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Subdivision Review Comments
All Subdivision Review Comments for Case # 17CP0047




For VDOT’s comments please contact Virginia Department of Transportation at (804) 674-2814 or send e-mail to Boris.Solomonov@VDOT.Virginia.gov

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CASE NO: 17CP0047 STATUS: PENDING APPROVAL
PROJECT NAME: AMBERLEIGH SEC 4 - LAST INTERNET UPDATE: 11/22/17
SUBMITTAL TYPE: CONSTRUCTION PLAN
DEPARTMENT...REV..ROUTED..RESPONSE..STATUS....DATE...RVW..PHONE
ENVIR.ENGR.-: 02 08/30/17 09/21/17 ******** 10/28/16 ASM 717-6711
FIRE DEPT.--: 02 08/30/17 09/21/17 AMENDED* 09/19/17 JKL 748-1489
PLANNING----: 02 08/30/17 09/21/17 AMENDED* 09/28/17 BSM 717-6143
TRANSPORT.--: 02 08/30/17 09/21/17 COMPLETE 09/07/17 SES 751-4912
UTIL.PLAN.--: 02 08/30/17 09/21/17 ******** ********
UTILITIES---: 02 08/30/17 09/21/17 AMENDED* 09/19/17 A B 768-7450
UTIL.R.O.W.-: 02 08/30/17 09/21/17 ******** ********
VDOT--------: 02 08/30/17 09/21/17 ******** ********
REVIEW DEPARTMENT: UTILITIES DEPARTMENT
REVIEWER/PHONE # : ANDREW BARNES / 804-748-1338
NAME OF PLAN : AMBERLEIGH SECTION 4
ADDRESS : 9628 LADINO LN/ CLOVER HILL
SUBMISSION DATE : 09/26/16
PLAN DATED : 09/07/16
REVIEW DATE : 10/05/16
SITE PLAN NO. : 17CP0047
COMMENTS : 1ST REVIEW-NOT APPROVED
TABLE REVIEW : NO
PLAT PROCESS :
1. UTILITIES PROJECT NUMBER 16-0257 SHALL BE PLACED ON
THE LOWER RIGHT CORNER OF EACH SHEET
2. PLEASE PUT UTILITIES CONTACT ANDREW BARNES, 768-
7450, BARNESAND@CHESTERFIELD.GOV ON THE COVER SHEET.
3. A COPY OF VIRGINIA DEPARTMENT OF TRANSPORTATION'S
APPROVAL LETTER REGARDING PAVEMENT REPLACEMENT, METHOD
OF CROSSING, AND ALIGNMENT OF UTILITY WITH STATE RIGHT
OF WAY, AND A COPY OF ENVIRONMENTAL ENGINEERING'S
INITIAL REVIEW LETTER MUST BE SUBMITTED BEFORE REVISED
PLANS ARE SUBMITTED FOR RE-REVIEW.
4. PRIOR TO RELEASING TO THE CONSTRUCTION SECTION, A COPY
OF THE ENVIRONMENTAL ENGINEERING APPROVAL LETTER AND/OR ALL
OTHER APPLICABLE LOCAL STATE AND FEDERAL AGENCIES' APPROVAL
LETTERS MUST BE RECEIVED BY THIS DEPARTMENT. IN ADDITION,
ALL EASEMENTS NOT INCLUDED WITH THE SUBDIVISION PLAT MUST
BE DEDICATED WITH A SEPARATE PLAT AND AGREEMENT TO THE
COUNTY PRIOR TO RELEASING THE PROJECT TO THE CONSTRUCTION
SECTION.
5. PLEASE IDENTIFY WHETHER IRRIGATION WILL BE PROVIDED
AND IF SO, PROVIDE AN IRRIGATION METER SIZING FORM AND
SPECIFY INSTALLATION DETAILS ON THE PLAN.
6. WILL STREET LIGHTING AND/OR LANDSCAPING BE PROVIDED
WITH THIS SECTION AS THEY WERE WITH THE PREVIOUS SECTIONS?
IF SO, PLEASE SUBMIT A LANDSCAPING/LIGHTING PLAN SO THAT
SUFFICIENT HORIZONTAL CLEARANCES WITH LATERALS AND METERS
CAN BE IDENTIFIED.
7. AMEND NOTE 22 (STANDARD NOTES) ON THE COVER TO INDICATE
AN ELEVATION OF 174'.
8. STANDARD NOTE #19 ON THE COVER NEEDS TO BE REVISED TO
INDICATE "UPGRADE" MANHOLE, INSTEAD OF "DOWNGRADE".
9. REVISE NOTE 15 (STANDARD NOTES) ON THE COVER TO
INDICATE 2% MOISTURE CONTENT, NOT 20%.
10. THE SOURCE OF THE SITE SURVEY AND RELEVANT COORDINA
TE SYSTEMS COULD NOT BE LOCATED ON THE PLANS.
11. A BENCHMARK COULD NOT BE LOCATED ON THE PLANS.
12. NOTE 6 (STANDARD NOTES) ON THE COVER SHOULD BE
REMOVED. THE CONTRACTOR WILL CONSTRUCT THE PROJECT IN
ACCORDANCE WITH THE MATERIALS SPECIFIED IN THE APPROVED
PLANS.
13. SANITARY SPURS OUTSIDE THE ROW MUST BE PRIVATE. SEE
AMBERLEIGH SECTIONS 2 & 3 AND VILLAS AT DOGWOOD SEC. C FOR
REFERENCE. PROVIDE NOTES, DETAILS, AND PHYSICAL
ARRANGEMENTS SIMILAR TO THOSE PROVIDED WITH THE VILLAS AT
DOGWOOD SECTION C (CPN: 2005-0016). PROVIDE AND INDICATE
PRIVATE ACCESS/UTILITY EASEMENTS AS NECESSARY.
14. A SANITARY SEWER AND WATER CONNECTION AGREEMENT AND
PRIVATE SANITARY SEWER AND EASEMENTS AGREEMENT WILL NEED TO
BE PREPARED, EXECUTED, AND RECORDED FOR LOTS 4-28, 34-38, &
41. THESE DOCUMENTS WILL BE PREPARED BY THE COUNTY RIGHT-
OF-WAY OFFICE. PLEASE CONTACT MR. DEAN SASEK, ASSISTANT
REAL PROPERTY MANAGER, AT 804-748-7128 FOR ADDITIONAL
DETAILS REGARDING THESE PROCEDURES.
15. VERIFY THAT THE PROPOSED SANITARY LATERALS, ROOF
DRAINS, DOMESTIC WATER SERVICE, AND FIRE LINE SERVICES WILL
FIT WITHIN THE PRIVATE ACCESS/UTILITY EASEMENTS
16. SUBMIT RESTRAINED JOINT CALCULATIONS FOR THE PROJECT
WITH THE NEXT SUBMITTAL. TEST PRESSURE SHOULD BE 150 PSI,
WITH A SAFETY FACTOR OF 1.5:1.
17. CLEARLY LABEL THE COLONIAL GAS RIGHT-OF-WAY ON SHEET
4.
18. MOVE PROPOSED SANITARY MANHOLE #5, PROPOSED FIRE
HYDRANT, 22.5D BEND, AND THE 8"X8" TEE AND VALVES AT OR
AROUND STA. 13+25 OF AMBERGROVE AVENUE OUTSIDE
THE GAS LINE ROW.
19. LABEL THE PROPOSED ROW LINE.
20. LABEL AMBERGROVE AVENUE AND THE EXISTING STREETS
ON SHEET 4.
21. THE ROAD SECTION DETAIL FOR AMBERGROVE AVENUE ON SHEET
19 DO NOT MATCH THE ROAD PLAN SHEETS.
22. WHERE LATERALS OR METERS TERMINATE IN OPEN SPACE, AN
EASEMENT SERVING THE INTENDED LOT WILL BE REQUIRED.
23. IDENTIFY A TYPICAL (TYP) WATER CONNECTION AND SEWER
LATERAL ON EACH PLAN SHEET AND INCLUDE SIZE.
24. EVALUATE FINISHED FLOOR ELEVATIONS RELATIVE TO THE TOP
OF THE NEAREST UPGRADE MANHOLE. AS THE FINISHED FLOOR
ELEVATION OF LOT 2 MAY BE BENEATH THE TOP ELEVATION OF THE
MH 20, PROVIDE A NOTATION THAT A BACKWATER VALVE MAY BE
REQUIRED.
25. IDENTIFY THE PROPOSED SANITARY STUB FROM PROPOSED
MANHOLE 3.
26. PROVIDE ADDITIONAL EASEMENT JUST DOWNSTREAM OF
SANITARY MH1 SO AS TO PROVIDE A MINIMUM 8' WIDTH ON THE
DOWNHILL SIDE OF THE PROPOSED PIPE.
27. RECOMMEND SUPPRESSING THE ALIGNMENT STATION LABELS FOR
THE SANITARY LATERAL SPURS WITHIN THE ROW OR CHANGING THEIR
ORIENTATION RELATIVE TO THE ROAD ALIGNMENT LABELS.
28. PROVIDE A TERMINAL MANHOLE OUTSIDE OF THE ROW FOR THE
STUB OFF MH 18 AND PROVIDE A PROFILE.
29. CAN MH 1 BE SHIFTED TO THE EAST SO AS TO BE LOCATED
OUTSIDE THE PROPOSED RIPRAP?
30. PROVIDE A NOTE (IN PLAN, PROFILE, AND DEMOLITION PLAN)
INDICATING THAT THE EXISTING FIRE HYDRANT AT APPROXIMATE
STA. 1+00 OF AMBERDALE DRIVE WILL BE REMOVED AND RELOCATED
TO THE PROPOSED LOCATION.
31. CALL OUT 8"X6" HYDRANT TEES AND 6" VALVES AT ALL
PROPOSED FIRE HYDRANTS. THE VALVES NEED TO BE SHOWN ON THE
PLAN AND BOTH SHOULD BE INCLUDED IN THE MATERIAL
QUANTITY LIST.
32. PROVIDE AN ADDITIONAL MAIN LINE VALVE AT APPROX. STA.
17+25 (NORTH OF THE PROPOSED HYDRANT) OF AMBERGROVE AVENUE.
