HomeMy WebLinkAbout20160286.tiff MEMORANDUM
IMt,I
r, I/ Fr --I I TO: Kim Ogle, Planning Services DATE: 11/5/15 mei L , FROM: Jen Petrik, P.E., Development Engineer
CO - N—Y
SUBJECT: USR15-0062 Riverside oil and gas loading facility
The Weld County Department of Planning Services-Engineering has reviewed this proposal. Staff
comments made during this phase of the application process may not be all-inclusive, as other issues may
arise during the remaining application process.
COMMENTS:
General Project Information/Location:
Parcel(s): 096524100003
This project is to construct an oil offload facility to accept oil from within the 70-Ranch. Pipelines are planned
to replace trucking eventually.
This project is in township 5N Range 63W section 24. Access is from the east termination of CR388.
Roads:
County Road 388 is a gravel road and is designated on the Weld County Road Classification Plan as a
local road, which requires 60 feet of right-of-way at full buildout. The applicant shall delineate on the site
plan the future and existing right-of-way. All setbacks shall be measured from the edge of future right-of-
way. This road is maintained by Weld County.
The project uses an internal roadway system to access from CR388 to the site. The internal roadway
crosses section line ROW in some cases and follows ROW for a short segment through T5NR63W section
26. None of these section lines are county maintained roadways.
Section Line CR 54 adjacent to the south of the subdivision exemption is estimated to have 60 feet of
unmaintained County line right-of-way. The applicant shall delineate this information on the site plan. All
setbacks shall be measured from the edge of right-of-way.
Traffic:
Latest ADT on CR 388 was taken on 3/26/14 which counted 818 vpd with 75% trucks.
A traffic narrative was completed by Gene Cappola PE#15945. The narrative indicated the site will have
111 semi-truck round trips per day and 1 passenger vehicle round trip per day with the majority of the trips
occurring during daylight hours. With the Riverside facility, an estimated 90% of these trips will now be
confined to the 70 Ranch and adjacent properties. Instead of leaving and returning to the 70 Ranch these
trips will be re-routed to the Riverside facility and will, for the most part, remain within the 70 Ranch.
Accordingly, 100 truck trips per day will be removed from CR 50, CR 60, CR 388 and other County
roadways. After discussions with Jeff Butson of Tetra Tech clarification on the number of vehicles trips per
day from CR388 need to be confirmed. A voicemail was left for Gene Cappola to clarify the impact to the
County Road system.
Access:
An access permit has been approved for the access to the site from CR388 (AP15-00472). Access
continues across private property owned by 70 Ranch to the site.
Entrance gates (if applicable) must be set back a minimum of 100 feet from edge of shoulder to allow a
truck with trailer or RV to pull completely off of the roadway and open the gate. In no case shall any
vehicle(s)stopped to open a gate be allowed to create a safety issue for roadway users.
For legal access to the site the applicant has the ability to record the lease agreement that provides legal
access or provide a recorded access easement to the site.
TRACKING CONTROL:
Tracking control is required to prevent tracking from the site onto public roadways. Minimal standards are
listed below. Temporary Tracking Control shall be used during construction unless permanent tracking
control is installed ahead of construction activities.
More than 10 round truck trips/day(tandem or semi-trucks)or more than 50 round passenger vehicles trips:
Access onto gravel roads requires a tracking control device and a minimum of 300ft of recycled
asphalt or road base.
`Recycled concrete is not allowed in County ROW
**Tracking control devices can be double cattle guards or other specialized device
**" Tracking control for unmaintained public ROW is required just prior to entering publically maintained
roadways.
A development standard will be included on the recorded site plan. "The site shall be maintained to
mitigate any impacts to the public road including damages and/or offsite tracking."
A variance request for alternatives to the above tracking control can be submitted to the Traffic Division of
Public Works for review and consideration.
