6805 LA COSTA AVENUE EMERGENCY DESILTING BASIN
N LA �oSTA A v e "
E ME R GENCY �r� M �1 �/ NOTES
/ Jr,U�I"�a[ e��� /�
E M 5 m q E N C y �E � Id CN 1 '✓/'r5 t (� L A C 5 A vE N 7. 100 -year Water Surface Elevation (WSEL) at spillway
is about 18 feet; however, assuming
1.0% gradient through the basin (— 330 feet to western Ed the maximum 100 -year WSEL
B Edge)
~ ' y '•'"" ""'"'� w ~^ `~ f' � downstream side,
is about 21.3 feet at the western edge. Therefore, freeboard t feet at upstream side and 2 feet
„ �,,.. F i a •\
S )
DEBRI RP�KCR &tr (� fl�fit
" r os - a3- o\S
- F ED PVC 3 6 f1 C M P Asep
I f X / .� v / /� ww/r M� N " ��,,,.>+" m.♦,..n u v (.nf.`n•ry � � s 16.0 C)
Y Wi n, ; "' _ �. ,.. +. • " . Ad
GRAVEL
., - >r ,,,....- .....,« ....»...,,,,. .„,,.,. /'�r^'� / .�r,,,..,'.,W ,.,W^ :wr".r "..... Z_ •-+ �K : 30 ,... txr ' . "V•
W
..r.,,_ ".wW'" �. �.. ".�,�,..._' >. •�." ,. " "� M;:.. "..... G R .�>""" w'�' o
...♦♦„ „. •.n,r '`',� ^ n+.^" "^ " " Y..>^"" r:r•^'.«�•^^"""w" ♦Y� 4 �.�^' '�.ye^ "'r..+"' " �r dt, j ..,...,. f/' J'� r e+ f",l�r! , w ,`5 /
/I. �II' f / 1 1 •".'---.....-•..--.....-•--. �.-..•.--,. �...-..- �, .— ....- ,..«.+— ..�. «..,...... -. �. r
�.Wwwm. ✓ µMnn^„x`.r " ">"`n'V'•+ M..♦.w.u..• .n r+""r'„ "M,.w+v. �. �1 �• „ tIY� _ ,. ,.,,•"♦' W
s Ott
v, -, W,w, ♦ ,.,,,♦..♦.,,^`..v+•'r' " w:, nrM".wun • 'A '" " f�IJI'" "`•. JVr �W ^ „n••,
�, �' . O n �. /' /` .F:,•'>l'r.,;✓: M' ..,.;win•'„♦„; ��C��'• wfJv
M,._,_w ,,.W..” �� •�. ��2 ;.:.,.:.wk:w.w "+� ��,,.. '�" frr ° ✓.�`w:�.� ♦.;; M.,
� L
. ♦.t�:;�,....,..�n. 'SO
. ••^.,., w.,.,.,, ♦.,.wn......,,,...+.,...,....,. . "- . ^,........♦« . ,..ms . ".V """ ♦•..r ,, tt% �; ��:�..,..•M l y
"" . t Si
A
.,r•'r'.'n"'r"r ✓ ..+" """.,, ".•.,..w.wn-•^""'" � ♦ .».. , • �-`` De r
�Y{�
,,,,,." _ ..r -r'•"" . �" ....• if�� � /// fff �(/ / ,` 2 r o e
�]���•••... /
.,.n...•.'""". „",,,.. rw"...,.. ^" i` = J } fS r / 5 ` / i' .fr.;••. "^' ��� R�� ✓ �� �i�
." r r r• ar^ Sr / , fJ rrjr - w;
�w«"`•^` �"'' : J M �„ ... .� t J •` {> + ..y+M'T S r f,{� >€ij, /3�l S,fl i)£/ ��� ! /� ^...�'^'�.._•
`
•K`.,.�,.t". ✓,„ ,.,'✓ ,� ;ti7 /•+; af, � _` % ' ZZ % k x � t t, f / S f F( � if�} �' j t''� f �� �� �j 6 n }��.r/'
�'�" y
�� ;r# ' •'+� i n J .�,. ` ! ! . y ' t d f ► I J rr < I , e <"., 7 / /{.•, `� / / , 6#
f�,,r^Jr ....�"' 7J6 n `!�..`•` .J %,>,�..,.,:. , 5 # Jj 3.�i'ffit i��jJl,�y`'jjf,{t�ljf::^,,. ! ^^Q
ti.. "�•:•"^.>. / I' in G'oI X41'.,, 3:` >'� Jr dlrPdj f }ri ♦ •'{ r % 5 �' R oo g {I
"'. ~'"` w �/'! ✓" tB �jr ' ", ...+ ! , •t ry '"-,. } y; " :jFF f'�rr+ j`� /� >�,f r jf= t •
(
'+�. ti R rV T IA I C P) ?F 7 • l�ll
4 11 �...' !; �` .s '� <r ,< �, F, � .r r ' >'" FLOG �� Eft P LASTIC
�.� �-� ,� ,. J. /� .i' � ; � � / r j t j ,� J ,r .
