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HomeMy WebLinkAboutGeotechnical Rpt Lots 39-95 8/27/2002-0 0 0 V L-P,'�YIYL- 1 PETRA OFFICES THROUGHOUT SOUTHERN CALIFORNIA ' August 27, 2002 J.N. 188-01 ' BGR No. 010340 RICHMOND AMERICAN HOMES ' 104 West Grand Avenue, Suite A Escondido, California 92025 ' Attention: Mr. Gary McCoy Subject: Geotechnical Report of Rough Grading, Lots 39 through 95, Tract 23066-3, Temecula Area, Riverside County, California ' PETRA GEOTECHNICAL, INC. 41640 Corning Place . Suite 107 . Murrieta . CA 92562 . Tel: (909) 600-9271 . Fax: (909) 600-9215 This report presents a summary of the observation and testing services provided by Petra Geotechnical, Inc. (Petra) during rough -grading operations to complete the ' development of Lots 39 through 95 within Tract 23066-3 located in the Temecula area of Riverside County, California- Conclusions and recommendations pertaining to the ' suitability of the grading for the proposed residential construction are provided herein, as well as foundation -design recommendations based on the as -graded soil conditions. tPreliminary rough -grading within the golf-course/tract interface was performed within the subject tract in 1989 through 1990 under the purview of Petra. Petra reported on the interface grading in a report issued in December 2001 (see References). REGULATORY COMPLIANCE Cuts, removals and recompaction of unsuitable low-density surface soils, lot ' overexcavations and placement of compacted fill under the purview of this report have been completed under the observation and with selective testing by Petra. The ' earthwork was performed in accordance with. the recommendations presented in ' PETRA GEOTECHNICAL, INC. 41640 Corning Place . Suite 107 . Murrieta . CA 92562 . Tel: (909) 600-9271 . Fax: (909) 600-9215 I 1 C 1 1 1 RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 2 previous geotechnical reports by Petra (see References) and the Grading Code of the County of Riverside. The completed earthwork has been reviewed and is considered adequate for the construction now planned. On the basis of our observations, as well as field and laboratory testing, the recommendations presented in this report were prepared in conformance with generally accepted professional engineering practices and no further warranty is implied nor made. SUMMARY OF AS -GRADED SOIL. AND GEOLOGIC CONDITIONS As -Graded Conditions Remedial grading during the 1989 and 1990 interface grading generally involved the removal and recompaction of low-density surficial soils that included alluvial and colluvial soils subject to hydrocollapse or excessive consolidation, as well as near - surface weathered bedrock materials. Remedial grading of the site at that time consisted of removal and recompaction of all low-density surficial material, removal of haul roads and loose end -dumped fill piles. Remedial grading during the recent phase of rough grading included similar removals plus surficial overexcavation and recompaction, on the order of up to 2 to 4 feet. Remedial grading also included overexcavation of the cut portions of cut/fill transition lots. The compacted fills range in depth from approximately 3 to 58 feet. A lot -by -lot summary of the compacted -fill depths and a summary of soil conditions is presented in the attached Table I. A general description of the soil and bedrock materials underlying the subject tract is provided below. • Compacted Engineered Fill (map symbol afc) — The compacted -fill soils placed in 1989 through 1998 generally consist of silty sand and sandy silt with variable clay. The compacted -fill soils placed in 2002 are also comprised of onsite -derived Ea I I 1 I I 1 1 1 1 1 1 RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 3 soil and bedrock materials and generally consist of fine- to coarse-grained sand, silty sand and clayey sand. Pauba Formation Bedrock (Ons) — The Pauba Formation consists of dense, fine- grained and well -graded sandstones, clayey sandstone and clay beds with occasional gravel and cobble beds. A cross -bedded, well -graded sand unit is contained within the Pauba Formation. SUMMARY OF EARTHWORK OBSERVATIONS AND DENSITY TESTING Clearing and Grubbing At the time of grading, a majority of the tract was covered with a light growth of grasses and weeds. This light vegetation was removed during overexcavation to existing grades and mixed with the excavated soils in an acceptable manner (i.e., the resultant blend contained less than 1 percent organic materials). Heavy vegetation that existed in local areas, as well as some construction debris, were removed from the site. Ground Preparation 1988 - 1990 - During the interface grading perforated in 1989 and 1990, unsuitable soils were removed and replaced with compacted fill. Removal of unsuitable soils was performed to facilitate future grading by eliminating the need to encroach into the completed golf -course fairways during final rough grading of the subject tract. Removal of unsuitable soils extended laterally into the subject tract at a I:1 (horizontal: vertical [h:vl) projection from the proposed toe -of -slopes to the bottom of the overexcavation in order to provide sufficient lateral support for the embankment fills. As a result of the removals, the alluvial soils anticipated to be subject to hydrocollapse or excessive consolidation that existed within the broader valley areas were removed. In areas to receive compacted fill, all deposits of existing low-density surficial soils (slopewash and alluvium) were removed to competent bedrock. In general, removal of unsuitable surficial materials varied from approximately 3 to 10 feet below the original ground surface. All removals were also extended into adjacent street areas to receive compacted fill. • 2002 -Prior to placing structural fill, existing low-density surficial soils were first removed to competent unweathered bedrock, or previously placed compacted -fill VAI I ' RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area I.N. 188-01 ' Page 4 ' materials. Removals throughout the lots varied from approximately 3 to 8 feet. Previously compacted -fill materials exposed in removal areas exhibited an in-place minimum relative compaction of 90 percent. ' Prior to placing fill, exposed bottom surfaces in all removal areas were first observed ' and approved by our project geologist or senior soil technician. Following this approval, the exposed bottom surfaces were scarified to depths of approximately 6 to ' 8 inches, watered or air-dried as necessary to achieve a moisture content equal to or slightly above optimum moisture content and then recompacted in-place to a minimum ' relative compaction of 90 percent or 95 percent where fill thickness exceeds 50 feet. 1 L 7 J 1 I Lot Overexcavations To mitigate distress to residential structures related to the potential adverse effects of excessive differential settlement, the cut portion of cut/fill transition lots were overexcavated to a minimum depth of 3 feet below finish grade and replaced with compacted fill. Cut lots on which expansive clay beds were exposed at grade were also overexcavated on the order of 8 feet to minimize the effect of expansive soils. Canyon Subdrains Canyon subdrains were placed in areas where the depth of structural fill exceeded 15 feet. Subdrains consisted of 6- to 8 -inch diameter PVC pipe with perforations placed down. The pipe was surrounded by 0.75 inch gravel and wrapped in filter fabric (Mirafi 140 or equivalent). Subdrain locations are provided on Plates 1 and 2. The subdrains are outletted to the golf course at the toe -of -slope near Lots 57, 83 and 109. S I 1 1 J 1 n �J I I r -- L] 1 I 11 RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 5 Fill Placement and Testing All fill soils were placed in lifts restricted to approximately 6 to 8 inches in maximum thickness, watered or air-dried as necessary to achieve near -optimum moisture conditions and then compacted in-place to a minimum relative compaction of 90 percent based on ASTM Test Method D1557. Compaction was achieved by wheel - rolling with an 824 rubber -tired dozer and loaded scrapers. The maximum vertical depth of fill placed within the subject lots is approximately 58 feet on Lot 92. Field density and moisture content tests were performed in accordance with nuclear - gauge test methods ASTM Test Methods D2922 and D3017. Occasional field density tests were also performed in accordance with the sandcone method ASTM Test Method D1556. Field density test results for 1989 and 2002 are presented on the attached Tables Il and 111, respectively, and approximate test locations are shown on the enclosed Geotechnical Map with Density Test Locations (Plates 1 and 2). Field density tests were taken at vertical intervals of approximately 1 to 2 feet and the compacted fills were tested at the time of placement to verify that the specified moisture content and minimum required relative compaction of 90 percent had been achieved or 95 percent relative compaction where fill thickness exceeds 50 feet. At least one in-place density test was taken for each 1,000 cubic yards of fill placed and/or for each 2 feet in vertical height of compacted fill. The actual number of tests taken per day varied with the project conditions, such as the number of earthmovers (scrapers) and availability of support equipment. When field density tests produced results less than the required minimum relative compaction of 90 percent or if the soils were found to be excessively above or below optimum moisture content, the approximate limits of the substandard fill were established. The substandard area was then either removed or reworked in-place. 