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1989-4603 H/U/TM Street Address ~L0_~- - Category / / ft; 2-0 Serial # 1m 1~()3' / Description Name Plan cl<. # Year / .. " COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS INTRADEPARTMEI'ITAL CORRESPONDENCE Granville 1'1. Bowman. Director Department of Public Works Date ... .Mil-ri:.h .10.,. .19B.7. . . . TO: Gary Cane FROM: Joe Goldhammer JlC1 SUBJECT: Engineering Geology Report - TM 4603-1; County Tract Encinitas We have made an onsite inspection and a review of current geologic literature to determine if potential geologic hazards exist at this site. Our investigation indicates that no unique potential geologic hazards should be encountered by this project. An engineering geology report by the developer's geologist will not be required. According to the following references, no faults pass through the project site: a. Fault and Epicenter Map, County of San Oiego Planning Department, August 1974. b. Faults and Special Study Zones Map, Quad 7, County of San Diego Integrated Planning Office, 1975. c. State of California, Preliminary Fault and Geologic Map, South Half, ed. C. W. Jennings, California Division of Mines and Geology, 1974. It should be noted that all of Southern California is subject to potential damage due to ground shaking. The nearest probable source for a major earth- quake affecting this area is the Elsinore Fault, approximately 27 miles to the northeast (McEuen and Pinckney, 1973; Greensfe1der, 1973). JCG:ch Attachment cc: Materials Lab (2 copies) OPW Form 31213-86\ ,);' '!",' e" , A fXDII /(;;,,/;4 L. CrlLC::', Fc..-K , I i :! I I j A 1 ,I ;j ;:l. ';~'l "'~.'....' .. ~ ~." 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'" "'" '" . ..... ..... , "', '. --.:. , \ , ., " -""", .~-ie.:\~~'''''~~' oJ < u ~ L . '~evisi!d '1/85 . ___=- :-APPi~DIXn~I-~ ;) '-..... - :-'; ~~-:'~(~;~J;"":\~-:~'-f"-;.:::~...._ ~ ..... ---~ .....;._?-.. .~~ _Jo.:.~,:~_ _.__~_.. ...:;..i. -,- ~- ---.. . . . I. ( ,. " ....--j . I ~. ,- . . . ~ ". . , ( , I , I , . ) , I j , I ~, 1 , J .r ( ,.... . . \D - ..:'/___\) " -., c::: c_ <;::) :::J - 0 '" ~ -- - c::: , [- CD - ~ e .~ < - I.I.J U 0 >- ""' :.~ , ~ 0 c:; c.. - h~ ~ ~ c;,~ -~ -- I c.':J -- ........ c:- ....... W-l >- I ~ ~.. ..' .-- "" o - I- 0<: <:It:: w - -":: Q" Vl Zu..-1 0<(00 Vl "" lL,!::t: o~o >-~u 1::0:0 _<(0 :::><>'0 C) u.J -I Uc"- L1.. C . "" c.r. -l ~ - :::- -- - r C- O c.n '^ - =- C"I ---- c:> C'J '\ = c-.. \.. ~ u ;;- . . ~ o ""' . ~ z; o < - ~ ~ :. . ~ w ~ ' U ;a; C ... u. :: 3 .A C ::-- ~ ~ ~ ~ ! ,~ ~ = c: ~ < '"" l-- 00 0:::: Z 1;.1 < U 0: ~ ~ UJ z "" o ~ 0 . u =" VI 0 U ::) ~ ~ z. 0" ;:~ < !:! zg .. . - o ""' ~ .:. I /=: <'?I ~ I, - aJ o z < ~ :; . , .' --... - 1.1'I .:r - C) ..... - 1.1'I .:r 1.1'I . ..... ..... " ',j .J < u .. ~.. . Revised 1/85 ~PENDIX XI-E I I I I I I I I I I I I I I I I I I I REPORT OF FIELD OBSERVATIONS AND RELATIVE COMPACTION TESTS ADDITIONAL WORK LOTS 1 AND 2, MONACO SUBDIVISION AVENIDA DE MONACO ENCINITAS, CALIFORNIA PREPARED FOR: C.D.I. 92~ West San Marcos Boulevard, Suite 5 San Marcos, California 92~69 PREPARED BY: Southern California Soil & Testing, Inc. 628~ Riverdale Street San Diego, California 9212~ Post Office Box 6~0627, Zip Code 92160 I I I I I I I I I I I I I I I I I I I SOUTHERN CALIFORNIA SOIL AND TESTING, INC. June 13, 1991 C.D.I. 920 West San Marcos Boulevard, Suite 5 San Marcos, California 92069 SCS&T 9121029 Report No.3 SOBJECT: Report of Field Observations and Relative Compaction Tests, Additional Earthwork, Lots 1 and 2, Monaco Subdivision, Avenida De Monaco, Encinitas, California. REFERENCE: 1) "Update Letter, Lot 1 and 2, Monaco, TM 4008- 1", by Southern California Soil & Testing, Inc., dated March 21, 1991. 2) "Report of Field Observations and Relative Compaction Tests, Monaco Subdivision", Southern California Soil & Testing, Inc., April 8, 1988. by dated Gentlemen: In accordance with your request, this report has been prepared to present a summary of our field observations and the results of relative compaction tests performed during the additional earthwork on lots 1 and 2 at the subject site. These services were performed between May 30 and June 12, 1991. 6280 RIVERDALE STREET. SAN DIEGO, CA 92120 . 619-280-4321, FAX 619-280-4717. P.O. BOX 600627, SAN DIEGO, CA 92160 747 ENTERPRISE STREET. ESCONDJDO, CA 92029.619-746-4544, FAX 619-746-6579 I I I I I I I I I I I I I I I I I I I SCS&T 9121029 June 13, 1991 Page 2 SITE DESCRIPTION The Monaco subdivision is an 11 lot subdivision located off of Rubenstein Avenue in the Cardiff-by-the-Sea area of San Diego County, California. The lots which are the subject of this report are lots 1 and 2 of the subdivision. The lots had received previous grading in 1988 as reported in the referenced Report of Field Observations and Relative Compaction Tests. No significant vegetation had grown in the areas to be graded since the previous grading operations. SCOPE OF GRADING The subject grading operations were undertaken in order to lower the finished grade elevations of the subject building pads by approximately two and one half feet. As a result, the cut portions of the building pads required further undercutting in order to achieve the minimum recommended undercut of three feet below finished grade elevation. PROPOSED CONSTRUCTION It is our understanding that single family one and/or two-story residences of wood-frame construction are planned for the subject building pads. Shallow foundations and conventional concrete slab-on-grade floors are anticipated. AVAILABLE PLANS To assist in determining the locations and elevations of our field density tests and to define the general extent of the site grading for this phase of work, we were provided with an undated grading plan prepared by Conway & Associates, of Cardiff, CA. I I I I I I I I I I I I I I I I I I I SCS&T 9121029 June 13, 1991 Page 3 SITE PREPARATION The subject grading operations, began with the removal of the existing soils on lots 1 and 2 to the new finished grade elevations. The soils generated by these operations were exported from the jobsite. The cut portions of the building pads were then undercut to a depth of approximately three feet below the new finished grade elevation. On lot 1, this necessitated undercuts on both the upper and lower portions of the split-level pad. The approximate horizontal limits of the undercuts are shown on plate No.1 of this report. These limits extended to a minimum of five feet beyond the limits of the proposed structures as determined by grade control stakes prov ided on site. The soils generated by the undercutting operations were stockpiled for later use or placed as uniformly compacted fill in previously prepared areas. The soils exposed in areas to receive fill were scarified to a depth of approximately twelve inches, moisture conditioned, and compacted prior to the placement of fill. The soils obtained by the undercut operations were then replaced in approximate six to eight inch lifts, moisture conditioned to near optimum moisture content, and compacted to a minimum of 9fil% relative compaction by means of heavy construction equipment. During the site grading operations, the over-steep slope on the west side of lot 2 was cut back to a 2:1 horizontal to vertical slope ratio. FIELD OBSERVATION AND TESTING Observations and field density tests were performed by a representative of Southern California Soil & Testing, Inc. during the site grading operations. The density tests were taken according to ASTM D 1556-82 and the results of those tests are shown on the attached Plate No.2. The accuracy of the in-place I I I I I I I SCS&T 9121029 June 13, 1991 Page 4 density test locations and elevations is a function of the accuracy of the survey control provided by other than Southern California Soil & Testing, Inc. representatives. Unless otherwise noted, test locations and elevations were determined by pacing and hand level methods and should be considered accurate only to the degree implied by the method used. I I I I I I I I I I I I As used herein, the term "observation" implies only that we observed the progress of work we agreed to be involved with, and performed tests, on which, together, we based our opinion as to whether the work essentially complies with the job requirements, local grading ordinances and the Uniform Building Code. LABORATORY TESTS Maximum dry density determinations were performed on representative samples of the soils used in the compacted fills according to ASTM D 1557-78, Method A. This method specifies that a four inch diameter cylindrical mold of 1/30 cubic foot volume be used and that soil tested be placed in five equal layers with each layer compacted by twenty-five blows of a 10- pound hammer with an 18-inch drop. The results of these tests, as presented on Plate No.2, were used in conjunction with the field density tests to determine the degree of relative compaction of the compacted fill. CONCLUSIONS Based on our field observations and the density test results, it is the opinion of Southern California Soil & Testing, Inc. that the additional grading operations on lots 1 and 2 at the subject site were performed basically in accordance with the recommendations contained in the referenced Update Letter, and I I I I I I I I I I I I I I I I I I I SCS&T 912Ul29 June 13, 1991 Page 5 the recommendations contained therein remain applicable to the subject site. LIMITATIONS This report covers only the services performed between May 30 and June 12, 1991. As limited by the scope of the services which we agreed to perform, our opinions presented herein are based on our observations and the relative compaction test results. Our services were performed in accordance with the currently accepted standard of pract ice and in such a manner as to prov ide a reasonable measure of the compliance of the grading operations with the job requirements. No warranty, express or implied, is given or in tended wi th respect to the serv ices whi ch we have performed, and neither the performance of those services nor the submittal of this report should be construed as relieving the grading contractor of his responsibility to conform with the job requirements. If you should have any questions after reviewing this report, please do not hesitate to contact this office. This opportunity to be of professional service is sincerely appreciated. Respectfully submitted, SOUTHERN CALIFORNIA SOIL & TESTING, INC. l)..j- W- Dou as iCks, SCS Project Supervisor Adl DBA/DH/MH/rr cc: (6) Submitted #36037 (1) SCS&T, Escondido 0 ~ ~ z 0 ... ~ 0 .J W 0 g - z w W z ~ :J ~ z ... is w :) 0 CJ :J ~ !;i a:: ~ 9 w 0 1Il I CJ 0 , 9 z u.. ~ :) 0 :) Iii u.. z CJ 0 0 ..l W 1Il !;i c( ~ ~ CJ i= w >- i CJ ~ ~ :J 0 a:: 0 in ..l W ..l Z W W > 1Il W !C !C >- .. ----l 0 a:: N :I :I c( w S ~ a:: ..l ~ 0 c( I . I ..l a:: ~ CJ l/1 ~ ~ ~ :I ~ , ~ ~ w >- Q z c( c( ~ ~ I - I ~Io 10 " z I t " tj " I!) CD W " CD lL l/1 10. l/1 .. ~ . " I .. I \ I ~ " \ W ., .J " " I -- J I I ~ - . zo lI:Z .. iii 0 .. ... III 0 0- lJl ... W ~~ M IL . , II :Jc ... !C , , ~l: III ..l :IllS .. ~ .In <i~ ot;; I!). lll~~~ LL:::: Zw ~ .. ~ =~ 0 It.. !@lS!j!iE '" well , <ll!OI~ :1:... , ...~ ;t~= ..- ~9 z 0 !( "' :)2 ~ .. lJl ~<Il 0> . ~ (II Itl ffi!; Zlll~ ..l i 0 ...ffi r- ~IilB~", c( ~ ... ~i= >u - (II I iilU 0 0 ... ..- W lJl 0'" N <Q) ... Ill!; I -. hdl ii , I, "'Iii , Q =- ,.:, I i~ If -.r. Ii <~ I ~~ ~~ Ii I!)q~ lL 0\ III i; 10 III .. .. <~ . u9 M I i=<Il ffi!; , >u I J I ---.- ----- N ... o .J - - - - - - - - - - - - -----.......,.....-- I I I I I I I I I I I I I I I I I I I JOB NAME: Monaco Lots 1 & 2 JOB NO: 9121029 PLATE NO: 2 TEST NO. DATE LOCATION ELEVATION MOISTURE DRY DEN. SOIL REL.COMP. (percent) (p.c.f.) TYPE (percent) -----------------------------------------------------------------,------------ 1 6-7-91 Lot No. 1 176.0 11. 7 119.2 2 95.2 2 6-7-91 Lot NO. 1 177.5 FG 8.7 121.3 2 96.9 3 6-11-91 Lot No. 1 167.5 9.1 123.6 1 93.9 4 6-11-91 Lot NO. 1 169.0 FG 7.5 120.9 2 96.6 5 6-12-91 Lot No. 2 156.5 9.9 115.2 2 92 .0 6 6-12-91 Lot No. 2 158.5 FG 8.8 113.8 2 90.9 FG - Finished Grade MAXIMUM DENSITY AND OPTIMUM MOISTURE DETERMINATIONS, ASTM 1557-82 ----------------------------------------------------------------- SOIL METHOD DESCRIPTION OPTIMUM MAXIMUM TYPE MOISTURE DENSITY (percent) (pcf) 1 A Dark Brown, Slightly 8.0 131.6 Silty Sand 2 A Brown, Sil ty Sand 12.1 125.2 . JONES ENGINEERS, INCORPORATED . CONSULTING ENGINEERS . . . . . . . . 3255 Wing Street, #107 San Diego, California 92110 -4" REVISED DRAINAGE STUDY FOR THE MONACO SUBDIVISION HAP NO. 12049 LOT ONE Prepared by: JONES ENGINEERS, INC. 3255 Wing street #107 San Diego, CA 92110 Revised April 8, 1993 Prepared for: The City of Encinitas Department of Public Works / / I I , j ~;'~Si'-""; ~\'-...\:;t(.\J !u'j~:.t{~ ";0 " f';~ f::j . ~ P. ./0" ~, A'./ ,(:::: ~'{$-' \<, '; ~ I~ ~ ~ ~\ 'c.:J r'i\, l;:t ~o. C 23,545 ;>.?i' II ,\. . 