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Staff Commentsa CITY Of COLLFGF STWHON Home ofTexasAdM University" MEMORANDUM DATE: July 16, 2014 TO: Jesse Durden, Caprock Texas, via; jesse.durden(a)caprocktx.com FROM: Jerry Cuaron, Staff Planner SUBJECT: CAPROCK CROSSING DETENTION POND 2 (SP) Thank you for the submittal of your Site Plan - Commercial application. Carol Cotter, Senior Assistant City Engineer, and I have been assigned to review this project. It is anticipated that the review will be completed and any staff comments returned to you on or before Wednesday, July 30, 2014. If you have questions in the meantime, please feel free to contact us. PC: Brazos Texas Land Development, LLC, via; USPS; 1203 University Drive East, College Station, TX, 77845 Deven Doyen, P.E., Schultz Engineering, LLC, via; devenpschultzengineeringlic.com P&DS Project No. 14-00900177 Planing & Development Services P.O. BOX 9960 • 1101'IEXAS AVENUE • COLLEGE STATION • TEXAS • 77842 TEL. 979,764.3570 - FAX. 979.764.3496 cstx.gov/devservices jsx, I. WO oxf 40 CITY OF COLLECT: STATION Home of'7exas ACM University' MEMORANDUM DATE: July 31, 2014 TO: Jesse Durden, Caprock Texas, via; lesse.durden(&caprocktx.com FROM: Jerry Curaon, Staff Planner SUBJECT: CAPROCK CROSSING DETENTION POND 2 (SP) Staff reviewed the above -mentioned site plan as requested. The following page is a list of staff review comments detailing items that need to be addressed. Please address the comments and submit the following information for further staff review: City of College Station Transmittal Letter; Memo providing written responses to all of staff's comments (i�.entify the specific page that each comment was addressed on or the reason for not addressing the 4 comment); Seven (7) complete sets of site civil construction documents for the proposed development with the revised site and landscaping plans attached (one set will be returned to you, please submit additional copies if you want more than one approved set); Two (2) 24"x36" revised site plans; One (1) 24"x36" landscaping plan; One (1) 24"x36" grading and erosion control plan; Easement Dedication Sheet and required documents (please note that the Site Plan will not be stamped approved until the Blanket Easement, or all other appropriate easements, have been dedicated to the City of College Station). OR Four (4) revised site and one (1) landscaping plan; $ Parkland Dedication fees prior to issuance of a building permit; Easement Dedication Sheet and required documents (please note that the Site Plan will not be stamped approved until the Blanket Easement, or all other appropriate easements, have been dedicated to the City of College Station). Planning & Development Services P.O. BOX 9960 • 1101 TEXAS AVENUE • COLLEGE STAPION - TEXAS • 77842 "I EL 979.764.3570 • FAX. 979.764.3496 cstn.gov/devservices Please note that this application will expire in 90 days from the date of this memo, if the applicant has not provided written response comments and revised documents to the Administrator that seek to address the staff review comments contained herein. If there are comments that you are not addressing with the revised site plan, please attach a letter explaining the details. If you have any questions or need additional information, please contact Jerry Cuaron at 979.764.3570. Attachments: Staff Review Comments PC: Brazos Texas Land Development, LLC, via; USPS; 1203 University Drive East, College Station, TX, 77845 Deven Doyen, P.E., Schultz Engineering, LLC, via; deven(a),schultzengineeringllc.com P&DS Project No. 14-00900177 STAFF REVIEW COMMENTS NO. 1 Project: Caprock Crossing Detention Pond 2 (SP) 14-00900177 PLANNING 1. Please provide a landscape plan per the UDO 12-7.9 (B) and 12-7.10 (B.1) 2. Please note that any changes made to the plans that have not been requested by the City of College Station must be explained in your next transmittal letter and "bubbled" on your plans. Any additional changes on these plans that the City has not be made of aware of will constitute a completely new review. Reviewed by: Jerry Cuaron Date: July 30, 2014 ENGINEERING COMMENTS NO. 1 1. If this phase of detention pond only to mitigate development of Lot 3R, please clarify in report. Otherwise, the post development C value of 0.43 seems low. Report indicates 0.85 for developed conditions. Please provide weighted calculations. 2. What is the velocity of flow out of the detention pond in to roadside ditch? 3. What are flowlines of existing culverts under Old Arrington Road? 4. How are you ensuring that the existing culverts will not be undermined by the directed, concentrated flow? 5. Please provide cross-section at detention pond outfall between detention pond berm and centerline of Old Arrington Road. 6. Limits of detention appear to extend outside boundary of Common Area 2. Provide drainage easement or revise boundary of dedicated common area. 7. What is condition/capacity of existing culverts? Will discharge from detention pond be freely conveyed by culverts, or will water backup in road side ditch and overtop roadway? 8. What is impact of increased flow on drainage way that is between culverts under Old Arrington. Road combined with discharge from Detention Pond 1. Does flow stay within banks? What are impacts of increased velocities? 9. Does the County, TMPA, BTU and or Wellborn SUD have any special requirements for detention/grading and/or outfall in easement or ROW? Have they provided consent? Reviewed by: Carol Cotter Date: July 17, 2014 SANITATION 1. Sanitation is ok with this project. Reviewed by: Wally Urrutia Date: July 21, 2014