Addendum No.1 ITB 22-027-PW.pdf

July 14, 2022

ADDENDUM #1

Highland Dr Pump Station Construction

22-027-PW

This addendum modifies the bidding document(s) for work only to the extent indicated herein. All other areas not specifically mentioned or affected by this addendum shall remain in full force. This addendum shall be added as a part of the original bidding document and shall become part of the work required.

Addendum No. 1 consists of 4 numbered pages and the following:

1. Prebid Meeting sign-in sheet

2. Specification Section 00400 – Bid Form - REVISED

3. Specification Section 02910 – Temporary Tree and Plant Protection

CLARIFICATIONS – RESPONSES TO QUESTINS RECEIVED

Question 1: Please confirm that the MCC can be ordered in three separate “Splits”, or possibly incorporate a “Transom” over the door on sheet D-38375-S2; Details 1 & 4.

Response: The MCC is coming as one unit to avoid field splicing. The door opening will be increased in addendum 1.

The specifications already specify a removable transom.

Question 2: Is temp power available from the existing pump station, there appears to be a mini power center on the East side of the exterior on the building that could be a source, we would need a multipole lock hanger, which we could provide.

Response: EWEB will make temporary power available either through a temporary meter or from the existing pump station.

Question 3: 16050_1.10_B_1 shows underground as “PVC”; E500 calls for PVC/GRC for all underground which is correct?

Response: The notes on E500 which require PVC coated rigid conduit only refer to the conduits to and from the VFDs.

All buried conduits outside of the slab are to be PVC as specified in 16050.

Question 4: There is no size or quantities for conduit(s) P100 on sheet E500. Assuming 2-3” PVC, please confirm.

Response: Parallel 3” conduits will be required for P100.

Question 5: On sheet E100 there is not a vault called out under the new Transformer. Please confirm if there should be one and if it is OFCI, or CFCI.

Response: A 4’8” x 4’8” x 4’ EWEB standard vault is required and will be owner furnished contractor installed.

Question 6: Sheet E401 does not show a breaker in the MTS, but spec 16410_2.1_C_5_a & b require one. Please confirm if a breaker inside of the MTS is required.

Response: A breaker inside the MTS is required.

Question 7 - P130 calls for # 8’S for a 20-amp receptacle, please confirm this is a typo.

Response: No, this is not a typo, #8s are required due to the length of the conductor. However, per the note 1 under the Conduit and Wiring Schedule conductors are to be provided under a separate contract.

Question 8: E010 note 1 says demo is future, E100 says demo, which is correct?

Response: E010 is correct.

Question 9 – Are the tree stumps to be removed?

Response: No, the stumps can stay. The trees should be cut at 18” above grade, branches and brush should be hauled off.

Question 10 – What is the scope of EWEB’s piping work and when will it be complete?

Response: EWEB is installing new 8” and 12” water distribution piping in Highland Dr from the existing pump station site to the intersection of Highland Dr and Woodland Dr. EWEB will provide excavation, backfill, and surface restoration for the conduits that run from the new pump station to the existing pump station site. The work will be coordinated with the successful bidder and is anticipated to start in late August.

Question 11 - The drain system piping is specified as Schedule 80 PVC in spec section 15100, 2.02, C but the notes on plan sheet D-38375-C2 call for D3034. Which will be required?

Response: The sheet notes specifying D3034 for buried drain pipe will remain. Miscellaneous Drainage (D) listed in the pipe schedule of Specification section 15100, 2.02, PIPE TYPE C – POLYVINYL CHLORIDE PRESSURE PIPE AND FITTINGS will be required for exposed and buried drain piping within the new pump station.

Question 12 - Plan sheet D-38375-C2 has a note with arrows to the drain calling out ‘4” PVC FOUNDATION DRAIN…’.

Is all of the pipe not noted as 6” lateral, 4” perforated, or where does the perforated foundation drain change to solid wall?

Response: The 6-inch lateral will extend from the City storm line to the outside edge of the proposed pump station foundation. All other drain piping is 4-inch in diameter. The perforated pipe is limited to the perimeter of the new pump station foundation. All other pipe is solid wall.

Question 13 - Plan sheet D-38375-C1 doesn’t show an material in the Flow meter vault. Do you just want 8” DI pipe laid through and you folks will take care of the meter etc? If so do you want the DI pipe primer coated or zinc/asphalt the same as buried pipe?

