Specs_Lagoon_site_upgrades_7-28-2016.pdf

The Great Smoky Mountains National Park

Cades Cove Lagoon Site Upgrades Townsend, TN

PMIS # 149262

July 28, 2016

Table of Contents

Specification Section Issued

Division 1 – General Requirements

Section 01100 – Summary of Work Award Section 01270 – Price and Payment Award Section 01310 – Project Management and Coordination Award Section 01330 – Submittal Procedure Award Section 01430 – Quality Assurance Award Section 01560 – Barriers Award Section 01600 – Materials and Equipment Award Section 01770 – Project Closeout Award

Division 2 – Site Work

Section 02310 – Grading Award Section 02315 – Excavation, Trenching, and Backfill Award Section 02316 – Rock Excavation Award Section 02372 – Environmental Protection Award Section 02511 – Water Service Lines Award Section 02705 – Road Restoration Award Section 02920 – Topsoiling, Seeding, Fertilizing Award

Division 16 – Electrical

Section 16050 – Basic Electrical Material and Methods Award

07/28/2016 01100 Statement of Work - 1 of 4

SECTION 01100

STATEMENT OF WORK

PART 1 - GENERAL

1.01 SUMMARY

A. The work to be performed under this contract shall consist of furnishing the following to perform the work outlined in these specifications and as indicated by Project Drawings:

1. tools

2. equipment

3. materials

4. labor

5. supplies

6. manufactured articles

7. all transportation to complete the work

8. temporary facilities

B. Location of Work: Cades Cove Campground, Great Smoky Mountains

National Park, Townsend, TN.

C. Incidental Items: All work, materials, and services not expressly listed as being provided by others or not expressly called for in the contract but are necessary for the completion of the work in good faith, shall be furnished, installed, and performed by the contractor.

1.02 SUMMARY OF MATERIALS TO BE PROVIDED BY GOVERNMENT

A. Government will operate lagoons during construction using by-pass pumps.

1. Contractor shall have maximum 30 continuous days to complete upgrades to both structures

B. Liquidated Damages of $150 per day beyond 30 days shall be assessed.

1.03 SUMMARY OF WORK TO BE DONE BY CONTRACTOR

A. Sewage Lagoon Pond Outlet Structure Rehabilitation

1. Remove existing shear gate valves from exterior of structure leaving flanges intact

07/28/2016 01100 Statement of Work - 2 of 4

a. Diving or Damming will be allowed, however, site must be returned to original conditions once work is completed.

2. Remove existing piping on the interior of structure leaving pipe flanges penetrating structure intact.

3. Install new lagoon level controls (contractor to propose solution)

a. Must be capable of draining lagoon (as close as current structure can)

b. Must be capable of operating the lagoon within a 3-5 foot deep operating range and overflowing into structure (prevent overtopping of dike) at 6 foot deep.

c. Control structure must not leak beyond 0.1gpm per foot of seals.

d. Design head equal to 7 feet or more shall be used.

e. Weir or other level control device must have capability to read instantaneous flow in gpd without the use of electricity

f. New level controls may be installed on existing piping or a new wall (Stainless steel or Aluminum) constructed inside or outside of structure with level controls. If outside operating handle must be close enough to structure to be operated without leaning over rails unless contractor provides other provisions.

g. Design Calculations may be asked for depending on size of materials, use or non-use of premanufactured components, etc.

(for example, contractor A uses a 1/32” piece of sheet steel, contractor B uses 2” piece of sheet steel for an interior wall.

Contractor A may be asked for Design calculations showing the wall will support the loads exerted on it)

4. Flood depth gauge installed outside structure equal to Crain 4” wide stream gauge with feet, tenths and 100ths gradations. (Full 7 feet of structure)

B. Tank Access Cover and Concrete Pad

1. Install 2-3 aluminum access doors over the 3 existing tank risers.

a. Use a gravel base to build up area as needed to allow new covers to be installed above risers and provide suitable base for concrete pad.

b. Install new 1” conduit to risers, with sweeps outside of riser and extending 12” beyond slab. Conduit shall be 18” below existing grade.

c. Concrete is to be one slab for all three hatches and extend at least one foot beyond aluminum hatches in all directions.

d. Minimum concrete thickness of 4” or as required by access hatch.

e. Access Hatch equal to a Halliday S1R series hatch

C. Filter Vault Replacement

07/28/2016 01100 Statement of Work - 3 of 4

1. Install new open bottom vault with aluminum access hatch

a. Use a minimum of 6” compacted gravel base to set vault on

b. Minimum hatch dimension 30”x60”, equal to Halliday Products

S1R3060.

2. Replumb as necessary to set vault

D. BID OPTION 1: Replace Meter Boxes

1. Replace the plastic meter boxes with polymer concrete boxes

a. Use a minimum of 6” compacted gravel base to set vault on

b. Minimum box dimension of 15” x 25”

c. Body Tier 22 rated

d. Cover Tier 15 rated with slip resistant tread.

e. Equal to Old Castle H-Series 1324 polymer concrete enclosure

E. BID OPTION 2: Water Service Line Replacement

1. Replace approximately 485 feet of water service line with 2” HDPE

IPS SDR 11 PE 4708 water service line.

a. Reconnect water at beginning, install Brass TEE and 1” curb stop and connect to yard hydrant at water trough and install 2” curb stop at tie in point to Lagoons. Convert back to PVC and reduce and connect to existing line after curb stop.

F. BID OPTION 3: Fence Removal

1. Remove section for chain link fence with barbwire between the

Lagoons and the drip disposal field.

a. Remove posts and all appurtenances

b. Fill post holes larger than 6” with gravel flush with existing ground

c. Properly dispose of removed materials.

