Revised Section B C and Special Project Specifications.pdf

PART 1 - THE SCHEDULE

SECTION B - SUPPLIES OR SERVICES AND PRICES/COSTS

Raven’s Roost Cabin Construction Petersburg Ranger District, Tongass National Forest Petersburg, Alaska

B.1 SCHEDULE OF ITEMS

NOTE: Offerors must provide an offer on ALL ITEMS

PAY DESCRIPTION METHOD OF EST. UNIT TOTAL

ITEM MEASUREMENT* QTY. UNIT PRICE AMOUNT

BASE BID ITEMS:

Mobilization LS 1 EA $ $___________

Supply and install one 16x20 cabin with loft and associated structures, including all site work. LS 1 EA $ $___________

Supply and install one outhouse, associated structures and (4) waste storage tanks, including all site work. LS 1 EA $ $___________

Trail construction (approx. 330 LF) and trail sign installation. LS 1 EA $ $___________

TOTAL BASE BID PRICE $

OPTION ITEM #1:

Supply and install cabin furnishings (table top gov’t furnished); supply and install one site identification sign. LS 1 EA $ $___________

TOTAL OPTION ITEM #1 PRICE $

OPTION ITEM #2:

Supply and install one propane heating system. LS 1 EA $ $___________

TOTAL OPTION ITEM #2 PRICE $

OPTION ITEM #3:

Demolish existing 2-story Raven’s Roost Cabin and associated outhouse;

site rehabilitation using excavated materials from new cabin site. LS 1 EA $ $___________

TOTAL OPTION ITEM #3 PRICE $

REVISED SECTION B, C, SPECIAL PROJECT SPECIFICATIONS

TOTAL BID PRICE: $_____________

* METHOD OF MEASUREMENT: AQ = ACTUAL QUANTITIES; LS = LUMP SUM QUANTITIES; VQ =

VEHICLE QUANTITIES

BIDDER: __________________________________ PHONE: ______________________________________

BY:

(Signature) (Title) (Date)

OFFEROR MUST ALSO COMPLETE "OFFER" PORTION ON PAGES 2 & 3 OF STANDARD FORM 1442

SECTION C - DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

Raven’s Roost Cabin Construction Petersburg Ranger District, Tongass National Forest Petersburg, Alaska

C.1 PROJECT DESCRIPTION AND LOCATION

(a) Description: Major work items under Base Bid for this contract include construction of one 16’x20’ cabin with loft and associated covered deck, porch, and foundation; construction of one outhouse with associated service deck, foundation and (4) custom waste storage tanks; related site work; new trail construction comprised of aggregate surfacing, concrete steps and metal staircase, and related site work.

Option items include demolition of existing Raven’s Roost cabin and outhouse with related site rehabilitation using excavated materials from new cabin site, and supplying and installing the following at the new cabin site: cabin furnishings, site identification sign, and one propane heating system. Note that demolition of the existing cabin cannot occur until after November 1, 2020 due to obligations under a current contract.

(b) Location and Facilities: The project site for Base Bid work is located at 56°46'39.37", -132°56'21.14" near the terminus of Raven Trail Phase 2. This site is approximately 2.5 miles S-SE of downtown Petersburg, AK, and 2 miles S-SW of the helicopter facility at Petersburg Airport. The project site for Option Item #3 work (demolition of existing cabin and outhouse, and related site work) is located at 56°45'44.27", -132°56'8.09", approximately 3 miles S-SW of the helicopter facility at Petersburg Airport. The two sites are approximately one mile apart from each other.

Access to the Base Bid project site is via helicopter or the partially completed Raven Trail. Trail construction is scheduled to be completed November 1, 2020. Access to the existing cabin (Option Item #4 project site) will be via helicopter; an existing boardwalk trail to the site will be removed summer/fall of 2020.

During the 2020 field season there will be an active contract for work to complete Raven Trail Phase 2 and remove the boardwalk trail to the existing cabin. Work is to be completed by November 1, 2020. Coordinate work under this contract with other contracted work in the area so as not to delay, cause harm to, or interfere with another contractor.

There are no utilities at either project site. Cell phone service is typically available throughout the project site.

Petersburg is the nearest community and is accessible by scheduled jet service, barge, and the Alaska Marine Highway ferry system.

(c) Price Range: Between $250,000 and $500,000.

(d) Pre-bid Tour: none

(e) Period of Performance: See Part I, Section F, Clause 52.212-3.

(f) Government-Furnished Property:

1) One table top for cabin table.

2) One routed sign board for trail sign.

3) One tree for one round log sign post.

4) Concrete Steps.

C.2 TECHNICAL SPECIFICATIONS

(a) The technical specifications included in Section J are hereby made part of this solicitation and any resultant contract.

(b) The following specifications (including Region 10 Specifications and Special Project Specifications) are hereby made a part of this solicitation and any resultant contract:

1. FOREST SERVICE STANDARD SPECIFICATIONS FOR CONSTRUCTION OF TRAILS AND TRAIL

BRIDGES ON FOREST SERVICE PROJECTS, 10/30/2014. Note that this version supersedes EM-7720-103, Standard Specification for Construction and Maintenance of Trails (1996).

Copies of the Forest Service Specifications can be purchased from:

Government Printing Office, 915 Second Ave. Seattle, WA 98174, (206) 553-4270.

Or may be viewed online at: FS/Trail_Specifications.pdf

2. Architectural Barriers Act Accessibility Standards (ABAAS) apply to cabin and outhouse interior layout and external entryways, and may be viewed online at: ABAAS.