"•w. ✓ - .N.- ,.. ` r • t
• \ a V �„�,,,
" , t r j p , y€� f N ffRFo k'F►TED CAP APT 50 . o _
♦„~ .y-- w..,,,.. " ,.r`" w'^''�.+ � ..�," i ,:fin♦..,... t' £ �.,. ( ; J �J'Tl J r �7 '•• � �I �� 5' �ry
1 . /� . 6
"^+ti"M•„~'�`�w.,,._ wN,,,,,,,,,,.J' ` f��Jr`''M �` w t 2 ...,,�, 1'� t \ 1 / j� J >r rj ��JSII+ I`JI7! f � , %p / t
1 V lit t 1 V
� "„y `'.•; "`*vN,w`^r,._ w..`..r. �>l l` ^+, �.^ /�I£ /// i�9f r j'� t ' "f Gl -
`^"'.+.�.i• -,--
".,,,,~tiM` ,., „"~..,, ✓r,,,r tiV . .v .,ti '1 lI l > •t / ,t.rl' rfi tf sJf , L•
, 1
f€.�; ;%l >'f�f�� >;< SECT)01u1 A-14 (N'r) oR B�xK ►o �t
r \ ✓ }t � . f. I
w„ ..ww.,.. ..•,rw...n.„w, ,µ\ e: }• f'' t/'`f•1 >j7 () >, j f/ ;t`t /J.'tj ! r ,p -
) > f : !lfst:. /r lir f F! (73' a'� fS+l�
` w ' �`'•' .✓.., ." / .` 4 f IJFJJ / f ! >•�J>! I t
J : . }'r: f t ,, , ; f/ PE,o Pc�ast�c M6 "" �\ w�_` h "2l� w • w »!if'€f �. I't�r
€ }; j !f. fJ ♦ ' /! jf /``' yj
M u.,�"�� w�.,.♦.^+."C '�n '^ {`.`...'"^.,' � t Y ` F "fff t .E�,? ,rt( ell
,�"`�� w w `. , " "_rw1► N �. • ;..�.. '" £ i j is r<rf i `> !,:f / #r /� %Y✓ So PI� LWY DC
TI; I'L5 (AIT$) S6Q -C -3250 Concr
or Air PI Concrete.
i-
oced
"""'w ,.nom,.,`,"``+. ...- ..,.,.,......:-w`�•,� 1** "\ .. , ,f, #' r 1Y 5l e
,♦ { l\ w......• .w ,r,ww ♦• vm.: f <t'>! (( ' jff L 0
� ` `"•>, Y w..•...,...„..,..wn,•.•. "�, ', 4 :.. .,.w. -. n • ..♦ .. .,+'. > f ' `�i. ' r� ' l '>� � T,Jt� •' ♦ �
/ t T 1 �4 � •"'+
• w
' i�i r Q
"" ^,, �.•- °° �* , „`...� " «. w�,w „ I : rr... -" rF `> # >1 J f13` ' ,.a> r` ) tr1F i I()
€. 1 1 gage ww. 1.
