Laserfiche WebLink
r <br /> r . A traffic-rated housing was placed above the well casing and set in concrete The <br /> well housing was set approximately one-inch above the ground surface A locking <br /> device was Installed to minimize the likelihood of unauthorized access to the well <br /> The grout was allowed to cure for approximately 48 to 72 hours prior to monitoring <br /> well development <br /> A well reference measuring point was placed on the north side of the monitoring <br /> well casing The location and elevation of the top of casing at the reference point <br /> of the newly installed well and existing well were surveyed relative to mean sea <br /> level by a licensed surveyor to second order accuracy <br /> The water level and depth to the bottom of the well were measured to the nearest <br /> 0 01-foot using an electronic water level Indicator The presence of free-phase <br /> petroleum product was assessed <br /> Well Development Procedures <br /> • A minimum of five well casing volumes of water was removed from the well <br /> during development The temperature, conductivity, and pH of the groundwater <br /> removed during development of the well were monitored Development continued <br /> until the measured groundwater parameters had stabilized and the turbidity of the <br /> water removed has decreased to a degree as judged acceptable Well development <br /> activities were recorded on well development forms <br /> r • Water removed from the well was contained in SS-gallon United Nations approved <br /> drums Labels were placed on the drums with the contents, date, well number, and <br /> job number recorded on the label The drums were stored at the site pending <br /> laboratory analysis of the groundwater <br /> Groundwater Sampling Procedures <br /> ' Field activities and equipment utilization were recorded on field report forms <br /> • A disposable polyethylene bailer was used for collection of each groundwater <br /> sample Polyethylene bailers were discarded after each sample Is collected <br /> • New nylon rope was used to lower the bailers into the wells The nylon rope was <br /> discarded after each well <br /> • Groundwater samples were placed Into laboratory-supplied containers containing <br /> preservatives <br /> • Groundwater was discharged from the bailer via a bottom-emptying device <br /> Discharge to the containers was conducted In a manner to minimize bubbling and <br /> agitation of the liquid The containers were filled to the top forming a meniscus to <br /> minimize the headspace <br /> i <br /> N Irancfp 11Projects\Projects1880104011 a101101Assessment and Interim Remedial Report doc <br /> ' B-3 <br />