CHEROKEE COUNTY
ENGINEERING DEPARTMENT
1130 Bluffs Parkway - Canton, Georgia 30114
678-493-6074 - Fax 678-493-6088
September 6, 2017
To:Design Professional
From:Cherokee County Stormwater
Re:Final Plat – Hickory Meadows Unit 2
Project #: PL20140000861
1)Provide an AutoCAD file of the final plat that includes parcels, stormwater pipes, as-built topography of pond, right of way, buffers, & drainage easements. Please be sure these are on separate layers and email to
2)Place the following note on the cover sheet:
“Approval of these plans does not constitute approval by Cherokee County of any land disturbing activities that may impact any federally-listed threatened or endangered species protected by the Endangered Species Act. It is the responsibility of the property owner to contact the US Fish and Wildlife Service for approval of these plans prior to undertaking any land disturbance.”
3)Place the following note on the cover sheet:
“Approval of these plans does not constitute approval by Cherokee County of any land disturbing activities within wetland areas. It is the responsibility of the property owner to contact the appropriate regulatory agency for approval of these plans prior to undertaking any land disturbance.”
4)Place the following note on the plan view: Per Section R401.3 of the 2012 International Residential Code, the entire lot shall be graded to drain surface water away from all foundation walls. The grade shall fall a minimum of 6 inches within the first 10 feet. Where lot lines or other physical barriers prohibit 6 inches of fall within 10 feet, the final grade shall slope away from the foundation at a minimum slope of 5 percent and the water shall be directed to drains or swales to ensure drainage away from the structure. Swales shall be sloped at a minimum of 2 percent.
5)The wetlands must be delineated on the plat or a note added.
6)Structural signoff on the retaining walls.
7)Show the 100 year HW elevation and associated minimum finished floor elevations on the lots.
8)Show the location & size of drainage structures on the plat.
9)Check to make sure these match the construction documents.
10)Clearly delineate the drainage easements.
Flood Plain
11)Check for Cherokee County Future Conditions Floodplain.
12)State whether the floodplain is Zone X, A or AE. If the floodplain is Zone AE show the 100 year BFE's.
13)Reference and send the A Conditional Letter of Map Revision (CLOMR)
14)Set the minimum finished floor elevation for lots ___ a minimum of 3.0' above the FEMA 100 year base flood elevation. Or 1’ above the Cherokee County Future Conditions floodplain. Provide a note requiring an elevation certificate for these lots
15)An elevation certificate will be required for lots adjacent to, or where FEMA shows a map.
16)Reference the updated F.I.R.M. panel, effective September 29, 2006 and state the appropriate community panel number.
Stormwater Management Areas
24)All water quality and stormwater management features should be installed prior to plat approval or associated bonds posted. You must provide sufficient rationale to delay installation of permanent stormwater features. If bonding is allowed, 3 quotes shall be provided on all deferred installations. The quotes shall include all work (materials, labor, delivery, installation, plants delivery, etc.). The bond amount will be based on the average of the 3 quotes plus 30%. The performance bond forms can be found at:
17)Pond Details
18)A 5' fence, with a 10' gate, is required for all detention ponds with slopes steeper than 3:1 and 100 year ponding depths over 4'.
19)Provide a 12' access easement from a public street to the detention pond.
20)The access route must provide 12' clear width, maximum 15% slope and be appropriately stabilized to accommodate heavy equipment per Section 3.2.1.5(G) of the Georgia Stormwater Management Manual.
21)Provide a 10' easement around the stormwater management facility or lake. The easement should be measured from the 100 year high water elevation.
22)Show the 100 year on the plat
23)Provide a minimum of 1' of freeboard on all detention ponds and water quality ponds.
24)Show the as-built of the outlet control structure detail
25)Show water quality features and the associated easements.
26)Include all details for the water quality features.
27)Add a note: The homeowner’s association is responsible for the maintenance of all stormwater management entities.