G. BID OPTION 4: Electrical Outlets

1. Install new 20 amp circuit with 20 amp receptacles around the lagoon.

a. 1 AWG THWN copper wires for Hot (Black), Neutral (White) and

Ground (Green) in 1.5” SCH 40 Conduit

b. Install Junction box at each receptacle location with minimum dimensions of 12” x 12” x 6”, NEMA 3R rating minimum.

c. Install pre-assembled 20 Amp Outlet with GFCI receptacle in weather resistant enclosure equal to GE 20 Amp backyard outlet with dark green finish model # U010010GRP.

d. Connect/ splice wires in junction box using an insulated multitap connectors equal to Polaris Model # IPL1/0-3B

07/28/2016 01100 Statement of Work - 4 of 4

e. Wires from connectors to outlets shall be 12 AWG minimum.

f. Install wires from junction box to receptacle enclosure using flexible conduit with slack to accommodate any settling.

g. Install enclosures on a 4x4 wooden post 2 feet in ground and 2 feet above ground.

h. Panel Tie in – Contractor has the option of installing junction box to reduce wire size to fit into two 20 amp breakers or installing a large two pole breaker and feeding 1 pole to each circuit as long as the panel is properly labelled.

i. Panel is a Square D – QO panel.

1.04 SAFETY

A. All aspects of jobsite safety is the responsibility of the contractor. Sub-contractors, regardless of being an excluded party (i.e. owner of company), are required to follow all Federal, State, and Local safety laws. This includes, but is not limited to;

1. Fall Protection

2. Excavation and Trenching

3. Hard hats

4. Eye Protection

1.05 DISTURBED AREAS

A. All areas that are disturbed by the contractor are to be returned to their original condition or better. This includes, but is not limited to;

1. Sidewalks

2. Roadways

3. Grass

4. Vegetation

END OF SECTION

07/27/2016 01270 Price & Payment.doc- 1 of 8

GRSM 149262

SECTION 01270

PRICE AND PAYMENT

A. Work covered by this section includes method of measurement and basis of payment for all divisions included.

B. Payment for the various items of the Schedules, as further specified herein, shall include all compensation to be received by the contractor for furnishing all tools, equipment, materials, labor, supplies, manufactured articles, transportation, and temporary facilities required to complete the work in accordance with contract documents including incidentals.

C. Respective prices and payment shall constitute full compensation for all work completed including incidentals.

D. All items not expressly listed as being provided by others that are necessary for the completion of work shall be furnished and installed by the contractor.

E. No payment shall be made for mobilization and demobilization of equipment.

1.02 ESTIMATED QUANTITIES

A. All quantities stipulated in the schedule or other contract documents are approximate and are to be used: (1) as a basis for estimating the probable cost of the work and (2) for the purpose of comparing the bids submitted.

B. The contractor shall be paid for actual quantities installed based on the quantities measured in the field. The actual amounts of work completed and materials furnished may differ from estimated quantities. The contractor shall make no claim for damages, anticipated profits, or otherwise, on account of differences between the estimated amounts and the actual amount of work performed and materials furnished.

1.03 SURVEY AND MEASUREMENTS

A. All quantity measurements shall be the responsibility of the contractor and will be verified by the COR.

B. All measurements and subsequent payments will be based on completed and accepted work performed in strict accordance with the drawings, specifications, and other contract documents.

07/27/2016 01270 Price & Payment.doc- 2 of 8

PART 2 – SCHEDULE ITEMS

2.01 GENERAL

A. Payment shall be full compensation to complete the work items in good faith, including incidental work.

B. In addition to the those things listed under each item, the unit price shall be full compensation for all of the following:

1. General requirements in Division 01, but not limited to the following.

a. Submittals

b. Record drawings

c. Schedules and Plans

2. Specific requirements in Division 02, including but not limited to the following (unless otherwise expressly defined as a line item in the bid schedule):

a. Erosion control

b. Clearing and grubbing

c. Removal and replacement of obstructions

d. Associated trenching, excavation and backfill including the removal of any nuisance water, bedding, haunching, and compaction.

e. Disposal of any excess material

f. Traffic control

g. Rough grading

h. Finish work, where called for, including finish grading, topsoiling, and landscaping

2.02 ITEMS

A. Schedule A: Water Tank Reconditioning

1. Outlet Structure Rehab

a. Measurement: By the Job for the required work to rehabilitate the outlet structure.

b. Basis of Payment: Includes all labor, materials, equipment, tools and all other appurtenances required to complete the rehabilitation of the outlet structure.

07/27/2016 01270 Price & Payment.doc- 3 of 8

2. Access Covers and Concrete Pad

a. Measurement: By the Job for the required work to install the install covers and pour a concrete pad.

all other appurtenances required to install new access covers and pour a concrete pad around the pump vault.

3. Filter Vault Replacement

a. Measurement: By the Job for the required work to install the remove the existing vault and replace with a larger vault.

all other appurtenances required to remove and replace the filter vault.

4. Meter Box Replacement

a. Measurement: By Each of the meter boxes replaced.

all other appurtenances required to install remove and replace the meter boxes.

5. 2” HDPE SDR 11 PE 4708

a. Measurement: Linear feet of pipe installed measured horizontally over the centerline of the pipe.

b. Basis of Payment: Includes all pipe, fittings, flushing, disinfection, pressure testing, warning tape, tracing wire, and all other appurtenances required to complete the work as specified.

6. 2” Curbstop with box

a. Measurement: By Each of the curb stop and box installed.

b. Basis of Payment: Includes all pipe, fittings, tracing wire, and all other appurtenances required to complete the work as specified.

7. Connection to Existing System

a. Measurement: By the Lump Sum for the required work to make the connection to the existing water main.

07/27/2016 01270 Price & Payment.doc- 4 of 8

b. Basis of Payment: Includes all labor, materials, equipment, tools and all other appurtenances required to complete the connection to the existing water main

8. Fence Removal

a. Measurement: By the Job for the removal of the fencing.

all other appurtenances required to complete the removal of the fencing.

