HomeMy WebLinkAboutWWP2700509(6) VP-27-0509 SSA HEI= SEWERS LID #335 - S'EPA 1+
BEGINNING OF
FILE
FILE TITLE
SlERR}L 11�iGHT�
� �WERS L1D *335
SEPA
VIC
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CITY OF RENTON DEVELOPMENT SERVICES nMSION
ROUTINE VEGETATION MANAGEMENT
- PERMIT
APPLICANT: City of Renton SanRary Sewer lriilrtv.
* MAILING ADDRESS: 200 Mill Avenue South Renton WA 98055
CITY FILE NUMBER: RVMP-178-92
PROJECT NAME: Sierra Heiahts sanitary sewer installatlo
TAX ACCOUNT NUMBER:
SITE ADDRESS(PROJECT LOCATION): 3490 NE 21st Street
SIZE OF WORK AREA/SITE: Total she' 9 1 W sauere feet Area d work 6000 square teat.
DESCRIPTION OF SPECIFIC WORK TO BE ACCOMPLISHED: G,earina of appr-wX1MW9IY 6 tXX1 square
teet of d and r r hind dackbetrvs and associated low branch removal to accomodate the installation o}
a tempomrv'job shack'traller for contractor use during constrLcton of the attgvg-referenced project--See
attached plan.— —
CONDITIONS OF PERMIT APPROVAL.
Applicant shall comply with all applicable sections of the City of Renton land Clearing and Tree
Cutting Ordinance. -
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Appropriate erosion control measures such as silt fences and hay bales will be provided for the
duration of the work.
PERMIT EXPIRATION: This permit Is good from the date of Issuance(noted below)for a period not to
exceed six(6)months. Any work preformed after that time will require a separate permit
APPLICANT'S CERTIFICATION AND ACKNOWLEDGEMENT OF PERMIT CONDITIONS: I hereby can
that no work is to be done except as des ribed above and that at work is to conform Io Renton Codes y-
and Ordinance
Applicant /bi 4_/- c Date / /4
- CITY APPROVAL; This permit hereby granted subject to compliance with the Ordinances of the City
of Renton,the Information filed herewith,and the conditions of approval noted above—Development
Services Divslon Manager.
BY .. _ - nate
c. RVMP
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26 d 1 _✓ErM 6 Sharp
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•3 , R , DEC 15 %92
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Neattle-KIng County Dep�eul of Public I,r djh
SIERRA HEIGHTS SANITARY SUkVEY PROJECT
SEdTTLE-KING COUNTY DEPARTMENT OF PUBLIC HEALTH
ENVIRONMENTAL HEALTH DIVISION
JUNE, 1991
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TABLE OF CONTENTS
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` EXECUTIVE SUMMARY l
f; INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
King County Sanitary Survey Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
L The Sierra Heights Sanitary Survey . . . . . . . . . . . . . . . . . . . . . . . . . .
Previous Investigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
t METHODS AND MATERIALS OF STUDY
'. Methodol . . . . 3
.e, Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Surface Water Sampling Program i •
' DATA ANALYSIS AND REVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
.. Climatological Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
1 Genera 1^formation 5
wnership Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vs . Haze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
I' ON-SITE SEWAGE DISPOSAL SYSTEM DATA . . . . . . . . . . . . . . . . . . . . . . . 5
Septic System Specification Data
Age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Tank Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Drainfreid Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
-eptic System Maintenance and Recordkeeping . . . . . . . . . . . . . . . . . 6
Reserve Area Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Septic System Performance Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Significant Operation: Limitations . . . . . . . . . . . . . . . . . . . . . . . . . 7
g
Failures g
Surface Water Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
t
CIVIC AND CORRECTIVE ACTIONS IMPLEMENTED BY THE HEALTH
DEPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 P
Civic Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Corrective Actions . . . . . . . . . . 10
RESULTS AND RECOMMENDATIONS 10
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SIERRA HEIGHTS SANITARY SURVEY
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EXECUTIVE SUMMARY
A sanitary survey was undertaken to evaluate the functioning of septic SVStCMS in the
Sierra Heights neighborhood located in northeast Renton. One hundred and eighty one sites
were evaluated, one hundred and eighty of those being served by an on-site sewage disposal
system. The survey area was divided into two general regions, one being located in
unincorporated King County, the other located within the Remon City Limits. The sites
were evaluated for malfunctioning septic systems, potential for malfunction, and limiting
conditions to proper operation of septic systems. Residents were interviewed in order to
gather information regarding the maintenance and repair of the systems and the amount of
wastewater generated in the residence. Dye tests were conducted, if warran the status of the system. ted, to determine
The operational status of the systems were determined subs,3quent to 'he E-tr'
inspection and interview. systems were classified into the following categ ries: (,)
(2)prefailure; (3)limiting conditions present; and (4)operating per code. The results of the
survey revealed dramatic differences in results between the city and the county areas. The
ail failure rate within the city limits was determined to be 39% of the total number of
residences. In contrast, the failure rate in the county was much lower at 3%. The survey
j showed the majority of failuics to be restricted to a specific geographical area which is
limited by poor soils, small lot sizes,
adjacent area. high water table, and surface water run-off from
i
It is the Seattle-King County De,artment of Public H:a1th's recommendation that the
I area located within the city of Renton be designated a severe public health hazard. The
i potential for disease transmission through raw sew
age 1! ground or into surface water exists in this area du to the high number of failing dis&arged to the iu systemoce s in
this area combined with the unsuitable conditions for the
sewage disposal system. proper functioning of an on-s;te
It is the Health Department's finding that the area located in unincorporated King
County is an Area of Health Concern. An area of health concert. exists when the systems
area not functioning optimally, and have the potential for becoming a public health harard.
The numerous limiting conditions in this area, including the age of the systems, marginal soil
conditions, and high winter water table, support this fording.
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F SIERRA HEIGHTS SANITARY SURVEY
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INTRODUCTION
E
King County Sanitary Survey Project
The Seattle-King County Department of Public Health has been conducting sanitary surveys
t to evaluate on-site sewage disposal systems in King County since 1987. The surveys inciude
door to door inspections and interviews of sites that are serviced by on-site sewage disposal
systems (OSSDS). In addition to gathering information, the surveys also function to increase
awareness of public health and environmental concerns through public education and decision
making processes. To date, over 1,000 systems in King County have been evaluated.
I�
The Sierra Heights Sanitary Survey
The sanitary survey of the Sierra Heights area was conducted from February through April,
1991. The study arm is located just north of Renton, and included a total of 181 sites. A
portior of the study area was annexed to the City of Renton in 1987, this portion includes
sixty-ore residences, and one church. The study area included six plats: Sierra Heights
Divisions l through 5; and Rose Haven. The study area also included eight residences nor
located in formal plats. The geograplucat parameters of the study area were as follows:
Northern Boundary: S.E. 100th Street
Southern Boundary: S.E. 106th Street ,'N.E. 19th St.)
Eastern Boundary: 132nd Avenue S.E. (Union Ave N.E.)
V 'stern Boundary: 125th Avenue S.E.
(See Figu:s I and 2).
Previous investigation. Portions of the study area have had P history of problems with
sewage disposal systems. Over the years, the Health Department has investigated numerous
complaints regarding illegal sewage disposal methods in Sierra Heights Division 2.
Unfortunately, for reasons which will be demonstrated by the results of this study, many of
the problems that existed in this area were not exposed upon investigation.
In 1976, an informal rmey was conducted of Sierra Heights Divisions t and 2.
Health Department records intain handwritten notes of the survey, but no written report
was prepared. However, as a result of the survey a letter was written to the City of Renton
recommending sanitary sewers be provided to the arm around S.E. 103rd and S.E. 104th
streets (now N.E. 21st and N.E. 22nd Streets, in the city limits). (See Appendix 1). At that
time, this area was not part of the City of Renton, but in unincorporated King County. it is
the City of Renton's policy that, in order to provide s, utary sewers s. m area, that th, ar-e
is required to be annexed to the city. There is no follow up to these recommendations in the
Health Department files, but according to the City of Renton, subsequent attempts at
annexation of this area did not succeed.
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SIERRA HEIGHTS SANITARY SURVEY
In 1986, another survey was conducted in this area. This survey was conducted by
student intems from the University of Washington Department of Fsvironmental Health.
The survey was conducted during the summer months, and consisted of visual inspections,
* personal interviews and dye tests. A total of 110 residences were included in the survey, but
no failures were detected through the dye tests. Those results were most likely due to the
fact that the survey took place during the dry season, and the fact that the student surveyors
�e. referred to ",ion-sewage" water being diverted from the septic systems. The most recent
survey shows that the "non-sewage" water referred to in the 1986 report was actually
wastewater from washing machines, which is considered "gray water' and subject to sewage
disposal regulations. A copy of the written report of that survey is located in Appendix 2.
The most ree;nt complaint regarding the area was a complaint of raw sewage being
discharged along N.E. 21st Street in 1990. A sanitarian from the Health Department
investigated this complaint, and conducted a dye test at the residence in question. Although
water that appeared to be sewage was being discharged onto the street from a french drain,
the dye test was negative. However, the dye was not placed into the washing machine, nor
were any other residences checked.
The present survey was conducted at the request of the City of Renton, and consisted
of an individual evaluation of each and every lot within the survey area.
METHODS AND MATERIALS OF STUDY
Methodology. The study began with an extensive file search. Health Department files are
on microfiche and are filed by individual street addresses. Each address on microfiche
contains a file giving the history of each septic system application, installation and as-built
i data, repair-, to the system, operational checks, building applications and complaints. Many
addresses are missing information for a variety of reasons: e.g., some information was
never provided to the Health Department, subsequent address changes were not conveyed to
the Health Department(or, if conveyed, records not annotated), or repairs that were r,ot
conducted under Health Department permit.
Plat information was also reviewed. The plat files for the Sierra Heights area
revealed some additional as-built drawings that were not tiled by address. The plat files also
icontained original designs for many systems and some subsequent remedial measures taken
for drain,,e problems in Sierra Heights Division 2. Storm drain maps provided by the City
of Renton were also utilized. These maps showed the layout of storm drain systems, the
location of catch basins and the ultimate outlets for storm drainage. The outlets are Ic:ated
at the south end of the study area on N.E. 19th Street and at the western boundary located at
various points at approximately 125th Ave. S.E. All of the outlets eventually flow into
Honey Creek, located west of the study area, which flows into lake Washington.
Prior to the field investigations, a letter was sent to residents in the study area
regarding the survey. The letter explained the nature of the study and the purposes for it,
and was signed by officials from the Health Department and the City of Renton. (See - '
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SIERRA IIEIGIITS SAAITARY SURVEY
r Appendix 3). In addition, in January, 1991, the City of Renton held a public meeting where
an official from the Health Department explained the upcoming survey.
The survey was conducted by unannounced visits to residences in the area. When
�. residents were not home, a note was left which explained the survey and requested residents
to call to make an appointment(Appendix 4). Many of the appointments took place on
Saturdays, at the convenience of the residents. During a visit, an interview was conducted to
e - gather information regarding the functioning of the septic system, present or previous
problems with the system, and the amount of water used in the residence. Questions were
asked regarding: septic tank pumping frequency; slow drains or backups(and if backups
were more apparent in wet season); previous repairs to the system; the number of residents
using the system; and whether the washing machine was hooked into the septic system.
The visits also included a visual inspection of the drainfield area, and a dye test if
warranted. During the inspection of the drainfield, the f^`lowing conditions were noted:
lush grass, wetland plants, standing water, surfacing sewa,c, evidence of high seasonal water
tables, structures built over drainfield, odors, locations of storm drains relative to the srpuc
system, and oti.er conditions which limit drainfield operations. (such as added fill, driving
over the dmalliield area, etc.). _
When warranted, dye tests were conducted by placing Fluorescein dye into fixtures
within the residence and then observing areas where the dye could possibly surface. Dye .*
tests were conducted where residences were rumored to be connected to storm drain, or ..�,..A.:;..�
when there was evidence of possible sewage surfacing in the area. Several dye tests were
conducted randomly throughout me area even if no obvious signs of potentai malfunctions
existed. In most cases, dye was placed into at least two fixtures in the residence, most often
in a toilet and the stand pipe drain from the washing machine. Observation for surfacing dye -
,...--,:_ woulu be in the drainfield area, in neighboring yards, and in nearby storm drains. Storm
drains were checked by locating catch b,sins and removing the cover to visually inspect for
dye. if visual inspection was not possible due to darkness or weak concentrations of dye, a
bottle was lowered into the catch basin to collect a sample. The sample was then observed
under black light to check for dye.
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Materials. Materials used in the field inspections included the as-built drawings of the
system, drawings of repairs to the system, storm drain maps, fluorescein dye and a black
light. When stmrures were observed in the drainfield area, a*paced" measurement was
made of the location and size of the structure, and later drawn onto the as-built drawing to
x'. scale to determine the extent of construction over the drainfield.
Surface Water Sampling Program. As a part of the survey, surface water samples were
taken in the area to determine the extent and nature of possible contamination from
discharges from malfunctioning septic systems. Two sampling rounds were conducted, one
in March during a period of wet weather and the other in April during a period of dry
weather. The sampling sites were selected by considering the following factors: potential
fecal contamination; accessibility; relative flow; and a need to determine background
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SIERRA HEIGHTS SANITARY SURVEY
conditions. Some sites that had been sampled in March were unable to be sampled in April
because they were dry. Also, some additional suspect sites were added in April after
investigation showed suspect discharges.
Samples were obtained as "grab" samples. In areas with ready accessibility sample
bottles were simply placed into the water and allowed to be filled by flow. Samples that
were taken from storm drains were obtained by removing a catch basin cover, taping the
sample bottle to a stick, and lowering it into the flow to obtain the samples. Samples were
transported to the lab within three hours after acquiring them. The water samples ware. ,
tested for a total fecal colifo,m content in excess of 200 organisms per one hundred
milliliters(>2G0/100mq.
DATA ANALYSIS AND REVIEW
Climatological Data. The survey was conducted during the months of February, March and
April, 1991. Evaluaung the septic systems during these months would give an indication of -
how the systems function under wet conditions. The rainfall data march and April
indicate that these months were water uhau usual, which could indicAx a 'wont case
scenario." However, the survey was conducted throughout these months notwithstanding the _
weather conditions. Therefore, some systems that were evaluated during periods of dry
weather might have been designated as functioning when they would fail under wet
conditions, and vice versa. It is the Health Department's position that a system where
sewage surfaces under unusually wet conditions is a failing system and constitutes a health
hazard.
General Information
Ownership Status. A high percentage of the homes were owr er occupied,The percentage
j of rental units was only slightly higher in the city (11%)than is the county (9%).
I See Table 1.
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Lot Size. Lot sizes varied tremendously through the study area. Two of the four lots that
were sized over one acre (43,560 square feet)accommodated two residences (accounting for
four of the six residences with lot sizes over 1 acre), the fifth was the church. The majority
of lots both in the city and the county were sized under IO,M square feet, lot sins that
would not accommodate septic systems, no matter what sail type, under current regulations.
Under today's regulations, when a new lot is created, the minimum lot size required for a _
septic system is 12,500 square feet. A total of 83% of the lots were found to be under this
minimum. See Table 2.
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( ) SIERRA IIEIGHTS SANITARY SURVEY
ON-SITE SEWAGE DISPOSAL SYSTFhf DATA Is
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- Septic System Specification Data
Age. Most of this area was platted in the late 1950's and early 1960's. A few homes were
built prior to development of the area, the oldest being built in 1904. Sierra Heights,
Division 1 was developed in 1957, followed sequentially by three other divisions of Sierra
Heights through 1958. (See Figure 2). In 1S68, plot plans were submitted for Sierra
Heights No.S, but this area has not been developed. The only other formal subdivision in
the survey area was Rose Haven, which is a small 5-lot plat developed in 1959. Most homes
surveyed were over thirty years old, but the ages of the septic systems varied, since some
had been completely replaced as repairs. Table 3 gives the age of septic systems.
Tank Size. Over the years, the sizing requirements for septic tanks serving a single family
residence have changed. The minimum required septic tank volume in the earlier plats was
750 gallons for a three bedroom residence. In 1972, the minimum was changed to 900
gallons, and again expanded to '000 gallon minimum in 1987 under Title 13 of the Code of
the Board of Health of King County. The size of the septic tank servicing the system was
determined by the as-built drawing, if no as-built drawing was available, the tank size is "
listed as 'unknown.' Because many of those systems with no as-built drawings were
installed during the early 1960's, it is probable that most were installed with 750 gallon
tanks. Table 4 shows the distribution of septic tank sizes in the city and the county.
Drainfleld Length. Drainfield lengths were ...:termined from the as-built drzwings. Systems
it had added drainfield as repairs wtrr, reported as total drainfield length. Some repairs
were done by installing extremely wide ucnches, up 1, four feet wide, that would, in a
sense, subsequently act as an subsurface bed. The Ic.g h of drainfield required is normally
calculated in terms of both soil type and potential usage (based upon the number of
bedrooms). Under present day regulations, lots with similar soil conditions would be
required to install drainficld lengths rangir.e from 281 feet to 375 feet for a 3-bedroom,
single family residence. Table 5 represents the drainfield lengths in the survey area.
_ Septic System Maintenance and Recordkeeping. Residents were asked the status of septic
tvtk maintenance, i.e. when the tank was last pumped and if and when there had been any
repairs to the dminfield. Since most residents were not the original owners, many did not
know if there had been previous repairs to the drainfield. Health Department records were
checked against reported repairs. A repair was noted when the owner knew that a repair
had been done, or when Health Department records showed a evidence of a previous repair.
One owner stated that he had repaired his drainfield four times, never having taken out a
permit. The majority of repairs involved addition of drain line to the drairfield, although
several consisted of a replacement of the entire drainfield. Two repairs in the city area
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consisted of adding drainlines that were four feet in width, constituting a `bed" type of
system which is sometimes used in poor soil conditions. Table 6 shows the repair status.
Table 7 shows the pumping status of the septic tanks. Residents were asked when the
last time the tank was pumped; the figures were not verified by receipt. "Never" was only
;. entered if the residents had owned the house since it was constructed and had never had the
tank pumped. If the owner had not had the tank pumped since purchasing the home from a
' previous owner, it was noted as "unknown,' consequently many "unknowns" may indicate an
extended period of time. Ruidents were informed of the Health Department's
_ recommendations on pumping tanks, and were instructed as to the preventative maintenance
aspect of pumping the tank. The majority of residences had the tank pumped within five
years.
Reserve Area Status. The reserve area is the amount of land available that can be used for
a repair or replacement of a drainfield. In this study, reserve areas were determined by
visual inspection and by examining the as-built drawing. Many properties were developed
when the regulations required 50% reserve area. This factor, coupled with the fact that
many original drainfields are undersized to meet today's standards, has resulted in
1 exceedingly inadequate reserve areas in a majority of cases. Another factor that has
j contributed to the inadequate reserve area is the fact that many lots have added outbuildings
or additions to the residence which have also reduced the space available for repairs.
Previous repairs also have limited cr completely eliminated the reserve area available.
l Where the property is listed as having no reserve area at all it was usually due to the fact
that the soil in any space available was so saturated that it would not accommodate a
drainfield. Table g gives the breakdown of reserve area available. Sierra Heig.rts Division 2
(the city portion) included many lots with no reserve area at all,because of extremrly
saturated soil conditions.
Septic System Performance Status
Significant Operational Limitations. A site is considered to have operational limitations if
conditions exist that will compromise the functioning of the drainfield in any way. Virtually
all the sites are in the survey area are limited simply because of the age of the system. A
site was also considered limited if any of the following conditions were noted: structures over
drainfields; seasonal high water tables; wetland plants; or backups- Structures or driveways
located over drainfield areas can result in damage to the drainlines, inaccessibility of the
septic tank for pumping purposes, reduction of evaporation-transpiration for the system, or
compaction of soil surrounding drainlines that would result in reduced absorption and
treatment of sewage.
Seasonal high water table was noted throughout the study area. The study was
conducW ring the wet weather season, and during times of heavy rains standing water or
soggy and wet ground were noted frequently. Vacant plots of land surrounding the study
area to the north, west and south, and vacant areas in easements also showed signs of high
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SIERRA HEIGHTS SANITARY SURVEY
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_ water table as evidenced by standing water and swampy areas. Health Department personnel
inspected two sites for building application purposes which had a water table at eighteen
inches. A third site inspected as a result of a complaint during the .,me period of th^ study
had a trrmch in the drainfield area which held water at twelve inches.
Wetland plants were noted if observed during the visual inspection of the drainfield
atca. These water seeking plants can indicate slow drainage aid/or high water table, even if
there are no other signs of high water table. Slow draining plumbing inside the residence
F can also be an indication of a high water table or an improperly functioning system. If the
s - drainfield area is saturated, the high water will limit the effluent discharging from the tank
and will result in a wastewater backup or slow draining into the tank. Residents were asked
whether this problem existed, or had existed in the past, anJ if the problem was more
" noticeable during times of heavy rainfall or the winter months. The number of limited
systems is shown in Table 9.