'y' ~ '.,' "', i \..,.. \ aMfire". i '\ tf',&,. J;loc,iki~4~"'::; \.. ., (:' 0- nC- 'II' " ....', <;. J.., . . ' ~_v, '...._ . ~:--- . (619) 223-5388 FAX (619) 223-5389 CIVIL ENGINEERING I LAND SURVEYING . HYDROLOGY EVALUATION FOR THE MONACO SUBDIVISION LOT ONE OF MAP NO. 12049 . BACKGROUND: . This report presents a hydrology comparison between the existing and proposed conditions of lot 1 of the Monaco Subdivision (Map No. 12049) to determine the impact the proposed development may have on the downstream properties. The study area is a portion of an eleven lot single-family residential subdivision. Presently, ten residences have been constructed. The study area is the remaining lot of this. subdivision which is presently under construction. . SUMMARY: . The site is located within a local hydrologic basin known as the "Summit Sump". The southerly sub-basin of the "Summit Sump" is comprised of 38.0 acres and the subject site makes up an area of .35 acres within the southerly sub-basin. RATES . Based on an analysis of a 100 year storm event the southerly sub- basin generates a peak rate flow of 74 cubic feet per second (c.f.s.) and the subject site under existing conditions generates a peak rate of flow of 0.52 c.f.s., which represents 0.70% of the total. Under developed conditions the peak runoff from the site is calculated to be 0.63 c.f.s.. The incremental increase of peak runoff due to development of the subject site is .11 c.f.s., which represents one sixth of one percent of the total runoff for the southerly sub-basin. . VOLUMES . During a 100 year storm event, the total volume of runoff from the southerly sub-basin is 8.3 acre feet. Based on the dimensionless hydrogragh under buildout conditions the incremental increase in volume of runoff from the subject site is 1,818 cubic feet which equals 0.04 acre feet. This incremental increase in runoff volume represents one half of one percent of the total runoff for the southerly sub-basin. . STORAGE The developer proposes to retain 75% of the total incremental increase of storm water runoff during a 100 year twenty-four hour storm, (1,370 cubic feet). . An analysis of the roof area of the proposed home indicates a total area of 2,673 square feet. Assuming a 100 year storm yields 4 . JONES 2 . . inches ~f rainfall, the total volume of runoff collected by the roof is 891 cubic feet which represents 49% of the incremental increase in runoff which would occur under buildout. An additional 479 cubic feet of runoff from the patio, driveway and parking areas will be collected by placing inlets at collection points on the yard area, the driveway and parking area routing the runoff into the retention system. . A system of perforated pipe in trenches with gravel bed is proposed to store the storm water collected from the roof and driveway. Enclosed is a lot layout illustrating the area for a trench system to be installed. A detail of the trench is also included. The remainder of the incremental increase in runoff, attributable to construction of the. home is equal to 1/8 of 1% of the overall volume of runoff generated by the southerly sub-basin. This relative increase should be considered negligible. . CRITERIA: . The design standards, basic criteria and procedures will be based upon the San Diego Flood Control District Hydrology Design and Procedure manual. The existing and proposed conditions will be evaluated for the worst-case scenario (100 year storm) to analyze the most severe impact the development will have on downstream properties. COMPUTATIONS: (100 YEAR STORM, 24 HOUR DURATION) . RUNOFF FOR NATURAL CONDITIONS Q = CIA C = 0.45 (Appendix "A"IX . "D" SOIL GROUP A = 0.35 ACRES . P6 = 2.5 in./100 yr. (Appendix "A" XI-E) P24 = 4.0 in./100 yr. (Appendix "A" XI-H) tc = 15.0 min. (Appendix "A" X-A) I = 3.3 in./hr. (Appendix "A" XI-A) . Q(NAT.) = (0.45) (3.3 in./hr.) (0.35 ac.) Q(NAT.) = 0.52 c.f.s. . . JONES 3 . RUNOFF FOR DEVELOPED CONDITION Q = CIA . C = 0.55 (Appendix "A" XI-A) "D" SOIL GROUP A = 0.35 ac. . tc = 15 min. (Appendix "A" X-C) i = 3.3/hr. (Appendix "A" XI-A . Q(DEV) = (0.55) (3.3) (0.35 ac.) Q(DEV) = 0.63 c.f.s. INCREASE IN RUNOFF RATE BY PROPOSED DEVELOPMENT . Q(DEV) - Q(NAT) = INCREASE RUNOFF BY DEVELOPMENT (0.63) - (0.52) = 0.11 c.f.s. For 100 year storm SOUTH SUB-BASIN . PEAK FLOW. = Q100 = 74 c.f.s.. INCREASE IN PEAK FLOW BY SITE DEVELOPMENT = Q100 = 0.11 c.f.s. . = 0.15% OF TOTAL SUB-BASIN PEAK FLOW OR 1/6 OF 1% . . . · Per Hydrology study for proposed 11 Lot Subdivision TM 4603, 7/31/86 by Conway & Associates (with no ground infiltration.) . JONES 4 . VOLUME OF SOUTHERLY SUB-BASIN V = 8.3 ac-ft * . VOLUME INCREASE OF SITE BY DEVELOPMENT V = (1,818 c.f.) (1 aC./4,3560 s.f.) V = 0.04 ac-ft . = .5% OF TOTAL SUB-BASIN VOLUME . . . . . . . * Per ASL Consulting Engineers Master Drainage Plan City of Encinitas July, 1989. . 5 JONES . . . . . . . . . . TRrANGULAR DrMENSrONLESS HYDROGRAPH ...., "' I+; <J '--' ~ 1?E.AA FLDW 'JOI-UME: I~E' OF t7'"V~O CONDITION . -VS. ~XI=mNt:! ~N171TIOI\l ~15117I--lCl ~O~l?ll1CN . ~.tmV~LDFW COlJl7lTlD/J I.L 1L Cl :z :::l D::: : : Tp Tb TIME (hrs.) Tp = Time to Peak, (hrs.) D = Duration, (6 hrs.) L = Lag Time, 0.6 (Tc); (hrs.) EMPIRICAL EOUATIONS FOR HYDROGRAGH CONSTRUCTION Tp = D/2 + L Tb = 2.67 (Tp) RUNOFF FLOWS Q 100 (DEV) = 0.63 Q 100 (NAT) = 0.52 c.f.s. TIME TO PEAK Tc = 15 min. (0.25 hr.) Tc = 15 min. (0.25 hr.) Tp (DEV) = 6/2 + 0.6(0.25) = 3.15 hr. Tp (NAT) = 6/2 + 0.6(0.25) = 3.15 hr. TIME BASE Tb (DEV) = 2.67 (3.15) = 8.4 hr. Tb (NAT) = 2.67 (3.15) = 8.4 hr. . JONES 6 . . . ~ 7.'" - -\.l C-l- - 11). o - -:~ II \\ . 0,..... :z " :::J ~ .~ 3;: ~\O ~Q . ~~ :>1 \U ~ ~~ III ~ ~ ..:: <;J <:. z~ -~. . ,. . . . . . 4 'U <<'\ -.3 . II . _!l( ";i~ w~ OtO "-' o " .!l~ o o ~ \t\ , U) . :i~! ~~~ h..!l..- n; Ul d) \I)}-- ~ in II . ~ {, ~'If1 / ' Y , , i .: 111/ / -n 2 o E ~ :z ~ / I' /: i. ~ ! ' ~ ~ ~ ~ i i~ /e I ~Ul 8~ -1\lo1 ~lll ~Il' Z , , c \t\ c::S l....<;j::>} .;:t.,::i<...)\"lCl'(:f 7 . ~ .ii ~ ~I ih~ ~ rf" .~I:: , .. . '::t:l t:- .~ \.t\ ......; w ~ .2 I- ~ .,... o o . METHOD OF ELIMINATING INCREASED RUNOFF: . The increase in runoff is due mainly to the building and driveway. Collecting and storing the rainfall from the roof of the building will significantly reduce potential increases in runoff. This can be accomplished with roof drains connected to perforated pipe/french drains that will allow the runoff to seep into the ground in the lower yard area. The driveway area also contributes to the increase in runoff. The developer proposes to collect and store a portion of these areas where feasible. To minimize the increase in runoff from this project the proposed retention system will collect and store all of the roof area and a portion of the driveway area so that a minimum of 75% of the incremental increase of runoff will be stored on site. . . RUNOFF STORAGE Volume of Incremental Increase in Runoff V = 1,818 c.f. = 0.04 ac-ft . 75% x 1,818 c.f. = 1,370 c.f. = 0.03 ac-ft Total Reauired Storaae Volume Lot 1 Storage Volume = 1,370 c.f. . Lot 1 Storaae 1370 c.f. Roof Area = 2,750 s.f. x 0.33 ft. of precipitation = 891 c.f. = 0.02 ac-ft Remaining Volume to be stored = 462 c.f. = 0.01 ac-ft . 462 c.f. 0.33 ft. = 1400 s.f. of driveway area to be collected, (See Drainage Plan.) . STORAGE CALCULATIONS FOR PERFORATED PIPE I FRENCH DRAIN: VOLUME OF PIPE PER LINEAR FOOT: A =.('rr2 A = (3.14) (0.25) 6" P.V.C. R= 0.25 ft. . A = 0.19 c.f. AT 1/2 Full = A = 0.10 c.f. . . JONES 8 . VOLUME OF VOIDS . = Ve (He) e = void ratio e 0.5 (pea gravel) . VOLUME OF VOID PER CUBIC FOOT: = (1 c.f.) (0.5) 1 + 0.5 . = 0.33 c.f./c.f. VOLUME OF TRENCH: H = 4.0 (See typical detail.) h = 2.5' = storage area . w = 4' V=HWL . V = hw V = (2.5 s.f.) (4 s.f.) V = 10 c.f. . TOTAL VOLUME OF TRENCH & DRAIN PIPE PER LINEAR FOOT: . VOLUME = (VOLUME OF.TRENCH) (VOLUME OF VOID) + VOLUME OF PIPE V = (10 c.f.) (0.33 c.f. Ic.f.) + 0.10 c.f. V = 3.40 c.f. I l.f. LOT 1: . REQUIRED STORAGE = 1,370 c.f. LENGTH OF STORAGE TRENCH REQUIRED: . L = 1370 C.F. 3.40 c.f. I lof. L = 403 lof. . JONES 9 . . MONACO SUBDIVISION I LOT HYDROLOGY STUDY COST ESTIMATE FOR STORAGE I DISSIPATION TRENCH . 1. 6" P.V.C. PERFORATED DRAIN PIPE @ $15.00/l.f. LOT 1 = 371 L.F. @ $15.00/I.f. = 6,045.00 . 2. GRAVEL TRENCH @ $0.50 s.f. with filter fabric (4' x 4' TRENCH TYPICAL) = 16 s.f./l.f. = $8.00/I.f. LOT 1 = 371 l.f. @ $8.00/ l.f. = 3,224.00 . LOT 1 TOTAL $ 9,269.00 . . . . . . JONES 10 . . , . FINISH GiIWUND . O:i ~~ "(,'lpFVC. ~1a:> F'l~ (:It. 0 6 dO 'a Jb If o. [) Q " . o q 6 FICI8( 10 . FAel<IC - Cl f ~ II ::r If) ~ ~ GRA"EL ., J: ~ Q o iP o . o o (: I W=40 i . ( l.) 11)F OF" 11<El\\CH WILL e,c: A MINIMuM OF Z FtE::T eeuw -me; FLbi1~, (t,)T\l~ ~~ OF1li€. IKENC.H WILL E7!E: A MINIMUM OF 5 FEET AWAY ~M I3UlLDINClJ WALLS I PROPl;"f\1'-{ ecuNOARY) AND TOP Cf'SLOPE:. (E5.} DRAIN PII'E. WIlL. ~ illiHT' LINED TO A MINIMUM OF lOfEET ~ me: E5UILDINc" (4:) ALL c.cN.S1RUCl1OJ AND MATE.:R\ALS SHALL Be: ~ SAN lAet=.o CCtlNTY ~ICNAL ST.bNDAroS. . . TYPICAL STOKAQf/t/I~JPA11t-J~ 1RENCH. N.T-S. . . JONES 11 . . , , . APPENDIX "A" . . . . . . . . JONES . .' RUNOFF COEFFICIENTS (RATIONAL METHOD) . LAND USE Coefficient, C Soil Group (1) . , A B C 0 Undeveloped .30 .35 .40 @ Residential: Rura 1 .30 .35 .40 .45 Single Family .40 .45 .50 @ Multi-Units .45 .50 .60 .70 Mobile Homes (2) .45 .50 .55 .65 Commercial (2) .70 .75 .80 .85 80% Impervious Industrial (2) .80 .85 .90 .95 90% Impervious . . . NOTES: . (1) Obtain soil group from maps on file with the Department of Sanitat:on and Flood Control. . (2) i0'e~e actual conditions deviate significantly from the tabulated imperviousness values of 80% or 90%, the values given for coefficie~: C, may be revised by multiplying 80% or 90% by the ratio of ac:ual imperviousness to the tabulated imperviousness. However, in n0 ,'be shJlI :~e final coefficient be less than 0.50. For example; Cons.J0r commercial property on 0 soil group. Actual imperviousness = 50% . Tabulated imperviousness = 80% Revised C = 50 X 0.85 ; 0.53 80 . . JONES . H F~~.I ( S"&UUJ 4,Md . 3ddO 2 ddd . . , Iddd -, 900 SOO 700 ,{;QO 3tJO . 20tJ ( . Idd . ';0 10 EGtI/?T/ON 7i:. el1L J-) .385 1C. 7lm~ a/ ~onc=.lnzr/<"7 L. L~n9lh or wa.I~rsh~d If. Ol/kr~n~~ in ~/""va"'/;"/7 alen!? ~/I"~c"/y~ sloD~ lin~ (S",.. '-?ppendlx y.B) ;; L C Mi/~s .r~~r NOGI.....s M';hU/~s " 24tJ 10 as 30 NOTE FOR';ATURAL~TERStED~ 20 a ADD TEN MINUTES TO COMPUTED TIME OF coj CENTRATIDN. ~ "- "- S" I)d "- 400 ~ ,,~ "-~<" "- "- "- "- "- "- "- 1 . 10 . 5 \. H SArJ 01 EGO COUNTY DEPARTMENT OF SPECIAL DISTRICT SERVICES DE SIGN MANUAL APPROVED ,;J, I/. r---~ -<I~ . . .3 leo 2 12tJ 5 II)/J 90 8t) 70 60 4- .3 1 ,," 2 .II) 30 .... StJtJtJ '4~tJ EO "- 18 JtJtlO "- 1& "- 1<1 "- 2000 "- Ii' 1800 "- 1600 10 1"00 9 12"" 8 1000 7 900 800 Ii 700 600 S SOO ~ "00 300 J 200 L i'C NOMOGRAPH FOR DETERMINATfON OF TIME OF CONCENTRATION (Te) FOR NATURAL WATERSHEDS DATE /2.///69 APPENDIX X-A V-A-I0 Rev, 5/El . ("'\1 \ . 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'" ! 0 ~ 0 C i: .... ~ .. ..... :J I- 0" -.:: '" 0 ..... M ~-...... C . ,........, 0 '" .~ -'- QJ L; N '.. +' ;. " , :J .'1' c::: , , ." .~ '110 ',' ,.' , ~ ::E '.' .,"!I;. 1"1 " ;. II I I. ....": : ~ I I I . I' ;=1";1 I I II .. .. .. d .. 01 .: ... 0 ~-~ ... ~ "I ~ '"1. ."t ~ , ,......... 1.-,...",..,,,,, r.... t'-,............ ~p.vj s"ed 1/85 ^DDt=~mTY VT ., ~REPORT OF ~~ FIELD OBSERVATIONS AND RELATIVE COMPACTION TESTS ADDITIONAL WORK LOTS 1 AND 2, MONACO SUBDIVISION AVENIDA DE MONACO ENCINITAS, CALIFORNIA PREPARED FOR: C.D.I. 920 West San Marcos Boulevard, Suite 5 San Marcos, California 92069 PREPARED BY: Southern California Soil & Testing, Inc. 6280 Riverdale Street San Diego, California 92120 Post Office Box 600627, Zip Code 92160 SOUTHERN CALIFORNIA SOIL AND TESTING, INC. June 13, 1991 C.D.1. 920 West San Marcos Boulevard, Suite 5 San Marcos, California 92069 SCS&T 9121029 Report No.3 SUBJECT: Report of Field Observations and Relative Compaction Tests, Additional Earthwork, Lots 1 and 2, Monaco Subdivision, Avenida De Monaco, Encinitas, California. REFERENCE: l} "Update Letter, Lot 1 and 2, Monaco, TM 4008- 1", by Southern California Soil & Testing, Inc., dated March 21, 1991. 2) "Report of Field Observations and Relative Compaction Tests, Monaco Subdivision", by Southern California Soil & Testing, Inc., dated April 8, 1988. Gentlemen: In accordance with your request, this report has been prepared to present a summary of our field observations and the results of relative compaction tests performed during the additional earthwork on lots 1 and 2 at the subject site. These services were performed between May 30 and June 12, 1991. 6280 RIVER DALE STREET. SAN DIEGO, CA 92120.619-280,4321. FAX 619-280-4717. PO. BOX 600627, SAN DIEGO. CA 92160 747 ENTERPRISE STREET. ESCONDiDa. CA 92029.619-746-4544, FAX 619-746-6579 -.;-:' SCS&T 9121029 June 13, 1991 Page 2 SITE DESCRIPTION The Monaco subdivision is an 11 lot subdivision located off of Rubenstein Avenue in the cardiff-by-the-Sea area of San Diego County, California. The lots which are the subject of this report are lots 1 and 2 of the subdivision. The lots had received previous grading in 1988 as reported in the referenced Report of Field Observations and Relative Compaction Tests. No significant vegetation had grown in the areas to be graded since the previous grading operations. SCOPE OF GRADING The subject grading operations were undertaken in order to lower the finished grade elevations of the subject building pads by approximately two and one half feet. As a result, the c,ut portions of the building pads required further undercutting in order to achieve the minimum recommended undercut of three feet below finished grade elevation. PROPOSED CONSTRUCTION It is our understanding that single family one and/or two-story residences of wood-frame construction are planned for the subject building pads. Shallow foundations and conventional concretE! slab-on-grade floors are anticipated. , AVAILABLE PLANS To assist in determining the locations and elevations of our field density tests and to define the general extent of the site grading for this phase of work, we were provided with an undated , grading plan prepared by Conway & Associates, of Cardiff, CA. SCS&T 9121 02 9 June 13, 1991 Page 3 SITE PREPARATION The subject grading operations, began with the removal of the existing soils on lots 1 and 2 to the new finished grade elevations. The soils generated by these operations were exported from the jobsite. The cut portions of the building pads were then undercut to a depth of approximately three feet below the new finished grade elevation. On lot 1, this necessitated undercuts on both the upper and lower portions of the split-level pad. The approximate horizontal limits of the undercuts are shown on Plate No.1 of this report. These limits extended to a minimum of five feet beyond the limits of the proposed structures as determined by grade control stakes provided on site. The soils generated by the undercutting operations were stockpiled for later use or placed as uniformly compacted fill in previously prepared areas. The soils exposed in areas to receive fill were scarified to a depth of approximately twelve inches, moisture conditioned, and compacted prior to the placement of fill. The soils obtained by the undercut operations were then replaced in approximate six to eight inch lifts, moisture conditioned to near optimum moisture content, and compacted to a minimum of 90% relative compaction by means of heavy construction equipment. During the site grading operations, the over-steep slope on the west side of lot 2 was cut back to a 2:1 horizontal to vertical slope ratio. , FIELD OBSERVATION AND TESTING 0- Observations and field density tests were performed by a representative of Southern California Soil & Testing, Inc. during the site grading operations. The density tests were taken according to ASTM 0 1556-82 and the results'of those tests are shown on the attached plate No.2. The accuracy of the in-place SCS&T 9121029 June 13, 1991 Page 4 density test locations and elevations is a function of the accuracy of the survey control provided by other than Southern California Soil & Testing, Inc. representatives. Unless otherwise noted, test locations and elevations were determined by pacing and hand level methods and should be considered accurate only to the degree implied by the method used. As used herein, the term "observation" implies only that we observed the progress of work we agreed to be involved with, and performed tests, on which, together, we based our opinion as to whether the work essentially complies with the job requirements, local grading ordinances and the Uniform Building Code. LABORATORY TESTS Maximum dry density determinations