Laserfiche WebLink
r <br /> �F <br /> Y 4 : <br /> f � <br /> Clayton <br /> F YCONSV1xor,tiIFN <br /> ,.. WLIALINfS <br /> . <br /> DRILLING, WELL CONSTRUCTION, AND SAMPLING PROTOCOLS <br /> 1 l FOR <br /> 1 r": <br /> BOREHOLE/MONITORING WELL INSTALLATION <br /> s <br /> BOR "HOT UYSTALLAMN <br /> ; I <br /> i <br /> g Clayton Environmental Consultants, Inc. acquires the proper governmental agency permits to <br /> f bore, drill, or destroy all proposed boreholes and monitoring wells that intersect with <br /> groundwater aquifers and writes a health and safety plan, <br /> i <br /> Clayton subcontracts only with drillers <br /> licenwho possess a current C-57 water well contractor's <br /> i se issued by the State of California and whose personnel have attended the OSHA 44- <br /> hour Hazardous Materials Safety Training. Prior to starting work, a "tailgate"safety meeting <br /> ineIuding discussion of the safety hazards and precautions relevant to the particular job will. be held with all personnel working on the job. Well drillers are identified on permit <br /> applications. <br /> Boreholes are drilled dory by hollow-or solid-stem, continuous flight augers, Au <br /> rods,"and other working components of the g g gcrs, drill <br /> onsite to prevent the introduction of contaminants.rig <br /> steam-cleaned <br /> areealso steam-fore g. <br /> cleaned between borings away from boring locations. Cleaned augers, rods, and other <br /> components are stored, and/or covered when not in use. <br /> Clayton examines the soil brought to the surface by drilling operations, <br /> undisturbed soil every 5 feet or as otherwise specifiedand samples <br /> . Borehole logs are filled out in the <br /> Held by a geologist who is trained and.working under the supervision of an engineer or <br /> geologist who is registered in the State of California: Our borehole logs include a detailed <br /> 1 a, description of subsurface stratigraphy using the Unified Soil Classification System. <br /> Soil cuttings are screened for hydrocarbon contaminationusing an organic vapor meter <br /> (OVM)• Clayton uses two different organic vapor testing field testing methods. One is the <br /> open-air method and the other is an ambient temperature heads <br /> << � P pace.method. <br /> tom' <br /> When we use the open-air method,-we monitor-the ambient air shave a target area without <br /> i collecting a physical sample. This method measures the hydrocarbon vapors as they exist in <br /> the particular environment at that specific point iri time. This method is affected by existing <br /> weather conditions,particularly wind and'temperature. Using this method, we can monitor <br /> J the environment for.workor safety as well as locate <br /> that-may not be visible. pockets of the more volatile hydrocarbons <br /> a E ' <br /> PtWCWLrtP <br /> ,Yr <br />