A. 
A developer shall not engage in any development without first receiving a stormwater permit from the Township pursuant to § 388-7.
B. 
The granting of a stormwater permit shall authorize only such development for which the permit is required, subject to the terms of the permit, and it shall not be deemed to approve other development or other land use activities.
The Township shall grant a stormwater permit, which may impose terms and conditions in accordance with § 388-14, and which shall be granted only upon compliance with each of the following requirements:
A. 
The developer has submitted a drainage plan complying with § 388-8.
B. 
The drainage plan contains a description of an adequate, temporary stormwater retention system to prevent construction site stormwater runoff, satisfying the requirements of § 388-10, and the developer has obtained a soil erosion permit, if necessary.
C. 
One of the following conditions is satisfied:
(1) 
The developer provides:
(a) 
A permanent on-site stormwater system sufficient to provide, as required in the reasonable discretion of the Township, either on-site detention or on-site retention of stormwater runoff in a twenty-five-year storm event; and
(b) 
A direct connection for all stormwater runoff that will be discharged from and through the development site in a one-hundred-year storm event; or
(2) 
The developer provides a permanent on-site stormwater system with a restricted outlet designed to result in no net increase in stormwater runoff volume or rate onto any adjacent property in a one-hundred-year storm event.
D. 
The developer has paid or deposited the stormwater permit review fee pursuant to § 388-9.
E. 
The developer has paid or posted the applicable financial guarantee pursuant to § 388-11.
F. 
The developer provides all easements necessary to implement the approved drainage plan and to otherwise comply with this chapter including, but not limited to, § 388-40. All easements shall be acceptable to the Township in form and substance and shall be recorded with the Kent County Register of Deeds.
G. 
The drainage plan is designed in conformity with the Township's design and performance standards for drains and stormwater management systems, as set forth in Article VIII.
H. 
All stormwater runoff facilities shall be designed in accordance with the then-current BMPs.
I. 
The developer provides the required maintenance agreement for routine, emergency, and long-term maintenance of all stormwater runoff facilities and in compliance with the approved drainage plan and this chapter including, but not limited to, § 388-41. The maintenance agreement shall be acceptable to the Township in form and substance and shall be recorded with the Kent County Register of Deeds.
The developer shall provide a drainage plan to the Township for review and approval by the Township. The drainage plan shall identify and contain all of the following:
A. 
The location of the development site and water bodies that will receive stormwater runoff.
B. 
A drawing showing the existing and proposed topography of the development site, including the alignment and boundaries of the current and proposed natural drainagecourses; provided, however, that:
(1) 
With respect to only an individual single-family detached dwelling located 500 feet or less from a water body and with respect to only a two-family detached dwelling located 500 feet or less from a water body:
(a) 
Such drawing shall be sufficiently detailed, and shall depict topographic contours at maximum intervals of two feet (using USGS datum), so as to enable the Township to determine accurately the current and proposed location and elevation of drainagecourses on the development site. The method of preparation of the topographic drawing, and the source of the data determining the topographic contours, may vary, but the drawing shall be subject to Township approval as to whether it accurately represents, and effectively depicts, the current and proposed contours and drainagecourses. Among other sources and methods, the topographic drawing may be prepared using registered survey information, data compiled in the Grand Valley Regional Geographic Information System (REGIS) or such other source of information or method of depiction that the Township determines to be sufficiently accurate and reliable for the purposes of this chapter.
C. 
The development tributary area to each point of discharge from the development.
D. 
Calculations for the final peak discharge rates.
E. 
Calculations for any facility or structure size and configuration.
F. 
A drawing showing all proposed stormwater runoff facilities with existing and final grades.
G. 
The sizes and locations of upstream and downstream culverts serving the major drainage routes flowing into and out of the development site. Any significant off-site and on-site drainage outlet restrictions other than culverts should be noted on the drainage map.
H. 
An implementation plan for construction and inspection of all stormwater runoff facilities necessary to the overall drainage plan, including a schedule of the estimated dates of completing construction of the stormwater runoff facilities shown on the plan and an identification of the proposed inspection procedures to ensure that the stormwater runoff facilities are constructed in accordance with the approved drainage plan.
I. 
A plan to ensure the effective control of construction site stormwater runoff and sediment track-out onto roadways.
J. 
Drawings, profiles, and specifications for the construction of the stormwater runoff facilities reasonably necessary to ensure that stormwater runoff will be drained, stored, or otherwise controlled in accordance with this chapter.
K. 
A maintenance agreement, in form and substance acceptable to the Township, for ensuring maintenance of any privately owned stormwater runoff facilities. The maintenance agreement shall include the developer's written commitment to provide routine, emergency, and long-term maintenance of the facilities and, in the event that the facilities are not maintained in accordance with the approved drainage plan, the agreement shall authorize the Township to maintain any on-site stormwater runoff facility as reasonably necessary, at the developer's expense.
