1a.1. Knob Hill: Final Plat.CITY OF
CHANHASSEN
690 COULTER DRIVE • P.O. BOX 147 0 CHANHASSEN, MINNESOTA 55317
(612) 937 -1900 • FAX (612) 937 -5739
MEMORANDUM Action by City Administrator
TO: Don Ashworth, City Manager Endorsed >/ 1>J A
Ntodifi cd---- ---- -�
FROM: Bob Generous, Senior Planner Re;e tad.
Nte Sub;lu`.ted to Commissiort
DATE: May 15, 1996
Date Submitted to Council
SUBJ: Final Plat Approval for Knob Hill 5 - 9, 4 - f
BACKGROUND
On February 26, 1996, the City Council approved the preliminary plat for Subdivision #95 -20
(Knob Hill) for 12 lots, and associated right -of -way, plans dated Jan. 1996, prepared by William R.
Engelhardt Associates, Inc.; and a front yard setback variance of 10 feet and a variance to the
wetland setback of 10 feet for Lots 5 and 6, Block 2, subject to the following conditions:
1. Full park and trail fees shall be paid per city ordinance in lieu of land dedication.
2. A minimum 40 foot building setback (10 foot buffer and 30 foot setback from buffer line)
shall be maintained from the wetland on Lots 5 and 6, Block 2.
3. A Tree Conservation Easement shall be designated on the southern and eastern wooded
areas on Lot 5, Block 1. The applicant shall prepare a legal description and survey for
this easement for city approval.
4. Fifteen foot tree removal limits shall be required' around the building pads °on Lots 3 and
4, Block 2. This tree removal limit shall be shown on the building permit application for
each lot. All lots shall show existing trees on building permit application surveys.
5. The applicant is required to plant 37 trees as replacement and reforestation plantings.
Trees must be selected from the City's Approved Tree List.
6. Any proposed entrance monument must comply with city code. A separate sign permit
must be submitted to the city.
Mr. Don Ashworth '
May 15, 1996
Page 2 '
7. Submit street names and turning radius dimensions to the Public Safety ]Department,
Inspections Division for review prior to final plat approval. '
8. Revise the preliminary grading plan to show the location of proposed dwelling pads, using
standard designations and the lowest level floor and garage floor elevations. This should be
done prior to final plat approval.
9. Obtain demolition permits. This should be done prior to any grading on the property. ,
10. The applicant will need to develop a sediment and erosion control plan in accordance with
the City's Best Management Practice Handbook and the Surface Water Management Plan
requirements for new developments. The plan shall be submitted to the City for review and
formal approval. Type I erosion control fence shall be installed around the downstream side
'
of the construction limits and Type III erosion control along the perimeter of the wetlands.
Rock construction entrances shall be employed and maintained at all access points until the
street has been paved with a bituminous surface.
11. All areas disturbed as a result of construction activities shall be immediately restored with
seed and disc - mulched or wood -fiber blanket or sod within two weeks of completion of
each activity in accordance with the City's Best Management Practice Handbook.
12. The applicant shall provide detailed storm sewer calculations for 10 -year and 100 -year
storm events and provide ponding calculations for stormwater ponds in accordance with the
City's SWMP for the City Engineer to review and approve prior to final plat approval. The
applicant shall provide detailed pre - developed and post developed stormwater calculations
,
for 100 -year storm events and normal water level and high water level calculations in
existing basins, created basins, and or creeks. Individual storm sewer calculations between
each catch basin segment will also be required to determine if sufficient catch basins are
'
being utilized. In addition, water quality ponding design calculations shall be based on
Walker's Pondnet model. The sediment pond shall be designed adjacent to the wetland on
Lot 5, Block 2 outside the street right -of -way. A wet meadow seed mix :should be used to
'
encourage native plants in and around the wetland.
13. The applicant shall enter into a development contract with the City and provide the
necessary financial security to guarantee compliance with the terms of the development
contract.
