October 2002

Weather: 
Partly cloudy, calm, 22.7C, 73F
                     
            Dissolved   (TDS) Nitrate,  
        Water Oxygen Turbidity Conduct. as mg/L  
Test Site Date Time  pH Temperature mg/L NTU uS Nitrogen Remarks
Site #1 11-Oct-02 16:24 7.1 16.1 C 61.0 F 9.4 3.8 ntu 50 0  
River before City     A A   A A A A  
Storm System inlets                    
Site # 2 11-Oct-02 17:00 7.1 15.1 C 59.2 F 8.8 1.6 ntu 50 0  
River     A A   A B A A  
near Casa de Lodi                    
Site # 3 11-Oct-02 16:36 6.4 16.7 C 62.1 F 9.7 3.7 ntu 50 na  
River at     C A   A A A    
Mokelumne River Dr.                    
Site # 4 11-Oct-02 16:20 6.7 16.6 C 61.9 F 9.6 3.8 ntu 50 0 Some trash
River at "Scenic     B A   A A A A  
Overlook" Awani Dr.                    
Site # 5 11-Oct-02 16:43 7.7 15.9 C 60.6 F 8.9 2.7 ntu 50 0  
River, Glen Beach     A A   A A A A  
Edgewood Dr.                    
Site # 6 11-Oct-02 16:16 6.9 16.4 C 61.5 F 8.7 2.6 ntu 50 0  
River, N/O     B A   A A A A  
Pigs Lake                    
Site # 7 11-Oct-02 13:13 7.1 18.4 C 65.1 F 7.5 3.2 ntu 50    
River, near Gazebo 11-Oct-02 16:41 7.4 18.2 C 64.8 F 9.9 3.4 ntu 50 0  
N/O Lodi Lake Average   7.3 18.3 C 64.9 F 8.7 3.3 ntu 50 0  
      A A   A A A A  
Site # 7A 11-Oct-02 16:06 7.1 20.4 68.7 F 9.2 8.1 50 0 Lots of trash
East end (S/o SD)     A A   A B A A  
Lodi Lake                    
Site # 8 11-Oct-02 13:50 7.3 19.2 C 66.6 F 6.9 6.9 ntu 100 na  
Lodi Lake above     A A   B B A    
last Storm Drain                    
Site # 9 11-Oct-02 14:24 7.5 18.1 C 64.6 F 7.9 3.4 ntu 50 na  
River at     A A   A A A    
WID Dam                    
NA = Not Analyzed (equipment problems)              
GRADE: pH Temp D.O.     Turbidity TDS Nitrates
A 7.0 - 8.0 Weather > 85% Saturation   < 5 < 150 < 1
B 6.5-6.9, 8.1-8.5 and   75-84% Sat.   5 - 20 151 - 300 2  -  3
C 6.0-6.4, 8.6-9.0 condition 65-74% Sat.   21 - 50 301 - 500 4  -  5
D 5.5-5.9, 9.1-9.5 dependent 55-64% Sat.   50 - 150 501 -1000 6  -  10 
F <5.5, >9.5     < 55%Sat.,<5.0mg/L   > 150 > 1000 > 10

Sample Location Key

(All in Mokelumne River Except Site 8.)

1: Cluff Ave. Near the Solid Waste Transfer Station, 50' above first City of Lodi Storm Drain.

2: Near Casa de Lodi, 50' above City Storm Drain #3

3: Mokelumne River Dr. at Awani, above City Storm Drain #4

4: "Scenic Overlook" Beach, 50' above City Storm Drain #6

5: Willow Glenn Beach, 50' below City Storm Drain #8, 100' above Drain #10.

6: Pig's Lake Beach, 50' below City Storm Drain #10

7: Mokelumne River north of Lodi Lake Gazebo area, 50' above City Storm Drain #11

7A: Lodi Lake, SE End of Lake

8: In Lodi Lake at City Storm Drain #16

9: Mokelumne River, 50' above Woodbridge (WID) Dam