Green Village Amendment Three.pdf

(x)

33330221RF0010024

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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

OCON

Washington DC 20013-7012

MRC 1200

P.O. BOX 37012

SMITHSONIAN INSTITUTION

06/16/20210003

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

05/13/2021

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.)

A. The Solicitation Number cited above, for the Green Village Cottages and Site

Improvements, located at the Smithsonian Environmental Research Center (SERC), is hereby amended as follows:

A.1. The Davis Bacon Wage Determinations to be used for this project are: MD20210039, Modification No. 4 dated 06/04/2021; and MD20210060 dated 01/01/2021.

A.2. The SI Subcontracting Goals for Small Businesses are as follows: 40%- A minimum of the planned subcontracting dollars to be placed with small business concerns. The following are subsets of the small business goals: 7%- A minimum of dollars to be placed with small disadvantaged businesses (SDB), including Historically Black Universities or

Continued ...

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)

Willard B. Powell

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 .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 2

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

33330221RF0010024/0003

Minority Institutions; 7%- A minimum of dollars to be placed with Women-Owned small businesses

(WOSB); 4%- A minimum of dollars to be placed with HUB Zone (HubSB) small businesses; 4%- A minimum of dollars to be placed with

Veteran-Owned small businesses (VOSB); and 4%- A minimum of dollars to be placed with Service

Disabled Veteran-Owned small businesses (SDVOSB).

A.3. Offerors RFI's and Smithsonian responses are attached hereto.

B.1. The Due Date for Receipt of Proposals remains June 30, 2021 at 12:00 noon.

END OF AMENDMENT THREE

Period of Performance: 05/13/2021 to 06/30/2021

NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

RESPONSES TO BIDDER QUESTIONS/ RFP Solicitation:

1282111 SERC Green Village Design-Build

RFI QUESTION RESPONDENT RESPONSE 6/11/21

1 Please confirm if the project is to be complete within 365 days as called for on page

15 paragraph 3.a.1 or 300 days as called for on page 18 paragraph 2.1, or if there is a difference between the two completion dates.

SI-PM/DM

The time for project completion is 365 days.

2 Please confirm that Design Build projects that exceed the scope and complexity of this project will be accepted as relevant

SI-PM/DM

Confirmed.

3 Section 1 Design-Build Team page 10 of solicitation calls for resumes and organizational chart for required team members, the same requirement for resumes and organizational chart is called out in Section 2 Key Team Members for both construction and design team. Please confirm if we are to duplicate the resumes in both sections or if not please confirm which section should reflect resumes and org chart.

SI-PM/DM

The required information can be provided in section 1 and cross-referenced in section 2.

4 Please confirm if the project superintendent can also act as project safety manager and project quality control manager.

SI-CM

Confirmed.

5 Paragraph 2.3.1 Access of the Program Narrative state that the fire truck turn around has been relaxed. Please confirm that the bridged design that was provided with the

RFP meets the requirements for the turn around or if the design builder has to devise a solution that is code compliant.

SI-DM/OSHEM

The information shown in the site improvement plans and narrative has been coordinated with the Anne Arundel County Fire Marshal and provides for an adequate T turn around for fire apparatus.

6 Paragraph 5.2 Ventilation of the Program Narrative state that “the proposed design does not include the mechanical ventilation system required by ASHRAE 62.2 for buildings that are thermally conditioned for more than 876 hours per year”. Please confirm if the Design-Builder is to incorporate this requirement into our design or if this requirement is being waived.

SI-PM/DM

This language will be removed from the Narrative. The Design-Build contractor must determine all applicable ASHRAE requirements as part of their design of the cottages and the requirement for the Cottages to be Passive House certified.

7 Paragraph 6.3.6 Non-Potable Reclaimed Water of the Program Narrative seems to duplicate the section prior covering Potable Water. Please confirm what is covered under Non-Potable section.

SI-

SERC/PM/DM

Section 6.3.6 will be revised as follows:

6.3.6 Non-Potable Reclaimed Water

New 8" DIP reclaimed water lines shall be provided extending from existing DIP reclaimed water.