THE MAXIMUM DISTANCE BETWEEN MAIN LINE VALVES MUST NOT
EXCEED 1000 FEET.
33. INDICATE AND DISPLAY A TAPPING SLEEVE AND VALVE FOR
THE WATERLINE CONNECTION WITH AMBERLEIGH CIRCLE AT STA.
10+00 OF AMBERGROVE AVENUE. IT DOES NOT APPEAR THAT A
STUB-OUT WAS PROVIDED WITH SECTION 1 OR 3.
34. INDICATE THE EXISTING VALVE THAT WILL BE ISOLATED TO
FACILITATE THE WATERLINE TIE-IN IN AMBERDALE DRIVE.
35. IDENTIFY THE PROPOSED WATER LINE MATERIAL IN PLAN
VIEW.
36. THE WATER LINE STUB AT STA. 8+36 OF AMBERDALE DRIVE
SHOULD EXTEND A FULL PIPE LENGTH PAST THE EDGE OF PAVEMENT.
37. FOR LOTS COVERED BY THE IFC MODIFICATION REQUEST,
APPROVED 04/26/11, THE PROPER WATER METER DETAIL (FIR-1B)
WILL NEED TO BE REFERENCED AND INCLUDED IN THE PLANS.
38. PROVIDE AN INSET DETAIL FOR THE TYPICAL ARRANGEMENT OF
THE DOMESTIC AND FIRE LINES FOR LOTS AFFECTED BY THE IFC
MODIFICATION.
39. PLEASE DISPLAY THE EXTENTS OF THE COLONIAL GAS ROW
IN PROFILE VIEW FOR AMBERGROVE AVENUE.
40. INDICATE THE FIELD-LOCATED POSITIONS OF THE 8" AND 14"
GAS LINES IN PROFILE VIEW FOR AMBERGROVE AVENUE. PROVIDE A
NOTE INDICATING THE SOURCE OF THE SURVEY.
41. LABEL EXISTING PROJECTS IN PROFILE VIEW AT TIE-INS FOR
WATER AND SEWER.
42. 2.5' OF COVER IS PROVIDED AT STA. 6+00 OF THE SANITARY
SEWER (E3 - MH6). EITHER REVISE THE FINISHED GRADE TO
PROVIDE A MINIMUM OF 3.5' OF COVER, OR PROVIDE DUCTILE IRON
PIPE BETWEEN MH2 AND MH3.
43. CONFIRM ASBUILT DATA FOR SANITARY MANHOLE E3 -- DESIGN
DOCUMENTS INDICATE AN INVERT OUT OF 174.2. THE INVERT MUST
BE FIELD VERIFIED.
44. MANHOLES NOT LOCATED IN AREAS NORMALLY MAINTAINED BY
PROPERTY OWNERS (MH 1, MH 2, MH 3, AND MH 4) SHOULD HAVE
TOPS SET 12" ABOVE THE SURROUNDING GRADE.
45. PROVIDE CLAY DAMS ON EITHER SIDE OF THE RIP RAP
BETWEEN MH E3 AND MH 2. LABEL AND DEPICT THE CLAY DAMS IN
PLAN AND PROFILE.
46. INCLUDE A NOTE ON THE PROFILE SHEETS SPECIFYING THAT
LATERALS TIED INTO MANHOLES SHALL HAVE THE PIPE CROWN
ELEVATIONS MATCHED TO THE MAIN LINE.
47. SINCE SANITARY MH5 AND MH14 ARE NOT EXCESSIVELY DEEP,
BRING THE INVERT-IN DOWN TO THE BOTTOM OF THE MANHOLE TO
ELIMINATE THE DROP CONNECTION.
48. THE 8"X8" TEE AND 2-8" VALVES AT AMBERGROVE AVENUE,
STA. 13+05, ARE NOT INDICATED IN PROFILE VIEW.
49. INDICATE RESTRAINED JOINTS FOR DUCTILE IRON PIPE IN
FILL.
50. PROVIDE VERTICAL BENDS AND RESTRAINED MECHANICAL
JOINTS FOR THE WATERLINE AT STA. 14+25 OF AMBERGROVE
AVENUE. VERIFY COMPLIANCE WITH WAT-11 FOR THE VERTICAL
DEFLECTION LOCATED AT STA. 16+50, AND PROVIDED RESTRAINED
VERTICAL BENDS IF NECESSARY.
51. TERMINATE THE 8" WATERLINE STUB FOR THE FUTURE COMMERCIA
T WITH AN 8"PLUG AND 2" FLUSHING HYDRANT.
52. AS A RESULT OF ANY CHANGES TO THE PROPOSED UTILITIES
RESULTING FROM THESE COMMENTS, PLEASE UPDATE THE MATERIAL
QUANTITIES ON THE COVER SHEET ACCORDINGLY.
BID PROPOSAL SHALL BE REVISED ACCORDINGLY AND A REVISED
UTILITIES CONTRACT MAY BE NECESSARY.
54. AFTER FINAL SITE PLAN APPROVAL, SUBMIT THREE SETS OF
THE APPROVED PLANS DIRECTLY TO THE UTILITIES DEPARTMENT FOR
OUR USE DURING CONSTRUCTION INSPECTION. THIS IS IN
ADDITION TO THE ONE APPROVED SET FROM PLANNING (4 TOTAL
SETS). ONE ADDITIONAL ROLLED SET WILL BE REQUESTED AFTER
THE PROJECT IS RELEASED TO CONSTRUCTION TO BE USED FOR AS-
BUILTS.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
REVIEW DEPARTMENT: UTILITIES DEPARTMENT
REVIEWER/PHONE # : ANDREW BARNES / 804-748-1338
NAME OF PLAN : AMBERLEIGH SECTION 4
ADDRESS : 9628 LADINO LN/ CLOVER HILL
SUBMISSION DATE : 02/16/17
PLAN DATED : 02/14/17
REVIEW DATE : 03/08/17
SITE PLAN NO. : 17CP0047
COMMENTS : 2ND REVIEW-NOT APPROVED
TABLE REVIEW : NO
PLAT PROCESS :
1. THE TOP OF SANITARY MH 1 SHOULD BE SET 1-FOOT ABOVE THE
SURROUNDING GRADE.
2. INDICATE WHETHER THE VERTICAL LOCATION OF THE GAS LINES
IS THE RESULT OF ASBUILTS OR TEST PITS.
3. ACCORDING TO THE LANDSCAPE AND LIGHTING PLAN, DATED
12/19/16, TREES AND/OR STREET LIGHTS WILL CONFLICT WITH
WATER METERS ON LOTS 18, 23/24, AND 44. PLEASE ELIMINATE
THESE CONFLICTS AND MAKE ANY OTHER CHANGES AS NEEDED.
4. IT APPEARS AS IF THE ROOF DRAIN NETWORK FOR LOTS 40 AND
43 WILL CONFLICT WITH THE PROPOSED WATER METERS. PLEASE
ELIMINATE THESE CONFLICTS AND MAKE ANY OTHER CHANGES AS
NEEDED.
5. THE SANITARY SPURS IN THE COURTYARDS MUST BE LABELED AS
"PRIVATE" IN BOTH PLAN AND PROFILE.
6. THE MATERIAL QUANTITY LIST ON THE COVER SHOULD BE BROKEN
OUT INTO PUBLIC AND PRIVATE ITEMS. SPECIFICALLY, THE 6"
PVC FOR THE SPURS AND THE ASSOCIATED CLEANOUTS SHOULD BE
LISTED UNDER A SUBHEADING OF "PRIVATE SEWER".
7. PLEASE IDENTIFY THE EASEMENTS "WA" AND "WSA" AS
"PRIVATE" IN THE LEGEND ON SHEETS 3 & 4.
8. PROVIDE A STRUCTURE LABEL FOR SANITARY MH4A ON SHEETS 3
& 4.
9. THE SANITARY LATERAL FOR LOT 33 WILL HAVE TO GO UNDER A
NEWLY-PROPOSED SEGMENTAL RETAINING WALL. IF POSSIBLE, WE
RECOMMEND MOVING THE LATERAL TO THE FRONT OF THE HOUSE AND
CONNECTING SOMEWHERE BETWEEN MH 22 AND 4A. OTHERWISE, THE
LATERAL WILL NEED TO BE SLEEVED UNDER THE WALL AND A
LICENSE AGREEMENT WILL NEED TO BE OBTAINED THROUGH OUR ROW
DIVISION.
10. SEWER BACKFLOW DEVICES WILL BE REQUIRED ON LOTS 1 & 2
BASED ON THE FF ELEVATIONS SHOWN ON SHEET 9. PLEASE
PROVIDE A NOTE ON THE LOTS THAT A BACKWATER VALVE WILL BE
REQUIRED.
11. ALL WATER METERS ON SHEETS 3 AND 4 ARE SHOWN AS A
"TYPE 1" (3/4" SERVICE, 5/8" METER). PLEASE CLARIFY AND
COORDINATE THE SERVICES UTILIZING FIR-1B SPRINKLERING WITH
THE GRAPHICAL DEPICTION AND TEXT DESCRIPTION FOR TYPE 1 AND
TYPE 2 METER ARRANGEMENTS.
12. ON SHEET 3, PLEASE REMOVE THE NOTE INDICATING AN 8"
PLUG AT MH23. THE MANHOLE WILL BE REQUIRED TO BE CORE-
DRILLED AT THE TIME OF A FUTURE TIE-IN.
13. LABEL PROPOSED WATER AND SEWER LINES WITH SIZE AND
MATERIAL IN PLAN VIEW.
14. LATERALS AND WATER METERS TERMINATING IN OPEN SPACE
WILL REQUIRE PUBLIC EASEMENTS UP TO THE PROPERTY LINE.
THIS CONDITION HAS BEEN OBSERVED FOR THE FOLLOWING
LOCATIONS: LOT 18 (WM), LOT 32 (SAN LAT), LOT 33 (SAN LAT),
AND LOT 41 (SAN LAT).
15. MH 5 SHOULD BE LOCATED OUTSIDE OF THE GASLINE ROW. IT
APPEARS THAT THE MANHOLE COULD SLIDE BACK FROM THE EASEMENT
AND TO THE RIGHT OF THE CL WITHOUT AFFECTING OVERALL
ALIGNMENT LENGTH OR GENERATING ANY CONFLICTS.
