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8. APPROVAL AND DEDICATION OF PROJECTS WITH PUBLIC SEWERS [Amended. See Section 16]
8.010 General
The District will accept for dedication, all public sewers, pump stations and sewerage treatment facilities within easements
dedicated to the District that have been constructed to the District standards and for which the requirements stated herein
have been met.
The maintenance of these public facilities will remain the responsibility of the project Owner until such time that they have
been accepted for dedication by the District.
8.020 Requirements for Plan Approval and Issuance of Permits
8.020.01 Agreement to Dedicate
An executed "Agreement to Dedicate" will be required for projects involving construction of
public sewer facilities. The District will provide two (2) copies of this document to the Owner
as part of the plan review process. These forms must be executed by the record Owner and
returned to the District. The District will execute the documents and return one (1) copy to the
Owner. Plan Approval will not be given for a project having public sewer facilities until the
"Agreement to Dedicate" has been executed by both parties.
An "Agreement to Dedicate" will not be required from the State of Missouri, any incorporated
municipality, the City of St. Louis or St. Louis County or other tax supported government utility
(school/fire district). All Projects submitted by these entities will be dedicated at the time
construction approval is issued by the District.
8.020.02 Construction Escrow Deposit and Cash Deposit Agreement [See Amendment 2 & 3]
Prior to the issuance of construction permits, a Construction Deposit for all public facilities, as
well as an As-Built Deposit will be required as stated in Chapter 9. In addition, the project
Owner will be required to execute a Construction Deposit Agreement Guaranteeing Completion
of Sewer Improvements. Two (2) copies of this document will accompany the Plan Approval
Notice to the Owner. The agreements must be executed and returned to the District before
construction permits will be issued. One original will be returned to the Owner upon execution
by the District.
8.020.03 Conditional Plan Approval [Amended. See Section 16]
Conditional plan approvals may be issued in very limited instances, with a written agreement
with the District. In such cases an additional Construction Deposit in the amount of $10,000.00,
may be assessed upon compliance with all requirements as noted in the “Conditional Plan
Approval” the District will release the Deposit within fourteen (14) days of review/approval by
the Plan Reviewer.
8.020.04 Flexibility for BMP Permitting and Inspection [Added by Amendment 2]
Developments with BMPs placed on each lot but for which no new public sewers are constructed
may be divided into individual “P#’s” for the purpose of tracking BMP inspections and
collecting and releasing the BMP deposits. The Developer’s Engineer shall indicate the
Developer’s interest to do this prior to plan approval. Once plans are approved, these requests
cannot be accommodated.
Additional administrative costs are required to provide for this flexibility. These costs will
generally include a submittal fee and review fee proportional to the level of effort required to set
up each individual “P#”, the amount to be determined on a case-by-case basis.
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8.030 Requirements for Construction Approval
8.030.01 Construction Inspection
All public sewer facilities must be inspected by the District. It is the responsibility of the
Owner's Contractor to contact the District's Construction Department to arrange for this
inspection. The District will not grant Construction Approval for any public sewer facilities,
which were not constructed in accordance with approved plans and with the District inspection.
The District will not allow the physical connection of the new public sanitary sewer construction
to the existing system until construction approval has been given. Occupancy permits will be
withheld by St. Louis County or the local municipality until Construction Approval is given.
8.030.02 Field Changes and Plan Revisions
It is the intent and purpose of "Field Change" approvals to minimize the need for a formal plan
revision for minor changes to the approved plans, and to minimize delays in construction. The
following are the general procedures for processing a Field Change.
1. Initial requests for a change may be made verbally to the Engineering Department by the
Owner, the Owner's Engineer or the Owner's Contractor, and followed up with a letter of
request for file documentation. The petitioner should state the requested changes and the
reason for the change.
2. Upon receipt of the request, the District will evaluate the proposed change to determine if it
is to be allowed. In addition, if the request is made by someone other than the Owner's
Engineer, the District will formally contact the Engineer to obtain authorization for the
change, and request a letter of authorization for file documentation.
3. If determined to be necessary, revised hydraulic calculations may be required from the
Owner's Engineer.
4. If the change is allowed, the Owner's Engineer will be required to submit the “required
number” sets of the plan sheet(s) indicating the change. These plans may be copies of the
original plans with the change noted in red. On occasion 11” X 17” excerpts of the original
plan sheet(s) may be allowed. They should be to original scale and sealed.
5. The Engineering Department will notify the Construction Department of the approved field
change and send copies of the changed plans to the appropriate District personnel, the
Owner, Engineer, Contractor and municipal agencies.
6. The Contractor will be responsible for payment of all inspection fees associated with the
change prior to Construction Approval.
