Figure 1. Plan Overview with Schedules for Windows and Doors

Accessor Parcel Number: 057900-0175

Scale: 1” = 10’

Camachr

LU Issued

FIGURE 3-1. FIRST LEVEL FLOOR PLAN

Scale: 1” = 3’

1936 NW 99th Street, Seattle,

WA 98177

Parcel # 057900-0175

SDCI Project #: 3022916, 6488248

NORTH

33

32 31

34

35

37

30

29

27

28

38

19

17

21

36

25

12

3

5

7

11

8

9

10

2

15

8

FIGURE 3-2. SECOND LEVEL FLOOR PLAN

1936 NW 99th Street, Seattle,

WA 98177

Parcel # 057900-0175

SDCI Project #: 3022916, 6488248 Scale: 1” = 3’

NORTH

25

18

18

18

18

37

38

27 27

30 1936 NW 99th Street, Seattle,

WA 98177

Parcel # 057900-0175

SDCI Project #: 3022916, 6488248

NORTH

Scale: 1” = 3’

FIGURE 3-3. LOWER LEVEL FLOOR PLAN

Figure 4. Roof Plan

NORTH

PROPERTY ADDRESS: 1936 NW 99TH

STREET, SEATTLE, WA 98177

TAX PARCEL #: 057900-0175

SDCI PROJECT #: 3022914, 6488248

Scale 1” = 4’

EAST VIEW OF ROOF

NORTH VIEW OF ROOF

SOUTH VIEW OF ROOF

WEST VIEW OF ROOF

ELEVATION 263.5 FT

Overall 263.5 FT

Roof Top 258.5 FT

Second Level 249.5 FT

First Level 240.5 FT

Average Grade Level

234 FT

Lower Level 231.5 FT

Ground 226 FT SOUTH EAST

WEST NORTH

Figure 5. Elevation

Plan 1936 NW 99th Street, Seattle, WA 98177

Parcel # 057900-0175

SDCI Project # 3022914, 6488248

Garage Entrance

Grade Average Level calculation is based on SDCI

Director’s Rule 4-2012.

Use Formula 1: The Grade Average Level = 234.3 FT

NON-DISTURBANCE AREA

(for both wetland and

Steep Slope)

NW 100th St

PROPOSED

HOUSE

RIP

AR

IAN

AR

EA

95.23’

Center Line of NW 99th Street

20’

FRONT

YARD

20’ FRONT YARD

SIDE YARD 5’

5’ SIDE YARD

Marker 1

Marker 2

Marker 3

50’

Wetland

51’

9.5’ 14.2’ 22.3’

12.9’

20.5’

16.1’

6.2’

11.6’

10’

Sewer, Water, Gas,

Power, cable/phone

Tree

Tree

PL 74.69’

PL 74.69’

PL 95.23’

PL 95.23’

30’

15’

SCALE: 1” = 13.5’

SITE PLAN

PROPERTY ADDRESS: 1936 NW 99TH

STREET, SEATTLE, WA 98177

PROPERTY OWNER: QIAN ZHANG

TAX PARCEL #: 057900-0175

SDCI PROJECT #: 3022914, 6488248

WETLAND AREA = 346 SQFT

TOTAL LOT SIZE = 7112 SQFT

DEVELOPMENT AREA = 1557 SQFT

TOTAL STEEP SLOPE AREA = 5270 SQFT

OVERALL PERCENTAGE OF INTRUSION

INTO STEEP SLOPE = 29.5% < 30%

RIPARIAN AREA = 280 SQFT

LOT COVERAGE = 16%

AVERAGE GRADE LEVEL = 233.26 FT

NOTES:

Markers are surface mounted monuments in

accordance with Director’s Rule 4-2007

Stormwater pipe will lay on the surface

and its placement will not require any

ground disturbance and will be outside of

wetland buffer area.

Updated on 1/27/17 per ECA Wetland Correction Notice #5

3’

4’

Marker 5

Marker 6

Marker 7

Marker 8

Utility Lines:

A –Sewer, Trenched;

B – Water, Trenched;

C – Gas, Trenched;

D – Power, Overhead;

E – Cable/Phone, Trenched

57’

Wetland Buffer

Boundary

Utility lines Entrance

Land Disturbing Area: Marker 1,2,3,8,7,6,5 (inside red lines);

Access on NW 100th St: Driveway Entrance Markers 5 and 6;

Utility lines will be outside of the tree protection area.

21’

Stormwater;

see Note

MODIFIED WETLAND

DELINEATION BOUNDARY

NW 100th Street

PROPOSED

HOUSE

RIP

AR

IAN

AR

EA

95.23’

74.69’

Center Line of NW 99th Street

20’

FRONT

YARD

20’ FRONT YARD

SIDE YARD 5’

5’ SIDE YARD

Marker 1

Marker 2

Marker 3

50’

Wetland

51’

9.5’ 14.2’ 22.3’

12.9’

20.5’

16.1’

6.2’

11.6’

10’

Power

Tree

Tree

PL 74.69’

PL 74.69’

PL 95.23’ PL 95.23’

30’

15’

SCALE: 1” = 13.5’

MODIFIED WETLAND

DELINEATION BOUNDARY

PROPERTY ADDRESS: 1936 NW 99TH

STREET, SEATTLE, WA 98177

TAX PARCEL #: 057900-0175

SDCI PROJECT #: 3022914, 6488248

*Stormwater pipe will lay on the surface

and its placement will not require any

ground disturbance.

