HomeMy WebLinkAbout82-62 REZONE 4 OF 7r
A. G-VOLOGY AIM SOILS IMPACT
1Gntr�dtitcti;cssl
Material in this sectiorl (V;Ith the exception of the e4cction oil crcs}olr) is taken from
the n�tohar 1.3; 1931,gealoaical site; rororurtaiss�anee report by 1' 1i; J' yclrari, Cztct se refer
to Appcndrx Tl for the report ill fts entirety a, well est, for cratClilr:te listing of the
refer anet,$ cited here. This report indicates that subsidence, 1e.2S of Mir►crtrl resources,
eros on, and volcanism arts not likely to lose significant pro.b'lctr r,' wll�, as expansive
sail,, fault displacement, rockfalls anel stii:lranic activity might pnwi sit;niflettnt geologic
hat.taz'uS.
GWIC,gical; Hazards
Subs;idcrtt;e. floc}, types pres ;rrt on tho p,sre�als arc- of a type; in which extraction of
subsurface fluids Will not result iti, sobsidenee (M desspi,earl lowuping. of the ground
surface), This concletsion is the Same as t vit reached in thL County Gcncral Plan (MAP
II1-1.1 131,1tte County 1977).
li so of ;lfincral Rasoure-z..5. Field examinat1wi showed no evidence of mineral'
deposits or sand and gravel on the site, The Lovejoy Basalt is buing, used P-8 a source of
eru.,had rock ill a small gt.tarry located off t}re property access road, about 000 feet soutrt
of the Little Chico Gree(,, crossing. if use of this quarry is discontinued after t}re
property is dEvcloped, alternative sites cart be drr'elopcel trp.,tretrm', as the Lovejoy i5
exposed in the canyon walls far about three miles north of the property bairraelary.
1"+"Sieh. 'file erosion hazard of Toomes, soi.t is rtated as "high" _ )y the :;oil
CoriServation Service (1907), based at least in p,n.rt on the rttt►elerate to steep stupes in the
aea. Under natural eondition,, erosionosion activity is 1
civ on the Lip; lanrl surftaces of Dot, (4i11
Ridge and ; S '! , , ,
�, rnoder•ate on the �lppcs of Ila lotvct J uScnta. Ut1.Mer coliditiotrs of develfapmerrt
activity, erosion in 411 areas can be e yxpectcd to increase; especially in steeper portions
Of the site.
Niost erosion V"orrlel take plttcr� dun•, n0 constr+tr ;.ion, gradint for road, esii ciall.y
ide-1111 guts;, ears ccntriLwte to both vfii'd rill(] watt rer•o: i+anS0111e .Crosicir► hotolcl al" 10
ttrkcptrrct rxt'ttr i1'oject'elervelopuncrl.t from tlrlrevc;€',c:tktt d cut aricfi fill am 5 twoutid homca
r ot• hlonf; ratarli. }ltoriol1 CAR &isO o(cur chan-glelsre
eciKe sign'ifictattifljr
ncr¢ as d stc�rra� runoff And their sero }e into gtlliie,; tittdrMr the force ttil t}tc
stortr water,'t;Ik would I)o unlihal.I.4".Imptwts 0f evosiola ittcludc, loss of -topso �}, altcr'atiotl
Of ltzrldforIl7ts duc to rriaa5 w z,tirtf; (in seve110 cases), anti_ siltfrtion of strOambeds which
interferes w'itlt aquatic life.
Eroskon is riot expected to be a sietnificant problem in this casrl ficeausQ of site
topography and pr-Qjcct rJesign. 'lost of the projoCt area is flirt or rattlt;Aiy flat 't.rpland
surface, which would not easily' erode. Ero�qzon activity from corrstrurttion and road
buildingtsk n Y p � ,
�, place on rtavzrrc sloe,; � wall :�� • Ongoing 'erosion fz•oK,t ► rirt�f f tYoulci be
prevented by MUSLIMS ou> linocl below (see section on Mitigation).
Voleanism. A generalized analysis of volot tie hr z;zrd; in til►(; ilrritcd 'States
(Mullineaux, 1076) indicates that the site might bo subject to 5 to 20 orn (L to 12 incites)
of ash from a "large,, eruptin., in the Lassen Pcak area. A "large" eruption,Wouldbe one
that erupts about four times as much matcrirrl as Was erupted in the iti7a.y 1580 eruption
of
Mto St. 1I0len;: The probability that such all event will affect the site is very 10tr1,
because it would require that a large eruption, t►nust!al in itself, coincide with unusual
clue-north higill-lavol winds
1IxPA;)Av8 Moil. Shrinks-swell behavior of rl'oomcs soil is classod as loN (Soil
Conscrvatiot Service, 196?). Qii the upland ridges, the scattered presence of sell :Mounds
and, rarely,,slrrinkage cracks ail soil indicate that Shrink ilwell activity is moderate.
F arllt Displa( gement. There is no evidence of an active fa►zlt on ti.te site: Iiowever .
tis described in the section or; f;eology, some of the lineaments visible on air photos ire
probably faults; further, although t ae age of the last fault activity in the lineament zone
is not known, the possibility exists that it is recent enough for the lineaments to be
Viewed' with some concent,
Lmidsli
`c's rnrl Rockfa-11S. The County C7oneral Pl►n rates the relative risk from
landslides on the site as llmoderatcto Examination of 1OW -level fir photos, and coverage
of most of the property on the r`round, failed to reveal any evidence of lodslides. Even
on the steeper parts of canyon walls, the strength of rock units appears to he great
enough to prevent slides from, dovelapin
d
P.OckiallS clo 'occur, hotivc:vc"r. A rockfa.l is the vapid fall, at least partly through air,
of single or hlilltiple blocks of rocl:. Erosion-resistant, cliff-forming layers of ntuclfiotiy
ddbrks in the Tuscan Formation are tindorlain by softer, tile,, erodible sedirnerrtary
layers. ` As ci•osiort of the Soft rt►Ateri'tl undercuts tiro hard layers, 'mntrr al in cin all clifi`S `
Eirertlts away, aloner rticar-vertical f 'ac'(,ursts attrl to#'nines downhill,
t
in ;placo.x) small bou:ldor sired Pieces of nludflo in to' tiro scatterG�d over the
s lrtaee of fire lower, @,`ot tly4-;;l0b4-tty soy Ai-rnenlary t�iyJor;;; $rich i'oc kc tl�ybris must have
fallen rite tktirt roll;erl or slid to it.; prO;ent position.
l�
l
•i
ttarthquake Activity A prinasury effect of an earthquake is ground sl)akin( the
laor.i:ronta'1 t,racl vertical vibration of the gc,owld that ctara result in daarna;e to buildings,
pipes, storage tanks, etc. Secondary rffccE a include liquefaction, ,lurehing, slumpiner, and
rockfa.11. Liquefaction, which caleen a problein in loose, gv ar'iular satuvate d soil, ri fcrt7
to Creation of a liquid -like condition in soill by vibraatton. Lurching and slumping, wvhiell
nee nacatit severe in loose, grratrtriar soil, refers to forulation of inotiods deprossions,y avtct
lark cra.ckos by, vibration, Mocks of rock than are on the vrorge of falling, are son7otirrte5
shaakrrt loose' during an oavtInqualee.
Because the loose, sandy, clay-freo types of soil most subjont to liciuoraaction..,
lut°tthing, and slaarnpIng suer rant present on thtc: site,, except perhap:r inimedilately Mon;
niter lriittet,t stream courses, tlle;e processes do not constitute n sit;trf.icant hazard on t
the site, Rockfall oould be a problem in plrcc`5
The severity of groGand shriking depends mainly on tho disttanoo to the causative
earthcluake, the str,ongth of the e;arthcivake,, and the aaturo. of the sail: and ruck at tile
affected site. The steongth of earthquakes is expressed 4.s magnitude (Richter scale), and
the severity of damrarle in inhabited is expressed as Intensity (Modified Mercalli
5 -sale )
Because the site lice wi.thira the northern extension of. the £ootbilis Vault 4'ystem:,
said becs.ute the System is generally 'Consideree capable of producing Fa magnitude 6.5
%irtrtcivake (evidence from numerous privaa,tta and public- studios is summarized in Div.
Njines Geology Staff 1979),) it is rctasonr IA, planning to expoot the sitc to be subjected to
to magnitude 6.5 eaa`^thgtirake with its epicenter, (a spot oil the ground immediately above
the earthquake source) lodatcd at a distanco of legis thtaa`t 20 miles. '
Studies correlating mtignitude, distanee to epicenter and effects at a site (BoorP
et.nl., 107€i) show that sash tan earthquake tin •miles from ti• e si.te� eottici result in
horizontal grOLInd a edoletration, of OA, to 0.4 g (20 to 40 percent of the acceleration of
gva-vity). This corresponds very roughly to an intensity of VIII (Bays, 10810). Tha •
followirig paraphrasing of part of the illodiflod M rcaalli scale; indi,eaates impacts to
structures of iratovs ty VI and grouter.
I, Wonk, plaastet wtd unreinforced adobe crilok; windoWs break.
il;it Weak,masonry d araasaged, some cracks, in t,")ort, but urat`cint'usi.cc?d, m:xsaitry,
�
r'lll (4100 ,, btzt Igirelt)forcrA nm"VonW, dntrt8Ot;; d; ,',oM0 dEali1tT�;6 t� Minfttr�'el� '
'5truetures °with good mc,ttaar nrld 'wor'k.ill all's iaill; loo �v� wait's thrown out. ,
µ u.
