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Unformatted text preview: Ine Helationsnip between LOhClUCtIVIty and Alkalinity
at Site 3: Mondavi Bridge Dawn Sumner and PCP Participants Main Points: ‘ Both Conductivity and Alkalinity are
affected by evaporation ,.
’ Conductivity can be influenced by an .-
influx of salts l
- Alkalinity can be inﬂuenced by
photosynthesis and respiration Data: Data were collected at site 3 between October 2005 and May 2006.
Conductivity and Alkalinity were measured on the same samples using 553;
X meter for conductivity and a Y titration for alkalinity. l :
:02 " SUBS - Norman Bridge Con ductiwtv
25o 2m 0 H
o Cn nducuvlly (us) 5 c: o Conductlvlw (us) .4 o c 4;
a in a
. zoo ,-.— - a
a WINDS 11fﬁf05 12!.26/05 Zfl‘UOEI M's/C5 SIZSfUEI 0 20 4D 60 80 100 120
Date Alkalinity (ppm) Data with a conductivity below 250 us and alkalinity less than 120 ppm show a strong linear
correlation suggesting that both are changing due to evaporation or dilution from rain water. Above this range, there is no obvious correlation, suggesting that the two analyses are being affected by different processes. Changes in data in MWWW
time show the effects ofdilution. ‘5“
a Z: - . . 3 Osita 1
Conclusnons and Recommendations: 'A tag:
The coupled data may say something a €39” 332:3
about sources of salts to the ” 100
Arboretum Waterway and photosynthesis. 5° CI EU Allalin:;0(ypm) 15E! lDU ...
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- Spring '08