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stone and sandstone with a notable absence of gravel normal to stream laid deposits. <br /> Bedrock may or may not be encountered during excavation. The new channel will be twenty <br /> feet in width at the bottom with a high berm on the northwest side (see Drawing #1). <br /> Excess material from channel construction shall be used in construction of the berms, <br /> and/or disposed of in the Pond 15-P10 removal, and regrading or embankment construction <br /> for Pond 22-P10. Slight meanders will be constructed to slow the flow of water and allow <br /> development of a normal stream channel (see Map #4). <br /> A mine haulage road will cross the realigned channel by a riprapped low water crossing. <br /> This portion of the task requires excavating the road, plus ten (10) feet on each side of the <br /> road, a depth of two (2) feet below stream channel grade and replacing with two feet of <br /> riprap (see Map #4). Riprap material for the road crossing must consist of durable <br /> __-irr harrre k have a minimum D - 50 of 6 inches and D-max of 9 inches. Riprap will have <br /> 1 to be importe *__ approved by PM??***., Channel configuration, and limits will be staked <br /> l/ by DMG personnel. The portion of the haul road below the ri ra ed crossingshall be re- <br /> graded to eliminate a large erosion gully. The width and grade of the road shall shall not be <br /> changed. <br /> Measurement and Payment <br /> Task 4 Pond 15-P10 Removal <br /> The purpose of this task is to completely remove Pond 15-P10 which is not permitted as a <br /> permanent pond. <br /> Work Description <br /> The east, south and west embankments of Pond 15-P10 shall be removed and incorporated\ <br /> into the north side of the inslope. The resulting new slope shall be graded to approximate <br /> original contour. Revegetation shall be according to specifications in stc9on-20-9-6-NM <br /> General Bid Specificarion,�993. ` � <br /> Measurement and Payment <br /> There will be no measurement for payment for Task #4. Payment for Task #4 will be <br /> reflected in a lump sum bid under Item 4 on the Bid Schedule. <br /> Task 5 - Reconstruction of Pond 22-P10 <br /> The purpose .of this task is to construct a new northwest embankment for Pond 22-P10, <br /> repair damage to the adjacent haulage road, and install a new culvert under the road. <br /> Work Description <br /> A new northwest embankment shall be constructed between the haul road and a prominent <br /> siltstone outcrop on the southwest side of the existing Pond. It will be approximately five <br /> 9 <br />