_ a
Mitiga i��4t„
J:, ,�.raszon
Mea:xures lncorporatcd as Part of Project t De s.i.gxi
Low :Goad cuts,, - mai ird ze a oo of existing roa,l alignmenUq, minimise sicl11,1411
outs- Make roads conform to nturtil contours.
Adegt,4al.-4 composition of fill area
Measure:4 to be Inclu( earl as Conlition:5 of Pormit Appro 1x1
Prop,.r grading - all grading dons: it4 arc ordance with Cha s eer 70 of the
Uniform Building Cale and the pertinent reccimra}ttdatiomi !totind in the Firosion
and Sedimentation Control Handbook (P.Y:.Arnimoto} May, l� ",�c;, Calif. Dept of
Qo:tgervation)
Prompt revegetation of construction site, and road gray}. n .
Use: of debontion ponds or other runoff -- control measuroa °to prevent
gullying of drainages and sedimentation of streams. (Poxtinent for specific
projects.)
2. Expansive Soil
Expansive soil can cause damage to building foundations, utility connections, and
slab driveways. Mitigations to be employed include chemical treatment of soil at
}wilding sites, avoidance of slab foundatio-as, placement of deep foundations below tr
soil level at which expansion occurs, and use.of grading and landscaping practices
designed to minimize shrink:-swell activity. Engineering for proper foundation design
is the key measure to withstand the shrink-swell potential. of the soil.
3. Fault Displacement
A mi igat ioF than can be employed to remove any possibility of hazard, from fault
displacement is simply not to place inhabited structures across any of the lineaments.
Philip Lydon or another geologist trill review building, sites in relation to the
.lineaments prior 'to to itati,ve approval of" a PA-0 or prior, to issuance of a building'
permit on parcels created by land division:
4. Rockfal]
Mitigations that can be used to reduce hazard from rockfalls include: (1) not
building dwelling, at the base., or near the edge of bluffs in the Tuscan 'Vormati.on,
p y s e ' begun to; unrleruut -the bluff; and () avoiding areae
es ecia11 whe e rosi:on has
downslope from large blacks. A minimum setback of, 50 feet- is to be enforoad from the`
edge o'f bl. i ffa unless a geatogist or 'engineer determines to l.e:�ser setback is acceptabl.a.
5.- E�t,rt}tqudi-p �ltnlcing ,.
Mi.tigatIon meas4,ires foxy earthquake-indulged rockfall are the same as descc±ibcd in
the lection of lanisliiies and rockfa`i lq I Cmpaca tf3 Of lateral. motion in strgaturos wi:l_
e covercl 'y following the design rr'aterxa of the Uni£arm, uildnng. Code, whic,h
ideritifi s al of Nortle.rn California a being in beistIc zone `;, (earthquake intensities
of - lrl or hi. 'her ant 1r, i e(J) .
i
of the 'project area, so increases in nitrates and other n[ttrierrtshould, even at fu"tl
buildout, be within acceptable limits, The three acre. of open rhea (,average) per
dwelling unit provides a large area for filtration and evttpotrMispirr:ttion of leachate.
Leaching areas will be subject to review arrd appraysl by the Tltrlte Cor.inty Ilealt;
Department, w insure adequate area and sol conditions in relation to proposed
densities, so the rratural nitrogen cycle call opovate to reduce pollution potentiaLl In
addition to septic .tanks, nitrates originate from (1) underground clepo5its of decayed
organic material, (2) atmospheric precipittitioil, (3) £ration by baetot`;li and algae, (4)
decomposition, of surfaces organic material (humus), (5) the npplicat'ion or fertilisers, and
(6) from animal and human excreted wastes. ,Titrates are removed by ;aoal absorption,
I
denitrification On the ar,senee of oxygen), chemical reduction andvr! mitative uptake.
The following excerpt from a 1970 study by Endel Sepp, Associate Srti itary EngineQr,
Bureau- of Sanitary Engineerimo, 'helps put the atlticipated impac=ts Of septic tanks in
perspective;
'In suburbs 'having population densities of ten to 20 people per acre the
total load on one acre of sail from septic tank absorption fields :is 100 to
h-
200 poundsof nitrouen per year. When this is compared to the 200 to 300
pounds of nitrogen per acre applied annually to crops oil farmland, of
which only one-half is removed by crops, it appears that septic tanl
developrnetnts in semi -urban areas exert. no greater nitrogi.'n load on 'land #
than agriculture.' (J A.R.A. report on Paradise Pines Surface Water
Quality, 19711)
For comparison, the Bidwell Heights project anticipates populations on the order'af
not ten to 20 persons r)( -,.r acre as in the abuve study, lau't instefad lass than one person per
acre on an overall average. For this reason, if Butte County 14e�rl,th Department
requirements are met, pollution .from septic tanks is not expected to be a probie;m.
Sew-A�e pzwposal,
This de nar4►ne'i t has rov oved :�a it clr~�ta o:r vrtri of . portions of the .rezone area,
Based oil data and ills Tiutte County S zbdiv;U ion Oiid.i.ru�nGP Standa.rds,; we have
approved -over 5� si=ngle fam,U. ;tAlAtig reoa.rl'oiit,.a'l, lots with&n the area, Minimum
lot s zes apprb o l: to elate have boon three acror, w1h moot lot; i 've acres or lam.
er
The zppro imate req �i x`er1 m ixt1,i.rrun sot.L def th it i hS n ryhc it,rea for a 'thiloe , acre-
lot s Since the average so' !r? � to trite Ls four fee`G ar Less.
�,.� f�iir fee �.. x,l. do 1ih d'haerv�.rl
the nu:tber of lots 1e63 t h'aa throe, a ;rPo la q t'za that call buy tipproved uti be 11ml.terl»
Si tP spec,a fie dal a may allow some onral.l lot approtrals
--L3-
To utill',ze leachfiel,d ,cjw•age ai.0p6s6l nystem, area;; propotjmj. For high density
r c}i FtsA-C will recluiaze proven soi 1 depths of
over wevc�n f! F L `I.�7t>ca.t� cl wrkte:rr' tests
$ubet 'slu"V�trr�. S:>ncGa pr.°�avp_rw
indicate sew•r�.�e W-111 not perr on � 'r.�:�tr�tL>.z;� aandt.t�.kuently
areas with deep sa;i:1 d� pths a.re limited, thy: higher prnpa{�k�tl ck+9rrs::i,l,y Within the
sotzthex n halt a f tn.e re .one a �a i not expectnti a be un r. f txt'tirk,y kj c ac Baal ttn l er,`
alternate meal's o:r sets ,. rl� pos tib. etre dev'aI aped. accop4:?.L10 to 1010C xlil carnia Sitate
Water Quality Control ' oardiar
��t�nr wr t r weld e a.s is wti thin the rezone area wS_tli a z e}��rr,� t �'d yield over 300
anon per minute I adec�wtte wales s't'oragea jaroV�dctd nncl .i[icl•ividtanl water service
2s mete; edt the rep well yield could carve a sizable �h'Lu pox l.l.r�r� of the rezone area.
To minimize Water interruption
and to �xsOure rtmple vial jos ter 'et�erf enci era
ad
d,itiaria� well sourced would to be developed. iarOSP.ntly 3_f1',1ufficient well
drilling has oacuzred in, the area to verify water' availability khxougkout, the rezone
area
f The otlKer water cl'vtalit concern wrcrt'ny of rrres'rtion is atreetrrt siltation xeswwXCing
from erosion. . Tl1 s issue is discussed in the section of GeoLaE; c� Hazards- xosian.
,r C.. AIR QkSA'GZ`t'i` DIpACT
Air ol.lutaz�t em.LSs'ior�s ger�:�•nteil by the po�7ceu a,nc�;ud�; tiatkt the short--k.erm
p
emissions from co tion and generated over 'the longi;-term key bo
stationary and
d be
Jehi�cular sources. In general., emissionsgoneratecl on the pro,j�ct site wrou],
c
p s evel,
in contrast t
readily � da.s erred in the more vigarotts win�:1r7 at that el.evat3.an :I:
enerated by project--y elated vehicles at elevations ans belool
periodic trapping of Emissions c
ally more citable. (Please see,
approximately 1.040 feet, taherla air can be season
A enclix D far a wind x•ose and oth?r Moro detailed Air Qual.a r;y Impact informa t� on
pp
aria caloulations.)
these cumulative impacts oil the local Chico area And ori the County Air BAr in level have
a betnn a;iticipated in the, t1wee percent pet year arow•th assumed by ti e California Air
Resources Board (CARR) in its omissions projections. While the Air I'sasin is now a tion-
Attainment Area for ozone and carbon mono:cWe (CO), the stan(I(irds ($ce Appendix D)
are projected to be met by 1982, assuming the projected groWth, sitt)ply throUCh
incorporation of required emissions control systems into rill'vehtcic;s. 11111ias the project's
ttiffic-generated pcliutartGs,
while ,iciciin to the, pollutant burden in the Valley portion of
the Air Barin) especially during the summer and fall inVersiona, arc; i of expected; to
exceed those anticipated in the Basin's Non-Attainment ;Plon,
If approximately two-thirds of the project's westbound traffic enters Chico (the rest
heading either south or, north on, i,zh;vay DD for other destinations), a rmiximu,m of 1628
vehicles per c1:x.;; would enter Chico clue to the project. in terms of possible 'peak-hour
rolzgestion, about ten percent or 1u3 cars/hattr v�ould be added to the morning :and
evening rush-hour counts. A "hot spot" calculation, taking a given section of a committer
artery inside of Chico, would show the increment of CO emissions during that hour thal.
would W, attributable to 'this project. However, in the absence of a known traffic
dispersal :pattern, it seems mare ao rG.riate at this time to sirn
p p , p l7 p, y point out that the
project's ernis ions, alonce with those of other proposed projects, would contribute sriitrll
percentages, gradually increasing over a period of several years,, to the Chico area
pollutant load. The project's emissions inctreases are expected to fall within the accepted
model of three percent per year anticipated growth, sir,oe the proiect Would not. build out
all at-,once but over 4 10-to-15 year period..
