HomeMy WebLinkAbout20190763.tiffMEMORANDUM
TO: Michael Hall, Planning Services
FROM: Hayley Balzano, Public Works
DATE: February 14, 2019
SUBJECT: PUDF18-0008 Longs Peak Estates
The Weld County Department of Public Works has reviewed this PUD 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
Project description: Amended PUD Final Plan of Longs Peak Estates, PUDF18-0008 (formerly known as
PF-543) to reflect the changes permitted under PUDZ18-0001 and to expand the building envelopes on
Lots 2, 3, 5, 6, and 7
This project is south of and adjacent to CR 12 and is west of Peak View Road.
Parcel number 146709104003, 146709104004, 146709104005, 146709104006, 146709104007,
146709204001, 146709104004, 146709104005, 146709104006, & 146709104007.
Access is from CR 12 and Peak View Road.
ACCESS
The existing access onto County Road 12 is under the jurisdiction of the Town of Erie and is not proposed
to be changed. The existing access onto Peak View Road is not proposed to be changed. The PUD is
served by an internal roadway approved under PF-0543.
ROADS AND RIGHTS -OF -WAY
Peak View Road is a gravel road and is designated on the Weld County Functional Classification Map
(Code Ordinance 2017-01) as a(n) local road, which requires 60 feet of right-of-way. The applicant shall
delineate on the site map or plat the future and existing right-of-way and the physical location of the road.
If the right-of-way cannot be verified it shall be dedicated. Pursuant to the definition of setback in the Weld
County Code, Chapter 23, Article III, Section 23-3-50, the required setback is measured from the future
right-of-way line. Be aware that physical roadways may not be centered in the right-of-way. This road is
maintained by Weld County.
This portion of County Road 12 is under the jurisdiction of the City or Town (municipality) of Erie. The
municipality has jurisdiction over access to the road. Please contact the municipality to verify the access
permit or for any additional requirements that may be needed to obtain or upgrade the permit.
Weld County will not replace overlapping easements located within existing right-of-way or pay to relocate
existing utilities within the County right-of-way.
TRAFFIC
Latest ADT on CR 12 counted 451 vpd with 10% trucks.
No traffic counts are available for Peak View Road.
TRACKING CONTROL POLICY
There are no additional tracking control requirements for this Change of Zone. The PUD roads are paved
internal to the PUD.
IMPROVEMENTS AND ROAD MAINTENANCE AGREEMENT
There is an existing Improvements Agreement for the PUD, reception number 4253148.
DRAINAGE REQUIREMENTS
This area IS within an Urbanizing Drainage Area:
Urbanizing Drainage Areas typically require detention of runoff from the 1 -hour, 100 -year, storm falling on
the developed site and release of the detained water at the historic runoff rate of the 1 -hour, 5 -year storm
falling on the undeveloped site for URBANIZING areas.
The drainage for the PUD was originally addressed with a master drainage report for Longs Peak Estates.
The addition of a second house on the lots of this PUD has the potential to increase the imperviousness of
the lots in the PUD. The applicant has submitted a letter signed and stamped by a Colorado Licensed
Professional Engineer addressing the addition of second homes on Lots 1 and 4 of the PUD. The letter
states that the ponds can handle this increase in imperviousness. If the applicant intends to allow for a
second home to be added on all lots of the PUD, Public Works will need an updated drainage letter
indicating if the existing ponds can handle the potential increase in imperviousness on all lots or if
improvements to the existing ponds are required. This letter shall be signed and stamped by a Colorado
Licensed Professional Engineer.
Historic Flows:
The applicants will be required to maintain the historic drainage flows and run-off amounts that exist from
the property.
ROADS
The subdivision roads were designed and completed under PF-0543.
UTILITY MAP
The Utility Map will need to show easements to meet Weld County Code.
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 an 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.
