Supply and Spreading of Shredded Wood Fiber Safety Surface to a Compacted 812" Depth. Shredded Wood Fiber Refers to Clear C

TO: Prospective Bidders

FROM: Lisa Alderson, Contracts and Procurement Supervisor

SUBJECT: Addendum No. 1 Bid No. B39-120 MATOCs for Installation of Playground Equipment, Exercise Equipment and Site Amenities

DATE: November 19, 2018

This addendum provides a clarification to the solicitation, a revised specification, and the sign-in sheet from the pre-bid meeting. Deleted text is shown in strikethrough and new text is shown in italics and bold.

MISCELLANEOUS

1. The first paragraph in Part I, Section 25. Evaluation of Bids is revised as follows:

The contract awards resulting from this solicitation shall go to the lowest responsive Bids received from and responsible Bidders, unless the Commission determines that awarding the solicitation is not in its best interests. The Commission intends to make multiple awards award a minimum of three (3) contracts as a result of this solicitation.; additional contracts may be awarded if the Bids are deemed to be competitive and are submitted by Bidders determined to be responsible.

SPECIFICATIONS

1. Paragraph 3 of Section 740R has been revised as follows:

Supply and Spreading of Shredded Wood Fiber Safety Surface to a compacted 812" depth. Shredded Wood Fiber refers to clear chipped wood only (no softwood), and shall not include shredded bark, mulch, leaves, or branches. The product shall be an engineered product, with no artificial additives, such as “Woodcarpet” manufactured by Zeager Brothers, or an approved equal. Submit test results indicating compliance with ASTM impact criteria for fall safety and ADA criteria for accessibility. A sample of the wood fiber and test results shall be submitted for approval to the Construction Manager prior to installation. No wood fiber shall be spread without approval of the sample. Wood fiber shall be spread evenly by hand held rakes and compacted, in accordance with manufacturer’s recommendations. The top of the wood fiber shall be one uniform level, and at an 8 a 12-inch minimum compacted depth under the equipment and covering the top of equipment footings. A Fibardrain system (or equal) shall be installed under the wood fiber and be installed per the detail on the drawing. Once drainage is installed, Bid No. B39-120 1 Addendum No. 1 Playground Installation MATOCs November 19, 2018 install the engineered wood fiber in layers, 4- 6-8” at a time. Rake, level and wet the surface before compacting with a mechanical compactor after each layer is installed. Change direction 90 degrees between each layer. Repeat these steps until the 8 12 inch depth is achieved.

The revised specification is attached to this addendum.

All other terms and conditions of Bid No. B39-120 remain unchanged. Please sign below as acknowledgment of receipt of Addendum No. 1 and include with your bid.

Signature:

Print Name:

Firm:

Address:

Date:

Attachments: Section 740R – Installation of Playground and Playground Equipment, Rev. Nov. 2018 Pre-Bid Meeting Sign-In Sheet

Bid No. B39-120 2 Addendum No. 1 Playground Installation MATOCs November 19, 2018 SECTION 740R – INSTALLATION OF PLAYGROUND AND PLAYGROUND EQUIPMENT

1. Mobilization, Existing Conditions and Site Preparation: Mobilization consists of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; for the establishment of offices, building, and other facilities necessary for the work; for premiums on bond and insurance for the work; and for other operations performed or costs incurred before the beginning of work.

The Contractor shall set up construction facilities in a neat and orderly manner within designated or approved work areas. All labor and equipment necessary to accomplish the work as specified shall be supplied. Contractor shall conform to applicable requirements in the GENERAL CONDITIONS, including but not limited to, (1) required notifications, (2) protection of surveying monuments and other markers, (3) temporary traffic control, (4) temporary utility connections, (5) protection of property, and (6) pollution control.

When listed in the proposal as a separate pay item, payment for mobilization will be made on a lump sum basis.

The Contractor is responsible for verification of existing site conditions. All proposed dimensions are approximate. Proposed improvements shall be staked out, by the Contractor, prior to installation, and approved by the Commission Construction Manager. Contractor shall also identify and mark the location of all existing utilities prior to beginning work. The Contractor shall be fully responsible for any and all damages, which may be occasioned by failure to locate and preserve any and all utilities.

All work shall conform to requirements of the local soil conservation district and all applicable statutes, ordinances, regulations, laws and codes. The Contractor shall obtain all permits necessary for construction. All construction operations shall occur within times specified by local codes. Install all tree protection and erosion control measures prior to the start of any construction activity or deliveries to the site. The Contractor shall have staff on site at the time of all material deliveries to direct unloading and ensure that materials are stockpiled in acceptable locations.