9. Electrical Outlets

a. Measurement: By the Job for the required work to install the electrical outlets around the lagoon.

b. Basis of Payment: Includes all labor, materials, equipment, tools and all other appurtenances required to install electrical outlets around the lagoon.

PART 3 – EXECUTION (N/A)

03/02/2015 01310 Project Management and Coordination.doc Page 1 of 2

GRSM 203460 - 203461

SECTION 01310

PROJECT MANAGEMENT AND COORDINATION

A. Section includes the preconstruction conference, construction scheduling and coordination requirements.

1.02 PRE-CONSTRUCTION CONFERENCE

A. Required after award of contract and prior to start of construction.

B. Representatives from the following shall attend.

1. Prime Contractor

2. Subcontractors

3. Owner

C. Contracting Officer/ COR will arrange a date that is mutually acceptable to all parties planning to attend.

D. Contractor shall notify subcontractors of time and date of meeting.

1.03 CONSTRUCTION SCHEDULE

A. Present project engineer with a written preliminary construction schedule (Critical Path Method) containing start and completion dates of the major items at the preconstruction meeting.

B. Notify the COTR three full working days in advance of any construction.

C. Communicate major changes to the schedule to the COTR in writing.

1.04 COORDINATION WITH OTHER CONTRACTORS/UTILITIES

A. Coordinate work with other contractors (i.e. roads, building, etc) in the area as necessary to complete the work specified.

B. Coordinate work with local utilities (i.e. water and sewer, power, telephone).

Note: All buried utilities may not be shown on the plans. The Contractor is responsible for having utilities marked prior to construction.

03/02/2015 01310 Project Management and Coordination.doc Page 2 of 2

This Page Intentionally Left Blank

03/02/2015 01330 Submittal Procedure - 1 of 2

SECTION 01330

SUBMITTAL PROCEDURE

A. This section includes information on submittal procedures. Materials requiring submittal are listed in the appropriate specification section.

1.02 SUBMITTAL PROCEDURES

A. Submit 4 copies of submittals to the COTR, unless requested otherwise.

B. Identify each cut sheet or shop drawing with the following information:

1. Contract number.

2. Supplier.

3. Specification section to which the submittal pertains.

C. Submit the following information, as applicable:

1. Manufacturer’s cut sheets indicating compliance with references (e.g.

applicable ASTM, AWWA standards).

2. Laboratory results, as applicable.

3. Dimensional drawings or shop drawings, as applicable.

4. Other information necessary for the Project Engineer to determine compliance with the specifications.

D. Variations from the contract documents or products specified:

1. Bring any and all submitted variations to the attention of the Contracting Officer.

2. Variations not brought to the Contracting Officer‘s attention, in writing, and that conflict with the Contract Documents, do not relieve the contractor from the requirements of the contract documents.

E. Revise and resubmit submittals as required and identify all changes made since previous submittal.

1. No additional contract time will be given for resubmittals required as a result of the contractor submitting incomplete or rejected submittals.

F. Distribute copies of reviewed submittals to concerned parties, (i.e. suppliers, sub-contractors).

03/02/2015 01330 Submittal Procedure - 2 of 2

G. Submit written communication of any inability to comply with the Project Engineer’s comments.

H. Submit information to the Contracting Officer at least three weeks in advance of the work to be performed.

I. Approval of submittals must be provided by the Contracting Officer prior to installation of materials.

1.03 DEFINITIONS

A. Approved: Deemed to be acceptable for use in accomplishing the requirements of the plans and specifications, but does not extend to the means, methods, or procedures of construction (except where specific means, methods, or procedures are specifically required by the contract documents) and does not imply approval of the system or construction in which the submitted item is a part.

B. Conditionally Approved: Deemed to be acceptable for use in accomplishing the requirements of the plans and specifications, if the conditions noted in the submittal approval letter are met. The approval does not extend to the means, methods, or procedures of construction (except where specific means, methods, or procedures are specifically required by the contract documents) and does not imply approval of the system or construction in which the submitted item is a part.

C. Rejected: Deemed unacceptable for the use for which it was submitted.

D. Incomplete Submittal: Information is insufficient to ascertain acceptability.

Neither approval nor rejection is implied.

03/02/2015 01430 Quality Assurance.doc - 1 of 2

SECTION 01430

QUALITY ASSURANCE

A. This section includes prerequisites and procedures to assure the quality of construction.

1.02 CONTRACTORS QUALIFICATIONS

A. Work shall be performed by a registered contractor in the state where the project is proposed and for the type of construction and magnitude of construction being performed.

1.03 INSTALLER QUALIFICATIONS

A. Work shall be performed under the direction of personnel licensed in the state where the project is proposed and where licensing of the trade is regulated by the state including, but not limited to, plumbing, well drilling, septic system installation, HVAC, and electrical work.

B. Where no license is required, work shall be performed under the direction of personnel certified by the manufacturer of the product where applicable.

1.04 CONTROL OF INSTALLATION

A. Review materials for acceptability when delivered to the site.

B. Store and handle materials to prevent damage.

C. Review materials, services, and workmanship to ensure that work is performed in accordance with the specifications.

D. Comply fully with manufacturers’ instructions.

E. Should manufacturers’ instructions conflict with contract documents, request clarification from Project Engineer before proceeding.

F. Correct defective work to the satisfaction of the Contracting Officer.

1.05 SAMPLES

A. When requested by the Contracting Officer, supply samples of materials proposed for use.

03/02/2015 01430 Quality Assurance.doc - 2 of 2

1.06 START-UP

A. Prior to start-up, ensure that all equipment is ready for its use, as designed.

B. Ensure that all power sources are balanced and ready for use.

C. Provide the services of manufacturers’ field representative for start-up, testing, and adjustment of all major equipment items.

