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HomeMy WebLinkAboutComment Responses 690 S. Industry Way, Suite 10- Meridian, Idaho 83642 – Phone (208) 275-8704 – Fax (208) 342-5353 July 30, 2021 City of Caldwell Engineering Department T.J. Frans 621 Cleveland Blvd, Caldwell, ID 83605 RE: Sterling Ridge Subdivision – Revised Preliminary Plat Dear Mr. Frans, This letter is to provide clarification on comments previously received as well as to explain revisions to the subject project. Responses and clarifications are as follows: Sheet PP1 1. This entrance should be the same as R-810E, only widened evenly from the centerline for as wide as you want the landscape island to be. Acknowledged. 2. Bring vertical curb off Joplin and into Parapet. Transition to rolled curb on Parapet right before the Parapet TBCPC at Over Hang St. The vertical curb off of Joplin has been continued to the TBCPC at Overhang St. 3. Use vertical. curb around landscape island. The use of vertical curb around landscape island is not necessary as the road will have a crown down the centerline. The flow of water will be directed elsewhere. The curb around the island will be Extruded Curb otherwise known as vertical curb with no gutter per ISPWC SD-701A. 4. Provide width of proposed island. The 10’ TBC-TBC proposed island has been properly dimensioned on the street section. 5. Change to show dimension from TBC-TBC, both sides of the island. TBC-TBC dimension is now shown. Sheet PP2 1. Provide 56' of r/w for Marble Front. Clarification 7-30-21: We are proposing that the ROW width for Marble Front Road be the same as a city local road which is 53-feet. Per CHD4 we are proposing to widen the existing gravel road from one lane to a two lane gravel road that is 30-feet wide along the frontage of the project. 2. Property lines do not match County records. Revise to match. The property lines are in accordance with the current boundary line adjustment. 3. CHD4 has a 1916 deed for r/w for Ware Road. Please review with CHD4 and provide written documentation that CHD4 is okay with you designing lots to the centerline of an existing roadway. If approved by CHD4, you will need to complete the vacation process PRIOR to this pre-plat being heard by any City hearing bodies. Clarification 7-30-21: The lots have been to 26.5-feet from the CL of Ware Road to provide ½ of the standard city street ROW. Furthermore, an additional common lot 690 S. Industry Way, Suite 10- Meridian, Idaho 83642 – Phone (208) 275-8704 – Fax (208) 342-5353 buffer is provided in accordance with city code for double fronting lots. Standard improvements for a local road section are shown. 4. Show clear accommodation for the relocation of the 100 Lateral through the property. Cannot be located within the public r/w. Clarification 7-30-21: The 100-Lateral is going to be moved south and piped as part of the Mandalay Ranch Subdivision. The 100-Lateral will be extended on that same alignment westerly as part of the Sterling Ridge construction. This approach is desired by the Pioneer Irrigation District. 5. Provide and show access from the out parcels fronting Marble Front Road to the interior roadway system of this development. Clarification 7-30-21: The out parcels are served by Marble Front Road as verified by CHD4, and Marble Front Road is being widened to improve access to these parcels as part of this project.. Therefore, additional accesses are not proposed. An access is provided to the far northeasterly parcel to the subdivision. 6. The entrance on this sheet doesn't match the following sheet (doesn't show the landscape island). Revise to match. The landscaped island will need to be it's own lot common lot owned and maintained by the HOA. The landscape island has been revised. 7. Align access point with the already approved access point of Mandalay Ranch. Access point along Joplin now aligns with Mandalay Ranch Subdivision. 8. Contact Six Mile Engineering to obtain the preliminary design and r/w plans for this RAB and overlay it onto this drawing. Staff must be able to verify that the layout of the lots will not have to be modified by the RAB design. Six Mile Engineering’s RAB design has been overlayed into the preplat drawing. Additional Clarification: The westerly entry to Joplin has been revised to the location of Ware Road. Sheet PP3 1. All PI is required to be constructed within the roadway. See the City Engineering Dept. Webpage for a copy of the CMID specs. Follow T-308 for roadway location PI has been relocated to the street per T-308. 2. Where does the FM discharge? The force main is to discharge into the nearest gravity sewer manhole near the entry to Mandalay Ranch Subdivision. This location is dependent upon the progress of the subdivision to the south, Mandalay Ranch Subdivision. Ideally, this subdivision will be complete with the phase directly south of Joplin, however the force main may need to be piped to the nearest manhole in Middleton Road. 690 S. Industry Way, Suite 10- Meridian, Idaho 83642 – Phone (208) 275-8704 – Fax (208) 342-5353 3. Show the PI mainline throughout the development and the location of the proposed Pressure Irrigation Pump station. Follow standard drawing T-308 for utilty locations The pressure irrigation pump station is located in Block 10 lot 2 and a note has been added to the general notes on sheet PP2. 4. All sewer mainlines shall be designed to be on centerline of all roadways. Revise utility layout prior to next submission. Follow standard drawing T-308 All sewer mainlines have been relocated to follow the centerline of all roadways per T- 308. 5. There is no existing sewer in Middleton Road. You can complete a public records request on-line to get a copy of Mandalay Ranch overall site utility plan. Clarification 7-30-21: The force main is proposed to discharge into the nearest gravity sewer manhole at the entry to Mandalay Ranch Subdivision. This location is dependent upon the progress of the subdivision to the south, Mandalay Ranch Subdivision. 6. The Joplin 12" mainline needs to tie into the Middleton Road 12" mainline. Mandalay Ranch is required to extend their 12" water main down Middleton Road to the intersection. If Sterling Ridge starts before Mandalay has extended this line to the intersection it will be the responsibility of Sterling to ridge to extend the line from wherever in Middleton Road it's located at that time through the Sterling Ridge north boundary. Comment noted. 7. Once you've overlaid and shown the proposed RAB please relocate the GIRR line to be located outside of the r/w through the corner. GIRR lines can't be located within any public r/w (interior, Joplin, Middleton, Ware, RAB). The gravity irrigation line has been relocated. 8. Avoid the crossover of utilities around corners like the water and sewer are doing here. Keep the water one side, the PI and storm drain on the other. Typical for all corners Crossover utilities have been avoided where possible. 9. Show the extension of a 12" domestic water mainline along the Middleton Road frontage. Per T-308, the water main corridor falls outside of the site’s boundary line. The developer is aware that they may be required to contribute to the waterline extension. 10. Do the arrows next to the water mainline show the sewer mainline flow direction? If so, please move the arrows so they're beside the sewer mainline. Changing the sewer line style to include arrow may work too. The arrows depict the proposed finished grade slope direction. The arrow has been added to the legend to be clearer. 690 S. Industry Way, Suite 10- Meridian, Idaho 83642 – Phone (208) 275-8704 – Fax (208) 342-5353 11. Keep front and rear lot line easements. Remove all interior lot line easements. Typical for all lots. Rear and front lot line easements are shown and all interior lot line easements have been removed. Thank you for your time in reviewing this project. If you have any questions or additional comments please feel free to contact me. Sincerely, Ryan C Young, PE Land Development Project Engineer Enc.