout Procedures 01 7823 Operation and Maintenance Data

Facility Construction Subgroup

DIVISION 03 - CONCRETE 03 3000 Cast-In-Place Concrete DIVISION 04 - MASONRY 04 2000 Unit Masonry DIVISION 05 - METALS 05 5000 Metal Fabrications 05 5100 Metal Stairs 05 5213 Pipe and Tube Railings 05 5300 Metal Gratings DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES 06 1053 Miscellaneous Rough Carpentry 06 1600 Sheathing 06 1753 Shop-Fabricated Wood Trusses 06 8013 Fiberglass Fabrications for Process Tanks DIVISION 07 - THERMAL AND MOISTURE PROTECTION 07 1113 Bituminous Dampproofing 07 2100 Thermal Insulation 07 3113 Asphalt Shingles 07 4600 Siding 07 6200 Sheet Metal Flashing and Trim 07 7200 Roof Accessories 07 9200 Joint Sealants DIVISION 08 - OPENINGS 08 1616 Fiberglass Doors and Frames 08 3113.13 Floor Access Doors and Frames 08 4113 Aluminum-Framed Storefronts 08 7100 Door Hardware 08 8000 Glazing 08 9000 Louvers and Vents DIVISION 09 - FINISHES 09 2900 Gypsum Board 09 9113 Exterior Painting 09 9123 Interior Painting 09 9600 High Performance Coatings DIVISION 10 - SPECIALTIES 10 1400 Signage



10 2800 Toilet and Bath Accessories 10 8113 Bird Control Devices DIVISION 12 - FURNISHINGS 12 3553 Laboratory Casework DIVISION 13 – SPECIAL CONSTRUCTION 13 3410 Fiberglass Building

Facility Services Subgroup

DIVISION 22 - PLUMBING 22 0501 Common Work Results for Plumbing 22 0519 Meters and Gauges for Plumbing Piping 22 0523 General-Duty Valves for Plumbing Piping 22 0529 Hangers and Supports for Plumbing Piping and Equipment 22 0553 Identification for Plumbing Piping and Equipment 22 0561 Preparation of Plumbing Systems 22 0700 Plumbing Insulation 22 1116 Domestic Water Piping 22 1313 Building Sanitary 22 3300 Domestic Water Heaters 22 4000 Plumbing Fixtures DIVISION 23 - HEATING VENTILATING AND AIR CONDITIONING 23 0501 Basic HVAC Materials and Methods 23 0590 Mechanical Systems Testing, Adjusting, and Balancing 23 0700 HVAC Insulation 23 3100 Ductwork and Accessories 23 3400 Exhaust and Ventilating Fans 23 7416 Ductless Split System Heat Pumps 23 8215 Electric Pedestal Baseboard Heaters 23 8239 Electric Unit Heaters DIVISION 26 - ELECTRICAL 26 0505 Basic Electrical Requirements 26 0510 Basic Electrical Materials and Methods 26 0519 Wires, Cables, and Connectors 26 0523 Signal and Communication Cables 26 0526 Grounding 26 0529 Supporting Devices 26 0533 Raceway 26 0543 Manholes, Handholes, and Underground Pull Boxes 26 0576 Electrical Freeze Protection 26 0553 Electrical Identification 26 0900 Control Devices 26 0913 Electrical Power Monitoring and Control 26 2200 Transformers 26 2416 Panelboards 26 2419 Motor Control Centers 26 2716 Cabinets, Boxes, and Fittings



26 2726 Wiring Devices 26 2813 Overcurrent Protective Devices 26 2816 Enclosed Switches and Circuit Breakers 26 2913 Motor Controllers 26 2923 Variable Frequency Drives 26 3213 Engine-Generator Systems 26 3600 Transfer Switches 26 4300 Surge Protective Devices 26 5000 Lighting Fixtures

Site and Infrastructure Subgroup

DIVISION 31 - EARTHWORK 31 1000 Site Clearing 31 2000 Earth Moving DIVISION 32 - EXTERIOR IMPROVEMENTS 32 1216 Asphalt Paving 32 9200 Turf and Grasses 32 3113 Chain Link Fences and Gates DIVISION 33 - UTILITIES 33 0517 Precast Concrete Vaults 33 4100 Storm Utility Drainage Piping

Process Equipment Subgroup DIVISION 40 - PROCESS INTEGRATION 40 0513 Process Piping 40 0523 Common work Results for Process Valves 40 0526 Slide Gates 40 0529 Process Pipe Hangers and Supports 40 9113 Chemical Properties Measurement 40 9123.33 Flow Measurement 40 9123.36 Level Measurement 40 9323 Chart Recorders 40 9513 Control Panels 40 9740 Automatic Refrigerated Sampling Equipment DIVISION 43 – PROCESS GAS AND LIQUID HANDLING, PURIFICATION AND STORAGE EQUIPMENT 43 1133 Rotary Lobe Blowers 43 2138.26 Centrifugal Vortex Pumps 43 2526 Submersible Centrifugal Pump Station DIVISION 46 – WATER AND WASTEWATER EQUPMENT 46 0500 Common Work Results for Water and Wastewater Equipment 46 2139 Spiral Screens 46 4321 Circular Clarifier Equipment 46 5121 Coarse Bubble Diffusers 46 5361 Oxidation Ditch Equipment



46 6656 Open-Channel Low-Pressure/High-Intensity Ultraviolet Treatment Equipment 46 7113 Floating Decanter

END OF TABLE OF CONTENTS

ISSUED AS AN ATTACHMENT TO ADDENDUM NO. 2 DATED 12/12/2013


SECTION 07 1113

BITUMINOUS DAMPPROOFING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following: 1. Cold-applied, emulsified-asphalt dampproofing for masonry cavity walls.

1.3 SUBMITTALS

A. Product Data: For each type of product indicated. Include recommendations for method of application, primer, number of coats, coverage or thickness, and protection course.

