HomeMy WebLinkAbout20011908.tiff `ejc. u/ u /O
-,\4Aatej rot
4/A rPtd.
St. Vrain ,-.,1.0
SANITATION \;,n VYW21"() 410
DISTRICT
March 27, 2001
TO: Weld County, Planning Department
Town of Frederick
Town of Firestone
City of Dacono
City of Longmont, Planning Department
RE: Modification to St. Vrain Sanitation District Service Plan
This District's Service Plan was originally approved by Weld County in
1986. At that time, the District was located 100% within unincorporated
Weld County. Since then neighboring municipalities have annexed into or
extended the area in which the District serves. In conjunction with the
ongoing, expansion of District's wastewater treatment plant, Weld County
has requested that the District submit the enclosed Modification to its
approved Service Plan. Inasmuch as portions of the District's service
area overlaps your jurisdictions, you are hereby requested to approve
this Modification pursuant to Article 32-1-201 , Colorado Revised Statutes.
Any questions you have may be addressed to District's attorney, Richard
N. Lyons (Bernard, Lyons, Gaddis & Kahn) 303-776-9900, Lee Lawson
(District Consultant), or me.
Vyarke,//it
ery truly yours,
Peterson
2001-1908
•
IXHISIT
436 Coffman Street Suites 203&204 P.O. Box 908 Longmont,CO 80502-0908
Phone:(303)776-9570 Fax:(303)774-2349 Email: mark@stsan.com
MODIFICATION
St. Vrain Sanitation District
SERVICE PLAN
Pursuant to Article 32-1-207, Colorado Revised Statutes, this Service
Plan modification addresses:
a.) Amendments to Original Service Plan,
b.) Wastewater Treatment Plant Capacity,
c.) Expanded Service Area, and
d.) Storm and Surface Drainage.
a. Amendments to Original Service Plan
In 1985, Weld County requested and St. Vrain Sanitation District
provided amendments to its original service plan as part of the approval
process. These required the submittal of specific items of information
prior to filing a site application and future actions by the District. The
intent was to provide the Planning Commission and Board of County
Commissioners the opportunity to review the adequacy of this
information. These are requirements were:
1 . Provide sufficient transportation data and analysis on Weld County
Roads and State Highways in order to identify potential demands
on the transportation system. --- This was accomplished prior to
filing the original site application.
2. Provide information and long range plans to determine any
necessary requirements to make District's facilities compatible with
the City of Longmont's wastewater transmission facility. District's
facilities shall be consistent with the expansion of future municipal
wastewater treatment facilities. --- District's wastewater collection
system has been constructed to the same engineering standards as
all cities in Colorado. Over the years the City of Longmont has
undertaken two wastewater treatment master plans prepared by
consultants. On the first instance a number of future sites were
analyzed for future relocation of the Longmont Wastewater
Treatment Plant. Included was the District's plant site two and
one-half miles east of 1-25. This alternative, with its attendant
miles of large interceptor sewer line, was discarded. The District
1
cooperated fully in this analysis. In the second instance, the City
of Longmont's wastewater treatment master plan analyzed six
• treatment alternatives, none of which involved the District's
wastewater treatment plant site, and concluded that its existing
plant should be expanded from 12 mgd (million gallons per day) to
22 mgd. This plan offers no opportunity for wastewater treatment
plant site consolidation. In this context it should be noted that for
years the District included in its Areawide Water Quality
Management Plan narrative a provision for a future wastewater
treatment authority at its treatment plant site should upstream
discharges elect this alternative. The District believes it has
complied with the spirit and intent of this amendment.
3. Provide annual financial and population report to Weld County
Planning Commission and Board of County Commissioners. --- This
is being done.
4. Appear before the Weld County Planning Commission and Board of
County Commissioners to discuss impacts on county roads and
police services when the population equivalent growth projection of
the District reaches 5,000. --- The original Service Plan presented
1985 equivalent population base of 1 ,774. The entire area served
was in unincorporated Weld County. Since that time Frederick,
Firestone, Dacono and Longmont have annexed into the area
served by St. Vrain Sanitation District and have assumed
responsibility for road and police services within their respective
areas. As explained in greater detail in part b. of this Modification,
this has resulted in Weld County equivalent population of 3,072
upon build-out of 251 single-family units under construction on
December 31 , 2000. It is anticipated that these will continue to
annex into the remaining Weld County area and thereby reduce its
road and police service responsibilities. In this sense, the notion
of perhaps creating a new governmental entity or responsibility to
discharge these responsibilities has been overtaken by events.