3. Forest Service Outdoor Recreation Access Route (FSORAR) standards apply to trail layout and grades between cabin and location of future outhouse. FSORAR standards are contained within the Forest Service Outdoor Recreation Accessibility Guidelines (FSORAG) and may be viewed online at: FSORAG.

C.3 Special Project Specifications included in full text in Section J are as follows:

SECTION 011100 – SUMMARY OF WORK

SECTION 013300 – SUBMITTALS

SECTION 014000 – QUALITY ASSURANCE AND QUANTITY MEASUREMENT

SECTION 014200 – TERMS, ABBREVIATIONS, ACRONYMS, AND DEFINITIONS

SECTION 015000 – MAINTENANCE FOR TRAFFIC

SECTION 015700 – EROSION CONTROL

SECTION 016000 – CONTROL OF MATERIALS

SECTION 017113 – MOBILIZATION

SECTION 024100 – DEMOLITION

SECTION 031000 – AGGREGATE SURFACE AND CONCRETE STEP TRAIL

SECTION 033000 – CAST-IN-PLACE CONCRETE

SECTION 061000 – ROUGH CARPENTRY

SECTION 101400 -- SIGNS

SECTION 133400 – FABRICATED ENGINEERED STRUCTURES

SECTION 231000 – PROPANE HEATING SYSTEM

SECTION 311000 – CLEARING AND GRUBBING

SECTION 312000 – EXCAVATION AND EMBANKMENT

SECTION 321000 – LABORER WORK

http://www.fs.fed.us/recreation/programs/trail-management/documents/plans/supporting_documents/Trail_Specifications.pdf https://www.access-board.gov/guidelines-and-standards/buildings-and-sites/about-the-aba-standards/aba-standards https://www.fs.fed.us/recreation/programs/accessibility/FSORAG_2013%20Update.1.docx

Raven’s Roost Cabin Construction

SPECIAL PROJECT SPECIFICATIONS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 011100

SUMMARY OF WORK

PART 1 - GENERAL

1.01 DESCRIPTION

A. Base Bid work includes construction of one 16’x20’ cabin with loft, covered front deck, covered rear porch, and foundation based on provided drawings; construction of one outhouse with associated service decks, foundation and (4) custom waste storage tanks based on supplied drawings; supplying and installing all materials for the cabin and outhouse including foundations, covered decks, porch, and related site work; supplying and installing all materials for new trail construction comprised of aggregate surface trail, metal staircase, aggregate pad with spur trail for propane tank, installing government furnished concrete steps, and related site work.

Option items include demolition of existing Raven’s Roost cabin and outhouse with related site rehabilitation using excavated materials from new cabin site, and supplying and installing the following at the new cabin site: cabin furnishings, site identification sign, and one propane heating system. Note that demolition of the existing cabin cannot occur until after November 1, 2020 due to obligations under a current contract. A copy of the 1980 cabin construction drawings is included in Section J. These are not as-built drawings.

B. Provide shop drawings, construction details, assembly instructions, and other submittals to illustrate all aspects of the proposed cabin and outhouse, custom tanks with frames, and assembly procedure. The submittal for review and approval of the Government will be made prior to commencing of work on site.

C. Base the submittals upon the design concepts in provided drawings, with modifications made where necessary to accommodate design requirements peculiar to the Contractor's methods of construction. All suggested modifications to the plans are subject to review and approval by the Government. The design will comply with all applicable building codes.

D. Work includes the delegated design for a custom waste tank and aluminum frame system.

Specific design criteria is outlined on the Drawings and are to be followed in the design.

The Contractor shall work with a custom manufacturer for the refinement of the design to meet project needs including materials, dimensions, capacity, weight, and other elements outlined on the Drawings. Complete shop drawings including all calculations are to be provided for CO approval prior to beginning Work.

1.02 QUALITY ASSURANCE

A. Provide stamped shop drawings, construction details, technical specifications, structural calculations and other submittals to illustrate all aspects of the proposed cabin, outhouse, and associated structures including decks, porch, roofs, foundations, and assembly procedures for review and approval by the Government prior to commencing fabrication of structures.

B. Shop drawings shall bear the stamp of an Alaska registered Architect or Professional Engineer. Calculations shall be prepared and stamped by a Professional Engineer licensed in the state of Alaska.

C. The Contractor's proposed shop drawings shall conform substantially with the design drawings provided for bid by the Government. All proposed variations shall conform with applicable design codes.

D. Ensure that all aspects of the finished structures and site improvements meet International

Building Code of the International Code Council requirements and the applicable standards of accessibility as outlined in the Forest Service Outdoor Recreation Accessibility Guidelines (FSORAG) and Architectural Barriers Act Accessibility Standards (ABAAS).

1.03 RELATED WORK

A. CABIN DESCRIPTION. See Design Narrative Synopsis for structural design values, materials guidelines and additional design-related information.

B. OUTHOUSE. See Drawings for written specifications for Outhouse design.

C. METAL STAIRS. See Drawings for written specifications for Metal Stairs (MS).

PART 2 – NOT USED

PART 3 – NOT USED

END OF SECTION

SECTION 013300

SUBMITTALS

PART 1 – GENERAL

A. Major submittal items include:

1) Cabin and outhouse construction drawings and written specifications based on the provided design drawings for the purpose of establishing the final specifications for:

a. Quality assurance;

b. Design configurations;

c. Performance standards;

d. Materials, color, texture, finish;

e. Other features necessary for a complete description of the Work to be performed.