were performed on representative samples of the soils used in the compacted fills according to ASTM 0 1557-78, Method A. This method specifies that a four inch diameter cyl indr ical mold of 1/30 cubic foot volume be used and that soil tested be placed in five equal layers with each layer compacted by twenty-five blows of a 10- pound hammer with an 18-inch drop. The results of these tests, as presented on plate NO.2, were used in conjunction with the field density tests to determine the degree of relative compaction of the compacted fill. CONCLUSIONS , Based on our field observations and the density test results, it is the opinion of Southern California Soil & Testing, Inc. that the additional grading operations on lots 1 and 2 at the subject site were performed basically in accordance with the recommendations contained in the referenced Update Letter, and SCS&T 9121029 June 13, 1991 Page 5 the recommendations contained therein remain applicable to the subject site. LIMITATIONS This report covers only the services performed between May 30 and June 12, 1991. As limited by the scope of the services which we agreed to perform, our opinions presented herein are based on our observations and the relative compaction test results. Our services were performed in accordance with the currently accepted standard of practice and in such a manner as to provide a reasonable measure of the compliance of the grading operations with the job requirements. No warranty, express or implied, is given or intended with respect to the services which we have performed, and neither the performance of those services nor the submittal of this report should be construed as relieving the grading contractor of his responsibility to conform with the job requirements. If you should have any questions after reviewing this report, please do not hesitate to contact this office. This opportunity to be of professional service is sincerely appreciated. Respectfully submitted, SOUTHERN CALIFORNIA SOIL & TESTING, INC. #36037 , 9~U- DOU las iCks, SCS project Supervisor Adl DBA/DH/MH/rr cc: (6) Submitted (1) SCS&T, Escondido JOB NAME: Monaco Lots 1 & 2 JOB NO: 91211129 PLATE NO: 2 TEST NO. DATE LOCATION ELEVATION MOISTURE DRY DEN. SOIL REL.COMP. (percent) (p.c.f.) TYPE (percent) ----------------------------------------------------------------------------- 1 6-7-91 Lot No. 1 176.0 11. 7 119.2 2 95.2 2 6-7-91 Lot No. 1 177 .5 FG 8.7 121.3 2 96.9 3 6-11-91 Lot No. 1 167.5 9.1 123.6 1 93.9 4 6-11-91 Lot No. 1 169.0 FG 7.5 120.9 2 96.6 5 6-12-91 Lot No. 2 156.5 9.9 115.2 2 92 .0 6 6-12-91 Lot No. 2 158.5 FG 8.8 113.8 2 90.9 FG - Finished Grade MAXIMUM DENSITY AND OPTIMUM MOISTURE DETERMINATIONS, ASTM 1557-82 ----------------------------------------------------------------- SOIL METHOD TYPE DESCRIPTION OPTIMUM MOISTURE (percent) MAXIMUM DENSITY (pcf) 1 A Dark Brown, Slightly Silty Sand 8.0 131..6 2 A Brown, Silty Sand 12.1 125.2 """"JFJ.: IDA De MONACO --- - - ---- LOT 1 AREA NOT REMOVED FULL 5' DUE TO EXISTING UTILITIES ------ I I 3. FG 169.0' '1166,01 4 . F.G. 177.5' I --- - -- ~ VERTICAL ) CUT SLOPE AREA SHOWN ON PLANS AS BALCONY SUPPORTED BY PIERS OF UNKNOWN TYPE. NO UNOERClIT, OR OTHER TYPE OF ~ GRADING PERFORMED IN THIS '_D1ATE lDCATlON ~ /oj o 15 ~ I CAlE 30 I 60 I I 1"=30' ~ SOUTHERN CAUFORNIA SOIL & TESTINO,\INC. BY JEO/WDW DATE 6-1-91 NO. 9121029 PLATE #1 ,At" . SOUTHERN CALIFORNIA SOIL AND TESTING, INC. March 21, 1991 C.D.I. 920 W. San Marcos Boulevard, Suite 5 San Marcos, California 92069 SCS&T 9121029 Report No. 1 SUBJECT: Update Letter, Lots 1 and 2, Monaco (TM 4003-1), 1436 Rubenstein Avenue, Encinitas, California. REFERENCES: 1) "Report of Field Observations, Relative Compaction Tests, Monaco Subdivision", Southern California Soil and Testing, Inc., April 8, 1988. 2) Report of Geotechnical Investigation, Monaco Subdivision", Southern California Soil and Testing, Inc., October 23, 1980. Gentlemen: In accordance with your request we have prepared this update letter for the subject project. It is our understanding that Lots 1 and 2 will be developed to each receive a one and/or two story residential structure. Existing grades on Lot 1 and 2 will be lowered by approximately 2.5 feet. Lot 1: Lot I was graded as a cut/and fill lot. The cut portion was undercut by two feet. Lowering the pad by 2.5 feet will require further undercutting the cut portion of the lot by a minimum of three feet from finish pad grade. The bottom of the excavation should be scarified to a depth of 12 inches, watered heavily and recompacted. The foundation 6280 RIVERDALE STREET. SAN DIEGO, CA 92120.619-280-4321, FAX 619-280-4717. po. BOX 600627, SAN DIEGO, CA 92160 678 ENTERPRISE STREET. ESCONDIDO, CA 92029.619-746-4544, FAX 619-746-6579 ~I'-YOF~. . SCS&T 9121029 March 21, 1991 Page 2 recommendations provided in Report Reference Number 2 are still applicable and should be implemented. As indicated in Report Reference Number 1 a small vertical slope exists at the western end of Lot 1. This area should be reconstructed as a properly compacted 2: 1 (horizontal to vertical) slope. Lot 2: Lot 2 was graded as a fill lot with fill depths ranging from about one foot to 12 feel. Lowering the pad by 2.5 feet will result on a cut-fill pad. It is recommended that the cut portion of the resulting pad be undercut by at least three feet. The bottom of the excavation should be scarified to a depth of 12 inches, watered thoroughly and recompacted. The foundation recommendations provided in Report Number 2 are still applicable and should be implemented. As indicated in Report Reference Number 1, the fill slope at the western portion of Lot 2 is too steep. It should be cut back to a 2: 1 (horizontal to vertical) inclination. If you have any questions after reviewing our report, please do not hesitate to contact this office. This opportunity to be of professional service is sincerely appreciated. Respectfully submitted, SOUT~ERN CALIFORNIA ~OI~ AND TESTING, INC. I (1 ) L 1< 'i'.,j Ii I 'i 1,')_17) b'--"---- f v ~ / .,. . Daniel B. Adler, R.C.E. #36037 DBA:nr cc: (6) Submitted (1) SCS&T, Escondido ~ J U ;l .',' :;.;!-.....-~~ ~: '" I 8 If;, c."._______, 'J,:' El\'('i" ;.," '. ' , ":.,~ 1i")~\HL.~,j ~.,,-.,..--..,,;~& FOCUSED DRAINAGE STUDY FOR THE MONACO SUBDIVISION TM 4603 LOTS 1 , 2 PREPARED: 7/9/90 BY: JONES ENGINEERS INC. 3320 Kemper Street suite 204 San Diego, CA 92117 Prepared for: The City of Encinitas Department of Public Works JONES HYDROLOGY EVALUATION FOR THE MONACO SUBDIVISION BACKGROUND: This report presents a hydrology comparison between the existing and proposed conditions of lots 1 & 2 of the Monaco Subdi vision (TM 4603) to determine the impact the proposed development may have on the downstream properties. The study area is a portion of an eleven lot single-family residential subdivision. Presently, nine residences have been constructed. The study area is the remaining two lots of this subdivision which are presently vacant. SUMMARY: The site is located within a local hydrologic basin known as the "summit Sump". The southerly sub-basin of the "Summit Sump" is comprised of 38.0 acres and the subject site makes up an area of .70 acres within the southerly sub-basin. RATES Based on an analysis of a 100 year storm event the southerly sub-basin generates a peak rate of flow of 74 cubic feet per second (cfs) and the subject site under existing conditions generates a peak rate of flow of 1.04 cfs, which represents 1.4% of the total. Under developed conditions the peak runoff from the site is calculated to be 1.27 cfs The incremental increase of peak runoff due to development of the subject site is .23 C.F.S., which represents one third of one percent of the total peak run off for a .23 cfs, which represents one third of one percent of the total peak runoff for the southerly sub-basin. VOLUMES During of a 100 year storm event, the total volume of runoff from the southerly sub-basin is 8.3 Ac-ft. Based on the dimensionless hydrograph under buildout conditions the incremental increase in volume of runoff from the subject site is 3,654 cubic feet which equals .08 acre feet. This incremental increase in runoff volume represents one tenth of one percent of the total runoff for the southerly sub-basin. An analysis of the roof area of each proposed home indicates a total area of 5,470 square feet. Assuming a 100 year storm yields 4 inches of rainfall, the total volume of runoff collected JONES 1 HYDROLOGY EVALUATION FOR THE MONACO SUBDISION BACKGROUND: This report presents a hydrology comparison between the existing and proposed conditions of lots 1 & 2 of the Monaco Subdivision (TM 4603) to determine the impact the proposed development may have on the downstream properties. The study area is a portion of an eleven lot single-family residential subdivision. presently, nine residences have been constructed. The study area is the remaining two lots of this subdivision which are presently vacant. SUMMARY: The site is located within a local hydrologic basin known as the "Summit Sump". The Southerly sub-basin of the "Summit Sump" is comprised of 38.0 acres and the subject site makes up an area of .70 acres within the southerly sub-basin. RATES Based on an analysis of a 100 year storm event the southerly sub-basin generates a peak rate of flow of 74 cubic feet per second (cfs) and the subject site under existing conditions generates a peak rate of flow of 1.04 cfs, which represents 1.4% of the total. Under developed conditions the peak runoff from the site is calculated to be 1.27 cfs The incremental increase of peak runoff due todevelopment of the subject site is .23 C.F.S., which represents one third of one percent of the total peak runofffor a .23 cfs, which represents one third of one percent of the total peak runoff for the southerly sub-basin. VOLUMES During of a 100 year storm event, the total volume of runoff from the southerly sub-basin is 8.3 Ac-ft. Based on the dimensionless hydrograph under buildout conditions the incremental increase in volume of runoff from the subject site is 3,654 cubic feet which equals .08 acre feet. This incremental increase in runoff volume represents one tenth of one percent of the total runoff for the southerly sub-basin. An analysis of the roof area of each proposed home indicates a total area of 5,470 square feet. Assuming a 100 year storm yields 4 inches of rainfall, the total volume of runoff collected by the roofs is 1,806 cubic feet which represents 50% of the incremental increase in runoff which would occur under buildout. A system of perforated pipe placed in trenches with a gravel bed is proposed to store the storm water collected by the roofs. Enclosed are lot layouts illustrating the areas for trench systems to be installed. A Detail of the trenchis also included The remainder of the incremental increase in runoff, attributable to the construction of the two homes, is equal to 1/2 of 1% of the overall volume of runoff generated by the southerly sub-basin. This relative increase should be considered negligible. CRITERIA: The design standards, basic criteria, and procedures will be based upon San Diego County Flood Control District Hydrology Design and Procedure Manual. The existing and proposed conditions will be evaluated for the worst-case scenario (100 year storm) to analyze the most severe impact the development will have on the downstream properties. COMPUTATIONS: (100 year storm, 24 hour duration) RUNOFF FOR NATURAL CONDITION: Q = CIA C = 0.45 (Appendix "A" IX) "D" SOIL GROUP A = O. 7 Ac. P6 = 2.5 in./100 yr. (Appendix "A" XI-E) P24 = 4.0 in./100 yr. (Appendix "A" XI-H) tc = 15.0 min. (Appendix "A" X-A) I = 3.3 in./hr. (Appendix "A" XI-A) Q(NAT.) = (0.45) (3.3 in./hr.) (0.7 Ac.) Q(NAT.) 1.04 cfs RUNOFF FOR DEVELOPED CONDITION: Q = CIA C = 0.55 (Appendix "A" IX) "D" SOIL GROUP A = O. 7 Ac. tc = 15 min. (Appendix "A" X-C) i = 3.3/hr. (Appendix "A" XI-A) Q(DEV) = (0.55) (3.3) (0.7 Ac.) Q(DEV) = 1.27 cfs INCREASE IN RUNOFF RATE BY PROPOSED DEVELOPMENT: Q(DEV) - Q(NAT) = INCREASE RUNOFF BY DEVELOPMENT (1.27) - (1.04) = 0.23 cfs For 100 year storm SOUTH SUB-BASIN PEAK FLOW* = Q100 = 74 cfs.* INCREASE IN PEAK FLOW BY SITE DEVELOPMENT = Q100 = 0.23fs. = 0.31% OF TOTAL SUB-BASIN PEAK FLOW or 1/3 of 1% * Per Hydrology study for proposed 11 Lot subdivision TM 4603 7/31/86 By Conway & Associates (with no ground infiltration. ) TRIANGULAR DIMENSIONLESS HYDROGRAPH: Q H.; 'U '-' ~PEAK FLDW 'JOl-UME INCl<EA5EO OF 17"'V~~D CONDITIOI-J V5. E'XI!TIlNCl c.DNt7iTION ~151171JC:I tOI-.l\7rrlCN i?~V~u)~O COl-Jt7l11DtJ 1L L o :z ::J CC ;: Tp Tb ~I .1 TIME (hrs) Tp = Time to Peak, (hrs.) D = Duration, (6 hrs.) L = Lag Time, 0.6 (Te); (hrs.) EMPIRICAL EOUATIONS FOR HYDROGRAPH CONSTRUCTION: Tp = D/2 + L Tb 2.67 (Tp) RUNOFF FLOWS: Q 100 (DEV) = 1.27 Te = 15 min. (0.25 hr.) Q 100 (NAT) = 1. 04 efs Te = 15 min. (0.25 hr.) TIME TO PEAK: Tp (DEV) = 6/2 + 0.6(0.25) = 3.15 hr. Tp (NAT) = 6/2 + 0.6(0.25) = 3.15 hr. TIME BASE: Tb (DEV) = 2.67(3.15) = 8.4 hr. Tb (NAT) = 2.67 (3 . 15) = 8.4 hr. RUNOFF ( G. Po S. ) _OJ o ? ~ a. ~ C'\:\ b o "" ~ ~ ~ r -8~ ()~8 o 11 r-- z~~ CJ~~ --I .:::jUl"jt' f) ~ 0::1:;:- :;\0 ~ Z 11 0 (Jl' --J II () [11 ~ " ~CJ - m ~Z 0- ~~ ()\~ \:> ?' 1\ ~s. ~ I ~ J:> N rn OJ - ~Gf ~ . N '" ~ rn -J. 8 ,,,,,,,--. n !< Ii it' ~. E "" (":, ';;;-~ ~ 0 <.l'm z: -;-> ~ ~ ~~ \l~~ 3 Ii.' c -t.-Z Vol U\ 0 C> - en z: --'l ~~~ (j) \\ 1\ tmz -~ :" 1\'0 \;'0 <: <::> " to> W\JI{ i'~g 4='- <;:s;> nm \;J z. ll:~s:: !' -j m ~ VOLUME OF SOUTHERLY SUB-BASIN * V = 8.3 Ac-ft * VOLUME INCREASE OF SITE BY DEVELOPMENT V = (3,654 c.L) (1 AC./4,3560 s.L) V = 0.08 Ac-ft = 1% OF TOTAL SUB-BASIN VOLUME * Per ASL Consulting Engineers Master Drainage Plan City of Encinitas July, 1989. METHOD OF ELIMINATING INCREASED RUNOFF: The increase in runoff is due mainly to the buildings. Collecting and storing the rainfall from the roofs of the buildings will significantly reduce potential increases in runoff. This can be accomplished with roof drains connected to perforated pipe/french drains that will allow the runoff t.o seep in the ground in the yard area. ROOF RUNOFF STORAGE WORST CASE: 100 Year 24 Hour Storm P24 = 4.0 in. (0.33 ft.) Precipitation LOT 1: ROOF AREA = 2,750 s.f. x (0.33 ft.) = 908 c.f. 908 c.f. - 43,560 = .02 Ac-ft LOT 2: ROOF AREA = (2,720 s.f.) x (0.33 ft.) = 898 c.f. 898 c.f. - 43,560 = .02 Ac-ft TOTAL WATER COLLECTED BY ROOFS FOR STORAGE = 1806 C.F. or .04 Ac-ft VOLUME INCREASE OF SITE BY DEVELOPMENT = 3,654 c.f. or .08 Ac-ft VOLUME OF SOUTHERLY SUB-BASIN = 361,548 c.f. or 8.3 Ac-ft INCREMENTAL INCREASE OF RUNOFF VOLUME DUE TO SITE DEVELOPMENT = .04Ac-ft or 1/2 of 1% STORAGE CALCULATIONS FOR PERFORATED PIPE / FRENCH DRAIN: VOLUME OF PIPE PER LINEAR FOOT: A = -n:-r1. 