'
14. The applicant shall apply for and obtain permits from the appropriate regulatory agencies,
i.e. Watershed District, Metropolitan Waste Control Commission, Health. Department,
Minnesota Pollution Control Agency, Minnesota Department of Natural Resources and
Army Corps of Engineers and comply with their conditions of approval. '
' Mr. Don Ashworth
May 15, 1996
' Page 3
' 15. The appropriate drainage and utility easements should be dedicated on the final plat for all
utilities and ponding areas lying outside the right -of -way. The easement width shall be a
minimum of 20 feet wide. Consideration shall also be given for access for maintenance of
the ponding areas.
' 16. Wetland buffer areas shall be surveyed and staked in accordance with the City's wetland
ordinance. The City will install wetland buffer signs before accepting the utilities and will
charge the applicant $20 per sign.
' 17. The lowest floor elevation of all buildings adjacent to wetlands and storm ponds shall be a
minimum of 2 feet above the 100 -year high water level.
' 18. Existing wells and/or septic systems on site will have to be properly abandoned in
accordance to City and Minnesota Department of Health codes /regulations.
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19. The proposed single family residential development of 7.69 developable acres is
responsible for a water quality connection charge of $6,152 and a water quantity fee of
$15,226. These fees are payable to the City prior to the City filing the final plat. Credits
will be given to these fees based on the applicant providing for the City's SWMP
requirements and will be deducted from the totals after final plat review.
20. The applicant shall report to the City Engineer the location of any drain tiles found during
construction and shall re- locate or abandon the drain tile as directed by the City Engineer.
21. Retaining walls shall be employed in the rear yards of Lots 2 and 3, Block 1 and street
grades modified to be more conducive with existing grades.
22. Individual grading, drainage, tree preservation, and erosion control plans will be required
for Lots 1, 2, and 5, Block 1, and Lots 2, 3, and 4, Block 2, at the time of building permit
application for the City to review and approve.
23. The public street and utility system shall be constructed in accordance with the City's street
and utility standards. The private streets shall be constructed in accordance with current
city ordinances. Detailed construction plans and specifications shall be submitted for staff
review and formal approval by the City Council in conjunction with final plat approval.
The plans shall be designed in accordance with the latest edition of the City's standard
specifications and detail plates. Final plat approval is contingent upon approval of the
construction plans by the Chanhassen City Council.
Mr. Don Ashworth
May 15, 1996
Page 4
24. Fire hydrants shall be installed with 300 feet maximum spacing. A ten. foot clear space
must be maintained around fire hydrants.
25. Delete Outlot A and combine with the adjacent Lots and dedicate a 30 foot private street
easement over Lots 1 and 2, Block 2, for ingress and egress.
26. The applicant's engineer shall work with city staff in revising the construction plans to
minimize grading on the site.
27. The temporary cul -de -sac shall be made to look permanent and setback: the appropriate
amount, i. e., 20 to 30 feet, from the Donovan property.
28. The developer shall include a covenant to inform future property owners of the possible
road connection into the Donovan property.
FINAL PLAT
PROPOSAL SUMMARY
The applicant is requesting final plat approval for Subdivision #95 -20 (Knob Hill) for 12 lots, and
associated right -of -way on 8.35 acres.
LANDSCAPING/TREE PRESERVATION
Existing tree cover of the site is approximately 45% and consists mainly of oak, maple,
basswood, box elder, elm, hickory and cherry. There are also a few cedar and pines located near
the existing homestead. Very large, mature oaks, basswood and maple are located near the
house and along the driveway. On the property, there are a total of ten trees that are over 30
inches in diameter. Grading and house pads will require the removal of half of those trees. The
remaining half are located on the southern half Lot 5, Block 1. Staff proposes that a conservation
easement be placed over the eastern and southern sections of Lot 5, Block 1. The other lots with
significant tree cover are Lots 3 and 4, Block 2. Lots 3 and 4, Block 2, should have 15 foot tree
removal limits placed around the proposed building pads.