7. Field changes must be indicated on the "As-Built" drawings.
Significant change(s) to the HGL; the need for additional special structure(s), or additional
permit(s) or significant fees or deposits; or, significant revisions to the project or missing
requirements will preclude use of a “field change” format. In that case a formal plan revision will
be necessary, instead.
8.030.03 As-Built Drawings
As-built drawings and State Plane Coordinates, certified by a Land Surveyor or Engineer
registered in the State of Missouri, must be submitted to the District for review and acceptance
prior to construction approval. As a minimum, the following information shall be provided for
the As-Builts:
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1. Storm, Sanitary and Combined Sewers
As-built drawings and State Plane Coordinates shall indicate the vertical and
horizontal location of the storm, sanitary and combined sewers and structures
in plan and profile view, including any and all changes from the Approved
Plans and “Field Changes”. Special attention shall be paid to situations where
sewers have moved out of easements. In those cases, additional easement(s) to
be obtained must be so shown and so labeled.
2. Detention Basin
a. A field survey of the basin shall be made to confirm the basin's location, size,
shape and depth. As a minimum the as-built drawings and State Plane
Coordinates shall include:
(1). As-built cross-sections of the basin plotted over the design cross-
sections.
(2) Spot elevations shown in plan, defining the location and elevation of
the basin berm and overflow spillway.
(3) Location, length, size, shape and flowline elevation of the detention
basin concrete swale.
(4) Control and overflow structure location, configuration, size,
elevations, and any other information relevant to the proper
operation of the structure (i.e.; opening size; low flow and outlet pipe
size, slope and flowline and sill, orifice, weir elevations; etc.).
b. Based on the field survey information, an elevation vs. storage table or curve
of the detention basin should be submitted.
c. Should the District be concerned that the as-built detention basin varies
significantly enough from the approved basin design that it may not function
as designed the District will require that new detention calculations be
submitted for review. Based on this review, modifications to the detention
basin may be required before acceptance of the as-built plans and release of
any escrow.
3. Pump Station Construction
a. As-Built Drawings and State Plane Coordinates shall indicate the physical
location of the pump station, retention, access road force main, tuned locator
markers and other related structures.
b. Shop Drawings of all structures.
c. Equipment manuals and pump operating curves for any items which differ
from the original design as a result of a field change.
d. For the pump(s) actually installed, and at the end of the job and in addition to
the Manual and pump curve(s) from the equipment supplier, also provide the
District Pump Station Division with pump serial number(s), model number,
impeller trim, et cetera.
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e. The pump(s) will need to be run under actual conditions. Actual discharge
pressures will then be used to determine actual operating point on the curves.
Pumps running at the end of the curve will not be accepted.
4. Subdivision Plats
A recorded copy of the subdivision plat must be submitted with the As-Built drawings.
5. Geotechnical Engineer's Certification
Geotechnical Engineer's Certification will be required verifying that all work associated
with the treatment of sinkholes, placement of compacted fill, and other soils-related
work was completed in accordance with the approved Geotechnical Report.
6. State Plane Coordinates
State Plane Coordinates as detailed below, are required on all improvements
requiring As-built Drawings by the District.
a. Horizontal Data
All horizontal data provided on facilities will be in State Plane Coordinates –
Missouri East Zone, NAD 83(HARN). All horizontal coordinates provided
shall have an accuracy of 50mm.
b. Vertical Data
All vertical data provided on facilities will be according to the NGVD29 (St.
Louis County & St. Louis City Benchmark Books Datum). All vertical data
shall have an accuracy of 60mm.
c. Deliverables
An electronic points file of all state plane information will be required. The
electronic points file shall be delivered as electronic media along with as-built
drawings. The format for the electronic points file should be as follows:
Electronic points file: Comma delimited text file with the extension of file type
of ASC. The format of the file should be:
Point, Northing, Easting, Elevation, Description (P, N, E, Z, D)
Point: Survey point number
Northing: Horizontal Data for Northing of State Plane coordinate
Easting: Horizontal Data for Easting of State Plane coordinate
Elevation: Vertical Data for Elevation of Top of Structure, Manhole Lid, etc.
Description: Identifying number assigned to structure or location that
corresponds with the plans.