All plant material existing on site is to remain unless otherwise indicated. Existing trees to remain shall be protected with 4’ height welded wire fence as necessary or with 6’ height chain link fence where indicated, and shall not be damaged during construction. Materials and equipment shall not be stockpiled under trees or on existing root systems. Contractor(s) will be responsible for replacement of any damaged trees. All work and related activities shall occur within the designated limits of work.

______Section 740R – Playgrounds 00740R -1 November 2015; Rev. Nov. 2018 Bid No. B39-120 Addendum No. 1 Maintain existing grades within critical root zones of existing trees, unless otherwise indicated on drawings. Where grading work or trenching is required within critical root zones of existing trees to remain, meet with the County Arborist on site to review the proposed work prior to performing the work. Only remove those roots which interfere with construction. Cut roots with sharp pruning instruments or saws; do not break or chop roots. If roots are exposed for more than 24 hours, provide temporary earth cover or pack with moist peat moss and wrap with burlap. Water as required to maintain a moist condition until permanent backfill is installed.

During the course of construction, the Contractor shall provide temporary barricades as required for protection of the project work, traffic control and public safety. The Contractor shall maintain public access routes through the park during construction. The Contractor shall keep vehicular access areas, driveways and other paved areas clean and free of mud on a daily basis during construction. The site shall be kept clean and free of trash at all times during construction.

In addition to standard safety precautions to be taken as indicated in the “General Specifications, Contractor shall erect a portable chain-link fence around any and all construction areas. This fence shall be a minimum 6’ height above ground, and shall be closed and locked whenever Contractor leaves the site, for any reason, or for any amount of time. Fence shall be staked (concrete block) at maximum 12’ intervals and shall include all the connecting hardware. Fence shall be maintained daily. Contractor will also place “Keep Out – Playground Under Construction” signs as needed around the construction area (minimum 3 per individual area).

The Contractor shall strip and stock pile the top soil, excavate areas as detailed on the plans for installation of play surface and drainage materials, grade the excavated area to a uniform 1-2% slope, as indicated on the drawings, remove any rocks (1" diameter and over), debris, roots, vegetation, etc. from the playground area, scarify the exposed subgrade, bring to optimum moisture content, and roll with a sheep foot roller (10 ton only) to 95% of a maximum density, as per ASSHTO T99. If there are areas that cannot be accessed by the roller, a vibrator or hand tamper may be substituted. It shall be the responsibility of the Contractor to see that no objectionable materials as listed above are left under the playground safety surface.

All stockpiles must comply with local codes and regulations. Stockpiles shall not exceed 35' ht. above existing grade or a 2 foot horizontal to 1 foot vertical side slope. All stockpiles shall be stabilized immediately after its establishment and for the duration of the project. Stockpiles shall be contained by straw bales or erosion control fencing as required and covered with plastic or canvas at the end of each work day for the duration of the project. All surplus topsoil and woodchips remaining at the completion of construction shall be removed from the site by the contractor and delivered to the Commission’s Pope Farm for composting. ______Section 740R – Playgrounds 00740R -2 November 2015; Rev. Nov. 2018 Bid No. B39-120 Addendum No. 1

2. Playground Installation Install all the equipment and site amenities per the manufacturer’s details, specifications, and supervision. Refer to the plans and shop drawings for the exact configuration of each structure and the placement within the playground.

The footings, for all equipment shall be 6-1/2 bag mix, 3,500 psi Class A concrete. The footings dimensions shall be a minimum 42" below grade (refer to Detail 2). The top of the footings shall be backfilled with 4" clean dirt, and this elevation will be the top of the subgrade on which the wood chips shall be spread by the Contractor.

All playground equipment and layout of the structures, play surface, edging and other site features (benches) shall be installed per the manufacturer’s specifications and shall comply with the most current versions of the following standards, guidelines, and regulations: the U.S. Consumer Product Safety Commission’s “Handbook for Public Playground Safety”; American Society for Testing and Materials F1487 “Standard Consumer Safety Performance Specification for Playground Equipment for Public Use; and the 2010 Americans with Disabilities Act, Standards for Accessible Design. Safety zones will be indicated on the plans for each project and shall be maintained at all times. Violation of these safety zones will be cause for rejection of the work. The footprint of the equipment ordered shall fit the footprint of the equipment as shown on the plans.

The Contractor shall survey and stake the layout of all edging, play equipment, play equipment use zones and other site features in the field prior to construction to ensure that equipment clearances and safety zones are adequate. Layout may be modified slightly during field review. Stakes shall remain in place during construction as guides for the finished work.

Provide permanent markings on all posts to indicate proper level of playground safety surface for future maintenance purposes. Provide weepholes or other means for evacuation of entrapped water in hollow sections of metal members as necessary.

