HLCNF_MeriwetherPicnicArea_FSSS.pdf

i

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

FOR

MERIWETHER PICNIC AREA –

WATER SYSTEM IMPROVEMENTS

USDA Forest Service, Region 1 Helena – Lewis and Clark National Forest

Helena Ranger District Lewis and Clark County, Montana

Prepared by:

GREAT WEST ENGINEERING, INC.

2501 Belt View Drive

Helena, MT 59601 ii

Table of Contents Preface 101 – Terms, Format, and Definitions 102 – Bid, Award, and Execution of Contract 103 - Scope of Work 104 - Control of Work 105 - Control of Material 106 - Acceptance of Work 107 - Legal Relations and Responsibility to the Public 108 - Prosecution and Progress 109 - Measurement and Payment 152 - Construction Survey and Staking 153 - Contractor Quality Control 155 - Schedules for Construction Contracts 157 - Soil Erosion and Sediment Control 203 - Removal of Structures and Obstructions 611 – Water Systems 705 - Rock 708 – Plastic Pipe

Preface Preface_wo_10_23_2019

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

101 – Terms, Format, and Definitions 101.01_National_11_9_2016

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

101.03_National_11_9_2016

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations

AFPA — American Forest and Paper Association

FSAR — Forest Service Acquisition Regulations

MSHA — Mine Safety and Health Administration

NESC — National Electrical Safety Code

WCLIB — West Coast Lumber Inspection Bureau

(f) Miscellaneous unit abbreviations.

MP — milepost location ppm — parts per million volume STA station location

101.04_National_9_5_2018

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation—(Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S. Department of Agriculture.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Utilization Standards —

The minimum size and percent soundness of trees described in Public Works contract specifications or Timber Sale and IRTC contract provisions to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 – Bid, Award, and Execution of Contract 102.00_National_11_9_2016

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work 103.00_National_11_9_2016

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work 104.00_National_11_9_2016

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

105 - Control of Material 105.02_National_2_25_2019

Add the following to Subsection 105.02c:

105.02(c) Contractor-located sources.

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work shall be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area. The following applies to this contract:

A Forest Service weed specialist will inspect proposed sources to determine weed-free status. Provide the Contracting Officer written notification of proposed material sources 21 calendar days prior to use.

Written approval of the specific source will be provided to the contractor by the CO. If weed species are present in the proposed source, appropriate mitigation measures may allow conditional use of the source as required by the Contracting Officer.

106 - Acceptance of Work 106.01_National_7_18_2017

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is stricter.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project.

When the Government tests work, copies of test reports are furnished to the Contractor upon request.

Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive.

The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work;

providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

1. Sampling method;

2. Number of samples;

3. Sample transport;

4. Test procedures;

5. Testing laboratories;

6. Reporting;

7. Estimated time and costs; and

8. Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third-party laboratory. Use a third-party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

106.02_National_11_9_2016

Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection.

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

107 - Legal Relations and Responsibility to the Public 107.02_National_2_25_2019

Add the following to Subsection 107.02:

107.02 Protection and Restoration of Property and Landscape.

The Contractor will be allowed to close the site to the public for the duration of the construction activities. The Contractor will be responsible for providing, installing, maintaining, and removing four informational signs during the closure period. One sign shall be placed at the Gates of the Mountains Marina (in an area approved by the CO prior to boat parking and with approval from landowner) and shall read, “Meriwether Picnic Area temporarily closed to public access”. The second sign shall be placed along USFS Trail 257 in the Coulter Campground vicinity and shall read the same as the other sign. The third sign shall be placed at the Meriwether docks, the fourth sign shall be placed at the Meriwether barge landing and both shall read the same as signs one and two.

The Contractor may close the Meriwether Picnic Site to the public for a total of 30 calendar days.

Payment for signing shall be indirect to the Mobilization bid item. See Subsection 109.05.

107.05_National_7_18_2017

Delete Subsection 107.05.

Delete Subsection 107.05.

108 - Prosecution and Progress 108.00_National_11_9_2016

Delete Section 108 in its entirety.

Delete Section 108.

109 - Measurement and Payment 109.00_National_11_9_2016

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

109.01_National_2_22_2019

Delete the third paragraph and Table 109-1 of Subsection 109.01 and replace with the following:

109.01 Measurement of Work.

Take measurements as described in Subsection 109.02 unless otherwise modified by the Measurement Subsection of the section controlling the work being performed. Table 109-1 indicates the accuracy required for quantities of the various pay units used in the Schedule of Items. Use this guide to determine the decimal placement in the final payment.