2- I 1 1 1 1 1 1 1 1 1 1 I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 6 Visual classification of earth materials in the field was the basis for determining which maximum dry density value was applicable for a given density test. Single -point checks were performed to supplement visual classification. Fill Slopes All fill slopes were constructed at a maximum ratio of 2:1 (h:v) and to a maximum height of approximately 40 feet. All fill slopes were overfilled an average of 4 to 5 feet during construction and then trimmed back to the compacted core. The fill slopes are considered grossly and surficially stable to the heights and inclinations at which they are constructed. Fill keys were constructed along the toe -of -slope at the tract/golf-course interface within Lots 64 through 66 and 74 through 77. The keys were 15 to 25 feet wide and were 5 feet deep. Cut Slopes All cut slopes expose competent Pauba Formation bedrock and were constructed at a maximum ration of 2:1 (h:v) and to a maximum height of 22 feet (Lot 73). The cut slopes are considered grossly and surficially stable to the heights and inclinations at which they are constructed. LABORATORY TESTING Maximum Dry Density Maximum dry density and optimum moisture content for each change in soil type observed during grading were determined in our laboratory in accordance with ASTM Test Method D1557. Pertinent test values for each phase of grading (1989 and 2002) are summarized in Appendix A. F, \✓ 2 I I 1 F 1 [1 RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 7 Expansion Index Tests Expansion index tests were performed on representative samples of soil existing at or near finish -pad grade within the subject lots. These tests were performed in accordance with ASTM Test Method D4829. Test results are also summarized in Appendix A. Atterberg Limits Atterberg limits were determined for selected soil samples per ASTM Test Method D4318. Test results are presented in Appendix A. Soluble Sulfate Analyses Soluble sulfate analyses were determined for representative samples of soil existing at or near finish grade within the subject lots. These tests were performed in accordance with California Test Method No. 417. Test results are summarized in Appendix A. Chloride, Resistivity and pH Analyses Water-soluble chloride concentration, resistivity and pH were determined for selected samples in accordance with California Test Method Nos. 422 (chloride) and 643 (resistivity and pH). The results of these analyses are summarized in Appendix A. FOUNDATION -DESIGN RECOMMENDATIONS Foundation Types Based on as -graded soil and geologic conditions, the use of conventional slab -on - ground foundations is considered feasible for the proposed residential structures. Recommended design parameters are provided herein. 2 I 1 [] 1 1 1 1 1 1 1 RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 8 Allowable Soil -Bearing Capacities ities An allowable soil -bearing capacity of 1,500 pounds per square foot (psf) may be used for 24 -inch square pad footings and 12 -inch wide continuous footings founded at a minimum depth of 12 inches below the lowest adjacent final grade. This value may be increased by 20 percent for each additional foot of width or depth, to a maximum value of 2,500 psf. Recommended allowable soil -bearing values include both dead and live loads and may be increased by one-third when designing for short -duration wind and seismic forces. Anticipated Settlement Based on the general settlement characteristics of the compacted fill soils, as well as the anticipated loading, it has been estimated that the maximum total settlement of building footings will be less than approximately 0.75 inch. Maximum differential settlement over a horizontal distance of 30 feet is expected to be about one-half the total settlement. The maximum anticipated differential settlement of 0.38 inch in 30 feet may be expressed as an angular distortion of 1:960. Lateral Resistance A passive earth pressure of 250 psf per foot of depth to a maximum value of 2,500 psf may be used to determine lateral -bearing resistance for building footings. Where structures such as masonry block walls and retaining walls are planned on or near descending slopes, the passive earth pressure should be reduced to 150 psf per foot of depth to a maximum value of 1,500 psf. In addition a coefficient of friction of 0.40 times the dead -load forces may also be used between concrete and the supporting soils to determine lateral -sliding resistance. An increase of one-third of the above values may also be used when designing for short -duration wind and seismic forces. I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 d 1 RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 9 The above values are based on footings placed directly against compacted fill. In the case where footing sides are formed, all backfill against the footings should be compacted to a minimum of 90 percent of maximum dry density. For foundations founded in cut areas of Pauba Formation, the coefficient of friction should be 0.30. Footing Observations All footing trenches should be observed by a representative of Petra to verify that they have been excavated into competent -bearing soils and to the minimum embedments recommended herein. The foundation excavations should be observed prior to the placement of forms, reinforcement or concrete. The excavations should be trimmed neat, level and square. All loose, sloughed or moisture -softened soil and any construction debris should be removed prior to placing concrete. Excavated soils derived from footing and utility -trench excavations should not be placed in slab -on -ground areas unless the soils are compacted to a minimum of 90 percent of maximum dry density. Expansive Soil Considerations Results of laboratory tests indicate onsite soil and bedrock materials exhibit VERY LOW, LOW and MEDIUM expansion potentials as classified in accordance with 1997 Uniform Building Code (UBC) Table 18 -I -B. A lot -by -lot breakdown for the different levels of expansion is provided below. • Very Low Expansion Potential - Lots 39 through 41, 44 through 61, 67, 68, 74 through 78, 80 through 82, 84 through 88 and 92 through 95 • Low Expansion Potential - Lots 42, 43, 62 through 66, 68, 71, 72, 79 and 83 • Medium Expansion Potential — Lots 69, 70, 73 and 89 through 91 -IX9 -2 3 &-� Zo 6 - /j - 'OP7 j __9 It ►a I 1 I] 1 1 1 L1 1 1 I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 10 Design and construction details for the various levels of expansion potential are provided in the following sections. Very Low Expansion Potential (Expansion Index of 20 or less) The following recommendations pertain to as -graded lots where the foundation soils exhibit a VERY LOW expansion potential as classified in accordance with 1997 UBC Table 18 -I -B. For soils exhibiting expansion indices of less than 20, the design of slab -on -ground foundations is exempt from the procedures outlined in 1997 UBC Section 1815. Based on this soil condition, it is recommended that footings and floors be constructed and reinforced in accordance with the following minimum criteria. However, additional slab thickness, footing sizes and/or reinforcement should be provided as required by the project architect or structural engineer. • Footines Exterior continuous footings may be founded at the minimum depths indicated in 1997 UBC Table 18-1-C (i.e., 12 -inch minimum depth for one-story and I8 - inch minimum depth for two-story construction). Interior continuous footings for both one- and two-story construction may be founded at a minimum depth of 12 inches below the lowest adjacent grade. All continuous footings should have a minimum width of 12 and 15 inches, for one- and two-story buildings, respectively and should be reinforced with two No. 4 bars, one top and one bottom. Exterior pad footings intended for the support of roof overhangs, such as second -story decks, patio covers and similar construction, should be a minimum of 24 inches square and founded at a minimum depth of 18 inches below the lowest adjacent final grade. No special reinforcement of the pad footings will be required. • Floor Slabs - Living -area concrete -floor slabs should be 4 inches thick and reinforced with either 6 -inch by 6 -inch, No. 6 by No. 6 welded -wire fabric (6x6-W2.9xW2.9 WWF) or with No.3 bars spaced a maximum of 24 inches on center, both ways. it I RICHMOND AMERICAN HOMES August 27, 2002 ' TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 11 ' All slab reinforcement should be supported on concrete chairs or bricks to ensure the desired placement near mid -depth. Living -area concrete -floor slabs should be underlain with a moisture -vapor barrier consisting of a polyvinyl chloride membrane, such as 6 -mil Visqueen or equivalent. All laps within the membrane should be sealed and at least 2 inches ' of clean sand be placed over the membrane to promote uniform curing of the concrete. ' Garage -floor slabs should be 4 inches thick and should be reinforced in a similar manner as living -area floor slabs. Garage -floor slabs should also be placed separately from adjacent wall footings with a positive separation maintained 1 with 3/8 -inch minimum, felt expansion joint materials and quartered with weakened -plane joints. A 12 -inch wide grade beam founded at the same depth as adjacent footings should be provided across garage entrances. The grade ' beam should be reinforced with a minimum of two No. 4 bars, one top and one bottom. ' - Prior to placing concrete, the subgrade soils below all concrete slab -on -ground should be prewatered to promote uniform curing of the concrete and minimize ' the development of shrinkage cracks. ' Low Expansion Potential (Expansion Index of 21 to 50) The following recommendations pertain to as -graded lots where the foundation soils ' exhibit a LOW expansion potential as classified in accordance with 1997 UBC Table 18-1-B. The 1997 UBC specifies that slab -on -ground foundations (floor slabs) resting on soils with an expansion index greater than 20 require special design considerations in accordance with 1997 UBC Section 1815. The design procedures ' outlined in 1997 UBC Section 1815 are based on the thickness and plasticity index of each different soil type existing within the upper 15 feet of the building site. For final design purposes we have assumed an effective plasticity index of 12 in accordance with 1997 UBC Section 1815.4.2. 