HomeMy WebLinkAboutStorm Drainage ReportStorm Report
FreeUp Stongg Silt, CO
Submitted:
Applicant:
Applicant's Engineer:
Site Location:
JuIy 2022
Spartan Investment Group
Contact: ZachGumper
1,440Brickyard Rd, Unit 4
Golderu CO 80403
Firwood Design Group
Contact Kelli Grover
ke@firwooddesign.com
359 E. Historic Columbia River Highway
Troutdale, OR9706O
(503) 668 -3737
357 S 16th St
silt, co 81,652
"LHnwooDY bes IGN GROUP
Silt FreeUp Storage Storm Report
OBJECTIVE
The site is located at 357 S 16th St in Silt, Colorado. The property is bordered to the south by
Interstate 73 right of way and to the north by Union-Pacific Railroad right of way. The existing
site hosts a storage facility with several buildings and a gravel parking area.
The project consists of the construction of four new storage facilities and improving the existing
gravel parking lot and drive lanes to conform to the new grading and drainage plan. Three of the
buildings will be nearly identical to the existing storage buildings on site which only have exterior
loading doors, while the fourth will be a larger climate-controlled building with smaller units
accessed from the inside. The existing vehicle area boundary will remain intact with a couple
modifications to accommodate the new buildings. The proposed area of disturbance is 39,000
square feet (0.9 acres). This only includes the new building area, as any work to the existing gravel
area will be limited to minor modifications and dressing related to regular maintenance of the
surface. Therefore, the project will disturb less than one acre and not trigger the requirement for
a Stormwater Discharge Permit through CDPHE.
Stormwater from all of the site's new existing and new impervious area will be designed to sheet
flow across the gravel vehicle area to convey to one of two discharge locations. The easternmost
discharge location matches existing site drainage patterns and will shed stormwater to the south.
The westemmost discharge point will be located to the south of new building "L" ar.d will allow
stormwater to flow overland through the large undistulbed vegetated area on the western 213 of
the project site.
The post-construction drainage patterns will match existing site drainage patterns to the
maximum extent practicable and not increase flows into neighboring properties, meeting Garfield
County stormwater requirements.
EXISTING DRAINAGE CONDITIONS
The existing 9.3-acre site contains eight single story storage buildings, totaling 42,000 sf of roof
area. The vehicle drive lanes and parking areas are all currently gravel, which totals
approximately 115,000 sf of area. There are no paved areas on site except for the asphalt approach
connecting the site f6 $ f 6ttr St. The site currently has no stormwater infrastructure. The building's
roof drain downspouts are all disconnected and directed onto a splash block that discharges
stormwater into the gravel area. The site is very flat, with grades from 0.5% to 2o/" generally
^tilonnWOODIrDESIGN GROUP
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Silt FreeUp Storage Storm Report
conveying stormwater to the west and south. All on-site stormwater drains to one of two small
drainage ponds along the southern propelty line. These ponds are depression areas that have
historically been collection points on the site.
Based on available sulvey, the flow path from the ponds is to the south directly into the
neighboring interstate right-of-way. There are no clearly defined drainage ditches or flow paths
in this right-of-way, however stormwater generaily flows to the west running parallel to the site
and likely meanders back through the undisturbed vegetated western portion of the property.
Along the eastern property line, there are a series of culverts and ditches that catch all stormwater
flowing from the east and direct stormwater to the south through a 36" drainage box that heads
underneath the interstate. This prevents off-site stormwater from flowing across the project site.
These culverts and ditches will be protected and kept in place as to not impact off-site drainage.
A geotechnical investigation report was prepared for the site. The results of the study indicate
saturated soils with high groundwater. This aligns with previous environmental studies of the
site that indicate the presence of wetlands on the western portion of the site. Additionally, a
portion of the site is located in the 100-yr floodplain of the Colorado River. The river flows east
to west approximately 800 feet south of the property. Soils research for the site was performed
through the online USDA Web Soil Survey. The site soil profile is a roughly 80/20 composition of
Halaquepts loam and Potts loam. The former is a poorly drained, hydric soil with a group
classification of C/D. The latter is a well-drained group C soil. Based on the results of both the
geotechnical report and soil survey, it was determined that infiltration of stormwater is not a
feasibility for the site's stormwater and drainage design.