6" P.V.C. = 0.5 ft. A = (3.14) (0.5 f. s. ) A = 0.79 c.f. AT 1/2 FULL = A = 0.39 c.f. VOLUME OF VOIDS =~ (1 + e) e = void ratio e = 0.5 (pea gravel) VOLUME OF VOID PER CUBIC FOOT: = (lee.F.) (0.5) 1 + 0.5 = 0.33 c.f. / c.f. VOLUME OF TRENCH: H = 4.0 (See Typical detail.) h = 2.5' = storage area w = 4' V=HWL V = hw V = (2.5 ft.) (4 ft.) V = 10 s. f. " TOTAL VOLUME OF TRENCH & DRAIN PIPE PER LINEAR FOOT: VOLUME = (VOLUME OF TRENCH) (VOLUME OF VOID) + VOLUME OF PIPE V = (10 s.f.) (0.33 c.f. / c.f.) + 0.39 c.f. V = 3.69 c.f. / l.f. LOT 1: REQUIRED STORAGE = 6,800 gal. or 908 c.f. LENGTH OF STORAGE TRENCH REQUIRED: L = 908 c.f. 3.69 c.f. / l.f. L = 246 l.f. LOT 2 : REQUIRED STORAGE = 6,750 gal. or 898 c.f. LENGTH OF STORAGE TRENCH REQUIRED L = 898 c.f. 3.69 c.f. / l.f. L = 244 l.f. \ j ~' ,t FINISH ~' CiIWUND ;/"';).,\ '?" ~y - ~ o:i t-i.~ '~"4> PVC ~1EP f'If!:" ~ ()t- <::) 8 dZ 0<1 Jlo tJ 0 () c:> " o ~ 6 FICTEl<. FAE>l<Ic. If) - () *~ l' II L) o o () 0 0 C> D Q o (/ :r (, o " If) ON GRA" a.. II ~. -"Jt_~. _. ~ o o {: W~4.0' , ~ (I.) TOP OF T~cH Will- ~ A MINIMUM OF Z FU:T oo.ow ~ fL.\?T1NG\, tt.JT\1e:: ~ac ern1€. ~H WIll- gt: A MINIMUM OF SftET AWAY FROM BUlL.DIN6 J WAU-S ,P1<OP\::OKN' BsuNDAR'() AND TOP a= Sl..Of'E:. LB.} DRAIN PIP!; WIlL- "*' 'n~I1T' UNE{) TO A MINIMUM OF IOflOET fji:DM TIlt:: e;ulWIN6" 14:) All- {CN5~UCT1OJ,AND MA1ER\ALS SHALL Bt<: Pla<.. SAN 1Aff6D a:tJNTY ~ICNAL STANDARDS. TYPICAL =>TOlZAQf./OI0/PA1INL11RENCI-l. N.T-S, I- I --.. " --""""" /- :/-- -- ,t-I/'" " -- l// ,'2 : /",1- - ---- ~/- -.-. '1/- --- .~ ~ ~ ~<I' d( =. '\j. -' Il.\, " N. PlF'G ........ -- --. I~ / &\ -y\_ \l) :+ e) J & -~ II.. o Z Q F ~t w. . ,.." ... I~ " ," .<. i" '- / / // / ' - If) . /L., -r-- C U .,' :>- u.... ;:' ~ .j.) ~ - .--"> -1::,.--" -' .(.. ~~~ ~- ,., '---' L0 <::' -- .~ ,- - --=..:;.J l' C tn ~ 11\--- <:!.) ill = <? ~ ' _ I . _f4 + lat: o ~ 4- I I . ., .':.. :11"r-'~.!.'. . ..1 ~ . . r - -- - J, S J..?'I~ '<dS).:E-- :-e -Gl / II I /. g UO'I~~ ,~ ~ -+- t.. ______ ....-- -~---r o'U'f'.fL ----::---'--- ~ '--.. -- I _._~ -------~ _,"F /-1 -/- / / C..-- . '. . -_:.-'- /'- {7L_~ /1, IT'I_- - - --t'.:=- ... I -- '...., - / I "-.j I. / / j \ __J ~\ J LOl N,Q. i ~ -- - ,";o.so. /111'10 '5'/ OAAlN P , \ , , "'~ LOT NO' 2. ~ ~~:,Il_~ol ~ . APPENDIX "A" I- RU"OFF COEFFICIENTS (RATIONAL METHOD) LAND USE Coefficient, C Soil Group (1) A B C D Undeveloped .30 .35 .40 e Residential: Rural .30 .35 .40 .4:; Single Family .40 .45 . SO @ Multi-Units .45 .50 .60 .70 ~lob il e Home s (2) .45 .50 .55 .6S Commercial (2) .70 .75 .80 .SS 80% Impervious Industrial ( 2) .80 .85 .90 0- --':) 90% Impervious NOTES: (1) Obtain soil group from maps on file with the Department of SanitaLon and Flood Control. .; ',\I1,':'e 3ctu31 conditions deviate significantly from the tabulated imperviousness 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 C.1.:-;C: sholl the final coefficient be less than 0.50. For example: Cons.Jer commercial property on D soil group. Actual imperviousness = 50% Tabulated imperviousness = 80% Revised C = i& X 0.85 = 0.53 APPE:'IlJ 1 X 1\ EGLf/lTIOAl Tc. eltL.1') .38S lC = 7/m~ 01 co/u:~nln:zf/o/1 L. L~n9lh or walt:'rs/lt:'d /I. f)1/I'~rt:'nce In eleval/on along ~/I't:'dly,. slope lint:' (Su ;?ppendix X.E) J;. L C Miles reel #.ours Minvles " 240 1-1 Feel SiJOO 40170 :10170 20017 ItJ " 1000 -" !l00 BOO 700 GOO ( "- "- soo "- 400 ~ ,,~ "-~"" "- "- "- "- "- "- "- I 3tJO 2IJO ItJO StJ as (tJ 3tJ NarE fFORNATURALWATERSH8i~ 217 R ADD TEN MINUTES TO COMPUTED TIME OF coj CENTRATION. ~ 10 5 (. H SAN 01 EGO COUNTY OEPARTMENT OF SPECIAL DISTRICT SERVICES DE SIGN MANUAL APPROVED -5. 1.( /P~ <;:tI5,., 5 3 18d .2 120 4 ItJO ~tJ 8tJ 7tJ 60 .3 I StJ 2 40 30 " SOOO , 4t(f,tJ 20 "- 18 3tJiJO "- 16 "- N "- 2000 "- 12 1800 "- 16tJtJ 10 l<ltJO 9 l-<'tJiJ 8 10017 7 900 800 6 700 btiO S SOO .,. "dO 300 3 200 L ;f NOMOGRAPH FOR DETERMINATION OF TIME OF CONCENTRATION (Te) FOR NATURAL WATERSHEDS DATE /2/1/69 APPENDIX X-A V-A-10 Rev. 5/81 3-1;( X10N3ddV co .::- VI ~ " ,., n :; r ~ .. " 0" ;;;~ ~- m~ "> ~ r ~ n" U> :co' . ro= 0 ~ ~ rr1 ~ n ~ n> \..oJ f'l z A1 o oo;!"O .., > -"'0 .. :::...; M'; . z 11 ::; 0 .. " ~ ~ o:E 0 0" ~;; "11 '< o ~ () :< nO z>=: > 0 3: -I::: M (5 Z ;::0 z i:n n ~ ~ rr1 E> ,.,:1 > " ~2: '" " ~ '" " S o '" S8/1 P"S1^"ti VJ VJ o .::- VI VJ o .::- VI ...,on '-"'0 o-.,c: 0:<>- o",:::j n:t-< ~rr'o ==t~"T1 ~ V> 00:<> ,-...,z V> 0 >- z'" -'" :;;!o -l .... o z ~ ) - I'-:l 0 r-..:> 0 VI = I'-:l <:::> -~ --= " I \) ~ -< ~ r-n r en 0 !;:o ~ ""0 ~ ...... -. r- 0 a c:: c'".> ---., :::: - I - :t;a :J: --:-" r- 0 ,.;;.. cn - . I c:: VI 0 ;;::;J J.l .- -',:;II ..." : &....... . -l ...... -C " I./---i ::-:: 0 ~ ~ ,-2 en 0 ., I f"11 , '^' -< n , '- 0 r'l"I - > ~~ , :::::l - lO -3 n en ~ . ..... -t -- VI 0 - ,. c:: f"~ " ~ ~ ~:~ " " " " .. 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Vl' ::l 1'0 C> 1'0 01 --0--... w U"1 Vl 0'1 " . . o UlOU"l aUlD (Sa4JU~) uo~~~~~d~JaJd JnOH-g ..... ~ w ~ <+ n II " >I- Z \}.\ 0 <+ )> tJl "0 "0 ~ - ~. n '" '" '" -... (1) cr ::r < ~ -s ..... m In (1) <+ '" 0 .... 0 -... m 00 '" Vl m -S <+ )> '" ;0 '" m m <0 z ~. t:I 0 .... '" >< >< .... , )> U' >I- -0 m " 3 ~. N '" \J' 1'0 ~ ~ ~ )> 01 ... W 1'0 ~ <:;) "0 ~ ~ ~ ~ ~ ~. "0 -S ~ m ~. rt--; "0 <:;) 0-0 M-M-n-> o 3:-1 N." n n ::r ::r ~-S ...,~ o ::T ::T a.. roOl::r~"""S rt- '" m ~. 0'" u Co> Qlc..... '" =:1m 0 - rt- '" rt-:O;: rt-~ <:;) ~c: -.c t/) =r3 0 ~. ~ ~ ::r mN V> tQPJm-s '" 0 o~ m'" m en Vl~-'cT =:I ~ . "0 V> " n ~. 0- m rt- 3 -S "''' ~ n ::r -S ::r en PJ_OIPJCD ..., "T1 rt-m ~~. ::r -S rt--S - '" ~""O 3 n 0 0 ~. -=:I '" . ~. II> ::r 0..0(1)0-'- -S -S 0- =:1m -S -S C:"O 3 =:I II> m rt-"O "0 :0;:' "0 '" "'- )> '" rt- -S -s - -S ...-, -s rt-..... "0 CT rt- ::r m m ....."0 0 .;:)m 11>'" "0 m ::r -S n n ::;r..., n ..... ~.m 0 - ---,.(1) m "'"0 ...,~. ~. '" c: "0 "0 ::;n 0- '" ...,00 n <0 ~. <0 ~. - ~. c: c.. -- -S ::I '" '" ::r rt- ..... ....."0 ..., =:I ..... '" rt- '" '" ::r ~. CD ~C+C+3 ~. =:I m ..... ..... ~m..... om :TDI 0 "''' ::r - ~. '" 3: c> c.. m \:J " ~ II> m 0 0 -S ~ '" II> '<- '" :3 QI -". ",,< ~.'" N ..... "0 '" 0 c: ..., =:1m 0- m'< 0 0 <<> '" '" . ~m 0- I ~. '" m ~ .....m ..... 0- '" ~ ~ ~3 ::rnm c: ..... ..... "'" o ~. 0> m :; ;1 -S ". 0 ...,..., "0 po "0 m ..... V> no... -'. rt- '" ..... =:I 0 '" ~. -S -S '" tnm --c -t,ro 0 '" ~. -" ""n " "'..., " ~ t::l "? m n .....m en ~ ,.,.. ~.....'" --'~ ~ n m r> ---.0 (/) c: c: ::r c: ~ n '" 0- :r: m ..., -S 10 '" en..., m '< " < rt- ~. CT tn '< o-o-n m 0 a. --' ~- -s'..::: '" m m --0. '" ..., rt- 011> '" ~ a. 0 ::r ...,0 0 -S m rtt:::l ::r'< ~ C> ~ )> a. ..... c: '" ..... m 0- "0 V> en m ~ " m n ..... m a. N 0' "T1 ..., m .0 c: m '" n '< - '" "0 1'0 ~. ~ ~ ..., I >I- -0 "0 -1'0 en "..... " ~ "" >I- , , , '~ ~ SOUTHERN CALIFORNIA SOIL AND TESTING, INC. 8280 RIVEROALE ST. BAN DIEGO, CALIF". 92120 . TEtE 280.432 t P.O. BOX. 20627 SAN OlEO 0, CAllr. 92120 6 7 l!t ~ N T I!: .. P lit I 9 IE: 9 T. IE: BCD N D t D D. C A L ,,,. 9 2 D 2 !!I . T l!: L I!: 7. & . 4 !!I . 4 February 16, 1988 Mr. Bill Lawrence -,0 1973 Swallow Lane Carlsbad, California 92008 SUBJECT: Vertical Drainage Rubens tel n Avenue, California. SCS&T 8621195 Re~ort No. 3 Pit Design, Monaco Subdivision, 1426 Cardlff-by-the-Sea, San 01 ego t.ounty, Gentlemen: In accordance with a request from Mr. Chri s Grabowsk i we have revi ewed a subdrain detail for two proposed vertical drainage pits to be located at the eastern end of a proposed property line drainage channel. It is our opinion that, from a geotechnical standpoint, the vertical drainage pit detail is acceptable. However, it is our opinion that filter fabric should be installed between the filter fabric and the rock. With regards to a proposed 4-i nch perfora ted pi pe in the center of the pi t, we agree with Mr. Sandifer that this may create a maintenance problem unless silt is prevented from entering the test pits. If you have any questions regarding this report, please do not hesitate to contact our office. Respectf SOUTHERN ed, OIL & TESTING, INC. Daniel B. Adler, R.C.E. #36037 DBA:rnw cc: (6) Submitted (2) Conway and Associates, Inc. (1) SCS&T, Escondido SOUTH RN CA IF" JONES TRANSMITTAL MEHORANDUM ENGINEERS, INCORPORATED CONSULTING ENGINEERS JUt 9 TO: Craig Olson City of Encinitas, Community Development Dept. Darcy Jones ~ Jones EngineerKInc. July 19, 1990 Luedtke Drainage study FROM: DATE: SUBJECT: Craig: Please find enclosed two sets of a revised drainage study for the Luedtke property. Please forward one set to Bob Warren. If there are any questions or any revisions required, please contact me at your earliest convenience. Thank you for your consideration in this matter. I will look forward to hearing from you. 3320 Kemper Street, #204 San Diego, California 92110 (619) 223-9838 CIVIL ENGINEERING / LAND SURVEYING JONES ENGINEERS, INCORPORATED CONSULTING ENGINEERS FOCUSED DRAINAGE STUDY FOR THE MONACO SUBDIVISION TM 4603 LOTS 1 & 2 Prepared By: JONES ENGINEERS INC. 3320 Kemper street suite 204 San Diego, CA 92110 July 17, 1990 Prepared for: The city of Encinitas Department of Public Works 3320 Kemper Street, #204 San Diego, California 92110 (619) 223-9838 CIVIL ENGINEERING / LAND SURVEYING HYDROLOGY EVALUATION FOR THE MONACO SUBDIVISION BACKGROUND: This report presents a hydrology comparison between the existing and proposed conditions of lots 1 & 2 of the Monaco Subdivision (TM 4603) to determine the impact the proposed development may have on the downstream properties. The study area is a portion of an eleven lot single-family residential subdivision. Presently, nine residences have been constructed. The study area is the remaining two lots of this subdivision which are presently vacant. SUMMARY: The site is located within a local hydrologic basin known as the "Summit Sump". The southerly sub-basin of the "Summit Sump" is comprised of 38.0 acres and the subject site makes up an area of .70 acres within the southerly sub-basin. RATES Based on an analysis of a 100 year storm event the southerly sub-basin generates a peak rate of flow of 74 cubic feet per second (cfs) and the subject site under existing conditions generates a peak rate of flow of 1.04 cfs, which represents 1.4% of the total. Under developed conditions the peak runoff from the site is calculated to be 1.27 cfs. The incremental increase of peak runoff due to development of the subject site is .23 C.F.S., which represents one third of one percent of the total peak run off for the southerly sub-basin. VOLUMES During a 100 year storm event, the total volume of runoff from the southerly sub-basin is 8.3 Ac-ft. Based on the dimensionless hydrograph under buildout conditions the incremental increase in volume of runoff from the subject site is 3,654 cubic feet which equals .08 acre feet. This incremental increase in runoff volume represents one percent of the total runoff for the southerly sub-basin. An analysis of the roof area of each proposed home indicates a total area of 5,470 square feet. Assuming a 100 year storm yields 4 inches of rainfall, the total volume of runoff collected by the roofs is 1,806 cubic feet which represents 50% of the JONES 1 incremental increase in runoff which would occur under buildout. A system of perforated pipe placed in trenches with a gravel bed is proposed to store the storm water collected by the roofs. Enclosed are lot layouts illustrating the areas for trench systems to be installed. A Detail of the trench is also included. The remainder of the incremental increase in runoff, attributable to the construction of the two homes is equal to 1/2 of 1% of the overall volume of runoff generated by the southerly sub-basin. This relative increase should be considered negligible. CRITERIA: The design standards, basic criteria, and procedures will be based upon San Diego County Flood Control District Hydrology Design and Procedure Manual. The existing and proposed conditions will be evaluated for the worst-case scenario (100 year storm) to analyze the most severe impact the development will have on the downstream properties. COMPUTATIONS: (100 year storm, 24 hour duration) RUNOFF FOR NATURAL CONDITION: Q = CIA C = 0.45 (Appendix "A" IX) "D" SOIL GROUP A = O. 7 Ac. P6 = 2.5 in./100 yr. (Appendix "A" XI-E) P24 = 4.0 in./100 yr. (Appendix "A" XI-H) tc = 15.0 min. (Appendix "A" X-A) I = 3.3 in./hr. (Appendix "A" XI-A) Q(NAT.) = (0.45) (3.3 in./hr.) (0.7 Ac.) Q(NAT.) = 1.04 cfs JONES 2 RUNOFF FOR DEVELOPED CONDITION: Q = CIA C = 0.55 (Appendix "A" IX) "D" SOIL GROUP A = O. 7 Ac. tc = 15 min. (Appendix "A" X-C) i = 3.3/hr. (Appendix "A" XI-A) Q(DEV) = (0.55) (3.3) (0.7 Ac.) Q(DEV) = 1.27 cfs INCREASE IN RUNOFF RATE BY PROPOSED DEVELOPMENT: Q(DEV) - Q(NAT) = INCREASE RUNOFF BY DEVELOPMENT (1.27) - (1.04) = 0.23 cfs For 100 year storm SOUTH SUB-BASIN PEAK FLOW* = Q100 = 74 cfs.* INCREASE IN PEAK FLOW BY SITE DEVELOPMENT = Q100 = 0.23)S. = 0.31% OF TOTAL SUB-BASIN PEAK FLOW or 1/3 of 1% * Per Hydrology study for proposed 11 Lot Subdivision TM 4603 7/31/86 By Conway & Associates (with no ground infiltration.) JONES 3 VOLUME OF SOUTHERLY SUB-BASIN * V = 8.3 Ac-ft * VOLUME INCREASE OF SITE BY DEVELOPMENT V = (3,654 c.f.) (1 AC./4~~560 s.f.) V = 0.08 Ac-ft = 1% OF TOTAL SUB-BASIN VOLUME * Per ASL Consulting Engineers Master Drainage Plan City of Encinitas JUly, 1989. 4 JONES TRIANGULAR DIMENSIONLESS HYDROGRAPH: h '<f) k-; 'eJ "-' ~PEAk FLOW "IOl-UME 1NC.IZCA~e:. OY 17~V~WP1,V CONDJTlDN V5. E'XI:1TlN~ CONtJlilot-J ~15t:nt-.lC:l C.OIJt7I11CN %V~LbfE:D COl-Jt7l110W h... IL Cl :z :::l ~ ;: Tp 61 Tb TIME (1/\10"5.) -I Tp = Time to Peak, (hrs.) D = Duration, (6 hrs.) L = Lag Time, 0.6 (Te); (hrs.) EMPIRICAL EOUATIONS FOR HYDROGRAPH CONSTRUCTION: Tp = D/2 + L Tb=2.67 (Tp) RUNOFF FLOWS: Q 100 (DEV) = 1. 27 Te = 15 min. (0.25 hr.) Q 100 (NAT) = 1. 04 efs Te = 15 min. (0.25 hr.) TIME TO PEAK: Tp (DEV) = 6/2 + 0.6(0.25) = 3.15 hr. Tp (NAT) = 6/2 + 0.6(0.25) = 3.15 hr. TIME BASE: Tb (DEV) = 2.67(3.15) = 8.4 hr. Tb (NAT) = 2.67(3.15) = 8.4 hr. JONES 5 RUNOFF ( c:., ~ s. ) o s:> ~ C> ~ r-;:, b o "" ~ c: ~ ~ r -0~ (J;0a o II r-- Z~~ CJ=-~ -I ':::j(SI "it' k) ~ o::C:,,- :010 ?: z.1-lS (fl' " 0 [Il ~ " ~O - m t)\(~Z (""' ~t. - \:> 0;;-- 3 7\\ ?' 1\ U's. I \S\ J:> N rn ~{i ~ fA - . .... Ii' rn l':l --l 8 ,-. &> !< j: -3:. E "" ("'.> ';::;-~ ~ 0 (J' m G ....., ~ ~~ :3 ~: c: \I~~ .J::..-Z- 0 C> vl U\ Z. _ en (j) --'l ~~~ \\ II t z. ~"" - . l\'O 1>'0 C <::> -n tIP wlj\{ i''S:.c:. ::\?- ~ me I,ll L ~zE ~ -I -t s: en ~ JONES 6 METHOD OF ELIMINATING INCREASED RUNOFF: The increase in runoff is due mainly to the buildings. Collecting and storing the rainfall from the roofs of the buildings will significantly reduce potential increases in runoff. This can be accomplished with roof drains connected to perforated pipe/french drains that will allow the runoff to seep into the ground in the yard area. ROOF RUNOFF STORAGE WORST CASE: 100 Year 24 Hour Storm P24 = 4.0 in. (0.33 ft.) Precipitation LOT 1: ROOF AREA = 2,750 s.f. x (0.33 ft.) = 908 c.f. 908 c.f. - 43,560 = .02 Ac-ft LOT 2: ROOF AREA = (2,720 s.f.) x (0.33 ft.) = 898 c.f. 898 c.f. + 43,560 = .02 Ac-ft TOTAL WATER COLLECTED BY ROOFS FOR STORAGE = 1806 C.F. or .04 Ac-ft VOLUME INCREASE OF SITE BY DEVELOPMENT = 3,654 c.f. or .08 Ac-ft VOLUME OF SOUTHERLY SUB-BASIN = (lQ?f;.