4. Eagle Lake DO Sewage Pond Relining Project Specifications.pdf

ESTIMATED BY DATE

T.STEWART 6/2/2025

CHECKED BY DATE

Construction Specifications United States Department of Agriculture

Forest Service

Pacific Southwest Region (R5)

Lassen National Forest

Eagle Lake District Office Sewage Treatment Pond Relining g Construction c Service c Supply

USDA Forest Service Project Specifications

2 June 2025 Sewage Treatment Pond Relining 1

SECTION 00 00 00

TABLE OF CONTENTS

DIVISION 01 – GENERAL REQUIREMENTS

Section 01 10 00 Summary 3 Pages

Section 01 22 13 Unit Price Measurement 1 Pages

Section 01 33 00 Submittal Procedures 1 Page

Section 01 41 00 Regulatory Requirements 1 Page

Section 01 71 13 Mobilization 1 Page

Section 01 74 00 Cleaning and Waste Management 1 Page

DIVISION 31 – EARTHWORK

Section 31 20 00 Earth Moving 2 Pages

DIVISION 33 – UTILITIES

Section 33 38 00 Lagoon Pond Liner 4 Pages

END OF SECTION 00 00 00

00 00 00

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SECTION 01 10 00

SUMMARY

PART 1 - GENERAL

1.01 SUMMARY

A. Section Includes:

1. Project information.

2. Work covered by Contract Documents.

3. Contractor's use of site and premises.

4. Coordination with occupants.

5. Work restrictions.

6. Specification and Drawing conventions.

1.02 PROJECT INFORMATION

A. Project Identification: Eagle Lake District Office Sewage Treatment Pond Relining

B. Project Location: 477-050 Eagle Lake Road, Susanville, CA 96130

C. Project Background: The Eagle Lake District Office has two sewage treatment lagoons that serve the office buildings and compound, comprised of a larger evaporation pond, and a smaller primary pond. The liners of these were last replaced somewhere between 2008 and

2010. During the last replacement, the existing liner had been patched where holes had formed, and a new liner was laid on top of the existing liner. Over the past several years, the upper layer of liner had begun to deteriorate rapidly, and in several areas the lower, original layer had become visible. In May 2025, a windstorm tore liners of both layers of the evapo-ration pond, exposing native soil beneath. The primary pond was also torn and has areas of native material exposed as well because of the weather event. This contract is for the repair and replacement of the liners to make the sewage ponds operational again.

1.03 WORK COVERED BY CONTRACT DOCUMENTS

A. This work shall consist of furnishing and installing liners in both the primary and evaporation ponds at the Eagle Lake District Office. All labor, equipment, tools, and incidentals neces-sary for the complete installation of the pond liner shall be included. This work includes, but is not limited to the following:

1. Removal of both layers of the sewage pond liner on the evaporation pond

2. Patching the liner of the primary pond prior to relining

3. Site work in preparation for relining both ponds

4. Installation of geofabric on the native surface of the evaporation pond

5. Installation of liner and accessories shown on the DRAWINGS for both sewage treat-ment ponds.

6. Construction of the anchor trench on all sides of both ponds

7. Removal and reinstallation of aerators

8. Removal of all material from the existing liner and disposing of materials off Forest

Service lands. This includes sludge, rocks, cattails, etc.

9. Reinstallation of anchor posts

10. Incidental work items necessary for the facilitation of the liner replacements

B. Reference all contract documents for all other Work to be completed as a part of this contract.

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1.04 CONTRACTOR'S USE OF SITE AND PREMISES

A. Use of Site: Limit use of Project site to Work in areas within the Contract limits indicated.

Do not disturb portions of Project site beyond areas in which the Work is indicated.

1. Driveways, Walkways, and Entrances: Keep driveways and entrances serving prem-ises clear and available to Government, Government's employees, and emergency ve-hicles at all times. Do not use these areas for parking or for storage of materials.

B. Condition of Existing Grounds: Maintain portions of existing grounds, landscaping, and hardscaping affected by construction operations throughout construction period. Repair damage caused by construction operations.

1.05 COORDINATION WITH OCCUPANTS

A. Full Government Occupancy: Government will occupy site and existing adjacent buildings during entire construction period. Cooperate with Government during construction opera-tions to minimize conflicts and facilitate Government and public usage. Perform the Work so as not to interfere with Government day-to-day operations. Maintain existing exits, unless otherwise indicated.

