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• Rice Creek Watershed November 29, 1999 John Powell, City Engineer City of Lino Lakes 600 Town Center Parkway ' Board of Managers Lino Lakes MN 55014 -1182 Regular Meetings: 2nd and 4th Wednesdays Shoreview City Hall Subj: Oakbrook Peninsula— Proposed Easement Vacation; RCWD Permits #90 -14, 92 -1 V & 93 -167 KATE DREWRY, District Admin. BONITA TORPE, Admin. Assist. 3585 N. LEXINGTON AVENUE , SUITE 330 ARDEN HILLS, MINNESOTA 55126-8056 PHONE (651) 766 -4191 • FAX (651 1 766 -4196 www.mnwate .htm drewr001 @tc.0 Dear Mr. Powell: The District Engineer has completed his review of the supplemental information provided by Robert Adamson, and a copy of his report and findings (dated 11/17/99) is enclosed. In summary, it appears that the District's compensatory storage requirement has been fulfilled, although not in the manner specified in the original grading plan and permit. At this point, we do not see a need to regrade the entire easement area to bring it into conformance with the original grading plan. However, we do recommend that the swale from the Schwartz property line to the pond be regraded as discussed in the enclosed report. With regard to the proposed easement vacation, as a minimum, easement should be retained over the existing pond, the drainage swale and any area below Otter Lake's HWL of 912.9. We feel that any decisions relative to vacation of other Sportions of the easement are best left to the City as we understand that there are a number of ancillary issues unrelated to the District's permit requirements. • Lastly, we would point out that our findings relative to compensatory storage are based on the survey information furnished by the developer. Since the survey was prepared by a reputable Registered Land Surveyor, we have no reason to question its accuracy. However the Schwartzes have pointed out discrepancies between the E.G.Rud survey and a survey done by Advance Surveying and Engineering, and have requested further verification of the elevation data upon which the compensatory storage calculations are based (refer to letter dated 11/2/99 from the Schwartzes which you were previously copied on). We must advise that the District is not in a position to provide such verification and leave it to the City to determine if you feel it is appropriate. Please let me know if you have further questions on this matter and keep us appraised of its final disposition. Sincerely, Kate Drewry District Administrator bct Enclosures: 1 - c: Paul & Julie Schwartz, 2140 Otter Lake Dr., White Bear Lake, MN 55110 Elizabeth Melton, 2150 Otter Lake Drive, White Bear Lake, MN 55110 Robert Adamson, 6001 Sargent Court N., White Bear Lake, MN 55110 Derek Knapp, PE, Montgomery Watson Engineers Board of Managers (5) Correspondence RCWD File #93 -167 A.I. CARDINAL, SR. \N(H. \l lq Ntv TOM WADDELL BOARD OF MANAGERS ROBERT M. HL LT ■• \.HIN(T( IN ( (I( N "1 ORDEEN I. BRAATHEN I:\\I',l (l)IiN'1Y EUGENE L. PETERSON \N( H:,\ (1)1 ∎NT1 MON TGOME RY WATSON (on.ulling Engineer, 612-59 i `555) • (,(ounx•1 i-H SROLI) H. SHEFF 612. 412.1(551. MICHELLE 1. 01 R10E1 651- 649 -4545