Improvements and Road Maintenance Agreement:
An Improvements Agreement between the Applicant and the County may be required for this project
depending on the traffic clarification from the traffic engineer. If required, it will detail the approved haul
route(s), outline when offsite improvements will be triggered, and include a maintenance agreement for the
haul routes.
Improvements/Road Maintenance Agreement: An example agreement is available at:
http://www.co.weld.co.us/Departments/Pla n n i ngZon i nq/Land UseApplicationsAssista nce/ApplicationAssist
ance.html
An Improvements Agreement is required for sites with required offsite improvements. Collateral is
required to ensure the improvements are made.
Road Maintenance is typically included as a section of the Improvements Agreement when the
County feels that the site activities may impact the County roadways. Possible mitigations included
in the road maintenance agreement may include but are not limited to: dust control, specified haul
routes, damage repairs, and future improvement triggers.
Drainage Requirements:
A drainage report was prepared by Jeff Butson PE#41891.The drainage report design proposes a variance
request for retention ponds due to the physical nature of the surrounding land. The downstream property
owner as shown per signed letter indicates they agree to accept increased runoff. Please update the site
plan drawing to show the retention ponds.
Grading Permit
A Weld County Grading Permit will be required if disturbing more than 1 acre. Grading Permit applications
are accepted after the planning process is complete (plan recorded). An Early Release Request Form may
be entertained only after the applicant and Planning Department have reviewed the referral and surrounding
property owner comments. The Early Release Request may or may not be granted depending on referral
comments and surrounding property owner concerns. Contact a Engineering representative from the
Planning Department for more information.
A Construction Stormwater Permit is also required with the State for disturbing more than 1 acre. Contact:
Colorado Department of Public Health and Environment,Water Quality Control Division, Rik Gay, 303-692-
3575.
Geologic Hazard Area:
This area IS NOT in a Geologic Hazard Area.
Floodplain:
This area IS NOT in a FEMA regulatory floodplain.
CONDITIONS OF APPROVAL:
A. An updated traffic narrative is required to clarify the daily round trips to and from CR 388 and the
impacts to the County maintained roads.
B. An Improvements and Road Maintenance Agreement is required for offsite improvements at this
location. Road maintenance including dust control, damage repair, specified haul routes and future
traffic triggers for improvements will be included. (Department of Public Works)
C. A Final Drainage Report and Certification of Compliance stamped and signed by a Professional
Engineer registered in the State of Colorado is required. (Department of Planning Services - Engineer)
A. The plan shall be amended to delineate the following:
1. County Road 388 is a gravel road and is designated on the Weld County Road Classification Plan
as a local road which requires 60 feet of right-of-way at full buildout. The applicant shall delineate
on the site plan the existing right-of-way. All setbacks shall be measured from the edge of right-of-
way. This road is maintained by Weld County. (Department of Planning Services-Engineer)
2. Show and label the approved access (AP15-00472), and the appropriate turning radii on the site
plan. (Department of Planning Services-Engineer)
3. Show and label all easements with the recorded document reception number and date on the site
plan. (Planning)
4. Show and label the approved tracking control on the site plan.
Prior to Construction:
A. The approved access and tracking control shall be constructed prior to on-site construction.
(Department of Planning Services-Engineer)
B. If more than one (1) acre is to be disturbed, a Weld County Grading Permit will be required.
(Department of Planning Services-Engineer)
DEVELOPMENT STANDARDS (NOTES ON THE SITE PLAN)
1. Should noxious weeds exist on the property or become established as a result of the proposed
development, the applicant/landowner shall be responsible for controlling the noxious weeds, pursuant
to Chapter 15, Articles I and II, of the Weld County Code. (Department of Planning Services-Engineer)
2. The site shall be maintained to mitigate any impacts to the public road including damages and/or
offsite tracking. (Planning and Engineering)