Of the existing 3.52 acres of canopy coverage, approximately 1.60 acres will be removed. The
required canopy coverage for the site is 35 %, or 2.69 acres. Since the existing canopy coverage
exceeds the target canopy coverage, there is no forestation requirement for the site. The
applicant will have only 1.92 acres of canopy coverage after grading and construction. The
difference between the required coverage and the proposed is .77 acres. Since the applicant is
removing required canopy coverage, the difference is multiplied by 1.2 and becomes .924 acres.
Therefore, the applicant is required to plant 37 trees for canopy replacement on site.
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' Mr. Don Ashworth
' May 15, 1996
Page 5
t WETLANDS/WETLAND ALTERATION PERMIT
' There are two jurisdictional wetlands on -site. Wetland 1 is an ag/urban wetland located between
Lots 2, 3, 4 ,5, 6, and 7, Block 2, and is approximately 0.66 acre. This wetland has been identified
as type 2/1. There were no wetland impacts proposed on the approved preliminary plat. However,
' the final plat drawings propose filling 1,600 square feet of this wetland to construct the storm water
pond.
' On April 12, 1996, the Governor of Minnesota signed into law amendments to the 1991 Wetland
Conservation Act. The new rules will be in effect for the next 60 days along with the existing
laws. In a memo from the Minnesota Board of Soil and Water Resources, we have received the
' following interpretation for this interim period: "Projects approved before April 12th can be
completed as approved or if there is an advantage for the landowner to follow the new law they
can choose to cancel previously obtained approvals and request new approvals based on the
' amended law if the project has not been completed." The new law increases the de minimis
exemption (the amount of impact not regulated) from 400 square feet to 2,000 square feet. It is
under these conditions that the developer has proposed to increase wetland impacts on the final
' plat.
' The City of Chanhassen ordinances are written to comply with the 1991 version of the Wetland
Conservation Act. Because the City of Chanhassen has not adapted these changes to it's
ordinances, we have asked for a Wetland Alteration Permit and mitigation plan as an additional
t condition of final plat approval. If the wetland alteration permit is not approved, then Lot 5,
Block 2, will no longer be a buildable lot since the required water quality pond will need to be
located in this area. City staff has received a permit application and the item is scheduled for the
June 5, 1996 Planning Commission meeting for review. In addition to a Wetland Alteration
Permit, mitigation at a 2:1 ratio will be required. The final plans shall provide a buffer strip of 0 to
20 feet wide with an average width of 10 feet around this wetland.
' Wetland 2 is a 370 square foot ag /urban wetland located between Lots 1 and 2 of Block 2. This
wetland will be filled as a result of the development, but since it is less than 400 square feet it is
' exempt from the Wetland Conservation Act. Type III erosion control is required along the entire
length of the wetland adjacent to construction activities until vegetation is re- established.
GRADING
Staff has worked with the developer's engineer in minimizing site grading. The grading limits
' adjacent to the Donovan parcel have been reduced to leave a 10 -foot to 15 -foot wide natural
buffer strip. Groups of trees will be preserved on Lots 1, 2 and 3, Block 1 by adjusting the
' dwelling type and elevation. The need for retaining walls has been eliminated.
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Mr. Don Ashworth
May 15 1996
Page 6
Lots 2, 3 and 4, Block 2 will be custom graded at time of building permit issuance. Staff has
placed a condition that these lots will require detailed grading, drainage, erosion control and tree
protection plans to be submitted to the City for review and approval by the City prior to issuance
of a building permit.
Since the development will be delayed due to a wetland alteration permit, staff is comfortable in
allowing the applicant to proceed with site grading, except the wetland encroachment which is
contingent on approval of the wetland alteration permit from the City, before the plat is recorded
upon the applicant entering into the development contract with the City and providing the
financial security and administration fees.
