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2000-6608 CN/G/PE E GINEERING SER VICES DEPARTMENT City o Capital Improvement Projects Encinitas p p _ District Support Services Field Operations Sand Rep lenishment/Stormwater Compliance Subdivision Engineering Traffic Engineering March 8, 2002 Attn: Branch Manager San Diego County Credit Union 10715 Sorrento Valley Road San Diego, CA 92121 RE: Jamie Lutz, David Goyner 1715 Haydn Drive Case 00 -112 V /ADR/CDP APN 260- 279 -14 Grading Permit 6608 -GI Final release of security Permit 6608- GI authorized earthwork, private drainage improvements, and erosion control, all as necessary to build described project. Final, acceptance, and warranty inspections have all been completed to the satisfaction of the Field Operations Division. Therefore, release of the security deposit is merited. The following Certificate of Deposit Account has been cancelled by the Financial Services Manager and is hereby released for payment to the depositor. Account # 0138320246 -40 in the amount of $ 15,000.00. The document originals are enclosed. Should you have any questions or concerns, please contact Debra Geishart at (760) 633 -2779 or in writing, attention the Engineering Department. Sincerely, ~� Masih Maher Leslie Suelter Senior Civil Engineer Financial Services Manager Subdivision Engineering Financial Services CC: Leslie Sucher, Financial Services Manager Jamie Lutz, David Goyner File 11, 111 A\rnur i.nrina.n .i'u���rnri `:_ -a�.;; Tlii) - ��n- r,ii - - yin recycled paper • Civil Engineering Land Planning • Structural • Surveying August 28, 2000 City of Encinitas Engineering Department RE: HYDROLOGY EVALUATION — THE LUTZ /GONYER RESIDENCE CORNER OF HAYDN & LISZT - CARDIFF A.P.N. 260- 279 -14 Please allow this letter to serve as a hydrology evaluation for the subject residential grading plan. This firm had processed and received approval of a grading plan (Drawing No. 0395 -G) for the subject parcel in 1990. There have been no changes to the topography or hydrology since that time. Please find attached the hydrology study that was performed by this firm in 1990 and approved by the City. The drainage basin for the runoff onto and through the site is 0.3 acres. Assuming urban drainage design, it is conservatively estimated that the 100 -year storm over the graded portion of this lot is no more than 1.1 cfs. It is our professional opinion that typical drainage devises utilized for single family residential construction, i.e., sheet flow, swales, berms and area drains will be adequate to handle the anticipated drainage for these sites. A sump pump, which will be designed and installed by others, will pump the driveway drainage onto Haydn Drive. Ultimately, all of the drainage will be routed toward its natural direction of drainage, which is Haydn Drive. As Engineer of Work for this residential grading plan, we respectively request your acceptance of this hydrology evaluation. Should you have any questions or comments, please fee e to contact this office or respond, as such, with plan check comments. Sinc ely, LO AN GINEERING Q PoF ESS /ON E. F �m C 39726 � 1 EXP• 12 -31 -01 ouglas E. Logan, R.C.E. 39726 '� Principal T9r of I ca Attachment PMB -N • 132 N. El Camino Real • Encinitas, CA 92024 Phone 858 -756 -8696 • Fax 858 - 756 -8698 WGAN ENGINEERING 465 First Street, Suite A Encinitas, CA 92024 619 -942 -8474 JULY 11, 1990 1 OF 2 HYDROLOGY STUDY FOR THE HAYDN & LISZT RESIDENCE DESCRIPTION• SOUTH CORNER OF HAYDN & LISZT CARDIFF, CA 92007 APN 260 - 276 -01 O V ?,OFESS /p� OWNER /PERMITTEE: ��� ��� E• C C F A Q " L & Y INTERESTS, INC. w m � C 39726 rn 12770 HIGH BLUFFS DRIVE * Exp. 12 -31 -01 SAN DIEGO, CA 92130 619 - 481 -1332 9TF cm\. aQt`P OF MY ENGINEER• LOGAN ENGINEERING 465 FIRST ST., STEZA ENCINITAS, CA 920 619 - 942 -8474 R. .E. 3026 EXP. DATE 12 -31 -93 �o z - DO516� ?ee �S:P. Cou'AT - Des(6J � e Pf?OCGDJ(Z� MA�UW' -- V *Ti l kt, Nth- v Q A izc4 D.3 AC �,�- I�� �= lam, D.12 :r;: 6,6 IO / HIZ k o u 'CT . {�{ �2 IkJ u C Co►.l Cl, � SI o� ©fA L-q UJ l,-TY2 I 'rat 5 S ITE (� �'� (,J tc � J �2-�► art ,L 64 -511E - PrzkW AGE 5' vt ,�,� G2�SS- Ll�ltD - kL65, kaeA prtm 4 s, oTO- A�- Arc c9i Te . 