D. Provide reports from the manufacturer, including their observations and documentation of workmanship to the Contracting Officer within 30 days of manufacturer’s visit, unless a sooner response is required by the applicable specification section.

E. Work will not be considered complete until all systems and subsystems have been tested for proper functionality and proper adjustment.

1.07 WARRANTY

A. Provide a minimum one (1) year warranty for all materials and labor, covering defects in the materials or deficiencies resulting from contractor installation.

B. Provide additional warranties as required by specific sections.

03/02/2015 01560 Barriers.doc - 1 of 4

SECTION 01560

BARRIERS

PART 1 GENERAL

A. The work of this section consists of furnishing, installing, and maintaining barriers to protect existing facilities and the public from construction operations

1.02 SUBMITTAL

A. Barrier Plan

PART 2 PRODUCTS

A. Material may be new or used, but shall be suitable for intended purpose. Fences and barriers shall be structurally adequate and neat in appearance.

2.02 FENCING

A. Security Fence: Use around staging area and stock pile area. Chain link, 2-inch mesh, minimum height, 6 feet. Posts shall have portable bases and shall not be installed in the ground.

B. Safety Barrier Fence: Use around all other improvement areas unless otherwise directed by the Contracting Officer. Orange plastic fence, minimum height, 4 feet.

2.03 BARRICADES AND SIGNS

A. Manual on Uniform Traffic Control Devices (MUTCD), Part VI, latest edition.

2.04 LUMBER

A. Free of nails, large knot holes and splinters.

2.05 BARRIER TAPE

A. Banner Guard, imprinted with "DANGER", manufactured by Reef Industries, Inc., Houston, Texas, or approved equal.

03/02/2015 01560 Barriers.doc - 2 of 4

PART 3 EXECUTION

3.01 PROTECTION OF PUBLIC

A. Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry.

B. Protect pedestrian traffic by barricades or fences.

C. When pedestrian traffic is detoured around construction site, provide temporary walkways with protection as required at ends. For walkways, use lumber running parallel to direction of traffic movement and provide ramps at changes of elevation.

D. Cover pipes, hoses, and power lines crossing sidewalks and walkways with troughs using beveled edge boards.

E. Erect and maintain sufficient detour signs at road closures and along detour routes.

3.02 SECURITY FENCES

A. Before starting work, install all security fence and barriers.

B. Locate vehicular gates to avoid interference with traffic on public thoroughfares.

C. Locate pedestrian entrance gates as required to provide controlled personnel entry.

D. Chain link fence may be installed (Contractors option) in the following locations:

1. Use around staging area and stock pile area.

E. 4’ Safety Barrier fence shall be installed in the following locations:

1. Areas of the work site as contractor deems necessary for safety and protection of work area.

3.03 BARRIER TAPE

A. Install where directed by Contracting Officer. Keep a minimum of two rolls on site at all times.

03/02/2015 01560 Barriers.doc - 3 of 4

3.04 REMOVAL

A. Completely remove barriers no longer needed when approved by Contracting Officer.

03/02/2015 01560 Barriers.doc - 4 of 4

03/02/2015 01600 Material and Equipment.docx Page 1 of 2

SECTION 01600

MATERIAL AND EQUIPMENT

PART 1 GENERAL

A. The work of this section consists of the general procedures for handling, storing, and protecting material and equipment.

1.02 TRANSPORTATION AND HANDLING

A. Arrange deliveries of materials in accordance with construction schedules;

coordinate to avoid conflict with work and conditions at the site. Deliver materials in undamaged condition, in manufacturer's original containers or packaging, with identifying labels intact and legible. Contractor is encouraged to obtain materials in biodegradable or recyclable/reusable packaging which uses the minimum amount of packaging possible.

B. Newfound Gap Road, Route 441, is closed to commercial truck traffic. All deliveries in commercial vehicles shall take the shortest route through the Park to their destination. (i.e. Deliveries to Sugarlands area will enter the Park through the Gatlinburg entrance, Deliveries to Cades Cove will enter the Park through the Townsend entrance, Deliveries to Smokemont will enter the Park through the Cherokee entrance, etc.). Contractor shall ensure that companies making deliveries are aware of the restrictions.

1.03 STORAGE AND PROTECTION

A. Store materials in accordance with manufacturer's instructions, with seals and labels accessible for inspection.

1. Materials stored on-site are the responsibility of the contractor. Items lost, stolen or damaged are the contractors responsibility until the items are installed AND accepted by the Contracting Officer. A material payment does not constitute acceptance of materials.

B. Exterior Storage:

1. Store products subject to damage by the elements in weather tight enclosures.

2. Store fabricated products above the ground, on blocking or skids; prevent soiling or staining. Cover products subject to damage or deterioration with impervious sheet coverings; provide adequate ventilation to avoid condensation.

03/02/2015 01600 Material and Equipment.docx Page 2 of 2

C. Protection after Installation:

1. Provide adequate coverings as necessary to protect installed materials from damage resulting from natural elements, traffic, and subsequent

03/02/2015 01770 Project Closeout.doc Page 1 of 2

SECTION 01770

PROJECT CLOSEOUT

A. This section describes the requirements for final cleanup, closeout submittals and final inspection.

1.02 RELATED WORK

A. Section 01430 – Quality Assurance

1.03 DELIVERY

A. Provide all closeout submittals meeting these requirements and any specific requirements of each section.

B. All closeout submittals must be received in a correct and complete manner before final payment can be made.

1.04 DEFINITIONS

A. Record Drawing: A drawing showing the actual installation of facilities, showing changes from the plans, and showing detail enough that future persons can readily locate all objects.

B. Ties: Measurements from permanent easily located objects to an installed object.

PART 2 – PRODUCTS

2.01 CLEANING MATERIALS

A. As recommended by the manufacturer of surface to be cleaned.

PART 3 - EXECUTION

3.01 CLEANING

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish. Restore or refinish surfaces that are damaged due to work of this contract to original condition. Remove grease, dirt, stains, foreign materials, and labels from finished surfaces.