,�`tic�ar� Sot,tree Bmissioras -
The California Air Itesources Saud (CAPIB) has used 250 1,; rites or 25 tons/year as a
guideline of significance for emissions impact for NOS, amd TIBC; 250 homes 4vith tneir
associated vehicle travel produne appro.cimately 25Tlyr. NO and TiIC. (The AftBts
estimate'uses a trip length bYtvq en eight and 15 Hiles, similes to the trip length used in
i year, e project's NOh :and THC vehicle emissions
this re,ort.) At about ertht torn ger ear the
would b6 so low that c:von with the ,ti Donary sol ice e'Cit1, 4ions from 385 hatn`es €#CldLC1
these on, issions are not lis Cly to exceed thz; Alt'aa Icval of sibnif cr nce, At, .abort 71
tans per ,year, the vehicle''CO en ias'lohs t) tttos� from st.rtionary youret�s may, or, mc3y.
not be Ct naidet'ed sib Tific irtt at the 1o0al ILve1, brat not grit the Air f3asin level; depending
on ;projected levols at the time, capacity for, dispotsal and other faotors, Determination
of significance of CO and other ernissions levels will be made by tho CA Rtl
Consistency Wit1i NAP, IISD R alt itr�ns
t
As Stated earlier, this project's growth should be within the rntiph►itude and time
frame of the County growth projections incorporated into the Non -Attainment Plan
('NAP) for the Air Basin. No transportation control strategies have boon adopted in the
NAP; hoviever, the local Air pollution Control Distriet (APCD) supports County -
promoted measures such as the Butte County Transit System, The nilt,itra:tion measure
(see section on Mitigations below) of, providing a project transit bus tiviaicli would tie in
with the Countys Transit line would fit in with the APCI)'',s 6,11pport of local
transportation control measures,. In general, mitigation mem gyres ;for mobile sources
'
would-be enforced/implemented by the GARB. Motor Vehicle Emissions program (with an
inspection and maintenance program likely to be; reinstated in the iie rt few years),•
measures for stationary source ernisslons- Would;'be overseen by the Hutto County AICD.
No Prevention of Significant DeteriorationOSD) Rule exists for thin; Aie Basin (since
it is a Non -Attainment Area for some pollutants). The project is approximately three
rr►iles' from the southern boundary of the Lassen Class 1 gr(,:3a ,probability of pollutant
trA11%)ort to this area is low, since most winds are from the southeast or northwest and
would tend to carry pollutants to the north and west or to the south and east of the Class
i areas The main volume of P.missions, those produced by commuters, would be generated
'
further ar+say in the lower elevations) and would tend to remain in the Valley rather than
i
be carried u into p i o the foothills,
{
VIM''tons:
Measures incorporated into project design to reduce trip -generation, and therefore
emissions, include provision of a gas station and small commercial center on site. Thi
developer is also considering pravisian of a bras or van on a' regular schedule to transport
project residents to a Highway 32 bus stop (probably near Hi Glaway 99) , fxorn which they
�oould use the ChIco Area Tr ri;ilt Systern an.j Nhe BWL-tt GounFy 'Xransit System. As
the na3nrt re sof ol.eripn wary ✓~mhonl nge: children in the project incx�e ase, additiomL
school bttgee e woul(I jz5otae pvov` dn! ;-
a ,jrvir�.c7ri
j
D, IS)(pA$.7 .AEST41TI\. S INI ACT
The Sonic Fli�;ht+rays l.iemeant of the Butte County Coner� tl Plait t°ect gni es that
"Bol te, Cournty has man w M,►r ,
J y blrEw of plCtltr��]i1S' 1'l't�tttt'Ctl lklttl,�a lae ��till�� Ld`, witli
Fits chaparral verctatirn and' rock outOPOrs inOudin; b1t, M' -11rl` b0ttoq,.overlaoltjtj�,the
i
Scenic Cany
ons of Little Chico Creek and Butte Creek certainly qualifies tis a nirrj.,resrlue
area. The scenic, valutss of the: ridge are responsible in part for• the at�ea.'s eppeal as a
I`- setting for ri.irxl hornzsYtes, 7 � 2 at several. points although i�:c�t for The site is 'visible from Righway 3' the entire
length of the highway because of ,intervening landforms and vegetation. At its closest
paint, the project is about two miles from the highway anis most of t.h4 k 1 to is four miles
or ►x►ore from Highway 32. The site can also be seen froth several polriU tin the 9kywa,
with the closest boing three miles from the southernmost tip of th(0l)rojeet. Those
portions of the project tvilich are on or below the cos yon vim is sm,rill porcenta�gof the
overall development) are visible from the Butte Creek canyan floor. Tho project can also
be seen from res idonces at the western edge of Paradise which overlook Butte Creek
Canyon some three to four miles crest of the Bidwell i cibhts p> oject.
Because of the lame distances involved, aesthetic impacts can occur when site
development or construction activities alter thy: natural appearance ()f' ti la..rge area. This
can }iap'pen through vegetation removal, road cuts and f ills, exce6 ration for homesites,
and the erection of buildings of a contrast ng color to the naturatlandscape:
Retain natural vegetation in all designated opell space aVeas.
o Revegetate cut and fill slopes to cot'.t;rol erosion. (See Page 21)
e Select architectural styles and building colors which hat`►tonize with.the.
natural. landscape `rh;ir. is p,MLrbicularl.;y i.MPortant where buildiii s will
be visible above the skyline:
d Conform nevi toad and drive►,Ia,y 1,0+ ai±ions to the More gentle :slopes,_to w
recluc
cut and ;>:' ill, ro'giAirettieat;s'.
NO!SB jr4PAC'C
Short-term
The greatest noise generated by this project woultil be during constr ►ction, vthidh
Wotild taloplace, aver tin t►ppro iinately ten- ii ar period as i►oa`ne»; and cluster areas and
their access ro4d,; Like built. Ofthis noise, the no'st intense po iodl
of project noise generrttion Would k�4� in thcl firs yeLAr, �w�hrwn nnc th�r►tQving equipment and
other heady ��eltiicle4t 4vo►.►ld' be improving thG m� jor rot'I Ways and :some of the sevet?r.l
minor e6adwnY,,, Cnfistrttct on noke VY1,06t,l c4�titio►urc int at ►z�itter,tly thiol► bout the next
several yeturs, as homes and cluster' areas and their access roads are built. In the quiet
natural sett tai; on the property, construction noise would noticeably raise the local noise
levels. The area affected by this noise would depend on how widespread the construction
ctivity wF at any one time, on direction of air Movement and on the to,.. (O raphy Of the
construction site vicinity.Qund carries and is more ialainly heard 'in such a natural,
settinb however, in some areas, vegetation and land masses can absorb much of the nolle
near the construction site. During tho first, most, noise•-genet-atini; phase of project
construction; few people would be exposed to the noise since residences would not yet be
occupied. Ii. is unlikely that residences offsite (in the proposed Isom -Drake project to the.
immediate southwest) would be exposed to construction noise from this project. On site,
construction could cause some minor clisturbmice to wildlife adjacent; to noise sources,.
Some bird and rnammal species may avoid the vicinity of noise generation for the
duration of construction in that area. Although construction would raise local noise
levels; the impacts are not expected to be significant due -to the limited intensity
(loudness), duration and extent of the noise, and to absence of residences or other
sensitive receptors.
.>vo�-term •
On an on-going basis) the various projc�ct components (see chapter on Project
Description) would contribute .low levels of noise localized at the source. This would
apply to the occasional light-duty traffic on the project's roads, to the residences or
residential clusters th rnselves, to the commercial area and to other miscellaneous noise
saurcc5, stick as well pump compressorti. While none of the noise generated by the
project should be at leveLs or frequencies 'objectionable to the residents of this or
adjacent projects, some wildlife (birds and larger Mammals) may avoid the; places where
• L` areas
their habitats border on areas of human activity, such as the residential cluster
with higher densities, or the conimercial area.
The project c•oriponent iIhioh would produoe ocrasional.ly objectionable
role would be the Fire st�ytic ri (h.zitciarietl as par'' of the 'O,r, ojrvc ti . The
sirens of the fare en@;l ne, i L though giiite loud, t4otu7,d 000ctr so J,nfrequen.tly
that, the; :l istutrbs�ice a ai e", hs to resp dents oxo Jiearby w, dl.ifo Would not be y
ifa.4�rit.