Therefore, the District proposes that this requirement be
eliminated.
5. Ensure that all waste(water) generated within the District be within
the limits established by the St. Vrain District Board and be
compatible with its treatment system capability. The pretreatment
2
plan for accepting industrial waste shall be submitted as part of the
site application. --- The latter (submittal of pretreatment plant as
part of the site application) has been accomplished. This issue is
an important element of the Colorado Department of Health and
Environment Discharge Permit. Over time, the testing, reporting
and pretreatment requirements have become more stringent. The
District is both in compliance and in a continuing effort to improve
its program pursuant to ever changing State and Federal
requirements.
b. Proposed Increase of Wastewater Treatment Plant Capacity
Treatment Plant
The Service Plan as originally approved described an aeration
lagoon treatment system with an initial capacity of 0.5-mgd (500,000-
gpd), which represents a population equivalent to 5,000 permanent
residents, with future phases to increase capacity to 1 .5-mgd for a
population equivalent of 15,000.
Growth during calendar year 2000 triggered a Colorado Department
of Health and Environment, Discharge Permit requirement that planning
(i.e. engineering, including preparation of plans and specifications) for
plant expansion commence when 80% of plant capacity is reached and
construction be initiated when 95% plant capacity is utilized.
District Population Equivalent (P.E.) as of December 31 , 2000 is
estimated to be 5,699, based on the sale of 2,847 single family
equivalent (SFE) taps less 251 SFE which are for on going construction
and 485 SFE which were pre-purchased by Sun Communities
manufactured home development in Firestone. SFE not only measures
the average wastewater load of a household, but also converts
commercial and industrial wastewater load into household equivalents.
Population Equivalent (P.E.) is then derived from 1 SFE equating to 2.7
persons. This represents the following equivalent population upon
completion of on going construdtion:
3
Weld County 3,072
Longmont 59
Firestone 1 ,593
Frederick 1 ,644
Dacono 9
Total 6,377
December 31 , 2000 P.E. represents 569,900 gpd of wastewater.
Taps sold equates to 637,700 gpd. For purpose of wastewater treatment
requirement projection, end of year P.E. based wastewater load will be
used. Based on known and projected future development, a range of
treatment capacity (in gpd) required by year follows:
Year Actual Low Hiqh
1999 334,400
2000 569,900
2001 764,300 1 ,055,900
2002 958,700 1 ,541 ,900
2003 1 ,153,100 2,027,900
2004 1 ,347,500 2,513,900
2005 1 ,541,900 2,999,900
2006 a 1 ,736,300 3,485,900
2007 1 ,930,700 3,971 ,900
2008 2,125,100 4,457,900
2009 2,319,500 4,943,900
2010 2,513,900
2011 2,708,300
2012 2,902,700
Underlined numbers indicate year in which 95% of treatment plant
capacity requires commencement of construction for increased capacity.
It should be noted that increased capacity beyond 1 .5-mgd will be
required as early as 2002, but could be as late as 2005. Similarly,
construction to increase capacity beyond 3.0-mgd could be required as
4
early as 2005 and as late as 2012. This growth results from the land use
decisions of Weld County, Firestone, Frederick, Dacono, Erie and Mead,
as tempered by the general economy. It is beyond the control of this
District. The District must simply plan and be prepared for an entire
range of development activity.
This District's initiated wastewater treatment engineering studies in
1999, and developed a long-range wastewater treatment plant process
and construction master plan. Rather than expand the aeration lagoon
treatment system from 0.5-mgd to1.5-mgd through construction of two
large, additional lagoons (would consume most of the remaining original
25-acre plant site, thus making future transition to a mechanical system
extremely difficult and expensive), it was concluded that the District
should immediately transition to a mechanical plant. This conclusion is
reinforced by the rate at which growth is occurring, as demonstrated in
the preceding paragraph.