16. AS A RESULT OF ANY CHANGES TO THE PROPOSED UTILITIES
RESULTING FROM THESE COMMENTS, PLEASE UPDATE THE MATERIAL
QUANTITIES ON THE COVER SHEET ACCORDINGLY.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
REVIEW DEPARTMENT: UTILITIES DEPARTMENT
REVIEWER/PHONE # : ANDREW BARNES / 804-748-1338
NAME OF PLAN : AMBERLEIGH SECTION 4
ADDRESS : 9628 LADINO LN/ CLOVER HILL
SUBMISSION DATE : 08/30/17
PLAN DATED : 05/16/17
REVIEW DATE : 09/19/17
SITE PLAN NO. : 17CP0047
COMMENTS : 3RD REVIEW-NOT APPROVED
TABLE REVIEW : YES
PLAT PROCESS :
1. PRIVATE SANITARY SEWER SHOWN IN PROFILE VIEW ON SHEET 6
MUST BE LABELED AS "PRIVATE".
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
REVIEW DEPARTMENT: CHESTERFIELD TRANSPORTATION DEPARTMENT
REVIEWER/PHONE#: STEVEN E. SIMONSON, P.E. (804)748-1037
NAME OF PLAN: AMBERLEIGH, SECTION 4
CASE NUMBER: 17CP0047
LATEST PLAN DATE: 09/07/2016
DEPT. REC'D. DATE: 09/30/2016
SUBMITTAL NUMBER: ONE
REVIEW DATE: 10/20/2016
RECOMMENDATION: NOT APPROVED
TABLE REVIEW: NO
1. A TEMPORARY TURNAROUND SHALL BE CONSTRUCTED AT THE
WESTERN END OF AMBERDALE DRIVE, AND AMBERDALE DRIVE SHALL
BE EXTENDED TO THE WEST AS FAR AS PRACTICABLE WITHOUT
NECESSITATING OFF-SITE CONSTRUCTION EASEMENTS (PROFFERED
CONDITION 15 OF ZONING CASE 07SN0365).
2. COMMENT: THE EVENTUAL APPROVAL OF THESE CONSTRUCTION
PLANS WILL NOT IMPLY APPROVAL OF THE ACCESS LOCATIONS ALONG
AMBERDALE DRIVE TO THE "FUTURE COMMERCIAL PROPERTY" TO THE
SOUTH. ACCESS TO THAT DEVELOPMENT WILL BE ADDRESSED IN
CONJUNCTION WITH SITE PLAN REVIEW.
REVIEW DEPARTMENT: CHESTERFIELD TRANSPORTATION DEPARTMENT
REVIEWER/PHONE#: STEVEN E. SIMONSON, P.E. (804)748-1037
NAME OF PLAN: AMBERLEIGH, SECTION 4
CASE NUMBER: 17CP0047
LATEST PLAN DATE: 02/14/2017
DEPT. REC'D. DATE: 02/20/2017
SUBMITTAL NUMBER: TWO
REVIEW DATE: 03/08/2017
RECOMMENDATION: APPROVED
TABLE REVIEW: YES
.
REVIEW DEPARTMENT: CHESTERFIELD TRANSPORTATION DEPARTMENT
REVIEWER/PHONE#: STEVEN E. SIMONSON, P.E. (804)748-1037
NAME OF PLAN: AMBERLEIGH, SECTION 4 7
CASE NUMBER: 17CP0047
LATEST PLAN DATE: 05/16/2017
DEPT. REC'D. DATE: 08/31/2017
SUBMITTAL NUMBER: THREE
REVIEW DATE: 09/07/2017
RECOMMENDATION: APPROVED
TABLE REVIEW: YES
.
REVIEW DEPARTMENT:PLANNING
REVIEWER / PHONE #: BRAD MORRISON / 717-6143
PLAN NAME: AMBERLEIGH SEC 4.
PLAN NUMBER : 17CP0047
ORIGINAL PLAN DATE: 9-7-16
REVISION DATE:
LATEST SUBMISSION DATE: 9-26-16
REVIEW DATE: 9/20/16
SUBMITTAL NUMBER : 1
STATUS: REVISIONS REQUIRED
1. LOT DIMENSIONS MUST BE LABELED ON PLANS.
2. AMBERDALE DRIVE SHALL BE EXTENDED WITH
PAVEMENT TO THE PROPERTY LINE TO MEET
FIRE CODE REQUIREMENTS.
EXTEND TO THE PROPERTY LINE(S).
3. ZONING CASE NUMBERS MUST BE LISTED ON
COVER SHEET.
4. TENTATIVE CASE NUMBER AND APPROVAL DATE
MUST BE LISTED ON COVER SHEET.
5. A CONCEPTUAL LANDSCAPE PLAN TO INCLUDE
STREET TREES MUST BE PROVIDED.
6. ARCHITECTURAL PLANS MUST BE SUBMITTED.
MATERIAL AND STYLE SHALL BE CONSISTENT
7. A LIGHTING PLAN MUST BE SUBMITTED WITH
MATERIALS AND STYLE MUST BE CONSISTENT WITH THOSE
PROPOSED IN THE APPLICATION PACKAGE SUBMITTED FOR
CASE 07SN0365 IN JULY 2007. OR ALL YARDS
8. MAINTAIN 5 FOOT SETBACKS FOR ALL YARDS
NOT FRONTING ON A PUBLIC STREET WHERE
UNITS ARE NOT ATTACHED. LOT 1 DOES NOT
MEET THIS REQUIREMENT. REMENT.
DOES NOT MEET THIS REQUIREMENT. THE 5 FOOT
9. DRIVEWAYS MUST NOT EXTEND INTO THE 5 FOOT
RPA BUILDING SETBACK. LOTS 1, 33 DO NOT
MEET THIS REQUIREMENT.
10. THE 10 FOOT BUFFER SHOWN ASSOCIATED WITH
THE BRICK WALL SHOULD BE LABELED AS
LANDSCAPE STRIP.
11. LOT 33 DRIVEWAY SHOULD HAVE LICENSE
AGREEMENT DUE TO ENCROACHMENT INTO EASEMENT.
12. DRIVEWAY SPECIFICATIONS MUST BE PROVIDED. PER
CASE 07SN0365 DRIVEWAYS MUST BE HARDSCAPED.
"HARDSCAPED" SHALL INCLUDE THE USE OF PAVERS.
13. PLANS SHALL SPECIFY THAT BUILDING PERMITS FOR LOTS
ADJACENT THE BRICK WALL WILL NOT BE ISSUED UNTIL
THE WALL IS COMPLETE.
14.PROVIDE COURT DOCUMENTATION FOR THE GRAVE
REMOVAL ON PROPOSED LOT 30.
15. SUBMIT ARCHITECTURAL PLANS FOR PROPOSED CONSTRUCTION.
MATERIALS AND STYLE MUST BE CONSISTENT WITH THOSE
PROPOSED IN THE APPLICATION PACKAGE SUBMITTED FOR
CASE 07SN0365 IN JULY 2007.
16. SUBMIT A CONCEPTUAL LANDSCAPE PLAN INCLUDING
STREET TREE LOCATIONS.
NOTES:
1. BE ADVISED THAT A MAJOR CHANGE MAY TRIGGER A 50 FOOT
BUFFER TO BE NECESSARY FROM ADJACENT AGRICULTURALLY
ZONED PROPERTY AS WELL AS ADDITIONAL COMMON AREA
PARKING AND ANY OTHER APPLICABLE PROVISIONS OF THE
CURRENT ZONING AND SUBDIVISON ORDINANCE.
2. "FUTURE DEVELOPMENT" SHOULD NOT BE MENTIONED ON
FINAL PLATS.
*********************************************************
REVIEW DEPARTMENT: PLANNING
REVIEWER / PHONE #: BRAD MORRISON / 717-6143
PLAN NAME: AMBERLEIGH SEC 4.
PLAN NUMBER : 17CP0047
ORIGINAL PLAN DATE: 9-7-16
REVISION DATE: 2/14/17
LATEST SUBMISSION DATE: 2/16/17
REVIEW DATE: 3/9/17
SUBMITTAL NUMBER : 1
STATUS: REVISIONS REQUIRED
1. AMBERDALE DRIVE SHALL BE EXTENDED WITH
PAVEMENT TO THE PROPERTY LINE TO MEET
FIRE CODE REQUIREMENTS.
2. MAINTAIN 5 FOOT SETBACKS FOR ALL YARDS
NOT FRONTING ON A PUBLIC STREET WHERE
UNITS ARE NOT ATTACHED. LOTS 32, 33, 39, 41
MUST HAVE THE PROPERTY LINES MOVED 5' INTO
THE COMMON AREA SO THAT THERE IS A 5' STRIP
OF LOT WHERE COMMON WALLS ARE NOT SHARED.
3. LOT 33 DRIVEWAY SHOULD HAVE LICENSE
AGREEMENT DUE TO ENCROACHMENT INTO EASEMENT.
4. PROVIDE COURT DOCUMENTATION FOR THE GRAVE
REMOVAL ON PROPOSED LOT 30.
5. SUBMIT ARCHITECTURAL PLANS FOR PROPOSED CONSTRUCTION.
MATERIALS AND STYLE MUST BE CONSISTENT WITH THOSE
PROPOSED IN THE APPLICATION PACKAGE SUBMITTED FOR
CASE 07SN0365 IN JULY 2007.
NOTES:
1. BE ADVISED THAT A MAJOR CHANGE MAY TRIGGER A 50 FOOT
BUFFER TO BE NECESSARY FROM ADJACENT AGRICULTURALLY
ZONED PROPERTY AS WELL AS ADDITIONAL COMMON AREA
PARKING AND ANY OTHER APPLICABLE PROVISIONS OF THE
CURRENT ZONING AND SUBDIVISON ORDINANCE.
2. "FUTURE DEVELOPMENT" SHOULD NOT BE MENTIONED ON
FINAL PLATS.
3. ANY CHANGE IN WHETHER IT STEMS FROM
DEPARTMENT COMMENTS OR AN
ENGINEERING CHANGE REQUESTED BY
THE APPLICANT, MAY GENERATE
ADDITIONAL COMMENTS FROM THE
REVIEWING DEPARTMENTS, RESULTING IN
REQUIRED REVISIONS.