2
Txposurr. of project residents to traffic noisy= from Ifig'hway 32 would be mir mta
since tiie I,Ii�hw;iy is not heavily tra Bled and the pr,ojoct is over a mile r�wtay. According
� t \ {� h p a i
to the S AU' Office Of NoiSO� CIA)trol's document _lstiMation o(" l.ornmunity Noise
pnute (May, 1975), general traffic between 40 and 55 mph_pt-oduc0s rin Ldn (equivalent
tvCt)tnmunity Noise Exposure Level, CNE of tinder 600113 beyond to di."tance of 200 feet
from the highway's centerline. On, site, this noise level would be indistinguishable from
the outdoor background noise of 50dB (day) and 40dB (night).
Residents may hear occasional heavy trucks Climbing the grade by the property as -
air currents carry the. sound in the project's direction With about 0.` percent true s, a
11095 CALTRANS estimate of 3700 ADT on Highway 32 past the site viould mean that
about 244 trucks per 24 hours, or about 10 trucks per hour, wouId tr,tavel pzast the site.
According to the Motor Vehicle Noise Laws, trucks should be no louder than 90 dB at 50
feet from the road's centerline; with 4.5 dB reduction in noise level with each doubling of
dist:tncrr, truck nol5e would be about 60d8 or below on most of the site, rassuming no
earth mass intervening: R. lies on the Vineyard and on the ridge to the south would be
maimlly exposed,, at about a9dE outside ,the house, since this location has a; clear line
of sight down'to the highway. This noise level would still result in acceptable indoor
Noise levels of 3901 since houses provido .Fabout 20dB noise reduction, Homes north of
the vineyard would be minimally exposed to truck noise,, since the 'knoll (1487' feet
elevation) by the Highway and the distance (nearly two miles) would attenuate the
sound. Truck, noise levels here and in the clusters in southern parcels dawn below ridge
levels would be acceptable at below 55d8 outdoors and below 35dB' ndoors
Ivithin Chico,,project-generated traffic would add somewhat to 'peak-dour noise;
levels.. `A portion of a Maximu' n of 2fi00 A-D"l' would: be added to the section of Highwrty
i; $2 running through Chico;, over a day's time this would' be oart bhq oxcler of 2-10 :percon: of'
the projected 1905 traffic 1/01ornes_there l-lowever since this, and other subdi".dislon
traffic is all 'part of the: estimated 3'.5 paacont per yar• y�nhawth, rate of traffic (Bute
Coun, Gereml Plztin Boise Element,' is 1V-$) for this roAd arzotiono the mise genorl at d by
this traffic is also `taken into account in the Noisc l.lem.�Tats st�atenaon (p. TV-12)that'
rajr~ctod increases in traffic volumes shauld ,. c,,au. e no i'nif.i�:�tnt rtc revises iia noise
3 Vf..
n
These concerns are ad ressad in the fallowing sec tion as
Encourage expansion of Private utilityf
s
ysteins consist r�nt'
ti�i th CoU7tt y plans aild Policies
.(p. 3Ej)
.
Locate neer fire sta'tiorts with consideration to acces .
s,
biIIity, future development ,and natural fixe liazards
•
Regulate development to X )
Pa4ilitaxe suxvival OF, clean
herds and to prevent destruction: o C �riparxnn
urA•i-
. r,.., (p
Consider fire hazards cis in land
use and zoning de.casa.o so
and guide developm�r;it to a7•eas with adequate firs
w
protec-
tion services (p, 4)
8.
Circulation Element
'1. Automobile
Design
a) all parts of trae c;i.rculatoaysystem should be
sealed to the fUnc,�tion they are
to
corlfo:rmance with the densityperform in
and total
population
Of an area and its related land use requirements
Design:
g
b) routes and facilities of fixe rircizlatory system
should be so loca}sed y
and: deli r
fined as to meet the
demands of both E:cistin9 end
proposed ]_and ixse,5
C.
Coxiserva'01.1 CJ ement ... .... _..
I. Dr~aina e j Waste Disposal and Storm Water Facilities
CQr,�aeptual%
a) ...... facilities precisely located in advance
of anticipated construction
many pro3e
ctDesignbe timed ints can lE demlapmernt
thereby re-
ducing the incidence
of la'te:r disruption to
titin ;faCtli.ties and
/epi.
conaequent robuild ng
lF'• Chi:
D •
Open. Space
1. Develo ;LeCtt Capabilities -- Constra nt'
Cotncepi ual
cE) st04i.es ilot�1 , be conducted t0 dete.r, 1ne the
urban devel.oPmenla ca �bi..Lit-I.c; .the
,4 of footi'ii 11.
and rnotrttain ,axyea
Cn cepi ual
b) the Cola.nty sh uld allow uror�n Cleve Lopm nt onl.
areas phySical I y sur ten t ( � � y
o etat;}x O.se
d
Conceptual./
c)
no urbaa development should be pox-mItted on
Desi.g :
highly erod>rble land C .;l)
d)
the County should regulnte rt-si.r-tc',jtt•'t,ril_ deve l_op -
Dt,-sL n/
plant in the, foothills to41:c� the survival.
r1p
and taigrr„tion of deer h,: cvds (Dopl, of F sb aad
Game reoo►7mend 20 to LNC acre (,v '[:ctxgex parcels
in m1gra Udon co vr'i>dors, 6.B)
E4
Safety
Element/Fire Pro tectioa Subt.leIC em
I. Cil'oulation CoasiderationS
a)
in caseof a Major emergency or disaster, eVacua-
1 Fsign
tion routes and ma jo.r trans systems mLtot
re located, designed and mainbal.nod for mobility,
and safety (A, 2, b)
Vii)
easure that road access for neer development
Design
is aaequahre for fire protection purposes (Policy
7)
�
2. Fire
HazardDRidge
earea ratedlosi
�rforYaaard��iti
r
Hightmaxgi-�il_to no pro-
tect-ion
r County fare standa.cds
a)
make protrecti,on from fire hCazands a consideration
Conceptual/
in all, planning, -regul.ato.ry andoa ' i,tal� improve-
Design
went program8 with special concern for areas of
,!,hi u-h" and "extreme" fire hazard (Policy 1)
b)
use fuel.breaks along the edge Of developing, ;areas
Design
ihigh" and "extreme!' fire hazard areas +Policy
Conceptual,/
c)
tletexra:�ne the , Level of t�ratr suiplios necessary
Dos i Vit?
for new development for fixe protection purposes
(Policy 6)
d)
red .late use 0j. certain building materials,in
�Msigr�
areas of higher than avera e fire hazard, (PollCj
'1 C )
".
Mousing
Ielneli t - 'ilolle applictl'ble
C.
Noise E.IeMent` -- n'one af.plicabl_e
li.
Seismic,
Ga: oty Y:Lmienl- none applLcabl e
4 .
' p ' ti make the area from the vineyard north unsult titir� f
full ciev�,lo rT.ent coral
larger people -shy wildlife s peel e,5 for some of the
hahitations t other thuia duel 'mainly through proliferation of rcr!td,n and $Cattered
direct removal, of a significant area. of habitt,!i„ Upland habit, t
removed Mould
he mostly new growth chaparral, with some hili ,
a8sland, which etre of moderafie Wildlife value rrnd not a T �f4�71 bane and open
co rn rn u rl.ity,
rare of t!!�,iliVe vegetation
Vegetation types removed in the southerly clustered Parcels ;vr�i;l:lci lac rn
_ corrtposed of carne chaparral, sart're �;rasslrindal seine oak rvraadlatid, 1-101 stflall amounts of
varied,
removedravine woodland, depending; upon cluster placement. Gak rand riparian tivouctl!nds could be
, in stnnll quantities these are the most sensitive vegetatip�7 'ot�taataaunities froth
an ccologicptl point of view in that they harbor the most wildlife acid ca
revegetate once removed. Clustering will enable a design that avoids a met readily
i wooded
habitat areas and leaves maXitrlutn amounts of natural land (see Niitibatton '
Measure list).
Indirect impacts to wildlife of both cons t>?uction Are brt-i;aing residential use tivauld
nclud=;
o load kills
o Poaching
'o Depredation by dogs
Passible reduction of spring water in drainages downstre€ttn of prajee well
+�t17er impact of distut•banee (e,g, noise) associated Y,vith human Activit
These effects would probably cause slight reductions in certa(n Mldlife
populations)
especially those itaaabitng or ,moving through the portion zoned for ttVo- And three -acre.
lots. Thus the value of the lands just north and east of the vineyard : ..°
north -youth Wildlife movement could be sianificantl<< y its a corridor for
,, reduced upon total builda'4tt.
In particu"Ler, tine project J:ies eti_t:il'oly
within thkT6hama Deer lI�ra j3Portion of t
he �EastinteranS ) aad woLl
Species. reaue ovai1�b1e wizltPz' hg hab 'ao�
w.
Pot, this,
Since the deer's migratory routes have been blocked to salr!e ctl:tat, b de.
further east (at higher elevatic,tas — 1, ., y veioPment
o! t st Ranch, lltt'Cte ?1'I`eadows area), the boe ,N-11 1
Ridge, ar�n h -Is .fewer. t1��z•a.fory deex` th=an la �revic�u
The peolfoot area a Sorts t# 1 yeaxs.