The process and construction master plan calls for a series of three
1 .5-mgd extended aeration modules each comprised of a 2,250,000-
gallon earthen aeration basin and a clarifier. These are supported by
operations/mechanical equipment a laboratory building, an ultra violet
dis-infection facility, a biosolids handling area, and administrative space.
This plan will provide 1.5-mgd, 3.0-mgd, and 4.5-mgd treatment capacity
in phases. The existing 0.5-mgd, lagoon system remains in operation
during the construction of the first module and is then reworked to
provide a future site for the third extended aeration basin and clarifier as
well as additional biosolids handling area. Fully treated effluent
continues to utilize Oxbow Lake for dilution and further polishing before it
reaches St. Vrain Creek.
Figure 3-1 shows the existing 0.5-mgd aerated lagoon treatment
plant. Figure 3-2 shows where the first extended aeration module is
constructed while keeping the existing aerated lagoon system in
operation, and where the second extended aeration module is then
constructed while existing ponds 1 and 6 are converted to biosolids
storage. Also shown are the ultra violet system and the new headworks
and control building. Figure 3-3 shows the location of a third (future)
5
� / -
• -
I
(V.-. /
1•r '
I. r I
I I
/./ -----------1 >1.) I
� t 1 f
Oxbow -��,
Lake .,>X:7*
'
. / /
_ _
Pond t
#5 I
(Chlorine) s <' I
Disinfection I Pond T 1
e
I _ } t
I jt , IPond
' Pond #2
> #1 i t -
k
I , I
` 1 - ---- _ .)J - I
1
Existing Influent
Pump Station .
Figure 3-1 Q. 5 MGD Capacity Rothberg, Thmburini & Winsor, Inc.
,
7
i
A
L
ST VRAIN SANITATION DISTRICT
TITLE 32 SERVICE AREA
: i_
. II I
__
SI
liw.� { ¢qi r
^..m- ‘—r-'
Pn 'ia6'�� ,/,,.PMda.( A'F
till' r x
66
.i
al 1aim I
41it'll 3
Mt
Iy3,cr ,a,,,,,S�°rJ yy 1P Ip"+i, , g®,al '�1IJII J ®I s
4r 9 :4 N rp I, 141, x7 thi I. . Rl 1119@�
f u J- ffigtia IR iF m' I �� 1N � ur F
MI fi '�i d�dt, r"' +rr ir�z 11p1pFppl
4i 'N Fr �"F 6 n�a 191i�P
Nair ik its�7 -�k IE r I I�l p .
'In. ,�# , I , iII L1 a
�J a 'L ill IIII
�_ ,�LE.� �_ saw
- rlgte+$a: :at;
eAPh� o0ll[I lR f 1 I
®®�' 31 32 I� .110111i, nS, 'I. f
', a ® '
I A
" i \111111 !y
CiI® 1.
�,i
MN,' . E
1' �Nil 9999
I.
o j
lIP! '
SIAM - ®® N
' -
irj Deleted service areas.shp
_`r -, Added service areas.shp
DTA SVSD Bndry.shp
Title 32 Service Area.shp
//77/ . . .- 1I
I
/ 1 �_ . • - � "
- I I
I
•
•
Oxbow
Lake • <
r
. I .
I
, I I
7� Pond
Expanded • #5 RAS�fWPS .
Chlorine r '
Offline Station i
v 1 _ _ 1
Disinfection Clarifier Clarlrier
ri Haw + Biosolids l A #1 New 60' 0 ''z
Storage
Syslem I Clarifiers l
- -
�' Aeration I Aeration
Basin Basin I
7 Now p Pond #1 #2 I
I Heedwoikef Biosolids #2
• ›Admini6lralion/ Storage Offline
ConUol Bld
4
I A
'-Reuse-PP 9 i in from -/..) — I . ,-------- ---- - - -- - - --- - - - -------- --------- --- — -- - --- - — - -- ------ — — - - — — — - --- -- -
Figure
•
3-2 1.5 MGD Capacity Rothberg, Tamburini & Winsor, Inc.
i (3.0 MGD)
R ,
8
•
I
...• .