One reclaimed water line will run from the southwest corner of the site, along the existing woodland parking stalls, and terminate at a fire hydrant positioned to serve the future lodge. The second reclaimed water line will extend from the existing reclaimed water running east-west between the existing dormitory and the proposed cottages. A fire hydrant shall be added off the existing reclaimed water line, near the northwest corner of the dormitory. There shall be a 4" DIP sprinkler line connection to each cottage and one caped to serve the future lodge. Reclaimed

Water is intended to be used for fire protection (sprinkler systems) and gray water purposes

(toilet flushing and exterior hose bibb). Each cottage will require an internal split to provide these services.

8 Please confirm that in the first two cottages (#1& #2) that are to meet ADA code requirements that those requirements only apply to the first floor of each cottage and that the second floor bathrooms don’t need to comply with ADA.

SI-

SERC/PM/DM

Confirmed.

9 There are references to IBC 2015 throughout the Program Narrative except in the electrical section which references IBC 2017. Please confirm that electrical should also follow 2015 IBC.

SI-DM

The latest edition of IBC shall be utilized in the DB development. 2021 edition.

10 In program narrative item 1.2 Cottage: The first two cottages will be ADA accessible on the first level. Does that mean that the plans for the other cottages will be tweaked for non ADA compliant rooms and therefore additional floor plans required?

SI-

SERC/PM/DM

The first two cottages require ADA accessibility on the first level. The remaining cottages do not and therefore the plans may vary. However, it may be more cost effective to exactly replicate all six cottages. Either approach is acceptable.

11 In program narrative item 1.2 Cottage: It states that each pair of cottages should be designed as connected duplexes, however other section indicates single building.

Please confirm if these are to be constructed as Duplexes.

SI-

SERC/PM/DM

The cottages are not required to be duplexes. Cottages shall be designed and sited as individual units constructed in pairs as shown on the site improvement drawings.

12 Floor plans attached are not dated. Please confirm these floor plans are the March

12th plans referenced in the RFP

SI-DM

Confirmed.

13 Floor plans included seem to indicate stacked washer and dryer. There are some commercial stacked washer and dryers available where controls are within reach range, however it is very difficult to actually get the clothes out of the back of the dryer when it is stacked. Should a side by side W/D be provided?

SI-

SERC/PM/DM

Washer and dryer will be provided and installed by SERC. Cottages designs shall accommodate a stacked washer/dryer configuration with all necessary utilities for service.

14 Section 3.1 references porches. Porches are not shown on the plans provided.

Should we assume porches to be included?

SI-

SERC/PM/DM

No porches are required. An exterior deck connecting each pair of cottages shall be provided as indicated on the site improvement plans.

15 Section 2.5.1 of the RFP indicates that, “MDE has been engaged by the SI and A/E of record for the site improvements work and will continue coordinating and obtaining

MDE approvals and permits for the project.” This statement reads as though the

MDE process has been initiated by the Smithsonian and Dewberry and that they will continue to secure permit approvals. Please clarify the work that has been done on the MDE front to date and what work is the responsibility of AE2 (the design/builder’s A/E).

SI-PM/DM

The SI and A/E of record for the site improvements work will obtain MDE approvals and permits for the project and provide such to the DB Contractor. The DB Contractor will be responsible for coordinating MDE inspections and other typical activities during construction. If the DB

Contractor requires revisions to the MDE permit for any reason they will be responsible for any

MDE coordination and permit revisions.

16 Please provide more detail on the design intent and requirements of the “Wetness

Gradient Garden”. Is this intended to be an interpretive feature with signage and other interactive elements?

SI-

SERC/PM/DM

Signage is not required.

