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SECTION 3 <br /> <br />EARTHWORK <br /> <br />Earthwork shall be classified as "Ditch Excavation" and <br />Construction . <br /> <br />"Embankment <br /> <br />3-01 <br /> <br />3-02 <br /> <br />Ditch Excavation shall conform to the requirements <br />the Standard Specifications. <br /> <br />of Section 19-4 of <br /> <br />Embankment Construction shall conform to the requirements of Section <br />19-6 of the Standard Specifications with the following modifications: <br /> <br />ae <br /> <br />After the area upon which embankment is to be placed has been <br />cleared, the total width upon which embankment is to be deposited <br />shall be plowed, scarified and finely broken up as directed by the <br />Engineer in order to allow new fill material to bond with the old <br />earth. <br /> <br />b. Ordinary embankment material shall consist of native soils located <br /> within the District's easement for this contract. Porous sandy or <br /> gravelly soil shall be used for embankment only when specifically <br /> approved by the Engineer. Collodial silts shall not be used in <br /> embankment within the limits of this contract. No material shall <br /> be used if the content of clay (material with grain size less than <br /> O.O05mm.) is in excess of 20% unless specifically directed in <br /> writing by the Engineer. Ordinary embankment material shall be <br /> consolidated to a relative compaction of not less than 90% as <br /> determined by the latest revision of Test Method No. California <br /> 216 of the Department of Transportation of the State of <br /> California. Subgrade (6" of existing ground below the aggregate <br /> base) shall also be compacted to 90%. <br /> <br />c. If in the opinion of the Engineer, the soil conditions at any <br /> location are such that the levees cannot be constructed as shown <br /> on the plans, the City reserves the right to modify the design <br /> cross-sections of the levees as directed by the Engineer. <br /> <br />3-03 <br /> <br />3-04 <br /> <br />d. The contract as a whole shall not be deemed to be complete and <br /> final acceptance will not be given ~nless all embankment section's <br /> are at elevations not lower than those shown on the drawings at <br /> the time of said final acceptance. <br /> <br /> Unusual Conditions shall be brought to the attention of the Soils <br /> Engineer and his corrective measures shall be approved by the City <br /> Engineer, prior to start of corrective work in the area. <br /> <br /> Disposal of Surplus Material: Material not needed for embankment or <br /> backfill purposes and material that is not approved by the Engineer for <br /> embankment or backfill purposes shall be promptly removed and disposed <br /> of off the site by the Contractor at his own expense. The Contractor <br /> shall not dump material on any property without the permmission of the <br /> owner thereof. <br /> <br />CDS.1.9 3-1 <br /> <br /> <br />