Pt pt?toXtrt'ately kb tr?,tdent dee"i !ttata�r of these ager Will, be
dis�ilacecl with
development of the'site' 'bath tlarorarrh irttbit�tt
remaV
�listurbanoc, al and 06' ing;
�3�
Acillitic Biology Irnpacts r
The project area includes about 1000 feet of ail intermittent stream oil its lvestern
edge and about 1500 feet on its southern edge. If these streambeds erre to be included in
road, home, utility lino or otht,.r construction, a streaMbed altevation permit (a 1603
perrmit)r will have to be obtainO�d from the Galiiornia Department of V i:sh and Carne,
Impacts of erosion antO sedimentation or of surface or groundwater pollution to the
aquatic, habitats 'these intermittent streams or of Butte or ,Little Chico Creeks are. not
anticipated to occur, see discussions iii Water Quality Impact and Mitigations sections.
Curriularive Ino Pacts
This project would, re8L11t in adverse impacts upon foothill. ecology tiihi.oh
waould be parl;i.ally.redured by the mitigation i ezaquxes on liage 3c>. , Local. .,.a....�,,. �.
wildlife populations woulO be reduced. These species may adapt and adjust to -�
disruptions in their norm 1 movements, as long as the sucr•oundin ; lands remain ,
undeveloped as a source of unrestricted .activity. However, if,adjacerrt lands developed
in similar fashion, the foothills outside of Chico would become unsuitable for larger
wildlife, thus upsetting; the ecological balance. In general, the foothills are an important
t isition between the valley floor and the montane habitats.
habitat being a none -of tr ai
Both plant and wildlife species need lame expanses of undisturbed land in this
transitional zone as a buffer frorn extreme conditions (temperature, ,rainfall, winds) in i
the lower and higher elevations. In addition, the foothills contain a flora ;and fauna of
their own which are important both in 'their own right and as links in both valley and
montane etiology; It is thus important to use moderation both in the spacing out and in
the internal spatial configurations of foothill developments to retain as much
interconnected open apace as possible (measures to this end are Iisted under Mitigation). r
on a,'regiona,l scale, if dense residentlat developments are introduced lilto the foothills in
substantial numbers and are located c,loso together, foothill ecology would be adversely
k(fected even if mitigation measures as listed awe implemented within each development,
since no ares, would be far from human habitation.
I�tre ot• lr;rarr�cctl Sptci�
since the rare and endarcg'ered plant species potentially or actually growing on the
project site f;rotii on teop, rocky Outcrop giroas wyhioh would not be disturbed by
cievelopmert, and sinca the one anrxtrc;l uctut�ily found Onsit, Widwvell's l�not���eed,
I'nly ,otr�r n hidr�reTli rig) easily rc,oeds itself in i is steep lint ikrxt, mitigations for rare and
"34-
endangered plants are not considered necessary by Dr. Kingsley
Sfel,n, ,v}tO carried ottt
rare plant survey-, for this report.
No rare or endangered animal species actually* or nti;a r
t lly inhabit the site.
Suggested PAII..iUation Mensures
The value of the area as wildlife habitat is geriet�a,l.ly proportioi7{il to the variety qn(]
denslty of the vegetation as •:vel aS to the water supply. Thus, to preserve wildlife
habitat, Vegetation ;:should be preserved as much as possible. `Mie rtr�i ntenance Of
ve0e:tation is also important in stabilizin4 the soil and thus Inin mizinlserosion. Although
fire is a natural pltonornenon which maintains chapavral Find grasslyVId communities aria
hOIPS to recycle' minerals, it is not always compatible with humti't 11abi`tation; But
removql of chaparral increases the dan"er of erosion and e
a p..r;heaps toren Mud or rock,..
slides. Thus removal of chaparral should be Judicious.
In general, development 'should use these guidelines to preserve the'site}s value for
both vegetation and wildlife and to mitigate potential cumulative impacts of this and
other nearby developments upon the foothills habitat.
Ii Concentpate development in clusters, leaving as much
continuous natural Open space P p ce as possiNO,' this includes not building perimeter,
fencing,
2 Leave riparian corridors Continuous; keep major development clusters out of
wooded ravines
throtiQ riplrJa, -zone setbaMI..q ns recommended by the State
Fish and Caine Department; minimum setback is loo e. t.
3..
T�eave cgnnectans between riparian corridors aald major open space areas:
4. heave Substantial connection of undeveloped. land between the major open space
arms. ThtS would mean leaving an opis splice corridor throUgh lots zoned SR-2
or Stt-3, to connect habitat in the lower 10-ricre parr-la ',vith open space: to the
north. -
5. Include a variety of habitats (vegetation types) in the major open spacf� at•eas
some chaparral some open shrub trod Digger pine, some flat gras8land, as well
as the Oak woodland and densely vegetated ravines,
6. Destroy as few mature trees 88 Possible,
Ti Preserve. the connection bet,veen raterbofiiew; (the 00s162 pond) and their`
drainages: (the 4,OO(led ravine to the soathwast).
8. Cross detiim e beds with open bridges rather _tttmi � lti;ineei E?ei fill and culverts.
9. i7ae existrtg rand+,nays ivherevcrposaible, to avoid cutting new ro>;icls'throuah Litt
open areas. Cons 4r uc t and looa.te racc e ss rovidn of vif f i,c i,on l+ 'width to
�
hatidle fir's: tit ioks and other emergency vehicles.
10. Around the perimeter of d► veloment clusters, leave an itnitnprpved Iow-de►asit;y
use buffer zone (such as a foot or horse trail).
11 Coordinate planning with proposed pro' cts ora adjacent lands to irteut-pottiate the
above principles, especially leaving connections of continiaot►517tti.,ritat AITIOa4 the
projects.
12. Allow no free -roaming pests, prohibi.L' i►tant,'wig, and post Sjvif-�[ Linai. s of a0 tnph
on project roads,
H. CULTURAL RtSiDr. RCES IMPACT
Although this property was considered highly likely to contain t•ern'ains of prehistoric
hunting or :food gathering camps, the findings of only one insignificant mortar after a
thorough examination lead to the recommendation that atrchaeolopieai< clearance be
granted for the proposed project area. No;f er to Appendix 11-
1. TRAFFIC IMPACT
The impacts of Bidwell Heights on traffic would occur in the same way rad would
those on noise, air quality and other impacts of residential areas: they ;would occur
geadutally oder time as the project is built out - probably over about 10 to 15 years - and
}}
they would occur in the contest o,f other such developments. Traffic impactswould take
I_
place 'within the [project on local Doe Mill lbdge. area rracis, on ili.thviay ��, aid vla.kliin
Chico.
Trip Generation
At a maximum, anticipated buildout of 385 hbtnes, the project would generate about
2700 trips per days*
�A trip generation factor of 7 trips/da,y Per u►iit is user,1 170rO; although CALTFtANS
uses 10 trips/clay pot, utait, this 111ay by too high• I tatte t.ourtty, in particular the Air
X'ollut on coptrol District, I Sas 7 s%nt:c it more, 41arely applic.o to a rttr�al, sithrttion tmder
crt;clitions of high g,dolino pri'crs in whit. -h iacople combint trips-. 5ohool buses wouldtake
chlid ott to school, anal lluttill County "i"ransilt Would alsobe avall,M)le, further retiurinn,
trip generation'.
..3 6_
facal Roa�1i;
k'ro jGct .r.+s.iden'4�a watxld t1,oY tits: local unpaved ;ear>,ds, :i,9r partiru.:l ax Doe 1,111,1 Road, to
u minor Iextent.en�.
Accax•dinrCa to +rlill:i;;am ohoff ofthe, Mt;le Cottn'ty Public Workij Tie partalln,
ttan ultimate project ADT of 2,430 cars, of UIvIch most troll use Cianyan Shz�clatrs road; will.
create safety �irxd mainte xana� problemc� d'ue 'to the minima:L roacl standardo bpinE, uaad in
the construction of the main access road:. Cruaedrail 'XI otrtoido of curves on °the
canyon side o P the road ,and On L•be bridesliorald be :irtstal.led. A gvavel, r0r4d with, the.
Cr �.. r
projected amount of tra-tfic and grades W. -Ill FQner`,-tte dt�;t f and rottmh r .ci�.nl, nc�trar ter-
istics w`1 4Lrh trill reci•uji e Constant maintcynattcr-:t Local access roads: t10n0:4 b(s ava.ilable
for emergency acczss in ans] out of the pro jeCt, with px'apo;sc�d use of 1C11001(_ down res
te s
at project bojandar;i.es.