- INCREMENTAL INCREASE OF RUNOFF VOLUME DUE TO SITE DEVELOPMENT = 361,548 c.f. or 8.3 Ac-ft -'2~(~L'1' -- ~ .04Ac-ft or 1/2 of 1% JONES 7 STORAGE CALCULATIONS FOR PERFORATED PIPE I FRENCH DRAIN: VOLUME OF PIPE PER LINEAR FOOT: A = r "1 6" P.V.C. = 0.5 ft. A = (3.14) (0.5 t. s. ) AT 1/2 FULL = A = 0.39 c.f. .... "- f1~ '1\'("- ~ :,\<.\"(,1..,,,," =. '2..0 ~1 \)7.. 1'''- A ~ .'-0 srtYfi- VI( = 0.79 c.t. tl / '/ ? ~ 'P" <... 0;0. '& \...= . l_""DT'" '7 VOLUME OF VOIDS =~ (1 + e) e = void ratio e = 0.5 (pea gravel) VOLUME OF VOID PER CUBIC FOOT: = (l.e.F.) (0.5) 1 + 0.5 = 0.33 c.f. / c.f. VOLUME OF TRENCH: H = 4.0 (See Typical detail.) h = 2.5' = storage area w = 4' V = HWL V = hw V = (2.5 ft.) (4 ft . ) (1 'rt ') <lr:~~ TI-le 'PI?"'> V = 10 ..s-:-f . ff~l;;_. ro:. JONES 8 TOTAL VOLUME OF TRENCH & DRAIN PIPE PER LINEAR FOOT: VOLUME = (VOLUME OF TRENCH) (VOLUME OF VOID) + VOLUME OF PIPE c V = (10 ,)S.f.) (0.33 c.f. / c.f.) + 0.39 c.f. V = 3.69 c.f. / l.f. LOT 1: REQUIRED STORAGE = 6,800 gal. or 908 c.f. LENGTH OF STORAGE TRENCH REQUIRED: L = 908 c.f. 3.69 c.f. / l.f. L = 246 l.f. LOT 2: REQUIRED STORAGE = 6,750 gal. or 898 c.f. LENGTH OF STORAGE TRENCH REQUIRED L = 898 c.f. 3.69 c.f. / l.f. L = 244 l.f. JONES 9 MONACO SUBDIVISION / 2 LOT HYDROLOGY STUDY COST ESTIMATE FOR STORAGE / DISSIPATION TRENCH 1. 6" P.V.C. PERFORATED DRAIN PIPE @ $15.00/L.F. LOT 1 = 246 L.F. @ $15.00/L.F. = $ 3,690.00 LOT 2 = 244 L.F. @ $15.00/L.F. = $ 3,660.00 TOTAL = $ 7,350.00 2. GRAVEL TRENCH @ $0.50/S.F. WITH FILTER FABRIC (4'x 4' TRENCH TYPICAL) = 16 S.F./L.F. = $8.00/L.F. LOT 1 = 246 L.F. @ $8.00/L.F. = $ 1,968.00 LOT 2 = 244 L.F. @ $8.00/L.F. = $ 1,952.00 TOTAL = $ 3,920.00 LOT 1 TOTAL = $ 5,658.00 LOT 2 TOTAL = $ 5,612.00 TOTAL COST FOR STORAGE DISSIPATION TRENCH = $11,270.00 JONES 10 ~' v: FINISH ~' <4ROUND ",,,,,,,,-,>,,,V-- ~'< - t 02 ~,~ i ~"4' PVC ~1tD PIPE' ~ ~ <1.. <::> " .0 06 cJo lS o. ..... 0 '" t! 0 " d 0 / iJ o Q FI CfEl( 10 FAet<IC - () I \l' -lOr ~ ~ -I GRA"a. ";! --__ -"Jt_____ o o o .?<0- I' -. I !<:: w ~ 4:-~----------1 (I.) TOP OF TREl\\cH Will & A MINIMUM OF Z flET eaow ~ fWTl~, tt.JT\1E' ~c:l'< OFlJ1E."TRENCH WIU- et: A MINIMUM OF' 5ffET AWAY FROM e,UILDINc. J \^Jt>.\..L.S JPROP'EOR1'-{ eaJNDARfj AND TOP a= SLOf"E:. LB.} DRAIN P\1'l; WIU- f?E' 'nc,l-lT- LINED TO A MINIMUM OF loraoT fI':OM TIlE' e;'U1L.DIN6,. (4:) ALL- CONS~lK.n()J .AND MA1ER\ALS SHALL e,~ F"t:R SAN IA~ CCUNrY ~ICNAL €>TMlDARDS, o o TYPICAL =,TOlZAQI=:/ t7J~IPA1IN~ 1RENCl-t. 11 N.T-S. '/ .~ ~ ~ ~ <I' <!I =. \l. --' \u, \l ,- I ~ --. " N- PlPG ~--.. /- '- -- ~ " " /. /' ,"----... / //// , / /-r-c d: ~ - -:> - -.l. -~, ~~ c. 10 C:' ~l ,> . .: ~ ;0.; I / - -- o {(\ ~ 11\-- ~ U\ 0 --- ~ 4- - - -- - 'f.- + - I.... Ice;: - - :~.:'_ L - 1/ "- ~ - 0 ~ -~ r ~ +- .r J , , " I~ S JL0"t::::> / -lJ -5--' D I O~ ~i'- ;:41- -Y\_ ---.."... \0 ,.,' :+ ,k'/ ~ -' ~ -t 1/ ,'2 : II /- - ----- 1--' --- I- I Il o ---1 ~ , ~t W. t ,.." . '<ds)tE-:-e -Qj / II I /. O',lO'<:::l';::; C" ~ I (to .~ -4- ~ .----- ~ C '~ J ----- '-- I --.... -- L' . '. .' . --- ,,',,:. ;'1 '-/0 / / ,r- ( _L_~ - J-+t~i-- ~ /' /LJ U2J~ ~\ J LOi Ny,'i ~ -- - I...~I , \ ""''-~ " ~Sljl?AGEu LOT N Q.; 2.. ~ ~~:lll_=-Ol 13 APPENDIX "A" JONES RUNOFF COEFFICIENTS (RATIONAL METHOD) LAND USE Coefficient, C Soil Group (1) A B C D .- 8 Undeveloped .30 .35 .40 Residential: Rural .30 .35 .40 .4;) Single Family .40 .45 .50 G Multi-Units .45 .50 .60 .70 Mobile Homes (2) .45 .50 .55 .65 Commercial (2) .70 .75 .80 Q- .vO 80% Impervious Industrial (2) .80 .85 .90 O' ._':J 90% Impervious NOTES: (1) Obtain soil group from maps on file with the Department of Sanitat:on and Flood Control. .' \'hc','e actual conditions deviate significantly from the tabulated imperviousness values of 80% or 90%, the values given for coefficien~ C, may be revised by multiplying 80% or 90% by the ratio of actual imperviousness to the tabulated imperviousness. However, in no C;1:-;<: sholl the final coefficient be less than 0.50. For example: Cons.Jer commercial property on D soil group. Actual imperviousness ;;: SOCJa Tabulated imperviousness ~ 80% Revised C ~ ~ X 0.85 ~ 0.55 APPEND J X 1:\ EGLl/1TIOA/ Tc. eltL.J'~ .385 JC = 7lm~ 0/ conc(:/1Inv'/on L. L~n9lh or wa/~rsh~d /I' f)1/I'~r~nce In ~/~va.r/on a/t>hg ~rl'..dil''' slt>,o~ lin.. (S..t: ~"""h&X X-B) ;;;. L . C MII~.s reef Hours MihU/~s <I ,NO H ( Fe~1 StJtJtJ 4tJtJtJ :sotJo 201717 117 '" ItJIlP -, 500 800 700 GOO ( '"'- '"'- Soo "- 400 ~ ,,~ ~~ " "- "- "- " " "- I 5 3/J/J 2tJO 100 So 10 as 30 NOTE VOltNATliRALWATiRSH8i~ 20 R ADD TEN MINUTES TOj COMPUTED TIME OF CON- CENTRATION. ;J 10 5 \. H SAN DI EGO COUNTY DEPARTMENT DF SPECIAL DISTRICT SERVICES DE SIGN MANUAL APPROVED -5. 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Consulting Structural and Civil Engineers 135 Liverpool Dr., Suite A Cardiff. CA 92007 TEL: (619) 753.1453 Ptojecl M 0 t'\ f\CD ByD wAtL Date /J..v/e,1 Sheet No. lOl '5 Subject DZt\1 N"'-6E::. Job No. e,G.oo"l 'DETEIi?MIN€. CA..-ACI?"Y OF Ille ~ Pires Tf/AT PLOt<! INT,;) /lIE CAANNEL. IF meY' WERE. FdLL. 2 1'5" rlPes S7( EACH, /,23 ':?f' (87)(Z} sF (30) = Zl?sr:,.r: I I~I/ !'"If'e ce?o' /.23 = 36.8 C:t: 2.50 _? C:E 8EtoW nIlE >\ C/lPACI!Y OF AN 18'1 FEKFoR"'iTED riPe !"tAC:cD C;.//INN€(.. rUt(. L.EN6nl. I . I /,5 @ :880 -c /,77 <;;r ('?t:;Q'l ~ -';.\4 ~ tf, 71t;; c-r: \l '\~ ~-..- rc>7A(... plFe '5ToK'A6t: c.AFAc:.ITY qzZ c.f '\,,\-:3. E~r/M~T€ ,PERCOL.ATIPN /!I)TO ,HE rt::RFORATf3P F'Fe -n;::e^JCH. (13r\'5ED ON 'Pe;(c Te?T~ .r /-lAvE "UN -7 Witt ASSUME A) Pt;Kc KATe: OF -;t;:> MI;J/IIJ 3- t\-::hUM€. TR.€NO.( INIDT'f-t == 2.S' ?~~C. ME-PI =- 2.'5 ('380') - '-15D ~r '". \''''\= 40 /VII,J = /.:5 IN IN --;;R. 555 1'0,e c;. !lol/;{"f, 7 /2 ~/C. WOULD IAY'IL IZA re 7J.1'E 6R~tlND rO/A/... cAf"AC.lrY FoR {",. ;.lot/I< 5 - /~ ~5 c-:L WA IE/e.. ""2'7"\ (::" CONWAY & ASSOCIATES, INC. Consulting Structural and Civil Engineers 135 Liverpool Dr., Suite A Cardiff, CA 92007 ~J;:),: (619) 753-1453 Project ;v1 o,..)AC. () By D WfIl t Date / ;0~i' Sheet No. 2- 01 '5 Subject v,i'/i,r-jA6€- Job No. 8600 "t /D(AL I<AINFAC{., Pol( A ~ I-Iowe "SToR tV! 8ASeO oA/ c..ot.l;J 7Y of SAr-J VIt:60 l~o?LUIIIIlL MAI'?, 2 yR - ~ H~ '5-roR M ~ /.e2.IN. "5 y~ -'" HI< '5~fl/v1 ~ 1,'5 IN. 10 'II? -&, #1( -sroRH = 1.7 IN. TOTAL ?a,SDlvlsIOAJ I? "3.11 ACEf'::;) 70% vJ/il /<?l/,) OFP BA?E.D ON !-IY[)I:OI... 06'(' ?TW~Y. '?,Il {,70) .,.. Z,\ r3 "'C.~ES = '71,8";00 'OtfT QUANTITY rO!Z. 2 Yf( -SroKI'-1 :0.: <S' '(I< :c- /O Y/2. ~ Q(,41 C;!, II, e"54 C;r 1?,131 q TOTAL CI1I'ACI'TY of' !"Irfi"':. -f- c::. HI2. I"etc - 1(,,>;;,5 cjC VKOM (8A"5E'O OAt Tl!c-:,€ Plf"e ";12c-;:, AND A<;;.<;;UM PT70^);, \ -nil":> -='-;S NOT APPEAR 10 AI\! ACc€PTA';;ie 5bLUTioA/) '-0 HOLD A- z. "IF< "3>Tol</0 OA/ 51T€: 87/1 c.r. AimltD I-ll)vJE -ro rEJCC 1"-' c::. lies) 1."53' /111< ~ IB, -I /N/'fle'" ?z.s ,,::VN. WOLILD ($'" ,A. VER, FA"',Tf'II'f:.GI'AiE. IU) ~, -z. "5 -'!iW IIJ ;;;::: or:: C => - 0 l- .'.... ..... ~ I l- e;) - c: 0.:" <::t -- li.I U >- L!.J I a.:: N c.. LI.- e ~ U') =:) _J 0 <:': :?: - :> ~. c.b' => -I c... c.:: 0 en a::t - LU I >- c:::> I - N l Ib % o .... I- .o~ C> .... wz ....<( . C <II %....-' <(00 <II ct: ....!z!z owo . :o::u >-1- I-ct:c z<(o ::>0..0 ow-' uc.... . '^ ..- ,02 ilol. , .. u > 0 " .... .. '" " '" :z: ~~ 1:'" ~ ~ - ".. '^ t.l .. ~ .::- u ~ B ~ 7._ W sp... ::E 0 ~ - ~ '" ' o u;... U it: u ",0 ... tL. x..J . ;. 0 Il. 0 co ~ ~ '" . t f-c 9 Q , - "'J; Z ~::: - , u\ t ~ 0(;:: 0 ~ .:t ~ .... 0 Il. r: Q 0 . f-o ~ '" \f\ .... n: u .... < u- 0.. it:. N t.l ~ 0 () 0"" .u:Z: , Vl 0 u tJ' . z ::> ..J.( ~ " tl\ z" o~ 1:", ~ - ZO " .. '" .. ~ i:J '" .. II-A-2 ~ " ~ u z " on ,I '^ .:t o .... - LI\ .- ;;.> ~r~ . -0. '^ - o .... '^ -.::- . .... ~ c:: ::c 0 tG. ::l U "" 0 ,0 - ::i: ~ I ~ w t- o:: - ~ C. LI\ Ls.J 4' ..... >- U I (.I') bY It':l ::I: tt: LL.. I- ::: . C- O ..... -~ (I) => -I cd: (:) - orp :> - :::> I -I c.c 0- Il\ I 0 , n:: (I) ~ Dl I u L!.I !: >- 0: c:::> " - .. I l 0: 0 Ln " "" :r: "'!( 0" j::~ ~ ..I Ul .. .. 'i' . '" ... .. :aoo ....z l- X w ...'" , , D: :( u en" 0 Il\ Il\ < ~ i: 0 Il\ -:t "" -:t "" - 0.. z Ia. 2"--' W <.0 "'00 . Q". VI a: "" . u 5 Lt.!;:!;: "" ",0 :i oJ ~ 0....0 < 0: >-~u . ~m e.. !;:a:o .." < - ::J~g % " 0.... -' ::> :' .. uc.... , .. ~ - ':t UJ I C' ..c.;:: ,.... 0.. b!.. . C;;:) ..... -e::: en ::;:) ....I Q (r..1: ~ - - :;:.:.. I :;::, 'W -I U\ ~ , - c:: C:J ~' V? c:1: ~ UJ 1 .. >- u > I I .u;:, 0: - .-- .. 0 0 l .. P'\ 0: - .. :r: I "!; 0.. 1:.. <.. w ~< - U t! ~ U\ ~ 0: ! 2 .:r u I.1J :c" ~ z :>; ,,< ;Ji . <" ::au' z o _ ~ 0 U:o [ .... I- l:.. - oJ o~ '1; 0 c: 0 . 'a ~ g . c..... ~ I-- .. . co wz . Z I- [ ....<C - j t ~ <;: - "'V> U\ 0 U\ U\ . Do ;.!: Q 0 0 ' , ~ ~tJ Zl1....J 4- P'\ 4- P'\ <COo I <C u- V> <x:: . I ll. -.. 11..!z!z P'\ w"" [ P'\ I t:l < 0 .. . owo .u= >-j!:u III 0 u I ..J~ !z<x::o ~ < < ::>o::g i :co: om ow..J 1:: UOl1.. I <- C "" ~ ! .. i .. < , u I .. .. .. .. II-A-Ij -- -. '"f1!!!!' ,(/ :?>:~'"-" ",. ~.:,<\ .... .'.;:' '- r . .~ . .: · '< ~:,' _..>J,- CONWAY & ASSOCIATES, Inc. Civil/Structural EngineerS Surveyors / General / Engineering Contr~ors / ~ ~ '-1 8.JL .t"'~' ~oN~~ , PROPOSED 11 LOT SUBDIVISION T.M. 4603 r!1' JJ\ ~Q \- (, ~--o-l\ Jl ~l' ~ Prepared July 51. 1986 224 Birmingham Drive . Cardiff.by.the.Sea, California 92007 . (619) 753-1453 I ,,,t" , 1 t I ! " , , I 'I . i i. ., j . . . j ~ 1 , ., j , ! ~ :1 . I ., 1 , , . l ! j j 1 'i :1 j J i i ; , -,; '-.;;;'~~~~:'- ':~.~.:'.~ o. .,~' ~ . '-'.J"' , \,..J INDEX 2~cti.Q!l r~&~ I . Purpose of Study............................. 3 II. Area/Site Description. ......... .............3 III. General Approach of Study...~...............4 IV. Method of Analysis.......................... 4 V. Conclusion/Recommendations..................5 APrr;N!m~ A. References..;................................. 6 B. Vicinity Map.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 C. Aerial Photograph of Site.... ... ...... ...... .10 D. 200-Scale O~tho-topo of Sump Area............12 E. 20-Scale Topo of South Sub-Basin. ...... ... ...13 F. Design Rainfall Data.....,...................14 G. Sump Storage Capacity Calculations. ......... .16 H. Offsite Hydrology/Hydraulics Calculations....22 (3 Sheets) I. Onsite Hydrology/Hydraulics Calculations.....28 (3 Sheets) .-'. t , . '.-' -, ~ \ ) t CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General / Engineering Contractors .' Prepared July 31. 1986 , County of San Diego Department of Planning Department of Public Works 5201 Ruffin Rd. San Diego. CA 92123 RE: T.M. 4603 - Proposed ll-Lot Subdivision SUBJECT: Sump Study II. Purpose of StudY At the request of our clients, Mr. and Mrs. Leudtke, we have prepared this hydrology study to address the Sump Study requirement for their proposed 11 lot subdivision as listed in the County of San Diego Planning Report issued June 2, 1986, for T.M. 4603. The purpose of this study is to determine the possibility of site inundation by runoff from a 100 year frequency storm. II. Area/Site Description The proposed subdivision is in the Southerly portion of a natural coastal sump located in the Cardiff/Encinitas area. The sump is generally bounded by Summit Avenue, Cardiff, and San Dieguito and Cornish Drives, Encinitas, on its Westerly side; by Rubenstein Avenue, Cardiff, and Devonshire Road and Arden Drive, Encinitas, on its Easterly side; and East '0' Street, Encinitas on its North side (Reference Appendix Dl. The sump is. comprised of two sub-basins. The sub-basins are separated by Summit Place and Rubenstein Place, CuI-de Sac roads located on an East-West saddle located approximately 490 feet Southerly of Santa Fe Drive. The Southerly sub- basin, {area = 38 acres fl, in which the subject property is located, lies at a higher elevation than the Northerly sub- basin, (area = 115 acres z). The general drainage pattern for the sump area is for both sub-basins to fill during a storm, with the Southerly sub-basin topping off first, (W.S. elevation = 144 fl; and spilling over the East-West saddle into the Northerly sub-basin. The Northerly sub-basin continues to fill and spills out the North end of the sub- basin. at D Street, Encinitas, (W.S. elevation = 137 i). (Reference Appendix D & G.). 224 Birmingham Drive . Page 3 Cardiff.by.the.Sea, California 92007. . (619) 753.1453 . ,. '-.0' '-." .' ~ I j 1 j \ . . The subject site lies in the Southerly half of the South sub-basin. The site. approximately 3 acres in area. fronts on Rubenstein Avenue, elevation 180 i. and slopes Westerly to the centerline/flowline of the sub-basin. elevation 146 t. The sump flowline is located approximately 70 feet Easterly of the West property line. The low point of the project site is located along the North property line. approximately 75 feet Westerly of the Northwest corner. elevation 145.2. (Reference Appendix E). IV. General Approach of Study J 1 I j I The general approach of our study was to determine the theoretical level of ponded water in the Southerly sub-basin. considering both post-development conditions in the sump and to determine minimum finish floor elevations for the proposed development of the subject property. V. Analysis , ;~ A 20-scale aerial topographic map of the Southerly sub- basin was prepared using a contour interval of one foot. with an accuracy of z 0.5 feet vertical. The topographic ground control was tied into a County of San Diego bench mark. A boundary survey for the subject property has been completed, and the project boundary as plotted on the 20 scale topographic map has an accuracy of t 0.5 feet horizontal (Reference Appendix E). Review of this topographic map shows the low point of the saddle separating the North and South sub-basin to be elevation 144.1. This low point lies along the centerline of Summit Place. a 20-foot wide A.C. road. The following conditions for the Southerly sub-basin were assumed for our analysiS: i) The sub-basin is filled to capacity with storm runoff. ; 1 , i . , i ! ii) A peak storm inflow condition exists. causing overflow of the South sub-basin into the North sub- basin. ~ It was found that the flow over the pavement of Summit Place controlled the water surface elevation in the Southerly sub-basin. The water surface was found to be at elevation 144.6 (Reference Appendix H). The drainage area contributing to the storm runoff through the site was calculated to be 12 acres, t. with a 100 year frequency Q of 24 cfs (Reference Appendix D & H). In Page 4 ....... 1 I 1 :1 , , ! :; ~ i .