CONDITIONS OF APPROVAL
A. An updated drainage letter addressing the potential increase in imperviousness on all of the
residential lots of the PUD is required prior to recording the PUDZ map. The letter shall address if the
existing drainage infrastructure can handle the increase in imperviousness or if there are additional
improvements required to the drainage infrastructure. This letter is to be stamped and signed by a
Professional Engineer registered in the State of Colorado. (Department of Public Works)
B. The plan shall be amended to delineate the following:
1. Peak View Road is a gravel road and is designated on the Weld County Functional Classification
Map 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 Public Works)
2. Show and label the approved access locations, and the appropriate turning radii on the site plan.
(Department of Public Works)
3. Show the approved Municipality of Erie access on the site plan and label with the approved access
permit number if applicable. (Department of Public Works)
4. The applicant shall show and label the accepted drainage features and drainage flow arrows.
Stormwater ponds should be labeled as "Stormwater Detention, No -Build or Storage Area" and
shall include the calculated volume. (Department of Public Works)
Prior to Operation:
A. If more than one (1) acre is to be disturbed, a Weld County Grading Permit will be required.
(Department of Public Works)
DEVELOPMENT STANDARDS (NOTES ON THE SITE PLAN)
1. The property owner or operator shall be responsible for controlling noxious weeds on the site, pursuant
to Chapter 15, Article I and II, of the Weld County Code. (Department of Public Works)
2. The access on the site shall be maintained to mitigate any impacts to the public road including damages
and/or off -site tracking. (Department of Public Works)
3. Any work that may occupy and or encroach upon any County rights -of -way or easement shall acquire
an approved Right -of -Way Use Permit prior to commencement. (Department of Public Works)
4. The historical flow patterns and runoff amounts on the site will be maintained. (Department of Public
Works)
5. Weld County is not responsible for the maintenance of onsite drainage related features. (Department
of Public Works)
6. Weld County is not responsible for the maintenance on onsite subdivision roads. (Department of Public
Works)
WELD COUNTY DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
1555 North 17th Avenue, Greeley, CO 80631 www.weldhealth.org
Memorandum
To: Michael Hall
From: Lauren Light, Environmental Health Services
Date: February 11, 2019
Re: PUDF18-0008 Longs Peak Estates
Environmental Health Services has reviewed this proposal for an Amended PUD Final
Plan of Longs Peak Estates to reflect the changes permitted under PUDZ18-0001 and
to expand the building envelopes on Lots 2, 3, 5, 6, and 7.
Left Hand Water District will provide water to the second residences and a letter from
the District, dated March 21, 2018, indicates the taps that are assigned to each lot will
accommodate both residences.
On -site wastewater treatment systems (OWTS) will provide sewer for the residences.
Environmental Health Services has no objections to removing septic envelopes.
The Department recommends the following appear as notes on the amended final plat:
1. Water service may be obtained Left Hand Water District.
2. The parcel is currently not served by a municipal sanitary sewer system.
Sewage disposal may be by septic systems designed in accordance with the
regulations of the Colorado Department of Public Health and Environment,
Water Quality Control Division and the Weld County Code in effect at the time
of construction, repair, replacement, or modification of the system.
3. Activity or use on the surface of the ground over any part of the OWTS must be
restricted to that which shall allow the system to function as designed and which
shall not contribute to compaction of the soil or to structural loading detrimental
to the structural integrity or capability of the component to function as designed.
Health Administration
Vital Records
lot: 9/0 304 6410
Fax: 9/0-301-64 I'2
Public Health &
Clinical Services
Icic: 9/0 304 6420
Fax: 910-301-64 16
Environmental Health
Services
Tele:970-304-6415
Fux: 970-304-6411
Communication,
Education & Planning
Tele: 970-304-6470
Fox: 970-304-6452
Emergency Preparedness
8 Response
Te le: 970-304-6470
Fax: 970-304-6462
Public Health
Michael Hall
From: Jose Gonzalez
Sent: Thursday, February 14, 2019 11:53 AM
To: Michael Hall
Subject: PUDF18-0008 Building Dept Referral
Follow Up Flag: Follow up
Flag Status: Completed
Comments:
As a replacement for Geological Hazard Development Permits on Lots 3 through 7 and removing the CGS restrictions on
Lots 2 through 7, a geotechnical study signed by a professional geologist and/or by a professional geotechnical engineer
shall be submitted with the Building Permit application.
