December 15, 2006

Mr. Marc MelinkoffChristopher A. Joseph & AssociatesEnvironmental Planning and Research30851 Agoura Road, Suite 210Agoura Hills, CAUSA 91301

Re: Wind Impact AssessmentMarina del Rey TowerMarina del Rey, CaliforniaRWDI Reference No. 07-1161

Email: marc.melinkoff@cajaeir.comDear Mr. Melinkoff:

As per your request, this letter summarizes our professional opinion on the effect of theproposed Marina del Rey Tower on wind conditions within the adjacent Basins, thepotential loss of surface winds used by birds and the general air circulation in Marina delRey.

This wind impact assessment includes a review of the project drawings, aerial photographs,regional wind data, the results of previous wind studies conducted by RWDI on projects inMarina del Rey, and our knowledge and experience. A qualitative study in lieu of a fullwind tunnel model study is appropriate for the current development, considering thelocation and size of the development, the local wind directionality and the availability of testdata from other projects in the area.

Description of Proposed Development

Schematic drawings and renderings for the proposed project were provided by ChristopherA. Joseph & Associates on November 24 and 29, 2006 and can be found in Appendix A.The proposed development is a residential tower of 25 storeys (approximately 366 ft high)with a seven-storey podium (approximately 80 ft high). This tower is located betweenLincoln Boulevard and Admiralty Way, approximately 450 ft northeast of Basin F.

Local Wind Directionality

Figure 1 shows the directional distribution of seasonal winds, based on long-term windrecords from the nearby Los Angeles International Airport. These wind roses show thepercentage of the time that wind blows from each of the 16 compass directions during thespring, summer, fall and winter seasons between 7:00 am and 9:00 pm, when most sailingwould occur. It is evident that winds from the west, west-southwest, southwest and eastdirections are most dominant throughout the year.

Wind-tunnel Studies for Other Local Developments

Of the many wind studies conducted by RWDI on projects in Marina del Rey since the1990's, both the Fisherman’s Village and the13900 Fiji Way project are on the east side ofthe Main Channel, similar to the current development.

In our September 17, 2004 report1 for the Fisherman’s Village, it was concluded that Atheproposed Fisherman’s Village will not affect the existing wind conditions over a majority ofthe areas of Marina del Rey. There will be areas of altered wind speeds and directions in theMain Channel adjacent to the proposed development when winds are from the east. This isnot an issue considering the boating activities in these localized areas. Due to the localizednature of these changes and the low frequency associated with the easterly winds, there willbe no significant effect on the general air circulation patterns within the Main Channel andBasins in Marina del Rey.”

The Fisherman’s Village development was four storeys in height. The wind tunnel studyillustrated that easterly winds flowing around the development had basically resumed theirexisting direction and speed approximately 300 ft downwind of the development, and that500 ft away there was no perceivable difference between the existing and proposedconfigurations.

The 13900 Fiji Way project consisted of four towers, ranging in height from 80 ft to 140 ft.Again, the wind tunnel study illustrated that easterly winds flowing around the developmenthad generally resumed their existing direction/speed approximately 400 ft downwind fromthe site, and by 1000 ft downwind there was no impact.

Effect on Sailing Conditions

When winds flow around a building, accelerations occur around the windward buildingcorners and decelerations in the wake area on the leeward side of the building. Highturbulence in the wake area is usually associated with variations in both wind direction andspeed.

1. RWDI Project Number 04-1692, Wind Study, Fisherman’s Village, Marina del Rey, California.

December 15, 2006Mr. MelinkoffChristopher A. Joseph & Associates Page 3

The proposed Marina del Rey Tower is located 450 ft to the northeast of Basin F, which ison the east side of the Main Channel, and runs in a southwest and northeast direction.When winds are from the most frequent west-southwest and west directions, theacceleration and deceleration zones around the proposed facility will mainly be on land, noton the water surface.