B. Material Certificates: For each product, signed by manufacturers.

1.4 QUALITY ASSURANCE

A. Source Limitations: Obtain primary dampproofing materials and primers through one source from a single manufacturer. Provide secondary materials recommended by manufacturer of primary materials.

1.5 PROJECT CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit dampproofing to be performed according to manufacturers' written instructions.

B. Ventilation: Provide adequate ventilation during application of dampproofing in enclosed spaces. Maintain ventilation until dampproofing has cured.

PART 2 - PRODUCTS

2.1 COLD-APPLIED, EMULSIFIED-ASPHALT DAMPPROOFING

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ChemMasters Corp. 2. BASF; Sonneborn Brand Products. 3. Gardner Gibson, Inc. 4. Koppers Inc. 5. Meadows, W. R., Inc. 6. Tamms Industries, Inc. 7. Or equal



B. Brush and Spray Coats: ASTM D 1227, Type III, Class 1.

C. VOC Content: 0.25 lb/gal. or less.

2.2 MISCELLANEOUS MATERIALS

A. Emulsified-Asphalt Primer: ASTM D 1227, Type III, Class 1, except diluted with water as recommended by manufacturer.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, with Installer present, for compliance with requirements for surface smoothness and other conditions affecting performance of work. 1. Proceed with dampproofing application only after substrate construction and penetrating

work have been completed and unsatisfactory conditions have been corrected. 2. Test for surface moisture according to ASTM D 4263.

3.2 PREPARATION

A. Protection of Other Work: Mask or otherwise protect adjoining exposed surfaces from being stained, spotted, or coated with dampproofing. Prevent dampproofing materials from entering and clogging weep holes and drains.

B. Clean substrates of projections and substances detrimental to work; fill voids, seal joints, and apply bond breakers if any, as recommended by prime material manufacturer.

3.3 APPLICATION, GENERAL

A. Comply with manufacturer's written recommendations unless more stringent requirements are indicated or required by Project conditions to ensure satisfactory performance of dampproofing.

B. Apply dampproofing to provide continuous plane of protection on exterior face of inner wythe of exterior masonry cavity walls. 1. Lap dampproofing at least 1/4 inch onto flashing, masonry reinforcement, veneer ties,

and other items that penetrate inner wythe. 2. Extend dampproofing over outer face of structural members and concrete slabs that

interrupt inner wythe, and lap dampproofing at least 1/4 inch onto shelf angles supporting veneer.

3.4 COLD-APPLIED, EMULSIFIED-ASPHALT DAMPPROOFING

A. On Exterior Face of Inner Wythe of Cavity Walls: Apply primer and 1 brush or spray coat at not less than 1 gal./100 sq. ft..

3.5 CLEANING

A. Remove dampproofing materials from surfaces not intended to receive dampproofing.

END OF SECTION 07 1113

ISSUED AS AN ATTACHMENT TO ADDENDUM NO. 2 DATE 12/12/2013

14576796 ELECTRICAL FREEZE PROTECTION 12/12/2013 13344 26 0576AD2 - 1 SCIOTO CO. – MINFORD AREA WWTP

SECTION 26 0576

ELECTRICAL FREEZE PROTECTION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes: 1. Pipe Insulation. 2. Electrical Heating Tape. 3. Thermostats.

1.3 SUBMITTALS

A. General. 1. Comply with the requirements of Division 01 Section, "Submittals". 2. Submit information as described below. 3. Provide all information necessary to determine compliance with the plans and

specifications.

B. Product Data: 1. Manufacturer’s technical product data sheets for all products specified in this section. 2. Delete or cross out all inappropriate or non-applicable information.

C. Shop Drawings: 1. Layout of heating equipment and cable. 2. Details of system.


A. Manufacturer Qualifications: 1. Ten years experience in design, engineering, manufacture and support of specified

system and components.

B. Product Requirements: 1. Heating equipment furnished under this section shall be supplied by a single

manufacturer. 2. CSA Certified or FM Approved self regulating cable. 3. UL Listed, thermostat.

C. Design and Layout 1. Provide a detailed design using standard heat-tracing design software. 2. At minimum, the design must provide the following:

a. Circuit identification number



b. Maintain temperature c. Line size and insulation d. Heat loss for pipe, valves, and supports e. Amount and type of heating cable required f. Spiral requirements g. Heating cable power output at the maintain temperature h. Circuit breaker and transformer sizing

1.5 DELIVERY, STORAGE, AND HANDLING

A. Store products in manufacturer's unopened packaging until ready for installation.

B. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.

PART 2 - PRODUCTS

2.1 ELASTOMERIC INSULATION

A. Insulation material shall be a flexible, closed-cell 1. Polyolefin/polyethylene insulation in tubular form, ASTM C 1427, “Specification for

Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form”. 2. Flexible elastomeric in tubular form, ASTM C 534, Grade 1, Type I, “Specification for

Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form”

B. Ratings. 1. Flame spread index of less than 25. 2. Smoke developed index of less than 50. 3. Maximum thermal conductivity of 0.27 Btu-in./h-ft2-°F at a 75°F mean temperature. 4. Maximum water vapor transmission of 0.08 perm-inches.

2.2 HEATING CABLE

A. Self Regulating Cable: 1. Power rating per foot as required to maintain the protected pipes at 40°F minimum. 2. Nickel plated copper bus wires separated by a positive temperature coefficient conductive

polymer heating element. 3. Ultra-violet resistant jacket. 4. Approved power connection and end termination kits provided. 5. Voltage Rating: 208V.

B. Thermostat: 1. Ambient sensing. Set to activate at the maintenance temperature. 2. NEMA 4x enclosure.

C. Available manufacturers: Subject to compliance, available manufacturers of the specified products include but are not limited to the following: 1. Chromalox. 2. DeltaTherm. 3. Raychem 4. Or equal.



