AGREEMENT FOR PURCHASE AND SALE

                                       OF

                                  REAL PROPERTY


                                 BY AND BETWEEN


                                PMC-SIERRA, INC.,
                             A DELAWARE CORPORATION

                                    AS SELLER

                                       AND

                             WB MISSION TOWERS, LLC,

                      A DELAWARE LIMITED LIABILITY COMPANY,

                                    AS BUYER



                                  JUNE 29, 2003

                              PROPERTY LOCATED AT:

                               3985 FREEDOM CIRCLE
                             SANTA CLARA, CALIFORNIA




                         AGREEMENT FOR PURCHASE AND SALE
                                       OF
                                  REAL PROPERTY


         THIS AGREEMENT FOR PURCHASE AND SALE OF REAL PROPERTY (the "Agreement")
is dated as of the 29th day of June,  2003 by and between  PMC-SIERRA,  INC.,  a
Delaware  corporation  ("Seller" or "PMC"), and MISSION TOWERS,  LLC, a Delaware
limited liability company ("Buyer" or "Westbrook").

                                    RECITALS

         A. PMC, as tenant,  and WHTS Freedom Circle  Partners II, LLC ("WHTS"),
as  landlord,  are parties to that  certain  Lease dated as of July 20, 2000 (as
amended,  the "WHTS  Lease"),  pursuant  to which PMC  leases the  Property  (as
hereinafter defined) from WHTS.

         B. In addition,  PMC, as buyer, and WHTS, as seller,  have entered into
that  certain  Agreement  for Purchase and Sale dated as of the date hereof (the
"WHTS Agreement"), pursuant to which PMC or an affiliate of PMC has the right to
acquire the fee interest in the  Property  from WHTS, a true and correct copy of
which has been delivered to Buyer.

         C. Seller  desires to sell the Property to Buyer,  and Buyer desires to
purchase the Property from Seller,  upon and subject to the terms and conditions
of this Agreement

                                    AGREEMENT

         NOW  THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency  of which is hereby  acknowledged,  Seller and Buyer hereby agree as
follows:

         1. Definitions. Unless the context otherwise specifies or requires, for
the  purposes of this  Agreement  all words and  phrases  having  their  initial
letters capitalized herein shall have the meanings set forth below:

         "Adjacent Property" shall mean the real property owned by WHTS Freedom
Circle Partners, L.L.C., a Delaware limited liability company, commonly known as
3975 Freedom Circle, Santa Clara, California, and more particularly described in
Exhibit R to this Agreement.

         "Closing  Certificates" shall mean the Seller Closing Certificate to be
delivered  to Buyer on the  Closing  Date in the form of  Exhibit  O,  including
therewith the WHTS Closing  Certificate,  which is to be delivered to Seller for
the benefit of Seller and Buyer upon the closing of the Seller's  acquisition of
the Property  from WHTS, in the form of Attachment A to Exhibit O (or such other
form as Buyer will accept in its discretion).

         "Closing Date" shall mean the date of recordation of the Deed.

         "Closing  Documents" shall mean the Closing  Certificates,  the Parking
Easement Agreement, the Reliance Letter, and the Development Indemnity Agreement
and, if applicable, the WHTS Modification Indemnity.

         "Contingency  Period" shall mean the period  commencing on the Contract
Date and terminating at 11:00 a.m. Pacific Time on July 2, 2003.

         "Contract Date" shall mean June 11, 2003.

         "Development  Indemnity  Agreement" shall mean a Development  Indemnity
Agreement  in the form set  forth in  attached  Exhibit  S, to be  executed  and
recorded in the office of the Santa Clara County Clerk Recorder,  on or prior to
the Closing Date, by WHTS and WHTS Freedom  Circle  Partners,  L.L.C. a Delaware
limited liability company (as the owner of the Adjacent Property).

         "Environmental   Insurance  Policy"  shall  mean  an  insurance  policy
insuring  against  loss  and  liability  as a  consequence  of the  presence  of
legionella bacteria in the Property after the Closing Date in such form and from
such insurer and with such coverages, deductibles, and exclusions as Buyer shall
approve during the  Contingency  Period and insuring Buyer and naming Seller and
such other parties as Buyer shall  designate  during the  Contingency  Period as
additional insureds.

         "Environmental  Laws" shall mean any and all  federal,  state and local
laws,  statutes,  rules,  regulations,  requirements  under permits  issued with
respect  thereto,  and  other  requirements  of  any  federal,  state  or  local
governmental agency, court, board, bureau or other authority having jurisdiction
with respect to or relating to the environment, to any Hazardous Substance or to
any  activity  involving  Hazardous  Substances,   and  shall  include,  without
limitation,  the  Comprehensive   Environmental  Response,   Compensation,   and
Liability  Act  (42  U.S.C.   Section  9601,  et  seq.,  the  Federal   Resource
Conservation  and  Recovery  Act (42  U.S.C.  Section  6901,  et  seq.)  and all
amendments thereto in effect as of the Closing Date.

         "Hazardous  Substances" shall mean and include any chemical,  compound,
material, mixture, waste or substance that is defined or listed in, or otherwise
classified  pursuant  to, any  Environmental  Laws as a  "hazardous  substance,"
"hazardous   material,"   "hazardous   waste,"   "extremely   hazardous  waste,"
"infectious   waste,"  "toxic   substance,"   "toxic  pollutant"  or  any  other
formulation  intended  to define,  list,  or  classify  substances  by reason of
deleterious   properties   such  as   ignitability,   corrosivity,   reactivity,
carcinogenicity,  or toxicity including any petroleum,  natural gas, natural gas
liquids,  liquified natural gas, or synthetic gas usable for fuel (or mixture of
natural  gas  and  such  synthetic  gas)  and  including   legionella  bacteria.
"Hazardous Substances" shall include, without limitation, any hazardous or toxic
substance,  material or waste or any chemical,  compound or mixture which is (i)
asbestos, (ii) designated as a "hazardous substance" pursuant to Section 1317 of
the Federal Water Pollution Control Act (33 U.S.C.  Section 1251 et seq.), (iii)
defined as a "hazardous  waste" pursuant to Section 6903 of the Federal Resource
Conservation and Recovery Act, (42 U.S.C.  Section 6901 et seq., (iv) defined as
"hazardous   substances"   pursuant  to  Section   9601  of  the   Comprehensive
Environmental  Response,  Compensation and Liability Act, 42 U.S.C. Section 9601
et seq.), or (v) listed in the United States Department of Transportation  Table
(49  CFR  172.101)  or by  the  Environmental  Protection  Agency  as  hazardous
substances (40 CFR part 302); or in any and all amendments  thereto in effect as
of the  Closing  Date;  or  such  chemicals,  compounds,  mixtures,  substances,
materials or wastes  otherwise  regulated under any applicable  local,  state or
federal Environmental Laws.

         "Hillmann" shall mean Hillmann  Environmental  Company, Inc., now known
as Hillmann Environmental Group.

         "Improvements"   shall  mean  all  improvements  and  fixtures  now  or
hereafter  located on the Land including,  without  limitation,  the twelve (12)
story  building  (the  "Building")  constructed  on the Land,  together with all
appurtenances thereto and all apparatus, equipment and appliances located on the
Land and owned by Seller and used in connection with the operation and occupancy
thereof  such  as  systems  or   facilities   for  heating,   ventilation,   air
conditioning,  climate control,  utility  services,  parking  services,  garbage
disposal, irrigation and/or recreation, and all landscaping.

         "Intangible  Property" shall mean Seller's rights,  title and interests
in: (a) any and all  transferable  or  assignable  permits,  building  plans and
specifications,  certificates  of occupancy,  operating  permits,  sign permits,
development  rights  and  approvals,  certificates,   licenses,  warranties  and
guarantees,  trade names,  service marks,  engineering,  soils, pest control and
other reports relating to the Property, tenant lists, advertising materials, and
telephone  exchange  numbers  identified  with the  Property;  and (b) all other
transferable  intangible property,  miscellaneous rights, benefits or privileges
of any kind or character with respect to the Property.

         "Land"  shall mean the real  property  commonly  known as 3985  Freedom
Circle, Santa Clara, California, and more particularly described in Exhibit A to
this Agreement, and all rights and interests appurtenant thereto,  including but
not  limited  to  rights  under the  Parking  Easement  Agreement  and all other
easements,  riparian or other water  rights,  rights of way and other  interests
appurtenant  thereto,  and all right, title and interest of Seller in and to any
land lying in the bed of any street,  road, highway or avenue, open or proposed,
in front of,  adjacent to or adjoining  such real property and in all strips and
gores.

         "Laws and Restrictions" shall mean all applicable federal, state, local
and other laws,  statutes,  regulations,  codes,  orders,  ordinances  and rules
including,  without  limitation,  those  relating  to fire,  safety,  land  use,
subdivision,   health,   labor,   environmental   protection,   seismic  design,
conservation,   parking,  handicapped  access,  zoning  and  building,  and  all
restrictive  covenants (if any), other title  encumbrances and other obligations
affecting the Property, all Environmental Laws, all applicable provisions of the
Fair Housing Act of 1968 and the Americans  With  Disabilities  Act of 1990, and
all amendments thereto.

         "Material Exception" is defined in Section 4(c)(ix).