1 � 1 [2 I 1 1 I 1 11 I 11 11 1 I I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 12 The design and construction recommendations that follow are based on the above soil conditions and may be considered for minimizing the effects of slightly (LOW) expansive soils. These recommendations have been based on the previous experience of Petra on projects with similar soil conditions. Although construction performed in accordance with these recommendations has been found to minimize post -construction movement and/or cracking, they generally do not positively mitigate all potential effects of expansive soil action. The owner, architect, design civil engineer, structural engineer and contractors must be made aware of the expansive -soil conditions which exist at the site. Furthermore, it is recommended that additional slab thicknesses, footing sizes and/or reinforcement more stringent than recommended below be provided as required or specified by the project architect or structural engineer. • Footines - Exterior continuous footings may be founded at the minimum depths indicated in 1997 UBC Table 18 -I -C (i.e., 12 -inch minimum depth for one-story and 18 - inch minimum depth for two-story construction). Interior continuous footings for both one- and two-story construction may be founded at a minimum depth of 12 inches below the lowest adjacent grade. All continuous footings should have a minimum width of 12 and 15 inches, for one- and two-story buildings, respectively and should be reinforced with two No. 4 bars, one top and one bottom. - Exterior pad footings intended for the support of roof overhangs, such as second -story decks, patio covers and similar construction, should be a minimum of 24 inches square and founded at a minimum depth of 18 inches below the lowest adjacent final grade. The pad footings should be reinforced with No. 4 bars spaced a maximum of 18 inches on centers, both ways, near the bottom - third of the footings. • Floor Slabs - The project architect or structural engineer should evaluate minimum floor -slab thickness and reinforcement in accordance with 1997 UBC Section 1815 based on an effective plasticity index of 12. Unless a more stringent design is recommended by the architect or the structural engineer, we recommend a Ea `Y I ' RICHMOND AMERICAN HOMES August 27, 2002 ' TR 23066-3 Lots 39-95/Temecula Area I.N. 188-01 Page 13 minimum slab thickness of 4 inches for both living -area and garage -floor slabs and reinforcing consisting of either 6 -inch by 6 -inch, No. 6 by No. 6 welded - wire fabric (60-W2.9xW2.9 WWF) or No. 3 bars spaced a maximum of 18 inches on centers, both ways. All slab reinforcement should be supported on concrete chairs or bricks to ensure the desired placement near mid -height. ' Living -area concrete -floor slabs should be underlain with a moisture -vapor barrier consisting of a polyvinyl chloride membrane, such as 6 -mil Visqueen or equivalent. All laps within the membrane should be sealed and at least 2 inches ' of clean sand be placed over the membrane to promote uniform curing of the concrete. ' Garage -floor slabs should also be placed separately from adjacent wall footings with a positive separation maintained with 3/8 -inch minimum, felt expansion - joint materials and quartered with weakened -plane joints. A 12 -inch wide grade ' beam founded at the same depth as adjacent footings should be provided across garage entrances. The grade beam should be reinforced with a minimum of two ' No. 4 bars, one top and one bottom. Prior to placing concrete, the subgrade soils below all living -area and garage - floor slabs should be pre -watered to achieve a moisture content that is at least equal to or slightly greater than optimum -moisture content. This moisture content should penetrate to a minimum depth of 12 inches into the subgrade soils. Medium Expansion Potential (Expansion Index of 51 to 901 The following recommendations pertain to as -graded lots which exhibit a MEDIUM expansion potential as classified in accordance with 1997 UBC Table 18 -I -B. The 1997 UBC specifies that slab -on -ground foundations (floor slabs) on soils with an expansion index greater than 20 require special design considerations in accordance with 1997 UBC Section 1815. The design procedures outlined in 1997 UBC ' Section 1815 are based on a plasticity index of the different soil layers existing within the upper 15 feet of the building site. Based on subsurface stratigraphy and distribution tof the different soil types, we have assumed an effective plasticity index of 17 in accordance with 1997 UBC Section 1815.4.2. n /I f i iJ I I I 1 1 I 1 RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 14 The design and construction recommendations that follow are based on the above soil conditions and may be considered for minimizing the effects of moderately expansive soils. These recommendations have been based on the previous experience of Petra on projects with similar soil conditions. Although construction performed in accordance with these recommendations has been found to minimize post -construction movement and/or cracking, they generally do not positively mitigate all potential effects of expansive soil action. The owner, architect, design civil engineer, structural engineer and contractors must be made aware of the expansive -soil conditions which exist at the site. Furthermore, it is recommended that additional slab thicknesses, footing sizes and/or reinforcement more stringent than recommended below be provided as required or specified by the project architect or structural engineer. ' • Footines - Exterior continuous footings for both one- and two-story construction should be founded at a minimum depth of 18 inches below the lowest adjacent final grade. Interior continuous footings may be founded at a minimum depth of 12 inches below the lowest adjacent grade for both one- and two-story construction. All ' continuous footings should have a minimum width of 12 and 15 inches, for one - and two-story buildings, respectively, and should be reinforced with two No. 4 bars, one top and one bottom. ' - Exterior pad footings intended for the support of roof overhangs, such as second story decks, patio covers and similar construction, should be a minimum of 24 ' inches square and founded at a minimum depth of 18 inches below the lowest adjacent final grade. The pad footings should be reinforced with No. 4 bars spaced a maximum of 18 inches on centers, both ways, near the bottom one- ' third of the footings. ' Floor Slabs The project architect or structural engineer should evaluate minimum floor -slab thickness and reinforcement in accordance with 1997 UBC Section 1815 based on an effective index of 17. Unless a more stringent design is plasticity recommended by the architect or the structural engineer, we recommend a ' minimum slab thickness of 4 inches for both living -area and garage -floor slabs 2 /s I RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 15 1 and reinforcing consisting of No. 3 bars spaced a maximum of 18 inches on centers, both ways. All slab reinforcement should be supported on concrete chairs or bricks to ensure the desired placement near mid -height. I 11 I 1 1 1 I I I I I 1 I I - Living -area concrete -floor slabs should be underlain with a moisture -vapor barrier consisting of a polyvinyl chloride membrane, such as 6 -mil Visqueen or equivalent. All laps within the membrane should be sealed and at least 2 inches of clean sand be placed over the membrane to promote uniform curing of the concrete. - Garage -floor slabs should also be placed separately from adjacent wall footings with a positive separation maintained with 3/8 -inch -minimum, felt expansion - joint materials and quartered with weakened -plane joints. A 12 -inch -wide grade beam founded at the same depth as adjacent footings should be provided across garage entrances. The grade beam should be reinforced with a minimum of two No. 4 bars, one top and one bottom. - Prior to placing concrete, the subgrade soils below all living -area and garage - floor slabs should be pre -watered to achieve a moisture content that is 5 percent or greater than optimum -moisture content. This moisture content should penetrate to a minimum depth of 18 inches into the subgrade soils. POST -TENSIONED SLABS In lieu of the preceding recommendations for conventional footings and floor slabs, post -tensioned slabs may be used. The actual design of post -tensioned slabs is referred to the project structural engineer who is qualified in post -tensioned slab design, using sound engineering practices. The post -tensioned slab -on -ground should be designed in general conformance with the design specification os 1997 UBC Section 1816. Alternate designs are allowed per 1997 UBC Section 1806.2 that addresses the effects of expansive soils when present. However, to assist the structural engineer in his design, the following parameters are recommended. M2 F r I I I I I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 16 Eaparisiowlndex ,,, - - Yery Lar and Low ((1 to s(l) ' Dledium 15140 9fr% Assumed percent clay 30 70 Clay type Momma illomte Apioximate depth of constant suction (feel) 70 70 Approximate soil suction (pp) 3 6 3 6 Approximate velocity til moisture Flow lurches/month) 07 0.7 Thomwaite Index -20 -20 Average edge Nloistwe variation depth, q„ (feet) Center lift 46 i 3 Edge lift 2 2 3 7 Anticipated well, y„ (Inches) Center lift 14 32 Cd -e lilt 03 I I • Perimeter footings for either one- or two-story dwellings may be founded at a minimum depth of 12 inches below the nearest adjacent final -ground surface. h Interior footings may be founded at a minimum depth of 12 Inches below the top rl ofthe finish -floor slab. • All dwelling -area floor slabs constructed on -ground should be underlain with a moisture -vapor barrier consisting of a polyvinyl chloride membrane, such as 6 -mil Visquccn. A minimum of I inch of clean sand should be placed over the membrane to promote unifom1 curing of the concrete. • Presaturation of subgrade soils below slabs -on -ground will not be required. However, all subgrade soils should be thoroughly moistened prior to placing concrete. • The design modulus of subgrade reaction (k) should be 300 tons per cubic foot. SEISMIC -DESIGN CONSIDERATIONS Ground Motions Structures within the site should be designed and constructed to resist the effects of seismic ground motions as provided in 1997 UBC Sections 1626 through 1633. The W /7 lJ [1 I I I I I 1 [1 u I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 17 method of design is dependent on the seismic zoning, site characteristics, occupancy category, building configuration, type of structural system and on the building height. For structural design in accordance with the 1997 UBC, a computer program developed by Thomas F. Blake (UBCSEIS, 1998/1999) was utilized which compiles fault information for a particular site using a modified version of a data file of approximately 183 California faults that were digitized by the California Division of Mines and Geology and the U.S. Geological Survey. This program computes various information for a particular site including the distance of the site from each of the faults in the data file, the estimated slip -rate for each fault and the "maximum moment magnitude" of each fault. The program then selects the closest Type A, Type B and Type C faults from the site and computes the seismic design coefficients for each of the fault types. The program then selects the largest of the