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C153671 contract docs
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Last modified
8/4/2011 3:53:54 PM
Creation date
8/4/2011 2:57:39 PM
Metadata
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Template:
Loan Projects
Contract/PO #
C153671
Contractor Name
Beaver Park Water, Inc.
Contract Type
Loan
Water District
12
County
Fremont
Loan Projects - Doc Type
Contract Documents
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. . � <br />Woodward-C <br />5co�e Ontion 1- Combined Piezometer/Inclinometer Casin� <br />The basic Scope of 5ervices includes completion of each drill hole as a piewmeter with <br />PVC casing. We believe that the casing installed should be combined piezometer/ <br />inclinometer (CPI) casing. CPI casing contains "grooves" on the inside for measurement <br />with an inclinometer probe. Inclinometer readings provide data on defarmation of the <br />embankment and identi�cation of the gotential siide plane. Since the slide plane <br />geometry can be difficult to identify in drill holes and by sampling, the inclinometer may <br />provide a direct method to identify slope movement. The use of CPI casing allows dual <br />use of the hole for measurements of water levels and slope movement. The inclinometer <br />can also be used to monitor ongoing slope movement and potential slope movement <br />during further drawdown and/ar d` t repairs. <br />Installatian costs for the CPI will be si ' casing. The costs shown in <br />Section 6 include the increase i o� installation. We have also <br />included the cost for obtaining � set of readings and reducing the data. <br />Srnpe Oetian Z- Dry Core Samnling <br />Identification of a slide ptane in the embankment or foundation can be difficult using <br />conventional drilling and sampling methods because the feature is often thin (on the <br />order of inches). We believe that a contiauous 'wisual" sampling would provide a higher <br />probability of lacating the slide plane. One successful method ihat we have used is a <br />"dry core" sampling device. The dry core sampler consists of a plastic liner inside of <br />hollow stem augers with samples retrieved in 2 to 5 foot lengths. Since the drilling <br />method is slower than conventional drilling, we recommend a limited dry core sampling <br />in two drill holes. We would plan to dry core approximately 601ineal feet at the most <br />likely tocations of a slide plane. <br />�cooe Ontion 3 - Test Pits. <br />Based on our site visit on September 30, 1993, and descriptions by Mr. Troy Tempteton <br />and Mr. Mike Graber, there have not been any surface signs of cracking in the crest or <br />upstream slope. It appears that the cracking is related to upstream movement due to <br />Woodvrard-Ctyde Consuttants <br />Z3360/PR0.4 12-08-93(8:53un)lRPT 4'4 <br />
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