~ J order to maximize the useable area for the proposed development, we have included a design for the channelization and realignment of the existing on-site flow channel (Reference Appendix D & F). VI. ConclusionlRecommendations . J , The line of inundation from a100-year frequency storm in the Southerly sub-basin was found not to impact the proposed development site. Due to the close proximity of this theoretical line of inundation and the proposed project site, it is our recommendation that all bUilding pad elevations for the project be a minimum elevation of 146.60, and that any building pads located along the West property line be a minimum of 1.0 feet above the water surface in the proposed channel along the pad frontage. - .j .j " l If you have any questions regarding this study, please do not hesitate to contact our office. ! .j ~ ; ~ Michael Pasko Conway & Assoc., Inc. (619) 753-1453 J ~ , 1 '1 ~ , ~l oj i , 1 ., . I , , 1 I , 1 I Page 5 . ! ') CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General/Engineering Contractors APPENDIX A References 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 6/34 , . (619) 753-1453 1 1 l j 1 , , , .~ i , , j ., . 1 1 , ., ! 1 ) 2 ) .. 7/34 ~ ).:.. .,-~ t... -.- .' REFERENCES "Rainfall Depth-Duration-Frequence for California", State of California, Department of Water Resources, Division of Planning; Goodridge, James D.; February, 1981, revised November. 1982. "Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages"; U.S. Department of Commerce, National Technical Information Service, PB- 276-477; Hansen, E. Marshall; September, 1977. -" 'I ~ 8/34 ~ I CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers 5U1veyors General/Engineering Contractors J , APPENDIX B Vicinity Map 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 . (619) 753-1453 9/34 /"- .1 CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General / Engineering Contractors . }1()f)~LlGHT STATE BEACH \/ i I SITE -N- I ~. ~, >. ~ .. . ~. .. .. > g '..~---..; ..C." .s 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 (619) 753-1453 . ~ 10/34 CONWAY & ASSOCIATES, Inc. Civil/Structural Engineers Surveyors General / Engineering Contractors . APPENDIX C Aerial Photograph of Site 224 Birmingham Drive . Cardiff-by-the-Sea. California 92007 . (619) 753-1453 . 0~f:ii~Ml~F t.,c 3 11/34 12/34 . CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General/Engineering Contractors .' APPENDIX D 200 Scale Ortho-topo of Sump Area 224 Birmingham Drive . Cardiff-by.the-Sea. California 92007 . (619) 753-1453 r, 13 /34 . CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General / Engineering Contractors APPENDIX E 20 Scale topographic Map of Site 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 . (619) 753-1453 ~, ) 14!34 > CONWAY & ASSOCIATES, Inc. Civil! Structural Engineers Surveyors General! Engineering Contractors APPENDIX F Design Rainfall Data 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 . (619) 753-1453 .. '::;)W~t~::1~,.+;th'~::::i:~~:.' ~'r. " .~~. - '-1.. .. '~"" . I. v. 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" "- . - ;- ~ :(;: ~ ':,i Q 0 !o-- z,)l 0: < " < U;:i:' 0.. 7,:... :.oJ .: 0 0 0.;0,;. t""'\ ". vi 0 U '.J7. ~<~ "" ~ ~ .... ~ Q :> .. - oJ <~':~~~i-_::::;'f~ ~-r~:~'2:;"~) -~.": ,~:~~~,) :.;':.;.; -:-:'. ---.-------- .- 'Jfevi'sed -i/sf nO " - AP'PE.'lOIX XI~H ,";.<;:.-......~-,. ~. ,:.:..,,--~.- '>. :..,':'";~"'<':"'; -~:" . ( .J , . ,'..'. -,:,;-. .<.., , .-..>...... :.:.." "......- ,.' , , . ~ - , '" , ~ c::: 0 :;:, '" - 0 ~ - - c:::.r. , !- c.o - c:::: &-:.. 00:::: - LI..I 0 (..j >- ""' I..l.J I ~.:: 0 <= 0- ..... -c:. -... ...... o -- -- I ~':) ~ c::;: w.J >- I Co::) o 'I"'- ~ , tb % o .... I- 0< C>!:; ....- ....- c;:;l "'.......J <00 U> c: ....1-1- CZZ .... 0 >~u t:;cx:c -<CO =><>'0 c.......J uc.... ( '"' \ = ...... ~ 1.1.. 0 cr. ...J c::: - :::- :;:, . . r-- - C- O en - - '" .. CJ :> .. .. " .. !:! z;: 0< -.. ~" We i u ~ z 0: z 0 ~ ;i;: :;0< :;: < z d~> u ..c ... tr.. l>l g A 0 ~ 0 ". 1II::c " - =::::: o ""' u z < '" '^ ..:: - CO y __~ ~~.l__ . '^ .1. ~ fti ~ = .. _ < la. A. ~ 00 0: z .. < < CJ c.. ~ ~ w ~ c.. Q<o '" . u = U> 0 CJ :i ~ % < < z" 0= -" ..... < - ,,0 :> ... " .. < u .. .. " o ""' - ~ - c ..... '^ 4" . ..... ..... Revised 1/85 APPENDIX XI-! -I : 1------ ;"1 . -:Ij ~ ~ I -~ ~ ~ " .. .;1 - -------- "j-'- -_.- " , '1-- ~- --. " !~ --..------.- ~ l ~ l ~ h____ ~-- 'I j -J -- - - -- 'j ,I ___u --- - I 1--- -_...~--.- J t--- - 1----- - - ! 1 --- d_ , r-------- i j------ f.---..--- . I I-- I l-~- ----- I ) .,)-- . ., i .....-- , I; - ----- , , ,r- i _! . : 33/34 -- . - 'PR'C'POSGO - ('~ ^ I' L',--,:' S"It,--"'rf U='?-M: 7-3/~6c.. (' JJ"r'-I"'''''- ~s {c, rJ . _Lj;.:JIc-ALeWA~o ~_,p~~_:___, _ fL~ /^,-" : -jd , . . ~~ ~- 24 cr:~---m~===~-_==--=1 ~-----~---= I-~=-=====-====- '"' -, C.';c'~7~"':".....Ll " (?~.P.L& c}/~'" S<-Cfc ____________ ____________________ _ __~__ ___h____ __ ____ __ _______ '. , I I _ ___Lt=,.j(;7" _<;-]= _;:!v.J__=__? '7~_-I-CJ5-._..:..3!3o._ __ L=J1?_____ _____ _______ _ _ _____ _ ___ __n.s'-or~_ = ...?~_YL_ _=_..!!3/B,3D :..!u:P'4-7____________________ ______ :r';;I_'"F-;~~ ~ -Scv/.{ -d ~C.4 I__~ ../I!o/' ~~:;~:~~f--~~~~-~ ~~. - - --------------- (to SiN t (!C'''''''~~ ___d "-_ 0, -1.~_______ _______________ ~ ___ __ __ ------T: ii3t.-----(- dB -f3--:li2.----------------~-- ---- :_u ----------- 24=--o.../t- cf::IB) 2d-tE_J".C)C:"t;J ___(T/i:-nH_!-'i!;',.~O"_d~"'il'''') _ _ ___ ___ jRt 3::.1&'_/ --t/=- ;z4.4 _o/.S___$_________________ I _______...__________ .' I '...J-, :;; -;I/e, (y Ai lor tL . __~_.._____n._ ______..__..____ __ __ _______ ___ b~ l : -5:~ (c:.,q,~4.1J ~_!.!_J_'___jL:.~.C_9 t..c~ ,-u ,41 ~_________ -.r IS - /8' -,., - 24 ' /1:--- _ .:.....---)'---f..-~_ -- .,.."f<;-- u.<. ---_,/____,_____..__..___________________________ ________h_______________ yL/q&)vJ.Tj _ - 7.-,,<;;:-) , - . .._______A_€C"--_.-f'__'..~.~.?__=__iJ~ I~___ _,J_~_ ~-'-~6_+_.9_ __ ______u_____ --2~$ L~-.--o/-~-~g,J-'cr__$- -= 0.'58' 0.75' - - - '/ I --.;,-- ~!.. 2 (oJ h) ~ 'r fC________s_____ _____ t)ff..l,,_ ='2; (.m47) =O.1o'-___'L-.......t2..2.~!:..q..:j...:. ffl.r P=:.A~J,~'_+_!t...:....z.cJ. ...3 ~s __ ____ _____.::.-!:./o' .~ ._' i , - ~ .. , - - ~ C!..vl4N,...,''- . 7:J~, I",,,; , .. , __&..1r.L I rz...hJ I, r 'it ~ -- --~~-_. -'- , .J.e.( _13_'-."$,.?- S" . -r-6( , , l-- . , A .~.., (1? t. @ NN l,." ....-- .- I ~ .j ~ - ---- ~~_._-- .- -- ----.--. -.--.-- ~" 8. 2,<;; I .p '; = .--.-- -. . .. I -/-- , -. i - -- ~-'--' - -- -- ---.-- .~ i -.----- ._- - ---_._~~--------_._- ~~ 1'1;';'''''74 . I .~ '" /"" 8. Z. '> .._------ u..._._ ___ .L.______ t - :.'!--. ... -. - _.__.__.~--- - .. :J V(:-1 C C In" _.r.,: _rl.t:w i --- --- . J ___u_ n__ - - ------ ~ Lft<F .: . ------- .' ---"--+ " ,. .~ .-. .. ---. --.---- _u.....__u . . ., 1 .. . ._- ---- --. . ------ _._-_.. - ,-------.--- ~ , ----- - - . ..--.--.. -- " , , ': -- --_. ---. .. .- - .- .-. .. . - ..._- :1 1_. . . - ---- . ..----- ------ .---..--. I .- .- , , i' . 1 .~. ".1 . ," :34/34 1-~':J.1--7.-Pf 2- t!>t,-001 ~ 8-/-8& C0"'lL) _..,t).EL..~_J 7~~{2.1sYo.r..'?J.17)~.!!::;. _",,-. /.O>'!_d.~.j_1-S' _~.e_5',-~~~_"~_ __.___ _. 6Ei..L.,,- 295 (0. co4 7) :J4,O ______.d:.. Uo '<"-.1..'.. J..!'!~___. =ZH '::~'11LfL... .:::_________. _.__ _ _.._~---- ----- -.- ---.- --. fCK~....lt'-1>In .-At M(.~-'--;J ;~r~-Il- V'. 24',~-,'- /(;.~j(/,8) ~ _..f. 3c.-r.s <.. (.. ; GI2.4SS_ L,..,,,,, 0.<<: f;r.l:;:-C-L-,,- D/H'P"',-:>": -1't:7!... j.1OD/f/F-:. / ') ,,'r- I) 1) - 40 @ t!."",-..k.J.,..f..- 0"'1< e - __ T .1 ; I i 1 , ~.- ------ I I 1--,- I i , 1----- ,I ! I' ).: 4- .. I', 1': I:. ~ i i. , . , 1 1 , .. . .l ESTHlATE FOR I~IPil.O\'EMENT ,. . '-.. TII , -4f&,Cn Grading Permit , S.U.P. , Rezone , e.G. , ~..- , Engineer: STD UNIT DWG ITEM QUANTITY UNIT PRICE COST SURFACE HIPROVEMENTS . Grading (if no nadinl! Plan C.Y. IG-l Curbs & Gutter L.F. . iG-2 Curbs & Gutter 2"1 '7 ~' Z3q? L.F. /1,&0 "1;---:!:.. -=<; Z:?~I- !G-3 Monolithic Curb, Gutter Sidewalk L.F iG-4 Curb and Gutter-Rolled L.F. IG-S A.C. Dike L~ '38 L.F. 7' 0 ~ z,4 :G-7 Sidewalk ':, ,f~' 70~ t. S.F. 2.70 . 1'-' .: .~ 1"f.:)5. :G-B Sidewalk Ramo ..a- '2 Ea Ct: cc; ----..:...::..- IZ pc G-l2 P.C.C. Cross Gutter S.F. JG- 13 Mid-Block Cross Gutter S.F. !G-14 Concrete Dri vew ays 'Nt:LUOED ,,.,) 'S'#DLw.Ai.C S.F. G-17 Alley Apron S.F. G-21 Concrete Pavement (Alley) S.F. G-22 Cut-off Wall (Pavement) Ea 'G-23 Cut-off Ivall (Alley) Ea E-l Streel: Lightfs) HPS lOOw Ea E-l Street Light (s) HPS 2S0w Ea DS- 13 Street Name Sign Ea A.C. Pavemenl: 'J. "A.C. over ID " Base U:..~ ' 30.078 S.F. J.'f'S' .' . S81.~ , "A.C. over " Base S.F. "A.C. over " Base S.F. Other (Specify) -PS-7 A,~, D'K,'/tWI1Y IN':'. -N AL Subtot al Surface Improvements , " DRAINAGE SYST~\~ /04, 1'1..f. D-l Curb Inlet Type A L- Ea L= Ea L= Ea D-2 Curb Inlel: Type B I . L= Ea i L= Ea L= Ea D-3 Curb Inlet Type C L= 4' -f- Z Ea ":Z5CO I - -; , 7= L- Ea L= Ea :D-4 Curb Inlet Type D Ea ID-6 Curb Inlet Type E Ea ID-7 Catch Basin Type F Ea '. . j, 1 " r I , . , i I " . -, ) ESTIMATE FOR I~IPROVEMEN1 . '.' i. . >:r0 UNIT ' . OUANTITY ..:.... . l'iG ITEM UNIT PRICE ,.. '; COST " . , 0-8 Catch Basin Type G Ea " , Single Ea Double Ea Triple Ea [0-9 Storm Drain Cleanout (A) Ea 0-10 Storm Drain Cleanout (B) Ea 0-16 CSP Inlets Ea . 0-18 Slotted CSP Drains 12" Dia L.F. 18" Dia L.F. 24" Dia L.F. D-22 A.C. Soillway S.F. 0-25 Curb Outlet Type A -?'- I Ea 2 ,.cD ~2,OO 10-26 Curb Outlet Type B Ea -:;c:; D-27 Sidewalk Underdrain Ea 0-30 'Straight Headwa 11 (A) Dia Pipe (Single) Ea Dia Pioe (Single) Ea Dia Pipe (Sinr.le) Ea Dia Pipe (Single) Ea Oia Pipe (Single) Ea , . Oia Pipe (Double) Ea Dia Pipe (Double) Ea Dia Pipe (Double) Ea [j:..32 Straight Headwall (B) Dia Pipe (Single) Ea Dia Pipe (Single) Ea Dia Pipe (SinQ'le) Ea Dia Pipe (Double) Ea Dia Pipe (Double) Ea Dia Pipe (Double) Ea 10- 34 Wing Type Headwalls . & 35 Dia Pipe (SinQ'le) Ea Dia Pipe (Single) Ea Dia Pipe (SinQ'le) Ea I Dia Pipe (Double) Ea , Dia Pipe (Double} Ea , , D-34 U-Type Headwalls . & 35 Dia Pipe (Single) Ea I, ,. " . Dia Pipe (Single) Ea i , ,. Dia Pipe (Single) Ea . .. . Dia Pipe (Double) Ea Dia Pipe (Double) Ea D-36 L Type Headwalls " " & 37 Dia Pipe Ea ! ' Dia Pine Ea . . Dia Pipe Ea , Dia Pipe Ea ',' -38 Curtain Wall Dia Pipe Ea . Dia Pipe Ea I Dia Pipe Ea [)- 39 Inlet Apron Dia Pipe Ea Dia Pipe Ea Oia Pipe Ea ~ J I "" . . .' EsrnlATE FOR IMPROVEl-IEl'o. j . . I , I. i , " "- UNIT . STD lllVG ITEM QUANTITY UNIT PRICE COST , 0-40 Rip Rap Na2Backinl! C.Y. Ton C.Y. - Ton C.Y. 0-41 Concrete Energy Diss ip. 42 Dia Pipe E::l & 43 Dia Pipe Ea Dia !'ipe Ea Dia Pipe Ea 0-44 Warned Wingwalls C.Y. I Culverts Dia L.F. : Dia L.F. Dia L.F. Dia L.F. Dia L.F. Dia L.F. Other (Specify) I I I I I 1 I Subtotal Drainage .. '7t)()O .fISCELLANEOUS - w-l Masonry Retaining Wall S.F. C-2 ~Iasonry Retaininl! Wall S.F. C-3 Masonry Retaining Wall . S.F. IC-4 Masonry Retaininl! Wall S.F. 'C-S ~lasonry Retaininl! Wall S.F. C-6 Masonry Retaining Wall S.F. "-9 Gravity Retaininl! Wall. C.Y. -11 Reinf. Cone. Retain. Wall C.Y. C-12 Re1nf. Cone. Retain. Wall C.Y. N-6 Chain Link Fence. L.F. ~\l- 8 ~letal Beam Guard Rail L.F. 1-9 Guard Post Ea M-IO Street Survey Monu. Ea Other (Soecify) . Subtotal Miscellaneous WATER ITENS (Submit Approved Estimate FROM Water District if a Joint Bond) p./ FlY!; I--I~;K,-r, A $r"'~t" I ~... ~c;O ~D~D f.Z /""';1>,,,,, "aI';<r,<. II t:.A- 410 S' 3 90 P.4 2' .5',0. I c;.".: &/c ~.IIJ p./o I" ;'vI..A J. ?.. i=.rJ /1"70 23(C ..'In ('''7': V,ALo.IE" . . . I [,,1"1. 740 1.:i.C 8",PPC. IV!!' 7/8 L.r. '2.0 14- -, [p,;) I ,. I i I i I. , . /. i 1 lou L' 1 1 , , . 1 1 ' " " "J ESTI~IATE FOR I~IPROVEl-IE . STD - UNIT -.. DWG 'ITEM OUANTITY UNIT PRICE COST , WATER ITEr-IS Con I t Subtotal Water ?5430 SEWER ITB1S (Submit Approved Es tirnate frO~l Sewer Dis tri ct if a Joint' Bond) Sewer Main L.F. ~/:c Sewer Main /::/D L.F. '2-2. 17.3'2c Sewer ~Iain L.F. S-t> Sewer Lateral /3 I./D ~ 713: S-17 Manhole ~ 5 Ea 1 <;"'.D ~. 76.0 S-2 ~Ianhole Ea S-3 Sewer Main Cleanout ~ Ea .4'. --....:- S-6 Concrete Cradle Ea S-7 . Concrete Enc:LSement C.Y. S-9 Concrete Anchor Ea SolO Cut-off Wall Ea S-5 Crusned Rock Bedding C.Y. , Other (Soecify) Subtotal Sewer - - I ',:;1' - -::'-::',3$0 SU~IMARY SHEET A. Instrument of Credit for Erosion Control (if applicable) 1. Public Storm Drain System (From Improv, Estimate) 2. Private Storm Drain System (From Grading Estimate) 3. Landscaping (From Grading Estimate) 4. Irrigation System (Prom Grading Estimate) 5. Mi~cellancous Items (From Grading Estimate) -G- ., 51, '3/1 Subtotal Contingencies 10% TOTAL .er .e- Go- :: - . ~-, 5-1 ?J1 ,..n' 5hl ,'- 'C.,. S'7,7~ B. Subdivision Improvement Bond , 1. Surface Improvements 2. Public Storm Drain System (if included above enter 0) 3. Miscellaneous (From Improvement Estimate) /tj,4",at,. j~l,i e -& Subtotal Contingencies TOTAL 16 of, "/'14 10% 10 '5~a //5.4<'14 /1:....:.. ., 0/4., '~~I-: ',~ ., '-J.::: C. Sewer Bond 1. Sewer (From Improv. Est. or Sewer District) 2. Contingencies (10%) (If Joint Bond enter 0) TOTAL -z. 1 '31-D Z l '.,1 3:' ,~fl 33.~5 ?~~5 %,';'8S ~....... .....'10"...... . ....... ..... ...... ................ . " .. . ,;.... .... , Summary Sheet D. I~ater Band 1. Water (Fram Imprav. Est. ar Water District) 2. Cantingencies (10%) (If Jaint Band enter a) TOTAL E. Inspectian Depasit equals 5% af first 100,000 + 3% af remainder far the faliawing ite~s: 1. Erasian Cantral Tatal (if applicable) 2. Imprave~ent Band Tatal 3. Sewer Band Tatal (If Caunty Sewer District) Amaunt to. be used to. campute Inspectian Depasit F. G. H. , , .I ., .i i i , ! Inspectian Depasit Subtatal Less Inspectian Depasit far starm drains taken with Grading Permit Inspectian Depasit TOTAL Soil 1. 2. 3. 4. & Lab Inspectian Depasit equals 2~% af the fallawing items: Impravement Band Tatal Public Starm Drain System (if nat included in E-l) Sewer Band Tatal Water Band Tatal Tatal to. Estimate Lab Depasit Sail and Lab Depasit Security Summary 1. Instrument af Credit far Erasi.an Cantral 2. Subdivisian Impravement Band 3. Sewer Band 4. Water Band 5. Grading Band (Fram Grading Estimate). I~';:':J.',! - N c; Depasit Swnmary 1. Erasian Cantral 2. Grading Security (Fram Grading Estimate) 3. Inspectian Depasit a. Subdivisian Impravements b. Grading Permit (Fram Grading Estimate) 4. Sail & Lab Inspectian Depasit 254'30 2. :5"4 "3 2. '7 '17'3 0 ;/5, -I"i'.f II -- 3t..,~8S ~~ 2 . " 15?,/7'1 tJ:~37C,- t.!5~ S .:.--t' . , . 2,'S;;; z. ~' ,,... c."'...... . .f6/3 ..- - , . l15.111 -+-Ie:' . ?/ - " "3<'..,':'85 Zi,'il3 /RO, /5Z. ,('50-'1 '4~ //~ -t'T-t ~c:.., '-85 ..7. <;7 ~ /In. 7':'5 ., - . ,- ,-t.: /:...7. :::: . Z87, 1/'i 5,000.00 Ie. t. ~ -rc.~ -'10/3 3Q'f(" -15M Pc:pos;, 2. - ;: (,. .-:-:..-:~ -~~- , ~ ',-::;~ - - :l ~4,ISI c . ~[, ,*,.' . . - ~ [,~"",~,,-,,>,","_.," ,,'" ,',".', I ,,",-,_.,'!!;~r:-"''''f:".' '~'. . ;,o-.~"- -.. ',' . 'c<.(J,.", '," ~.,~tl...",.,$'W"/~'" t '>lli" , /"',""" ,':,"YF,:.t\';~t;--rY:;",'~:" ,!~",,:~~:ji "':":...';';"';?"~~-""'; ... :;d,.