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Subdivision Review Comments
All Subdivision Review Comments for Case # 18CP0014




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CASE NO: 18CP0014 STATUS: PENDING APPROVAL
PROJECT NAME: VALHALLA AT MAG GREE - LAST INTERNET UPDATE: 11/22/17
SUBMITTAL TYPE: CONSTRUCTION PLAN
DEPARTMENT...REV..ROUTED..RESPONSE..STATUS....DATE...RVW..PHONE
ENVIR.ENGR.-: 01 11/09/17 12/06/17 ******** 09/22/17 GT 706-2061
FIRE DEPT.--: 01 11/09/17 12/06/17 COMPLETE 11/16/17 AWB 717-6167
PLANNING----: 01 11/09/17 12/06/17 ******** ********
TRANSPORT.--: 01 11/09/17 12/06/17 ******** 09/26/17 SES 751-4912
UTIL.PLAN.--: 01 11/09/17 12/06/17 ******** ********
UTILITIES---: 01 11/09/17 12/06/17 ******** 09/27/17
UTIL.R.O.W.-: 01 11/09/17 12/06/17 ******** ********
VDOT--------: 01 11/09/17 12/06/17 ******** ********
REVIEW DEPARTMENT: UTILITIES DEPARTMENT
REVIEWER/PHONE # : ANNE URENDA, P.E./(804)748-1343
NAME OF PLAN : VALHALLA AT MAGNOLIA GREEN - SECTION 2
ADDRESS : MAGNOLIA GREEN PARKWAY AND DESERT CANDLE
SUBMISSION DATE : 8/31/17
PLAN DATED : 8/18/17
REVIEW DATE : 9/20/17
SITE PLAN NO. : 18CP0014
COMMENTS : 1ST REVIEW-NOT APPROVED
TABLE REVIEW : NO
1. COUNTY PROJECT NUMBER 17-0177 SHALL BE PLACED ON THE
LOWER RIGHT HAND CORNER OF EACH SHEET.
*
INDICATE ON SHEET C3.1 THAT LOTS 21 AND 22 WILL NEED
PRVS.
*
3. SHOW THE LOCATION OF THE IRRIGATION METER AND BACKFLOW
PREVENTER. THE METER SHOULD BE LOCATED IN A PUBLIC
EASEMENT.
*
4. SUBMIT AN 8.5" X 11" HARD COPY OR ELECTRONIC COPY OF THE
METER SIZING FORM WITH THE NEXT SUBMISSION. FORM SHOULD
INCLUDE A SIGNATURE. UPDATE THE COUNTY PROJECT NUMBER AND
FILL IN GPIN.
THERE IS A 2" FLUSHING HYDRANT THAT NEEDS TO BE REMOVED
FROM THE EXISTING WATERLINE WHERE THE 90-DEGREE BEND IS
BEING INSTALLED. PLEASE ADD TO NOTE.
*
6. DARKEN THE TEXT NEAR MAGNOLIA GREEN PARKWAY STA 71+00
WHICH STATES THE 8" GATE VALVE NEEDS TO BE CLOSED DURING
TIE-IN.
7. THE SANITARY SEWER HYDRAULIC ANALYSIS FOR THE VALHALLA
SEWERSHED HAS BEEN REVIEWED BY CHESTERFIELD UTILITIES AND
IT HAS BEEN DETERMINED THAT AN 8-INCH DIAMETER SANITARY
SEWER CAN HANDLE ALL FLOWS IN THE 33 ACRE SEWERSHED. ALL
10-INCH SANITARY SEWER LINES CAN BE DOWNSIZED TO 8-INCHES.
UPDATE THE PIPE TABLE ACCORDINGLY.
8. EXTEND THE SANITARY SEWER BETWEEN MH 13 AND MH 24
APPROXIMATELY 90 FEET TO THE BACK OF THE PROPERTY. UPDATE
THE SANITARY SEWER SCHEDULE AND PIPE TABLE ACCORDINGLY.
