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California Reponal atertY <br /> aliAntrol Board <br /> Central Valley Region <br /> Robert Schneider,Chair I 1 0 <br /> Alan C.Lloyd Ph.D. Arnold Schwarzenegger <br /> Agency Secretary Sacramento Main Office Governor <br /> Internet Address: hnp://www.waterboards.ca.gov/centralvalley/ <br /> 11020 Sun Center Drive,#200,Rancho Cordova,CA 95670-6114 <br /> Phone(916)4643291•FAX(916)4644780 <br /> R11E�� <br /> 28 September 2005 -J J <br /> OCT e 2Q0 <br /> W. Michael Carroll, P.E. <br /> FNV1Rt)!x I i, e`!i_ii <br /> Senior Civil Engineer <br /> Department of Public Works <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> CONSTRUCTION REPORTS FOR SITE IMPROVEMENT PROJECT AND EVAPOTRANSPIRATION <br /> FINAL COVER TEST SECTION, FOOTHILL SANITARY LANDFILL, San Joaquin County <br /> The Construction Specifications and Construction Quality Assurance/Quality Construction Plan for the <br /> Site Improvement Project(Site Improvement Plan)and Construction Quality Assurance/Quality <br /> Construction Plan for the Evapotranspiration Final Cover Test Section(ET Plan)were submitted in <br /> compliance with Cleanup and Abatement Order(CAO)No. R5-2004-0706. The reports were prepared <br /> and signed by Timothy Crandall of Kleinfelder and Lomesh Dutta and Timothy Crandall of Kleinfelder, <br /> respectively. <br /> Our review indicates that the reports are incomplete. Our comments are as follows. <br /> Site Improvement Plan <br /> 1. Construction Specifications Section 3.12: Evapotranspiration(ET) Cover. States that soil is to <br /> be placed in one-foot lifts. ET Plan states that ET cover will be installed with six-inch lifts. The <br /> plans should be consistent with each other. There also should be soil specifications for the ET <br /> cover and a determination whether the onsite soils meet those specifications or whether additives <br /> are needed to increase water-holding capacity of the soils or fertility necessary for designed plant <br /> life. <br /> 2. CQA Plan Section 5.4 outlines laboratory testing that will be required during the construction of <br /> the ET cover. However,there are no limits provided to determine whether the soil can be used <br /> for the ET cover. <br /> 3. CQA Plan Section 4.1: Provide weekly reports to Regional Board. <br /> 4. CQA Plan Section 9.2.5: Provide dimension for the extrusion repair. <br /> 5. Pursuant to Waste Discharge Requirement(WDRs) Order No. R5-2003-0020,the side slope <br /> liner shall consist of, from top to bottom, a two-foot-thick operations layer, a geocomposite drain <br /> California Environmental Protection Agency <br /> co Recycled Paper <br />