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1 Mr. Edwin Olivares February 8,2018 Page 4 At 16:25 on 12/5/17,the initial water level in MW-6 was measured to be 58.35 feet below the top of PVC casing(BTOC),which was 1.2 feet above the measured well depth of 59.55 feet BTOC. Given the bottom tail pipe,this would put the water level only about 0.6 feet above the screen opening. Returning the morning of 12/6/17,the water level was measured to be at the same level,and the well was bailed dry to the extent possible with a disposable 1.5 inch by 3-foot polyethylene bailer. The well was bailed dry again that afternoon. On the morning of 12/7/17,the water level was measured to be 58.80 feet BTOC,and the well was again evacuated to the extent possible by bailing. MW-7 was developed on 12/7/17 by surging using a 1.5 inch by 3-foot solid PVC slug,and bailing with a disposable 1.5-inch by 3-foot polyethylene bailer. An initial water level was recorded at 40.42 feet BTOC, and the well depth was measured to be 59.37 feet BTOC,resulting in a wetted casing volume of approximately 3 gallons. Well development continued until the visual turbidity of the produced water stabilized,removing 12 gallons of water(4 casing volumes). The water level was measured to be 41.20 feet BTOC after bailing. Location and Elevation Survey Well and borehole locations were surveyed by GPS by GCC. Based on those coordinates,approximate locations are shown on Figure 1. The approximate site elevation is 5062 feet above mean sea level. A land survey to document exact locations and elevations will be performed at a later date. BASELINE MONITORING Development and Sampling After development,new monitor wells MW-6 and MW-7 were secured and left undisturbed for 27 days before sample collection on January 3,2018. Baseline groundwater samples from MW-6 and MW-7 were collected by CCG in accordance with CDPHE's Suggested Sampling Protocol for Ground Water Monitoring Wells. Prior to sample collection,the static water level and total depth were measured with an electronic water-sensing probe and results were used to calculate the wetted casing volume. MW-6 was purged and sampled with a disposable 1.5-inch by 3-foot polyethylene bailer. MW-7 was purged with a disposable 1.5- inch by 4-foot polyethylene bailer and sampled with a disposable 1.5-inch by 3-foot polyethylene bailer. After removal of each purge volume,field water quality parameters including pH,temperature,specific conductance were measured using a calibrated YSI Pro 1030 meter. Field parameters were measured in a minimum of three successive well casing volumes and until two or more field parameters stabilized(i.e., three successive readings within 10%),or the well was purged dry. Samples for dissolved metals analysis were field-filtered using high capacity 0.45-micron filters. After 27 days,the static water level in MW-6 was measured to be 50.74 feet BTOC. Given the well depth of 59.55 feet BTOC,the wetted casing volume for MW-6 was calculated to be 1.4 gallons. MW-6 bailed"dry" after removal of 2.6 casing volumes(at which point the water level was measured to be 59.02 feet BTOC). After 3.5 hours,the water level returned to only 58.45 feet BTOC,and the rate of rise was only about one one-hundredth of a foot every 20 minutes. Samples were collected to the extent water could be collected, resulting only being able to fill bottles for dissolved metals and nitrate/nitrite analysis. The initial water level in MW-7 was measured to be 40.29 feet BTOC. Given a well depth of 59.37 feet BTOC,the wetted casing volume for MW-7 was calculated to be 3.05 gallons. A total of 9.4 gallons(3.1 casing volumes)were removed prior to sampling. At the time of sampling(just under an hour after purging Close Consulting Group LLC