Pref tilures. A prefailure condition is one where the limiting conditions are more severe and
will most likely result in a failing system at some time in the future. Although not actively
discharging sewage to U.• surface of the ground, prefailure systems indicate that the sewage
is not being treated properly, and may actually be failing during times of high water table
and heavy rainfall.
l.
Conditions indicating a prefailing system include heavy lush grass growth over the
drainfield, or two or more of the following: hydrophilic plants growing in the drainfield
area, slowly draining plumbing fixtures, high seasonal water table, or significant construction
over the drainfield area. Lush grass growth over the drainfield area indicates retarded
drainage and 'over-fertilization' of the plants with sewage. This can indicate sewage rising
near the surface of the soil instead of percolating downward or laterally through the soil. As
noted previously, high water table conditions were noted throughout the survey area. This
factor, combined with lush growth of water-seeking plants also contributed to the numb, .,f
prefailure systems. The number of prefailing systems is noted in Table 9.
Failures. A failing system is one where the sewage is actually surfacing or is discharging
into a storm drain that will eventually discharge into surface water. Sewage includes all
wastewater from the house, i.e., both septic tank effluent and 'grey water.' A failing
system was determined by several methods including dye tests, admission by owners that
system was hooked to storm drain, or conditions that precluded proper drainfield functioning.
When visual inspection indicated that sewage may be seeping from the drainfield area,
a dye test was conducted to d^termine if wet or soggy areas were contaminated with sewage.
Most dye tests were conducted by placing fluorescein dye into at least two fixtures within the
residence, usually a toilet and a washing machine drain, if accessible. Dye tests were also
conducted if there was a suspicion that the system might be connected to a storm drain. In
those cases, in addition to checking the drainfield area for the presence of dye, storm drains
up to two blocks away were checked regularly.
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SIF-RRA HEIGHTS SANITARY SHR VEy
If the homeowner admitted that the washing machine or any other portion of the
septic system was hooked to a storm drain, or if visual inspection clearly showed the
presence of sewage, a dye test was not conducted, and a failure was noted. At two sits, the
drainfield was literally 'under water,' i.e., covered by standing water. This situation
Precludes the proper functioning of a drainfield, since the effluent from the septic tank cannot
properly discharge into soil and receive treatment. These situations were also noted as
Faihtres.
Table 9 shows the incidence of Failures in the study area. By and large, almost all of
the failures were confined to a specific area within the city. This area is characterized by
many conditions that are adverse to the proper functioning of a septic system. First, the
elevation of the area is significantly lower than those residences located in other areas, and
subsequently, this area receives surface and ground water runoff from the north and the west.
This runoff, combined with the high winter water table throughout the study area, further
aggravates conditions that are 'eleterious to the proper functioning of a septic system.
A second factor that precludes proper septic system functioning in this area is the soli conditions in this area. It has been noted that this area is lower in elevation, and the
contours of the land in this area indicate that there may have been extensive grading and
disturbance of the original soil. Conversations with residents in the area revealed that many
c=ribed the soil in their yards as being "hardpan," that it was impossible to dig in the yard
without a pack.
Finally,on one block in the Problc , area, there are a public storm drains in the
street. There is a private storm urain running along the back of the properties located in this
area, but over the years it has clogged and many owners installed french drains (a!so known
as interceptor drains) in an attempt to drain the properties. It was also verified that several
residences had some discharge of wastewater into this private storm drain, which would
aggravate the situation. There is also speculation as to underground springs in rhis area that
may contribute to the high water table problem.
t?'er half of the failures noted were discharges into storm drains in the area (14 of 25
failures). Because of the limited time!fines involved, and the close proximity of the
r-.sidences to another, it was beyond the scope of this study to determine exactly which
futures were hooked into the storm drains. Conversations with residents in the area
indicated that most had hooked only the drains from the washing machines into the storm
drains, in order to alleviate the amount of water discharging into the septic system, and to
Prevent backup,into the house. The storm drains in this area discharge to surface water on
iN.E. 19th Street, which eventually discharges into Honey Creek. Five failures were noted
where the washing machine directly discharged to the ground or into a receptacle other than
j 'he septic tank or the storm drain.
There were three failures that occurred outside of this area, Two occurred in
residences on a single lot, both discharging sewage onto the surface of the ground. A third
failure was detected through high bacterial counts in a storm drain, where the storm drain
was dry at one intersection, but contained running water less than one-half block away. In
this case, there was a washing machine in the lower level of a split level home, and its drain
9
r;
x
SIERRA IIEIGIUS SANITARY SURVEY
was piped into a sump, which was subsequently pumped up into the septic tank above.
Either the "sump' is leaking or there is a direct connection to the storm drain.
E
Surface Water Sampling
NiTwo rounds of surface water samples were taken during the study area. The
" ?mpling saes were selected by considerations of accessibility, potential wastewater
disenw6c, and the need for background samples (i.e. non contaminated water). Sampling
sites and results are listed in Table 10. Samples were tested for the presence of fecal
coliform in excess of 201)organisms per 100 milliliters. Fecal coliform is an indicator
organism that is used to detect the presence of bacteria from human and other warm-blooded
animal intestin:s. Although fecal coliform bacteria are not limited to human waste, it is a
good indication of sewage contamination.
The first round of samples were taken on March 5, 1991. Early that morning it had
snowed and during the time the samples were taken (from 8:30 am to 11 =a), the snow was
melting rapidly with water running into storm drains. Twelve samples were taken during the
first round from storm drains and surface water throughout the area. The highest level
detected was 7400 organisms per 100 milliliters. The second round included fifteen samples,
many from sites that had not been sampled during the first round. The weather had been dry
and warm for a+proximately one week prior to the second round of sampling. Two sites
located in swampy areas that had been sampled during the first round had subsequently been
filled and were unable to be sampled in the second round. Several of the storm drains
samplaC in the first round were dry at the time of the second sampling. Fecal colifurm
runts were found to be much higher during the sewed round of sampling (probably due to
the lack of dilution from precipitation), giving a good indication of sewage contamination in
thi storm drains (see Table 10).
The data gathered through the sampling program is limited by s^veral factors. The
y number of sampling sites and the trequency of sampling at those sites was extremely limited.
The indicator organism used in the analysis is not one that is limited to humans but is present
in all warts-blooded animals, therefore contamination could conceivable occur from dogs,
cats or wildlife. The surface water sampling portion of the study is meant to be used only as
a general indication of where sewage contamination may be present.
CIVIC AND CORRECTIVE ACTIONS ag-( IENTED By TH
HEALTH DEPARTMENT
t Civic Actions. prior to the onset of the study, the Health of
Renton sent out an informational letter regardng the study. During the course of thestudy,
educational pamphlets on 'How to Take Car=of Your Septic System' were distributed to
residents. The Health Department held a public meeting on May 28, 1991, giving the results
of the study to area residents. Residents and owners were notified of the meeting through a
10
I
S!FRRA NEIGMS SANITARY SURVh 1
mass mailing(See Appendix 5). Approximately 70 arez residents attended the meeting,
which was held al a local elementary school. The residence were receptive to the conclusions
and recommendations of the Health Department. Additiont.l information on water
conservation and septic tank maintenance has been distributed to interested area residents.
Results of the survey was reported in local newspapers, including the Valley Daily News and
The Seattle Times. Copies of this report will be made available to the public.
i.
l,. Conwtive Actions. The Health Department will be monitoring the corrective actions taken,
Y, both by the homeowners and the Ci!y of Renton. The area within the city is expected to be
served by saniary sewers by Fall of 1992. Corrective notices will be issued to any failing
systems that are expected to be serviced by sanitary sewers. Homeowners with failing
" systems that will be connected to public sewer will not be required to conduct expensive
repairs to the existing septic system, but will be given alternatives which minimize the
potential for surfacing sewage. Depending on the nature of the failing system, these
alternatives will include measures for water conservation; reconnecting grey water lines into
the septic system; using area laundromats for clothes washing; and temporary repairs.
RESULTS AND RECOMMENDATIONS
Although the survey demonstrates limiting factors to proper septic system operation
throughout the entire area, most of the failing systems were limited to a specific area within
titre city of Renton. The survey showed significant problems with septic system failures
locar�d within the area that had annexed to the city in 1987. Conversations with the
residents of this area indicated that the annexation had taken place in anticipation of being
served by public sewers provided by the city of Renton. All but three of the failures noted
occurred within the area annexed to the city (88%). One street in this area is also not served
by a public storm drain, and french drains and interceptor open from various properties onto
the street itself(no gutters, sidewalks, ditches of storm drains are present). This discharge
has been verified to contain wastewater from at least three homes, and perhaps traces of
contamination from others. Therefore, sewage is being directly discharged to the street,
resulting in what would be considered a potential public health ha ard.
Roper sewage disposal is vital because sewage can contain many disease causing
organisms. Untreated sewage can carry organisms responsible for su,;h diseases as cholera,
dysentery, hepatitis, and salmonella. Untreated sewage discharging into surface eater can
also cause other environmental hazards, such as raising the biological t ygen demand of a
stream, therefore injuring the habitat for aquatic animals.
The lots in the area in which the majority of failures have occurred are not conducive
to repair. As described above, the high water table, soil conditions, small lot sizes, and
limited reserve areas all preclude repairs that effectively eliminate future problems. Any
- repair done in this area would most likely be approved by the Health Department 'for
workmanship only,' meaning the Health Department acknowledges that the work is being
done in an attempt to cor-ect the situation, but the repair does not meet minimum Board of
ll
ti
SIERRA HEIGHTS SANITARY SURVEY
Health standards. In contrast, two of the three homes with failures in the unincorporated
areas have adequate reserve area, and the Chad may simply require re-plumbing of the lower
Icvel of the house.
It is the Health Department's opinion that the area that has been incorporated into the
City of Renton should be served with pubL: sewers as soon as possible to eliminate a
potential heald, hazard. Repairs of the existing septic systems in that area would be neither
cost effective nor would they eliminate the health hazard that exists. The Health Department
will recommend to the Stale Department of Health that the public health threat in this area
should be considered a Severe Public Health Hazard. A severe public health hazard is
defined as a situation in which the potential for illness exists, but illness is not occurring or
imminent. However, if remedial action is not taken, a severe public health hazard may
become a public health emergency, which is a situation in which illness is occurring or is
imminent.
Although the area that is not incorporated is not experiencing the extreme failure rate
that was found in the city, there are many limiting conditions in those areas, and some of
those systems may fail at any time in the future. This area would be considered an area of
health concern, and should be watched closely for failures. The optimal solution would be
for this area also to be serviced with sewers, but repair options to existing septic systems are
still available on many lots. Although many of the same limiting conditions exist in this
area, the problems in this area are not as severe as the problems noted in the annexed
portion. The Heath Department recommends that the residents of this area be instructed on
proper care and maintenance, practices which could possibly prolong the lives of the septic
systems. 'Be Health Department has provided the residents with informational brochures,
and will,at the request of the community, provide education and training at community
meetings.
12
1 � M.
SIRRRA MMGM. C S Wl7A)tr SURVM'
APMMWM
APPENDIX 1
S.att'.-K'no County/DEPARTMENT OF PUBLIC HEALTH
t ev.u[ s.ray senmr.v a..n�., •M..ninp�en ones r.ea {.a•a.[e
Y
L6WIrENCe ee11GNUt. Y,D.,Y.e.K.r ,
o�nmo.r wsue rt..nn FeMroary 21 , 197A
(
Gary Kruger, Senior Planner
Renton Planning Departmen'
Renton City Hall
200 Yill Are. So. E
Renton, Washington 98055
i
Re: Proposed Sierra Heights Annexation
Dear Mr. Kruger:
In regard to your letter renuestinp information on sewage disposal
systems in the eub,iect area, this department male a survey on Feb.
ruary 23, 1975. A map showing the results or this survey is enclosed.
Cut of one hundred and fifty-five (155) systems surveyed there were
thirty-one (31) failures ■r:! twenty-two (22) probable failures.
Fifty-three (53) confirmed and proheble failures out of one hundred
and fifty-f1,.v systems rep-esents a serious potential he.lth hazard.
Sanitary severs are very badly needed around S5 103r0 and Sv 1^bt`,
and would be a groat bene�t to tte whole a^ea.
' Very t^ly Your.,
Lieninr
Su-•ervisinf Sanitarian
Dirislon of Environmental 4ealth
Suutheast District 7ealth tenter
EH/et
Enc.
cc: Warren Gonnason, Director, Renton Public .'o-ks Department
otarlarcr HEALTH ceHrema.
F D.r.r [.{l •O Vrne.[\ eOV\nwa4r
r.
A
APPGNDIX 2
SIERRA HEIGHTS SEP^IC TANK SURVEv
I. Z13e identification:
A. Project location- S.E. 101st St. , S.E. 102nd St. ,
S.E. 103rd St., S.E. 104th St. between 128th Ave.
and 132nd Ave. S.E.
B. Number of residences included in survey- 110. Of
those 13 could not be contacted even when business
cards were left at their homes.
C. Evidence of naturally occurring surface waters near-
by- Residents report the existence of a pond south
of S.E. 104th St. in the past although the area is
now filled and houses are built on it.
II. Interview re.-ults,
Cate¢ory Address of home 9 in cateeory
Sewage• related odors 10102 130th Ave. S.E. 3.6
reported by resident 12821 S.E. 102nd
12917 S.E. 103rd
bush vegetative growth 1281 S.E. 103rd 1 .5
13005 S.E. 102nd
13052 S.E. 102nd
12822 S.E. 103rd
13026 S.E. 103rd
1- '2 S.E. 103rd 13025 S.E. 103rd
1 S.E. 103rd 13037 S.E. 103rd
I...I S.E. 103rd 10116 130th Ave. S.E.
13001 S.E. 103rd 12920 S.E. io4th
13017 S.E. 103rd 13026 S.E, io4th
Resident reports of 12 21 S.E. 102nd 11
problems in the winter 12811 S.E. 102nd
12830 S.E. 103rd
12914 S.E. IOlyd
j 13001 S.E. io3rd
13032 S.E. 103rd
13051 S.E. 103rd
13002 S.E. io4th
13018 S.E. io4th
10310 129th S.S.
10319 129th Ave. S.E.
103199 129th Ave. S.E.
J
APPENDIX 2
-2-
lI. Interview recul to continued,
cat corn Addrea e_ jhamt ¢ in ca+e_
Past problems in files 13025 S.E. 201st ��a
1304•1 S,E. joist 30
13052 S.E. 102nd 12090 S.E. 1S.E. 103rd
1
12834 S.E. 102nd 0303 Ave
10207 132nd Ave S,E. 10311 S29th Ave S.
13032 S.E. 103rd 129 10319 129th Ave S.
14 S.E. 103rd 10302 129th Ave S,129 S.E. 103rd 10310 129th Ave S..
12908 S.E. 103rd 109926 -129th Ave S..
21_30 S.E. 103rd 104336 129th Ave S.:
12816 S.E. 103rd 1304E S.E. 104th
1281E S.E. 103rd 13038 S.E. 104th
13017 S.E. 203rd 13032 S.E. 104th
13009 S.E. 103rd 13028 S.E. 104th
13009 S.E. 103rd 12920 o,E. 104th
Suspected to be hooked 12835 S.E. 102nd yy�tp storm drat
No evidence of problems
durine interview 36%
Dye test done with s 12803 S-E. 102nd negative result 12811 S.E. 102nd 6.4%
12821 S.E, 10:hd
22822 S.E. 10grd
13002 S.E. 104th
13018 S.E. 104th
Won't allow art inspection 20207 132nd Ave S.E.
1.8%
APPENDIX 2
-3-
III. Concluding remarks.
During the study weather conditions have been very
i wane. This hot, dry weather has effccted the con-
dition of all the drainfield areas so that none of
the dye tests showed any positive results. Residents
reported a very high water table in the rainy months
so that the drainfields, especially on S.E. 104th, were
flooded and essentially not functioning at all.
Several residents report That the smell of sewage is
strong in the storm drains during the winter and steam +
can be seen rising out of the storm drains in front
of 12822 S.E. 107rd during the winter. This is because
residents will channel water from the septic tank to
the storm drain and when hot water is used the steam
rises out of the storm drain. The practice of chan-
neling non-sewage water into the storm drains cppears
to be common and water runs freely through many of the
storm drains even during the hot weather. The channel-
ing of the non-sewage water relieves the load of
water in the septic tank drainfield so residents continue
to do it.
This study was designed, organized, and compiled by
Certy Coville, Yodit Mengist, and Sharon Cuiringl
I University of Washington , Department of Environmental
Health Interns.
A
V
APPENDIX 3
rap O
tJll et IISIW AYv I:.,nn
Seattle-King County Depaermcm of Public Health
February 14, 1991
Dear Sierra Heights Resident
Since 1987, the Seattle-King County Department of Public Health has been operating a
program to survey septic systems throughout the County. The goals of this project are:
1. Protect public health.
2. Provide long-term resource protection.
3. Provide information to the community and other appropriate agencies regarding the
status of sewage disposal systems in the area.
The Seta Heights area has been identified as an area where there is a relatively high
frequency of on-site sewage disposal problems. This has been documented in existing
Health Department records. For this reason and at the request of the City of Renton, the
Sierra Heights area has been moved up on the priority list for surveys,
TheDnrpose of this survey is to evaluate the status of all on-site sewage disposal systems
within a specific portion of the Serra Heights community, and to promote community
education and awareness regarding septic system operation and maintenance.
During this project, Health Department staff will be 14 rforn.;ng house-to-house surveys in
your neighborhood. Occupants will be surveyed ie irder to gain information on population
density as well as on-site sewage disposal system location, design, operation, and
maintenance. In addition to information gathering,site inspections will be performed on
individual rewaoe disposal systems. Dye testing may be conducted to further evaluate the
operational status of the sewage disposal system.
It is important to note that while this project is in cooperation with and at the request of
the City of Renton, it is an independent Department of Public Health project. The project
will be supervised and performed only by Health Department staff. The findings and
report will be independent of any other projects. These findings and report may be used
by the community. City of Renton and the County as a basis for proposed solutions, if
needed.
Upon completion of this project, the Seattle-King County Department of Public Health will
conduct a public meeting in order to share the information gathered with the Sierra Heights
community. You will be notified of this meeting at a later date.
Y 14�f Mqurlrc rmbnnm�nld lln�llh M,•1,Irw. �Y ., mnl pr'� brl,•lul AnY I\n.Lnylrn•M41! IYMiI$!YwlrlM,x ]•M4yaY1
J
i
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A1I1117NDIX l
Page 2
Health Department staff will notify you personally or in writing if your system is shown to
be malfunctioning. Under current County Lnd City of Renton egulstions, it is the
property owner's responsibility to repair a malfunctioning sewage disposal system.
Immediate repair or mitigated partial repair could be requireu in those situations in which
an unavoidable health harard exists. In most cases, no repair will be required until after
the survey is completed and a Health Department recommendation is made regarding
jwovised solutions.
For further ation, contact Shelley Kneip(Tuesday,Thursday or Friday mornings) at
2%-4708.
771 Very truly yours,
1
4 2�-
Ktn +w e.S.
La irchner, R.S. Michael A. Benoit
Supervisor Engineering Specialist n
Environmental Health Services Wastewater Utility
Seattle-King Co. Health DePL City of Renton
aR-svxvrReAR tr
«: ttxh.d J..tnd*t ,city d R.etm,Utility aydt w.n.
Raedall L.Pu ,City a Mvtm.W uW�auprrfoer
APPENDIX 4
�nrm�nb n.. w,a lmr nib.r.,n vror
lleanle-king Cobutn,Department of Public Health
:BATTLE-KING COUNTY DEPARTMENT OF PUBLIC HEALTH
SIERP• HFIGBTS SANITARY SURVEY PROTECT FACT SREE
Dear Resident:
The Health Department is presently conducting a sanitary survey of
the Sierra Heights neighborhood in order to measure how well your
septic system is functioning. The purposes of this protect are:
(1) to identify malfunctioning on-site sewage disposal systems and
to evaluate potential health risks; (2) to work with the community
in developing effective solutions to identified problems; and (3)
to provide public education on the operation and maintenance of on-
site sewage disposal system,,. The data generated in thin study
will be used to determine which, if any, portions of the
neighborhood,are experiencing problems that may require lohg-term
solutions. We would appreciate your cooperation is carrying out
this protect.
Representatives from the Seattle-King County Health Department
visited your home today to assess your on-site sewage disposal
system. We would like to make an appointment, at your
convenience, to come onto your property and assess your system.
Please contact Shelley Kneip at 296-4706, (Tuesday. Thursday or
Friday mornings) to make an appoin ant. Thank you.
