Sol_140P4326R0002_Amd_0001.pdf

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 items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT 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.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

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

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

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

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Jason Albright

See continuation page

NPS, NER - NE MABO

Boston National Historical Park Charlestown Navy Yard Building I-1 Boston MA 02129-4543

PNN

140P4326R0002

01/23/2026

01/13/2026

1 14

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140P4326R0002/0001

Cape Cod National Seashore - Replace Septic

System at Delfino and Eggleston 2

The purpose of this amendment is to provide a response to all questions received, to provide the list of attendees to the organized pre-bid site-visit conducted on January 23, 2026, and to schedule a second organized site-visit for interested offerors that were unable to attend the first.

Therefore:

1. A response to all questions received is incorporated into this Amendment.

2. List of attendees to the January 23, 2026, site-visit is attached.

3. A second organized site-visit has been scheduled for January 29, 2026, at 10:10 am ET.

Participants shall meet at 880 Cable Road, Eastham, MA, 02642.

Period of Performance: 09/30/2026 to

02/28/2027

Request for Quote Number 140P4326R0002 Replace Septic Systems at Delfino and Eggleston 2 for Cape Cod National Seashore Amendment 0001

DESCRIPTION OF AMENDMENT/MODIFICATION

The following are a list of questions received for the Solicitation Number 140P4326R0002, Replace Septic Systems at Delfino and Eggleston 2 for Cape Cod National Seashore.

1) Typical Drainfield Plan View on C4 indicates a length of 37.6’ however Design calculations on C1 and C2 indicate 8 chambers are needed, which would be a length closer to 52’. Please confirm 8 chambers are required.

Answer: Eight (8) chambers are required, as indicated by the design calculations on Sheets C1 and C2. The Contractor shall install the drainfield system in accordance with the approved design calculations and applicable MassDEP requirements. The plan view length on Sheet C4 is non-governing and does not supersede the design calculations.

2) Are systems at both locations active? Will they remain in service during construction?

Answer: The existing septic systems are currently active. The Contractor shall coordinate construction sequencing to maintain sanitary service as required until the new systems are placed into service, in accordance with the Contract Documents.

3) Typical Cultech details show the use of double washed stone above, below and around units. Septic details do not show use of stone. Please confirm use of stone is not required.

Answer: Stone is not required unless required by the MassDEP-approved installation requirements of the specific gravelless trench system proposed and approved for use under the Disposal System Construction Permit.

The Contract Documents specify gravelless trench chambers installed in accordance with the manufacturer’s MassDEP system approval and all permit conditions. If the approved system’s installation requirements include stone bedding or cover, stone shall be provided in accordance with those requirements.

4) General Note 8 on G@ requires a certified arborist for all tree trimming or removal.

Please confirm additional cost for this requirement is necessary considering the scope of this project.

Answer: All tree trimming and removal shall comply with the Contract Documents, including General Note 8 on Sheet G4. Any required arborist services are incidental to the work and shall be included in the Contractor’s bid prices. No separate payment will be made.

Amendment 0001

5) Please confirm contractor will be responsible for DEP permitting process.

Answer: Confirmed. The Contractor is responsible for all required permits, approvals, inspections, coordination, and associated fees, including MassDEP permitting, as specified in Section 01 31 00, Section 01 11 00, and Section 01 27 00.

6) Please advise if Contractor will incur any costs from the Designer of Record for tasks required by DOR throughout the project like inspections, etc.

Answer: Any inspections, certifications, testing, or documentation required to complete the work and obtain regulatory approval shall be the responsibility of the Contractor and included in the bid prices, unless explicitly identified as a Government responsibility in the Contract Documents.

7) Have any tapping or connection fees been discussed with the Town of Eastham for new waterline?

Answer: The Contractor is responsible for determining, coordinating, and paying all required tapping fees, connection fees, permits, inspections, and associated costs required by the Town of Eastham for the new water service, as specified in Section 01 31 00.

8) 01 11 00 para 1.3.D.6 regarding tree removals. If trees cannot be removed until November 1, the performance period of 150 days would be inadequate. Please advise.

Answer: As shown in block 11 of the SF1442, and in clause 52.211-10, work shall be completed within 150 calendar days from issuance of Notice to Proceed (NTP). It is anticipated that NTP shall be issued on or about September 30, 2026, to account for tree removal and ground disturbance restrictions, resulting in a period of performance from September 30, 2026 to February 28, 2027, as shown on page 3 of the SF1442.