3. There shall be no parking or staging of vehicles on public roads. On-site parking shall be utilized.
(Department of Public Works)
4. The historical flow patterns and runoff amounts will be maintained on the site. (Department of Planning
Services-Engineer)
5. Weld County is not responsible for the maintenance of onsite drainage related features. (Department
of Planning Services-Engineer)
1861 MEMORANDUM
LIT
E
— ' ' TO: Kim Ogle, Planning Services
� \ FROM: Lauren Light, Environmental Health
� SUBJECT: USR15-0062 70 Ranch do Blue Grama
DATE: October 28, 2015
Environmental Health Services has reviewed this proposal for a Site Specific
Development Plan and Special Review permit for mineral resource development
facilities, an oil and gas storage facility with transloading, lay-down yard and a 35 foot in
height communications tower in the A (Agricultural) zone district (Blue Grama Land
Corporation, Riverside facility).
The application states there will be no permanent employees located at the facility.
There will be up to 111 drivers accessing the site. Portable toilets will be provided for
truck drivers.
The applicant submitted an Air Pollution Emission Notice (APEN) to the Air Pollution
Control Division, Colorado Department of Public Health and Environment in August.
We have no objections to the proposal; however, we recommend that the following
requirements be incorporated into the permit as development standards:
1. All liquid and solid wastes (as defined in the Solid Wastes Disposal Sites and
Facilities Act, 30-20-100.5, C.R.S., as amended) shall be stored and removed for
final disposal in a manner that protects against surface and groundwater
contamination.
2. No permanent disposal of wastes shall be permitted at this site. This is not
meant to include those wastes specifically excluded from the definition of a solid
waste in the Solid Wastes Disposal Sites and Facilities Act, 30-20-100.5, C.R.S.,
as amended.
3. Waste materials shall be handled, stored, and disposed of in a manner that
controls fugitive dust, fugitive particulate emissions, blowing debris, and other
potential nuisance conditions. The applicant shall operate in accordance with
Chapter 14, Article 1 of the Weld County Code.
4. The facility shall be constructed and operated to ensure that contamination of soil
and groundwater does not occur.
5. Any contaminated soils on the facility shall be removed, treated or disposed of in
accordance with all applicable rules and regulations. All spills will be reported to
local, state and federal agencies in accordance with all state and federal
regulations.
6. Fugitive dust and fugitive particulate emissions should attempt to be confined on
the property. Uses on the property should comply with the Colorado Air Quality
Commission's air quality regulations.
7. Adequate drinking, hand washing and toilet facilities shall be provided for
employees and patrons of the facility, at all times. If employees or contractors
are on site for less than 2 consecutive hours a day portable toilets and bottled
water are acceptable. Records of maintenance and proper disposal for portable
toilets shall be retained on a quarterly basis and available for review by the Weld
County Department of Public Health and Environment. Portable toilets shall be
serviced by a cleaner licensed in Weld County and shall contain hand sanitizers.
8. All potentially hazardous chemicals must be handled in a safe manner in
accordance with product labeling and in a manner that minimizes the release of
hazardous air pollutants (HAPs) and volatile organic compounds (VOCs). All
chemicals must be stored securely, on an impervious surface, and in accordance
with manufacturer's recommendations.
9. A Spill Prevention, Control and Countermeasure Plan, prepared in accordance
with the applicable provisions of 40 CFR, Part 112, shall be available on site.
10.This facility shall adhere to the maximum permissible noise levels allowed in the
Non-Specified Zone as delineated in Section 14-9-30 of the Weld County Code.
11.Secondary containment shall be constructed around tanks to provide containment
for the largest single tank and sufficient freeboard to contain precipitation. A
synthetic or engineered liner shall be placed directly beneath each above-ground
tank. Secondary containment shall be sufficiently impervious to contain any spilled
or released material. Secondary containment devices shall be inspected at regular
intervals and maintained in good condition.
12.The applicant shall comply with all provisions of the State Underground and
Above Ground Storage Tank Regulations.
13.The facility shall comply with the Air Pollution Emission Notice (A.P.E.N.) permit
requirements as stipulated by the Air Pollution Control Division, Colorado
Department of Public Health and Environment, as applicable.