PART 3 - EXECUTION

3.1 EXAMINATION

A. Installer to verify field measurements are as shown on Drawings, or described in specifications..

B. Installer to verify that required power is available, in proper location, and ready for use.

3.2 PREPARATION

A. Clean surfaces prior to installation.

B. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

3.3 INSTALLATION

A. General. 1. Complete installation shall conform to appropriate local codes. 2. Install heating cables in accordance with manufacturer's instructions. 3. Spirally wrap heating cable around pipe where required. 4. Bind heating cable to pipe with tape wraps approximately every 12 inches (305 mm). 5. Locate heating cable on pipe per manufacturer's instructions. 6. Do not pinch or make sharp bends in cable. 7. Tape heating cable hot-cold junction to pipe.

B. Self Regulating (SR) Cable Installation 1. Terminate non-power end of cable per termination kit instructions. 2. Do not pinch or make sharp bends in cable. 3. Make all connections per manufacturer's instructions and all local codes.

C. Pipe Insulation. 1. Install pipe insulation by slitting tubular sections and applying onto piping or tubing. 2. Seal all seams and butt joints with approved adhesive. 3. Cut all edges clean using proper tools such as sharp knives. 4. Stagger seams when applying multiple layers of insulation. 5. Locate seams on all outdoor exposed piping on the lower half of the pipe. 6. Minimum insulation thickness, 2 inches.

3.4 FIELD QUALITY CONTROL

A. General. 1. Test continuity of heating cable. 2. Test insulation resistance of each heater section before, during, and after insulation has

been installed. 3. Minimum acceptable reading shall be 10 megohms.

B. Measure voltage and current at each unit after installation is complete.

C. Submit written test report showing values measured on each test for each cable.



3.5 ADJUSTING AND CLEANING

A. Adjust system controls and instruct Owner/Operator.

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



14576796 ASPHALT PAVING 12/12/2013 13344 32 1216AD2 - 1 SCIOTO CO. – MINFORD AREA WWTP

SECTION 32 1216

ASPHALT PAVING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes 1. Cold milling of existing hot-mix asphalt pavement. 2. Hot-mix asphalt patching. 3. Hot-mix asphalt paving. 4. Hot-mix asphalt paving overlay. 5. Pavement-marking paint.

B. Related Sections 1. Division 31 Section "Earth Moving" for aggregate subbase and base courses and for

aggregate pavement shoulders.

1.2 SUBMITTALS

A. Product Data: For each type of product indicated. Include technical data and tested physical and performance properties. 1. Job-Mix Designs: Certification, by authorities having jurisdiction, of approval of each

job mix proposed for the Work. 2. Job-Mix Designs: For each job mix proposed for the Work.

B. Material Certificates: For each paving material, from manufacturer.


A. Manufacturer Qualifications: A paving-mix manufacturer registered with and approved by authorities having jurisdiction or the DOT of state in which Project is located.

B. Regulatory Requirements: Comply with materials, workmanship, and other applicable requirements of Ohio DOT for asphalt paving work. 1. Measurement and payment provisions and safety program submittals included in standard

specifications do not apply to this Section.

C. Preinstallation Conference: Conduct conference at Project site.

1.4 PROJECT CONDITIONS

A. Environmental Limitations: Do not apply asphalt materials if subgrade is wet or excessively damp, if rain is imminent or expected before time required for adequate cure, or if the following conditions are not met: 1. Tack Coat: Minimum surface temperature of 60 deg F. 2. Asphalt Base Course: Minimum surface temperature of 40 deg F and rising at time of

placement. 3. Asphalt Surface Course: Minimum surface temperature of 60 deg F at time of placement.



B. Pavement-Marking Paint: Proceed with pavement marking only on clean, dry surfaces and at a minimum ambient or surface temperature of 40 deg F for oil-based materials, 55 deg F for water-based materials, and not exceeding 95 deg F.

PART 2 - PRODUCTS

2.1 AGGREGATES

A. Coarse Aggregate: ASTM D 692, sound; angular crushed stone, crushed gravel, or cured, crushed blast-furnace slag.

B. Fine Aggregate: AASHTO M 29, sharp-edged natural sand or sand prepared from stone, gravel, cured blast-furnace slag, or combinations thereof.

C. Mineral Filler: AASHTO M 17, rock or slag dust, hydraulic cement, or other inert material.

2.2 ASPHALT MATERIALS

A. Asphalt Binder: AASHTO M 320.

B. Tack Coat: AASHTO M 140 emulsified asphalt, or AASHTO M 208 cationic emulsified asphalt, slow setting, diluted in water, of suitable grade and consistency for application.

2.3 AUXILIARY MATERIALS

A. Herbicide: Commercial chemical for weed control, registered by the EPA. Provide in granular, liquid, or wettable powder form.

B. Pavement-Marking Paint: MPI #32 Alkyd Traffic Marking Paint. 1. Color: White.

C. Pavement-Marking Paint: MPI #97 Acrylic Latex Traffic Marking Paint. 1. Color: White.

D. Glass Beads: AASHTO M 247, Type 1.

E. Wheel Stops: Precast, air-entrained concrete, 2500-psi minimum compressive strength, 4-1/2 inches high by 9 inches wide by 72 inches long. Provide chamfered corners, drainage slots on underside, and holes for anchoring to substrate. 1. Dowels: Galvanized steel, 3/4-inch diameter, 10-inch minimum length.

2.4 MIXES

A. Hot-Mix Asphalt: Dense, hot-laid, hot-mix asphalt plant mixes approved by the authorities having jurisdiction; designed according to procedures in AI MS-2, "Mix Design Methods for Asphalt Concrete and Other Hot-Mix Types"; and complying with the following requirements: 1. Provide mixes with a history of satisfactory performance in geographical area where

Project is located. 2. See drawings for pavement sections.