Table 109-1 Decimal Accuracy of Quantities for Final Payment

Pay Item Level of Precision Linear Foot 1

Exception--Timber, Steel, and concrete Piles 0.1 Station 0.1 Mile 0.01 Square Foot 0.1 Square Yard 0.1 Each 1 Acre 0.01 Gallon 1 M-Gals. 0.1 Cubic Yard 1

Exception--Structure Excavation; Sheathing Materials; Bedding, Bed Course, and Backfill Materials; Gabions;

0.1

Exception--Concrete; Masonry 0.01 Pound 1 Ton 0.1

Exception--Calcium Chloride;

Sodium Chloride; Hydrated Lime;

Bituminous Materials; Pavements;

Bed Course Materials

0.01

Hour 0.1

MFBM 0.01

Station Yard 1 Cubic Yard Mile 1 Ton Mile 1

109.02_National_11_9_2016

Add the following sentence to Subsection 109.02(b):

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

152 - Construction Survey and Staking 152.00_National_2_25_2019

Add the following to Subsection 152.04(c):

152.04 General.

(c) Material.

Use required stake dimensions and materials. Pre-paint the top 2 inches of all stakes and lath, or mark them with plastic flagging. Use designated colors for paint or flagging. Mark all stakes with a stake pencil that leaves a legible imprint, or with waterproof ink.

Do not use aerosol spray paints.

Use moisture-resistant paper for survey notes. Keep notes in books with covers that will protect the contents and retain the pages in numerical sequence.

Make the following changes to Subsection 152.05:

152.05 Survey and Staking Requirements.

Add the following to Subsection 152.05(e):

(e) Clearing and grubbing limits.

Mark the clearing limits with flagging or tags on trees to be left standing, or on lath. Make markings intervisible, and no more than 90 feet apart.

After establishing clearing limits, move the location line stake outside the clearing limits for station identification purposes, and mark it with horizontal distance to location line.

Add Subsection 152.05(m):

(m) Hydrant and Water Line Stakes. When required, locate horizontal stakes of critical system components as determined by the CO. Mark stakes with the name of the critical system component.

Place at least two reference stakes at least 10 feet outside the clearing limit and mark with the offset distance to the stake. Place sight stakes when required. Propose staking increments for approval by the CO.

Actual new water line locations may vary from either side of the centerline of pipe as shown on the Drawings if it is required to avoid obstruction, utilities, etc. as approved by the CO. The CO will determine the actual locations of the water line in the field. Since this will be to benefit the Contractor, no additional cost will be allowed.

Replace Table 152-1 with the following:

Table 152-1 Construction Survey and Staking Tolerances Table 152-1

Construction Survey and Staking Tolerances (1)

Staking Phase Horizontal Vertical

Control points set from existing Government control points- Tolerance Class A

±0.03 feet (±10 millimeters)

±0.01 feet × N

(±3 millimeters × N )(2)

Mapping, topography, and cross-section Points- Tolerance Class A

±0.16 feet (±50 millimeters)

±0.16 feet (±50 millimeters)

Centerline points (3) including (PC), (PT), (POT),(POC), and references- Tolerance Class A

±0.06 feet (±20 millimeters)

±0.06 feet (±20 millimeters)

Slope-stake and slope-stake references- Tolerance Class A (4)

±0.16 feet (±50 millimeters)

±0.16 feet ±50 millimeters)

Culverts, ditches, and minor drainage structures stakes- Tolerance Class A

±0.16 feet (±50 millimeters)

±0.06 feet (±20 millimeters)

Retaining walls stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Curb and gutter stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Bridge substructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Bridge superstructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Table 152-1 Construction Survey and Staking Tolerances (continued) (1)

Staking Phase Horizontal Vertical

Clearing and grubbing limit stakes- Tolerance Class A

±1.00 feet (±300 millimeters)

Roadway subgrade finish stakes- Tolerance Class A (6)

±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

Roadway finish grade stakes (6) ±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

Control points set from existing Government control points –Tolerance Class B (7)

±0.16 feet (±20 millimeters)

±0.16 feet ×

(±20 millimeters × )(2)

Mapping, topography, and cross-section points–Tolerance Class B (7)

±1.00 feet (±300 millimeters)

±0.50 feet (±150 millimeters)

Centerline points including (PC), (PT), (POT),(POC), and references–Tolerance Class B (7)

±0.16 feet (±20 millimeters)

±0.16 feet (±20 millimeters)