�-, �°`� \ .r_w".., -nr _.� }f�t: :; > ,,}.� ,•: �', !f!;`��` {��� � 1 tE �
R with 6x6
,.`,'n w..'.`n♦.�',r,N \. \ \� .. `e f A rj`(,j tfe rF,,,
•\."."`�,� . mow " ` "Y `�'^ \�� �'�,.......� .7..��•.,....,...,� ; �, E iif� #i a'f #'i}i #r'i a Pf , f > J j J r - I' >:.�
_ ''Y �I n /�dryry 20 ft, I t
, x t €r +, j J fi r, KJ•' L -�( , G`•'
„'"."`• ,. t ...�^"- .,>/ ; J ff s: #s sl; s # + }' #rk; + k�i r '� > >/ % >� r 'f • �fr
`� ,;,`•^.. "'�, �'1 CL 6 _ � > -lG. ♦�, r'i' f�`. 1 �", '}'�
�'... ,», .......,....n.,..,•:.......,. ->,! .....♦•.. ./' # y f. <., . 3 i..JJ,••r.! >. j
"" 1'1 \ \�. ; .s'�. „J f ## # #s 1 f ;i s 1> >. �, r — _�. __ _
° `"`o�� as ` �� ,r`^^"' r•" fs #� ' ' ; <> & > ;;Ft'ss�s' �J�j {! ?:��fir� ff j '! � _ � tl � 1
`"" ?l ; ,,.r.•n"" f f f; # # ;�;3 t ' >>f f `f t = tit ;i:i :t�.i?frx >l•'Jl,'.'tl. ` 1 f / �7 #,..�•__ / \
�Ywtw�/fi'4�
..^,'"`.,,•,,,, Y� r N" # .f f1rr:.3 > : E ' ' r i• lr 1 •fEEE ,, > r•, -
`. �'��.` ;���, �Z ♦.•.`.,,,................ n,..^ w „.,.w...,,.,- ..,........,.,.ti� n ,,.,.•. ♦” .i f�f:t Ts' >s� >ss #'•� i�s£:rE� ? tt.zz.,ss �
!� t.�y v
� ., ,Y " " f £ # {f`3 ## < € f °##' : ' ': t € j • ti i E: a3 #<t € F� {'t �•.� a e L - !
11 J.' SoU VO/
1 t b11 1 . >.
NOTES ,,,� ��°` ���� � �` ��� �n _ • `
�s ?"y``;. ....,.,... n,...,.... .,,.•.... " ".n... a ,/" ". NN ,„,r`'`f �Efi�s if#£�f €�:.. - `�` {- Ii . � € €� ?i ?i' >. �a ° ``,"�Q±.~'•\`,
� -' �
\ , . r r' l�f �� •'�1'�'�:�il' °1��I:I ;Ft.:,t,i.. ;i�,�. ���.,,�; a,
p l� If I�
` .......,.,.,...... , „'`.: !".+,w""'nr>55:, <t kt?lilEiiiilik`'. ?. .I ..•11:3 { {E=I < ;Eitktl {ik ;saa '"` / Ot
I
d d €'a4 ; > a:. a s tl �'$• s F .; .:. 1•::.? t ,. "'�..::`: b 1 1 1� R
I. Provide l2 feet wide access road from elevation 22.3 feet at the west -side to an elevation of „ ,,rf ,,r°``,f- >�i)1i itlktal=t��S ? 1�1 ���€ ��: �I{ �al�;x��s�
}=a�'�tz��; ;�'�� °�„ `.�; � O r ,� _
20 feet at the east side. ( Along this access road match existing levations for the northern
2k Clr!
\ $ > $ / :' F; Eii r fS ti ;tt��r i ��"
edge of road, cut towards basin).
i i M / ! ,J ,' >a filE : ;.'k41•..'Q €x2 �,, a ' " ry .',-
• ' / f' ✓ t ` ,'' 3 E £ [ NOTE: All work shall conform to these drawings, special CvToW WALL
2. Provide 12 feet wide access ramp road at 14% grade from Elevation 22.3 feet (min) to i 's / r' s't a = ° ` ``
}} # g p provisions, and all applicable 6 [ !�
s a 3i' 3: € ai wi.- San Die go Regional SIB TA�Ir! R� 7
E € �`: �tl' > >.w„' °••. - g g'onal Standard Drawings and Cal Trans Standard Specifications.
� � {a.
r
elevation 12.2 feet. i l t ' ] { ` Eia ;liil' ti M ,
i , t > ,ii €`•If1�1 41 ;a i i3 `�.,,..�.�''�
t ,
: # ri + I "t igi {a ` w "� 1#1!)I f ZFb'
3. Provide 12 feet wide access road at roughly existing grade. (The outside edge of this access > } : q t Sfj # ?1. »•• ""
pQ �i1�
road is approximately located at the edge of the thicker brush/tree line. The inside edge of � t J i }.:# f'£� � • '
this road will act as the basin, per the slopes depicted on the plan).