•'err MaaR lw.lrworaull4al0 MnMw. ulu tr•r.rd w . xunr un Mo Ib,wnaxn•w6 r4bn]!aabaw lw.bww
r ,+
a
APPENDIX 5
O
rv,Men.\en vy rn.e,.
br'manN Rwl.Ab1W 11m 11Jl.Ian ulnr
Seattle-King County Department of PIbllc Health
SIERRA HEIGHTS SANITARY SURVEY
INFORMATIONAL MEETING
THE SEATTLE-KING COUNTY DEPARTMENT OF PUBLIC HEALTH
HAS COMPLETED THE SANITARY SURVEY CONDUCTED ON THE
SEPTIC SYSTEMS IN THE SIERRA HEIGHTS NEIGHBORHOOD.
THE HEALTH DEPARTMENT WILL BE HOLDING AN
INFORMATIONAL MEETING TO DISCUSS THE RESULTS OF THE
SURVEY WITH AREA RESIDENTS.
THE MEETP40 WILL BE HELD IN THE CAFETERIA AT SIERRA
HEIGHTS ELEMENTARYSCHOOL ON TUESDAY MAY28, 1991 AT 6:30 p.m.
(9901 132nd AVE SE)
IF YOU HAVE ANY QUESTIONS, PLEASE CONTACT SHELLEY KNEIP
AT 296-4708.
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APPEttDIX 6
Wrmai P Ap.q� Tn~i lLlr �:un.
tleettle•Ging County UePntyment of Public tloeltti
SIERRA HEIGHTS SANITARY SURVEY
PUBLIC INFORMATIONAL MEETING
AGENDA
6:30-6:40 Introduction
Paul Murakami, District Administrator
Southeast District Office, Seattle-King County
Department of Public Health
6:40-7:30 Overview of Project
Description, Process and Results
Shelley Kneip, Environmental Health Specialist
Seattle-King County Department of Public Health
7:30-7:45 Health Department Recommendations
Larry Kirchner, Supervisor
Environmental Health, Alder Square Office
7:45-8:30 Question and Answer Period
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TAKM
SIERRA HEIGHTS SANITARY SURVEY
TABLE I
OWNERIRENTER STATUS
OWNER OCCUPIED RENTAL
CITY —
number 55 7
(percent) (89%) (11%)
COUNTY
number 107 11
(percent) (91%) (9%)
TOTAL
number• 162 LS
(percent) (90%) (10%)
SIERRA HEIGHTS SANITARY SURVEY
i
TABLE 2
LOT SIZE
512,5000 212,500- 21,780- 2-43,5600 -
521,7W 43,5600
CITY 52 5 2 3
number (94%) (8%) (3%) (5%)
(Percent)
COUNTY 98 14 3 3
number (83%) (12%) (2.5%) (2.5%)
(percent)
TOTAL 150 19 5 6
number
(pest)
i
I
SIERRA HEIGHTS SANITARY SURVEY
TABLE 3
AGE OF SYSTEMS'
<toy :420y 20.30y >3Jy I UNKNOWN,
CITY 0 1 3 56 2
number (0%) (2%) (5%) (90%) (3%)
(percent)
COUNTY 3• 7 16 91 1
number (2.5%) (6%) (13.5%) (11%) (<I%)
(percent)
TOTAL 3 6 19 147 3
number (2%) (4%) (10%)
(percent)
' This is the age of the septic system itself, not of the residence. If the drainfield had been
partially repaired, the original installation date is given as the age. If a system has been
completely replaced, the age of the new system is given.
s.
OV
. r �
SIERRA HEIGII73 SANITARY SURVEY
TABLE 4
TANK SIZE
750 gal 9Wgal IOWgal UNKNOWN-
CITY 47 1 0 14
number (76%) (2%) (0%) (22%)
(percent)
COUNTY 46 25 4 43
number (39%) (21%) (3.5%) (36.5%)
(percent)
TOTAL 93 26 M(2%)
57
number (52%) (I4%) (32%)
(D to
Most likely a 750 gallon tank)
I
I
II I
SIERR.I HEIGHTS SANITARY SURVEY
TABLE 5
DRAINFIELD LENGTHS
��Gird frn)
<200' 2W'-300' >300' UNKNOWN
CITY 29 17 2 14
number (47%) (27%) (3%) (22%)
(percent)
COUNTY 42 29 2 45
number (35%) (24%) (1.6%) (38%)
(percent)
TOTAL 71 46 4 59
number (39%) (25%) (2%) (33%)
(percent)
I
SIERRA HEIGHTS SANITARY SURVEY
TABLE 6
SEPTIC SYSTEM REPAIR STATUS
a
REPAIRED AT LEAST ONCE
S CITY 19
number (31%)
(percent)
COUNTY 16
number (13.5%)
(percent)
TOTAL =35number
(percent)
SIERRA HEIGHTS SANITARY SURVEY
TABLE 7
SEPTIC TANK MAINTENANCE
(Pumping Frequency)
0-5 yrs >5 5 10 yrs >10 vrs NEVER UNKNOWN
CITY 40 8 4 3 7
number (65%) (13%) (6%) (5%) (11%)
(percent)
COUNTY 77 12 3 7 19
number (65%) (10%) (2%) (6%) (16%)
(percent)
TOTAL 117 20 7 10 2C
number (65%) (I1%) (4%) (5.5%) (14.5%)
(percent)
u.� ir 1 .
SIERRA HEIGHTS SANITARY SURVEY j
TABLE 8
RESERVE AREA STATUS
a 100% >50%; <50% NO RESERVE
<100%
CITY 5 9 r 23 25
number (8%) (14.5%) (37%) (40%)
(percent)
COUNTY 32 57 28 1
number (27%) (48%) (24%) (>1%)
(ant)
TOTAL 37 66 51 26
number (20.5%) (37%) (28%)
(percent)
SIERRA HEIGHTS SANITARY SURVEY
TABLE 9
OPERATIONAL STATUS
Total Failing Prefailure Urnitcd Operating
per code
CITY 62 24 19 12 7
number (34%) (39%) (31%) (19%) (I1%)
(Percent)
COUNTY 119 3 13 42 61
number (66%) (3%) (11%) (35%) (51%)
(percen0
TMAI. 181 27 32 54 68 `
number (100%) (15%) (17.5%) (30%) (37.5%)
(pe 9
i
9 xwAY Yaa�N'
YYLs-
SIERRA HEIGHTS SANITARY SURVEY
TABLE 10
SURFACE WATER SAMPLE RESULTS
(Jrcd cdij��".' I nrgaN.mu//Qard1 __
`
LOCATION 03/05/91 4123/91
>100
Storm drain outlet @ NE19th 39W
French drain outlet @ NE 21st
1600 35,0LW
Swamp at So. Redmond & NE 21st
200 filled _. .
dry
Outlet onto SE IOlst 0128th SE 200
NW corner of 126 SE& SE 100 300 dry
(open ditch)
<20o filled
West end of SE. 104th0 125 SE _
Storm drain @ 3824 NE 22nd
<200 300
Storm drain®3714 NE 22nd
600 43,0000
Storm drain mid-block Redmond
7400 29,0000
(between NE 21st&NE 22nd)
Storm drain @ 10213 126 SE
<200 dry
Storm drain ® 19I0 Redmo,d NE
2400 700
1 _
Storm drain ® 13029 SE 10ae <200 dry
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A a. CITYF RENTON
t .L Planning/Building/Public Works Department
Earl Clymer, Mayor Lynn Gutto.aon,AdsWstntor
4 I
June 8, 1992
CERTIFIED MAIL
Department of Fisheries
s Meadow Creek Office Park
Suite 240, Building E
22516 SE. 64th Place
Issaquah WA 98027
Attention: Larry Ratte'
SUBJECT: SIERRA HEIGHTS SANITARY SEWER INSTALLATION
Larry,
This letter is to document our on-site discussion, at Honey Creek, about the Sierra Heights
sanitary sewer line installation it is our understanding that as long as we are not within the
ordinary high water mark of Honey Creek, we ere not required to acquire an HPA permit.
The only work, as part of this project, that is in the immediate vicinity of Honey reek will
be the connection of the new line to the existing 12-inch sewer In the access road adjacent
to the creek. It is our intention that the excavation will be accomplished using sheeting,
shoring, and methodology that will not impact the bank or creek. You will be notified when
we are performing our work in this area.
It we have misunderstood and an HPA permit is required, please notify us by certified mail
by June 25th. If our understanding of your requirements and the fact that an HPA permit is
not needed is correct,then no further correspondence is necessary.
t.. Thank you for your time and cooperation in working with us on this project. If yyu have any
F quostions or require any additional information, please call me at 277-6206. -"
Very truly yours,
Michael A. Benoit
Wastewater Utility Enginee,
HC.00M.IAB'11 '
200 Mill Avenue South - Renton, Washington 98055
Am
+� ® CITYb RENTON
Hearing Examiner
Earl Clymer, Mayo, Fnd J•Qenroa
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May 8, 1992 ei.�,> 1992
ClN OF RENTON
Engineering Dept,
Lenora Blauman
Se or Planner
Development Services Division
RE: Sierra Heights Sanitary sewer Collection & Conveyance Facilities
File No. CU:LUA-92-020
Dear Ms. Blauman:
The Examiner's Report regarding the referenced application which was
published April 23, 1992 has not been appealed within the 14-day
period established by ordinance. Therefore, this matter is considered
final and is being transmitted to the city Clerk this date for filing.
Please feel free to contact this office if further assistance or
information is required.
Sincerely,
-TaAt�--V�,-
FRED J. KAUFMAN
HEARING EXAMINER
FJK:wmb
CC: City Clerk
Utility Systems
Construction Field Services Division
Development Services Division
+ 200 Mill Avenue South- Renton, Washington 98055 • (206)235-2593
�\Y1/� -
V.A r 1992
f OFFICE OF THE HEARING EXAMINr•R �3 1992
CITY OF RENTON
^'*Y OF REN.JN
REPORT AND DECISION -
_ APPLICANTS. CITY OF RENTON
Sierra Heights Sanitary Sewer Collection and Conveyance
Facilities
� '. File No.: CU;LUA-92-020
x•
LOCATION: The Sierra Heights neighborhood is oounded by Honey
f„ Creek on the west, SE 100th Street on the north, Union
Avenue on the east, and approximately NE 21st Street (SE
104th Street)on the south.
SUMMARY OF REQUEST: 7 he apPbcclt, the City of Ramon, is seeking a conditional
#r
use permit to construct a 218-linear foot portion of the
Sierra Heights Sanitary Sewer Collection and Conveyance
I`acihues through the Honey Creek Canyon, which lies in
r_ the west and southwest portion of the project area. This
t ` facility is intended to serve 65 homes in the portion of
$ierrL Heights Neighborhood located within City
boundaries. A ^onditional use permit is necessary because
the pipeline is planned to be routed down the steep slopes
of the canyon (inclined 40 - 100%) to the existing sewer
interceptor line adjacent to Honey Creek.
SUMMARY OF ACTION: Planning Division Recommendation: Approxal
L�
PLANNING DIVISION REPORT: The Planning Division Report was received by the
Examitrr on March 31, 1992
{
' PUBLIC HEARING: After t•viewin the Planrin Division Report, 1 g g port, examining 1
t available information on file with the application, and
�lmu .racking the property and surrounding area, the y
Examiner conducted a public hearing on the subject as
follows:
MINUTES
The hearing was opened on April 3, 1992 at 9:00 a.m. in the Council Chambers of the Renton
Municipal Building. Parties wishing to testify were affirmed by the Examiner.
The following exhibits were entered into the record:
Exhibit *1 - Yellow File containing application, proof of posting
and publication and other documentation pertinent to this request.
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City of Renton � � t
CU;LUA-92-020
April 23, 19,92
Page 2
Exhibit 02 - Site Plan Map
The hearing opened with a presentation of the staff report by LENORA BLAUMAN, Senior Planner,
who noted that this was a City application and there was no one else in attendance. This site was not
covered by the shoreline management act, but the Department of Fisheries would have control of any
work done in the stream. She said the project was intended to serve 65 residential units at this time
with 114 at a future date. The Examiner asked whether all projects of this nature, projects which were
below the surface, were govr fed by the conditional use criteria under the greenbelt area. h1&
$jaumau affirmed that was . .erect and said anything over a 40%slope was required by ordinance to be
brought to the Hearing Examiner. She said that the sewer system as a whole had been approved,
however, there was a 219 linear-foot section which was going to traverse Honey Creek Canyon. It
would not be going into the creek itself, but would then connect with the already-in-place sewer line
which paralleled the creek. Because of the Greenbelt Ordinance, it did need to come to the Examiner.
The Examiner asked for affirmation that the sewer line to which it would connect was already in place
to which Ms, Blauman answered, that was correct. She said there were also eight-inch sanitary sewer
lines in the general vicinity of the site which eventually woui;operate as part of the Sierra Heights
Collection Conveyance Facility,located in SE 102nd Street and at NE 19th Street sin ;zing the subject
area to the south. The proposal was to serve homes with currently-failing septic systems that had been
designated an area of severe health hazard by Washington State Department of Health. Replacement of
the systems was not an effective choice because of the high water table in the area, lack of ground
area, unfavorable soil conditions, and the need to protect the aquifer. Five potential alternatives had
been considered and alternative 'C" was selected as a result of the geotechnical evaluation. This remedv
was also the least costly and offered minimal interference with potential future land uses. 65 homes
would be served immediately with potential for 27 more within the City, and 114 more in the geneal
area, but this line would not serve to enablr a lot of growth in the area, which was zoned R-1 and G-
1, single-family, low density,and was compatible with the Comprehensive Plan. There would be no
major change in land use even if the area was totally built out. The project complied with the
environmental elements of the Plan and provided infrastructure to support the land use. The area of
construction would be returned to a vegetative condition, using native plants. Among the criteria under
which this proposal would be judged was community need. The introduction of revv lines into the area
was intended to address emergency conditions as established by various health departments, so there
was community need. The consulting firm of Brown and Caldwell looked at the alternatives and once
alternative "C" was chosen, then a second geotechnical study was performed to determine measures that
would allow construction at minimum impact to the area, to make sure that the canyon and creek were
not impacted. An underground line was considered to be compatible, however there would be some
minimal affects during construction.
The Examiner asked whether the property was City owned. MIKE BENOIT, Utility Systems, stated
that the property was owned by the Parks Department, Ms. Maureen stated that there would be some
transportation impacts by the small number of trucks necessary during the construction of the project,
but the applicant had submitted plans to ensure that, at a minimum, there would be ore-way traffic
maintained during major traffic hours, 8:30 a.m. to 3:30 p.m. There would be some noise and glare,
Primarily rotated to construction vehicles, for which standard construction measures for controlling of
noise would be undettaken. Special steps would be taken to protect the ecosystem. There would be
some disruption of vegetation, but the applicant would be returning native vegetation to the area and
monitoring for one year. The Examiner said he thought landscaping bands were usually required for
about three years after a project was completed. Ms. Blauman answered that the City had volunteered
to monitor the vegetation for a year and everything was warranted for a year after that. the kind of
vegetation being used was the type that took hold very quickly but the applicant would not be adverse
to the standard three year measure. The Examiner asked how wide the trench was being cut. ML
C
City of Renton
' C U;LUA-92-020
April 23, 1992
Page 3
' Benoit stateo that he did not have exact numbers, but typically, the trench would probably be about
s three to four feet wide going down the steep slope. Ms. Blauman continued, saying that the last
criterion under a Conditional Use Permit proposal was public improvement and the project itself was a
a public improvement, not expected to have a deleterious impact on the community. Although the area
` was 70 - 80% developed, other utility systems, water and storm water were generally adequate to
support existing, and a limited amount of new development. Because a devalo,.ment plan and a
construction management plan had been created that addressed concerns usually raised under an
4 environmental review, no specific conditions were recommended with this propmr,. A landscaping
surety device for the three-year period would be acceptable.
The Examiner asked what was the potential for the sewer line to break, taking judicial notice of the
sewer line that had broken in the canyon during the last year or two. Mr_DsnQiJ said that this line
should be compared more to the line on Seventh Street, where the I:-• a. down slope, the fill was not
compacted properly, and the slope stuffed off and took the pipe •v. r it. as +'so a concrete push-
' on joint pipe, so there wasn't a lot of structural integrity. P' s..e to %it a the ` :aminer was
referring was off of Devil's Elbow. That pipe was located l r 'ha . •lid a- whit:, s.a constructed by
cutting into the hiii, pushing the dirt off, and leveling it la, us an ac,.css road on. It was not
structurally built to be an everyday-use road, which was its 'seV"M ns' Whe. fir sewer and water
mains were put into the road, the sewer line was placed in eha 'it, tw qi,,,i wh'-h ws, not stable. In the
current proposal, the slope was a natural slope, it had not l„cn Iille^ and oiwn . the fi,ar •easy
material, the soil was more solid to hold the pipe. A restrain '.-join, , pe p;,,e mil be,to o, which
would prevent the pipe from pulling apart if there were any prnhlews.
The Examiner asked if the pipe would cut steeply down the slope nr traverse i. a, , mere. bir.
Benoit said the out would be as straight down the slope as possible, prabat•ly only a 10 degree angle,
and they would be using a small backhoe, winched down to the site tc d.:ninuise damage to the area. A
narrow trench would be dug, just enough to gel down into the good material. The Examiner said it
was his understanding the backhoe would not be driving over a large area, that it would be pretty
I much confined to the trench site itself. Mr. Benoit agreed that was correct and said it was made very
clear in the construction easement, planned adjacent to th sewer easement, that the construction
easement was not to be cleared and any tree removal was to ve on an as-needed basis. While it might
be necessary to take down some trees in the sewer easement, no trees would come down in the
construction easement without prior clearance from the Parks Department and the project manager.
Every effort would be made to preserve the trees. The Examiner stated that it looked as though they
were going to try to reuse some of the vegetation that was on the site. Mr. Benoit answered that would
be done if practical, but oegetation would probably be brought in as well, an action which would be
Ccleared through the Parks Department.
The Examiner called for fcrther testimony regarding this project. There was no one else in attendance
and no further comments from staff. The hearing closed at 9:27 a.m.
FINDINGS, CONCLUSIONS & DECISION:
Having reviewed the record in this matter, the Examiner now makes and enters the following:
FINDINGS:
1. T:re applicant, the City of Renton, filed a request for approval of a conditional use permit for
the installation of a new sewer line in a slope in excess of 40 degrees.
}
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City of Renton
CU;LUA-92-020
April 23, 1992
Page 4
The yellow file containing the staff report, the State Environmental Policy Act (SEPA)
i documentation and other pertinent materials was entered into the record as Exhibit *L
F{F 3. The subject proposal was reviewed by all departments with an interest in the matter.
{�. 4. The Environmental Review Committee (ERC), the City's responsible official, issued a
' '. Declaration of Non-Significance (DNS) for the subject proposal.
5. There was no opposition from the public regarding the subject proposal.
6. The subject site is located in the southeast corner of the Sierra Heights neighborhood, south of
the intersection of 124th Avenue SE and SE 104th Street (King County). The latter street is the
westerly extension of NE 21st Street. The project site is located in the east wall of the Honey
Creek canyon.
7. The proposal would lay approximately 218 feet of sewer collector line in the canyon, connecting
an existing sewer line in the canyon with new lines serving the existing neighborhood.
8. The existing homes, located east of Honey Creek, have been served by septic systems. Over the
last few years these systems have failed, creating health problems. The Seattle/King County
Health Department and the State Department of Health have declared the area an extreme
d health hazard which permits the connection to the sewer and makes funding available.
r, 9. The Proposal will initially permit 65 homes with failing septic systems to hook to the system.
Another 27 homes outside the City will be provided stubs for future connections and another
114 homes could ultimately join the system.
10. The City analyzed a number of options and chose this route for financial, technical and
environmental reasons.
It. The route will drop and traverse downslope in a t rich approximately 3 feet wide and 3 to 4
feet deep. The applicant will confine work as much as possible to the immediate alignment of
the sewer line in order to minimize slope disturbance and limit loss of vegetative cover.
12. The Comprehensive Plan designates the area in wh¢h the subject site is located as suitable for
the development of single-family uses and greenbelt. The Honey Creek stream corridor is
designated for greenbelt and, in this location, is owned by the Parks Department.
13. The area is developed almost exclusively with single-family homes. There is also undeveloped
acreage in the areas surrounding Honey Creek.
14. Due to high water tables, insufficie , and unfavorable soil conditions, further use of
septic systems for the single-family „v es in the area is impractical.
I5. The applicant proposes replacing at, vegetx . .rat is removed during construction with like-
kind vegetation to preserve the n; rral app" 'ante of the ravine.
16. While the applicant does not propose to cross the creek, the applicant will have the appropriate
permits for work around the creek. A Shoreline Master Permit is not required for this project.