Thoroughly clean building interiors. Pick up all construction debris from

03/02/2015 01770 Project Closeout.doc Page 2 of 2 the site. At time of final inspection, project shall be thoroughly clean and ready for use.

3.02 WARRANTIES

A. Submit all warranty information regarding the materials installed.

B. Minimum warranty information is listed in Section 01430. Specific warranties may be required for each Section of specifications.

3.03 OPERATION AND MAINTENANCE INFORMATION

A. Submit all operation and maintenance information as included in the packaging from the manufacturer regarding the materials installed.

03/02/2015 02310 Grading - 1 of 2

SECTION 02310

GRADING

A. This section includes rough and finished site grading of all areas disturbed during construction.

A. Section 01119 – Revisions to Standard Specifications B. Section 02315 – Excavation, Trenching and Backfill C. Section 02370 – Temporary Erosion and Sediment Control D. Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching

PART 2 – PRODUCTS (Not applicable)

3.01 ROUGH GRADING

A. Grade the area in the vicinity of the excavation to prevent surface water from flowing into the excavation.

B. Maintain existing drainage.

3.02 FINISH GRADING

A. Grade site to true grades as specified on the plans after all structures and piping have been installed.

B. Grade sites for effective drainage away from structures.

C. Dress and trim all slopes.

D. Round off the tops of slopes and toes of slopes.

E. Place topsoil on all disturbed areas and reseed or sod as soon as possible in accordance with Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching.

03/02/2015 02310 Grading - 2 of 2

03/02/2015 02315 Excavation, Trenching & Backfill - 1 of 8

SECTION 02315

EXCAVATION, TRENCHING AND BACKFILL

A. This section includes excavation, trenching and backfill necessary for the construction of the facilities as indicated on the plans including, but not limited to: water mains and service lines, sewer mains and service lines, concrete manholes, septic tanks, and other structures.

1.02 RELATED WORK (as applicable)

B. Section 01720 – Staking and Construction Surveying C. Section 01780 – Closeout Submittals D. Section 02310 – Grading E. Section 02316 – Rock Excavation F. Section 02370 – Temporary Erosion And Sediment Control G. Section 02510 – Water Distribution H. Section 02511 – Water Service Lines I. Section 02530 – Sanitary Sewer J. Section 02531 – Sewer Service Lines K. Section 02532 – Sanitary Sewer Manholes L. Section 02538 – Sewage Force Main M. Section 02705 – Road Restoration N. Section 02920 – Topsoiling, Seeding, Fertilization and Mulching

1.03 REFERENCES

A. Manual on Uniform Traffic Control Devices, latest edition.

B. ASTM D698 – Test Methods for Moisture Density Relations of Soils and Soil-

Aggregate Mixtures Using 5.5 lb. Rammer and 12-in. Drop [Standard Proctor Test].

C. ASTM D2321 – Underground installation of Flexible Thermoplastic Sewer

Pipe.

D. ASTM D2487 – Classification of Soils for Engineering Purposes [Unified Soil

Classification System].

03/02/2015 02315 Excavation, Trenching & Backfill - 2 of 8

1.05 DEFINITIONS

A. Bedding, Haunching and Initial Backfill zones as defined herein and on the standard thermoplastic pipe trench detailed drawing below.

B. Soil Materials as summarized in the table below and defined in ASTM D2321 and ASTM D2487

Description and Comparison of Soil Material Classifications

ASTM D2321 ASTM D2487

Class Type

USCS

Group Symbol Description

IA Manufactured aggregates: ¼ to 1 ½ inch open graded, clean.

* None Closest to “Poorly graded gravel (GP)”

IB Manufactured aggregates: ¼ to 1 ½ inch dense graded, clean.

* None Closest to “Poorly graded gravel with sand (GP)”

II

Coarse sands and gravels with maximum particle size of

1 ½ inch, clean.

GW Well-graded gravels and gravel-sand mixtures; little or no fines.

GP Poorly graded gravels and gravel sand mixtures;

little or no fines.

SW Well-graded sands and gravelly sands; little or no fines.

SP Poorly graded sands and gravelly sands; little or no fines

Coarse sands and gravels with maximum particle size of 1 ½ inch, borderline clean.

GW-GC

SP-SM

Etc.

Sands and gravels which are borderline between clean and with fines

III

Fine sand and clayey gravels.

GM Silty gravels, gravel-sand-silt mixtures.

GC Clayey gravels, gravel-sand-clay mixtures SM Silty sands, sand-silt mixtures SC Clayey sands, sand-clay mixtures

IV Fine grained soils (inorganic) ML Inorganic silts and very fine sands, rock flour, silty or clayey fine sands, silts with slight plasticity.

03/02/2015 02315 Excavation, Trenching & Backfill - 3 of 8

CL Inorganic clays of low to medium plasticity, gravely clays, sandy clays, silty clays, lean clays.

MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts.

CH Inorganic clays of high plasticity, fat clays.

V

Organic soils

OL Organic silts and organic silty clays of low plasticity.

OH Organic clays of medium to high plasticity, organic silts.

PT Peat and other high organic soils.

* USCS system is limited to naturally occurring soils. Manufactured aggregates not covered.

2.01 BEDDING, HAUNCHING AND INITIAL BACKFILL MATERIAL

A. Class I, Class II or Class III, utilized in accordance with restrictions described in Part 3 - Execution.

3.01 GENERAL

A. Trenching and excavation work shall be done in accordance with proper emphasis on safety as determined by the contractor to conform to recommended safety standards such as OSHA 1910 and 1926.

