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C <br />Gas probe top <br />Existing ground <br />surface <br />1/2" threaded cap <br />Soil backfill <br />1/2 SCh. 40 PVC pipe <br />F <br />1/8 11 I.D.. Clear vinyl tubing <br />1/21° Sch. 40 PVC coupling <br />o. <br />'o. <br />®® e <br />e <br />Gas probe tip <br />'• o <br />o. <br />® <br />Pea gravel <br />A.• <br />-o <br />e ®o: <br />-s <br />0- <br />.4° <br />4" min. <br />Not <br />to Scale 1-89 <br />SAN JOAQUIN COUNTY g <br />DEPARTMENT OF PUBLIC WORKS <br />NORTH COUNTY SANITARY LANDFILL 6-1 <br />SAN JOAQUIN COUNTY CALIFORNIA <br />GAS MONITORING PROBE <br />