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Pacific Earth Works, Inc. is
the leader in Green Roofs/Roof Garden
installation in the Northwest. We’re certified
installers of the following systems:
http://www.zinco.com
Lake Union Floating Home
General Contractor:
Envirotecture Construction Corporation
System:
American Hydrotech, Inc.
Type: Extensive (built up)
Size: 400 sf
Description: Unique wrap
around green roof surrounding the outdoor patio
area of a new floating home. This green roof is
a built up system featuring vegetated sedum
tiles and a small vegetation-free gravel ballast
zone.
Multicare Good Samaritan
Hospital
General Contractor: Skanska
USA Building Inc.
Landscape Architect:
Walker-Macy
System:
American Hydrotech, Inc.
Type: Extensive (built up)
Size: 14,000 sf
Description: 14,000 square feet of extensive
green roofs on roof levels 4 & 5. Scope of work
including installation of drainage layers,
separation filter fabrics, edging, growing
media, automatic sub-surface irrigation systems,
erosion control netting, paver walkways,
drainage access boxes, planting, and 2 years of
maintenance.
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Amazon Building B34
General Contractor: GLY
Construction, Inc.
Landscape Architect:
Walker-Macy
Type: Intensive & Extensive
Size: 6,000 sf
Description: Work included
ground level and right of way planters,
over-structure plaza planters, Rain Gardens,
2nd, 3rd, 11th, and 12th floor terrace planters,
as well as a 6,000sf extensive green roof on top
of the restored and historic Terry Avenue
Building. Unique aspects included moving
materials to all terraces after the tower crane
had been removed and transplanting of a 50’ tall
(14”-16” caliper) Scarlet Oak Tree.
Bastyr University Student
Housing Green Roofs
Owner's Representative:
Architek
System:
Zinco
Type: Extensive (built up)
Size: 2,300 sf
Description:
Installation of four separate extensive green
roof areas atop new student housing buildings.
Seattle Center 5th Ave N
Garage
General Contractor: Sellen
Construction Company
Landscape Architect:
Gustafson Guthrie Nichol Ltd.
System:
American Hydrotech, Inc.
Type: Extensive (built up) &
Intensive
Size: 60,000 sf
Description: Owned by the
Bill & Melinda Gates Foundation, this 60,000
square foot extensive green roof project
included hoisting and installation of drainage
components, aluminum edging, concrete paver
maintenance border, pop-up spray irrigation
system, rooting substrate, and 2,000,000 sedum
plugs and cuttings. Also included was
installation of large trees on structure, and
site perimeter landscaping all with drip
irrigation system.
Wesley Square
General Contractor: Turner
Construction Company
Landscape Architect: GGLO
System: LA Design
Type: Extensive (built up) &
Intensive
Size: 3,100 sf
Description: This project
featured extensive and intensive built-up
systems as well as on-grade landscaping,
irrigation, site furnishings, water feature and
pedestal-set pavers.
PTOI Elder Center Green
Roof
General Contractor: BN
Builders, Inc.
Landscape Architect: Nakano
Landscape Architects
System:
American Hydrotech, Inc.
Type: Extensive (built up)
Size: 12,000 sf
Description: A large
extensive Hydrotech built-up system including
drainage layers, protection fabric, soil,
irrigation, plantings and erosion control
fabric.
The "Bart Harvey" Green
Roof (Cascade Senior Center)
General Contractor: Synergy
Construction, Inc.
Landscape Architect: Susan
Black & Associates
System:
Soprema
Type: Extensive (built up) &
Intensive
Size: 4,200 sf
Description: Extensive and
intensive Soprema built-up systems as well as
on-grade landscaping, irrigation, gravel
ballast, edging and rubber pavers on roof.
Epiphany School
General Contractor: Sellen
Construction Company
Landscape Architect: Johnson
Southerland
System:
Xeroflor
Type: Extensive
(pre-vegetated mat)
Size: 300 sf
Description: In conjunction
with a full on-grade landscape installation
including site furnishings, this project
includes a smaller but unique pre-vegetated mat
green roof system with gravel ballast and
irrigation.
Issaquah High School
General Contractor:
Cornerstone Construction
Landscape Architect: Cascade
Design Collaborative
System: Columbia
Green AVRS
Type: Extensive (modular
tray)
Size: 4,000 sf
Description: 4,000 sf Green
Roof using Columbia Green’s AVRS Tray System
with an assortment of NW Sedum cuttings and a
few potted natives. Temporary Irrigation was
provided.
UW/Snyder Roofing
Demonstration Roof
UW Design Team
System: Various
Type: Extensive (built up
and pre-vegetated mat)
Size: 3,000 sf
Mukilteo City Hall
Warranty Replacement
System: American
Hydrotech, Inc.
Type: Extensive (built up)
Size: 3,000 sf
PRS Mirabella
General Contractor: Turner
Construction Company
Landscape Architect: Robert
H. Foster Consultants
System: LA Design
Type: Extensive (built up) &
Intensive
Size: 7,000 sf
Swedish Medical Center -
South Addition, Phase II
General Contractor: Lydig
Construction Inc.
Landscape Architect: Atelier
Landscape Architects
System: LA Design
Type: Intensive
Size: 11,000 sf
Description: On
structure/roof top and on grade planters and
lawns with associated drain rock, irrigation,
planting and mulching.
UW Medical Center
Expansion
General Contractor: Skanska
USA Building Inc.
Landscape Architect:
SiteWorkShop, LLC
System: LA design &
LiveRoof
Type: Intensive (LA
designed) & Extensive (modular tray)
Size: 3,100 sf
UW Molecular Engineering
Green Roof
General Contractor: Hoffman
Construction Company
Landscape Architect:
Walker-Macy
System:
Xeroflor
Type: Extensive
(pre-vegetated mat)
Size: 5,000 sf
Federal Reserve Bank
General Contractor: Hoffman
Construction Company
Landscape Architect: Murase
& Associates
System: LA Design
Type: Semi-intensive
Size: 2,000 sf
Description: This project included a
semi-intensive roof garden which featured trees,
shrubs, ground cover and perennials. This was
in addition to the on-grade landscape which
included extensive concrete block retaining
walls, irrigation, drainage, fine lawns and
meadow plantings, ornamental plantings, a
retention pond with 30,000 emergent plantings,
river cobble mulch and reinforced turf pavement
system.
UW Conibear Shellhouse
General Contractor: Sellen
Construction Company
Landscape Architect: SiteWorkShop,
LLC
System: LA Design
Type: Intensive
Size: 2,000 sf
UW Surgery Pavilion
General Contractor: Hoffman
Construction Company
Landscape Architect: SiteWorkShop,
LLC
System: LA Design
Type: Intensive
Size: 8,000 sf
 
Two Union Square
General Contractor: Turner
Construction Company
Landscape Architect: The
Berger Partnership
System: LA Design
Type: Intensive
Size: 20,000 sf
Seafirst Avenue Plaza
Landscape Architect: Richard
Carothers Associates
System: LA Design
Type: Intensive
Size: 10,000 sf
GTE Plaza
Landscape Architect: Richard
Carothers Associates
System: LA Design
Type: Intensive
Size: 4,000 sf
Honeywell
Landscape Architect: Richard
Carothers Associates
System: LA Design
Type: Intensive
Size: 2,000 sf
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