         "Parking Easement Agreement" shall mean that certain Easement Agreement
dated July 6, 2000, and recorded on September 22, 2000 as Document No.  15400202
in the office of the Santa  Clara  County  Clerk  Recorder,  as amended by First
Amendment dated October 31, 2000,  recorded as Document No. 15445030 on November
2, 2000, by and between Seller and WHTS Freedom Circle Partners,  L.L.C., as the
same shall be amended  and  restated  (and  recorded  in the office of the Santa
Clara  County  Clerk  Recorder)  on the  Closing  Date as set forth in  attached
Exhibit J.

         "Permitted Exceptions" shall mean the exceptions to title identified as
items 1 through 14,  inclusive,  on  Schedule B, Part 2 of the Title  Commitment
attached hereto as Exhibit I.

         "Personal  Property" shall mean all personal  property now or hereafter
owned by WHTS and  conveyed to Seller,  or otherwise  owned by Seller,  which is
used in  connection  with the  Land,  the  Improvements  and/or  the  Intangible
Property or the ownership or operation thereof  including,  without  limitation,
all furniture,  fixtures,  machinery,  appliances  and equipment  located on the
Property,  other than personal property owned by tenants of the Property. A list
of the Personal Property is attached hereto as Exhibit C.

         "Property"  shall mean  collectively  the Land, the  Improvements,  the
Personal Property, and the Intangible Property.

         "Reliance Letter" shall mean a letter in the form of Exhibit Q attached
hereto addressed to Buyer and duly signed by Hillmann.

          "Scheduled Closing Date" shall mean July 7, 2003.

         "Title Commitment" shall mean that title commitment issued by the Title
Company for an ALTA Extended  Coverage  Owner's Policy of Title Insurance in the
amount of the Purchase Price (Form B, Rev. 10/17/70), and including a commitment
for the following endorsements: CLTA endorsements numbered 100 (modified) 100.6,
103.4, 103.7, 116, 116.1, 116.4, 116.7 and 123.2, a "Fairway" endorsement, and a
"separate tax parcel" endorsement, which is attached hereto as Exhibit I.

         "Title  Company"  shall  mean First  American  Guaranty  Company  whose
address for this transaction is as follows:

         First American Guaranty Company
         1737 North First Street, Suite 100
         San Jose, California  95112
         Attn:  Mike Hickey
         Fax No. (408) 451-7836

         "Title Policy" is defined in Section 4(c)(i).

         "WHTS Modification  Indemnity" shall mean a WHTS Modification Indemnity
in the form set forth in attached  Exhibit T as described  in Sections  4(c)(ix)
and (x).

         2. Purchase And Sale.  Seller agrees to sell the Property to Buyer, and
Buyer agrees to purchase the Property from Seller,  subject to and on all of the
terms,  covenants and  conditions  set forth in this  Agreement.  Within one (1)
business day following the Contract Date,  Seller shall  designate  Buyer as the
"Buyer Party" under the WHTS Agreement.

         3.  Purchase  Price.  The total  purchase  price for the Property  (the
"Purchase  Price")  shall  be  the  sum of  $32,750,000  which,  subject  to all
prorations and adjustments provided in this Agreement, shall be paid by Buyer to
Seller through escrow on the Closing Date as follows:

              3.1 Deposit.  Prior to the expiration of the  Contingency  Period,
provided  Buyer does not elect to terminate  this  Agreement in accordance  with
Section 4 below,  Buyer  shall  deposit  with the Title  Company  the  amount of
$3,000,000  (the  "Deposit"),  which sum the Title  Company  shall  deposit in a
federally  insured  interest-bearing  "money  market"  account  at  a  financial
institution  reasonably  acceptable to Buyer with the interest from such account
to be credited to Buyer.

              3.2 Cash Payment.  The balance of Purchase  Price shall be paid by
Buyer to  Seller  or,  if  Seller  so  directs,  to WHTS,  by wire  transfer  in
immediately available federal funds on the Closing Date.

         4. Review And Inspection; "As-Is" Purchase; Conditions To Agreement.

                   (a) Review And  Inspection.  During the  Contingency  Period,
Buyer,  as the "Buyer Party" under the WHTS  Agreement,  shall have the right to
conduct, at its sole cost and expense,  such investigations,  studies,  surveys,
analyses and tests on and of the Property as it shall,  in its sole  discretion,
determine are necessary or desirable, including, without limitation, soil tests,
environmental audits and studies, and make such evaluations as Buyer may, in its
sole and absolute  discretion,  determine are  necessary or desirable  under the
circumstances,  provided  that (i) the Buyer's right to enter upon and undertake
samples,  tests,  and  borings  are  subject to and shall  comply  with the WHTS
Agreement,  including as  appropriate  the  obtaining of consent of WHTS and the
maintenance of insurance, in accordance with such agreement,  (ii) Buyer, as the
"Buyer  Party"  under the WHTS  Agreement  shall  only have the right to conduct
soils and groundwater tests and borings regarding the environmental condition of
the  Property  with  Seller's  prior  written   consent,   which  shall  not  be
unreasonably  withheld or delayed,  (iii) Buyer shall  maintain a Three  Million
Dollar ($3,000,000)  combined,  single limit,  comprehensive  general commercial
liability  insurance  policy with respect to the Property,  issued by a licensed
insurance  company naming Seller,  WHTS and WHTS' property manager as additional
insureds and its consultants and  subcontractors  engaging any  investigation of
the Property  shall carry at least a One Million Five  Hundred  Thousand  Dollar
($1,500,000) combined, single limit,  comprehensive general commercial liability
insurance  policy while on or about the  Property;  and (iv) Buyer shall defend,
indemnify,  protect and hold WHTS, the Property, Seller and Seller's affiliates,
members, subsidiaries,  officers, directors and agents harmless from and against
any loss, cost,  damage, or expense (including  without  limitation,  reasonable
attorneys'  fees)  incurred by Seller as a result of property  damage,  personal
injury, or mechanics' liens, to the extent arising out of Buyer's inspections of
the Property or Improvements.  Without limiting the generality of the foregoing,
Buyer agrees to pay WHTS and/or Seller,  upon demand,  the cost of repairing and
restoring  any damage or  disturbance  which Buyer or its agents or  contractors
cause to the  Property.  Notwithstanding  the  foregoing,  Buyer  shall  have no
liability  for the  discovery  of any  matters  in, on, at, or  relating  to the
Property.  The indemnity  contained in this Section 4(a) shall survive the close
of escrow or  termination of this  Agreement.  In order to perform the foregoing
investigations, during the Contingency Period, Buyer, its potential lenders, and
the agents,  contractors,  and employees for said parties shall have  reasonable
access  to the  Property,  all for the  purposes  of  inspecting  the  same  and
conducting  tests,  inspections,  and  analyses  thereon and making  evaluations
thereof,  all at Buyer's  expense.  Buyer shall not be  permitted to conduct any
borings,  drillings,  soils  tests,  or  groundwater  tests on the  Property  in
connection with the preparation of an environmental  audit or in connection with
any other  inspection  of the  Property  without  the prior  written  reasonable
consent of Seller and WHTS. Buyer shall schedule and coordinate all inspections,
including, without limitation, any environmental tests, with Seller and WHTS and
shall give Seller and WHTS at least one (1) business  day's prior notice of such
test and the ability, if Seller or WHTS may so desire, to take split samples (at
no  additional  expense to Buyer).  Seller and WHTS shall be  entitled to have a
representative present at all times during each such inspection. Seller has made
available to Buyer the documents,  plans,  studies  (environmental or otherwise)
and  reports  listed on Exhibit M attached  hereto to the extent the same are in
Seller's possession or control.  Except as specifically set forth in Section 5.1
of  this  Agreement  or  the  Seller  Closing   Certificate,   Seller  makes  no
representation  or warranty  relating to the  validity of such  information  and
Buyer is  responsible  to verify such  information  at its  discretion.  Nothing
contained in this Section 4(a) shall (i) limit the  representations,  warranties
or  indemnities  made by WHTS under the WHTS  Closing  Certificate  or the other
Closing Documents or Buyer's rights and remedies against WHTS thereunder or (ii)
limit the  representations or warranties made by Seller under the Seller Closing
Certificate  and/or Section 5.1 of this Agreement.  In conducting the inspection
of the Property,  Buyer shall at all times comply with all laws and  regulations
of all applicable governmental authorities,  and Buyer shall not contact or have
any discussions with any of WHTS' employees, agents or representatives,  or with
any  contractors  providing  services to the Property  unless in each case Buyer
obtains the prior  consent of WHTS,  it being  agreed that all such  contacts or
discussions  shall,  pending any such  approval,  be directed to Carl Shannon at
(415) 536-1850.