Example: File name: P-12345-00.ASC
Sample: 22, 1020432.283, 850432.952, 501.82, MH 23
23, 1020641.663, 850350.877, 503.96, MH 24
24, 1022447.353, 848806.986, 507.24, MH 25
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8.030.04 Stormwater Quality Management Facilities and Construction Cash Deposit Agreement
[Added by Amendment 2, Amended by Amendments 3 and 5]
Construction of Stormwater Quality Management Facilities is not required for construction
approval. However, prior to the issuance of construction approval items a.) and b.) below shall
be completed:
a. The project owner shall execute a "Construction Deposit Agreement Guaranteeing
Completion of Stormwater Quality Management Facilities". Two (2) copies of this
document will accompany the Plan Approval Notice to the Owner. This document
must be executed and returned to the District before construction approval will be
issued. One original will be returned to the Owner upon execution by the District.
b. The project owner shall provide a construction deposit for all stormwater quality
management facilities, as stated in Chapter 9.
c. BMP permits shall be obtained prior to BMP construction. The permittee shall
apply for all stormwater BMP permits. The owner executed “Construction Deposit
Agreement Guaranteeing Completion of Stormwater Quality Management
Facilities" and associated deposit shall be provided to MSD before stormwater
BMP permits are issued. [Modified by Amendment 5]
8.030.05 Notification of Construction Approval [See Amendment 2]
The District will notify the Owner and the Owner's Contractor when construction approval is
given. In addition, St. Louis County or the local municipality will be notified that occupancy
permits may be released.
8.040 Requirements for District Approval of Stormwater Quality Management Facility Construction [Added by
Amendment 2]
8.040.01 Construction Inspection [See Amendment 3]
All permitted stormwater quality management facilities must be inspected by the District. It is the
responsibility of the Owner's Contractor to contact the District's Construction Department to
arrange for this inspection.
The District will issue a “BMP Construction Completion Letter” when its inspection indicates
that stormwater quality management facilities were constructed satisfactorily and in compliance
with approved plans. The District will not issue a BMP Construction Completion Letter for any
facilities which were not constructed in accordance with approved plans and without District
inspection. No portion of the Stormwater Quality Management Facilities Construction Deposit
will be released without the District issuing the BMP Construction Completion Letter.
Stabilization of the drainage area tributary to stormwater quality management facilities is very
important to the facility’s function. The District will also perform an inspection of the drainage
area tributary to stormwater quality management facilities. The District’s determination of
drainage stability will be determined when the drainage area’s final landscape cover is
established. Any vegetated covers should provide a uniform, evenly distributed final vegetative
cover with a minimum density of 80 percent. MSD reserves the ability to require additional site
stabilization measures, where construction sediment or other construction materials are affecting
BMP performance.
8.040.02 Field Changes and Plan Revisions
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Requirements for field changes and plan revisions for stormwater quality management facilities
are the same as those listed in 8.030.
8.040.03 As-Built Drawings [See Amendment 2, Section 16]
As-built drawing requirements for stormwater quality management facilities are similar as those
listed in 8.030 for detention basins. As-built drawings shall be submitted to the District for
review and acceptance prior to issuance of the BMP Construction Completion Letter.
MSD may waive as-built drawings for stormwater BMPs on a case-by-case basis. In general, this
waiver will be limited to smaller surface BMPs that serve small, controlled drainages (e.g.,
bioretention fed by roof downspouts). This waiver, when applicable, will be noted by MSD on
approved plans.
8.050 Dedication and Release of Construction Deposit [See Amendment 2 & 3]
8.050.01 Residential and Commercial Subdivisions, Apartments and Condominiums [See
Amendment 2]
B. Initial Dedication Inspection
Upon completion of fifty percent (50%) of the lots in the total residential or commercial
subdivision, or fifty percent (50%) of the buildings in an apartment or condominium
development, the District will perform a dedication inspection upon receipt of a written
request from the Owner.
1. If there are no deficiencies, the District will release one-half of the monies
held in deposit within fourteen (14) days of the receipt of a properly executed
"Sewer Dedication Agreement" form.
2. If deficiencies are noted within the system, the Owner has ninety (90) days to
correct these deficiencies.
a. If the deficiencies are not corrected within this period, the District
will contact St. Louis County or the local municipality and request
that all unissued building permits and occupancy permits be withheld
until the deficiencies are corrected. Extensions may be granted for
inclement weather or other extenuating circumstances.
b. Upon correction of the deficiencies, the Owner will be responsible
for requesting a reinspection of the system.
c. The District will release one-half of the within fourteen (14) days of
the second inspection, provided all deficiencies have been corrected
to the District's satisfaction and receipt of a properly executed
"Sewer Dedication Agreement" form.
B. Final Dedication Inspection
Upon completion of one hundred percent (100%) of the lots in the total residential or
commercial subdivision, or one hundred percent (100%) of the buildings in an
apartment or condominium development, and within three (3) years of the execution of
the Cash Deposit Agreement, the District will perform a final dedication inspection
upon receipt of a written request from the Owner.
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1. If there are no deficiencies, the District will release the remaining
Deposit within fourteen (14) days of the inspection, provided both
the Owner and the District execute a Sewer Dedication Agreement
(if not already executed at the fifty percent (50%) completion stage).