,
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City of Renton
CU;LUA-92-020
n April 23, 1992
k; Page 5
17. The line will meet
the
minimum
will be n
requirements
a8 (eight) inch line and the City in sizing the line for
single-family uses The 1
Ig. The applicant has submitted detailed plans developed after a comprehensive geotechnical
analysis of the soils and slopes.
k
19. The construction will generate some noise and traffic but, once installed, the sewer line will be
unobtrusive.
CONCLUSIONS
g
1. The applicant for a Conditional Use Permit must demonstrate that the use is in the public
interest, will not impair 'he health, safety or welfare of the general public, and is in compliance
4
with the criteria found in Section -31-3b (C) which provides to part that:
a. The proposal generally conforms with the Comprehensive Plan;
b. There is a general community need for the proposed use at the proposed location;
C. There will be no undue impacts on adjacent property;
d. The proposed use is comDatlble in scale with the adjacent residential uses, if any;
e. Parking, unless otherwise permitted, will not occur in the required yards;
`. Traffic and pedestrian circulation will be safe and adequate for the proposed project;
a
g. Noise, light and glare will not cause an adverse affect on neighboring property;
h. Landscaping shall be sufficient to buffer the use from rights-of-way and neighboring
property where appropriate; and
b
i. Adequate public services are available to serve the proposal.
The requested conditional use appears justified and should be approved.
2. The Comprehensive Plan's designation of the area as suitable for single.family uses -Oulu
permit the utilities necessary to support such uses, including sew lines. In addition, the
Comprehensive Plan permits appropriate infrastructure to be dev loped to serve single-family
uses.
3. In addition to the Comprehensive Plan which suggests additional single-family development, the
zoning in the area also permits single-family uses.
The failure of the underlying ;eptic systems for existing development demonstrates, more than
anything, the underlying community need for the proposed sewer line. There is a health
emergency which can only be solved by providing a sanitary sewer system to replace the failing
septic systems.
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`+ City of Renton
i CU;LUA-92-020
April 23, 1992
Page 6
I
5. While the location is cncironmentally sensitive, the applicant proposes respecting the steep slopes
and vegetation as much as possible. The work will be confined to a narrow corridor to
minimize disturbance of the slopes and vegetation. The slopes will be protected from erosion
and native vegetation will be replanted on disturbed areas.
6. The actual proposal subject to this conditional use permit review will have little impact on
adjacent properties, although the overall sewering or the approximately 200 homes will have
some limited impacts. The actual proposal should have no permanent off-site impacts. Limited
additional noise and traffic is to be expected during construction.
7. Many of the criteria for ap,rroving a conditional use permit are not particularly applicable to a
project of this nature. The project, for the most part, will be an ir visible addition to the
community and issues such as scale, lot coverage, parking, traffic, noise and glare, and even
landscaping are irrelevant in ordinary terms.
g. While vegetation will be restored with vegetation similar to that removed in the trench location,
landscaping as such will not be installed. The applicant will replace any materials which do not
survive initial transplantation.
9. In conclusion, the proposed conditional use p in is appropriate given the existing health
hazards and measures 'he applicant proposes taking to ensure the integrity of the slopes in
which the sewer line will be installed.
DECISION:
The Conditional use permit is approved subject to the following conditions:
I. The applicant shall comply with the conditions imposed b, .he ERC.
2. The aPDlicant shall, as soon as possible, restore the slopes to a condition that npprcaches the
condition of the slopes prior to the intrusicn, including grade, stability, and vegetative
'ppearance.
ORDERED THIS 23rd day of April, 1992.
s.. FRED J. K4RFMAN
HEARING MAMINER
TRANSMITTED THIS 23rd day of April, 1992 to the parties of record:
Lenora Blauman
Senior Planner
Mike Benoit -
Utility Systems
i
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f'. City of Renton
I' CU;LUA-92-020
M April 23, 1992
PagE 7
f
�,. TRANSMITTED THIS 23rd day of April, 1992 to the following:
'[[[ Mayor Earl Clymer
Councilman Richard d inistrato
v Don Erickson, Zoning Administrator Lycn A. Guttmann, Administrator
Members, Renton Planning Commission Jim Hanson, Development Services Manager
Gary Gotti, Fire Marshal Ronald Nelson, Building Director
it Lawrence 1. Warren, City Attorney Jay Covington, Mayor's Executive Assistant
Transportation Systems Division Valley Daily News
Utilities System Division
%x
Pursuant to Title IV, Chapter 8, Section 15 of the City's Code, request for reconsideration must be filed
in writing on or before 5:o0 P.M. May ', 1992.. Any aggrieved person feeling that the decision of the
Examiner is am',iguous or based on errrneous procedure, errors �f law or fact, error in judgment, or
the discovery cl new evidence which could not be reasonably available at the prior hearing may make a
written request for a review by the Examiner within fo
urteen I4 days from the of the
Examiner's decision. This request shall set forth the specific ambiguities or discoverederrors by such
appellant, and the Examiner may, after review of the record, take further action as he deems proper.
An appeal to the City Council is governed by Title IV, Chapter 8, Section 16, which requires that such
appeal be filed with the City Clerk, accompanying a filing fee of S7S,00 and meeting other specified
requirements. Copies of this ordinance are available for inspection or purchase in the Finance
^ Department, first floor of City Hall.
The Appearance of Fairness Doer.me provides that no ex parte (private one-on-one) communications
may occur concerning pending 1,Id use decisions. This means that parties to a land use decision may t
not communicate in private with any decision-maker concerning the proposal. Decision-makers in the
land use process include both the Hearing Examiner and members of the City Council.
All communications concerning the proposal must be mad^ in public. This public communication
Permits all interested parties to know the contents of the communication and would allow them to
openly rebut the evidence. Any violation of this doctrine would result in the invalidation of the
request by the Court.
The Doctrine applies not only to the initial public hearing but to all Requests for Reconsideration as
well as Appeals to the City Council.
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STUDY AREA MAP
FIGURE 1
CITY OF RENTON
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CITY OF RENTON .:sy c,- RENTL,v
MEMORANDUM Engi:eering (jept
To: Michael8enoit
From Don Erickson, Secretary
Environmental Review Committee
Date: March 24, 1992
Subject: Sierra Heights Sanitary Sewer Collection/Conveyance Facilities
LUA-92-020-CU;ECF
We would like to inform you that the date of Tuesday,April 7, 1992, at 9:00 a.m., has been set for
a conditional use permit public hearing to review the above-referenced natter. The hearing, before
Fred Kaufman, Hearing Examiner, will be held in the Council Chambers on the second floor of City
Hall, Renton. Washington.
The applicant, in this case the City. is required to be represented at the public hearing. A ccpy of
the Preliminary Report to the Hearin; Examiner wil, be maua available to you one week before the
hearing. Please contact Kathleen Childers, 277-5582, or Sandi Seeger, 277-5581, regarding
Picking up or receiving the staff report. If you have any questions I can answer, please call me at
ext. 6181.
F
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CITY OF RENTON
MEMORANDA
DATE: March 24, 1992 `
TO: 'Richard Anderson.Manager
I
Utilities Engineering Section
STAFF CONTACT: Mike Benoit,Project Manager
FROM: Ron Nelson,Acting Manager
Development Services Section
STAFF CONTACT: Lenora P'auman,Project Manager
SUBJECT, Sierra Heights Sanitary Sewer Conveyance FWc Bides Hearing Efaimmer Report
Attached please rind the fine) copy of the Preliminary Report for :he Siena Heights Sanitary Sewer
Conveyanca Facilities. This report Incorporates The suggestions which were provided by team members
dur',ng their Initial review.
All required materials have been submitted to the Hearing Examiner. The hearing is scheduled tot Ap. 7,
1992 at 9:00 a.m. We look forward to seeing you[hare-
If you have questions or would like additional information,please Contact as
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CITY OF RENTON
HEARING EXAMINER
PUBLV^ HEARING
AGENDA
COMMENCING AT 9:0-AM. APRIL 7. 1992
COUNCII CHAMBERS.SECOND FLOOR, RENTON MUNICIPAL BUILDING
The applicationlsi listed are in order of application number only and not necessarily the o-.±er in
which they will be heard. Items will be called for hiarino at the discretion of the Hearing Examiner.
PROJECT NAME: Sierra Heights Sanitary Sewer Ccllection/Co^.eyance Facilities
PROJECT NUMBERS: LUA-92.020-CU:ECF
PROJECT DESCRIPTION: The applicant, the City of Renton, is seeking environmental review and
4 a land use permit (conditional use permit) to construct the Sierra Heights Sanitary Sewer
I CollectionrConveyance Facilities. The prolect is bounded by Honey Creak on the was SE IOCth
Street on the north, Union Avenue on the east and approximately SE 104th Street on the south.
I
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DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
Y�
PRELIMINARY REPORT TO THE HEARING EXAMINER
PUBLIC HEARING
APRIL 7. 1992
APPLICANT: City of Renton
PROJECT NAME Sierra Heights Sanitary Sewer Collection and
Conveyance Facilities
FILE NUMBER: LUA-92.020-CU;ECF
LOCATION: The Sierra Heights Neighborhood is buunJed by
Honey Creek on the west, Southeast 100th Street on
the north, Union Avenue on the east, and
approximately N.E. 21st Street(S.E. 104th Sor.e0 on
the south.
The section of the coil action/conveyance facility
under consideration is Itcated in the southeastern r
portion of the Sierra Heights Neighborhood.
A. SUMMARY AND PURPOSE OF REQUEST:
The applicant, the City of Renton, is seeking a conditional use permit to construct a 218
I linear foot portion of the Sierra'leights Santary Sewer Collection and Conveyance Facilities
through the Honey Creek Canyon, which lies in the west and southwest portion of the
project area.
1 The Siena Heights Collection and Conveyance Facilities are intended to serve 65 homes in
the portion of the Sierra Heights Neighborhood located within City of Renton boundaries. A
conditional use permit is necessary as a result of the fact that the pipeline is planned to be
routed down tho steep slopes of the Canyon inclined 40 oercent - 100 percent) to the
existing sewer interceptor line adjacent to Honey Creek.
i These facilities are intended to serve homes the portion of the Sierra Heights
Neighborhood located within City of Renton boundaries.
B. GENERAL INFORMATION:
j
1. Owner of Record: City of Renton 9
2. Applicant: City of Renton
3. Existing Zoning: R-1 kRy of Renton). RS-7200, SC-P(King County). {
4. Existing Zoning in the Area: C 1 R-1 (City of Renton); RS-7200, SC-P King
'.u-nty). '
5. Comprehensive Land Use Plan:Single Family, Greenbelt 10ty of Renton); Urban (King
County).
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PPELMIHARy REPORT TO THE AR,NO EXAMINER Surra He Ma SemUrY Sewn®iEet on (:.Pre 7, 199i.
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6. Size of Property: 218 lineal feet
7. Access: Access to the Sierra Heights neighborhood is off of
S.R. 900. Access to he project site is via N.E. 21st Street (Southeast 104th Street).
C. Land Use: Single family residential, Greenbelt.
9. Neighborhood Characteristics: North: Single family
FM: Single family.
$OOth: Honey Creek; Single family
West: Honey Creek; Single family
{
C. HISTORICAL/BACKGROUND:
Action Fil
_..fl r in n P_dLfl 5
Annexation
4070 6-1-87
D. PUBLIC SERVICES:
1. Utilities
a Vgff: Two 6 inch walermains are located parallel along SE 103rd Street
128thEAve. SE. Ae4 in rynwatermain is located aongr 129th AvedSE which
connects tc both 6 inch water
mains on SE 103rd Street and SE 104th
` reel. An 8 inch watermain is located south extending from SE 104th
Street. A 6 inch watermain along 129th Ave SE connects
watermain along SE 104th Street, to a 6 inch
b. ,a£w9l An 8 inc, sanitary sewer line is located parallel to SE 102nd Street
NE'ust north of the project site. An 8 inch sanitary sewer line is located along
19th Street south of the or site. Improvements to area wide
rn sanitary sewer lines will be included as part of the greater Sierra Heights
Sanitary Sewer Collection/Conveyance Facilities (including that portior. of the
improvements which constitute 'he subject application)
4 - Storm W t nr..a___. c storm water line C �:—"�ys A 12 inch e extending west along
N E. 22nd Street connects to a 12 inch storm line extending south through
the site. Two 12 inch storm lines run south and connect to a another 12
inch line along Redmond Ave. N.E.
2. Fire Protection: Provided by the City of Renton as per ordinance requirements.
3. Transit: Not applicable
4• Schools: Not applicable
8. Recreation: Not apnlicable
q ,
PREA-WARY TO TOE HEARING EXAMINER Sierra Heighte Servtery Sewer Collection erq Conveyance FeFilitib
Aerie 7,11111112
Pepe a
E. APPLICABLE SECTIONS OF THE ZONING CODE:
1. Conditional Use Ordinance 4.31-36
2. Greenbelt Ordinance 4.31-35
F. APPLICABLE SECTIONS OF THE COMPREHENSIVE PLAN OR OTHER
OFFICIAL CITY DOCUMENT:
1. Comprehensive Land Use Plan
i
2. Comprehensive Sewer Plan
3. Aquifer Protection Area Ordinance(pending) apaa##
4. Mining, Excavation and Grading Ordinance (4-101
G. DEPARTMENT ANALYSIS:
1. The applicant. the City of Renton, has obtained necessar
y general peyanc Facil.es.
to construct the Sierra Heights Sanitary Sewer Collection and Conveyance FaciAGes.
The purpose of this application is to obtain a conditional use permit to construct that
Portion of the facilmFs which is to be installed in the Honey Creek Canyon.
A conditional use permit is necessary as a result of the fact that the conveyance
pipeline is planned to be routed down the steep slopes of the Honey Creek Canyon
(inclined 40 percent- 100 percentl to the existing sewer interceptor line adjacent to
Honey Creek. The line will not enter the Creek. The City's Greenbelt (4-31.35)
Ordinance requires conditional use permits for such activities on!hes:steeply sloped
Properties.
The Sierra Heights Collection and Conveyance FacilitiRs are intended to serve homes
in the portion of the Sierra Heights Neighborhood located within City of Renton
boundaries. These properties are currently served by failing septic systems (the area
to be served by the system has been designated as an P of 'severe health,
hazard' by the Washington State Department of Heaith). h,- rat of on-site
systems is nnf feasible due to lack of available space, unt it conditions
and the presence of a high water table.
The applicant considered five potential sewer system alternatives (A - E) which are
described in the application matenais. Alternative 'C' idescribed in Exhibit sil is
Preferred based upon an evaluation of geotechnical, land use and monetary impacts.
This alternative calls for the proposed sewer lines to traverse Honey Creek Canyon
to connect with existing sewer lines paralleling Honey Creek.
Approximately 65 homes will be connected as part of this project: 27 additional
homes (outside City limits) wiil have stubs for future connection. Up to 114 more
properties could ultimately be served through extensions of this new sewer.
2. Pursuant to the City's Environmentai Review Ordinance and SEPA (RCW 43.211C1,
1971, as amended). the Environmental Review Committee issued a Determination of
Non-Significance, on February 26. 1992. Mitigation measures were not required as
l
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PRELWIWAMY REPORT TO TIME NEARING EXAMINER alena HeieMf semtary Sewer Colle<oan eM Conve M P Ne
APO 7.1992 Pege 1
ERC determine'. that the applicant had incorporated into the application materials
those systems necessary to address envirormental iCpacts.
3. Represemativ_s from various departments have reviewed the application; their
commt.nis are integrated into the text of this report.
4. CONDITIONAL USE CR(TERIA: Section 4.31-36 lists 11 criteria that the Hearing
Examiner is asked to consider, along with all other relevant information, in making a
decision on a Conditional 'Jae application. These include the following:
a. Comprehensive Plan: The proposed use shall be compatible with the general
purpose, goals. objectives and standard Of the Comprehensive Plan, the
Zoning Ordinance and any other plan. program, map or ordinance of the City
of Renton.
The Sierra Heights Prea generally is currently designated for single-family use
on both the Comprehensive Plan Map and the Land Use Zoning Map;
development In the area is consistent with this designation. Approximately
80% of the properties are developed; a review of property maps for this area
indicates that approximately one dozen properties are vacant at this time.
The project area submitted for this conditional use nermit is designated as
'Greenbelt' on the Comprehensive Plan, based upon the presence of Honey
Creek Canyon.
Comprehensive Plan Goals, Objectives and Policies(March. 1986) encourage
the provision of systems t0 support single-family uses in developed areas.
Providing sanitary sewer service to areas developed or to be developed as
urban single family residential is encouraged " well by the King County IP-
314 King County Comprehensive Plan. 1985). and is mandated by the State
Growth Management Act(RCW 36.70A.1101.
The proposed sewer system will be installed as an 8-inch line. which is
standard ;of single family development and the minimum size allowed by the
City of Renton and State Department of Ecology. This project is identified in
the City's 1983 3anitary Sewer Comprehensive Plan Iturreni), as well as the
1992 plan (pending adoption).
b. Community Need: There shall be a community need for ins proposed use at
the proposed location. In the determination of community need. the Hearing
Examiner shall consider the following factors, among all other relevant
information:
(I) The proposed location shall not result in either the detrimental
overconcentration of a particular use within the City or within the
immediate area of the proposed use.
The imroduroon of new sewer lines into the Sierra Heights area in
general, and the Ravine in particular, is intended to provide basic
sanitary Sewer taCllities to existing properties. As the properties are
largely developed. improved sewer service is not viewed as
facilitating substantial new development.
The area to be served by this proposed sewer project has been
investigated by the Seattle-King County Health Department (Health
Department). Througn a house-to-house testing program, the Health
Department determined that, within the City portion of the area, 39%
of the septic systems were failed and 31% were in pre-failure.
Based on a recommendation by the Health Department, the State
Department of Health tDOHI has declared the portion of Sierra
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MELIMINARY REPORT TO TI'.NEARING E)AMINER Slaria Haphta San• S�CWI m tl,nmmo aaciliaaa
Apnl 1, 1992
Papa 5
Heights within the City a severe health hazard. The recommendation
by both the Health Department and DOH is that sewers be Provided,
The proposed project is thus needed by the community and in the
public interest.
(21 That the proposed location is suited for the proposed use.
The proposed locaton of the collection system, in general, is dictated
by the need to serve the neighborhood. The conveyance portion of
the project is one cf five originally proposed and studied. It was
determined, i (rough eng, eating and geotechnical investigation of
these five routes, that the proposed route (Option C) was the most
appropriate and bes: suited for the task. Once the exact route was
selected, a secont geotechnical stud-, was performed to determine
the measures necessary to construct the sewer line and maintain the
integrity of the scope.
The selection of the alternative which is proposed to ^elude
construction in the Honey Creek Canyon was based upon 1••rat
factors. For example, this alternative provides the ability to st . e
the larger affected area, and requires less pipeline. These fez s
serve to reduce the need for present and future intrusion
disruption to developed areas. Approximately 200 properties will us
affected during construction of the project as a whole. No
disturbance to private properties will occur as a result Of construction
in the ravine.
Design/engineering and monitor og plans for activities in the Canyon
are structured to include provisions for trenching, erosion control,
restoration and monitoring (during construction and after restoration)
to ensure the intagrity of the slope and Honey Creek (see Section
G.A.d. for complete discussion Of improvement plans?.
C. Effect on Adjacent fitcperties: The proposed use at the proposed location
shall not result in substantial or undue adverse effects on adjacent property.
The following site requirements shall be her;fired:
(1) Lot Cove age: Lot coverage in residential districts (R-1 and R-2) shelf
not exceed fifty percent 150%1 and the lot coverage of the zone in
which the proposed use is to be located. Lot covercge in all other
zones shall conform to the requirements of zone in which the
Proposed use is to be located.
Not applicable.
(2) Yards: Yards shall conform to the requirements of the zone in which
the Proposed use is to be located. Additions to the structure shall
not be allowed in any required yard.
Not applicable.
(3) Height: Building and structure heights shall conform to the
requirements of the zone in which the P.loosed use is to be located.
Spires, belhowers. public utility antennas 'r similar sthucture ma'
exceed the height requirement upon approval A a variance. Buil7h 1
heights should be related to surrounding used in ordar to ak v
optimal sunlight and ventilation, and minimal obstruction of views
from adjacent structures,
Nor applicable.
01
PREJMINARY REPORT TO THE HEARING fAMINER a,arra HeiaMe 9ewe,CW1,,,Pn eM f-cove enc f lieu
APn11. 1993 .—
PpeL
d. Compatibility: The proposed use shall be compatible with the residential
scale and character of the neighborhood. (Ord 3599, 1-11-821
The addition of a sewer line in the Honey Creek Canyon (on City owned
property) is not anticipated to result in substantial or undue adverse effects
on adjacent property during operations; once installed it will benefit the
community by providing reliable sewer services to benefit public health.
e. Parking: Parking under the building structure should be encouraged. Lot
coverage may be increased to as much as seventy-five percent (75%i of the
lot coverage requirement of the zone, in which the proposed use is located,
8 all parking is provided underground or within the structure. (Ord.3903, 4.