RESPONSES TO BIDDER QUESTIONS, RFP Solicitation No. F18R010034 Page 1 of 2

17 Please clarify what is to be priced to comply with MDE’s requirements? Addition of a forebay and maintenance of the existing pond plus three Filterras? There is insufficient time to for AE2 to coordinate with Amanda Malcom or Colin Hiltner and determine the site-specific requirements for the project before bid day. The pricing risk for this should not be borne solely by the design/builder.

SI-

SERC/PM/DM

Bidders should price what is shown on the site improvement drawings and specs. The work shown reflects MDE coordination and input. The DB Contractor will be responsible for construction and any MDE compliance items including inspections and any plan or permit revisions.

18 The roadway grading plan shows an inverted section with trench drains and no curbs.

This is fairly unorthodox for residential construction. Will a more traditional, crowned roadway with curbs and roadside swales be considered? What was the driver for the inverted section/trench drain arrangement?

SI-

SERC/PM/DM

Construction shall be as shown on the site improvement plans and specs.

19 The grading plan shows 6:1 (+/-) grading in and around the cottages, but they are to be slab on grade construction. Slab on grade construction requires a flat pad to be graded in. Some retaining walls are shown on the layout plans, but the grades to not tie into them properly nor do they extend the entire length of the cottages. Is the intent for there to be wall placed along the back of all of the cottages and for that wall to be tied to the building foundation in some fashion?

SI-

SERC/PM/DM

Bidders should price what is shown on the site improvement drawings and specs. The DB

Contractor is responsible for design of the cottages and coordination with the site improvement plans. Design of the cottages should work with the grading design. If in the course of designing the duplex cottages adjustments are needed to the grading plan the DB Contractor shall propose such changes and be responsible for revisions to the site improvement plans. The requirement for the cottages to be duplexes has been removed. Cottages shall be individual dwellings constructed in pairs as shown on the site plans. This aligns with the original concept design. Each pair includes a rear "knee wall" for each cottage duo. A "final grading plan" is attached to show the design intent. A standalone retaining wall was not contemplated with the current grading.

The "knee wall" was used in lieu of a retaining wall to minimize steep slope impacts and clearing.

The knee wall approach allowed grade to be maintained higher on the rear of the cottages and still provide a drainage swale on the back side for conveyance around the cottage duos to provided storm drain inlets.

20 Offsite drainage appears to be an issue with the finished floor elevations of the cottages. What is the design intent as far as waterproofing and routing flows around the buildings to the yard inlets? The grading plan shows flow into the buildings.

SI-PM/DM

Bidders should price what is shown on the site improvement drawings and specs. The DB

Contractor is responsible for design of the cottages and coordination with the site improvement plans. Design of the duplex cottages should strive to work with the current grading design. If in the course of designing the duplex cottages adjustments are needed to the grading plan the DB

Contractor shall propose such changes and be responsible for revisions to the site improvement plans as approved by SI.

21 Are there any clearance requirements for potable water and reclaimed water piping runs? SI-DM

Minimum cover over potable water, reclaimed water and FDC shall be 4 feet. See note 13 on

Sheet C-1-4. Horizontal clearances shall be as shown on the utility plans. Vertical clearances shall be a minimum of 1 ft.

22 There does not appear to be a turnaround area for a fire apparatus provided. Will one be required?

SI-

SERC/PM/DM/

OSHEM

The information shown in the site improvement plans and narrative has been coordinated with the Anne Arundel County Fire Marshal and provides for an adequate T turn around for fire apparatus.

23 Is the intent of the grading plan to balance the earthwork? We note that unit costs are requested for unsuitable soils. Are there earthwork estimated that have been prepared for the concept design?

SI-PM/DM

That is the intent. Earthwork will be optimized to balance as closely as possible. No additional information is available beyond what is shown in the drawings and specs.

24 Please confirm if supply and install of furniture is included in the design-builders number

SI-

SERC/PM/DM

Furniture is not included in the DB contract. Furniture will be procured by SERC.

RESPONSES TO BIDDER QUESTIONS, RFP Solicitation No. F18R010034 Page 2 of 2

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CONC.

