THE TCW GROUP Mr. Kenneth L. Lay Chairman & CEO Enron Corp 1400 Smith Street Houston, TX 77002-7369 Account Summary Net Contribution! Reinvestment Beginning Market Value at Earnin~/(Loss) (Withdrawal! Distribution) Ending Market Value at Percent of Ending Investinenr Jul. 1, 2001 for the Month for the Month Jul. 31, 2001 Market Value TCW Mid-Cap Equities Separate Account $1,607,373.63 ($184,619.44) $0.00 $1,422,754.19 69.5% TCW Concentrated Core Equity Separate Acct 646,781.93 (22,964.08) 0.00 623,817.85 30.5 TOTAL $2,254,155.56 ($207,583.52) $0.00 $2,046,572.04 100.0% Performance Summary Investment Current Latest Year-to- Latest Inception2 Index Month 3 Months Date 12 Months to-Date Account Summary Net Contribution! Reinvestment Beginning (Withdrawal! Distribution) Ending Market Value at Percent of Ending Investinenr for the Month Jul. 31, 2001 Market Value TCW Mid-Cap Equities Separate Account $0.00 $1,422,754.19 69.5% TCW Concentrated Core Equity Separate Acct 0.00 623,817.85 30.5 TOTAL $0.00 $2,046,572.04 100.0% Performance Summary Investment Year-to- Latest Inception2 Index Date 12 Months to-Date TCW Mid-Cap Equities Separate Account -11.49% -12.87% -31.67% -55.52% -57.29% S&.PMidcap 400 with Income -1.49 0.40 -0.54 5.58 5.07 TCW Concentrated Core Equity Separate Acct -3.55 -5.21 -16.97 -29.43 -31.21 SckP 500 with Income -0.98 -2.75 -7.61 -14.33 -14.95 Footnote~. I - hiciudes net u,venment Intone and reatr2ed and unrealized gains and Losses. 2- flaprooentx the enmutamze zeiw,, since the anal purchase oJthe uwestnieOt. The TCW Group provides In,estaninst sdvtoory services thtouuji the totlowing Invosunent Idvisors: Trust Company of Use West, TCW Asset Management Company, WVI' Thvostment Management Company, TCW/Creocent Meszanine, L.L.C., TCW Sperial Credits, TCW Capital, TCW Americas Development, Inc., TCW Asia, Ltd., sdTCW London Intensationol, Limited. Your epeclnc investment advisor(s) ..llI depend on Use investment(s) in Which you participate. For inquiries, please contact; Robert M. Hanisee 865 S. Figucroa Street Los Angeles, CAD90017 (213) 244-0013 Consolidated Summary Statement MONTH ENDED JULY 31, 2001 For the Account of Kenneth L. & Linda P. Lay Tax Th Number. ~ Page 1 of I TCW-25-0404