Slope-stake and slope-stake references– Tolerance Class B (7)

±0.50 feet (±50 millimeters)

±0.16 feet ±50 millimeters)

Culverts, ditches, and minor drainage structures stakes–Tolerance Class B (7)

±0.50 feet (±150 millimeters)

±0.16 feet (±20 millimeters)

Clearing and grubbing limit stakes–Tolerance Class B (7)

±2.00 feet (±600 millimeters)

Roadway subgrade finish stakes–Tolerance Class B (7)

±0.50 feet (±50 millimeters)

±0.16 feet (±10 millimeters)

Roadway finish grade stakes–Tolerance Class B (7)

±0.50 feet (±50 millimeters)

±0.16 feet (±10 millimeters)

Hydrant and Water Line Stakes ±0.50 feet (±50 millimeters)

(1) At statistical 95 percent confidence level. Tolerances are relative to existing Government control points.

(2) N is the number of instrument setups.

(3) Centerline points: PC - point of curve, PT - point of tangent, POT - point on tangent, POC - point on curve.

(4) Take the cross-sections normal to the centerline ±1 degree.

(5) Bridge control is established as a local network and the tolerances are relative to that network.

(6) Includes paved ditches.

(7) Tolerance Class B for Very Low Volume Roads with an aggregate or native finished surface.

N

N

153 - Contractor Quality Control 153.02_National_2_25_2019

Delete Subsection 153.02 and replace with the following:

153.02 Qualifications.

Submit the following for approval with the quality control plan:

(a) Quality control manager (QCM). Furnish a QCM who has at least 2 years’ experience in construction, inspector, quality control and material testing on construction projects of similar type and scope.

(b) Testers. Provide testers with at least one year experience in the type of sampling and testing required, and with one of the following for the type of sampling and testing performed:

(1) NICET Level II certification in highway material or equivalent state or industry certification;

(2) Certification by a regional certification program (such as Western Alliance for Quality Transportation Construction (WAQTC), Northeast Transportation Technician Certification Program (NETTCP), Southeast Task Force for Technician Training and Qualification (STFTTQ), or Multi Regional Training and Certification (M-TRAC)); or

(3) At least one year employment by an AASHTO accredited laboratory performing equivalent sampling and testing.

153.03_National_2_25_2019

Add the following paragraph to the end of Subsection 153.03(b):

153.03 Quality Control Plan.

(b) Quality Control Procedures.

Submit written proposals for approval of alternate AASHTO or State approved test methods. Alternate methods may be allowed based on documented equivalence to the specified method.

153.07_National_2_25_2019

Delete Subsection 153.07 and replace with the following:

153.07 Records and control charts.

Maintain complete testing and inspection records by pay item number and make them accessible to the

CO.

153.07_Project_1_24_2025

Add the following.

153.07. Project Submittals

At a minimum the contractor shall provide project submittals as shown on the Submittal Log below. Submittal requirements are listed in the Standard Specifications, Supplemental Specifications, and Drawings.

Submittal Log

Log No.

Indirect to Pay Item(s) Description of Submittal

Type of Submittal

Requirement found in

Specification No.

/Drawings

Additional Specification References

1 151 Submittal Schedule Schedule

2 151 Weed Free Material Source Certification

Material Certification

FSSS 105.02(b)

3 151 Hazardous Spill Plan Plan FSSS 107.10

4 151 Contractor Quality Control Plan Plan 153.02 552.09

5 151 Material Storage/Staging/Access Plan

Plan and Description

FSSS 151 Drawings

6 152 Surveyor Credentials Certification FSSS 152

7 157 Soil Erosion and Pollution Control Plan

Plan FSSS 157.03

8 611 Water Tank Material Certification

FSSS 611,

Drawings

9 611 Water Pipe, Fittings, Hydrants, Valve Box & Appurtenances (Including Tracer Wire)

Material Certification

FSSS 611,

Drawings

10 611 Pitless Adapter, Drop Pipe, Sanitary Well Cap & Pump Appurtenances

Material Certification

FSSS 611,

Drawings

11 611 Concrete Concrete Mix Design

12 611 Riprap Material Certification

FSSS 705.02 251

13 611 Bedding Material Material Certification

704.02 611

155 - Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

157 - Soil Erosion and Sediment Control 157.04_National_2_25_2019

Delete Subsection 157.04 and replace with the following:

157.04 General.

Thirty (30) calendar days prior to the start of construction, submit a written plan according to subsection

104.03 with all necessary permits that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control without approval.