computed seismic design coefficients and designates these as the design coefficients for the subject site. Based on the computer generated data using UBCSEIS, the Elsinore -Julian (Type A) segment of the Elsinore fault zone, located approximately 12.1 kilometers from the site, could generate severe site ground motions with an anticipated maximum moment magnitude of 7.1 and anticipated slip rate of 5.0 nim/year. However, the closest Type B fault which is the Elsinore -Temecula fault located 1.3 kilometers to the southwest of Tract 23066-3 would probably generate the most severe site ground motions with an anticipated maximum moment magnitude of 6.8 and anticipated slip rate of 5.0 nim/year. Based on our evaluation using UBCSEIS, the following 1997 UBC seismic design coefficients are recommended for the proposed residential structures. These criteria are based on the soil profile type as determined by existing subsurface geologic conditions, on the proximity of the Elsinore -Temecula fault and on the maximum moment magnitude and slip rate. I L I I I 11 1 1� I� \J J Ll I 1 LJ I I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 18 SOIL CHEMISTRY Laboratory test results indicate onsite soils contain negligible soluble -sulfate contents. As such, concrete in contact with soil may utilize Type I or II Portland cement. The laboratory test data for chloride concentration, resistivity and pH indicate onsite soils may be moderately corrosive to buried steel in direct contact with onsite soils. RETAINING WALLS Footing Embedments The base of retaining -wall footings constructed on level ground may be founded at a minimum depth of 12 inches below the lowest adjacent final grade. Where retaining walls are proposed on or within 15 feet from the top of any adjacent descending fill slope, the footings should be deepened such that a minimum horizontal setback of H/3 (one-third the slope height) is maintained between the outside bottom edges of the footings and the slope face; however, the minimum footing setback should be 5 feet. The above -recommended minimum footing setbacks are preliminary and may require revision based on site-specific soil and/or bedrock conditions. All footing trenches Cd /y 1997 UBC TABLE FACTOR Figure 16-2 Seismic Zone 4 16-I Seismic Zone Factor Z 0.4 16-U Seismic Source Type B 16-J Soil Profile Type So 16-S Near -Source Factor N, 1.3 16-T Near -Source Factor N, 1 6 16-Q Seismic Coefficient C. 0.44 N, = 0.57 16-R Seismic Coefficient C 0.64 N = 1.02 SOIL CHEMISTRY Laboratory test results indicate onsite soils contain negligible soluble -sulfate contents. As such, concrete in contact with soil may utilize Type I or II Portland cement. The laboratory test data for chloride concentration, resistivity and pH indicate onsite soils may be moderately corrosive to buried steel in direct contact with onsite soils. RETAINING WALLS Footing Embedments The base of retaining -wall footings constructed on level ground may be founded at a minimum depth of 12 inches below the lowest adjacent final grade. Where retaining walls are proposed on or within 15 feet from the top of any adjacent descending fill slope, the footings should be deepened such that a minimum horizontal setback of H/3 (one-third the slope height) is maintained between the outside bottom edges of the footings and the slope face; however, the minimum footing setback should be 5 feet. The above -recommended minimum footing setbacks are preliminary and may require revision based on site-specific soil and/or bedrock conditions. All footing trenches Cd /y I 11 I I I I I J 1 I I I I 1 I CJ I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 19 should be observed by the project geotechnical consultant to verify that the footing trenches have been excavated into competent -bearing soils and/or bedrock and to the minimum embedments recommended above. These observations should be performed prior to placing forms or reinforcing steel. Active and At -Rest Earth Pressures An active lateral -earth pressure equivalent to a fluid having a density of 40 pounds per cubic foot (pcf) be used for design of cantilevered walls retaining a drained, level backfill. Where the wall backfill slopes upward at 2:1 (h:v), the above value should be increased to 63 pcf. All retaining walls should be designed to resist any surcharge loads imposed by other nearby walls or structures in addition to the above active earth pressures. For design of retaining walls that are restrained at the top, an at -rest earth pressure equivalent to a fluid having density of 60 pcf should tentatively be used for walls supporting a level backfill. This value should be increased to 95 pcf for an ascending 2:1 (h:v) backfill. Drainage A perforated pipe -and -gravel subdrain should be installed behind all retaining walls to prevent entrapment of water in the backfill. Perforated pipe should consist of 4 -inch minimum diameter PVC Schedule 40 or ABS SDR -35, with the perforations laid down. The pipe should be embedded in 1.5 cubic feet per foot of 0.75- to 1.5 -inch open -graded gravel wrapped in filter fabric. Filter fabric may consist of Mirafi 140N or equivalent. In lieu of a pipe and gravel subdrain, weepholes or open vertical masonry joints may be considered for retaining walls not exceeding a height of approximately 3 feet. :a I �l J 1 I 1 I I 11 I I 1 I r L_ RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 20 Weepholes, if used, should be 3 inches minimum diameter and provided at minimum intervals of 6 feet along the wall. Open vertical masonry joints, if used, should be provided at 32 -inch minimum intervals. A continuous gravel fill, 12 inches by 12 inches, should be placed behind the weepholes or open masonry joints. The gravel should be wrapped in filter fabric to prevent infiltration of fines and subsequent clogging of the gravel. Filter fabric may consist of Mirafi 140N or equivalent. The backfilled portions of retaining walls should be coated with an approved waterproofing compound to inhibit infiltration of moisture through the walls. Temporary Excavations To facilitate retaining -wall construction, the lower 5 feet of temporary slopes may be cut vertical and the upper portions exceeding a height of 5 feet should then be cut back at a maximum gradient of l :1 (h:v) for the duration of construction. However, all temporary slopes should be observed by the project geotechnical consultant for any evidence of potential instability. Depending on the results of these observations, flatter temporary slopes may be necessary. The potential effects of various parameters, such as weather, heavy equipment travel, storage near the tops of the temporary excavations and construction scheduling should also be considered in the stability of temporary slopes. Wall Backfill All retaining -wall backfill should be placed in 6- to 8 -inch maximum lifts, watered or air-dried as necessary to achieve near -optimum -moisture conditions and compacted in place to a minimum relative compaction of 90 percent. 0 it I 1 1 1 1 I 1 1 I RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 21 Construction on or Near the Tops of Descending Slopes Continuous footings for masonry block walls proposed on or within 7 feet from the top of any descending slope should be deepened such that a minimum horizontal clearance of 5 feet is maintained between the outside bottom edge of the footing and the slope face. The footings should be reinforced with a minimum of two No. 4 bars, one top and one bottom. Plans for any top -of -slope block walls proposing pier and grade -beam footings should be reviewed by Petra prior to construction. Construction on Level Ground Where masonry block walls are proposed on level ground and at least 5 feet from the tops of descending slopes, the footings for these walls may be founded at a minimum depth of 12 inches below the lowest adjacent final grade. These footings should also be reinforced with a minimum of two No. 4 bars, one top and one bottom. Construction Joints In order to mitigate the potential for unsightly cracking related to the effects of differential settlement, positive separations (construction joints) should be provided in the walls at horizontal intervals of approximately 25 feet and at each comer. The separations should be provided in the blocks only and not extend through the footings. The footings should be placed monolithically with continuous rebars to serve as effective "grade beams" along the full lengths of the walls. Ci I I 1 1 1 1 I I RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 22 CONCRETE FLATWORK Thickness and Joint Spacing To reduce the potential of unsightly cracking, concrete sidewalks and patio -type slabs should be at least 3.5 inches thick. Concrete -driveway slabs should be at least 4 inches thick. Subgrade Preparation As a further measure to minimize cracking of concrete flatwork, the subgrade soils below concrete-flatwork areas should first be compacted to a minimum relative density of 90 percent and then thoroughly wetted to achieve a moisture content that is at least equal to or slightly greater than optimum moisture content. This moisture should extend to a depth of 12 inches below subgrade and maintained in the soils during placement of concrete. Pre -watering of the soils will promote uniform curing of the concrete and minimize the development of shrinkage cracks. A representative of the project soils engineer should observe and verify the density and moisture content of the soils and the depth of moisture penetration prior to placing concrete. PLANTERS Area drains should be extended into all planters that are located within 5 feet of building walls, foundations, retaining walls and masonry block garden walls to minimize excessive infiltration of water into the adjacent foundation soils. The surface of the ground in these areas should also be sloped at a minimum gradient of 2 percent away from the walls and foundations. Drip -irrigation systems are also recommended to prevent overwatering and subsequent saturation of the adjacent foundation soils. 