2. If deficiencies are noted within the system, the Owner must correct
these deficiencies before the remaining monies will be released.
a. Upon correction of the deficiencies, the Owner will be
responsible for requesting a reinspection of the system.
b. The District will release the remaining Deposit and within
fourteen (14) days of the second inspection, provided all
deficiencies have been corrected to the District's
satisfaction, and the Sewer Dedication Agreement is
executed by both the Owner and the District (if not already
executed at the fifty percent (50%) completion level).
c. Fees for multiple inspections will be required as stated in
sub-section 8.040.03.
3. If the development is not completed within three (3) years of the
execution of the Cash Deposit Agreement, the remaining Deposit
will not be returned to the Owner and will be used by the District, at
it's discretion and in any manner the District sees fit, to complete any
improvements or correct deficiencies.
8.050.02 Sewer Extensions and Single Lot Developments [See Amendment 2]
The District may release fifty percent (50%) of the Deposit for small sewer extensions and single
lot commercial and residential developments at the time of construction approval, provided the
“Sewer Dedication Agreement" is executed by both the Owner and the District.
The remaining fifty percent (50%) would be released as stated in 8.040.01.B - Final Dedication
Inspection.
8.050.03 Dedication Inspection Fees [See Amendment 2]
A. All projects with public sewer facilities will receive a total of four (4) dedication
inspections (four (4) for Pump Station inspections) by the District without charge as
follows:
1. The first inspection and the reinspection at the fifty percent (50%)
development completion.
2. The first inspection and the reinspection at the one hundred percent (100%)
development completion.
3. One inspection and one reinspection at each stage of the pump station
construction.
Inspection fees, as determined by the District, will be required for each additional inspection.
The amount of these fees will be deducted from the Deposit to be released to the Owner.
8.060 Pump Stations [See Amendment 2]
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Pump Stations will be accepted for dedication upon Construction Approval of the project. The “Sewer Dedication
Agreement” for pump stations constructed as part of a subdivision, apartment or condominium project will not be executed
until all items in 8.040.01 have been completed.
The District will release the Pump Station Deposit upon completion of the two stages of the pump station construction as
described below.
The Owner must submit a written request to the Escrow Section of the Engineering Department for inspection and release of
the Pump Station Deposit. Only one (1) inspection may be requested within a thirty (30) day period.
The inspection and release of the Deposit will be made only if the District agrees that the necessary work is complete and no
discrepancies have been identified.
Pump Station Deposit Account:
A. Stage One
1. “Fifty percent (50%) Inspection” and Release of Deposit
a. One hundred percent (100%) of the construction of the pump station structure, storage
tank, force main and pump bases. This inspection requires the wet well floor to be dry.
B. Stage Two
1. “One hundred percent (100%) Inspection” and Release of Deposit
a. All electrical and mechanical equipment installed and in operating condition. All
paving, fencing, site restoration, and any additional easement requirements completed
and written notice of Construction Approval. Operation of the pumps must be within
acceptable limits of pump curves. Flow into station must be less than or equal to
projected flow. Flow must be free from excessive grease and other foreign substances.
b. Letter of completion from installing paving contractor, guaranteeing all pavement and
pavement subsurfaces have been installed per the District Pump Station Design
Requirements document.
8.070 Abandonment of Work [See Amendment 2]
Upon receipt of a written statement from the Owner that further work on the project has been abandoned, the District shall
determine whether or not the uncompleted work is required to ensure the public health, safety and welfare. Should it be
determined that completion of the work is necessary, the District shall utilize the monies deposited in the Construction
Deposit for the project to complete this work.
Should the District determine that the completion of the work is not required; the Construction Deposit shall be released in
accordance with Section 8.040.
8.080 Release of Stormwater Quality Management Facilities Construction Deposit [Added by Amendment 2,
Amended by Amendment 3 ]
The District will release up to seventy-five percent (75%) of the deposit upon issuance of BMP Construction Completion
Letter. For sites with multiple (more than four (4)) permitted BMPs, the District will consider proportionally releasing the
deposit at twenty-five percent (25%) and fifty (50%) percent of the total number of BMPs constructed.
Where dedication of public sewers is not required, the District will also perform an inspection of the drainage area tributary
to stormwater quality management facilities. MSD will hold the balance of the stormwater quality management facility
deposit until the BMP drainage areas (for which the developer has disturbed or has reasonable control over) is sufficiently
stable for stormwater quality management facility operation and all BMPs are functioning properly.
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Where dedication of public sewers is required, the District will perform the inspection of the drainage area tributary to
stormwater quality management facilities as part of the dedication inspection process. The balance of the BMP deposit will
be released as part of the dedication process.