AgdaPkt 2000-08-14 - Laserfiche WebLink

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�1.��.s ground surface. A temporary well will be constructed in each boring and a �rab goundwater sample will be collected. i Each soil boring will be logged in the field utilizing the Unified Soil Classification System. Office and field sugervision for the drilling and log;in� operations will be provided by a California registered civil engineer. � The temporary well materials will be removed and the borin� will be abandoned to the specifications of the San Mateo County permit requirements. i Soil and �oundwater samples will be containerized, labeled and transported to a California certified laboratory for analysis under chain-of-custody proceedin�s. > Provide quality assurance/quality control (QA/QC) procedures during the field activities. These procedures include decontaminating the sampling equipment prior to, and following each use. Decontamination will consist of washing the equipment in an Alconox0 solution, folIowed by a fresh water rinse, and subsequent distilled or purified water rinse. Auger flights and drilling rods used durin� the advancement of the borin�s will be steam cleaned prior to use on each subsequent boring. The soil cuttin�s and decontamination fluids from drilling operations will be retained in »- gallon drums stored at the site pending the results of the laboratory analyses and subsequent disposal following regulatory protocol. c) Laboratory Testing :- The soil and groundwater samples will be submitted to the analytical laboratory for analyses on a standard 10-working day turn-around-time. Geocon will instruct the analytical laboratory to homogenize all the aerial deposited lead soil samples prior to analvsis. i Approximately 99 soil samples will be analyzed for total lead following EPA Test Method 6010. � Approximately 12 soil samples will be analyzed for soil pH following EPA Test Method 9045. :- Approximately 16 soil samples and 8 �rab groundwater samples will be analyzed for total petroleum hydrocarbons as gasoline (TPH�), benzene, toluene, ethylbenzene and xylenes (BTEX), and methyl tert-butyl ether (MTBE) by EPA Method 8020, and for total petroleum hydrocarbons as diesel (TPHd) and motor oil (TPHmo) by EPA �lethod 801�, for volatile or�anic compounds (VOCs) by EP�. Method 8260, semi- VOCs bv EPA Method 8270, and for C�v1 17 metals by EPA Method 6010i7000 Series. :- The analytical laboratory will be instructed to conduct soluble lead analyses via the Ciry of Belmont — Route 101/Ralsron Ave IC Modifieations 07/06/00 Proposal — PS&E . .. _ ._ _ _ ..,�. t _