HYDRO27761

• Permit No: C1980007
• IBM Index Class Name: Hydrology
• Doc Date: 11/1/2004
• Doc Name: Biomonitoring Report Dated September 22, 2004
• From: SeaCrest Group
• To: Mountain Coal Company
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

The SeaCrest Group Daphnid Acute Benchsheet Form #: 102a x ~
Louisville, CO Effective: February 2002
Permittee: ttiT, Co..~ $ite: tN•EIK fH,Uc Lab #: 30y zyZ
IWC %: I , ~ Template #: ~_ Sample Date: pp,wc;cy.{ - Dilution Water: M N
Age 8 Source: Og~laO`-t- fit- i7 Y Cn.^nl Test Started: n '? I,.A4 - 12r~ Test Ended: G~iG~[t y - / 2 y~;
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1. Exposure Chamber
Total Capacity: 30 ml Test Solution Volume: 15 ml
Test Solution Surface Area: cm` Water Depth (constant): cm
(cyclic): cm
2. Feeding Schedule
Not Fed: Fed Daily:
Fed Irregularly: X Food Used: YCT, Algae
(describe): fed 1-2 hours before test
3. Aeration
None: _
Before Use: _
4. Screened Animal Enclosures
Not Used: X
5. Conditionlappearance of surviving o
orientation, erratic movement, etc.
~_minutes @ -100 bubbles/min)
Used: cm diameter
at end of test (i.e., alive but immobile, loss of
t 4L1cClc ~_
6. Comments: ~ agpHN~A tN +Z. S" ~aA -36~-~ FL~ArI.~~ c,.~ ~:.rrAi~. i3v,-Atlv¢_