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. ; ~ 1111111111111111111 <br />TWIN PINES INVESTMENT, LIMITED PARTNERSHIP <br />FALCON ENERGY INC., GENERAL PARTNER <br />16154 HIGHWAY 115 <br />FLORENCE, COLORADO 81226 <br />February 1, 1994 <br />Ms . Shawn Smith <br />Environmental Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 60203 <br />Subject: Twin Pines No <br />Dear Mrs. Smith: <br />2 Mine, Permit No. C-058-83 <br />RF~E ~ J~ 1 <br />FFe ; <br />~~,,;, ;, 2 19oq <br />,~ „ <br />`' ~%'D <br />ri~;~. <br />ei_. <br />-~. <br />In accordance with Stipulation Nos. 1 and 2, as revised by Technical <br />Revision No. 1, to subject permit, the "Water Monitoring Report" for <br />the period 6/93 to 1/94 is submitted herewith. <br />Operations at Twin Pines No. 2 Mine were stopped July 1993. The Mine <br />was officially closed August 20, 1993. No water was pumped from the <br />mine during the period. <br />The Final Mine Map was previously submitt, NPDES reports are enclosed. <br />Water level measurements and associated data for the water monitoring <br />wells for the reporting period are as follows: <br /> TPW-1 CALDIROLA NO. 2 <br />DATE: <br />------------ 1/27/93 <br />-------- 6/22/93 <br />---------- 1/4/94 <br />-------- 1/27/93 <br />--------- 6/22/93 <br />--------- 1/4/94 <br />---------- <br />- <br />------------ <br />CONDUCTIVITY -------- <br />780 ---------- <br />880 -------- <br />980 --------- <br />680 --------- <br />680 ------ <br />--- <br />920 <br />PH 8.5 8.5 8.5 7.5 7.5 7.5 <br />LEVEL 145.1 143.2 143.0 90.0 90.1 94.6 <br />TEMPERATURE 51°F 53°F 51°F 51°F 55°F 51°F <br />There again appears to be no significant impact on the wells from pump- <br />ing from the mine. <br />Samples for the water quality analysis of well no. TPW-1 were taken in <br />January 4, 1994. The results of the analysis is enclosed. Review of the <br />analysis and monitoring records for the 7 years the mine was in opera- <br />tion show no significant change in the parameters of the well due to <br />mining. It is therefore requested that the monitoring requirements for <br />Twin Pines No. 2 Mine be reduced to the minimum set forth in the regula- <br />tions. <br />Respec L y s b i ed, <br />L . G . itie%~~f/or~~ <br />TWIN PINES INVESTMENT LIMITED PARTNERSHIP <br />FALCON ENERGY INC., GENERAL PARTNER <br />