Please reference sheet C2 of the civil plan set for more detail on the site's existing conditions.
PROPOSE D DRAINAGE (POST-CONSTRUCTION)
The project proposes to construct four new buildings that will total 38,900 sf of impervious roof
area. These buildings will replace existing gravel area on site, therefore, will not result in an
increase of new impervious area. The gravel areas that are outside of the building footprint will
remain but the surface will be amended per the grading plan on Sheet C4 of the civil plan set. The
objective o{ the grading plan is to create better defined flow paths for stormwater in the post-
construction site condition. Available survey of the site indicates roughly defined flow paths and
indicate some high points and low points that may contribute to drainage issues. The grading
"t[onnWOODYDESIGN GROUP
Page2
SiIt FreeUp Storage Storm Report
plarr will smooth out these areas to create a continuous flow path of at a minimum 1,"/" slope to
two new stormwater discharge locations.
The easternmost discharge point will be located between existing building "8" ar.d new building
"J" artdis in close proximity to one of the small existing drainage ponds. This pond will be filled
in (per the geotechnical report) to allow for new building construction. Proposed stormwater on
the eastern half of the site will collect at this point and sheet flow stormwater to the south between
the two buildings, matching existing site drainage patterns.
The westemmost discharge point will be located between new buildings "L" ar.d "K" at the west
end of the drive aisle. Since the other drainage pond will also be filled in due to new building
constructiory the surrounding gravel area will be graded to further extend this flow path to the
west, allowing stormwater to sheet flow off the gravel and to the westem vegetated area of the
site. By redirecting stormwater to the west, this decreases the stormwater volume discharged into
the neighboring right-of-way and allows stormwater to be treated and retained on site. The low-
lying vegetated area to the west will act as a pond for the site's stotmwater, allowing for filtration
through the existing vegetated areas and providing a long retention time of the stormwater
volume prior to discharge off-site.
Please reference sheets C3 and C4 for more information on the proposed stormwater and
drainage design.
ALTERNATIVES ANALYSIS
Several alternatives were studied during the pre-design and research phase for this project.
Garfield County stormwater standards require treatment for stormwater from all new
impervious area as well as peak flow matching detention for discharged stormwater. Since on-
site infiltration is not feasible, treatment could be provided through flow-through vegetated
facilities or proprietary treatment devices. FIowever, both of these facilities require a minimum
head to provide the necessary treatment, generally at least 24" ol iall. This extra head is not able
to be provided due to the flat topography of the site. Surface flow paths are already designed at
a minimum slope of 1."/o and creating extra treatmenthead would require flow paths less than 1%
and create new drainage issues on site. Since nearly all of the stormwater volume from new
impervious area will collect at the western low poinf it will be directed through the vegetated
area to the west which will provide inherent treatment via existing vegetation and wetlands. The
^LnnwooDIrDESIGN GROUP
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Silt FreeUp Storage Storm Report
flow path is nearly 1,000 feet before exiting the property, which will provide sufficient distance
to allow for natural treatment and filtration.
Detention could be provided through surface ponds or underground detention, both options
were studied for the design of this project. However, these facilities additionally require a
ponding depth to allow for storage and release of stormwater. This depth requirement would be
at least 4', eyen for a shallow pond or small diameter detention pipe with a large footprint. For
the same reasons listed above, this ponding depth is not able to be provided given the topography
of the site. If stormwater were to be piped underground or released from the bottom of a shallow
pond, it would be below the elevation required to daylight above-ground and discharge.
Therefore, the only option is to re-direct it to the west to be retained on-site in the low lying
vegetated area, as proposed. The net effect is no impacts to downstrearn properties or waterways.
^t{onnWOODIrDESIGN GROUP
Page 4
WATER LINE AGREIIME,NT
THIS WATER LINE EASEMENT AGREEMENT ("Agreement") is made as of
November_,2022 ("Effective Date") by and between FREEUP STORAGE SILT, LLC, a
Colorado limited liability company ("FreeUp Storage Grantor"), whose address is 375 S. 16th
St., Silt Colorado, 81652 and R&J PROPERTIES, LLC, a _limited liability company,
whose address is Silt, Colorado ("R&J Grantor")( collectively
"Grantors"), and TOWN OF SILT ("Grantee"), whose address is 231 N 7th Street, Silt,
Colorado 81652. Grantors and Grantee are sometimes referred together herein as the "Parties"
and individually as a"Party."