                   (b) Termination During Contingency Period.  Buyer may, at any
time during the Contingency  Period,  for any reason or no reason, (i) terminate
this Agreement by delivering to Seller its written  notice of termination  prior
to the  expiration  of the  Contingency  Period,  or (ii)  waive  its  right  to
terminate this Agreement by, prior to the expiration of the Contingency  Period,
(a)  waiving its  termination  right in writing  and  delivering  such waiver to
Seller, (b) timely delivering the Additional  Deposit to the Title Company,  and
(c) delivering to Seller either (x) a pro forma of the  Environmental  Insurance
Policy or (y) its written waiver of the condition precedent set forth in Section
4(c)(xii). In the event Buyer (1) fails to provide a written waiver of its right
to terminate in accordance with the foregoing no later than 5 p.m.  Pacific time
on the last day of the Contingency  Period,  (2) fails to deposit the Additional
Deposit with the Title Company no later than 5 p.m. Pacific time on the last day
of the Contingency  Period,  or (3) fails to either deliver the pro forma of the
Environmental  Insurance  Policy to Seller or deliver its election in writing to
waive the condition precedent set forth in Section 4(c)(xii),  by 5 p.m. Pacific
time on the  last day of the  Contingency  Period,  then  this  Agreement  shall
automatically  terminate.  In the event of any  automatic  termination  or other
termination by Buyer pursuant to this Section 4(b), (x) the Initial  Deposit and
all other funds  deposited in escrow by Buyer and all  interest  accrued on such
funds (less  Buyer's share of any escrow and title  cancellation  fees) shall be
returned immediately to Buyer, (y) all documents deposited in escrow by Buyer or
Seller shall be returned to the depositing  party,  and (z) Buyer shall promptly
deliver to Seller, at no cost to Seller, and without representation or warranty,
the originals or copies of all tests,  reports and  inspections of the Property,
which do not  restrict  such  delivery to a third party,  made and  conducted by
Buyer or for Buyer's benefit which are in the possession or control of Buyer and
promptly return to Seller copies of all materials delivered by Seller or WHTS to
Buyer and shall  destroy all copies and abstracts  thereof,  and except for this
Section  and the  provisions  of  this  Agreement  that  expressly  survive  the
termination of this  Agreement,  this Agreement shall be null and void and of no
further  force and effect,  and neither  Seller nor Buyer shall have any further
rights or obligations hereunder.

                   (c)  Conditions  Precedent.  Seller's  obligation to sell the
Property to Buyer shall be conditioned  upon (A) the acquisition of the Property
by PMC or its  affiliate on the terms set forth in the WHTS  Agreement  (or such
other  terms  reasonably  acceptable  to  Seller),  and (B) the  issuance of (or
irrevocable  commitment of the applicable insurer to issue concurrently with the
close of escrow)  the  Environmental  Insurance  Policy.  In  addition,  Buyer's
obligation  to purchase the Property  shall be  conditioned  expressly  upon the
fulfillment  of each of the  following  conditions  precedent  on or before  the
Closing Date:

                        (i)  The   issuance  by  the  Title   Company,   or  the
irrevocable  binding  commitment of the Title Company to issue, to Buyer, on the
Closing   Date,   conditioned   only  upon   payment  of  the  Title   Company's
regularly-scheduled  premium, the title policy ("Title Policy") described in the
Title Commitment,  including the endorsements described in the Title Commitment,
insuring Buyer that fee simple  absolute  title to the Property is vested,  free
and clear of all liens and encumbrances except for the Permitted Exceptions.

                        (ii) Subject to Section 8 of this Agreement, there shall
have been no material  adverse  change in the condition of the Property,  or any
portion thereof.

                        (iii) There are no  contracts,  other than the Permitted
Exceptions,  that  certain  Master  License  Agreement  dated  May 4, 2001 by an
between  TishmanSpeyer  Properties and Ad Walls,  LLC, and any other  agreements
approved in writing by Buyer,  which will affect the Property or be binding upon
Buyer on or after the Closing Date.

                        (iv)  From and  after the  Contract  Date,  WHTS has not
failed in any  material  respect to perform the items  described  in clauses (i)
through (vi) of Section 5.3(a) below.

                        (v) From  and  after  the  Contract  Date,  WHTS has not
removed or permitted  the removal of any Personal  Property or any fixtures from
the  Property  except to the  extent  such  items were  replaced  with  Personal
Property or fixtures of equal or greater value.

                        (vi) The acquisition of fee title to the Property by PMC
or its affiliate, and the termination of the WHTS Lease.

                        (vii) The  execution,  acknowledgement,  and delivery by
WHTS and the owner of the Adjacent  Property of an Amended and Restated  Parking
Easement  Agreement  in the form  attached  hereto as Exhibit J to  escrow,  the
recordation  thereof in the office of the Santa Clara County Clerk  Recorder and
the recorded  subordination  thereto by the holder of any deed of trust or other
foreclosable document or instrument currently encumbering the Adjacent Property,
all on or prior to the Closing Date.

                        (viii) The  execution and delivery by Hillmann to escrow
for delivery to Buyer at the close of escrow of the Reliance  Letter,  provided,
however,  that if the Reliance  Letter is not then in fact delivered to Buyer at
the close of  escrow,  this  condition  shall be deemed to have  failed.  Seller
cannot and does not make any warranty or  representation  whatsoever  concerning
the  completeness  or the  accuracy of any  matters  contained  in the  Reliance
Letter.

                        (ix) The  execution by the parties  thereto and delivery
to escrow  for the  delivery  to Buyer at the  close of  escrow  of the  Closing
Certificates; provided however, that if the Closing Certificates are not then in
fact delivered to Buyer at the close of escrow this condition shall be deemed to
have  failed.  Notwithstanding  the  foregoing,  if WHTS  includes any matter on
Schedule 2 to the WHTS Closing  Certificate and all matters on Schedule 2 to the
WHTS Closing Certificate, when taken together, constitute a "Material Exception"
(as  hereinafter  defined),  Buyer  shall  have  the  right  to  terminate  this
Agreement.  Upon any such termination,  upon Buyer's demand, the Deposit will be
returned by the Title  Company to Buyer (and Seller  shall so instruct the Title
Company)  and,  subject to the  provision for  reimbursement  of expenses  under
certain  circumstances set forth in this Section 4(c)(ix),  this Agreement shall
terminate and be of no further force or effect, except for those provisions that
expressly survive the termination hereof. If this Agreement is not so terminated
by Buyer,  then Seller and Buyer shall consummate this transaction in accordance
with this  Agreement.  If WHTS  includes  any  matter on  Schedule 2 to the WHTS
Closing  Certificate,  but all of the matters on Schedule 2 to the WHTS  Closing
Certificate  do  not  in the  aggregate  constitute  a  Material  Exception  (as
hereinafter  defined),  then (1) Buyer  shall  have no right to  terminate  this
Agreement  pursuant to this Section 4(c)(ix),  and (2) the additional  condition
precedent  described in Section 4(c)(x) shall apply and (3) subject to the terms
and  conditions  of this  Agreement,  Seller  and Buyer  shall  consummate  this
transaction  without any  abatement  in the  Purchase  Price as a result of that
matter (so long as the  condition  precedent  described  in  Section  4(c)(x) is
satisfied).  Furthermore,  if Buyer  terminates this Agreement  pursuant to this
Section  4(c)(ix)  and a matter  set  forth on  Schedule  2 to the WHTS  Closing
Certificate,  which alone or together with other matters  thereon,  gave rise to
the termination right, makes the  representations and warranties made by WHTS in
Section 5.1 of the WHTS  Agreement  false when made (a copy of which Section 5.1
is  attached  hereto as Exhibit B, and which  shall not be  modified by Seller),
then Seller, upon Buyer's written request, shall pay to Buyer an amount equal to
all of Buyer's  out-of-pocket  costs  incurred by Buyer in connection  with this
transaction,  including but not limited to its legal  expenses  relating to this
transaction,   non-refundable  loan  fees,  and  its  studies,  inspections  and
investigations of the Property during the Contingency Period, but in no event to
exceed $250,000 provided, however, that Seller's obligation to make this payment
shall be limited to the amount  collected by Seller (and Seller  shall  exercise
its  reasonable and diligent  efforts to so collect) (or which could  reasonably
have been collected by Seller,  assuming all  reasonable  diligence in attempted
collection)  pursuant to Section  4(c)(viii)  of the WHTS  Agreement  (a copy of
which Section  4(c)(viii) is attached hereto as Exhibit D and which shall not be
modified by Seller). For the purposes of this Section 4(c)(ix),  the matters set
forth on Schedule 2 to the WHTS Closing  Certificate shall be deemed a "Material
Exception,"  if, but only if, all of the  matters  included on Schedule 2 to the
WHTS Closing Certificate,  when taken together,  would reasonably be expected to
result in  additional  cost,  expense,  liability  and/or damage to Buyer (after
factoring in all cost of litigating, resolving, and/or defending the matter, any
reduction in the fair market value of the Property,  any  contingent  liability,
and the cost of any delay in the  lease-up  of the  Property)  in excess of Five
Hundred  Thousand  Dollars  ($500,000).  The provisions of this Section 4(c)(ix)
shall  survive the close of escrow and the  termination  of this  Agreement.  In
addition,  the provisions of this Section 4(c)(ix) shall be subject to Section 8
of this Agreement and shall not apply to any events covered thereunder.

                        (x) If,  but  only  if,  required  pursuant  to  Section
4(c)(ix)  above,  the  delivery to escrow for  delivery to Buyer at the close of
escrow of the WHTS Modification  Indemnity;  provided however,  that if the WHTS
Modification  Indemnity  is not then in fact  delivered to Buyer at the close of
escrow this  condition  shall be deemed to have  failed.  The WHTS  Modification
Indemnity  shall be subject  to the  limitations  set forth in the WHTS  Closing
Certificate.

                        (xi) The  execution,  acknowledgement,  and  delivery to
escrow  by WHTS  and the  owner  of the  Adjacent  Property  of the  Development
Indemnity  Agreement and the recordation of the Development  Indemnity Agreement
in the office of the Santa Clara County Clerk  Recorder,  all on or prior to the
Closing Date.

