HomeMy WebLinkAboutPackets - Stormwater Utillity Commission (134)AGENDA
ORO VALLEY STORMWATER UTILITY COMMISSION
REGULAR SESSION
MAY 17, 2018
HOPI CONFERENCE ROOM
11000 N. LA CANADA DRIVE
REGULAR SESSION AT OR AFTER 4 P.M.
CALL TO ORDER
ROLL CALL
CALL TO THE AUDIENCE - At this time, any member of the public is allowed to
address the Commission on any issue not listed on today’s agenda. Pursuant to
the Arizona Open Meeting Law, individual Commission members may ask Town
staff to review the matter, ask that the matter be placed on a future agenda, or
respond to criticism made by speakers. However, the Stormwater Utility
Commission may not discuss or take legal action on matters raised during "Call
to the Audience." In order to speak during "Call to the Audience" please specify
what you wish to discuss when completing the blue speaker card.
1. Approval of the April 19, 2018 regular session minutes
2. Discussion with Town Council Liaison to the Stormwater Utility Commission Joe
Hornat regarding recent Town Council meetings
3. Update on Stormwater meetings and events
4. Discuss on-going Stormwater projects and rain storm events
A. Overview discussion of long range planning of new development
projects
B. Pima County Regional Flood Control District request for CIP Projects
C. Coordination with PCRFCD
D. Discuss the May 1, 2018 Field Trip
5. Discuss Stormwater Financials
6. Discussion and possible action for future agenda items
7. Set the June 2018 meeting date and time
ADJOURNMENT
POSTED: 5/9/18 at 5:00 p.m. by pp
When possible, a packet of agenda materials as listed above is available for public
inspection at least 24 hours prior to the Stormwater Utility Commission meeting in the
Town Clerk's Office between the hours of 8:00 a.m. and 5:00 p.m.
The Town of Oro Valley complies with the Americans with Disabilities Act (ADA). If any
person with a disability needs any type of accommodation, please notify the Town
Clerk’s Office at least five days prior to the Commission meeting at 229-4700.
INSTRUCTION TO SPEAKERS
Members of the public have the right to speak during any posted public hearing.
However, those items not listed as a public hearing are for consideration and
action by the Stormwater Utility Commission during the course of their business
meeting. Members of the public may be allowed to speak on these topics at the
discretion of the Chair.
If you wish to address the Commission on any item(s) on this agenda, please complete
a blue speaker card and give it to the Recording Secretary. Please indicate on the
speaker card which item number and topic you wish to speak on, or if you wish to speak
during “Call to Audience,” please specify what you wish to discuss when completing the
blue speaker card.
“Notice of Possible Quorum of the Oro Valley Town Council, Boards, Commissions,
and Committees: In accordance with Chapter 3, Title 38, Arizona Revised Statutes and
Section 2-4-2 of the Oro Valley Town Code, a majority of the Town Council, Board of
Adjustment, Conceptual Design Review Board, Historic Preservation Commission,
Parks and Recreation Advisory Board, Planning and Zoning Commission, and Water
Utility Commission may attend the above referenced meeting as a member of the
audience only.”
Community Development and Public Works Annual Work Plan
Stormwater Utility Division FY 2017-2018
2017 2018
Jul l Stormwater Draft Annual Report Jan l Monsoon Project Review
l RFCD Plan Development l Town Council - Public Hearing new rate
l FY 2019 Budget Submittal - Draft
l RFCD Selects projects
2017 2018
Aug l Annual Budget Review/Fee Increase Feb l Draft RFCD Selection of FY 2018 Projects
- FY 2017 Close Out l New rate becomes effective
- FY 2018 Current Outlook l FY 2018 Budget Submittal - Final
- FY 2019 Projection
l
l RFCD Jurisdiction Letter Request Received
2017 2018
Sep l Submit Annual ADEQ Report Mar l Work Plan Progress Report - TCR
l Review rates analysis report l New rates are billed
l ADEQ MS4 Permit Update
Maps Section 4.2
Runoff Control Section 6.4.4.2 part h
Post-Cont Section 6.4.5.3
Prog. Assessment Section 8.0
Annual Report 8.4
l RFCD Receives Proposals
2017 2018
Oct l 6-month update to Council TCR Apr l Public Outreach / Education Review
l SWUC make rate recommendation
l RFCD Ranks Proposals
2017 2018
Nov l Town Council - Notice of Intent (if passed)May l Begin Monsoon Prep
(Publish NOT on Town website (60-days)l Tour
l RFCD Final Ranking
2017 2018
Dec l Annual Rate review w/ Council Jun
l Budget developed of Small CIP based on
RFCD Project Selection
l Publish NOI in Daily Territorial
l Draft 10 Yr. - CIP program large FY 2017-27
l Ranking presented to RFCD Advisory Com.
