| Date |
Text |
| 2021-06-09 07:15:22 | THE FOLLOWING COMMENTS ARE FROM THE REVIEW OF THE |
| | 5/18/2021 SUBMITTAL: |
| | |
| | 1. [NOT SATISFIED] ON THE DRAINAGE PLAN, PROVIDE PIPE |
| | SIZES AND PIPE MATERIAL FOR EXISTING STORM PIPES, SEWER |
| | MAINS, FORCE MAINS AND WATER MAINS. {ADDITIONAL |
| | COMMENT: NOT ALL EXISTING UTILITIES ARE LABELED |
| | INCLUDING WITHIN THE EXECUTIVE CENTER DRIVE R/W.] |
| | |
| | 2. [NOT SATISFIED] CHECK PIPE COVER FOR PIPES WITHIN |
| | THE PROPOSED DRY DETENTION AREAS. [ADDITIONAL COMMENTS: |
| | FOR EXAMPLE, THE SANITARY SEWER PIPE LEAVING PROPOSED |
| | SEWER MANHOLE NUMBER 1 WILL HAVE A TOP OF PIPE |
| | ELEVATION AROUND 12.4 FT NAVD AND THE CONFLICT MANHOLE |
| | TO THE EAST WILL BE CONVERTED TO A CATCH BASIN WITH |
| | PROPOSED GRATE ELEVATION OF 13.00 FT NAVD WITHIN THE |
| | PROPOSED DETENTION AREA. FOR ANOTHER EXAMPLE, THE |
| | PROPOSED BOTTOM ELEVATION OF THE DETENTION AREA IS |
| | 10.50 FT NAVD. THE EXISTING CATCH BASIN TO THE |
| | SOUTHWEST OF THE G-G SECTION LABEL ON SHEET C402.0 WILL |
| | BE MODIFIED TO HAVE A GRATE ELEVATION OF 12.50 FT NAVD. |
| | THE INVERT ELEVATION OF THE SOUTH PIPE IS 9.41 FT NAVD. |
| | ASSUMING THE PIPE IS 12? IN DIAMETER, THE TOP OF PIPE |
| | ELEVATION WILL BE 10.5?+/- NAVD, THE SAME ELEVATION AS |
| | THE BOTTOM OF THE PROPOSED DETENTION AREA.] |
| | |
| | 3. [PARTIALLY SATISFIED] REVIEW GRATE ELEVATION OF |
| | 14.80 FT NAVD FOR CATCH BASIN LOCATED IN NORTH |
| | DRIVEWAY. DRIVEWAY CROSS SLOPE WOULD BE AROUND 3.5% AND |
| | LONGITUDINAL SLOPE AROUND 2%. CONSIDER FLUME INTO THE |
| | DRY DETENTION AREA INSTEAD OF THIS CATCH BASIN. SHEET |
| | C401.0 LISTS THE RIM ELEVATION AS 14.80 FT NAVD AND |
| | SHEET C402.0 PROVIDES A PROPOSED SPOT GRADE OF 15.05 FT |
| | NAVD AT THE CATCH BASIN. |
| | |
| | 4. [SATISFIED] THE STORM PIPE FROM BEST BUY IS SHOWN AS |
| | A SANITARY PIPE AND MAY NOT BE SHOWN IN THE CORRECT |
| | LOCATION. THE PIPE FROM THE SOUTHEAST CORNER OF BEST |
| | BUY IS LIKELY IN THE 12 FT DRAINAGE EASEMENT AND EITHER |
| | CONNECTS TO THE MANHOLE IN THE DRIVEWAY OR CONTINUES |
| | EAST TO THE DITCH ON THE OTHER SIDE OF EXECUTIVE CENTER |
| | DRIVE. PLEASE VERIFY. |
| | |
| | 5. [SATISFIED] THE STORM PIPE FROM THE CENTER OF |
| | EXECUTIVE CENTER DRIVE CONNECTS TO THE MANHOLE IN THE |
| | NORTH DRIVEWAY INSTEAD OF THE OFFSITE CATCH BASIN. |
