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Home My WebLink AboutNEW BELGIUM BREWERY - OVERALL DEVELOPMENT PLAN - 1-95C - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT2.2 Sub -basin Description The CDP area has been divided into two basins and shown on the Conceptual Drainage Plan as the West Basin and East Basin. The West Basin includes the area that is currently developed and contains the existing New Belgium Brewery as well as a portion of the undeveloped area. The East Basin includes the remaining CDP area and is entirely undeveloped. 3. DRAINAGE DESIGN CRITERIA 3.1 General Concept In general, the drainage design of the two areas in this CDP will be required to conform to the previously completed drainage studies and plans that govern the drainage design of the existing New Belgium Brewery. The drainage design of the CDP area will be required to accommodate the Rainfall Intensity -Duration -Frequency curve data adopted by the City of Fort Collins on March 26, 1999. The basins in the CDP area will also be required to provide water quality enhancement in conjunction with the drainage design of each basin. 3.2 West Basin The West Basin contains approximately 22 acres and contains the western half of the ' CDP area. The parcel is bounded on the south by Buckingham Street, on the west by Linden Street, on the north by the City of Fort Collins Street Facilities and on the east by ' undeveloped property. The east portion of the basin is currently undeveloped and covered in grasses and trees. This portion of the basin is characterized by two large piles ' of lime dumped on this site which cause indirect drainage patterns in this area. The west portion of the basin is currently developed and slopes to an existing detention area along Buckingham Street. ' The existing detention area will be enlarged and reconfigured to serve the entire West t Basin. Since there is no existing Master Plan for this area that dictates a release rate, the release from the detention pond will be restricted to the 2-year historic rate. The flows ' from this pond will be conveyed in the existing drainage system to the south and into the Poudre River. 1 2 5. 1 2. 3 REFERENCES City of Fort Collins, "Storm Drainage Criteria Manual", (SDCM), dated March, 1986. "Drainage and Erosion Control Report for New Belgium Brewery, Fort Collin, Colorado" by Water, Waste & Land, Inc. dated March 30, 1995. The "Final Drainage and Erosion Control Report for New Belgium Brewery First Filing" by JR Engineering, Ltd., dated December 23, 1997. 4. "Final Drainage, Erosion and Storm Water Quality Study East Vine Streets Facility P.U.D., Phase One Final, City of Fort Collins,", RBD Inc, Engineering Consultants, dated June 28, 1993. n ' 3.3 East Basin ' The East Basin contains approximately 28 acres and encompasses the eastern half of the ODP area. The parcel is bounded on the south by.Buckingham Street, on the east by ' Lemay Avenue, on the north by the City of Fort Collins Street Facilities and on the west by undeveloped property. This basin is entirely undeveloped and covered in grasses and ' trees. The basin slopes to the southeast at approximately 0.4% ' A detention area for this basin is proposed in the southeast corner of the site. This pond will release into an existing 15" RCP at the intersection of Lemay and Buckingham. This pipe will convey the flows under Buckingham and into the existing ditch along the west ' side of Lemay Avenue. This ditch conveys the flows south to the Poudre River. Since there is no existing Master Plan for this area that dictates a release rate, the release from ' the detention pond will be restricted to the 2-year historic rate. ' 4. CONCLUSIONS 4.1 Compliance with Standards All computations in conjunction with preliminary and final development plans (PDP and ' FDP) completed for the ODP areas shall be in compliance with the City of Fort Collins Storm Drainage Design Criteria Manual and the Erosion Control Reference Manual for Construction Sites. 4.2 Drainage Concept ' The Overall Development Plan area shall be designed to meet the criteria set forth in the ' Manuals noted above. Both basins will require detention prior to release into existing conveyance systems. All runoff from the ODP area will eventually be conveyed in existing storm drainage systems to the Cache La Poudre River. IF 1. GENERAL LOCATION AND DESCRIPTION 1.1 Location and Description of Property The subject property is located in east of downtown Fort Collins on the north side of Buckingham Street, east of Linden Street and west of Lemay Avenue. The property contains a total of approximately 49 acres. The entire property is located in the Northeast Quarter of Section 12, Township 7 North, Range 69 West of the Sixth Principal Meridian, in the City of Fort Collins, Larimer County, Colorado. Forty-two acres of the property is currently undeveloped and the remaining 7 acres contains the existing New Belgium Brewery. The undeveloped area has a high point new the center of the property and the property slopes to the southwest at varying rates and to the southeast at approximately 0.4%. See the drainage plan in the back pocket for approximate contours indicating the slope of each basin. See Section 3 for specific information on each basin. There are no specific improvements planned for the undeveloped 42-acre parcel at this time. Specific uses for this area will be determined when final development plans are completed. 1.2 Purpose of Report The purpose of this report is to establish criteria that will be utilized when development of the property in the Overall Development Plan (ODP) area occurs. 2. DRAINAGE BASINS AND SUB -BASINS 2.1 Major Basin Description I' The proposed ODP area lies within the Cache La Poudre River Drainage Basin. The ODP area has not been included in any master drainage plan to date. Drainage reports I , have been completed for the developed New Belgium Brewery area including the "Drainage and Erosion Control Report for New Belgium Brewery, Fort Collin, Colorado' I ' by Water, Waste & Land, Inc. dated March 30, 1995 and the "Final Drainage and Erosion Control Report for New Belgium Brewery First Filing" by JR Engineering, Ltd., dated December 23, 1997. 1 TABLE OF CONTENTS TABLEOF CONTENTS............................................................................................................... iii 1. GENERAL LOCATION AND DESCRIPTION 1.1 Location and Description of Property ......................................................................1 1.2 Purpose of Report ....................................................................................................I 2. DRAINAGE BASINS AND SUB -BASINS 2.1 Major Basin Description..........................................................................................1 2.2 Sub -Basin Description.............................................................................................2 3. DRAINAGE DESIGN CRITERIA 3.1 General Concept......................................................................................................2 3.2 West Basin...............................................................................................................2 3.3 East Basin................................................................................................................3 4. CONCLUSIONS 4.1 Compliance with Standards....................................................................................3 4.2 Drainage Concept....................................................................................................3 5. REFERENCES....................................................................................................................4 iii I � North Star ' ftemw design _ September 8, 2000 Basil Hamdan City of Fort Collins Stormwater 700 Wood Street Fort Collins, CO 80522-0580 ' RE: Overall Drainage Concept for the Overall Development Plan for New Belgium Brewery ' Dear Basil, I am pleased to submit for your review and approval, this Overall Drainage Concept for the ' Overall Development Plan for New Belgium Brewery. I appreciate your time and consideration in reviewing this submittal. Please call if you have any questions. Sin , Patricia Kroetch, P.E. ii I' 1194 W. Ash Street, Suite 8 Windsor, Colorado 80550 970-SSS-6939 Phone • 970-686-1188 Fax OVERALL DRAINAGE CONCEPT FOR THE OVERALL DEVELOPMENT PLAN FOR NEW BELGIUM BREWERY Prepared for: The Neenan Company 2290 E. Prospect Road Fort Collins, CO 80522 Prepared by: North Star Design, Inc. 1194 W. Ash Street, Suite B Windsor, Colorado 80550 (970)686-6939 September 8, 2000 Job Number 110-06