1 TABLE 2 RUNOFF COEFFICIENTS (RATIONAL METHOD) DEVELOPED AREAS (URBAN) Coefficient, C Solt Group (1) Land Use _ A B C 0 Residential: - Single Family .40 .45 .50 .55 Multi -Units .45 .50 .60 .70 Mobile homes .45 .50 .55 ..65 Rural (lots greater than 1/2 acre) .30 ..35 .40 .45 Comnercial( . .75 .80 .85 80% Impervious Industrial ( .80 .85 .90 .95 90`6 Impervious NOTES; (1) Soil'Group mans are available at the offices of the Department of Public Morks. ( actual conditions.deviate significantly from the tabulated impervious- ness values of 80% or 90%, the values given for coefficient C. may be revised by multiplying 80% or 90% by the ratio of actual imperviousness to the tabulated imperviousness. However, in no case shall the final coefficient be less than 0.50. ..For example:. -..Consider commercial property on D soil. group. Actual imperviousness 50% Tabulated imperviousness 80% Revised C 800 x 0.85 0.53 . IV-A-9 APPENDIX IX -B Rev. S /81 O O � 4 4- Z7 r-C NOO w F - O , r V1 A ?. L � K r- 'a O W ~ O >bw u 'O a >f Ln A3 r 4-J > X r• 7 X #a PO t O 7 N O O u C' >w- N sJ Lcc c�1agC- •� o o w wa' a1 v- =I a In r.: L L a e oc a 1 � ra 4., .a (V .- a V -� U N v� a a to *a a a .•, cr d u= E �• v v c 't7 L N • IO CCs O a. N • a1C L 7 O C _ O N N r a! ♦_/ L O O N 1/1 r- C a a1 'v Cl = fa r r .c C to O • . 41 w C3 4j 4j 4 � 4j 41 C i- • S. C L4J 4J 4 t C ea C L r 1p O r -r r CT r as u 0 0 L C 'O u= Cs. c m r . V C r d a1-• • r •t O r- ++ u L . u u L r a1 a1 • r- CL {� N C M a C r G 4 G � LL a �+ 0! N C aJ •r t0 a 7 • L L 01 C r 0 • � • f•- G- • 41 O u E CE . L r O u1 C» t N �o C r r O 4. # O O C r L {s L �C •. - r- a1 •+ 4. 4• d eo •p •v 10 tp t L S u � + V' C � N # 4.. a1 N {, N a E r- C }r r st' N t0 01 to d r O O N C L 01 A Cf N N OJ t 4J r- r V O Et N Or :3 41 Ca 4j 4j 3: 4-A N 4J aJ a 7 a r O -01 C N -r, to PJ cf too r d to r- +7 a +j Let= .O 01 'O•C.0 O . - V - S.- V-- tt u 01 u 4. N F CM C 4J • -2 {J {•s r N d Q i•� /-+ CL L CL Cl .•-• N - z 6 -Hour Precipitation (inches) - o V1 o un o to o un o In o N l0 V:t4 �d•!"f t•! N r ILO : M t/1 v .t . a• , 1 • 1 cn Z � i•+ f• C i I" 1� T t� 1---�� � � -- f �j' I I :� -: ' 1� 1 i 1 O r C:, r_I :�,` .' --i--L - - — - 1.� - j .1 � r Ilcll 'li .11 1) ( 1 1 � • I f l l 1 1 I' I 1 X111. 'i•) II ( 1 �( ( 0 (-moq jSayoui) Kjjsua:tuj APPENDIX XI IV - - 14 raft•' •�.. 1:. * :� .? . �. •.�. .��!; �r �C!':� . it %�. C�T'�ir►� i sa y. URB - Da A W ACf- i 7ZWEOFCONCx�MON r � � c • i� a• a• ar if M � .'� Boo I OL ...• _. u Goo 80 3M- 400 •mot = •,'� , � If � �t� ." 'V -� =L G > h° S zoo _ 1 _ •- JI 0 ZO f ti- '�a1C++f ti ILT • C I F i 0 M :• ' Flewe 3-t0 Ovwfana Wna d flaw praok ''• :' ' � -.�•� • tI!}�� f. , • = L..• �:.. , ��!w"���''s •.'j .�. � d_�•• �t ...ij� •. -/ tili+'� �:a'��",tia .•�. 1 �r.•y�� ./►•�.`� �r�, �. • I • �+w.i� ��. id�t..r..��. rryA' • 1r��y�� + � •�►'�I�"1• . O f J ,� ; 1 z 0 I t oo CM IL O U / _•, j N _ / cv7 C, co �, .fi v F , r � C _ bs/ �' %• M v p j ►n cwl r s C IO) V � — • ts.Lw • �� C � ' '/ .V I v 1 • C \ Q 1 ��" ' of a.. :.: ^ ; • J2 _ 3. L Li Lr- Q o c cm I. n �.r- ! ' z N N LU 1 VMNR ._ OM W J _ Cm z C17 5 O V Y Z V ° o ., M' t6`�,o . A. - = w i W Z O !n tI1 L O O C u 4K C 4 0 � ^ a s o t o >+ O�O us you Su :<s I OCG OA � O w r O W J 1 i 0 uGIL • t L .• r TI-A-7 f • � • — f ••� / � .V f � `1 � 1 io �O do cm all 1 cm ff dL— N . 'fir p ✓� / 1 -� • � • , - { . . LLJ CM AN CN cm r `w` ` ^ i e - 1 •< o o • !' C� � —. O � � � / 1 , �; }' �' °.