-
O.r6ow • 1
Lake -
.
/ Ponds #2,5 removed, new earthen
. lagoon #3 added with clarifier, RAS/WAS
•• • — — — • pumps and improved biosolids handling
i. .
RAS/WAi
Pump
/ Station I
I / CIMUer Clanfler Clarinet 1.
UV M9 / MI \X2
. System J
/ nA n
j, /
Biosolids New 1.5MGD 1.5MGD 3 Treatment
I Handling 1.5MGD trains @
I New
Aeration Aeration Aeration
1.5
Headwork'',
MDG ea.
Administratio i Basin Basin' Basin
?' Control Bid #3 #1 #2 I
I !
A A n
1 — I
o
t Figure 3-3 4.5 MGD Capacity Rothberb, Tamburini & Winsor, Inc.
5.
i
A
6
extended aeration module providing 4.5-mgd plant capacity and expanded
biosolids handling area.
When 80% of the 4.5-mgd plant is utilized, the District will
commence preparation of plans and specifications to convert one of the
1.5-mgd extended aeration treatment modules to a 5.4mgd conventional
aeration activated sludge system. This will require additional clarifiers
and mechanical equipment. The remaining extended aeration modules
will be similarly converted as required. Through this evolution the
Districts Wastewater Treatment Master Plan can address up to 16.2-mgd
capacity.
As a result of population projections set forth above, wherein a
second 1 .5-mgd extended aeration module may be required as early as
2002 (but no later then 2005), construction efficiencies (in heavy earth
moving and concrete work), and a very favorable bid alternate (work
estimated to cost $956,000 bid for $200,000), District awarded a
construction contract for both the first and second extended aeration
treatment modules. This provides treatment capacity for 3.0-mgd. The
District awaits approval of this Service Plan modification to activate
capacity in excess of the 1 .5-mgd described in its original Service Plan.
Land
In 1998 District purchased an additional 20 acres directly north of
and contiguous to its original plant site. This provides a total of 45
acres. This additional land includes a large stockpile of gravel and
overburden for future over site grading to bring a portion of this new area
out of the flood plain. In addition the District acquired easements to
provide buffer in all directions that could be developed. Properties in the
remaining directions are comprised of completed gravel pits.
b. Expanded Service Area
District Service Areas
There are two separate service areas that apply to sanitation
districts. They are described in the next two paragraphs.
6
Title-32, Colorado Revised Statutes, the enabling legislation for
Special Districts, in subsection 32-1-1-7, defines its service area. It may
be entirely within or entirely without or partly within and partly without,
one or more municipalities or counties. It may consist of noncontiguous
properties. Only one special district can provide its service (wastewater
in this instance) within an area, with an exception for metropolitan
districts. This exception requires a number of conditions. Nothing in this
subsection encourages unnecessary proliferation, duplication,
overlapping or fragmentation of special districts. Subsection 32-1-202
(Filing of service plan required-report of filing-contents-fees) requires:
"(d) A map of the proposed special district boundaries and an estimate of
the population and valuation for assessment of the proposed special
district."
Section 208, Federal Water Pollution Control Act (33 USCS §.
1288), frequently referred to as The Clean Water Act, requires states to
develop and the Administrator, Environmental Protection Agency to
approve a "continuing planning process." This process includes many
things (i.e. effluent limitations; regulation of location, modification and
construction of treatment works; pre-treatment; identification of agencies
to perform duties; Agency to require intergovernmental cooperation;
regulation of residual waste from water treatment; inventory and ranking
of needs.) It also includes the development and maintenance of an Area
wide Wastewater Management Plan. This Plan assigns service areas to
municipalities and sanitation districts that operate within the state. Its
goal is to provide a rational mosaic of wastewater treatment agencies to
discharge state responsibilities for wastewater treatment so as to reduce
pollution, maintain water quality in State water, avoid duplication of effort-
and promote overall efficiency. Section 208-Service Areas generally
correspond with drainage basins. It describes the treatment works of
these agencies, their present loading, any environmental problems, and
projects when capacity increase will be required.