Cabin and outhouse shop drawings and specifications approved by the CO during performance of this contract shall supersede any conflicting government-supplied design specifications for same structures.

Note that a cabin “kit” meeting specified design requirements may be acceptable.

2) Delegated Design for Tanks and Frames including materials, dimensions, welds, and other components to fully illustrate the delegated design.

3) Erosion and Sedimentation Control Plan (ESCP) per Section 015700.

4) Product certifications of type, quality, and color as specified herein.

5) Sign submittal per Section 101400.

6) Camping plan if required.

Submittals shall be approved by the Contracting Officer. The Contractor shall not purchase, order, ship, install, or otherwise incur costs for a product or other work subject to submittal approval until after approval is granted by the Contracting Officer. The government shall not be responsible for payment for any work, product, design, etc., not approved.

Rejection of any submittal by the Contracting Officer constitutes notice that a resubmittal is required for the same purpose; rejections shall be explained.

PART 2 – PRODUCTS

2.01 STAMPED SHOP DRAWINGS

A. Within sixty (60) calendar days of receipt of Notice to Proceed, the Contractor shall submit to the Contracting Officer two copies of shop drawings, structure calculations and other instructions for review. These submissions shall clearly illustrate, at minimum, the following:

1) Scaled drawings showing the elevation views of each side of each structure and associated elements (decks, porch, etc.).

2) Scaled drawings of floor plans.

3) Scaled drawings of foundation plan and floor framing plan.

4) A complete list of materials to be supplied by the Contractor.

5) Manufacturer’s specification sheets for all products and materials including windows, doors, roofing, and insulation.

6) Assembly instructions and construction detail drawings for all cabin elements such as walls, window installations, foundation, insulation, deck with guardrail, porch deck and roofing with roof supports, structural accommodations for propane heating system etc.

7) Structural design values

8) Structural calculations

9) Proposed method of shipment and delivery date.

B. The contractor's proposed shop drawings shall conform substantially to the conceptual

Drawings and Design Narrative Synopsis provided by the Government, however, the contractor's proposed interior cabin wall dimensions may be increased slightly to conform to kit requirements if a cabin kit is proposed. If cabin width increases, propose a matching width increase for front deck. Proposed variations shall be highlighted in the proposed shop drawing submittal.

C. All proposed variations shall conform to applicable building codes.

D. Special Project Specifications provided by the government associated with construction of cabin, outhouse, and associated appurtenances are for design reference only unless specifically incorporated into contractor’s stamped drawings and specifications, and approved by CO. Approved shop drawings and specifications shall take precedence over design drawings and specifications provided by the Government.

If discrepancies in design direction are found between government-provided design drawings, and Design Narrative Synopsis requirements, resolve such issues in submittals and highlight for discussion and approval.

E. Shop drawings shall bear the stamp of an Alaska registered Architect or Professional

Engineer. Calculations shall be prepared and stamped by a Professional Engineer licensed in the state of Alaska.

F. The Government shall review the submittal and within 21 calendar days provide a written response to the contractor outlining any corrections to the proposed working drawings. The Contractor shall then have 14 calendar days to submit the corrected shop drawings to the Contracting Officer for approval. Approval of the shop drawings will constitute the Contractor's Notice to Proceed.

2.02 MATERIALS AND SITE LAYOUT

A. Prior to ordering materials and beginning site work the contractor shall submit or stake the following for approval:

1) Submit for approval sign manufacturer’s scaled drawing for cabin identification sign as described in Section 101400.

2) Submit manufacturer’s color samples for all products where color choices are available, such as roofing, windows, doors, and other products identified in the Design Narrative Synopsis and in SECTION 133400 Fabricated Engineered Structures. A computer image or paper printout from an online source will not be accepted.

3) Submit all material and product certifications as required in project specifications for trail construction materials such as aggregate gradation sheet and results of concrete testing.

See Drawings for specifications and requirements related to Metal Stairs.

4) Stake trail centerline based on preliminary government staking.

5) Stake top and bottom footing locations for Metal Stairs (MS)

6) Prior to site clearing, transfer the FFE for cabin as flagged by the Government on site to a location that will remain undisturbed during construction. Verify that this FFE will provide an accessible transition between cabin floor and trail to outhouse. If a discrepancy is found, work with the CO on an acceptable resolution. Ensure landing outside rear cabin entry meets all relevant accessibility guidelines such as cross slope and clear area for the specified door swing.

7) Preliminary stakes have been placed to mark corners of cabin, deck, and rear porch; these will require adjustment. After site clearing, the Government in conjunction with contractor will stake corners of cabin and deck.

8) Stake corners of outhouse and service decks. Ensure aggregate pad landing meets all relevant accessibility guidelines such as cross slope and clear area for the specified door swing.

9) Identify for approval all areas proposed for disposal of unsuitable materials from clearing and grubbing, downhill and out of sight of cabin, trail and outhouse as described in Section 311000 Clearing and Grubbing.

B. The Government shall review submittals and staking within 7 working days and provide a response to the contractor.

SECTION 014000

QUALITY ASSURANCE AND QUANTITY MEASUREMENT

A. Work includes providing certification that the quality and quantity of construction conform to the drawings, specifications, and requirements of the contract.