*
9. ADD A 16-FOOT SANITARY SEWER EASEMENT PARALLEL TO THE
CHESTERFIELD COUNTY PARCEL FROM THE RELOCATED MH 24 TO THE
ATKINSON PROPERTY LINE.
*
10. ON LOTS 6, 10, AND 42, CHANGE THE LOCATIONS OF WHERE
THE WATER SERVICES CONNECT TO THE WATERLINE. THEY SHOULD
NOT CONNECT AT A BEND.
ON LOTS 39 AND 40, ADJUST THE WATER SERVICE CONNECTION
LOCATIONS SO THEY ARE PERPENDICULAR TO THE WATERLINE.
*
12. ON LOT 39, SHIFT THE SEWER LATERAL OUT OF THE FIRE
HYDRANT EASEMENT AND TOWARDS THE WATER SERVICE.
*
13. ON LOT 5, CHANGE THE ORIENTATION OF THE SEWER LATERAL
SO THAT THERE IS 10 FEET OF SEPARATION FROM THE WATER
SERVICE.
*
14. ON SHEET C3.1, ADJUST THE LOCATION OF ANY TEXT THAT
OBSCURES LOT NUMBERS, WATER METERS, SEWER LATERALS, SEWER
MANHOLES, ETC.
15. ADD A NOTE STATING THAT ALL SALVAGEABLE PUBLIC WATER
AND SEWER APPURTENANCES ARE TO BE RETURNED TO THE
CHESTERFIELD DEPARTMENT OF UTILITIES AT THE DISCRETION OF
THE UTILITIES INSPECTOR.
*
16. CALCULATE THE REQUIRED LENGTH OF RESTRAINT FOR ALL
WATERLINE VERTICAL AND HORIZONTAL FITTINGS, REDUCERS, AND
DEAD-ENDS. PROVIDE PIPE RESTRAINT CALCULATIONS FOR ALL
RESTRAINED PIPE FITTINGS AND SHOW CALCULATED DISTANCES ON
THE PROFILES. CALCULATIONS SHOULD USE A TEST PRESSURE OF
150 PSI AND A SAFETY FACTOR OF 1.5.
17. ON THE DESERT CANDLE DRIVE PROFILE, THE MINIMUM
ALLOWABLE VERTICAL PIPE DEFLECTION IS NOT MET ON ONE OR
BOTH SIDES WHERE THE WATERLINE CROSSES UNDER THE STORM
CULVERTS. PIPE FITTINGS WILL BE NEEDED AT THESE LOCATIONS
TO LOWER THE PIPE OR THE PROFILE SMOOTHED OUT TO REFLECT THE
MINIMUM ALLOWABLE PIPE DEFLECTION. NEAR STATION 10+50
WHERE THE PROPOSED WATERLINE IS CONNECTED TO THE EXISTING
WATERLINE, THE PROPOSED 90-DEGREE BEND CAN BE ROTATED TO
LOWER THE WATERLINE.
18. ON THE DESERT CANDLE DRIVE PROFILE, CHANGE THE PIPE
SLOPE BETWEEN MANHOLES 21 AND 23. THE PIPE CAN BE
SHALLOWER UNLESS THERE'S A REASON TO HAVE MH 22 SO DEEP.
UPDATE THE PIPE TABLE ACCORDINGLY.
19. ON THE DESERT CANDLE WAY PROFILE, THE MINIMUM ALLOWABLE
VERTICAL PIPE DEFLECTION IS NOT MET ON ONE OR BOTH SIDES
WHERE THE WATERLINE CROSSES UNDER THE STORM CULVERTS. PIPE
FITTINGS WILL BE NEEDED AT THESE LOCATIONS TO LOWER THE
PIPE OR THE PROFILE SMOOTHED OUT TO REFLECT THE MINIMUM
ALLOWABLE PIPE DEFLECTION. NEAR STATION 10+50 WHERE THE
PROPOSED WATERLINE IS CONNECTED TO THE EXISTING WATERLINE,
THE PROPOSED 45-DEGREE BENDS CAN BE ROTATED TO LOWER THE
WATERLINE. ALSO, DARKEN THE NOTE ABOUT REMOVING THE
EXISTING 8-INCH PLUG.