B. One pond shall always be in service.

1.06 WORK RESTRICTIONS

A. Work Restrictions, General: Comply with restrictions on construction operations.

1. Comply with limitations on use of public streets and with other requirements of au-thorities having jurisdiction.

B. On-Site Work Hours: Limit work in the existing building to normal business working hours of 7:30 a.m. to 5:00 p.m., Monday through Friday, unless otherwise indicated.

C. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Gov-ernment or others unless permitted under the following conditions and then only after provid-ing temporary utility services according to requirements indicated:

1. Notify Government not less than three days in advance of proposed utility interrup-tions.

2. Obtain Government's written permission before proceeding with utility interruptions.

1.07 SPECIFICATION AND DRAWING CONVENTIONS

A. Specification Content: The Specifications use certain conventions for the style of language and the intended meaning of certain terms, words, and phrases when used in particular situ-ations. These conventions are as follows:

1. Imperative mood and streamlined language are generally used in the Specifications.

The words "shall," "shall be," or "shall comply with," depending on the context, are implied where a colon (:) is used within a sentence or phrase.

2. Specification requirements are to be performed by Contractor unless specifically stated otherwise.

B. Division 01 General Requirements: Requirements of Sections in Division 01 apply to the

Work of all Sections in the Specifications.

C. Drawing Coordination: Requirements for materials and products identified on Drawings are described in detail in the Specifications.

D. Terminology: Materials and products are identified by the typical generic terms used in the individual Specifications Sections.

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E. Abbreviations: Materials and products are identified by abbreviations published as part of the U.S. National CAD Standard and scheduled on Drawings.

F. Keynoting: Materials and products are identified by reference keynotes referencing Speci-fication Section numbers found in this Project Manual.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

END OF SECTION 01 10 00

01 10 00

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SECTION 01 22 13

UNIT PRICE MEASUREMENT

PART 1 - GENERAL

1.01 SCOPE

A. This section defines the terms associated with the method of measurement for determining final payment under the terms of the contract.

B. Measurement and payment for contract work will be made only for and under those pay items included in the SCHEDULE OF ITEMS. All other work and materials will be consid-ered incidental to and included in the payment of the items listed in the SCHEDULE OF

ITEMS.

1.02 MEASUREMENT AND PAYMENT

A. No separate measurement or payment will be made for the work specified in this section.

1.03 DETERMINATION OF QUANTITIES

A. Lump Sum Quantities (LS) – These quantities denote one complete unit of work as required by or described in the Contract, including necessary materials, equipment, and labor to com-plete the job.

B. Linear Foot (LF) – This shall be one foot, rounded to the nearest one unit, as measured along the centerline of the completed work.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

END OF SECTION 01 22 13

01 22 13

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SECTION 01 33 00

SUBMITTAL PROCEDURES

PART 1 - GENERAL

1.01 SCOPE

A. The work in this section consists of furnishing samples, shop drawings, and the submittal of technical information, including requests for substitutions. It describes the review time for submittals, shop drawings, and substitutions.

1.02 MEASUREMENT AND PAYMENT

A. No separate measurement or payment will be made for the work specified in this section.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.01 SUBMITTALS

A. The Contractor shall submit the following to the Contracting Officer for approval within 15 days of awarding the contract. Allow 10 calendar days for review.

1. Manufacturer's literature for liner material.

2. Manufacturer’s instructions for installation. Submit one copy to the Government at least 5 days prior to installation of liner

3. Membrane manufacturer’s material warranty

4. Contractor shall submit a work schedule and resources to complete work.

5. A written manufacturer’s pro-rated weathering warranty for at least 20 years shall be provided.

6. A two-year construction warranty shall be provided.

3.02 SUBSTITUTIONS

A. Any substitution of material must be requested in writing. The material must be equal to and approved by the Contracting Officer. Approval of satisfactory substitutions shall be made after contract has been awarded. Allow 10 calendar days from receipt of the submittal.

END OF SECTION 01 33 00

01 33 00

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SECTION 01 41 00

REGULATORY REQUIREMENTS

PART 1 - GENERAL

1.01 CODES AND STANDARDS

A. The Contractor shall comply with all Contract Specifications and any codes and standards, federal, state or local, in effect on the date bids are received. The most stringent specification shall govern when a conflict occurs.