9) 01 11 00 para 1.9.C.1 regarding no ground disturbing work between April 15 and August

30. If this is the case, the performance period of 150 days would be inadequate. Please advise?

Answer: As shown in block 11 of the SF1442, and in clause 52.211-10, work shall be completed within 150 calendar days from issuance of Notice to Proceed (NTP). It is anticipated that NTP shall be issued on or about September 30, 2026, to account for tree removal and ground disturbance restrictions, resulting in a period of performance from September 30, 2026 to February 28, 2027, as shown on page 3 of the SF1442.

10) Please confirm if CLIN 00040 and 00050 include pumping of septic systems in addition to the testing requirements?

Answer: CLINs 00040 and 00050 include all labor, equipment, materials, testing, coordination, and services necessary to complete the work described, including pumping as required to perform testing, inspections, system commissioning, and final acceptance. No separate payment will be made for pumping unless specifically identified as a separate line item.

11) Please confirm cost of archaeological and/or tribal monitoring will be the responsibility of the Govt.

Answer: The Park Archaeologist and Historian have reviewed the construction limits and proposed work areas and determined that the areas are cleared for construction. No routine archaeological or tribal monitoring is currently anticipated for the work as shown.

If previously unidentified cultural or archaeological resources are encountered during construction, the Contractor shall comply with all stop-work, protection, and notification requirements in accordance with Section 01 35 13.22. Any archaeological or tribal monitoring required as a result of such discoveries will be provided by the Government unless otherwise specified in the Contract Documents.

12) Please confirm there are no option years for CLINs 00040 and 00050.

Answer: Confirmed. CLINs 00040 and 00050 are option CLINs but do not include option years.

13) 01 78 36 Part 5 Deliverables list startup and training report as a deliverable under option CLINs 00040 & 00050. Should this deliverable be included in CLINs 00010 & 000020 instead?

Answer: No change. Deliverables shall be provided as specified in Section 01 78 36.

Startup and training are post-installation services associated with the Wastewater System Operation, Maintenance, and Monitoring Services and are included within the Base Period of those services. Accordingly, startup and training reports associated with work performed under CLINs 00040 and 00050 shall be included in those CLINs.

14) The specification for the septic drainfield, spec 33 36 13, appears to be missing from the contract documents. Please confirm.

Answer: The specification for the septic drainfield, spec 33 36 13 is provided as part of this amendment. All references to septic drainfield shall apply to specification 33 36 13, Septic Drainfield.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 1

140P2021D0008 SEPTIC DRAINFIELD

SECTION 33 36 13 - SEPTIC DRAINFIELD

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions, Division 1 Specification Sections and Special Provisions apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Septic drainfield installation from the outlet of the septic tank, and grading.

2. Septic drainfield subgrade preparation and grading.

3. Gravelless Trench Chambers.

4. Infiltrator Domes (or engineer approved equal)

B. Related Sections include the following:

1. Division 02 41 13 Selective Site Demolition

2. Division 31 10 00 Site Clearing

3. Division 31 23 16 Excavation and Embankment

1.3 DEFINITIONS

A. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

B. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Engineer. Authorized additional excavation and replacement material will be paid for according to Section 012601 “Contract Modification Procedures” or Contract provisions for changes in the Work.

2. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Engineer. Unauthorized excavation, as well as remedial work directed by Engineer, shall be without additional compensation.

C. Embankment and Fill: Soil materials used to raise existing grades.

D. Native Soil: Soil material that is in-place or excavated from the project site.

E. Rock: Rock material in beds, ledges, unstratified masses, conglomerate deposits, and boulders of rock material 1 cubic yard or more in volume that exceed a standard penetration resistance of 100 blows/2 inches when tested by an independent geotechnical testing agency, according to ASTM D 1586.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 2

F. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

G. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

H. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

1.4 SUBMITTALS

A. Material Test Reports: From a qualified testing agency indicating and interpreting test results for compliance of the following with requirements indicated:

1. Classification according to ASTM D 2487 of each on-site and borrow soil material proposed for fill and backfill.

2. Laboratory compaction curve according to ASTM D 698 for each on-site and borrow soil material proposed for fill and backfill.

