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B20-0422 - 33182 PASEO CELESTIALCITY OF SAN JUAN CAPISTRANO BUILDING PERMIT Permit No. B20-0422 06/17/2020 ISSUED JOBVALUE NO_UNITS Permit Number ISSUED_BY SITE_APN SITE_LOT_NO SITE_TRACT SITE_SUBDIVISION PERMIT TYPE. OCCUPANCY_TYPE BUILDING _SF NO_STORIES DB1 675-444-14 5 15609 TRADEWINDS $ 67,500 POOL AND SPA 0 0 0 JOB ADDRESS: 33182 PASEO CELESTIAL TOLL BROTHERS LLC,OWNER NAME 725 W. TOWN & COUNTRY RDMAILING ADDRESS CITY,STATE,ZIP CONTRACTOR NAME ST. LIC EXPIRE ADDRESS ST. LIC # CITY, ST, ZIP TENANT NAME PHONE # MAILING ADDR CITY, ST, ZIP PHONE # CITY, ST, ZIP MAILING ADDRESS ST LICENSE # ARCH/ENG/DESIGNER I have carefully examined the completed permit application and do hereby certify under penalty of perjury that all information hereon including the declarations are true and correct and I further certify and agree if a permit is issued: to comply with all City, County, and State laws governing building construction, whether specified herein or not. I also agree to save, indemnify and keep harmless the City of San Juan Capistrano against all liabilities, judgments, costs and expenses which may in any way accrue against said City in consequence of the granting of this permit. Applicant's signature Owner/Contractor Print Name DREAMSCAPES BY M G R INC 1901 NEWPORT BLVD SUITE 350 10/31/2021 PLUMBING PERMIT AMOUNT MECHANICAL PERMIT AMOUNT MOBILE HOME PERMIT AMOUNT Expiration: Every permit issued by the Building Official under the provisions of this Code shall expire by limitation and become null and void. If the building or work authorized by such permit is not commenced within 180 days from the date of such permit, or if the building or work authorized by such permit is suspended or abandoned at any time after the work is commenced for a period of 180 days. An OSHA permit is required for excavations over 5’0” deep and demolition or construction of structures over 3 stories in height. _____Contractor:I hereby affirm that I am licensed under provisions of Chapter 9 of Division 3 of the Business and Professions Code, and my license is in full force and effect. _____Owner/Builder:I, as owner of the property, or my employees with wages as their sole compensation, will do the work and the structure is not intended or offered for sale. (Sec.7044, Business and Professions Code: the Contractor’s License Laws does not apply to and owner of property who builds or improves thereon, who does such work himself or through his employees, provided that such improvements are not intended or offered for sale. If however, the building or improvement is sold within one year of completion, the owner-builder will have the burden of proving that he did not build or improve for the purpose of sale) ______Owner/Builder:I, as owner of the property, am exclusively contracting with licensed contractors to construct the project (Sec. 7044, Business and Professions Code: The Contractor’s License Law does not apply to an owner of property who builds or improves thereon and who contracts for such projects with a contractor’s) license pursuant to the Contractor’s License Law. _______ Workers Compensation-I hereby affirm under penalty of perjury one of the following declarations:I have and will maintain workers’ compensation insurance, as required by Section 3700 of the Labor Code, for the performance of the work for which this permit is issued. My workers’ compensation insurance carrier and policy number are: Carrier__STATE COMPENSATION INSURANCE FUND Policy#9265436 (This section needs to be completed if the permit is for one hundred dollars($100) or less) AMOUNTELECTRICAL PERMITDESCRIPTION _______ I certify that in the performance of the work for which this permit is issued, I shall not employ any person in any manner so as to become subject to the workers’ compensation laws of California and agree that if I should become subject to the workers’ compensation provisions of Section 3700 of the Labor Code, I shall forthwith comply with those provisions. WARNING:FAILURE TO SECURE WORKERS’COMPENSATION COVERAGE IS UNLAWFUL, AND SHALL SUBJECT AN EMPLOYER TI CRIMINAL PENALTIES AND CIVIL FINES UP TO ONE HUNDRED THOUSDAND DOLLARS($100,000) IN ADDITION TO THE COST OF COMPENSATION, DAMAGES AS PROVIDED FOR IN SECTION 3706 OF THE LABOR CODE, INTEREST, AND ATTORNEY’S FEES. B20-0422 RECEPTACLE SWITCH AND LIGHT OUTLETS 4.88 PRIV COMBO INSTALL-CONST SPA 74.96 MISCELLANEOUS APPARATUS/CONDUIT/CONDU 20.15 ELECTRICAL ISSUANCE FEE 27.24 EXTEND ELECTRICAL 10.52 Total Electrical 137.75 POOL / SPA PLUMBING 67.27 # GAS SYSTEMS 6.81 EXTEND PLUMBING 10.52 PLUMBING ISSUANCE FEE 27.24 111.84Total Plumbing POOL / SPA MECHANICAL 30.26 MECHANICAL ISSUANCE FEES 27.24 Total Mechanical 57.50 Total Mobile Home 694588 , COSTA MESA, CA 92627 , ORANGE, CA 92868 (949) 999-2041 1124sf POOL/SPA. GAS/ELEC TO BBQ, FIREPIT PHONE PHONE Date _________________ Applicant _______________________________________ Steffenie Ellison se se FINAL 01/14/21 Date: Permit No. Applicant: Phone/E-Mail Job Location: CITY OF SAN JUAN CAPISTRANO BUILDING PERMIT FEES Account # Type Cost 01-44221 Building Permit 01-44223 Mechanical 01-44224 Plumbing 01-44225 Electrical 01-44221 Mobile Home Permit 01-44222 Grading Permit Fee 01-44231 Grading Plan Check 01-44222 On-Site Residential Permit 01-44231 On-Site Residential Plan Check Subtotal 01-44230 Bond Processing 01-44230 Building Plan Check 01-44230 Additional Plan Check 01-44230 Digital Record Fee ($1.00 per sheet) 01-44221 C & D Administrative Fee 01-44221 Special Inspection-Reinspection 01-44222 On-Site Commercial/Tract Permit Fee 01-44231 On-Site Commercial/Tract Plan Check Fee 01-44214 Geotechnical Soils Plan Review 10-44320 Ordinance 211 10-42510 Ordinance 364 01-45354 Copies @ .20 Each 90-23331 SMIP Fee 33-44370 H.O.P.E. Fee (Housing in Lieu) Other Fees TCA Fees Date Received HOA Approval Date Received School Fees Date Received Engineering Fees Date Received Water Division Fees Date Received 01-44221 01-44221 01-44240 90-23000 90-23000 TOTAL FEES PAYABLE TO CITY OF SAN JUAN CAPISTRANO Receipt # _________ Date: ______________ Cashier: _____________________________ Refundable Bond/Deposit Posted by ______Owner_____Contractor ________Type Title 24 Energy Provision (20% Permit Subtotal & Bldg Plan Check)) Title 24 ADA Fee (10% Permit Subtotal & Bldg Plan Check) Refundable Bond/Deposit Posted by ______Owner_____Contractor ________Type NPDES Permit Fee (10% Permit Subtotal) $ 874.90 $ 137.75 $ 57.50 $ 111.84 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $ 22.80 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $8.78 $0.00 $0.00 $0.00 $ 118.20 $ 1,399.36 6/17/2020 $ 2,731.13 $0.00 $ 1,181.99 6/17/2020 B20-0422 DREAMSCAPES BY M G R INC 33182 PASEO CELESTIAL 75974 (949) 999-2041 $0.00 BUILDING DEPARTMENT PERMIT APPLICATION - 32400 Paseo Adelanto San Juan Capistrano, CA 92675 949-493-1171 JOB VALUATION DESCRIPTION OF WORK $ Name Address City/State/Zip Name Address City/State/Zip Phone Phone ( ) ARCHITECT / ENGINEER / DESIGNER CONTRACTOR Name Address City/State/Zip ( )) State License # Phone ( QTY QTY QTY QTY Light Fixtures/Fans FAU < 100k BTU's Fixtures/Hose Bibs New/Setup Outlets/Switches FAU > 100k BTU's Water Heater Carport Meters/Main Panel AC/Comp BTU= Water Piping Sub Panels Gas Systems Awning Signs Exhaust Fans Building Sewer Temp Power Motors > than 1 HP Motors < than 1 HP Duct/Register/Grill Pool/Spa Pool/Spa Extend Plumbing SIGNATURE DATE Porch ISSUANCE () ELECTRICAL PLUMBING Phone MECHANICAL Name City/State/Zip ISSUANCEISSUANCE Fireplace ISSUANCE Fire Sprinkler Heads Miscellaneous () PROPERTY OWNER Address Appliance Vent MICROFILE INT. ALT. SF ADDITION SF POOL/SPA SF MOBILE HOME JOB ADDRESS APPLICANT NAME CONTACT PHONE # EMAIL ADDRESS Extend Electrical Cabana OCCUPANCY TYPE PATIO SF PERMIT NUMBER HOA REQUIREDTARGET DATE YES NO TENANT Pool/Spa Mechnical Hood Miscellaneous Grease Interceptor Earthquake Bracing Electrical Wiring Gas Piping Sewage Disposal Water Piping State License # B20 0422 May 28, 2020 John J. & Song M. Cho 33182 Paseo Celestial San Juan Capistrano, CA 92675 Re: Pacifica San Juan Community Association Phase: 2 Architectural Approval - 33182 Paseo Celestial Dear John J. & Song M. Cho: Your architectural plans (Landscape and Hardscape; Pool and Spa; BBQ Island; Artifical Turf; Pergola) were reviewed by the Architectural Review Committee at their most recent Committee meeting. After review of the plans submitted, the Committee determined to approve your architectural application as submitted with the following comments: COMMENTS:5.26.20 – Application approved as revised. -Any changes to the approved plans must be submitted to management with an updated set of plans. Those plans will be sent to the architectural review committee for another review. -The plans and setbacks from all structures must be approved by the City of San Juan Capistrano. It is the Homeowner’s responsibility to obtain any required city and/or county permits. -All plants, walls and structures must be set back a minimum distance of 12” from the association maintained wrought iron fence. Please be advised that if your plans have been approved, they are subject to acquiring any required City/County permits (if applicable), and work must be completed within the timeframe as stipulated in your governing documents. If you should have any questions, please contact the Architectural Review Committee via Seabreeze Management Company. Respectfully, The Architectural Review Committee Pacifica San Juan Community Association Pacific Coast Land Consulting Engineering Geologic Services Pool Design Recommendations Cho Residence 33182 Paseo Celestial San Juan Capistrano, CA 92675 March 12, 2020 F.N. 42P-33182-20 Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 2 John and Song Cho March 12, 2020 33182 Paseo Celestial F.N. 42P-33182-20 San Juan