B. Obtain all permits from appropriate road agency for construction within road right of way.

C. Repair damage resulting from settlement, slides, cave-ins, water pressure, and other causes.

D. Provide adequate signs, barricades, fences and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.

1. Placement of construction signs and barricades shall conform to the

“Manual on Uniform Traffic Control Devices, latest edition.”

2. Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise. Barricades shall also be of substantial construction, painted white or with reflective paint to increase their visibility at night.

3. Perform work without obstruction to traffic or inconvenience to the general public and the residents in the vicinity of the work.

03/02/2015 02315 Excavation, Trenching & Backfill - 4 of 8

E. Road Crossing

1. Comply with all construction and material requirements of roadway authorities having jurisdiction.

2. Maintain one lane of traffic open at all times.

3. Refer to Section 02705 – Road Restoration for backfill and restoration requirements.

3.03 EXCAVATION

A. Remove trees and stumps from excavation and site.

B. Remove and stockpile existing topsoil.

C. Install facilities as staked unless otherwise approved by Project Engineer.

D. Maintain surface drainage away from trenching or excavation.

E. Remove unsuitable foundation materials from excavation as shown on the plans or as authorized by the Project Engineer.

F. Maintain a minimum 1-foot clearance between outer surface of structure being installed and wall of excavation.

G. Rock encountered shall be classified, excavated and measured in accordance with Section 02316 – Rock Excavation

3.04 TRENCHING

A. Bottom width: No less than 12 inches or more than 24 inches wider than the outside diameter of the pipe.

B. Depth: Provide minimum cover as specified, or depths shown on plans.

3.05 BEDDING

A. If existing soil cannot provide uniform, stable bearing support, over-excavate 6 inches below bottom of pipe or structure and provide bedding material.

B. Utilize Class I, II or III materials as appropriate for bedding as listed in Table below.

03/02/2015 02315 Excavation, Trenching & Backfill - 5 of 8

Use of Soils and Aggregate for Bedding Class IA Class IB Class II Class III General Excellent pipe support. Excellent drainage.

Excellent pipe support. Good drainage. Minimizes migration of adjacent material.

Good pipe support. Fair drainage.

Reasonable pipe support. Poor drainage

Compaction Not required Not required Required 90% of Standard Proctor.

Required 90% of Standard Proctor.

Wet Conditions (below current or future water table). Rock Cuts

Acceptable. Must use same material for Haunching.

Acceptable. Must use same material for Haunching.

Acceptable. Clean groups only suitable for drainage blanket.

Not- Acceptable

Dry Conditions Acceptable Acceptable Acceptable Acceptable

3.06 HAUNCHING AND INITIAL BACKFILL

A. General

1. Provide complete and uniform bearing and support for the pipe, including allowance for bell holes, or structure.

2. Work material under and around the pipe to ensure full pipe support.

3. Prevent movement of the pipe during placement of material.

4. Avoid contact between the pipe and mechanical compaction equipment.

B. Utilize Class I, II or III materials as appropriate for haunching and initial backfill as listed in Table below. No frozen materials or frozen clods.

Use of Soils and Aggregate for Haunching and Initial Backfill Class IA Class IB Class II Class III General Excellent pipe support. Excellent drainage. Install to a minimum of 6” above the pipe crown.

Excellent pipe support. Good drainage. Minimizes migration of adjacent material. Install to a minimum of 6” above the pipe crown.

Good pipe support. Fair drainage. Install and compact to a minimum of 6” above the pipe crown.

Reasonable pipe support. Poor drainage. Install and compact to a minimum of 6” above the pipe crown.

Compaction Not required Not required Required 85% of Standard Proctor.

6 inch maximum lifts.

Required 90% of Standard Proctor.

6 inch maximum lifts.

Wet Conditions (below current or future water table). Rock Cuts

Acceptable. Must use same material for Bedding.

Extend Haunching to the top crown of the pipe.

Acceptable. Must use same material for Bedding. Extend Haunching to the top crown of the pipe.

Acceptable. Clean groups only suitable for drainage.

Not- Acceptable

Dry Conditions Acceptable Acceptable Acceptable Acceptable

03/02/2015 02315 Excavation, Trenching & Backfill - 6 of 8

3.07 FINAL BACKFILL

A. Backfill remainder of excavation with native material, free from large clods, large stones, organic material or frost chunks.

B. Compact in 12-inch lifts to a density not less than the density of the surrounding undisturbed soil.

1. Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D 698.

2. Provide 4 feet minimum cover over the top of the pipe before utilization of hydrohammer compaction equipment.

3. Provide 3 feet minimum of backfill over the pipe before wheel loading the trench.

C. Conform to Section 02705 – Road Restoration for backfill requirements under roadways.

D. Backfill and compact around manholes, valve boxes, and other appurtenances in 12-inch lifts.

1. Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D 698.

E. Backfill around septic tanks in 18-inch lifts.

1. Compact in a manner that will not produce undue strain on the tank.

2. Compaction may be accomplished with the use of water, provided the material is thoroughly wetted from the bottom up, and the tank is filled with water to prevent floating.

F. Repair any trenches improperly backfilled or where settlement occurs, then refill and compact.

G. Restore surface to the required grade and compaction. Conform to Section

02310 – Grading for rough grading, finish grading and site surface drainage.

H. Remove all surplus backfill materials to a location approved by the Engineer.

03/02/2015 02315 Excavation, Trenching & Backfill - 7 of 8

3.08 REMOVAL OF NUISANCE WATER

A. Remove nuisance water entering the trenches. Nuisance water that can be removed through the use of sump or trash pumps is not considered dewatering.

B. Keep trenches free from water until the facilities are in place, sealed against the entrance of water, and backfill has been placed and compacted above the water level.

