ROYALT Y CHECK INFORMATION Learn more about your royalty check. The following page outlines some of the terms used. CARRIZO ROYALT Y CHECK C ARRIZO ROYALT Y CHECK 5 0 0 DA L L A S S T REE T SUI T E 230 0 HOUS T ON , T X 770 02 877-3 41-26 99 PAY 5 6 -36 2 412 W E L L S FA RGO B A NK , N . A . VA N W E R T, O H CHECK NO. CHECK DATE CHECK AMOUNT 0 0 0 0 06 8811 05 /28/2010 * * * * * * * $1,36 8.10 ONE THOUSAND THREE HUNDRED SIX T Y EIGHT DOLL ARS AND TEN CENTS VO ID A F T E R 12 0 DAY S T O T HE O R DE R YOUR NA ME YOUR ADDRE S S YOUR CI T Y, S TAT E & ZIP C ODE SIGNAT URE O F S I GN AT U R E H A S A C O L O R E D B A C KGRO U ND – B O R DE R C O N TA IN S MI C RO PA IN T IN G ^ P L E A S E DE TA C H AT P E R F O R AT I O N A B OV E ^ ^ P L E A S E DE TA C H AT P E R F O R AT I O N A B OV E ^ CARRIZO OIL & GAS, INC. 5 0 0 DA L L A S S T REE T SUI T E 230 0 HOUS T ON , T X 770 02 1 2 3 4 5 P RO D DAT E P RO D U C T IN T T YPE PRICE DE C K D C ML DI S T D C ML PROPER T Y XXXX.XX 02 / 2010 GAS 3 . 31 R1 GROS S T O TA L S NE T T O TA L S 021326 OW NE R 14 C HE C K N U MB E R GRO S S VO L U ME O W NE R VO L U ME PROPER T Y N A ME GRO S S VA L U E O W NE R VA L U E 0 0 0 0 0 6 8 811 GRO S S TA X E S O W NE R TA X E S GRO S S DE D U C T S O W NE R DE D U C T S GRO S S NE T O W NE R NE T 10 2 , 96 0. 97 12 0. 0 0 15 .71 13 0. 0 0 1, 36 8 .10 S TAT E C OUN T Y 0. 0 05 3 0726 6 78 ,722 . 0 0 8 26 0,73 9.17 0. 0 05 3 0726 7 417. 8 0 9 1, 3 8 3 . 81 11 257,778 . 20 78 ,722 . 0 0 26 0,73 9.17 2 , 96 0. 97 0. 0 0 257,778 . 20 417. 8 0 1, 3 8 3 . 81 15 .71 0. 0 0 1, 36 8 .10 CHECK DAT E : 05 / 28 / 2010 CHECK A MO UN T 1, 36 8 .10 ROYALT Y CHECK INFORMATION Terms used and their meanings: 1 PRODUC TION DATE — Calendar month that production of the “product” happened. 2 PRODUC T — Would have one of the four following values: GAS PPROD (Plant Product or Processed Gas) — Natural gas liquids OIL COND (Condensate) – Oil produced from a gas well 3 INTERES T T YPE — Typically, one of the two: R1, R2, R3 – Royalt y Owner W1, W2, W3 – Working Interest Owner 4 PRICE — Unit price received from purchases - unit of measure Per Barrel for oil and condensate Per MCF (1,000 cubic feet ) for natural gas 5 DECK DCML /DIS T DCML 1st Line which has the Gross amounts is 100% amounts 2nd Line which has Owner amounts is Owner’s share equal to distribution decimal times 100% 6 GROSS VOLUME 7 OWNER VOLUME 8 GROSS VALUE — Price x Gross Volume 9 OWNER VALUE — Price x Owner Volume 10 GROSS TA XES — State Severance Tax (NOT Federal Withholding) 11 OWNER TA XES — Owner’s share of State Severance Tax (NOT Federal Withholding) 12 GROSS DEDUC T S — Transportation Cost - Cost to get product from wells to sales point. 13 OWNER DEDUC T S — Owner’s share of transportation cost. 14 OWNER NUMBER — Unique owner identifier