Capistrano, CA 92675 Subject: Pool Design Recommendations 33182 Paseo Celestial San Juan Capistrano, CA 92675 Mr. and Mrs. Cho, Presented herein, are the geotechnical evaluations and design recommendations for the proposed pool. The site conditions are generally straightforward. There are indications that the site is underlain by expansive soils. These conditions have been taken into account as part of the design process. The site is acceptable for a pool, provided that the conclusions and recommendations are adhered to and understood. Thank you for the opportunity to be of service. If you have any questions, please do not hesitate to contact us. Best regards, Ralph K. Jeffery Chris Lillback President, Pacific Coast Land Consulting Vice President CEG 1183, RG 3815 RCE 35007 Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 3 1.0 INTRODUCTION AND PURPOSE This report has been prepared to identify the geologic and geotechnical data that is necessary to be used in the design and construction of a new pool. The site is located at 33182 Paseo Celestial, in the area of San Juan Capistrano, see figure 1. Figure 1 Site Location Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 4 1.1 Scope of Work The scope of work is anticipated to include the following items and any supporting tasks necessary to accomplish this work. v Review and analysis of plans for the proposed pool v Request for soils reports and grading plans at the County of Orange v Site review v Evaluation of soils on site to ascertain design conditions v Design and analysis based upon site conditions leading to: general recommendations for pool and supporting construction (decks etc.) v Recommendations for drainage onsite v Presentation of data in a report form 2.0 SITE CONDITIONS 2.1 Site Description A site reconnaissance was conducted to determine the general site conditions and soils conditions, in the area of the proposed pool. The site is a previously graded lot with a home occupying the lot. The location that is proposed for the pool is along the back, east side of the lot. There are 2 descending slopes @ 2:1 (h:v) that are about 5 feet and 10 feet in height and 1 ascending slope @ 2:1 (h:v) that is about 5 feet in height along the back yard where the pool is proposed. Slopes are beyond the property line walls and are planted with shrubs. No signs of slope failures, or indication of creep on the slopes were noted. See figure 2. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 5 The area was reviewed for signs of soil movement such as separations of soil from the footings and tilting pilasters. No signs of movement were visible on site. Signs of expansive soils were noted on site. Figure 2 View of the proposed location of the pool in the northeast corner. Google Earth. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 6 Figure 3 View of the proposed location of the pool on the lot. 2.1 Proposed Pool Description The pool is about 53’ 4” long freeform shape with a width of about 26’. There will be a spa in the south end of the pool in the middle of a Baja shelf. The proposed layout of the pool is shown in figure 4. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 7 The pool will vary from 3’ to 5’ 6” feet in depth. The toe of slope setback for pools is h/4 which for this slope would be 1.25’ (5’/4). And The top of slope setback for pools is h/6 which for these slopes would be 0.83’ (5’/4) and 1.67’ (10’/6). The pool is 25’ 9” from the toe of the 5’ slope, 9’ 6” from the top of the 5’ slope, and 21’ 7” from the top of the 10’ slope at the closest locations. These dimensions satisfy the setback requirements as specified in the 2019 CBC. Figure 4 Proposed layout of the pool Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 8 3.0 GEOLOGIC CONDITIONS 3.1 Regional Geologic Setting The project site is located with the Peninsular Ranges Geomorphic Province. This province has specific characteristics that are considered when providing the recommendations for new structures. It consists of the southwestern part of Southern California, the accompanying mountain ranges and the near shore sedimentary rock units. The basin gives way to the coastal area and rolling hills, which form the transition in southerly direction to the Santa Ana Mountains, on the east, and the San Joaquin hills on the west. In the past, 5,000 to 30,000 years ago rainfall was much heavier. The rolling hills, weak formational soil strengths, prehistorically lower sea levels (higher canyon walls), and heavy rainfall, created an area replete with large landslides. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 9 Figure 5 Maps prepared by California Division of Mines and Geology (now the California Geologic Survey) indicates the site is underlain by a landslide (Qls). Underneath the landslide is mostly the turbidite facies (Tct) and the siltstone facies (Tcs) of the Capistrano Formation. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 10 Figure 5 Landslide data from CGS. The portion of the map shown indicates that the area is underlain by a landslide and at a certain depth, the siltstone facies of the Capistrano Formation. Typically, landslides consist of unconsolidated material from the parent formation. The parent formation of this landslide is most likely the Capistrano Formation. The Capistrano Formation consist of white to pale gray siltstone and mudstone, on which landsliding can occur. Because this site is in California it will be subject to ground shaking during a significant earthquake and as such the pool water could overflow the sides of the pool, for this reason and others a good drainage system is recommended. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 11 The site is not subject to liquefaction. 3.2 Graded Conditions Aerial photos and research suggest that this is a fill lot. The was site originally rough graded between 1998 and 2007 according to the Petra report ( see section 3.3) The site was regraded in 2017. The site is located on small plateau that was excavated and filled in during grading. See figure 6. Figure 6 This photo from Google Earth taken in May of 1994 shows the site before grading, as being located on a landslide the flowed into a valley. Figure 7 is the as graded lot conditions and shows that this lot is a fill lot. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 12 Figure 7 Topography from CGS (gray) and USGS (maroon) with pad elevation from Google Earth. The cross-sections are shown in figure 8 and 9. Section AA’ would be north-south and section BB’ would be west-east. The original ground elevation on the lot was between 259’ and 275’, according to the California Geological Survey website. Allowing for topsoil, colluvium, and weathered bedrock removals the depth of over excavation (~4’) would be to the elevation of 255’. The pad has an elevation of 283’, this would put the pool bottom on fill at the elevation 277.5’ or a maximum depth of 5’ 6” feet. The pool will rest in fill. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 13 Figure 8 Cross sections AA' Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 14 Figure 9 Cross-section BB' 3.2 Excavation and Temporary stability The excavation is anticipated to expose compacted fills from the Capistrano Formation (landslide debris) . This material would be very similar in lithology to the Capistrano Formation derived fills. The compacted fill material may be excavated with conventional equipment. The excavation will be stable for periods long enough to install steel and gunite provides no excessive delays (many months) are experienced. The excavation is exempt from OSHA regulations. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 15 3.3 Site Research The City of San Juan Capistrano has been contacted to obtain soils and grading reports. Report reviewed as part of this work include: “Geotechnical Report of Precise Grading, Tract No. 15609, Lots 1 through 20 (Production Lots), The Peninsula, San Juan Pacifica Project, City of San Juan Capistrano, California” October 3, 2017 by Petra Geosciences 3.4 Anticipated future Settlement Based on the as grade configuration of the lot the depth of fill and configuration of the fill anticipated future settlement is expected to be uniform. It is our evaluation that total vertical settlement will be 1-inch or less and differential settlement of less than 1/2-inch over 40-feet could be anticipated. 3.5 Site Stability Orange county contains many deep seated landslides that failed in the past. Often as is the case herein these bedrock landslides into valleys and canyons that were substantially lower in elevation than valleys that exist today. This is because at the time of failure, (15,000-30,000 ybp) the seal level was much lower. As time progressed the cayons and valleys were subsequently infilled with alluvium. These alluvium deposits have formed a natural buttress of over the lower elevations of the landslide and the landslide toe. This has resulted in an, increasing the factor of Safety for these landslides. Hence this slide is considered stable. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 16 4.0 CONCLUSIONS ü The site is suitable for the purpose of building pool provided the recommendations included here in and the requirements of the 2019 CBC are satisfied and the County of Orange codes. ü The site is not exhibiting any significant form of soils movement ü The pool that is proposed for the site is appropriate and can be safely constructed provided the accompanying recommendations are followed. ü The excavation of the pool will not adversely affect the site or neighboring sites and infrastructure ü Excavation can be accomplished with conventional equipment ü The excavations will be stable ü The ancient landslide that will not be affected by the proposed pool. ü The site is not in an Alquist-Priolo special studies zone ü No indications of