Laserfiche WebLink
Quik Stop Market No. 132 October 30, 199J <br /> Job No. 349132-32 Page 4 <br /> -'� Survey <br /> The wells will be surveyed by a licensed land surveyor. The wells will be located both <br /> horizontally and vertically (to the nearest .01 feet MSL). A site plan will be prepared <br /> at a reasonable scale so that the data can be portrayed in a useful manner, <br /> Wel? Development <br /> After construction,each well will be developed using a surge block to agitate and set the <br /> sand pack around the annulus of the well casing. A bailer will be used to remove water <br /> ` manually after each surge. Well development (a) removes residual silts and clays left <br /> -� from the drilling and (b) improves the hydraulic conductivity between the wells and the <br /> natural formation. After development, the well will be allowed to recharge with water <br /> - from the surrounding formation (at IPast 24 hours), enabling Exceltech to collect a <br /> representative water sample and to measure the thickness of any floating product <br /> encountered. <br /> fAll water collected during well development will be placed in DOT 17E drums and left <br /> on-site until laboratory analyses are complete. At that time, the drums and water may <br /> be properly disposed of by Quik Stop. s <br /> �r Groundwater Sampli,rg <br /> }before sampling groundwater, an Exceltech sample technician will field-check the <br /> monitoring wells with an interface probe or a clear acrylic bailer to checl: for the <br /> E presence of free-floating product. In monitoring wells where,no floating product is <br /> x observed, each well will be Purged:of a minimum of 4 well casing.volume.,-, 'of <br /> I groundwater before sampling. Purged water will be placed in Department of <br /> Transportation 17E drums. All important will sampling information will be included ' <br /> [- <br /> in the final report. The information will ir;elude PH, temperature, conductivity, and <br /> water volume removed. <br /> i; <br /> Samples will then be collected with a clean Teflon bailer and transferred to appropriate <br /> 5 laboratory-supplied bottles. The samples will be analyzed for TPIIG; benzene, toluene, <br /> ethyl benzene,and xylenes (BTEX); total lead; organic lead; and where necessary,fecal <br /> coliform. Each bottle will be labeled and logged on a chain-of--custody form and placed <br /> in a cooler containing ice for transport to a California-certificd laboratoA endix <br /> A includes the Exceltech Groundwater Sampling Protocols. pp <br /> f <br />