4. ANY BULK REQUIREMENTS (LOT AREA, LOT
WIDTH, SETBACKS, BUILDING ENVELOPES,
ETC.) SHOWN ON THE APPROVED
CONSTRUCTION PLANS WILL BE SUBJECT
TO REVIEW FOR COMPLIANCE AT TIME OF
FINAL CHECK.
********************************************
REVIEW DEPARTMENT: PLANNING
REVIEWER / PHONE #: BRAD MORRISON / 717-6143
PLAN NAME: AMBERLEIGH SEC 4.
PLAN NUMBER : 17CP0047
ORIGINAL PLAN DATE: 9-7-16
REVISION DATE: 5/16/17
LATEST SUBMISSION DATE: 8/30/17
REVIEW DATE: 9/14/17
SUBMITTAL NUMBER : 3
STATUS: REVISIONS REQUIRED
.
1. LOT 33 DRIVEWAY SHOULD HAVE LICENSE
AGREEMENT DUE TO ENCROACHMENT INTO EASEMENT.
2. PROVIDE COURT DOCUMENTATION FOR THE GRAVE
REMOVAL ON PROPOSED LOT 30. CONSTRUCTION PLANS
MAY NOT BE APPROVED UNTIL PROCESS IS COMPLETED.
3. LANDSCAPE PLAN MUST BE CONSISTENT WITH THE
LANDSCAPE TENTATIVE SUBMITTAL 08TS0415 LAST
REVISED 4/16/11. AREAS OF CONCERN ARE RED MAPLE
PLANTINGS ON AMBERDALE DRIVE.
4. LIST ZONING CASE 17SN0772 & 12SN0112 IN NOTES.
5. AN EASEMENT IS REQUIRED TO ACCESS GRAVESITE
FROM THE RIGHT OF WAY.
6. A 2400 SQUARE FOOT POCKET PARK IS REQUIRED NEAR THE
NORTHERN BORDER OF THE OPEN SPACE. THE PARK MUST
INCLUDE COMPATIBLE FEATURES WITH EXHIBIT B FROM
CASE17SN0772.
7. ZONED R-TH. CORRECT IN NOTES.
.
NOTES:
A. BE ADVISED THAT A MAJOR CHANGE MAY TRIGGER A 50 FOOT
BUFFER TO BE NECESSARY FROM ADJACENT AGRICULTURALLY
ZONED PROPERTY AS WELL AS ADDITIONAL COMMON AREA
PARKING AND ANY OTHER APPLICABLE PROVISIONS OF THE
CURRENT ZONING AND SUBDIVISON ORDINANCE.
B. "FUTURE DEVELOPMENT" SHOULD NOT BE MENTIONED ON
FINAL PLATS.
C. ANY CHANGE IN WHETHER IT STEMS FROM DEPARTMENT
COMMENTS OR AN ENGINEERING CHANGE REQUESTED BY
THE APPLICANT, MAY GENERATE ADDITIONAL COMMENTS
FROM THE REVIEWING DEPARTMENTS, RESULTING IN
REQUIRED REVISIONS.
D. ANY BULK REQUIREMENTS (LOT AREA, LOT WIDTH,
SETBACKS, BUILDING ENVELOPES, ETC. SHOWN ON
THE APPROVED CONSTRUCTION PLANS WILL BE SUBJECT
TO REVIEW FOR COMPLIANCE AT TIME OF FINAL CHECK.
E. ARCHITECTURE TO BE CONSISTENT WITH EXHIBIT A- 17SN0772.
MUST BE ADDED TO FINAL PLAT. GARAGE DOORS TO BE
CONSISTENT WITH CONDITION # 5, 17SN0772.
REVIEW DEPARTMENT: FIRE AND LIFE SAFETY
REVIEWER / PHONE#: KIM LESTER / 748-1489
PLAN NAME: AMBERLEIGH SECTION 4
PLAN NUMBER: 17CP0047
LATEST REVISION DATE: 9/7/16
REVIEW DATE: 10/3/16
LATEST SUBMISSION DATE: 9/29/16
SUBMITTAL NUMBER: 1ST REVIEW
STATUS: NOT APPROVED
TABLE REVIEW: NO
THE FOLLOWING UNITS DO NOT MEET HOSE LAY
REQUIREMENTS. THERE WAS A CODE MODIFICATION WRITTEN ON
APRIL 26, 2011 REQUESTING LOTS 6 THRU 26, 31THRU 33, 35
THRU 38 AND 40 THRU 42 WILL BE SPRINKLERED WITH A NFPA
13D SYSTEM.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
REVIEW DEPARTMENT: FIRE AND LIFE SAFETY
REVIEWER / PHONE#: KIM LESTER / 748-1489
PLAN NAME: AMBERLEIGH SECTION 4
PLAN NUMBER: 17CP0047
LATEST REVISION DATE: 2/14/17
REVIEW DATE: 3/1/17
LATEST SUBMISSION DATE: 2/17/17
SUBMITTAL NUMBER: 1ST REVIEW
STATUS: NOT APPROVED
TABLE REVIEW: YES
.
ON THE DETAIL FOR THE FIRE LINE PLEASE SHOW CLEARLY WHAT
SIZE OF TAP THAT WILL BE MADE FOR THE FIRE LINE.
.
SHOW ON SHEET 3 WHAT LOTS WILL BE SPRINKLED.
.
PLACE THE FOLLOWING NOTE ON THE PLAN "APPROVAL OF THE
CONSTRUCTION PLAN DOES NOT INCLUDE THE DESIGN OF THE FIRE
SPRINKLER SYSTEM UNDERGROUND PIPING FROM BACKFLOW
PREVENTION DEVICE TO ONE FOOT ABOVE FINISH FLOOR LEVEL.
PRIOR TO INSTALLTION, SHOP DRAWINGS AND A SEPARATE PERMIT
APPLICATION AND SHALL BE SUBMITTED THROUGH THE DEPARTMENT
OFL BUILDING INSPECTIONS FOR REVIEW AND APPROVAL."
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
REVIEW DEPARTMENT: FIRE AND LIFE SAFETY
REVIEWER / PHONE#: KIM LESTER / 748-1489
PLAN NAME: AMBERLEIGH SECTION 4
PLAN NUMBER: 17CP0047
LATEST REVISION DATE: 5/16/17
REVIEW DATE: 9/19/17
LATEST SUBMISSION DATE: 9/1/17
SUBMITTAL NUMBER: 3RD REVIEW
STATUS: APPROVED
TABLE REVIEW: YES
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
============================================================
============================================================
REVIEW DEPARTMENT : ENVIRONMENTAL ENGINEERING
REVIEWER/PHONE # : ADAM MARSHALL, P.E. (717-6711)
NAME OF PLAN : AMBERLEIGH SECTION 4
SITE PLAN NO. : 17CP0047
LATEST PLAN DATE : 09/07/16
DEPT. REC'D DATE : 09/29/16
SUBMITTAL NUMBER : 1
REVIEW DATE : 10/28/16
RECOMMENDATION : REVISIONS REQUIRED
TABLE REVIEW : NO
-------- GENERAL NOTES --------
001. THE RESPONSIBILITY FOR COMPLIANCE WITH CHESTERFIELD
COUNTY STANDARDS AND POLICIES, AND WITH STATE AND
FEDERAL REGULATIONS WILL BE PLACED ON THE PROFESSIONAL
ENGINEER WHO SIGNS AND SEALS THE CONSTRUCTION PLANS
APPROVED.
002. THE RESPONSIBILITY FOR ACHIEVING AND MAINTAINING
SATISFACTORY LOT DRAINAGE WILL BE THAT OF THE DEVELOPER
UP THROUGH A PERIOD OF ONE YEAR AFTER STATE ACCEPTANCE
OF THE SUBDIVISION ROADS.
-------- EROSION CONTROL --------
001. PROVIDE AN ITEMIZED EROSION CONTROL BOND ESTIMATE FOR
REVIEW AND/OR APPROVAL.
002. PRIOR TO A LAND DISTURBANCE PERMIT ISSUANCE:
A) CONSTRUCTION PLANS MUST BE RECEIVE FINAL PLANNING
DEPARTMENT APPROVAL.
B) THE ENVIRONMENTAL ENGINEERING DEPARTMENT SHALL
REQUIRE COPIES OF APPLICABLE CORRESPONDENCE FROM THE
U.S. ARMY CORPS OF ENGINEERS AND DEPARTMENT OF
ENVIRONMENTAL QUALITY SUCH THAT IT MAY BE DETERMINED
THAT ANY REQUIRED WETLANDS PERMITS HAVE BEEN
RECEIVED.
C) A 2014-2019 VSMP COVERAGE LETTER MUST BE RECEIVED.
D) AN EROSION CONTROL BOND MUST BE POSTED AND APPROVED.
E) COPIES OF THE ACTUAL VDOT LAND USE PERMIT FOR THE
TIE-IN TO BROADMOOR ROAD MUST BE PROVIDED TO
ENVIRONMENTAL ENGINEERING.
F) FLAGGING AND/OR SAFETY FENCE AROUND USACOE
JURISDICTIONAL WETLANDS AND/OR OTHER ENVIRONMENTALLY
SENSITIVE AREAS MUST BE INSTALLED AND CLEARLY
VISIBLE.
G) DB/PG FOR ANY OFFSITE EASEMENTS MUST BE PROVIDED TO
ENVIRONMENTAL ENGINEERING.
H) PRIOR TO ISSUANCE OF A LAND DISTURBANCE PERMIT, A
COPY OF THE AUTOCAD FILE MUST BE SUBMITTED TO
CAROLE CLIBORNE OF ENVIRONMENTAL ENGINEERING. THE
AUTOCAD FILE MUST BE SAVED AS A .DWG OR .DXF IN
AUTOCAD VERSION 2009 OR EARLIER AND REFERENCED
DIRECTLY TO THE VIRGINIA STATE PLANE COORDINATE
SYSTEM, SOUTH ZONE IN THE NAD83 DATUM. THE AUTOCAD
FILE MAY BE SUBMITTED ON A CD, DVD, OR VIA EMAIL
AND MUST BE CLEARLY LABELED WITH THE SUBDIVISION
NAME AND SECTION, SUBDIVISION PLAN NUMBER, THE
ENGINEERING FIRM AND THE CAD FILE PREPARER'S NAME
AND PHONE NUMBER. THE FILE MUST CONTAIN THE
FOLLOWING, EACH CLEARLY LABELED IN SEPARATE LAYERS:
1. EDGES OF ROADS TO INCLUDE CURB AND GUTTER; AND,
2. EDGES OF SIDEWALKS.
002. RELOCATE THE SEDIMENT BASIN DETAILS FROM SHEET 17 TO
SHEET 7.