RECITALS
A. FreeUp Storage Grantor is the owner of that certain real properly situate in the
Town of Silt and County of Garfield, State of Colorado legally described as follows:
A Tract of Land Situated in the South lz of the South % of the North Y, of the
Northeast Y+, and Lots 1 and2, Section 10, Township 6 South, Range 92 West of
the 6th Principal meridian, lying southerly of the D&RGW Railroad Right of Way
Line, Notherly of U.S. Highway Interstate 70 Right of Way Line, and Westerly of
Road No. 311, County of Garfield, State of Colorado;
also commonly known by street address of 375 S. l6th St., Silt, CO 81652 ("FreeUp Storage
Grantor's Property")
B. R&J Grantor is the owner of that certain real property situate in the Town of Silt
and County of Garfield, State of Colorado legally described as follows:
A Tract of Land Situated in Sections 10 and I 1, Township 6 South, Range 92
West of the 6th Principal Meridian, County of Garfield, State of Colorado.
also commonly known by street address silt, co 81652 ( "R&J Grantor's
Property" and together with the FreeUp Storage Grantor's Property, the "Grantor
Properties").
C. Grantors desires to grant and convey to Grantee a perpetual non-exclusive
easement to construct, operate, maintain, repair and replace a water line (the "Water Line")
across the Grantor Properties herein (the "Water Line Easement") on the terms and conditions
set forth herein.
D. In connection therewith, R&J Grantor desires to grant and convey to FreeUp
Storage Grantor a temporary non-exclusive construction easement on the terms and conditions
set forth herein.
COVENANTS AND AGREEMENTS
NOW, THEREFORE, in consideration of the foregoing Recitals, which are hereby
incorporated herein as material terms, the mutual covenants and conditions contained in this
Agreement, and other good and valuable consideration, the receipt and adequacy of which are
acknowledged, Grantors hereby makes the following grant of access easement and right of way,
and Grantors and Grantee mutually covenant and agree as follows:
L Grant of Water Line Easement. Su b.ject to the terms and conditions set forth
herein, Grantors do hereby grant, sell, and convey unto Grantee, and Grantee's heirs,
beneficiaries, successors, and assigns, forever, a perpetual non-exclusive a Water Line Easement
over and across Grantor Properties, for construction, operation, repair and replacement of water
line. The general location of the Water Line Easement is legally described and depicted on
Exhibit A attached hereto (the "Easement Property"). Upon completion of the Water Line,
Grantee or FreeUp Storage Grantor shall cause the exact location of the Water Line to be
surveyed and a legal description of the same created. Upon the creation of the legal description,
the parties hereto shall promptly execute and record an amendment to this Agreement to replace
Exhibit A with the revised, final legal description and the new legal description shall constitute
the Easement Property.
2. Grant of Temporary Construction Easement. Subject to the tetms and conditions
set forth herein, R&J Grantor hereby grants, sells, and conveys to FreeUp Storage Grantor, its
contractors, agents, successors and assigns, for a period of time commencing on the Effective
Date and continuing until the completion of the Water Line, but in no event longer than July 31,
2023, a temporary construction and access easement across that portion of the R&J Property
depicted on Exhibit B attached hereto and incorporated herein (the "Temporary Basement
Area") for the purposes of staging and storing materials and constructing and installing the
Water Line within the Easement Property. Upon completion of the Water Line, FreeUp Storage
Grantor will repair any damage caused by it use of the Temporary Easement Area.
3. Use. Grantee, and Grantee's heirs, beneficiaries, successors, and assigns , and all
their guests, invitees, employees, agents, tenants, and contractors (collectively, "Invitees"), shall
be permitted to use the Easement Property for the herein-referenced purposes of the Water Line
Easement.
