Laserfiche WebLink
r - <br /> 0 • <br /> r- 4 <br /> 2.0 SCOPE OF WORK <br /> 2.l _Oef�j.tion g�Gro -Water Andiul <br /> The direction of ground water flow in the vicinity of the tank excavation <br /> is currently unknown. To determine the direction of flow, a minimum of <br /> three monitoring wells will be required. Water levels in the three wells <br /> will define the ground water gradient, from which the direction of flow <br /> will be determined. <br /> i <br /> As shown on Figure 2, one monitoring well already exists in the immediate <br /> ,. vicinity of the tank excavation. This well, (M-1), has an approximate. <br /> depth of 20 fent. This well will be utilized as one of the three wells <br /> required in the investigation, <br /> } <br /> Two additional wells, M-2 and M-s, will be installed in the locations shown <br /> on Figure 2. These three wells form a triangle 150 feet on a side, which <br /> will allow definition of the gradient using a three point method. k <br /> r <br /> - � onitorina Wells <br /> 4 <br /> r <br /> All construction activities will be conducted in accordance with the site <br /> Health and Safety Plan (attached document). A well detail is shown on <br /> Figure 3. Note that the wells will be installed using four-inch Polyvinyl <br /> k Chloride (PVQ pipe, to allow future conversion to extraction wells, if <br /> I necessary. All utilities will be located with the assistance of the <br /> utility companies prior to drilling, <br /> �v <br /> �� -- nonfeEnvironmental <br /> s <br /> r�n <br />