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HomeMy WebLinkAboutStaff Comments w . ENGINEERING COMMENTS NO. 3 1. Specify water-tight manholes lids in floodplain areas where rim elevations are lower than BFE, specifically MH No.1. 2. Will an additional valve at the end of waterline W-1 help facilitate the future extension of the line? Or, since you have a tapping sleeve and valve on the 24" line, can the proposed valves be relocated to the opposite (north) sides of the cross fittings? 3. Median drainage - It would be preferable to run the 8-inch perpendicular across the roadway. 4. Median drainage - The geotextile should wrap the perforated pipe and the washed aggregate as an enchilada. To wrap the pipe with the geotextile puts a filter over the perforated hole which will then clog with sediment rendering the system unusable. By wrapping the entire package the drainage area to the hole is increased and should perform better. 5. Median drainage - Please note on the construction plans that the 8" PVC line is a private line and will be privately maintained. Also add a note to the Final Plat Mylar to indicate this. Reviewed by: Carol Cotter Date: October 18, 2006 ENGINEERING COMMENTS NO. 2 1. Why are the street intersections/connections with Castlerock Parkway not shown in the profiles? (Stone Shadow Trail, Rock Bend Drive, Rolling Stone Drive) 2. How will you insure that the drainage will not undercut the roadbed on Stone Shadow Trail, Rock Bend Drive, Rolling Stone Drive, and south end of Rocky Creek Trail? 3. Indicate limits of structural backfill on Storm Pipe 2P3. 4. Please insure that where there is a change in pipe diameter, the soffit of smaller upstream pipe shall at least match the soffit of the larger pipe. 5. What is happening at the outlet of Pipe 5P4? What is the grading from roadway to drainage channel 2? 6. Provide protection from erosion on drainage channel over sanitary sewer line where cover is proposed at 2'. (S-1) 7. Provide cross-section of drainage channels. Do you have enough rip-rap at outfall to Channel No. 1 to reduce the velocity to acceptable range for seeded grass surface treatment? 8. The storm collection system will be considered private south of where street pavement ends. 9. Please confirm that the TXU gas line is not high pressure. If it is high pressure show approximate depth. (W-1) Reviewed by: Carol Cotter Date: September 19, 2006 STAFF REVIEW COMMENTS NO. 1 Project: CASTLEROCK PH.1A (FP) - 06-00500192 PLANNING 1. The construction documents and reports are still under review and may affect the plat. 2. Please include the entire Phase 1A in the vicinity map (Park Area). 3. Please identify all proposed utility easements on the plat. 4. Note 10 states that Common Areas will be maintained by HOA. How does this relate to Greenbelts and Buffer Areas? Reviewed by: Jennifer Reeves Date: September 11, 2006 ENGINEERING COMMENTS NO. 1 1. How does the approved CLOMR affect the floodplain in this area? Please show on Plat. 2. It appears that with this and future phases you will be point discharging storm water into the Conservation Easement. Please provide appropriate documentation that TxDOT and Texas Wildlife and Fisheries has approved this plan. 3. Submit TxDOT Driveway and Utility permits. 4. Off-site easements are required for utilities in this phase. Provide copy of blanket easement if this area is included with the blanket easement in Castlegate, or submit easement dedication sheet and required documents. 5. Subdivision is located in Sewer Impact Fee Area 97-01 (Spring Creek). Current impact fees in this area are $349.55/LUE and are due at time of building permit. Reviewed by: Carol Cotter Date: September 11, 2006 ELECTRICAL COMMENTS REQUIRING IMMEDIATE ATTENTION 1. Developer provides temporary blanket easement for construction purposes. 2. Developer provides easements for electric infrastructure as installed for electric lines (including street lights). 3. As per ongoing conversations with Civil Development, Ltd., additional easements will be required for electric infrastructure to be extended to this particular phase. GENERAL ELECTRICAL COMMENTS 1. Developer installs conduit per city specs and design. 2. City will provide drawings for conduit installation. 3. Developer provides 30' of rigid or IMC conduit for riser poles. City installs riser. 4. Developer to intercept existing conduit at designated transformers and extend as required. If conduit does not exist at designated transformer, developer to furnish and install conduit as shown on electrical layout. 5. Developer pours transformer pad(s) per city specs and design. NOTE: 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 have not been pointed out to the City,will constitute a completely new review. 2 6. Developer installs pull boxes & secondary pedestals as per city specs and design.(pull boxes & secondary pedestals provided by the city). 7. Developer provides digital AutoCAD 2000 or later version of plat and/or site plan email to bread(a cstx.gov . 8. Developer provides load data for project. To discuss any of the above electrical comments, please contact Brent Read at 979- 764-5026. Reviewed by: Brent Read Date: September 8, 2006 FIRE 1. No more than thirty(30) dwelling units on single access road. Reviewed by: Steve Smith Date: 09/06/06 Sanitation 1. Need to show a temporary turn-around at the south end of Rocky Creek Trail. Reviewed by: Wally Urrutia Date: September 8, 2006 NOTE: 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 have not been pointed out to the City,will constitute a completely new review. 3