DRAINAGE
A water quality pond is proposed on Lot 5, Block 2 to pretreat runoff from approximately one-
third of the site. If the wetland alteration permit is not approved, then Lot 5, Block 2, will no
longer be a buildable lot since the required water quality pond will need to be located in this area.
The remaining two - thirds will drain overland to the wetland. The yard areas will provide some
pretreatment; however, staff believes it doesn't qualify for a credit against the applicant's storm
water quality fees. Staff has calculated the applicant's storm water management fees based on
the final construction plans. The applicant will be responsible for a SWMP fee of $17,266. This
fee is payable to the City at time of final plat recording.
A small drainage swale is proposed through Lot 1, Block 2 to convey runoff from the private
street to the wetland. A 20 -foot wide drainage easement needs to be dedicated on the final plat to
preserve the drainage way.
A drain tile system has been included in the construction plans to accommodate sump pump
discharge from the homes north of Knob Hill Lane.
UTILITIES
The applicant's engineer has submitted detailed construction plans and specifications for staff
review and City Council approval. Staff has reviewed the plans and specifications and finds
them in general conformance with City standards.
The existing home on Lot 5, Block 1 is proposed to be razed. The well and septic system shall
be abandoned per City and State health codes.
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1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Mr. Don Ashworth
May 15, 1996
Page 7
Given the fairly high ground elevation, the applicant should be aware they may encounter low
water pressure on some of the higher elevated lots. Individual booster pumps may be required to
provide and meet water demands.
STREETS
Construction plans were provided to staff for review and City Council approval. Staff finds the
street construction plans in general conformance with City standards. Lots 2 and 3, Block 2 will
be served via a private street. Lot 4, Block 2 will access existing Yosemite. The remaining lots
will access via Knob Hill Lane. A modified cul -de -sac will be constructed at the end of Knob
Hill Lane. The street will end approximately 20 feet from the Donovan parcel. A condition will
be placed in the development contract indicating that Knob Hill Lane may be extended in the
future.
The 30 -foot wide right -of -way as recommended by staff has been deleted per City Council
direction on Lot 5, Block 1.
COMPLIANCE TABLE
Lot Frontage Depth Wetland Front Side Rear Max
Area (sq (ft) (ft) Setback Setback Setback Setback Bldg Ht
ft) (ft) (ft)
Code 15,000 90 125 Avg 10' 30 10 30 40
Lot 1
15,338
120
Blk 1
Lot 2
15,829
97
Blk 1
Lot 3
18,321
77,5*
Blk 1
Lot 4
22,911
90
Blk 1
Lot 5
87,912
145
Blk 1
Lot 1
15,517
117
Blk 2
Lot 2
16,603
122
Blk 2
Lot 3
17,572
74*
Blk 2
135
149
183
236
273
183
183
135
buffer +
40'
none 30 10 30
none 30
none 30
none 30
none 30
none 30
10 30
40'
10 30
40'
10
10
10
10
10
10
10
30
30
30
30
30
30
30
Mr. Don Ashworth
May 15, 1996
Page 8
Lot 4 35,052 229 162 10 30 10 30
Blk 2 40'
Lot 5 23,041 117 183 10 20 # 10 30
Blk 2 30' @
Lot 6 17,296 122 183 10 30 10 30
Blk 2 30' @
Lot 7 16,146 120 162 10 30 10 30
Blk 2 40'
Meets code requirements at the building setback
# Based on the granting of a front yard setback variance
@Based on the granting of a wetland setback variance
PARKS & RECREATION
The Park and Recreation Commission met on November 28, 1995 to review the proposed plat. The
commission recommended that full park and trail fees be required in lieu of land dedication.
REVIEW CONDITIONS OF APPROVAL
1. Full park and trail fees shall be paid per city ordinance in lieu of land dedication.
* This condition still applies.
2. A minimum 40 foot building setback (10 foot buffer and 30 foot setback from buffer line) shall
be maintained from the wetland on Lots 5 and 6, Block 2.
* This condition still applies.