When erosion control measures are not functioning as intended, take corrective action to eliminate or minimize pollutants in storm water discharges from the project.

203 - Removal of Structures and Obstructions 203.05_National_2_25_2019

Add the following to Subsection 203.05:

203.05 Disposing of Material.

(e) Windrowing Construction Slash. Place construction slash outside the roadway in neat, compacted windrows approximately parallel to and along the toe line of embankment slopes. Do not permit the top of the windrows to extend above subgrade. Use construction equipment to matt down all material in a windrow to form a compact and uniform pile. Construct breaks of at least 15 feet at least every 200 feet in a windrow. Do not place windrows against trees.

(f) Scattering. Scatter construction slash in designated areas without damaging trees. Limb all logs. Place logs and stumps away from trees, positioned so they will not roll, and are not on top of one another.

Limb and scatter other construction slash to reduce slash concentrations. When scattering for erosion control, place construction slash as flat as practicable on the completed slope.

(g) Chipping. Use an approved chipping machine to chip slash longer than 3 feet. Deposit chips on embankment slopes or outside the roadway to a loose depth less than 6 inches. Minor amounts of chips or ground woody material may be permitted within the roadway if they are thoroughly mixed with soil and do not form a layer.

(h) Debris Mat. Use tree limbs, tops, cull logs, split stumps, wood chunks, and other debris to form a mat upon which construction equipment is operated. Place stumps upside down and blend stumps into the mat.

(i) Decking. Remove brush from designated log deck areas. Limb and top logs.

Logs not meeting the Utilization Standards described in Subsection 201.04(c) shall be cut to lengths approved by the CO and decked in designated log deck location.

Merchantable timber not associated with an existing timber sale shall be cut to length meeting the Utilization Standards described in Subsection 201.04(c).

Deck logs so that logs are piled parallel to one another; can be removed by standard log loading equipment; will not damage standing trees; will not interfere with drainage, and will not roll. Keep logs in log decks free of brush and soil.

(j) Removal to designated locations. Remove construction slash to designated locations.

(k) Piling. Pile construction slash in designated areas. Place and construct piles so that if the piles are burned, the burning will not damage remaining trees. Keep piles free of dirt from stumps.

611 – Water Systems 611.02_Project_1_24_2025

Add the following to the end of Section 611.02

611.02 Materials

BALL VALVES

A. Ball valves for water service shall be of bronze or brass construction with two-piece end entry body, bronze or brass ball, teflon or Viton stem seal, reinforced teflon seats and thrust washer, a removable operating lever, and threaded ends.

B. Valves shall be rated not less than 500 psi nonshock cold WOG and shall be driptight in both directions.

C. Valves shall be Conbraco Industries "Apollo 70-100 Series", Powell "Fig 4210T", Stockham "S-216” or approved equal.

FROST-FREE HYDRANT

A. Hydrant to be Certified Lead Free to NSF/ANSI 372-2016, Drinking Water System Components.

B. Hydrant shall have a brass foot valve, hose adaptor and pivot connector.

C. Hydrant to be steel, zinc-plated 1 inch diameter pipe with ¾ inch FNPT connection.

BURIED POLYETHYLENE STORAGE TANK

A. Tank shall be manufactured from high-density polyethylene with U.V. inhibitors and NSF approved. Resins must be FDA compliant for potable water use.

B. Tank shall be sectional ribbing designed to withstand up to 400 psf load pressure.

C. Tank shall be equipped with multiple fitting flats to accommodate a variety of plumbing configurations.

D. Tank shall have a minimum 20-inch diameter access cover and riser. A closed cell foam gasket shall be installed between the riser and the tank to ensure a water-tight seal.

E. Tank lid shall be lockable and watertight. Lid to overlap riser opening and extend down the riser at least two inches.

WELL CAP, VENT & SANITARY SEAL

A. The watertight cap shall be secured to the well casing with a compression gasket.

B. The cap shall include a 1-inch diameter threaded sanitary plug to allow unobstructed access to the PVC tube for water level monitoring.

C. The top of the cap must be able to be removed without affecting the sealed conduit, PVC water level monitoring tube or wiring.

D. The heavy-duty watertight cap will have a separate protected downward facing screened well vent with a pipe nipple.

1. Pipe nipple: 1.5-inch diameter, 6-inch long.

2. Screen: 24 mesh corrosion resistant.

E. Sanitary seal: holes for piping and cables, that fits into top of casing and is removable, waterproof, and vermin proof.