Public Works Week
Public Outreach Plan - timeline development
NATIONAL PREPAREDNESS MONTH
5/8/2018 11:36 AM C:\Users\cryan\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Outlook\AJS021BZ\Annual Work Plan.xlsx
Community Development and Public Works Annual Work Plan
Stormwater Utility Division FY 2018-2019
2018 2019
Jul l Stormwater Draft Annual Report Jan l Monsoon Project Review
l RFCD Plan Development l Town Council - Public Hearing new rate
l FY 2020 Budget Submittal - Draft
l Calle Buena Vista Construction
2018 2019
Aug l Annual Budget Review/Fee Increase Feb
- FY 2018 Close Out l New rate becomes effective
- FY 2019 Current Outlook l FY 2020 Budget Submittal - Final
- FY 2019 Projection
2018 2019
Sep l Submit Annual ADEQ Report Mar l Work Plan Progress Report - TCR
l Review rates analysis report l New rates are billed
l ADEQ MS4 Permit Update
Polluntant Control Section 3.1
ERP Section 3.3
Post- Construction Section 6.4.5.1
2018 2019
Oct l 6-month update to Council TCR Apr l Public Outreach / Education Review
l SWUC make rate recommendation l Annual Commision Tour
l Calle Buena Vista Design
2018 2019
Nov l Town Council - Notice of Intent (if passed)May l Begin Monsoon Prep
(Publish NOT on Town website (60-days)
2018 2019
Dec l Annual Rate review w/ Council Jun l Top 10 CIP Selected for FY 2020
l Top 10 Small Proj.. Selected for FY 2020
l Publish NOI in Daily Territorial
l Draft 5 Yr. - CIP program large FY 2020-30
NATIONAL PREPAREDNESS MONTH
Public Works Week
April YTD Financial Status FY 2017/2018
Stormwater Utility Fund
% Budget Completion through April--83%
Est. Actuals
thru 04/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
REVENUES:
CHARGES FOR SERVICES 1,137,756 1,402,500 81.1%1,394,180 -0.6%
INTEREST INCOME 3,956 500 791.2%4,000 700.0%
MISCELLANEOUS 467 - 0.0%467 0.0%
TOTAL REVENUES 1,142,179 1,403,000 81.4%1,398,647 -0.3%
Est. Actuals
thru 04/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
EXPENDITURES:
PERSONNEL 503,116 670,099 75.1%670,099 0.0%
OPERATIONS & MAINTENANCE 206,300 381,976 54.0%431,132 12.9%
CAPITAL 171,099 253,625 67.5%206,512 -18.6%
TOTAL EXPENDITURES 880,515 1,305,700 67.4%1,307,743 0.2%
Does not include non-cash outlays for depreciation
SURPLUS / (DEFICIT)261,664 97,300 90,904
BEGINNING RESERVE BALANCE 603,121
Plus: Surplus / (Deficit)90,904
SUBTOTAL ENDING RESERVE BALANCE **694,025
LESS: VEHICLE & EQUIPMENT RESERVE (170,306)
TOTAL ENDING RESERVE BALANCE **523,719
Reserve Policy Calculation 37.6%
* Year-end estimates are subject to further revision
** The ending reserve amount is an estimate subject to further revision, and may not tie to the cash balance
in the fund due to timing of revenues received and expenditures paid
FEBRUARY YTD Financial Status FY 2017/2018
Stormwater Utility Fund
% Budget Completion through February--67%
Actuals thru
2/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
REVENUES:
CHARGES FOR SERVICES 893,268 1,402,500 63.7% 1,394,180 -0.6%
INTEREST INCOME 2,599 500 519.8% 3,154 530.8%
MISCELLANEOUS 51 - 0.0%51 0.0%
TOTAL REVENUES 895,918 1,403,000 63.9% 1,397,385 -0.4%
Actuals thru
2/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
EXPENDITURES:
PERSONNEL 386,615 670,099 57.7% 670,099 0.0%
OPERATIONS & MAINTENANCE 157,786 381,976 41.3% 380,000 -0.5%
CAPITAL 153,355 253,625 60.5%203,625 -19.7%
TOTAL EXPENDITURES 697,756 1,305,700 53.4% 1,253,724 -4.0%
Does not include non-cash outlays for depreciation
SURPLUS / (DEFICIT) 198,162 97,300 143,661
BEGINNING RESERVE BALANCE 603,121
Plus: Surplus / (Deficit)143,661
SUBTOTAL ENDING RESERVE BALANCE **746,782
LESS: VEHICLE & EQUIPMENT RESERVE (170,306)
TOTAL ENDING RESERVE BALANCE **576,476
Reserve Policy Calculation 41.3%
* Year-end estimates are subject to further revision
** The ending reserve amount is an estimate subject to further revision, and may not tie to the cash balance
in the fund due to timing of revenues received and expenditures paid