1. Ageotechnical study prepared by a professional geologist and/or by a professional geotechnical engineer shall
be submitted to the Building Department along with the Building permit application. The study shall specify that the
foundation and structure design are appropriate for the specific site. (Department of Building Inspection)
2. Building permits may be required, for any new construction or set up manufactured structure, per Section 29-3-
10 of the Weld County Code. A building permit application must be completed and submitted. Buildings and structures
shall conform to the requirements of the various codes adopted at the time of permit application. Currently the
following has been adopted by Weld County: 2018 International Building Codes; 2018 International Residential Code;
2006 International Energy Code; 2017 National Electrical Code; and Chapter 29 of the Weld County Code. A plan review
shall be approved, and a permit must be issued prior to the start of construction. (Department of Building Inspection)
Jose Gonzalez
Asst. Building Official
1555 N. 17th Ave
Greeley, CO 80631
970-400-3533
jonzalez@weldgov.com
1
Michael Hall
From:
Sent:
To:
Cc:
Subject:
Attachments:
Follow Up Flag:
Flag Status:
Jill Carlson <carlson@mines.edu>
Friday, January 25, 2019 2:15 PM
mbowman@colsonconstruction.com
Michael Hall; Karen Berry; Beth Sjaastad
Longs Peak Estates -- Outstanding CGS Invoices
LongsPea kEstatesCGSlnvo ices.pdf
Follow up
Completed
Caution: This email originated from outside of Weld County Government. Do not click links or open attachments unless you recognize the
sender and know the content is safe.
Mr. Bowman:
Colorado Geological Survey has received a request from Weld County to review PUDF18-0008, an Amended PUD Final
Plan of Longs Peak Estates to reflect the changes approved under PUDZ18-0001 and to expand the building envelopes on
Lots 2, 3, 5, 6, and 7.
CGS cannot review this until the outstanding invoices for previous Longs Peak Estates reviews (attached, $1020.54 total)
have been paid in full.
Alternatively, Weld County can make payment of these invoices a condition of approval (proof of payment to CGS would
be required by the county prior to recordation of the amended PUD final plan).
Thank you,
]ill Carlson
Engineering geologist
Land Use Review Program
Colorado Geological Survey
1801 Moly Road (map)
Golden, CO 80401
carlson@mines.edu
303-384-2643
1
ORG
2200
CO
COLORADO GEOLOGICAL SURVEY
1801 19th Street
Golden, CO -80401
PHONE (303)384-2655
INVOICE
INVOICE #
18-216
I
INVOICE DATE
17 -May -18
Colson Inc.
Attn: Mark Bowman
4885 Avery Court
Erie, CO 80516
RE:
PUD Change of Zone Longs Peak Estates
Jill Carlson WE -18-0048
.6 hours at $12-6.55 per hour.
Colorado Geological Survey review at the request of
Weld County
EXPLANATION- OF CGS INVOICE FOE LAND USE REVIEWS:
i
UNDER C.R.S. 30-28-101, ET SEQ. (SENATE BILL 35 OF 1972) COUNTIES ARE REQUIRED
TO SUBMIT PROPOSED LAND USE APPLICATIONS AND SUPPORTING TECHNICAL REPORTS TO THE
COLORADO GEOLOGICAL SURVEY (CGS) "FOR AN EVALUATION OF THOSE GEOLOGIC FACTORS
WHICH WOULD HAVE A SIGNIFICANT IMPACT ON THE PROPOSED USE OF TtiE
MUNICIPALITIES SUBMIT PROPOSED LAND USE APPLICATIONS AT THEIR DISCRETION (C.R.S.
29-20-101) AND BOTH COUNTIES AND MUNICIPALITIES CAN SUBMIT REFERRALS TO CGS
UNDER HB 1041 (C.R.S. 24-65.1-101). CGS IS OBLIGATED TO REVIEW SUCH
APPLICATIONS. CGS HAS PERFORMED SUCH REVIEWS SINCE 1972 AND SINCE 1983 HAS BEEN
REQUIRED BY LAW TO RECOVER THE FULL DIRECT COST OF SUCH REVIEWS MAKING THIS A
TOTALLY CASH -FUNDED ACTIVITY OF CGS. SCHOOL SITE REVIEWS ARE REQUIRED UNDER
H.B.104B (1984) .
NEARLY ALL COUNTIES AND MUNICIPALITIES HAVE ELECTED TO PASS THROUGH THE REVIEW
FEE TO THE LAND USE APPLICANT. SOME JURISDICTIONS REQUIRE A CHECK "UP FRONT"
FOR THE FEE TO CGS. OTHER JURISDICTIONS PREFER THAT WE INVOICE THE APPLICANT
DIRECTLY AS IN YOUR CASE. SUBSEQUENT REVIEWS OF REVISED OR ADDITIONAL MATERIAL
TO THE SAME APPLICANT ARE BILLED ON AN HOURLY BASIS.
IF YOU BANE ANY QUESTIONS, PLEASE CALL JILL CARLSON, LAND USE REVIEW
ADMINISTRATOR AT (303) 384-2643.