| | |
| | 6. [REVISED COMMENT] PLEASE EXPLAIN THE PURPOSE OF THE |
| | WEIR IN THE PROPOSED CONTROL STRUCTURE IF THE ELEVATED |
| | CATCH BASINS IN THE PROPOSED DETENTION AREA ARE |
| | DESIGNED TO PROVIDE THE PRE-TREATMENT STORAGE VOLUME. |
| | ALSO EXPLAIN HOW THE DETENTION AREAS WILL PROVIDE |
| | TREATMENT WITH AN PVC LINER. |
| | |
| | 7. [PARTIALLY SATISFIED] PROVIDE CROSS SECTION OF ROAD |
| | WIDENING (RIGHT TURN LANE). [ADDITIONAL COMMENT: |
| | PROVIDE RANGE OF PAVEMENT CROSS SLOPE ON THE CROSS |
| | SECTION.] |
| | |
| | 8. [PARTIALLY SATISFIED] PROVIDE SPOT GRADES FOR NEW |
| | RIGHT TURN LANE AND AT DRIVEWAYS. {ADDITIONAL COMMENT: |
| | PROV IDE ADDITIONAL GRADING FOR SIDEWALK AND DRIVEWAY |
| | APRON TO SHOW HOW BACK OF SIDEWALK ELEVATION OF 15.85 |
| | FT NAVD AT THE DRIVEWAY WILL CONNECT TO THE EXISTING EP |
| | ELEVATION OF 14.12 FT NAVD IN THE STREET.] |
| | |
| | |
| | 9. [SATISFIED] DRY DETENTION AREA IS NOT DEPICTED ON |
| | THE WATER MAIN PROFILE OR FORCE MAIN PROFILE ON SHEET |
| | C503.0. |
| | |
| | 10. [SATISFIED] 6? WATER MAIN TO THE FIRE HYDRANT |
| | LABELED AS 10? WATER MAIN ON THE FORCE MAIN PROFILE. |
| | |
| | 11. [PARTIALLY SATISFIED] PROVIDE VERTICAL DATUM |
| | CONVERSION EQUATION ON THE SURVEY. [ADDITIONAL COMMENT: |
| | NAVD TO NGVD CONVERSION IS LISTED AS +1.555 FEET ON THE |
| | SURVEY AND +1.532 FEET ON THE CIVIL ENGINEERING PLANS.] |
| | ADDITIONAL COMMENTS: |
| | 12. PROVIDE INLET PROTECTION FOR ALL CATCH BASINS AND |
| | INLETS ON EXECUTIVE CENTER DRIVE ALONG THE FRONTAGE OF |
| | THE PROJECT AND IMMEDIATELY NORTH AND SOUTH OF THE |
| | PROJECT. [CAN BE ADDRESSED DURING ENGINEERING PERMIT |
| | SUBMITTAL] |
| | |
| | 13. SILT FENCE WILL BE NEEDED ALONG THE WEST PROPERTY |
| | LINE. [CAN BE ADDRESSED DURING ENGINEERING PERMIT |
| | SUBMITTAL] |
| | |
| | 14. CHECK THE CHANGE IN SPREAD OF RUNOFF AT THE SOUTH |
| | END OF THE PROPOSED RIGHT TURN LANE AT THE PT OF THE |
| | CURB AND GUTTER (I.E. AT THE EDGE OF TRAVEL LANE SOUTH |
| | OF THE DRIVEWAY). [CAN BE ADDRESSED DURING ENGINEERING |
| | PERMIT SUBMITTAL). |
| | |
| | TRACY WARD, P.E. |
| | SENIOR STORMWATER ENGINEER |
| | ENGINEERING SERVICES DEPARTMENT |
| | [email protected] |
| | 561-494-1120 (O) |
| | 561-351-0510 (M) |
| | |
| |
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