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2012-10-25_INSPECTION - M1984094
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2012-10-25_INSPECTION - M1984094
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Last modified
8/24/2016 5:09:50 PM
Creation date
10/25/2012 3:12:13 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1984094
IBM Index Class Name
INSPECTION
Doc Date
10/25/2012
Doc Name
INSPECTION REPORT
From
DRMS
To
SANBORN SAND & GRAVEL
Inspection Date
9/12/2012
Email Name
MAC
Media Type
D
Archive
No
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OBSERVATIONS <br />PERMIT #: M- 1984 -094 <br />INSPECTOR'S INITIALS: MAC <br />INSPECTION DATE: September 12, 2012 <br />The inspection was conducted by Michael Cunningham of the Division of Reclamation, Mining and Safety <br />(Division). Michael Pfister of Sandborn Sand and Gravel was also present for the inspection. The Gloria Z Mine <br />is located approximately one mile northwest of Fairplay, CO on the west side of the Middle Fork South Platte <br />River. The site is permitted for 30.5 acres and the post- mining land use is rangeland and developed water <br />resource. <br />This inspection was conducted as a follow up to a citizen complaint from Mr. Todd Sullivan, an adjacent <br />landowner. The Division visited Mr. Sullivan's residential property located approximately 1,200 feet from the <br />Gloria Z Mine on August 30, 2012 and observed that the water from the household faucet had a brown /red <br />tint. Following the visit to Mr. Sullivan's property, the Division conducted an inspection of the Gloria Z Mine <br />and found that the Operator was diverting water from the wash pond into an area of exposed groundwater <br />located along the southern permit boundary. The purpose of this inspection was to collect water samples from <br />Mr. Sullivan's well and from the area of exposed groundwater at the Gloria Z Mine in order to determine if <br />activities at the mine are impacting the quality of water in Mr. Sullivan's well. Pursuant to Construction <br />Materials Rule 3.1.6, Operator's have a responsibility to minimize disturbances to the prevailing hydrologic <br />balance of the affected land and of the surrounding area and to the quantity or quality of water in surface and <br />groundwater systems. <br />The Division collected a groundwater sample from Mr. Sullivan's residence at 9:OOam. Mr. Sullivan's domestic <br />well was capped; therefore, the sample was collected from the bathtub faucet. The Division measured pH, <br />total dissolved solids, and electrical conductivity of the water sample using portable Hanna meters. The results <br />were as follows: pH = 7.1, TDS = 141ppm, EC = 282 µs /cm, temperature = 47.5° F. All of the measured <br />parameters were found to be within the normal range for drinking water. The tap water was allowed to run <br />for approximately 10 minutes, during which time the water was periodically collected in a sample cup to <br />observe water clarity. The Division did not observe any discoloration to the water, the water appeared normal <br />in both color and clarity. <br />Following the collection of a water sample from Mr. Sullivan's well, the Division proceeded to the Gloria Z <br />Mine. The sample was collected at 9:40am from the area of exposed groundwater near the southern permit <br />boundary. The Division measured pH, total dissolved solids, and electrical conductivity of the water sample <br />using portable Hanna meters. The results were as follows: pH = 6.8, TDS = 176ppm, EC = 345 us /cm, <br />temperature = 44° F. All of the measured parameters were found to be within the normal range for <br />groundwater. At the time the sample was collected there was a light rain. In addition, the Operator was <br />diverting water from the wash pond into the area were the groundwater sample was collected; the inflow rate <br />was approximately 100gpm. <br />The water samples were immediately placed into a cooler with ice packs following sample collection and were <br />delivered to Accutest Laboratories at 2:15pm. The samples were analyzed for total suspended solids, total <br />dissolved solids, total iron, total manganese, and total copper. These parameters were chosen because one of <br />the most common causes of water is discoloration is due to the presence of minerals. If groundwater has low <br />oxygen concentrations, iron and manganese can dissolve in the water. When the water is pumped from the <br />well it encounters oxygen and the iron and manganese precipitate as small particles of iron hydroxide and /or <br />manganese hydroxide minerals. <br />Page 2 of 3 <br />
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