22-85)
Not applicable.
f. Traffic: Traffic and circulation patterns of vehicles and pedestrians relating
to the proposed use and surrounding area shall be reviewed for potential
effects on, and to ensure safe movement in the surrounding area.
Construction: Because the proposed sewer ime is planned to be installed in
Honey Creek Canyon, on City property, no direct traffic impacts are
expected. Vehicles travelling to the site are anticipated to create minimal
traffic impacts.
The applicant has submitted plans which ensure that, at a minimum, one
way traffic will be maintained between the hours of 8:30 am and 3:30 pm
on all streets affected by the project. Outside these working hours, two
lanes of traffic must be maintained !Special Provisions 1-07.230)I. A traffic
control plan shall be approved by the City Traffic Engineer (Special
Provisions 1.04.131.
Operations: Not applicable.
g. Noise. Glare: Potential noise, light and glare impacts shall be evaluated
based on the location of the proposed use on the lot and the location of on-
site parking areas, outdoor recreational areas and refuse storage areas.
Constriction: Some noise light and glare may be anticipated to be caused
by construction equipment. Impacts to dwelling units should be addressed
by the location of those units well-away from the construction area, and by
the employment of standard construction management measures (e.g, limited
hours of operation, best management practices). Similarly, impacts to the
nearby Canyon/Creek ecosystems should be addressed by a standard
construction management plan.
Operations: Not applicable.
h. .andscaping: Landscaping shall be provided in all areas not occupied by
building or paving. The Hearing examiner nay require additional landscaping
tc buffer adjacent properties from potentially adverse effects of the proposed
use.
Construction activities in the Canyon, do have the potential to result in
impacts such as soil erosion, creation of dust, and change, to vegetation.
In the environmental analysis provided by Brown & Caldwell, the underlying r
glacial till soils are reported to be suitable to support the planned
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PRELIMINARY REPORT TO THa'IEARING EXAMINER 9 ena Me me S to Se r Colle 4 n ivtl Con va a F.,fitetii
Apre). 1992 Paga 7
development. Construction plans have been submitted by Ilia applicant,
based upon findings presented/guidance offered in these studies. These
measures are considered by staff to adequately address potential impacts
resulting from construction in the Canyon, based upon evaluation of slope
configuration, soil type, soil permeability/stability.etc.
For example, the construction management plan proposed by the applicant,
includes erosion control and storm water control systems, based on the Y'ng
County Surface Water Design Manual, as adopted by the City of Renton.
Dust controls are provided. The applicant has also provided a program
(construction plans and speicification) to address potential impacts to the
sloped areas; this program includes elements for protecting slope
configuration, and exsting vegetavhn and for in-kind replacement of any
plantings which must be removed to install the sewer; restoration on the
steeply sloped areas will include installation of staked excelsior matting as
well. Replacement plantings would be monitored for one year to ensure that
they are well-established; plantings are warranted for one year after
acceptance (Construction Contract - Item 8 and Specinl Provisions 1-
09.1 C(Gil. These plans are intended to ensure the continuing integrity of the
slope and the protection of adjacent Honey Creek. All work, including
restoration, is warrantied for one year after acceptance.
The applicant is aware that an HPA permit from the Department of Fisheries
is required for all work waterward of the ordinary high water line or edge of
the bark of Honey Creek.
I. Accessory Uses: Acessory uses to conditional bees such as da• -ols,
auditoriums used for social and sport activities ealth centers, . ..vents,
preschool facilities, convalescent homes and oth... of a similar nature :hall
be considered to be separate uses and shall be subject to the provisions of
the use disbict in which they are facet,d.
Not applicable.
j. Conversion: No existing building or structure shall be converted to a
conditional use unless such building or structure complies, or is brought into
compliance, with the provisions of this Chapter.
Not applicable.
k. Public tmpfovements: The proposed use and location shall be adequately
served by and not impose an undue burden on any public improvements,
facilities, utilities, and services. Approval of a conditional use permit may be
1 conditional upon the provision andlor guarantee by the applicant of
necessary public improvements. facilities. utilities, nd/or services.
No undue impacts to existing storm sewer system or water lines are
anticipated from the installation or operation of the Sierra Heights Sanitary
Sewer System. The applicant has submitted a plan indicating that the
proposed system will be coordinated with those working systems, so that
service is not interrupted.
1 The addition of this proposed sewer system should not result in a need for
improvements to other utility services. Existing public improvements (e.g.
1-ater mains. storm water management systems, roadways) aro adequate to
serve existing development, properties which could ue served with future
sewer extensions (27 additional homes, wnich are outside City limits, will
have stubs for future connection; up to 114 more properties could ultimately
be served through extensions of this new sewer); and any new development
(maximum twelve units) enabled by the proposed sewer lines. In the event
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MEt1MeiARY REPORT TO THE HEARINO EEAM19En Sur.Huenrs SeNtary Sewer Cd n nd C I' b
APd T. 1992 Paaea
that new development occurs in the area, necessitating new utility systems,
developers will be required to install mandated systems, in conjunction with
environmental and land use review for new proj9cts.
H. DEPARTMENTAL PECOMMENDATiON:
Staff recommen!that the Hearing Examiner determine in favor the proposed conditional use
permit ICU 020-921 to allow construction o• a 218 linear foot portion of the Sierra Heights
Sanitary Sewer Collection and Conveyance faci!ity in Honey Creek Canyon, as proposed in
development planslspecificatlons submitted in February, 1992.
+;'
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CITY OF RENTON
DETERMINATION nF NON.SIGNIFICANCE
APPLICATION NO(S)' CU:ECF-020-92
PROPONENT: City of Renton-Utility Systems
FHOJECT NAME: SI6na Heights Sanlary Sewer Collection and Conveyance Facilities
DESCRIPTION OF PROPOSAL. The applicant,the City of Renton,is seeking environmental review and a land use
permit(conditional use permit)to construct the Sierra Heights Sanitary Sawa, Collection ant Conveyance Facilities.
LOCATION OF PROPOSAL: The Sierra Heights Neighborhood Is bounded by Honey Creek on the west,
3 Southeast 100th Street on the north,Union Avenue on the east and approximately S E 104th Street on the South.
4.
LEAD AGENCY: City of Ramon
Department of Planning/Building/Public Works
t. Deva:opment Planning Section
The City of Renton Environmental Review C;omnamae lass detemllned that it does not have a probaole signiticam adverse
impact on the environment. An environmental impact statement (EIS) is act required under RCY. . 21 .030(2)(c). This
in decision was made after review of a completed environmental checklist and other information on ile with the lead agency.
This intcrnatlon is available to the public upon request.
There is no comment period for this Determirwtion of Non-Significance.
Responsible Official: Environmental Review Committee
c/o Don Erickson,Secretary
Development Planning Section
Department of Planning/Building/Public Works
200 Mill Avenue South -
Renton,WA 96055
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You may appeal this determination it writing to Renton Hearing Examiner no later than 5 00 p.m.,March 16,1992.
To appeal this Declaration,you mv,.t file your appeal document with the hearing examiner within fourteen(14)days of the
date:he Declaration of Non-Sig;aficance is final or the Declaration of Significance has been published in the official city
newspaper. See City Code Section 4$23,RCW 43.21C.075 aril WAG 197-11-6W for further details. There shad be only
one appeal of a Declaration of Non-Significance or Declaration of Significance,and it an appeal has already Lo ,;Yad,your
apreal.nay be joined with the prior appeal for hearing or may be dismissed If the other appeal has already b"n heard.
You should be prepared to make specific factual objections. Contact Cary of Renton. Development Services Chdsr
read or ask about the procedures for SEPA appeals.
PUBLICATION DATE: March 2. 1992
DATE OF DECISION: February 26, 1992
SIGNATURES:
i
t ✓I ___/��t�
y n min,trator
Department of Planni11ng/Buudlnq/Pv::4c Works
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JOWE.We efil�y, ammis m or
munity Service Depart
er, re SATE
Renton Fire Department
TIMM
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CITY OF RENTON
MEMORANDUM
DATE: February 19, 1992
TO: Lenora Blauman
FROM: Mike Benoit hmS
SUBJECT: SEPA REV12W FOR SIERRA HEIGHTS SANITARY SEWER
The following items may help you put into perspective a couple of the review
comments:
A) The study area encompasses 188 properties, most of which are developed. I
Except for one or two undeveloped for under-developed) lots, the only
properties with development potc�tiai ;n the <tudy area are the 55 , lots
owned by Laker'dge Development. The emergency services shoul4 ., dress
their concerns, for future service, to the development of those lots.
B) Emergency access will be maintained per the Special Provisions section of the
Contract Specifications (see attached).
C) A redlined temporary erosion control plan will be provided by the contractor for
approval by the City prior to construction.
D) Temporary and permanent Prosion protection will be per the Design Phase
Geotechnical Report provided by Geo Engineers (January 15, 1992).
E) The work along Honev Creek will be performed under an HPA Permit. Our
intent is to work under the permit issued for the access road stabilization. If
the timing is not appropriate, we will acquire a permit specifically for this sewer
project.
F) Trees removed in the construction easement (if any) will be replaced by like
trees. Our intention is to preserve all tree, within the construction easement.
GI The Wastewater Utility is in the process of preparing an ordinance for transfer
of partial jurisdiction. This will ac• as an easement between two departments
of the City.
s *ENowN d
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K�P-27-0509 SIERRA HEI= SELIPS LID #335 - EPA 2
I
DEPARTMEN. PLANNING/BUILDING/F IC WORKS-"' -
ENVIRONMENTAL CHECKLIST REVIEW SHEET
.NG DEPARTMENT:/ 2 U / .. /0
c CIRCULATED: 02!05 92 ObtMENTS DUE: O2 18 9Z
APPLICATION NO(S): CU,ECFd20-92 PROJECT WORK ORDER
PROPONENT: CIry of Renton NO.
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities Time Chargeable For
f
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BRIEF DESCRIPTION OF PROJECT: The applicant the City of Renton, is seeking environmThens al?10V1W4V4.eel
permit(conditional use permit)to construct the Sierra Heights Sanitary Sewer Collec,or.and Conveyance Facilities. These
facilities are Intended to serve homes in the portion of the Slema Heights Neighborhood located within City of Renton
boundaries. These properties are currency served by failing septic systems(the area to be served by the system has been
oesignated as an area of-severe health hazard'by the Washington State Department M Health),
Approximately 65 properties will be served oy the Slern Heights Facilities: approximatsly:TO properties will be affecterl °
during construction. Replacement m: on-Me systems is not feasible due to lack of available space, unfavorable soil
coriftons and the presence of a high water table. The conditional use permit is required because in some areas 1&
construction could occur in greenbelts with a slope o1 40%or greater.
The applicant considered five potential sewering alternatives (A - E) which are described In the application materials.
AtematNe'C'is preferred,based upon an evaluation of geotechnical,land use and monetary Impacts. -.
LOCATION: The Sierra Heights Neghborhond Is bounded by Honey Creek on the west,Southeast 100th F—eet or the
north,Union Avenue on the east and approximately S.E.1041h Street on the south.
SITE AREA: BUILDING AREA(grue )
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
IMPACT IMPACT NECESSARY
1. Earth ✓ ✓
2. Air ✓
3. Water v/ _
4. Plants ✓
5. Animals
6. Energy&Natural Resources
7. Emironmental Health ✓ ✓
8. 'and&Shoreline Usti
9. Housing___
10. Aesthetics
11. Ught&Glen_
12. Recreation ✓
13. Historic&Cultural Preservation
14. Transportation
15. Public Services _
r
16, Utilities
I
SIERRA MEIGHTS SANITARY'EW¢R CO/1TIOH/WNVCYANCE PACIU'1¢g
FW "S.19 a/—�-- CUICP4110,e7
t a. REVIEWING DEPARTMENT/DIVISION:
COMMENTS:
:Ts 444elV- OM� C"CfmLln Wln lel^ W,3wa
CNN- or' More- O�- -f�)e
� OffGrNa+l'�L rtx+-F�S lucklcQ � ~'�'.
p
Susccpf-%bfc- 4m a rup4,:re or Inrtea� p_
� (Gn7p[ MGVemc^j-L ? � J
w
sttwts -i{�w.f -fl��'s Is o+a �I�,.Por+oK.4-
`C-01VS��GrQ'��ON QNOL cNery e4ari
40 artaAG l 4 SGcFt
aJU I:ctr\ Witt hO.Uf Mi^1iM0.�
ttw 'F a:4er .4.s COM�iIlF\O(v .
ak\ es;-0 4s sMcal� ice
F-rCJV TC, f1'MINi M1ZC_ &k,+orbaJ c- OF `V�
h;`�s,d1t aN& S-6reo.ev-. T-s 'VAere- ckmy cLtaace-
,f�Ttor� utjS+O.61e.? (,U-�a�q�a�.�C.c� o�c. Y�.w.� �✓
We have reviewed this appliCEtlon with pardct,:ar attantk,to these tlaae kl YAYoh we
propoidentified areas of GrohaGle impsct or areas where addRbl>r k*mudarr b Needed toproperty
SlgrlaNre G!Direct or A�epresentative __. ___ Date
.w... tieAw NOW
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DEPARTMEN = PLANNING/BUILDING/F IC WORKS
'I
ENVIRONMENTAL CHECKLIST REVIEW SHEET
REVIEWING DEPARTMENT: C'• rof,,* 1�ct-k,�
DATE CIRCULATED: 02/05/92 COMMENTS DUE: 02/19/92
PROJECT WORK_ORDER
APPLICATION NO(S): CUtECFO20.92 No. 5'S p Fs-- '-
PROPONENI Clry of Renton T1Te Chargeable Fpr
PROJECT TITLE. Slam Heights Sanitary Sewer Collection and Conveyance Facilities p hr�
BRIEF DESCRIPTION OF PROJECT: The applicant, the City of Renton, is seeking envimplll a r{T9Vf ..,I-a�ieM+75�
permit(conditional use permit)to construct the Sierra Heights Sanitary Sewer Collection and Conveyance Facilities. These
facilities are intended to serve homes In the portion of the Siena Heights Neighborhood located wah;n City of Renton
boundaries. These properties are currently served by fading septic systems(the area to to served by the system has been
designated as an area of-severe health hararl'by the Washington State Department of Health).
4pproximetely 65 propartles will be served by the Slerre Heights Facilllles; approximately 200 progenies wal be atWled
tlurinq construction. Replacement of on-sole systems is not feasiY9e due to lack d availade specs. untavome sod
condalons end the presence of a hph water table. The contlttlonel use perms Is required because in soma areas -
construrtbn could occur In greenbelts with a slope of 40"b or greater.
The applicant considered INe potential s_.,,ng aaematNa. (A - El which are described in me application marshals.
i.. AltemetNIca 'Is preferred,based upon an evaluation of geotechnical,land use erW monetary impacts.
LOCATION: The Sierte Heights Neighbomnod iif bounded by Honey Creek on the west.Southeast 100m Street on the
north,Union Avenue on the east.and approximately S.E.104th Street on me south.
SITE AREA BUILDING AREA(gross):
-MPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFO MATZO
IMPACT INFECTNECESSAPY
1. Earth
L Air
..•. 3. Water-
4 Plants -
S. A.nimais
- - - - 0. Energy&Natural Resources
7. Environmental Health
8. Land&Shoreline Use
9. Housing
10, Aesthetics
11, Light&Glare-__
12. Recreation
13. Historic 6 CWtural Preservation-
14. Transportation '-
15. Public Services-
18, Utilities
Y .y r ni '4k i_�t�y ti wr ,-;r,# 114. 1i't 7
y
+ SIERRA HEIGHTS SANITARY-SEWER COL CUIECF-02tr N CONVEYANCE FACILITIES _
FFpruW a,teD2 .
REVIEWING DEPARTMENT/DIVISION:
i+ COMMENTS:
y
, y
I
We have reviewed this application with particular attention to those areas in which we have expense and have
identified areas of probable Impact or areas where additional information is needed to PrOWY assess this
proposal.
irLts�� `Z�
Signature of Dliactor or AuthonZSC Representative Date
J
_.Y
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
No.
APPLICATION NO(S).: CUtECF-020-92 Time Chargeable For
PROPONENT: City of Renton This Review hr5.
PROJSCT TT E: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities
BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Renton, is seeking environmental review and a
land use permit (conditional use permit) to construct the Sierra Heights Sanitary Sewer Collection and Conveyance 1
Facilities. These facNi[ies are intended to serve homes in the portion of the Sierra Heights Neighborhood located within City
of Renton boundaries. These properties are currently served by failing-septic systems(the area to be served by the system
has been designated as an area of'sevwe heai•h hazard'by the Washington State Department of Health).
Approximately 65 properties will be served by the Sierra Heights Facilities: approximately 2CO properties will be affected
during construction. Replacement of on-sae systems is not feasible due to lack of available space. unfavorable soil
conditions and the presence of a high water table. The conditional u.-e permit is requlrod becac;e In some areas
construction could occur in greenbelts with a slope of 40%or greater.
The applicant considered five potential sewenng alternatives (A � E) which are described in the application materials.
AltematNe'C'Is preferred,based upon an evaluation of geotechnicai,land use and monetary impacts
LOCATION: The Sierra Heights ^'eighbomood is bounded by Honey Creak nn 'he
west,Southeast I00th SI'est on the nodh,Union Avenue on the east.and approximately S.E. 134th Strer'on the soi ah.
r 70: I
PUBLIC WORKS DIVISION SCHEDULED M DATE: 02/26/92
ENGINEERING SECTION
I
TRAFFIC ENG.SECTION
UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
1 POLICE DEPARTMENT
DEVELOPMENT SERVICES DIVISION
CONSTRUCTION FIELD SERVICES
DEVELOPMENT PLANNING
PLANNING&TECHNICAL SERVICES
PARKS AND RECREATION DIVISION
If _OTHERS:
COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN V.RITNG. PLEASE
PROVIDE COMMENTS TO THE PLANNING DIVISION By S:OO P.M.ON FEBRUARY 19, 1992.
�w
J
✓ice. 775
LL�APPROVED WITH CONDMONS
>� 144e,
d:-
SIGNATURE OF
L
r
!/ �I
.- • . . REPRESENTATIVE
PSI
{k
'.7 ! III• ` i
lmwo'A"
•` � tiny. ice .
0
DEPARTMEN '..� PLANNING/BUILDING/F_SIC WORKS
ENV;RONMENTAL CHECKLIST REVIEW SHEET
—
i REVIEWING DEPARTMENT ��J'�-3
r DATE CIRCULATED: 02/05/92 � -• ;
;COMMENTS DUE: 02�19�82
!APPLICATION NO(S): CU;ECF-020-92 i
j ?ARKS PROJECT WORK ORDER
T�, No.
PRO.ONENT: City of Renton j rF'�
ablip For
Pi TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities Time�'r 66.r..
BRIEF DESCRIPTION OF PROJECT The applicant,the City of Renton, is seeking environmmer re a-05ef
}. Penns(conditional use permit)to construct the Sierra Heights Sanitary Sewer Collectlnc and Com•4ydnce Facilities. These
+ facilities are intended to serve homes in the portion of the Sierra Heights Neighborhood located within City of Remon
boundaries. These properties are currently served by fading septic systems(the a•ea to be served by tha system has been
designated as an area of'severe health hazard'b, the Washington State Department of Health).
I Approdma[ely 65 properties will be served by the Sierra Heights Facilities; P,Jproxlmatety 200 properties will be affected
§, dung construction. Replacement of on-sde systems is not feasible du% to lack of available space, unfavorable soil
+ conditions and the presence of a high water table. The conditional use permit is required because in some ,.reds
construction could occur in greenaelts with a slope of 40%or greater.
The applicam considered ive potential sewering altemetf�es (A - E) which are described in the application materials.
Altematve'C'Is preferred,based upon an evaluation of geotechnical,land use and monetary impacts.
LOCATION: The Sierra Heights Neighborhood is bounded by Honey Creek on the west,Southeast tooth Street on the
north,Union Avenue on the east,and approximately S.E. 104th Street on the south.
SITE AREA: BUILDING AREA(gross):
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMA'ION
IMPACT IMPACT NECESSARY
1. Earth
2. Air
3. Water
4. Plants
S. Animals
6. Energy&Natural Resources
7. Environmental Health
8. Lard&Shoreline Use
9. Housin
10. Aesthetics
11. Light&Glare._
12- Recreation
13, Historic&Cultural Preservation
14, Transportation__y ..
15. Public Services
16, Utilities
J
SIERRA HEIGHTS SANITARY SEWER COL OWCOMMANCE r4CIlITIES CUACF-0iM '
ROrany 41OU "�
r.a x ,
REVIEWING DEPARTMENT/DIVISION:
OOMMENi S:
-y�r
le
e ���lr r �&'-1'
sQl c'E[-rn.0�i� �2(rs-t.