TERMS: NET 30 DAYS
$759.30
TOTAL $759.30
PLEASE SHOW INVOICE..mNUMBER ON PAYMENT
W 1
RECEIVED WITHIN 30 DA
COLORADO G _ KOLO GICAL SURVEY
1801 19th Street
Golden, Colorado 80401
May 16, 2018
Michael Hall
Weld County Planning
1555 N. 17t11 Ave.
Greeley, CO 80631
Subject:
Location:
NE NW, NW NE, and SW NE Section 9,
T1N, R68W, 6th P.M.
40.0679, -105.0072
PUDZ18-0001, Longs Peak Estates Amended PUD
Weld County, CO: CGS Unique No. WE -18-0048
Dear Mr. Hall:
Karen Berry
State Geologist
Colorado Geological Survey has reviewed the PUDZ18-0001 referral, for an amendment to the Longs Peak
Estates PUD to allow two homes per lot. The available referral documents include a request for CGS's review
(April 24, 2018), a drainage letter (H&A Engineering, March 25, 2018), a PUD Change of Zone Application,
including Conceptual Development Guide (signed March 19, 2018), a set of three Amended Longs Peak
Estates PUD final plat sheets (Civil Arts, March 28, 2018), and other documents.
CGS reviewed the Longs Peak Estates property and consultants' reports extensively in 2001-2003. The site is
undermined by the Morrison Mine (active 1935-1953, mined coal seam thickness 6-8 feet, depth of workings
65 feet beneath Lot 2, to 110 feet under the southern boundary) and the Clayton Mine (depth unknown but
below the Morrison, coal seam thickness approximately 9 feet). The mines overlap in some areas, resulting in
a significantly greater subsidence hazard. High resolution lidar data indicate numerous subsidence features
such as sinkholes and troughs at the surface in the southern portion of Lot 2 and on Lots 3 through 7.
Residential hazard insurance does not cover damage from ground movement, and CGS discourages
development and additional density in areas exposed to geologic hazards such as mine subsidence. However:
Provided all habitable structures are located within the building envelopes shown on the plat, and the
restrictions and recommendations discussed in CGS's previous review letters (foundation length of
structures limited to 60 feet, subgrade construction extending a maximum depth of 7 feet below the
ground surface, flexible underground utilities and utility connections designed to accommodate strain)
are adhered to, CGS has no objection to approval of the PUD amendment to allow two homes per lot.
Thank you for the opportunity to review and comment on this project. If you have questions or require further
review, please call me at 303-384-2643, or e-mail carlson@mines.edu.
Jill Carlson, C.E.G.
Engineering Geologist
WE -18-0048_1 PUDZ18-0001 Longs Peale Estates Amended PUD Zone Change
3:14 PM, 05/16/2018
ORG
2200
TYPE
CO
COLORADO GEOLOGICAL SURVEY
1801 19th Street
Golden, CO 60401
PHONE (303)364-2655
INVOICE
INVOICE #
19-057
INVOICE DATE
28 -Aug -18
Colson Inc.
Attn: Mark Bowman
2567 Dawn Ct
Erie, CO 80516
RE:
Lot 5 Longs Peak Estates
Jill 'Carlson WE -19-0006
2 hours at $130.62 per hour.
Colorado Geological Survey review at the request o£
Weld County
$261.24
EXPLANATION OF CGS INVOICE FOR LAND USE REVIEWS:
UNDER C.R.S. 30-28-101, ET SEQ. (SENATE BILL 35 OF 1972) COUNTIES ARE REQUIRED
TO SUBMIT PROPOSED LAND USE APPLICATIONS AND SUPPORTING TECHNICAL REPORTS TO THE
COLORADO GEOLOGICAL SURVEY (CGS) "FOR AN EVALUATION OF THOSE GEOLOGIC FACTORS
WHICH WOULD HAVE A SIGNIFICANT IMPACT ON THE PROPOSED USE OF THE LAND."
MUNICIPALITIES SUBMIT PROPOSED LAND USE APPLICATIONS AT THEIR DISCRETION (C.R.S.
