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HomeMy WebLinkAboutSUB201700046 Plan - Other (not approved) 2019-09-25PROJECT MANAGEMENT SHIMCIVIL ENGINEERING LAND PLANNING ENGINEERINGo September 25th, 2019 John Anderson Albemarle County Department of Community Development Engineering Department Regarding: Chesterfield Landing Phase 2 — RP-201700046 Road As -Built Plan Submittal Dear Mr. Anderson, Please find attached the resubmittal package for the Road As -Built Plan for Chesterfield Landing Phase 2. Included are the following: Additional Contents: • Asbuilt Road Plan (6 copies) • As -Built Comment Response Letter • As -Built Narrative Letter • Engineer's Certification Letter • Material Test Reports (2 copies) • Copy of Recorded Plat • Pipe Inspection Video (2 copies) • Bond Inspection Request Form • Check for Fee ($269) If you have any questions please do not hesitate to contact me at michael@shimp-engineering.com or you may contact Justin Shimp at Justin@shimp-engineering.com or by phone at 434-227-5140. Best Rje4ard , Michael Chandler Shimp Engineering, P.C. PROJECT MANAGEMENT SHIMCIVIL ENGINEERING LAND PLANNING September 25th, 2019 Mr. John Anderson Albemarle County Department of Community Development Engineering Department Regarding: Chesterfield Landing Phase 2 — As -Built Narrative Letter Dear Mr. Anderson, The following narrative describes how the items from the Bond Inspection Request Checklist have been met on site to meet county bond inspection request requirements. It will further outline any deficiencies and proposed solutions. a. Horizontal Alignment — The as -built plan includes both the as -built and design centerlines. b. Vertical Alignment — The road profiles include both the as -built and design elevations. c. Edge of Pavement — The as -built edge of pavement has been shown over the design. d. Culverts, Pipes and Drainage Structures — All drainage pipes and structures have been shown in their as -built locations over the design. e. Ditch Lines — All ditch lines have been shown in their as -built locations. f. Drainage Easements — All drainage easements have been shown on the plan. g. Guardrail — No guard rails are proposed on the plan. h. Right of way and associated easements — All fight -of -ways and easements have been shown with deed book and page references. i. Pavement Designs — The as -built pavement design was calculated and the summary has been include on Sheet C10 of the as -built plans. j. Street Trees — All street trees are shown in their as -built locations. k. Signs — All signs are shown in their as -built locations. A copy of the As -Built Plan has been included with this submittal to demonstrate compliance with the approved plans as mentioned above. If you have any questions please do not hesitate to contact me at michael@shimp- engineering.com or by phone at 434-227-5140. Best Regards, Michael Chandler Shimp Engineering, P.C, PROJECT MANAGEMENT SHIMCIVIL ENGINEERING LAND PLANNING ENGINEERING September 25th, 2019 Mr. John Anderson Albemarle County Department of Community Development Engineering Department Regarding: Chesterfield Landing Phase 2 — As -Built Certification Letter Dear Mr. Anderson, I have reviewed surveys and inspections on the Oxbow Dr. roadway in the Chesterfield Landing Phase 2 subdivision. Based on these, I can confirm that the roadways were installed in accordance with the approved plans for the project, except as noted. Specifically we have surveyed the following: The roadway centerlines and elevations are in accordance with the approved plans. The length and diameter of the storm pipes installed are in accordance with the approved plans. Elevations of the inverts of the storm system are in accordance with the approved plans. We believe that a partial reduction in the bond amount is warranted based upon completed work. The overall installation of the improvements was performed in accordance with the approved plans. A copy of the As -Built Plan has been included with this submittal to demonstrate compliance with the approved plans as mentioned above. If you have any questions please do not hesitate to contact me at justin@shimp- engineering.com or by phone at 434-227-5140. PAI�L 0 rL JUST ` M. SHIMp y L.� o- 45183 �0 9 Zs�l°� tiff a ` oNnL E ,. Best Regards, Justin Shimp, P.E, Shimp Engineering, P.C. PROJECT MANAGEMENT SHIMCIVIL ENGINEERING LAND PLANNING ENGINEERING_; <r� September 25th, 2019 Mr. John Anderson Albemarle County Department of Community Development Engineering Department Regarding: Chesterfield Landing Phase 2 — As -Built Road Plan Comment Response Dear Mr. Anderson, Thank you for your review of the As -Built Road Plan for Chesterfield Landing Phase 2. We have revised our plan per your most recent comments dated 4/24/2019. Please see below for a detailed response to each comment. Bond reduction request comments 1. Number or location or detail of. - a) CBR tests performed b) Stone base inspection c) Pavement inspection d) Pavement roller pattern e) Pavement material f) Pavement depth g) Pavement Design (As -Built) h) Concrete tests i) Concrete reports (date, time, temp, air, slump) j) Pipe video are insufficient to reduce subdivision bond at this time. 2. While Oxbow Drive is limited fill section roadway (Sta. 24+00 — 25+00), ASTM D-6938 test performed 3/5/18 showed insufficient compaction. While test repeated 3/6/18 showed compaction met 95% of Max. dry density std, there is no other description or information on number of lifts, equipment used, or remedial steps taken to address 3/5/18 failure. See F&R report dated 3/18/18. 