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SCOPE - WORK FOR REAL ESTATE DIyESTMEHi PROJECTS <br /> The proposed scope of work will entail the drilling of three soil borings <br /> and the construction of three ground-water monitoring wells, if ground <br /> water is encountered. The location of the borings is shown on the <br /> attached site plans. Drill cuttings are to be placed on, and covered <br /> with, plastic. Purge water should be containerized in appropriate <br /> 55-gallon liquid drums, Presented below is a detailed outline of the work <br /> to be performed: <br /> 1. Notify Underground Services Alert to mark known underground <br /> utilities. <br /> 2. Receive all necessary boring/well permits. <br /> 3. Drill the first soil boring (as directed by the Ultramar <br /> Project Manager) to 50 feet or until ground water is <br /> encountered. Soil samples are to be collected every 5 feet or <br /> at obvious lithologic contacts. <br /> If no round water is encountered: stop drilling at 50 <br /> feet or when two consecutive clean samples, <br /> ls, below 40 <br /> feet, (based on PID readings) obtained. <br /> If round water is encountered: continue drilling 10 <br /> feet into the saturated zone. <br /> 4. If ground water is present at 50 feet or less below grade, <br /> construct a 2-inch-diameter monitoring well with 5 feet of <br /> screen above and 10 feet of screen below the saturated zone. <br /> Wells are to be completed as per Ultramar's Guidelines. <br /> 5. Drill the remaining two boring locations. If ground water is <br /> present at < 50 feet, construct two additional wells as <br /> described above. If water is > 50 feet, drill the additional <br /> two soil borings to 35 feet or until two consecutive "clean" <br /> soil samples are obtained. <br /> 6. Discuss boring <br /> _ blogs and <br /> sample <br /> depths <br /> corresponding <br /> PID readings) withthe UltramarrojecManager inorderto <br /> define which samples are to be analyzed and which lab will <br /> perform the analyses. <br /> 7. If wells are installed, purge and sample the wells as per <br /> Ultramar's Guidelines. <br /> 8• Survey the wells to to evaluate <br /> un -watergradientatthesite. <br /> g. Prepare a data package for each site containing a site map, <br /> potentiometric surface map, and soil and ground-water analyses <br /> tables. These Pa <br /> data packages <br /> ust31, 1be at Ultramar's Hanford <br /> office by 5.0 <br /> ---- - - -- <br /> 10. Prepare draft technical report as per Ultramar's Guidelines. <br /> A samplerreport-format wild-be--forwarded-ta you ante--- ,e--- --- --__--- - - - <br /> roject is awarded. Draft reports are due at lltramar s <br /> Hanford office by April 15, 1491 . <br />