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CT 01-05; CALAVERA HILLS HILLAGE W; HYDROLOGY STUDY CALAVERA HILLS VILL Y; 2002-10-18
HUNSAKER &. ASSOCIATES SAN OIECO. INC. PLANNING ENCINEERING SURVEYING IRVINE RIVERSIDE SAN OIECO HYDROLOGY STUDY for CALAVERA HILLS VILLAGE "Y" Oity of Carlsbad, Califomia Prepared for: McMillin Companies 2727 Hoover Avenue National City. OA 91950 w.o. 1941-41 October 18, 2002 IHunsalor & Associates San Diego, Inc. DAVE HAMMAR LEXWIUIMAN ALISA VIALPANDO DANA SEGUIN 10179 Huennekens SL San Dlego, CA 92121 (658) S58-4S00 PH (858) 558-1414 FX www.HunsakefSO.com lnfb4HunsakerSD.com Raymond L. Martin, R.C.E. Project Manager WA 1*41.41 l«lwniO:54A Calavera Hills Village "V Hydrology Study TABLE OF CONTENTS Executive Summary Introduction Existing Condition Proposed Project Results References SECTION I Methodology & Model Development Rational Method l-iydrologic Analysis Rational Method Hydrologic Output AES Onsite i-iydrologic Results - 100-Year Design Stonn Hydraulic Analysis Curb Inlet Design Developed Condition Hydrology Map II IV V (pocket) WAl«4|.41 T/lM22din( Calavera Hills Village "Y" Hydrology Study EXECUTIVE SUMMARY Introduction Tiie purpose of this report is to develop a storni drain system that wiil convey 100-year flows perthe County of San Diego Drainage Design Manual. This drainage report covers drainage improvements for Calavera Hills Village "Y" and will address the following: • Developed Condition 100-Year Peak Discharge (site runofO • iHydraulic Analysis • Curb Inlet Design PROJECT SITE VICINITY MAP NOT TO SCALE K:4 li:ycpamM94|UlVi03.dae mn IMI^t lA/lnvn ll-At AU Calavera Hills Village "Y" Hydrology Study Existing Condition Tiie Calavera Hills Village "Y" property is located within the City of Carlsbad west of the proposed extension of College Boulevard and north of tiie proposed Calavera Hills Village "X". Proposed Proiect Development of the site will include the construction of multi-family units as well as commercial pads. No offsite drainage will be conveyed througli tiie site. Runoff from the majority ofthe Viliage "Y" site will drain via a proposed stomn drain system to tiie southwest comer of the site. Tiie mnoff wili tiien empty into a proposed 18" stomi drain system that will convey mnoff through Calavera Hilis Village "X". A small portion oftiie Viliage "Y" site (northeast portion) wiil drain to a proposed 18-inch RCP in College Boulevard. Results The pealc flow conveyed to Calavera Hills Village "X" is 19.88 cfs. Tiie 100-year mnoff added to the College Boulevard stomn drain system Is 2.81 cfs. A tailwater elevation of 299.60 ft. (per Dwg. 390-9) was used at Node 52 (see enclosed map). This analysis uses iiydrologic and iiydraulic criteria as set forth by the City of Carisbad. Peak flowrates were based on a 100-year rainfall event. A mnoff coefflcient of 0.70, which con'esponds to multi-unit housing and Soii Group D, was used for aii multi-family areas, while a mnoff coefflcient of 0.85 was assumed for proposed commerciai areas. References Drainage Design and Procedure Manual. County of San Diego. April 1993. Improvement Plans for College Boulevanl and Cannon Road. Dwg. 390-9. Master Drainage and Stomi Water Quality Management Plan for the City of Carisbad, Califomia. City of Carisbad Engineering Department. Marcii 1994. lOli li:V9anAl»41\41\i03.d Calavera Hills Village "y Hydrology Study METHODOLOGY & MODEL DEVELOPMENT Rational Method Hvdroloalc Analvsis Computer Software Package - AES-99 Design Stomi - 100-year retum intervals Land Use - Multi-family units and commercial area onsite Soil Type - Hydrologic soii group D was assumed for aii areas. Group D soiis have very slow inflitration rates when thoroughly wetted. Consisting chiefly of clay soils with a high swelling potential, soils with a high pennanent water tabie, soils with clay pan or clay layer at or near the surface, and shallow soils over neariy impervious materials. Group D soils have a very slow rate of water transmission. Runoff Coefficient - in accordance with the City of Carisbad standards, single-family residential areas were designated a mnoff coefficient of 0.55, multi-family areas were designated a coefficient of 0.70, and natural areas were designated a mnoff coefficient of 0.45. When a watershed encompasses commercial area, a mnoff coefficient of 0.85 was selected. Rainfall intensity - Initial time of concentration values were detennined using ttie County of San Diego's overiand flow nomograph for urtjan areas. Downstream Tc values are detennined by adding the initial sub-basin time of concentration and ttie downstream routing time. Per City of Cartsbad standards, intensity values were determined from the County of San Diego's Intensity-Duration equation. Method of Analysis - The FRational Method is the most wideiy used hydrologic model for estimating peak mnoff rates. Applied to small urban and semi-urban areas with drainage areas less than 0.5 square miles, the Rational Method relates storm rainfall intensity, a mnoff coefficient, and drainage area to peak mnoff rate. This relationship is expressed by the equation: Q = CIA, where: Q = The peak mnoff rate in cubic feet per second at the point of analysis. C = A mnoff coefficient representing the area - averaged ratio of mnoff to rainfall intensity. I = The time-averaged rainfall intensity in inches per hour corresponding to ttie time of concentration. A = The drainage basin area in acres. To perfonn a node-link study, tiie total watershed area is divided into subareas which discharge at designated nodes. *Al*4MI T/MM2 2:21PM Calavera Hills Village "Y" Hydrology Study The procedure for ttie subarea summation model is as foliows: (1) Subdivide ttie watershed into an initial subarea (generally 1 iot) and subsequent subareas, which are generally less than 10 acres In size. Assign upstream and downstream node numbers to each subarea. (2) Estimate an initial Tc by using the appropriate nomograph or overiand flow velocity estimation. (3) Using tiie initial Tc, detennine ttie conresponding values of I. Then Q = C i A. (4) Using Q, estimate ttie travel time between tills node and ttie next by Manning's equation as applied to the particular channel or conduit linking the two nodes. Then, repeat ttie calculation for Q based on the revised intensity (whicti is a function of tiie revised time of concentration) The nodes are joined together by links, which may be stieet gutter flows, drainage swales, drainage ditcties, pipe flow, or various channel flows. The AES-99 computer subarea menu is as follows: SUBAREA HYDROLOGIC PROCESS 1. Confluence analysis at node. 2. Initial subarea analysis (including time of concentration calculation). 3. Pipe flow travel time (computer estimated). 4. Pipe flow travel time (user specified). 5. Trapezoidal ctiannel travel time. 6. Street flow analysis through subarea. 7. User - specified infomnation at node. 8. Addition of subarea mnoff to main line. 9. V-gutter flow through area. 10. Copy main stream data to memory bank 11. Confluence main stream data with a memory bank 12. Clear a memory bank At the confluence point of two or more basins, the following procedure is used to combine peak flow rates to account for differences In tiie basin's times of concentration. This adjustment is based on tine assumption that each basin's hydrographs are triangular in shape. (1) . if the collection streams have the same times of concentration, then the Q values are directly summed, Qp = Qa + Qb;Tp = Ta = Tb (2) . If the collection streams have different times of concentration, ttie smaller of the tributary Q values may be adjusted as follows: Un|<inM94IV4I>iOMn! Calavera Hills VHIage'V Hydrology Study (I) . The most frequent case is where the collection stream with tine longer time of concenti^tion has the larger Q. The smaller Q vaiue is adjusted by the ratio of rainfall intensities. Qp = Q. + Qb (ia/lb); Tp = Ta (II) . in some cases, the collection stream with the shorter time of concentration has the larger Q. Then tine smaller Q is adjusted by a ratio of the T values. Qp = Qb+Qa (Tbn-a):Tp = Tb Calavera Hills village Hydrology Study RATIONAL METHOD HYDROLOGIC OUTPUT AES Onsite Hydrologic Results 100-Year Design Storm WAlftMl ia»022:2im **************************************************************************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT 1985,1981 HYDROLOGY MANUAL (c) Copyright 1982-99 Advanced Engineering Software (aes) Ver. l.SA Release Date: 01/01/99 License ID 1239 Analysis prepared by: Hunsalcer & Associates San Diego, Inc. 10179 Huennelcens Street San Diego, Califomia (619) 558-4500 Planning Engineering Su2rveying • *•*•*«**•**•***•••*•'••*•• DESCRIPTION OP STUDY ************************** * CALAVERA HILLS VILLAGE "Y* * * 100-YEAR DEVELOPED CXWDITICXI ANALYSIS * * NO: 1941-41, DAT: 236 * *••****••*•****••***••*•****••**•**•••••*********•••***•••*••**«•**••***** FILE NAME: H:\AES99\1941\41\DEV100A.DAT TIME/DATE OF STUDY: 10:20 10/18/2002 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATIC»I: 1985 SAN DIEGO MANUAL CRITERIA USER SPECIFIED STORM EVENT(YEAR) - 100.00 6-HOUR DURATION PRECIPITATION (INCHES) - 2.800 SPECIFIED MINIMUM PIPE SIZE(INCH) - 18.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE > 0.90 SAN DIBGO HYDROLOGY MANUAL "C'-VALUES USED NOTE: ONLY PEAK COHFLUENCE VALUES CONSIDERED *************************************************************************** FLOW PROCESS FROM NODE 120.00 TO NODE 2.00 IS CODE > 21 »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS«<« SOIL CLASSIFICATION IS "D* HULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOH-LEMGTH - 220.00 UPSTREAM ELEVATION - 313.00 DOHNSTREAM ELEVATION - 309.00 ELEVATION DIFFERENCE > 4.00 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) • 8.750 100 YEAR RAINFALL INTENSITY(INCH/HOUR) « 5.142 SUBAREA RUNOFF(CFS) • 0.36 TOTAL AREA(ACRES) - 0.10 TOTAL RUNOFF(CFS) - 0.36 **************************************************************************** FLOW PROCESS FROH NODE 2.00 TO NODE 3.00 IS CODB - 3 »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) ««< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 2.2 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 3.0 UPSTREAM NODE ELEVATION - 304.68 DOWNSTREAM NODE ELEVATION - 303.69 FLOWLENGTH(FEET) - 72.09 MANNING'S N - 0.013 ESTIMATED PIPE DIAMETER(INCH) - 18.00 NUMBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) - 0.36 TRAVEL TIME(HIN.) - 0.40 TC(MIN.) > 9.15 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODE - 10 »»>MAIN-STREAM MEMORY COPIED ONTO MSTORY BANK # 1 «<« FLOW PROCESS FROM NODE 100.00 TO NODE 3.00 IS CODB - 21 >»»RATICaiAL METHOD INITIAL SUBAREA ANALYS1S<«« SOIL CLASSIFICATlCa* IS "D" COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT - .8500 INITIAL SUBAREA FLOW-LENGTH - 210.00 UPSTREAM ELEVATION - 313.00 DOWNSTREAM ELEVATION - 308.20 ELEVATION DIFFERENCE « 4.80 URBAN SUBAREA OVERLAND TIME OF FLOW (HINUTES) - 4 .951 TIME OF CONCENTRATION ASSUMED AS 6-MINUTES 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 6.559 SUBAREA RUNOFF(CFS) - 3.29 TOTAL AREA(ACRES) - 0.59 TOTAL RUNOFF(CFS) - 3.29 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODE - 1 »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< TOTAL NUMBER OF STREAMS - 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) - 6.00 RAINFALL INTENSITY(INCH/HR) - 6.56 TOTAL STREAM ARBA(ACRES) - 0.59 PEAK FLOW RATE(CFS) AT CONFLUENCE » 3.29 FLOW PROCESS FROM NODE 121.00 TO NODE 3.00 IS CODE « 21 »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<«« SOIL CLASSIFICATION IS "0" MULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOW-LENGTH - 250.00 UPSTREAM mjBVKriaS m 313.00. DOWNSTREAH ELEVATION - 308.20 ELBVATKXt DIFFERENCE - 4.80 URBAN SX}BARSA OVERLAND TIME OF FLOW (MINUTES) m 9.160 100 YEAR RAINFALL INTENSITY (INCH/HOUR) - 4.993 SUBAREA RUNOFF(CFS) > 0.45 TOTAL AREA(ACRES) - 0^13 TOTAL RUNOFF(CFS) - 0.45 **•****•*••*********************••*****•*••*•*•*•**•••*«•«**•*««««*«*««««««, FLOW PROCESS FROH NODE 3.00 TO NODE 3.00 IS CODB • 1 »>»DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< »»>AND COHPUTE VARIOUS CONFLUENCED STREAH VALUES««< TOTAL NUHBER OF STREAMS - 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIHE OF CONCENTRATION(MIN.) - 9.16 RAINFALL INTEHSITY(INCH/HR) > 4.99 TOTAL STREAM AREA(ACRES) - 0.13 PEAK FLOW RATE(CFS) AT COHFLUENCE - 0.45 ** CONFLUENCE DATA ** STREAH RUNOFF Tc INTENSITY AREA NUMBER (CPS) (HIN.) (INCH/HOUR) (ACRE) 3.29 0.45 6.00 9.16 6.559 4.993 0.59 0.13 RAINFALL INTENSITY AND TIHE OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc NUHBER (CFS) (HIN.) 1 3.64 6.00 2 2.96 9.16 INTENSITY (INCH/HOUR) 6.559 4.993 COHPUTED CCmFLUENCE ESTIHATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) - 3.64 Tc(HIN.) • TOTAL AREA(ACRES) - 0.72 6.00 ************************ t«»1i***i,*»*1,**»»t1,1H,t,tt,tt*t,1,**tH,*i,1,1,1,ttf*1,»1,i,iH,tn,t - FLOW PROCESS PROM NODE 3.00 TO NODE 3.00 IS CODE - 11 »»>CONPLUBNCB MEMORY BANK # 1 WITH THE HAIN-STREAH MEHORY««< *• HAIN STREAH CCWFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY HUMBER (CFS) (MIN.) (INCH/HOUR) 1 3.64 6.00 6.559 *• HEHORY BAHK # 1 CONFLUENCE DATA ** STREAH RUNOFF To INTENSITY NUMBER (CPS) (MIN.) (INCH/HOUR) 1 0.36 9.15 4.996 ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN.) (INCH/HOUR) 1 3.91 6.00 6.559 2 3.13 9.15 4.996 COMPUTED COHFLUEHCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) - 3.91 Tc{MIN.) . TOTAL AREA(ACRES) - 0.82 AREA (ACRE) 0.72 AREA (ACRE) 0.10 6.00 FLOW PROCESS FROM NODE 3.00 TO NODE 3.00 IS CODB « 12 »»>CLEAR HEMORY BAHK # 1 ««< FLOW PROCESS FROH NODE 3.00 TO NODE 31.00 IS CODB » 3 »>»COHPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USING COHPUTER-ESTIHATED PIPESIZE (NOH-PRESSURE FLOW)««< ESTIHATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 8.0 INCHES PIPEFLOW VELOCITY(FEET/SEC.) « 5.2 UPSTREAM HODE ELEVATION - 303.36 DOWNSTREAM NOOE ELEVATION • 302.52 FLOWLENGTH(FEET) - 89.06 MANNING'S N - 0.013 ESTIMATED PIPE DIAMETER(IHCH) - 18.00 HUMBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CPS) « 3.91 TRAVEL TIHE(MIN.) . 0.29 TC(MIH.) - 6.29 **********************************••*•*•*«**•********«**•••««*«*«««*««•»*«»» FLOW PROCESS FROM HODE 31.00 TO HODE 31.00 IS CODE • 1 »»>DESIGHATE INDEPEHDENT STREAM FOR COHFLUENCE««< TOTAL HUMBER OF STREAHS - 2 COHFLUEHCE VALUES USED FOR INDEPENDENT STREAH 1 ARE- TIHE OF CONCENTRATION(HIH.) - 6.29 RAINFALL INTEHSITY(INCH/HR) - 6.36 TOTAL STREAH AREA(A(31ES) « 0.82 PEAK PLOW RATE(CPS) AT CONFLUENCE - 3.91 FLOW PROCESS FROH NODE 102.00 TO NODE 103.00 IS CODfi > 21 »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATION IS "D" MULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 IHITIAL SUBAREA FLOW-LENGTH - 140.00 UPSTREAM ELEVATION - 310.10 DOWNSTREAM ELEVATIOI - 308.70 ELEVATION OIPFBRENCE « 1.40 URBAN SUBAREA OVERLAND TIHE OF PLOW(HINUTES) - 8.519 100 YEAR RAINFALL INTEHSITY(INCH/HOUR) - 5.231 SUBAREA RUNOFF(CPS) - 0.77 TOTAL AREA(ACRES) m 0.21 TOTAL RUNOFF(CFS) - 0.77 PLOW PROCESS FROH NODE 103.00 TO NODE 4.00 IS CODE - 6 »»>COHPUTB STREETFLOW TRAVELTIHE THRU SUBAREA«<« UPSTREAH ELEVATION . 308.70 DOWNSTREAH ELEVATION""""3O"SO°""'""' STREET LENGTH(FEET) - 110.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(PEET) - 12.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK - 10.50 INTERIOR STREET CROSSFALL(DECIHAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIHAL) - 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF > 1 **TRAVELTIME COHPUTED USIHG MEAN FLOW(CPS) - 1 40 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) > 0.28 HALFSTRBST FLOODWIDTH(PEET) - 7.73 AVERAGE PLOW VELOCITY(FEET/SEC.) - 1.96 PRODUCT OF DEPTHiVELOCITY > 0.55 STREETFLOW TRAVELTIHE(MIN) - 0.94 TC(MIN) - 9.45 100 YEAR RAIHFALL INTENSITY(INCH/HOUR) . 4.891 SOIL CLASSIFICATION IS "D" HULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 SUBAREA AREA(ACRES) - 0.37 SUBAREA RUNOFF(CFS) « 1.27 SUMHED AREA<ACRBS) - 0.58 TOTAL RUNOFF(CFS) - 2.04 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) - 0.31 HALPSTREET FLOODWIDTH(FEET) - 9.05 FLOW VELOCITY(FEET/SEC.) - 2.17 DEPTH*VELOCITY - 0.67 PLOW PROCESS FROH NODE 4.00 TO HODE 31.00 IS CODE « 3 »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USIHG COMPUTER-ESTIMATED PIPESIZE (HOH-PRESSURE PLOW) <«« ESTIHATED PIPE DIAHETER(INCH) INCREASED TO 18.000 DEPTH OP FLOW IN 18.0 INCH PIPE IS 4.6 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 5.7 UPSTREAH HODE ELEVATION » 303.13 DOTOSTREAH NODE ELEVATION » 302.52 FLOWLENGTH(FEET) • 30.50 HANNING'S N • 0.013 ESTIMATED PIPE DIAHETER(INCH) - 18.00 NUMBER OP PIPES PIPEFLOW THRU SUBAREA(CFS) - 2.04 TRAVEL TIHE(MIN.) - 0.09 TC(HIH.) - 9.54 ******************•**•*************««*»****«****«••««**«««*«•»•««««««,,«,««* FLOW PROCESS PROM NODE 31.00 TO NODE 31.00 IS CODE > 1 >»»DESIGNATE INDEPENDENT STREAM POR CONFLUENCE««< »»>AHD COMPUTE VARIOUS COHFLUEHCED STREAH VALUES««< TOTAL HUMBER OF STREAMS - 2 CCXIFLUENCE VALUES USED POR INDEPENDENT STREAM 2 ARB: TIME OF CONCENTRATI(»I(MIN.) - 9.54 RAINFALL INTENSITY(INCH/HR) - 4.86 TOTAL STREAH AREA(ACRES) - 0.58 PEAK FLOW RATE(CFS) AT COHFLUEHCE > 2.04 •* COHFLUEHCE DATA STREAM RUHOFF Tc IHTENSITY AREA NUMBER (CPS) (MIN.) (IHCH/HOUR) (ACRE) 1 3.91 6.29 6.365 0.82 2 2.04 9.54 4.862 0.58 RAIHFALL IHTEHSITY AND TIHE OP CONCENTRATION RATIO CONFLUENCE FORMULA USED POR 2 STREAHS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc IHTENSITY NUMBER (CPS) (MIH.) (IHCH/HOUR) 1 5.46 6.29 6.365 2 5.02 9.54 4.862 COMPUTED COHFLUEHCE ESTIHATES ARB AS FOLLOWS: PEAK FLOW RATE(CFS) > 5.46 Tc(HIH.) - 6.29 TOTAL AREA(ACRES) - 1.40 PLOW PROCESS FROH NODE 31.00 TO NODE 32.00 IS CODB - 3 »»>COHPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USINQ COMPXTTER-BSTIMATED PIPESIZE (NOH-PRESSURE FLOW)<«<< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 8.9 IHCHES PIPEFLOW VELOCITY(FBET/SEC.) - 6.3 UPSTREAM NODE ELEVATION - 302.19 DOWNSTREAM NODE ELEVATION • 300.24 FLOWLENGTH(FEET) - 154.51 MAHHING'S N - 0.013 ESTIHATED PIPE DIAHETER(INCH) « 18.00 NUHBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CPS) - 5.46 TRAVEL TIHBCHIN.) . 