A04_Specifications_Replace_Septic_System_at_LPK_Comfort_Station_168.pdf

EVERGLADES NATIONAL PARK

REPLACE LONG PINE KEY COMFORT STATION 168 SEPTIC

SYSTEM

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE

EVERGLADES NATIONAL PARK

TABLE OF CONTENTS

REPLACE SEPTIC TANK AND DRAINFIELD AT LONG PINE KEY PICNIC AREA

TABLE OF CONTENTS

01 10 00 ....................................... SUMMARY OF WORK

31 20 00 ....................................... EARTHWORK

33 36 00 ....................................... SEPTIC SYSTEM DRAIN FIELD

01 10 00-1

SUMMARY OF WORK

SECTION 01 10 00

SUMMARY OF WORK

PART 1 - GENERAL

1.1 SUMMARY

A. This work consists of providing all labor, materials, and equipment to replace approximately 60 feet of 4-inch sanitary sewer pipe and install a new cleanout, removal of existing concrete septic tank, installation of new septic tank, removal of existing septic drain field, installation of new septic drain field, and restoration of the site.

B. The work is shown on the attached drawing set number 160/170086.

C. The work is at the Long Pine Key Day Use Area in Everglades National Park.

D. The work will be constructed under a single contract.

1.2 DEFINITION OF BID ITEMS

A. Line Item 010, Base Bid: This item consists of all work at Long Pine Key Comfort Station as shown on the drawings and all work not specifically included in a bid option.

1.3 USE OF PREMISES AND WORK RESTRICTIONS

A. The Long Pine Key Day Use Area will be open to the public year round. During construction, the comfort station associated with this work will be closed to visitors.

B. On-Site Work Hours: Work shall be generally performed during normal business working hours of 8:00 a.m. to 5:00 p.m., Monday through Friday, except when otherwise indicated. Requests for any work outside those hours, including weekends and holidays, must be submitted for approval at least 48 hours in advance.

C. Use of Site: Limit use of the premises to previously disturbed areas as shown on the drawings. Do not disturb portions of the site beyond the work area. The project limits will also be stacked out prior to the Pre-Bid site visit to facilitate planning for the project.

1. Preservation of Natural Features: This project is adjacent to known USFWS Critical Habitats.

Prevent damage to natural surroundings. Report and restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

2. Preservation of Cultural Resources: No known archeological resources are in the area of this construction. If previously unknown archeological resources are discovered during the work of this project, the Contractor will immediately stop work in the area of discovery and notify the Contracting Officer (CO)and Contracting Officer’s Representative (COR). An equitable adjustment will be made in accordance with the Changes clause of the contract.

3. Runoff: Install silt fence downhill from all earth disturbing activities.

D. Protection of Public: Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry.

01 10 00-2

E. Existing Utilities

1. Existing Utilities: Notify COR and utility companies of proposed locations and times for excavation.

2. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

3. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be made in accordance with the Changes clause of the contract.

4. No interruption of utilities should be required for this work.

F. Hurricanes: The government requires closing of operations between 100 and 48 hours of anticipated landfall of a tropical storm or hurricane as determined by the National Park Service. All project materials will be adequately secured or removed from the site within that time frame.

1.4 PRECONSTRUCTION CONFERENCE:

A. Before start of construction, the Contracting Officer (CO) will arrange an on-site meeting with the Contractor. The meeting agenda will include the following as a minimum: correspondence procedures, designation of responsible personnel, payments to the Contractor, park rules and regulations, construction schedule, shop drawings, and project closeout requirements.

1.5 PERIOD OF PERFORMANCE

A. The contractor shall have 60 working days to complete all work awarded under the base items, from the notice to proceed. A working day shall be considered every day that does not fall on a federal holiday, Saturday, or Sunday. In the case of rain, wet soil, or other weather-related delays, time may be extended. The Contractor may provide documentation as to which days within their Period of Performance time should not be charged due to weather to the COR for Review and Approval.

1.6 SUBMITTALS

A. Pre-Construction Submittals:

1. Submit a Progress Schedule (normally in Gantt Chart form) showing estimated starting and completion dates for each part of the work.

2. Submit a Schedule of Values showing the detailed breakdown of the Contract amount into appropriate units of work. Include general condition costs, overhead, and profit in each part of the work and not as separate items. The Schedule of Values will form the basis for progress payments as provided for in the General Provisions.

3. Submit a safety plan per the accident prevention paragraph on next page.

01 10 00-3

C. Post Construction Submittals:

1. Manufacturers' Operations And Maintenance Data

a. Provide all available data, including installation and operating instructions, parts lists, electrical and mechanical schematics, control circuit documentation, performance data, safety instructions, and instructions for maintenance, including lubrication, disassembly and repair, cleaning, and service.

b. Provide two papers copies of the data in three ring binders, or if available, provide one paper copy and one electronic copy in pdf format.

