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1995 H~G Cosl 7994 Annua! Rec/amatron Reoort • 4 <br />• 4.0 SEDIMENT PONDS <br />4.1 NPDES QUARTERLY REPORTS <br />All sediment pond discharges were sampled and monitoring data was reported to [he appropriate <br />Stale and Federal agencies. Copies of [he quarterly monitoring reports are found in Exhibi[ 6. <br />4.2 QUARTERLY INSPECTIONS <br />The quarterly inspettion reports are found in Exhibi[ 7. All inspection reports indica[ed there <br />were no problems with any pond. <br />4.3 SEDIMENT SURVEY <br />During 1991, TR-60 (to Modify Sediment Control Struttures) was approved by the Colorado <br />Division of Minerals and Geology (DMG). The SEDCAD sizing for Explosives Storage Poin[ <br />001, Landfill Point 002, and Shop/Office Point 003, showed [hat bo[h the runoff volume and <br />[he sediment delivered to each pond is zero. Therefore, adequate sediment storage for these <br />three ponds is guaranteed. <br />Due to excellent revegetation success on the reclaimed minesite, sediment delivery to the HG8 <br />pond appears to be insignifican[. More than adequate sediment storage capacity currently exis[s <br />• in the HG8 pond. <br />Results of a volumetric summary for sediment volumes in each pond is shown in the following <br />table. <br />• <br />1994 SEDIMENT VOLUMES <br /> Sediment Storage <br />Capeclty (Acre Feet) Totai Sediment <br />(Acre Feetl % Sediment Storage <br />Occupied <br />Explosive Storage Pt. 001 <br />Design 0 <br />1994 > 0 0 0 <br />Landfill Pt. 002 <br />Design 0 <br />1994 > 0 0 0 <br />ShoplOffice Pt. 003 <br />Design 0 <br />1994 >0 0 0 <br />HG 8 Pt. 004 <br />Design 3.70 <br />1994 > 3.70 0 0 <br />ttvnwatanec.ttrT <br />OLIO/95 3:alpm WP51/uric TenaMatrix Inc. • P.O. Boz 774018 • Stmmbaat Springs, Colorado 80477' (303J 8796260 <br />