                        (xii)  The  issuance  of  the  Environmental   Insurance
Policy. Buyer shall use good faith efforts to obtain the Environmental Insurance
Policy, and Seller shall reasonably  cooperate with Buyer in connection with the
obtaining of the Environmental Insurance Policy.

                        (xiii)  The  performance  by Seller  of its  obligations
under Section 6.3 of this Agreement.

At any time or times on or before the Scheduled  Closing  Date,  Buyer may waive
any of the foregoing  conditions by written notice to Seller. Other than Buyer's
close  of  escrow  pursuant  to  this  Agreement  which  shall  waive  all  such
unfulfilled  conditions,  no waiver  shall be  effective  unless made in writing
specific as to the conditions or matters so waived.

In the event  that any of the  conditions  precedent  to Buyer's  obligation  to
purchase the Property in this Section 4(c) are not satisfied or otherwise waived
by  Buyer on or  before  July 8,  2003  (other  than a  failure  of a  condition
precedent caused by a breach of Buyer's obligations under this Agreement),  then
Buyer shall have the right to terminate  this  Agreement by delivering to Seller
written notice of such  termination in which event the Deposit shall be returned
immediately  to  Buyer.  If Buyer  terminates  this  Agreement  pursuant  to the
preceding sentence and the failure of such condition precedent was caused by the
breach by WHTS of the WHTS Agreement or a breach by Seller under this Agreement,
then Seller, upon Buyer's written request, shall pay to Buyer an amount equal to
all of Buyer's  out-of-pocket  costs  incurred by Buyer in connection  with this
transaction,  including but not limited to its legal  expenses  relating to this
transaction and its studies, inspections and investigations of the Property (but
excluding loan fees),  but in no event to exceed $175,000.  Seller's  obligation
under the  preceding  sentence  shall not be subject to the  $100,000  floor set
forth in the last paragraph of Section 5.1.


                   (d) AS IS Purchase.  Buyer  acknowledges that Buyer will have
had the  opportunity  to conduct  prior to the Closing  Date,  such  studies and
investigations  of the Property as Buyer  desires,  and that Buyer will have had
the  right to  observe  to its  satisfaction,  and  will  have  observed  to its
satisfaction,  the  physical  characteristics  and  condition  of the  Property.
Nothing  contained  in this  Section  4(d) shall (i) limit the  representations,
warranties or indemnities made by WHTS under the WHTS Closing Certificate or the
other Closing  Documents or Buyer's rights and remedies  against WHTS thereunder
or (ii) limit the  representations or warranties made by Seller under the Seller
Closing  Certificate  and/or Section 5.1 of this Agreement.  Except as expressly
set forth in the Closing  Documents or this Agreement,  Buyer  acknowledges  and
agrees  that  the  Property  is to be  purchased  and  accepted  by Buyer in its
condition  as of the  Closing  Date,  "AS IS",  without  any  implied or express
warranty or  representation  by Seller or anyone  acting or purporting to act on
Seller's behalf ("Seller's Agents"),  and with all patent and latent defects. No
representations  or  warranties,  express or implied  regarding  the Property or
matters  affecting  the  Property  have been or will be made with respect to the
Property  or the  subject  matter of this  Agreement  (i) by Seller or  Seller's
Agents,  except as expressly set forth in the Seller Closing  Certificate and/or
Section 5.1 of this Agreement,  or (ii) by any other person or entity (including
without  limitation  WHTS,  or anyone  acting or claiming to act on WHTS' behalf
(other than Seller and Seller's  Agents)),  except as expressly set forth in the
Closing  Documents.  Without limiting the foregoing,  Buyer acknowledges that no
representation   is  or  will  be  made   concerning  the  physical   condition,
environmental,  economic,  or legal  condition of the Property,  title to or the
boundaries of the Property,  topography,  climate, air, water rights, utilities,
leases,  water, present and future zoning,  physical condition,  soil condition,
pest control matters, engineering characteristics, traffic patterns, purposes to
which  the  Property  may  be  suited,   value,   potential   for   development,
contamination,  drainage,  access to public roads,  proposed  routes of roads or
extensions  thereof,  and  compliance  with  building,   health,   safety  laws,
Environmental  Laws,  land use laws and regulations to which the Property may be
subject or any other matter in any way  affecting  the  Property,  or the use or
ownership thereof (herein  collectively the "Property Matters") (i) by Seller or
Seller's Agents, except as expressly set forth in the Seller Closing Certificate
and/or  Section  5.1 of this  Agreement,  or (ii) by any other  person or entity
(including,  without  limitation,  WHTS or anyone  acting or  claiming to act on
WHTS' behalf (other than Seller and Seller's  Agents)),  except as expressly set
forth in the Closing Documents.  Buyer  acknowledges  that,  although Seller has
disclosed,  made  available,  or caused  WHTS to make  available  documents  and
reports  concerning  the  Property,  that  Seller  cannot  and does not make any
warranty  or  representation  whatsoever  concerning  the  completeness  or  the
accuracy of  information  contained in such documents and reports and that Buyer
is not relying upon any such representations and warranties, other than (i) with
respect to Seller and Seller's  Agents,  those expressly set forth in the Seller
Closing Certificate and/or Section 5.1 of this Agreement,  and (ii) with respect
to any other person or entity  (including,  without  limitation,  WHTS and those
acting or  purporting  to act on behalf of WHTS (other than Seller and  Seller's
Agents)),  those  expressly  set forth in the Closing  Documents.  Buyer further
acknowledges  that it has not  received  from Seller,  WHTS or anyone  acting or
claiming to act on their behalf,  any  accounting,  tax,  legal,  architectural,
engineering, property management,  environmental or other advice with respect to
this  transaction  and is relying solely upon the advice of its own  accounting,
tax, legal, architectural,  engineering, property management,  environmental and
other advisors.  Furthermore,  the  representations and warranties of Seller and
Seller's Agents set forth in this Agreement or otherwise made in any form (other
than in the  Seller's  Closing  Certificate)  are  merged  into  the deed at the
closing.

THEREFORE,  EXCEPT AS EXPRESSLY  SET FORTH IN SECTION 5.1 OF THIS  AGREEMENT AND
THE SELLER CLOSING  CERTIFICATE,  SELLER MAKES NO REPRESENTATIONS OR WARRANTIES,
EXPRESS OR IMPLIED,  DIRECTLY OR INDIRECTLY TO BUYER, AND SELLER IS TRANSFERRING
THE PROPERTY TO BUYER, AND BUYER IS PURCHASING THE PROPERTY FROM SELLER, WITHOUT
RECOURSE TO SELLER, IN ITS "AS IS" CONDITION ON THE CLOSING DATE, AND BUYER, FOR
THE EXPRESS  BENEFIT OF SELLER,  IS  ASSUMING ON THE CLOSING  DATE THE RISK THAT
ADVERSE PHYSICAL, ENVIRONMENTAL,  ECONOMIC OR LEGAL CONDITIONS MAY NOT HAVE BEEN
REVEALED  BY  ITS  INVESTIGATION;   PROVIDED,  HOWEVER,  THAT  NOTHING  IN  THIS
SUBPARAGRAPH  SHALL BE DEEMED TO BE A WAIVER  BY BUYER OF ANY  CLAIMS  BUYER MAY
HAVE AGAINST WHTS OR ANY PARTY (OTHER THAN SELLER AND SELLER'S  AGENTS) PURSUANT
TO THE WHTS CLOSING CERTIFICATE AND THE OTHER CLOSING DOCUMENTS.

The acknowledgments  contained in this Section constitute a conclusive admission
that  (a)  Buyer  is  a  sophisticated,  knowledgeable  investor  in  commercial
property,  and (b) without waiving any claims Buyer may have against WHTS or any
party  (other  than Seller and  Seller's  Agents)  pursuant to the WHTS  Closing
Certificate  and the other  Closing  Documents,  Buyer is  relying  upon its own
judgment  as to  any  matter  germane  to  the  Property,  or  its  purchase  or
contemplated use thereof, and not on the judgment of Seller or any Seller Agent,
and (c) except as expressly  set forth in the Seller  Closing  Certificate,  any
statement by Seller or any Seller  Agent with  respect to any  Property  Matter,
whether oral, written, constructive express or implied, is immaterial to Buyer.

Except with respect to any claims  against  Seller  arising out of any breach of
covenants,  representations  or  warranties  set  forth  in the  Seller  Closing
Certificate, effective as of the Closing Date, Buyer, for itself and its agents,
affiliates,  successors  and assigns  ("Buyer  Parties"),  hereby  releases  and
forever  discharges Seller,  its affiliates,  successors and assigns,  and their
respective officers, directors, shareholders, employees and agents, from any and
all rights, claims and demands at law or in equity,  whether known or unknown at
the time of this Agreement,  which Buyer has or may have in the future,  arising
out of the Property or the Property Matters, including,  without limitation, any
claims for  indemnification  or  contribution  arising  under the  Comprehensive
Environmental Response,  Compensation, and Liability Act (42 U.S.C. Section 9601
et seq.) or any  similar  federal,  state or local  statute,  rule or  ordinance
relating to liability of property owners for environmental  matters,  or arising
due to the presence of LPB (as defined in Section 5.2(c)) at the Property.