3.09 LOCATE EXISTING UTILITIES

A. Field locate all existing underground utilities.

1. Utilize state “811”,“dig-safe” or “one-call” hotlines.

2. Contact all other utility owners not covered by the state “dig safe” hotlines.

3.10 UTILITY CONFLICTS

A. Protect existing utilities from damage during excavation and backfilling operations.

B. Provide temporary support for existing water, gas, telephone, power, or other utility services that cross the trench until backfilling of trench is complete

1. Compact backfill to 95% of Standard Proctor Density under disturbed utilities.

2. Repair or replace any damaged existing utilities, at no additional cost to the project.

C. Water and sewer main crossing and parallel installation

1. Maintain a 10 foot horizontal separation (O.D. to O.D.) for parallel mains.

2. Upon approval by the Engineer, water and sewer mains may be installed closer than 10 feet, provided all of the following conditions;

a. Vertical separation is 18 inches (O.D. to O.D.)

b. Water main is above the sewer main.

c. Separate trenches are maintained.

3. Maintain a minimum 18-inch vertical separation (O.D. to O.D.) for crossing mains.

03/02/2015 02315 Excavation, Trenching & Backfill - 8 of 8

a. Lay pipe with joints equidistant from the point of crossing.

4. If it is impossible to meet any of the above separation distances and deviations, one of the following methods shall be adhered to.

a. Sewer main shall be constructed to water main pressure pipe standards, and successfully pass a 150-psi pressure test prior to backfilling.

b. Either the water main or the sewer main may be encased in a watertight carrier pipe that extends 10 feet on both sides of the crossing. The carrier pipe shall be of materials approved by the regulatory agency for use in water main construction.

D. Water and sewer service crossing and parallel installation.

1. Maintain a 30-inch horizontal separation from water and sewer services.

2. Maintain a 12-inch vertical separation for crossing water and sewer services.

3. Water service line splices or joints will not be permitted within 10 feet of a sewer line crossing.

3.12 MOVING FENCES AND MINOR STRUCTURES

A. Remove and reset culverts, drainage pipes or other minor structures that fall within the alignment of the new construction, to their original location and grade.

B. Visit the project site and determine actual conditions with regard to the existence of old car bodies, abandoned houses, fences, driveways, trees, stumps, brush, sidewalks, approaches, and other miscellaneous obstacles to

1. Unless specifically referenced in a bid item, no separate payment will be made for the removal or replacement of these items.

3.14 RECORDS

A. Conform to as-built requirements in Section 01780 – Closeout Submittals.

03/02/2015 02316 Rock Excavation.doc - 1 of 2

SECTION 02316

ROCK EXCAVATION

A. This section includes rock excavation necessary for the construction of the facilities as indicated on the plans including.

1.02 RELATED WORK (as applicable)

A. Section 01119 – Revisions to Standard Specifications

1.03 DEFINITION

A. Solid Rock

1. Large masses of rock which, in the judgment of the Project Engineer, cannot be excavated without drilling, ripping equipment or other specialized equipment.

B. Loose Rock

1. Boulders and other detached stones each having a volume of 2-cubic yard or less.

2. No additional payment will be made for loose rock.

1.04 RESPONSIBILITIES

A. Protect adjacent utilities lines, property, and structures.

B. Repair damage caused by rock excavation operations.

C. Remove excavated rock from site unless otherwise directed by the Project

Engineer.

PART 2 – PRODUCTS (Not Applicable)

03/02/2015 02316 Rock Excavation.doc - 2 of 2

PART 3 – EXECUTION

3.01 ROCK MEASUREMENT

A. Measure solid rock to the nearest 0.1 foot from the surface and no less than every ten feet along the rock profile.

1. Trenches

a. Take measurements from the top of the rock to a point 6 inches below the invert of the pipe and 12 inches from each side of the pipe or appurtenance with a maximum 30-inch trench width allowed.

2. Structures

a. Take measurements starting at 24 inches from the edge of the structure.

B. Measure quantity of loose rock in cubic yards.

C. Contact Project Engineer or representative prior to rock measurement.

D. An NPS representative shall be present during all rock measurement, unless otherwise approved by the Project Engineer.

3.02 EXCAVATION

A. Depth: Excavate a minimum of 6 inches below the pipe invert or structure.

B. Width (structures): Maintain a minimum 1-foot clearance between outer surface of structure being installed and wall of excavation.

C. Width (piping): Maintain a minimum 6-inch clearance between outer surface of pipe being installed and wall of excavation.

D. Refer to Section 02315 – Excavation, Trenching and Backfill for backfilling requirements.

1. If the native backfill material contains large rocks and boulders, the initial backfill layer shall be increased to at least 18 inches above the top of the pipe.

03/02/2015 02370 Temporary Erosion and Sediment Control - 1 of 4

SECTION 02370

TEMPORARY EROSION AND SEDIMENT CONTROL

A. This section includes erosion and siltation control measures accomplished through the use of interception embankments, berms, dikes, dams, silt fences, settling basins, slope paving, ditch checks, rip-rap, mulches, erosion mats, and other erosion control devices or methods.

A. Section 02310 – Grading

C. Section 02920 – Topsoiling, Seeding, Fertilizing and Mulching

A. North Carolina Division of Water Quality – Stormwater Best Management Practices Manual

B. Tennessee Department of Environment and Conservation – Erosion and Sediment Control Handbook

C. Environmental Protection Agency - 1987 Congressional Amendments, Clean

Water Act, Section 402.

1.04 SUBMITTALS

A. Biodegradable Logs

B. Silt fence material, (or alternate erosion control material proposed).

C. Erosion Control Plan (If requested by the Project Engineer)

1.05 QUALITY ASSURANCE

A. Erosion control materials, methods and practices shall conform to the applicable state agency handbooks of Best Management Practices.

B. Obtain and pay for permits and inspections in accordance with the provisions of all local government agencies having jurisdiction. No additional claim for

03/02/2015 02370 Temporary Erosion and Sediment Control - 2 of 4 compensation will be allowed because of the contractor’s failure to obtain or pay for such permits and inspections.