PART 3 - EXECUTION

3.1 EXAMINATION

A. Proof-roll subgrade below pavements with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding. Do not proof-roll wet or saturated subgrades.

B. Proceed with paving only after unsatisfactory conditions have been corrected.

3.2 COLD MILLING

A. Clean existing pavement surface of loose and deleterious material immediately before cold milling. Remove existing asphalt pavement by cold milling to grades and cross sections indicated. 1. Mill to a depth of 1-1/2 inches.

3.3 PATCHING

A. Hot-Mix Asphalt Pavement: Saw cut perimeter of patch and excavate existing pavement section to sound base. Excavate rectangular or trapezoidal patches, extending 12 inches into adjacent sound pavement, unless otherwise indicated. Cut excavation faces vertically. Remove excavated material. Recompact existing unbound-aggregate base course to form new subgrade.

B. Portland Cement Concrete Pavement: Break cracked slabs and roll as required to reseat concrete pieces firmly. 1. Remove disintegrated or badly cracked pavement. Excavate rectangular or trapezoidal

patches, extending into adjacent sound pavement, unless otherwise indicated. Cut excavation faces vertically. Recompact existing unbound-aggregate base course to form new subgrade.

C. Tack Coat: Apply uniformly to vertical surfaces abutting or projecting into new, hot-mix asphalt paving at a rate of 0.05 to 0.15 gal./sq. yd.. 1. Allow tack coat to cure undisturbed before applying hot-mix asphalt paving. 2. Avoid smearing or staining adjoining surfaces, appurtenances, and surroundings.

Remove spillages and clean affected surfaces.

D. Patching: Fill excavated pavements with hot-mix asphalt base mix for full thickness of patch and, while still hot, compact flush with adjacent surface.

3.4 SURFACE PREPARATION

A. General: Immediately before placing asphalt materials, remove loose and deleterious material from substrate surfaces. Ensure that prepared subgrade is ready to receive paving.

B. Herbicide Treatment: Apply herbicide according to manufacturer's recommended rates and written application instructions. Apply to dry, prepared subgrade or surface of compacted-aggregate base before applying paving materials.

C. Tack Coat: Apply uniformly to surfaces of existing pavement at a rate of 0.05 to 0.15 gal./sq. yd.. Allow tack coat to cure undisturbed before applying hot-mix asphalt paving.



1. Avoid smearing or staining adjoining surfaces, appurtenances, and surroundings. Remove spillages and clean affected surfaces.

3.5 HOT-MIX ASPHALT PLACING

A. Machine place hot-mix asphalt on prepared surface, spread uniformly, and strike off. Place asphalt mix by hand to areas inaccessible to equipment in a manner that prevents segregation of mix. Place each course to required grade, cross section, and thickness when compacted. 1. Spread mix at minimum temperature of 250 deg F. 2. Regulate paver machine speed to obtain smooth, continuous surface free of pulls and

tears in asphalt-paving mat.

B. Place paving in consecutive strips not less than 10 feet wide unless infill edge strips of a lesser width are required.

C. Promptly correct surface irregularities in paving course behind paver. Use suitable hand tools to remove excess material forming high spots. Fill depressions with hot-mix asphalt to prevent segregation of mix; use suitable hand tools to smooth surface.

3.6 JOINTS

A. Construct joints to ensure a continuous bond between adjoining paving sections. Construct joints free of depressions, with same texture and smoothness as other sections of hot-mix asphalt course. 1. Clean contact surfaces and apply tack coat to joints. 2. Offset longitudinal joints, in successive courses, a minimum of 6 inches. 3. Offset transverse joints, in successive courses, a minimum of 24 inches. 4. Construct transverse joints at each point where paver ends a day's work and resumes

work at a subsequent time. Construct these joints using either "bulkhead" or "papered" method according to AI MS-22, for both "Ending a Lane" and "Resumption of Paving Operations."

3.7 COMPACTION

A. General: Begin compaction as soon as placed hot-mix paving will bear roller weight without excessive displacement. Compact hot-mix paving with hot, hand tampers or with vibratory-plate compactors in areas inaccessible to rollers. 1. Complete compaction before mix temperature cools to 185 deg F.

B. Breakdown Rolling: Complete breakdown or initial rolling immediately after rolling joints and outside edge. Examine surface immediately after breakdown rolling for indicated crown, grade, and smoothness. Correct laydown and rolling operations to comply with requirements.

C. Intermediate Rolling: Begin intermediate rolling immediately after breakdown rolling while hot-mix asphalt is still hot enough to achieve specified density. Continue rolling until hot-mix asphalt course has been uniformly compacted to the following density: 1. Average Density: 92 percent of reference maximum theoretical density according to

ASTM D 2041, but not less than 90 percent nor greater than 96 percent.

D. Finish Rolling: Finish roll paved surfaces to remove roller marks while hot-mix asphalt is still warm.



E. Edge Shaping: While surface is being compacted and finished, trim edges of pavement to proper alignment. Bevel edges while asphalt is still hot; compact thoroughly.

F. Protection: After final rolling, do not permit vehicular traffic on pavement until it has cooled and hardened.

G. Erect barricades to protect paving from traffic until mixture has cooled enough not to become marked.

3.8 ASPHALT CURBS

A. Construct hot-mix asphalt curbs over compacted pavement surfaces. Apply a light tack coat unless pavement surface is still tacky and free from dust. Spread mix at minimum temperature of 250 deg F. 1. Asphalt Mix: Same as pavement surface-course mix.

B. Place hot-mix asphalt to curb cross section indicated or, if not indicated, to local standard shapes, by machine or by hand in wood or metal forms. Tamp hand-placed materials and screed to smooth finish. Remove forms after hot-mix asphalt has cooled.

3.9 INSTALLATION TOLERANCES

A. Pavement Thickness: Compact each course to produce the thickness indicated within the following tolerances: 1. Base Course: Plus or minus 1/2 inch. 2. Surface Course: Plus 1/4 inch, no minus.