*
20. ADD A NOTE TO THE PROFILE ON SHEET C5.2 INDICATING ALL
MH RIMS ALONG THE OFFSITE SANITARY SEWER MUST BE INSTALLED
AT 12" ABOVE GRADE.
*
21. ON THE 90-DEGREE BEND TO EXISTING MG PARKWAY TIE IN
PROFILE, ADD A 90-DEGREE BEND WHERE THE NEW WATERLINE
CONNECTS TO THE EXISTING WATERLINE AND NOTE THAT IT IS TO
BE RESTRAINED. ALSO, THE NOTE ABOUT REMOVING THE EXISTING
PLUG NEEDS TO POINT TO THE PLUG AND NOT THE TEE.
*
22. THERE IS A DISCREPANCY ON THE ELEVATION OF THE
WATERLINE WHERE THE NEW 90-DEGREE BEND IS BEING INSTALLED
AT THE END OF DESERT CANDLE DRIVE. THE DESERT CANDLE DRIVE
PROFILE SHOWS THE WATERLINE CENTERLINE AT 266.3 WHEREAS THE
90-DEGREE BEND TO EXISTING MG PARKWAY TIE IN PROFILE SHOWS
THE WATERLINE CENTERLINE AT 267.5. MAKE NECESSARY CHANGES
SO THE WATERLINE ELEVATIONS MATCH IN BOTH PROFILES.
*
23. UPDATE THE MATERIAL QUANTITIES ON THE COVER SHEET TO
REFLECT ANY CHANGES MADE TO PLANS. ADD "6 FUTURE" IN
PARENTHESES FOR THE ¾" WATER SERVICE LINES AND 6" PVC
LATERALS. I ONLY COUNTED 52 WATER SERVICES. ADD 8" DUCTILE
IRON PIPE TO SEWER QUANTITIES.
REQUEST A NEW START POINT FLOW TEST SINCE THE ONE ON
THE PLANS IS OLDER THAN 6 MONTHS. PLEASE CONTACT TERRY
MAPLES AT 804-751-4435.
*
25. ADD A 3RD FIRE HYDRANT TO THE JUNCTION NODE MAP AND
RESIDUAL PRESSURE RESULTS TABLE.
*
26. PRIOR TO RELEASE OF THE PROJECT 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 THE
UTILITIES DEPARTMENT.
27. THE OWNER SHALL BE REQUIRED TO ENTER INTO A COUNTY
UTILITIES CONTRACT PRIOR TO THE START OF CONSTRUCTION.
PRIOR TO THE PREPARATION OF THE UTILITIES CONTRACT,
UTILITIES MUST BE IN RECEIPT OF THE "ACCEPTED" BID PROPOSAL
BETWEEN THE DEVELOPER AND THE COUNTY-APPROVED UTILITIES
CONTRACTOR AS WELL AS THE PROJECT'S INFORMATIONAL SHEET
FOUND ON THE "DEVELOPER'S CHECKLIST". PLEASE SEND THESE
DOCUMENTS TO THE ATTENTION OF ANNE URENDA
(URENDAA@CHESTERFIELD.GOV). THE BID PROPOSAL MUST BE BASED
ON THE APPROVED SITE PLAN. BE ADVISED THAT IF THE SITE PLAN
IS REVISED AND REAPPROVED SUBSEQUENT TO THE PREPARATION OR
RECORDATION OF THE UTILITIES CONTRACT, THE BID PROPOSAL
SHALL BE REVISED ACCORDINGLY AND A REVISED UTILITIES
CONTRACT MAY BE NECESSARY.
28. PROVIDE ONE SET OF PLANS TO UTILITIES FOR NEXT
SUBMITTAL.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
REVIEW DEPARTMENT: CHESTERFIELD TRANSPORTATION DEPARTMENT
REVIEWER/PHONE#: STEVEN E. SIMONSON, P.E. (804)748-1037
NAME OF PLAN: VALHALLA AT MAGNOLIA GREEN, SECTION 2
CASE NUMBER: 18CP0014
LATEST PLAN DATE: 08/18/2017
DEPT. REC'D. DATE: 08/31/2017
SUBMITTAL NUMBER: ONE
REVIEW DATE: 09/25/2017
RECOMMENDATION: APPROVED
TABLE REVIEW: YES
.