slope instability were noted ü Evidence of high groundwater or perched groundwater was not observed ü Temporary stability of the pool excavation walls is not anticipated to be a problem ü Maximum depth of excavation is expected to be about 6 feet 5.0 DESIGN RECOMMENDATIONS Ø The pool should be designed for highly expansive soils 100 pcf. Ø The geotechnical consultant should review the plans. Ø The consultant should either sign the plans directly or issue a signed letter indicating the plans have been reviewed and are consistent with these recommendations Ø All concrete including shotcrete and gunite should utilize Type V Cement with maximum 0.45-water/cement ratios in accordance with California Building Code Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 17 (CBC) Standards 1904.3.1. Concrete mix design, materials, placement, curing, and finishing should be in conformance with the standard specifications for public works construction “Green book”, and American Concrete Institute (ACI) specifications. Ø All cement concrete and shotcrete used shall be type V 4500 psi. Ø The pool shall be fitted with a hydrostatic relieve valve. Ø Decking should be reinforced with a minimum of #4 bars at 12 inches on center in both directions. The edges of the decking should be thickened and deepened to aid in the control of cracking in the decks Additional inspections: The excavation for the pool shall be reviewed and approved by an engineering geologist prior to placement of steel. 5.1 Drainage Maintaining a function drainage system is extremely important to aid in the minimization of slope and expansive soils movement. The onsite drainage in the patios should be inspected and tested. The pool deck drainage may be introduced to this system, if the system is functioning properly and free of any obstructions. The existing on-site drainage should be tested to make sure it is operative. The pool deck will require additional drainage inlets as indicated in the accompanying recommendations. The site should be drained to provide for position drainage away from structure in conformance with the applicable building codes and local requirements. Corrugated plastic pipe is not allowed. All drainage pipes shall be schedule 40 PVC or Abs equivalent. If there are no roof gutters that drain to conduits that exit in the street, then these should be added to the house. If Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 18 there are yard drains that exit to the street these should be inspected for function and repaired if/as needed. Any roof gutters and deck drains should be tied into the drainage system. This whole system should then empty into the street or as required by the County of Orange. An inlet should be provided for every 100 square feet of area drained in the deck Drainage should be directed away from structures via non-erodible conduits to suitable disposal areas. Five percent drainage is recommended directly away from the structures. At least two percent minimum is recommended for drainage over soil areas. In pipes or paved swales, one percent should be adopted as the minimum. All enclosed planters should be provided with a suitably located drain or drains and/or flooding protection in the form of weep holes or similar. The Project Civil Engineer is responsible for design of the site drainage. No drainage shall be permitted to run over the slope. Drainage that must exit over the slope shall be confined to anon- erodible pipe and directed to an acceptable collection point for discharge into the public drainage system. 5.2 Concrete Deck and Walkways The slab concrete should have a maximum water/cementatious materials ratio of 0.45. The deck should also use type V-4500 psi concrete. This will help to minimize the potential for shrinkage cracks and moisture vapor migration through the slab. It should be understood that by nature concrete cracks and the appearance of a few finer cracks may appear in the slab and that this will not necessarily indicate a problem. Concrete cracks should be expected. These cracks can vary from sizes that are essentially unnoticed to more than 1/8 inch in width. Most cracks in concrete while unsightly do not significantly impact long-term performance. While it is possible to take measures (proper concrete mix, placement, curing, control joints, etc.) to reduce the extent and size of cracks that occur, some cracking will occur despite the best efforts to minimize it. Concrete undergoes chemical processes that are dependent on a wide range of variables, which Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 19 are difficult, at best, to control. Concrete while seemingly a stable material also is subject to internal expansion and contraction due to external changes over time. v Minimum Slab Reinforcement ...................................... #4 rebar at 12” on center each way v The slabs shall be underlain with 2 inches of sand 5.3 Additional Considerations