2
14.The applicant shall obtain a Colorado Discharge Permit System or CDPS permit
from the Colorado Department of Public Health and Environment (CDPH&E),
Water Quality Control Division, as applicable.
15.The operation shall comply with all applicable rules and regulations of State and
Federal agencies and the Weld County Code.
3
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vans, Colorado STREET ACCESS PERMIT
Public Works Department - 1100 37th Street - Evans, Colorado 80620 - 970-475-1170
Permit it a031- 20/5 Date 11.10.15 Permit Fee:$0.00
THE PERMITTEE: is hereby granted permission to construct and use
an access at the location noted ow. The access shall be constructed, maintained and used in accordance with
the terms and conditions o is permit. This permit may be revoked by the City of Evans if at any time the
permitted access or its a violates any of the terms and condition of this permit. This permit is null and void
at the time any rede lopment of the parcel is started. The use of advance warning and construction signs,
flashers, barricad and flaggers are required at all times during access construction within the City of Evans
right-of-way in onformance with the MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES, Part VI.
The City of ans and their duly appointed agents and employees shall be held harmless against any action for p
personal i ury or property damage sustained by reason of the exercise of the permit.
LOC PION:
ACCESS TO PROVIDE SERVICE TO:
Gre
uJ J p(essige Cn# / ,
77 /0 3741/2 . BceSe'{ 1CO SDf l4
OTHER TERMS AND CONDITIONS: City of Evans Perms and Conditions;
T River's Parkway is owned and maintained by the City of Evans. This road and is designated as a future gateway
a erial, which requires120ft of ROW at full build out. The applicant shall delineate on the site map the future and existing
rig ht-of-way. The detention pond may need to be relocated in the future when this roadway is expanded.
Purthermore, The City of Evans is not responsible for the maintenance of the onsite or offsite drainage improvements.
I I
Upon the signing of this permit, the pern ittec agrees to the terms and conditions and referenced attachments contained
herein. All construction shall be completed in an expeditious and safe manner and shall be finished within 45 days from
initiation. The permitted access shall be completed in accordance with the terms and conditions of the permit prior to
being used. The permitter shall notify Dawn Anderson with the City of Evans, Public Works Department at 970-475-
1160 or at DAndersonfi evanscolorado.gov, at least 48 hours prior to commencing construction with the City of Evans
right-of-way.
The person signing as the permittee must be the owner or legal representative of the property served by the
permitted access and have full authority to accept the permit and all its terms and conditions.
3CAY1 Nave1/4)c—
ee Name 'c'xmittee Signat e Date
This permit is not valid until signed by a duly authorized representative of the City of Evans, Public Works Department.
11/1/Am i i l 1 15
Representative Name & Title Representative Signature Date
CHANGES IN USE OF DESIGN NOT APPROVED BY THE PERMIT OF THE ISSUING
AUTHORITY MAY CAUSE THE REVOCATION OR SUSPENSION OF THE PERMIT.
I. Variances
a) Should thc permittee or applicant choose to object to any of the terms or conditions of the permit placed therein by the City of Evans,
variance must be requested from the City of Evans, Public Works Director within 60 days of transmittal off the permit for permitter
signature. The request shall include reasons for the variance and may include recommendations by the permittee or applicant that
would be acceptable to him/her.
b) The City variance may consider any objections and requested revisions at the request of the permittee or applicant. If agreement is
reached, the City of Evans may revise the permit accordingly, issue a new permit, or require the applicant to submit a new application
for reconsideration. Changes in the original application, proposed design or access use will normally require submittal of a new
application.
c) Regardless of any communications, meeting, or negotiations with the City of Evans regarding revisions and objections to the permit,
if the permitter or applicant wishes to appeal thc City decision to the Council, the appeal must be brought to the Council within 60
days of transmittal of the permit.