B. Pavement Surface Smoothness: Compact each course to produce a surface smoothness within the following tolerances as determined by using a 10-foot straightedge applied transversely or longitudinally to paved areas: 1. Base Course: 1/4 inch. 2. Surface Course: 1/8 inch. 3. Crowned Surfaces: Test with crowned template centered and at right angle to crown.

Maximum allowable variance from template is 1/4 inch.

3.10 PAVEMENT MARKING

A. Do not apply pavement-marking paint until layout, colors, and placement have been verified with Engineer.

B. Allow paving to age for 30 days before starting pavement marking.

C. Sweep and clean surface to eliminate loose material and dust.

D. Apply paint with mechanical equipment to produce pavement markings, of dimensions indicated, with uniform, straight edges. Apply at manufacturer's recommended rates to provide a minimum wet film thickness of 15 mils. 1. Broadcast glass beads uniformly into wet pavement markings at a rate of 6 lb/gal..



3.11 WHEEL STOPS

A. Install wheel stops in bed of adhesive as recommended by manufacturer.

B. Securely attach wheel stops to pavement with not less than two galvanized-steel dowels embedded at one-quarter to one-third points. Securely install dowels into pavement and bond to wheel stop. Recess head of dowel beneath top of wheel stop.


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

B. Replace and compact hot-mix asphalt where core tests were taken.

C. Remove and replace or install additional hot-mix asphalt where test results or measurements indicate that it does not comply with specified requirements.

3.13 DISPOSAL

A. Except for material indicated to be recycled, remove excavated materials from Project site and legally dispose of them in an EPA-approved landfill.



14576796 TURF AND GRASSES 12/12/2013 13344 32 9200AD2 - 1 SCIOTO CO. – MINFORD AREA WWTP

SECTION 32 9200

TURF AND GRASSES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes 1. Seeding. 2. Sodding.

1.2 DEFINITIONS

A. Duff Layer: The surface layer of native topsoil that is composed of mostly decayed leaves, twigs, and detritus.

B. Finish Grade: Elevation of finished surface of planting soil.

C. Manufactured Topsoil: Soil produced off-site by homogeneously blending mineral soils or sand with stabilized organic soil amendments to produce topsoil or planting soil.

D. Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating a pest. This includes insecticides, miticides, herbicides, fungicides, rodenticides, and molluscicides. It also includes substances or mixtures intended for use as a plant regulator, defoliant, or desiccant.

E. Pests: Living organisms that occur where they are not desired or that cause damage to plants, animals, or people. These include insects, mites, grubs, mollusks (snails and slugs), rodents (gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.

F. Planting Soil: Standardized topsoil; existing, native surface topsoil; existing, in-place surface soil; imported topsoil; or manufactured topsoil that is modified with soil amendments and perhaps fertilizers to produce a soil mixture best for plant growth.

G. Subgrade: Surface or elevation of subsoil remaining after excavation is complete, or top surface of a fill or backfill before planting soil is placed.

H. Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic matter and soil organisms.

I. Surface Soil: Whatever soil is present at the top layer of the existing soil profile at the Project site. In undisturbed areas, the surface soil is typically topsoil, but in disturbed areas such as urban environments, the surface soil can be subsoil.

1.3 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Certification of grass seed. 1. Certification of each seed mixture for turfgrass sod.



C. Product certificates.


A. Installer's Field Supervision: Require Installer to maintain an experienced full-time supervisor on Project site when work is in progress. 1. Pesticide Applicator: State licensed, commercial.

B. Soil Analysis: For each unamended soil type, furnish soil analysis and a written report by a qualified soil-testing laboratory. 1. The soil-testing laboratory shall oversee soil sampling. 2. Report suitability of tested soil for turf growth.

a. State recommendations for nitrogen, phosphorus, and potash nutrients and soil amendments to be added to produce satisfactory planting soil suitable for healthy, viable plants.

b. Report presence of problem salts, minerals, or heavy metals; if present, provide additional recommendations for corrective action.


A. Seed and Other Packaged Materials: Deliver packaged materials in original, unopened containers showing weight, certified analysis, name and address of manufacturer, and indication of conformance with state and federal laws, as applicable.

B. Sod: Harvest, deliver, store, and handle sod according to requirements in "Specifications for Turfgrass Sod Materials" and "Specifications for Turfgrass Sod Transplanting and Installation" in TPI's "Guideline Specifications to Turfgrass Sodding." Deliver sod in time for planting within 24 hours of harvesting. Protect sod from breakage and drying.

1.6 MAINTENANCE SERVICE

A. Initial Turf Maintenance Service: Provide full maintenance by skilled employees of landscape Installer. Maintain as required in Part 3. Begin maintenance immediately after each area is planted and continue until acceptable turf is established but for not less than the following periods: 1. Seeded Turf: 60 days from date of planting completion.

a. When initial maintenance period has not elapsed before end of planting season, or if turf is not fully established, continue maintenance during next planting season.

2. Sodded Turf: 60 days from date of planting completion.

PART 2 - PRODUCTS

2.1 SEED

A. Grass Seed: Fresh, clean, dry, new-crop seed complying with AOSA's "Journal of Seed Technology; Rules for Testing Seeds" for purity and germination tolerances.

B. Seed Species: State-certified seed of grass species as follows: 1. Sun and Partial Shade: Proportioned by weight as follows:

a. 40 percent Kentucky Bluegrass. b. 40 percent Creeping Red Fescue.



c. 20 percent Annual Ryegrass.

2.2 INORGANIC SOIL AMENDMENTS

A. Lime: ASTM C 602, agricultural liming material containing a minimum of 80 percent calcium carbonate equivalent and as follows: 1. Class: T, with a minimum of 99 percent passing through No. 8 sieve and a minimum of

75 percent passing through No. 60 sieve. 2. Class: O, with a minimum of 95 percent passing through No. 8 sieve and a minimum of

55 percent passing through No. 60 sieve.