0 07.3 I 1 I 1 1 1 11 I RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 23 UTILITY TRENCHES All utility -trench backfill within street right-of-ways, utility easements, under sidewalks, driveways and building -floor slabs, as well as within or in proximity to slopes should be compacted to a minimum relative density of 90 percent. Where onsite soils are utilized as backfill, mechanical compaction will be required. Density testing, along with probing, should be performed by the project soils engineer or his representative, to verify proper compaction. For deep trenches with vertical walls, backfill should be placed in approximately l- to 2 -foot thick maximum lifts and then mechanically compacted with a hydra -hammer, pneumatic tampers or similar equipment. For deep trenches with sloped -walls, backfill materials should be placed in approximately 8- to 12 -inch thick maximum lifts and then compacted by rolling with a sheepsfoot tamper or similar equipment. As an alternative for shallow trenches where pipe may be damaged by mechanical compaction equipment, such as under building -floor slabs, imported clean sand having a sand equivalent value of 30 or greater may be utilized and jetted or flooded into place. No specific relative compaction will be required; however, observation, probing and, if deemed necessary, testing should be performed. To avoid point -loads and subsequent distress to clay, cement or plastic pipe, imported sand bedding should be placed at least 1 foot above all pipe in areas where excavated trench materials contain significant cobbles. Sand -bedding materials should be thoroughly jetted prior to placement of backfill. Where utility trenches are proposed parallel to any building footing (interior and/or exterior trenches), the bottom of the trench should not be located within a t :1 (h:v) plane projected downward from the outside bottom edge of the adjacent footing. 2 a1v I 1 I 1 1 RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 24 SLOPE LANDSCAPING AND MAINTENANCE The engineered slopes within the subject tract are considered grossly and surficially stable and are expected to remain so under normal conditions provided the slopes are landscaped and maintained thereafter in accordance with the following minimum recommendations. • Compacted -earth berms should be constructed along the tops of the engineered fill slopes to prevent water from flowing directly onto the slope surfaces. ' Provided the above recommendations are followed with respect to slope drainage, maintenance and landscaping, the potential for deep saturation of slope soils is considered very low. 1 �5 • The slopes should be landscaped as soon as practical when irrigation water is available. The landscaping should consist of deep-rooted, drought -tolerant and maintenance -free plant species. A landscape architect should be consulted to ' determine the most suitable groundcover. If landscaping cannot be provided within a reasonable period of time, jute matting (or equivalent) or a spray -on product designed to seal slope surfaces should be considered as a temporary measure to ' inhibit surface erosion until such time permanent landscape plants have become well-established. ' • Irrigation systems should be installed on the engineered slopes and a watering program then implemented which maintains a uniform, near -optimum moisture condition in the soils. Overwatering and subsequent saturation of the slope soils should be avoided. On the other hand, allowing the soils to dry -out is also detrimental to slope performance. t• Irrigation systems should be constructed at the surface only. Construction of sprinkler lines in trenches is not recommended. ' • During construction of any terrace drains, downdrains or earth berms, care must be taken to avoid placement of loose soil on the slope surfaces. • A permanent slope -maintenance program should be initiated for major slopes not maintained by individual homeowners. Proper slope maintenance must include the ' care of drainage and erosion -control provisions, rodent control and repair of leaking or damaged irrigation systems. ' Provided the above recommendations are followed with respect to slope drainage, maintenance and landscaping, the potential for deep saturation of slope soils is considered very low. 1 �5 I I 1 1 [l I RICHMOND AMERICAN HOMES TR 23066-3 Lots 39-95/Temecula Area August 27, 2002 J.N. 188-01 Page 25 • Property owners should be advised of the potential problems that can develop when drainage on the building pads and adjacent slopes is altered in any way. Drainage can be altered due to the placement of fill and construction of garden walls, retaining walls, walkways, patios, swimming pool, spas and planters. POST -GRADING OBSERVATIONS AND TESTING Petra should be notified at the appropriate times in order that we may provide the following observation and testing services during the various phases of post grading construction. • Buildine Construction - Observe all footing trenches when first excavated to verify adequate depth and competent soil -bearing conditions. - Re -observe all footing trenches, if necessary, if trenches are found to be excavated to inadequate depth and/or found to contain significant slough, saturated or compressible soils. - Observe pre-soaking of subgrade soils below living -area and garage floor slabs to verify adequate moisture content and penetration. • Retaining= -Wall Construction - Observe all footing trenches when first excavated to verify adequate depth and competent soil -bearing conditions. - Re -observe all footing trenches, if necessary, if trenches are found to be excavated to inadequate depth and/or found to contain significant slough, saturated or compressible soils. - Observe and verify proper installation of subdrainage systems prior to placing wall backfill. - Observe and test placement of all wall backfill to verify adequate compaction. 0 ;4 I I 1 I 1 [1 1 I I I I RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 26 • Masonry Block -Wall Construction - Observe all footing trenches when first excavated to verify adequate depth and competent soil -bearing conditions. - Re -observe all footing trenches, if necessary, if trenches are found to be excavated to inadequate depth and/or found to contain significant slough, saturated or compressible soils. • Exterior Concrete-Flatwork Construction - Observe and test subgrade soils below all concrete-flatwork areas to verify adequate compaction and moisture content. • Utility -Trench Backfill Observe and test placement of all utility -trench backfill to verify adequate compaction. • Re -Grading - Observe and test placement of any fill to be placed above or beyond the grades shown on the approved grading plans. ra I 1 I 1 1 I 11 I 1 1 1 1 RICHMOND AMERICAN HOMES August 27, 2002 TR 23066-3 Lots 39-95/Temecula Area J.N. 188-01 Page 27 This opportunity to be of service is sincerely appreciated. If you have any questions, please contact this office. Respectfully submitted, GEOTECHNICAL, INC. L. JF iy ` s� F`4- uQi�• _ 176 � w r No. ins Steen M. Po EXP s i e Geologist Senior Associat * CE 2 GE 692 FC sT�TFOFC ' /TLJ/SMP/keb Attachments: Table 1 - Lot -By -Lot Summary of As -Graded Soil Conditions Table II - Field Density Test Results (1988-1990) Table III - Field Density Test Results (2002) References Plates I and 2 - Geotechnical Maps with Density Test Locations (in pocket) Appendix A - Laboratory Test Criteria/Laboratory Test Data Appendix B - Seismic Analysis Distribution: (1) Addressee (1) Richmond American Homes Attention: Ms. Robin Finnell (1) Richmond American Homes - Field Office Attention: Mr. Craig Peters (2) Riverside County Building and Safety Attention: Mr. Mack Hakakian (3) Hunsaker & Associates Attention: Mr. Dan Hosseninvadeh MIC • CA ;9 I 1 1 1 1 TABLE 1 LOT -BY -LOT SUMMARY OF 1 AS -GRADED SOIL CONDITIONS 1 1 1 1 1 1 1 1 1 1 1 PETRA 1 �Q M TABLE I Tract 23066-3 Lot 39 - 95 LOT -BY -LOT SUMMARY OF SOIL CONDITIONS Lot Number Maximum Fill Depth (ft) Differential Fill Thickness (ft) Estimated Differential Settlement Soil Expansion Index/ Potential Post- Tensioned Slab Chloride Exposure Sulfate Exposure Soil Condition Codes' Remarks 39 3 0 1:960 ON Low moderate negligible Z 40 3 0 1:960 ON Low moderate negligible Z 41 1 .960 a \ Low moderate negligible Z 42 h - 1:960 28/Low moderate negligible E 43 15 1:960 28/Low moderate negligible E 44 14 7 1:960 ON Low moderate negligible Z 45 10 5 1:960 ON Low moderate negligible Z 46 13 5 1:960 ON Low moderate negligible z 47 14 7 1:960 ON Low moderate negligible 1. 48 _'u 8 1:960 ON Low moderate negligible L 49 20 8 1:960 ON Low moderate negligible Z 50 25 5 1:960 ION Low moderate negligible 1 51 25 5 1:960 ION Low moderate negligible "L 52 30 5 1:960 ION Low moderate negligible Z 53 28 8 1:960 I IN Low moderate negligible Z 54 25 5 1:960 1 IN Low moderate negligible Z 55 25 5 1960 1 IN Low moderate negligible Z per County of Riverside, Building and Safety Department Plan Check Memorandum dated April 5, 2001 Code Definitions (Reference: 1997 UBC): E Foundations for structures resting on soils with an expansion index greater than 20 (Section 1803.2) C For corrosion protection, if Table 19-A-2 is applicable S If exposure of concrete to sulfate -containing solutions is moderate or higher per Table 19-A-4 D Differential deflection in the foundation due to differential settlement exceeds value in Table 18 -III - GG (consider Prefab Roof Trusses) (noted ij>1:4801 P If post -tensioned slab system is to be used M► Z If none of the above is applicable Plate T-1 1 O TABLE I Tract 23066-3 Lot 39 - 95 LOT -BY -LOT SUMMARY OF SOIL CONDITIONS Lot Number Maximum Fill Depth (ft) Differential Fill Thickness (ft) Estimated Differential Settlement Soil Expansion Index/ Potential Post- Tensioned Slab Chloride Exposure Sulfate Exposure Soil Condition Codes' Remarks 56 30 7 1:960 20/V Low moderate negligible Z 57 25 9 1:960 201V Low moderate negligible Z 58 25 8 1:960 20N Low moderate negligible Z 59 30 14 1:960 2/V Low moderate negligible Z 60 35 5 1:960 2N Low moderate negligible Z 61 40 20 1:960 2N Low moderate negligible Z 62 40 20 1:960 22/Low moderate negligible E 63 40 10 1:960 22/Low moderate negligible E 64 40 10 1:960 22/Low moderate negligible E 65 40 10 1:960 22/Low moderate negligible E 66 25 13 1960. 