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Kennedy/Jenks Consultants sanitary seal composed of approximately 2 feet of bentonite chips topped by cement. The monitoring well is protected by a flush mount traffic rated cover and locking well cap. Monitoring well MW-2 was constructed of 2-inch diameter Schedule 40 PVC with 0.010-inch slotted screen sections from 45 to 60.5 feet bgs. The filter pack consists of#3 sand, and a sanitary seal composed of approximately 4 feet of bentonite chips topped by cement. The monitoring well is protected by a locking steel standpipe. Monitoring well MW-3 was constructed of 2-inch diameter Schedule 40 PVC with 0.020-inch slotted screen sections from 16 to 36 feet bgs. The filter pack consists of#3 sand, and a sanitary seal is composed of approximately 2 feet of bentonite chips topped by cement.The monitoring well is protected by a flush mount traffic rated cover and locking well cap. Monitoring well MW-4 was constructed of 2-inch diameter Schedule 40 PVC with 0.020-inch slotted screen sections from 35 to 55 feet bgs. The filter pack consists of#3 sand, and a sanitary seal is composed of approximately 2 feet of bentonite chips topped by cement. The monitoring well is protected by a locking steel standpipe. Monitoring well MW-5 was constructed of 2-inch diameter Schedule 40 PVC with 0.010-inch slotted screen sections from 50 to 70 feet bgs. The filter pack consists of#3 sand, and a sanitary seal is composed of approximately 4 feet of bentonite chips topped by cement. The monitoring well is protected by a flush mount traffic rated cover and locking well cap. Monitoring well MW-6 was constructed of 2-inch diameter Schedule 40 PVC with 0.020-inch slotted screen sections from 55 to 75 feet bgs. The filter pack consists of#3 sand, and a sanitary seal is composed of approximately 2 feet of bentonite chips topped by cement. The monitoring well is protected by a locking steel standpipe. Monitoring well MW-7 was constructed of 2-inch diameter Schedule 40 PVC with 0.020-inch slotted screen sections from 50 to 71 feet bgs. The filter pack consists of#3 sand, and a sanitary seal is composed of approximately 2 feet of bentonite chips topped by cement.The monitoring well is protected by a locking steel standpipe. 4.2.2.2 Groundwater Sampling and Analysis Monitoring wells are sampled on a quarterly basis. As specified in revised MRP No. 87-184, the following constituents are analyzed for groundwater monitoring: Nitrate as N, TKN, TDS, pH, trihalomethanes, and standard minerals including calcium, magnesium, sodium, chloride, nitrate, sulfate, total alkalinity including the alkalinity series, and hardness. Trihalomethanes and standard minerals are monitored annually. Groundwater levels are recorded at the time of sampling. Tables 4 and 12 summarize the groundwater elevation data and analytical data respectively. 4.3 Offsite Groundwater Quality Although treated process water historically has been applied to land at the Facility's vineyards, other significant sources of the constituents of concern may also exist, such as releases at neighboring industrial or agricultural sites. Groundwater may also have been affected on a Groundwater Protection Work Plan, Woodbridge Winery Page 4-3 Robert Mondavi,Acampo, California sgma pAw,,3JpU 1231 aa�mcn ac'A�eP'.t5.cvi�i(VUcn v uJrt.hrtdce