In giving the  foregoing  releases,  Buyer  expressly  waives the  provisions of
California  Civil  Code  Section  1542 as it  applies  to the  foregoing  mutual
release, which provides as follows:

                           "A general release does not extend to claims which
                           the creditor does not know or suspect to exist in his
                           favor at the time of executing the release, which if
                           known by him must have materially affected his
                           settlement with the debtor."

This Section 4(d) shall survive the close of escrow.  Buyer hereby  specifically
acknowledges that Buyer has carefully reviewed this subsection and discussed its
import with legal counsel and that  provisions of this subsection are a material
part of this Agreement.

         5. Representations, Warranties, Covenants And Agreements.

              5.1 Representations And Warranties Of Seller.  Seller hereby makes
the following  representations  and  warranties to and for the benefit of Buyer,
each of which  representations  and  warranties (i) is material and being relied
upon by  Buyer,  (ii) is made as an  inducement  to  Buyer to  enter  into  this
Agreement and consummate the transaction  contemplated  hereby, (iii) is true in
all  respects  as of the  date  of this  Agreement,  (iv)  shall  be true in all
material  respects  on the  Closing  Date,  and (v) shall  survive  the close of
escrow, but such survival shall be limited as set forth in this Section 5.1.

                   (a) Seller is a Delaware  corporation and has the full power,
authority  and  legal  right  to enter  into and  perform  this  Agreement.  The
execution,  delivery and performance of this Agreement have been duly authorized
by all necessary action on the part of the Seller.

                   (b)  Seller  has  no  actual  knowledge  of  any  pending  or
threatened  actions or  proceedings  before any court or  administrative  agency
which would reasonably be expected to materially adversely affect the ability of
Seller to perform Seller's obligations under this Agreement.

                   (c) Seller is not a "foreign  person" as defined in  Internal
Revenue  Code Section 1445 and any related  regulations.  At the closing,  Buyer
will have no duty to  collect  withholding  Taxes  for  Seller  pursuant  to the
Foreign Investment in U.S. Real Property Tax Act of 1980, as amended.

                   (d)  Seller  has not (i) made a  general  assignment  for the
benefit of  creditors,  (ii)  filed any  voluntary  petition  in  bankruptcy  or
suffered the filing of any involuntary petition by its creditors; (iii) suffered
the appointment of a receiver to take possession of all or substantially  all of
its assets;  or (iv) suffered the attachment or other judicial seizure of all or
substantially all of its assets.


                   (e)  Seller  has made  available  to Buyer  all  reports  and
documents  made  available  to Seller  by WHTS  pursuant  to the WHTS  Agreement
including,  without limitation, those listed on Exhibit M attached hereto to the
extent such  documents are in Seller's  possession or control,  and PMC does not
have  reason to  believe  that WHTS has failed to make  available  to Seller any
reports or documents in WHTS' control  relating to the physical,  environmental,
economic or legal  condition of the  Property;  provided,  however,  that Seller
cannot and does not make any warranty or  representation  whatsoever  concerning
the completeness or the accuracy of information  contained in such documents and
reports.

                   (f) There are no documents or reports in Seller's  possession
or under Seller's control, that contain information that would lead a reasonably
prudent buyer to conclude that the  physical,  environmental,  economic or legal
condition of the Property is  materially  and adversely  inconsistent  with that
represented  in the documents and reports made  available to Buyer prior to June
16, 2003.

The representations and warranties of Seller contained in this Section 5.1 shall
survive the Closing for one (1) year following the Closing Date (the "Limitation
Period") except that the Limitation  Period with respect to the  representations
and  warranties  of Seller  contained in clauses (b) and (e) of this Section 5.1
shall  be  two  (2)  years.   Each  such   representation   and  warranty  shall
automatically  be null and void and of no further force and effect following the
expiration of the applicable Limitation Period unless, prior to such expiration,
Buyer shall have  provided  Seller with a written  notice  alleging  that Seller
shall  be in  breach  of such  representation  or  warranty  and  specifying  in
reasonable detail the nature of such breach. Any legal proceeding against Seller
for such breach must be commenced,  if at all, within ninety (90) days after the
expiration of the applicable Limitation Period.

Notwithstanding  anything to the contrary set forth in this Agreement,  Seller's
liability  for breach of any  covenant,  representation  or  warranty  of Seller
contained in this Agreement and in any document  executed by Seller  pursuant to
this Agreement,  including any instruments delivered at Closing,  shall, subject
to the  limitations  of  survival  set forth in this  Section  5.1 be limited to
claims in excess of One Hundred  Thousand  Dollars  ($100,000)  in the aggregate
(but once the  aggregate  exceeds  $100,000,  Seller shall be liable to the full
extent of such claims),  and Seller's aggregate liability for any and all claims
arising out of any such  covenants,  representations  and  warranties  shall not
exceed Five Million Dollars ($5,000,000).

              5.2  Representations  And Warranties Of Buyer.  Buyer hereby makes
the following  representations  and warranties to and for the benefit of Seller,
each of which  representations  and  warranties (i) is material and being relied
upon by  Seller,  (ii) is made as an  inducement  to Seller  to enter  into this
Agreement and consummate the transaction  contemplated  hereby, (iii) is true in
all  respects  as of the  date  of this  Agreement,  (iv)  shall  be true in all
material  respects  on the  Closing  Date,  and (v) shall  survive  the close of
escrow:

                   (a) Buyer is a Delaware limited  liability company and it has
the full  power,  authority  and  legal  right to enter  into and  perform  this
Agreement.  The  execution,  delivery  and  performance  of this  have been duly
authorized by all necessary action on the part of Buyer.

                   (b)  Buyer  has not (i)  made a  general  assignment  for the
benefit of  creditors;  (ii)  filed any  voluntary  petition  in  bankruptcy  or
suffered the filing of any voluntary  petition by its creditors;  (iii) suffered
the appointment of a receiver to take possession of all or substantially  all of
its assets;  or (iv) suffered the attachment or other judicial seizure of all or
substantially all of its assets.

                   (c)  Buyer  expressly  acknowledges  that  it is  aware  that
legionella pneumophila bacterium ("LPB") has been present at the Property,  and,
except as expressly provided in the Closing  Certificates,  Buyer shall make and
rely solely on its own independent  investigation and WHTS'  representations and
warranties under the WHTS Closing Certificate with respect thereto.

              Buyer's  liability for breach of any covenant,  representation  or
warranty  of Buyer  contained  in the  Agreement,  shall be limited to claims in
excess of One Hundred Thousand Dollars ($100,000) in the aggregate,  and Buyer's
aggregate  liability for any and all claims  arising out of any such  covenants,
representations   and   warranties   shall  not  exceed  Five  Million   Dollars
($5,000,000).

              5.3  Agreements.  Each of Buyer  and  Seller  hereby  specifically
agrees as follows:

                   (a) From  the date of this  Agreement  to the  Closing  Date,
Seller shall use reasonable  efforts to enforce WHTS' obligations under the WHTS
Agreement to (i) manage,  maintain,  operate,  and service the Property,  to the
same  standard as existed at the  Contract  Date so as to keep the  Property and
every  portion  thereof in the same  working  order and repair as existed on the
Contract Date, (ii) not remove or permit the removal of any Personal Property or
any fixtures from the Property unless such items are replaced  immediately  with
Personal  Property or fixtures of equal or greater value,  (iii) comply,  in all
material respects,  with all Laws and Restrictions with respect to the Property,
(iv) not modify,  terminate,  cancel,  extend, or amend any lease,  contracts or
arrangements  which will affect the  Property or be binding upon the Buyer on or
after the Closing Date without the consent of Buyer,  which consent shall not be
unreasonably withheld,  conditioned or delayed, (v) not enter into any leases or
other  agreements  with respect to the occupancy,  maintenance or improvement of
the Property that continue after the Closing Date without  Buyer's prior written
approval (which Buyer may withhold in its sole discretion), and (vi) maintain in
full force and effect all of the insurance  policies and coverages  currently in
effect with  respect to the  Property.  From the date of this  Agreement  to the
earlier of the  Scheduled  Closing Date or the  termination  of this  Agreement,
Seller shall not lease,  sublease,  assign or otherwise transfer the WHTS Lease,
the  Property,  or any portion  thereof or interest  therein  (except to a party
which has assumed the obligations of Seller under this Agreement).

                   (b) Immediately upon its acquisition of the Property,  Seller
shall terminate the WHTS Lease, by merger or otherwise, if Seller acquires title
to the Property.

                   (c) Provided (i) all of the  conditions  precedent in Section
4(c) of this  Agreement and Section 4(c) of the WHTS  Agreement are satisfied on
or before the Closing Date,  (ii) this Agreement is not  terminated  pursuant to
Section 4(b) of this Agreement or otherwise in accordance with the terms of this
Agreement or applicable  law, (iii) WHTS fully tenders its performance of all of
its  obligations  under the WHTS  Agreement  to sell the  Property  to Seller in
accordance with the WHTS Agreement and (iii) Buyer fully tenders its performance
of all of its  obligations  under this  Agreement to purchase the Property  from
Seller in  accordance  with this  Agreement,  then  Seller  shall  purchase  the
Property  from WHTS as permitted by and in accordance  with the WHTS  Agreement;
provided,  however, that a failure in the foregoing shall not excuse performance
by Seller  hereunder to the extent such failure is caused by Seller's  breach of
this  Agreement or the WHTS Agreement or by the acts or omissions of Seller made
for the purpose of causing such failure.  Seller shall use reasonable efforts to
not cause the failure of any of the foregoing.

