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Home My WebLink AboutFile Documents.909 E Hopkins Ave.0056-2021-BRES (5) "I tI I t JVA,Incorporated 817 Colorado Avenue Suite 301 Glenwood Springs, CONSULTING ENGINEERS CO 81601 January 12, 2022 970.404.3100 info@jvajva.com City of Aspen Engineering Department City Hall www.jvajva.com 130 S. Galena Aspen, CO 81601 RE: 905 Hopkins Avenue Residence Comment Response Letter JVA Job No. 3382c the rece Dear Engineering Department: submittE 1. Max Q shall be calculated for the inlet. Then, show that the inlet has capacity to intercept flow shows tl the dryv with a .50 clogging factor per section 4.7.3 in the City of Aspen URMP. Please c for each JVA Response:A figure has been added to the end of the drainage letter showing the max on pg 2; and that the inlet has capacity with a .50 do::in:factor. drainagc trench d • i - . - •. . - • ' e, a, con -c • e' - : . e • a' a:e - o area dre the property or 2. the drainage system within the ROW, without negatively impacting neighbors. 4"x4" fits Conveyance to curb and gutter in roadway must be shown. If the project team elects to tie into the neighboring properties on-site curb, a drainage easement would be required. Another option to explore is the re-grading of the alley. Please include discussion of JVA Response: The drainage pan has been extended beyond the driveway aloe proposed curb in to capture flows from the alley and convey them into the existing curb and gut, drainage report for the wall. 909 E Hopkins. By routing the stormwater from the alley across the property line to the neighboring properties curb and gutter we are matching the intended previous design. According to page 2 of the drainage report for the previous development done by Timberline Engineering, LLC. "drainage from offsite and adjacent properties will be deflected at the property lines using mountable curb &gutter (spill type)... ". e. e c -. • - . e- .s .. o •i - . • so -• s e e . '•n .c info: Provide e; the transfc Ron Christian Easement Electric Superintendent be 11'xl8 (970) 274-2492 clearance ron.christian@cityofaspen.com side of the transform On next •lanset please call out transformer type and clearances from structures and p operty of clearan line : front. JVA Response:After a conversation between the MEP designer and Ron Christia , - . transformer has been relocated, and a note has been added to reference COA Electrdcl 18/2 0 2 2 BOULDER FORT COLLINS WINTER PARK GLENWOOD SPRINGS DENVER ASPEN BUILDING DEPARTMENT Provide spot 905 Hopkins Avenue Residence elevations at the 01/12/2022 location where the 2 of 2 overflow path will cross the sidewalk to 4. Overflow p ensure that drainage will successfully reach the curb and gutter in the roadway. Addi will successfully s not linear and therefore would impact the neighboring property a; sh cross the sidewalk to path that does not rely on neighboring property. meet the curb and JVA Re gutter. een revised to route water to a new overflow path that does not impact the neighboring property. The overflow path line has been updated to reflect this more accurately. 5. Include City of Aspen Water Detail Sheet in planset. JVA Response: The City of Aspen Water Detail Sheet has been included in this plan set as sheet C1.1. Sincerely, NA, INCORPORATED By: J.R. S g,Senior Project Project Manager RECEIVED O1/18/2022 ASPEN BUILDING DEPARTMENT 0056-2021 -BRES_909 E Hopkins_Engineering Comments2 40.Drainage Report.909 E Hopkins (905 Lot 2).2021.10.06.pdf(1) ® Subject: Dev Rev - Page: 22 Max Q shall be calculated for the inlet. Then, show Author: carlym that the inlet has capacity to intercept flow with a Unit: Count .50 clogging factor per section 4.7.3 in the City of Ff. File Name: 40.Drainage Report.909 E Hopkins (905 Lot Aspen URMP. 2).2021.10.06.pdf 90.Civil Plans.909 E Hopkins (905 Lot 2).2021.10.06.pdf(4) Subject: Dev Rev-___ Page: [2] C1.0 GRADING, DRAINAGE,AND UTILITY PLAN Show that water in the valley pan at the driveway Author: carlym connects to either: Unit: Count 1.the drainage system on the property File Name: 90.Civil Plans.909 E Hopkins(905 Lot or 2).2021.10.06.pdf 2.the drainage system within the ROW,without negatively impacting neighbors. Coneveyence to curb and gutter in roadway must be shown. If the project team elects to tie into the neighboring properties on-site curb, a drainage easement would be required. Another option to explore is the re-grading of the alley. , Subject: Dev Rev ,gym' _` % % Page: [2] C1.0 GRADING, DRAINAGE,AND UTILITY PLAN Please schedule a meeting with Ron Christian to ] = ;'FRI Author: carlym discuss the proposed transformer. 4' --, Unit: Count s_ Contact info: File Name: 90.Civil Plans.909 E Hopkins(905 Lot 2).2021.10.06.pdf Ron Christian Electric Superintendent (970)274-2492 ron.christian@cityofaspen.com On next planset, please call out transformer type and clearances from structures and property lines. 4 Subject: Dev Rev w „ - , \::/ Page: [2] C1.0 GRADING, DRAINAGE,AND UTILITY PLAN Overflow path must show that drainage will Author: carlym successfully reach the curb and gutter in the Unit: Count roadway. ,r' File Name: 90.Civil Plans.909 E Hopkins(905 Lot 2).2021.10.06.pdf Additionally, drainage pattern is not linear and therefore would impact the neighboring property as shown. Please show drainage path that does not rely on neighboring property. Subject: Dev Rev Page: [3] CD1.0 SITE DETAILS Include City of Aspen Water Detail Sheet in I Author: carlym planset. Unit: Count File Name: 90.Civil Plans.909 E Hopkins(905 Lot 2).2021.10.06.pdf RECEIVED 01/18/2O22 ASPEN BUILDING DEPARTMENT