0.41 TC(HIN.) - 6.70 PLOW PROCESS FROM HODE 32.00 TO NODE 32.00 IS CODE • 1 »»>DESIGHATE INDEPEHDEHT STREAH FOR COHFLUEHCE««< TOTAL NUHBER OF STREAHS - 3 CONFLUENCE VALUES USED POR INDEPENDENT STREAM 1 ARE: TIHE OF CONCEHTRATIOH(MIH.) - 6.70 RAIHFALL INTEHSITY(IHCH/HR) - 6.11 TOTAL STREAM AREA(ACRES) > 1.40 PEAK FLOW RATE(CFS) AT COHFLUENCE - 5.46 PLOW PROCESS PROM NODE 104.00 TO NODE 105.00 IS CODB > 21 • »»>RATIONAL HETHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATIOH IS "D" HULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOW-LENGTH • 120.00 UPSTREAH BLEVATK^ > 309.70 DOWNSTREAM ELEVATION - 308.50 ELEVATION DIFFERENCE - 1.20 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) - 7.887 100 YEAR RAINFALL INTENSITY(INCH/HOUR) « 5.498 SUBAREA RUNOFF(CFS) - 0.65 TOTAL AREA(ACRES) - 0.17 TOTAL RUNOFF(CFS) - 0.65 *****•**•**•*•••*«*••*•*•***••••******•••**•*•****•*********•*••••*••••••••• FLOW PROCESS FROH NODE 105.00 TO NODE 5.00 IS CODE • 6 »»>COHPUTE STREETFLOW TRAVELTIME THRU SUBAREA<«« UPSTREAM ELEVATIOH - 308.50 DOWNSTREAH ELEVATION - 306.90 STREET LENGTH(PEET) - 160.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(FEET) - 12.00 DISTAHCE FROM CROWH TO CROSSFALL GRADEBREAK > 10.50 INTERIOR STREET CROSSFALL(DECIMAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) - 0.020 SPECIFIED HUMBER OF HALFSTREETS CARRYING RUNOFF - 1 **TRAVELTIME COHPUTED USING MEAN PLOW(CFS) " 1.77 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(PEET) - 0.29 HALPSTREET FLOODWIDTH(FEET) > 8.39 AVERAGE FLOW VELOCITY(FEET/SEC.) - 2.15 PRODUCT OF DEPTH&VELOCITY - 0.63 STREETFLOW TRAVELTIME(HIN) - 1.24 TC(MIN) - 9.13 100 YEAR RAINFALL INTENSITY(INCH/HOUR) • 5.004 SOIL CLASSIFICATIOH IS "D" MULTI-UHITS DEVELOPMEHT RUHOFF COEFFICIEHT • .7000 SUBAREA AREA(ACRES) - 0.64 SUBAREA RUNOFF(CFS) - 2.24 SUMMED AREA(ACRES) - 0.81 TOTAL RUNOFF(CFS) - 2.90 END OF SUBAREA STREETFLOW HYDRAULICS: DBPTH(PEET) - 0.33 HALPSTREET FLOODWIDTH(FEET) - 10.36 FLOW VELOCITY(FEET/SEC.) - 2.43 DEPTH*VELOCITY - 0.81 •**•«•••**•»***••***••*****•******•*«•*****************•******************** FLOW PROCESS FROM NODE 5.00 TO NODE 32.00 IS CODE - 3 »»>COHPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USING COHPUTER-ESTIHATED PIPESIZE (HON-PRESSURE FLOW)««< ESTIHATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF PLOW IN 18.0 INCH PIPE IS 5.5 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 6.3 UPSTREAM NODE ELEVATION - 301.02 DOWNSTREAH NODE ELEVATION - 300.27 FLOWLENGTH(FEET) - 37.47 MANNIHG'S H « 0.013 ESTIMATED PIPE DIAMETER(INCH) - 18.00 NUMBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) - 2.90 TRAVEL TIHE(HIN.) - 0.10 TC(HIN.) » 9.23 **************************************************************************** FLOW PROCESS FROH HODE 32.00 TO NODE 32.00 IS CODE - 1 »»>DESIGNATE INDEPENDENT STREAH POR COHFLUBHCE«<« TOTAL NUMBER OP STREAHS » 3 CONFLUEHCE VALUES USED FOR INDEPENDENT STREAH 2 ARE: TIME OF CONCENTRATION(HIN.) » 9.23 RAINFALL INTENSITY(INCH/HR) - 4.97 TOTAL STREAM AREA(ACRES) > 0.81 PEAK FLOW RATE(CFS) AT CONFLUENCE - 2.90 •************•***•********«*********************««*•**»**««*«*»•«*«*«««««««• FLOW PROCESS FROM NODE 106.00 TO HODE 107.00 IS CODE - 21 »»>RATIONAL HETHOD IHITIAL SUBAREA ANALYSIS«<« SOIL CLASSIFICATIOH IS "D" HULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOW-LENGTH > 160.00 UPSTREAM ELEVATION - 309.20 DOWNSTREAH ELEVATION - 307.60 ELEVATION DIFFERENCE - 1.60 URBAH SUBAREA OVERLAND TIHE OF FLOW(HINUTES) - 9.107 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 5.011 SUBAREA RUNOFF(CPS) > 0.56 TOTAL AREA(ACRES) - 0.16 TOTAL RUNOFF(CFS) - 0.56 A*************************************************************************** FLOW PROCESS FROH HODE 107.00 TO HODE 6.00 IS CODB > 6 »»>COHPUTE STREETFLOW TRAVELTIHE THRU SUBAREA««< UPSTREAH ELEVATION - 307.60 DOWNSTREAH ELEVATION - 305.00 STREET LEHGTH(FEET) - 260.00 CURB HEIGHT(IHCHES) - 6. STREET HALFWIDTH(FEET) > 12.00 DISTAHCE FROM CROWH TO CROSSFALL GRADEBREAK « 10.50 IHTERIOR STREET CROSSFALL(DECIMAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIHAL) - 0.020 SPECIFIED HUHBER OF HALFSTREETS CARRYIHG RUNOFF - 1 • •TRAVELTIME C(»«PUTBD USING MEAN PLOW (CFS) - 1.56 STREETFLOW MODEL RESULTS: STREET FLOWDEPTH(FEET) - 0.29 HALFSTREET FLOODWIDTH(FEET) n 8.39 AVERAGE FLOW VELOCITY(FEET/SEC.) - 1.90 PRODUCT OF DEPTHtVELOCITY » 0.56 STREETFLOW TRAVELTIME(MIN) > 2.29 TC(MIN) - 11.39 100 YEAR RAINFALL INTENSITY(INCH/HOUR) > 4.337 SOIL CLASSIFICATION IS "D" MULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT » .7000 SUBAREA AREA(ACRES) - 0.65 SUBAREA RUNOFF(CFS) > 1.97 SUMMED AREA(ACRES) - 0.81 TOTAL RUNOFF(CFS) - 2.53 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) « 0.33 HALFSTREET FLOODWIDTH(FEET) • 10.36 FLOW VELOCITY(FEET/SEC.) • 2.13 DEPTH*VELOCITY » 0.71 FLOW PROCESS FROM NODE 6.00 TO HODE 32.00 IS CODE > 3 >»»COMPUTB PIPEFLOW TRAVELTIME THRU SUBAREA««< >»»USIHG COMPUTER-ESTIHATED PIPESIZE (HON-PRESSURE FLOW) <«« ESTIMATED PIPE DIAMETER(IHCH) IHCREASED TO 18.000 DEPTH OF FLOW IN 18.0 IHCH PIPE IS 6.2 IHCHES PIPEFLOW VELOCITY(FEET/SEC.) » 4.7 UPSTREAM NODE ELEVATION • 301.30 DOWNSTREAH HODE ELEVATIOH = 300.27 FLOWLENGTH(FEET) - 103.30 HANNING'S N - 0.013 ESTIHATED PIPE DIAHETER(INCH) - 18.00 NUMBER OP PIPES PIPEFLOW THRU SUBAREA(CFS) « 2.53 TRAVEL TIME(MIN.) . 0.37 TC(MIN.) - 11.76 PLOW PROCESS FROM NODE 32.00 TO HODE 32.00 IS CODE • 1 »>»DESIGNATE IHDEPEHDEHT STREAM FOR COHFLUENCE««< >»»AND OmPUTE VARIOUS CONFLUENCED STREAM VALUES««< TOTAL NUMBER OF STREAMS - 3 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: TIHE OP CONCEHTRATIOH(HIH.) > 11.76 RAINFALL INTENSITY(IHCH/HR) > 4.25 TOTAL STREAH AREA(ACRES) - 0.81 PEAK FLOW RATE(CFS) AT COHFLUENCE - 2.53 ** COHFLUENCE DATA ** STREAM RUHOFF Tc IHTEHSITY AREA HUHBER (CFS) (HIN.) (INCH/HOUR) (ACRE) 1 5.46 6.70 6.111 1.40 2 2.90 9.23 4.969 0.81 3 2.53 11.76 4.250 0.81 RAIHFALL INTENSITY AND TIHE OF CONCENTRATION RATIO CONFLUENCE FORHULA USED FOR 3 STREAHS. ** PEAK FLOW RATE TABLE *• STREAH RUNOFF Tc INTENSITY NUHBER (CFS) (HIN.) (INCH/HOUR) 1 9.58 6.70 6.111 2 9.51 9.23 4.969 3 8.81 11.76 4.250 COMPUTED COHFLUEHCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) - 9.58 Tc(HIH.) - 6.70 TOTAL AREA(ACRES) • 3.02 **************************************************************************** FLOW PROCESS PROM NODE 32.00 TO NODE 34.00 IS CODB > 3 »»>COMPUTB PIPEFLOW TRAVELTIHE THRU SUBARBA«<« »»>USIN6 COMPUTER-ESTIMATED PIPESIZE (HOH-PRESSURE FLOW) ««< »M»^*t^»»»mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmMmmmmmmmmmm ESTIMATED PIPE DIAMETER(IHCH) INCREASED TO 18.000 DEPTH OF PLOW IN 18.0 INCH PIPE IS 8.1 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 12.4 UPSTREAM NODE ELEVATION - 299.94 DOWNSTREAM NODE ELEVATION > 289.40 FLOWLENGTH(FEET) - 199.58 MANNING'S N « 0.013 ESTIMATED PIPE DIAMETER(INCH) « 18.00 HimBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) - 9.58 TRAVEL TIHE(MIN.) > 0.27 TC(MIN.) > 6.96 FLOW PROCESS FROH NODE 34.00 TO NODE 34.00 IS CODE - 1 »»>DESIGNATE INDEPENDENT STREAH FOR CONFLUENCE<«« TOTAL NUHBER OF STREAHS - 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAH 1 ARE: TIME OF CONCENTRATIOH(HIH.) > 6.96 RAIHFALL INTENSITY(IHCH/HR) - 5.96 TOTAL STREAH AREA(ACRES) • 3.02 PEAK FLOW RATE(CFS) AT CONFLUENCE - 9.58 **************************************************************************** FLOW PROCESS FR(3M NODE 108.00 TO NODE 109.00 IS CODE > 21 »»>RATIONAL HETHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATION IS "D" HULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 IHITIAL SUBAREA FLOW-LENGTH - 100.00 UPSTREAM ELEVATION - 307.50 DOWNSTREAH ELEVATION « 306.00 ELEVATION DIFFERENCE - 1.50 URBAN SUBAREA OVERLAND TIME OF FLOW(HINUTES) - 6.290 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 6.362 SUBAREA RUNOFF(CFS) - 0.62 TOTAL AREA(ACRES) - 0.14 TOTAL RUNOFF(CPS) - 0.62 *****•*•*•*•**************************»*****«*********«*••«*******»**«««««»• PLOW PROCESS FROH NODE 109.00 TO NODE 7.00 IS CODE - 6 »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA«<« UPSTREAM ELEVATION - 306.00 DOWNSTREAM ELEVATIOH - 300.00 STREET LENGTH(FEET) m 240.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(FEET) - 12.00 DISTANCE FROH CROWN TO CROSSFALL GRADEBREAK - 10.50 INTERIOR STREET CROSSFALL(DECIMAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) - 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF - 1 **TRAVELTIHE COMPUTED USING MEAN FLOW(CFS) - 2.22 STREETFLOW HODEL RESULTS: STREET FLOWDEPTH(PEET) > 0.28 HALFSTREET FLOODWIDTH(FEET) - 7.73 AVERAGE FLOW VELOCITY(FEET/SEC.) > 3.09 PRODUCT OF DEPTH&VELOCITY » 0.87 STREETFLOW TRAVELTIHE(HIN) - 1.29 TC(HIN) - 7.58 100 YEAR RAINFALL INTEHSITY(IHCH/HOUR) - 5.640 SOIL CLASSIFICATIOH IS "D" HULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT > .7000 SUBAREA AREA(ACRBS) « 0.80 SUBAREA RUNOPF(CFS) > 3.16 SUHHED AREA(ACRES) - 0.94 TOTAL RUNOFF(CPS) - 3.78 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) - 0.32 HALFSTREET FLOODWIDTH(PEET) - 9.70 FLOW VELOCITY(FEET/SBC.) « 3.57 DEPTH'VELOCITY - 1.14 k*************************************************************************** FLOW PROCESS FROH NODE 7.00 TO NODE 34.00 IS CODE > 3 »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA<«« »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) ««< ESTIMATED PIPE DIAMETER(INCH) IHCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 5.7 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 7.9 UPSTREAM NODE ELEVATIOH > 292.75 DOWHSTREAM NODE ELEVATION - 289.40 FLOWLENGTH(FEET) • 109.28 MAHHIHG'S N • 0.013 ESTIMATED PIPE DIAMETER(INCH) - 18.00 NUHBER OP PIPES « 1 PIPEFLOW THRU SUBAREA(CFS) « 3.78 TRAVEL TIME(HIN.) - 0.23 TC(HIH.) - 7.81 A*************************************************************************** FLOW PROCESS FROH HODE 34.00 TO HODE 34.00 IS CODE • 1 »»>DESIGNATE INDEPENDENT STREAH FOR CONPLUENCE«<« »»>AND COHPUTE VARIOUS CONFLUENCED STREAH VALUES««< TOTAL NUHBER OP STREAHS - 2 CONFLUENCE VALUES USED FOR IHDEPEHDEHT STREAM 2 ARE: TIHE OP COHCENTRATION(HIN.) > 7.81 RAINFALL INTENSITY(IHCH/HR) - 5.53 TOTAL STREAM AREA(ACRES) > 0.94 PEAK PLOW RATE(CPS) AT COHFLUEHCE - 3.78 •* COHFLUEHCE DATA ** STREAM RUNOFF Tc INTENSITY AREA HUMBER (CPS) (MIH.) (IHCH/HOUR) (ACRE) 1 9.58 6.96 5.958 3.02 2 3.78 7.81 5.532 0.94 RAIHFALL IHTEHSITY AND TIME OP C(»ICENTRATION RATIO CONFLUEHCE FORMULA USED POR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUHOFF Tc INTENSITY NUMBER (CPS) (HIH.) (IHCH/HOUR) 1 13.09 6.96 5.958 2 12.68 7.81 5.532 COHPUTED COHFLUENCE ESTIMATES ARB AS FOLLOWS: PEAK PLOW RATE(CPS) - 13.09 Tc(MIN.) - 6.96 TOTAL AREA(ACRES) - 3.96 *•****••*•*****•*•***••*****•**••*••••••*•**•**•••***•****•***•*•******•**** FLOW PROCESS FROM HODE 34.00 TO NODE 35.00 IS CODB - 3 »>»COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »>»USING COMPUTER-ESTIMATED PIPESIZE (HOH-PRESSURE FLOW) ««< DEPTH OF PLOW IN 21.0 INCH PIPE IS 14.5 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 7.4 UPSTREAH NODE ELEVATION - 289.07 DOWNSTREAH HODE ELEVATION - 288.09 PLOWLBNGnKFEET) • 86.92 HANNING'S N > 0.013 ESTIHATED PIPE DIAMETER(INCH) - 21.00 NUMBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CPS) - 13.09 TRAVEL TIHE(HIH.) - 0.20 TC(HIH.) - 7.16 **************************************************************************** PLOW PROCESS FROH HODE 35.00 TO HODE 35.00 IS CODB - 1 >»»DESiaNATE INDEPENDENT STREAH FOR CONFLUENCE<«« TOTAL NUHBER OF STREAHS - 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAH 1 ARE: TIHE OF CONCEHTRATIOH(MIN.) - 7.16 RAIHFALL INTEHSITY(INCH/HR) - 5.85 TOTAL STREAM AREA(ACRES) - 3.96 PEAK FLOW RATE(CFS) AT CONFLUENCE - 13.09 **************************************************************************** FLOW PROCESS FROH NODE 110.00 TO HODE 111.00 IS CODB » 21 »>»RATIOHAL HETHOD IHITIAL SUBAREA ANALYSIS«<« SOIL CLASSIFICATION IS "D" HULTI-UNITS DEVELOPHENT RUHOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOW-LENGTH > 120.00 UPSTREAH BLEVATI(»I - 297.00 DOWNSTREAH ELEVATION - 295.80 ELEVATIOH DIFFEREHCE - 1.20 URBAN SUBAREA OVERLAND TIHE OF FLOW(HINUTES) » 7.887 100 YEAR RAINFALL INTENSITY(INCH/HOUR) • 5.498 SUBAREA RUNOFF(CFS) - 0.65 TOTAL AREA(ACRES) » 0.17 TOTAL RUNOFF(CPS) - 0.65 *•»»***•»•^•^**»»•^****»**^l*•»^l*^,•l,1,^,*^,ttt»*^l•^•^•li•ll•^^,1,»*^i^l*^i^,tt^,^,1,^,1,^,^,^,1,1,^^,1,^,^,^,.^^,f^,^,^, FLOW PROCESS FROH NODE 111.00 TO NODE 8.00 IS CODE » 6 »>»COHPUTE STREETFLOW TRAVELTIHE THRU SUBAREA«<« UPSTREAM ELEVATION > 295.80 DOWNSTREAM ELEVATION - 293.00 STREET LENGTH(PEET) » 280.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(FEET) > 12.00 DISTANCE FRCm CROWN TO CROSSFALL GRADEBREAK > 10.50 INTERIOR STREET CROSSFALL(DECIMAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIMAL) - 0.020 SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF - 1 ••TRAVELTIME COMPUTED USING MEAN FLOW(CPS) - 1.91 STREETFLOW HODEL RESULTS: STRBBT FLOWDEPTH(FEET) - 0.31 HALFSTREET FLOODWIDTH(FEET) - 9.05 AVERAGE FLOW VELOCITY(FEET/SEC.) > 2.04 PRODUCT OF DEPTH&VELOCITY - 0.63 STREETFLOW TRAVELTIHE(HIN) « 2.28 TC(HIN) > 10.17 100 YEAR RAINFALL IHTENSITY(INCH/HOUR) - 4.666 SOIL CLASSIFICATION IS "D" HULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT • .7000 SUBAREA AREA(ACRBS) - 0.76 SUBAREA RUNOFF(CFS) - 2.48 SUHHED AREA(ACRES) - 0.93 TOTAL RUNOFF(CFS) - 3.14 BND OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) - 0.35 HALFSTREET FLOODWIDTH(FEET) » 11.02 FLOW VELOCITY(FEET/SEC.) - 2.36 DEPTH*VBLOCITY - 0.82 ********************•************«****«*•**•*«**»****•*«*•«**«*«**««««•««««* PLOW PROCESS FROM NODE 8.00 TO NODE 35.00 IS CODE - 3 »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< >»»USING COHPUTER-ESTIHATEO PIPESIZE (NON-PRESSURE FLOW) <«« ESTIHATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 IHCH PIPE IS 7.0 IHCHES PIPEFLOW VELOCITY(FEET/SEC.) - 4.9 UPSTREAM NODE ELEVATION - 288.22 DOWNSTREAM NODE ELEVATION - 288.09 FLOWLENGTH(FEET) - 13.46 MANNING'S N > 0.013 ESTIMATED PIPE DIAMETER(IHCH) « 18.00 NUMBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CPS) « 3.14 TRAVEL TIME(HIN.) • O.OS TC(MIN.) . 10.22 FLOW PROCESS FROH NODE 35.00 TO NODE 35.00 IS CODE > 1 »>»DBSI(aiATE INDEPEHDEHT STREAH POR CQHPLUEHCE««< >»»AND COHPUTE VARIOUS CONFLUENCED STREAH VALUES««< TOTAL NUHBER OF STREAMS « 2 COHFLUEHCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIH.) - 10.22 RAIHFALL IHTENSITY(INCH/HR) > 4.65 TOTAL STREAM AREA (ACRES) - 0.93 PEAK PLOW RATE(CFS) AT COHFLUENCE - 3.14 ** CONFLUENCE DATA *• STREAH RUNOFF To INTENSITY AREA NUHBER (CPS) (MIH.) (IHCH/HOUR) (ACRE) 1 13.09 7.16 5.852 3.96 2 3.14 10.22 4.653 0.93 RAINFALL INTENSITY AND TIME OP CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAHS. •* PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) ,. (HIN.) (INCH/HOUR) 1 15.59 7.16 5.852 2 13.55 10.22 4.653 COHPUTED CONFLUEHCE ESTIHATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) - 15.59 Tc(HIN.) - 7.16 TOTAL AREA(ACRES) • 4.89 **************************************************************************** PLOW PROCESS FROH NODE 35.00 TO NODE 36.00 IS CODE > 3 »>»COHPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »>»USING COMPUTER-ESTIHATED PIPESIZE (NOH-PRESSURE FLOW) <«« DEPTH OF FLOW IH 18.0 IHCH PIPE IS 11.5 IHCHES PIPEFLOW VELOCITY(FEET/SEC.) - 13.0 UPSTREAH HODE ELEVATION - 287.76 DOWNSTREAH NODE ELEVATION - 275.43 FLOWLENGTH(FEET) « 275.99 MANNING'S N - 0.013 ESTIMATED PIPE DIAHETER(IHCH) - 18.00 HUHBER OF PIPES « 1 PIPEFLOW THRU SUBAREA(CFS) - 15.59 TRAVEL TIMB(MIH.) - 0.35 TC(MIH.) - 7.51 **************************************************************************** FLOW PROCESS FROH NODE 36.00 TO NODE 37.00 IS CODE » 3 »>»COMPUTB PIPEFLOW TRAVELTIME THRU SUBAREA«<« »»>USING COMPUTER-ESTIHATED PIPESIZE (NON-PRESSURE FLOW) ««< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DBPTH OP PLOW IN 18.0 INCH PIPE IS 9.4 INCHES PIPEFLOW VELOCITY(FEET/SEC.) • 16.7 UPSTREAM NODE ELEVATION - 275.10 DOWNSTREAH NODE ELEVATIOH - 267.50 FLOWLENGTH(FEET) - 89.28 MANNING'S N - 0.013 ESTIMATED PIPE DIAMETER(IHCH) « 18.00 NUHBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) - 15.59 TRAVEL TIME(MIN.) - 0.09 TC(MIH.) - 7.60 **************************************************************************** FLOW PROCESS FROH HODE 37.00 TO HODE 37.00 IS CODE - 1 »>»DESIGHATE IHDEPEHDENT STREAH FOR CONFLUENCE««< TOTAL HUMBER OF STREAHS - 3 COHFLUENCE VALUES USED FOR INDEPENDENT STREAH 1 ARE: TIHE OF CONCENTRATION(HIN.) - 7.60 RAINFALL IHTENSITY(INCH/HR) - 5.63 TOTAL STREAH AREA(ACRES) • 4.89 PEAK FLOW RATE(CFS) AT CONFLUENCE - 15.59 **************************************************************************** FLOW PROCESS FROH HODE 112.00 TO HODE 113.00 IS CODE - 21 »»>RATIOKAL METHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATIOH IS "D" MULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT » .7000 INITIAL SUBAREA FLOW-LENGTH « 140.00 UPSTREAH ELEVATIOH - 294.10 DOWNSTREAH ELEVATION • 292.70 ELEVATION DIFFERENCE - 1.40 URBAN StJBAREA OVERLAND TIME OP FLOW (MINUTES) » 8.519 100 YEAR RAINFALL INTEHSITY (INCH/HOUR) > 5.231 SUBAREA RUHOFF(CFS) > 0.70 TOTAL AREA(ACRES) » 0.19 TOTAL RUHOFF(CFS) - 0.70 FLOW PROCESS PROM NODE 113.00 TO HODE 10.00 IS CODE - 6 »»>COHPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< UPSTREAM ELEVATION - 292.70 DOWNSTREAM ELEVATI(»I - 272.08 STREET LEHGTH(PEET) > 310.