3. There is a single ASTM-6938 test for 100-ft fill section. See F&R report dated 3/18/18, 3 performed. 4. There is a single reference to stone base depth. See F&R report dated 3/18118, under "tests performed". 5. There is no record of pavement pattern, equipment, date, time, temp, or number of days paving occurred. F&R was not on site. 6. There is no record of concrete placement (concrete mix: air, slump, temp), or of compressive strength. See report dated 11/6/18. 7. There is no apparent visual record of asphalt or concrete placement F&R not on site during placement. 8. No pipe inspection video was submitted with bond reduction request. The pipe video inspection has been performed and the video is included with this submittal. 9. A PE -certification did not accompany subdivision bond inspection request. The PE -certification has been included with this submittal. 10. Copies of recorded easements did not accompany bond inspection request. Copies of the recorded easements have been included with this submittal. 11. An asphalt core sample report indicates less than design depth of base asphalt at two locations (ref. ietm 16) Acknowledged. 12. Stone depth was not evaluated when base asphalt depth was cored. See F&R report dated 3/18/18. 13. What is apparent: a) There was slight observations, testing, reporting of roadway construction. b) Lots, sanitary, storm and water utility line work were focus of detailed inspection reports. c) Weather was unfavorable for significant periods of time while roadway Oxbow Drive, Phase 2 was under construction. d) Two reports for Oxbow Dr., Sta. 1+22 — 20+00, Sta. 20+00 — 22+00 show `no pumping or rutting.' No proof -roll observations were submitted for Oxbow Dr., Sta. 22+00 — 26+50 (450'). 19. Albemarle County Requests a. Road subgrade, base and pavement construction photos, reports, observations, material or performance test reports that may not have been submitted (dates, weather, equipment used, etc.) All available test reports and records have been provided. See F&R report dated 3/18/18. b. Representative information for each required bond inspection checklist item, at reasonable station intervals, for entire phase 2 length of Oxbow drive that shows construction meets design. Representative information for each bond inspection checklist item is described in the provided As -built Narrative Letter, included with this submittal. c, CBRs based on testing every 300' of a linear roadway facility. All available CBR test reports have been provided. 20. Albemarle Requires: a. Detailed observations and descriptions to accompany PE certification that improvements are built to plan. The PE Certification letter is provided and accompanies detailed descriptions of each item in the As -Built Narrative. b. PE certification that improvements are built to plan. A PE Certification letter has been provided with this submittal. c. Pipe interior inspection reports and video The pipe interior inspection video has been provided with this submittal. d. Concrete test reports using cylinders obtained during construction. Because cylinder were not taken during construction, NDT tests were performed. The results of the NDT tests have been provided. See field report dated 11/06/2018. e. Non-invasive concrete test values for representative sections of concrete curbing, aprons, etc absent testes performed on samples obtained during construction. The results of the NDT tests have been provided. See field report dated 11/06/2018. A narrative letter that outlines how materials included with bond inspection request packet submittal meet county bond inspection request/bond reduction requirements. Narrative should outline deficiencies, propose remedy. An As -Built Narrative letter has been provided, outlining the bond inspection request items and any deficiencies as well as proposed remedies. 21. As -built drawing: a. Provide match line references (include sheet numbers) Match lines have been provided with associated sheet numbers. b. Include As -built pavement design based on base mix asphalt depth <3.00", CBR value, 8.8. As -built pavement design has been provided on Sheet C10. Revise Storm Drain As -built profile labels (slope, length, inv. Elev.) so readable. Engineering is not able to evaluate as -built storm drain profile. The storm sewer as -built profile labels have been revised to be more legible. Label phase 1 and phase 2 lines Phase 1 and 2 lines have been provided and labeled. e. Note reading: Only base layer asphalt installed at time of survey. It is unclear why this base asphalt elevation was not surveyed directly. Base asphalt elevations have been provided. This note has been removed. f. C7: show full extent of STM Str. D4 — D1. The full extent of STM stir. D4-D1 has been shown on Sheet C7. If you have any questions please do not hesitate to contact me at michael@shimp-engineering.com or you may contact Justin Shimp at Justin@shimp-engineering.com or by phone at 434-227-5140. Best Regards, Michael Chandler Shimp Engineering, P.C.