H. Construction standards and requirements
a) The access must be under construction within one year of the permit date. However, under certain conditions a one year time extension
may be granted if requested in writing prior to permit expiration.
b) The applicant shall notify the City of Evans, as noted on the permit, at least 48 hours prior to construction. Inspections will be made
during construction.
c) The access construction with City of Evans right-of-way must be completed within 45 days of the start of construction.
d) It is the responsibility of the permittee to complete the construction of the access according to the terms and conditions of the permit.
If the permittec wishes to use the access prior to completion, arrangements must be approved by the issuing authority and included
on the permit. The City may order a halt to any unauthorized use of the access. Reconstruction or improvements to the access may
be required when the permitter has failed to meet required specification of design or materials. If any construction element fails
within two years due to improper construction or material specification, the permittee is responsible for all repairs.
e) In the event it becomes necessary to remove any right-of-way fence, the posts on either side of thc access shall be securely braced
within approved end post before the fence is cut to prevent any slacking of the remaining fence. All posts and wire removed are City
property and shall be turned over to a representative of the City of Evans.
f) A copy of the permit shall be available for review at the construction site. If necessary, minor changes and additions shall be ordered
by the designated City Authority to meet unanticipated site conditions.
g) The access shall be constructed and maintained in a manner that shall not interfere with the drainage system in thc right-of-way.
h) Where necessary to remove, relocate, or repair a traffic control device or public or private utilities for the construction of a permitted
access, the work shall be accomplished by the permittee without cost to the City of Evans, and at the direction of the City or utility
company. Any damage to the state highway or other public right-of-way beyond that which is allowed in the permit shall be repaired
immediately.
i) Adequate advance warning is required at all time during access construction, in conformance with the Manual on Uniform Traffic
Control Devices for Streets and Highways. This may include the use of signs, flashers, barricades and Baggers. The issuing authority,
the City of Evans and their duly appointed agents and employees shall be held harmless against any action for personal injury or
property damage sustained by reason of the exercise of the permit.
III. Changes in use and violations
a) If there are changes in the use of the access, thc access permit-issuing authority must be notified of the change. A change in property
use which makes the existing access design or use in non-conformance with the Evans 'transportation Plan, or other adopted access
control documents, or the terms and conditions of the permit, may require the reconstruction or relocation of the access. Examples
of changes in access use are: an increase in vehicular volume by 20 percent, or an increase by 20 percent of a directional characteristic
such as a left turn. The City of Evans will review the original permit; it may decide it is adequate or require that you apply for a new
permit.
b) All terms and condition of the permit are binding upon all assigns, successors-in-interest and heirs.
c) When a permitted driveway is constructed or used in violation of the Access Permit, thc City of Evans may obtain a court order to
halt the violation. Such access permits may be revoked by the issuing authority.
IV. Further information
a) When the permit holder wishes to make improvements to an existing legal access, he/she shall make the request by filing a completed
permit application form with the City of Evans. The City of Evans may take action only on the request for improvement. Denial
does not revoke the existing access.
b) The penmittee, his heirs, successors-in-interest, and assigns of the property serviced by the access shall be responsible for meeting the
terms and condition of the permit and the removal of clearance of snow or ice upon the access even though deposited on the access
in the course of City snow removal operations.
c) The issue date of the permit is the date the City of Evans representative signs the permit, which is after the permittee has returned the
signed permit and paid any required fees.
d) The City of Evans may, when necessary for the improved safety and operation of the roadway, rebuild, modify, remove, or redesign
the highway including any auxiliary lane.
By initialing here, I acknowledge that I have read, understand, and agree to the terms as stated on this permit.
fritA Street ACCESS Permit Application
-.) Etas. f ta11(ra(ru 37th
Public Works Department - 1100 37 Street Evans, Colorado 80620 - 970-475-1170
Each question must be fully and accurately completed. No action will be taken cm this application until all applicable questions have been answered.
