A. SUBMITTAL REQUIREMENTS

These requirements have been developed in the context of preliminary plat submittal under the Michigan Land Division Act. However, they shall also be followed as closely as possible for all other categories of development, including condominiums, manufactured home communities, and all other site plans.

1. A preliminary plan showing the layout of the area intended to be subdivided or developed will be submitted to the Drain Commissioner's Office by the owner. Plans submitted under the Land Division Act shall be prepared under the direction of, and sealed by, a registered professional engineer or a registered land surveyor. The preliminary plan shall be drawn to a standard engineering scale on sheets not exceeding 24" x 36".

2. Two copies of the preliminary plan, prepared in accordance with the Rules set forth, must be submitted with a letter of transmittal requesting that the preliminary plan be reviewed and, approved. The names of the proprietor and consultants' firm, with mailing addresses, fax and telephone numbers and email for each, must be included with the transmittal.

3. Payment of applicable review fees is required before any review will commence. (See Fee Schedule, Appendix F).

4. The proprietor will describe the mechanism to be established for long-term maintenance of the stormwater management system. The Drain Commissioner's Office will assume responsibility for maintenance oversight if maintenance is to be performed by a private entity. Where jurisdiction exists, in development of plats, the Drain Commissioner may require that a County drainage district be established for future maintenance.

5. Should the proprietor plan to subdivide or develop a given area but also wishes to begin only a portion of the total area, the original preliminary plan must include the proposed general layout for the entire development. The first phase of the subdivision must be clearly superimposed upon the overall plan in order to illustrate clearly the method of development that the proprietor intends to follow. Each subsequent phase will follow the same procedure until the entire area controlled by the proprietor is subdivided.

6. Final acceptance by the Drain Commissioner of the drainage system of only one portion or phase of the subdivision does not ensure final acceptance of any subsequent phases or the overall general plat for the entire area, nor does it mandate that the overall general plat or plan be followed as originally proposed, if deviations or modifications acceptable to the Drain Commissioner are proposed.

7. Preliminary plan approval shall remain in effect for one year. Extensions must be requested in writing.

B. GENERAL INFORMATION REQUIREMENTS

All preliminary plans must include the following information:

1. The location of the proposed development by means of a location map.

2. The proprietor's name, address, telephone and fax numbers.

3. The township, city or village in which the parcel is situated.

4. The section and part of section in which the parcel is situated.

5. The total number of acres to be developed.

6. Existing contours, at 4-foot intervals or less, with U.S.G.S. datum.

7. The proposed drainage system for the development including a preliminary grading plan at 2 foot intervals or less, of the Stormwater facilities with setbacks/easements.

8. The proposed street, alley and lot layouts and dimensions.

9. The location and description of all on-site and adjacent off-site features that may be relevant in determining the overall requirements for the development. These features may include, but are not limited to the following:

a) Adjoining roads, subdivisions, structures, systems and other developments.

b) Schools, parks, and cemeteries.

c) Drains, sewers, water mains, septic fields and wells.

d) High tension power lines, underground transmission lines, gas mains, pipelines or other utilities.

e) Railroads.

f) Existing and proposed easements.

g) Natural and artificial watercourses, wetlands and wetland boundaries, floodplains, lakes, bays, designated drains and lagoons within 500 feet.

h) Vegetation (i.e. forested areas).

i) Soils description of site in accordance with USDA standard soils criteria.

j) Any proposed environmental mitigation features.

10. One boring per 10,000 square feet of basin bottom is required.

11. Boring information required must include:

a) Boring to a depth of 6 feet below the proposed bottom of basin.

b) Classification of soil borings in accordance with USDA Standard Soils Classification System. (available in County Drain Office or @ USDA)

c) Soil profile evaluation shall include:

1. Soil horizon
2. Soil texture
3. Soil structure
4. Soil mottling

d) Submit soil profile evaluation report (see Appendix K)

e) Schedule a site visit with the Drain Commissioner for field verification of soil evaluation prior to construction.

12. The Drain Commissioner's Office will only allow retention basins to be constructed where the soils of the borings meets the USDA classification for sand, loamy sand and sandy loam for the full 6 feet of boring depth. On a case by case basis the Drain Commissioner's office may accept sandy clay loam.

1. For example, a basin with side slope material consisting of soils meeting the above USDA classifications (sand, loamy sand, sandy loam) would be approved. Whereas, a basin with side slope of another material (all other USDA classification) would not be acceptable.

C. DRAINAGE INFORMATION REQUIREMENTS

1. Preliminary calculations used in designing stormwater basins must be submitted to the Drain Commissioner along with plans.

2. All preliminary plans must include the following required stormwater management information:

a) The overall stormwater management system for the proposed development, indicating how stormwater management will be provided and where the drainage will outlet.

b) The location of any on-site and/or off-site stormwater management facilities and appropriate easements that will be dedicated to the entity responsible for future maintenance.

c) A map showing the drainage boundary of the proposed development and its relationship with existing drainage patterns.

3. The volume of water discharged due to development of the site must not create adverse impacts to downstream property owners and watercourses. These adverse impacts may include, but are not limited to flooding, excessive soil saturation, crop damage, soil erosion & or and sedimentation and/or degradation of water quality or habitat.

4. The proposed drainage plan will, in every way feasible, respect and conform to the natural drainage patterns within the site and the watershed in which it is located.

5. In general, the Drain Commissioner will not accept maintenance responsibility for storm sewers and roadside ditches serving public roads. The Kalamazoo County Road Commission maintains these if they are within the right-of-way of a public road.

6. Proposed drainage should complement any local stormwater management plans that may exist and/or comply with any ordinance in effect in the municipality where the proposed development is located.

D. SUBDIVISION PRELIMINARY PLAT APPROVAL

1. The Drain Commissioner will approve or reject a preliminary plat within 30 days of its submittal. If the proposed preliminary plat is not approved as originally submitted the Drain Commissioner will notify the proprietor in writing, setting forth the reasons for withholding approval and will state the changes necessary to obtain approval. Approval of the preliminary plat by all necessary parties is required before the Drain Commissioner will proceed with review of final construction plans.

2. Payment of all fees is required prior to any approvals. (See Fee Schedule, Appendix F)