- April 22nd, 2009, 4:34 pm
#27069
Max here is the first part of it, note the date 4/17/09 and 2009 Plan of expansion. At least Carowind's was called 2010 coaster. New coaster was only mentioned once in the title, the rest is grading work.
April 17, 2009
Goodfellow Jalbert Beard & Associates, Inc.
PO Box 539
Mechanicsville, Virginia 23111
Attn: Mr. Bill Goodfellow, P.E.
Re: Kings Dominion 2009 Plan of Expansion Am#34 – New Roller Coaster
Public Works subdivision plan review comments – REVIEW #2
SPR 6-84 AM 34-09 / HTE PZ# 09-30000009 / E&S# 4701 / HTE BP# 09-09900017
Dear Bill:
The Department of Public Works has reviewed the above captioned site plan submission and has the following comments. Please note, these comments are based on the requirements of the following Virginia State Laws and Hanover County Codes: Virginia Erosion and Sediment Control Law, Title 10, Chapter 5, Article 4 of the Code of Virginia; Virginia Erosion and Sediment Control Regulations (4 VAC 50-30); Chapter 10, Article II, Chesapeake Bay Preservation, Code of Hanover; Chapter 12, Floodplain and Drainage Control, Code Of Hanover; and the Hanover County Drainage Design Handbook (October 25, 1988).
GENERAL COMMENTS – these are comments that may request ancillary data / information to complete the plan submission, or may apply to all or various plan sheets.
1. Provide grading for the relocated Park Service Road. There are several areas that must be filled to bring the road up and no grades are provided. Show all grades and adjust E&S controls accordingly to ensure all land disturbance is controlled.
2. The last plan showed a long ditch from the existing manhole northwest of the Ride Photo Building to the BMP that is now shown as existing storm sewer. Is this accurate? It appears that RCP will also be tied into the existing HDPE pipe. Please provide a clear note for the contractor that requires them to install watertight connections between the dissimilar materials (ex: Kor-n-Seal; A Lok, etc.). Please include a detail on the plan.
3. E&S INSPECTION FEE - Please note that the Erosion and Sediment Control (E&S) fee for this project must be paid prior to plan approval. The fee, based on the amount of land disturbance stated in the Project Information and Tracking Sheet (3.41 acres) has been calculated to be $1,623.00. This fee is based on the current fee rate of $600.00 minimum base fee plus $300.00 per acre. This fee has been provided as a convenience for your project planning. PLEASE NOTE: Any increase / decrease in the proposed acreage of land disturbance will change the aforementioned fee. Also, since the E&S inspection fees are due prior to plan approval, any plan approved after the date on which a fee base increase is enacted will be subject to that increase (i.e. NO GRANDFATHERING). Please submit payment to the cashier located in the Building Inspections Department in the Administration Building. You must provide the cashier with the HTE project tracking number to facilitate the payment process. Do not submit payment to the Department of Public Works, all payments must go directly to the cashier located in the Building Inspections office.
4. REGIONAL STORMWATER FEE - Please note that the Regional Stormwater Pro-Rata Share fee for this project must be paid prior to plan approval. The fee, based on the amount of new impervious surface stated in the Project Information and Tracking Sheet (0.93 acres) has been calculated to be $9,300.00. This fee is based on the current fee rate of $10,000.00 per impervious acre. This fee has been provided as a convenience for your project planning. PLEASE NOTE: Any increase / decrease in the proposed impervious square footage will change the aforementioned fee. Also, since the Regional Stormwater Program fees are due at time of plan approval, any plan approved after the date on which a fee base increase is enacted will be subject to that increase (i.e. no grand fathering). Please submit payment to the cashier located in the Building Inspections Department in the Administration Building. You must provide the cashier with the HTE project tracking number to facilitate the payment process. Do not submit payment to the Department of Public Works, all payments must go directly to the cashier located in the Building Inspections office.
5. Show the LOD for the work that will take place on the basin. Show any new structures (emergency spillway, etc.) proposed in addition to grading, etc. Update all references in the plan, WQIA, PITS, etc. to the acreage of disturbance. Also, please include additional narrative that addresses the construction / upgrades to the basin. Add a note beside the basin work referencing the W.E.G. plan (include date) for additional details.
6. Show the Q100 elevation in the BMP.
7. Storm Sewer + Culverts – please address the following items:
a) Please separate the Q2 and Q10 culvert computations.
b) The rebel yell pipe system is adjacent to the lake, and appears to be part of the overflow for the lake. It seems the tail water from this lake for the specified storm events should be used in the culvert computations.
8. Stockpile – please reference the active E&S number for the plan that shows the approved stockpile location on the plan and in the E&S narrative.
9. Details – please use only the details from the 1992 VESCHB.
10. BMP – please address the following items:
a) According to the W.E.G. report, the basin overtops on the Q10 and Q100 storms. The basin was not constructed according to the approved plan. The basin must contain the Q2 and Q10 (without engaging the emergency spillway) and pass the Q100. Please provide the design to bring this basin into compliance. Please provide an updated and detailed design sheet, similar to the original approved plan sheet(s) from W.E.G. dated 7/28/05 and submitted by W.E.G. with the aforementioned report that accompanied your resubmission.
b) Please note that the County requires concrete pipe, concrete cradles, seepage control by means other than anti-seep collars, Class I riprap (minimum) and maximum 3:1 side slopes and minimum 2% grade across the basin bottom from the inlet to the outlet. I reference these based on a quick review of the 7/28/95 W.E.G. plan.
c) Show the Q10 and Q100 elevation.
d) W.E.G. recommended the emergency spillway be installed in their report. If the new design incorporates the emergency spillway, please provide details for the emergency spillway. Show plan and profile with D100, V100 (D10 and V10 if applicable), side slopes, embankment armoring, cross-sections and computations of the spillway channel every 25-feet.
e) Maintenance Agreement - add the following note to the plan. “There is a maintenance agreement for this facility recorded in deed book # __________ on page# _______ that requires, in addition to the maintenance conditions contained therein, that the on-site facility / dam (including outlet works) must be inspected by a professional engineer during the last 60 days of the first year of operation, and at least once every three years thereafter. The engineer’s inspection report must be subsequently submitted to Hanover County DPW for their review and fileâ€.
NOTE: Below are some new procedures that may offer opportunities to reduce review time and resubmittals for some plans:
In conjunction with the County’s newly implemented Customer Service Initiative, review comments are now provided farther in advance of the site plan review (staff/applicant) meeting so that the applicant has additional time to review the staff comments and prepare a response. It is our intent that this extra time provides the applicant time to meet with review agencies to discuss review comments and revise plans so that the staff/applicant meeting can be used as a pre-submittal meeting for the 2nd submittal. It is possible to waive agencies’ involvement in the staff/applicant meeting, as well as to waive the meeting entirely, based on the applicants’ needs; however this waiver of participation will need to be acknowledged by the applicable review agency as well as coordinated with the Planning Department Case Manager at least two days in advance of the scheduled meeting.
Please remember that meetings are 45 minutes in duration and that typically other applicant meetings are scheduled after your session. Therefore, in order to help us ensure that your meeting is as productive for you as possible, please plan in advance those items which are most important for you to discuss.
If you should have any questions concerning the detailed comments made during the review of your plans, please give me a call at 365-6181. When resubmitting plans, please return the marked plans along with a copy of these comments with a note stating how/where each comment was addressed.
If you have any questions, please feel free to contact me at 365-6181. Thank you very much.
Sincerely,
Robert R. Breckenkamp, P.E.
Civil Engineer III
pc: Mary Bush, Hanover County Planning Department
Cliff Dean - Kings Dominion
