Laserfiche WebLink
CLEARwAnR <br /> G R O U P, I N C. <br /> organic vapor using a calibratedhotoio ation detector. The results <br /> P of the <br /> field testing will be noted with the lithologic descriptions on field exploratory <br /> soil boring log. Soil samples selected for laboratory analysis will be covered <br /> on both ends with teflon tape and plastic end caps. The samples will then be <br /> labeled, documented on a chain-of-custody form and placed in a cooler for. <br /> transport to a state certified analytical laboratory. <br /> Drill soil cuttings will be stockpiled on pla tic and covered to control runoff, <br /> . .or placed in 55 gallon D.O.T. drums on s te, 'sampled. for landfill profiling <br /> a ' purposes and hauled by a licensed hazardois waste hauler to an appropriate' <br /> landfill. All waste stored on site will be'clea ly labeled. <br /> . I <br /> r' Well Installation <br /> Soil borings not .to be.converted into monitoring wells will be" sealed to the I <br /> ground surface using either neat cement or a cement/bentonite grout mixture <br /> in accordance with federal, state and local r gulations. <br /> i <br /> . Soil borings that will be converted into monitoring wells will be a minimum <br /> of eight inches in diameter for 2-inch dia eter' wells and a minimum of ten <br /> inches in diameter for -4-inch diameter wells. Monitoring. wells will be <br /> constructed with schedule 40, threaded polyvinylchloride (PVC) casing and <br /> ' have factory-slotted screen. The screened ' terval will be placed such that it <br /> will extend approximately ten feet into thrz water bearing zone, and at least <br /> two feet above the expected water level. Screen slot size and sand pack will be <br /> chosen based upon the expected aquifer ma# rials. A graded sand pack will be <br /> placed in the annular space across the screened interval and extended ' <br /> approximately one to three feet above the scre6n. A mi;mum of a one foot <br />$ + seal of bentonite will placed above the sand pack. The bentonite seal will be <br /> hydrated by either formation water 'or distilled water. Neat cement or a <br /> cement/bentonite grout mixture seals the remaining annular space to the <br />' surface. If bentonite is used in the grout ' ture, it will not exceed 5% by <br /> weight. A watertight locking cap and prote five traffic-rated vault box will be <br /> installed on top of each well. All well materials will be free. from <br /> contamination prior to installation. Complete well construction details will <br /> P.., be presented on the field exploratory soil boring log. Fluids or lubrications <br /> will not be used during the connection of individual lengths of screen and <br /> solid casing, other than distilled water. <br /> I <br /> r <br /> CLEARWATER GROUP,INC. � <br /> June 2,1995 <br /> E <br /> F <br />