1.02 MEETINGS AND APPROVALS

A. Scheduling. For all meetings and coordination listed below and elsewhere in the Specifications, provide 5 working days’ notice of proposed schedule so the Government may coordinate response.

B. Aggregate Surfacing and Bedding Subgrade Approval. For Aggregate Surfacing and trail types that require bedding, obtain Government inspection and approval after subgrade preparation is complete and before placement of aggregate or bedding. Do not place aggregate until subgrade is approved.

C. Staking for Approval. Where staking for approval is indicated, provide a location stake for item in question with description written on it, and notify Government for review and approval within 5 working days. Items to be staked for approval are listed in Section 013300 Submittals.

D. Representative Trail Samples. At approved locations, prepare 10’ representative samples of each type of trail construction in this contract (example; 10 LF of Aggregate Surfacing, 10 LF of Concrete Steps, etc). Obtain review of the representative samples, correct any deficiencies, and obtain final approval before proceeding with any other work of that type. When accepted, the sample will be incorporated into the work. The representative samples will serve as a standard of workmanship and materials for other work on the project.

2.01 MATERIALS

A. Offsite-Produced Materials and Submittals. Furnish signed certificates executed by the manufacturer, supplier, or vendor, stipulating that all offsite-produced materials incorporated in the work meet applicable requirements. Furnish a certificate for each commodity or invoice. Examples are framing hardware and connectors, manufacturer’s wood treatment certification, certification of lumber grade, aggregate gradation, etc.

B. Quantity Measurements. Submit quantities to the CO for periodic progress payments.

Quantities are subject to verification.

SECTION 014200

TERMS, ABBREVIATIONS, ACRONYMS, AND DEFINITIONS

1.01 TERMS

A. Specification Terms. These specifications are generally written in the imperative mood. In sentences using the imperative mood, the subject “the Contractor,” is implied. Also implied in this language is “shall,” “shall be,” or similar words or phrases. In material specifications, the subject may also be the supplier, fabricator, or manufacturer supplying material, products, or equipment for use on the project. Wherever “directed,” “required,” “prescribed,” or similar words are used, the “direction,” “requirement,” or “order” of the CO is intended. Similarly, wherever “approved”, “acceptable”,” suitable”, “satisfactory”, or similar words are used, they mean “approved by,” “acceptable to,” or “satisfactory to” the CO. The word “will” generally pertains to decisions or actions of the CO. Whenever in these specifications, or in other contract documents, the following terms (or pronouns in place of them) are used, the intent and meaning shall be interpreted as follows: reference to a specific standard, test, testing method, or specification shall mean the latest published edition or amendment that is in effect at the solicitation issue date for the public works contracts.

1.02 ABBREVIATIONS AND ACRONYMS

AASHTO American Association of State Highway and Transportation Officials AGGR Aggregate AQ Actual Quantities AS Aggregate Surfacing ASTM American Society for Testing and Material AWPA American Wood Preservers Association CL Centerline CO Contracting Officer DQ Design Quantities EA Each FFE Finished Floor Elevation HR Hour LF Linear Feet LS Lump Sum LSQ Lump Sum Quantities MW Miscellaneous Work NW No Work NBS National Bureau of Standards PS Product Standard issued by the U.S. Department of Commerce SHT Sheet WCLIB West Coast Lumber Inspection Bureau WWPA Western Wood Products Association

1.03 DEFINITIONS

When the following terms, or pronouns in place of them, are used in these specifications or in other contract documents, the intent and meaning are as follows:

Berm. The ridge of material formed on the outer edge of the trail that projects higher than the tread.

Borrow. Suitable materials taken from approved sources designated on the drawings or on the ground, to be used for embankments and backfilling.

Catch Point. The outer limits of a trailway where the excavation and/or embankment intersect with the ground line.

Clearing Limit. The area over and beside the trail that is cleared of trees, limbs, and other obstructions.

Compacted. Consolidation that is obtained by tamping or rolling suitable material until no noticeable displacement of material is observed.

Contracting Officer (CO). An official of the Government with the authority to enter into, administer, and/or terminate contracts and make related determinations and findings. The term includes certain authorized representatives of the CO acting within the limits of their authority as designated by the CO.

Crusher Fines. A finely crushed stone mix that is often the byproduct of gravel operations.

Danger Tree. An unstable tree 5 inches or greater in diameter at breast height that is likely to fall across the trail.

Designated on the Ground. The location of materials, work areas, and construction items, including lines and grades, marked on the ground with stakes, flagging, tags, or paint.

Drawings. Documents showing details for construction of a facility, including but not limited to straight-line diagrams, trail logs, standard drawings, construction logs, plan and profile sheets, cross-sections, diagrams, layouts, schematics, descriptive literature, and similar materials.

Duff. Organic material overlying rock or mineral soil.

Embankment. A structure of suitable material placed on the prepared ground surface and constructed to the trailbed elevation.

Excess Excavation. Material in the trailway in excess of that needed for construction of designed trailways.

Full Bench. Trailbed constructed entirely on undisturbed material.

Grade. The vertical distance of ascent or descent of the trail expressed as a percentage of the horizontal distance.

Header Rock. Rock laid with the narrow end towards the face of the wall.

Inslope. Where the trail tread is sloped downward toward the backslope.

Mineral Soil. Soil or aggregate that is free from organic substances and contains no particles larger than 2 inches at their greatest dimension.

Outslope. Where the trail tread is sloped downward toward the embankment or daylight side of the trailway.

Sideslope. The natural slope of the ground, usually expressed as a percentage.