4/20/2018 3:50 PM
Nakoma Sky (Stop 7)
King Residence (Stop 3)
Oracle Crossing (Stop 2)
Logans Crossing (Stop 11)
Moore Road Extension (Stop 9)
680 W Calle Concordia (Stop 1)
E Bridal Veil Falls Rd (Stop 8)
Linda Vista Bouler Oro Valley 2 (Stop 6)
Lot 131 Shadow Mountain Estates (Stop 4)CIP Project New Culvert Location (Stop 5)
Highlands Mobile Home Park Stops 10A & 10B
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EINNOVATION PARK1STLA CHOLLAStormwater Utility CommissionMay 1, 2018 Field Trip
Leg end
680 W Calle Concordia (Stop 1)
Oracle Crossing (Stop 2)
King Residen ce (Stop 3)
Lot 131 Shad ow Mount ain Estates (Stop 4)
CIP Project New Cu lve rt Location (Stop 5)
Linda Vista Bouler Oro Valley 2 (Stop 6)
Nako ma Sky (Stop 7)
E Bridal Veil Falls Rd (Stop 8)
Moore Ro ad Extension (Stop 9)
Highla nds Mobile Hom e Pa rk Stops 10A & 10B
Logans Cro ssin g (Stop 11)
Major Streets
To wn Limits ¯Miles012
Stormwater Function: Verification of Municipal Good-Housekeeping Practices.
We are here because:
1. Each MS4 Operator, including the Town, must develop and implement Pollution
Prevention and Good Housekeeping procedures for Municipal Operations Facilities.
2. This Operations and Maintenance Plan includes:
a. An inventory of municipal operations facilities that potentially discharge pollution.
b. Description of maintenance and training activities, maintenance schedules, and long-
term inspection schedules and procedures.
c. Description of stormwater controls to reduce or eliminate the discharge of pollutants.
Conclusion:
1. This facility currently exercises appropriate Good-Housekeeping Practices.
2. We need to complete the preparation of a Municipal Operation and Maintenance Plan,
as well as a Spill Prevention, Containment and Countermeasure Plan for the fueling
station.
Oro Valley Stormwater Utility
Field Trip 2018
680 West Calle Concordia. Town of Oro
Valley Municipal Operations Center May 1, 2018 Stop Number 1.
Stormwater Function: Private Drainage Infrastructure Inspection, Maintenance and Repair.
We are here because:
1. The SWU inspects about 20% of all private stormwater facilities each year to ensure
they continue to function as designed.
2. During past inspections, water was seen in the bottom of this detention basin for
periods longer than 12 hours after cessation of rainfall. Twelve hours is the maximum
post-rain ponding period normally allowed.
3. Furthermore, nearby property owners have complained about excessive erosion and
sedimentation downstream of this facility.
4. Sections 15-24-14.P and 17-3-9.B of Town of Oro Valley Code require property owners
to maintain their private stormwater infrastructure.
Conclusion: The Stormwater Utility is currently working with the shopping center owner to
design and construct improvements to increase storage, quickly drain the basin, and to
change the direction of outflows.
Oro Valley Stormwater Utility
Field Trip 2018
7613 N. Oracle Road. Oracle Crossing
Stormwater Detention Basin May 1, 2018 Stop Number 2.
Stormwater Function: Drainage Complaints with Evaluation and Response.
We are here because:
1. The adjacent property owner complained saying erosion of the channel bank is beginning to
undermine their carport foundation.
2. Evaluation confirmed that erosion of channel bottom and overbank areas is occurring. Analysis
also confirmed that this erosion is long-term channel downcutting caused by instream sediment
being blocked by upstream culverts. Further analysis showed that removing the sediment
blockage by increasing upstream culvert sizes was economically untenable, with the resulting
recommendation to construct an erosion barrier between the eroding sandbed channel and the
carport.
3. The selected barrier design consisted of a 120-foot-long row of rock-filled gabion baskets located
within and along the edge of the Public Drainage Easement.