29-20-101) AND BOTH COUNTIES AND MUNICIPALITIES CAN SUBMIT REFERRALS TO CGS
UNDER EH 1041 (C.R.S. 24-65.1-101). CGS IS OBLIGATED TO REVIEW SUCH
APPLICATIONS. CGS HAS PERFORMED SUCH REVIEWS SINCE 1972 AND SINCE 1983 HAS BEEN
REQUIRED BY LAW TO RECOVER THE FULL DIRECT COST OF SUCH REVIEWS MAKING THIS A
TOTALLY CASH -FUNDED ACTIVITY OF CGS. SCHOOL SITE REVIEWS ARE REQUIRED UNDER
H.B,10.45 (198.4,)
NEARLY ALL COUNTIES AND MUNICIPALITIES HAVE ELECTED TO PASS THROUGH THE REVIEW
FEE TO THE LAND USE APPLICANT. SOME JURISDICTIONS REQUIRE A CHECK "UP FRONT"
FOR THE FEE TO CGS. OTHER JURISDICTIONS PREFER THAT WE INVOICE THE APPLICANT
DIRECTLY AS IN YOUR CASE. SUBSEQUENT REVIEWS OF REVISED OR ADDITIONAL MATERIAL
TO THE SAME APPLICANT ARE BILLED ON AN HOURLY BASIS.
IF YOU HAVE ANY QUESTIONS, PLEASE CALL JILL CARLSON, LAND USE REVIEW
ADMINISTRATOR AT (303) 384-2643.
TOTAL $261.24
TERMS: NET 30 DAYS
PT,EASE, ,S FOW INVOICE=. NUMBER :0N PAYMENT
I,LECION FEES WILL BE ADDED TO ACCOUNT BALANCE IE FULL
IS NOT RECEIVED WITHIN 30TDAY$\`
COLORADO GEOLOGICAL SURVEY
1801 19th Street
Golden, Colorado 80401
August 27, 2018
Michelle Martin
Weld County Planning
1555 N. 17th Ave.
Greeley, CO 80631
Subject: GHDPI8-0003, Lot 5 Longs Peak Estates
Weld County. CO: CGS Unique No. WE -19-0006
Dear Ms. Martin:
Location:
SW NE Section 9,
TIN, R68Vtf, 6th P.M.
40.0684, -105.0065
Karen Berry
State Geologist
Colorado Geological Survey has reviewed the GHDP 18-0003 referral, for a new home on Lot 5 of Longs
Peak Estates. None of the referral documents discuss or show the location or dimensions of the proposed
home.
CGS reviewed the Longs Peak Estates property and consultants' reports extensively in 2001-2003. The site is
undermined by the Morrison Mine (active 1935-1953, mined coal seam thickness 6-8 feet, depth of workings
65 feet beneath Lot 2, to 110 feet beneath the southern boundary) and the Clayton Mine (depth unknown but
below the Morrison, coal seam thickness approximately 9 feet). The mines overlap in some areas, resulting in
a significantly greater subsidence hazard. High resolution LiDAR data indicate several subsidence features
(sinkholes and troughs) on and adjacent to Lot 5.
Unpredictable collapse of mine workings many years after the mine was abandoned, and ongoing erosion of
fine-grained soils into voids within the collapse zone, can cause surface damage such as sinkholes, trough
subsidence, strain (deformation due to stress), differential movement, etc. Collapse that propagates to the
surface beneath structures can result in a loss of support and damage to the undermined structure, pavement,
etc. Buildings can be pulled apart as the ground sags and tilts into the edge of a trough. Utilities such as water,
sewer, electrical, and gas lines can be damaged or disrupted by subsidence -related ground movement.
Restricting foundation dimensions and the surface area of any below -grade walls in contact with sagging soils
can reduce but not eliminate the risk of subsidence -related damage.
Residential hazard insurance does not cover damage from ground movement, and CGS discourages
development and additional density in areas exposed to geologic hazards such as mine subsidence. CGS
recommends that the applicant read the following publication by the Colorado Division of Reclamation,
Mining, and Safety and CGS: Subsidence Above Inactive Coal Mines: Information for the Homeowner.
CGS recommends approval of the requested geologic hazard development permit for Lot 5 of Longs Peak
Estates only if the applicant complies with the following:
• All habitable structures on Lot 5 must be located within the building envelope shown on the plat.
® No foundation dimension (length, width) should exceed 60 feet.
o Subgrade (basement) construction may extend a maximum depth of 7 feet below the ground
surface.
6 Underground utilities and utility connections should be designed to accommodate strain.
WE -19-0006_1 GHDP18-0003 Lot 5 Longs Peak Estates
3:14 PM, 08/27/2018
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