003. SPECIFY IN THE PHASE 1 CONSTRUCTION NARRATIVE THAT THE
SEDIMENT BASIN RISER/BARREL MATERIALS MUST BE ON SITE
PRIOR TO LAND DISTURBANCE PERMIT ISSUANCE.
004. SPECIFY IN THE PHASE 1 CONSTRUCTION NARRATIVE THAT THE
SUPER SILT FENCE ALONG THE RPA MUST BE INSTALLED PRIOR
TO LDP ISSUANCE.
005. IN THE PHASE 1 CONSTRUCTION NARRATIVE, ELABORATE UPON
THE STEPS NECESSARY TO INSTALL THE SEDIMENT BASIN (STEP
#5).
004. SPECIFY IN THE PHASE 1 CONSTRUCTION NARRATIVE (STEP #3)
AND IN PLAN VIEW ON SHEET 7, THAT THE CONSTRUCTION
ENTRANCE AT AMBERDALE DRIVE SHALL BE THE PRIMARY ACCESS
TO THE SITE, AND THE CONSTRUCTION ENTRANCE AT
AMBERGROVE CIRCLE SHALL ONLY BE USED MINIMALLY.
005. SPECIFY IN THE PHASE 1 CONSTRUCTION NARRATIVE THAT
ACCESS TO THE N/F HULL PROPERTY SHALL BE MAINTAINED AT
ALL TIMES DURING CONSTRUCTION.
006. IN ALL AREAS WHERE SSF IS SPECIFIED IN THE VICINITY OF
THE RPA, SPECIFY THAT OPTIC ORANGE FABRIC SHALL BE USED
ON THE SSF.
007. SPECIFY OP AT THE END OF THE SEDIMENT BASIN OUTFALL, TO
BE INSTALLED DURING EC PHASE 1.
008. IT APPEARS THAT THE DD THAT RUNS FROM THE WEST OF LOT
44 TO THE NORTH OF LOT 1 CAN BE REMOVED.
009. SPECIFY OPTIC ORANGE SSF TO BE INSTALLED DURING EC
PHASE 1 ALONG THE DOWNSTREAM PERIMETER OF THE LOT 1
GRADING, AND OPTIC ORANGE SSF ALONG THE RPA LIMITS MAY
BE SPECIFIED HERE INSTEAD.
010. SPECIFY OPTIC ORANGE SSF TO BE INSTALLED DURING EC
PHASE 1 ALONG THE RPA TO THE REAR OF LOTS 36-44.
011. SPECIFY THE MATERIAL AND DIAMETER FOR THE TEMPORARY
CULVERT PIPE TO BE INSTALLED AT AMBERDALE DRIVE STA.
2+40 IN THE EC PHASE 1 PLAN.
012. SPECIFY A MODIFIED SEDIMENT TRAP TO BE INSTALLED DURING
EC PHASE 1 WITHIN THE LIMITS OF THE EASEMENT FOR THE
FUTURE STRUCTURE 36 INSTALLATION.
013. IN THE EC PHASE 2 PLAN, SPECIFY THAT ONLY A PORTION OF
STRUCTURE 36 SHALL BE INSTALLED, TO ALLOW FOR THE SITE
TO DRAIN INTO THE SEDIMENT TRAP NOTED IN THE PREVIOUS
COMMENT. ONCE THE SITE IS STABILIZED, THE SEDIMENT
TRAP SHALL BE REMOVED AND THE LEG OF STORM SEWER MAY BE
COMPLETED.
014. DARKEN THE PROPOSED CONTOURS ON SHEET 9.
015. SPECIFY SAFETY FENCE ALONG THE UPHILL LIMITS OF
DISTURBANCE THROUGH THE RPA FOR THE SANITARY SEWER
INSTALLATION.
016. SPECIFY THAT ALL DISTURBED AREAS WITHIN THE RPA SHALL
BE RESTORED PER THE RPA PLANTING PLAN, AND INCLUDE THE
PLANTING PLAN SPECS IN THE EC PLANS.
017. IT APPEARS THAT THE MINIMUM 2:1 LENGTH:WIDTH RATIO IS
NOT ACHIEVED PER THE CURRENT BASIN DESIGN, AND
THEREFORE BAFFLES WILL BE REQUIRED. PLEASE ADDRESS,
AND INCLUDE THE BAFFLE DETAIL IN THE PLANS.
018. IT APPEARS THAT A 15" DIAMETER PIPE HAS BEEN CALCULATED
FOR THE SEDIMENT BASIN BARREL, WITH A 36" RISER AND 60"
TRASH RACK. IT IS UNCLEAR HOW THE 12" PVC PIPE WITH
DEWATERING PIPE WILL SATISFY THIS DESIGN. PLEASE
ADDRESS.
019. PROVIDE AN ADDITIONAL MS-19 ANALYSIS ACROSS THE
EXISTING STREAM, JUST DOWNSTREAM OF THE NORTHERN
PROPERTY CORNER.
020. PROVIDE THE LIST OF ADEQUACY SITUATIONS WITH THE MS-19
TABLE ON SHEET 11.
021. REVISE THE PROJECT DESCRIPTION SECTION OF THE EC
NARRATIVE ON SHEET 11 TO READ "MULTI-FAMILY
RESIDENTIAL" INSTEAD OF "SINGLE FAMILY RESIDENTIAL".
025. INCLUDE "STORM SEWER OUTFALLS DIRECTLY INTO ESTABLISHED
100-YEAR FLOODPLAIN" IN PART 9 OF THE EC NARRATIVE.
026. IT IS THE RESPONSIBILITY OF THE APPLICANT TO COMPLY
WITH AND/OR ACQUIRE ALL APPLICABLE FEDERAL AND/OR STATE
PERMITS IN RELATION TO ENVIRONMENTAL FEATURES
INCLUDING, BUT NOT LIMITED TO, WETLANDS, SURFACE WATER,
GROUND WATER, AND AIR QUALITY. FINAL APPROVAL OF THESE
PLANS WILL NOT RELIEVE YOU OF YOUR RESPONSIBILITIES.
-------------- CBPA ---------------
001. REVISE ALL REFERENCES TO "BMP" IN THE PLAN SET TO READ
"SWM/BMP", INCLUDING THE TITLE OF SHEET 18.
002. PROVIDE AN ADDITIONAL CBPA COMPLIANCE SHEET (OR MODIFY
SHEET 18) TO SHOW THE FULL ON- AND OFF-SITE DRAINAGE
AREAS TO THE SWM/BMP BASIN, WITH % IMPERVIOUS NOTED FOR
EACH. DRAINAGE AREAS SHOWN SHOULD INCLUDE ON-SITE TO
SWM/BMP, OFF-SITE TO SWM/BMP, AND ON-SITE BYPASS.
003. PROVIDE A COMPLETED COPY OF THE CBPA/MS-4 TABLE ON THE
CBPA PLAN SHEET.
004. UTILIZE THE SAME CALCULATION METHODS WHEN DETERMINING
THE POST-DEVELOPMENT IMPERVIOUSNESS FOR THE SITE (STEP
2), AS WELL AS THE ON- AND OFF-SITE IMPERVIOUSNESS
DRAINING TO THE SWM/BMP (STEP 4), AS WERE USED IN THE
APPROVED WORKSHEET A CBPA CALCULATIONS PROVIDED AT THE
TIME OF TENTATIVE APPROVAL. THE PREVIOUSLY APPROVED
CBPA CALCS USED 39% FOR THE SITE, 27% ON-SITE TO THE
SWM/BMP, AND 18% OFF-SITE TO THE SWM/BMP. PROVIDE
BREAKDOWNS FOR EACH IMPERVIOUSNESS USED. FURTHER
DISCUSSION MAY BE HELPFUL.
005. PROVIDE THE BMP SIZING CALCULATION FOR DESIGN 6 WET
POND (4VR).
006. PROVIDE ADDITIONAL PROPOSED GRADING CONTOUR LABELS ON
SHEET 16.
007. SHOW THE ACTUAL GRADING FOR THE SEDIMENT FOREBAY
EMBANKMENT, IN LIEU OF JUST AN OUTLINE. ENSURE THE
POND VOLUME IS UPDATED, AS NECESSARY.
008. THE REQUIRED 2:1 LENGTH-TO-WIDTH RATIO IS NOT MET, AND
THEREFORE PERMANENT CONCRETE BAFFLES WILL BE REQUIRED
TO ACHIEVE THE CORRECT FLOW LENGTH. PLEASE ADDRESS,
AND PROVIDE A BAFFLE DETAIL IN THE PLANS.
009. SHOW THE IMPERMEABLE CLAY CORE, EXTENDING 1' INTO
IMPERMEABLE SUBGRADE, ON THE SWM-BMP PROFILE ON SHEET
16, AND INCLUDED LANGUAGE IN THE EARTH DAM CONSTRUCTION
NARRATIVE, UNDER THE EMBANKMENT SECTION, STATING THAT
THE IMPERMEABLE CLAY CORE SHALL BE KEYED INTO
IMPERMEABLE SUBGRADE.
010. SPECIFY THE MATERIAL FOR THE DEWATERING PIPE ON THE
SWM-BMP PROFILE AND IN PLAN VIEW ON SHEET 16.
011. IT APPEARS THAT THE CALLOUT RE: THE DEWATERING GATE
VALVE HAS BEEN CUT OFF ON SHEET 16. PLEASE ADDRESS.
012. IN STEP 8 OF THE SWM/BMP CONSTRUCTION NARRATIVE,
REFERENCE IS MADE TO AN AQUATIC BENCH, BUT NO BENCH IS
SPECIFIED IN THE PLANS. PLEASE ADDRESS.
013. LABEL THE INTERSECTION WITH AMBERDALE ON THE SWM-BMP
ACCESS ROAD PROFILE ON SHEET 16.
