10-23-2002 Council Agenda - Laserfiche WebLink

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10/07/02 08:01 V612 633 5464 wpt. NRO Williams WILLIAMS ENE GY SF,RVICES INTER - OFFICE CORRESPONDENCE DATE: September 3, 2002 TO: Don Jensen FROM: Andrew Livingston SUBJECT: 280:M068 The Preserve Tract 3318 Ramsey County, Minnesota AFE: 280 - 2002 -D8978 U003/004 A review of the drawings submitted by ProTerra Design Associates, Inc. showing WPL #1 -6 ", #2 -6 ", #4 -12" lines crossing the subject development has been completed. In particular, the drawings titled "The Preserve Little Canada, Minnesota ", Drawing No's. C2.1, C3.1 C4.1, L1.1 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 belongs to MCI -World Corn. The discussions to follow will therefore be limited to the remaining #2 -6" and #4 -12" lines. Please note: All pipeline engineering station numbers (ESN) stated below pertain to the #4 -12" ESN and are scaled from the drawings. The first area of concern is the proposed Preserve Court road within our pipeline Right of Way and mmming parallel to our pipelines from pipeline ESN 13479 +02 to ESN 13474 +48. The distance from the edge of pavement to our #4 -12", which is the closest pipeline to it, varies from 18 feet to 31 feet. In the area, which includes Lots 1 through Lot 5, the road should be constructed to maintain a distance of 40 feet from the southerly edge of the road to the #4 -12 inch pipeline. Due to the separation between the road and our pipeline and the depth of our line (approximately 3 feet), our line will be out of the 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 passes all the criteria of API 1102 and is satisfactory. Furthermore, the depth of cover noted above meets WPL minimum requirement as stated in our Encroachment Guidelines, 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 47 feet from the #4.12" pipeline. D.O.T Part 195 Paragraph 210 specifies a minimum distance of 50 feet between a pipeline and dwelling or a minimum cover 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 Encroachment Guidelines state that no trees or shrubs 3 feet or taller at maturity are permitted on our right -of -way. This would include the area on the south side of the entrance road to Road ESN 5 +65 and the road crossing at Preserve Trail within the limits of our right of way.