REVIEW DEPARTMENT: FIRE
REVIEWER/PHONE#: ANTHONY BATTEN / 717-6167
EMAIL: BATTENA@CHESTERFIELD.GOV
NAME OF PLAN: VALHALLA AT MAGNOLIA GREEN
SECTION 2
PLAN NUMBER: 18CP0014
LATEST PLAN DATE: 8/18/17
DEPT. REC'D. DATE: 9/1/17
SUBMITTAL NUMBER: 1ST REVIEW
REVIEW DATE: 9/5/17
RECOMMENDATION: APPROVED
TABLE REVIEW: YES
COMMENTS:
1. THE PLAN IS APPROVED AS SUBMITTED.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
REVIEW DEPARTMENT: FIRE
REVIEWER/PHONE#: ANTHONY BATTEN / 717-6167
EMAIL: BATTENA@CHESTERFIELD.GOV
NAME OF PLAN: VALHALLA AT MAGNOLIA GREEN
SECTION 2
PLAN NUMBER: 18CP0014
LATEST PLAN DATE: 11/8/17
DEPT. REC'D. DATE: 11/16/17
SUBMITTAL NUMBER: 2ND REVIEW
REVIEW DATE: 11/16/17
RECOMMENDATION: APPROVED
TABLE REVIEW: YES
COMMENTS:
1. THE PLAN IS APPROVED AS SUBMITTED.
============================================================
============================================================
.
REVIEW DEPARTMENT : ENVIRONMENTAL ENGINEERING
REVIEWER/PHONE # : GUOPING TANG / 796-7103
NAME OF PLAN : VALHALLA @ MAGNOLIA GREEN - SECTION 2
SITE PLAN NO. : 18CP0014
LATEST PLAN DATE : 08/18/17
DEPT. REC'D DATE : 08/31/17
SUBMITTAL NUMBER : 1
REVIEW DATE : 09/22/17
RECOMMENDATION : REVISIONS REQUESTED
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 APPROVED CONSTRUCTION
PLANS.
.
002. THIS OFFICE RECOGNIZES THAT THE 10-YEAR PRE/10-YEAR
POST REQUIREMENTS FOR FLOOD PROTECTION MAY BE ADDRESSED
BY DISCHARGING INTO A 100-YEAR FLOODPLAIN.
.
003. NOTE THAT EE CONFIRMS WITH TAMMY EBNER GIS ANALYST FOR
THE USE OF DESERT CANDLE WAY AND DESERT CANDLE DRIVE
FOR THE TWO THROUGH ROADS.
.
004. PLEASE ESTABLISH 100 YEAR FLOODPLAIN IN THE WETLAND/
NATURAL DRAINAGE WAY SOUTHWEST OF THE SITE (SHOW 100 Y
EAR FLOOD PLAIN WITH SECTION LOCATIONS AND ELEVATIONS
ALONG THE WETLAND DRAINAGE WAY BEHIND LOTS 38/39 TO
EXISTING CULVERT UNDER MAGNOLIA GREEN PARKWAY.)
.
005. PLEASE OBTAIN AN EXCEPTION FROM VDOT OR ADD A TEMPORARY
TURNAROUND AT THE EXTENSION OF DESERT CANDLE DRIVE INTO
SECTION 1 AS THE EXTENSION EXCEEDS 150'.
.
006. ON THE COVER SHEET, PLEASE
.
A) SHOW TOTAL DISTURBED ACREAGE (9.32 AC?),
.
B) CORRECT THAT THERE IS ONE (NOT TWO) DRY POND IN THE
CBPA COMPLIANCE NOTE (SHEET C7.0 AS WELL),
.
C) ADD TENTATIVE CONDITION #10,
.