014. SHOW AND LABEL STRUCTURES 2 AND 51 ON THE SWM-BMP
ACCESS ROAD PROFILE.
015. IT IS NOTED PER THE EMAIL FROM BRAD SCHURMAN TO ROBERT
BOSWELL DATED 9/26/16 THAT FENCING WILL BE USED TO
ADDRESS THE SAFETY REQUIREMENTS FOR THE SWM/BMP.
PLEASE SHOW THE FENCE ALIGNMENT IN THE PLANS, AND
PROVIDE THE FENCE DETAIL.
016. PROVIDE ALL SWM/BMP WEIR DETAILS TO SCALE.
017. ADD A 36" CURTAINWALL AT THE FRONT EDGE OF THE CONCRETE
WEIR.
018. PLEASE NOTE THAT THE 50' VEGETATED PERIMETER YARD
SETBACK AROUND THE SWM/BMP IS CONTAINED WITHIN THE
RPA ON ALL APPLICABLE PLAN SHEETS.
-------- ROAD AND DRAINAGE --------
001. OUR CONCERNS ARE BASED ON THE INFORMATION SHOWN IN THE
CONSTRUCTION PLANS. THE RESPONSIBILITY FOR IDENTIFYING
CRITICAL AREAS IS PLACED ON THE PROFESSIONAL ENGINEER
WHO SEALS THE CONSTRUCTION PLANS APPROVED. WE RESERVE
THE RIGHT TO INSPECT CONVEYANCE SYSTEMS PRIOR TO PLAT
RECORDATION AND/OR STATE ACCEPTANCE TO DETERMINE IF
ADDITIONAL IMPROVEMENTS ARE REQUIRED.
002. THESE COMMENTS HAVE BEEN PREPARED WITHOUT THE BENEFIT
OF A RECENT SITE INSPECTION. SUPPLEMENTAL COMMENTS MAY
BE PROVIDED UPON EVALUATION OF SITE CONDITIONS, ETC. IN
THE VERY NEAR FUTURE.
003. PRIOR TO CONSTRUCTION PLAN APPROVAL, THE ENVIRONMENTAL
ENGINEERING DEPARTMENT MUST RECEIVE COPIES OF THE
WRITTEN NOTIFICATION (INCLUDING RETURN RECEIPTS) OF THE
IMPENDING CONSTRUCTION, SENT CERTIFIED MAIL, RETURN
RECEIPT REQUESTED AND SIGNED BY THE FOLLOWING ADJACENT
PROPERTY OWNERS: N/F HULL, N/F MUMFORD, N/F ROUSSARD,
N/F ROBERTS, N/F MCDOWELL, N/F S.H. COLLIER OF
VIRGINIA, N/F MINTER, N/F SUTTON, N/F ASHTON, N/F
HARRIS, N/F DECHIARA, N/F GURKIN, N/F FERRARA, N/F
MONTGOMERY, AND N/F HUGHES.
004. ADD THE ZONING CASE NUMBER AND APPROVAL DATE TO THE
COVER SHEET.
005. ADD THE TENTATIVE CASE NUMBER AND APPROVAL DATE TO THE
COVER SHEET.
006. SHOW AND PROVIDE DB/PG REFERENCE FOR ALL EXISTING
EASEMENTS ON SHEET 2.
007. LABEL EXISTING AMBERLEIGH CIRCLE (INCLUDE R/W WIDTH AND
STATE ROUTE NUMBER) ON ALL APPLICABLE PLAN SHEETS.
008. PROVIDE THE R/W WIDTH AND STATE ROUTE NUMBER FOR ALL
EXISTING ROADS ON ALL PLAN SHEETS.
009. SHOW THE LOCATION OF ALL EXISTING BUILDINGS/STRUCTURES
ON THE N/F HULL PROPERTY ON ALL APPLICABLE PLAN SHEETS.
010. SHOW AND LABEL THE LIMITS OF THE FEMA ZONE A FLOODPLAIN
ON THE N/F HULL PROPERTY ON ALL APPLICABLE PLAN SHEETS.
011. IN ADDITION TO THE VDOT BARRICADE, PLEASE SHOW A
PORTION OF THE EXISTING LADINO GRAVEL ROAD BEING
REMOVED WITHIN THE AMBERDALE STUB ROAD RIGHT-OF-WAY.
PLEASE ADDRESS.
012. SPECIFY A 10' TEMPORARY CONSTRUCTION EASEMENT ALONG THE
NORTH SIDE OF THE AMBERDALE DRIVE IN THE OPEN SPACE IN
THE VICINITY OF LOT 1.
013. CLEARLY SHOW THE LIMITS OF THE EXISTING C&P TELEPHONE
EASEMENT IN THE VICINITY OF THE AMBERDALE DRIVE STUB,
AND NOTE WHAT IS TO BE DONE WITH THE EASEMENT UPON
CONSTRUCTION (E.G. QUITCLAIM PORTIONS TO BE RECORDED AS
R/W). DOCUMENTATION FROM C&P TELEPHONE MUST BE
PROVIDED PRIOR TO CONSTRUCTION PLAN APPROVAL.
014. IT APPEARS THAT A STRIP OF ADDITIONAL OFF-SITE R/W WILL
NEED TO BE ACQUIRED FROM WACHOVIA BANK IN ORDER TO TIE
INTO AMBERDALE DRIVE AS CURRENTLY PROPOSED. PLEASE
ADDRESS.
015. IT IS UNCLEAR WHETHER THE NARROW STRIP OF EXISTING
AMBERDALE DRIVE R/W TO THE NORTH OF THE EXISTING STUB
IS INTENDED TO BE RELINQUISHED, OR WHETHER STRUCTURES
E101 AND E100A ARE INTENDED TO REMAIN IN PLACE. PLEASE
ADDRESS.
016. LABEL STRUCTURE E100A ON ALL APPLICABLE PLAN AND
PROFILE SHEETS.
017. IT APPEARS THAT THE EASEMENT NOTATION "EE" (SEE
VICINITY OF LOTS 18/20 ON SHEET 3) HAS NOT BEEN
INCLUDED IN THE LEGEND. PLEASE ADDRESS.
018. THE NOTE RE: THE APPROX. LOCATION OF LADINO LANE TO
BECOME ONE-WAY ON SHEET 3 SHOULD BE REMOVED. PLEASE
REVISE.
019. HATCH/STIPPLE ALL PROPOSED SIDEWALK ON THE PLAN SHEETS.
020. PLEASE BE ADVISED THAT LICENSE AGREEMENTS WILL BE
REQUIRED FOR ALL LOCATIONS WHERE THE PROPOSED BRICK
WALL ENCROACHES INTO THE DRAINAGE EASEMENTS.
021. TEMPORARY CONSTRUCTION EASEMENTS, AND WRITTEN
PERMISSION, FROM ADJACENT PROPERTY OWNERS N/F ROBERTS
AND N/F MCDOWELL, AS WELL AS FROM THE AMBERLEIGH
HOMEOWNERS' ASSOCIATION, ALLOWING THE GRADING NECESSARY
HOMEOWNERS' ASSOCIATION, ALLOWING THE GRADING NECESSARY
FOR THE TIE-IN TO AMBERLEIGH CIRCLE, WILL BE REQUIRED
PRIOR TO CONSTRUCTION PLAN APPROVAL.
022. IT APPEARS THAT AN INGRESS/EGRESS EASEMENT WILL BE
REQUIRED ON THE PORTION OF THE DRIVEWAY TO THE N/F
PROPERTY WHICH FALLS WITHIN THE SUBDIVISION SECTION
LIMITS. IN ADDITION, A NOTE SHOULD BE PROVIDED
STATING THAT SUITABLE ACCESS SHALL BE MAINTAINED
THROUGHOUT PROJECT DURATION. PLEASE ADDRESS.
023. PER TENTATIVE CONDITION #8, ALL ROOF DRAIN COLLECTORS
SHALL BE 12" PVC. PLEASE REVISE ALL NOTES AND DETAILS
ACCORDINGLY.
024. SHOW THE LOCATION OF ALL NYLOPLAST INLETS IN PLAN VIEW,
AS PER THE ROOF LEADER DETAIL ON SHEET 13.
025. THERE APPEARS TO BE A STRAY NOTE RE: FOUNDATION DRAINS
AND ROOF LEADERS TO THE SOUTH OF AMBERDALE DRIVE AT
APPROX. STATION 5+00-6+00 WHICH SHOULD BE REMOVED FROM
SHEET 3. PLEASE ADDRESS.
026. PROVIDE A NOTE IN BOLD PRINT ON SHEET 3 WHICH STATES
THAT THE HOMEOWNERS' ASSOCIATION SHALL BE RESPONSIBLE
FOR THE MAINTENANCE OF ALL ROOF DRAIN LEADERS AND
COLLECTORS AND ANY ASSOCIATED APPURTENANCES.
027. MAKE THE 100-YEAR FLOODPLAIN LIMITS MORE PROMINENT ON
ALL PLAN SHEETS.
028. ADD THE 100-YEAR DAM FAILURE ELEVATIONS TO ALL CROSS-
SECTION LOCATIONS.
029. REVISE THE CALLOUT FOR THE SWM/BMP ACCESS EASEMENT ON
SHEET 3 AND IN ANY OTHER LOCATIONS TO READ "20'"
INSTEAD OF "12'".
030. SHOW THE SWM/BMP ACCESS ROAD AS PAVED IN PLAN VIEW ON
SHEET 3 AND ANY OTHER LOCATIONS, AS PER THE ACCESS ROAD
SECTION ON SHEET 16, OR OTHERWISE REVISE THE ACCESS
ROAD SECTION.
031. REVISE THE LABEL FOR "100' CONSERVATION BUFFER" TO READ
"100' RPA BUFFER AREA" ON ALL APPLICABLE PLAN SHEETS.
032. THE NOTE REFERRING TO THE EXISTING DRIVEWAY TO THE N/F
HULL PROPERTY ON SHEET 3 SHOULD BE REVISED TO READ
"...AMBERGROVE AVE...".
033. IT APPEARS THAT THE RELOCATED PORTION OF THE DRIVEWAY
TO THE N/F HULL PROPERTY WHERE IT TIES INTO AMBERGROVE
AVENUE IS EXCESSIVELY STEEP. PLEASE ADDRESS.