B. Obtaining Specifications. Standards and/or codes published by associations or other stand-ardizing agencies shall be obtained directly from those agencies.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

END OF SECTION 01 41 00

01 41 00

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SECTION 01 71 13

MOBILIZATION

PART 1 - GENERAL

A. This section pertains to mobilization of personnel, equipment, material, and incidentals to the project and performs all activities necessary to accomplish the work at the project site, including the obtaining of all required permits, insurance, and bonds.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

END OF SECTION 01 71 13

01 71 13

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SECTION 01 74 00

CLEANING AND WASTE MANAGEMENT

PART 1 - GENERAL

1.01 SCOPE

A. This work consists of the cleanup required in areas affected by the construction and the dis-posal of refuse and excess material resulting from construction operations.

1.02 MEASUREMENT

A. No separate measurements or payment will be made for work specified in this section

1.03 QUALITY ASSURANCE

A. Regulatory Requirements: Comply with hauling and disposal regulations of authorities hav-ing jurisdiction

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.01 GENERAL

A. The contractor shall keep the premises clean and orderly. At the completion of the work the contractor shall remove all materials and equipment and shall leave the site clean.

3.02 EXCESS MATERIAL AND REFUSE

A. General: Remove waste materials from Government lands and legally dispose of them in a landfill

1. Except as otherwise specified, do not allow waste materials that are to be disposed of accumulate on-site

2. Contractor shall supply all garbage containers, dumpsters, etc. as required to contain refuse generated from the construction operations.

3. Remove and transport debris in a manner that will prevent spillage on adjacent sur-faces and areas.

B. Burning: Do not burn waste material

END OF SECTION 01 74 00

01 74 00

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SECTION 31 20 00

EARTH MOVING

PART 1 - GENERAL

1.01 SCOPE

A. This work consists of trench excavation, backfilling, and compaction for anchoring the liner at the top of the dike.

1.02 MEASUREMENT

A. Measurement of trenching shall be made to the nearest linear foot of trench shown in the

Schedule of Items.

B. Payment will constitute full compensation for furnishing all labor, materials, and equipment necessary to complete the work in accordance with the drawings and specifications, includ-ing but not limited to trenching and compaction.

PART 2 - PRODUCTS

2.01 SOIL MATERIAL

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations

B. Satisfactory Soils: Native material free of rock or gravel larger than 1-inch in any dimension, debris, waste, frozen materials, vegetation, and other deleterious materials.

C. Unsatisfactory Soils: Soil not meeting the classifications of satisfactory soil.

PART 3 - EXECUTION

3.01 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth-moving operations.

3.02 GENERAL

A. Trenching shall be performed to the lines, grades, and dimensions SHOWN ON THE

DRAWINGS to provide the minimum required cover. Excavation shall be considered un-classified regardless of material encountered. No adjustment in price will be made for the disposal of rock.

3.03 EXISTING UTILITIES

A. Prior to beginning trenching, Contractor shall locate all existing underground utilities inter-secting or parallel to the trench. Existing utilities shall be located by means of an electronic pipe and cable locator and the location identified by spray painting the ground surface.

3.04 RESPONSIBILITY FOR UTILITIES

A. Any existing underground utilities that are damaged because of the Contractor’s operations shall be repaired or replaced at no additional cost to the Government.

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3.05 EXCAVATED MATERIALS

A. Trench excavation shall be placed in a neat pile adjacent to the trench a sufficient distance to prevent cave-ins. Excess excavation or excavation not suitable for backfill shall be placed in designated areas approved by the Contracting Officer. Unsuitable excavation shall be dis-posed of in designated locations.

3.06 BACKFILL

A. Native material may be used as backfill as SHOWN ON THE DRAWINGS provided it con-tains no rocks larger than 3 inches in greatest dimension.

3.07 COMPACTION

A. Backfill shall be placed in 12" lifts and "wheel rolled" and mounded as shown on the draw-ings.

3.08 SAFETY

A. This project is located inside of a fenced and gated area. The gate shall be closed and locked at the end of each day.

3.09 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion.

Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

1. Restore appearance, quality, and condition of finished surfacing to match

3.10 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus satisfactory soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Government's property

END OF SECTION 31 20 00

31 20 00

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SECTION 33 38 00

LAGOON POND LINER

PART 1 - GENERAL

1.01 SCOPE

A. The work shall include installation of pond liners and accessories in ponds as shown on the drawings. All labor, equipment, materials, tools, and incidentals necessary for the complete installation of the pond liners shall conform to the manufacturer’s recommended installation procedure. The work shall include but is not limited to preparing the ponds for liner instal-lation including repair of the evaporation pond, removal of sludge and other material from pond, and anchoring the liner at the top of each dike as shown by the drawings. Care shall be taken to protect the existing primary pond liner.