LEGAL DESCRIPTION

LOTS 16, 17, 18 BLOCK 3, THE BAYVIEW

ADDITION TO SALMON BAY, ACCORDING

TO THE PLAT THEREOF RECORDED IN VOL.

34 OF PLATS, PAG 77, RECORDS OF KING

COUNTY, WASHINGTON

3’

4’

Marker 5

Marker 8

NOTE: Markers are surface mounted monuments in accordance with Director’s Rule 4-2007

Stormwater

Pipe Location *

Notes: 1. A perimeter drain/dewatering system should be installed to reduce the potential for groundwater entering into foundation and slab areas.

2. The subgrade beneath a structural floor system should be graded so that water does not pond. In addition, drain laterals that span the crawl space are recommended to prevent ponding of water within the crawlspace.

3. As a minimum, the subsurface drainage system should consist typically of 4-inch minimum diameter perforated rigid PVC pipe surrounded by at least one pipe diameter of free draining gravel. The pipe should be wrapped in a geosynthetic to prevent fine soils from clogging the system in the future. The pipe should drain by gravity to a suitable all-weather outlet or to a properly designed area underdrain system. Surface cleanouts of the perimeter drain should be installed at minimum serviceability distances around the addition. A properly constructed drain system can result in a reduction of moisture infiltration of the subsurface soils. Drains which are improperly installed can introduce settlement or heave of the subsurface soils and could result in improper surface grading only compounding the potential issues.

4. The entire design and construction team should evaluate, within their respective field of expertise, the current and potential sources of water throughout the life of the structure and provide any design/construction criteria to alleviate the potential for moisture changes.

5. In general, proper surface drainage should be maintained at this site during and after completion of construction operations. The ground surface adjacent to buildings should be sloped to promote rapid run-off of surface water. A minimum slope of six inches in the first five horizontal feet for landscaped or graveled areas is recommended. These slopes should be maintained during the service life of buildings.

6. Landscaping should be limited around building areas. Irrigation should be minimal and limited to maintain plants. Roof downspouts should discharge on splash-blocks or other impervious surfaces and directed away from the building. Ponding of water should not be allowed immediately adjacent to the building.

7. It is important to follow these recommendations to minimize settling of the foundation elements throughout the life of the facility. Construction means and methods should also be utilized which minimizes saturation of soils during construction.

8. Positive drainage away from the new structures is essential to the successful performance of foundations and flatwork, and should be provided during the life of the structure. Paved areas within 10 feet of structures should slope at a minimum of 2 percent away from foundations, and landscape areas within 10 feet of structures should slope away at a minimum of 8 percent. Downspouts from all roof drains, if any, should cross all backfilled areas such that they discharge all water away from the backfill zones and structures. Drainage should be created such that water is diverted away from building sites and away from backfill areas of adjacent buildings.

1936 NW 99th Street Drainage Plan

Notes:

1. Existing corrugated pipe that captures and direct runoff from the neighborhood

above is shown on the left.

2. The proposed storm water drainage system will not use this pipe.

3. The proposed drainage system will use a larger pipe and direct runoff to the

existing drainage collection point at NW 99th Street.

4. The overall drainage capacity from the subject lot will not increase after the

development. Therefore the proposed development will not adversely impact the

drainage capacity of the existing corrugated pipe that captures and directs runoff

from the neighborhood above.

Figure 6. Storm Water Drainage System - continued 1936 NW 99th Street, WA 98177

Parcel # 057900-0175

DPD Project # 3022914, 6488248

Site Plan Calculation:

1. Wetland

According to the wetland report generated b the Wetland Professional Scientist (WPS), the wetland area inside the subject lot is

approximately 346 SQFT.

Figure 3. Non-disturbance Area

2. The percentage of the wetland area among the total lot area: 346 ft2 / 7050 ft2 = 5%

According to the wetland report by the Wetland Professional Scientist:

3. Stream:

According to the wetland report, Riparian Management Area is located in the northwest corner of the property. The proposed

construction is outside this area. The area of Riparian Management Area is 280 SQ FT.

4. Steep Slope:

According to the ECA Topographic Survey performed by Chadwick & Winters, the area of on-site step slopes 40% or greater =

5,270 SQFT or 74% of the total parcel area. (Note 8 from ECA Topographic Survey)

5. LOT COVERAGE

The area of footprint of all structures on the entire lot = 1114 ft2; Lot size = 7112 ft2 according to Topographic Survey

Lot coverage = 1114 / 7112 = 16 %

According to Seattle Land Use Code (23.44.010), homes (principle structures) and associated structure may cover 35% of the lot

on lots 5,000 square feet in area. Lot coverage requirement is met.

6. AVERAGE GRADE LEVEL = 234.3 FT.

7. Yards: The lot has the following features:

(1) The yard borders both NW 99th Street and NW 100th Street;

(2) The yard is a through lot ( a lot with two street frontage opposite of each other);

(3) The yard is on a sloping lot that is greater than 35 percent.

6’

16’

The area of

structural roots

traveling north of

the trunk –

No Construction

An ISA certified

arborist to be

present to inspect

2’

FENCE

REQUIREMENT