HomeMy WebLinkAboutWPO201800058 Approval - County 2018-09-06
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 title: Foglia Residence
Project file number: WPO201800058
Plan preparer: Line + Grade Civil Engineers, Daniel Hyer dheyer@line-grade.com
Owner or rep.: Lee S. or Joanne Cutcliff
Plan received date: 09 July 2018
Plan received date
(Revision 1): 29 August 2018
Date of comments: 03 August 2018
Date of comments
(Revision 1): 06 September 2018 – Approved pending nutrient credit purchase
Reviewer: WW Associates, Inc.
County Code section 17-410 and Virginia Code §62.1-44.15:34 requires the VSMP authority to
act on any VSMP permit by issuing a project approval or denial. Project eligible for approval
pending purchase of 0.32 lbs. of phosphorus nutrient credit.
A. Stormwater Pollution Prevention Plan (SWPPP) – SWPPP comments addressed with
Revision 1.
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. SWPPP is not formatted in accord with the requirements published by the duly authorized
Albemarle County, Virginia VSMP Authority Administrator. A copy of the SWPPP format is
attached. This information is available on the County’s website as well. The Administrator will
permit and review the SWPPP as formatted and submitted for this project only. All future project
SWPPP submitted by Line + Grade Civil Engineering shall be in accord with the published
Albemarle County SWPPP format.
Revision 1 Response: Acknowledged. SWPPP submittals on future projects will utilize the
County format. Line and Grade appreciates the courtesy of accepting the current
formatting of the SWPP for this project.
Revision 1 Comment: Comment addressed. Please add WPO201800058 to the final copy of
the SWPP cover sheet.
2. The DEQ notice of general permit coverage letter shall be included when received. Please add an
appendix to the SWPPP for this letter.
Revision 1 Response: Acknowledged. The SWPPP has incorporated Appendix 11 which is
where the general permit coverage letter will be inserted when received.
Revision 1 Comment: Acknowledged.
3. Appendix 8 Pollution Prevention Plan is to include a plan showing pollution activities and
prevention practices. Provide a reduced 11” x 17” copy of a site plan on which all of the activity
locations are clearly marked. This plan is to be kept up-to-date with ongoing site changes and
Engineering Review Comments
Page 2 of 5
inspections.
Revision 1 Response: Acknowledged. Appendix 8 now includes a Pollution Prevention Plan
as an 11” x 17” copy.
Revision 1 Comment: Comment addressed.
4. Appendix 9 – Please indicate whether site is in TMDL impaired or exceptional waters. If
discharge to impaired water, please add verbiage from subparagraphs (b) and (c) of 9VAC25-
880-70 Part I(B)(4). If to exceptional waters, comply with the requirements of 9VAC25-880-70
Part I(B)(5).
Revision 1 Response: It has been determined that the North Fork of the Hardware River is
an impaired water. As such, the verbiage from sub-paragraphs (b) and (c) from 9VAC25-
880-70 Part 1(B)(4) have been included.
Revision 1 Comment: Comment addressed.
5. The SWPPP has references to the City of Charlottesville, East McIntire Park, etc. in the
Introduction and Plan Requirements sections.
Last paragraph of the Introduction A – change City of Charlottesville to Albemarle
County
Revision 1 Response: The reference to City of Charlottesville has been revised to
Albemarle County, see revised introduction A.
Revision 1 Comment: Comment addressed.
4th paragraph of the Introduction B – change City of Charlottesville to Albemarle County
Revision 1 Response: The reference to City of Charlottesville has been revised to
Albemarle County, see revised introduction B.
Revision 1 Comment: Comment addressed.
II(A)(2) – change East McIntire Park to Foglia Residence
Revision 1 Response: The reference to East McIntire Park has been revised to
Foglia Residence, see revised II(A).
Revision 1 Comment: Comment addressed.
II(B)(1) – Table 2 needs to be edited in its entirely to reflect the Foglia Residence
construction
Revision 1 Response: The table has been revised to reflect the Foglia Residence.
Revision 1 Comment: Comment addressed.
II(B)(2)(a) – change East McIntire Park to Foglia Residence
Revision 1 Response: The reference to East McIntire Park has been revised to
Foglia Residence, see revised II(B).
Revision 1 Comment: Comment addressed.
II(B)(2)(b)(c) – change East McIntire Park to Foglia Residence
Revision 1 Response: The reference to East McIntire Park has been revised to
Foglia Residence, see revised II(B).
Revision 1 Comment: Comment addressed.
6. Please correct the project area/disturbed area to 3.46 acres for Item 9 of the registration statement.
Revision 1 Response: The reference to Item 9 project area/disturbed area has been revised
to 3.46, see registration statement.
Engineering Review Comments
Page 3 of 5
Revision 1 Comment: Comment addressed.
B. Pollution Prevention Plan (PPP) – PPP comments addressed with Revision 1.
The PPP content requirements can be found in County Code section 17-404.
1. Provide information requested in Part A Comment 3 above.
Revision 1 Response: The Pollution Prevention Plans are now included. Please refer to the
C4 Series within the documents.
Revision 1 Comment: Comment addressed.
C. Stormwater Management Plan (SWMP)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a
SWMP. This plan is approved.
1. Please add existing tree line and new tree line due to land disturbing activities to the Phase I and
Phase II E&SC Plan to facilitate verification of the land cover changes.