                   (d)  Seller  shall  promptly  notify  Buyer in writing of any
event or  circumstance  known  to  Seller  which  materially  adversely  affects
Seller's  ability to perform its  obligations  under this  Agreement in a timely
manner or the likelihood of timely satisfaction of the conditions  precedent set
forth above.

                   (e) Seller shall  promptly  notify Buyer in writing if Seller
becomes  aware  of  any  fact  or  occurrence  that  would  render  any  of  its
representations or warranties under Section 5.1 above untrue, or would render it
unable to deliver the Closing Certificates on the Closing Date.

                   (f)  Seller  shall pay at the close of escrow the cost of the
one-time  premium  for  the  Environmental   Insurance  Policy  (the  "Insurance
Premium") up to a maximum of Two Hundred Thousand ($200,000) and Buyer shall pay
at the  close of  escrow  the cost of the  Insurance  Premium  in excess of said
amount.

                   (g)  Seller  shall  promptly  forward  to  Buyer  any  notice
delivered  prior to the  Closing  Date by WHTS to  Seller  with  respect  to the
Property pursuant to the WHTS Agreement.

                   (h) On the Closing Date,  Seller shall deliver  possession of
the  Property  to Buyer  free and  clear of any  leases,  occupancy  agreements,
occupants or other parties in possession.

         6. TITLE, ESCROW AND CLOSING.

              6.1 Conditions Of Title. On the Closing Date, Seller shall deliver
to Escrow Holder a deed in the form attached hereto as Exhibit E (the "Deed").

              6.2 Closing Date.  Subject to the conditions  precedent herein set
forth,  through an escrow  established with the Title Company,  Buyer and Seller
shall  consummate this  transaction on the Scheduled  Closing Date or such other
date upon which Buyer and Seller may mutually agree.

              6.3 Deposits And  Deliveries By Seller.  Subject to the conditions
precedent  herein  set forth and the terms  and  conditions  of this  Agreement,
Seller shall deposit or cause to be deposited into escrow with the Title Company
for  delivery  to Buyer or such  person as Buyer  shall  designate,  or  deliver
directly to Buyer outside of escrow,  on or before the  Scheduled  Closing Date,
the following documents duly executed and acknowledged as required:

                   (a) The Deed.

                   (b) A Bill of Sale and  Assignment of Intangible  Property in
the form attached  hereto as Exhibit F  transferring  the Personal  Property and
Intangible Property to Buyer (the "Bill of Sale").

                   (c) An  Affidavit  of  Non-Foreign  Status  in form  attached
hereto as Exhibit H (the  "Non-Foreign  Affidavit)  and a California  Form 597-W
(the "California Affidavit").

                   (d) A Closing Certificate in the form of attached Exhibit O.

                   (e) Seller's  written escrow  instructions to close escrow in
accordance with the terms of this Agreement.

                   (f) Evidence  reasonably  acceptable to Buyer's  counsel that
the documents  delivered to Buyer by Seller at closing have been duly authorized
by Seller and duly executed on behalf of Seller.

                   (g)  Wire  transfer  of  immediately  available  funds in the
amount of Seller's obligation pursuant to Section 5.3(f) or a credit towards the
Purchase Price in such amount.

                   (h)  Such  other   documents,   resolutions,   consents   and
affidavits  required  to  effect  the  valid  consummation  of  the  transaction
evidenced by this Agreement.

              6.4 Deposits And  Deliveries By Buyer.  Subject to the  conditions
precedent  herein set forth,  Buyer shall deposit or cause to be deposited  into
escrow with the Title  Company  for  delivery to Seller or such person as Seller
shall designate,  or deliver directly to Seller outside of escrow,  on or before
the Scheduled  Closing Date,  each of the following  documents duly executed and
acknowledged as required and funds:

                   (a) Wire  transfer of  immediately  available  funds,  which,
together  with the  Deposit,  shall  equal the  Purchase  Price  (the  "Purchase
Funds").

                   (b)  Cash,   wire  transfer,   cashier's   check,   or  other
immediately  available  funds  covering  Buyer's  share  of  closing  costs  and
prorations.

                   (c) Intentionally Deleted.

                   (d)  A  closing  certificate   confirming  the  accuracy  and
completeness,  in  all  material  respects,  as of  the  Closing  Date  of  each
representation and warranty made herein by Buyer.

                   (e) Buyer's  written escrow  instructions  to close escrow in
accordance with the terms of this Agreement.

                   (f) Evidence  reasonably  acceptable to Seller's counsel that
the documents  delivered to Seller by Buyer at closing have been duly authorized
by Buyer and duly executed on behalf of Buyer.

                   (g) Intentionally Deleted.

                   (h)  Such  other   documents,   resolutions,   consents   and
affidavits  required  to  effect  the  valid  consummation  of  the  transaction
evidenced by this Agreement.

              6.5 Closing.  Upon  satisfaction of the conditions to the Closing,
the parties shall instruct the Title Company to close escrow by concurrently:

                   (a) Recording and arranging for delivery to Buyer of the duly
executed original Deed, showing all recording information.

                   (b) Issuing to Buyer the Title Policy.

                   (c) Recording the originals of, and arranging for delivery to
Buyer of one certified copy of the duly executed and recorded,  Parking Easement
Agreement  and  Development  Indemnity  Agreement  and  the  subordinations  and
recognitions thereto required by Sections 4(c)(vii) and (xi).

                   (d)  Delivering  or  arranging  for  delivery  to Buyer of an
original, duly executed Bill of Sale, the Non-Foreign Affidavit,  the California
Affidavit,   Seller's  Closing  Certificate,   WHTS  Closing  Certificate,  WHTS
Modification Indemnity (if applicable) and the Reliance Letter.

                   (e)  Delivering  to Seller (or as  directed  by  Seller)  the
Purchase Price, after deducting Seller's share of closing costs and prorations.

                   (f) Taking of all actions, and delivering to Buyer and Seller
of copies of all other documents and things deposited  and/or delivered  through
escrow as directed by the parties pursuant to their mutually  consistent  escrow
instruction.

              6.6  Prorations.  The costs and expenses of the Property  shall be
prorated as follows:

                   (a)  Maintenance  expenses and taxes,  insurance,  utilities,
management,  service and operating expenses shall be prorated between Seller and
Buyer as of the  Closing  Date.  Expenses  shall be prorated on the basis of the
actual number of days in a month.

                   (b) All items  subject to proration  pertaining to the period
prior to the Closing Date shall be credited to Seller,  and all such  prorations
pertaining  to the period on or following  the Closing Date shall be credited to
Buyer.  Seller,  Buyer and Title Company shall cooperate to produce prior to the
Closing  Date a schedule  of  prorations  to be made as of the  Closing  Date as
complete  and  accurate as  reasonably  possible.  All  prorations  which can be
liquidated  accurately or  reasonably  estimated as of the Closing Date shall be
made in escrow on the Closing Date.  All other  prorations,  and  adjustments to
initial  estimated  prorations,  shall  be made by  Buyer  and  Seller  with due
diligence  and  cooperation  within 30 days  following the Closing Date, or such
later time as may be required to obtain necessary information for proration,  by
cash payment to the party  yielding a net credit from such  prorations  from the
other party.  Such cash payment  shall be made within ten (10)  business days of
demand for payment by the party entitled to receive such payment.

                   (c) The  provisions  of this  Section  6.6 shall  survive the
close of escrow.

              6.7 Closing Costs.  Seller shall pay (i) the cost of the County of
Santa Clara transfer tax, (ii) the basic CLTA portion (with no  endorsements) of
the title  insurance  premiums  for the title  insurance  described in the Title
Commitment,  (iii)  one-half of all escrow fees and (iv) Seller's legal fees and
costs incurred in connection with the contemplated transaction.  Buyer shall pay
(i)  the  balance  of  the  title  insurance   premium   (including   costs  for
endorsements),  (ii) recording  fees,  (iii)  one-half of all escrow fees,  (iv)
Buyer's  legal  fees and costs  incurred  in  connection  with the  contemplated
transaction  and (v) all costs and  expenses  incurred  in  connection  with any
financing obtained by Buyer,  including without limitation,  loan fees, mortgage
recording taxes,  financing costs and lender's legal fees (if  applicable).  Any
applicable  city transfer tax shall be shared  equally by Buyer and Seller.  All
other closing costs shall be borne by Seller and/or Buyer in the manner which is
customary  in  the  county  where  the  Land  is  located.  Notwithstanding  the
foregoing,  if close of escrow fails to occur as a consequence of the default by
a party,  then such party shall pay all escrow fees and cancellation  fees owing
to the Title Company.

              6.8 Possession. Right to possession of the Property shall transfer
to Buyer on the Closing Date.

              6.9 Filing Of Reports.  Title Company shall be solely  responsible
for the  timely  filing of any  reports  or  returns  required  pursuant  to the
provisions  of Section  6045(e) of the  Internal  Revenue  Code of 1986 (and any
similar reports or returns required under any state or local laws) in connection
with the closing of the transaction contemplated in this Agreement.

