writes "TABLE 1 – SUMMARY 2003 ASSESSMENT
|
Water Quality Parameter
|
Total No. of Measurements
|
No. of Measurements
exceeding New Criteria limits
|
% of total
Exceeding the New Criteria
|
|
Chloride
|
120
|
29
|
24
|
|
Sulfate
|
131
|
32
|
24
|
|
Ttl. Dis. Solids
|
105
|
30
|
29
|
|
E-Coli Bacteria
|
10
|
4
|
40
|
Note: This table summarizes
water quality assessment for the parameters whose limits were approved and
proposed by TCEQ in 2000 and subsequently approved by the US EPA during September
of 2004. Reference - Historical Data Review Document Prepared by Tetra Tech for TCEQ, June
2003.
TABLE 2 – COMPARISON
of SOME PRE YEAR 2000 LIMITS TO NEW LIMITS APROVED by EPA
on Sept. 10, 2004
|
SEGMENT 0615 – ANGELINA ARM
of SAM RAYBURN
|
|
PARAMETER
|
LIMIT
PRIOR TO 2000
|
NEW
LIMIT
|
RATIO
OF NEW/OLD
|
|
Chlorides
|
70
|
150
|
2.14
|
|
Sulfates
|
40
|
100 |
2.5
|
| Dissolved solids |
250
|
500 |
2.0 |
| pH |
6.0 – 8.0
|
6.5-9.0 |
|
| Dissolved Aluminum |
991ug/l |
8520ug/l |
8.6 |
|
SEGMENT 06I0 – MAIN BODY of SAM RAYBURN |
| PARAMETER |
LIMIT PRIOR TO 2000 |
NEW LIMIT |
RATIO OF NEW/OLD |
| Chlorides |
70 |
150 |
2.14 |
| Sulfates |
40 |
100 |
2.5 |
| Dissolved solids |
250 |
400 |
1.6 |
| pH |
6.0 – 8.0 |
6.5-9.0 |
|
| Dissolved Aluminum |
991ug/l |
* |
|
|
|
|
|
|
*The EPA did not approve a change in dissolved Aluminum limits in main body of reservoir.
Note: Allunits are mg/l except dissolved Aluminum and pH.