I
vtic�: b� „¢.,•r..c�.E.514..,�.L :E..✓� �C ryrstt.�en.caK`•C � y ' r-V C o ( hc t M F'ssi`rc.Gl.-lc�l
We have reviewed this appiicatlon with particular attention to those areas in which we have expertise and have
Identitad areas of probable impact or areas where additional information is needed to properly assess this
proposal.
re of Director ur AUlhor¢ed Representative Data
4
ry
" DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
€ DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
1 APPLICATION NO(S).: CU;ECF-020 92 No. S
PROPONENT: Time Chargeable FOf
City of Renton
This Review
f.. hrs,PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Faculties
- BRIEF DESCRIPTION OF PROJECT:
'�. land use permit (conditional use The applicant, the City of Renton, is seeking environmental review and a
permit) 10 construct the Sierra Heights Sanitary Sewer Collection and Conveyance
of Renton Facilities. These facilftles are intended to serve homes In the portion of the Sierra Heights Neighborhood located within City
ng
has been desig boundaries.
en areaew roff*severe rheal h currently
azard'by the Washi Septic ngton State Department(the a oto be Health).served
by the system
Apprc:,jmtely 65 properties will be served by the Sierra Heights Facilities; approximately 200 properties will be affected _
during construaiom Replacement of on-sfte systems is not feasible due to lack of available space, unfavorable sol
condft.ons and the presence of a high water table. The conditional use permit is regJired because in some arms
construction could occur in greenbelts with a slope of 40%or greater,
i
y... The applicant considered five potentW sewering alternatives (A . E) which are described in the application materials.
Alternative'C'is preferred,based upon an evaluation of geotechnical.land use and monetary impacts
LOCATION The Sierra Heights Neighborhood is bounded by Honey Creak on the
west.Southeast 100th Street on the north,Union Avenue on the east,and approximately S.E. 104th Street on the south_
TO:
PUBLIC WORKS DIVISION SCHEDULED
E6.DATE: 02/26/92
__ENGINEERING SECTION
—TRAFFIC ENG.SECTION
__UTILITIES ENG.SECTION
__RAE PREVENTION BUREAU
__POU'CE DEPARTMENT
DEVELOPMENT SERVICES DIVISION
__CONSTRUCTION FIELD SERVICES
__DEVELOPMENT PLANNING
__PILJMNING&TECHNICAL SERVICES
PARKS AND RECREATION DIVISION
_—OTHERS:
COMMENTS OR SUGGESTIONS REGARDING THIS APPL-CATION SHOULD BE PROVIDED IN WRITING. PLEASE
PROVIDE COMMENTS TO THE PLANNING DIVISION BY 5.00 P.M.ON FEBRUARY 19, 1992.
1
...�
SIERRA HEIGHTS SMN MY SE F ?qgCTION CE FACl R ES CUIECF-0 n
FWm S.IW2 P�pA2
REVIEWING DEPARTMENT/DIVISION i
_APPROVED PPROVED WITH CINDITIONS NOT APPROVED
^AC_� � DATE:
SI TURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE
a..rr
Ev.o,c
1
1
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
i
DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
No. 415 095
APPLICATION NO(S).: CU;ECF-020-92 Time Chargeable For
PROPONENT: City of Renton This Review hrs.
PROJECT TITLE: Siena Heights Sanitary Sewer Collection and Comeyance Facilities
f
BRIEF DESCRIPTION OF PROJECT: The applicant, the City of Ramon, is seeking environmental review and a
land use perms (conditional use permit) to construct the Slsna Heights Sanitary Sewer Collection and Conveyance
Facilfties. These facilities are intended to serve homes in the portion of the Sierra Heights Neighborhood located within City
rd Renton boundaries These properties are currently served by`piling septic systems(the area to be served by the system
has been designated as an area of'severe health hazard'by the Washington State Department of Health).
4p
Approximately 65 properties will be served by the Sierra Heights Facilities; approximately 200 properties will be affected
during construction. Replacement of on-site systems is not feasible due to lack of available space, unfavorable soil
fi conditions and the presence of a high water table. The conditional use perm¢ is required because in some areas
y construction could occur in greenbelts with a slope of a0%or greater.
The applicant considered INe potential sewering alternatives (A - E) which are described in the application materials.
Altema[Ne'C"is preferred,based upon an evalua ion of gtgtech, •al,land use and monetary impacts.
LOCATION: The S:?rra Heights Neighborhood ;a bounded by Honey Creek on trig
west,Southeast IOUth Street on the north.Union Avenue on the essi,and approximately S.E. - Street or:the south.
4 TO:
4
R PUBLIC WORKS DIVISION SCHEDULED�f DATE. 02;26/92
ENGINEERING SECTION
TRAFFIC ENG.SECTION
UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
POUCE DEPARTMENT
DEVELOPMENT SERVICES DIVISION
_CONSTRUCTICN FIELD SERVICES L
DEVELOPMENT PLANNING 7✓d s-Er,
PLANNING&TECHNICAL SERVICES
PARKS AND RECREATION DIVISION
OTHERS:
' COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE
PROVIDE COMMENTS TO THE PLANNING DIVISION RV S:Oo P.M.ON FEBRUARY 19,1991
ti.
SIERRA HEIGHTS UNITMY SE F ^IECFIGH ,.'L�ACIUTIlS CU:ECRo26Y2
F�"5.ISE2 Ppi2 '
REVIEWING DEPARTMENT/DIVISION:
G' APPROV'I APPROVED WIT` 'k%NDMONS _NOT APPROVED
J
/":)+.Sj'o+ '�17�c:L� �H'l�'c�L•.
DATE: %
SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE
IIry m�
i.rw
his ,yr_,
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11.7
l 6r s
F
6
DEPARTMEN S PLANNING/BUILDING/F IC WORKS
ENVIRONMENTAL CHECKLIST REVIEW SHEET
REVIEWING DEPARTMENT: Fbllce
1 e. DATE CIRCULATED: 02,105(92 COMMENTS DUE: 02/19/92
PROJECT WORK ORDER
APPLICATION NO(S): CU;ECF-020-92 Nim
PROPONENT: City of Renton
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities TN Ciwry�able For
BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Renton, is seeking envirorm er
'a re
permit(conditional u:e permit)to construct the Sierra Heights Sanitary Sewer Collection end Comevance Facilities. These
facilities are mended to serve homes in the portion of the Sierra Heights Neighborhood located rvHhin City of Renton
boundaries. These properties are currently served by failing septic systems(the area to be served by the system has been
deslgneted as an area of'savere heaith hazard'by the Washington State Department of HeaIM).
Approximately 65 properties will be served by the Slarra Heights Facilities; approximately 200 properties will be affected
during construction. Replacement of on-site systems Is not feasible due to lack of available space. uirfavorable soil
conditions and the presence of a high water table. The conditional use parmit Is required because in some areas
construction could occur in greenbelts with a slope of Q%or greater.
The applicant considered five potential sewering alternatives (A - E) which are described in the application materials.
Aitemativii Is prefemed,based upon an evaluation of geotechninal,land use and monetary impacts.
LOCATION: The Siena Heights Neighborhood is bounded by Honey Creek on the west,Southeast 100th Street on the
north,Union Avenue on the east,and approximately S.E.loath Street on the south.
SITE AREA: BUILDING AREA(gross):
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
IMP IMPA IMPACT NECESSARY
I. Earth
2. Air
3. Water
4. Plants
5, Animals
6. Energy&Natural Resources
Environmental Health
8. land&Shoreline Use
9. Housin
10. Aesthetics
t I. Light&Glare
12. Recreation
13. Historic&Cultural Presawatlon
to. Trenspotalion
15. Public Services
-
16. Utilities
.,..ter+..:
J
SIEFIM HEIGHTS SAKI Any st n COL /CONVEYANCE FACILITIES �,_. CU:ECFd2aex
Feb ..ya,tem :
3q.2
REVIEWING DEPARTMENT/DMSM-
COMMENTS:
I{tS�A l l4Lfi Gbt TVj- 5f u,cv Wl K1�— blaAlQ� A�J
t,vxpaCf' Cv� ' POU-C, , ',avvL.,l. kkvieul.lr, -�u,
CLV -Wta�- WUl be, CUAttueA &Lav, C,
ct �usl2i tlaf�'wv °� 1 lw Sccue✓ �uU kit
Qv� uv>-ti(�ef
We have reviewed this application wOh panlcWar attention to those areas in which we have expertise and have
Idemaled areas of probable Impact or areas where additional information is needed to property assess this
proposal.
I Lbl L li ll4T ,
Bignatund AWtairlxad Representative Date
k l
DEPARTMEN. PLANNING/BUILDING/F LIC WORKS
ENVIRONMENTAL CHECKLIST REVIEW SHEET
REVIEWING DEPARTMENT: Wai]4— L(l tkc- eis
DATE CIRCULATED: 02/05/92 COMMENTS DUE: 02/19/92
- APPLICATION NO(S): CU;ECF[120 92 PROJECT WORK ORDER
NO
PROPONENT: Cary of Renton Time Char'geabW For
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities pp� hh..aa
BRIEF DESCRIPTION OF PROJECT: The applicant. the City of Renton, 's seeking environmen(aFrft&g sp
Permit(conditional use permit)to construct the Sierra Heights Sanitary Sewer Collection and Conveyance Facilities. These
facdlhes are Intended to serve homes In the portion of the Sierra Heights Neighborhood located within Cty of Renton
boundaries. These properties are currently served by failing septic systems(the area to be served by the system has been
designated as an area of'severe health hazard"by the Washington State Department of Health).
Approximately 65 properties will be served by the Sierra Heights Facilities; approximately 200 properties will be affected
during construction Replacement of on-site systems is not feasible due to lack Y available space, unfavorable soil
conditions and the presence of a high water table. The condelonal use permit �s required because in some areas s
construction could occur in greenbelts with a slope of 40%or greater.
The applicant considered five potential sewering alternatives (A - E) which are described in the application materials.
AltemaWe•C is preferred.based upon an evaluation of geotechnical,land use and monetary impacts.
LOCATION The Sierra Heights Neighborhood is bounded b^Honey Creek on the west,Southeast 100th Street on the
north.Union Avenue on the east•and approximately S.E.104th Street on the south.
SITE AREA: BUILDING AREA(gross): .y
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
PA IMPACT UF.QSSARY
1. Earthy
2. Air
3. Water
4. Plants
S. Animals
6. Energy&Natural Resources __�_ _
7. Environmental Health
9. Land&Shoreline Use
9. Housing j
10. Aesthetics
11. Light 6 Glare
12. Recreation I
13. Historic&Cultural Preservation I '
14. Transportatlun
15. Public Services
16. Utilities ' 4 7'�G IF
u
s
d
f
SIERRA NEI,NTS SAWrARY SEWER CC t^t1ON/CONYCYANCa`AClUTC3 n
F-duivry S.'W2 Y ` Cu:ECF42p
�V Pp.2
REV!EWING DEPARTMENT/DIVISION.
COMMENTS
We have revieved this application with particular attention to those ales, in which we have expertise and have
ideralfied areas 0. proeaae impaa w areas where additional inft) mUon is needeo to properly assess this
WoPoSEW
i
t r�i ctor __
ar'f,nature of Dlreaor or Authorize,RepresentatM1e Date
�^ Aw of ro
F '1
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
No. ! 5 095
APPLICATION NO(S).: CU;ECF-020-92 Time Chargeable For
PROPONENT: City of Renton This Review firs.
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities
BRIEF DESCRIPTION OF PROJECT. The applicant. the City of Renton, Is seeking environmental review and a
land use permit (conditional use permit) to construct the Sierra Heights Sanitary Sewer Collertion and Conveyance
Facilities. These facilities are intended to serve homes in the portion of the Sierra Heights Neighlgmood located within City
of Renton boundaries. These properties are currently served by failing septic systems(the arse to be served by the system
#y1.o has been designated as an area of*severe health hazard'by the Washington State Departme it of Health).
Approximately 65 properties will be served by the Sierra Heights Facilities; approximately 200 properties will be affected
Juring construction. Replacement of on-site systems is not feasible due to lack of available space, unfavorable soil
conditlons and the presence of a high water table. The conditional use permit is required because in some areas I
construction could occur in greenbelts with a slope rf 40%or greater.
The applicant considered We potential sewering alternatives (A - E) which are described In the application materials.
Atternative'C'is preferred,based upon an evaluation of geota'Inical.land use and monetary imoects.
j LOCATION: The Sierra Heights Neighborhood is bounded by Honey Creek on the
west,Southeast 10Prh Street on the north.Union Avenue on the east,and approximately S.E. 104th Street on the south.
i
TO.
PUBUC WORKS DIVISION SCHEDULED OQ DATE: 02/26/92
ENGINEERING SECTION P�R1V AEv�E�
—TRAFFIC ENG.SECTION
UTIUTIES ENG.SECTION
FIRE PREVENTION BUREAU
POUCE DEP,RTMENT
��•••• DEVELOPMENT SERVICES DIVISION
CONSTRUCTION FIELD SERVICES
DEVELOPMENT PLANNING
PLANNING&TECHNICAL SERVICES
_PARKS AND RECREATION DIVISION
OTHERS.
COMMENTS OR SUGGESTIONS REGARDING THIS .APPUCAT10N SHOULD BE PROVIDED IN WRITING. PLEASE
PROVIDE COMMENTS TO THE PLANNING DIVISION BY 5.00 P.M.ON FEBRUARY 19, 1992,
_I
i
S
i
_J
SIERRA HEIGHTS SARITAWI SEW P '�fmIOR/CCRV MCEFACIUTES _ CU:ECF0 W
FMI "S.IM PA .2
REVIEWING DEPARTMENT/DIVISION: P7/1/ 1
APPROVED ✓ APPROVED WITH CONDITIONS _NOT APPROVED
R(.A¢ (d�kDiuA\E SftNf'N ila,�oUEM r�c> Warn L'.'ASCA.N A.4iHP4CJC+IFIRS
H+ sitUA 'A66WM AREn.
II
/Y,. /992
SIGNATURE OF DIRECTOR ORAUTHORIZED REPRE WATWE
y„w mom
DEPARTMEN F PI-ANNING/BUILDING/1 SIC WORKS
ENVIRONMENTAL CHECKLIST REVIEW SHEET
1 REVIEWING DEPARTMENT: 5tO -li L.loa-v—
DATE CIRCULATED: 02/05/92 COM FNTs DUE. 02/19/92
PROJECT WORK ORDER
APPLICATION NO(S): CU;ECF-020-92 NO. '�5`0 F'a
PROPONENT: City of Renton --- (a
PROJECT TITLE: Slams Heights Sanitary Sewer Collection and Conveyance Facilities Tim@ Chargeable For
r' _ p� FR
7 BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Renton, is saeking environmo *erBRACrerttl-e��eed-dST
permit(conditional use permit)to construct the Sierra Heights Sanitary Sewer Collection and Conveyance Facilities. These
facil les are Intended to serve homes in the portion of the Sierra Heights Neighborhood located within City of Penton
boundaries. These properties are currently served by failing septic systems(the area to be served by the system has been
{ designated as an area of*severe health hazard'by the Washington State Department of Heath).
Approximateiv 65 pro-Mies wll be served by the Sierra Heights Facilities; approximately 200 properties will be affected
during construction. Replacement of on-sae systems is not feasible due to lack of available space, unfavorable soil
I� Conditions and the presence of a high water table. The conditional use permit is required because in some areas
construction could occur in greenbelts with a slope of 40%or greater.
The applicant considered We potential sewenng alrematNes (A - E) which are described In the spplication materWs.
AaematNe'C Is preferred,based upon an evaluation of geotachnical,lard use and monetary impacts.
LOCATION: The Slane Heights Neighborhood Is bounded by Honey Creek on the west.Southeast 100th Street on the
north,Union Avenue on the east,and apprommatety S.E-104th Street on the south.
SITE AREA: BUILDING AREA(gross):
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
IMPA IMPACTNECFWRY
1. Earth x
2. Air
3. Water
4. Plants_
5. Animals K
6. Energy&Nature Resources,
7. Environmental Health
8. Land S Shoreline Use
9. Housln
10. Aesthetics
11. Light d Glare_ _-
12. Recreation
13. Historic&Cultural Pre%ervation
14. Transportation
15. Public Services —
16, Utilities
r
51FAM"EIGHTS SAHMARY SEWER Cot �)ON/CONYEYANCE FACIUIIES CU�ECFd=0-e3
ftb u S im P4.2
REVIEWING DEPARTMENT/DIVISION: S7-94 kTXr1 Y- UY7�/Z'j�
COMMENTS:
We have reviewed this application with particular attention to those areas in which we have expertise and have
identified areas of probable impact or areas where add honal information is needed to property assess this
propo ',
S tum of Dire or tx d Representative Date
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
DEVELOPMENT APPLICATION HEVIEW SHEET
PROJECT WORK ORDER
No. 095
' CU:ECFd20-92
APPLICATION NO(S).: Time Chargeable For
PROPONENT'
City of Renton This Review hrs.
PROJECT TITLE: Slerra Heights Sanitary Sewer Collection and Conveyance Facilhies
BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Ramon. is seeking environmental review and a
land use permit (curidrtWnal use permit) to construct the Sierra Heights Sanitary r Collection and Conveyance
Sewer
intended to serve hoes in the portion of the SiamHeigms iVeighborhood l
Facilities.s. Those facilities are m properties are currently serve ocated within City
des. These d by tailing septic systems ea(the arm to be served by that system
of Ramon These
has been designated as an area c:*severe health hazard'by the Washington State Department of Health).
Approximately 65 properties will be served by the Sierra Heights Facilhles'. apProxirrlately 200 properties will be allected
during construction. Replacement of on-stte systems is not feasible due to Iramit is required becauseck available specs u n�some ar soil
eas
condhions and the presence of a high water table. The conditional use pe
construction could occur in greenbelts with a slope of 40%or greaten
The applicant considered Me potential sewedng alternatNes (A - E) +,hich are described In the application materela
Alterrative'C'is preferred,based upon an evaivatlon of gaotechnical.lard use and monetary impacts.
LOCATION: The SierraHeights Neighborhood is bounded by Honey Creek on the
9
� watatt.Southeast i OOth Street on the north,Union Avenue on the east,and eporoximately S.E. t Obth Street on the sotrth.
TO:
�PUBLIC WORKS DIVISION SCHEDULED EBQ DATE: 02/26/92
ENGINEERING SECTION
i _TRAFFIC ENG.SECTION
_Ze•UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
_POLICE DEPARTMENT
DEVE_OPMENT SERVICES DIVISION
_CONSTRUCTION FIELD SERVICES
_DEVELOPMENT PLANNING
_PLANNING N TECHNICAL SERVICES
PARKS AND RECREATION DIVISION
OTHERS:
PROVIDECOMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED
COMMENTS TO THE PLANNING DIVISION BY 5,00 P.M ON FEB UARY 19, 1992,IN WRITING. PLEASE
SIERRA NFIONT!SMNf Y SE F - C N ONYFYANCF F LLITIF! CU;ECFd "
Pps:
FNuuuy S,1Gl3
REVIEWING DEPARTMENT/DIVISION
APPROVED ,..a _APPROVED WITH CONDITIONS cNOT APPROVED
POQ,p pT{I l� 3]J iNYrTrY4��/ c Q^- F / N ✓r
Oy 61'r71 eooar- 4-2Z/trti ✓V^j/ s na" vnc�
s'vttlwc- cyF2� S?-u l,.- fir GPI�.ati� 7r 7'YT �414
Pre StNas- 64v; &awl- T' 17w-
/QgLorryerro G-^..t rot+'+ru7Y�'� i3� Ca"Ivau✓ �c✓L
��/'G.4vSiaJ off- �r SHA's'f/g�� Gyv*sc- a-in+ G�z�
k�
DATE. ` 2
7AMRE7kMTbRpWAUTHOAIZED REPRESENTATIVE
I
. I
Y
k
'.tom... .
CRY OF RENTON
DEPARTMEN'. LANNING/BUILDING�F-_"?C WORKS RECEIVED
EN�VIROlNMELNTA_L CHECKLIST 9EVIEW$HEFT FEB 5 _r..I
REVIEWING DEPARTMENT: c4vlS vur-�' �c� u- :uIIIOCirp)pIS1pN
DATE CIRCULATED: 02/06/92 COMMENTS DUE: 02/19/92
PROWECT WORK ORDER
APPLICATION NO(S): CU:ECF-020-92 itkl 1�S 0 95
PROPONENT: City of Renton Time Chargeable For
PROJECT TITLE: Ste—Heights Sanitary Sewer Collectlon and Cor Yana Facilities
This
BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Remo Is seeking environmen re
perrnft(conditional use permit)to construct the Sierra Heights SaSIP-
nitary Sewer Collection anu Conveyance Facilities. These
facilit"are Intended to some homes in the portion of the Sierra Heigi as Neighborhood located within City of Renton
t boundaries. These properties are currently served by failing septic systems(the area to be served by the system has been i
designated as an area of'severe health hazard'by the Washingtoo State Department of Health).