F. Construction of the cap and well vent will be of heavy-duty gray cast iron and painted with a green enamel finish.

CHECK VALVES

A. Check valves shall be low pressure drop, self-cleaning, swing type check valves, with elastomer seal at seat, and constructed of corrosion resistant materials.

611.03_Project_1_24_2025

Add the following paragraphs to the end of Section 611.03

611.03 General

Install all valves, equipment and accessories in accordance with the manufacturer’s requirements.

Reference shall be made to jointing and alignment specifications.

Pressure test all valves in a similar manner to and in conjunction with the testing prescribed for piping systems. Additionally, individually test each valve for full and unhindered operation after installation.

Disinfection required per AWWA standards for the water storage tank and for the distribution system.

PERMANENT SUBMERSIBLE PUMP

A. The permanent submersible pump shall be installed according to the manufacturer's recommendations. A qualified representative of the manufacturer shall supervise and approve installations and provide all startup services.

B. Install submersible well pumps per manufacturer’s recommendations and provide access for periodic maintenance.

1. Before lowering permanent pump into well, start pump to verify correct rotation.

2. Secure the pump at the required elevation as recommended by the pump manufacturer.

3. Securely tighten discharge piping joints.

4. Connect motor to submersible pump and locate near well bottom.

a. Connect power cable while connection points are dry and undamaged.

b. Do not damage power cable during installation; use cable clamps that do not have sharp edges.

c. Install water-sealed surface plate that will support pump and piping.

5. Electrical cable to the pump must be firmly attached to the riser pipe at 20-foot intervals or less.

C. Following completion of the pump installation and drop piping, the pumps shall be tested to determine field performance for satisfactory operation. Tests, at a minimum, shall measure:

1. Amperage draw

2. Pressure at which the amperage was measured

3. Shut off head

4. Voltage

5. Drawdown.

6. The Contractor shall provide a written report to the Engineer summarizing all operating conditions measured.

D. Disinfect water supply wells according to AWWA A100, AWWA C654 and ARM

36.21.662(1).

1. After permanent pumping equipment has been installed.

E. Government shall sample and engage a qualified testing agency, certified by the Department of Public Health and Human Services, to make bacteriological analyses of water from each finished well and report the results.

SUBMITTALS

It shall be the Contractor's responsibility to submit all items with such promptness as to cause no delay in the work. Approvals must be obtained before starting work which involves the item. The Contractor shall allow 5 business days for processing of submittals by the Government.

Manufacturer's Literature: Submit 3 copies to the Contracting Officer for approval on the items required herein. Literature shall be marked or otherwise designated to indicate the exact model, size, etc., the Contractor proposes to use. Information shall be adequate to determine compliance with the specifications without additional research by the Contracting Officer. One copy of approved submittals will be returned to the Contractor.

Submit a shop drawing and literature of the water tank (including riser, lid, vent pipe and other appurtenances) to the Contracting Officer for approval prior to fabrication of the tank and appurtenances.

Shop drawing shall show all dimensions and component details.

Submit specified literature of the water pipe, fittings, vaults, hydrants and appurtenances to the Contracting Officer for approval prior to fabrication.

Submit specified literature of the pitless adapter, drop pipe, sanitary well cap and other appurtenances (as identified in the Drawings) to the Contracting Officer for approval prior to fabrication.

705 - Rock 705.02_National_2_25_2019

Add the following Class to Table 705-1 in Subsection 705.02:

705.02 Riprap. Table 705-1.

Table 705-1

Gradation Requirements for Riprap(1)

Class

% of Rock Equal or Smaller by Count, DX

Range of Intermediate

Dimensions,(2) inches (millimeters)

Range of Rock Mass,(3) pounds (kilograms)

100 6 – 8 (150 –200) 17 – 41 (8 – 19) 85 5 – 6 (150 – 150) 10 – 17 (5 – 8) 50 2 – 5 (50 – 125) 0.6 – 10 (0.3 – 5) 15 0 – 2 (0 – 50) 0 – 0.6 (0 – 0.3)

708 – Plastic Pipe 708.01_Project_1_24_2025

Add the following to the end of Section 708.01

708.01 Smooth Wall Polyethylene Pipe

Furnish nonperforated ½- to 3-inch diameter HDPE pipe conforming to AWWA Specification C901. Use Class 200 HDPE pipe with a DR of 7.

5. Electrical cable to the pump must be firmly attached to the riser pipe at 20-foot intervals or less.

E. Government shall sample and engage a qualified testing agency, certified by the Department of Public Health and Human Services, to make bacteriological analyses of water from each finished well and report the results.

SUBMITTALS