22/Low moderate negligible E 67 9 6 1:960 6N Low moderate negligible Z 68 9 6 1:960 6/V Low moderate negligible Z 69 0 0 1:960 53/Medium moderate negligible E 70 0 0 1:960 61/Medium moderate negligible E 71 13 5 1:960 40/Low moderate negligible E 72 13 5 1:960 4011.ow I moderate negligible E • per County of Riverside, Building and Safety Department Plan Check Memorandum dated April 5, 2001 Code Definitions (Reference: 1997 UBQ: E Foundations for structures resting on soils with an expansion index greater than 20 (Section 1803.2) C For corrosion protection, if Table 19-A-2 is applicable S If exposure of concrete to sulfate -containing solutions is moderate or higher per Table 19-A-4 D Differential deflection in the foundation due to differential settlement exceeds value in Table 18 -111 - GG (consider Prefab Roof Trusses) [noted if > 1.480] P If post -tensioned slab system is to be used �1 Z If none of the above is applicable Plate T-1 2 M G► TABLE I Tract 23066-3 Lot 39 - 95 LOT -BY -LOT SUMMARY OF SOIL CONDITIONS Lot Numlter Maximum Fill Depth (ft) Differential Fill Thickness (ft) Estimated Differential Settlement Soil Expansion Index/ Potential Post- Tensioned Slab Chloride Exposure Sulfate Exposure Soil Condition Codes* Remarks 73 0 0 1:960 61/Medium moderate negligible E 74 12 8 1:960 19N Low high negligible C 75 Ili 6 1:960 19N Low high negligible C 76 1 u 5 1:960 19N Low high negligible C 77 9 5 1:960 19/V Low high negligible C 78 3 0 1:960 19/V Low high negligible C 79 0 0 1:960 24/Low moderate negligible E 80 U 0 1:960 ON Low moderate negligible Z 81 0 0 1:960 ON Low moderate negligible Z 82 20 10 1:960 ON Low moderate negligible Z 83 40 30 1:960 32/Low moderate negligible E 84 50 40 1:960 13/V Low moderate negligible Z 85 45 35 1:960 13N Low moderate negligible Z 86 29 15 1:960 13/V Low moderate negligible Z 87 4 1 1:960 5/V Low moderate negligible Z 88 0 0 1:960 2/V Low moderate negligible Z 89 8-T-7 1:960 56/Medium moderate negligible E $ per County of Riverside, Building and Safety Department Plan Check Memorandum dated April 5, 2001 Code Definitions (Reference: 1997 UBC): E Foundations for structures resting on soils with an expansion index greater than 20 (Section 1803.2) C For corrosion protection, if Table 19-A-2 is applicable S If exposure of concrete to sulfate -containing solutions is moderate or higher per Table 19-A4 D Differential deflection in the foundation due to differential settlement exceeds value in Table 18 -111 - GG (consider Prefab Roof Trusses) (noted if > 1:480) P if post -tensioned slab system is to be used Z If none of the above is applicable Plate T-13 �= M M M == M M M M M M� M== M M TABLE I Tract 23066-3 Lot 39 - 95 LOT -BY -LOT SUNINIARY OF SOIL CONDITIONS Lot Number Maximum Fill Depth (ft) Differential Fill Thickness (ft) Estimated Differential Settlement Soil Expansion Index/ Potential Post- Tensioned Slab Chloride Exposure Sulfate Exposure Soil Condition Codes* Remark, 90 33 23 1:960 56/Medium moderate negligible E 91 40 18 1:960 56/Medium moderate negligible E 92 S5 7 1:960 15N Low moderate negligible z 93 - 23 1:960 15N Low moderate negligible Z 94 I I 6 1:960 ISN Low moderate negligible Z 95 11 6 1.960 1 IN Low moderate negligible Z • per County of Riverside, Building and Safety Department Plan Check Memorandum dated April 5, 2001 Code Definitions (Reference. /997 UBC): E Foundations for structures resting on soils with an expansion index greater than 20 (Section 1803.2) C For corrosion protection, if Table 19-A-2 is applicable S If exposure of concrete to sulfate -containing solutions is moderate or higher per Table 19-A-4 D Differential deflection in the foundation due to differential settlement exceeds value in Table I8411 - GG (consider Prefab Roof Trusses) [noted if >1:480] P If post -tensioned slab system is to be used Z If none of the above is applicable Plate T -I 4 w 1 1 1 1 1 1 1 1 1 1 1 1 1 1 i ! 1 1 TABLE II FIELD DENSITY TEST RESULTS (1988-1990) 72x3066 -i �, -3 1 PETRA Yif I TABLE 11 ' Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY CONIP. SOIL DATE NO. LOCATION (ft) CV-) (pct) (%) TYPE 01/19/89 A200 Slope Tioga Street 1137 12.4 120.6 92 3 '01/26/89 01/19/89 A201 Slope Tioga Street 1139 11.1 120.6 92 3 A218 01/19/89 A202 Tioga Street 1140 12.4 118.9 92 2 Slope Lot 64 01/19/89 A203 Tioga Street 1137 8.7 111.9 90 7 119.9 01/19/89 A206 Tioga Street 1142 9.9 112.5 92 7 13.6 01/23/89 A207 Tioga Street 1144 10.5 117.6 92 5 1 1 17 11.1 A211 Slope Lot 49 1142 11.1 115.0 90 5 '01/24/89 01/24/89 A212 Tioga Street 1146 11.7 119.6 93 5 A226 01/25/89 A213 Slope Lot 63 1108 11.1 114.9 90 5 01/27/89 01/25/89 01/25/89 A214 A215 Slope Lot 63 Slope Lot 64 1112 1106 12.4 11.7 116.5 116.9 91 5 91 5 '01/31/89 01/25/89 A216 Slope Lot 64 1113 12.4 120.6 92 3 '01/26/89 A217 Slope Lot 63 1112 13.0 116.8 91 5 '01/25/89 01/26/89 A218 Slope Lot 63 1117 1;0.5 116.4 91 5 01/26/89 A219 Slope Lot 64 1114 8.7 123.5 92 6 '01/26/89 A228 A220 Slope Lot 64 1117 10.5 122.9 92 6 RTNo.A226 01/26/89 A221 Slope Lot 63 1116 7.5 116.1 91 5 114.9 01/26/89 A222 Slope Lot 63 1 1 19 11.1 119.9 92 12 ' 01/27/89 A223 Slope Lot 64 1116 13.6 114.4 87 12 01/27/89 A224 Slope Lot 64 1 1 17 11.1 120.3 92 12 01/27/89 A225 Slope Lot 63 1 117 13.6 114.1 87 12 '01/30/89 01/27/89 A226 Slope Lot 63 1 119 12.4 114.8 88 12 01/27/89 A227 RT No. A223 -- 12.4 117.6 90 12 01/27/89 A228 RT No. A225= 13.0 118.9 91 12 01/27/89 A229 RTNo.A226 11.1 119.5 91 12 01/27/89 A230 Slope Lot 62 1122 14.6 114.9 90 5 15 A231 Slope Lot 62 1121 11.7 120.1 94 5 '01/27/89 01/27/89 A232 Slope Lot 62 1118 16.3 113.5 91 7 01/27/89 A233 Slope Lot 64 1120 13.6 116.0 93 7 15 01/30/89 A234 Slope Lot 64 1118 11.1 124.4 93 6 01/30/89 A235 Slope Lot 64 1121 13.6 118.0 90 12 01/30/89 A236 Slope Lot 63 1123 13.0 119.8 91 12 01/30/89 A237 Slope Lot 63 1124 12.4 119.8 91 12 01/30/89 A238 Slope Lot 60 1124 10.5 117.6 90 17 A239 Slope Lot 60 1125 11.1 118.1 90 12 '01/30/89 01/31/89 A240 Slope Lot 60 1126 10.5 117.1 91 5 01/31/89 A241 Slope Lot 64 1125 10.5 122.5 91 6 '01/31/89 01/31/89 A242 A243 Lot 64 Slope Lot 64 1122 1124 12.4 9.9 116.5 121.9 91 93 5 12 01/31/89 A244 Slope Lot 64 1123 14.9 115.6 90 5 A245 Slope Lot 63 1127 11.7 120.5 95 12 '01/31/89 01/31/89 A246 Slope Lot 62 1127 11.1 117.9 90 12 PETRA GEOTECHNICAL, INC. 1988-1990 ' J.N. 188-01 TR 23066-3/Lots 39-95 TABLE T-11 1 15 I TABLE 11 Field Density Test Results TEST TEST TEST ELEV, MOISTURE DENSITY COMP. SOIL ' DATE NO. LOCATION (ft) (%) (Pcf) (%) TYPE 02/01/89 A249 Slope Lot 61 1129 10.7 122.0 91 02/01/89 A247 Slope Lot 64 1124 12.4 119.8 91 12 '02/01/89 A248 Slope Lot 64 1126 10.6 122.4 91 6 02/01/89 A249 Slope Lot 61 1129 10.7 122.0 91 6 02/01/89 A250 Slope Lot 56 1130 12.0 120.0 91 12 '02/01/89 A251 Slope Lot 55 1133 12.4 119.8 91 12 02/02/89 A252 Slope Lot 58 1137 12.4 116.4 91 5 A253 Slope Lot 64 1128 14.9 115.4 90 5 '02/02/89 02/02/89 A254 Slope Lot 64 1132 14.9 115.6 90 5 02/02/89 A255 Slope Lot 55 1135 13.6 116.7 91 5 '02/03/89 02/03/89 A256 A257 Slope Lot 55 Slope Lot 56 1135 1134 12.3 10.7 122.9 123.7 94 92 12 6 02/03/89 A258 Slope Lot 60 1132 10.9 123.0 92 6 A259 Slope Lot 54 1135 12.0 121.8 93 12 '02/03/89 02/06/89 A260 Slope Lot 52 1131 12.1 120.0 92 12 02/06/89 A261 Slope Lot 50 1133 12.4 115.5 90 5 '02/06/89 A262 Slope Lot 50 1132 10.5 120.6 94 5 02/06/89 A263 Slope Lot 51 1135 13.0 116.4 91 5 02/06/89 A264 Slope Lot 54 1136 13.6 120.3 92 12 ' 02/06/89 A265 Slope Tioga Street 1131 14.9 112.9 96 13 02/16/89 A308 Slope Tioga Street 1138 12.4 117.5 91 2 02/16/89 A309 Slope Lot 50 1137 11.7 117.2 91 2 1 02/16/89 A310 Slope Lot 52 1136 12.4 118.3 92 2 02/16/89 A31 I Slope Lot 53 1135 11.7 117.8 91 2 02/16/89 02/16/89 A312 A313 Slope Tioga Street Slope Tioga Street 1138 1140 13.6 12.4 112.7 115.5 96 90 U I 02/16/89 A314 Slope Lot 50 1139 11.1 117.2 91 2 A315 Slope Tioga Street 1142 12.4 115.7 90 I '02/16/89 02/16/89 A316 Slope Lot 50 1140 11.7 117.8 90 1 02/16/89 A317 Slope Tioga Street 1141 11.1 117.8 91 2 '02/16/89 A318 Slope Lot 52 1139 11.7 116.9 91 1 02/16/89 A319 Slope Lot 56 1137 12.4 115.9 91 I 02/20/89 A320 Slope Tioga Street 1142 12.4 119.4 93 5 ' 02/20/89 A321 Slope Tioga Street 1143 12.4 117.8 92 5 02/20/89 A322 Slope Lot 51 1142 14.9 105.7 90 1 A323 Tioga Street 1144 12.4 120.3 92 12 '02/20/89 02/22/89 A324 Slope Lot 53 1138 13.6 115.9 92 4 02/22/89 A325 Slope Lot 50 1143 16.3 105.7 90 1 02/22/89 02/22/89 A326 A328 Slope Tioga Street Slope Lot 53 1146 1140 13.6 12.4 116.3 117.1 92 93 4 4 02/22/89 A329 Slope Lot 50 1144 16.3 106.1 91 1 A330 Tioga Street 1148 16.3 105.9 91 1 t02/22/89 02/23/89 A331 Lot 50 1145 13.6 115.0 91 4 PETRA GEOTECHNICAL, INC. 1988-1990 ' J.N. 188-01 TR 23066-3/Lots 39-95 TABLE T -II 2 I TABLE II Field Density Test Results 1 1 1 1 1 1 1 02/23/89 TEST TEST TEST ELEV. MOISTURE DENSITY CONIP, SOIL A333 DATE NO. LOCATION (ft) (%) (pef) 02/23/89 TYPE Slope Lot 54 1140 9.9 117.1 92 5 02/23/89 A335 1 1 1 1 1 1 1 02/23/89 A332 Tioga Street 1148 10.5 117.5 92 02/23/89 A333 Slope Lot 52 1141 9.9 117.6 92 5 02/23/89 A334 Slope Lot 54 1140 9.9 117.1 92 5 02/23/89 A335 Slope Tioga Street 1148 14.9 108.0 92 1 02/23/89 A336 Slope Tioga Street 1149 14.3 109.0 93 1 02/23/89 A337 Lot 55 1141 10.5 121.6 93 12 02/27/89 A344 Tioga Street 1156 11.7 119.8 91 12 02/27/89 A345 Tioga Street 1157 11.1 118.9 93 5 02/27/89 A346 TR 23066-2/Tioga Street 1165 11.7 120.1 92 12 02/28/89 A348 Tioga Street 1159 12.4 107.6 92 13 03/14/89 A396 Tioga Street 1152 13.6 114.9 90 14 03/16/89 A402 Slope Lot 49 1150 11.1 119.2 91 12 03/16/89 A403 Slope Lot 49 1152 13.0 119.1 91 12 03/16/89 A404 Slope Lot 44 1151 11.7 117.4 92 5 03/16/89 A405 Slope Lot 49 1151 11.1 116.8 91 5 03/18/89 A406 Slope Lot 49 1160 11.7 116.6 91 5 PETRA GEOTECHNICAL, INC. 1988-1990 J.N. 188-01 TR 23066-3/Lots 39-95 TABLE T -ll 3 37 I I 1 I I I I I I I I I I] I TABLE FIELD DENSITY TEST RESULTS (2002) 1 PETRA IF ' TABLE III Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (ft) (%) facf) (%) TYPE 04116/02 213 TR 23066-3/Lot 53 slope 1142.0 10.0 127.1 95 2 '04/16/02 214 TR 23066-3/Lot 53 slope 1143.0 12.8 120.5 90 2 '04/16/02 04/16/02 215 TR 23066-3/Lot 52 1144.0 9.3 117.0 91 4 04/16/02 216 TR 23066-3/Lot 52 1145.0 7.4 122.9 93 7 '04/16/02 231 217 TR 23066-3/1-ot 51 slope 1140.0 15.5 114.3 89 z 232 04/16/02 218 RT No. 216 114.6 17.9 118.8 93 Lot 54 slope 04/16/02 225 Lot 54 1142.0 11.9 123.2 92 2 ' 04/16/02 226 Lot 54 1143.0 8.9 126.0 94 2 04/16/02 227 Lot 52 1142.0 13.3 116.1 90 3 04/16/02 228 Lot 53 1143.0 9.2 121.8 91 2 ' 04/16/02 229 Lot 50 1146.0 13.4 117.9 90 1 04/16/02 230 Lot 50 1147.0 12.0 121.3 92 1 04/16/02 231 Lot 56 slope 1146.0 12.4 121.1 91 2 ' 04/16/02 232 Lot 56 slope 1147.0 10.4 114.6 86 2 04/16/02 233 Lot 54 slope 1147.0 12.7 119.2 91 1 '04/16/02 234 Lot 54 slope 1148.0 11.4 117.2 88 2 '04/16/02 04/16/02 235 Lot 54 slope 1149.0 14.5 114.2 87 1 04/16/02 236 Lot 51 slope 1144.0 14.6 118.3 89 2 '04/16/02 245 237 Lot 51 slope 1145.0 12.3 121.5 91* 2 Lot 52 04/17/02 238 RT No. 232 04/17/02 10.5 120.9 91 2 105.6 04/17/02 239 Lot 56 slope 1147.0 9.9 120.4 90 2 ' 04/17/02 240 RT No. 236 -- 12.6 120.5 90 2 04/17/02 241 Lot 51 1145.0 13.6 119.1 91 1 04/17/02 242 RT No. 234 -- 9.5 122.0 91 2 ' 04/17/02 243 RT No. 235 -- 12.7 118.8 90 1 04/17/02 244 Lot 52 slope 1147.0 11.2 108.0 84 3 t04/17/02 245 RT No. 244 -- 13.7 115.9 90 3 '04/17/02 04/17/02 246 Lot 