Conclusion: Long-term channel-bottom degradation is a Town-wide problem, especially in older (pre-
1990’s) developments, where culvert design typically did not include upsizing to accommodate sediment
movement. As a consequence, Town’s ability to implement corrective action can be limited, especially in
areas where public drainage easements are nonexistent or otherwise undersized.
Oro Valley Stormwater Utility
Field Trip 2018
8975 N. Overlook Dr.
Lot 135 Shadow Mountain Estates May 1, 2018 Stop Number 3.
Oro Valley Stormwater Utility
Field Trip 2018
9065 N. Overlook Dr.
Lot 131 Shadow Mountain Estates May 1, 2018 Stop Number 4.
Page 1 of 2
Before
After
Stormwater Function: Drainage Complaints with Evaluation and Response.
We are here because:
1. The property owner complained saying stormwater runoff from Overlook Drive had been
diverted onto their property causing erosion. They requested remediation.
2. Evaluation confirmed the placement of extruded curb to mitigate sheet flow from
crossing yards and driveways resulted in shifting the problem tor downgradient
properties. Analysis of alternatives resulted in the recommendation to build an erosion-
resistant channel to take street runoff to the Carmack Wash tributary located to the rear
of the subject property.
Conclusions:
1. Beware of the “Law of Unintended Consequences”.
2. Ensure retrofit mitigation elements resolve the problem and not “relocate” and/or
exacerbate it.
Oro Valley Stormwater Utility
Field Trip 2018
9065 N. Overlook Dr.
Lot 131 Shadow Mountain Estates May 1, 2018 Stop Number 4.
Page 2 of 2
04-23-18
photograph of
Calle Buena
Vista at
Carmack Wash.
This is the site
of a new box
culvert planned
for SWU-funded
construction in
FY 2018-2019.
Floodplain Boundary Map from 2017 Pima County Carmack Wash Study.
Town of Oro Valley Stormwater Utility
Field Trip 2018
Carmack Wash
at North Calle Buena Vista May 1, 2018 Stop Number 5.
Page 1 of 2
Stormwater Function: Capital Improvement Projects with Selection, Design and Construction
Oversight.
We are here because:
1. Calle Buena Vista is often closed to vehicular traffic during and following rainfall events.
Road closures are frequent enough during the summer rainy season to warrant storage
of roadside barricades at this location for placement by OV Police and post-rain removal
by OV Operations.
2. Reopening of this roadway segment after rainfall closures often requires removal of
sediment from the roadbed and shoulders. It is estimated that there are ten (10) closures
each year, at a direct cost of about $300 to $1000 each (excluding ~3X Overhead).
3. More importantly, flooded at-grade dip crossings such are safety hazards because of poor
sight visibility during dry weather, and the reduction of vehicular maneuverability during
wet weather caused by possible hydroplaning or the accumulation of sand on the travel
surfaces.
4. The Town routinely monitors nineteen (19) similar at-grade dip crossings (called Hot
Spots), and this site was chosen for culvert construction because it has relatively high
traffic volumes, it serves at an important travel route for young school-age drivers, and it
serves at travel route for emergency vehicles, including the Goulder Ranch Fire
Department on Linda Vista Boulevard. Further, seven (7) of the Hot Spots are planned for
culvert construction as part of the ongoing La Cholla Boulevard project for the RTA.
Conclusions: The in-house design of the new Buena Vista box culvert is underway, with the
recent solicitation of a Land Surveyor to prepare base maps. Design is planned for completion
Mid-October 2018, tentatively followed by Contractor solicitation in Mid-December 218, and
likely construction between February and May 2019. This schedule is tentative. The current
budget is $200,000.
Town of Oro Valley Stormwater Utility
Field Trip 2018
Carmack Wash
at North Calle Buena Vista May 1, 2018 Stop Number 5.
Sheet 2 of 2
Location map of proposed subdivision (Oracle at
Linda Vista)
Proposed Subdivision Site Plan.
FLO-2D Model of Tributary “E” to upper
Carmack Wash showing 100-year flow-
velocity vectors.
Oro Valley Stormwater Utility
Field Trip 2018
Oracle Rd. & Linda Vista Blvd.
Boulder Oro Valley 2 Subdivision.
May 1, 2018 Stop Number 6
Page 1 of 2.
03-19-2018 photograph of an
existing concrete channel (pre-
1978) near Oracle Road, and
upstream of the planned
development. This constructed
channel was not included in the
FLO-2D model.