Surh roa+l s would inrzl ude Doe Mill }toad to thQ rtor th, Centerville
Gzp Road, and Doe Mill Road to the south-
Rrojeot Bntrance
Staff of the District Office of CA TRANS (14arysville), i'c!ra'l that some ]eft turn
pz>'abl.prns may aacxYr at Highway �
2 and Santa. flay. Although the hJ,t,hwF,y -16 relatively
t;i.tsn at this paint,. theyfOlt that since marl, project residents would
straight for food Vi
be turning left onto Highway 32 (towards the valley) a problem oc,WLd occur at times,
with heavy vehicles corning downhill. lmpac is "of aarair,LructIOn of these
particularly w
d
improvements would consist of small amount of Grain; vegetation removal and drainage
t -of -=say a sooiated with widening the road at this, pa
modification within the righint.
acts would be minor since very localized grading would change- the land for
The impm
slightly. Erosion of the cut slope should not occur if .revegetad.on is carried out
it
n pipe, etc..
drainage :is properly channeled (by lc
promptly and if storm�rtaterrracing, � p p� �
where applicable
32
Hi t hwey the project t and, Chico CAL.t.RANS ata
ff felt that •l:ixtM highway has ample
'Be,twe r p j '
capacity to handle the maximum project Apl' of Out 2 �E3 •* The most heavily used
Section of Ilighvtay 32 is at Chi.coIt east edge. Even at pewit hour,
the rtirx,znt traffic
volumes of 490 cars per hour are signifa.cantly uncit�r CaADTRAIiSt design capacity of 20C)0
CA en hour for a two-lane road. The acicl.i.t i on o f ono then few hunched care per haat clue
P
to thin project {using a �;uid�. of 1C) pex'cent ADT for p�:=rte hour) would not bring the
traffic to the raanfestion paint, unle'.3�; other unanticipAted Lt-affic increases occur
btytr,rsen now and pr�yject buildout, This applies aloo to the o(4rtion of Highway' 32
between Santos ?'lay ,and Chlca»
ro a�cl fax' 1h project area, a, small
fta�tvtt, i,nc� other residtxt:tc►l' frnwth i i? P M M ro cess
VO tent, exists that': x,430 AI?'f' fxom this,ra]ec oddest w Lh txnC.f:ic from otiie2 andJ
could extend ave. the projectec x,99j A!A of 3600 for this ser ua,on of l�igh�vay �
brirt e, the road closer, to r aipaoitAf�
* r - YCcnt cf project t' i.�,s lO =percents or �'�tl, xrcrulrl �rabably heed past
+SCJ :: x
C1.C1;lig r�tlt�ai� ��+
Tn Chico
(`Ifa t
AI-I 2, 4•'3C daily trips wattlrl ort tr:r (:It 1-cso via fli jg,li 7 v w�
J '; Some would herd,
11011M rpt' rauLh on I[xlah1'f=tt' �J :l' rrltaril a twou'irds of ,(�'rt txt�fF :c were to
011tor 0'11 c w
o, �til � m��tzt�arrc�l earhi.k r, cants ,tlon vou` d not
b'l l,i-1^,Y°l,y uril.e„s sever'r'ti ta,r'r;�'
dt.veslnitmr:tti,, Were. ,also ln.til.t at Crouncl th': ne=rve Li.me, Irl Whbflt cane entering r i
b,7 I'-),#Id I could. becomp, r;olisr-Stied 61, "'%I.
Jim
cane ry ` � t1a.R�,.
�a, ,ir, �tr��, ktag'kl:lay p'181, OfP to
r t)r�tt.l� Br ur;r” Roa;•1) to IMI/0
• a ia:'ve1 etf Srrvjoc� 1� 1��•I'1tn ,;,�,��xrr''�OG. ]�cav�`t t*;
r'r 1: l.tyr� h o rasa ryr al cora#,,,fir :rt IN I,* 'IN0111Y "'11.1.y ti C(l in urlj"lrt �1 �, ity'l
c:a:r dations which (�>-ceeti
th.�.t i •.; w
a 7� .Intl L levels, are
cctlrtiAl�rr�tl: ligni.•ficant im acus.
s Pence p ` (Ref'r:r'rnce 01110o Area Land April 198,)
h14'L7.t'ra f i 0 tj
1.. Leat turn channeli.zarian, a lane in tltn downhill (t�et;tlit�und) large of j to
ar:ct�rttittarlate pr'aaFc't zesider>ts and prevent other 'traffic from blaving to ,top.
(Ca;l l;rans letter o:f March 1.P-, 1982.)
P. Any gradin for lei
g . t turn Or oth9r irnProverrlents on Itighwe.Y 32 should be
revefeL•aterl promptly with-native vegetat-,On prior to Winter xrtl.tt,'y season(November to
March) .
They developUr had cons i derv; Incorprxrr i i.ng the following measures into the
project design: (ax) to provide auxiii.;try accesr #o the projr-�c{, Without creating unduetrrl,Ef
traffic in nearby nei hbax Ytoods, several. local. roads (marred on project Map, Figure 3)
would be upgraded to all-weather traversable (PS81 County �tandard,) and provided with a
gate at project boundaries, to be for emergency Ilse Oal (b) to redtwe overall trip
generation, the developer would Prove de a convenience s11a n and
�' g bas stmt Lon near the
project entrance (see 1i-G area on Project I�taP, k', gure); and (a) to reduce tripgeneration, the developer would Provide a small, transit btts or vats to circulate throu&ll
the project and tie in with the sc liedtzle of the iiutto , County Tr'ansi,t � . VJ
ing and:. collecting ;,se J� Lem, by .deposit" pa.�, ngexs at'e citing Butte County `.Transit az d Chico Area Transit'
system stags.
The fire sta,f iorz is to be bl.t by 8uminer 198a. I'itliitlg of the nLighborhoo;i
coromerdi,al area is depenjent on ha,vi n z
e, iu�E.f r: ien t numbers o C .Ldents to jug, ti f 5.t
and .thA. plank of the l ot>H-hall pxo,je�:t fox' a poss3.ble :store and Lrls station near
HigOURy ar ; ;id Santos 4ray.
A Carl turt'; ty Spr*rice; District i,s �'Jt''r�po QF l is t7 aslmirriz�'tr''rrl r� t
tixc .fist, station!
traris:i t va' I ans trt rl ar fa,tor's b=?yo.nd tfie 'cape. or 0. ftot reot�l�er;,' Asso�iati ott.
J. PU.B IC cyRVIcr.S IMPACT
The chief public services needed by project residents ���ot�lci be fire mid, police
protection and school facilities'
each of these ser•vic es, t}7e projc c.t'zy demand would
not in itself' overextend the 'capacities of serving agencies, but would be par of a
cumulative demand which, in: the case of fire and police protection, would result in
inadequate service levels and a need for mitigat)on provided by the projt:ct
Fire V-rOtectiata
As human activity increases in the chaparral wildland are�ats both fire hazard
...
(already high to extreme) and the need for fire protection tivill incre.ri5e.
- . A.ecordittg to the Butte County fire Department, the 385 .unit �leve),oprnent; would .
have W, estimated populritiotl of 777 people generating 8.1 medical ai.d culls, 2.8
t us 'calls for a total of
C" ,; ruc.tural fire calls, h.8 vegetation fire calls, and 33 miscellaneous
14.2 fire/emergency medical oal s each year. These calls would gerterate an additional
annual workload of. 149 man'nours, aduing to the cumulative ma�tpower and response time
problem eveated by the existing or planned develop., ri.ts in the surrounding area.
_ The project would provide a volunteer fire department, to be located east of the
vineyard on the mutual water company land.
.A fire truck already purchased and additional equipment bought in the future will
supplement tate existing fire departments, enabling afa.ster response time. itiater for the
Doe KillRidgefire trucks would be supplied from wells and from the irrigation pond on
,idents on adjoining lands, since
site.. This fire equipment would be made available to te
the volunteer fire department 'arid equipment would become part of the County Fire
p = to fires on the site would
De artment. With the fire trucks located onsite, response time
be much improved over, present and p roje-fdd service level: available from existing fire
departments (Butte County U.S. Forest Service
y p q p
If the Count lire Ile ar4rnert finris fire;protectian to be ina
de . urLte for the project
even' with the o; site equipment, its reg1irement of fire lvydranitw for developments with
densities b>f ane to five acrxp.,/nU would`b applierl� lack bydrtnt rnutit ltnve a minimum
i `u t4 must be scaa,cccl a n11nimutt1 of 500 feet from adjacent hydrants,
flo ., of 500 rt
and Have a four inch stain heal` -tap:.
For sxtCc� clrcttlt�t on dt.tT�inr; fisc'/re s`cu�: (?r1tr5ri P.cies the L�.Wid Development Seetidn
of the FUbliz Works Qgartment t'cc}uirc :
r
1• MfIxirnum street �f
grade an graveled tL7d oil
percent, othervvisE ed roEtt`Is should not
t,l�ey� must be paved.
2• Bridges must be Ft rninimurn of 2
' 0 feet Wide and have t17e ea
tort flab tNu-sk• Ti�te ani -1, a
y bridge on the 4 t� trity to crttary ti ill
up to 50 tons, site is Ott lerq,O�feat wide ,and can r
u ep,y
• Curve sharpnr{ss irY a road ►nest I�flcje rn.
Within a sttbd v'.j minimum 400wfndt center line r�tclrtl;
�5ton
4• �lultiplc rtcecss is re a
quirt d because rnar�e than
subdivision; at t went there is only 20 lots are ` roposetl ,for th('
5'• Cul de sacs beoause the ro"e ✓one access route.
but m ct is out or the urban are
o, only have 0 lots o, MaY be of all lens
developed tvith'n tl7ern, Y tali
circle rs needed to accorrtnodatt? 50 -foot -radius t,urnin
this r'equarement must be met, fire engines. CVt eri Plan details are complete
610, .Road names and burltlinr',
,numbers must be clearly identified from the
names must be
approved by the County Street game road and
( construction this r(,•qu remerit �v 11 be met. Coordinator.