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(FEET) > 12.00 DISTAHCE FROH CROWH TO CROSSFALL GRADEBREAK - 10.50 IHTERIOR STREET CROSSFALL(DECIMAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIHAL) - 0.020 SPECIFIED HUMBER OF HALFSTREETS CARRYIHG RUNOFF - 1 ••TRAVELTIHE COHPUTED USING HEAN FLOW(CFS) - 1.59 STREETFLOW HODEL RESULTS: STREET FLOWDEPTH(FEET) - 0.23 HALPSTREET FLOODWIDTH(PEET) - 5.11 AVERAGE FLOW VELOCITY(FEET/SEC.) - 4.19 PRODUCT OF DEPTH&VELOCITY - 0.96 STREETFLOW TRAVELTIHE(HIH) - 1.23 TC(HIH) - 9.75 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 4.795 SOIL CLASSIFICATION IS "D" HULTI-UHITS DEVELOPHENT RUNOFF COEFFICIEHT - .7000 SUBAREA AREA(ACRES) - 0.53 SUBAREA RUHOFF(CFS) - 1.78 SUMMED AREA(ACRBS) - 0.72 TOTAL RUNOFF(CFS) > 2.47 BND OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(FEET) - 0.25 HALFSTREET FLOODWIDTH(FEET) - 6.42 FLOW VELOCITY(FEET/SEC.) « 4.66 DEPTH'VELOCITY - 1.19 ***•**••*****•*****•*****•***•**••••••*•***••**********•*••*•*•*******•••*•• PLOW PROCESS FROM NODE 10.00 TO NODE 37.00 IS CODE > 3 »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA«<« >»»USIHG COHPUTER-ESTIHATED PIPESIZE (HOH-PRESSURE FLOW) ««< ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 6.2 INCHES PIPEFLOW VELOCITY(PEET/SBC.) - 4.6 UPSTREAH HODE ELEVATION m 267.60 DOWNSTRBAM NODE ELEVATION - 267.50 FLOWLENGTH(FEET) - 10.25 MANNING'S N > 0.013 ESTIMATED PIPE DIAHETER(INCH) > 18.00 NUHBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) - 2.47 TRAVEL TIHE(MIN.) » 0.04 TC(MIN.) » 9.79 ***•****•******•******•*****•••*•*•••••*••••*********••••••*•*••••********•* FLOW PROCESS FROM NODE 37.00 TO NODE 37.00 IS CODE - 1 »»>DESIGNATE INDEPENDENT STREAH FOR CONFLUBNCE««< TOTAL NUHBER OP STREAHS - 3 COHFLUENCE VALUES USED FOR INDEPENDENT STREAH 2 ARE: TIHE OF COHCENTRATI(^(HIN.) - 9.79 RAINFALL INTEHSITY(IHCH/HR) « 4.78 TOTAL STREAH AREA(ACRES) - 0.72 PEAK FLOW RATE(CFS) AT CONFLUEHCE - 2.47 »***•*•**•****•*•*•»*****•***•••***********•****•*»*********•••********•**** FLOW PROCESS FROH HODE 114.00 TO NODE 115.00 IS CODE » 21 >»»RATIONAL HETHOD INITIAL SUBAREA ANALYSIS««< SOIL CLASSIFICATIOH IS "D" HULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA PLOW-LENGTH - 140.00 UPSTREAH ELEVATION - 292.80 DOWNSTREAH ELEVATION - 291.40 BLEVATIC»I DIFPERENCE - 1.40 URBAN SUBAREA OVERLAND TIHE OF FLOW(MINUTES) - 8.519 100 YEAR RAINFALL INTEHSITY(INCH/HOUR) - 5.231 SUBAREA RUNOFF(CFS) - 0.62 TOTAL AREA(ACRES) - 0.17 TOTAL RUNOFF(CPS) - 0.62 *•*•***•••*•*•*»•••••••*••**••*******••**•**••••*•••*********••••••«*****»«« FLOW PROCESS FROM NODE 115.00 TO NODE 11.00 IS CODE > 6 »>»COHPUTE STREETFLOW TRAVELTIHE THRU SUBARBA««< UPSTREAM ELEVATICW > 291.40 DOWNSTREAM ELEVATION - 276.00 STREET LENGTH(FEET) - 300.00 CURB HEIGHT(INCHES) - 6. STREET HALFWIDTH(FEET) - 12.00 DISTANCE FROM CROWN TO CROSSFALL GRADEBREAK » 10.50 IHTERIOR STREET CROSSFALL(DECIHAL) - 0.020 OUTSIDE STREET CROSSFALL(DECIHAL) « 0.020 SPECIFIED HUHBER OF HALFSTREETS CARRYING RUNOFF - 1 **TRAVELTIHB COMPUTED USING HEAN FLOW(CFS) > 1.59 STREETFLOW HODEL RESULTS: STREET FLOWDEPTH(FEET) - 0.23 HALFSTREET FLOODWIDTH(FEET) - 5.11 AVERAGE FLOW VELOCITY(FEET/SEC.) > 4.19 PRODUCT OP DEPTH&VELOCITY « 0.96 STREETFLOW TRAVELTIHE(HIH) - 1.19 TC(HIH) - 9.71 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 4.807 SOIL CLASSIFICATION IS "D" HULTI-UNITS DEVELOPHENT RUNOFF COEFFICIENT - .7000 SUBAREA AREA(ACRES) - 0.58 SUBAREA RUNOFF(CPS) > 1.95 SUHHED AREA(ACRES) • 0.75 TOTAL RUNOFF(CFS) - 2.57 END OF SUBAREA STREETFLOW HYDRAULICS: DEPTH(PEET) '0.27 HALFSTREET FLOODWIDTH(FEET) • 7.08 FLOW VELOCITY(FEET/SEC.) - 4.16 DEPTH'VELOCITY- 1.11 *•••**••**•••••**•**********••••****•******•*****••••**••••*•*•**•••*****••* FLOW PROCESS FROH NODE 11.00 TO HODE 37.00 IS CODE - 3 »»>COHPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USING COHPUTER-ESTIHATED PIPESIZE (HOH-PRESSURE FLOW) ««< ESTIHATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DBPTH OF FLOW IN 18.0 INCH PIPE IS 6.3 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 4.7 UPSTREAM NODE ELEVATION - 267.60 DOWHSTREAM NODE ELEVATION > 267.50 FLOWLENGTH(PEET) - 10.25 MANNING'S N - 0.013 ESTIHATED PIPE DIAHETER(INCH) - 18.00 NUHBER OF PIPES > 1 PIPEFLOW THRU SUBAREA(CFS) - 2.57 TRAVEL TIHE(HIN.) - 0.04 TC(HIN.) • 9.75 •**••**•*••****••*•********«************••**********•**••**«***•*****••**•** FLOW PROCESS FROH HODE 37.00 TO NODE 37.00 IS CODE > 1 »»>DESI6NATE INDEPEHDEHT STREAM FOR COHFLUEHCE<«« »»>AHD COMPUTE VARIOUS COHFLUEHCED STREAH VALUBS<«« TOTAL NUMBER OF STREAMS « 3 (A CONFLUEHCE VALUES USED FOR IHDEPEHDEHT STREAH TIHE OF COHCENTRATION(HIN.) - 9.75 RAINFALL INTENSITY(INCH/HR) > 4.80 TOTAL STREAH AREA(ACRES) - 0.75 PEAK FLOW RATE(CFS) AT CONFLUENCE - 2.57 3 ARE: •• CONFLUENCE DATA ** STREAH NUHBER 1 2 3 RUNOFF (CFS) 15.59 2.47 2.57 Tc (HIN.) 7.60 9.79 9.75 INTENSITY (INCH/HOUR) 5.631 4.783 4.796 AREA (ACRE) 4.89 0.72 0.75 RAINFALL INTENSITY AND TIHE OP CONCEHTRATIOH RATIO COHFLUENCE FORMULA USED FOR 3 STREAMS. ** PEAK PLOW RATE TABLB ** STREAM NUMBER 1 2 3 RUNOFF (CFS) 19.88 18.32 18.28 Tc (MIN.) 7.60 9.75 9.79 INTENSITY (INCH/HOUR) 5.631 4.796 4.783 COMPUTED COHFLUEHCE ESTIMATES ARB AS FOLLOWS: PEAK PLOW RATE(CFS) « 19.88 Tc(MIH.) - TOTAL AREA(ACRES) > 6.36 7.60 **•***********•**•**•*••*•*•***•*•*****•**•*•********•*••******•*••*•******* FLOW PROCESS FROH HODE 37.00 TO HODE 38.00 IS CODE - 3 »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »»>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)«<« ESTIMATED PIPE DIAHETER(IHCH) IHCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 9.4 INCHES PIPEFLOW VELOCITY(FEET/SEC.) - 21.3 UPSTREAH NODE ELEVATION - 257.15 DOWNSTREAH NODE ELEVATIOH - 259.00 FLOWLENGTH(FEET) - 59.60 HANNING'S N ESTIHATED PIPE DIAHETER(INCH) - 18.00 PIPEFLOW THRU SUBAREA(CPS) - 19.88 TRAVEL TIHE(HIN.) - 0.05 TC(HIN.) - 7.65 - 0.013 NUMBER OF PIPES •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••******« FLOW PROCESS FROH NODE 122.00 TO HODE 50.00 IS CODE « 21 »»>RATIOHAL METHOD INITIAL SUBAREA AHALYSIS««< SOIL CLASSIFICATIOH IS "D" MULTI-UHITS DEVELOPMENT RUNOFF COEFFICIENT - .7000 INITIAL SUBAREA FLOW-LENGTH - 170.00 UPSTREAM ELEVATIOH - 313.00 DOWHSTREAH ELEVATIOH > 310.10 ELEVATICW DIFFERENCE - 2.90 URBAN SUBAREA OVERLAND TIHE OP FLOW(HINUTES) 100 YEAR RAINFALL INTEHSITY(IHCH/HOUR) - 5 SUBAREA RUHOFF(CFS) > 0.42 TOTAL AREA(ACRES) • 0.11 TOTAL RUHOFF(CFS) - 7.857 .512 0.42 •***••********•*•*•***•*********•*********•****••****•••*••***•**•********•* FLOW PROCESS FROM NODE 50.00 TO HODE 51.00 IS CODE - 3 Ci »»>COMPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA«<« »>»USIHG COHPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) ««< ESTIHATED PIPE DIAMETER(INCH) INCREASED TO 18.000 DEPTH OF FLOW IN 18.0 INCH PIPE IS 2.5 IHCHES PIPEPLOW VELOCITY(FEET/SEC.) - 2.8 UPSTREAM HODE ELEVATIOH - 303.20 DOWNSTREAH NODE ELEVATION - 302.80 FLOWLENGTH (FEET) - "40.00 HAHHIHG'S N - 0.013 ESTIMATED PIPE DIAMETER(INCH) - 18.00 HUHBER OF PIPES"- 1 PIPEFIOW THRU SUBAREA(CPS) « 0.42 TRAVEL TIHE(MIH.) - 0.24 TC(MIH.) - 8.10 PLOW PROCESS PROM NODE 51.00 TO NODE 51.00 IS CODB - 1 »»>DESIGNATE INDEPEHDEHT STREAH FOR COHFLUEHCE<«« TOTAL HUHBER OF STREAMS • 3 COHFtUEHCE VALUES USED POR INDEPENDENT STREAM 1 ARE: TIME OF COHCEHTRATION(HIH.) - 8.10 RAIHFALL IHTEHSITY(IHCH/HR) . 5.41 TOTAL STREAH AREA(ACRES) - 0.11 PEAK FLOW RATE (CPS) AT CCSIFLUBHCE - 0.42 PLOW PROCESS FROM HODE 123.00 TO HODE 51.00 IS CODE - 21 »»>RATIOHAL METHOD IHITIAL SUBAREA ANALYSIS«<« SOIL CLASSIFICATION IS "D" MULTI-UHITS DEVELOPMENT RUNOFF COEFFICIENT « .7000 INITIAL SUBAREA FLOW-LENGTH - 150.00 UPSTREAM ELEVATION - 313.00 DOWNSTRBAM ELEVATION M 310.10 ELEVATION DIFFBRENCB - 2.90 URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) - 7.079 100 YEAR RAINFALL IHTEHSITY(IHCH/HOUR) - 5.895 SUBAREA RUHOFF(CPS) - 0.37 TOTAL AREA(ACRES) - 0.09 TOTAL RUNOFF(CFS) - 0.37 FLOW PROCESS FROM NODE 51.00 TO NODE 51.00 IS CODB -1 »»>DESIGNATE INDEPENDENT STREAH FOR COHFLUEHCE««< TOTAL NUMBER OF STREAMS - 3 COHFLUEHCE VALUES USED POR IHDEPEHDENT STREAH 2 ARB: TIHE OF COHCEHTRATIOH(HIN.) « 7.08 RAINFALL INTENSITY(INCH/HR) > 5.90 TOTAL STREAM AREA(ACRES) - 0.09 PEAK PLOW RATE(CFS) AT COHFLUENCE - 0.37 ******************************* t»**i,t»1,itttt1,ti,i,tt1,t,t1,1,1n,1,»ttttHH,ttt»1H,»**»1,*1, FLOW PROCESS FROM NODE 200.00 TO NODE 201.00 IS CODB - 21 »»>RATIONAL METHOD INITIAL SUBAREA AHALYSIS<«« SOIL CLASSIFICATION IS "D" COMMERCIAL DEVELOPMEHT RUNOFF COEFFICIENT » .8500 INITIAL SUBAREA PLOW-LENGTH - 120.00 UPSTREAH ELEVATIOH > 313.00 DOWNSTREAH ELEVATIOH - 311.80 ELEVATIOH DIFPERENCE » 1.20 URBAN SUBAREA OVERLAND TIHE OP FLOW(MINUTES) - 4.929 TIHE OP CONCENTRATION ASSUMED AS 6-HINUTES 100 YEAR RAINFALL INTENSITY(INCH/HOUR) - 6.559 SUBAREA RUNOFF(CFS) - 2.12 TOTAL AREA(ACRES) » 0.38 TOTAL RUHOFP(CFS) - 2.12 FLOW PROCESS FROH HODE 201.00 TO HODE 51.00 IS CODE - 3 >»»COHPUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««< »>»USING COHPUTER-ESTIHATED PIPESIZE (NOH-PRESSURE FLOW)««< ESTIHATED PIPE DIAHETER(IHCH) IHCREASED TO 18.000 DBPTH OF FLOW IH 18.0 IHCH PIPE IS 4.5 IHCHES PIPEFLOW VELOCITY(FEET/SEC.) - 6.1 UPSTREAH NODE ELEVATION - 303.50 DOWNSTREAH NODE ELEVATIOH - 302.80 FLOWLENGTH(FEET) - 30.00 HAHHING'S N - 0.013 ESTIHATED PIPE DIAHETER(INCH) - 18.00 NUHBER OF PIPES - 1 PIPEFLOW THRU SUBAREA(CFS) « 2.12 TRAVEL TIME(HIN.) . 0.08 TC(HIH.) - 6.08 FLOW PROCESS FROH HODE 51.00 TO HODE 51.00 IS CODE > 1 >»»DBSIGHATB INDEPENDENT STREAH FOR CONFLUENCE««< »»>AND COHPUTE VARIOUS COHFLUEHCED STREAH VALUBS«<« TOTAL HUMBER OF STREAMS > 3 CONFLUENCE VALUES USED FOR INDEPEHDENT STREAM 3 ARE: TIME OP COHCEHTRATIOH(HIH.) > 6.08 RAIHFALL INTENSITY(INCH/HR) - 6.50 TOTAL STREAH AREA(ACRES) - 0.38 PEAK FLOW RATE(CFS) AT CONFLUENCE - 2.12 •• CONFLUEHCE DATA •• STREAM RUNOFF Tc INTEHSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 0.42 8.10 5.407 0.11 2 0.37 7.08 5.895 0.09 3 2.12 6.08 6.501 0.38 RAINFALL INTENSITY AHD TIME OF COHCENTRATION RATIO CONFLUENCE FORMULA USED POR 3 STREAHS. ** PEAK FLOW RATE TABLE •* STREAH RUNOFF Tc IHTEHSITY HUMBER (CFS) (MIN.) (INCH/HOUR) 1 2.81 6.08 6.501 2 2.68 7.08 5.895 3 2.53 8.10 5.407 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CPS) - 2.81 Tc(HIN.) - 6.08 TOTAL AREA(ACRES) • 0.58 *•**•**••***•***•**•*••••••*••*•*•*«•*•*•*•«•••*******•••*•••*************** FLOW PROCESS FROM NODE 51.00 TO HODE 52.00 IS CODE - 3 »»>COHFUTE PIPEFLOW TRAVELTIHE THRU SUBAREA««:< »»>USIHG COMPUTER-ESTIHATED PIPESIZE (NON-PRESSURE PLOW) «<« ESTIHATED PIPE DIAHETER(INCH) INCREASED TO 18.000 DEPTH OF PLOW IN 18.0 INCH PIPE IS 3.8 IHCHES PIPEFLOW VELOCITY(FEET/SEC.) » 10.4 UPSTREAH HODE ELEVATIOH > 302.80 DOWNSTREAH HODE ELEVATION - 298.60 FLOWLENGTH(FEET) » 50.00 HANNING'S N > 0.013 ESTIHATED PIPE DIAHETER(INCH) - 18.00 HUHBER OP PIPES > 1 PIPEFLOW THRU SUBAREA(CFS) - 2.81 TRAVEL TIHE(HIH.) - 0.08 TC(HIH.) - 6.16 BHD OF STUDY SUMMARY: PEAK FLOW RATE(CFS) • 2.81 Tc(HIH.) - 6.16 TOTAL AREA(ACRES) • 0.58 END OF RATIONAL METHOD ANALYSIS Calavera Hills Village "Y" Hydrology Study HYDRAULIC ANALYSIS System to Calavera Hills Village "X" & System to College Boulevard 18" Storm Drain 100-Year Design Storm cr k.'ta|enM«4IV41M3Ac WA 1*41-41 maimiini Scenario: Storm Drain to Calavera Hills "X" Ci p-7 36 C3 Project Engineer Hunsaker & Associates San Oiego, Inc. h:\stonncad\1941VI1\onsite.stm Hunsakar & Asaoclatas StonnCAD v3.0 [319] 10/18/02 10:31:46 AM O Haestad Methods, Inc. 37 Brookskie Road Watert)ury, CT 06708 USA (203)755-1666 Pagelofi Scenario: Storm D^Vto Calavera Hills "X" Pipe Report Label Upstream Node Downstream Node Total System Fk>w (cfe) Length (ft) Constmcted Stope (ttffl) SecUon Size Mannings n Capacity (cfe) Average Vetodty (ft/s) Upstream Invert Elevatton (ft) Downstream Invert Etovatton (ft) Hydraulto Grade in (ft) Hydraulto Grade Out (ft) P-1 2 3 0.36 72.09 0.013733 18 Inch 0.013 12.31 1.35 304.68 303.69 304.90 304.35 P-11 4 31 2.04 30.50 0.020000 18 inch 0.013 14.85 2.80 303.13 302.52 303.67 303.35 P-2 3 31 3.91 89.06 0.009432 18 Inch 0.013 10.20 4.12 303.36 302.52 304.12 303.35 P-12 5 32 2.90 37.47 0.020016 18 Inch 0.013 14.86 2.88 301.02 300.27 301.67 301.57 P-13 6 32 2.53 103.30 0.009971 18 inch 0.013 10.49 2.68 301.30 300.27 301.90 301.57 P-3 31 32 5.46 154.51 0.012426 18 inch 0.013 11.71 4.14 302.19 300.27 303.09 301.57 P-14 32 J-1 9.58 155.58 0.063054 18 inch 0.013 26.38 5.88 299.94 290.13 301.14 292.64 P-22 7 34 3.78 109.28 0.030655 18 inch 0.013 18.39 3.23 292.75 289.40 293.49 292.31 P-21 J-1 34 9.58 40.00 0.010000 18 inch 0.013 10.50 5.42 289.80 289.40 292.64 292.31 P-17 8 35 3.14 13.46 0.009658 18 Inch 0.013 10.32 1.78 288.22 288.09 290.20 290.19 P-6 34 35 13.09 86.92 0.011275 18 inch 0.013 11.15 7.41 289.07 288.09 291.54 290.19 P-7 35 36 15.59 275.99 0.044676 18 inch 0.013 22.20 8.92 287.76 275.43 289.18 277.28 P-20 11 37 2.57 10.25 0.009756 18 Inch 0.013 10.37 1.45 267.60 267.50 270.02 270.01 P-8 36 37 15.59 89.28 0.085125 18 Inch 0.013 30.65 8.92 275.10 267.50 276.52 270.01 P-19 10 37 2.47 10.25 0.009756 18 inch 0.013 10.37 1.40 267.60 267.50 270.01 270.01 P-9 37 0-1 19.88 59.60 0.136745 18 inch 0.013 38.84 15.76 267.15 259.00 268.62 259.82 h:\stonmcad\l941V4l\onsite.stm 10/18/02 10:41:23 AM Hunsaker & Associates O Haestad Methods, Inc. 37 Brookskie Road Waterbury. CT 06708 USA Project Engineer Hunsaker & Associates San Dlego, Inc. StormCAD v3.0 [31S] (203) 755-1666 Page 1 of 1 ile Scenario: Storm Drain to Caiavera Hills "X" h:\stormcad\1941V41 \onsite.stm 10/18/02 10:35:00 AM Project Engineer Hunsaker & Associates San Dlego, Inc. Hunsakar & Associataa StormCAD v3.0 [31B] e Haestad (Methods, Ina 37 Brookskie Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Label: 32 Rim: 306.22 ft Sump: 299.94 ft Scenario: Storm Drain to Caiavera Hills "X" Label:6 Rim: 305.34 ft Sump: 301.30 ft 306.00 305.00 304.00 303.00 302.00 301.00 300.00 299.00 7+00 7+20 7+40 7+60 7+80 8+00 8+20 Station (ft) Elevation (ft) h:\stonincad\1941V41\onsite.stm 10/18/02 10:35:39 AM Project Engineer Hunsaker & Associates San Diego, Ina Hunaakar ft Asaoclataa StormCAD v3.0 (319] ©Haestad Methods, Int 37 Brookskie Road Waterbury, CT 06708 USA (203)755-1666 Pagelofi • 'file Scenario: Storm Drain to Calavera Hills "X" Label: 35 Rim:293.1 8 ft Sump: 287.76 ft Label: P-17 Up Invert: 288.22 ft Dn Invert: 2 88.09 ft Length: 13.46 ft Size: 18 inch S: 0.009658 ft/ft Label: 8 Rim: 293.31 ft Sump: 288.22 ft 293.50 292.50 291.50 290.50 289.50 288.50 287.50 4+24 4+40 Elevation (ft) h:\stormcadM 941V41 \onsite.stm 10/18/02 10:36:46 AM Station (ft) Hunsaker ft Aaaociataa Project Engineer Hunsaker & Associates San Diego, Inc. StormCAD v3.0 [319] O Haestad Methods, ina 37 Brookskie Road waterbury, CT 06708 USA (203)755-1666 Page 1 of 1 Scenario: Proposed Storm Drain to College Blvd. 50 • P-1 51 P-2 52 -A h:Vstormcad\1941V41\college blvd.stm 10/18/02 10:37:25 AM O Haestad Methods, Inc. Hunaakar ft Aaaociataa 37 Brookskia Road Watert>ury. CT 06708 USA Project Engineer Hunsaker & Associates San Dlego, Inc. StormCAD v3.0 [319] (203) 755-1666 Page 1 of 1 Scenario: Proposed Drain to College Blvd. Pipe Report Label Upstream Node Downstream Node Total System Ftow (cfe) Length (ft) Constmcted Stope m) Sectton Size Mannings n Capacity (cfe) Average Vetodty (ft/s) Upstream Invert Etovatton (ft) Downstream Invert Etovatton (ft) Hydraulto Grade in (ft) Hydraulto Grade Out (ft) P-1 P-2 50 51 51 52 0.42 2.81 40.50 49.47 0.009877 0.078431 18 inch 18 inch 0.013 0.013 10.44 29.42 2.60 3.09 303.55 302.48 303.15 298.60 303.79 303.12 303.36 299.60 h:\storTTicad\1941V41Vcollege blvd.stm 10/18/02 10:39:22 AM Hunsaker ft Aaaociataa O Haestad Methods, ina 37 Brookskie Road watert)ury, CT 06708 USA Prefect Engineer Hunsaker & Associates San Diego, Inc. StormCAD v3.0 [319] (203) 755-1666 Page 