              6.10 Cooperation.  Without further  consideration,  each of Seller
and Buyer shall execute,  acknowledge and deliver to the other party on or after
the Closing Date any and all other instruments or documents,  and do and perform
any other acts which may be  required  or which the other  party may  reasonably
request in order to fully assign,  transfer and/or convey to Buyer,  and vest in
Buyer, the Property, and each and every part and component thereof.

         7.  Liquidated  Damages.  IN THE EVENT THAT BUYER FAILS TO PURCHASE THE
PROPERTY AFTER (I) ALL OF THE  CONDITIONS TO THE BUYER'S  OBLIGATION TO PURCHASE
THE PROPERTY SHALL HAVE BEEN  SATISFIED,  OR WAIVED IN WRITING BY BUYER AND (II)
THE SELLER SHALL HAVE PERFORMED,  TENDERED (OR OFFERED TO TENDER) PERFORMANCE OF
ITS  OBLIGATIONS,  THEN THE DEPOSIT  SHALL BE PAID BY TITLE COMPANY TO SELLER AS
LIQUIDATED DAMAGES.  BUYER AND SELLER HEREBY ACKNOWLEDGE AND AGREE THAT SELLER'S
DAMAGES  WOULD BE DIFFICULT  OR  IMPOSSIBLE  TO DETERMINE  AND THE AMOUNT OF THE
DEPOSIT IS THE PARTIES'  BEST AND MOST ACCURATE  ESTIMATE OF THE DAMAGES  SELLER
WOULD SUFFER IN THE EVENT THE  TRANSACTION  PROVIDED FOR IN THIS AGREEMENT FAILS
TO  CLOSE  UNDER  THE  FOREGOING   CONDITIONS,   AND  IS  REASONABLE  UNDER  THE
CIRCUMSTANCES EXISTING AS OF THE DATE OF THIS AGREEMENT.  BUYER AND SELLER AGREE
THAT THE SELLER'S  RIGHT TO RETAIN THE DEPOSIT  SHALL BE THE SOLE AND  EXCLUSIVE
REMEDY OF SELLER IN THE EVENT OF SUCH A BREACH OF THIS AGREEMENT BY BUYER.



- -----------------------------                    ----------------------------
BUYER                                            SELLER

         8. Damage And  Destruction;  Condemnation.  Seller  shall  notify Buyer
immediately  of the  occurrence of any damage to or destruction of the Property,
or the  institution or maintenance of any  condemnation  or similar  proceedings
with respect to the Property prior to the Closing Date of which Seller is aware.
In the  event of any  damage  to or  destruction  of the  Property  prior to the
Closing Date for which the cost to repair in the aggregate exceeds $500,000,  or
in  the  event  any  condemnation  or  similar  proceedings  are  instituted  or
maintained  prior to the  Closing  Date,  Buyer  at its  option  either  (i) may
terminate  this Agreement by written notice to Seller prior to the Closing Date,
or (ii) may consummate the purchase evidenced by this Agreement. With respect to
any damage to or destruction of the Property prior to the Closing Date for which
the cost to repair does not in the aggregate  exceed $500,000 , Buyer shall have
no right to terminate this Agreement  pursuant to the preceding  sentence,  this
Agreement  shall  continue in accordance  with its terms and the Purchase  Price
shall be reduced by the Restoration  Funds (as defined  below).  As used herein,
"Restoration  Funds" shall mean an amount equal to the actual costs and expenses
directly and indirectly  related to the  restoration of the Property,  including
the costs of permits less the actual proceeds of insurance  assigned to Buyer at
the  Closing,  but  not  exceeding  the  estimated  cost of the  restoration  as
reasonably  determined  and agreed upon by Buyer,  Seller and WHTS based on bids
for a guaranteed  maximum price contract for the restoration,  which may include
appropriate  contingencies  for cost overruns  reasonably  agreed upon by Buyer,
Seller and WHTS. If Buyer, Seller and WHTS do not reasonably agree on the amount
of the Restoration  Funds and reasonable  contingencies in connection  therewith
prior to the Closing  Date,  then Buyer shall have the right to  terminate  this
Agreement as described above prior to the Closing Date. If this Agreement is not
terminated  by Buyer  pursuant to this  Section 8, then (i) Buyer  shall  accept
possession  of the Property in such  damaged  condition  and/or  subject to such
condemnation  or other  proceeding on the Closing  Date,  (ii) as of the Closing
Date,  Seller  shall  assign to Buyer all  insurance  proceeds  or  condemnation
proceeds  received  or to be  received  by Seller as a result of such  damage or
taking,  and (iii),  if  applicable,  the Purchase Price shall be reduced by the
amount of the  Restoration  Funds.  If this Agreement is so terminated by Buyer,
then Buyer shall be entitled to an immediate return of the Deposit.

         9. Commissions.

              (a) Each party to this Agreement warrants to the other that except
for the fees set forth in Section 9(b) due to Colliers International and Cornish
& Carey (the "Approved Broker"),  no person or entity can properly claim a right
to a real estate  commission,  real estate finder's fee, real estate acquisition
fee or other real estate brokerage-type compensation (collectively, "Real Estate
Compensation") based upon the acts of that party with respect to the transaction
contemplated  by this  Agreement,  and each party  hereby  agrees to  indemnify,
defend and protect the other  against  and to hold the other  harmless  from any
loss, cost or expense (including but not limited to attorneys' fees and returned
commissions) resulting from any claim for Real Estate Compensation by any person
or entity based upon such acts.

              (b) Seller shall be responsible for paying the Approved Broker, at
and  conditioned  upon close of escrow,  a sum equal to one percent  (1%) of the
Purchase Price pursuant to a separate  agreement between Seller and the Approved
Broker.  Buyer  shall be  responsible  for paying the  Approved  Broker,  at and
conditioned upon close of escrow, an additional sum equal to one percent (1%) of
the Purchase Price.

         10. General Provisions.

              10.1 Notices.  Any notice  required or permitted to be given under
this Agreement  shall be in writing and (i) personally  delivered,  (ii) sent by
United  States mail,  registered  or certified  mail,  postage  prepaid,  return
receipt  requested,   (iii)  sent  by  Federal  Express  or  similar  nationally
recognized  overnight  courier service,  or (iv) transmitted by facsimile with a
hard copy sent within one (1) business day by any of the foregoing means, and in
all cases  addressed  as follows,  and such notice  shall be deemed to have been
given  upon the date of  actual  receipt  or  delivery  (or  refusal  to  accept
delivery)  at the address  specified  below (or such other  addresses  as may be
specified by notice in the foregoing  manner) as indicated on the return receipt
or air bill:

                  TO SELLER:           PMC-Sierra, Inc.
                                       8555 Baxter Place
                                       Burnaby, British Columbia V5A 4V7
                                       Canada
                                       Attn: Manager, Corporate Real Estate
                                       and Facilities
                                       Fax No. 604/415-6161
                                       Phone No. 604/415-6651

                  with a copy to:      Wilson Sonsini Goodrich & Rosati
                                       650 Page Mill Road
                                       Palo Alto, California 94304
                                       Attention: Norman Cruz
                                       Fax No. (650) 493-6811
                                       Phone No. (650) 320-4926


                  TO BUYER:            Westbrook Partners, L.L.C
                                       100 California Street, Suite 750
                                       San Francisco, CA 94111
                                       Attn: Aric M. Shalev
                                       Fax No. (415) 438-7921
                                       Phone No. (415) 438-7920

                  with a copy to:
                                       Westbrook Partners, L.L.C.
                                       13155 Noel Road/LB 54
                                       Suite 2400
                                       Dallas, Texas 75240
                                       Attn:  Patrick K. Fox, Esq.
                                       Facsimile (972) 934-8333

                                       and

                                       Gibson, Dunn & Crutcher LLP
                                       333 S. Grand Avenue
                                       Suite 4900
                                       Los Angeles, CA 90071
                                       Attn:  Jesse Sharf, Esq.
                                       Facsimile: (213) 229-6638



                  TO WHTS:             Tishman Speyer Properties, L.P.
                                       525 Market Street, Suite 3720
                                       San Francisco, California  94105
                                       Attention: Carl Shannon
                                       Fax:  (415) 536-4139

                                       with a copy to:

                                       Tishman Speyer Properties
                                       520 Madison Avenue
                                       New York, New York 10022
                                       Attention:  General Counsel
                                       Fax:  (212) 935-8239

                                       and

                                       Schulte Roth & Zabel LLP
                                       919 Third Avenue
                                       New York, New York 10022
                                       Attention:  Jeffrey A. Lenobel, Esq.
                                       Fax:  (212) 593-5955

                                       and

                                       Whitehall Street Real Estate
                                       Limited Partnership IX
                                       85 Broad Street
                                       New York, New York 10004
                                       Attention:  Patricia Geery
                                       Fax:  (212) 357-5505

                                       With a copy to:

                                       Mr. Todd Williams Goldman,
                                       Sachs & Co. 100 Crescent
                                       Court, Suite 1000 Dallas,
                                       TX 75201 Fax: (214)
                                       855-6305

                                       Stone Street Real Estate Fund 1998, L.P.
                                       85 Broad Street
                                       New York, New York  10004
                                       Fax:  (212) 357-5505

                                       Bridge Street Real Estate Fund 1998, L.P.
                                       85 Broad Street
                                       New York, New York  10004
                                       Fax:  (212) 357-5505

                                       Stone Street WHTS Corp.
                                       85 Broad Street
                                       New York, New York  10004
                                       Fax:  (212) 357-5505


              10.2 Entire Agreement; No Modifications.  This Agreement, together
with the schedules and exhibits  attached  hereto,  incorporates all agreements,
warranties,  representations  and  understandings  between  the  parties  to the
Agreement with respect to the subject matter hereof and  constitutes  the entire
agreement  of Seller and Buyer  with  respect  to the  purchase  and sale of the
Property.    Any   prior   or   contemporaneous    correspondence,    memoranda,
understandings, offers, negotiations and agreements, oral or written, are merged
herein and replaced in total by this Agreement and the exhibits hereto and shall
be of no further force or effect.  This Agreement may not be modified or amended
except in a writing signed by Seller and Buyer.