Response: The pipe is specified as W8DI on D-38375-C1 and listed in the pipe schedule of Specification section 15100, 2.02, PIPE TYPE W, buried and greater than 4”. The material requirements are stated in specification Section 02600, which requires zinc/asphalt.

Question 14 - The bid form section 00400, H, 5, a calls for substantial completion on December 31, 2022 and the owner furnished material in section 01640 doesn’t become available until February 2023 in some cases. Puts the contractor in a time bind.

Response: This was an oversight. April 29th, 2023, is the date of substantial completion and final completion will be May 29th, 2023.

Question 15 – There is not a specification for the flowmeter in the pump building. Can you steer me in the right direction to find it?

Response: The flowmeter will be owner furnished contractor installed.

Question 16 - You have the specification for the butterfly valves in spec section15200 as wafer and that you folks will supply and install the operators. Do you really want bare wafer butterflies in the Pump Building?

Response: We do not want bare wafer butterfly valves. We want AWWA C504 Rubber Seated Butterfly Valves epoxy coated in conformance with AWWA C550 and NSF62. EWEB will not be providing the operator, a handwheel shall be provided for butterfly valves inside the pump station in accordance with Specification Section 15200 Paragraph 2.02B.

Question 17 - The Pipe Schedule in Specification 15100-2 calls for Type F-1, B3 and G for water line (W) less than 4”.

Is this contractor’s choice or could you let me know what type of pipe you would like in which locations?

Response - This is the contractors choice based on availability to meet the project schedule and price.

TECHNICAL ADDENDUM ITEMS:

Item Number Page or Drawing Location and Description of Change

TECHNICAL

SPECIFICATIONS

1.01 00400 Replace Section 00400 with the revised Section 00400 included with Addendum 1.

1.02 Insert Section 02910 Temporary Tree and Plant

Protection after Section 02700.

1.03 15200 At Paragraph 2.03 Add “Rubber Seated” before “Butterfly Valves”

1.04 15200 At Paragraph 2.03J delete “owner furnished and installed and replace with “in accordance with this specification section”

1.05 15200 Add after Paragraph 2.03J “L. Coating shall be fusion bonded epoxy in accordance with AWWA C550 and NSF 61”

DRAWINGS

2.01 D-38375-G1 Under the Index of Drawings change sheet numbering “S1, S2, S3” to “S0, S1, S2”.

2.02 D-38375-G1 Under the Index of Drawings insert the following sheet numbers:

“E005 Electrical Details”

“E0101 Existing & Demolition Plan”

2.03 D-38375-G1 Under the Index of Drawings Delete the following sheet numbers:

“E600 VFD 1 & 2 Layout Diagram”

“E601 VFD 1 & 2 Enlarged Layout Diagram”

“E603 VFD 1 & 2 Schematic Diagram”

“E610 VFD 3 & 4 Layout Diagram”

“E611 VFD 3 & 4 Enlarged Layout Diagram”

“E613 VFD 3 & 4 Schematic Diagram”

2.04 D-38375-ESC1 Delete Tree Removal table in its entirety. Replace with the following.

Point Tree

3 36” Conifer

6 16” Conifer

6” Conifer

Item Number Page or Drawing Location and Description of Change

2.05 D-38375-ESC1 Add the following under the Tree Removal Table:

1. Protect all trees designated to be saved. Contact EWEB immediately if a tree or root conflicts with the work.

2.06 D-38375-C1 Delete the section 2/C3 call out.

2.07 D-38375-C1 Under Sheet Notes add after Note 4

“5. Install all pipe in accordance with the trench detail on C3.”

2.08 D-38375-S2 On Section 1, delete 7’4” door opening” insert “8’8” Door Opening”

2.09 D-38375-E100 Under Sheet Notes add “as part of a future project” to Note 1 after “existing pump station”

CLOSING DATE AND TIME

Remains unchanged.

This addendum constitutes a MATERIAL CHANGE to the bid. ITS RECEIPT BY THE BIDDER/PROPOSER IS TO BE ACKNOWLEDGED BY A SIGNATURE AND RETURNING A COPY OF THE ADDENDUM WITH ITS RESPONSE OR BY

CIRCLING THE ADDENDUM NUMBER IN THE APPROPRIATE AREA ON THE BID/PROPOSAL FORM.

Addendum prepared by: Laura Farthing, Senior Engineer - Water

The undersigned hereby acknowledges receipt of this Addendum and agrees to be bound by the conditions therein.