1 of 1 Profile Scenario: Proposed Storm Drain to College Blvd. fi 312.00 Label: 52 Rim: 309.3 3 ft Sump: 298.60 ft Label: P-2 Up Invert: 3 02.4 8 ft Dn Invert: 2 98.6 0 ft Length: 49.47 ft Size: 18 incii 8:0.078431 ft/ft Elevation (ft) 304.00 — 302.00 300.00 298.00 0+00 0+20 0+40 0+60 0 + 90 Station (ft) h:\stomicad\1941V41\college blvd.stm 10/18/02 10:40:33 AM O Haestad Methods, Inc. Project Engineer Hunsaker & Associates San Diego, Inc. Hunsakar ft Associataa StonnCAD v3.0 [319] 37 BrooksWe Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 r (A that certain requirements, as set forth in the CODE section, are satisfied. The requirements include that general liability insurance and officers' and directors' liability insurance be can-ied by the Association in specified amounts. The Association shall maintain general liabiiity insurance and officers' and directors' liability insurance in amounts which satisfy the requirements of the CODE to limit the liability of volunteer officers and directors of the Association. (i) Annual Insurance Ravhw. The Board shall review the insurance caried by the Association at least annually, for the purpose of detemiining the amount ofthe insurance referred to in this Article. The Board may obtain a current appraisal of the full replacement value of any improvements owned bythe Association, without deductnn for depreciation, by a qualified appraiser, prior to each annual review. Notwithstanding the requirement for annual review, the Insurance policies carried by the Association shall, to the extent possible, provide for automatic adjustments of coverage levels to reflect the changes in costs resulting from inflation. Q) Additional Insurance. The Association may obtain such additional insurance coverage as its Board deems appropriate, including, but not limited to, coverage of its directors and officers. (k) Owners'Insurance. Itis not intended that the Association insurance policies cover any Lot and each Owner is responsible to obtain his or her own casualty and general liability insurance covering his or her Lot. Each Owner shall obtain and maintain, at his or her own expense, fire insurance coverage as may be required by the Owner's instituttonal Mortgagee or, if no institutbnal Mortgage encumbers the Lot, fire insurance in an amount not less than the replacement cost ofthe structure. (I) insurance Po//cyDediicf/Z)/e. In the event any insurance policy deductible amount relating to an Owner's property toss is charged to the Association, the Owner shall reimburse the Association upon written demand for the amount charged to the Association. Section 9.2. Condemnation. In the event the Common Area or any portion thereof shall be taken for public purposes by condemnation as a resultof any action or proceeding in eminentdomain, or shall be transferred in lieu of condemnatton to any authority entitled to exercise the power of eminent domain, then the award or consideration for such taking or transfer shall be paid to and belong to the Association. ARTICLE X MAINTENANCE RESPONSIBILITIES Section 10.1. Parties Responsible for Maintenance of Common Area and Association Maintenance Area. The foltowing parties shall be responsible to maintain the Common Area and Association Maintenance Area: (a) Initially Declarant or a Guest Builder shall be solely responsible to maintain the Common Area and the Association Maintenance Area. (b) Unless the deed of conveyance or a maintenance agreement between Declarant or a Guest Builder and the Association states otherwise, the Association shall become obligated to maintain the Common Area and Association Maintenance Area within a Phase upon the first close of escrow forthe sato of a Lot within the Phase to a Retail Purchaser. The Common Area and Association Maintenance Area within a Phase shall refer to those porttons of the Common Area and Association Maintenance Area whtoh are toentified as being within such Phase by the Declaration of Annexatton or the deed of conveyance. The Associatton Maintenance Area in a Phase may inciude areas within public rights-of-way such as medians and parkways or other off-site areas. Declarant or a Guest Builder and the Association may enter into one or more maintenance agreements in form and content acceptabto to the California Department of Real Estate whereby Common Area or Association Maintenance Area maintenance or the costs of maintenance of the Common Area is shared between Declarantor a Guest Builderand the Association forthe term setforth in suchagreement(s). It is not intended M7/03 -24-045600.0103 137D91.3 that the Associatton be obligated to share in any such costs until conveyance of the first Lot within a Phase to a Retail Purchaser. Section 10.2. Association Maintenance. The Association shall maintain or caused to be maintained allCommon Area and Association Maintenance Area in good repair and appearance as set forth in the Declaration and in accordance with any applicable requirements. The Association shall not relinquish its obligatton to maintain the Common Area or Association Maintenance Area without the prior consent ofthe Planning Commission or City Council of the City. (a) The Association shall keep and maintain the Common Area and the Association Maintenance Area, and all improvements thereon, in good condition and good appearance at all times. For example, and not by way of limitatton, the Association shall be responsible to maintain any terrace drain or other drainage improvement that is located within Association Maintenance Area or Common Area. (b) The Associatton shall provide landscaping, pruning and gardening property to maintain and pertodically replace when necessarythe trees, plants, grass and other vegetation origi- nally placed in areas it is obligated to maintain and to remove trash and debris from the Common Area and Association Maintenance Area. The Association shall take such maintenance acttons as are necessary to avoid erosion and to assure proper drainage of all areas it is obligated to maintain. The Association in its maintenance activities shall comply with any City (and any other applicable governmental) standards, requirements or restrictions which are applicable to the Project, including any City bmsh removal requirements and the City Landscape Guidelines and Irigatton Standards. All landscaping within the Common Area and Associatton Maintenance Area shall be maintained in a healthy and thriving condition, free from weeds, trash and debris and shall be maintained at least to the standards set by the City. Notwithstanding the foregoing, the Association shall at all times complywith any City open space regulattons or other applicabte restrictions pertaining to the Common Area or Associatton Maintenance Area. (c) The Association shall perform regular maintenance and repairs as required to Cost Center Amenities located within the Common Area or Association Maintenance Area. Cost Center Area amenities may include, but are not limited to, swimming pools, restrooms and spa. (d) The Association shall monitor and controlthe encroachmentof invasive and exotic weeds into native coastal sage scrub and chaparral habitat con-idors. Such weeds shall be controltod both on the periphery of native corridors and in native revegetation and Fire Suppression Zones. The Association shall promptly eradicate invasive plants from such areas in order to preserve the growth of native plants (e.g., coastal sage scrub and chaparral). (e) The Association shall properly keep and maintain any detention basins within the Common Area or Association Maintenance Area in accordance with all applicabto requirements of the City and all other govemmental agenctos having jurisdiction. (f) Notwithstanding any vote of its Members to the contrary, the Association shall be obligated to maintain each public area (e.g., pari<way) designated by Declarant in this Declaration, a Declaration of Annexation or other recorded document to the tovel of maintenance at toast equal to the level of m aintenance perform ed by the City or imposed by the City on othersimilar public areas. However, maintenance of any such public area bythe Association fs subject to the City aRowIng such maintenance. Commencing on the date the Association's regular assessments commence against the Lots in Phase 1, the Association shall maintain the landscaping within the public right-of-way areas shown on Exhibit "B" attached hereto. Section 10.3. Owner Maintenance. Each Owner shallatalltimes keep and maintain ina clean, safe and attractive condition all porttons of his or her Lot and improvements thereon (except for any portion the maintenance of which is the responsibility of the Association, the City or an assessment district). -25-045800-0103 137091.3 (a) The improvements to be so maintained by each Owner include, but are not limited to, all portions ofthe residence, garage, the garage opener, lights on the residence, the landscaping, any fence or wall located on the Lot, any street tree located on the Lot, and the landscaping, any street tree and all improvements within the public right-of-way between any sidewalk adjacent to the Owner's yard and a public street (other than any portion which is within the Common Area or Association Maintenance Area or which is maintained by the Cityor an assessment district). (b) Each Owner of a Lot shall water, weed, maintain and care for the landscaping located on his or her Lot (other than any portion which is within the Common Area or Association Maintenance Area or which is maintained by the City or an assessment district) so that the same is at all times in a healthy, thriving and attractive condition, free from weeds, trash and debris. (c) The Association Maintenance Area may include landscape maintenance, but not irrigatton, of parkways and certain stopes on Lots. The Owner of each such Lot shall be responsible for irrigating any such areas in accordance with a schedule adopted by the Association. (d) As provkled in Section 8.20 above (entittod "Common Walls and Fences"), each Owner shall be responsible to maintain the interior surface of any fence or wall which separates the Owner's Lot from another Lot and both adjoining Owners shall be responsible to share equitably in the costs to repair or replace any such fence or wall which separates their Lots. However, an Owner shall not be responsible for the costs to repair or replace a fence which is damaged by the other Owner. (e) Each Owner shall be responsible to maintain any tenrace drain, brow ditch or other drainage improvement which is tocated on such Owner's Lot unless the same lies within Association Maintenance Area. All such drainage improvements shall be kept free and ctoar of debris and obstmcttons. (f) Each Owner shall remove all rubbish, trash, garbage, weeds, debris and other waste material from such Owner's Lot. (g) No Owner shall interfere with or damage the Common Area or Association Maintenance Area, improve or alter the Common Area or Associatton Maintenance Area, or interfere with or impede Declarant, Guest Builders, the Association ora public maintenance assessment district in connectton with the maintenance of the Common Area or Association Maintenance Area. Section 10.4. Association's Right to Repair Neglected Lots and Right to Enter. In the event that any Owner shall In the Board's opinion permit any property which is the responsibility of such Owner to maintain to fall into a dangerous, unsafe, unsightly or unattractive condition as detemiined by the Board, then the Board shall have the right to demand that such condition be remedied. Should the condition not be remedied within fifteen (15) days, the Board shall have the right, but notthe obligation, to conrect the condition, and to enter upon the portion ofthe Project which has fallen into such conditton for the purpose of doing so. Further, ifan Owner fails or refuses to provide irrigation to landscaping within Association Maintenance Area on his or her Lot whtoh it is the Owner's obfigation to provkJe in accordance with the irrigation schedule established by the Associatton, the Board shall have the right, but notthe obligation, upon fifteen (15) days' prior written nottoe, to enter upon the Owner's Lot for purposes of con-ecting such conditton. The Owner shall promptly reimburse the Association for the cost of all corrective action, including, but not limited to, the Association's court costs and reasonable attorne/s fees should the Board deterrnine it is in its best interests toobtainacourtorderaltowing such entrance bythe Board's representetives. No entry inskle a residence may be made without the consent of the Owner. Section 10.5. Citv's Rights If Association Falls To Maintain. In the event the Association fails to maintain all or any portton of the Common Area or Association Maintenance Area in accordance with this Artcle, the City shall have the right, but not the duty, to perform the necessary maintenance. Ifthe City elects to perform such maintenance, the City shall give written nottoe to the Association, with a copy thereof to the Owners, setting forth with particularity the maintenance which the City finds to be required and requesting the same to be carried out bythe Association wKhin a pertod of thirty (30) days from the giving of such notice. In 5/27/03 -26- 045600.0103137091.3 the event the Association foils to can-y out such maintenance within the pertod specified by the City's notice, the City shall be entitled to cause such work to be completed and shall be entitled to reimbursement with respect thereto from the Owners as provided in Section 4.15 above. Section 10.6. Maintenance of Walls and Fences Separating Common Area or Association Maintenance Area From Lots. Unless a Deciaratton of Annexation or deed oreasement signed by Declarant states otherwise, the following provisions shall apply with respect to fences or walls designated as being fences or walls whtoh are located within the Association Maintenance Area or which are located within Common Area and which separate the Associatton Maintenance Area or Common Area from an adjoining Lot: (a) Sound Walls. The Associatton shall be responsible to maintein the exterior surfoce and to repair and replace the structure of any sound wall, including any glass portion thereof; provided, however, the Association shall not be obligated to clean the exterior surface of glass more frequently than once per calendar quarter. The Owner of the Lot on which the sound wall is located shall maintain the intertor surfoces of the sound wall that face the Owner's residence, including the interior surface of any glass portion thereof. (b) Solld Masonry IVa/Zs. The Association shall be responsible to remove graffiti from the exterior surface of solid masonry walls. The Owner of the Lot on which the solid masonry wall is located shall be responsible for all other maintenance of such wall, including repair and replacement of the waifs structure. (c) Open Fencing. The Owner ofthe adjoining Lot shall repair, replace and maintain the structure and all surfaces of any open fencing (e.g., "split rail fences" or open metal fences). Section 10.7. Reclaimed Water. It is currently intended thatthe Association will use reclaimed water for u-rigatton purposes. Where the areas being in-igated are slopes, it is possibto that reclaimed water will flow into the yards of those Lots adjoining the toe ofa slope. Reclaimed water is not poteble and should not be consumed by people or animals. Reclaimed water may cause discoloring of fences or walls. Section 10.8. Flre Suppression. (a) Location of Flre Suppression Zones. The approximate locations of Fire Suppresston Zones within the Properties are depicted on Exhibit "D" atteched hereto. (b) Modified Flre Suppression Zones. The Fire Suppression Requirements provkle for modified Fire Suppression Zones on portions of Lots 1 through 22, inclusive, of CARLSBAD TRACT NO. 01-02 CALAVERA HILLS VILLAGE K and Lots 27 through 43. inclusive, of CARLSBAD TRACT NO. 01-06 CALAVERA HILLS VILLAGE X (the 'Modified Flre Suppression Zone Lots'). The Fire Suppression Requirements for the Modiftod Fire Suppression Zone Lots permit the width of a modified Fire Suppresston Zone 1 or 2 to be greater or less than twenty feet (20') as long as the combined width of modified Fire Suppression Zones 1 and 2 is forty feet (40'). The Calavera Hills Master Plan (MP-150(H)) conteins requirements for structures and landscaping on the Modified Fire Suppresston Zone Lots, including without limitatton, requirements for use of exterior fh-e resistive buikling materials. All landscaping and any modificatton, constructton or reconstructton of improvements on the Modiftod Fire Suppression Zone Lots shall comply with all applicable City requirements, including those set forth in the Calavera Hills Master Plan (MP-150(H)). (c) Maintenance by Owners. Each Owner of a Lot on which a Fire Suppression Zone is located shall maintein his or her Lot in accordance with the Fire Suppression Requirements and the Calavera Hills Master Pian (MP-150(H)). Brush clearance required by the Fire Suppresston Requirements