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uailuiuz '1UB' 1S: u4 '1'l;L (1517300848 PROTERRA~ESIGN <br />'1/11 mS <br />~,:'" <br />yV~.Y,,LIAIV~S ENEl.2GX ~IER`V~CES <br />INTER-OFFCCE COR~2E51'ONDENCE <br />tATE: September 3, 2002 <br />'O: Don Jensen <br />FROM:' Andrew Livingston <br />iUBJECT:' . '280:M068 The Preserve <br />Tract 3318 ' <br />Ramsey County, Minnesota ~ ' <br />qpE: Z80-2002-D8978 <br />4 reviewmf the drawings submitted by Pro'Cerra Design Associates, Inc. showing WPL #1-6", #2-6", A4-12" lines <br />:Tossing the subject development has been completed. In particular, the drawings titled "The Preserve Little <br />Canada, Minnesota", Drawing No's: C2.1, C3.1 C4.1, LI,.I';and Metro Land Surveying and Engineering Drawines <br />''Tops and Boundary' and "Preliminary Plat" as well as Williams Pipeline Company (WPL) -Alignment DrawmE <br />No's. DMA•043-49, and DMA-U43-49D were evaluated. [f was datermined.that the # 1-6" line in this area belongs <br />to MCI-World Com, The discussions to follow will therefore he limited to the remaining #2-6" and #4-12" lines. <br />Please note: All pipeline engineering station numbers (ESN) stated below pertain Co the #4.12' ESN and are <br />seated from the drawings. <br />The first area 6f concern is the proposed Preserve Coutt road.viithin our pipeline Right of Way and running <br />parallel to our pipelines from pipeline ESN 13479+02 to ESN 13474+48. The distance from the edge of pavement <br />m our #4-t2",which is the closest pipeline to it, varies from J 8 icet to 31 fret. Due to the separation between thu <br />road and our pipeline and the depth ofour line (approximately 3 feet), our fine will he out ofthe zone of any <br />additional stress resulting from the road construction. , <br />The second area of concern is the proposed Preserve Trail road crossing tfie pipelines at our pipeline ESN <br />13470+D0. The proposed depth of cover at the crossing is~4 feet. Analyzing the induced stress due to external loads <br />using.Pisces.itwos determined that the proposed road passes all the criteria ofAPl 1102 and is satisfactory. ' <br />Furthermore: the depth of cover noted above meets WPL minimum requirement as stated in our Encroachment <br />Guidelines_':: . <br />The third area of concern is the distance between the pipeline and the proposal dwelling at Block 2, Lot !. The <br />proposed distance is approximately 26 feet from the N4-12"pipeline. D.O-T Part 19S Paragraph 210 specifics a <br />minimum distance of SO feet between a pipeline and dwelling or a minimum cover of 48 inches if the distance <br />cannot be obtained. Our easement at this point extcnds.tc the north property line ofuact 33188 approximately 16 <br />feet north of the N 4-12". While we have no control ovt:r4h'is area since it is outside ofour right ofway easement it <br />is highly recommended that the placement of the dwelling on tftis lot be oriented to provide the maximum <br />separation,bctween ii and our pipeline. <br />'The vnal area of concern is Ehe landscaping over.the pipeline right of way. WPL (Encroachment Guidelines state <br />That no trees or ~sltrubs 3 feet or taller at maturity are permitted on our right-of-way_ This would include the aria on <br />the south side otthe entrance road to Road ESN 5+65 and the road crossing at Preserve Trail within the limits of <br />~ 002 <br />