52 1148.0 9.2 107.0 84 3 04/17/02 247 Lot 51 1149.0 10.6 105.6 83 3 t04/17/02 248 RT No. 246 11.2 117.2 90 3 '04/17/02 04/17/02 249 RT No. 247 -- 12.8 118.6 92 3 04/17/02 250 Tioga St 1147.0 12.2 112.7 88 2 t04/17/02 251 Tioga St 1148.0 12.3 121.0 91 2 04/17/02 252 RT No. 250 9.2 120.5 90 2 04/17/02 253 Lot 44 1151.0 10.6 123.8 93 2 ' 04/17/02 254 Lot 44 1152.0 13.2 119.5 91* 1 04/17/02 255 Lot 54 1147.0 15.3 118.0 92 4 04/17/02 256 Lot 54 1148.0 10.3 106.1 84 4 ' 04/17/02 257 Lot 56 1145.0 11.3 115.6 90 4 04/17/02 258 Lot 56 1146.0 11.8 116.2 90 4 04/17/02 259 Lot 57 1149.0 8.8 123.3 92 2 ' 04/17/02 260 Lot 57 1150.0 10.4 123.5 93 2 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 * Sandcone TABLE -III 1 39 ' TABLE III ' Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COINIP. SOIL DATE NO. LOCATION tftl 19'nl tocll M TYPE (/a 04/17/02 261 Lot 53 1148.0 7.0 114.8 87 1 262 Lot 53 1147.0 10.0 116.1 90 4 '04/17/02 04/17/02 263 RT No. 256 -- 9.0 120.8 90* 2 04/17/02 264 Lot 56 1148.0 10.9 124.5 93* 2 '04/18/02 281 Lot 50 1151.0 12.8 117.8 92* 4 04/18/02 282 Lot 50 1152.0 12.4 120.4 90* 2 04/18/02 283 Lot 52 slope 1151.0 9.2 117.7 92 4 ' 04/18/02 284 Lot 52 slope 1152.0 8.8 127.6 96* 2 04/18/02 285 RT No. 261 -- 11.5 117.1 91 4 04/18/02 286 Lot 53 slope 1151.0 16.5 112.7 88 4 ' 04/18/02 287 RT No. 267 -- 11.6 116.9 91 4 04/18/02 288 RT No. 268 10.7 117.6 92 4 04/18/02 289 RT No. 269 -- 11.8 117.4 91 4 04/18/02 290 Lot 59 Isope 1135.0 12.1 114.8 90 3 04/18/02 291 Lot 591sope 1136.0 12.5 116.2 90 4 04/18/02 292 Lot 63 slope 1132.0 9.9 115.4 91 3 04/18/02 293 Lot 63 slope 1133.0 11.9 115.1 90 3 04/18/02 294 Lot 55 1148.0 11.3 124.0 93 2 '04/18/02 295 Lot 55 1149.0 11.4 123.6 93 2 04/18/02 296 Lot 51 1152.0 14.9 117.0 91 4 04/18/02 297 Lot 51 1153.0 13.7 112.7 92 D ' 04/18/02 298 Lot 63 slope 1130.0 10.1 113.2 92 D 04/18/02 299 Lot 63 1126.0 11.3 113.6 93* D 04/18/02 300 Lot 63 1127.0 10.7 115.8 90* 4 ' 04/18/02 301 Lot 55 1149.0 11.4 120.0 92* 1 04/18/02 302 Lot 55 1150.0 10.8 121.8 91 2 04/18/02 303 Lot 52 1152.0 14.1 116.5 91* 4 ' 04/18/02 304 Lot 52 1153.0 10.1 118.4 92 4 04/19/02 313 Lot 56 1150.0 11.4 117.7 92* 4 314 Lot 56 1151.0 12.6 120.7 90* 2 '04/19/02 04/19/02 315 Lot 61 slope 1134.0 11.7 117.2 91 4 04/19/02 316 Lot 61 slope 1135.0 11.6 119.2 91 1 '04/19/02 317 RT No. 286 -- 14.6 115.2 90 3 04/19/02 318 Tioga St 1156.0 13.7 121.2 91 2 04/19/02 319 Lot 54 slope 1153.0 8.2 119.5 91* 1 ' 04/19/02 320 Lot 54 1154.0 12.5 117.5 91 4 04/19/02 321 Lot 63 slope 1132.0 13.6 117.4 91 4 04/19/02 322 Lot 63 slope 1133.0 11.1 117.6 91 4 ' 04/19/02 323 Lot 63 slope 1129.0 12.5 114.6 94 D 04/19/02 324 Lot 63 slope 1130.0 11.1 118.4 92 4 04/22/02 326 Lot 55 1152.0 12.4 123.8 93 2 ' 04/22/02 327 Lot 55 1153.0 13.4 120.9 92 1 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ` Sandcone TABLE -111 2 (/a I TABLE III Field Density Test Results V1 TEST DATE TEST NO. TEST LOCATION ELEV. (ft) MOISTURE (%v) DENSITY (PC f) COMP. (fib) SOIL TYPE 04/22/02 328 Lot 60 slope 1133.0 11.9 120.2 91 1 04/22/02 329 Lot 60 slope 1134.0 12.4 123.3 92 2 04/22/02 330 Lot 53 1155.0 11.7 121.8 91 2 04/22/02 331 Lot 53 1156.0 13.0 120.6 90 2 '04/22/02 332 Lot 58 slope 1138.0 13.2 115.3 90 3 04/22/02 333 Lot 58 slope 1139.0 11.3 121.2 91 2 04/22/02 334 Lot 64 1130.0 13.6 118.4 90 1 ' 04/23/02 335 Lot 64 1131.0 9.9 125.4 94 2 04/23/02 336 Tioga St 1152.0 11.7 121.2 91* 2 ' 04/23/02 04/23/02 337 338 Lot 59 slope Lot 63 slope 1138.0 1128.0 8.1 12.3 120.8 118.8 90* 90* 2 1 04/23/02 339 Tioga St 1152.0 10.7 118.3 92 4 340 Tioga St 1153.0 12.2 119.2 93 4 i04/23/02 04/23/02 341 Lot 59 slope 1138.0 6.8 126.0 94 2 04/23/02 342 Lot 59 slope 1139.0 10.3 119.6 90 2 343 Lot 63 slope 1128.0 10.0 121.5 91 2 '04/23/02 04/23/02 344 Lot 63 slope 1129.0 13.3 115.8 90 3 04/23/02 345 Lot 57 slope 1130.0 10.8 120.6 92 1 '04/23/02 346 Lot 57 slope 1131.0 8.0 121.3 92 1 04/23/02 347 access road slope 1124.0 11.0 110.3 84 1 04/23/02 348 Lot 55 slope 1148.0 12.3 118.2 90 1 04/23/02 349 Lot 55 1149.0 12.6 115.2 90 3 04/23/02 350 Lot 62 slope 1136.0 8.9 114.1 93 D ' 04/22/02 04/22/02 351 352 Lot 62 slope RT No. 347 1137.0 -- 12.3 9.1 113.7 119.2 93 91 D 1 04/22/02 365 Lot 55 1152.0 9.0 122.4 92 2 366 Lot 55 1153.0 11.9 123.5 92 2 '04/22/02 04/22/02 367 Lot 58 1149.0 11.4 121.6 91 2 04/22/02 368 Lot 58 1150.0 12.1 121.7 91 2 04/22/02 369 Lot 60 1141.0 11.9 122.0 91 2 04/22/02 370 Lot 60 1142.0 11.9 121.3 91 2 04/22/02 371 Lot 63 1130.0 10.2 121.4 91 2 '04/22/02 372 Lot 63 1132.0 10.6 120.0 91 1 04/22/02 373 Lot 53 1153.0 8.8 123.4 92 2 04/22/02 374 Lot 53 1154.0 9.6 118.6 90 1 t04/22/02 375 Lot 53 1154.0 8.1 117.8 92* 4 04/23/02 376 Lot 55 1152.0 11.7 126.4 95* 2 ' 04/24/02 04/24/02 389 390 Lot 52 Lot 52 1157.0 1158.0 7.0 5.4 119.7 117.0 91 91 1 4 04/24/02 391 Lot 55 1154.0 9.8 126.6 95 2 392 Lot 55 1155.0 11.7 124.0 93 2 '04/24/02 04/24/02 393 Lot 59 1144.0 13.7 118.7 90 1 PETRA GEOTECHNICAL, INC. TR 23066-311-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -III 3 V1 TABLE 111 I Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY _COMP. SOIL DATE NO. LOCATION (ft) M (prt) (36) TYPE 04/24/02 394 Lot 59 1145.0 12.7 119.2 91 395 Lot 62 1135.0 15.8 108.7 90 8 '04/24/02 04/24/02 396 Lot 62 1136.0 8.8 113.9 93 d 04/24/02 401 Lot 61 1146.0 10.7 121.7 91 2 04/24/02 402 Lot 61 1147.0 9.0 118.3 90 1 04/24/02 403 Lot 64 slope 1133.0 10.5 121.3 91 2 04/24/02 404 Lot 64 slope 1134.0 11.3 116.5 91 3 fl04/25/02 405 Lot 57 1152.0 9.6 124.2 93 2 04/25/02 406 Lot 57 1153.0 8.2 123.2 92 2 ' 04/25/02 04/25/02 407 408 Lot 65 slope Lot 65 slope 1131.0 1132.0 12.0 13.1 117.7 120.8 90 90 9 2 04/25/02 409 Lot 61 1135.0 13.2 118.0 90 9 410 Lot 61 1136.0 12.8 119.4 91 9 '04/25/02 04/25/02 411 Lot 49 1158.0 9.9 120.1 90 2 04/25/02 412 Lot 43 1155.0 10.6 127.1 95 2 04/25/02 413 Tioga St 1155.0 9.7 120.6 90 2 04/25/02 414 Lot 59 1146.0 12.9 110.3 86 3 04/25/02 415 Lot 49 1157.0 11.3 114.8 90 4 '04/25/02 416 Lot 49 1158.0 9.6 109.2 91 8 04/25/02 417 Lot 43 1155.0 9.4 113.4 94 8 04/25/02 418 Lot 43 1156.0 10.2 114.3 94 8 ' 04/25/02 419 Tioga St 1154.0 9.0 126.9 95 2 04/25/02 420 Tioga St 1155.0 9.4 123.7 93 2 04/25/02 04/25/02 421 422 RT No. 414 Lot 59 -- 1146.0 92 8.2 116.2 115.4 90 90 3 4 04/25/02 423 Lot 63 1137.0 9.2 108.0 83 1 424 Lot 63 1138.0 8.0 117.9 90 1 '04/25/02 04/25/02 425 RT No. 423 -- 13.4 117.9 90 1 04/25102 426 Lot 59 1159.0 8.1 123.0 93 2 427 Lot 62 1144.0 9.5 123.0 92 2 '04/25/02 04/25/02 428 Lot 62 1145.0 11.0 120.4 90 2 04/25/02 429 Lot 64 slope 1138.0 13.6 115.3 90 4 '04/25/02 430 Lot 64 slope 1139.0 15.1 111.9 92 D 04/26/02 433 Lot 58 1154.0 10.8 126.2 95 2 04/26/02 434 Lot 58 1155.0 12.6 124.7 93 2 ' 04/26/02 435 Lot 60 1150.0 12.2 112.9 94 8 04/26/02 436 Lot 60 1151.0 10.4 123.8 93 2 ' 04/26/02 04/26/02 437 438 Lot 62 slope Lot 62 slope 1145.0 1146.0 7.6 10.2 116.7 110.6 91 92 4 8 04/26/02 439 Lot 65 slope 1140.0 10.6 113.3 93 D 440 Lot 65 slope 1141.0 8.7 116.6 91 4 '04/26/02 05/10/02 845 Lot 56 slope 1158.0 12.3 117.6 90 1 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -III 4 I [1 1 1 1 1 1 1 1 TABLE III Field Density Test Results TEST 'TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (ft) M) (pcf) (%) TYPE 05/10/02 846 Lot 56 slope 1159.0 12.1 116.7 91 4 05/10/02 847 Lot 61 slope 1148.0 8.1 109.8 91 8 05/10/02 848 Lot 61 slope 1149.0 8.5 122.2 93 8 05/10/02 849 Lot 58 slope 1156.0 11.1 122.3 92 2 05/10/02 850 Lot 58 slope 1157.0 10.4 128.7 96 2 05/13/02 864 Lot 64 1142.0 10.5 118.5 90 2 05/13/02 865 Lot 64 1143.0 10.0 113.0 91 10 05/13/02 866 Lot 64 1144.0 9.8 114.0 93 10 05/13/02 867 Lot 62 1140.0 11.4 111.5 93 D 05/13/02 868 Lot 26 1150.0 9.8 108.8 93 5 05/14/02 869 Lot 52 1162.0 13.5 118.6 90 1 05/14/02 870 Lot 52 1163.0 13.3 114.0 93 10 05/14/02 871 Lot 55 1164.0 9.1 122.7 92 2 05/14/02 872 Lot 55 1165.0 11.3 124.6 93 2 05/14/02 873 Lot 53 1163.0 15.5 115.3 90 4 05/14/02 874 Lot 53 1164.0 15.2 114.2 92 10 05/17/02 999 Elchismal/access road 1145.0 12.1 120.1 92 2 05/17/02 1000 Elchismal/access road 1147.0 11.7 120.2 90 2 05/17/02 1001 Lot 64 1152.0 11.8 105.9 91 5 05/17/02 1002 Lot 64 1154.0 12.3 107.0 92 5 05/17/02 1003 Lot 61 1158.0 11.5 118.2 91 9 05/17/02 1004 Lot 61 1160.0 9.6 121.5 93 9 05/21/02 1032 Lot 59 slope 1158.0 11.8 117.6 90 9 05/21/02 1033 Lot 59 slope 1159.0 13.0 119.8 91 7 05/21/02 1034 Lot 63 slope 1150.0 11.6 119.1 90 7 05/21/02 1035 Lot 63 slope 1151.0 10.9 117.1 91 4 05/21/02 1036 Lot 65 slope 1148.0 11.6 123.1 93 2 05/21/02 1037 Lot 65 slope 1149.0 12.7 119.6 91 7 05/21/02 1042 Tioga St 1148.0 12.1 116.0 90* 4 05/21/02 1043 Tioga St 1149.0 13.0 119.7 93* 4 05/21/02 1044 Lot 59 slope 1156.0 8.7 115.8 90* 4 05/21/02 1045 Lot 59 slope 1157.0 9.9 115.8 90* 4 05/21/02 1046 Lot 57 1159.0 14.7 116.2 90* 4 05/21/02 1047 Lot 57 1160.0 13.0 118.5 91* 9 05/21/02 1058 Lot 58 1161.0 12.4 118.6 91 9 05/21/02 1059 Lot 58 1162.0 11.2 115.1 92 10 05/21/02 1060 Lot 60 1157.0 9.6 123.0 92 2 05/21/02 1061 Lot 60 1158.0 13.1 118.2 91 9 05/21/02 1062 Lot 63 1149.0 14.1 109.6 91 8 05/21/02 1063 Lot 63 1150.0 13.6 116.6 93 4 05/21/02 1064 Lot 61 1153.0 11.6 120.9 91 2 05/21/02 1065 Lot 64 slope 1149.0 7.9 121.0 91 2 PETRA GEOTECHNICAL, INC. TR 23066-3/Lots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -III 5 V I TABLE III Field Density Test Results PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -111 6 yy ,f EST DATE TEST NO. TEST LOCATION ELEV. (ft) MOISTURE (%) DENSITY f cll COMP. (°o) SOIL TYPE 05/21/02 1066 Lot 56 1164.0 10.8 116.2 87 2 1067 RT No. 1066 -- 11.1 120.4 90 2 '05/21/02 05/21/02 1068 Lot 64 1152.0 10.3 118.5 91 9 05/21/02 1069 Lot 59 1158.0 8.4 121.2 91 2 05/21/02 1070 Lot 62 1156.0 10.7 121.1 91 2 05/21/02 1071 Lot 62 1157.0 9.6 123.6 93 2 05/21/02 1072 Lot 57 1163.0 11.6 112.9 86 9 ' 05/21/02 1073 Lot 65 slope 1147.0 11.5 113.6 86 1 05/21/02 1074 Lot 65 slope 1148.0 13.5 114.2 87 1 05/21/02 1075 TR 23066-2/1-ot 64 1152.0 14.4 113.4 86 1 ' 05/21/02 1076 Lot 64 1153.0 12.6 121.0 91 2 05/21/02 1077 Lot 61 1158.0 11.7 117.5 90 9 05/21/02 1078 Lot 61 1159.0 11.2 119.7 91 l '05/21/02 1079 RT No. 1073 -- 11.7 118.6 90 l 05/21/02 1080 RT No. 1074 10.8 119.2 91 l 1081 RT No. 1072 11.9 117.8 90 9 '05/21/02 05/21/02 1082 RT No. 1075 13.6 118.4 90 1 05/21/02 1083 Lot 63 slope 1159.0 10.3 123.4 92 2 '05/21/02 1084 Lot 63 slope 1160.0 10.9 120.3 90 2 05/21/02 1085 Lot 61 1162.0 4.4 120.9 91 2 05/21/02 1086 Lot 61 1163.0 5.8 126.0 94 2 ' 05/21/02 1087 Lot 56 1164.0 11.8 124.6 93* 2 05/21/02 1088 Lot 56 1165.0 10.0 122.2 92* 2 1089 Lot 60 1162.0 10.3 124.1 93* 2 '05/21/02 05/22/02 1090 Lot 60 1163.0 12.5 121.6 91* 2 05/22/02 1091 Lot 66 1152.0 