The following items are additional steps that can be taken to enhance the long-term technical performance of the decking on site. These are considered optional and reduce the risk of concrete cracking. o The perimeter of the deck should be 8 inches in thickness, 12 inches in width and reinforced with 2 # 4 bars that outline the decks and walkways. This additional step will help to prevent shrinkage in the concrete and the future penetration of roots from adjacent vegetation. o A vapor retarder may be used to aid in the prevention of salt deposits forming on the deck surface due to evaporation. This is an optional recommendation, if used it should consist of a minimum of a 10-mil product. The vapor retarder should be properly lapped or otherwise sealed at all splices and properly sealed at all penetrations 5.4 Project Safety The Contractor is the party responsible for providing safe site. The Geotechnical consultant will not direct the Contractor’s operations and will not be responsible for the personnel safety other than the consultant’s representatives at the site. The Contractor is responsible to notify the project owner should he be aware and/or anticipate any unsafe conditions. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 20 6.0 PLAN REVIEW, CONSTRUCTION OBSERVATION, and TESTING Pacific Coast Land Consulting should be retained to review final pool plans and specifications for conformance with the intent of our recommendations. Pacific Coast Land Consulting should be retained to review the excavation and geologic conditions. The review will enable us to modify the recommendations if final design the excavation and exposed geologic conditions grading, and conditions are different than presently understood. During construction, Pacific Coast Land Consulting should be retained to consult on geotechnical questions, construction problems, and unanticipated conditions. We should provide field observation to check that the site preparation, foundation installation, and grading conforms to the intent of these recommendations and to the project plans and specifications. This would allow us to develop supplemental recommendations as appropriate for the actual soil conditions encountered and the specific construction techniques used by the contractor. The recommendations presented in the preceding sections need to be checked based on the actual field conditions. The sections below provide recommendations for the continuation of the design process through construction. The recommendations presented in the preceding sections need to be checked based on the actual field conditions. The sections below provide recommendations for the continuation of the design process through construction. Ø Issuing Notices of Compliance prior to placement of foundation concrete. Ø Issuing final reports. Ø At any time, the city requires any inspection Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 21 In accordance with CBC Chapter 17, Section 1704A, Pacific Coast Land Consulting cannot assume responsibility or liability for the adequacy of recommendations if we do not observe construction. 7.0 LIMITATIONS This report has been prepared for this project in accordance with generally accepted geotechnical engineering practices common to the local area. No other warranty, expressed or implied, is made as to the conclusions and recommendations included in this report. The analyses and recommendations presented in this report are based on the literature review, field investigation and laboratory testing conducted in the area as well as on our experience and judgment. The results of the field investigation indicate surface conditions only at the specific locations and times of our investigation, and only to the depths explored. They do not necessarily reflect strata variation that may exists between such locations. The recommendations and other information presented in this report are based on assumption that subsurface conditions do not vary appreciably between and adjacent to our observation points. Observations during construction can help to confirm such assumptions. If different conditions are encountered during construction, recommendations presented in this report will be re- evaluated and modified as necessary. Pacific Coast Land Consulting should be retained to provide construction services for the project in order to help confirm the validity of our assumptions and recommendations and to modify them if it becomes necessary. Pacific coast land consulting Engineering Geologic Services 1852 Lilac Court Carlsbad, CA 92011 TEL (760) 473-4117-Email Rnkjeffery@SBCGlobal.net www.PacificCoastLandConsulting.net 22 In accordance with CBC Chapter 17, Section 1704A, Pacific Coast Land Consulting cannot assume responsibility or liability for the adequacy of recommendations if we do not provide construction services.This report has been prepared for the exclusive use and benefit of our client.