1~�or firs At time of
G
r H pre'venr.ron tnri structural safetl
equirPrrtents/reco;nmtnc�u'tions which could beth'e fire departrnerrt "
�nc.ludes the following
at time of eortstruction: come conditions al�lled to
home builders
a: A one-half inch spa
rk arresting rne�h s��
g w '
fireplaces and �voodburni,1 stoves.
y lied an chimne
b. Roafin� � s avc� Y� for
�, and � reen bo instn
str nl mTtterials should be constructed of fire resin '
inateri�ais,
t"t
e• California lain specifies that
clear all fl�nrntriable vef {, � Wildl�nd areas with development need to
Getr��ion for 30 feet; a
if erosiaat might aired all str•untttres. IoweVr,
Place � ctca�e pt'ob�l�rtts, same ►lrturt<zl vegetation m
btttrasa must be mawetl and all dead _ ay be left, in
down t7ja,erit1t a d li,Mbs from
round mclettt•ed. m
I tree trunks �,Ind
d, .E'tle1 broj.k4 ust be t� 'e }
irl.�lth tvc�:� var; ;, r? tl ��dS ofc.p cry
Y I;l� tire tlrc a Kq tee{ clev dprr,eht"',
stpcpnc err sitz , � P k p pY !F�et1W .Etnrl i
P,otr
Prt;► ection
Sinf±e� it'''£
t? l no
tl�wSl ' r
tYcrK�Gt n �,rted rahcrrf', ptltrol �i
i g, Irnty r�nforr�rwrtent tltnr�o n tho 6�r'oJbt tare's urtd
raavelopr�ner7t ti�ili cr�crYtc no future plan fear
nn i'rtercaaed Clem fiid for
b
police service ;where it is already, inadequate. Significant unmet demand wiil Occur
surrounding areas are also developed,, Y the
The developer . plans to provide, ra .security off c+�c ,
p , patrol for tits fttYoject, tca;bE,
paid, for through r� Iien1aoW ersi Association in the r�i,a.taner of a spec ral tasyes,m;�
district. This measure (also sug e;sted by the Sheriff': Department) w�`ould Provide reru n`
patrol in the project a, well as ar
good x�esponse time to calI ls. Atao5sible further
imp►•ovement inseeurity wvould be io tie in a security a.Iarm sy; tern With the cable;
television line the developer iS considerin.g installing on site:. This ►rleastllre sum � ,
the developer; wvould enable residents to register t .9 sted by
calls for enmer gene
medical) rapidly with the project securityis y raid (police, fire,,
patrol (or proposed voltantoer fine departn^ont),
and would: further raise the level o£ police protection in the project,
Schools ,
Since capacity now exists for 830-930 scthool-age children (grades K-42) inthe Chico
Schools, and the Bidwelllleibhts project would add approYirt�a
children per household)tely 190 children at 0.5
, this project alone would not strain or exceed the ;schools"
Capacities: Howvever, this ` • �� r
pt- addition, if accompanied by those of other lare.
residential projects either existing or proposed, mRy result in overcroWdin of on
more of the. schools. � e or
litif;tion
ExUanswon funds for buil diti a no�
t,, school,, expansion of preserrt school sites,
and/or busi;no of ;atudents mtL.,t coale from a cooperative effort on the' past of the t.
deve]ooers, lax`ojec.t residents and citizens of the Chico Un tied School Di;•,trict.
M i7MITIES IMPACT
The four utilities. needed by the project would be telephone ser�l
ieWater selectricity,
and sevaae dispostal system
maintenance. Natural �'
by the utility, those residents desirin r bas WoUld not be supplied
€, aas would supply their oWn fuel from one iof the
local bottle; gas companies,
Telrrp`tone
Pacific "i'eleph nc Campzny foresees no problems in ability to serve the t•o"ect fro
the line's thM maintain tiloni�, p 3 m
�igh'aY 3?. Uetermiiat►on of telephone line Ioca`tions
wi;tihin the project and -financial arrarigetnent,s betwocn thea Telephone Cant a►i ace
deVelopoa• for covering in5tf►llfttion c'o5ts w�rould, .take plttcc After fills Bevel p y nd th4
ar firm and the detailed sub;iiv tion rnn4►las have hest► p ent plans
�� l_
C rVectrz+;.`icy
Pacific C118:3 Find l:lec:tric Campa.ny (P G & l) W0016 have LN.' cylapas:ity"to supply
electricity to the projer-st a',ing the existing pol erlino on site. Tj,.I sir requirements
include undergroundin Of utilities with a sing1te-family dwelling on u intircel less than
thio acres .in size_ Thit; wot,.ld app tri the paviceL. to ,b ;:caned 88.1 - to tiny othe
pt:rrc.0s with pothntinl .for future subdivision to b<<low threez. >;Vk, i,,areo and to the 4b--
no>~e Pa%ol:n to bo zo iPd VA -0 :villi rn}.rlcipk uwt-3. Powor An:ry ilavo- to i)p unclegrounded
froth the supply line to the cl.usie:rs; as �.ltetl ,tts Within the clusters. However, these
arrangements would be made in discussions bntweon the developer and P C, & E's New,.
rwilding Representative after firm, de'tailtd:subdivision rnaps are eoaiptate. Althouail no I
ational requirements are apparent under County zoning > e rWatirrtis, any such local
ordiqanc;es would have to be ohecked at the time of discussions with I? C & 'EJ as ^,ounty
requirements supersede those of,P G & E,
A concerti for availability of power, qptrtnally in the' summer months of peak I
derran+l, has resulted in a policy set lay the California Public 'Utilities Commission
(CVUC) that the developer rather than the ratepayer shotild bear the cost of supplying �
power at the initial stages of development plannitnr;, The developer must have a letter
( from F 0 V .stating that 'financial arrangements have been mad. to pay for the power.
These arrange nerits Would be made after subdivision maps are complete;, This CPTJTC
poli cy on devr eloper financingof power` Nubbly rerlects the cumulativt' nature of the
impacts of development proposals on avedleability of power supply. White the Bid yell `
Heights project alone would not striain the utility, it, is part of the projected demand
Which together represent considerable allocation of resources for the Northern
Sacramento valley+
14T,.`IGATIO : A ten foot .
setba4,lc f.co,n h'rie contirl.izte of the 'power, line ;is to ,be
enforced for d%qplling urt.i. is wk ti vit-1 lo.
L.
Water Supply
Water w6u-td be supplied to all project residences through the mutual water
company, Bu'r Tail Plater Works, whose service area bou;uleries coincide at present with
the property in'chided in this report, hrid Mitch now op�r 'tes the two wells on site. M0re
Wells +1a�ald he dv,xKr:loped by the y�iate r c�nrn inn 4� necced. x,11 wells would bN part of ari
entire inter�emil necterl s,zti4etn tinrotigt cant tltt propertyAll residr�rcc:cs s��ould` be served
by :a piped watev ys'tem, with no I n el 1,V 1 (11 ia - I The dev=eloper would provide. pipcgs to
the )ots) and each hctmeov,rnev, 4 0tild pay t fuse to, hook itp to the -Maim pl fpes, i
t
Water supply should be more than adequate for the develapmurt as proposed. At
about 625 gal/day consumption, 385 reside nc:c4s would need 240,625 [pal/clay; the existing'
large well can supply 225 gal/min. or about 324,000 gal/day, more thati the supply needed
j foto domestic consumption. The e\c 8ss supply in this and other wcj►I.;t would be available
for fire, protection, Gtt��rc�tticczpa(,i.ty� i9 an eoHhr r� (•cl 34,000 gallonn
The quality of the, water in the existing wells meets all standards for pntabl6 tiv&ter
Suppty. Results of tests done by Mor`tirch %abs of Chico (seg; Appendix l) are err file with
the State Corporation Commissioner and the County I°Iealth lepat•trntwrrt
Sewage Disposal
Project residents would be responsible for proper sewage disposal in the individual or
combined septic tank -leach field systems through a Sewage T isposal Maintenance
District. This District is a means proposed by the developer to ensure t, hat sewage
disposal in the septage areas identified as acceptable by the County Health Department
would continue to operate in a mariner acceptable to the Health Department. Under
terms of the District ag,teem'ent, the Health Department would be able to inspect the
septic,tanks and leach lines periodically, notifying homeowners or (in PA -C areas)
r 11omeowners, Associations ofany malfunction or improper condition, and] Ila e it
corrected at the owneres expense ifthey did not correct it within an agreed-upon time
period. Thu; through initial approval o1 1f septzge areas before development and on-going
authority to monitor and make r, pairs; the disposal of project sewage should be done in n
y prevents environmental ealth hazard (see also the
_manner that: tal contamination and h
section an Water Quality/Public, Health Impacts).
T esidential use of this site is likely to result in the following energy impacts;
thout an
t ( yoffset
, t
Asst;ming a maximum buildout of 385 homes usingelectric h�ea wi
for likely solar installations) the worst cAse for electric: consumption will,be a total of
f
5,8 millioit kilowatt-hours per, ye-,qr. Gasoline consumption lot' commuting (assuming 7
P On per residence, ten rllRes per trip ens], arld 25 mites per gallon per u�hicle) wiL'
total 303,47'0 gallons per year.
�pypical tijater usaga by metered residential hu5ton"er in hic:o (1810 gtil/month/
resident divided by 3Q cittys/tronth7-C;enc� Grt,nt, Calfcrriix �+Tr�ter fiervice Cxornpnny.