PART 2 - PRODUCTS

2.01 POSTS

A. Wood or steel, 2” x 2” x 54” minimum.

2.02 EROSION BALES

A. Will only be allowed if made of non-grass material (no straw or hay)

2.03 SILT FENCING

A. 15 mil thick screen fabric with a minimum of 120 pounds of grab tensile strength and an equivalent minimum opening size of 170.

B. All seams shall be heat sealed or sewn

2.04 BIODEGRADABLE LOG

A. Sized to accommodate drainage area

B. Made of non-grass material (no straw or hay)

C. America Excelsior Company Curlex logs or equal

2.05 OTHER

A. Other materials proposed by the contractor shall conform to standards published by the applicable state agency handbooks of Best Management Practices (BMP’s).

3.01 GENERAL

A. Coordinate temporary and permanent erosion control measures to assure economical, effective and continuous erosion control.

B. Keep construction areas small.

C. Divert drainage away from construction areas.

03/02/2015 02370 Temporary Erosion and Sediment Control - 3 of 4

D. Perform construction in and adjacent to rivers, streams, lakes or other waterways in such a manner as to avoid washing, sloughing or deposition of material into waterways which will result in undue or avoidable contamination, pollution or siltation of such waterways.

E. Inspect and maintain erosion control materials to ensure its continued effectiveness.

1. Remove sediment material captured by erosion control systems before systems fails.

2. Inspect and repair erosion control systems within 48 hours of rain event.

F. Remove erosion control only after the area has stabilized and vegetation has developed to the extent that further erosion is unlikely.

G. Submit an erosion control plan in accordance with State BMP’s and Federal

EPA requirements, if the area to be disturbed is greater than 1 acre total.

3.02 TEMPORARY EROSION CONTROL

A. Use temporary erosion control measures to protect ditches and drainage ways as shown on the detailed drawings and as directed by the project engineer.

B. Biodegradable Logs

1. Place logs at right angles to the direction of flow.

2. Securely anchor each log with stakes as shown on the plans.

C. Silt fencing

1. Place silt fences in an arc or horseshoe shape with the ends pointing up towards the slope.

D. Spoil and Material piles

1. Cover all soil/gravel piles with a tarp(s) at the end of each day.

03/02/2015 02370 Temporary Erosion and Sediment Control - 4 of 4

03/02/2015 02372 Environmental Protection – Page 1 of 4

SECTION 02372

ENVIRONMENTAL PROTECTION

PART 1 – GENERAL

1.01 SECTION INCLUDES

A. Requirements for prevention of environmental pollution and damage as the result of construction operations under this Contract.

1.02 RELATED WORK

A. Section 02310 – Grading

B. Section 02315 – Excavation, Trenching, and Backfilling

1.03 SYSTEM DESCRIPTION

A. Environmental pollution and damage are defined as the presence of chemical, physical, or biological elements or agents which adversely affect human health or welfare; unfavorably alter ecological balances of importance to human life;

affect other species of importance to man; or degrade the utility of the environment for aesthetic, cultural, and/or historical purposes.

B. The control of environmental pollution and damage requires consideration of air, water, and land, and includes management of visual esthetics, noise, solid waste, radiant energy and radioactive materials, as well as other pollutants.

1.04 QUALITY ASSURANCE

A. Comply with this specification and the projects Storm Water Pollution Prevention Plan (if applicable).

B. Inspection Logs will need to be submitted with Applications for Payment.

1.05 SUBMITTALS

A. Qualifications of Inspector (if SWPPP is issued)

03/02/2015 02372 Environmental Protection – Page 2 of 4

2.01 STORM WATER POLLUTION INSPECTOR

A. Contractor is to provide a state qualified and licensed (if applicable) inspector to maintain and update the Storm Water Pollution Prevention Plan.

3.01 PROTECTION OF ENVIRONMENTAL RESOURCES

A. Protect the environmental resources within the project boundaries and those affected outside the limits of permanent Work during the entire period of this Contract. Confine activities to areas defined by the Drawings and Specifications.

B. Protection of Land Resources:

1. Prior to the beginning of any construction, identify all land resources to be preserved within the Work area.

2. Do not remove, cut, deface, injure, or destroy land resources including trees, shrubs, vines, grasses, top soil, and land forms without special permission from the OWNER.

3. Do not fasten ropes, cables, or guy wires to any trees for anchorage unless specifically authorized. Where such special emergency use is permitted, provide effective protection for land and vegetation resources at all times.

C. Location of Field Offices, Storage, and Other Contractor Facilities:

1. Place field offices, staging areas, stockpile storage, and temporary buildings in areas designated by the OWNER.

2. Temporary movement or relocation of facilities shall be made only on approval by the OWNER.

D. Disposal of Waste:

1. Dispose of solid wastes (excluding clearing debris) in containers which are emptied on a regular schedule. All handling and disposal shall be conducted to prevent contamination.

2. Transport all solid waste off property and dispose of it in compliance with applicable Poarch Band of Creek Indians, Federal, State, and local requirements for solid waste disposal.

3. Store chemical waste in corrosion resistant containers, removed from the Work area and disposed of in accordance with applicable Poarch Band of Creek Indians, Federal, State, and local regulations.

4. Discarded materials other than those which can be included in the solid waste category shall be handled as directed by the OWNER.

03/02/2015 02372 Environmental Protection – Page 3 of 4

3.02 PROTECTION OF WATER RESOURCES

A. Keep construction activities under surveillance, management, and control to avoid pollution of surface and ground waters. Special management techniques as set out herein shall be implemented to control water pollution.

B. Washing and Curing Water:

1. Wastewaters directly derived from construction activities shall not be allowed to enter water areas.

2. These wastewaters shall be collected and placed in retention ponds where suspended materials can be settled out or the water evaporates so that pollutants are…