NCPC File #: 6541 Harry S Building (DoS Headquarters) Perimeter Security Improvements

2201 C Street, NW

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United States Department of State

Final Site and Building Plans Project Information

Commission meeting date: September 8, 2016 NCPC review authority: Federal Projects in the District 40 U.S.C. § 8722(b)(1) and (d) Applicant request: Final approval of site and building plans Delegated / consent / open / executive session: Open NCPC Review Officer: Lee NCPC File number: 6541

Project summary: The Department of State (DOS) has submitted final site and building plans for the perimeter security improvements at the Harry S Truman (HST) Building, located at 2201 C Street, NW. The Commission reviewed and approved the preliminary site and building plans at its October 1, 2015 meeting, the current submission addresses previous comments and develops further the stormwater management and landscape plan, refines the pocket park design and includes materials selection for hardscape, streetscape and the exterior of the D Street pavilion. The applicant has continued the extensive coordination process with different government agencies and the end result is an improved project that will set an example of sustainability while improving the public space and addressing strict perimeter security requirements.

The HST Building is the 2.5 million square-foot headquarters of the DOS, located on an 11.8-acre site. The site is bounded by 21st Street to the east, C Street to the south, 23rd Street to the west, D Street, the E Street Expressway ramp and Virginia Avenue to the north. The HST building was constructed in two separate phases, almost twenty years apart. The original portion, referred to as the “Marshall Wing,” was built in 1941 to serve the War Department and encompasses the northeast quadrant of the HST Building.A significant L-shaped building expansion was completed in 1960. The expansion, referred to as the “New State,” occupies the remainder of the four-square-block site and wraps around the original building. The HST building is eligible for the National Register of Historic Places and is a contributing element to the Northwest Rectangle Historic District. The American Pharmacist Association and the National Academy of Sciences are located directly to the south; the Old Naval Observatory is located to the west; the Federal Reserve Martin Building is located to the east; the Pan American Health Organization and the Retired Foreign Services Officers Club are located to the north. The site is located within close proximity to George Washington University Campus, and adjacent to the .

2 Project Information

Project summary continued:

As an Interagency Security Committee (ISC) Level V building, the HST building requires an increased level of protection. The plan’s objectives are to secure the building, protect employees and visitors, and improve the streetscape by creating an attractive environment for pedestrians. The project entails relocating employee and visitor screening from the interior of the building to new security pavilions at four of the building entrances; providing guard booths for vehicular security screening; increasing the sidewalk width; developing a protective barrier system; relocating the existing truck inspection facility; realigning curbs to address vehicular standoff distances and significant landscape improvements, including low impact development (LID) features. The proposed perimeter security will replace temporary security barriers with permanent security measures to enhance the aesthetic appearance and pedestrian environment consistent with the civic character of the context.

The construction of the perimeter security improvements will be implemented in two phases. NCPC is reviewing final plans for Phase I of the project, which consists of a 5,100 square-foot security pavilion along D Street, and perimeter site improvements along D, 21st, C, 22nd and 23rd Streets. Phase II, which will be submitted at a future date, includes additional security pavilions along 23rd, C, and 21st Streets, and restoration of adjacent lobbies to their original condition.

3 Site Location

4 Historic District Boundaries and Contributing Elements

5 Existing Conditions

6 Existing Conditions

7 Existing Conditions – D Street Entrance

8 Proposed Phasing Plan

9 Proposed Site Plan

10 LID Scheme Plan

11 Preliminary Submission LID Section – Tree Root Path

“Ensure sufficient planting space for proposed and mature trees by evaluating the placement of security element foundations within planting areas in an effort to maintain healthy root systems.” 12 Final Submission LID Section – Tree Root Path

13 Bio retention and LID Precedent Photos

14 21st Street Plan and Elevation

15 21st Street Enlarged Plan

“Promote pedestrian flow by aligning bollards consistently with architectural elements to minimize disruption of pedestrian circulation and achieve a graceful transition between different security and architectural elements.”

16 21st Street Enlarged Plan

Preliminary Submission - Jogger’s Entrance / 21st Street Final Submission - Jogger’s Entrance / 21st Street

“Provide additional seating to enhance the pedestrian experience, including outside of the jogger’s entrance.”

17 21st Street Section – Diplomacy Center Entrance

18 21st Street Section – Flowering Trees and Rail

19 Preliminary Submission - 21st Street Diplomacy Center Entrance

“Further develop the design for the proposed benches, bollards and railings to ensure a seamless integration of streetscape and security elements.” 20 Final Submission 21st Street Diplomacy Center Entrance

21 21st Street Axonometric

22 C Street Plan and Elevation

23 C Street Section – Guard Entrance

24 C Street and 21st Street – Guard Booth Perspective

25 23rd Street Plan and Elevation

26 23rd Street – Typical Plan Enlargement

27 23rd Street – Sections

23rd Section – Rail and Bench 23rd Section – Bump out wall and bench

28 23rd Street – Streetscape Axonometric

29 D Street – Plan and Elevations

30 D Street – Pocket Park

Benches Benches Bicycle Rack

D Street Stone-clad Stone Veneer Wall Wall

Preliminary Submission Final Submission Pocket Park Enlarged Plan – D and 23rd Street Intersection Pocket Park Enlarged Plan – D and 23rd Street Intersection

“Explore a more interesting and intimate seating arrangement, and consider relocating the bicycle rack in order to make the corner more visible and inviting, and Explore an alternative security treatment around the northwest planting area to avoid redundant layers of solid walls that obstruct visibility.” 31 D Street – Pocket Park

32 Preliminary Submission - D Street – Pocket Park

33 Final Submission - D Street – Pocket Park

34 D Street Section - Pocket Park

35 D Street Section – Truck Inspection Area

36 D Street Entrance Demolition

37 D Street Pavilion Floor Plan

38 D Street Pavilion Elevations and Sections

39 D Street Pavilion Perspective - Preliminary

40 D Street Pavilion Perspective - Final

41 Guard Booths

42 Security Elements Diagram

43 Typical Bollard Layout

44 Typical Bollard and Rail Layout

45 Typical Wall Layout

46 Existing Amenities - Benches

47 Proposed Amenities - Benches

48 Existing Amenities – Bike Racks

49 Proposed Amenities – Bike Racks

50 Proposed Amenities – Pocket Park

51 Planting Diagram – Trees to remain and remove

52 Planting Diagram – Proposed Trees

53 Tree Context Diagram – Existing

54 Tree Context Diagram – Existing and Proposed

elms Swamp white oaks

Willow oaks

55 Planting Images – Trees

56 Planting Images – Trees

57 Planting Images – Shrubs and Groundcovers

58