Arizona Canal at the Cholla WTP    MIB and Geosmin Data

Date MIB (ng/L) Geosmin (ng/L) MIB (ng/L) from
Glendale Lab
Geosmin (ng/L) from
Glendale Lab
6/30/98 56.3 6.6
6/16/98 21.6 4.4
5/27/98 20.7 6.0
3/27/98 10.1 ND*
2/24/98 NS NS NS NS
1/16/98 ND ND NS NS
12/17/97 2 ND >100.0 26.6
11/17/97 67 32 65.8 7.0c
10/29/97 ND ND >100.0 4.9"
10/15/97 27 5 >100.0 4.2
9/29/97 150 23 28.1 5.7*c
9/10/97 310 ND
8/27/97 41 ND 16.8 5.7
8/14/97 79 ND 180.6 14.4
7/31/97 61 ND 69.9 9.7
7/15/97 3 ND Extract lost Extract lost
7/1/97 ND 13 42.4 7.3
6/17/97 Sample Lost Sample Lost 43.6 9.0
6/3/97 ND ND 73.1 6.7
5/20/97 1 ND 30.0 11.7
5/8/97 ND 25.4 11.0 8.6
4/8/97 ND ND 8.7 6.3
3/6/97 ND 12
2/4/97 940 190
1/7/97 ND ND
12/10/96 36 12
11/19/96 44 13
11/5/96 ND 9
10/22/96 NS NS
10/8/96 >1000 45
9/19/96 32 ND
9/3/96 ND ND
8/17/96 ND 3
7/27/96 7 3

# High Surrogate

*Low surrogate

^ Large algae globs in sample

" Estimated value, outside of curve range