Sol_140P4325Q0066_Amd_0001.pdf

(x)

140P4325Q0066 x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

Boston MA 02129-4543

PNN

Building I-1 Charlestown Navy Yard Boston National Historical Park

NPS, NER - NE MABO

08/27/20250001

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

08/14/2025

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Tree removal and pruning at Frederick Law Olmsted National Historic Site.

The purpose of this amendment is to provide a response to RFIs # 1-4.

Period of Performance: 09/01/2025 to 11/30/2025

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Jason Albright

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

Request for Proposal Number 140P4325Q0066 Tree Removal, Pruning, and Stump Grinding at Frederick Law Olmsted National Historic Site Amendment 0001

DESCRIPTION OF AMENDMENT/MODIFICATION

The following are a list of questions received for the Solicitation Number 140P4325Q0066, Tree Removal, Pruning, and Stump Grinding at Frederick Law Olmsted National Historic Site.

1) Many of the specifications in the pruning portion of the bid say “prune – deadwood, for structure”

Is that intended to read pro to remove the deadwood imp implying that would improve the structure? Or does it mean two types of pruning one to remove deadwood (which there is no diameter specified for its removal) and secondly it says “for structure”. Is that intended to mean “structural pruning” according to Most recent industry standards?

Answer:

Some of these added points were for internal park discussions and clarifications.

Pruning for Deadwood = dead or damaged >2” removal of the deadwood is meant to help improve overall canopy structure.

4 trees in Attachment 1 (Core Property) require additional pruning – I’ve added some further info for clarification, numbers correspond to tree on attachement.

1) Cucumber Magnolia; DBH: 42.2”; Near parking area along Fairmont Street

a) Remove deadwood >2”

b) Reduce water sprouts to acceptable height to prevent crossing, branch rubbing, and density in canopy in accordance with BMPs.

2) Eastern White Pine; DBH: 41.4”; Behind barn along path to south lawn.

a) Remove deadwood >2”

b) Prune upper 15’ of canopy to reduce “sail effect”, in order to lessen density of growth at the top in accordance with BMPs.

3) Sugar Maple; DBH: 34”; On slope between P. strobus and T.tomentosa, near large rock.

a) Prune In accordance with BMPs for reduction of weight in canopy and improve overall structure, in addition to any deadwood >2”, removal of diseased or damaged branches, while larger competing branches can be reduced. Park is looking to reduce likelihood of large branch failure in canopy.

b) Add at least one cable to prevent premature leader failure.

5) Cucumber Magnolia; DBH : 45.4" ; Between carriage turn and fence along Warren St.

a) Remove branch stubs to reduce weight on large limbs opposite of damaged side of tree

b) Prune with select weight reduction cuts on scaffold branch ends to encourage strength at limb base

c) Reduce watersprouts and long limbs to reduce leverage and density of canopy to lessen “sail effect.”

d) Remove deadwood >2”

Request for Proposal Number 140P4325Q0066 Tree Removal, Pruning, and Stump Grinding at Frederick Law Olmsted National Historic Site Amendment 0001

2) On tree I., there is no description of how much room to clear the hemlocks below. And same question on the “deadwood and structure?

Answer:

Again, Some of these added points were meant as internal park discussions and clarifications.

Tree I, attachment 2: Red Oak, Pruning dead or damaged wood only >3”.

3) I just want to verify that the trees numbered 1-7 in attachment (1) are indeed being removed; the descriptions in the attachment states pruning for all but one.

Answer:

This was a miscommunication at the park level in the creation of the Scope.

Attachment 1 is Core Property and not Green Hill parcel. This has only One removal, identified as #7 Sugar Maple, DBH: 9” next to shed. The other trees on the Core property are pruning only. See other questions above for clarification outside of dead damaged wood >2”

4) Same question but with attachment (2) and the trees listed 1-7, A-J; just want to verify service descriptions.

Answer:

Attachment 2 is Green Hill Parcel.

Trees identified as numbers 1 -7 are removals. Only #6 Sugar Maple, near driveway, will be required for stump grinding to 18” below grade.

Trees identified as letters A – J are pruning only for dead or damaged wood >3”