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In order to obtain specific baseline water level information at New Horizon 2,
<br />a total of 22 monitor wells were drilled and completed. In June of 1986, 16
<br />monitor wells (GW-N13, GW-N14, GW-N15, GW-N16, GW-N16P1, GW-
<br />N17, GW-N17P1, GW-N18, GW-N18P1, GW-N19, GW-N20, GW-N21,
<br />GW-N22, GW-N23, GW-N24 and GW-N25) were installed. During August
<br />and September of 1987, six additional monitoring wells were installed, (GW-
<br />N29, GW-N30, GW-N31, GW-N32, GW-N33 and GW-N34). Measurements
<br />for static water levels began at these wells immediately after they were
<br />completed and developed. All of the water level data are presented in tabular
<br />and graphic form in Appendix D of Attachment 2.04.7-1 Hydrological
<br />Monitoring Plan. Five more wells (GW-N36, GW-N37, GW-N38, GW-N39
<br />and GW-N40) were added in May 1993. The first three wells were drilled in
<br />the north-east corner of the permit area. The last two wells were drilled along
<br />the Calamity Draw.
<br />During November 1998, six (6) new ground water monitoring holes were
<br />installed to collect baseline data. Three of these (GW-N41, GW-N42, and
<br />GW-N43) were located in an up dip area while the other three (GW-N44,
<br />GW-N45 and GW-N46) were located in a down dip area of the revised permit
<br />area. The three holes at each site will monitor overburden, coal zone, and
<br />underburden respectively. Baseline data collected between October 1988 and
<br />September 1999 are given in Attachment 2.04.7-2. During March 1999, two
<br />underburden monitoring holes, GW-N13 and GW-N19 were plugged and
<br />abandoned. Pursuant to the Phase III bond release in December, 2002, the
<br />following ground water monitoring wells were plugged and abandoned: GW-
<br />N1, GW-N10, GW-N11, GW-N24, GW-N25, GW-N26, GW-N28, GW-N4,
<br />and GW-N4R. Monitoring wells GW-N8, GW-N9, and GW-N27 are being
<br />left open but will not be monitored until the Division requests. Well GW-
<br />N12 was transferred to Montrose County.
<br />Surface and ground water monitoring station locations are shown on map
<br />2.04.7-1-A in the permit.
<br />b) All wells in the area will be monitored monthly for water levels adjusted to
<br />MSL and samples will be collected on a semi-annual basis for water quality
<br />parameters.
<br />2. The applicant will conduct monitoring of surface water in a manner approved by
<br />the Division. The monitoring plan was submitted under 2.05.6(3)(b)(iii) and
<br />includes the following: (4.05.13 (2))
<br />a) The baseline program (New Horizon 2 - July 1986 to July 1987) included
<br />monthly visits to maintain, service, take flow measurements, take field
<br />parameters and collect full suite water quality samples. Results of this
<br />program are discussed and tabulated in Section 2.04,7 of the New Horizon 2
<br />permit application.
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