The westerly and southwesterly winds will accelerate around the southeast corner of theproposed development and alter the wind speed and direction in the area immediate east ofthe development. As the west winds are frequent, accelerations at the base of the towercould occur on a regular basis. It is a positive design feature to not include any entrances inthe vicinity of the southeast corner of the development, as this area is expected to havelocalized accelerations due to the alignment of the tower with the prevailing winds. Whenwinds are from the east direction, the wind effect will extend onto Admiralty Park, west ofthe proposed facility. These effects are not expected to extend into Basin F.

With the proposed development in place, wind conditions would not change in other Basinsor in the Main Channel of Marina del Ray for any wind directions.

Loss of Surface Winds Utilized by Birds

In order to assess the effect of changes to surface winds on birds, a report (see Appendix B)was prepared by an expert in aerodynamics, kinematics and the behavior of birds, in whichthe author of the report considered the following issues:

$ the types of birds likely to inhabit Marina del Rey,

$ the ability of birds to take off and land,

$ soaring conditions upwind and downwind of the proposed building,

$ effects on local thermal soaring conditions, and

$ changes in flight efficiency due to turbulence.

It is our opinion that the minimal changes in the existing wind fields due to the proposeddevelopment will result in no significant change to the birds= use of the area.

Change of Air Flow Patterns

Changes in wind speed and direction patterns are expected in the immediate vicinity of theproposed development. Due to this localized nature, there will be no perceived effect on thegeneral air circulation patterns within Marina del Rey.

December 15, 2006Mr. MelinkoffChristopher A. Joseph & Associates Page 4

Closing

In conclusion, while localized variations in wind speed and direction are likely to occur inAdmiralty Park, the proposed Marina del Rey Tower is expected to have minimal effect onwind conditions in the adjacent Basins and the Main Channel, the potential loss of surfacewinds used by birds and the general air circulation in Marina del Rey. The above opinion isbased on the design information of the Marina del Rey Tower, local wind directionality,previous wind studies in the Marina del Rey area, and our experience and engineeringjudgment. If you have any questions in this regard, please do not hesitate to contact us.

Yours very truly,

ROWAN WILLIAMS DAVIES & IRWIN Inc.

Tahrana Lovlin, P.Eng.Project Engineer

Dan BaconSenior Project Manager / Associate

HW/DEB/yioAttach.

FIGURES

Directional Distribution of Seasonal Winds(7:00 am - 9:00 pm)Los Angeles International Airport (1947 - 1990)

Marina del Rey Tower, California Project #07-1161

Figure No. 1

Date: December 1,2006

SPRING(March, April, May)

SUMMER(June, July, August)

WINTER(December, January, February)

FALL(September, October, November)

APPENDIX A

405

10

105

110

91

405

110

1

710

101

1

1

5

10

405

42

90

Los Angeles

Long Beach

Torrance

Inglewood

Glendale

0 2 4 6 8

Miles

Pacific Ocean

SITE LOCATION

Exhibit 1Regional Map

Source: ESRI Data and Maps; Data: June 2006; Author. Christopher A. Joseph & Associates.

Miles

0 42 31

Legend

Admiralty ParkAdmiralty Park

1

90

Lincoln Blvd

Fiji Way

Admiralty Way

Mindanao Way

MaxellaAve

Glencoe Ave

Bali Way

Thatcher Ave

Del Rey Ave

Berkeley Dr

YaleAve

Carter Ave

RedwoodAve

Princeton Dr

Marina Pointe Dr

Stanford Ave

La Villa Marina

Burrell S

t

0 250 500 750 1,000

Feet

Marina Del Rey

Source: ESRI Data and Maps; Date: June 2006; Author: Christopher A. Joseph & Associates. Exhibit 2Vicinity Map

Source: Christopher A. Joseph & Associates, 2006.

Feet

0 1000500 750250

Legend

Project Site

PROJECT SITE

Figure III-2West ElevationScale (Feet)

0 10050 7525

Source: Murhpy/Jahn, 2006.Legend

Source: Murphy/Jahn Architects, 2006.

Scale (Feet)

0 00 00

Legend

Feet

0 10050 7525 Figure III-3Building Section

Source: Murphy/Jahn Architects, March 31, 2006.

Scale (Feet)

0 00 00

Legend

Figure III-4Proposed Site Plan

APPENDIX B