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XIII. ENGINEERING EVALUATION AND RECOMMENDATIONS <br /> Following is an evaluation of the Corral Hollow Sanitary Landfill <br /> operations as they relate to state minimum standards and also <br /> recommendations for improving these elements. As mentioned in <br /> the introduction, the landfill is currently operated to meet <br /> state minimum standards. The evaluation below was developed <br /> using field observation, review of inspection reports as <br /> described in Section I.D. above, and review of existing site <br /> plans. <br /> A. Evaluation: <br /> Field operations are carried out as described in Section VII <br /> above. Site operating personnel perform adequate control of the <br /> incoming waste and covering of the waste to control nuisances <br /> described in Section VII. The current site landfilling <br /> procedures are good with regard to the compaction and covering of <br /> waste. Although site operations satisfy minimum state standards, <br /> improvement to some operational procedures could be made. These <br /> improvements are contained in the following recommendations. <br /> B. Recommendations: <br /> 1. Grade Control: <br /> Current landfilling is taking place in the last remaining pit on <br /> the site. As such this phase of landfilling involves completion <br /> of Module 1 of the Closure Plan, which will bring the grade of <br /> the pit up to the existing grades of areas surrounding the pit. <br /> The landfilling techniques in the pit have been with cellular <br /> building of lifts. This portion of operations has not required <br /> precision grade control because the area is not near final grade <br /> elevations. However, operations which take place during the <br /> winter months and after completion of Module 1 will be outside of <br /> the pit and will be approaching final grade elevations. The <br /> operations for landfilling of these areas will require precision <br /> grade control. The grade control will require precision field <br /> surveying, field engineering, and coordination with site design <br /> plans. <br /> 2. Site Watering for Operations: <br /> It is recommended that the City of Tracy proceed with the <br /> proposed procurement of a 3000 gallon construction water truck <br /> for the landfill. This will provide a more reliable and <br /> efficient means performing dust control at the site than the <br /> existing truck which is used for watering. <br /> 46 <br />