Jul applicable pietas must be JNhinIlt.UI will) this application fbrnt.
Applicant 1 Property Owner (If different than Applicant)
Name 4 t ,r1 ( \i k_ Itr << I 1 Name re€2-4- Wil . IC Irctsucc ( e) /LLG
Company(^ t' el-% tt 't 4 t. 4 i P 'Fat't t (01 14, .0 4 t .C I Address /5/2'D/ Ce,/6.,r tir .gtr 36O
Address 7 7( li 1.�n C$ if Pi - c' U i1/4/14,-, k C' /� O
pp � ItY ryn� ,L`t�tate � zip �-����
City( 't A:" F'lY .‘ti
� State( ( • Zip ':)C 'te Y' '� i Phone _ 'yE : t - 4 Y t '. • .) Ze • wI
Phone 11 �C.` - 5t. 44' t'o p / E-mail i i f . SC • he. tt-Ili I t V1-1 (-'E'f i(id- i'ii d&an 911
E-mail)eJ .I 1 . (it t',lt "1414{:c-c, ( '� it'i, k..._ i t . ( t' �l ? PLEASE PRINT LEGIBLY
Location Information
Subdivision/Project Name
Location ;/ r�
/91h "lug Y f�2 / s s~t 4/ GQ _ Section 1 Township 'rj.e. Range to 4
What City street are you requesting access from? What side of meet (please circle)
4, tiers Ai-Lai ny N S E (7),
How many feet is the proposed accessfrom the nearest cross street? 240 re --
Proposed Use: ❑Residential ❑Commercial [ Industrial [lather
Will the new Access generate over 200 trips per day? Oyes [Ergo ,,_,�
What type of access are you requesting? ❑New�Ac ess (, Temporary Access t;9► improvement to Existing Access OChange in Access use
Existing street to be Accessed is: ❑Concrete Asphalt OGravel DOther l]Curb & Gutter ❑Sidewalk
Type of material used to construct the Access will be; OConcrete
El. Asphalt ravel DOther
Will the new Access require a drainage culvert? Oyes Milo Jilo if yes, what size & type? _
Do you have any knowledge of any access permits serving this property, or for adjacent properties In which you have a property interest?
❑yes ON° If yes, explain:
Does the property owner own or have any interests in any adjacent property? Dyes L%i o If yes, explain:
Are there existing or dedicated public streets, or access easements bordering or with the property? bares Li No If yes, rut them on your plans.
If you are requesting commercial or Industrial access, please indicate the types of business and provide the square footage far each.
Business
/� J�/� Square tfootage Business Square footage
'erredai O4 ehBe4 M rc ( ,�:J/ JO 54i3 3.se
R
2. 4.
If you are requesting residential access, what is the type and number of units?
05ingle Family ODuplex OTownhouse OApartment 00ther # units:
If an access permit is issued to you it will state the terms and conditions for Its use.. Any changes in the use of the permitted access nut consistent with the term:, and
condition Nsted on the permit may be considered a violation of the permit.
THE APPLICANT DECLARES UNDER PENALTY OF PERJURY IN THE SECOND DEGREE, AND ANY OTHER APPLICABLE STATE OF FEDERAL LAWS, THAT
ALL INFORMATION PROVIDED ON THI5 FORM AND SUBfv1ITTED ATTACHMENTS ARE, TO THE BEST OF THEIR KNOWLEDGE, TRUE AND COMPLETE.
_op.o_L Le i *"..1( i't.' tt,11.c.L1.../1 1, -X; -/ii
APPLICANT SICNATURt r DATE
If the applicant Is not the owner of the property, we require this application also to be signed by the property owner or their legally authorized representative (or
other acceptable written evidence). This signature shall constitute agreement with this application by all owners-of-Interest unless stated in wilting. If a permit is
authorized, the property owner will be listed as the permittee_
APPUCANY SIGNATURE DATE
41/4 DNR COLORADO
CODivision of Water Resources
q
TM Department of Natural Resources
1313 Sherman Street, Room 821
Denver, Co 80203
October 16 , 2015
Kim Ogle
Weld County Department of Planning Services
Transmission via email: kogle@co.weld . co. us
Re: Site Specific Development Plan and Use By Special Review Application for
70 Ranch , LLC c /o Blue Grama Land Corporation
Case No. USR15-0062
Pt. S '/2 Section 24, T5N , R63W, 6th P.M.
