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AS APPLIED SCIENCE AND ENGINEERING, INC. <br /> lens ulting Scientists and C;igineers <br /> l,Rfi <br /> round�o ter laves trba[inns Civ i1 aI'd f-1vironnen fgl fngernra <br /> November27, 266UOI 31..Juk110.Dwre,CR8n816 ri (sso)>sszzeFax(5n>>:6-ie4e eMMg:sawrq�� <br /> Mr. Tim O'Brien <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road <br /> Sacramento, CA 95827-3003 <br /> MONITORING WELL INSTALLATION WORKPLAN <br /> BEAR CREEK WINERY, LODI.SAN JOAQUIN CO. <br /> A. General Information <br /> Site Address and Contact Person <br /> Vince Westphal, General Manager, Bear Creek Winery, 11900 Furry Road, Lodi, CA <br /> 95240; Telephone(209) 368-3113, Fax(209) 368-3083. <br /> Local Enforcement Agenev <br /> Monitoring well permits will be obtained from the San Joaquin Coiurty Environmental <br /> Health Department. <br /> Locations and Rationale <br /> Monitoring wells are being installed at this site to determine to what extent, if any, <br /> wastewater from the winery impacts groundwater. The wastewater is routed to a 10-acre <br /> infiltration area adjacent to the winery. The waste line leads to a sump on the east edge <br /> of the infiltration area. The contents of the sump are then pumped into a ditch network <br /> that can be adjusted to lead the wastewater to any portion of the infiltration area. The <br /> positions of these features are shown on the site map,Figure 1. <br /> The presumed direction of groundwater flow is toward the southeast, parallel to the <br /> direction of surface drainage. It is proposed to place three monitoring wells at the site; <br /> tentative locations are shown on Figure 1. This placement of wells will allow accurate <br /> computation of the groundwater gradient by the three-point method. Assuming the <br /> gradient direction is as expected, there will be one up-gradient well and two down- <br /> gradient wells for the primary infiltration area. <br /> Survey details <br /> The site is situated in the northwest quarter section of Section 29 in T3N, R7E. It is level <br /> at an elevation of about 20 feet(MSI-). <br /> 1 4utpment decontamination <br /> The monitoring wells will be drilled with 10-inch hollow-flight augers. The augers will <br /> be brought to the site in a steam-cleaned condition. The augers will be Stearn-cleaned <br /> after drilling each well in preparation for drilling the next well. <br />