> � }} $ /fpy{ n/, A j ' t 1,;Y F+ n ♦w •m ..." , n..W w'~ ",, 'M1.
' i . � 2 �' • E f �` .f l >t J .1" f " ,>7 { { ' Y �' "`< �`' � a ` l .. `'.`"+.n '�``^�,, ^, 1 `
4.. Provide 12 feet wide buffer form edge of tree line (may function as future access road), `a, lijI (
irk�sl,+6'#£ %S: r' t _ g j �'G l 't
ene spillway structure with crest elevation s at l7 fee to elevation is at 20 feet. a "s.'. f i l s / € ; 1
$ Y P Y l i i f , P �`;_: ss.s3i
5. Emergency � f � f T � i 3
s
See Details s•�!sifr #t/ j f < t ; ; f
6. Grade area to accommodate access to the northern access road, the western access road, and �' ,i 11 }fit :� f s €
4 TOP POSTS
# f
,`
the access ramp to the bottom of the basin. The "top of Basin" should be at an elevation f# f si • � � ; � � � 1 �
SER DIA. � SIDES
TO END PnSTS
no less than elevation 22,3 fat at this location. `* ") t ° `' E ;
Possible Sequence of Construction: , }sisz�zl • , '1 }' ;» ; 3 : k , ; ' w "; P 8'L1fF CA/P
€ �
TO MATCH i. > t"?Z�'� R`sL4�s 'i11 t: � : i ' i* i > i 't..:n.." " £
; OIAflETER
A �s' >.t,.�;i;3, :i, :, ; 4 _.,�xa� i s I t 2 6" cACVIN STEEL OF RISER
I. Construct western onion of basin first, allowin runoff from the existin 4 "� t # i # 1 ; t ��
�' EX PLATE
p ath towards the existi $ b
channel to continue on its normal culvert crossm ' POSTS
i �s� iY2_�ti••^,",,...n.,a.....•,.; ;� :1. ' 'r 7j f 2f� � n # � E i +1.`fl .... -. �`�� „����\
.ka � t
, 2. Then, construct the eastern most portion of the project site, including the ` i
,
f #, f > t s r SP"ELD EACH
area that will be graded to dram from the existing spillway, as well as the proposed spillway. #!(t4 ff # .f f ," �•, < J ' �r >1/
�� "THK POST 4 PLACES
4 ` t N I dJfIy , �"
1 3. Lastly, perform the remaining grading to connect the two work zones, continuing S
1 to employ all sediment and erosion control measures to help prevent sediment runoff from the site . fs'ft•
J \
Additional Note — A combination of vi ueen and ravel bags may be utilized to te stabilize the channel inflow to the {# `•a ;: a
@'BAIyD COUPLER sq $ $ Y P Y O
L PER CAL t t t TRANS
{ proposed spillway). ,P ' �' "i1 4 �� EVENLY SPACED PBS7 - S
basin, and the channel outflow from the basin the ro osed s illwa However, p measures will need to 1 4 \ <
STD
f,f a
v ` °� :� � 3"' LONG 6" � .C.USE '
C71MC D-97 / 4 2X2wXJ46• DVACNP RISER
be considered.
Z'1 OR !t•ii isi• "r;
_. AWE �ALYAWZED STEEL
t NOTESs PER PLAN
f.L A� A FIT A
P. SEE CALTRANS STD DING D-% FOR
R s.
D/NENSMS OR IX7ALS NOT SHMN.
DEBRIS RACK CAGE W /ANTI- VORTEX PLATE
t '
NO SCALE
.J i
CHANGE ND. DESCRIPTION APPROVED DATE BENCHMARK SCALE SPECIAL DISTRICT APPROVAL DESIGNED BY: I DRAWN BY: CHECKED BY: ENGINEERING
DEPARTMENT APPROVALS CITY OF ENCINITAS - ENGINEERING SERVICES DEPARTMENT DRAWING NO.
PLANS PREPARED UNDER SUPERVISION OF RECOMMENDED: APPROVED:
GRADING PLAN FOR:
DESCRIPTION:
LOCATION: HORIZONTAL: NTS DATE: LA COSTA AVENUE EMERGENCY DESILTING BASIN 46
RECORD FROM: CITY OF ENCINITAS
ELEVATION: VERTICAL: NTS R.C.E. NO.:
DATUM: NAVD88 216- 110 -42 & 216 - 540 -23
EXP.: DATE DATE SHEET 1 OF 1