HomeMy WebLinkAboutWPO200500072 Review Comments Erosion Control Plan 2005-09-13 COUNTY OF ALBEMARLE Engineering Plan Review Comments
Department of Community Development
Current Development Group F >' -
Project: Hollymead Town Center, Area C, Block 5, SDP200500095, WP0200500072.
Plan preparer: Timothy Miller (fax 984 -8863)
Owner or rep.: Rivanna Engineering
Plan received date: 14 September 2005 (
Date of comments: 6 October 2005 1I )
Review Engineer: Steven Snell
A. Road and drainage plan: 'N�4/' C`i4 / 414 .S1-1- 1
1. Road plans must be approved before final site plan approval.
2. Please supply the County with a written maintenance agreement for the proposed private roads
proposed on this site
3. All necessary off site easements must be submitted for review.
B. Stormwater management plan:
1. Please provide a copy the stormwater management facilities maintenance agreement for Hollymead
Town Center Stormwater Management Facility 2.
2. No plan needed. It has been stated by the design engineer that Hollymead Town Center
Stormwater Management Facility 2 will provide water detention and quality for this site.
C. Erosion and sediment control plan:
A mass grading plan for this section of Hollymead Town Center has been submitted to the County. This
Erosion Control Plan cannot be reviewed or approved until the mass grading plan is finalized. Please
contact Kenny Thacker for any questions pertaining to this issue. Questions pertaining to the approval of
the mass grading plan may be directed to Glenn Brooks.
Attachment: (none)
Copy: file SDP - 2005 -0095, WPO- 2005 -00072
twmong u
tvi
COUNTY OF ALBEMARLE Engineering Plan Review Comments
Department of Community Development ` Current Development Group
Project: Hollymead Town Center, Area C, Block 5, SDP200500095,
WP0200500072.
Plan preparer: David Jensen W. W. Associates (fax 984 -2700)
Owner or rep.: C. W. Hurt (fax 296 -3510)
Plan received date: 10 February 2006
Date of comments: 28 March 2006
Review Engineer: Mark Chambers
A. Road and drainage plan:
1. We would prefer the road plan be submitted as a separate package including sheets relevant to the
road plan only.
2. Please show the location of all traffic and road name signs on the road plans (14 -423, County
Code Chapter7, Article II).
3. Please provide edge of pavement /face of curb radii for all horizontal curves associated with the
road ways, parking and alley (DSM905.D.3 &4, 14- 512.D.
4. The K value for the Sag in Laurel Park Lane does not meet the minimum standard of 30. Please
correct this condition (VDOT Road Design Manual, App. C Table C -1 -3).
5. Please show the storm pipe and other utility crossings in the road profiles (DSM905.E.5).
6. Please provide cross drains and under drains at all sags and cut and fill transitions (DSM
905.E.6).
7. Laurel Park Lane does not meet the minimum pavement width requirement of 36'. Please correct
this condition (VDOT Design Manual 24 VAC 30 -90 -380).
8. Please label Laurel Park Lane as a private road.
9. Please provide and label the access isle /ingress egress easement for Laurel Park Lane.
10. Please continue the access isle /ingress egress easement along the entire length of Grand Forks
Blvd.
11. Please include a road plan for Grand Forks Plaza, include all required information and design
calculations.
12. Please include 4" of 21A under the sidewalk in the Laurel Park Lane Cross section.
13. Please provide a cross section of the Alley (DSM604.B, 14- 410.D).
14. Please provide a name for the public road on the north side of the site. In addition please provide
evidence of VDOT and the county approval for the road, or provide road plans for review, or
remove it from the plan.
15. All roads necessary for access to the site must be built or bonded before final site plan approval.
16. VDOT approval is required for the public roads and entrances.
17. Please label all curb types being proposed.
18. Please provide inlet comps for existing structures ST -61 and ST -62, there can be no carry over
into Timberwood Blvd. (DSM905.E.3.b).
19. Please provide a check storm using 6.5 inches per hour for inlets D -2, D -1, D -7 (DSM909.1.A,
505.G.1)
20. Please provide overland relief for inlet D -1 that does not direct runoff to the corner of the
NNW NIN•0
Engineering Plan Review Comments
Page 2 of 3
structure on lot 16.
21. Please specify VDOT, IS -1 inlet shaping for the storm drainage system (DSM 505.E.9).
22. Please provide a drainage area map for structure D -6.
B. Site plan: (SDP200500095)
23. Please show all roof drains attaching to the stormwater system.
24. Please provide sight distance for the entrances of Grand Forks Blvd and the Alley (VDOT Road
Manual, DSM CD -15).
25. The standard 20' drainage easement is not adequate for storm structure D -3 and the 18' pipe
where the system is in excess of 8' below grade. Please correct this condition. (See DSM
1101.B.bullet 3)
26. Please provide a drainage summary table (18- 32.6.6.d.4 &5, DSM909.1.C).
C. Stormwater management plan:
23. Please provide a copy the stormwater management facilities maintenance agreement for
Hollymead Town Center Stormwater Management Facility 2.
24. No plan needed. It has been stated by the design engineer that Hollymead Town Center
Stormwater Management Facility 2 will provide water detention and quality for this site.
D. Erosion and sediment control plan:
Narrative:
25. Please add a description of existing site conditions to the narrative, i.e. vegetative cover and
topography (VESCH pg. VII Checklist).
26. Please add culvert inlet protection and temporary seeding to the list of erosion and sediment
control measures in the narrative (VESCH pg. VII Checklist).
27. Culvert inlet protection for greater than 1 acre of drainage area require design computations.
Please provide design computations for the inlet protections at structure D -6 and the pipe
stubbed out of existing structure ST -74 (VESCH pg. VII Checklist). [See comments 32 and 33
below.]
Site Plan:
28. Please provide the general erosion and sediment control construction notes on the plan,
verbatim (VESCH Table VI -15).
29. Please add the dust control symbol to the plan in a few places (VESCH 3.39).
30. Silt fence is in appropriately applied to the site. Please remove the silt fence symbol in areas up
slope of proposed grading. These areas up slope of the site will need to be stabilized or covered
by an approved erosion and sediment control plan before the erosion and sediment control bond
for this site can be released.
32. Adequate erosion and sediment control must be provided for all stages of construction
(DSM907.C). The pipe currently stubbed out of the back of structure ST -74 must have adequate
inlet protection designed for the site's current condition. This inlet protection must remain in
place until proposed grades are accomplished and standard drop inlet protection can be used.
Please design a culvert inlet sediment trap for the pipe in accordance with the VESCH std. &
spec. 3.13 and show it on the plans (VESCH std. & spec. 3.08).
33. The drainage area to structure D -6 is greater than 1 acre and therefore will require a culvert
inlet sediment trap designed in accordance with the VESCH std. & spec. 3.13 (VESCH std. &
spec. 3.08);
AI
COUNTY OF ALBEMARLE ®�• Engineering Plan Review Comments
Department of Community Development ''lgeff
Current Development Group �INP
Project: Hollymead Town Center, Area C, Block 5, SDP200500095,
WP0200500072. c/3it-11$— l f q.
Plan preparer: David Jensen W. W. Associates (fax 98'4 -2700)
Owner or rep.: C. W. Hurt (fax 296 -3510)
Plan received date: 20 April 2006 (Revision 1)
10 February 2006
Date of comments: 31 May 2006 (Revision 1) b D
28 March 2006 C
Review Engineer: Mark Chambers
A. Road and drainage plan:
1. We would prefer the road plan be submitted as a separate package including sheets relevant to the
road plan only.
Revision 1: Thank you for addressing this comment.
2. Please show the location of all traffic and road name signs on the road plans (14 -423, County
Code Chapter7, Article II).
Revision 1: Thank you for addressing this comment.
3. Please provide edge of pavement/face of curb radii for all horizontal curves associated with the
road ways, parking and alley (DSM905.D.3 &4, 14- 512.D).
Revision 1: Thank you for addressing this comment.
4. The K value for the Sag in Laurel Park Lane does not meet the minimum standard of 30. Please
correct this condition (VDOT Road Design Manual, App. C Table C -1 -3).
Revision 1: Thank you for addressing this comment.
5. Please show the storm pipe and other utility crossings in the road profiles (DSM905.E.5).
Revision 1: Thank you for addressing this comment.
6. Please provide cross drains and under drains at all sags and cut and fill transitions (DSM
905.E.6).
Revision 1: Thank you for addressing this comment.
7. Laurel Park Lane does not meet the minimum pavement width requirement of 36'. Please correct
this condition (VDOT Design Manual 24 VAC 30 -90 -380).
Revision 1: Thank you for addressing this comment.
8. Please label Laurel Park Lane as a private road.
Revision 1: Thank you for addressing this comment.
9. Please provide and label the access isle /ingress egress easement for Laurel Park Lane.
Revision 1: Thank you for addressing this comment.
10. Please continue the access isle /ingress egress easement along the entire length of Grand Forks
Blvd.
Revision 1: Thank you for addressing this comment.
11. Please include a road plan for Grand Forks Plaza, include all required information and design
calculations.
Revision 1: Thank you for addressing this comment.
Er :veering Plan Review Comments
Page 2 of 4
12. Please include 4" of 21A under the sidewalk in the Laurel Park Lane Cross section.
Revision 1: Thank you for addressing this comment.
13. Please provide a cross section of the Alley (DSM604.B, 14- 410.D).
Revision 1: Thank you for addressing this comment.
14. Please provide a name for the public road on the north side of the site. In addition please provide
evidence of VDOT and the county approval for the road, or provide road plans for review, or
remove it from the plan.
Revision 1: Please provide evidence of VDOT and County approval for Pereseco Lane.
15. All roads necessary for access to the site must be built or bonded before final site plan approval.
Revision 1: Please provide a Schedule of Completion for Bonded Improvements and a
Subdivision Road Bond Estimate Request for all roads necessary for access to the site that are
not covered under another approved plan and bond.
16. VDOT approval is required for the public roads and entrances.
Revision 1: Please provide evidence of VDOT approval for public road and entrances to public
roads shown on this site plan.
17. Please label all curb types being proposed.
Revision 1: Thank you for addressing this comment.
18. Please provide inlet comps for existing structures ST -61 and ST -62, there can be no carry over
into Timberwood Blvd. (DSM905.E.3.b).
Revision 1: Thank you for addressing this comment.
19. Please provide a check storm using 6.5 inches per hour for inlets D -2, D -1, D -7 (DSM909.1.A,
505.G.1)
Revision 1: Thank you for addressing this comment.
20. Please provide overland relief for inlet D -1 that does not direct runoff to the corner of the
structure on lot 16.
Revision 1: Thank you for addressing this comment.
21. Please specify VDOT, IS -1 inlet shaping for the storm drainage system (DSM 505.E.9).
Revision 1: Thank you for addressing this comment.
22. Please provide a drainage area map for structure D -6.
Revision 1: Thank you for addressing this comment.
B. Site plan: (SDP200500095)
23. Please show all roof drains attaching to the stormwater system.
Revision 1: Thank you for addressing this comment.
24. Please provide sight distance for the entrances of Grand Forks Blvd and the Alley (VDOT Road
Manual, DSM CD -15).
Revision 1: Please provide the necessary site distance easement on the Block C4 parcel (for the
alley site distance east on Laurel Park Lane).
25. The standard 20' drainage easement is not adequate for storm structure D -3 and the 18' pipe
where the system is in excess of 8' below grade. Please correct this condition. (See DSM
1101.B.bullet 3)
Revision 1: Thank you for addressing this comment.
26. Please provide a drainage summary table (18- 32.6.6.d.4 &5, DSM909.1.C).
Revision 1: Thank you for addressing this comment.
En'-;neering Plan Review Comments
•..i Page 3 of 4
C. Stormwater management plan:
23. Please provide a copy the stormwater management facilities maintenance agreement for
Hollymead Town Center Stormwater Management Facility 2.
Revision 1: Per you response letter we will look for the maintenance agreement under separate
cover.
24. No plan needed. It has been stated by the design engineer that Hollymead Town Center
Stormwater Management Facility 2 will provide water detention and quality for this site.
D. Erosion and sediment control plan:
Narrative:
25. Please add a description of existing site conditions to the narrative, i.e. vegetative cover and
topography (VESCH pg. VII Checklist).
Revision 1: Thank you for addressing this comment.
26. Please add culvert inlet protection and temporary seeding to the list of erosion and sediment
control measures in the narrative (VESCH pg. VII Checklist).
Revision 1: Thank you for addressing this comment.
27. Culvert inlet protection for greater than 1 acre of drainage area require design computations.
Please provide design computations for the inlet protections at structure D -6 and the pipe
stubbed out of existing structure ST -74 (VESCH pg. VII Checklist). [See comments 32 and 33
below.]
Revision 1: Thank you for addressing this comment.
Site Plan:
28. Please provide the general erosion and sediment control construction notes on the plan,
verbatim (VESCH Table VI -15).
Revision 1: Thank you for addressing this comment.
29. Please add the dust control symbol to the plan in a few places (VESCH 3.39).
Revision 1: Thank you for addressing this comment.
30. Silt fence is in appropriately applied to the site. Please remove the silt fence symbol in areas up
slope of proposed grading. These areas up slope of the site will need to be stabilized or covered
by an approved erosion and sediment control plan before the erosion and sediment control bond
for this site can be released.
Revision 1: Thank you for addressing this comment.
32. Adequate erosion and sediment control must be provided for all stages of construction
(DSM907.C). The pipe currently stubbed out of the back of structure ST -74 must have adequate
inlet protection designed for the site's current condition. This inlet protection must remain in
place until proposed grades are accomplished and standard drop inlet protection can be used.
Please design a culvert inlet sediment trap for the pipe in accordance with the VESCH std. &
spec. 3.13 and show it on the plans (VESCH std. & spec. 3.08).
Revision 1: Please design a culvert inlet sediment trap for the pipe stubbed out of the back of
structure ST -74 in accordance with the VESCH std. & spec. 3.13 and it on the plans
(VESCH std. & spec. 3.08).
33. The drainage area to structure D -6 is greater than 1 acre and therefore will require a culvert
inlet sediment trap designed in accordance with the VESCH std. & spec. 3.13 (VESCH std. &
spec. 3.08);
Revision 1: Thank you for addressing this comment.
Er 'leering Plan Review Comments
,ome ■,, Page 4 of 4
Attachment: (none)
Copy: file SDP - 2005 -0095, WPO- 2005 -00072
..r Azi<,
COUNTY OF ALBEMARLE Engineering Plan Review Co a
Department of Community Development
Current Development Group Amer: ' f
Project: Hollymead Town Center, Area C, Block 5, SDP200500095,
WPO200500072. 434 cCIS 1444
Plan preparer: David Jensen W. W. Associates (fax 984-24404
Owner or rep.: C. W. Hurt (fax 296 -3510)
Plan received date: 30 June 2006 (Rev2)
20 April 2006 (Revision 1)
10 February 2006
Date of comments: 18 Aug 2006 (Rev2)
31 May 2006 (Revision 1)
28 March 2006
Review Engineer: Mark Chambers, Jonathan Sharp (Rev2)
Engineering cannot recommend approval until the following comments have been addressed (listed
in bold). The on site road bond will be $169,550.
A. Road and drainage plan:
1. We would. prefer the road plan be submitted as a separate package including sheets relevant to the
road plan only.
Revision I: Thank yogi for addressing this comment.
2. Please show the location of all traffic and road name signs on the road plans (14 -423, County
Code Chapter7, Article 11).
Revision 1: Thank a-'oit for addressing this comment.
3. Please provide edge of pavement face of curb radii for all horizontal curves associated with the
road ways, parking and alley (DSM905.D.3 &4, 14- 512.D).
Revision 1: Thank you for- addressing this comment.
4. The K value for the Sag in Laurel Park Lane does not meet the minimum standard of 30. Please
correct this condition (VDOT Road Design Manual, App. C Table C -1 -3).
Revision 1: Thank you addressing this comment.
5. Please show the storm pipe and other utility crossings in the road profiles (DSM.905.E.5).
Revision 1: 'Thank yon for addressing this comment.
6. Please provide cross drains and under drains at all sags and cut and fill transitions (DSM
905.E.6).
Revision 1: Thank you fin- addressing this comment.
7. Laurel Park Lane does not meet the minimum pavement width requirement of 36'. Please correct
this condition (VDOT Design Manual 24 VAC 30 -90 -380).
Revision 1: Thank you,for addressing this comment.
8. Please label Laurel Park Lane as a private road.
Revision 1: Thank von for addressing this comment.
9. Please provide and label the access isle /ingress egress easement for Laurel Park Lane.
Revision 1: "Thank you for addressing this comment,
10. Please continue the access isle/ingress egress easement along the entire length. of Grand Forks
,.,,gineering Plan Review Comments
Page 2 of 4
Blvd.
Revision 1: Thank you for addressing this comment.
11. Please .include a road plan for Grand Forks Plaza, include all required information and design
calculations.
Revision 1: Thank you for addressing this comment.
12. Please include 4" of 21A under the sidewalk in the Laurel Park Lane Cross section.
Revision 1: Thank you addressing this comment.
13. Please provide a cross section of the Alley (DSM604.B, 14-410.D).
Revision 1: Thank you for addressing this comment.
14. Please provide a name for the public road on the north side of the site. In addition please provide
evidence of VDOT and the county approval for the road, or provide road plans for review, or
remove it from the plan.
Revision 1: Please provide evidence of VDOT and County approval for Pereseco Lane.
Rev 2: Final site plan cannot be approved before the road plans for Pereseco Lane are
approved.
15..A11 roads necessary for access to the site must be built or bonded before final site plan approval.
Revision 1: Please provide a Schedule of Completion for Bonded Iznproveinetzts and a
Subdivision Road Bond Estimate Request all roads necessary for access to the site that are
not covered under another approved plan and bond.
Rev 2: comments addressed.
16. VDOT approval is required for the public roads and entrances.
Revision 1: Please provide evidence of VDOT approval for public road and entrances to public
roads shown on this site plan.
Rev 2: Two copies of the plans will be sent to VDOT.
17. Please label all curb types being proposed.
Revision I: Thank you fOr addressing this comment.
18. Please provide inlet comps for existing structures ST-61 and ST -62, there can he no carry over
into "i imberwood Blvd. (DSM905.E.3.h).
Revision I: Thank you far addressing this comment.
19. Please provide a check storm using 6.5 inches per hour for inlets D -2, D -1, D -7 (DSM909.1.A,
505.G.1)
Revision 1: Thank you for addressing this comment.
20. Please provide overland relief for inlet D -1 that does not direct runoff to the corner of the
structure on lot 16.
Revision 1: Thank wou,for addressing this comment.
21. Please specify VDOT, 1S -1 inlet shaping for the storm drainage system (DSM 505.E.9).
Revision 1: Thank you fir addressing this comment.
22. Please provide a drainage area map for structure D -6.
Revision 1: Thank you for addressing this comment.