B. Sulfur: Granular, biodegradable, containing a minimum of 90 percent sulfur, and with a minimum of 99 percent passing through No. 6 sieve and a maximum of 10 percent passing through No. 40 sieve.

C. Iron Sulfate: Granulated ferrous sulfate containing a minimum of 20 percent iron and 10 percent sulfur.

D. Aluminum Sulfate: Commercial grade, unadulterated.

E. Perlite: Horticultural perlite, soil amendment grade.

F. Agricultural Gypsum: Minimum 90 percent calcium sulfate, finely ground with 90 percent passing through No. 50 sieve.

G. Sand: Clean, washed, natural or manufactured, and free of toxic materials.

H. Diatomaceous Earth: Calcined, 90 percent silica, with approximately 140 percent water absorption capacity by weight.

I. Zeolites: Mineral clinoptilolite with at least 60 percent water absorption by weight.

2.3 ORGANIC SOIL AMENDMENTS

A. Compost: Well-composted, stable, and weed-free organic matter, pH range of 5.5 to 8; moisture content 35 to 55 percent by weight; 100 percent passing through 3/4-inch sieve; soluble salt content of 5 to 10 decisiemens/m; not exceeding 0.5 percent inert contaminants and free of substances toxic to plantings.

B. Sphagnum Peat: Partially decomposed sphagnum peat moss, finely divided or of granular texture, with a pH range of 3.4 to 4.8.

C. Muck Peat: Partially decomposed moss peat, native peat, or reed-sedge peat, finely divided or of granular texture, with a pH range of 6 to 7.5, and having a water-absorbing capacity of 1100 to 2000 percent.

D. Wood Derivatives: Decomposed, nitrogen-treated sawdust, ground bark, or wood waste; of uniform texture and free of chips, stones, sticks, soil, or toxic materials.

E. Manure: Well-rotted, unleached, stable or cattle manure containing not more than 25 percent by volume of straw, sawdust, or other bedding materials; free of toxic substances, stones, sticks, soil, weed seed, and material harmful to plant growth.



2.4 FERTILIZERS

A. Commercial Fertilizer: Commercial-grade complete fertilizer of neutral character, consisting of fast- and slow-release nitrogen, 50 percent derived from natural organic sources of urea formaldehyde, phosphorous, and potassium in the following composition: 1. Composition: 1 lb/1000 sq. ft. of actual nitrogen, 4 percent phosphorous, and 2 percent

potassium, by weight.

B. Slow-Release Fertilizer: Granular or pelleted fertilizer consisting of 50 percent water-insoluble nitrogen, phosphorus, and potassium in the following composition: 1. Composition: 20 percent nitrogen, 10 percent phosphorous, and 10 percent potassium, by

weight.

2.5 PLANTING SOILS

A. Planting Soil: ASTM D 5268 topsoil, with pH range of 5.5 to 7, a minimum of 2 percent organic material content. Verify suitability of soil to produce viable planting soil. Clean soil of roots, plants, sod, stones, clods, clay lumps, pockets of coarse sand, concrete slurry, concrete layers or chunks, cement, plaster, building debris, and other extraneous materials harmful to plant growth. Mix soil with the following soil amendments and fertilizers in the following quantities to produce planting soil: 1. Ratio of Loose Compost to Topsoil by Volume: 1:4. 2. Ratio of Loose Sphagnum Peat to Topsoil by Volume: 1:4. 3. Weight of Commercial Fertilizer per 1000 Sq. Ft. 20 lbs. 4. Weight of Slow-Release Fertilizer per 1000 Sq. Ft. 20 lbs.

2.6 MULCHES

A. Straw Mulch: Provide air-dry, clean, mildew- and seed-free, salt hay or threshed straw of wheat, rye, oats, or barley.

B. Sphagnum Peat Mulch: Partially decomposed sphagnum peat moss, finely divided or of granular texture, and with a pH range of 3.4 to 4.8.

C. Muck Peat Mulch: Partially decomposed moss peat, native peat, or reed-sedge peat, finely divided or of granular texture, with a pH range of 6 to 7.5, and having a water-absorbing capacity of 1100 to 2000 percent.

D. Compost Mulch: Well-composted, stable, and weed-free organic matter, pH range of 5.5 to 8; moisture content 35 to 55 percent by weight; 100 percent passing through 1-inch sieve; soluble salt content of 2 to 5 decisiemens/m; not exceeding 0.5 percent inert contaminants and free of substances toxic to plantings.

2.7 PESTICIDES

A. General: Pesticide, registered and approved by EPA, acceptable to authorities having jurisdiction, and of type recommended by manufacturer for each specific problem and as required for Project conditions and application. Do not use restricted pesticides unless authorized in writing by authorities having jurisdiction.



PART 3 - EXECUTION

3.1 TURF AREA PREPARATION

A. Newly Graded Subgrades: Loosen subgrade to a minimum depth of 6 inches. Remove stones larger than 1 inch in any dimension and sticks, roots, rubbish, and other extraneous matter and legally dispose of them off Owner's property. 1. Apply fertilizer directly to subgrade before loosening. 2. Thoroughly blend planting soil off-site before spreading or spread topsoil, apply soil

amendments and fertilizer on surface, and thoroughly blend planting soil. 3. Spread planting soil to a depth of 6 inches but not less than required to meet finish grades

after light rolling and natural settlement. Do not spread if planting soil or subgrade is frozen, muddy, or excessively wet. a. Reduce elevation of planting soil to allow for soil thickness of sod.