034. SHOW ALL OF THE SWM/BMP WATER SURFACE LIMITS ON ALL
APPLICABLE PLAN SHEETS.
035. SHOW AND LABEL THE 100-YEAR BACKWATER LIMITS AND
ELEVATION AT STRUCTURE 51 ON SHEET 3.
036. PLEASE PROVIDE DOCUMENTATION FROM THE USACOE OR DEQ
WHICH STATES THAT ADDITIONAL PERMITTING WILL NOT BE
NECESSARY FOR THE EXCAVATION OF THE EXISTING POND,
WHICH FALLS ENTIRELY WITHIN WETLANDS.
037. SPECIFY ADDITIONAL RPA SIGNS BETWEEN THE CURRENTLY
PROPOSED LOCATIONS, DUE TO THE HIGHER DENSITY OF THIS
DEVELOPMENT.
038. PROVIDE DESCRIPTIONS FOR STRUCTURES 24B, 26B, 28B, AND
49 IN THE TABLE ON SHEET 3.
039. SPECIFY 2' CONCRETE GUTTERS ON EVERY DI-6 STRUCTURE IN
THE DRAINAGE DESCRIPTION TABLE.
040. SPECIFY THE ORIENTATION (SOUTH) OF THE SLOT OPENING (W/
2' CONCRETE GUTTER) FOR STRUCTURE 3 IN THE DRAINAGE
DESCRIPTION TABLE.
041. SPECIFY SLOT OPENINGS (W/ 2' CONCRETE GUTTERS) ON BOTH
THE NORTH AND SOUTH SIDES OF DI-6 STRUCTURES 13, 24B,
26B, AND 28B.
042. SPECIFY SLOT OPENINGS (W/ 2' CONCRETE GUTTERS) ON BOTH
THE EAST AND WEST SIDES OF STRUCTURE 11B.
043. CHANGE STRUCTURE 11 TO A DI-1, AND PROVIDE A NOTE IN
BOLD PRINT ON SHEET 3 STATING THAT THE GRATE INLET
OPENING SHALL BE MAINTAINED BY THE HOMEOWNERS'
ASSOCIATION.
044. SPECIFY A "DRAINAGE EASEMENT (PRIVATE)" ENCLOSING
STRUCTURES 11A AND 11B.
045. SPECIFY DI-1 INLETS LOCATED AT THE END OF THE DRIVEWAYS
(OUTSIDE OF THE R/W) BETWEEN LOTS 22/23 AND 26/27, AND
TIE THESE INLETS INTO THE NEAREST STORM STRUCTURES(34
AND 45, RESPECTIVELY). ENCLOSE WITHIN A VARIABLE-WIDTH
DRAINAGE EASEMENT (PRIVATE).
046. RELOCATE STRUCTURES 13, 24B, 26B, AND 28B SUCH THAT
THEY ARE CLOSER TO THE DRIVEWAY STUBS AT EACH
RESPECTIVE LOCATION, AND SPECIFY A TRANSITION FROM THE
DRIVEWAY PAVEMENT DIRECTLY INTO THE GUTTERS FOR THESE
DI-6 STRUCTURES. ENLARGED DETAILS WOULD BE HELPFUL.
047. REVISE THE EASEMENTS ENCLOSING STRUCTURES 24A-B, 26A-B,
AND 28A-B TO "DRAINAGE EASEMENT (PRIVATE)".
048. PROVIDE A NOTE IN BOLD PRINT ON SHEET 3 WHICH STATES
THAT THE HOMEOWNERS' ASSOCIATION SHALL BE RESPONSIBLE
FOR THE MAINTENANCE OF ALL STRUCTURES ENCLOSED WITHIN A
DRAINAGE EASEMENT (PRIVATE).
049. REMOVE THE REAR SLOTS FROM STRUCTURES 39, 45, AND 47,
AS THE SIDEWALK IN THESE LOCATIONS WILL IMPEDE THESE
SLOTS.
050. REVISE THE DRAINAGE DESCRIPTION FOR STRUCTURES E101 AND
E99 TO NOTE DI-3 STRUCTURES INSTEAD OF MH-1.
051. RELOCATE STRUCTURE 3 AND THE SWM/BMP ACCESS ROAD SUCH
THAT THE ACCESS ROAD RUNS BETWEEN LOTS 42/43, WHICH
WILL ELIMINATE THE RPA DISTURBANCE BEHIND LOT 44. NOTE
THAT STRUCTURE 5 MAY NEED TO BE SHIFTED SLIGHTLY, AS
WELL, TO ALLOW FOR THE CG-9 ENTRANCE FOR THE ACCESS
ROAD. THE EASEMENT BETWEEN LOTS 42/43 SHOULD BE
REVISED TO READ "20' SWM/BMP ACCESS AND DRAINAGE
EASEMENT". FURTHER DISCUSSION MAY BE HELPFUL.
052. SPECIFY AN ENDWALL AT THE END OF STRUCTURE 2 IN PLAN
VIEW AND IN THE DRAINAGE DESCRIPTION TABLE. THIS
ENDWALL SHOULD BE NOTED AS A SEPARATE STRUCTURE, WITH
ITS OWN NUMBER.
053. PROVIDE ENLARGED INSETS WHICH SHOWS IN DETAIL THE
GRADING, INSTALLATION OF NEW STORM STRUCTURES AND CURB
& GUTTER, REMOVAL OF EXISTING STRUCTURES, ETC. IN THE
VICINITY OF THE TIE-IN TO THE EXISTING AMBERDALE ROAD
STUB, AND AT THE TIE-IN TO AMBERLEIGH CIRCLE. PROVIDE
GRADING CONTOURS, SPOT ELEVATIONS, FLOW ARROWS, ETC.
WHICH CLEARLY INDICATE THE DIRECTION OF DRAINAGE.
054. PROVIDE THE CROSS-SECTION FOR THE EXISTING DITCH IN
AMBERLEIGH SEC. 3 ADJACENT TO THE EAST OF LOTS 31/32 ON
SHEET 4.
055. SHOW AND LABEL THE 100-YEAR BACKWATER LIMITS AND
ELEVATION AT STRUCTURE E1 ON ALL PLAN SHEETS.
056. PROVIDE A PROFILE FOR THE EXISTING DRIVEWAY TO THE N/F
HULL PROPERTY, STARTING AT THE TIE-IN TO AMBERGROVE
AVENUE AND RUNNING APPROX. 200' BEYOND STRUCTURE E1.
SHOW/LABEL THE PROPERTY LINE, WETLAND LIMITS, 100-YEAR
FP LIMITS, STRUCTURE E1, ETC.
057. PROVIDE A PROFILE OF THE EXISTING DRAINAGEWAY
DOWNSTREAM OF THE SWM/BMP OUTFALL, EXTENDING DOWNSTREAM
OF STRUCTURE E1 AND SHOWING THE N/F HULL DRIVEWAY.
058. SHOW AND LABEL THE WETLANDS LIMITS ON THE E3-MH6
PROFILE ON SHEET 4.
059. SHOW AND LABEL THE STATION/ELEVATION OF THE
INTERSECTION WITH AMBERGROVE CIRCLE ON THE AMBERGROVE
AVENUE PROFILE ON SHEET 5, AND EXTEND THE PROFILE
ACROSS AMBERGROVE CIRCLE.
060. EXTEND THE AMBERGROVE AVENUE PROFILE ACROSS AMBERDALE
DRIVE.
061. IT APPEARS THAT THE 25' LEFT SIDE OFFSET IS MISSING
FROM THE AMBERGROVE AVENUE PROFILE. PLEASE ADDRESS.
062. SHOW AND LABEL STRUCTURES 42 AND 43 ON THE AMBERGROVE
AVENUE PROFILE.
063. SHOW AND LABEL THE PROPERTY LINE ON THE AMBERGROVE
AVENUE PROFILE.
064. SHOW AND LABEL THE PROPOSED BRICK WALL ON ALL
APPLICABLE PROFILES (STR 24-24B, STR 26-26B, STR 28-
28B, STR 14-20).
065. PROVIDE A PROFILE FOR STORM SEWER STRUCTURES 9 TO 11.
066. SHOW ALL SLOT OPENINGS AND 2' CONCRETE GUTTERS ON ALL
DI-6 STRUCTURE PROFILES (STR 11-11B, STR 24-24B, STR
26-26B, STR 28-28B, STR 14-20), AND SHOW SWALE
FLOWLINES TYING INTO THE GUTTERS.
067. SHOW AND LABEL THE PROPOSED 24" CL. I RIPRAP LAYER WITH
FABRIC UNDERLAYMENT AT THE DOWNSTREAM END OF STRUCTURE
35 ON THE PROFILE ON SHEET 5.
068. LABEL STRUCTURE E100A ON THE STR 49-E1 PROFILE ON SHEET
6.
069. SHOW AND LABEL THE 100-YEAR FLOODPLAIN LIMITS ON THE
STR 36-42 PROFILE.
070. SHOW AND LABEL ALL SWM/BMP WATER SURFACE ELEVATIONS ON
THE STR 2-5 PROFILE.
071. SHOW AND LABEL THE LIMITS OF RPA AND WETLANDS ON THE
STR 2-5 PROFILE.
072. SHOW THE SWM/BMP ACCESS ROAD AND ASSOCIATED GRADING ON
THE STR 2-5 PROFILE.
073. ADJUST THE INVERTS OF STRUCTURE 2 (AND 4) SUCH THAT THE
PIPE SPRINGLINE IS SET AT THE NORMAL WSE OF THE
SWM/BMP, ALSO ENSURING THAT THE SWM/BMP NORMAL POOL
ELEVATION DOES NOT CREATE A STANDING WATER CONDITION
WITHIN STORM STRUCTURES WITHIN THE LIMITS OF THE R/W.
074. PROVIDE A PROFILE FOR THE FUTURE ROAD STUB OFF OF
AMBERGROVE AVENUE, EXTENDING ALL THE WAY ACROSS THE
RPA.
075. PROVIDE PROFILES FOR ALL SHARED DRIVEWAYS WHICH WILL
HAVE AN INVERTED CROSS-SECTION DRAINING INTO A DI
STRUCTURE PRIOR TO ENTERING THE R/W. FURTHER
DISCUSSION MAY BE HELPFUL.