EXISTING BUILDING (TRAILER)

F.F.=53.91'

B.F.=43.42'

OVERHANG

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12" TREE

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18" TREE

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18" TREE

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PROPOSED RETAINING WALL

PROPOSED RAILING

PROPOSED BUILDING

PROPOSED DRIVE

EXISTING TREELINE

EXISTING TOPOGRAPHY

EXISTING ASPHALT

EXISTING GRAVEL ROAD

EXISTING BUILDING

EXISTING STORM DRAIN

EXISTING RECLAIMED WATER

LEGEND

EXISTING POTABLE WATER

EXISTING SEWER

EXISTING CLEAN OUT

EXISTING SIGN

EXISTING ELECTRIC HAND HOLE

EXISTING POWER POLE

EXISTING LIGHT POLE

EXISTING TREE

EXISTING TELECOMM

EXISTING COMMUNICATION LINE

EXISTING UNDERGROUND POWER

PROPOSED TOPOGRAPHY

PROPOSED LIMIT OF

DISTURBANCE

PROPOSED SPOT ELEVATION

PROPOSED STORM DRAIN

PROPOSED TREELINE

PROPOSED SIDEWALK

TREE PIT FOR

PROPOSED FILTERRA

UNIT OR SIMILAR SWM

FEATURE (TYP. 3)

NOTE: GRADING IS SUBJECT TO CHANGE THROUGHOUT FINAL

ENGINEERING DESIGN.

CONNECT TO EX.

S/W AT GRADE

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NOTE: THIS PLAN IS FOR FINAL GRADING ONLY

Smithsonian Institution

Washington, DC 20024-2520 600 Maryland Avenue S.W. Suite 5001

Smithsonian Facilities

Dewberry Engineers, Inc.

10461 MILL RUN CIRCLE

SUITE 300

OWINGS MILLS, MD 21117

(P) 410.265.9500

WWW.DEWBERRY.COM

Federal Reserve Bank Building

100 North 6th Street

Philadelphia, PA 19106-1590

Tel: 215-923-2020 Fax: 215-574-0952

PROFESSIONAL

CERTIFICATION:

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BEST MANAGEMENT PRACTICES FOR WORKING IN NONTIDAL WETLANDS, WETLAND BUFFERS,

WATERWAYS, AND 100-YEAR FLOODPLAINS

(APPLIES TO EAST SIDE OF LOD, IN AND IMMEDIATELY ADJACENT TO EXISTING WETLAND BUFFER)

1) NO EXCESS FILL, CONSTRUCTION MATERIAL, OR DEBRIS SHALL BE STOCKPILED OR STORED IN

NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR THE 100-YEAR

FLOODPLAIN.

2) PLACE MATERIALS IN A LOCATION AND MANNER WHICH DOES NOT ADVERSELY IMPACT SURFACE

OR SUBSURFACE WATER FLOW INTO OR OUT OF NONTIDAL WETLANDS, NONTIDAL WETLAND

BUFFERS, WATERWAYS, OR THE 100-YEAR FLOODPLAIN.

3) DO NOT USE THE EXCAVATED MATERIAL AS BACKFILL IF IT CONTAINS WASTE METAL PRODUCTS, UNSIGHTLY DEBRIS, TOXIC MATERIAL, OR ANY OTHER DELETERIOUS SUBSTANCE. IF ADDITIONAL

BACKFILL IS REQUIRED, USE CLEAN MATERIAL FREE OF WASTE METAL PRODUCTS, UNSIGHTLY

DEBRIS, TOXIC MATERIAL, OR ANY OTHER DELETERIOUS SUBSTANCE

4) PLACE HEAVY EQUIPMENT ON MATS OR SUITABLY OPERATE THE EQUIPMENT TO PREVENT

DAMAGE TO NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR THE

100-YEAR FLOODPLAIN.

5) REPAIR AND MAINTAIN ANY SERVICEABLE STRUCTURE OR FILL SO THERE IS NO PERMANENT

LOSS OF NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, OR WATERWAYS, OR

PERMANENT MODIFICATION OF THE 100-YEAR FLOODPLAIN IN EXCESS OF THAT LOST UNDER

THE ORIGINALLY AUTHORIZED STRUCTURE OR FILL.