4. Non-Interference by Grantors: Grantors' Reserved Rights. Grantors shall not
make any use of the Easement Property that will materially interfere with Grantee's use and
enjoyment of the Water Line Easement. Grantors shall not enter into any agreement, make any
conveyance, or transfer any interest in any part ofGrantor Propefties, or do or suffer any other
act or permit any condition, that would unreasonably interfere with the use and enjoyment of the
Water Line Easement by the authorized users thereof. Grantors reserve the right to otherwise use
or grant additional easements over, on, or under the Easement Property if such easements and
uses do not materially interfere with Grantee's use and enjoyment of the Water Line Easement.
Grantors reserve the right to mortgage Grantor Properties, inclusive of the Easement Property.
5. Maintenance. Upon completion of the Water Line, Grantee shall be responsible
for the repair and maintenance of the Water Line. Grantors shall be solely responsible for
performing all other maintenance, repairs and replacements, and snow, ice and debris removal
(collectively, "Maintenance Activities") with respect to the Easement Property, except to the
extent Maintenance Activities are necessitated by the use, negligence or intentional misconduct
of Grantee or Grantee's Invitees that causes damage beyond normal wear and tear. Grantors
2
shall perform Maintenance Activities as necessary to keep the Easement Property and all
improvements thereon, excepting the Water Line, in good condition and repair, clean, and free of
noxious weeds, litter, snow, ice, and debris, and to maintain signs, markers, painted lines and
other means and methods of pedestrian and vehicular traffic control. With respect to the
foregoing, each of FreeUp Storage Grantor and R&J Grantor shall be responsible for the
Maintenance Activities on each of their respective properties, and neither shall have
responsibility for the other's property.
6. Grantee's Self-Help Riehtg. If one of the Grantors fail to timely perform any
Maintenance Activities, Grantee may, without waiving or releasing such Grantor from its
obligations hereunder, perform such Maintenance Activities on such Grantor's behalf upon thirty
(30) days' notice to the applicable Grantor (except where, in Grantee's opinion, an emergency
exists, in which event no notice shall be required). The applicable Grantor shall promptly
reimburse Grantee, or pay the third-party invoice(s), for the reasonable and necessary
Maintenance Activities costs incurred pursuant to this Section.
7. Compliance with Laws. Grantee, and Grantee's use of the Easement Property,
shall always comply in all material respects with all applicable laws, statutes, ordinances, rules,
and regulations (collectively, "Applicable Laws") and with all federal, state and local
governmental agencies having or exercising jurisdiction over Grantee or the Easement Property
(collectively, "Government Agencies").
8. Indemnities. Grantee's use and enjoyment of the Water Line Easement pursuant
to this Agreement shall be at Grantee's sole risk. Grantors and Grantee, and their respective
heirs, beneficiaries, successors, assigns, and personal representatives, do and shall each
indemnify and defend the other from and against all losses, damages, claims, liability, injury to
person or property, and expenses (including reasonable attorneys' fees) of every kind resulting
from their own act, omissions, or use of the Easement Property or the Temporary Easement
Area, including the use by their respective Invitees, to the extent caused by or resulting from
their, or their Invitees', negligent or intentional acts.
9. Insurance. Grantors and Grantee, for themselves and their respective heirs,
beneficiaries, successors, assigns, and personal representatives, each agrees to obtain and
maintain a policy of commercial general liability (CGL) insurance, which includes the Easement
Property in the description of the property insured thereby and which, to the extent available at
commercially reasonable rates and terms, provides coverage for the indemnities provided herein.
Each such policy shall name the record-title owner of the other property as an additional insured,
with respect to such indemnities.
10. Waiver of Subrogation. Anything in this Agreement to the contrary
notwithstanding, Grantors and Grantee each hereby waives any and all rights of recovery, claim,
action or cause of action, against the other for any loss or damage that may occur to the
Easement Property or the Grantor Properties, or any improvements thereto, or any other property
of a Pafty, by reason of fire, the elements, or any other cause that could be insured against under
the terms of the CGL insurance to be carried pursuant to this Agreement or any other insurance
policy, regardless of cause or origin, including negligence of the other Party or their Invitees and
covenants that no insurer shall hold any right of subrogation against such other pafty.
