ARCHIVED REPORTS_XR0012706 - Laserfiche WebLink

Home Browse Search

v R � P• n I Clayton LYI'lRUNA1ENfAL CONSULTANTS been of sufficient duration for pH, temperature, and electrical When purging low-yield wells, the wells are purged conductivity to stabilize. 80% to dryness. When the well recovers of the depth measured upon arrival, samples are collected. to r Field sampling logs maintained for each well include: Monitoring well identification, ° Static water level, before and after pumping j 7, Well depth • Condition of water prior to purging (e.g., amount of free product) • Purge rate and volume • pH, temperature, and conductivity during purging • Time purged Time of sample collection Sampling method E Name of sampler ° Climatic conditions j } Water samples are collected using clean teflon or disposable hailers. ' yI contacts sa_Mples is thoroughly cleaned before arrival at the site and betweAll en that phng events. Water is collected in clean laboratory-supplied containers labeled ice chest pre-cooled to 4°C, and transported to Clayton's laboratory for anaalylaced sis. One oto an blank'%-M be furnished in accordance with our quality assurance/quality control P program. (QA/QC) .,, AIl.samples are collected in such a manner so as to m' due to aptation and/or transfer from minimize.the volatilization Of a sample :. . that contam;Hants most sensitive to volatilizationliare sampled firste container. Samples are collected so fiz Preservatives are not added to any sample, unless instructed. If requested, the are supplied .m, by Clayton's laboratory. Y All sample containers are labeled in the field. Label contain the following information: uT project name,sample identification numbe i s f t�t sampler's initials. r, Project number, date and time of collection, and Under no circumstances are sealed sample containers P laborato .opened by anyone other than the_. 1 p laboratory personnel who perform the requested analyses. If it is necessary 'for samples or sam le chests to leave the immediate control of the sampler prior t Melive sar to a - - �' laboratory, for example during shipment by Feder Express, a costo:,` seal s sample container'and/or.satriple chest to ensure that t Y. placed on each with during transportation. The custocry seal is signed by the sampler, and he dat ve not been wand time that the seal was placed is recorded. Ti:e elapsed time between sample collection and Y A. delivery to the laborarary ne�ier exceeds 48 hours. 14 days Prior toanalysis and are kept at 4°C at all times Water samples are not held for more than 4 #�J 4 Lj I