D) UPDATE THE RETAINING WALL NOTE ON THE LOW LEFT.
.
.
-------- EROSION CONTROL ----------
.
007. PLEASE ADD INLET PROTECTIONS FOR EXISTING STRUCTURES
E2-27, E2-29 AND E1-49 ON SHEET C2.0, E2-61, E2-63 AND
E1-49 ON SHEET C2.1.
.
008. PLEASE SPECIFY A CIP FOR EXISTING CULVERT C(4A) ON
SHEETS C2.0 AND C2.1. CORRECT TYPO C(4A) [NOT C(4B)]
ON ALL APPLICABLE SHEETS.
.
009. PLEASE SPECIFY CHECK DAMS ALONG THE DIVERSION IN THE
WEST ON SHEET C2.0.
.
010. PLEASE ADD SILT FENCE AT THE TOE OF THE CUT SLOPE NORTH
OF THE CROSSING OF DESERT CANDLE DRIVE WITH MAGNOLIA
GREEN PARKWAY (EAST OF SB1) ON SHEET C2.1.
.
011. PLEASE ADJUST THE TP/CLR/DISTURBANCE LIMITS BEHIND LOTS
6-15 ON SHEET C2.1 TO BE SIMILAR TO THAT ON SHEET C2.0,
AND KEEP THE SSF.
.
012. PLEASE CORRECT "PRIOR TO SUBDIVISION PLAT
RECORDATION " (NOT ISSUANCE OF A BUILDING PERMIT) IN
ITEM 2 UNDER SEQUENCE OF CONSTRUCTION PHASE 1 ON SHEET
C2.2.
.
013. PLEASE CORRECT THE ADJACENT AREAS SECTION OF THE
EROSION CONTROL NARRATIVE ON SHEET C2.2. FOR EXAMPLE,
"THE PROJECT IS IN THE NORTHWEST CORNER OF THE
INTERSECTION OF MEMORIAL TOURNAMENT DRIVE AND MAGNOLIA
GREEN PARKWAY", THE DIRECTIONS OF THE ADJACENT AREAS
(E.G., NORTHEAST RATHER THAN EAST BY MAGNOLIA GREEN
PARKWAY, WEST TO SOUTHWEST RATHER THAN NORTH BY
UNDEVELOPED LAND, ETC.).
.
014. PLEASE INCLUDE WETLANDS IN THE CRITICAL AREAS OF THE
EROSION CONTROL NARRATIVE ON SHEET C22.
.
015. WOULD YOU LIKE TO INCLUDE SMART FENCE DETAILS AS AN
ALTERNATIVE TO SUPER SILT FENCE ON SHEET C2.3? THEN YOU
WILL NOT NEED A VARIANCE REQUEST IF SMART FENCE IS
USED IN THE FIELD.
.
016. PLEASE CORRECT THE UPDTREAM TOE OF DAM ELEVATION IN
ITEM 11 ON SHEET C2.4.
.
017. PLEASE UPDATE THE ESC BOND ESTIMATE BY ADDING SEDIMENT
BASIN, CHECK DAMS, AND ADDITIONAL INLET PROTECTIONS,
ETC.
.
018. PRIOR TO CONSTRUCTION PLAN APPROVAL, PLEASE PROVIDE
SIGNED NOTIFICATIONS SENT VIA CERTIFIED MAIL FROM THE
ADJACENT OWNERS
N/F ATKINSON AT 18200 HULL STREET RD,
INCLUDE AN 8.5 X 11 COPY OF THE PLAN OF THE PROPOSED
CONSTRUCTION ACTIVITY;
.
019. PRIOR TO A LAND DISTURBANCE PERMIT ISSUANCE, PLEASE
PROVIDE
.
A) WETLANDS DOCUMENTATION FROM COE/DEQ,
.
B) VSMP REGISTRATION STATEMENT AND FEES,
.
C) A VDOT LAND USE PERMIT,
.
D) POSTED EC BOND;
.
E) A SWPPP BOOKLET IN A 3-RING BINDER,
.
