ADDENDUM 1 to Purchase and Sale Agreement 750 Ridder Park Drive, San Jose

The Agreement reflects the full and complete agreement of the Parties, except with regard to certain matters relating to the environmental condition of the Property and the responsibility of the respective Parties with regard to those conditions.

Buyer, in light of the facts that the contemplated sale is an AS IS sale and that the Seller is not providing an indemnity with regard to environmental conditions, desires to conduct additional due diligence with regard to the environmental conditions and such additional due diligence requires an extension of the Inspection Period (see Section 7.1 of the Agreement).

Seller, as further consideration for the Buyer accepting the Property AS IS and without an environmental indemnity by Seller, has offered to extend the Inspection Period for the Buyer and to complete certain additional inspections and work with regard to the condition of the Property.

The Inspection Period set forth in Section 7.1 of the Agreement shall remain in effect for all feasibility and inspection items, except with regard to environmental conditions. With regard to environmental conditions, the Inspection Period shall end at 5:00 PM California time on Tuesday, October 15, 2013. Buyer shall deliver the Title Objection Notice (see Section 6.2 of the Agreement) to Seller on or before Monday, September 23, 2013.

The Closing shall occur on Wednesday, October 30, 2013 or such earlier date mutually agreed by the Parties.

Seller shall conduct the additional testing and remediation work set forth in Exhibit A.

Buyer, at Buyer’s sole discretion and expense, may continue to conduct its due diligence investigation of the environmental condition of the Property in accordance with the terms of

The surrender dates set forth in the draft Lease attached as Exhibit B to the Agreement shall be modified as follows:

The reference to two (2) business days in line 44 of Section 17 of the Agreement shall be deemed corrected to reference five (5) business days.

Except as specifically modified by this Addendum, all other provisions of the PSA remain in full force and effect.

Testing of one passenger elevator shaft in the west hallway (just north of the original passenger elevator previously tested) and any necessary remediation.

Testing of the pumping and treatment vault (below grade in the front lawn) for the moat in front of the main building and any necessary remediation.

Testing of the truck wash area (Seller will saw cut a 6'x6' section, excavate 3' below grade, sample & test materials for nickel that showed in the initial boring tests) and any necessary remediation. The excavated area will be back-filled with clean soil, compacted and repaved.

Testing of the oil storage area (two excavations, one for each sump grate) and any necessary remediation. The excavated area will be back filled with clean soil, compacted and repaved.

Removal of the four (4) clarifier vaults located between the Fleet Maintenance Building and Main Building and any necessary remediation of conditions. Because the effluent waste flow out of the showers and restrooms in the Fleet Maintenance Building currently flows through these vaults, the showers and restrooms will not be operational after the removal of the vaults. These facilities may be restored by Buyer by completing a connection to the main sewer line. In the event that the cost of removal of the clarifier vaults exceeds $50,000, Seller, at Seller’s election, may allow a $50,000 credit to Buyer in escrow in lieu of completing this work.

Removal of the three vehicle lifts and any necessary remediation of conditions.