L. 
The name of the engineering firm and the registered professional engineer that designed the drainage plan and that will inspect final construction of the stormwater runoff facilities.
M. 
All design information must be compatible for conversion to Grand Valley Regional Geographic Information System (REGIS).
N. 
Any other information necessary for the Township to verify that the drainage plan complies with the Township's design and performance standards for drains and stormwater management systems.
A. 
All expenses and costs incurred by the Township directly associated with processing, reviewing and approving or denying a stormwater permit application shall be paid (or reimbursed) to the Township from the funds in a separate escrow account established by the developer, as provided in Subsection B. The Township may draw funds from a developer's escrow account to reimburse the Township for out-of-pocket expenses incurred by the Township relating to the application. Such reimbursable expenses include, but are not limited to, expenses related to the following:
(1) 
Services of the Township Attorney directly related to the application.
(2) 
Services of the Township Engineer directly related to the application.
(3) 
Services of other independent contractors working for the Township which are directly related to the application.
(4) 
Any additional public hearings, required mailings and legal notice requirements necessitated by the application.
B. 
At the time a developer applies for a stormwater permit, the developer shall deposit with the Township Clerk, as an escrow deposit, an initial amount as determined by resolution of the Township Board for such matters and shall provide additional amounts as requested by the Township in such increments as are specified in said resolution (if the developer makes an escrow deposit for zoning purposes, any funds deposited for stormwater permit purposes may be maintained and accounted for in the zoning escrow account). Any excess funds remaining in the escrow account after the application has been fully processed, reviewed, and the final Township approval and acceptance of the development has occurred will be refunded to the developer with no interest to be paid on those funds. At no time prior to the Township's final decision on an application shall the balance in the escrow account fall below the required initial amount. If the funds in the account are reduced to less than the required initial amount, the developer shall deposit into the account an additional amount as determined by the Township Board resolution, before the application review process will be continued. Additional amounts may be required to be placed in the escrow account by the developer, at the discretion of the Township.
Prior to making any earth change on a development site regulated by this chapter, the developer or other person making an earth change shall first obtain a soil erosion permit issued in accordance with Part 91 of Act No. 451 of the Public Acts of 1994,[1] as amended, if one is required. The developer or other person making an earth change shall install stormwater runoff facilities and shall phase the development activities so as to prevent construction site stormwater runoff and off-site sedimentation. During all construction activities on the development site, the Township Engineer may inspect the development site to ensure compliance with the approved construction site runoff controls.
[1]
Editor's Note: See MCL 324.9101 et seq.
A. 
The Township Engineer shall not approve a stormwater permit until the developer submits to the Township, in a form and amount satisfactory to the Township, a letter of credit or other financial guarantee for the timely and satisfactory construction of all stormwater runoff facilities and site grading in accordance with the approved drainage plan. Upon certification by a registered professional engineer that the stormwater runoff facilities have been completed in accordance with the approved drainage plan including, but not limited to, the provisions contained in § 388-8H, the Township may release the letter of credit, or other financial guarantee subject to final Township acceptance and approval.
B. 
Except as provided in Subsection C, the amount of the financial guarantee shall be $10,000, unless the Township determines that a greater amount is appropriate, in which case the basis for such determination shall be provided to the developer in writing. In determining whether an amount greater than $10,000 is appropriate, the Township shall consider the size and type of the development, the size and type of the on-site stormwater system, and the nature of the off-site stormwater runoff facilities the development will utilize.
C. 
The Township Supervisor, or such other Township official determined by the Township Board, may reduce or waive the amount of the financial guarantee for a development that will not increase the percentage of impervious surface of the development site by more than 10%.
D. 
This chapter shall not be construed or interpreted as relieving a developer of its obligation to pay all costs associated with on-site private stormwater runoff facilities as well as those costs arising from the need to make other drainage improvements in order to reduce a development's impact on a drain consistent with adopted design standards.
No certificate of occupancy shall be issued until stormwater runoff facilities have been completed in accordance with the approved drainage plan; provided, however, the Township may issue a certificate of occupancy if an acceptable letter of credit or other financial guarantee has been submitted to the Township, for the timely and satisfactory construction of all stormwater runoff facilities and site grading in accordance with the approved drainage plan.
Stormwater runoff facilities, after construction and approval, shall be maintained in good condition, in accordance with the approved drainage plan, and shall not be subsequently altered, revised or replaced except in accordance with the approved drainage plan, or in accordance with approved amendments or revisions in the plan.
In granting a stormwater permit, the Township may impose such terms and conditions as are reasonably necessary to effectuate the purposes of this chapter. A developer shall comply with such terms and conditions.