may change the character and appearance of the Project, and neither Declarant nor Guest Buikiers shall be liable to any Owner for woric performed in compliance with the Fire Suppresston Requirements. There is no guarantee or assurance that compliance with the Fire Suppression Requirements will prevent damage or destruction by fire. 5/27/03 -27- 045600^)103137091.3 (d) Maintenance by Association. The Association shall perform or cause to be performed brush management annually by May 15 of each year, in strict compliance with the Fire Suppression Requirements, and shall comply with all other applicable requirements of the Fire Suppresston Requirements. (e) Restf/cHons.To reduce fire hazards, constmction, improvements and vegetation within Fire Suppresston Zones are restrfcted. Each Owner of a Loton which a Fire Suppresston Zone is located shall at all times comply with the appltoable Fire Suppression Requirements. The Association shall atall times complywith the appltoable Fire Suppresston Requirements with respect to any Common Area or Association Maintenance Area on whtoh a Fire Suppresston Zone is located. For example, as of the date of this Declaration, the modified Fire Suppresston Zone 1 on Modiffed Fire Suppression Zone Lots is a non-combustible fire zone. No com bustible structures, fences, trees, shrubs, or anything whatsoever of a combustible nature may be constructed, placed or stored within the modified Fire Suppresston Zone 1 area; only fire reterdant plants are pennitted in such area. Exhibit "E" atteched hereto describes certain requirements and restrictions that are, as ofthe date of this Declaration, applicable to Fire Suppression Zones. (Exhibit "E" refers to modified Fire Suppresston Zones 1, 2 and 3 as Zones C-1, C-2 and C-3, respectively.) The requirements set forth on Exhibit "E" are subject to change by the City from time to time. This Subsection (e) shall not be amended without the prior written consent of the City, as provkled in Section 13.3 betow. Section 10.9. Maintenance Manuals. DeclarantorGuestBuildersmayprovidetheir respective original purchasers and/or the Association with manuals ("Maintenance M anuais") whtoh outiine Declarant's, the Guest Builder's or manufacturers' recommended homeowner and/or Association maintenance obligations and schedules. (a) Each Owner who receives a Maintenance Manual shall provide the same to any purchaser or other transferee of his or her Lot. (b) The Association shall keep and make available to any Owner the Maintenance Manual(s) provided by Declarant or a Guest Bulkier (including any Maintenance Manual whtoh pertains to Association or Owner maintenance). The Association shall have the rightto require an Owner to reimburse the Association for its coste of copying any such Maintenance Manual which the Association provides to an Owner. (c) The Association and each Owner, respectively, shall follow the recommendattons set forth in the applicable Maintenance Manual provkled by Declarantor a Guest Builder, as the same may be updated from time to time. Section 10.10. Mold: Mildew. The Association, with respect to the Common Area and Association Maintenance Area, and each Owner, with respect to his or her Lot, shall take all reasonable and appropriate steps to prevent condittons that may cause mold or mildew to devetop, including foltowing any recommendattons contained in the Maintenance Manual or in any appHcable publications ofthe California Department of Health Services ('DHS') or the United States Environmental Protection Agency ('EPA"). As of the date of this Declaration, the EPA and DHS have Web sites that contain information and publications regarding mold and other biologtoal polutents. For example, see "Btologfcal Pollutents in Your Home' and 'Mold Resources" on the EPA Web site (http://www.epa.gov); and "Indoor Air Quality Info Sheet: Mold in My Home: What Do I Do" on the DHS Web site (http://www.dhs.ca.gpv). An Owner shall promptly report to the Association any evidence the Owner may discover of moisture accumulation or mold in the Project. Section 10.11. Owner Responsible for Damaoes If Falls to Maintain. Any Owner who fails to fulfill his or her maintenance obligattons or to follow the maintenance recommendattons for his or her Lot or residence set forth in a Maintenance Manual shall be responsible for any damage which results to his or her Lot or residence, the Common Area, the Association Maintenance Area or any other Lot. 5^„g3 -28- 045600.0103137091.3 (i Section 10.12. Limitation on Liability of Association's Directors and Officers. (a) Claims Regarding Breach of Duty. No director or officer of the Association shall be personally liable to any of the Association's members, or to any other person, for any error or omission in the discharge of their duties and responsibilities or for their failure to provide any servtoes required hereunder or underthe Bylaws, provkled that such director or officer acted in good faith, in a manner that such a person believes to be in the best interest of the Association and with such care, including reasonabto inquiry, as an ordinary prudent person in a like position would use undersimilar circumstances. Without limiting the generality ofthe foregoing, this stendard of care and limitetion of Ilability shall extend to matters including, but not limited to, the repair and maintenance of Common Area and Association Maintenance Area.. (b) Other Claims Involving Tortious Acts and Property Damage. No director or offtoer of the Association shall be responsible to any Owner or any member of its family or tenants, guests, servante, employees, Itoensees, invitees, or any other person for any loss or damage suffered by reason of theft or othenvise of any articte, vehicle or other item of personal property whtoh may be stored by such Owner or other person on or within any Lot or for any injury to or death of any person or loss or damage to the property of any other person caused by fire, exptosion, the elements or any other Owner or person within the Project, or by any other cause, unless the same is attributable to his or her own willful or wanton act of gross negligence. It is the intent of this section to provkle volunteer directors and officers with protection from liability to the full extent permitted by California CIVIL CODE Section 1365.7, or comparable superseding statute, and to the extent this provision is inconsistent with said section, the CIVIL CODE shall prevail. Section 10.13. Indemnification of Association. Each Owner, personally and for its fam iiy members, contract purchasers, tenante, gueste and invitees, agrees to indemnify each and everyotherOwner and the Associatton, and to hoto harmless such Owners and the Association from, and to defend him against, any claim of personal injury or property damage occurring within the resWence or Lot of that Owner arising out of the failure of the Owner to maintein the Lot as set forth herein, except where another Owner's or the Association's negligence or willful misconduct is the sote and exclusive causeof any claim, demand or cause of action. ARTICLE XI ANNEXATION Section 11.1. By Association. Addittonal resklential property, Common Area and Associatton Maintenance Area may be annexed to the Project and to the Declaration upon the vote or written assent of two-thirds (2/3) of the voting power of Members of the Association, excluding the vote of Declarant Upon approval by Members of the Association, the owner of the property wishing it to be annexed m ay fite of record a Notice of Declaration of Annexation which shall extend the provisions of this Deciaratton to the property being annexed. Section 11.2. Bv Declarant. Additionai land within the Annexable Property may be annexed to the Project as Lots, Common Area and Associatton Maintenance Area and to the Jurisdiction ofthe Associa- tton by Declarant Annexation shall be made by a Deciaratton of Annexation executed by Declarant and the owner of the land being annexed. The Declaration of Annexation may be revoked or amended at any time before the first close of sale of a Lot in the annexed property and may contain addittonal or different restrictions appltoable to the annexed property. The obligation of Lot Owners to pay dues to the Association and the right of such Lot Owners to exercise voting rights in the Assoctetton in such annexed property shall not commence until the first day of the month following close of the first sale of a Lot by Declarant in that particular Phase of development Any Phase or portion thereof may be deannexed by Declarant signing and recording with the County Recorder ofthe County a Notice of Deannexation which describes the tend to be de-annexed provided that no Lot within the Phase has been conveyed to an Owner (other than between Declarante or to a successive Declarant). 5^^,j3 -29- 045800.0103137091.3 Calavera Hills H Resource Agency Permits Regional Water Quality Control Board Order No. R98-2002-0014 Waste Discharge Requirements and Section 401Certification Dated February 13,2002 Fish and Wildlife Service Biological Opinion-Section 7 FWS Consultation No. FWS-SDG-1597.4 Dated March 14,2002 Department of Army-Section 404 Permit No. 200100215-RLK Dated May 15,2002 Department of Fish and Game Streambed Alteration Agreement Pursuant to Section 1601 of California Fish and Game Code #R5-2001-00074 Dated June 3,2002 [ California Regional Water Quality Control Board San Diego Region Inston H. Hiclua Secretary for Environmental Protection Intemet Address: littp://www.swicb.ca.gov/-rwqcl>9/ 9174 Sky Park Court, Suite 100. San Diego, CaBfomia 92123 Pljone (858) 467-2952 • FAX (858) 571-6972 Gray Davij Governor 4 I i I I February 14,2002 Mr. Brian Milich McMillin Companies 2727 Hoover Ave. National City, CA 91950 Mr. David Hauser CityofCarlsbad 1635 Faraday Avenue Carlsbad, CA 92008-7314 Dear Mr. Milich and Mr. Hauser: In Reply Refer to: 401: OOC-135 SLB RE: ORDER NO. R9.2002.0014, WASTE DISCHARGE REQUIREMENTS AND SECTION 401 WATER QUALITY CERTIFICATION FOR CALAVERA HILLS E, LLC AND CITY OF CARLSBAD, CALAVERA HILLS MASTER PLAN PHASE IL BRIDGE AND THOROUGHFARE DISTRICT NO. 4, AND DETENTION BASINS Enclosed please fmd a copy of Order No. R9-2002-0014, which the Regional Board adopted at their regularly scheduled Februaiy 13,2002 meeting. If you have any questions regarding the above, please contact Ms. Stacey Baczkowski at (858)637-5594. Respectfully, )HNH. ROBERTUS 'Executive Officer Enclosure: Order No. R9-2002-0014 Califomia Environmental Protection Agency Mr. Milich and Mr. Hauser -2- February 14.2002 DISTRIBUTION Ms. Shannon Bryant U.S. Army Corps of Engineers San Diego Field Office 16885 West Bemardo Drive, Suite 300A San Diego, CA 92127 Ms. Tamara Spear Califomia Department of Fish and Game South Coast Region 4949 Viewridge Avenue San Diego, CA 92123 Nfr. John Martin U.S. Fish and Wildlife Service 2730 Loker Avenue West Carlsbad, CA 92008 Calfornia Environmental Protection Agency CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION ERRATA SHEET NO.l FOR ORDER NO. R9-2002-0014 WASTE DISCHARGE REQUIREMENTS AND SECTION 401 WATER QUALITY CERTIFICATION FOR CALAVERA HILLS II, LLC AND CITY OF CARLSBAD CALAVERA HILLS MASTER PLAN PHASE II & BRIDGE AND THOROUGHFARE DISTRICT NO. 4 & DETENTION BASINS SANDIEGO COUNTY The following changes were made at the request of the applicants. Deletions are indicated by strike-outs and additions are indicated by underlines. Finding No. 1 McMillin CompaniooCalavera Hills. LLC and the City of Carlsbad (hereinafter discharger) submitted an application for 401 Water Quahty Certification on December 4,2000, and an Application/Report of Waste Discharge on September 12,2001. The discharger proposes to construct 781 residential units and associated infrastracture, extend College Boulevaid and Cannon Road, and constract two detention basins within the City of Carlsbad, Califomia. Finding No. 3 To mitigate for the permanent and temporarv fill of 3.77 acres of waters of the United States and State, the discharger will create a total of 44^610.7 acres of southem willow scrab adjacent to Calavera and Little Encinas Creeks. Finding No. 4 The proposed Habitat Restoration and Monitoring Plan (RECON; Octobor 26.3001Januarv 10. 2002) will adequately compensate for impacts to waters ofthe U.S. and State associated with the discharge of fill material. IT IS HEREBY ORDERED that McMillin CompaniooCalavera Hills. LLC and the City of Carlsbad (hereinafter, discharger), in order to meet the provisions contained in Division 7 of the Califomia Water Code and regulations adopted thereunder, shall comply with the following: Errata Sheet No. 1 for Order R9-2002-0014 Provision Bl The discharger shall develop a Final Mitigation and Monitoring Plan for Regional Board approval, that shall be consistent with the Habitat Restoration and Monitoring Plan (RECON; notnhor 26.2001Januarv 10.2002). and shall achieve the following performance standards: | Provision B2 a. Proposed channel designs and earthwork for all mitigation areas, including appropriate cross sections and plan views; b. A detailed planting plan, including species lists, plant sizes and numbers, and planting designs; c. An irrigation plan; d. Specific details and plans for all creek sections that will be culverted, bridged, or otherwise crossed or immediately adjoined by paths, stractures, or similar improvements; e. Signage and barrier designs (as shown in Attachment 1) adequate to prevent intmsion by golforo, golf carts, and other human intmoion into all creeks and oreek buffer zones; f. Specific details regarding hydrologic and biogeochemical monitoring, including sample locations, periodicity, and qualitative and quantitative indicators; and g. All other infonnation, as appropriate. Provision B9 The discharger shall provide certification that personnel have been trained on the provisions and prohibitions of this order as well as the management responsibilities detailed in the Habitat Restoration and Monitoring Plan (RECON; Octobor 26.20QlJanuarv 10.2002). | Provision C8 The maintained portions of dPetention basins BJ and BJB shall not be counted towards | mitigation credit for impacts to waters of the U.S. and State, and shall be maintained in accoidance with the conditions specified in Attachment 1, or in a inanner that provides equivalent protection. Attachment 1 The following headings were added to the table (fiom left to right): Village or Road Segment; Post Constraction BMP; BMP Maintenance; Maintenance Responsibility; Anticipated Pollutants: and Anticipated BMP Efficiency. The tfiird column on Attachment 1 on the Basin BJB row (last page of the table) was changed to ".. .and outlet as needed downstream of outlet pipe from College Boulevard." The last low refers to Basin BJB and was changed to identify Basin BJ. i CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION ORDER NO. R9-2002-0014 WASTE DISCHARGE REQUIREMENTS AND SECTION 401 WATER QUALITY CERTIFICATION FOR CALAVERA HILLS H, LLC AND CITY OF CARLSBAD CALAVERA HILLS MASTER PLAN PHASE II & BRIDGE AND THOROUGHFARE DISTRICT NO. 4 & DETENTION BASINS SANDIEGO COUNTY The Califomia Regional Water Quality Control Board, San Diego Region (hereinafter Regional Board) finds that: 1. McMillin Companies and the City of Carlsbad (hereinafter discharger) submitted an application for 401 Water Quality Certification on December 4,2000, and an Application/Report of Waste Discharge on September 12,2001. The discharger proposes to constract 781 residential units and associated infi:astracture, extend College Boulevanl and Cannon Road, and constract two detention basins within the City of Carlsbad, Califomia. 2. The project will result in the discharge of waste, defined as the placement of fill material (e.g., soil, riprap, culverts), into 3.7 acres of waters ofthe United States, and an additional 0.07 acre of waters of the State, including Calavera Creek, Agua Hedionda Creek, Little Encinas Creek, and unnamed vegetated and unvegetated waters of the U.S. The project's direct impacts (in acres) are as follows: Master Plan Development Cannon Road Colleee Boulevard Habitat Type-* Pom Temp. Perm. Temp. Perm. Temp. Total Alkali Marsh 0.1 0.6 0.07 0.77 Riparian Scrub 0.2 0.03 0.3 0.02 0.55 (vah or sws) Sycamofe Woodland 0.6 0.12 1.3 0.15 2.17 Unvegetated waters 0.2 0.01 0.21 Total 0.3 0.01 1.4 0.22 1.6 0.17 3.7 *' mfe = mule fat scrub; sm = southem willow scrub To mitigate for the pennanent fill of 3.77 acres of waters of the United States and State, the discharger will create a total of 11.6 acres of southem willow scrab adjacent to Calavera and Order R9-2002-0014 little Encinas Creeks. 4. The proposed Habitat Restoration and Monitoring Plan (RECON; October 26,2001) will adequately compensate for impacts to waters of the U.S. and State associated with the discharge of fill material. 5. The pioject may indirectly impact beneficial uses of waters of the U.S. and State through the discharge of urban ranoff pollutants (e.g., oil and grease, heavy metals, pathogens, nutrients, etc.) fiom the proposed development. 