2. Project Record Drawings

a. Maintain one complete set of contract drawings. Clearly mark changes, deletions, and additions to show actual construction conditions. Show additions in red, deletions in green, and special instructions in blue.

1.7 ACCIDENT PREVENTION

A. Before on-site work begins, submit a written accident prevention program containing the following:

1. Name of responsible supervisor to carry out the program.

2. Site specific information including emergency response contact information and location of the nearest emergency room.

3. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to ensure property protection and safety of the public, National Park Service personnel, and Contractor's employees.

B. The Contractor shall follow all federal, state, and local safety and health requirements.

C. The Contractor shall report all accidents to the Contracting Officer and Contracting Officer’s Representative, as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.

1.8 CONSTRUCTION MATERIALS:

A. All materials, including borrow and aggregates, shall be Contractor furnished from outside the park.

1.9 DISPOSAL

A. All removed material including, soil and rock, becomes the property of the Contractor and shall be disposed of outside the park.

1.10 FIELD VERIFICATION:

A. Field verify all new and existing dimensions affecting the work of this contract before ordering products. Any discrepancies between construction drawings, construction specifications, and field conditions shall be brought to the attention of the Contracting Officer before work is to be performed. Any work that is performed without notifying the Contracting Officer will be done at the contractor's own expense.

01 10 00-4

PART 2 - PRODUCTS

2.1 FIRST AID FACILITIES

A. Provide adequate facilities for the number of employees and the type of construction at the site.

2.2 PERSONNEL PROTECTIVE EQUIPMENT

A. Meet requirements of NIOSH and MSHA, where applicable, as well as ANSI.

2.3 SANITARY FACILITIES

A. Sufficiently lighted and ventilated toilet facilities in weatherproof, sight proof, sturdy enclosures.

The Contractor shall not use the restroom facilities provided for the public. Place in approved locations secluded from public observation and convenient to workstations.

PART 3 - EXECUTION

3.1 SUBSTANTIAL COMPLETION AND FINAL INSPECTION

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish.

At time of final inspection, project shall be thoroughly clean and ready for use.

B. Submit written certification that project, or designated portion of project, is substantially complete, and request in writing a final inspection. Contracting Officer will make an inspection within 10 days of receipt of request.

C. If the project is determined to be substantially complete, the Contracting Officer will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion.

D. After all deficiencies have been corrected, a Letter of Acceptance will be issued.

31 20 00 - 1

EARTHWORK

SECTION 31 20 00

EARTHWORK

PART 1 - GENERAL

1.1 DESCRIPTION

A. The work of this section consists of excavating and backfilling for structures and utility trenching.

All trenching will be open cut.

1.2 DEFINITION

A. Materials used in backfill, as shown in trench details, are defined as follows:

1. Bedding and Select Backfill: When rock, unstable material, or wet trench is encountered at the excavated grade for utility installation, bedding is required. Materials shall be predominantly sand and gravel, having a plasticity index less than 6. Bedding may be omitted if, in the opinion of the Contracting Officer, the excavated trench bottom will adequately support and not damage the utility line.

a. Gradation as follows:

Sieve Size Percent Passing 1/2-inch 100

No. 4 50- 80 No. 40 10- 25

2. Trench Backfill:

a. Soils that contain no rock larger than 6 inches at greatest dimension. If expansive clays are present, such content shall not exceed one-third of the material by volume, and shall be well mixed with non-cohesive soils.

3. Structural Backfill

a. Fine, readily compactible soil or granular material, free from frozen lumps, stones larger than 2 inches, highly plastic clay, and organic or other objectionable material. Excavated material meeting this requirement may be used with approval.

B. All references to percent of maximum density will be as determined by ASTM D698 (Standard Proctor Test).

1.3 PROJECT CONDITIONS

A. Arrange construction sequences to provide the shortest practical time that excavations will be open to avoid hazard to the public, and to minimize the possibility of trench collapse.

B. The area to be excavated consists of hard coral limestone.

C. Prior to carrying out work, the boundary between previously disturbed and undisturbed soils and vegetation will be marked. Operation of equipment will be restricted to areas with previously disturbed soils and vegetation above existing tank, line and drain field. Vegetation trimming will be minimized and only carried out to the extent necessary to replace septic system components.

Following repairs, area will be allowed to revegetate naturally. Sod will not be used for revegetation.

31 20 00 - 2

1.4 EXCAVATION CLASSIFICATION

A. Regardless of the nature of material excavated, all excavation will be considered unclassified.

PART 2 - PRODUCTS

2.1 GENERAL

A. All backfill material shall be approved before use and be free of cinders, ashes, ice, frozen soil, large hard clods, organic debris, or other deleterious items. Excavation materials may be reused as backfill as approved.