Stormwater Function: Review subdivision drainage reports and site plans for compliance with applicable
Town of Oro Valley, Pima County, Arizona, and Federal codes, regulations, ordinances, and/or laws.
We are here because:
1. The Town recently received an application for a Plan Amendment and Rezoning for
approximately 20 acres to build 27 multi-family residential buildings, with a total of 408 dwelling
units.
2. The Stormwater Utility has the opportunity to review the pending application and to stipulate
conditions for the plan.
3. Later in the subdivision design process, Stormwater will review drainage reports, site plans, and
private improvement plans for Code compliance and local drainage-design standards.
4. This proposed project will require special attention to drainage design associated with Tributary
“E” of Carmack Wash, including complications caused by a 40-year-old diversion channel.
Conclusions: We are fortunate to have high-quality professional staff in the Stormwater Utility and
development services to take on challenging projects.
Oro Valley Stormwater Utility
Field Trip 2018
Oracle Rd. & Linda Vista Blvd.
Boulder Oro Valley 2 Subdivision.
May 1, 2018 Stop Number 6
Page 2 of 2.
Location Map showing
subdivision layout.
April 11, 2018 photograph of
the new Nakoma Sky Soil
Cement Bank Protection. View
looking northwest along
Canada Del Oro Wash.
Oro Valley Stormwater Utility
Field Trip 2018
Nakoma Sky.
First Ave. at CDO Wash May 1, 2018 Stop Number 7.
Page 1 of 2
Stormwater Function:
1. Cooperate with RFCD to review hydrologic and hydraulic design of new bank protection,
as well as with the review and acceptance of a FEMA Letter of Map Revision to revise
the CDO floodplain and floodway limits. Consideration was also given to the effect of
this project on the existing levee located across the wash.
2. Review and accept the Drainage Report and Final Site Plan for the Nakoma Sky
development.
3. Review and accept the Private Improvement Plan for Nakoma Sky development,
including mass grading, final grading, street design, channel design, and overall
stormwater design.
4. Conduct frequent site inspections for SWPPP compliance.
We are here because: (Item #4)
The Town of Oro Valley is required by State mandate, to inspect all construction sites for
appropriate stormwater control mechanisms. These control measures and site
operators shall:
1. Minimize the amount of disturbed area and protect natural resources;
2. Stabilize sites when projects are complete or operations have temporarily ceased;
3. Protect slopes on the site of the construction activity;
4. Protect storm drain inlets and armor all newly-constructed outlets;
5. Use perimeter controls at the site;
6. Stabilize entrance(s) and exit(s) at the location of the construction activity to prevent
off-site tracking; and
7. Inspect stormwater controls at consistent intervals.
Conclusions: This project required a substantial amount of staff time this past year, and
required close coordination with multiple outside agencies, as well as the Town. Paul Keesler
and David Laws are to be commended for their efforts to maintain the demanding schedule
that was required by Nakoma Sky. John Lynch/ SWU was also highly instrumental in keeping
reviews moving forward.
Oro Valley Stormwater Utility
Field Trip 2018
Nakoma Sky. May 1, 2018 Stop Number 7.
Page 2 of 2
Location Map showing highly
urbanized watershed. It is
believed that the clear-water
runoff from this watershed is
causing the long-term channel
bottom degradation that is
occurring at this location.
Nov. 17, 2017 photograph of
scour at the downstream end of
the concrete chute.
Oro Valley Stormwater Utility
Field Trip 2018
Rancho Vistoso Parcel T Neighborhood 5
common area, private drainage
May 1, 2018 Stop Number 8.
Page 1 of 2
Nov. 17, 2017 photograph of
scour and resulting cliff face at
the downstream end of the
concrete chute
Stormwater Function: Private Drainage Infrastructure Inspection, Maintenance and Repair.
We are here because:
1. Past inspections revealed progressive increases in the size and depth of the scour hole
that has formed at the downstream terminus of this concrete chute.
2. This is a significant safety hazard requiring prompt attention by the HOA owner.
3. Earlier attempts of control scour with dumped rock rip appear to be ineffective in
controlling long-term channel degradation caused by clear-water flows.
4. Sections 15-24-14.P and 17-3-9.B of Town of Oro Valley Code require property owners to
maintain their private stormwater infrastructure.
Conclusion: The Stormwater Utility is currently working with the engineer for the HOA
Management Company to evaluate causation and to design and construct new
improvements to control local scour and long-term channel-bottom degradation.
Oro Valley Stormwater Utility
Field Trip 2018
Rancho Vistoso Parcel T Neighborhood 5
common area, private drainage
May 1, 2018 Stop Number 8.
