Exhibit A.1 to Sample Contract_Specifications.docx

Exhibit A – Specifications

OREGON STANDARD SPECIFICATIONS FOR CONSTRUCTION. The 2024 Oregon Standard Specifications for Construction (“Standard Specifications”) include detailed specifications in Part 00200 and beyond (“technical specifications”) that apply to this Project. Some sections of the technical specifications are identified and modified in the Special Provisions below. Sections of the technical specifications not identified in the Special Provisions remain applicable to the Contract according to their original terms.

Sections 00120-00199 in Part 00100 of the Standard Specifications are not applicable to the Contract; however, if a section in Part 00100, Section 00120—00199, that has been identified as being applicable references another section in Part 00100, or if a technical specification references a section from Part 00100, that section from Part 00100 applies to the Contract for purposes of supporting and giving full effect to the specification that referenced it. Abbreviations, definitions, and conventions in Part 00100, Section 00110, apply to the ITB and any resulting Contract as required for context within the Contract document. The Standard Specifications can be accessed online at:

http://www.oregon.gov/ODOT/Business/Pages/Standard_Specifications.aspx

SPECIAL PROVISIONS

TABLE OF CONTENTS FOR SPECIAL PROVISIONS

SECTION 00210 - MOBILIZATION

Comply with Section 00210 of the Standard Specifications.

SECTION 00290 - ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications.

SECTION 00305 - CONSTRUCTION SURVEY WORK

Comply with Section 00305 of the Standard Specifications.

SECTION 01030 - SEEDING

Comply with Section 01030 of the Standard Specifications modified as follows:

01030.00 Scope - Add the following to the end of this subsection:

The seeding Work is supplemental to a previous seeding application. The Work will include over-seeding on areas to meet coverage requirements according to 01030.60 as necessary.

01030.13(f) Types of Seed Mixes - Add the following to the end of this subsection:

Provide the following seed mix formulas:

Permanent Seeding Mix No.1:

Agrostis exarata (Spike Bentgrass) 0.5

Beckmannia syziganche (Sloughgrass) 2.0

Camassia leichtlinii (Tall Camas) 0.5

Carex obnupta (Slough Sedge) 1.5

Deschampsia cespitosa (Tufted Hairgrass) 0.5

Hordeum brachyantherum (Meadow Barley) 1.0

Lupinus Polyphyllus (Large-leaf Lupine) 0.25

· Permanent Seeding Mix No. 2:

Achillea millifolium (Western Yarrow) 0.1

Bromus carinatus (California Brome) 15.0

Camassia leichtlinii (Tall Camas) 0.5

Clarkia amoena (Farewell to Spring) 0.2

Danthonia californica (California Oatgrass) 1.5

Elymus glaucus (Blue Wildrye) 1.5

Eriophyllum lanatum (Oregon Sunshine) 0.1

Madia elegans (Elegant Tarweed) 0.1

Prunella vulgare lanceolata (Lance Selfheal) 0.25

Sidalcea campestris (Checker Mallow) 0.5

Lawn Seeding:

Lolium perenne var Buena Vista 65.0 Buena Vista Ryegrass

Lolium perenne var Fusion 65.0 Fusion Perennial Ryegrass

Lolium perenne var Overdrive 58.0 Overdrive Perennial Ryegrass

01030.17 Pesticides ‑ Add the following to the end of this subsection:

Do not apply herbicides that include any herbicide carrier (i.e. solvent) other than water or vegetable oil. Utilize only the following herbicides for Project Work:

aquatic imazapyr aquatic glyphosate aquatic triclopyr-TEA chlorsulfuron clopyralid imazapic imazapyr metsulfuron-methyl picloram sethoxydim sulfometuron-methyl

Apply only the herbicide adjuvants described in Table 01030-1 for Project Work.

Table 01030-1

01030.42 Weed Control - Add the following paragraph and bullets after the paragraph that begins "If a pesticide has been approved for…" and before subsection (a):

The Specified Weeds and plant species to be removed include the following:

Removal of all Weeds which are listed on the Oregon Department of Agriculture (ODA) A and B Weed species list. ODA website is at;

http://www.oregon.gov/ODA/programs/Weeds/OregonNoxiousWeeds/Pages/Law.aspx.

Removal of all other vegetation that is not a native endemic species which are considered undesirable to the Project location.

The Weed Management Area (WMA) is comprised of all areas of planting installations.

01030.42(c)(1) All Areas - Add the following bullets to the end of the subsection:

Clear all vegetation from a 2-foot diameter area around each plant during the first two years of the Plant Establishment Period.

No non-native tree or shrub species may be present within the WMA after the five-year Mitigation period.

Provide date stamped photographs clearly showing the site after each weed treatment and removal. Photographs must show at least, but not limited to, medium range snapshots and show at least three, but not limited to, photographs on each side of the river to clearly demonstrate Weed-free ground plane.