6. The discharger has developed a Summary Storm Water Pollution Prevention Plan (O'Day Consultants; August 2001) that identifies constraction and post-constraction Best Management Practices (BMPs). Post-constraction BMPs identified in the plan include: a. Creation of detention basins that will be used during constraction and will remain in place as post-constraction BMPs to receive uiban ranoff; b. Grass-lined swales around individual house pads; c. Routine street sweeping by the City of Carlsbad; d. Storm drmn inlet filters; and e. Constraction of pollution basins (e.g., treatment wetland). More specific BMPs are provided in Attachment 1 to this Order. 7. This Older specifies Waste Discharge Requirements (WDRs) that are necessary to adequately address impacts to water quality standards resulting from the filling of waters of the U.S., to meet the objectives of the State Wetlands Conservation Policy (Executive Order W-59-93), and to accommodate and require appropriate changes over implementation of the pioject and its construction. 8. The Comprehensive Water Quality Control Plan for the San Diego Basin (9) (Basin Plan) was adopted by the Regional Boaid on March 17,1975. Subsequent revisions to the Basin Plan have also been adopted by this Regional Board and approved by the State Board. The Basin Plan designates beneficial uses, narrative and numerical water quality objectives, and prohibitions which are applicable to the discharges regulated under this Order. The project, as de^bed in this Order, will not result in State Water Quality Standards being exceeded. 9. The discharger has avoided and minimized impacts to wateis of the U.S. consistent with the requirements of the Basin Plan. 10. The City of Carlsbad prepared an Environmental Impact Report (EIR) pursuant to the Califomia Environmental Quality Act and was certified on January 15,2002. The EIR identified the following mitigation measures to reduce project impacts to water quality below a level of significance: Order R9-2002-0014 a. Comply with State Water Resources Control Boaid Water Quality Order No 99-08- DWQ, the NPDES General Pennit for Stonn Water Discharges Associated with Constiuction Activity; b. Comply with the Municipal Stonn Water Peraiit (NPDES No. CAS0108758)- c. Comply with the City of Carlsbad procedures; d. Create desiltation basins where necessary to minimize erosion and prevent sediment ti^msport, until tiie stonn drain system is in place and stieets are paved; e. Landscape all exposed, manufactured slopes per City of Carlsbad erosion control standards; and f. Phase grading operations and slope landscaping to reduce die susceptibiUty of slopes to erosion; and control sediment production fi-om graded building pads witfi low perimeter benns, desiltation basins, jute matting, sandbags, bladed ditches, or otfier appropriate methods. 11. The Boaid has notified tfie U.S. Anny Coips of Engineer, U.S. Fish and WildUfe Seivice Califomia Department of Fish and Game, and interested agencies and persons of its intent'to prescnbe WDRs and Section 401 Water QuaUty Certification for tfiis discharge. 12. The Board, in a pubUc meeting, heard and considered all comments pertaining to tfie discharge. rr IS HEREBY ORDERED tfiat McMillin Companies and tfie City of Carlsbad (hereinafter discharger), m order to meet tfie provisions contained in Division 7 of tfie Califomia Water Code and regulations adopted tfiereunder, shall comply witfi tfie following: A. PROHIBITIONS 1. The discharge of fill material in a manner otfier tfian as described in tfie findings of tfiis Older IS prohibited unless tfie discharger obtains revised waste discharge requirements tfiat provide for tfie proposed change. if ^ 2. The discharge of fill material and otfier waste shall not create a pollution, contamination or nuisance, as defined by Section 13050 of tfie Califomia Water Code B MITIGATION PROVISIONS 1. The dischatger shall develop a Final Mitigation and Monitoring Plan for Regional Board approval, tfiat shall be consistent witfi tfie Habitat Restoration and Monitoring Plan (RECON; October 26,2001), and shall achieve tfie following perfonnance standaids: a. Tiie created and restored areas must posses tfie tfiree criteria (wetiand hydrology hydrophytic vegetation, and hydric soils) necessary to be delineated as a Corps * jurisdictional area; b. All sites must exhibit signs or evidence of wildUfe use for two consecutive monitoring periods; Order R9-2002-0014 c. All sites must be self-sustaining; and d. All sites must exhibit evidence of natural recmitment of native wetiand and/or riparian species. 2. The Final Habitat Restoration and Monitoring Plan shall include, but not be Umited to, the following: a. Proposed channel designs and earthwork for all mitigation areas, including ' appropriate cross sections and plan views; b. A detailed planting plan, including species Usts, plant sizes and numbers, and planting designs; c. An irrigation plan; d. Specific details and plans for all creek sections that will be culverted, bridged, or otherwise crossed or immediately adjoined by paths, stractures, or similar improvements; e. Signage and banier designs (as shown in Attachment 1) adequate to prevent intrasion by golfers, golf carts, and other human intrasion into all creeks and creek buffer zones; f. Specific details regarding hydrologic and biogeochemical monitoring, including sample locations, periodicity, and qualitative and quantitative indicators; and g. All other infonnation, as appropriate. 3. Implementation of mitigation shall provide the following functional gains: a. Habitat function - Creation of stracturaUy and spatially diverse habitat surrounding riparian areas wiU provide nesting and foraging grounds for birds, amphibians, and other wildUfe. b. Biogeochemical/water quaUty functions - Expansion of wetiand areas shall increase areas for natural water quaUty functions, such as microbial action that removes toxins, nitrogen, and ofher nutrients fiom runoff. c. Hydrologic functions - Expansion of wetiand areas wiU allow greater flood flow attenuation, energy dissipation, and storage during storm events. 4. Not later than 30 days prior to the beginning of grading, the discharger shall submit, acceptable to the Regional Board, the Final Habitat Restoration and Monitoring Plan. 5. The discharger shall implement the Final Wetiand and Riparian Mitigation and Monitoring Plan as approved by the Regional Board. The final plan shall be consistent with the draft plan included as Attachment 2 to this Order. 6. Implementation of the Final Mitigation and Monitoring Plan shall be completed within the same calendar year as impacts occur, or at least no later than 9 months following the close of the calendar year in which impacts first occur (e.g., if impacts occur in June 2001, constraction of mitigation for all impacts must be completed no later than September 2002). Order R9-2002-0014 7. No later than 30 days prior to the beginning of clearing, grabbing, and/or grading, the discharger shall submit, acceptable to the Regional Board, the name(s) and qualification(s) of the qualified biologist(s) (defined as possessing a college degree in the biological sciences and at least 5 years restoration experience in southem Califomia) responsible for compliance with the certification requirements, as discussed in the above provisions. 8. If mitigation areas do not meet their interim and/or ultimate success criteria, as defined in the draft Habitat restoration and Monitoring Plan, the discharger shall prepare, acceptable to the Regional Board, remedial measures to be implemented. 9. The discharger shall provide certification that personnel have been trained on the provisions and prohibitions of this order as well as the management responsibiUties detailed in the Habitat Restoration and Monitoring Plan (RECON; October 26,2001). 10. Not later than 60 days following the completion of the installation of the mitigation areas, the discharger shall submit, acceptable to the Regional Board, final conservation easements or deed restrictions for all mitigation and preservation areas. 11. The discharger shall submit an as-built report within 60 days of installation of the proposed mitigation. C. SECTION 401 WATER QUALITY CERTIFICATION PROVISIONS 1. Standard conditions appUcable to 401 Water QuaUty Certification: a. Every certification action is subject to modification or revocation upon administrative or judicial review, including review and amendment pursuant to CWC §13330 and 23 CCR §3867. b. Certification is not intended and shall not be constraed to apply to any activity involving a hydroelectric faciUty and requiring a Federal Energy Regulatoiy Commission (FERC) license or an amendment to a FERC Ucense unless the pertinent ceitification application was filed pursuant to 23 CCR §3855(b) and that appUcation specifically identified that a FERC Ucense or amendment to a FERC license for a hydroelectric facility was being sought. c. Certification is conditioned upon total payment of any fee required pursuant to 23 CCR §3833 and owed by the discharger. 2. Any proposed change in constraction that may alter flow pattems and/or change the approved impact footprint is prohibited without Regional Board approval. Not later than 30 days prior to tfie beginning of any proposed change, the discharger shall submit, acceptable to the Regional Board, detailed plans and specifications showing the proposed change in relationship to the approved project Order R9-2002-0014 3. The discharger is prohibited from maintaining (e.g., mowing, praning, etc.) riparian vegetation within Agua Hedionda Creek for tfie purposes of increasing the hydrologic capacity of the creek or to provide protection to the proposed bridge. 4. All waters of tfie United States and State tfiat are to be preserved shall be fenced no less than 10 days prior to the start of any clearing and/or grading activities. A qualified biologist shall show all preservation areas to all consttuction personnel and shall explain the condition^ of this Order and other pennits regarding impacts. 5. The discharger shall staff a qualified biologist on site during project constiuction to ensure compUance with the certification requirements. The quaUfied biologist shall be onsite at least once a week when grading and/or consttuction activities occur more than 100 feet from a waters of tfie U.S. or State tfiat is to be preserved. When grading and/or consttuction activities occur witiiin 100 feet of a waters of tfie U.S. or State tfiat is to be preserved, tfie biologist shaU be onsite daily. The biologist shall be given the autfiority to stop all work onsite if a violation occurs or has the potential to occur. 6. Not later tfian 30 days prior to tfie beginning of grading, tfie discharger shall submit, acceptable to the Regional Board, a detailed Final Water QuaUty Plan. This plan shall include, but not be limited to, identification of pollutants expected to be generated by the proposed project identification of specific Best Management Practices, their treatment efficiency with regards to expected pollutants, specific locations, specific maintenance requirements, and maintenance responsibilities. Implementation of the Final Water Quality Plan shall occur in conjunction witfi project initiation. 7. The discharger shall notify the Regional Board in writing at least 15 days prior to actual start dates for each project component (e.g., clearing, grabbing, grading, installation of mitigation). 8. Detention basins BJ and BJB shall not be counted towards mitigation credit for impacts to waters of the U.S. and State, and shall be inaintained in accordance with the conditions specified in Attachment 1, or in a manner tfiat provides equivalent protection. D. STANDARD PROVISIONS 1. The discharger shall notify tfie Regional Board by telephone within 24 hours whenever an adverse condition occurs as a result of this discharge. Such a condition includes, but is not limited to, a violation of the conditions of tfiis Order, a significant spill of pettoleum products or toxic chemicals, or dainage to conttol facilities that would cause noncompUance. Pursuant to CWC §13267(b), a written notification of tfie adverse condition shall be submitted to tfie Board within one week of occunence. The written notification shall identify the adverse condition, describe the actions necessaiy to remedy the condition, and specify a timetable, subject to the modifications of the Regional Board, for the remedial actions. G m Order R9-2002-0014 2. The discharge of any hazardous, designated or non-hazardous waste as defined in Titie 23, Division 3, Chapter 15 of the Califomia Administtrative Code, shall be disposed of in accordance with appUcable state and federal regulations. 3. This Order is not transferable to any person except after notice to the Regional Board. In accordance witfi CWC § 13260, tfie discharger shall file witfi tfie Board a report of any material change or proposed change in the ownership, character, location, or quantity of tlus waste discharge. The notice must include a written agreement between the existing and new discharger containing a specific date for tfie transfer of tfiis Order's responsibility and coverage between the current discharger and the new discharger. This agreement shall include an acknowledgment that the existing discharger is Uable for violations up to the tt^sfer date and that tfie new discharger is Uable from the transfer date on. Any proposed material change in operation shall be reported to tfie Regional Board at least 30 days in advance of the proposed implementation of any change. This shall include, but not be Umited to, all significant new soil disturbances, all proposed expansion of development, or any change in drainage characteristics at the project site. For the purpose of this Older, this includes any proposed change in tfie boundaries of tfie wetiand/waters of tfie United States fill sites. The Regional Board may require modification or revocation and reissuance of this Order to change the name of the discharger and incorporate such other requirements as may t>e necessary under the Califomia Water Code. 4. The discharger shall maintain a copy of this Order at the project site so as to be available at all times to site operating personnel and agencies. 5. The discharger shall permit the Board or its autiiorized representative at all times, upon presentati(Mi of credentials: a. Entry onto project premises, including all areas on which wetiand fill or wetiand mitigation is located or in which records are kept. b. Access to copy any records required to be kept under tiie terms and conditions of this Order. c. Inspection of any treatment equipment, monitoring equipment, or monitoring method required by this Order. d. SampUng of any discharge or surface water covered by this Older. 6. This Order does not authorize commission of any act causing injury to the property of another or of tfie public; does not convey any property rights; does not remove UabiUty under federal, state, or local laws, regulations or rales of other programs and agencies, nor does this Older authorize the discharge of wastes without appropriate permits fiom other agencies or organizations. 7. The Regional Board will consider recission of this Order upon notification of successful completion of mitigation for all creation, and enhancement projects required or otherwise pennitted now or subsequentiy under tiiis Order, completion of project consttuction, and the Regional Board's acceptance of these notifications. Determination of mitigation success will m Order R9-2002-0014 be based on the provisions discussed above. 8. The discharger must comply witii all conditions of tfiis Order. Any noncompUance witfi this Order constitutes a violation of tfie Califomia Water Code and is grounds for (a) enforcement action; (b) termination, revocation and reissuance, or modification of this Order; or (c) denial of a report of waste discharge in application for new or revised waste (Uscharge requirements. 9. The discharger shall report any noncompUance which may endanger health or the • environment. Any such infonnation shall be provided orally to the Regional Board witiiin 24 hours from the time the discharger becomes aware of the circumstances. A written submission shall also be provided witiiin five days of the time tiie discharger becomes aware of the circumstances. The written submission shall contain a description of tfie noncompUance and its cause; the period of noncompUance, including exact dates and times, and if the noncompUance has not been corrected; the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompUance. The Regional Board, or an authorized representative, may waive the written report on a case-by-case basis if the oral report has been received witfiin 24 hours. 10. The discharger shall take all reasonable steps to minimize or correct any adverse impact on the environment resulting from noncompUance with this Order, including such accelerated or additional monitoring as may be necessary to determine the nature and impact of the noncompUance. 