Page 2 of 2
Map of lower Honey Bee Wash showing
limits of the FEMA 100-year floodplain, and
the alignment of new bank protection for
Altera at VistosoTrails subdivision. The areas
west of the new bank protection were
removed from the FEMA Zone A floodplain
by a CLOMR/LOMR. The planned Moore
Road extension is located below or south of
this new bank protection.
North is Up.
This is a conceptual plan for the new Big Wash Rezoning (OV1701630) showing the limits of new
development along with the alignment of the extension of Moore Road. North is left.
Oro Valley Stormwater Utility
Field Trip 2018
Moore Road Extension &
Alterra at Vistoso Trails. May 1, 2018 Stop Number 9.
Page 1 of 2
Stormwater Function: Cooperate with RFCD to review the hydrologic and hydraulic design of
new bank protection, as well as with the review and acceptance of a FEMA Letter of Map Revision
to revise the Honey Bee Wash floodplain limits.
We are here because: The design of the Moore Road extension is underway, along with the
hydraulic design of the planned soil cement bank protection. RFCD has jurisdiction over Honey
Bee and Big Wash, including the maintenance of new bank protection.
Conclusions: This is the beginning of another large, important project in our community. We are
pleased to be part of the development team.
Oro Valley Stormwater Utility
Field Trip 2018
Moore Road Extension & Alterra at
Vistoso Trails. May 1, 2018 Stop Number 9.
Page 2 of 2
Floodplain Map from 1990 Basin Management Study
Floodplain Map from 2013 Technical Data Notebook study.
Oro Valley Stormwater Utility
Field Trip 2018
Highlands Mobile Home Park. May 1, 2018 Stop Number 10A.
Page 1 of 2
Stormwater Function:
1. Review building-permit applications for replacement manufactured homes for
compliance with Town’s Floodplain Regulations.
2. Continue coordination with the Pima County Regional Flood Control District (RFCD) to
complete the draft 2013 Highland Wash study.
3. Respond to citizen and HOA inquiries regarding floodplain status.
We are here because:
1. A 1990 Basin Management Study showed a significant number of properties to be in the
regulatory 100-year flood plain of lower Highland Wash.
2. The updated 2013 RFCD also showed a significant number of properties in the flood plain.
Conclusion:
1. Continue asking the RFCD to complete their latest study.
Oro Valley Stormwater Utility
Field Trip 2018
Highlands Mobile Home Park. May 1, 2018 Stop Number 10A.
Page 2 of 2
Photograph of the outlet of the
existing 4-cell 12’ x 5’ RCBC-
Arch culvert. It is nearly full of
sand.
Photograph of inside of one
cell of the existing 4-cell 12’ x
5’ RCBC-Arch culvert, showing
the progress being made to
the removal of sand by
specialize mechanized
equipment.
Oro Valley Stormwater Utility
Field Trip 2018
Highland Wash at Lambert Lane. May 1, 2018 Stop Number 10B.
Page 1 of 2
Before
After
Stormwater Function: Capital Improvement Projects with Selection, Design and Construction
Oversight.
We are here because:
1. The existing box culvert along Lambert Lane at Highland Wash often fills with sediment
during flood events. Regular inspections tracks the degree of filling, and ultimately results
in the removal of sand, at the expense of the Town.
2. This culvert was constructed in 2007. It was then cleaned in 2012. Photographs show the
culvert was nearly full of sediment in 2014 and then mostly full in 2016. It was cleaned
again in April 2018 by the Town at the cost of about $59,000. Depending on rainfall, the
culvert is expected to require sand removal once every five years.
3. Additional analysis is needed to see if anything can be done to reduce sedimentation of
the culvert.
Conclusions: During the future design of culverts, it is recommended that it include analysis of
its sediment-transport capacity in addition to that of flood waters.
Oro Valley Stormwater Utility
Field Trip 2018
Highland Wash at Lambert Lane. May 1, 2018 Stop Number 10B.
Page 2 of 2
Location Map of the Public Trail Easement
Post Flood Photo 2004
Oro Valley Stormwater Utility
Field Trip 2018
Logans Crossing. May 1, 2018 Stop Number 11
Page 1 of 3.
Post Flood Photo 2008
Post Flood Photo 2009
Oro Valley Stormwater Utility
Field Trip 2018
Logans Crossing. May 1, 2018 Stop Number 11
Page 2 of 3.
Post Construction Photo 2017
Stormwater Function: Capital Improvement Projects: Selection, Design and Construction
Oversight.