Revision 1 Response: Acknowledged. The existing and proposed tree lines have been
indicated on the drawings.
Revision 1 Comment: Comment addressed.
2. Please provide a detail of the outfall structure such as that shown on Figure 9.13 (page 22 of 62)
of VA DCR SWM Design Specification No. 9 Biorention (Level 1 Criteria) Version 2.0 dated
January 1, 2013.
Revision 1 Response: Acknowledged. Please refer to Detail 3 Sheet C3.3.
Revision 1 Comment: Comment addressed.
3. Please provide pretreatment as required by Section 6.4 of design specification referenced in
Comment 2 above.
Revision 1 Response: Acknowledged. Refer to Sheet C2.0 and Detail 4/C3.3 for the gravel
flow spreader pretreatment device.
Revision 1 Comment: Comment addressed.
4. Please provide planting plan as required by Section 6.8 of the design specification referenced in
Comment 2 above.
Revision 1 Response: We have elected to specify that the bioretention filter be planted with
Ernst Southeast Rain Garden Mix to create a turf cover of perennial forbs and grasses
contributing to rain garden biodiversity. We feel this conforms to the planting intent within
Section 6.8 of the above-mentioned specification section. Refer to detail 1/C2.2 and seeding
schedule 5/C2.2 for additional information.
Revision 1 Comment: Comment addressed.
5. The rim of the biorention outfall riser on Sheet C2.0 is noted at rim elevation 698.80. However,
Sheet C3.1 reports the ponded depth at elevation 698.25 and top of filter media at elevation
697.75 for a ponded depth of 0.50 feet. Please address the ponded depth discrepancy as based on
the outfall riser rim elevation of 698.80 and top of filter media elevation of 697.75.
Revision 1 Response: Acknowledged. This discrepancy has been resolved. Please refer to
Sheet C2.0 and BMP riser detail on Sheet C3.3.
Revision 1 Comment: Comment addressed.
6. The stormwater quantity outfalls from the disturbed area are directed to the existing natural
Engineering Review Comments
Page 4 of 5
stormwater conveyance systems – unnamed tributary of North Fork Hardware River for new
culvert A (24” RCP) concentrated uncontrolled and what appears to be a new culvert B (18”
CMP) concentrated control flow and uncontrolled sheet flow to North Fork Hardware River
floodplain. Outfalls from culvert A and culvert B are each directed to the natural stormwater
conveyances system and are to be analyzed in accord with 9VAC25-870-66(B)(3) the energy
balance. Please provide appropriate backup hydrology (Tc, CN calculations, hydrographs, etc.)
used to establish flow/volumes.
Revision 1 Response: Acknowledged. We have revised our SWM approach to be in
conformance with the County’s interpretation of the SWM code – per discussion with
Frank Pohl. Outfall locations have been revised.
Revision 1 Comment: Comment addressed.
7. Please label the “Driveway Ditch” on Sheet C3.0 post-developed drainage area map.
Revision 1 Response: Acknowledged. The driveway ditch has been labeled. Please refer to
updated drawings.
Revision 1 Comment: Comment addressed.
8. Please note that additional comments may be generated based on responses to these comments.
Revision 1 Response: Acknowledged.
Revision 1 Comment: No further comments.
D. Erosion and Sediment Control Plan (ESCP)
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP.
This plan is approved.
1. Please add the Albemarle County Engineering General Construction Notes for Erosion and
Sediment Control Plans (notes 1-20). These notes are attached. These notes are available on the
County’s website.
Revision 1 Response: Acknowledged. These notes have been added.
Revision 1 Comment: Comment addressed.
2. Albemarle County utilizes a paved wash rack type construction entrance. This detail may be
found in the Albemarle County Design Standards Manual page 8 of 23 which is available on the
County’s website and is enclosed for your use. Please replace the construction entrance detail on
Sheet C1.4 with the County-issued paved wash rack.
Revision 1 Response: Acknowledged. The construction entrance detail specified by
Albemarle County has been included within the revised drawings. Refer to Detail 1/C1.4.
Revision 1 Comment: Comment addressed.
3. As based on the County’s critical resources map, managed steep slopes are located within the
limits of disturbance. Please denote the location of the managed steep slopes with a symbol and
add to the legend on sheets C1.0 and C1.1
Revision 1 Response: The managed steep slopes from the County’s GIS are now shown on
the plans. We acknowledge that managed steep slopes are located within the property;
however, the limits of disturbance associated with this project will not impact any areas
designated as managed steep slopes. See revised plans.
Revision 1 Comment: Comment addressed.
The VSMP permit application and all plans may be resubmitted for approval when all comments have
been satisfactorily addressed. For re-submittals please provide 2 copies of the complete permit package
Engineering Review Comments
Page 5 of 5
with a completed application form.
Engineering plan review staff are available from 2-4 PM on Thursdays, should you require a meeting to
discuss this review.
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.
Please coordinate Nutrient Credit Purchase with the County’s Management Analysis prior to purchase.
Evidence of required level of nutrient credits is required prior to applicant receiving a grading permit.
After bonding (and nutrient purchase, ideally) 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 complete the request for a pre-construction conference 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?department=cdengwpo
File: WPO201800058 Foglia Residence 09-06-18.doc