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Diamond Pet Food Processors of Ripon California, LLC January 28,2011
<br /> Attachment B Page 2 of 3
<br /> For the large-sample approximation, I Zs I is compared to a critical value, Zerit, where Zat;t
<br /> is the value of the standard normal distribution for I Zs I with a probability of exceedence
<br /> a/2. If I Zs I > probability of Zuijt a positive correlation (trend) is indicated.
<br /> DISCUSSION
<br /> Trend analysis was conducted for the data set from January 1992 to present.
<br /> Trends by analytes in all wells show the following characteristics:
<br /> o pH concentration trends are stable (no trend) in wells OB-13, 013-23, TH-2, TH-
<br /> 5, TH-7,TH-8, TH-1 I, M-19-C, and PW-4 through PW-8. Increasing trends in
<br /> pH concentrations were present in all other wells.
<br /> o EC concentrations trends are increasing in wells OB-4, 013-7, 013-8, 013-28, and
<br /> TH-8; stable(no trend) in wells 013-1 through 013-3, 013-5, 013-6, 013-9, 013-12,
<br /> OB-14, 013-15, OB-19 through 013-21, 013-27, TH-2, TH-4 through TH-6, TH-
<br /> 10, TH-11, M-19-C, PW-4 through PW-8; decreasing trend are present in wells
<br /> 013-10, 013-11, 013-13, OB-16 through 013-18, OB-22 through 013-26, TH-7,
<br /> TH-9, M-7-A and TII-1.
<br /> o TDS concentration trends are increasing in wells 013-1, 013-4, 013-7, 013-8, 013-
<br /> 12, 013-14, 013-21, 013-26, 013-28, TH-6, TH-8, TH-10 and TH-11; stable (no
<br /> trend) in well OB-3, 013-5, 013-6, 013-9, 013-15, OB-18 through 013-20, 013-27,
<br /> TH-2, TH-4, TH-5, M-19-C, and PW-4 through PW-8; decreasing in wells OB-2,
<br /> 013-10, OB-11, OB-13, OB-16, OB-17, OB-22 through 013-25, TH-7, TH-9, M-
<br /> 7-A and TH-1.
<br /> o Magnesium concentration trends are increasing in wells OB-7, 013-8, 013-21, TH-
<br /> 2, and TH-8; stable (no trend) in wells 013-1 through 013-6, 013-9, OB-12 through
<br /> 013-20, OB-22 through 013-24, OB-26 through 013-28, TH-4 through TH-7, TH-
<br /> 10, TH-11, M-19-C, and PW-4 through PW-8; and decreasing in 013-10, 013-11,
<br /> 013-25, TH-9, M-7-A, and TH-1.
<br /> o Calcium concentration trends are increasing in wells 013-8, 013-19, 013-21, and
<br /> TH-8; stable (no trend) in wells 013-1 through 013-7, 013-9, OB-11 through 013-
<br /> 18, 013-20, OB-22 through 013-24, OB-26 through 013-28, TH-2, TH-4 through
<br /> TH-6, TH-10, TH-11, M-19-C, and PW-4 through PW-8; and decreasing in 013-
<br /> 10, 013-25, TH-7, TII-9, M-7-A, and TH-1.
<br /> o Potassium concentrations are increasing in well TII-8; stable (no trend) in welts
<br /> OB-1 through 013-28, TH-2, TI-I-4 through TH-7. TH-9 through TH-11, M-19-C,
<br /> PW-4 through PW-8, and TH-1; and decreasing in M-7-A.
<br /> 1010201 Laivrence&Associates
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