We are here because: This is a recently completed project.
Conclusions: This area will be revisited in the future.
Oro Valley Stormwater Utility
Field Trip 2018
Logans Crossing. May 1, 2018 Stop Number 11
Page 3 of 3.
FY 2018 Programming.xlsx 4/11/2018 2:38 PM
FY 2018 Stormwater Programed Expenditures
Budget Amount Timing
Consulting - #6005 Budgeted Revised Spent Notes
Project Reviews 30,000$ 45,000$ -$ In process consultant selected
Easement - Surveys -$ 60,000$ -$ Competitive Bids due April 27, 2018
Soil Testing -$ 5,000$ 14,000$ Completed - Ninny & Moore
SWPPPs and Spill Containment -$ 25,000$ -$ NEW - internal review
30,000$ 135,000$ 14,000$ Programmed
Maintenance - #7003 Budgeted Revised Spent
Highlands - Clean Culverts 40,000$ 58,579$ -$ KE&G proposal
Shadow Mountain Estates 20,000$ -$ -$ Done in house
Pistachio/Pomegranate Gabions 25,000$ -$ -$ Done in house
Lambert Lane Soil 5,000$ -$ -$ Done in house
Suffolk Hills 10,000$ -$ -$ Done in house
100,000$ 58,579$ -$ Save for Low Water? FY 2019
Projects - #9036 Budgeted Revised Spent
Lambert Lane Culvert 50,000$ 50,000$ -$ FY 2019 - Lambert - Jose R.
Cañada Hills Channels 80,000$ -$ -$ Done in house
Overlook - Drainage -$ 58,103$ 58,103$ Completed
130,000$ 108,103$ 58,103$
Equipment - #9024 Budgeted Revised Spent
Gannon - Culvert Cleaning -$ -$ -$ Per Mjacobs versus FY 2019
-$ -$ -$ Budget too low
Allocated Funding 260,000$ 301,682$ 72,103$
JANUARY YTD Financial Status (revised)FY 2017/2018
Stormwater Utility Fund
% Budget Completion through January--58%
Actuals thru
1/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
REVENUES:
CHARGES FOR SERVICES 792,689 1,402,500 56.5% 1,394,180 -0.6%
INTEREST INCOME 2,299 500 459.8% 3,154 530.8%
MISCELLANEOUS 51 - 0.0%51 0.0%
TOTAL REVENUES 795,039 1,403,000 56.7% 1,397,385 -0.4%
Actuals thru
1/2018 Budget
%
Actuals
to
Budget
Year End
Estimate *
YE %
Variance
to Budget
EXPENDITURES:
PERSONNEL 330,974 670,099 49.4% 670,099 0.0%
OPERATIONS & MAINTENANCE 135,684 381,976 35.5% 336,000 -12.0%
CAPITAL 90,252 253,625 35.6%203,625 -19.7%
TOTAL EXPENDITURES 556,910 1,305,700 42.7% 1,209,724 -7.4%
Does not include non-cash outlays for depreciation
SURPLUS / (DEFICIT) 238,129 97,300 187,661
BEGINNING RESERVE BALANCE 603,121
Plus: Surplus / (Deficit)187,661
SUBTOTAL ENDING RESERVE BALANCE **790,782
LESS: VEHICLE & EQUIPMENT RESERVE (170,306)
TOTAL ENDING RESERVE BALANCE **620,476
Reserve Policy Calculation 44.5%
* Year-end estimates are subject to further revision
** The ending reserve amount is an estimate subject to further revision, and may not tie to the cash balance
in the fund due to timing of revenues received and expenditures paid
4/20/2018 3:44 PM
4/20/2018 3:58 PM STW Per
https://orovalleyaz.sharepoint.com/sites/publicworks/Budget/Stormwater Utility Supplement/STORMWATER UTILITY BUDGET MGMT PROJECTIONS_FY
2019_03222018_Final.xlsx
Stormwater Fund 5 Year Forecast Revised:4/20/2018
FY 2017/18 FY 2018/19 FY 2019/20 FY 2020/21 FY 2021/22 FY 2022/23 FY 2023/24
Projected Request
# of Units:
Residential 16,446 16,556 16,666 16,886 17,186 17,470 17,690
NEW:projected Residential 220 220 220 300 284 220 -
Commercial 6,229 6,229 6,229 6,229 6,229 6,229 6,229
NEW:projected Commercial - - - - - - -
