REP16509

• Permit No: C1992081
• IBM Index Class Name: Report
• Doc Date: 4/4/2005
• Doc Name: 2004 Annual Hydrology Report
• From: Hydro-Environmental Solutions Inc
• To: DMG
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Mareh 2005 Hayden Guleh I~adaut - 2004 Annual Hydrology Ref~art ~ Page 3
3.0 HYDROLOGIC MONITORING
3.1 SAMPLING AND MEASURING TECHNIQUES
Field measurements were recorded for conductivity, pH and temperature. Surface water flow was
measured with a SwofEer Mode12100 portable velocity meter, or visually estimated. Static groundwater
level measurements were taken with an electronic water level indicator.
Field conductivity and pH meters were calibrated prior to each days use. The conductivity meter was
calibrated using a potassium chloride solution with an electrical conductivity in the 78 to 6 ,668 micro-
Siemens per centimeter (µS/cm) range. The pH meter was calibrated using NBS traceable buffers
with pH values of 7.0 and 10.0 units.
Surface water and groundwater samples collected for laboratory analysis were collected using standard
industry practices and U.S. Environmental Protection Agency guidance to assure the data is
.representative of the water resource being observed. Table 1, CDPS Permit COG-850008 Aualytica!
Lirt, presents the parameter list for the sediment pond outfall samples. Table 3, Surface WaterAnalytica!
h?t, shows the laboratory analyses for the surface water samples. Table 4, GmundmaterAnalyticalLut,
presents the laboratory analyses for the groundwater samples. Analyses were performed by ACZ
Laboratories, Inc. (ACZ) of Steamboat Springs, Colorado. ACZ performs all analyses by U.S.
Environmental Protection Agency (EPA) or equivalent methods.
3.2 SURFACE WATER DATA
3.2.1 Colorado Wastewater Discharge Permit System (CDPS) Monitoring
There are two sediment ponds Loadout that are regulated in accordance with the Colorado
Wastewater Discharge Permit System. The ponds are identified as the Truck Loop Pond (Outfall
001A), and the Ra$ Loop Pond (Outfall 002A). The locations of the two sediment ponds are shown
on Figure 1, Monztorzng Side L acatianr.
During 2004, no discharge was observed Eiom either pond. Table 4, Summary of Sediment Pond CPDS
Monitoring, presents a summary of the CDPS monitoring observations. Appendix A, CDPS Water
~ualfty Data, includes a listing of water quality statistics for previous yeazs for the Loadout CDPS sites.
Pex the requirements of the CDPS permit, No. COG-850008, quarterly Discharge Monitoring Reports
(DMRs) were submitted to the appropriate regulatory agencies. For completeness purposes, copies of
the 2004 DMRs are provided in Appendix B, CDPS Discharge Monitoring Reportr.
3.2.2 Stream Monitoring
Two stream monitoring locations were sampled in the vicinity of the Loadout along Dry Creek.
Permit specified monitoring consists of semi-annual (spring and fall) monitoring Eor flow and water
quality.
The upstream surface water monitoring site (HGSDl) is located approximately 0.5 miles upstream of
the Loadout permit boundary. This site is located on Dry Creek just downstream of Routt County
Road 53. The downstream surface water monitoring site (HGSD3) is located on Dry Creek within the
rail loop, downstream of the Loadout facility area. A third location (HGSD2), which is downstream of
where the rail spur transitions to the rail loop and of HGSD3, was abandoned in 1995. The locations
Hydro-Environmental Solutions, Inc.
57 10~ Street, Suite B * P.O. Box 772996
Steamboat Sprtng; CO 80477
(970f 846-5112