Water Division 1 , Water District 1
Dear Mr. Ogle:
The submitted material does not appear to qualify as a "subdivision " as defined in § 30-28-
101 ( 10) (a) , C . R. S . Therefore , pursuant to the State Engineer' s March 4, 2005 and March 11 , 2011
memorandums to county planning directors, this office will only perform a cursory review of the
referral information and provide comments . The comments will not address the adequacy of the
water supply plan for this property or the ability of the water supply plan to satisfy any County
regulations or requirements.
The applicant is seeking a Site Specific Development Plan and Use by Special Review permit
for a truck unloading and oil and gas support facility, known as the Riverside Facility, on a 12. 8-acre
site. The site is designed to be unmanned but will be visited by staff for maintenance and security
purposes. The site will also be accessed by up to 111 trucks per 24 hours . Portable toilets with hand
sanitizer will be provided for use by truck drivers and site visitors. Bottled water will be supplied for
drivers and employees.
Water is required at the site for hydrotesting and dust control. According to the submittal,
water from the property owner (70 Ranch ) will supply these non - potable needs. There do not appear
to be any wells permitted for such commercial/industrial use in the vicinity of the site, therefore
this office in unsure what the specific source of water for the non - potable needs is. The subject
property is included in the Application for Nontributary Groundwater Right for 70 Ranch currently
pending in Division 1 Water Court case no. 2014CW3118. Any wells proposed to be used as a water
supply for industrial /oil and gas development purposes at this site must be operated pursuant to a
substitute water supply plan approved by the State Engineer or a court decreed plan for
augmentation until/ unless they are decreed as nontributary.
The application materials indicate that two retention ponds will be utilized to mitigate
storm water runoff from the developed area. The applicant should be aware that, pursuant
to Colorado Senate Bill 15-212 , storm water facilities must meet specific criteria to prevent
them from being administered by the Office of the State Engineer as detailed in § 37-92-
602 (8) , C. R. S . The detention pond must be operated solely for storm water management and
be subject to oversight by a governmental entity (i . e . , required as part of a permitting
process) . Further, it must release or infiltrate at least 97 percent of all of the water from • (fiscot
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1313 Sherman Street, Room 821 , Denver, Co 80203 P 303.866.3581 F 303.866.3585 www.water.state.co.us
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1876V
70 Ranch , LLC - Riverside Facility October 16, 2015
Case No. USR15-0062 Page 2 of 2
rainfall event that is equal to or less than a five-year storm within 72 hours of the end the
rainfall event. Water detained from rainfall events greater than five-year storms should be
released as quickly as practicable, not to exceed the release or infiltration of 99 percent of
all water within 120 hours of the end of the rainfall event. The detention pond must operate
passively, not expose ground water, and not subject the storm water runoff to any active
treatment process. In addition , the operator must submit notice of the proposed detention
facility to the Substitute Water Supply Plan Notification List. Urban Drainage and Flood
Control has created a notification portal that operators can use to satisfy this requirement:
https: / / maperture. digitaldataservices. com / gvh /?viewer=cswdif
Should you or the applicant have any questions regarding this matter, please contact Sarah
Brucker of this office.
Sincerely,
1/1(ALIAlj
Tracy L. Kosloff, P. E.
Water Resource Engineer
TLK/srb: Blue Grama USR15-0062 y, cici
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1313 Sherman Street, Room 821 , Denver, CO 80203 P 303.866. 3581 F 303.866. 3585 www.water.state.co.us CO( ~" o
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