6) RECTIFY ANY NONTIDAL WETLANDS, NONTIDAL WETLAND BUFFERS, WATERWAYS, OR 100-YEAR

FLOODPLAIN TEMPORARILY IMPACTED BY ANY CONSTRUCTION.

7) ALL STABILIZATION IN THE NONTIDAL WETLAND AND NONTIDAL WETLAND BUFFER SHALL

CONSIST OF THE FOLLOWING SPECIES: ANNUAL RYEGRASS (LOLIUM MULTIFLORUM), MILLET

(SETARIA ITALICA), BARLEY (HORDEUM SP.), OATS (UNIOLA SP.), AND/OR RYE (SECALE CEREALE).

THESE SPECIES WILL ALLOW FOR THE STABILIZATION OF THE SITE WHILE ALSO ALLOWING FOR

THE VOLUNTARY REVEGETATION OF NATURAL WETLAND SPECIES. OTHER NON-PERSISTENT

VEGETATION MAY BE ACCEPTABLE, BUT MUST BE APPROVED BY THE NONTIDAL WETLANDS AND

WATERWAYS DIVISION. KENTUCKY 31 FESCUE SHALL NOT BE UTILIZED IN WETLAND OR BUFFER

AREAS. THE AREA SHOULD BE SEEDED AND MULCHED TO REDUCE EROSION AFTER

CONSTRUCTION ACTIVITIES HAVE BEEN COMPLETED.

8) AFTER INSTALLATION HAS BEEN COMPLETED, MAKE POST-CONSTRUCTION GRADES AND

ELEVATIONS THE SAME AS THE ORIGINAL GRADES AND ELEVATIONS IN TEMPORARILY IMPACTED

AREAS.

9) TO PROTECT AQUATIC SPECIES, IN-STREAM WORK IS PROHIBITED AS DETERMINED BY THE

CLASSIFICATION OF THE STREAM:

USE I WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD MARCH 1

THROUGH JUNE 15, INCLUSIVE, DURING ANY YEAR.

USE III WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD

OCTOBER 1 THROUGH APRIL 30, INCLUSIVE, DURING ANY YEAR.

USE IV WATERS: IN-STREAM WORK SHALL NOT BE CONDUCTED DURING THE PERIOD MARCH

1 THROUGH MAY 31, INCLUSIVE, DURING ANY YEAR.

10) STORMWATER RUNOFF FROM IMPERVIOUS SURFACES SHALL BE CONTROLLED TO PREVENT THE

WASHING OF DEBRIS INTO THE WATERWAY.

11) CULVERTS SHALL BE CONSTRUCTED AND ANY RIPRAP PLACED SO AS NOT TO OBSTRUCT THE

MOVEMENT OF AQUATIC SPECIES, UNLESS THE PURPOSE OF THE ACTIVITY IS TO IMPOUND

WATER.

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FINAL GRADING PLAN

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CIVIL

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DESIGNED BY

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DISCIPLINE

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TYPE

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DATE

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BUILDING NAME

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SHEET NO.

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SERC

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100%%% SUBMISSION

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AutoCAD SHX Text 20160482/50088876

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EJG

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EJG

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GSG

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OF 20

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CONTEES WHARF ROAD EDGEWATER, MD

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GREEN VILLAGE SITE INFRASTRUCTURE

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ST-TTL.DWG

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SCALE : 1"=20'

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GRAPHIC SCALE(S)

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KEY PLAN

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AutoCAD SHX Text I HEREBY CERTIFY THAT THESE DOCUMENTS WERE PREPARED OR APPROVED BY ME, AND THAT I AM DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MARYLAND, LICENSE NO. 17155, EXPIRATION DATE: 17155, EXPIRATION DATE: , EXPIRATION DATE: NOVEMBER 27, 2020..

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