F) FLAGGING AROUND SENSITIVE AREAS (BUFFER, WOUS,
WETLAND, OFFSITE PROPERTY, ETC.) ALONG WITH THE
INSTALLATION OF SAFETY FENCE ALONG THE RPA;
.
G) A COPY OF THE AUTOCAD FILES SUBMITTED TO CAROLE
CLIBORNE OF THE ENVIRONMENTAL ENGINEERING
DEPARTMENT.
THE FILES 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 FILES MAY BE SUBMITTED
ON A CD, DVD, OR VIA EMAIL AND MUST BE CLEARLY
LABELED WITH THE SUBDIVISION NAME AND SECTION,
SUBDIVISION PLAN NUMBER, ENGINEERING FIRM AND
PREPARER'S NAME, AND PHONE NUMBER.
THE FILE MUST CONTAIN THE FOLLOWING, EACH CLEARLY
LABELLED IN SEPARATE LAYERS:
EDGES OF ROADS TO INCLUDE CURB AND GUTTER,
EDGES OF SIDEWALKS, AND
ALL OF STORM SEWER AND INLETS;
.
H) 4 SETS OF FULL-SIZE PLANS FOR STAMPED APPROVAL, AND
1 REDUCED SIZE PLAN 11 BY 17 FOR SWPPP
.
-------- ROAD AND DRAINAGE --------
.
020. PLEASE ADD A NOTE STATING THAT THE HDPE ROOF DRAINAGE
SYSTEM WILL BE OWNED AND MAINTAINED BY HOA ON SHEET
C3.0 AND/OR SHEET C8.2.
.
021. AS THE HDPE ROOF DRAINAGE SYSTEM WILL DRAIN TO THE
BMPS, PLEASE ENCLOSE THE HDPE BETWEEN LOTS 39 AND 46 IN
A DRAINAGE EASEMENT (PRIVATE) ON SHEET C3.0, AND
REFLECT CHANGES ON APPLICABLE SHEETS.
.
022. PLEASE ADD "FOR VDOT MAINTENANCE" TO THE VARIABLE WIDTH
DRAINAGE EASEMENTS FOR PIPE 1-16 AND 1-20. REFLECT
CHANGES ON ALL APPLICABLE SHEETS.
.
023. PLEASE ADD A "VARIABLE WIDTH DRAINAGE EASEMENT FOR VDOT
MAINTENANCE FOR STR# 1-64" ON SHEET C3.0, REFLECT
CHANGES ON ALL APPLICABLE SHEETS.
.
024. PLEASE TRIM THE 100 YEAR BACKWATER LIMIT BELOW THE
PLUNGING POOL AND OUTLET FROM THE BMP (SHEETS C3.1, ET
AL., C7.1).
.
025. PLEASE CHANGE THE GRASS DITCH FROM 3:1 TO 5:1 ABOVE
PIPES 1-9 TO N27 (SHEETS C5.3, SHEET C8.2), AND LABEL
THIS SWALE AND THE 5:1 GRASS SWALE BETWEEN PIPE 1-3 AND
N21 ON SHEET C3.0.
.
026. PLEASE REPLACE STR# 1 ES-1 WITH A HEADWALL AS REQUIRED
FOR PIPES 30" OR LARGER (SHEET 3.0).
.
027. PLEASE LABEL THE SIDE YARD SWALES ON SHEET C3.0.
.
028. PLEASE ADD ARROWS TO SHOW THE FLOW DIRECTION IN THE
NATURAL DRAINAGE WAY ON THE WEST SIDE OF THE SITE, AND
IN GUTTERS ON DESERT CANDLE DRIVE AND DESERT CANDLE
WAY (E.G., SHEET 3.0).
.
029. PLEASE ADJUST THE GRADING BEHIND LOTS 1 TO 18 TO
MINIMIZE CROSS LOT DRAINAGE ON SHEETS C4.0 AND REFLECT
THE CHANGES ON ALL APPLICABLE SHEETS.
.
030. PLEASE SHOW THE ROAD SAG ELEVATION AROUND THE NORTH END
OF MAGNOLIA GREEN PARKWAY ON SHEET C4.0.
