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(Page 2) MINE ID # OR PROSPECTING ID #: M-ig~R-ns~ INSPECTION DATE: n3/i~/ns INSPECTOR=S INITIALS: ~_ 1. A site inspection of the Durham Pit was made to verify the progress made in installation of the "interim flood control measures" to eliminate the potential for adverse impacts to buildings owned and operated by Bliss Produce Company on the north side of the Cache La Poudre River during a 100-year Flood event. Present during the inspection was Chris Varra and Brad Janes of Varra Companies Inc. and Chris Pauley of Anderson Consulting Engineers. 2. The operator has elected to install a spillway in the far western portion of the existing flood control berm as an interim measure to eliminate the potential for adverse Flooding impacts to the Bliss structures. The spillway will be 475 feet long and approximately 3 feetin depth. The operator had received verbal approval from the Division on March 11, 2005 to begin construction of the spillway. At the time of inspection, this inspector estimated the spillway construction to be 80% completed. The operator indicated that the construction should be completed within the next 24 hours. The construction of the spillway consists of "cutting" a notch to grade in the existing berm. The average depth of cut was estimated to be 3 feet, with depth of cut ranging from 1 to 5 feet. Surveyors were on site to ensure proper depth of cut. A technical revision has been submitted to the Division for review which provides the engineering details of the spillway installation and verification that the reduced height of the expected 100-year Flood surface will be below the foundation elevation of the Bliss structures on the north side of the Cache La Poudre River. In conjunction with the spillway cut, the operator was also reducing the berm between various mined cells at the Durham Pit to facilitate eastward flow of Floodwaters as they pass through the Durham Pit and exit eastward during a 100-year flooding scenario. A substantial volume of earth material was being moved and backfilled into the western most pond at the Durham Pit. Mr. Varra estimated upwards of 100,000 cubic yards of material were being moved the then backfilled. 3. A discussion was held regarding the expected flow path of floodwaters as they pass through the Durham Pit during a 100-year Flood scenario. Mr. Pauley verified that the anticipated floodwaters will Flow through the Durham Pit unimpeded and will be able to safely discharge eastward. It is important to note that during a potential 100-year Flood scenario, the entire area will be under water. Mr. Pauley also verified that the expected Flood water velocities will be relatively low, approximately 2-3 feet per second, as they exit to the east. For the interim measures, there is no expectation or need for a spillway structure at the eastern most portion of the Durham Pit. 4. This inspector estimated the grade or elevation of the 475 foot spillway to be approximately 5 feet above the current water surface of the river, 7 feet above the channel invert, and 8-10 feet below the top of north bank of the Cache La Poudre River. There is a narrow band of riparian vegetation including grasses, sedges, shrubs, and trees between the channel invert and the spillway. The spillway has been strategically located to capture or spill floodwaters onto the Durham Pit "overbank area" with minimal disturbance to the existing riparian vegetation. The operator has committed to maintain the spillway in good working condition prior to, during, and after a Flood event. The Division confirms, via this spillway construction, that the expected Flood waters will enter onto, Flow through, and exit the Durham Pit in a controlled manner. The goal of eliminating the potential for adverse Flood impacts to the Bliss structures should also be achieved. 5. Mr. Pauley verified that the spillway plans had been reviewed by Flood control experts with Weld County and approval for construction of the spillway had been obtained. 6. Digital photographs were taken and are attached to this report.