North Front Range Water Quality Planning Association (NFRWQPA)
prepares and maintains the Area wide Water Quality Management Plan
for Larimer and Weld counties, and recommends its adoption by the
Colorado Water Quality Control Commission in behalf of the State.
7
NFRWQPA also coordinates the site approval process (an element of the
continuing planning process) for treatment plant location construction and
modification, lift stations and interceptor sewer lines and makes
recommendations to the Water Quality Control Division of the Colorado
Department of Health and Environment.
Proposed Title-32 Service Area Modification
The proposed Title-32 Service Area for St. Vrain Sanitation District
is primarily based on the natural drainage basin(s) up-gradient from its
treatment plant located on St. Vrain Creek 2-1/2 miles east of Interstate
25. However, this is limited to areas not otherwise served, or to be
served, by other wastewater treatment agencies. The District has been
extremely careful to avoid overlap of territory. Whenever this issue has
been in question, the District consults with the neighboring agency to
arrive at a mutually agreeable arrangement.
The District's Title-32-Service Area (as is the section 208-Service
Area) is based on the avoidance of the lift stations, except where
required for river crossings and treatment plant operations.
As shown on the attached map, the District's proposed Title-32-
service area is bounded on the north by area served by the Town of
Mead. A portion of this boundary east of Interstate 25, extending one
and one-half miles is a ridgeline defining gravity flow. The area beyond
this District's boundary to the northeast is not capable of being served by
gravity by any nearby agency. To the east the District is bounded by
Weld County Tri-Area Sanitation District, serving the east portion of the
Towns of Firestone and Frederick. To the southeast the area is bounded
by Dacono Sanitation District south of Colorado Highway 52 up to Weld
County Road 8 east of Interstate 25. The boundary west of Interstate 25
is one-quarter mile south of Weld County Road 8 for one mile. The Town
of Erie serves the area to the west to a line one and one-half miles north
of Colorado Highway 52 that extends to Weld-Boulder County Road. This
southern portion of St. Vrain Sanitation District's proposed service area
all drains by gravity via the Godding Hollow drainage. The west boundary
is, for the most part, Weld-Boulder County Road. One indentation to the
east along Colorado Highway 119 is served by Longmont. The territory
8
west of Weld-Boulder County Road is either served by Longmont or not
served.
Specifically, this revision to the St. Vrain Sanitation District Title-
32 Service Area:
Deletes approximately 1020 acres north of Colorado Highway 66 on
both sides of Interstate 25, specifically: 40 acres in Section 21 , 480 acres
in Section 22, 320 acres in Section 23, and 180 acres in Section 24,
Township 3 North, Range 67 West of the 6'h Prime Meridian. (These
deleted areas are outside the District's drainage basin or are within the
Mead 208-Service Area.)
Deletes approximately 160 acres (southwest quarter) section 6 and
400 acres (north half and east half of southeast quarter), section 7, 80
acres (west half of southwest quarter section 6, Township 2 North, Range
67 west of the 6'h Prime Meridian (The area is being served by the City of
Longmont.)
Adds approximately 1360 areas east of Weld County Road 11 , and
north of Colorado Highway 52, specifically: 480-acres in Section 18,
Township 2 North, Range 68 West, 80 acres in Section 13, 220 acres in
Section 24, 320 acres in Section 25, and 360 acres in Section 36,
Township 2 North, Range 67 West of the 6th Prime Meridian. (This is in
agreement with the section 208 Areawide Water Quality Plan. Territory to
the west is served by St. Vrain Sanitation District and to the east by Weld
County Tri-Area Sanitation District.)
Adds approximately 4780 acres south of Colorado Highway 52 on
both sides of Interstate 25, specifically: 560 acres in Section 1 , 640
acres in Section 2, 640 acres in Section 3, 460 acres in Section 10, 640
acres in Section 11 , 360 in Section 12, 100 acres in Section 13, 540
Acres in Section 14, 640 acres in Section 15, 40 acres in Section 16, 20
acres in Section 21 , and 80 acres in Section 22, Township 1 North,
Range 67 West of the 6`h Prime Meridian. (Territory to the West is served
by the Town of Erie, to the South the City of Northglenn, and to the East
9
by the Dacono Sanitation District. Portions of Sections 2 and 3 have
been developed and are served by the District.)
