Agenda - 02-20-2001-9f - Laserfiche WebLink

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33 Memo To: Craig Benedict, Planning Director Memo From: Keith Rosemond, Erosion Control Inspector Date: October 9, 2000 Subject Erosion Control Chronology of Proposed Sunrise Road Subdivision Erosion Control received complaint that land disturbing activities were taking place at the site of the proposed subdivision belonging to Mr. Wally Diehl. Investigation on Dec. 2, 1999 revealed that trees had been removed, existing groundcover removed, and a culvert had been installed along the low area of the property. The culvert is approximately 120' long and the diameter of the pipe is 36". A 6' to 8' high earthen berm was also constructed along the I-40 side of the site. The berm had been stabilized with a groundcover of pipe straw. ,The areas disturbed are relatively consistent with details shown on the erosion control plan. According to the plan application, the entire site consists of 21.3 acres and the area disturbed is 1.64 acres. The property is bisected by a channel draining west to east out to Sunrise Road (S.R. 1732). Almost all of the Diehl property drains to this drainage feature. The steepest slopes above the drainage feature are 15 to 20 % slope. At the time on Dec. 2, 1999 that Erosion Control was investigating the complaint, the contractor had completed clearing and was finishing seeding and mulching the disturbed areas. I was told the contractor was preparing to pull off the site. A Stop Work order was issued at the site on December 3, 1999. A Certified Mail Notice of Violation letter to Mr. Diehl containing written notification that a Stop Work Order was mailed on December 3, 1999. A follow-up inspection was done at the site on either Dec. 6d' or 7d'. Disturbed areas were covered with mulch. No additional work had been done. In order to resolve the Notice of Violation and bring the site into compliance, Mr. Diehl was instructed by the letter of Dec. 3, 1999 to complete the following: - Submit a complete application for Erosion Control Approval and Grading Permit - Pay all required fees. Since there was a violation fees were doubled. - The Erosion Control Plan must be approved and the Grading Permit purchased. - Installation of a sediment control device to capture and treat stormwater from the disturbance. The application and plan were submitted on December 20, 1999. The fees were also paid on Dec. 20d'. The Plan Review Fee totaled $353.00 and the Grading Permit Fee totaled $836.00. Doubled the total paid was. $2,378. The Erosion Control Plan approval letter was sent to Mr. Diehl on May 2, 2000. An inspection was made on either Dec. 21" or 22d. A sediment trapping device had been installed below the outlet of the culvert. The device consisted of series of stone filters. An inspection of the site was made in early January 2000. Grass had come up. The quality of the groundcover provided by the vegetation and mulch was fairly good. Visited site on September 14, 2000 after receiving complaint of turbid runoff below site. It was obvious that improvements to the groundcover and sediment trapping device were needed. Some sediment was observed in the channel below the disturbed area. A letter was sent to Mr. Diehl on September 15, 2000. In order to prevent additional soil loss and potential off site sediment damage he was asked to: (1) install the sediment trap shown in the sediment control plan.