Metro Water - Residential 1,353 1,353 1,353 1,353 1,353 1,353 1,353
Metro Water - Commercial 1,662 1,662 1,662 1,662 1,662 1,662 1,662
Total Units:25,910 26,020 26,130 26,430 26,714 26,934 26,934
Carry forward Fund Balance 603,121$ 523,303$ 583,704$ 621,540$ 638,077$ 695,275$ 700,733$
Includes vehicle cash reserve
Revenue:
Monthly Stormwater Utility Fee/Unit 4.50$ 4.50$ 4.50$ 4.50$ 4.50$ 4.50$ 4.50$
Gross Revenues 1,394,180$ 1,405,500$ 1,411,500$ 1,427,500$ 1,443,000$ 1,454,500$ 1,454,500$
Funding from Outside Sources - 2,000,000 - - - - -
Late Fees 1,340 1,500 1,500 1,500 1,500 1,500 1,500
Interest 2,711 2,000 2,000 2,000 2,000 2,000 2,000
1,398,231$ 3,409,000$ 1,415,000$ 1,431,000$ 1,446,500$ 1,458,000$ 1,458,000$
Expenses:
Personnel
Total Personnel:670,099$ 768,987$ 795,902$ 823,758$ 852,590$ 882,430$ 913,315$
Contracts/Services
Outside Professional Services*263,276 199,712 199,712 199,712 199,712 199,712 199,712
Vehicle Repair & Maintenance 5,381 a 7,200 7,400 7,600 7,800 8,000 8,200
Equipment Repair & Maintenance 41,705 a 42,100 43,000 43,900 44,800 45,700 46,700
Rentals 50 a 1,000 1,100 1,200 1,300 1,400 1,500
Telecommunications 4,384 a - - - - - -
Postage 162 a 250 300 400 500 600 700
Printing & Binding 1,500 a 1,500 1,600 1,700 1,800 1,900 2,000
Travel & Training 4,047 a 11,450 11,450 11,450 11,700 12,000 12,300
Membership 7,000 a 2,500 2,600 2,700 2,800 2,900 3,000
Office Supplies 3,500 a 5,000 5,100 5,300 5,500 5,700 5,900
Gasoline 16,883 a 14,300 14,600 14,900 15,200 15,600 16,000
Uniforms*1,189 a 1,600 1,700 1,800 1,900 2,000 2,100
Bad Debt Expense 2,500 a 2,500 2,600 2,700 2,800 2,900 3,000
Field Supplies 17,435 a 30,000 30,000 30,000 30,600 31,300 32,000
Regulatory 5,000 5,000 5,000 5,000 5,000 5,000
Safety 3,541 a 1,000 1,100 1,200 1,300 1,400 1,500
SW Maintenance 58,579 - - - - - -
Depreciation 155,000 160,000 164,000 169,000 174,000 179,000 184,000
Total Operations/Maintenance:586,132$ 485,112$ 491,262$ 498,562$ 506,712$ 515,112$ 523,612$
Capital Outlay/Projects
Minor Assets 3,000 4,500 4,000 4,000 4,000 4,000 4,000
New Vehicles 40,158 - - - - - -
Building & Improvements 20,251 - - - - - -
Townwide Drainage Projects 108,103 2,250,000 250,000 200,000 200,000 200,000 200,000
Equipment 35,000 - - 85,000 - 30,000 -
Total Capital Outlay 206,512$ 2,254,500$ 254,000$ 289,000$ 204,000$ 234,000$ 204,000$
Total Expenses:1,462,743$ 3,508,599$ 1,541,164$ 1,583,464$ 1,563,302$ 1,631,542$ 1,640,927$
Surplus /(Deficit)(64,512) (99,599) (126,164) (152,464) (116,802) (173,542) (182,927)
Total Cash Balance 693,609$ 583,704$ 621,540$ 638,077$ 695,275$ 700,733$ 701,806$
Vehicle Cash Reserve 170,306$ 215,073$ 262,073$ 309,073$ 356,073$ 403,073$ 450,073$
Cash Balance 523,303$ 368,631$ 359,467$ 329,004$ 339,202$ 297,660$ 251,733$
Out of Vehicle Reserve 37.5%26.2%25.5%23.0%23.5%20.5%17.3%
Vehicles - - - - -
Equipment - - - - 280,000
Assumes Growth in Benefits & Wages 3.5%b 3.5%
Increase in internal drainage projects remain the same
Notes:
>discontinue to charge out operations support to Hwy Fund per current method
>
Draft Projected
ending revenue amounts are estimates subject to further revisions, and may not tie to cash balance in fund due to timing of revenues and expenditures