Slough. That material from the backslope or the area of the backslope that has raveled onto the trailbed.

Slump. Where the trailbed material has moved downward, causing a dip in the trail grade.

Special Project Specification. Specifications that detail the conditions and requirements peculiar to an individual project, including additions and revisions to the standard specifications.

Surfacing. Material placed on top of the trailbed that provides the desired tread.

Suitable Material. Rock that can be accommodated in the trail structure, and soil free of duff with a recognizable granular texture.

Switchback. A reverse in direction of trail grade with a level landing used to change elevation on a steep slope, usually involving special treatment of the approaches, barriers, and drainages.

Native Topsoil. A mixture of organic and sometimes mineral material from the project site taken from the upper several inches of the soil horizon, with roots and other material greater than 2 inches in any direction removed.

Trailbed. The finished surface on which base course or surfacing may be constructed. For trails without surfacing the trailbed is the tread.

Trailway. The portion of the trail within the limits of the excavation and embankment.

Tread. The surface portion of the trail upon which traffic moves.

Turnout. A short section of extra trail width to provide for passage of trail users.

Waterbar. A structure used for turning water off the trail, usually made of logs or stones.

Water Courses. Any natural or constructed channel where water naturally flows or will collect and flow during spring runoff, rainstorms, etc.

PART 2 – NOT USED

SECTION 015000

MAINTENANCE FOR TRAFFIC

A. The nearby Raven Trail will remain open to the public throughout the period of performance except during helicopter operations. When the upper Raven Trail must be closed for helicopter activities provide the following:

1. A “Trail Closed” sign and simple barricade located a safe distance away from work.

2. A public service announcement on KFSK Radio (772-3808).

B. During normal work activities not involving helicopter, provide an “Area Closed” sign and simple barricade(s) at the junction of this work area and the existing Raven Trail and/or Pond Loop Trail. Do not block use of existing open trails with signage or other materials.

C. Before any suspension of work, take precautions necessary to prevent damage to the project, such as temporary detours, approaches, crossings, and make provisions for normal drainage and to minimize erosion.

D. During the 2020 field season there will be an active contract for work to complete Raven Trail

Phase 2 and remove the boardwalk to the existing cabin. Work is to be completed by November 1, 2020. Coordinate work under this contract with other contracted work in the area so as not to delay, cause harm to, or interfere with another contractor (see also FAR 52.236-8 Other Contractors).

A. Trail closure signs shall be professional in appearance and legible from a distance of 100’.

B. Public service radio announcements shall inform the public of the closure location (farthest segment of trail open to the public), dates of trail closure, and when it will reopen.

SECTION 015700

EROSION CONTROL

PART 1 - GENERAL

1.1 DESCRIPTION

A. Provide all labor, materials, tools and equipment necessary to maintain permanent and temporary erosion control devices prior to and during construction activities; including, but not limited to, silt fences, weed- and seed-free hay or straw bales, wattles or fiber rolls, ditches, etc. The contractor shall be solely responsible for providing erosion control measures to comply with applicable regulations.

B. The work also includes developing an erosion and sediment control plan to minimize or mitigate erosion, sedimentation, and resulting water quality degradation prior to the initiation of construction activities which may result in the delivery of measurable levels of fine sediment to streams or other waterbodies.

1.2 DEFINITIONS

A. Erosion and Sediment Control Plan (ESCP). Permanent and temporary prevention of erosion and control of sedimentation during construction of the Project.

B. Best Management Practices (BMP’s). A wide range of project management practices, schedules of activities or prohibition of practices that when used singly or in combination, prevent or reduce erosion, sedimentation and pollution of adjacent water bodies and wetlands. BMP’s include both structural devises and non-structural practices and can be temporary or permanent. The State of Alaska DOT/PF Best Management Practices for Construction Erosion and Sediment Control describes a variety of standard BMP’s.

1.3 SUBMITTALS

A. Thirty (30) days prior to the start of construction, submit a written ESCP outlining proposed 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.

B. The Government will review and respond to submittals within 14 calendar days. If changes are required for approval, modify the submittals within 5 calendar days of receiving comments from the Government.

C. The approved ESCP becomes the project ESCP. A copy must be kept on site by the Contractor.

PART 2 - PRODUCTS

2.1 EROSION AND SEDIMENTATION CONTROL PLAN (ESCP) REQUIREMENTS

A. Base the ESCP on the approach of first avoiding and preventing erosion, then minimizing erosion and finally trapping sediment before it leaves the project site.

B. Address all ground disturbing activities required by the contract as well as those planned for your operations.

C. Provide the following information in the ESCP:

1. A Site Map displaying the following.

a. Approximate locations of drainage patterns and nearby water bodies likely to receive discharges from disturbed areas of the project,

b. Approximate areas of soil disturbance,

c. Proposed locations, quantities, and types of erosion and sediment control methods.

2. A Written Narrative briefly describing the proposed control measures to be implemented at the construction site, and off-site areas if necessary.

a. Clearly describe for each major activity, appropriate control measures and the period during the construction process that the measures will be implemented.

b. Ensure that all temporary or permanent erosion and sediment control materials do not introduce non-native or invasive species. The use of straw bales and other materials that may introduce any weed seeds or that may result in the germination of an invasive is prohibited.