11. In an enforcement action, it shall not be a defense for the discharger that it would have been necessary to halt or reduce the pamitted activity in order to maintain compUance with this Order. Upon reduction, loss, or failure of the treattnent faciUty, the discharger shall, to the extent necessary to maintain compUance with this Order, control production or all discharges, or both, until the facility is restored or an altemative method of ttieatment is provided. This provision appUes for example, when the primary source of power of the ttieatment facility is failed, reduced, or lost. 12. This Older may be modified, revoked and reissued, or tenninated for cause including, but not limited to, the following: a. Violation of any terms or conditions of this Order, b. Obtaining this Older by misrepresentation or failure to disclose fiilly all relevant facts; or c. A change in any condition that requires either a temporary or pennanent reduction or eUmination of tiie authorized discharge. 13. The fiUng of a request by the discharger for tfie modification, revocation and reissuance, or termination of this Order, or notification of planned changes or anticipated noncompUance does not stay any condition of this Order. ft Order R9-2002-0014 E. REPORTING AND RECORD KEEPING REQUIREMENTS 1. The discharger shaU submit copies of all necessaiy approvals and/or permits for the project and mitigation projects from applicable govemment agencies, inclucling, but not limited to, the Califomia Departtnent of Fish and Game, U.S. Fish and WildUfe Service, and U.S. Arniy Coips of Engineers, prior to the start of clearing/grading. 2. The discharger shall retain records of all monitoring information, including all caUbration and maintenance records, copies of all reports required by this Order, and records of all data used to complete tiie application for tiiis Order. Records shall be maintained for a minimum of five years from the date of the sample, measurement, report, or appUcation. This period may be extended during the course of any unresolved Utigation regarding this discharge or when requested by the Regional Boaid. 3. The discharger shall fumish to die Regional Board, witiiin a reasonable time, any infonnation which the Regional Board may request to detennine whether cause exists for modifying, revoking and reissuing, or terminating tfiis Order. The discharger shall also fumish to tfie Regional Board, upon request, copies of records required to be kept by tfiis Order. 4. Where the discharger becomes aware that it failed to submit any relevant facts in a Report of Waste Discharge or submitted incorrect information in a Report of Waste Discharge or in any report to tiie Regional Board, it shall promptiy submit such facts or information. 5. All appUcations, reports, or information submitted to the Regional Board shall be signed and certified as follows: a. The Report of Waste Discharge shall be signed as follows: i For a corporation - by a principal executive officer of at least the level of vice- president. u For a partnership or sole proprietorship - by a general partaer or the proprietor, respectively. iii For a municipaUty, state, federal or other pubUc agency - by either a principal executive officer or ranking elected official. b. All other reports required by this Order and other information required by the Regional Board shall be signed by a person designated in paragraph (a) of tfiis provision, or by a duly authorized representative of that person. An individual is a duly authorized representative only if: i The authorization is made in writing by a person descrilaed in paragraph (a) of this provision; and ii The authorization specifies either an individual or a position having responsibiUty for the overall operation of the regulated faciUty or activity; and iu The written authorization is submitted to tfie Regional Boaid. c. Any person signing a document under tfiis Section shall make the following certification: Cl Order R9-2002-0014 "I certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments and that, based on my inquiry of those individuals immediately responsible for obtaining the information, I believe that the information is trae, accurate, and complete. I am aware that there are significant penalties for submitting false information, including tiie possibiUty of fine and imprisonment." 6. The discharger shall submit reports required under tfiis Order, or other information required by the Regional Board, to: Executive Officer CaUfomia Regional Water QuaUty Conttol Board San Diego Region 9174 Sky Park Court, Suite 100 San Diego, CaUfomia 92123 F. NOTIFICATIONS 1. This Order does not convey any property rights of any sort or any exclusive privileges. The requirements prescribed herein do not authorize the commission of any act causing injury to persons or property, nor protect the discharger from UabiUty under federal, state or local laws, nor create a vested right for the discharger to continue the waste discharge. 2. These requirements have not been officially reviewed by the United States Environmental Protection Agency and are not issued pursuant to Section 402 of the Clean Water Act. 3. The provisions of this Order are severable, and if any provision of this Order, or the application of any provision of this Order to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this Order, shall not be affected thereby. 4. The adoption of these waste discharge requirements constitutes certification of water quality certification for the project as described in this Order pursuant to Section 401 of the Clean Water Act. This Order becomes effective on tfie date of adoption by the Regional Board /, John H. Robertus, Executive Officer, do hereby certify theforegoing is a full, true, and correct copy ofan Order adopted by the Califomia Regional Water Quality Control Board, San Diego Region, on February 13, 2002. /4om H. ROBERTUS Executive Officer 10 Ci CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN DIEGO REGION MONITORING AND REPORTING PROGRAM NO. R9-2002-0014 FOR CALAVERA HILLS II, LLC AND CITY OF CARLSBAD CALAVERA HILLS MASTER PLAN PHASE II & BRIDGE AND THOROUGHFARE DISTRICT NO. 4 & DETENTION BASINS SANDIEGO COUNTY 1. Constraction monitoring reports shall be submitted quarterly during all grading activities associated with the proposed project. Consttuction monitoring reports shall include, but not be Umited to the foUowing: a. Names, qualifications, and affiUations of the persons contributing to the report; b. Summary of constraction activities that include general locations, project (fl^^ component (e.g., school site, mitigation site), approximate acreage; c. Quantification of impacts to waters of the U.S. authorized under this Order; d. Dates, times, and names of qualified biologist(s) onsite; e. Summaiy of any problems, resolution, and notification that occuned during this monitoring period; and f. Photodocumentation, if necessary, of constraction activities. 2. Mitigation monitoring shall occur, at a minimum, quarterly during the first year following installation of mitigation areas, semi-annually during the second and third years, and annually until mitigation has been determined to be successful (as defined in the provisions of this Order, and mitigation success has been agreed to in writing by the Regional Board and the U.S. Army Corps of Engineers. Monitoring shall begin immediately after the completion of the first planting period. 3. Mitigation monitoring reports shall be submitted quarterly during the first year foUowing installation, semi-annually during the second and third years, and annually until mitigation has been deemed successful. Monitoring reports shall be submitted no later than 30 days following the end of the monitoring period. Monitoring reports shall include, but not be Umited to, the following: a. Names, qualifications, and affiliations of the persons contributing to the report; b. Tables presenting the raw data collected in the field as well as analyses of the physical and biological data; Order R9-2002-0014 c. Qualitative and quantitative comparisons of current nutigation conditions witfi pre-consttuction conditions and previous mitigation monitoring results; d. Photodocumentation from estabUshed reference points; and e. Other items specified in tfie draft and final Wetiand and Riparian Mitigation and Monitoring Plan. Monitoring Reports shall be submitted to: Califomia Regional Water Quality Conttol Board San Diego Region 9174 Sky Park Court, Suite 100 SanDiego, Ca 92123 Ordered by:i H.ROBI lecutive Officer '9\ '•'i- A clean environment is important to all of us! NOT connected to sanitary sewer systems and treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. Untreated storm water and the pollutants it carries flow directly into creeks, lagoons and the ocean. In recent years, sources of water pollution like industrial waters torn factories have been greatly reduced. However, now the majority of water poHution occurs from things like cars leaking oil, fertilizers from farms and gardens, failing septic tanks, pet waste and residential car washing into the storm drains and into the ocean and waterways. All these sources add up to a pollution problem! But each of us can do our part to help clean up our water and that adds up to a pollution solution! Car wastiing courtesy of Quality Con cooperative between tiie State Depart Ecology, Kin the cities of Seattle and car washiing? There's no problem with washing your car. It's just how and where you do it. Most soap contains phosphates and other chemicals that harm fish and water quality. The soap, together with the dirt, metal and oil washed from your car, flows into nearby storm drains which run directly into lakes, rivers or marine waters. The phosphates from the soap can cause excess algae to grow. Algae look bad, smell bad, and harm water quality. As algae decay, the process uses up oxygen in the water that fish need. How can YOU lielp keep tiie environment clean? Having a clean environment Is of primary importance for our health and economy. Clean waterways provide commercial opportunities, recreation, fish habitat and add beauty to our landscape. YOU can help keep our ocean, creeks and lagoons clean by applying the following tips: • Use soap sparingly. • Use a hose nozzle with a trigger to save water. • Pour your bucket of soapy water down the sink when you're done, not in the street. • Avoid using engine and wheel cleaners or degreasers. • Take your car to a commercial car wash, especially if you plan to clean the engine or the bottom of your car. Most car washes reuse wash water several times before sending it to the sewer system for treatment. • Hire only mobile detail operators that will capture wash water and chemicals. It is unlawful for commercial vehicle washing operators to allow wash water to enter the storm drain system. What you should know before using Concrete and Mortar ... In the City of Carisbad, storm drains flow directly into local creeks, lagoons and the ocean without treatment. Storm water pollution is a serious problem for our natural environment and for people who live near streams or wetiands. Storm water pollution comes from a variety of sources including oil, fuel, and fluids, from vehicles and heavy equipments, pesticide runoff from landscaping, and from materials such as concrete and mortar from construction activities. The City of Carlsbad is committed to improving water quality and reducing the amount of pollutants that enter our precious waterways. A Clean Environment is Important to All of Usi ®^Protec<^° City of Carlsbad 1635 FaradayAvenue Carlsbad, CA 92008 Storm Water HOTIine: 760-602-2799 stormwater@ci.carlsbad.ca.us March 2003 nly Rain in the Storm DrainI Pollution Prevention is up to YOU! Did you know that storm drains are NOT connected to sanitary sewer systems or treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. Untreated pollutants such as concrete and mortar flow directly into creeks, lagoons and the ocean and are toxic to fish, wildlife, and the aquatic environment. Disposing of these materials into storm drains causes serious ecological problems—and is PROHIBITED by law. Do the job Right! This brochure was designed for do-it- yourself remodelers, homeowners, masons and bricklayers, contractors, and anyone else who uses concrete or mortar to complete a construction project. Keep storm water protection in mind whenever you or people you hire work on your house or property. STORM WATER HOTUNE 760-602-2799 Best Management Practices Best Management Practices or BMPs are procedures and practices that help to prevent pollutants such as chemicals, concrete, mortar, pesticides, waste, paint, and other hazardous materials from entering our storm drains. All these sources add up to a pollution problem. But each of us can do our part to keep storm water clean. These efforts add up to a pollution solution! What YOU Can Do; • Set up and operate small mixers on tarps or heavy plastic drop cloths. • Don't mix up more fresh concrete or mortar than you will need for a project. • Protect applications of fresh concrete and mortar from rainfall and runoff until the material has dried. • Always store both dry and wet materials under cover, protected from rainfall and runoff and away from storm drains or waterways. • Protect dry materials from wind. Secure bags of concrete mix and mortar after they are open. Don't allow dry products to blow into driveways, sidewalks, streets, gutters, or storm drains. • Keep all construction debris away from the street, gutter and storm drains. Never dispose of washout into the street, storm drains, landscape drains, drainage ditches, or streams. Empty mixing containers and wash out chutes onto dirt areas that do not flow to streets, drains or waterways, or allow material to dry and dispose of properly. Never wash excess material from bricklaying, patio, driveway or sidewalk construction into a street or storm drain. Sweep up and dispose of small amounts of excess dry concrete, grout, and mortar in the trash. Wash concrete or brick areas only when the wash water can flow onto a dirt area without further runoff or drain onto a surface which has been bermed so that the water and solids can be pumped off or vacuumed up for proper disposal. Do not place fill material, soil or compost piles on the sidewalk or street. If you or your contractor keep a dumpster at your site, be sure it is securely covered with a lid or tarp when not in use. During cleanup, check the street and gutters for sediment, refuse, or debris. Look around the corner or down the street and clean up any materials that may have already traveled away from your property. A clean environment is important to ail of us! Did you Icnow that storni drains are NOT cormected to sanitary sewer lystams and treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. Untreated storm water and the pollutants it carries, flow directly into creeks, lagoons and the ocean. In recent years, sources of water pollution like industrial waters from factories have been greatiy reduced. However now, the majority of water pollution occurs from things like cars leaking oil, fertilizers from fanns and gardens, failing septic tanks, pet waste and residential car washing into the storm drains and into the ocean and waterways. All these sources add up to a pollution probleml But each of us can do small things to help clean up our water and that adds up to a pollution solution! Wliaf s tiie problem with fertilizers and pesticides? Fertilizer isn't a problem—IF it's used carefully. Ifyou use too much fertilizer or apply it at the wrong time, it can easily wash off your lawn or garden into storm drains and then flow untreated into lakes or streams. Just like in your garden, fertilizer in lagoons and streams makes plants grow. In water bodies, extra fertilizer can mean extra algae and aquatic plant growth. Too much algae harms water quality and makes boating, fishing and swimming unpleasant. As algae decay, they use up oxygen in the water that fish and other wildlife need. Fertilizer photo is used courtesy of the Water Quality Consortium, a cooperative venture between the Washington State Department of Ecology, King County and the cities of Bellevue, Seattle and Tacoma. Lawn & v||^ly Ram in the Slierm Ocainl ^'•ProtBO*° Storm Water HOTIine: 760-602-2799 stormwater@ci.carlsbad.ca.us City of Carlsbad 1635 Faraday Avenue Cartsbad CA 92008 www.ci.carlsbad.ca.us City of Carlsbad Storm Water Protection Program Siwijii'i MftiliiUf.' HOlhigec ^ ^Printed on recycled paper ••-M.ga,,,, ' w 1— * ** • i I How can YOU help keep the environment clean? . Having a clean environment is of ' - primary importance for our health and •A. economy Glean waterways provide tf commercial opportunities, recreation, fish habitat and add beauty to our landscape. YOU can help keep our creeks, lagoons and ocean clean by applying the following tips: •..