.,
I 1. Enforcement and Remedies. This Agreement and the terms, provisions,
covenants, and conditions hereof may be enforced by any Party. The Parties shall have all rights
and remedies available atlaw, in equity or otherwise (including without limitation injunction and
specific performance) in the event of a breach of the covenants or agreements contained herein. All
such rights and remedies shall be cumulative and shall not be deemed mutually exclusive, and all
rights and remedies may be pursued, whether at the same time or otherwise. In the event legal or
administrative suits or proceedings are brought against any Party for such enforcement, the
substantially prevailing party or parties shall recover from the substantially non-prevailing party
or pafties all costs associated therewith including, but not limited to, reasonable attorneys' fees.
12. Limitation of Liability. Neither Grantors nor Grantee shall be liable to the other
for consequential, incidental, special, punitive, exemplary, or indirect damages of any kind or
nature, regardless of the form of the action, whether in contract, toft or otherwise, including, but
not limited to, loss of profits or revenue and losses of rent, business opportunities and the like
that may result from the loss of use of the Easement Properly or any portion thereof.
13. Bindine Effect; Covenan ts Runnins with the Land. All provisions of this
instrument including all benefits and burdens shall be appurtenant to and run with the lands of
the Grantors and Grantee, respectively, and shall be binding upon and inure to the benefit of the
respective heirs, beneficiaries, successors, assigns, and personal representatives ofthe Parties,
and successor owners of Grantor Propefties, subject to the provisions hereof. Any conveyance or
encumbrance of Grantor Properties, or any part thereof, shall include the benefits and burdens of
this Agreement and the right to enforce this Agreement and shall be subject to the terms and
obligations of this Agreement.
14. Not a Public Dedication: No Third-Party Beneficiaries. Nothing herein contained
shall be deemed to be a gift or dedication of the Water Line Easement or the Easement Propeffy,
or any portion thereof, to the general public, or for any public use or purpose whatsoever.
Except as herein specifically provided, no right, privilege or immunity of any Party shall inure to
the benefit of any third party, nor shall any third party be deemed to be a beneficiary of any of
the provisions contained herein. Grantee shall have no right to grant or convey any further
easement or right-of-way in the Easement Property to third parties, and any such purported
conveyance shall be void.
15. Notices. All notices or other communications required or permitted hereunder
shall, unless otherwise provided herein, be in writing, shall be personally delivered, delivered by
reputable overnight courier, or sent by registered or certified mail, return receipt requested, and
postage prepaid, addressed to Grantors or Grantee at their respective address stated in the first
paragraph of this Agreement or as of record with the County Assessor or the County Treasurer.
Notices personally delivered shall be deemed given the day so delivered. Notices given by
overnight courier shall be deemed given on the first business day following the mailing date.
Notices mailed by registered or certified mail shall be deemed given on the third business day
following the mailing date. Notice of change of address may be given by written notice in any
manner provided in this Section.
16. Entire Agreement; Modification: Waiver. This Agreement and any agreement,
document or instrument referred to herein constitute the entire agreement between the Parties
4
pertaining to the subject matter contained in it and supersedes all prior and contemporaneous
agreements, representations and understandings of the Parties. No supplement, modification or
amendment of this Agreement shall be binding unless executed in writing by all Parties, their
successors or assigns. No waiver of any provision of this Agreement shall be deemed, or shall
constitute, a waiver of any other provision, whether similar. No waiver or consent shall
constitute a continuing waiver or consent or commit aParty to provide a waiver in the future
except to the extent specifically set forth in writing.
17. Further Assurances. Grantors and Grantee shall from time to time execute and
deliver to the other Party all instruments reasonably requested by the other Party to effect or
confirm any provision of this Agreement.
18. Governing Law. This Agreement, and the Parties' respective rights and
obligations hereunder, shall be governed by and construed in accordance with the laws of the
State of Colorado.
