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Home My WebLink About2003-08-11 BRAA Memo Re Menards PondBonestroo, ME:= Rosene Anderlik & Memo Associates En & Architects Project Name: Kohl's Development / Menard's Pond Expansion To: Dennis Postler From Jason Swenson Re: Draina Review of Menards Pond Expansion i n t: C it y of ak Park Hei File No: 55-03-000 Date: Au 11, 2003 ( FILE ) This memo summarizes a draina review of the proposed Menard's Pond Expansion to accommodate the adjacent Kohl's Development, located directl to the east of Krue Lane. The 1995 Annexation Area Surface Water Mana Plan (SWMP) identifies a re pond in the northwest corner of the propert for the proposed Kohl's development. The pond was desi to serve areas located on that parcel, as well as the parcel(s) located to the east of the existin Wal-Mart store for rate control purposes. The current development proposal for the Kohl's development includes no on-site water q ualit y or rate control features. Instead, the developer proposes to expand the pond located north of Menards, west of Krue Lane. Ultimatel this is t last pond servin the Cit of Oak Park Hei before draina crosses Hi 36 into the Cit of Stillwater. The developer proposes increasin the size of the Menards Pond b 0.8 acres of surface area. The expansion results in an approximatel 8.5 acre-feet of additional flood stora volume. In addition, the outlet from the pond would be modified to provide rate control for smaller storm events. No infiltration is assumed in these calculations. The followin table details the peak dischar rates from the modified Menard's Pond for various storm events. Hi water levels for the 1 00- storm are also shown for comparison. These conditions reflect ultimate development, and assume the parcel located to the south of Applebee's handles its storm water rate control either on site or b reroutin storm water to an enlar pond to the south of Wal-Mart. Bonestroo, Rosene, Anderlik and Associates, Inc. www.bonestroo.com ❑ St. Paul Office: El Milwaukee Office: ❑ Rochester Office: 2335 West Hi 36 1516 West Me Road 1127 1h Street NE St. Paul, MN 55113 Me Wl 53092 Rochester, MN 55906 Phone: 651-636-4600 Phone: 262-241-4466 Phone: 507-282-2100 Fax: 651-636-1311 Fax: 262-241-4901 Fax: 507-282-3100 ❑ Willmar Office: 205 5th Street SW Willmar, MN 56201 Phone: 320-214-9557 Fax: 320-214-9458 ❑ St. Cloud Office: 3721 23`d Street S St. Cloud, MN 56301 Phone: 320-251-4553 Fax, 320-251-6252 ❑ Gra Office: 888 East Belvidere Road Gra IL 60030 Phone: 847-548-6774 Fax: 847-548-6979 1.5-Year Event 10 -Year Event 100 -Year event 100 -Year Event (2.8 inches) (4.2 inches) (5.9 inches) (5.9 inches) Hi Peak Discha Peak Discha Peak Dischar Water Level 1995 SWMP 20 c,,. fe 26cfs 36cfs 923.5 feet Menard's Pond Expansion 5.0 c.. 8.0 cfs 14.0 cfs 923.7 feet Bonestroo, Rosene, Anderlik and Associates, Inc. www.bonestroo.com ❑ St. Paul Office: El Milwaukee Office: ❑ Rochester Office: 2335 West Hi 36 1516 West Me Road 1127 1h Street NE St. Paul, MN 55113 Me Wl 53092 Rochester, MN 55906 Phone: 651-636-4600 Phone: 262-241-4466 Phone: 507-282-2100 Fax: 651-636-1311 Fax: 262-241-4901 Fax: 507-282-3100 ❑ Willmar Office: 205 5th Street SW Willmar, MN 56201 Phone: 320-214-9557 Fax: 320-214-9458 ❑ St. Cloud Office: 3721 23`d Street S St. Cloud, MN 56301 Phone: 320-251-4553 Fax, 320-251-6252 ❑ Gra Office: 888 East Belvidere Road Gra IL 60030 Phone: 847-548-6774 Fax: 847-548-6979 As part of the permitting process, the BCWD modeled the 1995 Annexation Area in XP -SWMM to verify compliance with the BCWD rules. The model is generally consistent with the city of oak Park Height's updated HydroCAD model. The District's model assumes ultimate conditions and further improvements to the Applebee's pond, similar to what is assumed in the city of oak Park Heights' model. The BCWD's model and memo dated August 7, 2003, show the proposed improvements to the Menards Pond meet the peak discharge requirements of the BCWD rules. As modeled, the results are generally consistent with the results of the City of oak Park Heights' HydroCAD model. The BCWD's volume control rules do not apply due to the cooperative agreement between the city of oak Park Heights and the City of Stillwater. The BCWD also conducted a review of the water quality features in the Annexation area. The model was not received in time to adequately review it prior to the preparation of this memo. The memo dated August 7, 2003 does show that the proposed system meets the requirements of the BCWD for water quality. Summary: As proposed, the Menard's Pond expansion meets the BCWD rules for peak rate control and water quality. The proposed expansion and outlet modifications meet the requirements of the 1995 Annexation Area SWIVIP, with a slight increase in the 100 -year HWL to 923.7. The BCWD's volume control rules do not apply due to the cooperative agreement between the City of oak Park Heights and the City of Stillwater. Approval of the proposed pond expansion and outlet modifications is recommended. K:1551 55030001 Storm_ Sewer_4r_Drainagelwatershed\DMP _JAS "Menards Pond Expnasion Memo 08112003.doc Bonestroo, Rosene, Anderlik and Associates, Inc. www. bones lroo.corr ❑ 5t. Paul office: Office: 2335 West Highway 36 Road St. Paul, MN 55113 Phone: 651 -536 -4600 6774 Fax: 651 -- 636 -1311 ❑ Milwaukee Office: 1516 West Mequon Road Mequon, Wl 53092 Phone: 262-241-4466 Fax: 262 -241 -4901 ❑ Rochester Office: 1127 Ih Street NE Rochester, MN 55906 Phone: 507 - 282 -2100 Fax: 507- 282 -3100 ❑ Willmar Office: 205 5th Street SW Willmar, MN 56201 Phone: 320 -214 -9557 Fax: 320 -214 -9458 ❑ St. Cloud Office: 3721 23 "' Street S St. Cloud, MN 56301 Phone: 320 -251 -4553 Fax: 320 -251 -6252 ❑ Grayslake 888 East Belvidere Grayslake, IL 60030 Phone: 847-548 - Fax: 847- 548 -5979