3
�.
s r� fat
t in. ulatlon,
f, *�ol�r, r�i�rrrt,3
i`it� ,�tttira , ' ?Voj cC,t and the �
ti, me.,sures vlould include t;�trtt t�1`� dbt stun botwt,elx t. ' 7'
patio, i
j�(Iltli, ° El STt1f111 oon}I?a t[i 1,;"tl ctil" I i Vio 1 on ry
t o� c,za���� �
rl e tcYl4;larner, _ , I
F
it tui t'.'Cot�l� to f"tl�t.• ,� �t��r� i C%rstl i,ra �;ect�°n
l �iaa�a y 1 va,', 7 t bit. v{ j
13iattc' > x .;
` 6 ,
Pie
I.11 tea.
i i i l' `Ids ter. SIC.,'�diF?SG1��1''
' ur n enyironmerits have be
C'1 p I
� - cera the physieFal. itnd of sucks
The follb"{vin;
project oottlota up nota aroul�l not be to sin
11XStaa1 i tltit �CI'�e!'5e ICf1p , I
�t,� ' n,tq►ific.ant red to brine them
r t tikroLll�.j be, reclui
cv:3luated y msti sai,ton h been
" ;llb �,rintitl e ,Urex
i t tl5i;y i1r qn[ �aitu<le UlA " Y some' lnittoi tion Xn c 3Ve
able level,
h4YeVe�, in t:ertFdjl nrc�?s p" es ecially an
acc.ep t,eveniatve m�tntz�na4�c:e oflc�tiY imp�ct lev.,ls, p
rcc:otnmended szmplt for p
a rtes;.
{ ew of, cao�ter tial. doe adders e curnultt,t ve-
imt�
ff 140tiatficarat.
erievaon.
�..e'�positre or noise gLi_
t,oB�qGe or estruetion of Cultural
3. �jate�rQua1ity
e cadation.
pollution of surface Vjaters by
a'ra runoff.
or s
ail frtom illede�uate sax]:s kor;septcge•
pollution Ot d roUradti�; at;t.t'
b:. i
,Jt,,ations in drairaaf�e patter;ts,
,.Volumes rnai3i.tys,1�iepto imperrviausuf�oesSanto,.,ta>
Incease in ttnoff ht h the �carptiarthe
b. (Mat
an 1ocl
I
Way i.ntasectioR
rzlld �vithin
5til�casion/3kAeam ;�i:tation,
T t r� l,o,�� ate sr�taoas� alit
I ere ase in ser ri�e , m. M ysten�s (Gmpact on sYa' Y -to
E. Ing r il•
in ; rVic 1ci€a�l an 4�` -T-
ter/
kY, vS -)
.0 4�
ke
l 1%•7J,�;J l`l �j°-"�y:CF fZ i/.l � tI. Ifld 1M.{;A1 Il��: �•I rL j OF dpi V,.;)d±.J .11 C r.�j In its' UCrdeVPloedS(1tte, tile raj('et S;tt, has vall're as Wildlife haw
tat this value will be rcduct d snitr; (,attt k trzt and wakcr,shotly
u .r til'rr Co1V:..'x`.�iort to
.Y'E�,:iClk:n�i,�:l.
construction, the site Will take on 101I.—term
Offr��ring themen.ities
v lue tLs a locrttion for t•ur tl harnesites
Of coun't.,y livin�; an the fringes cif. the Chico urbrn
The preserv�tt:ott of abricult�rt'•rtl l�n.nd On the WeSterh sid:� arca.
az•ea has lanU been a sttterl �r of th�� C�ltico urt�Arti:�eri I
Uoal of plannPr•w� t;trtti c�ar;7rntrr�itq re,i*t,.;rtF;; ttli.i;e.: rl,o protect
the fertile and productive a-viculturrrl lr,rtds the �;"T , p
considered ' for development, if wildlife
.Ind,t+tlt�rs}1 �t:at of Ghiro have Faecin
v
The praj ralues calf be preserved,_
t is located primarily in chaparral, a vegetal on cort7i
Y• �. review of the vegetation represented in Butte Count -Aura ty which is tivell I
rna� ,
update of the Land Case l;lerttent of the Butte P, ptedaved for the 197D
approximatelyG� ti
.,400 gats of chaparral t:;re rose y e'
p nth �Urlt Gcr7er�1 Flan indre�t�
Apptoximately half of this area -- the Butte ,county foothiLIS. I
that portion lying north and %vnat_of
paradise -.. is protected by the 40 -ac, minin�uri� parcel si�t� � .�, the Town of
Crazing Land Use category. Tile rernaittder is desi,nated al-mostsp..crAted in the Open and
Residential, 101"ina it exposed to small -parcel developmett, -,hose charrQrt,
y Artcu,lttrral-
within the Central Butte Study ;arca (tor which a zoning Studyal areas lyinf;
areas near Oroville and to thy: southeast slioul+] be reviewed so theIs n del vay) and those
habitat can be,suitably protected: able Chaparral
The Bidwell Heights Project"
Les within all .area desitn�.�e��. i`o,t' �lx�ictitltttral �
h��eident alae, 1
to 4o acre, per_dwAling unit, stdjoinita
Protected Chaparral whicl is designated at'i operi and gre�;�:x�g.a .?orf`L 'expanse of �
1i,fe Mbi tat traul,d repre.sei�t about the' a , s o f this tri J_d-
..stirr,�t�,d Gi+,gtlp aces of Chaparral
in tee t'oothi,l,'ts of Butte Coutt�y.
Watershed values on the 'project rite lthau.l .,
preserved to a re��t e:c�ent b r ' , 0h rcrluoccl b;� dovelo stent
g y to Fdn'ing span areas ti pl ,will be
Cluster development attei•ns. tri acP project rni�rgatior► measures and
p J rtt
areas will remain in 4t7 ac re
yh. minimum parcel
k�5 t fa e.._x
a Open JazYtrl Iles xnc wiorr.
Same Short-term comrjtme,7t,i
of resottrc� r.il1 occur during the construction
he,� �'�hen fuer, labri�r and ttGrilciinr� J,
r, m�ateriMwls will be, p�.it to bcrt,�ficiat .use.
lon;;cr ferret encs In the
g_' tt
t• for otne h��atins� incl trate w
t, t,�port;Ation Nick 1,tt�d i`ort
.It to
' t used on tr;� on-�e,�}ratn basis � Chica '4vr(l b
Sc� nig clua►litie
ellkaparr� ! it ch r ,. ! a the .Mite WIM
vrnl 2 1 CI? �attx �
pw rttet p s c.cl daith ltOme8i i ,�., irotrt rYr�tttrat
r and rr�.�id::r;tiati 1r�rrc�c�tp�ittg:
t+�
X. CCRL WIM-1`I` DUGING IMPACTS �
Approval of this project could result in growth on several front,;. The tax base of
the County would increase by the amount of the assessed valuation of, the project, with
corresponding amounts of taxes becoming collectable. ;
Subdivisions- in adjoining areas to the north mid south could hc� facilitated by the
Precedent of this approval, together with the unproved access, the public water system,
the local public services (Lire protection, security guard), and thu utility extensions
(power, telephone, television cable) which will be established to serve the Bidwell
g p p
Heights development., Improved road access alre ady exists, and is not contingent upon
project approval. To the extent possible; the developers of Bidwell Heights would like to
limit recess to
adjoining adJ`properties to e �ergency access only to rnallitain a degree of
a
privacy. To the extent they are successful, subdivisions to the east; and west of this
project have independent access and are not dependent on this approval. Such projects
are physically isolated by steep canyon walls and are therefore so►hewhat isolated from ,.
the giowth-inducing effects of this project. In any ease, such developments would be
mjich less dense clue to steep topography and sewage disposal constraints.
"There are currently two other projects underway in the vicinity- Canyon
hark Estatoe, a Specific Tien, PA -C Rezone and Tentative Subdivision, proposes
parcels ed in Section it --15, T221 ,
10 xo.sideni,ial a. eels on .1050 acres � �t ;i � ].cat
112E The other pro iee t for Isom-lla11 ha s not been submitted to th.e County of
Butte for review yet. An estimated 110 to .1.25 rer:tdential. :Lots are proposed on
the6Q acre: .sate in Sections 1, , 1.1 and 1 T22N RP For reference, the
i
Bidwell Heights project is in ections 6 7 and 181 T22N, 183E and Section 12,
T22N, 12@5 ,
The total proposed population from the three pro jectU Within c1 ose Proximity,
lo in 620 dwelling units ► . Tete total number of.
is ap xaa: mately 1620 peop
dwelling' units is spremilative:at this point. The figure of 2.61 persons per
house'nolcl (10 Cntts f�tr)` was its-�1 to arrive at rhe '.fa;4ire of '7620 persons. 1
Bidwell Hoights 11101.11d cont;i°ibtctt .haus; 1 , 700 perso► s to hatr total.
> t should d, a so he rioted that tkl'e faux Lc, Mile flo►tso ezarie and Subdivision
wit Ladd to the ctttriulat ive. e ffec hs par t �r.c►tlarly tr�a t`i c onto lii h� ay 32 toward.
0h i ca : This 21 dtve , i t3 unit' propo43,a.1 L3 on a 16`8 acre + s i i e adjacent ' to
e of Chico.
Fligh�aay 32, ab at 14 ►t► les not Lhr-as
J
fitter,-Departmental r elnaran n