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HomeMy WebLinkAbout4.a. Stiles Drainage Issue at 3515 147th Street W.V4 MEMORANDUM TO: Honorable Mayor and City Council Members Jamie Verbrugge, City Administrator FROM: Andrew J. Brotzler, P.E., City Engineer DATE: September 26, 2003 RE: Response to Public Comment on September 16, 2003 This correspondence is in response to Mr. Stiles comments to the City Council at the September 16, 2003 Regular City Council meeting regarding the drainage issues that exist on his property located at 3515 147 Street West. As you may recall, during the development of the Chippendale Avenue / CSAH 42 project, Mr. Stiles addressed the City Council regarding an existing drainage issue in the rear area of his property. In response to Mr. Stiles' comments, a topographical survey of his rear yard area and a review of the existing storm sewer system were completed. Based on the survey, it was determined that the rear yard area of Mr. Stiles property is fairly flat with several low spots and depressions that appear to retain water. It was also determined that due to the existing elevation of the beehive catch basin located in Mr. Stiles rear yard, the improvement of positive drainage to this catch basin would not be feasible. In reviewing the existing conditions, it was determined that as part of the Chippendale Avenue CSAH 42 project, the existing beehive catch basin and storm sewer located in Mr. Stiles rear yard area could be replaced with a flared end section inlet at an elevation approximately 2 feet lower than the inlet elevation of the existing beehive catch basin. The lowering of the storm sewer outlet for this area would provide for the opportunity to re -grade the rear yard area and improve the drainage. On June 10, 2003, City staff met with Mr. Stiles to review the proposed improvements. At this meeting, and as noted in the attached June 27, 2003 letter to Mr. Stiles, it was discussed that the City as part of the Chippendale CSAH 42 project could replace the existing storm sewer system as proposed but that the re- grading of private property would need to be completed by Mr. Stiles. It was also noted that as the replacement of the existing storm sewer system would require work to be completed by the City's contractor on private property, the City would need to obtain written permission in the form of a right -of -entry from Mr. Stiles prior to proceeding with the work. As a separate item, Mr. Stiles has indicated concerns regarding the paving of his driveway and the drainage issues that would be created by paving his driveway. Upon review of the situation and as discussed with Mr. Stiles, the paving of his driveway and suggested drainage issues that would result along the side yard area of his property is a separate issue from the rear yard drainage issue. To date, City staff is not aware of any documentation that has been submitted to demonstrate that a drainage issue exists or would be created along the side yard area of Mr. G:\ ENGPROA344 \councilmemo.092603.doc 1 Stiles' property as a result of paving the driveway. At this time, the proposed storm sewer modifications as outlined above have been deleted from the Chippendale Avenue / CSAH 42 project. It should be noted that future improvements along Chippendale Avenue would likely include only the improvements proposed above and as outlined in the June 27, 2003 letter to Mr. Stiles. Grading modifications that may be necessary to improve drainage would still be the responsibility of the property owner to complete. Should you have questions regarding the above, please do not hesitate to contact me at 651.322.2025. G:\ENGPROJ\344\councilmemo.092603.doc 2 CITY OF ROSEMOU NT June 27, 2003 Eugene T. Stiles 3515 147 Street West Rosemount, NIN 55068 RE: Chippendale Avenue Rear -yard Drainage Issues Dear Mr. Stiles: CITY HALL 2875 — 145th Street West Rosemount, MN 55068 -4997 Phone: 651 - 423 -4411 Hearing Impaired 651- 423 -6219 Fax: 651- 423.5203 This letter is serving as a follow -up to our meeting held on June 10, 2003, regarding your rear - yard drainage problems. At this meeting, it was proposed that the existing catch basin located in your backyard be replaced with a flared end section to give up to 2 feet of extra depth for positive drainage. It was noted that a small area of approximately 20 -feet in diameter, with the flared end section being the center, would need to be graded to complete the construction. For the City's contractor to complete this work a representative from the City will meet with you to have you sign a right -of -entry form before construction commences to allow us on your property. The contours on the attached map show that your backyard is very flat with separate low -lying areas. The installation of the flared end section will not alleviate all of the drainage issues in your backyard without the effort of additional grading that must be taken on by yourselves as the homeowners. If you have any questions or comments regarding this letter please contact me immediately at 651- 322 -2724. Sincerely, 94 W - �� Anthony A. Aderhold Project Engineer Cc: Jamie Verbrugge, City Administrator Andrew J. Brotzler, City Engineer � _ shed , ARDF FIRE PIT 20' AI 4' z0 ,< i, x BLDG � x -+' HOUSE EX.STORM CB CB TC =960 TOP 959.84 INV. 957.1 3 INV 958.00 - - -- 3 1 8" 30 _ \`�_ EX A r CB � A @ bTB \ / -GA A INV = 98:15 _79-6 _ V 41 +00 42+00 21 " RCP , 30' RCP EX CB , `,T C =9 61.:1 0 III 8 8 �, II i 5 / 5 /5' ---- . S17ORM CB 1 = 960.37 T V. 955.57 x- CB - - -- -- C =961. 10 EX-STORM TC =960. 9 INV. 956. EX-STORM MH TC= 960.69 INV. 951.79