Company Name: ________________________________

Signature: ______________________________________ Date __________________________

End of Addendum

Eugene Water & Electric Board Section 00400

Rev. 8/17 Section 00400

BID FORM - REVISED

PROJECT: Highland Drive Pump Station Construction

BID OPENING: July 19th, 2022 at 2:00 pm

LOCATION: Eugene Water & Electric Board (EWEB) Roosevelt Operations Center 4200 Roosevelt, Blvd Eugene, OR 97402 Phone: 541-685-7150

THE FOLLOWING INFORMATION MUST BE RETURNED WITH YOUR RESPONSE:

00400 Bid Form 00450 Minimum Qualifications Form 00610 Bid Bond 00430-A First Tier Subcontractor Form Signed addenda (or acknowledged on 00400 Bid Form) Electronic copy (Flash drive preferred)

A. EXCEPTIONS: Bidders, please note that any exceptions or stipulations to any of the requirements of this solicitation must be submitted in accordance with Section 00200, 1.1(h), Protest or Request for Changes of Specifications and/or Bidding Requirements. Exceptions that are not submitted in compliance with Section 00200, 1.1(h), may cause your bid to be ruled non-responsive.

B. ACKNOWLEDGMENT OF RECEIPT OF ADDENDA TO BID DOCUMENTS:

Bidder acknowledges receipt of Addenda and agrees to be bound by their contents.

Circle each BID addendum posted: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, None Posted

C. CCB/LCB REGISTRATION NUMBER - EWEB Rule 5-0230 Eligibility to Bid or Propose;

Registration or License

Construction Contracts. EWEB shall not consider a Person's Offer to do Work as a contractor, as defined in ORS 701.005(2), unless the Person has a current, valid certificate of registration issued by the Construction Contractors Board at the time the Offer is made.

Non-complying Entities. EWEB shall deem an Offer non-responsive if it is received from a

Person that fails to comply with this rule and shall reject the Offer as stated in ORS 279C.365(1)(k), unless contrary to federal law or subject to different timing requirements set by federal funding agencies.

Bidder is in compliance with the requirements of and is registered and bonded with the State of Oregon Construction Contractor's Board or Landscape Contractors Board as follows:

Registration classification:

Registration No.: Expiration Date:

D. RESPONSIBILITY:

Prior to awarding a Public Improvement Contract, EWEB shall determine whether the lowest Responsible bidder meets the standards of Responsibility, as defined in ORS 279C.375.

E. BIDDER RESIDENCY INFORMATION:

ORS 279A.120 states, "For the purposes of awarding a public contract, a contracting agency shall":

o Give preference to goods or services that have been manufactured or produced in this state if price, fitness, availability and quality are otherwise equal; and o Add a percent increase to the bid of a non-resident bidder equal to the percent, if any, of the preference given to the bidder in the state in which the bidder resides.

“Resident bidder” means a bidder that has paid unemployment taxes or income taxes in the state of Oregon during the 12 calendar months immediately preceding submission of the bid, has a business address in this state, and has stated in the bid whether the bidder is a “resident bidder” under this paragraph.

“Non-resident Bidder” means a Bidder who is not a “resident Bidder” as defined above

1. CHECK ONE: Bidder is a ( ) RESIDENT Bidder ( ) NON-RESIDENT Bidder.

2. If resident bidder, enter your Oregon business address: (physical and mailing address)

3. If a non-resident bidder, enter state of residency:

4. If a non-resident bidder, do you or your company receive, or are you or your company eligible for any preference in award of contracts with your state’s government or with other governmental bodies in your state?

CHECK ONE: ( ) YES ( ) NO

If YES, state the preference percentage: _________________%

If YES, but not a percentage of bid price, describe the preference:

If YES, state the law or regulation that allows the preference described (legal citation):

F. ASSURANCES:

1. The Bidder hereby offers to furnish all labor, equipment, materials, and to perform all work, as bid, in strict accordance with all requirements of the above-named project.

2. The Bidder certifies that Bidder has read, understands, and will comply with the drug testing requirements set forth in Section 00430-B.

3. Bidder acknowledges and agrees that, if this contract is for a Public Work subject to ORS

279C.800 to 279C.870, Bidder will comply with ORS 279C.840, as applicable.

4. Bidder certifies that all statements in the bid are true.

5. Bidder understands that this offer shall be subject to acceptance for ninety (90) calendar days from date of opening; thereafter it may be withdrawn.