2.2 UTILITY MARKING TAPE

A. Capable of being inductively detected electronically.

B. Construction: Metallic foil laminated between two layers of impervious plastic film not less than 3 inches wide. Total thickness of tape shall not be less than 5 mil plus or minus 10 percent manufacturing tolerances.

1. Film: Inert plastic. Each film layer shall be not less than 0.5 mil thick.

2. Foil: Not less than 0.35 mil thick.

3. Adhesive: Compatible with foil and film.

C. Imprint: 3/4 inch or larger bold black letters.

D. Legend: Identify buried utility line tape with imprint such as "Caution: Sewer Line Below". Repeat identification at approximately 24 inch intervals.

E. Background Color: APWA color code and as specified below:

Color Utility Green Wastewater

F. Manufacturer: Pro-Line Safety Products Company, West Chicago, IL; Terra Tape manufactured by Reef Industries, Inc., Houston, TX; or approved equal.

PART 3 - EXECUTION

3.1 SHORING AND SHEETING

A. Construct and maintain all shoring, sheeting, and slope lay-back necessary to protect the excavation, as needed for the safety of the employees and as required by applicable State and Federal laws.

B. For excavations over 5 feet deep, provide suitable barricades for worker protection. When work area is left open and unattended by Contractor, provide suitable barricades for public safety, regardless of trench depth.

C. For excavations over 4 feet deep, provide suitable exit means in accordance with applicable provisions of OSHA.

31 20 00 - 3

D. Do not remove timber or sheeting if it is in a compacted zone. Instead, trim it off at a safe level above that zone.

E. As directed, remove all other sheeting and shoring when safe to do so.

3.2 TRENCH EXCAVATION

A. Trenching Guidelines: Excavate the trench to the approximate level of the top of the utility line to be installed, using adequate trench width and side slopes to safely accommodate worker access.

Continue excavating for the utility line, to a width not greater than is shown on the appropriate trench detail.

1. Rocky Trench Bottom: Where ledge rock, hard pan, boulders, or sharp-edged materials are encountered, over-excavate a minimum depth of 6 inches below the bottom of the utility exterior wall to permit adequate bedding preparation. The installed utility shall have at least 6 inches of clearance from any rock protrusion. Blasting shall be as specified in Section 02305.

2. Unstable Trench Bottom: Secure approval of depth of over-excavation and stabilization method.

For wet trench construction, use approved method of dewatering through diversion, damming and pumping, well points, or underdrain systems. Dispose of removed fluidized materials as approved. Use BD-3 material to build a suitable foundation to within 6 inches of finished utility grade, prior to bedding with the specified material. Compact layers to 95 percent of maximum density in not greater than 6-inch layers. Do not proceed with utility installation until wet trench and unstable conditions are under control.

B. Paved Areas: Cut existing pavement full depth to a true line before excavation, as shown, and maintain the edge suitable for repaving. Pavement removed shall not be used as backfill.

3.3 TRENCH BACKFILLING

A. Compaction: Use vibratory compactors for sands and gravels (non-cohesive soils). Use mechanical tampers for sand and gravel containing a significant portion of fine-grained material, such as silt and clay (cohesive soils). Hand tamp around pipe or cable to protect the lines until adequate cushion is attained. Puddling or water flooding for consolidation of backfill or compaction by wheel rolling with construction equipment will not be permitted.

B. Bedding: Compact the specified material to 95 percent of maximum density to the finished utility grade.

C. Utility Installation: Shape the trench bottom to ensure uniform contact with the full length of the installed line and remove any sharp-edged materials that might damage the line. Compaction shall be maintained beneath the line.

D. Select Backfill: Fill by hand placement around the utility to just over half depth, and compact in a manner to ensure against lateral or vertical displacement. Place select backfill to 12 inches above the utility line by hand placement in not more than 6-inch layers. Compact each layer to 95 percent of maximum density.

E. Backfill: Place and compact the specified material as follows:

1. Vehicular Traffic Areas: Fill and compact in 8-inch maximum layers to 95 percent of maximum density.

2. Non-traffic Areas: Fill and compact in 8-inch maximum layers to 90 percent of maximum density.

31 20 00 - 4

3.4 UTILITY MARKING TAPE

A. Install tape in backfill directly over each buried utility line as shown. Place tape by plowing or during final backfilling.

B. Where utilities are buried in a common trench, identify each line by a separate warning tape. Bury tapes side by side directly over the applicable line.