3. A Tree Conservation Easement shall be designated on the southern and eastern wooded areas
on Lot 5, Block 1. The applicant shall prepare a legal description and survey for this
easement for city approval.
* This condition still applies.
4. Fifteen foot tree removal limits shall be required around the building pads on Lots 3 and 4,
Block 2. This tree removal limit shall be shown on the building permit application for each
lot. All lots shall show existing trees on building permit application surveys.
* This condition still applies.
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Mr. Don Ashworth
May 15, 1996
Page 9
5. The applicant is required to plant 37 trees as replacement and reforestation plantings. Trees
must be selected from the City's Approved Tree List.
*This condition still applies.
6. Any proposed entrance monument must comply with city code. A separate sign permit must be
submitted to the city.
* This condition still applies.
7. Submit street names and turning radius dimensions to the Public Safety Department,
Inspections Division for review prior to final plat approval.
* This condition has been met.
8. Revise the preliminary grading plan to show the location of proposed dwelling pads, using
standard designations and the lowest level floor and garage floor elevations. This should be
done prior to final plat approval.
* This condition has been met.
9. Obtain demolition permits. This should be done prior to any grading on the property.
* This condition still applies.
10. The applicant will need to develop a sediment and erosion control plan in accordance with the
City's Best Management Practice Handbook and the Surface Water Management Plan
requirements for new developments. The plan shall be submitted to the City for review and
formal approval. Type I erosion control fence shall be installed around the downstream side of
the construction limits and Type III erosion control along the perimeter of the wetlands. Rock
construction entrances shall be employed and maintained at all access points until the street has
been paved with a bituminous surface.
* This condition has been met.
11. All areas disturbed as a result of construction activities shall be immediately restored with seed
and disc - mulched or wood -fiber blanket or sod within two weeks of completion of each activity
in accordance with the City's Best Management Practice Handbook.
*This condition still applies.
* This condition still applies. '
15. The appropriate drainage and utility easements should be dedicated on the final plat for all
utilities and ponding areas lying outside the right-of-way. The easement width shall be a '
minimum of 20 feet wide. Consideration shall also be given for access for maintenance of the
ponding areas.
*This condition shall be modified as follows: The applicant shall dedicate a 20 foot wide '
drainage and utility easement over Lot 1, Block 2, centered upon the drainage swale.
16. Wetland buffer areas shall be surveyed and staked in accordance with the City's wetland '
ordinance. The City will install wetland buffer signs before accepting the utilities and will
charge the applicant $20 per sign. '
* This condition still applies. '
17. The lowest floor elevation of all buildings adjacent to wetlands and storm ponds shall be a
minimum of 2 feet above the 100 -year high water level. I
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Mr. Don Ashworth
May 15, 1996
Page 10
12. The applicant shall provide detailed storm sewer calculations for 10 -year and 100 -year storm
events and provide ponding calculations for stormwater ponds in accordance with the City's
'
SWMP for the City Engineer to review and approve prior to final plat approval. The applicant
shall provide detailed pre- developed and post developed stormwater calculations for 100 -year
storm events and normal water level and high water level calculations in existing basins, created
,
basins, and or creeks. Individual storm sewer calculations between each catch basin segment
will also be required to determine if sufficient catch basins are being utilized. In addition, water
quality ponding design calculations shall be based on Walker's Pondnet model. The sediment
'
pond shall be designed adjacent to the wetland on Lot 5, Block 2 outside the street right -of -way.
A wet meadow seed mix should be used to encourage native plants in and around the wetland.
'
* This condition has been met.
13. The applicant shall enter into a development contract with the City and provide the necessary
financial security to guarantee compliance with the terms of the development contract.
'
* This condition still applies.
14. The applicant shall apply for and obtain permits from the appropriate regulatory agencies, i.e.
'
Watershed District, Metropolitan Waste Control Commission, Health Department, Minnesota
Pollution Control Agency, Minnesota Department of Natural Resources and Army Corps of
Engineers and comply with their conditions of approval.