Add the following subsection:

01030.42(e) Herbicide Application ‑ Obtain written approval from the Engineer prior to application of herbicides in sensitive areas. Apply herbicides at the lowest effective label rates. Mix herbicides a minimum of 150 feet away from natural water bodies. Wash spray tanks a minimum of 300 feet from any natural water body. Utilize a non-hazardous indicator dye during herbicide applications within 100 feet of natural water bodies. Keep spray nozzles as low as possible and utilize the largest droplet size possible in order to minimize drift. Provide documentation of wind speed and direction, air temperature, ground temperature, and date of application to the Engineer within 5 Days of broadcast herbicide applications.

Do not apply herbicides during the following conditions:

When soil is saturated, except for soil-activated herbicides.

Within 48 hours prior to and during a forecasted rain event of 0.5 inches or greater in a 24-hour period.

When wind speeds exceed 10 miles per hour, or are less than 2 miles per hour.

During temperature inversions.

When ground temperatures exceed 80 °F.

Adhere to the adjuvant application limitations in Table 01030-2. Regulated work area (RWA) is defined in 00290.34(a).

Table 01030-2

During herbicide application, adhere to the buffer distance requirements in Table 01030-3.

Table 01030-3

Labeled for Aquatic Use

Low Risk to Aquatic Organism

Moderate Risk to Aquatic Organism

High Risk to Aquatic Organism

01030.44 Fertilizer - Delete this subsection, except subsection number and title.

01030.48 Application - Replace this subsection, except subsection number and title, with the following paragraphs:

Overseeding is to be sown on bare soil where mature, existing grasses are greater than 1 foot apart. Overseeding Work will omit soil preparation, fertilizing, any amendments and mulch. Overseeding application method may be applied by manual or light equipment method.

Install permanent seeding, mix no. 1 on areas below the 104 elevation.

Install permanent seeding, mix no. 2 on areas above the 104 elevation.

01030.90 Payment - Delete Pay Items (l) and (m) from the Pay Item list.

Add the following:

Partial payment for weed control will be made as follows:

· After approval of initial weed removal to prepare for planting installation ………………….…………...…….......................... 35%

· 6 months after initial weed control….………...……............................ 25%

· 12 months after initial weed control.…………...……............................ 10%

· 18 months after initial weed control.…………...……............................ 10%

· 24 months after initial weed control.…………...……............................ 5%

· 36 months after initial weed control.…………...……............................ 5%

· 48 months after initial Weed control.…………...……............................ 5%

· 60 months after initial Weed control.…………...……............................ 5%

SECTION 01040 - PLANTING

Comply with Section 01040 of the Standard Specifications modified as follows:

01040.00 Scope – Add the paragraph to the end of the subsection:

The duration of Work described as the Plant Establishment Period is five years.

01040.04(a) Planting Work Plan – Replace the bullet that begins "Plant installation and…" with the following bullet:

Plant installation

Add the following bullet to the end of the bullet list:

· Plant establishment plan according to 01040.70.

01040.04(b) Notice for Inspections – Replace this subsection, except subsection number and title, with the following paragraph:

Notify the Agency at least 10 Calendar Days prior to plant installation and for all inspections.

Add the following subsection:

01040.05 Submittals – Submit the following for review and approval:

Contract Growing Plan according to 01040.19(g).

Planting work plan according 01040.04(a).

Plant establishment plan according to 01040.70.

Weed Control Work Plan according to 01030.42(a).

Photo log 10 Days after each plant establishment visit and periodic inspection. Date stamped photographs in photo log of each plant establishment site visit with photos of multiple individual plants, seeded areas, and weed control areas, sufficiently close as to display plant condition and that are representative of the health, vigor and growth of the site plantings.

01040.19(d) Inspection – Replace the sentence that begins with “Notify the Agency…” with the following sentence:

Notify the Agency of each date and time for delivery of plants to the Project Site a minimum of 10 Calendar Days ahead of delivery.

01040.19(g) Contract Growing Plant Materials - Add the following paragraphs to the end of this subsection:

This Project requires a contract growing agreement.

Contract for growing specified plantings, as necessary. Provide written verification within 30 Calendar Days after the date of Notice to Proceed that a Contract growing plan is executed or stating all specified plantings will be furnished. The written verification must describe plant Material size at delivery, growth environment, and name and location of nursery.

01040.22 Water - Add the following paragraph to the end of this subsection:

Water all installed plants during the period of June 15th through September 30th during the Plant Establishment Period to maintain plants in a state of good health and showing growth. Provide date-stamped, photo documentation of each water application throughout the Plant Establishment Period.

01040.70 General – Replace the paragraph that begins "The Contractor is responsible …" with the following paragraphs and bullets:

The Contractor is responsible for the survival of all plant material until the end of a Plant Establishment Period of 5 calendar years. The Plant Establishment Period will begin when all the original planting is complete. The original planting is considered complete when all the plant material has been planted to the satisfaction of the Agency.

At a minimum of 15 Days prior to landscape Work, submit a written plant establishment plan as part of the planting work plan according to 01040.04(a). Should the plan become unworkable at any time during Plant Establishment Period, submit a revised plan at least 10 Calendar Days prior to proceeding with further Work. Include the following in the plant establishment plan:

Activity descriptions necessary to ensure continued health and vigor of planted and seeded areas according to 01030.60 and 01040.71.