— e� � - •-�- - s ir, -�/ � -�- � I ��� `. C I O N L'.. '✓ ``' I �� s 1 0 i • 3 V (� ; < Z t <t �' • O u 3 I z U Yo -.j an LU a � < I G H U V an J r' c °. eh Co W O cc 93 �0.0 M, ♦ r s r Q SOIL & TESTING, INC. Z p P H O N E P.O. Box 600627 (619) 280 -4321 San Diego, CA 92160 -0627 Q _ T O L L F R E E z (877) 215 -4321 6280 Riverdale Street F A x San Diego, CA 92120 (619) 280 -4717 www.scst.com N March 22, 2000 Jamie Lutz & Dave Gonyer SCS &T 0011050 -1 2920 Sombrosa Street Carlsbad, California 92009 SUBJECT: Update Report, Proposed Lutz/Gonyer Residence, 1715 Haydn Drive, Carlsbad, California. REFERENCE: "Report of Geotechnical Investigation, Proposed Residential Project'; Southern California Soil and Testing, Inc.; June 11, 1990 (SCS &T 9021069, Report Number 1). Ladies /Gentlemen: In accordance with your request, we have prepared this update letter for the subject project. The scope of our work included a site reconnaissance, and a review of the referenced report. It is our opinion that the recommendations provided in the referenced report are still applicable to the subject project, and should be implemented. However, the following comments and changes are provided based on current standards. 1) Firm natural ground is defined as soil having a minimum in -place density of 90 percent. 2) All cut slopes should be observed by a representative of this office during grading to ascertain that no adverse conditions requiring revised recommendations are encountered. 3) The drainage around the proposed building should be designed to collect and direct surface water away from proposed structure and toward approved draining Proposed Lutz/Gony„r Residence March 22, 2000 Jamie Lutz & Dave Gonyer SCS &T 0011050 -1 facilities. Rain gutters that discharge runoff away from the building are recommended on the structure. The ground around the proposed structure should be graded so that surface water flows rapidly away from the structure, and the top of slopes without' ponding. In general, we recommend that the ground adjacent to structures slope away at a gradient of at least two percent. Densely, vegetated areas where runoff can be impaired should have a minimum gradient of at least five percent, within the first five feet from the structure. The client should be advised that drainage patterns approved at the time of grading should be maintained throughout the life of the proposed structures. They should also be advised to limit site irrigation to the minimum necessary to sustain landscape growth. Should excessive irrigation, impaired drainage, or unusually high rainfall occur, saturated zones of perched groundwater conditions may occur. 4) All fills should be compacted to at least 90- percent as determined in accordance with ASTM D 1557 -91, Method A or C. 5) Minimum footing depth recommended is 24 inches below lowest adjacent finish grade. 6) Minimum concrete slab reinforcement should consist of No. 3 bars placed at 18 inches on center each way.. 7) Ten -mil visqueen should be used under slabs -on- grade. The visqueen should be placed on a four inch sand blanket. Two inches of sand should be placed over the visqueen_ 8) See attached Plate Number 1 for typical retaining wall subdrain. 2 ,� Proposed Lutz/Gonyer Residence March 22, 2000 Jamie Lutz & Dave Gonyer SCS &T 0011050 -1 9) As per Chapter 16, Division V of the 1997 UBC for active near - source fault zones, the following is presented for the subject site. 1) Seismic Zone 4: Z = 0.40. 2) Source Fault: Rose Canyon Fault Zone 3) Seismic Source Type: B 4) Soil Profile Type: S 5) Distance to Seismic Source: 3.5 kilometers 6) Near - Source Factor: N = 1.2 7) Near - Source Factor: N„ = 1.4 8) Seismic Coefficient: C = 0.44 N 9) Seismic Coefficient: C„ = 0.64 N, If you should have any questions regarding this report, please do not hesitate to contact this office. This opportunity to be of professional service is sincerely appreciated. Respectfully submitted, SOUTH RN CALIFOR STING, INC. CM EW Daniel B. A ler, R.C. r 37 crvil, OF C AOE�� DBA:sd cc: (6) Submitted 3 t M ��F � p WATERPROOF BACK OF WALL —, FOLLOWING ARCHITECTS SPECIFICATIONS CRUSHED ROCK BACKFILL 3/4" HEIGHT OF WALL 3/4" CRUSHED ROCK OR c MIRADRAIN 6000 OR EQUIVALENT GEOFABRIC BETWEEN ROCK AND SOIL 12" MINIMUM -+-- O SUBDRAIN 12" BELOW ° ° SLAB ON GRADE SLAB -ON -GRADE 4" DIAMETER PERFORATED PIPE SDR35 OR EQUIVALENT TYPICAL RETAINING WALL SUBDRAIN DETAIL NO SCALE SOUTHERN CALIFORNIA PROPOSED LUTZ/GONYER RESIDENCE SOIL & TESTING, INC. BY: DBA/SD DATE: 3/22/00 JOB NUMBER: 0011050 - IPLATE NO.: 1 NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText NoText