G. NON-COLLUSION: ORS 279A.010 and 279A.990 By signing and submitting a bid, bidder certifies that:

1. Bidder has arrived at the specifics of the bid, including price and amounts, independently and without communication or agreement with another bidder, except as disclosed in a separately attached statement;

2. The bidder is not submitting the bid in the interest of or on behalf of any undisclosed person;

3. The bidder has not directly or indirectly induced or solicited another bidder, in order to benefit a third person, to submit a false or sham bid, to refrain from bidding or to change a bid;

4. The bidder has not directly or indirectly disclosed the bidder's bid price, a breakdown of the price, the contents of the price or information or data related to the price to another bidder;

5. The bidder has not sought through communication or agreement with a person to fix the bid price of the bidder or another bidder, to fix an overhead, profit or cost element of the bid price of the bidder or another bidder or to secure any advantage against the contracting agency or any other person interested in the public contract;

6. The bidder has not directly or indirectly expressed an interest or lack of interest in the public contract, or paid or offered to pay a fee to a person, to cause a collusive or sham bid;

7. The bid is genuine and not collusive or a sham.

H. ACKNOWLEDGMENTS:

1. The Bidder acknowledges that the Contract consists of the following documents: Bid

Form, Drug Testing Program Requirements, Minimum Qualifications, First Tier Sub-contractor Form, Performance Bond, Payment Bond, Certificate for Payment, Accounts Affidavit, Certificate of Completion, EWEB General Provisions and Supplements, Prevailing Wage Requirements, Change Order Form, Specifications, Drawings, Attachments.

2. The Bidder declares that he/she has carefully examined the terms of this Contract and has personally inspected and is satisfied with conditions at the Project site.

3. The Bidder hereby states that he/she shall abide by the provisions of ORS 279C.830(1) relating to Prevailing Wages Rates.

4. A bid bond and performance and payment bond are required. The bidder encloses with this bid acceptable security in the amount of ten percent (10%) of the total amount of the bid, made payable to the Owner. The bid security shall be forfeited as liquidated damages if bid is accepted by Owner and bidder fails to execute the Contract, provide the performance and payment bonds in the amount of 100% of the total amount of the bid, and provide the required evidence of insurance, as described below (Section 00700), within the time allowed.

5. Bidder further agrees:

a. To start work within 10 days after the building permit is approved; to prosecute the work with diligence to its completion as follows:

Substantial Completion: April 29th, 2023

Final Completion: May 29th, 2023

b. To pay to the Owner as liquidated damages as detailed in Section 00800, Item

SGC-H.1.

c. To accept as full payment for the Project, the lump sum price of $__________.

This is the basis of award.

6. EWEB is an Equal Employment Opportunity and Affirmative Action employer and requires Contractors and their subcontractors to follow EEO/AA practices in their performance of this contract.

7. EWEB encourages contracting with minority owned, woman owned, and emerging small businesses (MWESB). The State of Oregon offers a certification process. Indicate below if your business is a MWESB and if so, which categories have been state certified.

MWESB Certified? No _____ Yes _____ If yes, circle categories below:

Minority Owned ___ Woman Owned ___ Emerging Small Business ___ Veteran Owned _____

The Contractor represents and warrants to the Owner that Contractor has the power and authority to enter into and perform this Contract, and that this Contract, when executed and delivered, shall be a valid and binding obligation of Contractor, enforceable in accordance with its terms. Contractor further warrants that the work of this Contract shall be performed in good and workmanlike manner, and that Contractor shall, at all times, be qualified, competent and current with any necessary licenses to perform work set forth in this Contract.

EUGENE WATER & ELECTRIC BOARD CONTRACTOR

Contract Administrator – Laura Farthing Company Name

Supervisor – Wallace McCullough Signed

Manager - Name (Print or Type)

ET (if required) - Address

Approved Purchasing Supervisor- Date

Date Telephone:

Email:

Tax ID No.

End of Section 00400

July 2022 01400-1 Eugene Water & Electric Board WO#: 2000499 Highland Dr Pump Station Construction

SECTION 01 56 39

TEMPORARY TREE AND PLANT PROTECTION

PART 1 GENERAL

1.1 SUMMARY

A. This Section includes provisions for temporary protection of trees and other plant life in preparation for site or building excavation Work.

B. This specification shall be applied concurrently and in conjunction with other plant material protection measures herein described and specified.

1.2 REFERENCE STANDARDS

A. ANSI A300 – Tree Care Operations Standards

B. Pruning practices shall conform with recommendations “Structural Pruning: A Guide For The Green Industry”; Published by Urban Tree Foundation, Visalia, California;

most current edition.