076. REVISE THE TITLE OF SHEET 13 TO READ "ONSITE GRADING &
DRAINAGE PLAN".
077. CHANGE THE SCALE OF SHEET 13 TO 1"=30', AS IT IS
CURRENTLY DIFFICULT TO DETERMINE DRAINAGE PATTERNS AT
THE SCALE PROVIDED.
078. DARKEN THE PROPOSED GRADING CONTOURS, AND PROVIDE
ADDITIONAL CONTOUR LABELS ON BOTH PROPOSED AND EXISTING
TOPOGRAPHY.
079. IT APPEARS THAT THERE ARE SEVERAL AREAS (E.G. LOTS 2/5,
7/8, 11/12, 15/16, 20/21, 24/25, 28/29, AND POSSIBLY
OTHERS), WHERE THE GRADING PLAN PROMOTES SURFACE
DRAINAGE DIRECTLY AGAINST THE BUILDING STRUCTURES,
WHICH IS NOT ALLOWABLE AND DOES NOT SATISFY TENTATIVE
CONDITION #7. PLEASE ADDRESS. SWALES WHICH DIRECT
RUNOFF AROUND THE BUILDING FOOTPRINT AND INTO INLETS OR
AN INVERTED DRIVEWAY SECTION MAY BE A SOLUTION.
FURTHER DISCUSSION MAY BE HELPFUL.
080. SHOW THE EXISTING BUILDING, PAVEMENT, ETC. FOR THE
WACHOVIA BANK PROPERTY ON SHEET 13.
081. SHOW AND LABEL THE 100-YEAR BACKWATER AT STRUCTURES E1,
20, 35, AND 51 ON SHEET 13.
082. IT APPEARS THERE ARE SOME MISSING PROPOSED GRADING
CONTOURS TO THE WEST OF LOT 2 ON SHEET 13. PLEASE
ADDRESS.
083. ADD FLOW ARROWS TO ALL SHARED DRIVEWAY SECTIONS WHICH
WILL CARRY COMBINED FLOWS, AND PROVIDE ENLARGED DETAILS
OF THESE AREAS TO INCLUDE GRADING CONTOURS, SPOT
ELEVATIONS, ETC. TO CLEARLY DEPICT CONVEYANCE.
084. CLARIFY THE INCREMENTAL DRAINAGE AREA TO STRUCTURE 11B
ON SHEET 13.
085. IT APPEARS FROM THE TOPOGRAPHY PROVIDED THAT THERE MAY
BE TWO CULVERT PIPES WHICH DRAIN FROM THE MEDIAN OF
HULL STREET ROAD INTO THE FUTURE COMMERCIAL SITE AND
ULTIMATELY INTO THIS SUBDIVISION SECTION. PLEASE
ADDRESS, AND PROVIDE PIPE INFORMATION IN THE PLANS AS
NECESSARY.
086. IT APPEARS THAT THE SLOPES TO THE REAR OF LOTS 33 AND
41 ALONG THE RPA ARE VERY STEEP, AND SHOULD BE REVISED
TO 3:1 OR FLATTER. FURTHER DISCUSSION MAY BE HELPFUL.
087. PROVIDE TYPICAL ROOF LINE/GUTTER DETAILS WHICH SUPPORT
THE DRAINAGE AREAS DEPICTED.
088. PROVIDE FLOW DIRECTION ARROWS ON ALL ROOF DRAINAGE
LINES.
089. IT APPEARS THAT THE 0.16-ACRE INCREMENTAL DRAINAGE AREA
LABEL IN THE VICINITY OF STRUCTURE 36 IS EXTRANEOUS AND
MAY BE REMOVED.
090. REVISE THE ROOF LEADER DETAIL ON SHEET 13 TO DEPICT 6"
PVC PIPES IN LIEU OF 4".
091. LABEL THE OVERLAND AND CHANNEL FLOW SEGMENTS USED FOR
TIME OF CONCENTRATION DETERMINATIONS ON SHEET 14.
092. WHEN COMPUTING THE 100-YEAR FLOWS TO THE SWM/BMP AND
THROUGH THE SITE, THE ULTIMATE DEVELOPMENT SCENARIO
SHOULD BE MODELED, WHICH SHOULD FOLLOW THE APPROVED
LAND USE PLAN FOR THIS AREA, MUCH OF WHICH IS PLANNED
AS "MIXED USE" OR "COMMUNITY MIXED USE". THESE AREAS
SHOULD BE REPRESENTED IN THE CALCULATIONS WITH A RUNOFF
COEFFICIENT CLOSER TO 0.70 AND SHOWN ON SHEET 14 AND 18
AS SUCH. FURTHER DISCUSSION MAY BE NECESSARY.
093. ENLARGE THE DRAINAGE AREA LABELS TO THE SOUTH OF
AMBERDALE ON SHEET 18.
094. IT APPEARS THAT THE C VALUE OF 0.25 USED FOR THE 3.71-
ACRE AREA DRAINING DIRECTLY TO THE SWM/BMP IS LOW.
PLEASE ADDRESS.
095. PROVIDE THE CORRECT STRUCTURE NUMBERS ON THE DI-6
DETAIL ON SHEET 19.
096. PROVIDE A STAMPED/SIGNED CERTIFICATION OF THE DAM
FAILURE ANALYSIS BY A LICENSED PROFESSIONAL ENGINEER.
097. IT APPEARS THAT THE 10-YEAR HGL WILL ESCAPE THE THROAT
(TOP ELEV. MINUS 11") OF DI-6 STRUCTURES 13, WHICH IS
NOT ALLOWABLE. PLEASE ADDRESS.
098. IT IS UNCLEAR HOW THE OUTLET WSE USED IN THE HGL
CALCULATIONS AT STRUCTURE 47 (203.57') WAS DETERMINED.
PLEASE ADDRESS.
099. IT APPEARS THAT 100-YEAR PROPERTY PROTECTION HAS NOT
BEEN PROVIDED FOR THE OVERTOPPING OF STRUCTURES 13
DURING THE 100-YEAR EVENT. PLEASE ADDRESS. NOTE THAT
25' SETBACKS WILL APPLY TO 100-YEAR BACKWATER LIMITS
WHICH EXTEND BEYOND THE LIMITS OF THE DRAINAGE
EASEMENT. FURTHER DISCUSSION MAY BE HELPFUL.
100. PROVIDE 100-YEAR HGL SURCHARGE CALCULATIONS FOR THE
ESCAPES FROM STRUCTURES 7, 9, 11, 22, 24, 26, AND 28
WHICH END UP AT STRUCTURES 17, 30, OR 34.
101. PROVIDE INFORMATION FOR STRUCTURE 19 IN THE 100-YEAR
HGL CALCS. IF THE 100-YEAR HGL AT THIS STRUCTURE
EXCEEDS THE CURRENT 100-YEAR BACKWATER AT STRUCTURE 20
(203.48'), THEN REVISE THE BACKWATER LIMITS/ELEVATION
ACCORDINGLY.
102. IN THE HY-8 CULVERT ANALYSIS OF STRUCTURE E1, THE
BARREL DIAMETER HAS BEEN LISTED AS 24 FEET, NOT 24
INCHES. IT HAS ALSO BEEN SHOWN AS CORRUGATED ALUMINUM
IN THE ANALYSIS, BUT IS SPECIFIED AS HDPE IN ALL OTHER
LOCATIONS IN THE PLAN. PLEASE ADDRESS.
103. THE POST-DEVELOPMENT FLOW TO STRUCTURE E1 IN THE HY-8
ANALYSIS IS NOTED AS 32.7 CFS, BUT THE ROUTING SHOWS A
100-YEAR PEAK OF 93.74. PLEASE ADDRESS.
104. PROVIDE A PRE-DEVELOPMENT DRAINAGE AREA MAP WHICH
CORRELATES WITH THE VALUES USED IN THE ROUTING.
105. IT APPEARS THAT THE FLOWS TO EXISTING CULVERT E1 HAVE
BEEN ROUTED TO ESTABLISH THE 100-YEAR ELEVATION, IN
LIEU OF THE STANDARD VDOT CULVERT CALCULATION. ROUTING
THIS CULVERT WILL REQUIRE THAT BACKWATER EASEMENTS BE
RECORDED ON- AND OFF-SITE TO GUARANTEE THE ROUTED
STORAGE VOLUME, WHICH MAY NOT BE ACHIEVABLE. IT ALSO
APPEARS THAT THE EXISTING DRIVEWAY TO THE N/F HULL
PROPERTY WILL BE OVERTOPPED BASED ON THE 100-YEAR PEAKS
NOTED IN THE CALCULATIONS, WHICH DOES NOT SATISFY
ZONING CONDITION #7 (TENTATIVE NOTE #1). FURTHER
DISCUSSION MAY BE NECESSARY.
106. THERE APPEARS TO BE A DISCREPANCY BETWEEN THE AREAS AND
C-VALUES USED FOR THE VARIOUS SUBCATCHMENTS IN THE
ROUTING CALCULATIONS, AND THE SAME AREAS AND C-VALUES
NOTED IN THE PLAN SET (FOR EXAMPLE, "4S: SWM/BMP POST"
IS TAKEN AT 76.96 ACRES IN THE ROUTING, BUT A TOTAL OF
81.23 ACRES IS SHOWN TO THE SWM/BMP BASIN IN THE
PLANS). PLEASE CLARIFY.
107. PROVIDE A PRE-POST ANALYSIS FOR THE ON-SITE AREA WHICH
BYPASSES THE SWM/BMP, PER TENTATIVE CONDITION #20
(ZONING CONDITION #20).
108. PROVIDE AT LEAST ONE BENCHMARK WITHIN THE SECTION
LIMITS, AND SHOW ON SHEET 3.
109. ADD TENTATIVE CONDITION #19 AND TENTATIVE NOTE #2 IN
BOLD PRINT ON THE COVER SHEET.
110. PROVIDE A WRITTEN RESPONSE IN THE MARGIN OF A COPY OF
THESE REVIEW COMMENTS WITH YOUR NEXT PLAN SUBMITTAL.
DESIGN, DETAIL AND CALCULATIONS REQUIRED BY THE ABOVE
COMMENTS SHALL BE SUBJECT TO FURTHER REVIEW.
---- END OF ENV. ENG. COMMENTS ----
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