Approximately 65 properties will be served by the Siena Heights Facilkle:, approximately 200 properties will he affected
during construction. Replacement of cn-sfte systems is not feasible due to lack of available space, unfavorable sod
" conditions and the presence of a high water table. The conditional use permit is required because in some areas
construction coWd occur in greenbelts wfth a slope of 40%or greater.
The applicant considered Me potential sewering altematNes (A - E) which are described in the application materials
NtematNe':;Is preferred.based upon an evaluation of geottichnical.land use and monetary impacts.
LOCATION: The Slerra Heights Neighborhood is bounded by Honey Creek on the west,Southeast Iboth Street on the, I
with.Union Avenue on the east,and approximately S.E.104th Street on the south.
SITE AREA BUILDING AREA(gross).
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
INFORMATION
MINOR MAJOR I
I
IMPACT
IMPACT NECESSARY
t. Earth
I
2, At
9. Water
4. Plants-
5 Animals___ I
6. Energy&Natural Resources_,
_. 7. Environmental Health
8. Land&Shoreline Use
9, Housin V
10. Aesthetics_
11. Light d Glare! -
12. Recreation
19. Historic&Cultural Preservation
14. Tmnsportatlon
15. Public Services
16, Lttflives
J
RA HEIGHTS SANRARY SEWER COL "QNLCOMMAWE FACILITIES
hbawv a Im ..✓ ►Wa I
REVIEWING DEPARTMENT/DIVISION:
COMMENTS: ¢,
i
I
I
We have reviewed this application with particular attention to those areas in wh ch we have expertise and have
identlfled arpe d probable impact or areas where addRbnal i"famration is needed to properiv assess this
proposw.
..ignaturs d DtraC=a Authored Representative Date
t
7
�f.�... _.-..aura` '... ... .. .......... ....�......�.:..-a..,. _'-�
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
No. �f.5 095
APPLICATION NO(S).: CU:ECF-020-92 Time Chargeable For
PROPONENT: City of Renton TFIs Review hrs.
i
PROJECT TITLE: Srna Heights Sanaary Sewer Collection arO Conveyance Facilities
BRIEF DESCRIPTION OF P90JECT: The applicant, the City of Renton, Is seek ,g environmental review and a
land use permit (conditional use permit) to construct the Elena Heights Sanitary Sewer Collection and Conveyance
Facilities. These facilities are intended to serve nomes In the portion of the Sierra Heights Neighborhood located within City
of Renton boundadv- These properties are currently served by Failing septic systems(the area to be served by the system
has been riesignateo.s a,area of•severe health hazard•by fire Wasningtcn State Department of health).
Approximately 65 properties will be 5y the Sierra Heights Facilities: approximately 200 properties will be af'ected
during construction. Replacement c ,ae systems is not feasible due to lack of available space. unfavorable sail
conditions and the presence of a high water abbe. The conditional use permit is required because in some areas
construction could occur in greenbelts with a slope or 40%or greater.
• AWr" The applicant considered five potential severing alternatives (A - E) which are described in the application materials.
Ahematt •C•Is preferred,based upon an evaluation of geotechnical,land use and monetary impacts.
LOCATION The Sierra Heights Neighborhood is bounded by Honey Creek on the
west.Southeast 100th Street on the north,Union Avenue on the east,and approximately S.E. 104th Street on the south.
TO:
I
_PUBLIC WORKS DIVISION SCHEDULED 0y DATE. 02,26/92
ENGINEERING SECTION
TRAFFIC ENG.SECTION
UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
POLICE DEPARTMENT
DEVELOPMENT SERVICES DIVISION
j
r _,,CONSTRUCTION FIELD SERVICES
OEVELOPMLI T PI ANNING
_PLANNING&TECHNIC' ;EHVICES
PARKS AND RECREATION DIVISION
OTHERS:
COMMENTS OR SUGGESTIONS REGARDIN,- THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE
PROVIDE COMMENTS TO THE PLANNING DNI JC"'8Y 5 00 P.M ON FEBR JARY 19,1992.
f
0 ON
J
00
i
f-[Rb'HEIGHTS SAWGIIY SEWER -jEnt!/CONYEYAHCl FACLLITIES _ CU'ECFd u
...uy 1.IM2 P.Q.2
REVIEWING DEPARTMENT/DIVISION
APPROVED APPROVED WITH CONDITIONS _NCT APPROVED
DATE:
SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE
MAIM
i
, 1
DEPARTMER. C>PLANNING/BUILDING�t IC WORKS
ENVIRONMENTAL CHECKLIST REVIEW SHEET
REVIEWING DEPARTMENT:
DATE CIRCULATED: 02/05/92 rC7 r, CCMMENTS DUE: 02/19/92 Cy
APPLICATION NO(S): CU;ECF-0 PROJECT WORK ORDER20-92 ,�•. �
PROPONENT: City of Renton' ';ti Et'CN rrov OE.Nm Chargeable
For
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities ?,gn p ,,
BRIEF DESCRIPTION OF PROJECT: The applicant,the City of Renton, is seeking"iro Is ref 1�'VIAre .rend-eased-e15s*'
permit(conditional use permit'to construct the Sierra Heights Sanitary Sewer Cdlecllbri'and Conveyance Facilities. There
facilities are intended to some homes In the portion of the Sierra Heights Neighborhood located within CM at Ramon
boundaries. These properties are currently served by failing septic systems(the arse to 6A served by the system has been
designated as an area of'severe health hazard'by the Washington State Department J7'W"th).
Approximately 65 properties will be served by the Sierra Heights Facilities; approximately 200 properties will be affected
during construction. Replacement of on-site systems Is not feasible due to lack of available space, unfavorable soil
conditions and the presence of a high water table. The conditional use permit Is required because in some areas
construction could occur in greenbelts with a slope of 40%or greater.
The applicant considered five potential sewering alternatives (A - E) which are described in the appll�ation materials.
Alternative'C'is preferred,based upon an evalua,ion of geolechnical,land use and monetary impacts.
LOCATION: The Sierra Heights Neighborhood Is bounded by Honey Creek on the west.Scutheasl 100th Street on the
north,Union Avenue on the east,and approximately S.E.104th Street on the south.
SITE AREA: BUILDING AREA(gross):
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
IMPACT IMPACT NECESSARY
1. Earth
2. Air
3. Water
4. Plants___
5. Animals _
6. Energy&Natural Resources
7. Environmental Health
S. Land&Shoreline Use
9. Housino _
10. Aesthetics _
11. Light&Glare
12. Recreation
13. Historic&Cultural Preservation
14. Transportation
15. Public Services
16. Utilities
�, '? ate. ..'ti• _.._.a_�• _ __ _.,._ T 4• _ __ _•• _ ___ r +��._...
SIEnRA NEIGNTS SANITMY SEWER COL f`jgM RVIYAN FAQ MD_____
FeGuyy S,I= ./—�—�OE —.—
h0�c
REVIEWING DEPARTMENT/DIVISION:
COMMENTS:,
'r/ �-cw,�r / /acwrM.Grtaac✓ ,elw ,tU�.�+.swleey Ce�xa�ce�
We have reviewed this application with particular aCention to those areas in which we have expertise and have
Identified areas of probable impact or areas where additional information is needed to properly assess th's
vymmv�yyrctmr Gr Au otnor¢ad Represantatrve Datd`'�f-��
V I,
wiwnre
Ww.'
DEPARTMENT OF p
LANNING/BUILDING/PUBLIC WORKS
DEVELOPIMENTAPPLICATION REVIEW SHEET
AFP(JCAnON NplSl.,
PROPONENT: CU;ECF.020-92 NO. 5�" K ORDER
PROJECT TITLE: city or Renton Time Char-geable tlr--
This Review
BRIEF DESCRIPTION Sierra Heights Sanitary
land OF PROJECT: ry Sewer Call
and
Facilities, TPhea (condhional The appllcant. the C Conveyance Facilities
ese fecllfhas use Permit) t0 construct the Slo
Of Renton boundaries. These 1p rwn to s orris in the of Renton. Is seekln room has been designated Parties are cue a Heights Sanitary Sew g envi ental review and 0
g contt.y SS boas an area tiessery a health hazard'
by the
septic SeOf a State HeigrnrtT e�boto m tl0n located within arid �ry
ADProri hazard'b tons tit ood I
Burin Parties will Washington State D of H.S setvod b i system
erra
condition d the Presence If ign wa Tyst mis Hot feasible due aPproxirtlataY200 °rt). acted
condi s ary theghts Facilities
motbnof a hi
occur in greenbelts wait a or Ada' The c o lack of P es will Ire aft oM@to Pace. untay.mbl
The aopllq,n( Permit is reQuir a soil
Altematkg'C is Considered Me potential ���%or greater. ed because in
Preferr SO, soma areas
ed,based upon 9 altematfves
LOCATION: an evaluation or 9eotnhnAcal a�wnich are tlescnbed in the west.Southecat 100th Street The
use and moneary impacts.aPPllwtlon materials.
eet on the north, Union Avenue on Sierra Heights NeighborhoW Is
TO: on the e ast.and"Oproximstely S Endpath S by Honey Cr ft
Street on the south
PUBLIC WORKS DIVISION
ENGINEERING SCHEDULED DATE SECTION 02/26/92
TRAFFIC ENG.SECTION
UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
POLICE DEPARTMENT
—�DEVELOPMENT SERVICES DIVISION
CONSTRUCTION FIELD SERVICES
DEVELOPMENT PLANNING
i LANNING 3 TECHNICAL SERV ;ES
PAWISS AND RECREATION DIVISION
�,.OTHERS: -
COMMENTS OF, _
PROVIDE COMMENrGGE5710NS RE
S TO THE PLANNING
THIS APPLICATION SHOO
CANNING DIVISION By 500 p M 0 SHOULD BE P
N FE_ 13_ RUARY R9 VIDED IN WPr;NG. PLEASE
1492. '
J
J
SIERRA NEIGH SANRARY SEWER( ON CONVEYANCE FACIU ES CU:ECF-02692
FMruAry 5.1992 --
REVIEWING DEPARTMENT,/DMSION: ZT .
_APPROVED APPROVED MH CONDITIONS _NOT APPROVED
h4a'IATIJRE,OF DIRE ORIED REPRESENTATIVE DATE.
R.a-,
DEPARTMEA.0 PLANNING/BUILDING/1 :. IC WORKS
ENVIRONMENTAL CHECKLIST REVIEW SHEET
REVIEWING DEPARTMENT: Sr—L W.r-
r DATE CIRCULATED: 02/05/92 COMMENTS DUE: 02/19/92
APPLICATION NO(S): CU;ECF4020-92 PROJECT WORK ORDER
PROPONENT: City of Renton No.
PROJECT TITLE: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities Time Chargeobb FoT
BRIEF DESCRIPTION OF PROJECT: The applicant, the City of Renton, is seeking enviroml, re �Permit(conditional use permit)to construct the Sierra Heights Sanaary Sewer Collection and Conveyance Facilities. These
facilities are :mended to serve homes in the portion of the Sierra Heights Neighborhood located within City of Remon
boundaries. Theta properties are currently served by railing septic systems(the area to be served by the system has been
designatec as an area of-severe health hazard'by the Washington State Department of Health).
Approximately 85 properties will be served by the Slena Heights Facilities: approximately 200 properties will be affected
during construction. Replacement of on-site systems is not feasible due to lack of available space, unfavorable sod Conditions and the presence of a high water table. The conditional use permit Is required because in some areas
construction could occur In greenbelts with a slope of 40%or greater.
The applicant considered five potential sewering alternatives (A - E) which are described in the application materials.
Alremative-C-is Prefered,based upon an evaluation of geotechnicaL land use and monetary impacts.
LOCATION: The Sierra Heights Neighborhood is bounded by Honey Creak on the west,Southeast I00th Street on the
north,Union Avenue cn the east,and approximately S.E.104th Street on the south.
SITE AREA: BUILDING AREA(grow
IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS: PROBABLE PROBABLE MORE
MINOR MAJOR INFORMATION
-IMPA IMPACT NECESSARY
1. Earth
2. Air
1 Water
4. Plants _ --
5 Animals
6. Energy&Natural Resources
Environmental Health
8. Land 8 Shoreline Use I "
9. Housing
10. Aesthetics
11. Light&Glare_
12. Aximillon
13. Hlaodc&Cultuml Preservation
14. Trancportatlon _
15. Public Sevices
14L Utilities
I
S
IERRAHEIGHTSRY SEWER CO ON CONVEYANCE FACIUTIE4 CU'EI:F-0I(FY.
P".a
ENT/DIVISION:
GInd— Gc��.
a
P
IT
i
Wa he"reviewed this application wrth particular attention to those areas in which we have expertise and have
idemiRed areas of procable impact or areas where additional Information is needed to property assess this
proposal.
�jec,rf � . tii 99?
Signature of Director or Authonzed Repcesemative Date
i.
J
1
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
DEVELOPMENT APPLICATION REVIEW SHEET
PROJECT WORK ORDER
No. 41:. 09
APPUCATION NO(S).'. CU:ECF-020-92 Time Chargeable For
PROPONENT: City of Renton This Review_ hrs.
PROJECT TITLE. Slams Heights Sanitary Sower Collection and Conveyance Facilies
BRIEF DESCRIPTION OF PROJECT: The applicant, the City of Renton, is seeking environments] review and a
land use permit (conditional use permit) to construct the Slam Heights Sanitary Sewer Collection and Conveyance
Facilities. These facilities are intended to serve homes in the portion of the Sierra Hclghts Neighborhood located within City
of Renton boundaries. Thew properties are currently served by fading septic systems(the area to be served by the system
has been designated as an area of'severe heeah hazard'by the Washington State Department of Health).
Approximately 65 properties will be served by the Sierra Heights Facgrtles; approximately 200 properties will be affected
during construction. Replacement of on-sae systems is not feasible due to lack of available space, unfavorable soil
conditions and the presence of a high water table. The conditional use permit Is required because in some areas
construction could occur in greenbelts with a slope of 40%or greater.
The applicant considered Me potential severing alternatives (A - E) which are described in the application materials.
Altemative'C'Is prefered.based upon an evaluation of gemechnical,'arid use and monetary impacts.
LOCATION: The Sierra Heights Neighborhood Is bounded by Honey Creek in the
west.Southe,-st 100th Street on the north.Union Avenue on the east,and approximately S.E. 104th Street on the south.
TO:
PUBLIC WORKS DIVISION SCHEDULED I=DATE: 02/26/92
_ENGINEERING SECTION , �1jE�
TRAFFIC ENG.SECTION /"fJ�y )J
UTILITIES ENG.SECTION
FIRE PREVENTION BUREAU
POLICE DEPARTMENT
DEVELOPMENT SERVICES DIVISION
CONSTRUCTION FIELD SERVICES
DEVELOPMENT PLANNING
PLANNING&TECHNICAL SERVICES
PARKS AND RECREATION DIVISION
OTHERS:
COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE
PROVIDE COMMENTS TO THE PLANNING DIVISION BY 5.00 P.M.ON FEBRUARY 19, 1992.
.w t
Fill
J
SIERRA HEIGHTS SANITARY SMF -'%EC ON/COHYEYANCE FACII IES _1.1 CO'ECPd1012
F bDm S.1SB2 ..F P g.2 ,
REVIEWING DEPARTMENT/DIVIS;ON:
APPROVED APPROVED WITH CONDITIONS NOT APPROVED
l
i
i
1
DATE: V �-!i� 919 Z^'
SIGNATURE OF DIRECTOR OR AUTHOR_ ED REPRESENTATIVE
aM++ FEv.aI�
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STUDY AREA MAP
FIGURE t
CITY OF RENTON
SFMA HE ME
WASTCYI�7�UEC—FA3 M
aratm u.F //����d���.� LoC:n 1� NONITY NIO STIOY N1EA NN•f
CON3UltGFItS
o-.w
■ol1111� ■■n�
IIC
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STATE OF WA5IWGTON
DEPARTMENT OF WILDLIFE
Tel 1�061 "c.17!I
16018 Mill Creek Blvd.. Mill Creek. WA 9gOC
.
J�I
}`
i march 11, 1992 �
\,�� IR �1 "�'g� ? '•tip
Environmental Review Committee OF k
c!o Don Erickson, Secretary C1� ettttB OAP "
Department of planning
Ergu e
200 Hill Avenue South
Rent,,, Washington 98055
RE; Cy; ECF-020-92i SIERRA HEIGHTS SANITARY SEWER COLLECTION AHD
CONVEYANCE FACILITIES; DNS
Dear Mr- Erickson:
Department of Wildlife Habitat Management staffents' have primaryd the
concern
above document and have the following water comments. Our p
is for the potential l impacoss tswildlife rhab ltaty caused ad iby construct'"
Honey Creek and
on in
disturbances. To uth rconstructionavoid
the
POt6V
trench dames tome ntrol the
the creek, we support e
flow of ground water.
Prompt revegetation of exposed soils and pted rbedhabitat
areas should be
carried out in order co restore the disrupted minimize
as quickly as
possible. Timely revegetation will also help minimize the potential
I
s sel
for poet-construction erosion problems. f an alternative S
Hydraulic Projectt ed
requiring work to be done to or in Honey Creekor Wildlife will be
Approval from the Department of Fisheries
required.
///S/jln/cerely, V
yony ppe rmam
Habitat Siolog ist
TO:ks
cc: Habitat, Olympia
lla eTRO
MunkValey of Metropol'itan Seattle
Exchange Building • 821 Second Ave. • Seattle,WA 98104-1598
March 13, 1992
City of Renton 7 _.
�• Environmental Review Committee
c/o Don Erickson, Secretary -
Development Planning Section
Department of Planning/Building/Public Works
200 Mill Avenue South
Renton, Washington 98055
Determination of Nonsignificance
;t File No.• CD•ECF-020-92 aigicra Heights Sanitary
Dear Review Committee:
Metro staff has reviewed this proposal and anticipates no significant
impacts to Metro's wastewater facilities or public transportation
services. However, we have the following comments regarding water
quality.
To minimize water quality impacts during construction, we recommend'
the following mitigation measures be required of the developer:
- Avoid disturbing surrounding areas more than necessary. k�
- If possible, avoid exposing soils during periods that have the !i
highest potential for erosive rainfall. f
- Cover, secure and/or berm all stockpiled material.
- Provide geotextile siltation fencing along onsite surface waters. C;
- Develop and implement a regular maintenance schedule for
structural controls, eq. , filter fabric fences and stockpiled
covers. �?
Handle petroleum products and other construction materials with �•,
care to prevent their entry to ground and surface waters. j
Please call Barbara Badger, Metro Water Resources, at 684-1231 with �I
any questions regarding water quality. Y
Thank you for the opportunity to review and comment.
Sincerely,
Petrina Gee, Environmental Planner
Environmental Compliance
and Right-of Way Division
pgl236
cc Barb Badger, Metro
r
f
a
i
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CITY OF RENTON _ram
MEMORANDUM
DATE. February 28,1992
1 O- / Michael Benoit Utility Systems ENtpN
Flit Don Erickson,Secretary
,. Environmenral Review Committee C,\n tnee01A
r SUBJECT'. Slema Heights Sanitary Sewer Collection and Comeysnce Facilities
CU;ECF-020-92
1 am writing this menw on be,alf of the Environmental Renew Committee and would like to Inform you that they have
completed their review of the environmental impach. of the above-referenced project. The Committee. on February 26.
1992, decided that the Sierra Heights Sanitary Sewer Collection and Conveyance Facilities project wit be Issued a
Determination of Non-Significance.
The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse
impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21 C.D30(2)(r). This
decision was made by the Environmental +view Committee under the authority of Section 4-6-6, Renton Municipal Code.
after review of a completed environmental checklist and other Information, on tie with the load agency. This information is
available to the patlfic on reque4t.
This Determination of Non-Significance is issued under WAC 197-11-340. Because other agencies of jurisdiction may be
involved,we will riot be able to act on this proposal for fifteen (15) days from March 2. 1992. During this period, any
Interested party may subrr written appeals on this decision:these must be received by 5:00 p.m., March 17, 1992,to the
City of Renton Hearing Examinee
If you have any questions or desire clarification of the above,please cal!Lenora Blauman or me at 235-2550.
Advisory Note M1: The Determination of Non-Significance is issued bait d upon apprrwed plans and specifications which
mitigate identified environmental impacts through the following actb:a co be undertaken In conjunction with the
development of the service system.
1. The applicant shall submit to the City of Renton,prior to the precc,istruction conference,an erosion control plan for
review and approval. The pan will be based on the King County Surface Water Design Manual,as adopted by the
City of Renton(Special Provisions 1-07.151.