28)All required storm drainage easements off of the County right-of-way. The property owner will be required to keep the easement free of obstruction in such a way as to ensure the maximum designed flow at all times. The property owner shall not alter any drainage improvements without the prior written approval from the Cherokee County Engineering Department.
29)For lots upstream of culvert road crossings, a statement shall be provided that finished floor elevations shall be no less than one foot above the low point in the road. Proposed driveway culverts and sizes shall be indicated by a “” Symbol in the note column.
30)Dam breach zone is required if an existing or proposed pond or lake is part of the proposed development and if there are any lots located within the dam breach zone. All lots that are located within a dam breach zone shall be denoted with a ““ symbol. If there is an existing or proposed pond/lake, a geo-technical engineer must certify the integrity of the dam regardless of lot location. Certification that there is not a potential for a “Category 1” structure must be submitted as a part of the LDP review process. (NOTE: Dam breach analysis is not required for dry detention ponds unless otherwise specified in this ordinance).
31)The professional engineer of record currently registered in the State of Georgia shall certify with his seal and signature that the detention pond(s) provides the required storage and outflow rates as required by the approved construction plans and the approved hydrology study for the development. Any modifications to a storm water detention area shall require a revised hydrology study to be submitted. On the final plat.
32)A signed sealed statement by a Professional Engineer, Registered Land Surveyor, or Registered Landscape Architect currently registered in the State of Georgia that the “as-built” condition of the storm drainage system will function as designed and engineered in the approved construction plans.
33)The final plat shall contain a note in the event that underground storm water storage is being provided for the development stating that the maintenance of underground detention facilities is the responsibility of the owner. That the owner agrees to perform annual inspections and provide any necessary maintenance.
34)It is the policy of Cherokee County that drainage easements are dedicated to the public use and are not accepted by Cherokee County for county maintenance and are not considered County property. Therefore, it is Cherokee County policy that no County forces or equipment shall be used to perform construction to any drainage easement within Cherokee County, unless said easement lies within Cherokee County right-of-way and/or said work is necessary to protect County right-of-way per Cherokee County Policy adopted January 14, 1997.
35)All lots are to have a reserve stripe for drainage control, 5’either side of sideProperty lines, 10’ either side of rear property lines and 20’ along exterior(rear) property lines.
36)A Maintenance Agreement is required for this project.
- A draft copy of the required agreement can be downloaded from
- The agreement should be submitted via e-mail or on e-plan solutions for preliminary review and approval. Please note that Exhibits A, B, C, and D must be included and must be applicable to the project under review. After preliminary approval, the original complete document should be submitted to the Engineering Department for signature by the County Engineer and notarizing. Then, the agreement must then be picked up by the applicant and recorded with the Cherokee County Clerk of Court (deeds and records). The original recorded document must then be returned to Cherokee County Engineering prior to issuance of a final plat.
If you have further questions, I may be reached at 678-493-6074 or via e-mail at .
Sincerely,
Ben Morgan, P.E.
Stormwater Engineer
Cherokee County Engineering Department
Cc:File
MonthXX, 2015
Cherokee County Engineering Department
1130 Bluffs Parkway
Canton, Georgia 30114
Project Name – As-built Stormwater Management System Certification Letter
This letter is to confirm that the as-built stormwater management system for the above referenced project was analyzed and is in compliance with the original construction documents and stormwater management report approved by the Cherokee County Engineering Department. The entire stormwater management system, including all conveyance, flowrates, storage, treatment, etc. was evaluated using “as-built” data provided by GA Surveying Company, dated Month XX, 2015. This assessment utilized the same engineering practices outlined in the approved construction documents and stormwater management report. Based on this examination, the entire stormwater management system will function as designed.
If you have further questions, I may be reached at XXX-XXX-XXX or via e-mail at XXXXXXX
Sincerely,
Ga Consulting Engineer, P.E.
NOTE: SEAL SHALL BE SIGNED AND DATED