PART 2 - PRODUCTS

2.01 POND LINER

A. Liner Membrane shall be Reinforced Polypropylene (RPP), having a minimum 20-year man-ufacturer’s warranty.

B. The liner shall be black in color, minimum of 45 mils thick.

C. Liner shall have the following minimum physical properties:

Physical Property Test Method Property Gauge, Normal (mils) ASTM D 751 45 mil.

Tolerance on nominal Thickness ASTM D 751 ±10%

Thickness over scrim ASTM D 4637 Optical Method 0.013 in.

Mass per unit area ASTM D5261 0.21 lb./ft2 typical

Breaking Strength ASTM D 751 Grab Method 250 lb. min

Elongation at break of fabric ASTM D 751 25% typical

Tearing Strength ASTM D 5884 Tongue Tear 100 lb. min

Low temperature flexibility ASTM D 2136 -40°F max

Linear Dimensional Change (shrinkage) ASTM D 1204 ±1%

Ozone Resistance, 100 pphm 168 hours ASTM D 1149 No Cracks

Resistance to water (distilled) absorption af-ter 30 days immersion

122°F (50°C) Change in mass

ASTM D 471

1.0% max

0.5% typical

Hydrostatic Resistance (Mullen Burst)

ASTM D 751

350 psi min.

450 psi typical

Field seam strength Seam tested in peel after weld ASTM D 1876 30 lb./in min.

Water vapor permeance ASTM E 96

0.10 perms max.

0.05 perms typical

Puncture resistance ASTM D 4833 85 lb. min.

110 lb. Typical

Resistance to xenon-arc weathering2

Xenon-Arc, 10, 080 kJ/m2 total radiant expo-sure, visual condition at 10X

ASTM G 155

No Cracks

No loss of breaking or tearing strength

2.02 GEOTEXTILE UNDERLAY

A. Geotextile underlay material shall be compatible with and conform to pond liner manufac-turer’s recommendations

B. Geotextile underlay shall have the following minimum physical properties:

Physical Property Test Method Property Punction Resistance ASTM D 6241 300 lbf

Hydrostatic Resistance (Mullen Burst) ASTM D 3786 210 psi

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PART 3 - EXECUTION

3.01 SEQUENCE OF EVENTS

A. The evaporation pond (larger) shall be lined first. Both pond liners of the evaporation pond shall be removed and the native surface prepared according to applicable rules and regula-tions, and the manufacturer’s written instructions. A Geofabric membrane shall be placed on the prepared native surface according to the membrane’s manufactures written instructions.

The new liner shall be placed on the geofabric material.

B. After the evaporation pond is complete, the Forest Service shall put the evaporation pond

“On Service” and if funding is available, work may begin on the primary pond. The aerator shall be removed, and the existing liquid shall be pumped into the evaporation pond by the

Contractor. All vegetative material shall be removed from the primary pond by the Contrac-tor and removed from Forest Service lands.

C. The outer layer of the liner of the secondary pond shall be removed, and the secondary layer shall be patched to be watertight, according to applicable rules and regulations. The new liner shall be placed on the patched liner.

3.02 SLUDGE REMOVAL

A. The sludge from the primary pond may be pumped into the evaporation pond after the evaporation has been relined. There is no sludge currently in the evaporation pond.

3.03 PREPARATION OF LINING BEDDING

A. The surface on which the lining is to be placed shall be firm, clean, dry, and smooth. The area to be lined shall be free of rock, brush, dirt, roots, and other vegetative material.

3.04 TRENCHING

A. All trenching necessary to anchor the lining, AS SHOWN ON THE DRAWINGS, shall be completed prior to installation of the lining. All suitable material shall be saved and used as backfill material. Backfilling and compaction shall be done in accordance with Section

312000 “Earth Moving”.

3.05 WARRANTY

A. A written manufacturer’s pro-rated weathering warranty for 20 years shall be provided.

B. A two-year construction warranty shall be provided.

3.06 STORAGE OF MATERIALS

A. Materials shall be stored in the original unopened containers, in a dry area, and protected from direct heat of the sun where possible. Containers shall not be stacked.

3.07 SUBSTITUTIONS

A. Any substitutions in lining material shall be approved in writing by the Contracting Officer prior to installation.

3.08 LINING INSTALLATION

A. The Contractor shall comply with all installation procedures recommended by the manufac-turer.

B. The liner installer shall be experienced in the installation of flexible membrane linings and shall be approved in writing by the manufacturer of the lining.