Population Estimate
District Population Equivalent (P.E.) was estimated at 1 ,774 in
1985 based on the number of single tap equivalents (SFE) to serve
development within the original District as defined in its July, 1985
Service Plan.
This calculation is based on 1SFE representing 2.7 persons. This is the
average occupancy of a single household. P.E. and size of District, have
increased through new construction and inclusions as follows:
Year (end) Population
1985 1 ,774
1999 3,344
2000 5,699
This represents a 6.3% annual increase over its first 14 years and
70.4% increase during calendar year 2000.
The overall average annual increase since District inception is 14.75%.
Based on District's current year budget, population increase for 2001 is
estimated at 1944 (34.1 %). The following four years are estimate at
14.75% and then 6.3%. This results in:
Year(end) Population
2001 7,643
2002 8,770
2003 10,063
2004 11 ,548
2005 13,252
2006 14,087
2007 14,974
2008 15,917
2009 16,920
2010 17,986
10
Firestone, Frederick, Dacono, and Erie are growing rapidly. These
estimates may well turn out to be low.
Valuation Estimate
The history of District Assessed Valuation follows:
Year(end) Assessed Valuation
1986 $1 ,325,190
1987 $3,314,290
1988 $3,462,160
1989 $4,359,140
1990 $4,496,950
1991 $5,561 ,670
1992 $5,355,020
1993 $5,667,640
1994 $7,219,310
1995 $10,043,250
1996 $11 ,286,022
1997 $13,543,100
1998 $23,338,380
1999 $32,881 ,460
2000 $54,704,740
This represents a 30% per year increase over the past ten years,
39% per year increase over the past seven years, and a 60% increase
over the past three years. It also reflects gains of $9,795,280,
$9,543,080, and $11 ,823,280 over the past three years. Based on
present level of development activity and known development plans for
the area, it is estimated that assessed valuation will increase
$10,380,000 per year, the average increase for the past three years,.for
the next four years. After that increase at 6.3%, the projected population
increase for these years. This results in the following:
Year Assessed Valuation
2001 $ 65,084,740
2002 $ 75,464,740
11
2003 $ 85,844,740
2004 $ 96,224,740
2005 $102,286,690
2006 $108,730,750
2007 $115,580,780
2008 $122,862,360
2009 $130,662,680
2010 $138,830,640
C. Storm and Surface Drainage
Agreement
The St. Vrain Sanitation District has agreed to participate in the creation
of a stormwater management agency to manage storm and surface
drainage and make its resources available to administer this program in
the areas shown on the attached map. The purpose is to assess and
mitigate the threat to life, property, and water quality presented by storm
and surface water run off through the cooperative effort of the many
interested entities and individuals that impact, or are impacted by, storm
and surface water drainage.
Objectives
The objectives of this cooperative effort are:
• The creation and maintenance of a forum for entities and
individuals with an interest in stormwater management in the
Godding Hollow, the Idaho Creek basin, the Hamlin Draw, St. Vrain
Creek and the Boulder Creek within the boundary of the proposed
stormwater management agency service area.
• The assessment of flood hazard risks within the agency boundary.
• The funding and construction of facilities to mitigate the risks to
life, property, and water quality presented by stormwater runoff.
• The maintenance and operation of said facilities.
12
Service Area
The agency shall perform the stormwater management responsibilities
within its service area. This involves planning and administration, as well
as construction and maintenance of community drainage facilities, for the
following drainage basins:
• Godding Hollow Drainage Basin - Mostly east of and parallel to I-25
on the south side of St. Vrain Creek. (This area along with the No-
Name Creek drainage was the subject of a recent stormwater drainage
master plan.)
• Idaho Creek, St. Vrain Creek and Boulder Creek Drainage Basin —
West of 1-25, south of St. Vrain Creek, and east of County Line Road.
• North Drainage Basin — area of St. Vrain Sanitation District north of
St. Vrain Creek and includes Hamlin Draw.
The attached map shows these stormwater drainage basins that flow to
St. Vrain Creek.