              10.3  Time.  Time  is of the  essence  in the  performance  of the
parties' respective obligations set forth in this Agreement.

              10.4 Attorneys' Fees. In the event any action or proceeding at law
or in equity between Buyer and Seller (including an action or proceeding between
Buyer and the  trustee  or debtor in  possession  while  Seller is a debtor in a
proceeding under the Bankruptcy Code (Title 11 of the United States Code) or any
successor  statute to such Code) to enforce or interpret  any  provision of this
Agreement  or to protect  or  establish  any right or remedy of either  Buyer or
Seller hereunder,  the unsuccessful party to such action or proceeding shall pay
to the prevailing party all costs and expenses  including,  without  limitation,
reasonable  attorneys'  and  paralegals'  fees and  expenses,  incurred  by such
prevailing  party,  in such action or proceeding and in any appeal in connection
therewith,  whether or not such action,  proceeding  or appeal is  prosecuted to
judgment or other final  determination,  together with all costs of  enforcement
and/or collection of any judgment or other relief.

              10.5 Specific  Performance.  The parties understand and agree that
the  Property  is  unique  and for that  reason,  among  others,  Buyer  will be
irreparably  damaged  in the  event  that  this  Agreement  is not  specifically
enforced.  Accordingly,  in the event that Seller  defaults in its obligation to
sell the  Property to Buyer after (i) Seller has  acquired  the fee title to the
Property from WHTS, (ii) all other conditions to the Seller's obligation to sell
the Property set forth in Section 4(c) shall have been  satisfied,  and (ii) the
Buyer shall have performed,  tendered (or offered to tender)  performance of its
obligations  under this Agreement,  Buyer shall have, in addition to a claim for
damages for such breach or default  (subject,  however,  to the  limitations set
forth in Section  5.1),  and in addition  and without  prejudice to any right or
remedy  available  at law or in equity,  the right to demand  and have  specific
performance of this Agreement.  In all other circumstances,  Buyer hereby waives
the right to specific performance of this Agreement.

              10.6 Successors And Assigns.  Except as permitted by this Section,
this  Agreement may not be assigned by Seller or Buyer without the prior written
consent of the other  party  which may be granted or withheld by the other party
in its sole discretion. Subject to the foregoing provision, this Agreement shall
inure to the benefit of and be binding  upon the parties to this  Agreement  and
their respective  successors and assigns.  Seller shall have the right to assign
its rights and  obligations  under this  Agreement  to an affiliate of Seller by
delivery of notice of the  identity of the  assignee  affiliate at least 15 days
prior to the  Scheduled  Closing Date,  provided  that the assignee  assumes for
Buyer's benefit all of Seller's obligations hereunder and,  notwithstanding such
assignment,  Seller  shall  not be  released  from  its  obligations  under  the
Agreement or the Seller Closing  Certificate;  and Buyer shall have the right to
assign its rights and obligations under this Agreement to an affiliate of Buyer,
provided that the assignee assumes for Seller's and WHTS' benefit all of Buyer's
obligations hereunder and,  notwithstanding such assignment,  Buyer shall not be
released  from any  obligations  it may have under the  Agreement or the Closing
Documents. For the purposes of this Section,  "affiliate of Buyer" shall mean an
entity controlling,  controlled by or under common control with Buyer. "Control"
shall mean the  possession,  directly or indirectly,  of the power to direct the
management  and policies of an entity,  whether  through the ownership of voting
securities, by contract or otherwise.

              10.7  Counterparts.  This Agreement may be executed in one or more
counterparts  and each such counterpart  shall be deemed to be an original;  all
counterparts so executed shall constitute one instrument and shall be binding on
all of the parties to this Agreement notwithstanding that all of the parties are
not signatories to the same counterpart.

              10.8  Construction.  This  Agreement  shall  be  governed  by  and
construed  under the laws of the State of  California.  The parties  acknowledge
that each party and its counsel have  reviewed and revised  this  Agreement  and
that no rule of  construction  to the  effect  that  any  ambiguities  are to be
resolved against the drafting party shall be employed in the  interpretation  of
this  Agreement or any schedules or exhibits to it or any document  executed and
delivered by either party in  connection  with this  Agreement.  All captions in
this   Agreement  are  for  reference   only  and  shall  not  be  used  in  the
interpretation  of this Agreement or any related  document.  If any provision of
this  Agreement  shall  be  determined  to be  illegal  or  unenforceable,  such
determination  shall not affect any other  provision of this  Agreement  and all
such other provisions shall remain in full force and effect.

              10.9  Confidentiality.  Seller shall keep all information obtained
from or about Buyer or the transaction  contemplated by this Agreement  strictly
confidential  and will not disclose any such  information to any other person or
entity   without  first   obtaining   the  prior   written   consent  of  Buyer.
Notwithstanding anything to the contrary contained in this Agreement,  Buyer and
Buyer's  Agents and Seller and Seller's  Agents may  disclose the tax  treatment
(i.e.,  the  purported  or  claimed  Federal  income tax  treatment)  or the tax
structure (i.e., any fact that may be relevant to understanding  such treatment)
of the transaction contemplated by this Agreement, and all materials of any kind
(including  opinions or other tax analyses) provided by Seller to Buyer relating
to such tax treatment and tax structure.

              10.10 No  Third  Party  Beneficiaries.  There  are no third  party
beneficiaries  of this  Agreement and no person or entity,  other than Buyer and
Seller, shall be benefited by or have the right to enforce this Agreement.

              10.11 Exculpation. Buyer agrees that it does not have and will not
have any  claims or  causes  of action  against  any  disclosed  or  undisclosed
officer, director, employee, trustee,  shareholder,  partner, member, principal,
parent,  subsidiary or other affiliate of Seller (herein "Seller's  Affiliates")
or against any disclosed or undisclosed officer,  director,  employee,  trustee,
shareholder,  partner, member, principal,  parent, subsidiary or other affiliate
of WHTS,  including,  without  limitation,  Tishman Speyer Properties,  L.P. and
Goldman, Sachs & Co., or any officer, director, employee, trustee,  shareholder,
member,  partner or principal of any such parent,  subsidiary or other affiliate
(collectively,  "WHTS'  Affiliates"),  arising out of with this  Agreement,  the
Closing Certificates,  or the transactions  contemplated hereby. Buyer agrees to
look  solely  to  Seller  and its  assets  and to WHTS  and its  assets  for the
satisfaction of any liability or obligation  arising under this  Agreement,  the
Closing  Documents,  or  the  transactions   contemplated  hereby,  or  for  the
performance of any of the covenants,  warranties or other  agreements  contained
herein or in the Closing  Documents,  and further agrees not to sue or otherwise
seek to enforce any personal  obligation  against any of Seller's  Affiliates or
WHTS' Affiliates with respect to any matters arising out of this Agreement,  the
Closing Documents,  or the transactions  contemplated  hereby. The provisions of
this  Section  10.11,  however,  shall not apply to Seller's  Affiliates  to the
extent of the amount a Seller's  Affiliate  has received  after the date of this
Agreement, if the remaining funds available to Seller to satisfy the obligations
of Seller to Buyer pursuant to this Agreement and the Closing  Documents are not
at least equal to Five  Million  Dollars  ($5,000,000)  or such lower  amount of
liability or potential  liability as Seller may have under such  agreements.  In
addition,  the  provisions  of this  Section  10.11  shall not apply to  Tishman
Speyer/Travelers  Real Estate  Venture,  L.P. and  Whitehall  Street Real Estate
Limited Partnership IX (collectively, the "Members") to the extent of the amount
any of the Members has received from the proceeds of the  transactions  which is
the subject of the WHTS  Agreement,  if the remaining funds available to WHTS to
satisfy the obligations of WHTS to Buyer pursuant to this Agreement, the Closing
Documents and the WHTS Agreement are not at least equal to Five Million  Dollars
($5,000,000)  or such lower amount of  liability or potential  liability as WHTS
may have under such  agreements.  The  provisions  of this  Section  10.11 shall
survive the  termination  of this  Agreement and the Closing Date.  This Section
10.11 will not apply to the parties to the Parking  Easement or the  Development
Indemnity  Agreement to the extent such claim or cause of action  relates solely
to the Parking Easement  Agreement or the Development  Indemnity  Agreement,  as
applicable.


         IN WITNESS WHEREOF, Buyer and Seller have executed this Agreement as of
the date and year first written above:

SELLER:                                     BUYER:

PMC-Sierra, Inc.,                           WB MISSION TOWERS, LLC,
a Delaware corporation                      a Delaware limited liability company



By:____________________________             By:____________________________

Name:__________________________             Name:__________________________

Title:_________________________             Title:_________________________