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C. Installation of the liner shall be performed in a logical sequence. Only those sheets of lining material which can be anchored and / or sealed together in one day shall be unpackaged and placed in position. Place panels according to the manufacturer’s panel layout and the label on each panel.

D. Sufficient thermal slack shall be incorporated during placement to ensure that harmful stresses do not occur in service.

E. Weather conditions at time of installation.

1. Site welding may proceed at any temperature providing a suitable qualification weld can be prepared at site conditions using the operator, equipment, and materials intended for the project.

2. Installation of membrane in winds above 12mph can proceed only if the installer can demonstrate that the liner will not be at risk of damage.

3. Do not install membrane during precipitation or in the presence of excessive moisture.

4. Do not install in weather conditions that may be detrimental to the function of the membrane.

F. Personnel working on geomembrane shall not wear footwear that could damage the mem-brane.

G. Equipment and methods used to unroll liner panels shall not damage the prepared subgrade or panels.

H. Ballast used to prevent uplift by wind must not damage the geomembrane.

I. Liner shall be held in place at aerator locations (three locations in evaporation pond and two in primary pond) using stainless steel plates and bolts. The existing hardware may be used if in good condition.

J. Qualification seams.

1. A qualification seam will be run prior to any field seams.

2. A qualification seam shall be made with separate pieces of geomembrane using the same material and equipment that will be used for production welding.

3. Machine conditions and operator used for welding must be the same as those used for the qualification weld.

4. Qualification seam must be tested in shear and peel and meet the specified require-ments for the material as stated in the materials section.

5. A qualification seam must be rerun whenever the operator is changed, the equipment is adjusted, or at least every 4 hours.

K. Field seams will be sampled for testing in a way that does not compromise the installed liner.

1. One sample to be tested for every 500 ft of field seam.

2. Test samples are to be removed from the ends of seams, from the anchor trench, or other location that does not introduce a defect into the liner.

3. Samples to be approximately 4 inches long to permit testing of one shear and two peel specimens (ASTM D6392).

4. Test samples immediately after seaming.

5. Record date, location, and pass/fail description.

6. Field seams must meet the specified requirements in peel and shear for the material.

7. A written record will be maintained for all field seam tests.

8. All completed field seams shall be 100% non-destructively tested using an air lance test (ASTM D4437 method 7.2).

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3.09 TOLERANCES

A. Seam tests.

1. Follow the procedure in ASTM D6392.

2. Test three specimens per sampling point, one in shear and two in peel. All specimens to meet seam strength requirements.

3. Procedure for Destructive Test Failure:

a. Cut out seam and re-weld or

b. Retrace welding path to 10 feet from location of failed test. Take sample for additional test. If passed – cap strip or extrusion weld between failed location and original failed location.

3.10 REPAIR

A. Inspect seams and non-seam areas for defects, holes, blisters, and undispersed raw materials.

B. Identify any sign of foreign matter contamination.

C. Repair all through-thickness defects.

D. Defective seams shall be replaced or cap stripped.

E. Small holes shall be repaired by extrusion welding using a bead of extruded material over hole. Patch if hole is larger than ¼ inch.

F. Tears – Patch and seal round sharp ends of tears on slope or stressed area prior to patching.

G. Repair blisters, large cuts, and undispersed raw materials with a patch.

H. Secure patches by extrusion welding or hot air welding as follows:

1. Extrusion welding –

a. Clean area to be patched.

b. Tack patch in place with hot air welding or with double side tape.

c. Prepare patch area by roughening with a wire brush.

d. Extrude all the way around patch.

2. Hot air welding –

a. Hand hot air welding is permitted for patching.

b. Clean area to be patched.

c. Hand weld the patch with a hot air gun and suitable roller.

I. Patches either round or oval shall be made of the same geomembrane. Patches shall extend a minimum of 3 inches beyond the edge of the defect.

J. Verification of repairs shall be done by non-destructive testing using either an Air Lance

Test (ASTM D4437 Method 7.2) or Vacuum Box Test (ASTM D5641)

K. Repair failed areas and re-test.

L. Keep records of all repairs and the results of repair testing.

3.11 CLEANING

A. Cleaning solvents shall not be used unless product is approved by membrane manufacturer.

B. Use water and rags for all cleaning. If soap is used for cleaning rinse with clean water and dry before welding.

END OF SECTION 33 38 00