B. When, in the opinion of the Engineer, the field soil conditions differ from those represented by the material test reports, new samples shall be taken by the Contractor and delivered to the testing agency for classification and laboratory compaction curve testing.

All testing shall be based on the appropriate soil test results.

C. Infiltration Chambers: Submit from the approved list of gravelless trench components section of the Approval for General Use memorandum from the Massachusetts Department of Environmental Protection dated March 31, 2016.

D. Precast Concrete Distribution box: Details of construction.

Piping: Pipes shall be PVC SDR 32, PVC Schedule 40 pressure class 200 or engineer approved equal.

1.5 QUALITY ASSURANCE

A. Geotechnical Testing Agency Qualifications: An independent testing agency qualified according to ASTM E 329 to conduct soil materials and rock-definition testing, as documented according to ASTM D 3740 and ASTM E 548.

B. Field Survey and Construction Tolerances: The Engineer will provide horizontal and vertical control for earthwork as specified in the Special Provisions. The Contractor shall provide all additional surveys for line, grade and structural location. Construction tolerances shall be as specified in the Special Provisions.

1.6 PROJECT CONDITIONS

A. Based upon an existing drainfield survey completed at the site, unsatisfactory soils below each existing drainfield trench must be removed to a minimum of 1 foot depth below the new drainfield trench chambers.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 3

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Drainfield Soils:

1. On-site soil material free of rock or gravel larger than 8 inches] in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

2. Borrow soil material meeting ASTM D 2487 Soil Classification Groups GW, GP, GM, SW, SP, and SM or a combination of these groups; free of rock or gravel larger than 6 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

C. Unsatisfactory soils include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.

D. Drainfield Subgrade Sand: ASTM C 33; fine aggregate, natural, or manufactured sand.

E. Protective Soil Cover: Native or borrow soil material consisting of ½-inch minus soil material. Crushed material or native materials with fractured aggregate that could damage the chambers will not be allowed.

2.2 GRAVELLESS TRENCH CHAMBERS

A. General: Provide gravelless trench chambers from list of certified components as defined in the Approval for General Use memorandum from the Massachusetts Department of Environmental Protection dated March 31, 2016

B. Acceptable Systems: CULTEC Recharger 180HD or approved equal.

C. Trench chambers shall be installed according to the manufacturer's recommendations.

The chamber trench subgrade shall be undisturbed native soil.

2.3 PIPING, VALVES AND ACCESSORIES

A. General: Provide piping valves and fittings as shown on drawings.

PART 3 - EXECUTION

3.1 GENERAL

A. Take precautions to protect all adjoining private and public property and facilities, including underground and overhead utilities, access roads, structures, and fences.

Restore or replace all disturbed or damaged facilities to their original condition at Contractor’s expense.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 4

B. Preparation of subgrade for earthwork operations including removal of vegetation, topsoil, debris, obstructions, and deleterious materials from ground surface as specified.

C. Protect and maintain erosion and sedimentation controls during earthwork operations.

D. Contact utility owners using Digline for utility locates at least 48 hours before staring work. Protect utilities exposed during the work and prevent damage to underground utilities adjacent to excavations. Immediately notify the utility owner of any construction damage. Repairs of damage to marked utilities are at the expense of the Contractor.

E. Protect existing site improvements from damage during construction. Protect existing water and sewer mains and water and sewer services from freezing at all times during construction. Restore damaged improvements to their original condition, as acceptable to Owner.

F. Prior to beginning excavation, backfilling, and grading operations, perform all necessary surveys for control of line and grade and establish firm and protected monuments for reference throughout the construction period. Provide a sufficient number of such monuments throughout the work to permit verification of the work within the tolerances specified. Protect and maintain benchmarks and survey control points from disturbance during construction.

G. The methods of construction will be the Contractor's responsibility. Utilize equipment appropriate for the work being performed and assure all methods and equipment used result in finished work meeting the construction tolerances specified.

H. No work may be performed beyond the construction limits without prior written approval from the adjoining landowner.

3.2 DEWATERING

A. Prevent surface water and ground water from entering excavations, from ponding on prepared subgrades, and from flooding Project site and surrounding area.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches.

2. If required, install a dewatering system to keep subgrades dry and convey ground water away from excavations. Maintain until dewatering is no longer required.