-.b~': IJr-~'.nL~'l.~";"'f<~~ - -:^: F~.~~.~~:~;)~';~;.~:~;::~~~:-: ~!G Z ~;3r:~ .::~SE~~,R,SE~V I C':-- 'I~'CT'q '-1 f~",~~J~~W:~i7f,'f: ACT 1:: J Pe~ ~ ~~~ ,ASK J II~c ~s Ie . ,. All, $15 ,0 DoAn PLEASE TYPE DR USE BALL-POINT PEN FOR GOOD COPIES ("11t<Dlr~ \CI1Y) 1 OWNER'S ~AM~ OWNEl\lS ADDRESS 7:;' \ 1/z... I€~ .' 1:o.JU Hi; \5.'N Tl. 1~.iJOCKT; , '1r!.4/G7 ~ 'If ill p~t ""LING/ 42 I, PHONE '" .. _0 -0 -~ . o "'~ '" . -~ _.c o " o , .., -"- . -~ o "- . ~ " qZ 06 7 (ZIP) DISTRICT CASNIER'$ Assessor;, Parcel Humb~tS) (Add extra If necessary) ajor Subdivision In.) !. I ToUl Number Hinor Subdivlsiory (TPH) I + of loU Hejor Use Permit'" (HUP) ()rr...., 11 E Reelasslflcation (Rezone) Cert. of tompl. Boundary\ Adjustment Tlme Extension........Ca'e No. PROJECT DESCRIPTION , 'TYPE (check) ,,''';'. . ~eSident1al ., ':rotal Number of dwe11ing u~iuJl .I- commerclal Gross floor area . IndustrIal trosS floor area ~ Other ~r~ss floor area ", t' I Owner/Applleent egree. ' pey ell nece..ery con.truetlo eo.t., dedleete ell dl.trlet required ee.e..nt. to extend .ervlce to the p jeet, end CO"PLETE ALL CONOITI NS REQUIRED BY TNE OISTRIC1. --------." m~::;:~. fhif.:J~:? ;.; ;..,,;,,}~~~ ~ ~;W7^'" ,,0 a (On completion of ~bove, pr..ent '0 .ewer di.,rict ,0 e.'ebli.h .ervlce evellebili'V. Step 2 below.) I 11\1II_"lR1nmammunmmmll1lnnnll1Ullnmmmmnnnmnmll1l11llnIl1l1lIUmmmll1lmmlll\1l1l1l1l\11l1lllUnRll\l1l1ll1lnmlU""e'..-dI1III~lIllI\I1I1lI_l1II1IInllll1ll1lll1UlI\1IIlII1III1I 2 SERVICE AVAILABILITY :'te: [I }::)"4_/81-- Service Aree' - ;~r .. 0- .. -' ~ ~ u i u -' "- "- .. , if ~ 1 'I. (. .. ~ -' "- .. o U 0- U ;; 0- '" ~ ( '. '. i .. 0- .. -1 -' ~ .. 0 u '....... .... 0- U I .. 0- , ~ , , 0 I ~ \ ! . ;!., ? -~ 83 SZ- j4ZIJ '~()b-(,,,,sr;,1i "0 " o o . ~ . ~ 0- , o ~ -" .r) (;) Z. GO o ~ /("ff$' U:' ,.'- ~ ~ . '" '" \ DISTRICT NAIIE (Cheek one) . ' , ~proJect \s In the dlstric a et igible for serviee. Project I. no' In the dl.trlct. Owner mu.t epplV for anne.etion. $ervlce1i2l'lsCJIS NOT re.,onebly expec'e<! to be evelleble. If cepeclty I. epprove~ the .ubdlvl.lon mep, .ervic~MAYCJAA't NOT be conm1tted at , 0 Project will not be served for ,he foil re.,on!.): , " J' '~, ,'. avallable prior to final that time. 'J. \ NOTE: No conmltll\8nt Is 91ven by 'completion of Step 2. The dl~rlct may complete Step) of the rm at the same time al completing Step 2. o phone: 0t4: ~ 3:J '13 cople.. App Icent: Submit remalnlng.,coP e. wl,h, . 1'-- Ruffin Rd.. Su1te at San of ego , CA 92123. Date this tetter termlnates Amount of .ervlce committed or to be committed for thl. project: EOU'. (Check one or more) . . o ServleeCJISCJIS NOT eu"en,IV eve,lIeble. A condition of the T" or TP" .hell Indlce,e thet .ervlce will be committed. if at all. prior to fln.l approval of the subdivision map. D Service he. been committed pur.uent to e binding .greement .etl.fectOry to thl. dl.trlct: Explretlon dete Is: " -(If "None". .0 indlcete). 8 S,ervlce cepeclty \. committed for thl. project until terminetion dete of thl. letter. Condition. which .hell be ..tl.fled before e .ervice comml,ment cen be binding end beFore a flnel map I. approved are IS follows: .. ", Date: "h' 3 SERVICE -- Authorized Signature: District: On completion of Step Three, Rd.. Suite B. San Diego, CA 92123, and Tttle: Phone: return to County Department of PlannIng and Lind Use. Include addltiona' conditions sheet If necessary. 5201 Ruffin OPL 399S 3/83 " u ~ COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS LIQUID WASTE DIVISION RECEIPT FOR SEWER CAPACITY COMMITMENT C!.M I S ,,4 S ,D. 4 S ,,4 5 73 Ir/l ;,'6 ,'226uWI,;,DG M .-226Q;;hoQ:; .'1. ,:a"isOO.aaCK'lI HIlU66' CIA ADDRESS PHONE I" I q 76 3 -1~ r;j) , ASSESSOR'S ~ (PD - 08/ - ~tal 58 PARCEL NO, .,1h() - /)8 3-.Qa .53 ,/ CASHIER'S USE ONLY TENTATIVE MAP NO, 1m 4t,tJ3 - / TYPE, OF OCCUPANCY NO, of EDU. x CONN, FEE TOTAL CAPACITY FEES #~~~oo,- COMMERCIAL /0 X tfLdJ..1a lJ I - .I JA(i.5knr &:U_ SINGLE FAMILY DWELLING APARTMENT/DUPLEXES INDUSTRIAL SAM Approval attached DYe. 'Qi:;LNO Explain THESE FEES ARE NOT REFUNDABLE This commitment applies to the parcel named and becomes effective on payment of the above fees. It is null and void two (2) years after approval date or on issue of a Wastewater Discharge PermIt. Fees must be paid at time of issue of this receipt. This receipt must be presented for credit at the time of application 'for a Wastewater Diocherge permi~~. , ~/ ~, " IGNATURE OF PPLICANT: I ~ ACCOUNT 9916 ACTIVITY ~ . TASK ABC APPROVAL DATE: ORGANIZATIDN THIS IS NOT A WASTEWATER DISCHARGE PERMIT' WH ITS - Applicant CANARY - Oept of Public Works, liQuid Waste Div PINK - Capt of Public Works, Map Proceuinlil GOLDENAOD - Controller Sr Office. Ca.hi., DPW Form 278 (11-841 I' /. , ~ -~,...-. "\: ~,$fCONWAY & AsSOCIATES, Iue. I- 1 """'; . 1 ..' Civil/Structural Engineers Surveyors General / Engineering Contractors HYDROLOGY STUDY FOR PROPOSED 11 LOT SUBDIVISION , \" :'\ T.M. 4603 \ 1'\ / J\jJ (' -;7l, - \Y~'r./, . , .v -, ~ ~ -~~'1f <1 Q.,J\" c~ ? t' \" r o()\ s~" t: Q., > . ~J' Prepared July 31, 1986 i" 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 . (619) 753-1453 '. 'r ) t,.--' , . , .... INDEX J2~gj;,jon I:.M~ \ I. Purpose of Study................. ... ........3 II. Area/Site Description. ......... ....... ......3 III. General Approach of Study......... ...........4 IV. Method of Analysis.................. . . . . . . . .4 V. Conclusion/Recommendations.. ......... .......5 AP~~@!.K A. References............... . . . . . . . . . . . . . . . . . . . . .6 B. Vicinity Map..................................8 C. Aerial Photograph of Site................ ....10 D. 200-Scale Ortho-topo of Sump Area.. ..... .... .12 E. 20-Scale Topo of South Sub-Basin... ....... ...13 F. Design Rainfall Data........................ .14 G. Sump Storage Capacity Calculations.......... .16 H. Offsite HYdrology/Hydraulics Calculations....22 (3 Sheets) I. Onsite Hydrology/Hydraulics Calculations.....28 (3 Sheets) . , J ,CONWAY & ASSOCIATES, Inc. - , I ,. Civil/Structural Engineers Surveyors General / Engineering Contractors Prepared July 31, 1986 County of San Diego Department of Planning Department of Public Works 5201 Ruffin Rd. San Diego. CA 92123 RE: SUBJECT: T.M. 4603 - Proposed II-Lot Subdivision Sump Study II. Purpose of Study At the request of our clients. Mr. and Mrs. Leudtke, we have prepared this hydrology study to address the Sump Study requirement for their proposed 11 lot subdivision as listed in the County of San Diego Planning Report issued ,rune 2, 1986. for T.M. 4603. The purpose of this study is to determine the possibility of site inundation by runoff from a 100 year frequency storm. II. Area/Site Description The proposed subdivision is in the Southerly portion of a natural coastal sump located in the Cardiff/Encinitas area. The sump is generally bounded by Summit Avenue, Cardiff. and San Dieguito and Cornish Drives, Encinitas, on its Westerly side; by Rubenstein Avenue. Cardiff, and Devonshire Road and Arden Drive. Encinitas. on its Easterly side; and East 'D' Street. Encinitas on its North side (Reference Appendix D). The sump is comprised of two sub-basins. The sub-basins are separated by Summit Place and Rubenstein Place. CuI-de Sac roads located on an East-West saddle located approximately 490 feet Southerly of Santa Fe Drive. The Southerly sub- basin. (area = 38 acres f). in which the subject property is located. lies at a higher elevation than the Northerly sub- basin. (area = 115 acres f). The general drainage pattern for the sump area is for both sub-basins to fill during a storm. with the Southerly sub-basin topping off first, (W.S. elevation = 144 tl; and spilling over the East-West saddle into the Northerly sub-basin. The Northerly sub-basin continues to fill and spills out the North end of the sub- basin. at D Street. Encinitas, (W.S. elevation = 137 ~). (Reference Appendix D & G.). 224 Birmingham Drive . Page 3 Cardiff.by-the.Sea, California 92007 . (619) 753-1453 " , I' . I r The subject site lies in the Southerly half of the South e sub-basin. The site. approximately 3 acres in area. fronts , on Rubenstein Avenue, elevatioI1- 1 liB I, and slopes wes.terlY t9,.-- tlS'-\-' the centerline/flowline of the sub-basin. elevation 146~ ~ The sump flowline is located approximately 70 feet E~sterlY-- _ of the West property line. The low point of. the pl'o,iect site is located along the North property line. approximately 75 feet Westerly of the Northwest corner, elevation 145.2. (Reference Appendix E). IV. , General Approach of Study The general approach of our study was to determine the theoretical level of ponded water in the Southerly sub-basin. considering both post-development conditions in the sump ;.j; and to determine minimum finish floor elevations for the ~ proposed development of the subject property. \....~ ~ . AnalYsis .~~ A 20-scale aerial topographic map of the Southerly sub- 1 ~'~baSin was prepared using a contour interval of one foot. with ,~n accuracy of z 0.5 feet vertical. The topographic ground ~ ~control was tied into a County of San Diego benchmark. A ~ ~~.boundary survey for the subject property has been completed, ~~, and the project boundary as plotted on the 20 scale D ~ ~opographic map has an accuracy of t 0.5 feet horizontal l\v '~Reference Appendix E) _ ~ Review of s topographic map shows the low point of ~: ~the saddle se rating the North and South sub-basin to be .,elevation 4.1. This low point lies along the centerline of ~Summit P ceo a 20-foot wide A.C. road. ~ \) The following conditions for the Southerly sub-basin .~ ~ ~were assumed for our analysis: ~ i) The sub-basin is filled to capacity with storm runoff. , ii) A peak storm inflow condition exists. causing overflow of the South sub-basin into the North sub- basin. > It was found that the flow over the pavement of Summit ~lace controlled the water surface elevation in the Southerly ~ sub-basin. The water surface was found to be at elevation L 144.6 (Reference Appendix H). t The drainage area contributing to the storm runoff through the site was~ ated to be 12 acres, i. with a 100 year frequency Q Of. (R~fer~mce Appendix D & H). In A r--85-' -tc.. 7I0I>1/^- Z, ?" Page 4 -fc =- /2.(~)'Y/h..... .) J: -=-3. ";::'/1-- ~{+:VMh. . q lev 0 Z 4 .-., ,-- r' order to maximize the useable area for the proposed development. we have included a design for the channelization and realignment o~t ~ ~ng on-sie flow channel (Reference Append' & F ~7 ) haw c0e~ "Oes'.r &.WFt.tL' lJa..t f1df C1 sf~ {~ \ ,... '-f~ c..~ ~ 7 'J)esf;V\ 5~ ~ , 6 fw. (!j) f~ The line of inundation from a lOO-year frequency st.orm /OOy~ in the Southerly sub-basin was found not to impact the ~ proposed development site. Due to the close proximity of this theoretical line of inundation and the proposed pro.iect site, it is our recommendation that all bui' ad elevations for the pro.iect be a minimum elevation 0 146.6, nd that any building pa located along the West property l~ e be a minimum .9 eet above th.e wa~r surface in e prop~_ s d 7 channel a onge pad frontage. '( . iO If yoU have any ques ng this study, please do not hesi ontact our office. ~ VI. ConcLus~nlRecommendations fO.J "<;1> l.-@'J~ "" B'" AI C?\..eJ -- 14{.. ,(.., \ Df ""....~ <t.-k1...... l) 10 '1 +1.0' t)8~"/JJL 'r', 'i /;)<>iiSN'r . 7-"5 &1'17'" '....5 ~u..e.'1,;;a !'or< L1St; /.....J DS7F;fW?7,"';I,...Je"; !f'~ ""Ax, Vv, p::>coJDf::TIJ t.-e:v~ /"J 7..Jcr S(,./,....~. 'P T"',; f""'7.J1"'f'- ~"7t-r,Jcc5 ~ r--c .$_" I Rc;~lJUi$S q: ;'\/;:.e>V r""""'T'T'cS I T;I~ .60~~,) .L~"'- N~LJ> /'1"7 "'4JfoJiit'l/1; .".,,,, .t/T.;. I. ./ _ ~ >/7~ - Michael Pasko Conway & Assoc. . (619) 753-1453 s....-p1-1 , [-..-I' ------ ~ -t~ If' f'C vJG$j (t:;c::.\IC~ Inc. W.S. (1-1. LJ zA ht' >f~, N J"" y----~, ~ (litiS PiO'J'D---- P, S~ i\'f&vor<<f l ~ I . ~ -&-~s f~ I .,~. "t ~~ frlJn'V "" T~_/--fo C - ~ ~Y\ ~ .r no=t... (' ccti '/v-. \ Y\ ~ .J. ... C. \ I (OM.. I V . . fJJiJJ i VI. -t !:' u.1o , ~.~, <:r1-W 1;1'; () I'.Nol 7J~/"" , p,Il--;\ v-AS r ~j~fA-l--c... _ I ;.ri7~f"//ie ,,>1&0 r%- ~ _ _;_,j.L ,p,y..) - '1"f .,., --;Air /1./ ."et ( ,_ ~"",,;I' r .7 . .., 1,nU. .::;. : ' ..J~r"GlYV ~~-r;~"'" {)1..Jt, !,vu t-G'l.:n.r ----. r- 6134 ,CONWAY & ASSOCIATES, Inc. Civil / Structural Engineers Surveyors General/Engineering Contractors , APPENDIX A References J.; .t e'\ ,F c;Y eJ 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 . (619) 753-1453 c /- ~ 7/34 REFERENCES , 1) "Rainfall Depth-Duration-Frequence for California", State of California, Department of Water Resources, Division of Planning; Goodridge, James D.; February, 1981, revised November, 1982. 2) "Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages"; U.S. Department of Commerce, National Technical Information Service, PB- 276-477; Hansen, E. Marshall; September, 1977. (~ r CONWAY & ASSOCIATES, Inc. r" I Civil / Structural Engineers Surveyors General / Engineering Contractors 8/34 -' APPENDIX B p ~ d / , ! 224 Birmingham Drive . Cardiff-by-the-Sea, California 92007 (619) 753-1453 . C' t CONWAY & ASSOCIATES, Inc. c 9/34 Civil / Structural Engineers Surveyors General/Engineering Contractors ,~\, ",' ..... I ' -~"'~~~M '~~1 '~'. ~'-4-,.rrr, \ '" , ';',1; '\ ~e"''' t: 'j ~}-Gl'" _ .".. . II n,,:" \ <- ;,~ - ---~ .\_~.;..~o~ j:.'~'Uf'-"II~.~IJT~~,....:; ':l~:' 'f"';';;'l':I~ ..-;.,.....J \'~- '" ,-- i oi-' -' ," :'.':. . 