3.5 STRUCTURAL EXCAVATION AND BACKFILL

A. If the Contracting Officer approves excavation below the design elevation because of unsuitable foundation material, an equitable adjustment will be made. If unauthorized over-excavation occurs, repair the area by backfilling with approved material and compacting to 95 percent of the maximum density at no additional expense to the Government.

B. Upon completion of excavation and before placing forms or structures, notify the Contracting Officer who will inspect the excavation and may take tests to determine soil bearing values.

C. Use suitable material removed from excavation before importing backfill.

D. If the foundation is unstable at grade established, remove unsuitable material and replace with structural backfill in 6 inch layers. Compact each layer to 90 percent of maximum density.

E. Place structural backfill material in maximum 6 inch layers. Thoroughly compact each layer to 95 percent of the maximum density with mechanical tampers. Do not place backfill against newly constructed masonry or concrete structures for 14 days unless authorized by the Contracting Officer.

3.6 SURFACE FINISH WORK

A. Open and Grass Areas: Grade all disturbed areas to a finish ordinarily obtained from a blade grader, with no abrupt changes in grade or irregularities that will hold water.

B. Clean-Up: Prior to final inspection and acceptance, remove all rubbish and excess material for disposal as approved, and leave area in a neat, satisfactory condition.

3.7 DISPOSAL

A. Dispose of surplus and unsuitable material as specified in Section 01 10 00.

33 36 00 - 1

SEPTIC SYSTEM DRAIN FIELD

SECTION 33 36 00

SEPTIC SYSTEM

PART 1 - GENERAL

1.1 DESCRIPTION

A. The work of this section consists of installing a septic system to replace existing failing septic system. The new septic system is in the same location as the previous system.

1.2 SUBMITTALS

A. As specified in Section 01 10 00.

B. Submit manufacturer’s literature for the septic tank, drain field chambers, piping, geotextile fabric, sand, and fill (if required).

1.3 PROJECT CONDITIONS

A. Restrict the use of the disposal field area to activities which do not contribute to the compaction of the soil. Give attention to the protection of the natural absorption properties of the soil. Take care to prevent sealing of the surfaces on the bottom and sides of the absorption trenches. Do not excavate trenches when the soil is wet enough to smear or compact easily. Work only when the soil moisture is right for safe working, when a handful of soil will mold with considerable pressure.

PART 2 - PRODUCTS

2.1 SEPTIC TANK

A. Infiltrator IM-1060 – 1,060 gallons water volume, two compartments, or approved equal. Approved by the Florida Department of Health.

2.2 SEPTIC DRAIN FIELD CHAMBERS

A. Infiltrator Quick 4, Equalizer 36, or approved equal. Approved by the Florida Department of Health as an alternative drain field product. Infiltration area equal to 12 sf per 4-foot long chamber.

2.3 SAND

A. Silica sand with a slightly limited percolation rate (less than 2 minutes/inch).

33 36 00 - 2

SEPTIC SYSTEM DRAIN FIELD

2.4 GEOTEXTILE FABRIC

A. Fabric: Use a geotextile fabric made from woven or nonwoven fabric, meeting the following physical requirements:

Minimum grab tensile strength 60 pounds Minimum Trapezoidal Tear strength 25 pounds Minimum permittivity 1.0 sec-1

2.5 PLASTIC PIPE, JOINTS, AND FITTINGS

A. ASTM D1784, polyvinyl chloride (PVC). Minimum wall thickness, SDR 35PVC, ASTM D3034-83, SDR 35. Fittings size, grade, joint type, and lining to match pipe, and as recommended by the pipe manufacturer.

B. Elastomeric Gasket Joint: Manufacturer's standard. Integrally formed bell, push-fit, rubber gasketed joint system.

PART 3 - EXECUTION

3.1 TRENCH EXCAVATION

A. Section 31 20 00.

B. Dispose of existing septic tank and drain field chambers.

C. Excavate trenches to line and grade shown. Trench bottom shall be maintained at a level grade no greater than 2 inches in 100'. If trench side walls or bottom appear smeared as a result of the trenching operation, the smeared surface shall be loosened with a rake or shovel to a depth of 1 inch and loose material removed. Do not operate equipment on the exposed trench bottom.

3.2 PLACEMENT OF SAND AND CHAMBERS

A. Install Sand in trench to a level grade. Assemble and install chambers according the manufacturer’s instructions. Fill side wall area with sand to the top of the chamber slots. Lightly compact by walking across the soil.

3.3 EARTH BACKFILLING OF CHAMBERS

A. Continue to fill over chambers with earth that is free of rocks larger than 1 1/2 inches in greatest dimension, detrimental quantities of organic material, debris, muck, and other unsuitable material.

The fill shall be placed with a light amount of compaction.

3.4 SURFACE FINISH

A. Sections 31 20 00.