*/». • Don't blow or rake leaves and other yard waste into the street or gutter. •1 =-•»»'. • • Recycle yard waste or start your own compost pile. D<m1 over irrigate. Use drip irrigation, soaker hoses or micro- spray system and water early in the moming. Ifyou have a spray head sprinkler system, consider adjusting your watering method to a cycle and soak. Instead of watering for 15 minutes straight, break up the session into 5 minute intervals allowing water to soak in before the next application. 4 Keep imgation systems well- maintained and water only when needed to save money and prevent over-watering. Use fertilizers and pesticides sparingly. Have your soil tested to detennine the nutrients needed to maintain a healthy lawn. Consider using organic fertilizers— they release nutrients more slowly. Leave mulched grass clippings on the lawn to act as a natural fertilizer. Use pesticides only when absolutely necessary. Use the least toxic product intended to target a specific pest, such as insecticidal soaps, boric acid, etc. Always read the label and use only as directed. Use predatory insects to control harmful pests when possible. Properiy dispose of unwanted pesticides and fertilizers at Household Hazardous Waste collection facilities. For more Infonnation on landscape irrigation, please call 760-438-2722. Master Gardeners San Diego County has a Master Gardener program through the University of Califomia Cooperative Extension. Master Gardeners can provide good information about dealing with specific pests and plants. You may call the Master Gardener Hotline at 858-694-2860 or check out their website at www.masterqardenerssandieqo.orq. The hotline is staffed Monday—Friday, 9 am—3 pm, by experienced gardeners who are available to answer specific questions. Information from Master Gardeners is free to the public. A ciean environment is important to ail of us! Did you know that stonn drains are NOT connected to sanitary sewer systems and treatment plants? The primary purpose of stomi drains is to cany rainwater away from developed areas to prevent flooding. Untreated stomi water and the pollutants it canies, flow directly into creeks, lagoons and the ocean. In recent years, sources of water pollution like industrial waters from factories have been greatly reduced. However now, the majority of water pollution occurs from things like cars leaking oil, fertilizers from fanns, lawns and gardens, failing septic tanks, pet waste and residential car washing into the storni drains and into the xean and waterways. All these sources add up to a pollution problem! But each of us can do small things to help clean up our water and that adds up to a pollution solution! Motor oil photo is used courtesy of the Water Quality Consortium, a cooperative venture between the Washington State Department of Ecology, King County and the cities of Bellevue, Seattle and Tacoma. Only Rain in the Storm DrainI City Of Carlsbad Storm Water Protection Program City of Carlsbad 1635 Faraday Avenue Carlsbad CA 92008 Storm Water HOTIine: 760-602-2799 Funded by a grant JBm from the California I^^V Integrated Waste R E^^L E Management Board USED OIL Motor Oil Rain in the Storm Drain! City of Carlsbad Storm Water Protection Program Storm Water HOTIine: 760-602-2799 H °" recycled paper Wiiat's thie problem witii motor oil? How can YOU iielp keep our environment ciean? Oil does not dissolve in water. It lasts a long time and sticks to everything from beach sand to bird feathers. Oil and other petroleum products are toxic to people, wildlife and plants. One pint of oil can make a slick larger than a football field. 0 il that leaks from our cars onto roads and driveways is washed into stonn drains, and then usually flows directly to a creek or lagoon and finally to the ocean. Used motor oil is the largest single source of oil pollution in our ocean, creeks and lagoons. Americans 180 million gallons of used oil each year into our waters. This is 16 times the amount spilled by the Exxon Valdez in Alaska. Having a clean environment is of primary importance for our health and economy. Clean waterways provide commercial opportunities, recreation, fish habitat and add beauty to our landscape. YOU can help keep our ocean, creeks and lagoons clean by applying the following tips: • Stop drips. Check for oil leaks regulariy and fix them prompfly. Keep your car tuned to reduce oil use. • Use ground cloths or drip pans beneath your vehicle if you have leaks or are doing engine wori(. • Clean up spills immediately. Collect all used oil in containers with tight fitting lids. Do not mix different engine fluids. • When you change your oil, dispose of it properiy. Never dispose of oil or other engine fluids down the stonn drain, on the ground or into a ditch. • Recycle used motor oil. There are several locations in Carisbad that accept used motor oil. For hours and locations, call 760-434-2980. • Buy recycled ("refined") motor oil to use in your car. A clean environment is important to all of us! Did you know that storm drains are NOT connected to sanitary sewer systems and treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. Untreated storm water and the pollutants it carries, flow directly into creeks, lagoons and the ocean. In recent years, sources of water pollution like industrial waters from factories have been greatly reduced. However now, the majority of water pollution occurs from things like cars leaking oil, fertilizers from farms and gardens, failing septic tanks, pet waste and residential car washing into the stonn drains and into the ocean and waterways. All these sources add up to a pollution problem! But each of us can do small things to help clean up our water and that adds up to a pollution solution! 4 I 4- S r Pet waste photo is used courtesy of the Water Quality Consortium, a cooperative venture between the Washington State Department of Ecology, King County and the cities of Bellevue, Seattle and Tacoma. Storm Water HOTIine: 760-602-2799 stormwater@ci.carlsbad.ca.us City of Carlsbad 1635 Faraday Avenue Carlsbad CA 92008 www.ci.carlsbad.ca.us 4 ^•iiii^iii^^BII^HIH^^^II ••'"•'•••Pet Waste Rain in the Storm DrainI City of Carlsbad Storm Water Protection Program Storm Water HOTIine: 760-602:2799 . a. ^P""ted on recycled paper ***** TfJ**"* Wliat's the problem withi pet waste? How can YOU help l<eep the environment clean? Pet was% is a health risk to pets and people, especially children. It's a nuisance Jn our neighborhoods. Pet waste is full of bacteria that can make people sick. This bacteria gets washed into the storm drain and ends up in our creeks, lagoons and ocean. The bacteria ends up in shellfish living in these water bodies. People who eat those shellfish may get very sick. Preliminary studies show that dog and cat waste can contribute up to 25% of the harmful bacteria found in our local lagoons. Be responsible and clean up after your pets. It's as easy as 1—2—3! 1. Bring a bag. 2. Clean it up. 3. Dispose of waste properly in toilet or trash. Having a clean environment is of primary importance for our health and economy. Clean waterways provide commercial opportunities, recreation, fish habitat and add beauty to our landscape. YOU can help keep our creeks, lagoons and ocean clean by applying the following tips: • Carry a plastic bag when walking pets and be sure to pick up after them. • Clean up pet waste in your yard frequently. • Pick up after your pets before cleaning patios, driveways and other hard surfaced areas. Never hose pet waste into the street or 4 gutter. 4 The best way to dispose of pet waste is to flush it down the toilet because it gets treated by a sewage treatment plant. Other disposal methods for pet waste include sealing it in a bag and placing in trash or burying small quantities in your yard to decompose. Be sure to keep it away from vegetable gardens. A Clean Environir^ent is IiT^portant to All of Us! In the City of Carlsbad, storm drains flow directly into local creeks, lagoons and the ocean without treatment. Storm water pollution is a serious problem for our natural environment and for people who live near streams or wetlands. Storm water pollution comes from a variety of sources including oil, fuel, and fluids, from vehicles and heavy equipment, pesticide runoff from landscaping, and from materials such as concrete, mortar and soil from construction activities. The City of Carlsbad is committed to improving water quality and reducing the amount of pollutants that enter our precious waterways. Sf:sp '^^Protec<SO^ Storm Water Protection Program stormwater@ci.carlsbad.ca.us 760-602-2799 City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008 ^ ^Printed on recycled paper It's All Just Water, Isn't It? Only Rain in the Storm Drain! How Do I Get Rid of Chlorine? Pool Filters Although we enjoy the fun and relaxing times in them, the water used in swimming pools and spas can cause problems for our creeks, lagoons and the ocean if not disposed of properly. When you drain your swimming pool, fountain or spa to the street, the high concentrations of chlorine and other chemicals found in the water flows directly to our storm drains. bid you know that these storm drains are NOT connected to sanitary sewer systems and treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. Improperly disposing of swimming pool and spa water into storm drains may be harmful to the environment. Best Management Practices Best Management Practices or BMPs are procedures that help to prevent pollutants like chlorine and sediment from entering our storm drains. Each of us can do our part to keep storm water clean. Using BMPs adds up to a pollution solution! Pool and spa water may be discharged to the storm drain if it has been properly dechlorinated and doesn't contain other chemicals. The good news is that chlorine naturally dissipates over time. Monitor and test for chlorine levels in the pool over a period of 3 to 5 days. Drain the water before algae starts to grow. Consider hiring a professional pool service company to clean your pool, fountain, or spa and make sure they dispose of the water and solids properly. For more information about discharging wastewater to the sanitary sewer, please contact the Encina Wastewater Authority at (760)438- 3941. Before you discharge your swimming pool or spa water to the storm drain, the water: • Must not contain chlorine, hydrogen peroxide, acid, or any other chemicals. • Can not carry debris or vegetation. • Should have an acceptable pH of 7-8. • Can not contain algae or harmful bacteria (no "green" present). • Flow must bc controlled so that it does not cause erosion problems. Clean filters over a lawn or other landscaped area where the discharge can be absorbed. Collect materials on filter cloth and dispose into the trash. Diatomaceous earth cannot be discharged into the street or storm drain systems. Dry it out as much as possible, bag it in plastic and dispose into the trash. Acid Washing Acid cleaning wash water is NOT allowed into the storm drains. Make sure acid washing is done in a proper and safe manner that is not harmful to people or the environment. It may be discharged into the sanitary sewer through a legal sewer connection after the pH has been adjusted to no lower than 5.5 and no higher than 11. Do the Job Right! • Use the woter for irrigation. Try draining de-chlorinated pool water gradually onto a landscaped area. Water discharged to landscape must not cross property lines and must not produce runoff. • Do not use copper-based algaecides. Control algae with chlorine or other alternatives to copper-based pool chemicals. Copper is harmful to the aquatic environment. • During pool construction, contain ALL materials and dispose of properly. Materials such as cement, Sunite, mortar, and sediment must not be discharged into the storm drains. Only Rain in the Storm Drain! storm Water Protection... It's OUR Business! Did Vou Know.. The prinnary purpose of storm drains is to carry rain water away from developed areas to prevent flooding. Storm drains are not connected to sanitary sewer systems and treatment plants. Untreated storm water and the pollutants it carries flow directly to creeks, lagoons and the ocean. Storm water pollution comes from a variety of sources including: • Oil, fuel and fluids from vehicles and heavy equipment Lawn clippings, pesticide and fertilizer runoff from landscaping • Sediment and concrete from construction and landscaping activities • Bacteria from human and animal waste • Litter The City of Carlsbad is committed to improving water quality and reducing the amount of pollutants that enter our precious waterways. Why do we need a clean environment? Having a clean environment is of primary importance for our health and economy. Clean waterways provide commercial opportunities, recreation, fish habitat and add beauty to our landscape. All of us benefit from clean water - and all of us have a role in making and keeping our creeks, lagoons and ocean clean. EVERYONE is responsible for protecting storm water! Storm Water pollution prevention is a shared duty between the City of Carlsbad and the Community. Storm drains on public property are monitored and cleaned by the City. Everyone has a part to play in keeping our storm drains free of pollutants. Methods used to prevent storm water pollution are called Best Management Practices (BMPs). Help keep our creeks, lagoons and ocean clean! Beiow are some BMPs you can use at home. Sweep or Rake • Sweep up debris and put it in a trash can. Do not use a hose to wash off sidewalks, parking areas and garages. Rake up yard waste and start a compost pile. Reduce Use of Landscape Chemicals • Minimize the use of lawn and garden care products such as pesticides, insecticides, weed killers,fertilizers, herbicides and other chemicals. Avoid over-irrigation which washes chemicals into the gutter and storm drains. Use Soap Sparingly • When washing your car at home, use soap sparingly, divert washwater to landscaped areas and pour your bucket of soapy water down the sink. Never wash your car in the street. Clean up After Your Pets • Take a bag when you walk your pets and be sure to always clean up after them. Flush pet waste down the toilet or dispose of it in a sealed plastic bag and throw it in the trash. Buy Non-Toxic Products • When possible, use non-toxic products for household cleaning. If you must use a toxic cleaning product, buy small quantities, use it sparingly and properly dispose of unused portions. For the Household Hazardous Waste collection facility nearest you, call 1 -800-CLEANUP. ^1^1 'hat is the Storm Water Program? _he City is regulated by a munidpal storm water permit Board Th'rf'r''''' ""''^^^^'^ ^onS Board The City's Storm Water Program helps to ensure compliance with the permit by: "'^"^ure • Inspecting Carlsbad businesses and requiring BMPs to prevent pollution • Investigating and eliminating illegal discharges to the storm water system • Overseeing and conducting water quality monitoring programs • Educating the public about ways to prevent storm water pollution • f ' ^. i.' Are all discharges to the storm drain illegal? In the strictest definition, only rain water can legally enter he storm dram However, the permit currently allows some types of discharges into storm drains when BMPs are used to reduce pollutants. Some examples include • Landscape irrigation and lawn watering runoff • Dechlorinated pool water • Residential car washing • Potable water sources • Foundation drains • Water line flushing How do I report a storm water violation? The Storm Water Program operates a hotline and an e-mail nS H- r^'"'^^"^-^ water pollution ar^d SlorS^^^^^ If you see someone dumping or washing waste or pollutants to the street or storm drain, please call the hotline at 602 2799 or send an email to stormwater@ci.carlsbad.ca.us This information is entered into the City's Request for Action system and is routed to the appropriate^ersrforTesX Where can I get more Information? • Visit the City's website at www.d.carlsbad.ca.us/ cserv/storm.html to view brochures, documents or link to other water quality websites. ^Tienrsoriink • Call^the hotline at 602-2799 to have information sent • To view a copy of the Permit, please go to http://www.swrcb.ca.gov/programs/ sd_stormwater.html. What is the City doing to keep our waterways clean' Significant efforts are being made by City departments to ' water'nom T ^"^^'^^^^^ ^^^^^ storm water pollution prevention through our website brochures, publications, workshops and public events • Inspecting construction sites to ensure that developers are -mplementing Best Management Practices • implementing Best Management Practices at City facilities • Conducting industrial and commercial inspections to ensure businesses are aware of and complyingrth °he storm water program requirements Q^'^^the • Addressing storm water requirements for new development and significant redevelopment • s^sLm'ir^"'"'^ 'monitoring in the storm drain system and in our creeks, lagoons and ocean • investigating reports of illegal discharges • Implementing a Watershed Urban Runoff Manaaement P^n (WURMP) With the County and other Nor 'coTn y cities to protect all of our waterways Be Part of the Pollution Solution! Storm Water Hotline: 760-602-2799