3. Specifically address your plan for controlling and managing erosion and sedimentation during construction at the following locations.

a. All construction adjacent to existing drainages, streams, lakes, water bodies, wetlands, and other sensitive areas.

b. Designated disposal sites and material sites.

c. Any additional sites which may be sensitive due to the proposed construction operation (including contractor supplied material and disposal sites, staging areas, and stockpile locations).

4. Inspections. Identify the Contractor personnel responsible for inspection of the project’s erosion and pollution control measures.

5. Responsible Party. Clearly identify for each measure shown in the plan, the Contractor and/or subcontractors that will implement and maintain the measure.

PART 3 - EXECUTION

3.1 CONSTRUCTION REQUIREMENTS

A. Do not begin earth disturbing work until written approval of the ESCP has been received from the Government.

B. Contain, clean up, and dispose of all construction related (including camp facilities) discharges of petroleum products and/or other materials hazardous to the land, air, water and organic life forms.

Perform all fueling operations in a safe and environmentally responsible manner. Comply with the requirements of 18 AAC 75 and AS 46, Oil and Hazardous Substances Pollution Control.

C. Implement all temporary and permanent erosion and sediment control measures identified in the ESCP and ensure that the ESCP remains current.

D. Perform inspections within 24 hours of the end of a storm resulting in significant or unusually heavy rainfall.

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

F. Perform other inspection, if directed, during or following high intensity rainfall events of any depth.

G. Prepare inspection reports summarizing the scope of the inspections, names of personnel making the inspection, the dates of the inspections and major observations relating to the implementation of the ESCP. Identify any incidents of non-compliance, steps taken to implement corrective actions to bring the work in compliance with the ESCP. Inspection reports are not required to be submitted to the Government but a copy may be requested by the Government if a concern or issue arises.

H. Based on the results of each inspection, modify the ESCP as necessary to include additional or modified BMP’s designed to correct problems identified. Complete the revisions within 7 calendar days following the inspection. Implement modified or additional BMP’s before the next anticipated storm event or as soon as practicable.

I. Prior to project closeout and demobilization, the CO will review all areas disturbed by construction to determine if final soil and sediment stabilization is complete.

J. The Contractor shall maintain existing temporary erosion control structures as necessary and/or as directed by the Government for the duration of the contract. They shall be maintained in effective operating conditions at all times. Structures shall be cleaned, repaired, or replaced as necessary.

K. Temporary erosion control structures shall remain in place until the Government approves their removal.

SECTION 016000

CONTROL OF MATERIALS

A. Transport and handle all materials to preserve their quality and fitness for the work.

B. Store materials to assure the preservation of their quality and fitness for the work. Locate stored materials to facilitate their prompt inspection. Arrangements for storage on other than designated sites are the responsibility of the contractor.

A. AGGREGATE.

1. Stockpile, load, and transport aggregates in a manner that will preserve specified gradation and avoid contamination.

2. Contain aggregate in bags or similar secure containment until it is installed on the trail. Do not place aggregate directly on the ground outside of the trailway without a tarp or some other means of separation.

3. Seed-Free Aggregate. Provide aggregate materials that are free of viable seeds or vegetative material. Ensure that contamination does not occur from equipment and tools used to handle aggregate or construct trail. Thoroughly wash all equipment and tools that come into contact with aggregate or are used at the work site, to remove all soil, debris, and other material that could contain seed or vegetative material. Use only aggregate from an active stockpile that is certified weed free.

SECTION 017113

MOBILIZATION

1.01 DESCRIPTION. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

PART 2 – MEASUREMENT AND PAYMENT

2.01 PROGRESS PAYMENTS will be made as follows:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

C. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

D. The total of all payments shall not exceed the original contract amount for this item.

DIVISION 2 – EXISTING CONDITIONS

SECTION 024100

DEMOLITION

PART 1 – GENERAL

1.01 DESCRIPTION. Work under this section includes all labor, materials, and equipment for demolition, removal, and disposal of items not indicated to remain. If Option Item 3 is awarded, work also includes demolition of the existing Raven’s Roost Cabin and outhouse; also transportation of materials that were salvaged and stockpiled during partial cabin demolition by government to a location yet to be determined but within 3 miles of existing cabin site. A copy of the 1980 cabin construction drawings is included in Section J. These are not as-built drawings. Note that demolition of the existing cabin cannot occur until after November 1, 2020 due to obligations under an active contract.

PART 2 – MATERIALS

2.01 BACKFILL. For backfill of miscellaneous cavities at the existing cabin site, transport and install excavated material from new cabin site as specified in Section 312000 Excavation and Embankment.

2.02 REVEGETATION. Spread clumps of whole moss plants (tops and roots), and replant other vegetation gathered from adjacent areas and salvaged from new cabin site, over footprint of demolished cabin and outhouse as approved. Install so that roots of moss are in full contact with the ground. Install other vegetation so that top of the root ball, when planted, is at finish grade.

PART 3 – EXECUTION

3.01 PRIOR TO WORK. Verify with the CO that any materials intended for salvage by the Government have been separated, stockpiled, clearly marked by the Government, and a delivery destination is agreed upon. Cooperate with the Government as required. Within heavy traffic areas adjacent to cabin footprint, protect low-growing groundcover vegetation as specified in Section 311000 Clearing and Grubbing;

remove taller vegetative materials for a distance of 5’ around cabin footprint and stockpile in safe area for use in revegetation of disturbed areas.

3.02 DEMOLITION. Demolish the existing Raven’s Roost cabin and outhouse, including all decks, stairs, and related appurtenances. Remove to the full extent of the existing construction; cut foundation posts one foot minimum below ground level. Backfill to level with adjacent ground. Disassemble wood members, and break up above-grade concrete if any, as required for complete removal.

