X0202 4 2006-05-16 1 0000895565 SYNAGRO TECHNOLOGIES INC SYGR 0001105021 GTCR GOLDER RAUNER LLC 6100 SEARS TOWER CHICAGO IL 60606-6402 0 0 1 0 0001104997 GTCR FUND VII LP C/O GTCR GOLDER RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 0 0 1 0 0001262949 GTCR PARTNERS VII L P 0 0 1 0 0001085449 GTCR CAPITAL PARTNERS L P 0 0 1 0 0001262801 GTCR MEZZANINE PARTNERS LP C/O GTCR GOLDEN RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 0 0 1 0 0001262806 GTCR CO INVEST LP C/O GTCR GOLDER RAUNER LLC SEARS TOWER #6100 CHICAGO IL 60606-6402 0 0 1 0 0001262948 GTCR PARTNERS VI L P 0 0 1 0 Common Stock 2006-05-16 4 S 0 12570122 3.984 D 0 I See Footnote Common Stock 2006-05-16 4 S 0 115081 3.984 D 0 I See Footnote Common Stock 2006-05-16 4 S 0 899984 3.984 D 0 I See Footnote By GTCR Fund VII, L.P. ("GTCR Fund VII"). By GTCR Co-Invest L.P. ("GTCR Co-Invest"). By GTCR Capital Partners, L.P. ("GTCR Capital"). GTCR Fund VII, GTCR Co-Invest and GTCR Capital were direct beneficial owners of the shares of the Issuer's Common Stock prior to the transactions set forth in Table I above. GTCR Golder Rauner, L.L.C. ("GTCR") is the general partner of GTCR Partners VII, L.P. ("GTCR Partners VII"), which is the general partner of GTCR Fund VII. GTCR is also the general partner of GTCR Co-Invest. In addition, GTCR is the general partner of GTCR Partners VI, L.P. ("GTCR Partners VI"), which is the general partner of GTCR Mezzanine Partners, L.P. ("GTCR Mezzanine"), which is the general partner of GTCR Capital. GTCR, GTCR Partners VII, GTCR Mezzanine and GTCR Partners VI may be deemed to have an indirect pecuniary interest in the Issuer's Common Stock owned by GTCR Fund VII, GTCR Co-Invest and GTCR Capital to the extent of such Reporting Persons' direct and indirect proportionate general partnership interests in GTCR Fund VII, GTCR Co-Invest and GTCR Capital. Such Reporting Persons disclaim beneficial ownership of shares previously held by GTCR Fund VII, GTCR Co-Invest and GTCR Capital. /S/ David A. Donnini, Principal 2006-05-16