3.3 EXCAVATION

A. Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Excavated materials may include soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized regardless of the character of surface and subsurface conditions encountered.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 5

2. If rock is encountered within excavations, cease work in the area where rock is discovered until a time and materials change order for the extra work can be agreed upon by the Contractor, Owner and Engineer. The work in the affected area will again proceed after a change order is processed, and no shutdown time or associated additional costs will be awarded other than those agreed upon in the change order.

3.4 EXCAVATION FOR DRAINFIELD STRUCTURES

A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch (25 mm). If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.

1. Excavations for Footings and Foundations: Do not disturb bottom of excavation.

Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

2. Excavation for Drainfield Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch (25 mm). Do not disturb bottom of excavations intended as bearing surfaces.

3.5 DRAINFIELD SUBGRADE

A. Notify Engineer when excavations have reached required drainfield subgrade.

B. If Engineer determines that unsatisfactory drainfield subgrade soil material is present, subexcavate to a depth of six inches (6”) and replaced with material meeting the drainfield subgrade specification.

C. Drainfield subgrade may not be constructed of material excavated from on-site or from borrow areas.

D. The drainfield subgrade shall be graded uniformly smooth and be free from angular rocks, roots and vegetation.

E. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Engineer, without additional compensation.

3.6 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.7 SOIL MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 3 percent of optimum moisture content.

1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 6

2. Remove and replace, or scarify and air dry otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.8 DRAINFIELD STRUCTURES

A. Place drainfield structures on level compacted soil.

3.9 COMPACTION OF SOIL EMBANKMENTS AND FILLS

A. Place backfill and fill soil materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment, and not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Complete compaction entirely across each layer of embankment and/or subgrade, commencing at the sides and progressing toward the center, overlapping each preceding pass by approximately one-half the width of the compaction equipment.

C. Do not drive wheeled vehicles across the system when applying cover material. Use a light tracked vehicle and maintain a minimum cover of 6” between the chambers and tracks at all times.

D. Suspend and modify compaction as required whenever evidence of pumping or unconsolidation of underlying work is observed.

E. Control the operation of compaction equipment to prevent damage to previously completed work including adjacent structures, pipelines, and previously completed layers of embankment

F. Place backfill and fill soil materials evenly on all sides of structures to required elevations, and uniformly along the full length of each structure.

G. Place and compact soil materials as follows to not less than the following percentages of maximum dry unit weight according to ASTM D 698:

1. Embankment

a. Place embankment backfill in maximum 8 inch compacted lifts within 3 percent of optimum moisture content and compact to a minimum of 95 percent.

2. Drainfield Subgrade

a. If native soils are encountered during excavation meeting the specification for liner subgrade, leave the material undisturbed. If disturbed, compact material to a minimum of 95 percent.

b. Place imported Drainfield subgrade backfill in 2 6 inch lifts.

c. Compact to a minimum of 95 percent.

3. Pipe Trenches in drainfield.

a. Place trench backfill in maximum 8 inch compacted lifts within 3 percent of optimum moisture content and compact to a minimum of 95 percent.

CACO DELFINO AND EGGLESTON 2 33 36 13 - 7

3.10 TOPSOIL

A. Place stockpiled topsoil to a depth of 6 inches (15 cm) on the surface of the new drainfield, pipe excavations, and all disturbed areas except access roads, streets, and alleys. Stockpile excess topsoil in a location approved by the Engineer.

3.11 GRADING

A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes.

Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

1. Provide a smooth transition between adjacent existing grades and new grades.

2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

B. Site Grading: Slope grades to direct water away from buildings and to prevent ponding.

Finish subgrades to required elevations within the following tolerances:

3.12 CLEANUP AND DISPOSAL

A. As work progresses, remove debris and complete to finish grade each portion of the work. Once the work is complete, finish the entire site to a smooth, uniform surface presenting a neat and workmanlike appearance.

B. Remove all vegetation, debris, concrete, large boulders, and other undesirable material from the site and legally dispose of them. Remove and dispose of all rocks brought to the surface during excavation or backfilling.

1. On-site disposal of debris will not be allowed.

2. Burning will not be permitted unless the Contractor can obtain a burning permit from the Idaho Department of Lands. The Contractor will be required to submit the permit to the Engineer before burning.

END OF SECTION 33 36 13

Sponsored by GSA FAR (48 CFR) 53.110

B. Site Grading: Slope grades to direct water away from buildings and to prevent ponding. Finish subgrades to required elevations within the following tolerances: