A04_SOW_Helical_Anchor_Installation_RV1_0001.pdf

Statement of Work

Kobayashi Dock Helical Anchor Installation

STATEMENT OF WORK

The Dillon Field Office needs to install 4 helical type anchors to stabilize the dock at Kobayashi Beach

(see Attachment 1 for vicinity map). The dock is comprised of (3) 20’ sections. The helical anchors will be installed at the ends of the second and third sections of dock (see Attachment 6 for site photo). The lake depth at the installation site ranges from 6-9’ in depth.

1. GENERAL INFORMATION

1.1 The successful vendor will be responsible for installing (4) helical anchors each with a working load limit of 2,650#. They should each be proof tested to 5,300# minimum.

1.2 The successful vendor will provide means for attaching 3/8” Grade 30 Proof Galvanized Coil

Chain (see Attachment 2 for chain specifications).

1.3 The successful vendor will assure that the final installed attachment point for the chain is between 12-18”above the lake bed elevation.

1.4 Submittals: The successful vendor will submit the following for approval to the Government at the Dillon Field Office.

a. Drawing/ design of attachment point for grade 30 proof coil chain.

2 DESCRIPTION OF WORK

2.1 Helical Anchor Installation- Currently there are 2 sections of dock installed for a total of

40’. BLM workers will install the third 20’ section of dock at which point the contractor will either utilize the dock as a work platform to install the anchors or provide means to perform work from an alternate platform provided by the contractor. See attachment 3 for existing dock static and live load limits. See Attachment 4 for soil structure of Ennis Lake Bottom. Helical anchors will need to be installed at an angle such that the attachment chains will pull in line with the helical pier preventing the pier from being subject to a side load causing it to bend (see

Attachment 5 showing approximate angle of helical pier installation).

2.2 Attachment cap for helical anchor- Once installed, the contractor will be responsible for providing a “cap” to be installed by BLM that will accept chain with specifications provided in attachment 2. Contractor is responsible for providing all hardware for cap to helical connection.

Contractor is responsible for instructing BLM workers on how cap/ chain connection installs to helical pipe.

3 EXECUTION

3.1 Contractor shall remove all rubbish and debris off the project site upon completion of the project and shall provide daily clean-up of the work areas.

3.2. Contractor shall work normal hours (0800-1700), Monday thru Friday, unless otherwise approved by the Government. Work outside of office hours is encouraged but only as approved by the Government.

3.3. Contractor will supply all tools and equipment necessary to perform the stated work.

3.4. Government representatives are available should the prospective contractor request a site visit, or, a video walk through can be conducted.

3.5. BLM will be responsible for all permitting required to perform the above stated work.

3.6. The prospective contractor will ensure that all anchors meet the load specifications listed in the General Information above. The contractor will ensure that appropriate tolerances are met per the manufacturer’s instructions. The prospective contractor will be required to warranty their work for a period of 1 year.

3.7. Contractor is responsible for protecting the dock surface from any adverse effects of equipment, tools, and supplies used during the installation.

3.8 Spill Containment for any equipment used in the lake.

4. BASIS OF PAYMENT

4.1. Payment: Lump Sum-one cost for all work paid in whole upon completion and inspection of project by Government.

5. TIMING

5.1 The contractor shall begin performance within 10 calendar days and complete the project within 65 calendar days after receiving the notice to proceed. Work shall not extend beyond the period of performance end date listed in the contract.

Attachment 1:

Attachment 2:

Attachment 3:

Attachment 4:

Ennis Lake's bottom is likely comprised of gravelly, alluvial sediments, derived from limestone, shale, and sandstone. These sediments formed in a floodplain or narrow drainage channel environment, leading to slopes ranging from 0 to 5%. The area also contains a mix of pebble to boulder-sized gravel, along with sand, silt, and clay, according to the Montana Bureau of Mines and Geology. The lake bottom likely contains compacted gravel with multiple layers of clay, sand, and silt, according to the Montana

Department of Natural Resources.

Attachment 5:

https://www.google.com/search?rlz=1C1GCEA_enUS1023US1023&cs=0&sca_esv=36ac96dba69ebed1&sxsrf=AE3TifMaqyHWP0CLm1ysoZQ3GQp1Z1cbeA%3A1748381551244&q=gravelly%2C+alluvial+sediments&sa=X&ved=2ahUKEwj-2fvpzMSNAxVKPUQIHb3WA20QxccNegQIAhAB&mstk=AUtExfBuId-RBILnIkgb3piIm3V6WC3oXhOnBfdWy9h9-SSRgsT34_sW6ezZIAmJ4Y5OI3ULk5yWX9gbqyNcPxRdQl0frNVrl4P8r-HlKgwrfGl1J4mfGkuKkiYIZ29h_P6tNr15_78E8UYC6-O8aigyKSv3bm-QvWSvJKVTLCMHtYtzICo&csui=3

Attachment 6: