HomeMy WebLinkAboutWPO201600011 Review Comments WPO VSMP 2016-04-07 t
S
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4J� mss, Dominion
ti,y/ L Engineering 172 South Pantops Drive
Charlottesville, VA 22911
0ca.4 ,� pre 434.979.8121 (p)
4��e ens 434.979.1681 (f)
ets DominionEng.com
May 16, 2016
Mr. John Anderson
Department of Community Development
401 McIntire Road
Charlottesville, VA 22902
RE: Harvest Moon WP0201600011
Dear John,
Please see our response below to County comments dated 26 February 2016 on the referenced plan.
A.Stormwater Pollution Prevention Plan(SWPPP)
1. Provide 11" x 17"Exhibit.(Recommend ESC Plan as template.)Show solid/non-hazardous waste dumpster;
sanitary facilities(port-a-john); solvent-paint storage;concrete wash-out;on-site fuel'storage. DEQ,during periodic
inspections of active projects, instructs on importance of an Exhibit that shows location of these features.All should
drain to containment.For example, silt fence downstream of port-a-john. Concrete wash-out,dumpster draining to
trapping device(lined, in case of concrete wash-out).On-site fuel storage berm with 10m1 liner,sized to hold fuel
volume+2 yr. storm event. .PDF samples available. Exhibit is not intended as a detailed design,but to show
containment and locations which may change over time. Exhibit is a construction aid and resource
protection/inspection management tool.
(Rev. 1)As follow-up: Locate concrete wash-out outside pavement—recommend to north,to drain to trap.Also, item
#C.4.,below.
Response: A concrete wash-out has been added to the SWPPP sheet that will be placed in the
final SWPPP packet so that it drains to a sediment trap.
2. Revise/update ESCP and SWMP(11" x 17"sheets).
Response: The ESCP and SWMP sheets will be replaced when comments have been addressed.
B.VSMP: SWPPP: Stormwater Management Plan(WPO201600011)
15.New: Stormwater Management Narrative(SW6):"In order to meet water quality requirements for phase 1,the
owner is proposing to purchase phosphorus credits." It is imperative that owner coordinate nutrient
Response: A copy of the signed Purchase and Sale Agreements has been added to sheet SW08.
The owner will provide a recorded copy of the purchase&sale agreement prior to VSMP permit
issuance.
4.Label L x W floor dimensions of sediment trap. (Rev. 1)Addressed.As follow-up: Ref. VESCH Std.& Spec.
3.13,sediment trap(p. I11-72): Revise proposed 40:1 length to width ratio. Recommend split into two traps
located in areas that allow geometry that meets VESCH Std.
ls
o„0 $• Dominion
o�y Engineering 172 South Pantops Drive
Charlottesville, VA 22911
I0 d,`, � 434.979.8121 (p)
4'�`e e,.s 434.979.1681 (f)
-ts DominionEng.com
Response: The new design of two traps was deemed to be more effective by correspondence
email 4/28/2016.
We trust the above adequately addresses your comments. Please let me know if you have any questions
or require additional information.
Best Regards,
rd]
' ; /riV
Dust n Greene. EIT
2 of 2
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
VSMP Permit plan review
Project:
Harvest Moon —Phase I (VSMP)
Plan preparer:
Mike Myers, Dominion Engineering [172 S. Pantops Drive
Charlottesville, VA 22911, M ers(&dominioneng com]
Owner or rep.:
Harvest Moon Catering Co./Mark Hahn
946 Grady Ave/Ste. 11, Charlottesville, VA 22901
Plan received date:
22 Feb 2016
(Rev. 1)
17 Mar 2016
Date of comments:
26 Feb 2016
(Rev. 1)
7 Apr 2016
Reviewer:
John Anderson
WP0201600011
A. Stormwater Pollution Prevention Plan (SWPPP)
The SWPPP content requirements can be found in County Code section 17-405. A SWPPP must contain (1)
a PPP, (2) an ESCP, (3) a SWMP, and (4) any TMDL measures necessary.
1. Provide 11" x 17" Exhibit. (Recommend ESC Plan as template.) Show solid/non-hazardous waste
dumpster; sanitary facilities (port -a john); solvent -paint storage; concrete wash-out; on-site fuel storage.
DEQ, during periodic inspections of active projects, instructs on importance of an Exhibit that shows
location of these features. All should drain to containment. For example, silt fence downstream of port -a -
john. Concrete wash-out, dumpster draining to trapping device (lined, in case of concrete wash-out). On-
site fuel storage berm with 10ml liner, sized to hold fuel volume + 2 yr. storm event. .PDF samples
available. Exhibit is not intended as a detailed design, but to show containment and locations which may
change over time. Exhibit is a construction aid and resource protection/inspection management tool.
(Rev. 1) As follow-up: Locate concrete wash-out outside pavement —recommend to north, to drain to trap.
Also, item #C.4., below.
2. Revise/update ESCP and SWMP (11" x 17" sheets).
3. Recommend do not resubmit SWPPP until all ESCP/SWMP comments have been addressed.
B. VSMP: SWPPP: Stormwater Management Plan (WP0201600011)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a SWMP. This SWMP is
conditionally approved. SWMP can be approved with purchase of phosphorus credits. Coordinate with Countyprior
to purchase —see item #15, below. 0.68 lb. nutrient credit purchase required
1. Recommend include WP0201600011 in Plan Title. (Rev. 1) Addressed.
2. SW2 —Check Impervious Area Summary table: Bld 1/Travelway values, Phase 1 v. Phase 1 & 2 differ.
Confirm values are accurate. (Rev. 1) Addressed.
3. SW2 —Check Impervious Area Summary table/Phase 1 & 2: Include building 4. (Rev. 1) Addressed.
Engineering Review Comments
Page 2 of 3
4. SW3 —There are dissimilarities of existing condition features between this plan and Initial Site Plan
(SDP201600004). For example: Ex. Shed, Ex. Trailer, Existing Ditch (SDP/SP3) are labelled Cinder block
building, Cinder block building, and Intermittent Stream (SW3). Please reconcile, especially stream/ditch.
Provide evidence to support proper description of this feature (intermittent stream v. ditch). (Rev. 1)
Addressed.
SW6
5. Apply/transfer SDP201600004 (sheet SP4) storm drain design to SW6, SW8, SW9: connect inlets 3E and
inlet IA. Eliminate pipe between inlet 3E and outfall 3F. (Rev. 1) Addressed.
6. Label inlets (inlet ID). (Rev. 1) Addressed.
7. Label storm pipes (#). (Rev. 1) Addressed.
8. Recommend 15" DIA storm line for 12" DIA HDPE if can maintain Vel. >3 fps in 15" DIA pipe. (Rev. 1)
Addressed.
9. Ref. 11/5/15 email to Mike Myers (re. As -built survey of Kegler's pond). All items listed in email have
been considered with design, except item #1. Provide Construction Record Drawing of `Kegler's Pond' to
determine true dimensions and capacity; basin outfall structures must be included." [11/5; 9/2/15 email]
(Rev. 1) Addressed.
10. Examine/evaluate existing riprap, outfall 1. Provide L x W x D dimensions. If riprap sparse or inadequate,
add plan details directing stone placement, EC3 matting, etc. If mat/riprap required, update view on SW8,
OP detail table, SW 10. (Rev. 1) Addressed.
SW9
11. Label storm pipes in storm sewer drainage area map inset. (Rev. 1) Addressed.
12. Eliminate 3F. Eliminate storm pipe from 3E to 3F in inset view. (Rev. 1) Addressed.
13. Storm Drain Computations table: If DnStm Ln No refers to downstream inlet ID, recommend revise column
heading to read Dn Inlet ID. If this column refers to inlet ID, values 1, 2, 3, 5 do not correspond to inlets.
Revise headings/column values, as necessary. If interpretation a poor guess, please call reviewer (cannot
interpret table). (Rev. 1) Addressed.
14. Storm Inlet Computations table If column labeled Curb Len refers to inlet length, please label column Inlet
Len. (Rev. 1) Addressed.
15. New: Stormwater Management Narrative (SW6): "In order to meet water quality requirements for phase 1,
the owner is proposing to purchase phosphorus credits." It is imperative that owner coordinate nutrient
credit purchase with Ana Kilmer, Albemarle County, 434.296-5832 —x3246,rip or to credit purchase.
C. VSMP: SWPPP: Erosion Control Plan (WP0201600011)
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan is disapproved
for reasons provided in item #4, below. The erosion control plan content requirements can be found in County Code section
17-402.
SW8
1. List /label limits of disturbance =2.37 Ac. (Rev. 1) Addressed.
2. Provide silt fence (SF) south of building 1, at edge of limits of disturbance. (Rev. 1) Addressed.
3. Provide safety fence (SAF) between phase 1 and TMP45-112G1 (Medical spa). (Rev. 1) Addressed.
4. Label L x W floor dimensions of sediment trap. (Rev. 1) Addressed. As follow-up: Ref. VESCH Std. &
Spec. 3.13, sediment trap (p. III -72):
The designer should seek to provide a storage area which has a minimum 2:1 length to
width ratio (measured from point of maximum runoff introduction to outlet).
Revise proposed 40:1 length to width ratio. Recommend split into two traps located in areas that
allow geometry that meets VESCH Std.
5. PCE Vehicle rinse/sediment-laden wash waters may not drain to SDMH 204. Provide trapping device that
allows sediment -laden water to decant. DEQ guidance specifically provides that sediment -laden waters
must be contained. Provide alternate PCE settling/trapping design that does not propose discharge to
existing /propo in system. [Also: Revise ESC Narrative/Harvest Moon, Feb -19, 2016, p. 4, Phase 1/1.1
(Rev. 1) Addressed. Sediment -laden water will temporarily flow to a trapping measure at lower elevation.
Engineering Review Comments
Page 3 of 3
6. Recommend provide mass grade plan sheet and separate fine grade sheet with building/pavement features.
(Rev. 1) Addressed.
7. Access/additional: (Rev. 1) Addressed.
a. Show proposed grades; grade elevation difference —16' top/bottom.
b. Tie proposed grades to existing grades that border access, left/right.
8. Provide additional existing grade labels. (Rev. 1) Addressed.
9. Extend existing contour lines at least 50 -ft beyond property lines. (Rev. 1) Addressed.
10. Acquire temporary construction easement if needed from TMP45-112G1 (Medical spa) to construct
proposed grades/improvements. (Rev. 1) Addressed. 3/18/16 Applicant response: "A construction
easement from TMP 45-112G1 will not be necessary for this project."
11. Provide fine grade/spot elevations at SDMH 203 to ensure MH top/new Access pavement align. (Rev. 1)
Addressed.
12. Ensure site plan /WPO plan proposed grades match on west side of building 1. (Rev. 1) Addressed. "The
proposed grades on the WPO plan will be shown on the Final Site Plan."
Engineering review staff are available 2-4 PM on Thursdays, should wish to discuss project, comments, or design.
Plan review staff is available at 434.296-5832 -0069, should you have questions.
Process:
After approval, plans will need to be bonded. The bonding process is begun by submitting a bond estimate request
form and fee to the Department of Community Development. One of the plan reviewers will prepare estimates and
check parcel and easement information based on the approved plans. The County's Management Analyst will
prepare bond agreement forms, which will need to be completed by the owner and submitted along with cash,
certificates or sureties for the amounts specified. The agreements will need to be approved and signed by the County
Attorney and County Engineer. This may take 2-4 weeks to obtain all the correct signatures and forms.
Stormwater Management Facilities Maintenance agreements will also need to be completed and recorded. The
County's Management Analyst or other staff will prepare the forms and check for ownership and signature
information. The completed forms will need to be submitted along with court recording fees.
After bonding and agreements are complete, county staff will need to enter project information in a DEQ database
for state application processing. DEQ will review the application information based on local VSMP authority
approval. At this time, the DEQ portion of the application fees will need to be paid directly to the state. For fastest
processing, this is done electronically with the emails provided on the application. DEQ should notify applicants
with instructions on how to pay fees. When DEQ approves the application, they will issue a permit coverage letter.
This should be copied to the county.
After DEQ coverage is issued, via the coverage letter, the County can hold a pre -construction conference. Applicants
will need to request a pre -construction conference by completing a form, and pay the remainder of the application
fee. The form identifies the contractor and responsible land disturber, and the fee remaining to be paid. This will be
checked by county staff, and upon approval, a pre -construction conference will be scheduled with the County
inspector. At the pre -construction conference, should everything proceed satisfactorily, a joint VSMP and grading
permit will be issued by the County so that work may begin.
County forms can be found on the county website forms center under engineering;
http://www.albemarle.org/deptforms.asp?departinent--cdengmTo
Thank you
434.296-5832 —x3069
File: WP0201600011 Harvest Moon VSMP-040716revl
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
VSMP Permit plan review
Project: Harvest Moon —Phase I (VSMP)
Plan preparer: Mike Myers, Dominion Engineering [172 S. Pantops Drive
Charlottesville, VA 22911, M ers(aWominioneng com]
Owner or rep.: Harvest Moon Catering Co./Mark Hahn
946 Grady Ave/Ste. 11, Charlottesville, VA 22901
Plan received date: 22 Feb 2016
Date of comments: 26 Feb 2016
Reviewer: John Anderson
WP0201600011
A. Stormwater Pollution Prevention Plan (SWPPP)
The SWPPP content requirements can be found in County Code section 17-405. A SWPPP must contain (1)
a PPP, (2) an ESCP, (3) a SWMP, and (4) any TMDL measures necessary.
Provide 11" x 17" Exhibit. (Recommend ESC Plan as template.) Show solid/non-hazardous waste
dumpster; sanitary facilities (port -a john); solvent -paint storage; concrete wash-out; on-site fuel storage.
DEQ, during periodic inspections of active projects, instructs on importance of an Exhibit that shows
location of these features. All should drain to containment. For example, silt fence downstream of port -a -
john. Concrete wash-out, dumpster draining to trapping device (lined, in case of concrete wash-out). On-
site fuel storage berm with 10ml liner, sized to hold fuel volume + 2 yr. storm event. .PDF samples
available. Exhibit is not intended as a detailed design, but to show containment and locations which may
change over time. Exhibit is a construction aid and resource protection/inspection management tool.
2. Revise/update ESCP and SWMP (11" x 17" sheets).
3. Recommend do not resubmit SWPPP until all ESCP/SWMP comments have been addressed.
B. VSMP: SWPPP: Stormwater Management Plan (WP0201600011)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a SWMP. This plan is
disapproved for reasons provided in comments below. The stormwater management plan content requirements can be
found in County Code section 17-403.
1. Recommend include WP0201600011 in Plan Title.
2. SW2 —Check Impervious Area Summary table: Bld 1/Travelway values, Phase 1 v. Phase 1 & 2 differ.
Confirm values are accurate.
3. SW2 —Check Impervious Area Summary table/Phase 1 & 2: Include building 4.
4. SW3 —There are dissimilarities of existing condition features between this plan and Initial Site Plan
(SDP201600004). For example: Ex. Shed, Ex. Trailer, Existing Ditch (SDP/SP3) are labelled Cinder block
building, Cinder block building, and Intermittent Stream (SW3). Please reconcile, especially stream/ditch.
Provide evidence to support proper description of this feature (intermittent stream v. ditch).
SW6
Engineering Review Comments
Page 2 of 3
5. Apply/transfer SDP201600004 (sheet SPO storm drain design to SW6, SW8, SW9: connect inlets 3E and
inlet IA. Eliminate pipe between inlet 3E and outfall 317.
6. Label inlets (inlet ID).
7. Label storm pipes (#).
8. Recommend 15" DIA storm line for 12" DIA HDPE if can maintain Vel. >3 fps in 15" DIA pipe.
9. Ref. 11/5/15 email to Mike Myers (re. As -built survey of Kegler's pond). All items listed in email have
been considered with design, except item #1. Provide Construction Record Drawing of `Kegler's Pond' to
determine true dimensions and capacity; basin outfall structures must be included." [11/5; 9/2/15 email]
10. Examine/evaluate existing riprap, outfall 1. Provide L X W X D dimensions. If riprap sparse or inadequate,
add plan details directing stone placement, EC3 matting, etc. If mat/riprap required, update view on SW8,
OP detail table, SW10.
SW9
11. Label storm pipes in storm sewer drainage area map inset.
12. Eliminate 3F. Eliminate storm pipe from 3E to 3F in inset view.
13. Storm Drain Computations table: If DnStm Ln No refers to downstream inlet ID, recommend revise column
heading to read Dn Inlet ID. If this column refers to inlet ID, values 1, 2, 3, 5 do not correspond to inlets.
Revise headings/column values, as necessary. If interpretation a poor guess, please call reviewer (cannot
interpret table).
14. Storm Inlet Computations table -If column labeled Curb Len refers to inlet length, please label column Inlet
Len.
C. VSMP: SWPPP: Erosion Control Plan (WP0201600011)
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan is disapproved
for reasons provided in comments below. The erosion control plan content requirements can be found in County Code
section 17-402.
SW8
1. List /label limits of disturbance =2.37 Ac.
2. Provide silt fence (SF) south of building 1, at edge of limits of disturbance.
3. Provide safety fence (SAF) between phase 1 and TMP45-112G1 (Medical spa).
4. Label L X W floor dimensions of sediment trap.
5. PCE Vehicle rinse/sediment-laden wash waters may not drain to SDMH 204. Provide trapping device that
allows sediment -laden water to decant. DEQ guidance specifically provides that sediment -laden waters
must be contained. Provide alternate PCE settling/trapping design that does not propose discharge to
existing /proposed storm system. [Also: Revise ESC Narrative/Harvest Moon, Feb -19, 2016, p. 4, Phase 1/1.1
6. Recommend provide mass grade plan sheet and separate fine grade sheet with building/pavement features.
7. Access/additional:
a. Show proposed grades; grade elevation difference -16' top/bottom.
b. Tie proposed grades to existing grades that border access, left/right.
8. Provide additional existing grade labels.
9. Extend existing contour lines at least 50 -ft beyond property lines.
10. Acquire temporary construction easement if needed from TMP45-112G1 (Medical spa) to construct
proposed grades/improvements.
11. Provide fine grade/spot elevations at SDMH 203 to ensure MH top/new Access pavement align.
12. Ensure site plan /WPO plan proposed grades match on west side of building 1.
Engineering review staff are available 2-4 PM on Thursdays, should wish to discuss project, comments, or design.
Plan review staff is available at 434.296-5832 -0069, should you have questions.
Process:
After approval, plans will need to be bonded. The bonding process is begun by submitting a bond estimate request
form and fee to the Department of Community Development. One of the plan reviewers will prepare estimates and
Engineering Review Comments
Page 3 of 3
check parcel and easement information based on the approved plans. The County's Management Analyst will
prepare bond agreement forms, which will need to be completed by the owner and submitted along with cash,
certificates or sureties for the amounts specified. The agreements will need to be approved and signed by the County
Attorney and County Engineer. This may take 2-4 weeks to obtain all the correct signatures and forms.
Stormwater Management Facilities Maintenance agreements will also need to be completed and recorded. The
County's Management Analyst or other staff will prepare the forms and check for ownership and signature
information. The completed forms will need to be submitted along with court recording fees.
After bonding and agreements are complete, county staff will need to enter project information in a DEQ database
for state application processing. DEQ will review the application information based on local VSMP authority
approval. At this time, the DEQ portion of the application fees will need to be paid directly to the state. For fastest
processing, this is done electronically with the emails provided on the application. DEQ should notify applicants
with instructions on how to pay fees. When DEQ approves the application, they will issue a permit coverage letter.
This should be copied to the county.
After DEQ coverage is issued, via the coverage letter, the County can hold a pre -construction conference. Applicants
will need to request a pre -construction conference by completing a form, and pay the remainder of the application
fee. The form identifies the contractor and responsible land disturber, and the fee remaining to be paid. This will be
checked by county staff, and upon approval, a pre -construction conference will be scheduled with the County
inspector. At the pre -construction conference, should everything proceed satisfactorily, a joint VSMP and grading
permit will be issued by the County so that work may begin.
County forms can be found on the county website forms center under engineering;
htW://www.albemarle.orgJdeptforms.asp?departinent--cdengno
Thank you
434.296-5832 —0069
File: WP0201600011 Harvest Moon—VSMP-022616