'
* This condition still applies. '
15. The appropriate drainage and utility easements should be dedicated on the final plat for all
utilities and ponding areas lying outside the right-of-way. The easement width shall be a '
minimum of 20 feet wide. Consideration shall also be given for access for maintenance of the
ponding areas.
*This condition shall be modified as follows: The applicant shall dedicate a 20 foot wide '
drainage and utility easement over Lot 1, Block 2, centered upon the drainage swale.
16. Wetland buffer areas shall be surveyed and staked in accordance with the City's wetland '
ordinance. The City will install wetland buffer signs before accepting the utilities and will
charge the applicant $20 per sign. '
* This condition still applies. '
17. The lowest floor elevation of all buildings adjacent to wetlands and storm ponds shall be a
minimum of 2 feet above the 100 -year high water level. I
t Mr. Don Ashworth
' May 15, 1996
Page 11
I * This condition still applies.
' 18. Existing wells and/or septic systems on site will have to be properly abandoned in accordance
to City and Minnesota Department of Health codes /regulations.
' * This condition still applies.
19. The proposed single family residential development of 7.69 developable acres is responsible for
' a water quality connection charge of $6,152 and a water quantity fee of $15,226. These fees are
payable to the City prior to the City filing the final plat. Credits will be given to these fees
based on the applicant providing for the City's SWMP requirements and will be deducted from
the totals after final plat review.
* This condition shall be modified as follows: The proposed single family residential
development of 7.69 developable acres is responsible for a water quality connection charge of
$6,152 and a water quantity fee of $15,226. Staff has reviewed the construction plans and
applied water quality treatment credits accordingly, $2,112 for a NURP pond and $2,000 for an
' outlet control structure. The final SWMP fee amount has been determined to be $17,266.00.
The applicant shall pay $17,266.00 to the City for SWMP prior to the City filing the final plat.
' 20. The applicant shall report to the City Engineer the location of any drain tiles found during
construction and shall re- locate or abandon the drain tile as directed by the City Engineer.
' * This condition still applies.
I 21. Retaining walls shall be employed in the rear yards of Lots 2 and 3, Block 1 and street grades
modified to be more conducive with existing grades.
' * This condition no longer applies.
22. Individual grading, drainage, tree preservation, and erosion control plans will be required for
' Lots 1, 2, and 5, Block 1, and Lots 2, 3, and 4, Block 2, at the time of building permit
application for the City to review and approve.
' * This condition still applies.
23. The public street and utility system shall be constructed in accordance with the City's street and
' utility standards. The private streets shall be constructed in accordance with current city
ordinances. Detailed construction plans and specifications shall be submitted for staff review
' and formal approval by the City Council in conjunction with final plat approval. The plans
Mr. Don Ashworth
May 15, 1996
Page 12
shall be designed in accordance with the latest edition of the City's standard specifications and
detail plates. Final plat approval is contingent upon approval of the construction plans by the
Chanhassen City Council.
* This condition has been met.
24. Fire hydrants shall be installed with 300 feet maximum spacing. A ten foot clear space must
be maintained around fire hydrants.
* This condition has been partially met. The first sentence can be deleted and the balance
still applies.
25. Delete Outlot A and combine with the adjacent Lots and dedicate a 30 foot private street
easement over Lots 1 and 2, Block 2, for ingress and egress.
* This condition has been met.
26. The applicant's engineer shall work with city staff in revising the construction plans to
minimize grading on the site.
* This condition has been met.
27. The temporary cul -de -sac shall be made to look permanent and setback the appropriate
amount, i. e., 20 to 30 feet, from the Donovan property.
* This condition has been meta
28. The developer shall include a covenant to inform future property owners of the possible road
connection into the Donovan property.
* This condition still applies.