2. The applicant shall restore the flatter surfaces shall include hyciroseeding (Approved Plans - Detail B61. The
hydroseed mix will be prepared by a reputable seed supplier within the standards,at by the constriction contract sn
- . as approved by the Planning,Building!PuUic Works Department iSpecal Provisions 8-01.3(4)A]. All pleas. - -
shrubs,and trees within the work area shall be restored to the satisfaction of the property owners directly following j
installation of the systems. [Special Prrnislons 1-07.161.
3. The applicant shall undertake restoration on the steeply sloped areas,including all items identified above plus the
Installation of slaked excelsior matting (Approved Plans. Note 9 on Sheet 71. All work, including restoration, is
warranted for one year after acceptance[Construction Contract Item Band Special Provisions 1-09.10(G)]
4. The applicant shall maintain two lanes of traffic on Union Avenue NE at all limes. One v.. v traffic at a minimum,will
be maintained between the hours of 8.30 am and 3'.30 pm on all other streets affecteJ by the project. Outside
these working hours,two lanes of traffic must be maintained [Specal Provisions 1-07.23(1)), A traffic control pan
shall be approved by the City Traffic Engineer(Special Provisions 1.04.13).
Advisory Note N2: the applicant is advised that a Conditional L' ermft must be obtained from the City for all work in
greenbelt are.s and all areas which have a slope of 40%or greater.
Advisory Note N3: The applicant Is advised that an HPA permit from the Department of Fisheies is required for all work
waterward of the ordirary high water line or edge of the bank of Honey Creek. King County permits wit be necessary for
any work within unincorporated King County.
DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS
ENVIRONMENTAL REVIEW COMMITTEE
STAFF REPORT
FEBRUARY 26,1992
.. A. BACKGROUND:
APPLICANT: Chy of Renton-Utility Systems
t. PROJECT: Sierra Heights Sanitary Sewer Collection and Conveyance Facilities
ENVIRONMENTAL CHECKUSL ECF,CU-020-92
DESCRIPTION OF PROPOSAL: The applicant,the City of Renton,is seeking environmental review and a
land uae permit (conditional use perme.) to construct the Slena Heights Saniary Sewe• Collection and
Conveyance Facilities.
LOCATION OF PROPOSAL. The Sierra Heights Nelghticr000d is bounded by Honey Creek on the .
went,Southeast I00th Street on:he north,Union Avenue on the east,and approximately S.E. I04th Street on the
south.
ISSUES: Earth, Natural Environment. Land Use, Envivoi.nental Health,
•- Tensportation,Publin Services,Pudic ties
RECOMMENDATIONS: — PeterMnation of NonSionfcance(page 2)
RI ice_ J � ' •+\� �
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t
PROJECT LOCATION
< ➢ e.. n I v r.�'� ' d'.
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FrrauW n.Ind Papr 2
B. RECOMMENDATIONS:
E} Staff recommend that the ERC Issue a DNS with the following advisory notes:
1.
Advisory gate de The Determination
mental d Nets throe h the
Is Issued, action upon approved penis and spejunction wth
which mitigate identified environmental Impacts through the following actions to be undertaken in conjunction with
the development of the service system.
T
1 The applicant Snell submit to the City Of Renton,prior to the pretonstrttctkxt Conference,an erosion control
` plan for review and approval. The plan will be based on the King County Surface Watte Design Manual,as
adopted by the City of Renton(Special Provisions 1-07.15I.
2 The applicant shall restore the Hatter surfaces shall include hydroseeding (Approved Plans - Doted B6I.
The hydroseed mix will be prepared by a reputable seed supplier wahin the standards set by the
construction contract as approved by the Planning/euilding/Pudie Works Department[Specal Provisions
6-01.3(4)AI. All plants, shrubs, and Ireeti within the work area shall be restored to the satisfaction of the
property owners directly following installation of the systems.[Special Provisions 1-07.161.
3 The applicant shall undertake restoration on the steeply sloped areas, including all darns identified above
plus the Installation of slaked excelsior matting(Approved Plans, Note 9 on Sheet 71 All work, including
restoration. is warranted for one year after acceptance (Construction Coierad Item 6 and Special
Provisions 1-09.10(H)]_ ,
4 The applicant shall maintain two lanes of traffic on Union Avenue NE at all times. One way traffic,at a
minimum,will be maintained between the hoes of R.dO am and 3.30 pm on all other streets affected by the
project. Outside these working huurs. two lanes of traffic must be maintained !Special Provisions 1-
07.23(1)1. A traffic control plan shall be sply the City Traffic Engineer[Special Provisions 1-04.13].
Advisory Note M2: The applicant is advised that. Use permit must be obtained from it*City for all
work in greenbelt areas and all areas which have a sb,, or greater.
Advisory Nob 413: The applicant is advised that an HPA permit from the Department of Fisheries Is required for all
work waterward of the ordinary high water line or edge of the bank,ti Heney Creak.
III C. II SSUE$:
BACKGROUND
The applicant,the City of Renton,is seeking environmental review and a land use permit(conditional use permit)to
construct the Sierra Heights Sanitary Sewer Collection and Conveyance Facilities These facilities are intended to
serve hones In the portion of the Sierra Heights Neighborhood located within City boundaries,in the northeastern
section of Renton. These properties ere currently served by falling septic systems (the area to be served by the
new,system,which now has felled septic systems,has been designated as an area of'severe health hazard'by the
Washington State Department of health,eke remainder of the Sierra Heights area,designated as an'arm of health
concern,'has not annexed to the City and will not be served by this project. Replacement of on-site systems is not
feasible due to lark of avallable space,unfavorable sod conditions and the presence of a high water table.
The;fey conducted erivironmental/lend use review for five rxxental system alternatives(A E)which are described
in the application materials. Alternative'C'(described below) leis been selected as the preierral option because
land us.•and gedechnical Impacts are limited. The financial impact is also less with this alternative,because costs
are lower,ant funds are available from DOE to assist with construction
Approximately 65 homes wdl be connected as part of this project:27 additional homes(outsde City limits)will have
stubs for future connection. Up toll4 more properties coo old ultimately be served through extensions of this new _
sewer Approximately 200 properties will be affected during construction under Alternative C. With this altema ra,
the planted eight-inch conveyance system is proposed to be located along a condo which is genarally bounded
by S.E. 100th Street on the north,Union Avenue or.the east, S.E. 104th Street on the south and Renton City limits
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' GWAFA"gWA FEV EN COMMRTEE STR)'NEPORT_ ..,�—..ya r+Eam't a�NR'iiy COILECT1011/CONVEYFNCE FACAJfIE$
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on the wit. A 5374 floater toot portion of the development site is to be installed on upland teR9ln ranging from no
dope to a railing slope of leas than 25 pa care(4873 lkeel feet 0'this portion of the project Is in improved right-of-
way). A 218 lineal toot portion is planrwl to be installed within E groanbell In Horsy Creek Canyon, sloped at 40
percent or greater(between/24th Avenue S.E and 125th Avenue S.E.,a extended and south of S.E. 104th Street),
and than to cone ict with Hooey Crook,no Creek crosdng will be required with this alignment.
A condtional use permit is required!or construction occurring In the doped areas. An HPA permit Is required from
the Department of Fisheries Is require for all work waterward of the ordinary high water line or edge of the bank of I
Honey Creek.
AM
I Q. ENVIRONMENTAL ELEMENTS
e, 1 Environmental Health
Impacts'. The planned sewer lines are Intended to replace failing septic:systems In the project area The I
_ system should resolve a serious pudic heath concern ark;irg from the lack of a�ailade sewer services and
from potential Impacts to Honey Creek and to the undenying water table which Is hydrologically connected
to the City Aquifer Protection Area (Zone II). Replacement septic systems are nit considered viablo,
- because that aquifer is senstNe to contamination in the suers ofseptic`allure.
Mtinatlon Moasures. Norte required
2. Earth/Natural Emironment
Impscls:The prof seal sewer system is planned 10 be installed in improved rightof-way oral In easements
across unimprovea property (719 lineal feen. including upland areas and a doped area In Haney Creek
Ravine. Upland area dopes range from flat/gentle to railing. underlying upland soils are prl,nariy glacial
tit. In the environmental ane:ysis provided by Brown&Caldwell,these soils are rewrted to be suitable 10
support the planned development. Honey Creek and as associated steep ravine lies In the wed and
southwest portion of the project area, the conveyance pipeline is planned 10 be routed dawn the steep
dopes(inclined 40 percent - 100 percent)to the existing sewer Interceptor line adjacent to Honey Creek.
The line will not enter the Creek
Excavation of sot to permit underground pipe Installation could result in sot erosion, changes In storm
water runoff patterns/volume,airborne dust.and debris. These Impacts are Of particular cencem in those
areas of the project which are environmentally sensi n'a (e g. steep dopes, greenbet, Honey Creek
watercourse) Tire construction nanagemant plan proposed by the applicant, including erosion control,
storm water confroo, on-site montoring, and dust contra systems should address generally anticipated
construction-related Impacts. The applicant has also provided a program (construction plan and an
agreement)to address potential Impacts to the doped areas,this program includes elements tor protecting
slope configuration, and existing vegetation and for in-kind replacement of any plantings which must be
removed to install the sewer,replacement plantings would be moni o-ed for one year to ensure that they
are well-established. (Also see'Rmrwtion')
Finuvslly,proposed construction and operating plans,as well as the standards mandated under the required
HPA,are intended to protect the Iregray of adjacent Honey Creek(snd the water habitat).
The addition of new sewer lines.to operate in place of falling septic tanks, is viewed as a means to protect
the underlying terrain.
MMloation Measures. None required.
3. Land Use/Housing
"¢ k,nitM. The Installation of this new sewer system is likely to have only modest impacts upon land use
W pie the Installation of infrastructure Improvements can potentially support new, development, no
substantial modifications to development in Sierra Heights are expected as .he area is essentially fully
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ENWRONMEWAL Fe WCLA MTTEE STOWM SIENPA HVOWS SWITMy SEWER COLLECTION/CONVEY44M FNCLITM
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developed with SMgyefamily dwellings, the maximum use permitted under the Lard Use Zoning Map and
the Comprehensive Plan.
The proposed improvement plan does not p�ovlds sewer service to approximately 141 largely developed
properties which are in the Sierra Heights area,but outside of the area dew aced as a health hazard and/or
are ouasde of City limits. The planned system will provide opponunitles for those properties to be
connected to the sewer system at a future it". These areas,as with the proposed s ioe area.Include
developed(./70%)and vacant 1,/-30%}properties which are zoned for smgla-famay use.
Future applicatioris for new development or redevelopment In the Sierra Heights ar,-Wolld be a to
ervirnnmental and land use review. M'algaton would be required for as identified npacW Ir kasitr11Cifaaa
improvements would be required to comply with all applicable Ordkences. Fees would be assaaaa l to
comply with all Benera Zone requirements(e.g.Fire.Transportation).
4. Pudic Services
a. Emergency Services
Impacts. Some Impacts could potentially occur to ertargency service prniders during the
construction of the line. For example. Installation activities could result In the destruction of
waking roadways an which these vehlcles must travel. Also, detours or traffic slaw-downs
resulting horn Implementation of the protect could Interrupt e.nargency services The applicant
has provided a plan fcr protecting travel routes and for notification of emergency service providers
of potential detours/road closures,so that effective service is protected.
Mj I I I Measures: None required.
b. Transportation
Impacts During the installaton of the line, road closures and/or detours could affect the efflc.,.
safe operation of commuter vehicles. "e applicant has provided a plan for protecting travel
routes during peak use ,)erlods. for prWding clear slgnage of service mtMNptions, and for
notifying owran)resdents of abutting properties about the work schedule to minimize Impacts on
travellers.
i
Mitigation Measures- None required.
c. Recreation ,
Impccts. The project Is not anticipated to impaY existing recreation acttit:es. The more sloped
area through which the sewer will run appears too steep to utilize as a tray;plans for preservation
of trees in the construction area ant for protection of the Creek ecosystem,during construction
and operation a the system,should serve to enhance the appearance and stability of this area as
wall
The installation of this sewer line is not anticipated to negatively Impact any future development or
usage of t;e Parks Department property. While a portion of the proposed sewer route will be
traversing a slope in Honey Creak Ravine owned by the Parks Department, this area Is
undeveloped and not currently officially used for recreational purposes. The Parks Department
has long range plans to build a trail through this property,connecting to Honey Creek. In order to
facilitate future improvements. the upper(flatter) portion of the slope will be restored (following
installation of the sawet system) I. a manner that will allow conversion to a trail with minimum
Improvements.
Mitoation Measures. None required.
d. Pudic:Utifties
Imacts. No knpacts to existing slam sewer system a water lines are onlopated from the
Installation or operation of the Sierra Heights Sanawy Sewer System. The applicant has submitted
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ENVIRONMENTAL REVIEW COM4TTEE STAFFPORT SIERRA HEIGHTS SANITARY art MA-CT�ON/ODNit,ANCE EACUMS
FNxu,iry Z 19W P.00 S
a Plan Indicating ttat the proposed system wtl be coordlnated wah those working systems,so that
service Is not kltempted.
The addition of this proposed sewer system should rot result in a need for improvements to other
LARY services In the event that new development occurs In the area, neiesstatinp new ullily
systems, developers wtl be required to Install mandated systems, in conjuwodon wah
environmental and land use review for new projects.
Mt li n M3usurrU. Norse required
E. COMMEi:TS OF REYIEIYING DEPARTMENTS:
Vaflous City departments have revlewed and c rneraed upon the project These Wnarwas are attached. i T
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CITY OF RENTON
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MEMORANDUM
�,- DATE: February 19, 1992
TO: Lenora Blauman
FROM: Mike Benoit w+3
SUBJECT:
_ SEPq REVIEW FOR SIERRA HEIGHTS SANITARY SEWER
The following items may help you
comments: put into perspective a couple of the review
A) The study area encompasses 188 proper as, most of which are developed.
Except for one or two undeveloped (or under-developed) lots, the only
Properties with development potential in the study area are the 55_:E lots
ow.red by Lakeridge Development. The emergency services should address
their concerns, for future service,to the Jevelopment of those lots.
BI Emergency access will be maintained Der the Special Provisions section of the
Contract Specifications (see attached).
Cl A redline] temporary erosion control plan will be provided by the contractor for
approval by the City prior to construction.
DI Temporary and permanent erosion proteztian will be per the Design Phase
Geotechnical Report provided by Geo Engineers(January 15, 1992).
E) The work along Honey Creek will be performed under an HPA Permit. Our
intent is to work under the permit issued for the access road stabilization. it
the timing is not appropriate, we will acquire a permit specifically for this sewer
project.
FI Trees removed in the construction easement (if any) will be replaced by like
trees. Our intention is to preser a all trees within the construction easement.
G) The Wastewater Utility is in the process Of Deparing an ordinance for transfer
Of partial jurisdiction. This will act as an easement between two departments
of the City.
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A- City of Renton Insurance Information in the form Attachment A herein without
modification and policy declaration pages obtained from the insurance carrier.
�l B. Insurance Questionnaire(enclosed within Attachment A herein)completely
f filled out and appropriately executed:
�. C. Insurance Endorsement(enclosed within Attachment A herein)executed by an
appropriate representative of the insurance company(ies).
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1-0723 Traffic Control
1-07.23(1) Public Convenience and Safety (Addition)
Two lanes of traffic shall be maintained on Union Avenue NE at all times. One-way traffic
., at a minimum will be maintained between the hours of 8:30 a.m. to 3:30 p.m. on all other
streets affected by the projects. Outside these working hours, two lanes of traffic must
retained.
Except as approved in writing by the City Traffic Engineer.
1.09 MEASUREMENT AND PAYMENT
1-09.1 Measurement of Quantities
Section 1-09.1 of the APWA Division I General Requirements is supplemented and/or
modified as follows.
Where items are specified to be paid for by the ton, it will be the Contractor's responsibility
to see that a certified weight ticket is given to the inspector on the project at the time of
delivery of materials for each truckload delivered. Pa% quantities will be prepared on the
basis of said tally tickets,delivered to the inspector at time of delivery of materials. Tickets
not received by inspector on day of delivery will not be honored for payment.
1.09.2(2) Lump'�wm Breakdown
Section 1-09.2(2)of the APWA Division 1 General Requirements is supplemented with the
following:
The Contractor shall, within ten (10) days of receipt of notice to proceed, submit a
Complete breakdown of all lump sum bid items showing the value assigned to each part of
the work including an allowance for profit and overhead. Upon acceptance of the
breakdown of the contract price by the Engineer, it shall be used as the basis for all
requests for partial payment.
1-09.5 Ordering Materials
Section 1-09.5 of the APWA Division 1 General Requirements is supplemented with the
following:
The Contractor is cautioned against Placing orders for full quantities of materials until the
work has advanced to a state permitting the determination of the excci quantities required.
Estimates of quantities of materials furnished by the Engineer are understood to he
approximate only and,unless otherwise specified,the Owner will in no way be responsible
for any increased costs or extra expense that the Contractor may have to bear on account of
materials or work not being ordered at some earlier date.
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Iswry 7,1M/4 M PM!A
IGm �M Engini-Trs
Brown 6 Caldwell
January 15. 1992
I Fage 7
MANHOLE DESIGN
An allowable bearing value of 4,000 psf may be used for design of
manholes founded on undisturbed glacial till or dense glacial advance
Ioutwash. We recommend supporting manholes on a 12-inch thick mat of pea
gravel, using the pea gravel as a leveling course.
The manhole located at the toe of the slope might extend below the
ground water level, which we expect to be near the ground surface,
Accordingly, the manhole at the toe of the slope may be subjected to buildup
of uplift pressures when empty. The uplift pressure can be resisted by
friction between the manhole wall and the adjacent soil. Friction between
' the manhole wall and the soil may be calculated using a lateral soil
pressure corresponding to an equivalent fluid density of 25 pcf, and a !,
I coefficient of friction of 0.4. This friction value includes a factor of !
safety of about 1.5.
IEROSION PROTECTION
Temporary erosion protection should be placed and maintained during
construction to protect the slope surface. We recommend use of straw, jute
matting, or equal, as temporary erosion protection.
Permanent erosion protection on the slope from the top of the slope
Idown to the top of the steeper portion neer the toe of the slope should be
provided by reestablishing vegetation. The slope surface should be restored
so that surface runoff does not become channeled and flow along the sever
alignment.
We recommend that topsoil be spread over the disturbed slope surface
. I about 1 inches thick to promote revegetation. The topsoil should be tamped
in place with lightweight, hand-directed compaction equipment to achieve a
moderate degree of compaction and a texture appropriate for hydroseeding.
We suggest that the hydroseed mix be proposed by the contractor and be
subject to review by the engineer. The seed six must consider the time of
year for applicaticn, the steepness and direction of the slope and soil
conditions. No irrigation should be planned. Maintenance and reseeding as
necessary must be anticipated until the vegetation is well established.
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11� CI)Y OF RENTON
{ MMORANC M
DATE February 6, 1992 {
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TO. Richard Anderson
Manager,Utilities Systems Division
FROM(t
f// ,Donald K.Erickson,
�— V Principal Planner
STAFF: Lenora Blauman
f
i SUBJECT: Sierra Heights Sanitary Sewer Collection and Conveyance Fac4rtles
We arm pleased to notify you that the applications for the Sierra Heights Sanitary Sewer Collection and
Conveyance Facilities have been accepted and have been circulate'`er staff comment concerning i
environmental and land use review matters. These comments are o.. by February lg.
gel
The application is scheduled for evaluation by the Environmental Review Committee on February 26. 1992.
_ At that time a threshold determination will be made for this project. Follow"rig threshold determination,a fifteen day comment period will be undertaken,t ogether with a fourteen day appeal periotl.We we hopeful
that these public review periods can be combined;0 that is the case then this period should be �mpleted
by approximately March 12th. h these pubic notice periods run consecutively, then review should be
completed by no later than March 26,1992.
A public hearing will then be held before the Hearing Examiner for the review of the Condhiorial Use pe,l
based upon the plan to construct systems on a slope which is greater than forty percent In a greenbelt
area. This hearing has been tentatively scheduled fr`r April 21, 1992. The Hearing Examiner typically
submits his report two weeks after the hearing,a two week lab use appeal period will follow the issuance
of the report,this appeal period would end approximately May 21st. When the appeal period has ended,
construction may begin.
We look forward to working with you to the successful completion of the review of ;his project. Please
contact me or Lenora it you have any questions.
cc:Mike Borma
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'rl CITY OF
RE'JTON
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MEMORANDUM
K; DATE: February 3. 1992
v-. T0.
Developmental Planning Section
j FROM: Mike Senoidad
�sd SUBJECT: SEPA Review and Conditional Use Permit
7 RE: Sierra Heights Sanitary Sewer
Please charge the necessary application fees for the above mentioned
Account #421/400/18.596.35.65.45095 (45095/51701. If you have an
please contact me at X-6202. project to
Y questions.
i�
1 0 92 096WAe:ps
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