Sales estimates for TTEK

Yearly Sales Estimates for TTEK

Estimate Year	High Estimate	Low Estimate	Mean Estimate	Standard Deviation	Latest Estimate
2007	1524.12	995.561	1080.416	183.286	8/28/2007
2008	1257	1230	1237.909	7.79	11/11/2008
2009	1382	1364.3	1373.632	5.989	10/16/2009
2010	1541.9	1443.2	1505.114	26.062	11/19/2009
2011	1725	1522.13	1644.707	70.7	11/16/2009
2012	1786.2	1786.2	1786.2	0	1/29/2009

Quarterly Sales Estimates for TTEK

Qtr Ending	High Estimate	Low Estimate	Mean Estimate	Standard Deviation	Latest Estimate
03-2007	250.3	245	248.462	0	2/7/2007
06-2007	390	251.6	293.07	61.99	5/21/2007
09-2007	405	258.105	287.882	57.496	8/3/2007
12-2007	294.52	274.94	282.583	7.073	1/30/2008
03-2008	277.96	264.5	270.477	4.739	3/5/2008
06-2008	313	193	288.612	39.052	7/30/2008
09-2008	344.56	333.8	340.335	3.649	11/11/2008
12-2008	339.49	316	324.116	7.991	1/27/2009
03-2009	334	315.2	325.477	5.955	4/20/2009
06-2009	358.65	340	347.169	5.226	7/1/2009
09-2009	362.9	345.1	354.941	5.883	10/16/2009
12-2009	345.7	330.5	339.504	4.53	11/19/2009
03-2010	381.7	326.4	353.396	11.931	11/19/2009
06-2010	410.9	384	398.339	8.482	11/19/2009
09-2010	427	395.665	414.516	10.295	11/19/2009
12-2010	398.487	364.664	383.862	14.075	11/16/2009
03-2011	412.344	382.294	401.084	13.062	11/16/2009