3.03 BURNING. Stockpile non-burnable materials such as metal, plastics, and pressure-treated wood for disposal off-site. Non-pressure treated wood may be burned. Remove all metal fasteners prior to burning for disposal offsite. Inform Petersburg Fire and Police Departments prior to burning. Burn in location approved by CO and only during weather and ground conditions that will prevent spread of fire.

During burning operations maintain a physical presence on site. When finished, ensure fire is extinguished by digging out and scattering hot spots, such as coals too hot to touch, within burn area. Do not scatter hot spot materials outside area impacted by burning. Apply water or backfill material as necessary to ensure area is completely cooled.

During site cleanup, gather and dispose of offsite any remaining metal fasteners and other non-biodegradable materials. Stockpile and dispose of offsite all unburned wood materials greater than 6” in diameter. Smaller wood materials may be incorporated into site while extinguishing hot spots.

3.04 BACKFILL. Fill to level foundation post holes and any depressions remaining after removal of structures as approved. Blend edges of fill with adjacent grade.

3.05 REVEGETATION. Replant reserved plant materials.

3.06 DISPOSAL. All demolished items and materials to be disposed of shall become the property of the Contractor. Remove and dispose of all demolished items and demolition materials off-site in accordance with all local, state, and federal laws, rules, and regulations.

SECTION 031000

AGGREGATE SURFACE AND CONCRETE STEP TRAIL

1.01 WORK. The work consists of preparing the trailbed, supplying materials for and installation of Aggregate Surface trail (AS), Aggregate Surface Pads (AS Pads), and government-provided Concrete Steps

(CS).

1.02 RELATED WORK

A. Section 013300 Submittals

B. Section 016000 Control of Materials

PART 2 - PRODUCTS

1.01 AGGREGATE SURFACING (AS) AND BEDDING MATERIAL (for CS).

A. For applications calling for aggregate surfacing and bedding material, provide 1-1/2” minus crushed rock, meeting the following gradation requirements:

Sieive Size

Passing

1.5” 100 1” 93 ¾” 84 ½” 61

3/8” 48 ¼” 34 #4 27

Provide a sieve analysis conforming to AASHTO T-11 and T-27, performed by a qualified testing lab showing results taken from stockpile sample.

B. For applications calling for crusher fines, provide irregular angular particles, size #4 to dust (typically a byproduct of rock crushing). Obtain approval of material by CO at rock source prior to transporting.

1.02 CONCRETE STEPS.

A. SOURCE. Transport precast concrete steps provided by Government, located approximately 8.5 miles south of Petersburg, AK at the Forest Service Tree Nursery, 845 Mitkof Highway. Contact Paul Olson at the Petersburg Ranger District (772-5947) to arrange access.

B. ARMOR ROCK FOR CONCRETE STEPS. Select stone to provide the general dimensions shown on the drawings. Stones to be sound and durable.

3.01 EXCAVATION. Excavate trailbed for AS trail to sufficient depth that allows for proper drainage of finished and compacted trail surface. See Drawings for specified gravel depths, treatment of live roots, and other details of execution.

3.02 SUBGRADE APPROVALS. Obtain Government inspection and approval after subgrade preparation is complete and before placement of aggregate or bedding. Do not place aggregate until subgrade is approved.

3.03 COMPACTION AND FINISHED GRADING

A. AGGREGATE SURFACING (AS). Compact with a vibratory plate compactor, two passes. Following final spreading, smoothing and compaction correct any irregularities or depressions that develop by adding or removing material until the surface is smooth and uniform.

B. CONCRETE STEPS (CS). Compact bedding material by hand tamping until no noticeable displacement is observed.

3.04 ACCEPTANCE AND TOLERANCES

A. DEPTH. Provide the minimum compacted thickness of aggregate surfacing shown In the Drawings. If excess aggregate has been delivered to the work area it may be stockpiled in approved locations or spread evenly over the trail; the method to be approved and at no cost to the Government.

B. WIDTH. Do not vary the aggregate width by more than ± 2 inch from the specified width or place it consistently narrower or wider than the specified width.

SECTION 033000

CAST-IN-PLACE CONCRETE

A. Work includes supplying and installing cast-in-place concrete, including formwork and reinforcement, for Metal Stair footings. May also include concrete footings or foundation. For concrete work specific to cabin and outhouse construction, contractor’s stamped drawings and specifications approved by CO under this contract supersede this section if different.

1.02 REFERENCES

A. ACI 301 - Structural Concrete for Buildings.

B. ACI 304 - Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

C. ACI 308 - Standard Practice for Curing Concrete.

D. ACI 318 - Building Code Requirements for Reinforced Concrete.

E. ASTM C150 - Portland Cement.

F. ASTM C260 - Air Entraining Admixtures for Concrete.

1.03 QUALITY ASSURANCE

A. Perform work in accordance with ACI 301.

B. Acquire cement and aggregate from the same source for all work.

C. Use only 1 brand of cement and admixtures unless otherwise approved in writing by the CO.

A. Form Facing Materials. Plywood, metal, or other suitable material of size and strength to resist movement during concrete placement. Use straight forms, free of defects. Use flexible spring steel forms or laminated boards to form curved edges if any.