RECOMMENDATION
Staff recommends that the City Council adopt the following motion:
"The City Council approves the final plat for Subdivision #95 -20 (Knob Hill) for 12 lots, and
associated right -of -way; and a front yard setback variance of 10 feet and a variance to the wetland
setback of 10 feet for Lots 5 and 6, Block 2, subject to the following conditions:
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' Mr. Don Ashworth
May 15, 1996
' Page 13
1. Full park and trail fees shall be paid per city ordinance in lieu of land dedication.
' 2. A minimum 40 foot building setback (10 foot buffer and 30 foot setback from buffer line) shall
be maintained from the wetland on Lots 5 and 6, Block 2.
3. A Tree Conservation Easement shall be designated on the southern and eastern wooded areas
' on Lot 5, Block 1. The applicant shall prepare a legal description and survey for this
easement for city approval.
' 4. Fifteen foot tree removal limits shall be required around the building pads on Lots 3 and 4,
Block 2. This tree removal limit shall be shown on the building permit application for each
lot. All lots shall show existing trees on building permit application surveys.
t 5. The applicant is required to plant 37 trees as replacement and reforestation plantings. Trees
must be selected from the City's Approved Tree List.
' 6. Any proposed entrance monument must comply with city code. A separate sign permit must be
submitted to the city.
' 7. Obtain demolition permits. This should be done prior to any grading on the property.
' All areas disturbed as a result of construction activities shall be immediately restored with seed
and disc - mulched or wood -fiber blanket or sod within two weeks of completion of each activity
' in accordance with the City's Best Management Practice Handbook.
8. The applicant shall enter into a development contract with the City and provide the necessary
' financial security to guarantee compliance with the terms of the development contract.
9. The applicant shall apply for and obtain permits from the appropriate regulatory agencies, i.e.
' Watershed District, Metropolitan Waste Control Commission, Health Department, Minnesota
Pollution Control Agency, Minnesota Department of Natural Resources and Army Corps of
Engineers and comply with their conditions of approval.
' 10. The applicant shall dedicate a 20 foot wide drainage & utility easement over Lot 1, Block 2,
centered upon the drainage swale.
' 11. Wetland buffer areas shall be surveyed and staked in accordance with the City's wetland
ordinance. The City will install wetland buffer signs before accepting the utilities and will
charge the applicant $20 per sign.
Mr. Don Ashworth
May 15, 1996
Page 14
12. The lowest floor elevation of all buildings adjacent to wetlands and storm ponds shall be a
minimum of 2 feet above the 100 -year high water level.
13. Existing wells and/or septic systems on site will have to be properly abandoned in accordance
to City and Minnesota Department of Health codes /regulations.
14. The proposed single family residential development of 7.69 developable acres is responsible for
a water quality connection charge of $6,152 and a water quantity fee of $15,226. Staff has
reviewed the construction plans and applied water quality treatment credits accordingly, $2,112
for a NURP pond and $2,000 for an outlet control structure. The final SWM]P fee amount has
been determined to be $17,266.00. The applicant shall pay $17,266.00 to the City for S WMP
prior to the City filing the final plat.
15. The applicant shall report to the City Engineer the location of any drain tiles :found during
construction and shall re- locate or abandon the drain the as directed by the Ciity Engineer.
16. Individual grading, drainage, tree preservation, and erosion control plans will be required for
Lots 1, 2, and 5, Block 1, and Lots 2, 3, and 4, Block 2, at the time of building permit
application for the City to review and approve.
17. A ten foot clear space must be maintained around fire hydrants.
18. The developer shall include a covenant to inform future property owners of the possible road
connection into the Donovan property.
19. The applicant must obtain a wetland alteration permit prior to filling the existing wetland #1.
If the wetland alteration permit is not approved, the required NURP pond would eliminate
Lot 5, Block 2 as a buildable lot. A drainage and utility easement shall be dedicated over all
wetland areas within the subdivision. Wetland mitigation measures shall be completed in
conjunction with the site grading and restoration.
20. Individual booster pumps may be required in some of the homes to provide and meet water
demands."
ATTACHMENTS
1. Knob Hill Final Plat
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