Proposed scheduling of joint inspection meetings, weeding, and watering/irrigation schedule.

Materials including herbicides and fertilizers, and Equipment to be utilized for the plant establishment.

Proposed adaptive management activities for successful establishment of seeded, sodded, and planted areas, during changing environmental conditions or unanticipated weather.

Include the watering schedule, proposed source of water, method for watering, and quantity of water applied to each tree and shrub according to 01040.54 and 01040.78

01040.71 Plant Care and Success Criteria – Replace the first bullet, beginning with “Watering and fertilizing…”, with following bullet:

Water all installed plants sufficiently during the Plant Establishment Period to promote growth and to maintain plants in a state of good health. During the period of June 15th through September 30th provide date-stamped, photo documentation of each watering application throughout the Plant Establishment Period of five years.

01040.72 Periodic Inspections ‑ Replace the paragraph beginning with “During the Plant Establishment Period…” and bullets with following paragraph and bullet:

During the Plant Establishment Period, the Agency will make two plant establishment inspections annually, over 5 years, jointly with the Contractor at the following times:

Spring, mid to late May Fall, mid to late September

SECTION 01050 - FENCES

Comply with Section 01050 of the Standard Specifications modified as follows:

Replace this subsection, except subsection number and title, with the following:

01050.50 Wildlife Fence - Provide shop drawings of wildlife Fence showing end treatments and connection materials.

(a) Concrete Footings - Construct concrete footings according to 01050.43(a)(3).

(b) Line Posts, Braces, End Posts, Corner Posts, and Gate Post - All post and brace components shall be metal. Do not use wood posts and braces.

Furnish top caps for round posts. Top caps shall be designed to fit securely.

Construct line posts using T-Posts. T-Posts shall be heavy duty hot rolled steel, 12 inches in length with the cross section shape of a T and weighing 1.33 pounds per linear foot. T-Posts shall have an edge deformed into studs that provide fastening clips with purchase so fence fabric remains secure. T-Posts finish shall be hot dipped galvanized (ASTM A123).

Install line posts without concrete footings.

(c) Braces - Install braces according to 01050.43(g)(1) and the following:

Braces are required at fence starts, ends, and changes of direction. A single straight run of fence requires an intermediate end post and brace at intervals of no more than 600 feet.

(d) Wildlife Fence Fabric and Wire - Install wildlife fence fabric and wire according to 01050.44.

Omit barbed wire from installation of woven wire fabric.

Install woven wire fabric at maximum of 2 inches above ground surface.

Add the following subsection:

01050.51 Removing and Salvaging Wildlife Fence - Wildlife fence, gates, footings and all associated accessory parts shall be removed no later than one-month after end of the five-year mitigation period.

All concrete footings shall be removed from the subsoil and footing holes filled with clean fill according to 00290.20(c)(2) and 0330.45.

Concrete footings and wood posts become property of the Contractor and disposed of according to Section 00290.

All other fencing components shall be sorted and bundled with like materials and delivered to the ODOT Newburg Maintenance Station, located at 730 N College Street, Newburg, Oregon 97312. Prior to delivering the fence Material contact the Engineer to coordinate delivery of the Materials. No later than one week prior to delivery of fence materials, Contractor will notify the Engineer to receive approval that materials are sorted and bundled satisfactorily.

Fence components shall be prepared before delivery as follows; Gates shall be delivered in fully assembled panels, T-Posts and round posts shall be stacked and tied in bundles and placed on pallets, mesh wire and brace rails shall be stacked on pallets and tied, tension wires shall be rolled and tied with plastic zip ties, all connectors such as turnbuckles, basebands, bolts and nuts and all other hardware components will be contained in five gallon buckets with lids.

01050.80(f) Removing and Rebuilding Fence – Replace this subsection with the following:

01050.80(f) Removing and Salvaging Wildlife Fence – Removing and salvaging wildlife Fence will be measured on the lump sum basis including Gates.

01050.90(d) Removing and Rebuilding Fence – Replace this subsection with the following:

01050.90(d) Removing and Salvaging Wildlife Fence – Removing and salvaging wildlife Fence will be paid at the Contract unit price on the lump sum for the item “Removing and Salvaging Wildlife Fence”.

SECTION 02510 - REINFORCEMENT

Comply with Section 02510 of the Standard Specifications modified as follows:

02510.11(c) Coated Reinforcement Ties and Supports ‑ Delete this subsection.

02510.11(d) Epoxy Coating Repair ‑ Delete this subsection.

02510.30(d) Ties and Support ‑ Delete this subsection.

02510.60 Wire Reinforcement ‑ Replace this subsection with the following subsection:

02510.60 Ties and Supports ‑ Provide tie wire and supports according to CRSI Manual of Standard Practice.

(a) Coated Reinforcement Ties and Supports – Provide nonmetallic coated ties and supports for coated reinforcement, including ties for coated-to-uncoated reinforcement connections.

(b) Uncoated Reinforcement Ties and Supports ‑ Tie all mats of galvanized steel bars with galvanized ties. Provide precast concrete blocks with galvanized ties that support galvanized reinforcement.