10-09-2002 Council Agenda - Laserfiche WebLink

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uu /1U /UZ TUE 13:04 TEL 6517300840 PROTERRAJOESIGN T:Jliams WILLIAMS ENERGY SERVICES INTER - OFFICE CORRESPONDENCE )ATE: September 3, 2002 :0: Don Jensen rROM: Andrew Livingston ;OBJECT: . 280:M063 The Preserve Tract3318 Ramsey County, Minnesota %FE: 280- 2002 -08978 A. review of the drawings submitted by ProTerra Design Associates, Inc. showing WPL f I -6 ", #2 -6 ", #4 -12" lines :rossing the subject development has been completed. In particular, the drawings titled "The Preserve Little Canada, Minnesota ", Drawing Nos: C2.I, C3.1 C4.1, LI..1':and Metro Land Surveying and Engineering Drawings -Topo and Boundary" and "Preliminary Plat" as well as Williams Pipeline Company (WPL) - Alignment Drawing No's. DMA - 043 -49, and DMA - 043 -49D were evaluated. It was determined -that the # 1 -6" line in this area bctones to MCI -World Com. The discussions to follow will therefore be limited to the remaining #2 -6" and #4 -12" lines. •Ptease.note: All pipeline engineering station numbers (ESN).stated below pertain Ro the #4.12" ESN and are scaled from the drawings. The first area dfconcern is the proposed Preserve Court road.viithin our pipeline Right of Way and running parallel to our pipelines from pipeline ESN 13479 +02 to ESN 13474 +48. The distance front the edge of pavement to our: #4 -12 ", which is the closest pipeline to it, varies from.18 feet to 31 feet. Due to the separation between the road and our pipeline and the depth ofour line (approximately 3 feet), our line wil{ be out ofthc zone of any additional stress resulting from the road construction. The second area of concern is the proposed Preserve Trail road crossing the pipelines at our pipeline ESN 13470 +00. The proposed depth of cover at the crossing is'4 feet. Analyzing the induced stress due to external loads using.Pisces.it was determined that the proposed road passcs all the criteria of API 1102 and is satisfactory. Furthermore; the depth of cover noted above meets WPL minimum requirement a$ stated in our Encroachment The third: area of concern is the distance between the pipeline and the proposed dwelling at Block 2, Lot 1. The proposed distance is approximately 26 feet from the #4-12 •pipeline. D.O.T Part 195 Paragraph 210 specifics a minimum distance of 50 feet between a pipeline and dwelling or a minimum over of 48 inches if the distance cannot be obtained. Our easement at this point extends.to the north property line of tract 3318B approximately 16 feet north of the # 4 -12 ". While we have no control over this area since it is outside of our right of way easement it is highly recommended that the placement of the dwelling on this lot be oriented to provide the maximum separation between it and our pipeline. The final area of concern is the landscaping over the pipeline right of way. WPL IEncroachment Guidelines state that no trees orshrubs 3 feet or taller at maturity are permitted on our right -of -way. This would include the area on thesouth side of the entrance road to Road ESN 5 +65 and the road crossing at Preserve Trail within the limits of 2002