3. Supply and Spreading of Shredded Wood Fiber Safety Surface to a compacted 12" depth. Shredded Wood Fiber refers to clear chipped wood only (no softwood), and shall not include shredded bark, mulch, leaves, or branches. The product shall be an engineered product, with no artificial additives, such as “Woodcarpet” manufactured by Zeager Brothers, or an approved equal. Submit test results indicating compliance with ASTM impact criteria for fall safety and ADA criteria for accessibility. A sample of the wood fiber and test results shall be submitted for approval to the Construction Manager prior to installation. No wood fiber shall be spread without approval of the sample. Wood fiber shall be spread evenly by hand held rakes and compacted, in accordance with manufacturer’s recommendations. The top of the wood fiber shall be one uniform level, and at a 12-inch minimum compacted depth under the equipment and covering the top of

______Section 740R – Playgrounds 00740R -3 November 2015; Rev. Nov. 2018 Bid No. B39-120 Addendum No. 1 equipment footings. A Fibardrain system (or equal) shall be installed under the wood fiber and be installed per the detail on the drawing. Once drainage is installed, install the engineered wood fiber in layers, 6-8” at a time. Rake, level and wet the surface before compacting with a mechanical compactor after each layer is installed. Change direction 90 degrees between each layer. Repeat these steps until the 12 inch depth is achieved.

4. Supply and Installation of Underground Drainage System to catch and direct runoff to drainage pipe. The FibarDrain (or approved equal) baffled, poly drain system (minimum flow rate of 10 gpm/ft.) shall be wrapped in filter fabric. The filter fabric shall be polypropylene, 3.5 oz/sq. yd. minimum (ASTM D-3776), 28 mil thick (ASTM D- 1777), puncture resistance 60 lbs. (ASTM D-4833), permeability 0.40 cm/sec (ASTM- 4491) minimum, or approved equal. Bidder shall provide enough material to allow for twelve (12) inches overlap on all seams and three (3) inches collar on all edges. An alternative to the FibarDrain system is to install a 4” minimum depth layer of washed river gravel under the entire safety surface. Subgrade at the bottom of the gravel bed shall be sloped toward the under drain pipe. Gravel shall be wrapped completely in filter cloth, with a minimum 12” overlap. The drainage stone shall be ASTM #67 size washed stone or approved equal supplied from local source, free of hazardous contaminants, meeting the following gradation analysis:

Sieve Size Specification

1-1/2” 100 1” 100

Gravel shall be wrapped completely in filter cloth with a minimum 12” overlap.

5. Supply and Installation of 4” Diameter Perforated Drainage Pipe with Gravel Bedding The drain pipe shall be high density polyethylene, corrugated on the inside and outside, four (4) inches I.D. (ASTM F-405), either perforated or plain as specified on the detail, or approved equal. The filter fabric shall be polypropylene, 3.5 oz/sq. yd. minimum (ASTM D-3776), 28 mil thick (ASTM D-1777), puncture resistance 60 lbs. (ASTM D-4833), permeability 0.40 cm/sec (ASTM-449) minimum, or approved equal. Bidder shall provide enough material to allow for twelve (12) inches overlap on all seams and three (3) inches collar on all edges. The drainage stone shall be ASTM #67 size washed stone or approved equal supplied from local source, free of hazardous contaminants, meeting the following gradation analysis:

Sieve Size Specification

1-1/2” 100 1” 100

______Section 740R – Playgrounds 00740R -4 November 2015; Rev. Nov. 2018 Bid No. B39-120 Addendum No. 1

Gravel shall be wrapped completely in filter cloth with a minimum 12” overlap.

6. Site Clean-Up and Restoration Upon completion of construction, all disturbed areas including but not limited to play and site amenity areas, are to be restored to their former state up to the boundaries of the new construction. This is to include all backfilling and compacting to former or new grades, materials, equipment, etc., to their original condition (by replacement, if necessary) fine grading, sod, sod staking, seeding of restored grades, site clean-up and debris disposal, and watering. See Seeding and Sodding Specifications.

Promptly repair any damage caused by construction operations to existing pavement, driveways, and other facilities to the satisfaction of the Commission Construction Manager. Upon completion of the project, the Contractor shall remove from the site all excess soil, stone, temporary fencing, mulch, and all other debris and materials and shall dispose of these materials off site legally. All paved areas, curbs, playground equipment, etc. shall be thoroughly washed and cleaned upon completion of project.

______Section 740R – Playgrounds 00740R -5 November 2015; Rev. Nov. 2018 Bid No. B39-120 Addendum No. 1