B. Unchanged Subgrades: If turf is to be planted in areas unaltered or undisturbed by excavating, grading, or surface-soil stripping operations, prepare surface soil as follows: 1. Remove existing grass, vegetation, and turf. Do not mix into surface soil. 2. Loosen surface soil to a depth of at least 6 inches. Apply soil amendments and fertilizers

according to planting soil mix proportions and mix thoroughly into top 6 inches of soil. Till soil to a homogeneous mixture of fine texture. a. Apply fertilizer directly to surface soil before loosening.

3. Remove stones larger than 1 inch in any dimension and sticks, roots, trash, and other extraneous matter.

4. Legally dispose of waste material, including grass, vegetation, and turf, off Owner's property.

C. Finish Grading: Grade planting areas to a smooth, uniform surface plane with loose, uniformly fine texture. Grade to within plus or minus 1/2 inch of finish elevation. Roll and rake, remove ridges, and fill depressions to meet finish grades. Limit finish grading to areas that can be planted in the immediate future.

D. Moisten prepared area before planting if soil is dry. Water thoroughly and allow surface to dry before planting. Do not create muddy soil.

E. Before planting, obtain Engineer's acceptance of finish grading; restore planting areas if eroded or otherwise disturbed after finish grading.

3.2 SEEDING

A. Do not broadcast or drop seed when wind velocity exceeds 5 mph. Evenly distribute seed by sowing equal quantities in two directions at right angles to each other. Do not seed against existing trees. Limit extent of seed to outside edge of planting saucer.

B. Sow seed at a total rate of 3 to 4 lb/1000 sq. ft.

C. Rake seed lightly into top 1/8 inch of soil, roll lightly, and water with fine spray.

D. Protect seeded areas with slopes not exceeding 1:6 by spreading straw mulch. Spread uniformly at a minimum rate of 2 tons/acre to form a continuous blanket 1-1/2 inches in loose thickness over seeded areas. Spread by hand, blower, or other suitable equipment.



1. Anchor straw mulch by crimping into soil with suitable mechanical equipment.

E. Protect seeded areas from hot, dry weather or drying winds by applying compost mulch within 24 hours after completing seeding operations. Soak areas, scatter mulch uniformly to a thickness of 3/16 inch, and roll surface smooth.

3.3 SODDING

A. Lay sod within 24 hours of harvesting. Do not lay sod if dormant or if ground is frozen or muddy.

B. Lay sod to form a solid mass with tightly fitted joints. Butt ends and sides of sod; do not stretch or overlap. Stagger sod strips or pads to offset joints in adjacent courses. Avoid damage to subgrade or sod during installation. Tamp and roll lightly to ensure contact with subgrade, eliminate air pockets, and form a smooth surface. Work sifted soil or fine sand into minor cracks between pieces of sod; remove excess to avoid smothering sod and adjacent grass. 1. Lay sod across angle of slopes exceeding 1:3. 2. Anchor sod on slopes exceeding 1:6 with wood pegs or steel staples spaced as

recommended by sod manufacturer but not less than 2 anchors per sod strip to prevent slippage.

C. Saturate sod with fine water spray within two hours of planting. During first week after planting, water daily or more frequently as necessary to maintain moist soil to a minimum depth of 1-1/2 inches below sod.

3.4 TURF MAINTENANCE

A. Maintain and establish turf by watering, fertilizing, weeding, mowing, trimming, replanting, and performing other operations as required to establish healthy, viable turf. Roll, regrade, and replant bare or eroded areas and remulch to produce a uniformly smooth turf. Provide materials and installation the same as those used in the original installation.

B. Mow turf as soon as top growth is tall enough to cut. Repeat mowing to maintain height appropriate for species without cutting more than 1/3 of grass height. Remove no more than 1/3 of grass-leaf growth in initial or subsequent mowings.

C. Apply pesticides and other chemical products and biological control agents in accordance with authorities having jurisdiction and manufacturer's written recommendations. Coordinate applications with Owner's operations and others in proximity to the Work. Notify Owner before each application is performed.

3.5 SATISFACTORY TURF

A. Turf installations shall meet the following criteria as determined by Engineer: 1. Satisfactory Seeded Turf: At end of maintenance period, a healthy, uniform, close stand

of grass has been established, free of weeds and surface irregularities, with coverage exceeding Insert coverage.

2. Satisfactory Sodded Turf: At end of maintenance period, a healthy, well-rooted, even-colored, viable turf has been established, free of weeds, open joints, bare areas, and surface irregularities.



B. Use specified materials to reestablish turf that does not comply with requirements and continue maintenance until turf is satisfactory.


REVISED & RE-ISSUED AS AN ATTACHMENT TO ADDENDUM NO. 2 DATED 12/12/2013

14576796 FLOATING DECANTER 12/12/2013 13344 46 7113AD2 - 1 SCIOTO CO. - MINFORD AREA WWTP

SECTION 46 7113

FLOATING DECANTER

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes floating decanter for withdrawal of supernatant from the aerobic digester. Provide either a draw-tube type or floating weir type decanter. Fixed decanters will not be acceptable. The decanter shall be capable of withdrawing decant at liquid depths between at least 9.5 feet and the maximum liquid depth of 14 feet.

1.2 REFERENCE STANDARDS

A. ASTM D2996 , Standard Specification for Filament-Wound "Fiberglass" (Glass-Fiber Reinforced Thermosetting-Resin) Pipe

1.3 SUBMITTALS

A. Action Submittals/Informational Submittals 1. Product Data: Include catalog cut sheets and written description describing operation and

hydraulic characteristics. 2. Shop Drawings: Show dimensions, elevations, weight, size, required clearances, and

anchoring and mounting details. 3. Manufacturer’s Installation Instructions. 4. Manufacturer’s Handling and Storage Instructions.

B. Closeout Submittals: Operation and maintenance manuals.


A. The equipment supplier shall have at least five years experience in the design, application, and supply of decanters for use in aerobic digester applications.


A. Store equipment in accordance with the manufacturer’s written instructions.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Siemens.