B. Rebar. Furnish reinforcement complying with ASTM A615 Grade 60.

C. Post Brackets

1. As specified in the Drawings.

D. Provide a High Strength pre-blended mixture of cement and aggregates requiring only the addition of water that meets the requirements of ASTM C387. Provide at least one of the following specific products or approved equal:

1. Sakrete High Strength Concrete.

2. Quickrete Concrete Mix Product No. 1101.

E. Water: Provide water for mixing meeting the requirements of ASTM C 94/C 94M or as approved. The nearby “Pond” shown in the Drawings is a muskeg pond that varies in depth depending on weather, and may or may not be a reliable source of clear and clean water.

F. Air Entraining Admixture: ASTM C260 G. High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F H. Synthetic Macro Fiber Reinforcement: Strux BT50, or Novomesh 950, or approved equal.

I. Do not use admixtures which contain calcium chloride or other chloride-based ingredients.

J. Form Release Agent: Colorless material which will not stain concrete, absorb moisture or impair natural bonding or color characteristics of coating intended for use on concrete; Release #1, or Crystal Release as manufactured by Burke Concrete Accessories or approved equal.

2.02 CONCRETE MIX

A. Schedule - Concrete Types and Finishes: Proportion concrete in accordance with ACI 318.

The strength of concrete (fc’), air entrainment, and slump shall meet the requirements below:

Unit Requirement Compressive Strength (fc’) (28 day) 4,000 psi Air Entrained 4.5% - 7.5% Slump (±1 inch) 5”

Proportions of aggregate, cement, water, and admixtures shall be such to result in a dense workable mix which can be placed without excess surface water. Submit a mix design, with recorded cylinder test results, for review and approval prior to mobilizing concrete equipment to the site. Mix design to include maximum water:cement ratio, the amount of air entraining admixture, the amount of water-reducing admixture, and the amount of fiber reinforcement.

B. Temperature Limits for Cold Weather Concrete. Provide concrete having a minimum temperature of 50ºF and a maximum temperature of 90ºF at the time of placing. The temperature of the mixing water shall not exceed 140ºF. If aggregates are heated, heat uniformly with steam or water coil. Aggregate temperature shall not exceed 95ºF. Aggregate water mix temperature shall not exceed 80ºF. Do not use materials containing frost or icy lumps.

3.01 MIXING

A. Project Batched and Mixed.

1. Batch and mix at project site.

2. Methods and apparatus used to batch the design mix will be reviewed for approval by the CO.

3. Mixer rated capacity not to be less than a 1 bag batch. Batch quantities requiring fractional bags will not be allowed.

4. Mix concrete a minimum period of 1-1/2 minutes after all materials are in the drum.

B. Hand Mixed.

1. Hand mixing on site is allowed. Batches not to exceed 1/2 cubic yard in volume.

3.02 MIX ADJUSTMENTS

A. After the mix period but no later than 15 minutes from start of mixing, water may be added once for purposes of acquiring minimum slump, provided specified water-cement ratio is not exceeded. Adding water beyond these conditions constitutes re-tempering which will not be allowed. When water is added, an additional 20 revolutions at mixing speed is required.

B. Air-entraining admixtures shall not be added after the start of mixing for purposes of acquiring minimum air content.

3.03 FORM PLACEMENT

A. Place concrete forms on suitable compacted backfill material in such a manner to obtain a stable, level, and accurately located footing. Provide backfill materials as specified in Section 312000, Part 2, 2.01 Materials.

3.04 CONCRETE REINFORMCEMENT

A. Lap reinforcing steel 50 bar diameters unless otherwise noted. At corners add corner bars at each horizontal bar with leg length at least 50 diameter lap length or extend the horizontal bars with a 90 degree hook with a 50 diameter lap length.

B. Reinforcing shall be supported and secured in place prior to concrete placement using well-cured concrete blocks or approved plastic chairs. Welding of reinforcing is prohibited unless specifically noted. Provide minimum cover at reinforcing bars as follows: cast against earth 3 inches, exposed to earth or weather 2 inches.

3.05 CONCRETE PLACEMENT

A. Notify CO a minimum of 24 hours prior to placement.

B. Convey concrete from a mixer to the forms as near final position as practical in a manner which will prevent segregation or loss of materials.

C. Place concrete in maximum 18-inch horizontal layers.

D. Immediately after placing, thoroughly hand tamp or "spud” concrete.

E. Place each footing section in a continuous operation.

F. Do not drop concrete freely from higher than 4 feet above the surface of concrete being poured.

G. Do not place concrete in water or allow water to rise over freshly placed concrete until a set is sufficient to prevent damage.

3.05 PROTECTION FROM RAINFALL. Protect flat work during periods of precipitation with adequate waterproof covering. Support covering so that finishing may be performed and initial set obtained without damage. Dragging of tarpaulins or other covering across unset concrete will not be permitted.

3.06 CURING. Commence curing and protection of concrete immediately after placing. Cure Type I and Type II Portland Cement 7 days continuously and Type III Portland Cement 3 days continuously by water Curing. Keep all surfaces of concrete and forms left on concrete wet. Shade concrete from sun with covering material or with sand or sawdust on slab, except during periods of required finishing.

3.07 COLD WEATHER CONCRETE CURING. When descending air temperature at the project falls below 40ºF the Contractor may at their option, continue concreting under conditions stated below. Normal concreting operations may resume when the temperature at the site exceeds 40ºF.

A. Provide cover and heating equipment sufficient to maintain the temperature of the concrete at not less than 50ºF for a period of 3 days for Type I…