.
031. PLEASE SHOW THE LEGENDS, E.G., FOR THE RIGHT, LEFT,
AND CENTERLINES, ON SHEET C5.0 AND C5.1.
.
032. PLEASE SHOW STRUCTURES F1-68 AND F1-69 (INCLUDING IN
THE STRUCTURE SCHEDULES), AND ASSOCIATED THE DRAINAGE
AREAS ON APPLICABLE SHEETS.
.
033. THE SLOPE OF THE DITCH BELOW STRUCTURES 1-31 AND 1-29
IS SO STEEP (20 TO 30%) THAT THE 2 YEAR STORM VELOCITY
EXCEEDS 3.5 FPS PERMISSIBLE VELOCITY LIMIT FOR GRASS
CHANNEL EVEN FOR A 5:1 (PROPOSED 3:1) SWALE. PLEASE
ADDRESS (FLATTEN THE SLOPE, THIS WILL HELP THE POSITIVE
DRAINAGE FOR THE FLAT PART OF THE SWALE, SHEET C5.3).
.
034. PLEASE CONSISTENTLY LABEL THE EXISTING DRAINAGE
STRUCTURES (WITH OR WITHOUT E). FOR EXAMPLE, 1-45 TO 1-
53, 1-59, 2-13 TO 2-31, AND C(4A) ON SHEET C3.0, SOME
STRUCTURES ON SHEET C6.0.
.
035. IT APPEARS THAT THE BENDING ANGLE FOR INLET 1-9 SHOULD
BE LESS THAN 90 (RATHER THAN 92.83), AND THE BENDING
COEFFICIENT APPEARS SMALL. PLEASE DOUBLE CHECK IT ON
HGL CALCULATIONS ON SHEET C6.1.
.
-------------- CBPA ---------------
.
036. SINCE THE BMP EASEMENT SHOULD BE 25' AWAY FROM THE TOE
OF THE FILL ON THE WEST OF THE BMP, PLEASE SHIFT THE
BMP EASEMENT ON THE WEST TO COINCIDE WITH THE SANITARY
EASEMENT (NO NEED TO OVERLAP WITH THE SANITARY
EASEMENT). IN ADDITION, ENCLOSE THE PLUNGE POOL IN THE
BMP EASEMENT. ACCORDINGLY, PLEASE SHIFT THE FENCE TO BE
ALONG WITH THE BMP EASEMENT, BUT NOT ENCLOSE THE PLUNGE
POOL. INSTEAD, SPECIFY A 16' GATE TO ACCESS THE PLUNGE
POOL.
.
037. PLEASE REMOVE VALHALLA AT MAGNOLIA GREEN TENTATIVE IN
THE OVERALL CBPA WATER QUALITY COMPLIANCE CHART PENDING
APPROVAL/UNDER DESIGN ON SHEET C7.0.
.
038. PLEASE SHOW THE VEGETATIVE PERIMETER YARD SETBACK
AROUND LOT 21 ON SHEET C7.1 AND APPLICABLE SHEETS.
.
039. THE SHALLOW MARSH (SHADED AREA) SHOULD BE LIMITED TO
CONTOUR 262 (SHEET C7.1)?
.
040. ENVIRONMENTAL ENGINEERING REFERENCE MANUAL SPECIFIES
THAT THE DETENTION VOLUME IS NOT INCLUSIVE OF THE
SHALLOW MARSH, THE DESIGN APPEARS TO INCLUDE THE VOLUME
OF THE SHALLOW MARSH. PLEASE ADDRESS.
.
041. PLEASE SHOW THE REQUIRED STORAGE VOLUMES FOR WATER
QUALITY AND WATER QUANTITY ON THE PROFILE VIEW OF
SWM/BMP 1 ON SHEET 7.1.
.
042. AS A REMINDER, PRIOR TO SUBDIVISION PLAT RECORDATION, A
SWM/BMP MAINTENANCE FEE OF $100 PER LOT MUST BE
RECEIVED.
.
043. PLEASE 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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