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Revised 1/85 APPENDIX XI- NoText MAP N O .01, a ' WE HEREBY CERTIFY THAT WE ARE THE RECORD OWNERS OF OR SH EET" I OF 4 SHEFFS ARE INTERESTED IN THE LAND SUBDIVIDED BY THIS MAP AND WE CONSENT TO THE PREPARATION AND RECORDATION OF THE MAP. I - WE HEREBY DEDICATE TO THE PUBLIC, A PORTION OF R I, JON �LAF:E, A LICENED LAUD SURVEYOR, HEREBY CERTIFY RUBENSTEIN AVENUE FOR USE AS A STREET AND RELINQUISH AND WAIVE ACCESS RIGHTS FROM LOT 1 IN AND TO RUBENSTEIN T4;A1 T!!E `,' OF THIS Si.;P.DIVISION WAS MADE BY ME OR AVEN E EXCEPT FOR THE NORTHERLY 40 FOOT ACCESS OPENING, ►, }a r Y �; R E C T i S F T r; E E W JULY 1, 1966 A tJ D AUGUST 1, 1 ,86, A� I) S A � ,S IS TR:iE AND COMPLETE AS SHOWN; AI,L AS SHOWN ON SAID MAP. ;�,,,; ,�, ��[ %TS OF THE C�,ARACTER INDICATED HAVE BEEN SET WE HEREBY DEDICATE TO THE CITY OF ENCINITAS THE SEWER OR 0 [1 O- :, I L [ BE SF. T AS ilOT E J P >E LOrr QT THE SJ�DI'�I 014 BOUNDARY Cl) t RS AtJO.1 i�:.'LL SET AIL OTHER EASEMENTS, ALL AS SHOWN ON SAID MAP. BEING A SUBDIVISION OF PORTIONS OF DOTS 17, 18, AND 29• t ?O'UMENTS 01 THE CHARACTER AND AT THE POSITION INDICATED OF RIDGEWAY HEIGHTS ACCORDING TO MAP THEREOF NO. 2163 WE HEREBY DEDICATE TO THE SAN DIEGLtITO WATER DISTRICT FILED IN THE OFFICE OF THE COUNTY RECORDER OF SAN DIEGO BY THE LEGEND ;td !HIS MAP WITHIN 30 DAYS AFTER THE WATER EASEMENTS, ALL AS SHOWN ON SAID MAP. COUNTY, STATE OF CALIFORNIA ON JULY 3, 1929 IN THE CITY COMPLETION OF THE REO'1IRFI) IMPROVEMENTS. AND SUCH OF ENCINITAS, COUNTY OF SAN DIEGO, STATE OF CALIFORNIA. MONUh; ENT S ARE OR WILL BE SUFFICIENT TO ENABLE THE SURVEY TO BE RETRACED. (SEE LEGEND SHEET 3). FOR COMPLETE METES AND BOUNDS DESCRIPTION OF THE RALPH E. LUEDTKE DATE BOUNDARY OF THIS SUBDIVISION, SEE.CERTIFIED TITLE COMPANY DESCRIPTION AND REPORT ON FILE. IN THE OFFICE OF THE CITY ENGINEER. BY----------------------- - - - - -- DATE VA DONA R. LUEDTKE DATE "SUBDIVISION GUARANTEE" FURNISHED BY TRANSAMERICA TITLE JON BLAKE L.S. 4368 INSURANCE COMPANY ORDER NO. 6003950 MY LICENSE EXPIRES . F I, JAMES SENSOR, CITY TREASURER OF THE CITY OF �A °J DIEGUIT0 ,tiA DISTRICT. AN IRRIGATION DISTRICT OF ErJCi +:i F CALIFORNIA. HEREBY CERTIFY THAT w r,, "ALIFCRNIA. PURS "UANT TO A DULY ADOPTED ' THERE ARE NO LiE',S FOR UNPAID TAXES OR UNPAID BOND kES:i_..;TIO'? CE ITS BOARD OF DIRECTORS, HEREBY ACCEPTS THE ISSUES ► +DER AO+� IMPROVEMENT ACTS OR IMPROVEMENT BONG I; t*tE`,' ir, REAL PROPERTY SHOWN AND DESIGNATED ON THIS ACT OF TIE STATE OF CALIFORNIA SHOWING ON THE BOOKS OF ;.? ; ,E,, ;.!E i . FOR DEDICATION TO THE SAN DlEGUITO t = THIS OFFICE. EXCEPT TAXES NOT YET PAYABLE AGAINST THE � " THE PUBLIC PURPOSES SET FORTH IN THE Fi PST `AML RICAN TITLE INSURANCE COMPANY, A CALIFORNIA TRACT OR SUBDIVISION, OR ANY PART THEREOF. AND THE GRANTEE CONSENTS TO THE CORPORATION, AS TRUSTEE UNDER THAT CERTAIN DEED QF TRUST RECORDED APRIL 10, 198E AS FILE /PAGE NO. 86- 139190 OF IN WITNESS THEREOF, I HAVE SET MY HAND THIS ---------- --- I, R08647' A AlARRF/Y, .CITY ENGINEER, CERTIFY THAT - � OFFICIAL RECORDS. s DAY OF ------------ 1987. I HAVE EXAMINED THIS MAP; THAT THE SUBDIVISION IS rA ?J iI ►(} WATER DISTRICT SUBSTANTIALLY THE SAME AS IT APPEARED ON THE TENTATIVE ,I/11'4€5 15"S BY EG- MAP, AND ANY APpROVEtt ALTERATIONS THEREOF; THAT ALL THE -------------------------- C /TY T, °��t5t/RER ,JOSEPH V PALMER_ PROVISIONS OF THE SUBDIVISION MAP ACT AND DIVISION 1 OF BY — BY-------- - - - - -- - -- ?ITLE - C ', BY ` --------------- TITLE 5 OF THE CITY OF ENCINITAS CODE HAVE BEEN COMPLIED L[F, TITLE Y Ur BOARD _ -- WITH; AFJD THAT I AM SATISFIED THAT f+IS MAP IS y` OF i Ki C i BURS DATE TECHNJICALL V CORRECT. - ROAERr.4.WWZE�iV BY -- -------- - - -- -- --- _ COMMUN10, A CALIFORNIA CORPORATION, AS TRUSTEE UNDER C /rr fP:�.E 298 0961 4 DATE E.° -- J_ - - -- - - -- - — THAT - CERTAIN DEED OF TRUST RECORDED DECEMBER 2. 1987 AS FILE /PAGE NO. 87- 666688. ` BY BY - - -- - TITLE �`— - - -- TITLE ► I, PATRICK MURPHY, SFCRETART OF THE PLANNING COMMISSION ` WE COUNTY TREASURER -TAX COLLECTOR OF THE COUNTY OF SAN OF THE CITY OF ENCINITAS, STATE OF CALIFORNIA, HEREBY DIEGO, STATE OF CALIFORNIA AND DIRECTOR. DEPARTMENT OF CERTIFY THAT THE PLANNING COMMISSION OF SAID CITY HAS _ PUBLIC WORKS OF SAID COUNTY HEREBY CERTIFY THAT THERE APPROVED THIS MAP AND HAS AGCEPTED ON BEHALF OF THE { THE SIGNATURES OF THE FOLLOWING HOLDERS Of THE EASEMENTS ARE NO UNPAID SPECIAL ASSESSMENTS OR BONDS WHICH MAY BE PUBLIC SUBJECT TO IMPROVEMENT, A PORTION OF RUBENSTEIN INDICATED HAVE BEEN OMITTED UNDER THE PROVISIONS OF PAID IN FULL. SHOWN BY THE BOOKS OF OUR OFFICES. AGAINST AVENUE FOR USE AS A STREET AND THE ABUTTER'S RIGHT OF INDICATED 66435 SUBSECTION ED UNDER i OF THE SUBDIVISION THE TRACT OR SUBDIVISION, OR ANY PART THEREOF SHOWN ON ACCESS APPURTENANT TO LOT 1 IN AND TO RUBENSTEIN AVENUE ' MAP ACT. THEIR INTERESTS ARE SUCH THAT THEY CANNOT THE ANNEXED MAP AND DESCRIBED IN THE CAPTION THEREOF. EXCEPT FOR THE NORTHERLY 40 FOOT ACCESS OPENING -AS RIPEN INTO A FEE TITLE AND SAID SIGNATURES ARE NOT RELINQUISHED AND - WAIVED ON SAID - MAP AND HAS ACCEPTED ON REQUIRED BY THE GOVERNING BODY: BEHALF _OF THE CITY THE SEWER EASEMENTS, ALL A�BHOWN ON SAID MAP. SAN DIE GAS AND ELECTRIC COMPANY PER EASEMENT EzECCR[� D [�cCLt•1BER 26, 1916 BOOK 723, PAGE 317 OF PAUL BOLAND BY IN WITNESS WHEREOF SAID PLANNING COMMISSION OF THIS CITY O�FI i L RECORDS. COUNTY L AEASII RER— DEPUTY --- -��- -- ~— _ —� OF-- ENCINITAS HAS CAUSED THESE PRESENTS TO—BE EXECUTED BY TAX COLLECTOR DATE THE SECRETARY THIS DAY OF 1981. _ ?` r',U GAS AND ELECTRIC COMPANY PER EASEMENT I VERA L. i_YLE, PE CORDER OF THE COUNTY OF SAN DIEGO =: ! �JBER 21, 1945 IN BOOK 1966, PAGE 225 OF GRANVILLE M. BOWMAN BY ____ - HEREBY CEFTiFY THAT i HAVE ACCEPTED FOR RECORDATION THIS zC:ii { J. DIRECTOR, DEPARTMENT OF FOR DIRECTOR PATRICK M1 HPAY BY -- t✓AP FILED F.T THE REQUEST OF JON BLAKE THIS DAY PUBLIC 1. fi: K S DATE _ -_ - -- -- SECRETARY , CLOC OF 1987. AT 0 K, F1: DER SEWER EASEMECNT RECORDED JUNE 21, - -" - - -- - -- - - -- - -- - -- ` :[ NO. 85- 222585 OF OFFI VERA L. LYLE _ COUNTY RECORDER BY DATE -------- - - - - -- FEE • --------------- _ - CONWAY &INC. GRAD /N6 PLAN L /OSIo ASSOC, ' CAL. cOO RD. 3 14 - I ev 7 7 C Ot��dTY T.M. 460 3 (6 19) 73 -14 3�4= :�$3 - , NO , - - - - - - - - - - - - - - - - - - - -------------- CITY OF ENCINITAS TR C NOo 603 _ yHar 2 0r 4 OH�� r* A ., ' j .. _ :>_ _. _.....� ')F ,AL IFGhN'A' T Y OF .SAN i EGO a I : }.:`:.�:..: `_II �;f:�::�r:� r, r SUVEYOR NOTE FOR SHEET 3 N %ErORE ME:. T'IF: iNUFKSItaiJEU H Jt7Af: L. vi'Pr`. �L. AI ' , _' :�, "ATE. A1'I✓'I•:i R RALPH E . LUEDTKE AND VA DONA R. LUEDTKE . : hUV1j:la . 0 `lll :'N _11E R: : 1;D 10 Mi (_:N '} ' . >A I ::/ F h ' NF mil ( .:AMEa •i'.N;':, 'i. �•'' 1,. "I lrl H. i.i 'a71'.I! tlA, r. . . =, i "� ; . '4 ;' - i` I HAVE ACCEPTED !MONUMENTS SET ON PM 12691, AS AMENDED BY R. CeL. —WEST MORTG E CO., A CALIFORNIA CORPORATION OF S. 9965, TO ESTABLISH THE NORTH BOUNDARY Of' THE PROPERTY w i ::'yl.. `.Y ; Ju ytil +: ;'': i': r ;, :� 1, . ''_•:if''JKA1' f 3AT F.XEC`J'TE1, : ilE W I hUMia;N'I �:: BEING SUBDIVIDED HEREON. IT IS OBVIOUS THAT THIS LINE IS. ;E' AND 1✓kUVF: J : I , I'( :> ME Cs ?3 THE B S tjF - �A1ISFACTORY IMPROPERLY LOCATED BECAUSE P.M. 12691. AS AMEN'sF:D BY R. OF S. MY ':;;I': i td X't'Illli ?`IiI>F.;�it,E Tf% ) E `:HF. RSONS WHO ECUTED ;'EIE SAME ON I'EHALF '?F 9985, PROPORTIONED THRU A POSITION FOR AN ORIGINAL MONNENT, '' ':i:+I,:i akAT_r )N, AN. A� KNCi ixaED '1'13 Mr. THAT :'AID i c- .'A WHICH WAS SHOWN ON P.M. 1694. IT IS MY OF INIr N THAT THE )IRPORATION EXECUTF.I) T ME AS TRUSTEE PURSUANT To I T3 DIFFERENCE IS SMALL AND THE COST OF THE EFFORfi i E TO C•Y: A !I: A },!�:. (;Li ? t' I (TART • , F 'ai hFCTC >R ' . AMEND P. M. 12691 A SECOND TIME TO ELIMINATE AttO: fIEI? OVERLAP WOULD EXCEED THE VALUE OF THE LAND. { � 'MM TA A E ! s, ;J141 Lh::= .I tNla:i%. n .. . A " 1 1 , PHARELI , :% (. +t4 :'HE BA :' ,,E:' EV °: ' „� , Y OF :�AIJ L EGO .�tj _ t`i %E• I)F _'r. .:iE;: ",rt►.tm aw - .7 t!rJLs ^iii? .'A:;I 'F 7 E 'THE l ;_ I;E, ` +_HE (1rr „ �I <�lJh;.�. A A CALIFORNIA CORPOR TItJt�, LLK. CORPORA TIM `f'A'T'F: °?`t hRSONALL,Y Arl ;r 4• i �+ ;, f, Tr'.I': JOSEPH V PALMER LL.<l: L: + >Ah:a OF DIRECTORS. I'ft( :)VE +:I' ' ME (.1N 1 i .. _ .. i ;h 7 r. �; HF Atil I t 'i'' _ A "i 1 t•FA:' P_,hY P :. a Nr To I t N WE , 1.. I;, J F. I !♦. THE 1- f!,;1..: �, I . • 'I , t �..iiA1 I � •I'I'k :?i� a.!; 'S( :a td:: WH :' E:XE(: EI ) ", H?, al H ;;d �L r _ 1 •`.'I' :•' f1F, ; 'd:' '11" t1EN'I '} BE!i' Le (()F 1"HE SAN i +i Ii ,1 _ WATER - -, AT1' \RI :.' �W L i`.i.'a:}.1' .''_ ! },'� .•A �'. •i )F'I Y.a , •.+,,,r m n -; r I; A 1' tJ : I , n.. AtJ la A'_ KNOW' EDGED T {_1 "F THAT , HE S AN D I r:'::U I : r3 W,4T'Ek ; XE :" "r :�; :':IE _ =ArIE: A:_ ;'Lal'ti'i'i?t': ��t� _:��1A,t� �: T:: :'Y�.i,W. ��1� t. P1 CT FXEI'TTT ;��P :T. Ai1I'yF'S MY HAND AND (_ )F'FI�'IAL ;_.EAL. Ni ,1•iL:�:- t`�i' fAr,L+ yiJ_' 1i''t'' _.i, KAi, "Y '; ;Iv't�} I SS I ()t1 F.XF' I R.E. .',- ,,��,. i _ ;fir' H. ' Y. � -, ttI•,: - - :'_1IsLi _ "d AIJI+ F;JR ._.:is :r is N: i' i. E _'!- L': �N A:'�I% 1, 1'. ._Ai: 1+; L+ 1' ^;!✓' •_lti THE BAS i :; OF AN 11 ilP- .11• .r FIRST AMERICAN TITLE INSURANCE COMPANY, A CALIFORNIA T. CORPORATION, !'HE t'i :sRPOhA .''_ >ti ° fit: 1 r..: ` 'i1'1'f�:i.- iNS' :rJ *_j' I'% AS :'i USTEE AND iROVLU TO "F: ON THE BA6IU OF SAT I :' A(.:T')RY` EVIDENCE TO BE THE E'u R::JGtNS WHO EXFCU T ED THE .-SAME ON 5 EHALF OF SA I D ORPORAT ION , A ND A=.'I:aJc)WI,ED{aED TO MI, THAT c`A 11' %R! ( )RAT ION EXr,I., I D THE :�AMc` �: I'kU �'1'EF: i''.Il'tSC 1'( ) I 1 :� BYi,AW� :'R A RH , ()LU'T I,'N OF ITS ROAKI) : s: D I RECTGRS . ' '!Y HAND AND OFFICIAL :.TEAL. MY +` +MMISIOtd EXPIRES • bLIC' _ti AND FOR AiL _•I'A:'E. CONWAY & ASSOCIATES GRADING PLAN L 1056 COUNTY TIM, 4603-1 (619) - 7_53- 1453 CALIF. COORD. 314-1677 4 J06 , X10. 8n009 -1683 314 MAP NO . sN��r 3 °A 4 qty SEE SURVEYOR'S - NOTE CITY OF ENCINITAS TR CT No* - 603 ON SHEET 2 PROCEDURE OF'SURVEY MAP . ALL LOTS WITHIN THIS SUBDIVISION HAVE A MINIMUM ` OF 1010 SQUARE FEET OF SOLAR ACCESS FOR EACH LOT AND FOR EACH FUTURE- BUILDING SITE WITHIN THIS SUBDIVISION AS REQUIRED BY SECTION 81.401(N) OF , TJ)E SUBDIVISION ORDINAITCE. 1 V � UNLE:-S OTHERWISE SHOWN ON THIS MA:P, , ,A 3/4" X 18" r� � �� -t A l� ^� Y ( I,r_ -1 i ., y � -�--�� n n ,n r � 1 .. - _7 / r'� . � � � � � ♦-7 ST AMPED i l.' �: _ v Vr� 1 11. _I mss~ 1 i �� i�; 1i i ri•_� i I %. t - r _J. IRON PIPE -WITH DISC STAMPED L.S. 4368 HAS BEEN SET AT ALL REAR LOT CORNS -RS. FRON LOT CORNERS AND LOT CORNER INTERSECTIONS• WITH ;RATE: ROAI? �\ EASEMENT WILL BE M( ?NUMENTEi? WITH LEAD ti. RISC AT �_`.% 1 i V 1. i ONE FOOT OFFSET ON J IRON -'I-PES 3/4 LOT LINE PRODEDC W'tLL BE T LO': _ �_� � nlg ( 1 AT Rt BENSTEIN WHERE " it p/j � �1• 251 1 � / SET AT TRUE CORNERS. ( SEE DEFERRED , 'It"MEN_ r!_ \_� *� * 0_� ^ � � � ` d � ► Q 1 „ G ey NHL r TATION CERTIFICATE ON SHEET NO. 1. rl �j. THE BEGINNING AND ENDING LOT NUMBERS ARE 1 AND r ww f -ki' (d wAl w lCAIC.) 11 RESPECTTVELY. THE TOTAI, NUMPFR OF LOTS IS 11. / SUBDIVISION GROSS ACREAGE = 3.11 ACRE; l t 1 1 41oo;' m T� r ; ,-. •� i ` (g l op r 410 -ff) - •- , r �� Off 4Z III CS5 I 00C n 7-' IX EP gCEG . pl� LAIC 1:.y �P C! ,./ MR R If n. � y U #rt7 1*i . �� aAJ. l2I/9 JWP fD r;r�yf��isN f 1I w 'J41 I}t�13R S UBD I VI S I ON BOUNDARY 1 ; ,, �i do' 1914 �� 2� ip• �.60 01A./A1 n101 W r y 4✓1, r _3 Ilk” ce 409v OJO 1 000 LVAP I Out- °o v C dam 2��i•� t W �sa'�� "� y�z. t*' Ike °� yb ' ppy1T fG� ti�.G�✓�aC�i1 04 qo" I o�d 1q�AG� 'fa ps 40 mv fie r `g z 1/00 Grr 14 mAr 01. a (r;f i.1r6ENt� 7H 1.5 P/N NOT F011WD Oq! Y/►f. IZI AND K Ave 5 X 985. • a n Vl —�W •e► �' Q _ �' H o LEGEND ` o , o f��fcA1�y A yet z ?4" 1a1>,J �I � n1g t.s.43rs w o � - - • * A fJb � �.) no n►1 Ay goVV ( ) A l lill �� y MD7�b �� SUBDIVISION HOUNDARY �� " �?(�� nfhG. L -� P� i�iG• L. �! o: y• 11 EGA �. 0 y. I I° 1 9!/D$ 14 `ivy f i X00 ll�y N C I►�h o —� 9 1Jr fs' Goff N Q - o �<lA�y f u i a. �N o 'CCU 19DICATE5 ACCESS 916#7.3 1�41A1QU15NF.D I • d �. �A 11: p y X �� "� f - r " • �" ` AND WAW z O 1400 A 5 OLD AND � -` -�'�, 1 , � [+ ° T�/F SlIdJCCT f£i+11'E IS ABOUT 30 YEAK BQS /� OF BEARINGS _ , '.. . _ . [OCA7 /o : III $ KA10k/lJ TD I 5 T�l� P /1E5 / EEC/ r- - • fN� i3Al�f4 f7C f3�Af�frrtgy f01� �fffti Gu1+i✓EY r� R pOpf. � �' o� fNF W�yt>�i{�l� G 1�1� Ol% l3dd�n��if�l� ✓� y ° ; -, ; ; • �.�;)�• /q'' I�1 t71�JG �y t�3G'a �a�o� fly � ►r °��' �4" W �tt�tM�>✓�n �� ei��cT _ _ � • - yQGAi� Gv�i��f • + � `� � � � � - CONWAY & ASSOCIATES GRADING PLAN L 1056 COUNTY TM. 4603 (619) 753 1453 ., CALIF. COORS 314 314-1683 MAP N 0 4 0 4 yWfy ti s 'A� • 5'5 - PORTION OF RULENSTEIN / 39.0 AVENUE DEDICATED HEREON. / d k S /j��! //� aE WAM EASEFtENT DED ICATED HEREIN To • ti ?•�,p' SAN DIEGUITO WATER DISTRICT ABUTTERS RIGHT OF ACCESS N 7S° S 9'28 APPURTENANT TO LOT 1. IN !� �� Nei• - " �; A� Z I A SUeD/VIS/ON BOUNDARY, AND TO RUBENSTEIN AVENUE �p, sz. 93' RELINQUISHED AND WAIVED HEREON DETAIL A e��;,,� D� (R� I' � 1 1 - - , A 7a,,�1' '� , W. 294.05' NO 5CA 6 395• S' pgOpO 55� sO 3 VENID A D AVAv) - A - E MONAC \ , o Z U _ _ 5 / p y 5q 0' 9 u /QND UT/1. ,�`i O Ira EASL�MENT DEDICATED HEREON � �� ,.� �- �'j.� 3 � - _ 3 R SEWER ; ; L , , i ♦ , X. 009 ♦ Z �" N b '7 o. ° 1 t Er�sriN6 Z'EASEMENT 6RAA(TED / D S.D.64 N4 ' � � ZZ ` f O � .v RECORDED /t -YG�G � 47 �� / 2 f r ' In/ BOOK 713. PAGE Z 5. HBO DD 4 007 3/7 OF OEEDS. • 0� Zg I �� o �� , �l a �YJ J oO cz 1x•3 `v 'd�� /f1C� o 'x� 'vn�r t � f �-_ •i,�'� �; ��A -� "`- �RO�SEG DELTABEARING LENGTH RADIUS 4 + � �,,� a ��,• ;�'� , Ap p �> - , ✓A� o►R�in... ,`� �'� �� 1 6' SG, 42 .+ - 46 0 380.0 / , \; -a 3a' N7f 02'17"E 102 .19' 11.435 3 ML6 02 ' 17" E 28.99' 11 7 / �� d= i'�I3" _'° � 4 N18 57' W 57.00 � ��, \ 3 Q 5 Nb3' 57'43 " W 28.99' � p0 , s 2� Q 6 S71' 02' 17 "W /6.91 ` r ,_ TZ4O 0 w �•= 5 0 0 ' :;:-- , -; cv 1 = 2� a , Z 7 42' 4u 05' 1t3. 62 25.00" 8 108' 20 20 " 81.31 43.00' 1 43* 58' 16" 33.00' 43.00; --�, R 593.00' N 89 10 43 58' 16" 33.00' 43.00 e=&=�o'� - ga /9• 11 52' 11'35 38.42' 43.00' So, p 12 15 57'56" 11.98' 43.00' , lD �s�z � --, �1 13 7e 26'04" 31.61' 25.00' 9 R.59� 2T •" � � '' i?.Er 93 •x6 -� � 14 26'3u' 14' �- 27.30' 59.00" /'ROPGSED iii /YArE �7 1 ' ��I� �b Cz /O.oq...,. V �3 �[ 15 3� 19' $0' 40.50' 59.00' c . "J.9 5' 5"" FASEENT I , ,_ , 51, x ' , \ 16 33` 08 33" 34.13 tea. 00' p�`. ,, G - • �Jt " .f� � t f . DED /L./ TED .4/EREON. s � e ' 32 17 61 ' 23" 63.37 , 59.00' - Z 0 18 10 02" 1./&' - 59 .00 � 19 80 00' 3 z' 34.91' 25. 0' 0 ,° �•+I '�`�' ip'S .�,0 .�i (� n'1 X �'� M' �= �► 20 33 45" 34.01 S9.a0' GAFD /GATED cn 21 74' 02'24" 76.24' 59.00' �' A' •+ °' 1 , r rroc 22 N46 42 33 "E 43.00 (R) % .4�F i• v�: a. of s SDI �$�i tl f' �if17 23 N 8 9 19 ' 11 " W 43.00' (R ) g h �'O� h N�`• I o �+, ss gl-4 o f 24 N450 0' 55 "W 43 (R) 11 25 S18 57 43 "E 39.03 O �,/� 4 �+ 26 N71� 0211 17..E 65.15' `W , T 5 _ 27 N18 v7 43 W 38. 76 � G ,,� W� rr ,�► � � 3 3 Na � 28 N7I' U2' 17 25. 30 ' 9( iv N_ 29 N05�33 `05E 31.67 or � ' � / � 30 N66 27 54 � "E 34.5+5 >� • ; �` / m 7r7�'�l A�tC1 0 � � wer 31 S 18' 5('4 3 " E 32 N71' 02' 17 "E 25.95' IT IS THE RESPONSIBILITY O THE \ 33 S18' S7' 43 "E 63. 82' SUBDIVIDER TO PROVIDE INSURABLE ii► �� 1-" SF� D�7 - A /L A Z + 7 34 N7f 02' 17 "E 38..6' ACCESS TO THE LOTS CHEATED BY �` c • THIS VIAP. A$�j/� 1 37.52 3� 518�541 7�43 "28 "E E 6a.731 00 � 103.08 36 N66 3 !04.94' = - _ _ _ - - - 37 N 71* 33' 18" 3 &8' 02' ) - r E 18.04' LOT OWNERS (I WILL OA 6?l1I S HOW TITLE Z \ 98.5 390.93 38 oo . 380.00' N 75' 59 28 E - - - - - - /80.91 - - To T „. t�kl � ATE: R AS .7}iOWi� ON SAID MAP. ALL PROPERTY OWNERS WILL { s`uBDIVISN� BE GRANTED A NON - -EXCLUSIVE EA.'EMENT pUNDaRY - fo �3r"Al►4 OVER S AID ROADS. fo dpwo a. ai'17e W(�glw _ g o ft ff mi // /► 1 �,/� /J A ( / {// / �//��/J� / {j �/s /! / 1 / / /� [} /, /J •/rp// , r 1 J i \ r (� �lil/ YI /••, !.% t Y' ' ��I� L_� 1 ' '� !/1 ��VY +O , f. I. /•' • �nt/il , V �� ' rl w�� ;� ✓��' - • r .y + , M F ` ) ,..t ti ;. .1 +.1 tJ EX/ � � b�yGalpl /D •� � i 1�•,/ / l :L � " ti :h i 'i'. -+ �• v /D'sEk/ER E,4semENT e)uAlrev N• - : : �, c : ' J i + { ' • - - - -- - -' Tr' BOOK - - - -- , - M AP, TO TyEC /Tr'OF,E /TAS t,; ;(1AL kEGC DS. VICINITY - NC1 t� �iGA 1 CONWAY 8& ASSOCIATES GRADING PLAN L 1056 COUNTY T.M. 4603 - 1 (619) 753 CALIF COORD. • 314 SOWN 0 86009 3 _