B. Site plan: (SDP200500095)
23. Please show all roof drains attaching to the stormwater system.
Revision 1: Thank you for addressing this continent.
24. Please provide sight distance for the entrances of Grand Forks Blvd and the Alley (VDOT Road
Manual, DS M CID -15).
•
(1110 Lineering Plan Review Comments
Page 3 of 4
Revision 1: Please provide the necessary site distance easement on the Block C4 parcel (for the
alley site distance cast on Laurel Park Lane).
Rev comment addressed.
25. The standard 20' drainage easement is not adequate for storm structure D -3 and the 18' pipe
where the system is in excess of 8' below grade. Please correct this condition. (See DSM
l 101.B.bullet 3)
Revision 1: Thank you for addressing this comment.
26. Please provide a drainage summary' table (I8- 32.6.6.d.4 &5, DSM90Q.1.C).
Revision 1: Thank youtoi addressing this continent.
C. Stormwater management plan:
23. Please provide a copy the stormwater management facilities maintenance agreement for
Hollymead Town Center Stormwater Management Facility 2.
Revision 1: Per you response letter we will look for the maintenance agreement under separate
cover. g'_ zz , . }era „c,e A) f-Le }
Rev 2: A copy of the maintenance agreement is not in our files. h S K lrs.scl y b OGh
24. No plan needed. it has been stated by the design engineer that Hollymead Town Center P rov I d e d ,
Stormwater Management Facility 2 will provide water detention and quality for this site. 14. is ftacl�
D. Erosion and sediment control plan:
Narrative:
25. Please add a description of existing site conditions to the narrative, i.e. vegetative cover and
topography (VESCH pg. VII Checklist).
Revision 1: Thank you for addressing this comment.
26. Please add culvert inlet protection and temporary seeding to the list of erosion and sediment
control measures in the narrative (VESCH pg. VII Checklist).
Revision 1: Thank you for adclressing this comment.
27. Culvert inlet protection fir greater than 1 acre of drainage area require design computations.
Please provide design computations fbr the inlet protections at structure D -6 and the pipe
stubbed out of existing structure ST -74 (VESCH pg. VII Checklist). [See comments 32 and 33
below.]
Revision 1: Thank you for addressing this comment.
Site flan:
28. Please provide the general erosion and sediment control construction notes on the plan.
verbatim (VESCH Table VT -15).
Revision 1: Thank you for addressing this comment.
2 9. Please add the dust control symbol to the plan in a few places (VESC'lI 3.39).
Revision 1: Thank you for addressing this comment.
30. Silt fence is in appropriately applied to the site. Please remove the silt fence symbol in areas up
slope of proposed grading. These areas up slope of the site will need to he stabilized or covered
by an approved erosion and sediment control plan before the erosion and sediment control bond
for this site can he released.
Revision 1: Thank you for addressing this comment.
32. Adequate erosion and sediment control must be provided for all stages of construction
(DS 4-i907.C). The pipe currently stubbed out attic back of structure ST -74 must have adequate
4 111) k,„ ineering Plan Review Comments
Page 4 of 4
inlet protection designed for the site's current condition. This inlet protection must remain in
place until proposed grades are accomplished and standard drop inlet protection can be used.
Please design a culvert inlet sediment trap for the pipe in accordance with the VESCH std. &
spec. 3.13 and show it on the plans (VESCH std. & spec. 3.08).
Revision 1: Please design a culvert inlet sediment crap for the pipe stubbed out of the back of
structure ST -74 in accordance with the VESCH std. &. spec. 3.13 and it on the plans (VESCH
std. & spec. 3.08).
Rev 2: comment addressed.
33. The drainage area to structure D -6 is greater than 1 acre and therefore will require a culvert
inlet sediment trap designed in accordance with the VESCH std. & spec. 3.13 (VESCH std. &
spec. 3.08);
Revision]: Thank y-ou,tor addressing this comment.
Attachment: (none)
Copy: file SDP - 2005 -0095, WPO- 2005 -00072