B. Aqua-Aerobic Systems, Inc.

C. Or equal.



2.2 DECANTER (DRAW-TUBE TYPE)

A. Description 1. Floating, non-solids-excluding type decanter to extract supernatant. 2. Decanter to comprise an effluent withdrawal manifold with orifices to keep velocities at a

minimum and pull from 18 to 24 inches below the water surface to eliminate entraining floatables.

3. Provide a float so the decanter floats up and down with changing water levels. 4. Capable of intermittent operation. 5. Designed to withdraw approximately 200 gallons/minute.

B. Materials 1. Float and draw tube: fiberglass reinforced plastic. Constructed of machine filament

wound, fiberglass reinforced, thermosetting resin pipe fabricated in accordance with ASTM Specification D-2996.

2. Hose: 4-inch diameter heavy duty wire reinforced rubber with Type E connection. Suitable for abrasive materials and rated at 30 inches mercury vacuum and 15 psi working pressure.

3. Knee brace: steel 4. Support assembly: Support plate welded to a supporting base. Type 304 stainless steel 5. Hardware: Type 18-8 stainless steel.

C. Assembly 1. Integrally attach the draw tube to the float such that the float remains level throughout the

full range of operation and the orifice remain submerged throughout. 2. Connect the main body to the effluent piping through a 4-inch flanged stub. Flange

connection in accordance with ANSI standard 150 pound bolt pattern. 3. To allow vertical movement, provide a “knee” joint comprised of a hose with a flange at

each end to allow vertical movement. Include a support mechanism that allows vertical articulation, but precludes lateral or twisting movement.

D. Provide all necessary supports for the decanter mechanism. Locate supports on the basin floor to support the decanter mechanism when the basin is empty. Mount supports to the basin floor with anchor bolts and grout in place, if necessary.

E. Finishes: Coat all submerged steel items in accordance with Section 09 9600, “High Performance Coatings.”

2.3 DECANTER (FLOATING WEIR TYPE)

A. Description 1. Floating weir type decanter to extract supernatant. 2. Provide a float so the decanter floats up and down with changing water levels. 3. Each floating weir shall be capable of withdrawing decant fluid from 4-6 inches beneath

the liquid surface, regardless of liquid depth, down to the minimum allowable water level The decant liquid shall be drawn through an adjustable weir opening of 2-6 inches. The weir shall be circular in shape and permit liquid to enter the weir from the entire 360 degrees without obstruction.

4. Weir shall include vortex control baffles permanently affixed to the weir. 5. Capable of intermittent operation. 6. Designed to withdraw approximately 200 gallons/minute.



B. Materials 1. Weir: Type 304 stainless steel 2. Modular Float: fiberglass filled with closed cell polyurethane foam having a minimum

density of 2.0 pounds per cubic foot. Completely seal float to prevent the foam from being in contact with the external environment. Provide float with 991 pounds reserve buoyancy to ensure stability and to provide support during servicing.

3. Hose a. 4-inch diameter discharge hose of sufficient length to permit vertical movement of

the floating weir and provide sufficient capacity to handle the design decant flow rate.

b. EPDM tube, tire chord braided with helix wire reinforcement. 4. Restrained Mooring System

a. Galvanized steel mooring frame to permit the assembly to move up and down following the change in liquid level while restrained within the vertical pylons.

b. Moor each floating weir with a restrained mooring system consisting of two 4-inch diameter Schedule 40 vertical pylons with base plate constructed of galvanized steel. Affix each pylon with base plate to the basin floor with 304 stainless steel adhesive anchors. Fill each pylon with concrete.

C. Assembly 1. Integrally attach the discharge hose to the float such that the float remains level

throughout the full range of operation. 2. Connect the main body to the effluent piping through a 4-inch flanged elbow. Flange

connection in accordance with ANSI standard 150 pound bolt pattern.

D. Finishes: Coat all submerged steel items in accordance with Division 09 Section “High Performance Coatings.”

2.4 VALVES AND VALVE ACTUATORS:

A. Provide manual eccentric plug discharge valve for each decanter. Locate valve outside the aerobic digester at the as shown.

B. Eccentric plug valves shall be permanently lubricated and shall be of the tight-closing, rubber seat type. Valves shall be suitable for sewage and wastewater application, shall have throttling capability, and shall be rated 150 lb. WOG. Valve bodies shall be cast iron. Valve plugs shall be balanced type and constructed of either cast iron or ductile iron. Passage size shall be a minimum of 80 percent of the full port area for valves. Upper and lower bearing shall be either stainless steel or bronze and permanently lubricated. Packing shall be U-cup, O-ring or V-type, self adjusting, and wear compensating. Packing shall be replaceable without removing the valve bonnet or plug. All valves shall be leak tested to their full rating prior to shipment. Manual plug valves shall have worm gear actuators with nut operators. Actuators shall be sized for 50 PSI shut off pressure against the face of the plug. Gearing shall be enclosed in a semi-steel housing and be suitable for running in a lubricant. Seals shall be provided on all shafts to prevent entry of dirt and water into the actuator.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install in accordance with the manufacturer’s written instructions.



B. Use non-shrink grout if needed to level support bases.

C. Do not induce stresses on connecting piping.


A. Manufacturer Services: Provide an authorized service representative of the manufacturer to perform the following: 1. Witness the installation of equipment, 2. Perform field adjustments to ensure that the equipment installation and operation comply

with the Specifications. 3. Instruct the Owner's personnel in the proper operation and maintenance of the decanter.

Provide a minimum of 2 hours training.

B. Field Tests: Demonstrate that under all conditions of operation the decanter: 1. Has not been damaged by transportation or installation. 2. Has been properly installed. 3. Has no mechanical defects. 4. Is in proper alignment. 5. Has been properly connected. 6. Is free of all objectionable vibration. 7. Operates as specified.

C. Allow the Owner and the Engineer, at the option of either, to witness field tests.