1.3 DEFINITIONS

A. Designated Trees: Existing Trees to Remain as indicated on Drawings.

B. Critical Root Zone (CRZ): The CRZ for trees 4 inches in caliper or smaller shall be an area with a radius at least 5 feet from the trunk. The CRZ for trees over 4 inches in caliper shall be an area with a radius of at least 1 foot 6 inches from the trunk for every 1 inch of caliper size.

C. Zone of Protection: As indicated on Drawings.

D. Weed: A plant that is undesirable where it is growing.

1.4 PROHIBITED ACTIVITIES

A. Cutting of roots 1 inch in diameter or larger without approval. Damaging tree bark, branches.

B. Removal of protective fencing or notice posted on trees prior to approval of Substantial Completion.

C. Activities prohibited within the Zone of Protection (without prior approval) are, but not limited to: construction, operation of machinery, storage of materials, paving, grading, cutting, filling, travel within, dumping, disposal of liquids, and parking of vehicles or equipment.

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1.5 SUBMITTALS

A. Contractor shall provide a Certified Arborist who is currently certified by the International Society of Arboriculture (ISA), approved by the Engineer, to perform all tree root and canopy pruning and other necessary preservation measures outlined in this specification as needed during the construction work at existing trees to remain.

Submit Certified Arborist credentials to Engineer for approval.

B. Submit product literature for temporary protection fencing for approval.

PART 2 MATERIALS

2.1 TEMPORARY PROTECTION FENCING

A. Provide 42-inch-high orange mesh construction fencing with agricultural metal stakes to be set at 10 feet on center minimum.

2.2 TREE PROTECTION SIGNS

A. In accordance with City of Eugene standards.

PART 3 EXECUTION

3.1 INSPECTION

A. Inspect all trees specified on the Drawings for protection prior to construction.

1. Document any unusual conditions with a written memorandum and photographs.

2. Submit copies of documentation to Engineer and Owner prior to beginning work.

B. Verify all conditions on the Drawings with actual conditions at the Site regarding tree protection prior to any site disturbance.

C. The Engineer must be present during demolition of existing conditions occurring within the drip line of trees designated to remain.

D. Notify Engineer 24 hours prior to inspections and/or tagging of protected trees.

3.2 PROTECTION

A. Install temporary protection fencing specified above and as shown in the Drawings at drip lines of trees designated to remain prior to the commencement of construction.

B. Clearly designate protected trees and keep them clear of any material storage, excessive personnel use, or vehicular movement underneath the tree canopy and tree root protection zone.

July 2022 01400-3 Eugene Water & Electric Board

C. Provide other barricades and guards as necessary or required to protect trees designated on the Drawings to remain, from damage above and below grade, as directed by the Engineer.

D. Protect root systems of trees and plant life to remain.

1. Protect from damage due to noxious materials in solution caused by runoff or spillage during mixing and placement of construction materials.

2. Protect from flooding, erosion, or excessive wetting resulting from dewatering operations and compaction.

3. Protect against unauthorized cutting, breaking, skinning roots and branches, or bruising bark.

4. Protect from smothering and compaction. Do not store construction materials or permit vehicles to drive or park within the drip line area of any tree to remain.

5. Protect from dumping of refuse in close proximity.

E. Where cutting is necessary, Contractor and Certified Arborist shall review conditions with the Engineer before proceeding and comply with directives of the Engineer.

3.3 EXCAVATION AROUND TREES

A. Excavate within drip lines of trees only where indicated on the Drawings or as directed by Engineer.

B. Where trenching for utilities is required within drip lines, tunnel under or around roots by hand excavating.

1. Where possible trench toward trunk of tree and tunnel under central root mass to avoid severing all lateral roots on side of trench.

2. Do not cut main lateral roots or tap roots over one inch in diameter.

3. Temporarily support and protect trees from damage until permanently covered with approved backfill.

C. Do not allow exposed roots to dry out before backfill is placed.

1. Provide temporary earth or burlap cover.

2. Water roots daily when exposed and maintain in a moist condition.

D. Backfill roots only upon inspection approval from the Arborist.

1. Backfill around root excavations only with clean imported topsoil free from materials deleterious to root growth.

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2. Backfill to eliminate voids and compact only by means of manual tamping at root areas.

