2009-02-26_REPORT - C1992081

• Permit No: C1992081
• IBM Index Class Name: REPORT
• Doc Date: 2/26/2009
• Doc Name: 2008 Annual Hydrology Report
• From: Hayden Gulch Terminal, Inc
• To: DRMS
• Annual Report Year: 2008
• Permit Index Doc Type: Hydrology Report
• Email Name: JHB
• Media Type: D
• Archive: No

•
DIVISION OF RECLAMATION, :MINING AND SAFETY
Deparlreent o(tiatural Resources
' 3 1 3 Sherman 5t.. kcx rn ? t i
Dcr. :e•r. Colorado 80203
Phone; , 10 1! 866- 156?
FAX: .[phone]b
MEMO
Date: June 5, 2008
From: Tom Kaldenbach
To: File
Hayden Gulch Loadout (Permit C-92-081)
Hydrology
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RECLAMATION
NiIN ING
SAFETY
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Re: Ground Water Points of Compliance Determination
Permit Renewal RN-03
•
1 have reviewed the need for establishing ground water points of compliance at the I luyden Gulch
L.oadout. I reviewed the operation's annual hydrology reports from 1996 through 21006,
hydrogeologic data in the permit application, and ground water well data from the Division of
Water Resources. The following text can be inserted in the Renewal Findings document.
Rule 4.05.13 requires establishment of'ground water points of compliance if. in the judgement of
the Division, the operation has the potential to negatively impact the quality of ground water for
which quality standards have been established by the Water Quality Control Commission. Ground
water points of compliance are unwarranted at the hlayden Gulch Loadout, as explained below.
Alluvia! Ground Water - Dry Creek alluvial ground water in the area downgradient from the main
surface disturbance of the loadout (the "specified area") can be classified as "Limited Use and
Quality" based on the natural "rDS concentration consistently above 10.000 mg/I in alluvial ground
water well 11GDAL-3. Ground water classified as "Limited Use and Quality" has limitations for
only radioactive or organic pollutants. The loaduut is riot likely to generate significant amounts of
radioactive or organic pollutants: therefore, the operation does not have the potential to negatively
impact the quality of ground water in the Dry Creek alluvium.
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fledrock Ground Water- The loaduut dices riot ha%e the potential to negatively impaet bedrock
aground vkater duality hecsuse an% lc,.rc:hate originating Irom the loadmit vwould lack sut'ticient
h\draulic head to significantly irnade the bedrock unit underlying the ;area. the lw -pcrnwabllity
I ewis Shale. ['his marine shale confines.tquiler units in the undcrIN ing, Mcsa?erde Group (Scott
and Kaiser. 1994. I]Ndrt_3logic Setting ofthe (pper Nlesaverde Group. Sand %',1sh KISi) err
('olorado Geological Suryc4 Resource Series 30. page 639. Several hundred tcet of Lewis Shale
separate the loaduut from the deeper Mesayerde Group. As a loaduut (rather than it mine). the
operation will have no deep excavations or deep irnpoundments where %tiater could develop
significant hydraulic head. In addition. any Icachate originating at the loaduut k%otlld likely he ot•
hcttcrgtlaht? than Hatt\e 21,01111d Mater III the 1.c!%Is Shale Milch has high cor3cc:111ratltin,, ot,

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STATE OF COLORADO
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