Services and Functions
The following services and functions with respect to the area it serves,
are proposed for this stormwater management agency:
• Acquire, construct, own, reconstruct, improve, rehabilitate,
repair, operate, and maintain, by way of illustration and not by
limitation, such facilities and systems deemed necessary to
provide stormwater hazard mitigation and surface drainage
control to the areas which it serves, together with any and all
appurtenances thereto or interests therein.
• Review plans and other documents of developments occurring
within its jurisdiction and advise the appropriate land use
planning agency to whether or not they comply with the
recommendations contained in the various drainage basin
studies and the standards of the Agency.
13
• Provide such other services or functions as may be authorized
by law and determined by the St. Vrain Stormwater Management
Agency Board of Directors to be in the best interests of the area
and the participating governmental agencies.
operating Principles
In order to provide the services and functions described above, this
District recommends that the stormwater management agency be guided
by the following operating principles:
a. Develop storm and surface water drainage plans for
each basin.
b. Adopt storm and surface water drainage development
and construction standards.
c. Maintain the sound financial health of the Agency
d. Establish a Stormwater Facilities Construction Plan
schedule with due consideration for the recurrence
interval of various flood hazards.
e. Establish a Stormwater Facilities Construction Plan
that provides for the control and containment of
stormwater outfall from newly constructed structures
and development.
f. Minimize the cost of maintenance of stormwater
drainage facilities.
g. Use natural, historic drainageways.
h. Maximize economies of scale.
Wherever possible, build multi-use facilities.
j. Insure that affected entities, groups, and individuals
have a voice in the decision making process of the
Agency.
k. Allocate funding obligations fairly to all properties that
contribute stormwater drainage.
14
ST VRAIN SANITATION DISTRICT
STORM & SURFACE DRAINAGE AREAS
" I1 .1 r
N3 _
,2,,_-
I t
`Q TH 'C � 'ASE ' I,N ® ' ' a
� M
I® ®H n ,
fie +�A } ().
l" I r rar ; kr `it'7S mamtillh v I `��f d I� t o CS}Z p ✓,.
r �:,� '
I tm Ft 2 ley a7. �,,:--", :l.., ---',,,?. :::','.4.,;:.,13.,:t,:..A.10.,44.41.4*-- ,,....-.;i: tr''"i) - '._.-C, �'1 ler i it
r Fr?- + rax e �( / ,
! 97Sµ ,m 'u U.LAM
Y"-mir ill in /:
II A`9RS�(
i �x l r err s i I �._ r�
; -
� � ° a ai •fir
pit,,,,....„.„. 4wve.,:?4,,,:. „. rig, .., • ,_,.,.___,,
X!tLè
er
dw (S' � "�
C Idaho st vrain crk,bldr.shp
r1 Go ED
dding hollow basinshp
Idaho creek basinshp N
n Tri-town basinshp
�Creek
\. I
Ditch W kA E
S ,'misc
208 Boundry,shp
Coordinate road improvements to conform with the
applicable storm and surface water drainage matter
plans.
Approval Requirements
The basis of these changes to District's Title-32 Service Area,
pursuant to the criteria set forth in Section 32-1-203(2) CRS follows:
a. There is sufficient existing and projected need for
organized service in the amended service area to be
serviced by the District.
b. The existing service in the additional area to be served
by the District is, inadequate for projected needs.
c. The District is capable of providing economic and
sufficient service to the amended service area within
its proposed boundaries.
d. The District is capable of providing economic and
sufficient service to the amended service area within
its proposed boundaries.
e. The additional area to be included in the proposed
District service area has or will have the financial
ability to discharge the proposed indebtedness on a
reasonable basis.
f. Adequate service is not or will not be available to the
amended service area through the County, other
existing municipal or quasi-municipal "corporations,
including existing special districts, within a reasonable
time on a comparable basis.
g. The facility and service standards of the District are
compatible with that of the State and surrounding
municipalities.
h. The proposal is in substantial compliance with a
master plan adopted pursuant to Section 30-28-108,
C.R.S.
The proposal will comply with the 208 Areawide
Wastewater Management Plan.
15
j. The additional Service Area as proposed will be in the
best interests of the area to be served.
For these reasons, the District requests that the above modifications be
approved.
16
Hello