3. Water sufficiently to settle topsoil and eliminate voids or air pockets around roots.

4. Allow for natural settlement of soil surface and furnish and apply topsoil sufficient to bring to original finish grade after backfill settlement.

E. If during excavation, any condition arises that threatens the survivability of the protected tree, or an unknown condition arises that affects the stability or integrity of the root system, notify the Engineer immediately.

3.4 ROOT PRUNING

A. Root pruning shall be in conformance with ANSI A300 (part 8) latest edition. Use approved root-pruning devices.

B. Prior to any excavating into the existing soil grade within the CRZ, root prune where identified on the plans to a depth of 24 inches below existing grade or as directed by the Owner's Representative.

C. Prune roots encountered during construction. Make clean, vertical cuts. Do not leave split or frayed ends. Obtain Owner's Representative's approval prior to cutting roots larger than 1 inch in diameter.

D. Cover exposed roots overnight with 4 layers of wet burlap or 5 inches of wet Mulch.

Backfill exposed roots with Soil Material as specified in Division 32 as soon as Work is completed.

3.5 REPAIR AND REPLACEMENT OF DAMAGED TREES

A. In the event of damage to existing trees:

1. Immediately prune limbs smaller than 3-inch caliper or roots smaller than 2-inch caliper to repair trees damaged by construction operations.

2. Make repairs promptly after damage occurs to prevent progressive deterioration of damaged trees.

3. Any such pruning and/or repairs shall be approved in advance and at completion by Engineer.

4. The Engineer shall reserve the right, at cost to the Contractor, to obtain the services of a Consulting Arborist with current membership in the American Society of Consulting Arborists (ASCA) to determine the severity of damage.

5. The Contractor is responsible for the cost of repairs caused by their actions or by the actions of subcontractors engaged by the Contractor.

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B. Remove and replace dead or damaged trees which are determined by the Engineer to be incapable of restoration to normal growth patterns at no additional cost to Owner.

1. Provide new trees of the same species as those removed or damaged, with size and/or quantity to be determined by Engineer.

2. Furnish replacement trees and plant life to the Site and plant, maintain, and warranty as directed by the Engineer.

3. If trees are not replaceable with the same species, and size, compensate the Owner for the replacement cost of the trees based on the evaluation of a Certified Consulting Arborist obtained by the Engineer.

4. The Contractor is responsible for additional costs of removing damaged trees and labor for planting new specimens.

3.6 DESIGNATED TREE REMOVAL PROCEDURES

A. If designated tree removal is specified by Engineer, furnish labor, material, and equipment necessary for removing and/or salvaging existing trees, if necessary, as designated on the Drawings for removal.

1. Verify location and species with Engineer prior to removal.

3.7 DESIGNATED TREE TRANSPLANTING PROCEDURES - NOT USED

3.8 GRADING AND FILLING AROUND TREES

A. Maintain existing grade within drip line of trees unless otherwise indicated on the Drawings or directed by the Engineer.

3.9 MAINTENANCE OF PROTECTIVE MEASURES

A. Maintain protective measures throughout the construction process. Immediately repair any alteration to protection measures throughout construction process. Repair or reinstall protective measures immediately upon alteration. Monitor protective measures daily.

B. Remove and clear area of debris and fencing, barricades, etc., upon final written approval of Engineer.

3.10 DAMAGE OR LOSS TO EXISTING PLANTS TO REMAIN

A. Actual tree damage such as trunk scoring and broken limbs or damaged roots inside the Zone of Protection will be assessed according to the percentage of loss of tree value.

Percentage of tree value will be determined by the Owner's Representative. Tree value will be determined from “Evaluation of Landscape Trees, Shrubs, and Other Landscape Plants” by International Society of Arboriculture.

B. Any remedial work on damaged existing trees recommended by the consulting arborist shall be completed by the Contractor at no cost to the Owner. Remedial work shall include but is not limited to: soil compaction remediation and vertical mulching, July 2022 01400-6 Eugene Water & Electric Board pruning and or cabling, insect and disease control including injections, compensatory watering, additional mulching, and could include application tree growth regulators.

C. Remedial work may extend up to two years following the completion of construction to allow for any requirements of multiple applications or the need to undertake applications at required seasons of the year.

END OF SECTION

E. Where cutting is necessary, Contractor and Certified Arborist shall review conditions with the Engineer before proceeding and comply with directives of the Engineer.

E. If during excavation, any condition arises that threatens the survivability of the protected tree, or an unknown condition arises that affects the stability or integrity of the root system, notify the Engineer immediately.