19. Acknowledgment of Legal Representation. The Parties agreethat this Agreement
is the product ofjoint draftsmanship and negotiation and that should any of the terms be
determined by a court, or in any type of quasi-judicial or other proceeding, to be vague,
ambiguous and/or unintelligible, that the same sentences, phrases, clauses or other wordage or
language of any kind shall not be construed against the drafting Party. All Parties have had the
opportunity to retain separate counsel to help them in evaluating this Agreement, assist them in
determining whether the provisions contained in this Agreement are in their best interests and
consistent with their economic objectives, and advise them regarding their position with respect
to this Agreement from an economic and tax standpoint.
20. Severability. If any clause or provision of this Agreement shall be held invalid or
unenforceable, the remainder of this Agreement shall not be affected thereby.
21. Captions. The section and subsection captions used in this Agreement are
included for convenience only and shall be irrelevant to the construction of any provision of this
Agreement.
22. Counterparts. This Agreement may be executed in one or more counterparts
Each shall be deemed an original and all, taken together, shall constitute one and the same
instrument.
23. Recording. Upon the mutual execution and delivery of this Agreement, this
Agreement, together with its Exhibit A and Exhibit B, may be recorded in the official records of
the City and County Clerk and Recorder by any Party.
Grantors and Grantee have executed this Water Line Easement Agreement as of the
Effective Date.
[Signatures on the following pages]
5
PROPOSED WATERLINE EASEMENT EXHIBIT
FREEUP STORAGE SILT LLC.
PARCEL NO. 2 I 79 I 01 000 I 8
L5 EXISTING BUILDINGS
(rYP.)L 1
FI
BASEDON L3
SPECIAL WARRANTY DEED
AT REC. NO. 9642115
PROPOSED
OF WATERLINE +-L2
w
PROPOSED
BUILDING
LINE TABLE,LINE TABLE
Line No.Bearing Distance Line No.Bearing Distance
LI s00"14'29"8 211 .21',L4 N62"43'51"W ss3.12',
L2 N84"11'21"W 64s.32',L5 s85"24'51"E I l9l .09'
L3 N82"28'51"W 7s9.90'L6 N00"35'44"W 10.04'
L]s85"24'5 1 "8 70t.46',
250 0'500'
DETAII,
GRAPHIC SCALE
lrr= 500'
AREA FOR
EASEMENT
DESCRIPTION ONCE
WATERLINE HAS
BEEN AS.BUILT
NO
TJK
CAD22/08 I -E. DWG
TJK
AUOUS1 r.2022
Prcject NO.
22081
SPARTAN INVESTMENT GROUP
FREEUP STORAGE SILT LLC
357 SOUTH 16 STREET
SILT COLORADO
WATERLINE EASEMENT EXHIBIT toF2
Drake Consulting, Inc.
Land Surveying
Phone 970-987-1389
Fax 970-360-1001
www.DrakeConsulting. CO
REVIEW
PROPOSED WATERLINE EASEMENT EXHIBIT
R&J PROPERTIES LLC
PARCEL NO. 21791 1200002
LINE TABLE
Line No.Bearing Distance
L8 s00'14'32"E 277.42'.
L9 N85"28'38"W 2248.45',
Lll s81"10'28"W 161.30',
L13 s79"01'32"E 10 l .00'
CURVE TABLE
Curve No Arc Length Radius Delta Angle Chord Bearing Chord Length
CI 478.4s',2342.01'1 1"42',18"N88.40'13'E 477.62',
C2 1612.40',t 1359.20'8"07'59"N85"14'28"E I 6l l .05'
C3 253.00't1339.20'1"16',42',s89"33'02"E 2s2.99',
C4 595.50'11339.20',3"00'32"s87"24',32',8 s9s.43'
250 500'
DETAIL
GRAPHIC SCALE
1il= 500t
AREAFOR
EASEMENT
DESCRIPTION ONCE
WATERLINE HAS
BEEN AS-BUILT
Drake Consulting, Inc.
Land Surveying
Phone 970-987-1389
Fax 970-360-1001
www.DrakeConsulting.CO
REVIE,W
TJK
TIK
AUCUSI r,2022
cADn?O8 I -E. DWG
SPARTAN INVESTMENT GROUP
FREEUP STOR,A.GE SILT LLC
I I97 COUNTY ROAD 3I I
SILT COLORADO
WATERLINE EASEMENT EXHIBIT
Projecr NO.
21091
2 oF2