Laserfiche WebLink
~~\', <br />REFUSE AREA "SPECIAL FOCUS" INSPECTION REPORT ADDENDUM <br />Various issues were left open in <br />pending further detailed review. <br />completed, and results of the <br />addendum. <br />the August 29 inspection report, <br />The additional review has been <br />review are set forth in this <br />Piezometer #307 <br />The operator has experienced difficulty in monitoring of this <br />piezometer due to apparent constriction or obstruction. Due to the <br />absence of features indicative of slope instability on CRDA #1, and <br />based on the fact that the remaining assemblage of 29 piezometers <br />has documented no problematic ground water elevations, the Division <br />is not at this time requesting that the piezometer be replaced. <br />Monitoring should be continued, with failed attempts documented in <br />the monitoring record. Future changes in hydrologic <br />characteristics or other stability indicators may warrant <br />reconsideration. Refer to Attachment 1; September 12, 1997 memo <br />from Jim Pendleton to Dan Mathews. <br />Refuse Area Reclaimed Slope Compliance Evaluation--CRDA ;V2 - <br />Permit narrative specifies maximum 2.5:1 (408) slopes with 10' wide <br />benches (terrace drains) on 30' intervals above the lower bench, <br />which is a maximum of 50' in height. Terrace drains are to be <br />graded to the inside at 28-58, and graded to drain to perimeter <br />ditches at 28-58. With only a couple of very minor exceptions <br />(within the probable error range of the measurement techniques <br />employed) reclaimed slope gradients, bench heights, and terrace <br />drain dimensions were within the design parameters specified in the <br />permit narrative. Reclaimed slopes and terrace drains evaluated on <br />CRDA #2 are judged to be in compliance with the approved plan. <br />Slope measurements were made along several transects, using a 300' <br />tape and abney level. Vertical spacing of terrace drains was <br />estimated by applying appropriate trigonometric formula to measured <br />slope distances. <br />Transect 1 was located approximately 75 yards from the eastern end <br />of the refuse area, and extended from the top of the rough graded, <br />bare refuse Bench #4, to the base of the Bench #2 outslope <br />1 <br />