My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
FLOOD03787
CWCB
>
Floodplain Documents
>
Backfile
>
3001-4000
>
FLOOD03787
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/25/2010 6:28:16 PM
Creation date
10/5/2006 12:04:03 AM
Metadata
Fields
Template:
Floodplain Documents
County
Morgan
Community
Log Lane Village
Basin
South Platte
Title
Log Lane Village - Upgrade of Domestic Water Systems
Date
11/14/1989
Prepared For
Log Lane Village
Prepared By
Consultants
Floodplain - Doc Type
Community File
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
58
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
<br />Calculating the Langelier Saturation Index <br /> <br />A simplified procedure for calculating the LSI is given below. Although the LSI cannot <br />predict all corrosion tendencies, it is a useful indicator when used within the boundaries of its <br />applicability and intent. A positive LSI means the water has a tendency to deposit CaC03; <br />a negative LSI means the water has a tendency to dissolve CaC03. An LSI of zero means <br />the water is in equilibrium with respect to CaC03; it will neither deposit nor dissolve <br />CaC03. <br /> <br />The LSI is calculated with Equation 1. <br /> <br />LSI = pH-pHs <br /> <br />(1) <br /> <br />where: <br />pH = <br />pHs = <br /> <br />pH measured at the system temperature <br />pH if water were in equilibrium with CaCO, at the existing calcium and <br />bicarbonate ion concentrations <br /> <br />pHs is defined by Equation 2. <br /> <br />( Ca ) ( Alk ) <br />pHs = K - logte - loglo + <br />40,000 50,000 <br /> <br />5A C~V - 0.31) <br /> <br />(2) <br /> <br />where: <br />K and A are temperature dependent constants found in Table 3 <br />Ca = calcium concentration, mg/! <br />Alk = total alkalinity, as CaCO" mg/! <br />I = ionic strength. <br /> <br />Ionic strength may be roughly estimated by Equation 3 (preferred) or Equation 4. <br />I = 1.6x10'sC <br /> <br />(3) <br /> <br />where: <br />C = conductivity, j.lmhos/cm (j.lS/cm) <br /> <br />1= TDS <br />40,000 <br /> <br />(4) <br /> <br />IIi] BROWN AND CALDWELL <br /> <br />5 <br />
The URL can be used to link to this page
Your browser does not support the video tag.