13.1 114.9 86* 2 05/22/02 1092 Lot 62 1163.0 8.8 115.7 87* 2 05/22/02 1093 Lot 60 1162.0 10.0 113,5 85* 2 05/22/02 1096 RT No. 1092 -- 9.6 124.0 93* 2 1097 RT No. 1093 6.3 124.4 93* 2 '05/22/02 05/22/02 1098 RT No. 1091 6.8 123.1 92* 2 05/22/02 1099 Lot 65 1150.0 8.4 121.0 91* 2 '05/22/02 1100 Lot 65 1149.0 11.3 118.5 90* 1 05/22/02 1101 Lot 61 1163.0 11.1 123.3 92 2 05/22/02 1102 Lot 61 1164.0 8.6 120.8 90 2 ' 05/22/02 1113 Lot 44 1158.0 12.7 117.9 92 9 05/22/02 1114 Lot 44 1159.0 15.4 114.9 90 3 05/22/02 1115 Lot 48 1159.0 12.1 121.6 91 2 ' 05/22/02 1116 Lot 48 1160.0 10.4 119.8 93 4 05/22/02 1117 Lot 64 1160.0 11.8 116.0 90 4 05/22/02 1118 Lot 64 1161.0 11.6 121.0 91 2 05/22/02 1119 Tioga St/Sta 18+30 1156.0 6.2 120.1 92 9 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -111 6 yy TABLE III ' Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (Pt) (% (PcC) (°T) TYPE S/S 05/22/02 1120 Tioga St/Sta 18+32 1155.0 8.1 115.2 90 10 1121 Lot 65 slope 1154.0 9.0 119.0 91 9 '05/22/02 05/22/02 1122 Lot 65 slope 1155.0 12.2 113.1 91 10 05/22/02 1123 Lot 63 1161.0 9.9 121.0 91 2 '05/22/02 1124 Lot 63 1160.0 10.7 117.6 90 9 05/23/02 1133 Lot 43 1163.0 13.4 118.1 91 9 05/23/02 1134 Lot 43 1164.0 14.2 118.7 91 9 ' 05/23/02 1135 Lot 49 1164.0 11.0 119.6 92 9 05/23/02 1136 Lot 49 1163.0 10.1 115.8 90 4 05/23/02 1137 Lot 45 1162.0 11.3 120.2 92 9 ' 05/23/02 1138 Lot 45 1163.0 10.8 119.6 92 9 05/23/02 1139 Lot 66 1161.0 11.3 119.1 90 7 1140 Lot 66 1162.0 9.2 119.8 91 7 '05/23/02 05/23/02 1141 Lot 65 1162.0 9.7 122.8 92 2 05/23/02 1142 Lot 65 1163.0 12.2 118.9 90 7 1143 Lot 62 1163.0 12.0 121.3 91 2 '05/23/02 05/23/02 1144 Lot 62 1164.0 11.3 120.3 90 2 05/23/02 1145 Lot 92 1159.0 8.3 116.4 93 10 '05/23/02 1146 Lot 92 1160.0 9.5 111.7 93 8 05/23/02 1147 RT No. 824 9.8 120.7 92 1 05/23/02 1151 Lot 85 1159.0 7.4 111.8 88 3 ' 05/23/02 1152 Lot 85 1158.0 13.1 118.8 90 1 05/23/02 1154 Lot 91 1157.0 8.5 120.1 91 7 05/24/02 1175 TR 23066-1/1-ot 92 1159.0 9.7 112.9 91 11 ' 05/24/02 1176 Lot 85 1161.0 9.9 114.6 90 3 05/24/02 1177 RT No. 1151 -- 7.6 111.4 88 3 05/24/02 1178 Lot 85 1156.0 12.5 110.4 92 8 05/24/02 1179 Lot 85 1157.0 11.0 111.6 93 8 05/24/02 1180 Lot 92 1162.0 12.0 115.5 91 3 05/24/02 1181 Lot 92 1165.0 10.6 114.4 90 3 05/24/02 1182 RT No. 1177 -- 9.7 116.1 91 3 05/28/02 1187 Lot 92 1263.0 12.9 116.5 91 4 '05/28/02 1188 Lot 92 1259.0 9.7 119.6 89 2 05/28/02 1189 RT No. 1188 1259.0 10.4 121.7 91 2 05/28/02 1190 Lot 92 1264.0 12.3 114.6 92 10 ' 05/28/02 1191 Lot 92 1264.0 13.1 113.3 91 10 05/28/02 1192 Lot 92 1265.0 11.3 117.1 91 4 05/28/02 1193 Lot 92 1266.0 6.9 120.2 90 2 05/28/02 1194 Lot 91 1266.0 11.4 115.8 93 10 05/28/02 1195 Lot 106 1258.0 9.6 124.0 95 9 1200 Lot 92 1166.0 11.0 113.4 91 10 '05/28/02 05/28/02 1201 Lot 92 1166.0 10.3 115.8 90 4 PETRA GEOTECHNICAL, INC. TR 23066-3/Lots 39-95 AUGUST 2002 tJ.N. 188-01 ' Sandcone TABLE -III 7 S/S I I TABLE III Field Density Test Results 4 TEST TEST TEST ELEV. 'f` MOISTURE DENSITY COMP. SOIL '05/28/02 DATE NO. LOCATION (ft) M (pCf) (%) TYPE 4 05/28/02 1202 Lot 92 1167.0 11.3 110.7 89 10 '05/28/02 1203 Wiki Circle 1180.0 9.1 120.9 91 2 05/28/02 1204 Wiki Circle 1181.0 10.5 117.8 90 9 05/28/02 1205 Lot 85 slope 1175.0 10.0 118.9 91 9 '05/28/02 1206 Lot 85 slope 1176.0 11.5 116.8 91* 4 05/28/02 1207 Lot 85 slope 1170.0 11.6 118.9 91* 9 1208 Lot 85 slope 1171.0 12.2 119.5 92* 7 '05/28/02 05/28/02 1211 Lot 85 slope 1180.0 12.8 117.2 91 4 05/28/02 1212 Lot 85 slope 1181.0 13.5 116.5 91 4 05/28/02 05/28/02 1215 1216 Lot 83 slope Lot 83 slope 1130.0 1131.0 11.2 7.5 118.0 122.3 92 95 4 4 05/29/02 1217 Lot 87 1163.0 8.8 120.7 90 2 1218 Lot 83 slope 1138.0 12.6 114.7 89 4 '05/29/02 05/29/02 1219 Lot 83 slope 1t39.0 13.8 110.7 89 10 05/29/02 1220 RT No. 1218 11.9 119.5 96 10 '05/29/02 1221 RT No. 1219 -- 10.8 116.2 90 4 05/29/02 1222 Lot 84 1240.0 10.9 115.8 90 4 05/29/02 1223 Lot 84 1241.0 11.9 109.9 95 5 ' 05/30/02 1226 Lot 91 1182.0 19.5 107.3 93 5 05/30/02 1227 Lot 91 1181.0 17.0 112.5 90 10 05/30/02 1228 RT No. 1202 -- 12.3 112.4 90 10 i05/30/02 1231 Lot 83 slope 1138.0 9.5 107.4 93 5 05/30/02 1232 Lot 83 slope 1140.0 7.9 113.1 91 10 05/30/02 05/30/02 1233 1234 Lot 84 Lot 83 1149.0 1146.0 11.2 14.8 109.6 108.7 91 90 8 8 05/30/02 1235 Lot 83 1147.0 12.7 104.5 90 5 1238 Lot 83 slope 1151.0 10.9 113.7 91 10 '05/30/02 05/30/02 1239 Lot 83 slope 1152.0 8.9 114.9 92 10 05/31/02 1242 Lot 84 slope 1153.0 14.5 112.6 90 10 '05/31/02 1243 Lot 84 slope 1154.0 13.6 114.9 92 10 05/31/02 1246 Lot 84 1155.0 15.0 114.2 91 10 05/31/02 1247 ' Lot 84 1156.0 16.1 108.7 90 8 '05/31/02 1248 Lot 83 slope 1157.0 13.6 104.8 90 5 05/31/02 1249 Lot 83 slope 1156.0 12.4 113.0 91 10 05/31/02 1253 Lot 83 1154.0 13.0 117.9 92 4 05/31/02 1254 Lot 83 1156.0 12.2 111.2 89 10 06/03/02 1258 RT No. 1254 -- 8.7 113.5 91 10 ' 06/03/02 06/03/02 1259 1262 Lot 83 RT No. 1251 1164.0 -- 14.0 13.5 114.1 110.8 90 96 12 5 06/03/02 1269 Lot 83 slope 1260.0 14.0 113.9 90 12 06/03/02 1270 Lot 83 slope 1261.0 16.0 112.0 88 12 06/03/02 1271 Lot 84 1267.0 15.0 114.7 91 12 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 J.N. 188-01 " Sandcone TABLE -III 8 4 ' TABLE III Field Density Test Results TEST TESTTEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (ft) (%) (VC f) M TYPE y7 06/03/02 1272 Lot 84 1268.0 12.2 116.7 91 4 06/03/02 1275 Lot 92 1280.0 12.9 114.6 91 12 06/03/02 1301 Lot 83 slope 1167.0 14.1 105.8 88 8 06/03/02 1302 Lot 83 slope 1168.0 10.9 103.6 89 5 06/03/02 1305 Lot 85 1171.0 15.1 106.4 88 8 06/03/02 1306 Lot 85 1172.0 11.9 105.5 91 5 06/03/02 1307 RT No. 1301 -- 9.7 108.6 90 8 1 06/03/02 1308 RT No. 1302 11.8 104.9 90 5 06/03/02 1309 RT No. 1305 10.6 108.7 90 8 ' 06/03/02 06/04/02 1310 1311 RT No. 1270 Lot 83 slope -- 1173.0 12.4 15.9 115.8 110.5 92 89 12 10 06/04/02 1312 Lot 83 slope 1174.0 10.1 118.5 91 9 1315 Lots 83-84 slope 1174.0 14.9 108.6 90 8 '06/04/02 06/04/02 1316 RT No. 1311 -- 11.7 115.5 91 12 06/04/02 1321 Lot 82 slope 1177.0 5.6 104.3 87 8 06/04/02 1322 Lot 85 1178.0 8.1 112.2 90 10 06/04/02 1323 Lot 85 1179.0 11.8 114.6 91 12 06/04/02 1326 Lot 83 1180.0 11.2 114.9 91 12 '06/04/02 1327 Lot 83 1181.0 8.7 121.3 91 11 06/04/02 1330 RT No. 1321 15.4 108.6 90 8 06/05/02 1332 Lot 85 1185.0 7.0 120.4 92 9 ' 06/05/02 1333 Lot 85 1186.0 11.1 119.5 91 9 06/05/02 1334 Lot 91 1184.0 8.6 112.4 90 10 ' 06/05/02 06/05/02 1335 1340 Lot 91 Wiki Circle 1185.0 1185.0 11.7 7.5 112.6 121.4 90 91 10 11 06/05/02 1341 Wiki Circle 1184.0 10.6 110.9 89 10 1342 RT No. 1341 -- 14.1 116.7 89 9 '06/05/02 06/05/02 1343 RT No. 1342 13.3 116.2 89 9 06/05/02 1344 RT No. 1343 -- 10.2 117.8 90 9 1345 Lot 84 1185.0 11.9 118.4 91 9 '06/05/02 06/05/02 1346 Lot 84 1186.0 9.8 117.5 91 9 06/05/02 1347 Lot 91 1189.0 7.2 112.9 87 9 '06/05/02 1348 Lot 91 1190.0 8.4 115.7 90 4 06/05/02 1349 RT No. 1347 14.7 113.8 87 9 06/05/02 1350 Lot 84 1188.0 9.0 120.4 92 9 ' 06/05/02 1355 Lot 93 1189.0 16.8 107.3 86 10 06/05/02 1356 Lot 93 1190.0 12.9 108.7 87 10 06/05/02 1357 Lot 86 1190.0 13.1 117.8 90 9 S06/06/02 1358 Lot 86 1192.0 14.0 115.9 90 4 06/06/02 1359 Lot 85 slope 1195.0 13.0 115.0 89 4 1360 RT No. 1359 -- 11.5 116.7 90 4 '06/06/02 06/06/02 1361 RT No. 1355 13.9 114.8 89 4 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ` Sandcone TABLE -III 9 y7 ' TABLE III ' Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATF NO. LOCATION (ft) (%) (Dc) (%) TYPE a 06/06/02 1362 RT No. 1361 -- 12.7 118.4 90 9 06/06/02 1363 Lot 84 1190.0 13.6 117.9 90 4 06/06/02 1364 RT No. 1356 -- 15.0 113.8 91 10 06/06/02 1365 RT No. 1349 -- 10.4 120.9 93 9 '06/06/02 1368 Lot 85 slope 1194.0 9.0 117.5 90 9 06/06/02 1369 Lot 85 slope 1195.0 11.8 117.0 89 9 06/06/02 1373 RT No. 1369 -- 10.2 118.4 91 9 ' 06/06/02 1374 Lot 82 1192.0 11.8 120.7 90 11 06/06/02 1375 Lot 82 1193.0 10.7 119.8 92 9 06/06/02 1376 Lot 91 1193.0 12.4 116.7 91 4 06/06/02 1377 Lot 91 1194.0 11.0 115.8 90 4 06/06/02 1382 Lot 84 1192.0 12.7 120.9 91 11 06/06/02 1383 Lot 84 1191.0 10.1 117.0 91 4 06/07/02 1390 Wiki Circle 1192.0 13.7 115.4 91 12 06/07/02 1391 Wiki Circle 1191.0 12.5 116.8 91 4 06/07/02 1394 Lot 90 1194.0 13.5 112.4 90 10 06/07/02 1395 Lot 90 1195.0 12.0 120.1 90 9 06/07/02 1396 Lot 84 1189.0 9.4 118.4 91 9 06/07/02 1397 Lot 84 1190.0 12.9 117.5 90 9 06/07/02 1398 Lot 92 1193.0 12.5 117.9 90 9 06/07/02 1405 Lot 86 slope 1182.0 14.2 113.2 91 10* 06/07/02 1406 Lot 86 slope 1183.0 11.4 116.5 92 12 06/07/02 1407 Lot 85 1189.0 8.4 116.3 92 12* 06/07/02 1408 Lot 85 1190.0 16.3 111.8 93 8* 06/07/02 1409 Lot 84 1190.0 12.5 109.4 88 10* 06/07/02 1410 Lot 84 1191.0 8.2 108.0 87 10* 06/07/02 1411 RT No. 1409 -- 12.8 112.3 90 10 06/07/02 1412 RT No. 1410 -- 11.9 114.0 92 10 06/07/02 1415 Lot 84 slope 1183.0 10.4 105.7 88 8 1416 Lot 84 slope 1184.0 10.2 108.9 90 8 '06/07/02 06/07/02 1417 Lot 91 slope 1191.0 15.1 109.6 90 8 06/07/02 1418 Lot 91 slope 1192.0 11.9 112.7 91 10 '06/10/02 1445 Lot 93 1195.0 7.7 116.1 90* 4 06/10/02 1446 Lot 93 1196.0 12.1 121.6 91* 11 06/10/02 1447 Lot 83 1192.0 8.9 124.0 93* 11 '06/10/02 1448 Lot 83 1193.0 10.8 121.1 90* 11 06/10/02 1449 Lot 85 1192.0 10.6 115.2 91 12 06/10/02 1450 Lot 85 1193.0 8.3 121.3 93 9 ' 06/10/02 1453 Lot 83 slope 1190.0 10.0 120.7 90 11 06/10/02 1454 Lot 83 slope 1191.0 10.1 119.6 92 9 ' 06/10/02 1459 Lot 82 Lot 82 1194.0 1195.0 9.4 9.3 111.3 115.1 89 90 10 12 06/10/02 1460 PETRA GEOTECHNICAL, INC. TR 23066-3/Lots 39-95 AUGUST 2002 ' J.N. 188-01 * Sandcone TABLE -III 10 a TABLE III ' field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (ft) (%) (pcf) (%) TYPE 1 [1 1 1 1 06/10/02 1465 Lot 93 1194.0 14.9 109.8 87 12 06/10/02 1466 Lot 93 1195.0 8.3 115.2 91 12 06/10/02 1467 Lot 85 1193.0 10.4 108.2 90 8 06/10/02 1468 Lot 85 1194.0 11.5 104.8 90 5 06/10/02 1469 Wiki Circle @ Lot 92 1196.0 10.8 110.5 92 8 06/10/02 1470 Wiki Circle @ Lot 92 1197.0 11.9 112.8 91 10 06/11/02 1473 RT No. 1462 -- 12.1 116.7 91 4 06/11/02 1474 RT No. 1459 13.2 117.2 91 4 06/11/02 1475 RT No. 1465 -- 12.4 115.3 91 12 06/11/02 1476 Lot 82 1190.0 7.8 120.7 92 9 06/11/02 1477 Lot 82 1190.0 7.5 122.9 94 9 06/11/02 1482 Lot 91 1193.0 10.9 116.9 92 12 06/11/02 1483 Lot 91 1197.0 8.7 122.0 96 12 06/11/02 1484 Lot 90 1194.0 13.3 117.8 93 12 06/11/02 1485 Lot 83 1190.0 12.8 119.9 95 12 06/11/02 1486 Wiki Circle 1198.0 12.4 118.8 94 12 06/11/02 1487 Lot 93 1198.0 9.9 118.1 93 12 06/11/02 1490 Lot 86 1194.0 7.8 114.5 91 12 06/11/02 1491 Lot 86 1193.0 9.1 121.7 91 11 06/11/02 1492 Lot 92 1196.0 11.5 116.6 92 12 06/11/02 1493 RT No. 1415 -- 14.5 108.5 90 8 06/11/02 1494 TR 23066-3/1-ot 84 1198.0 11.7 112.8 91 10 06/11/02 1497 RT No. 1488 -- 8.9 117.4 91 4 06/12/02 1512 Lot 84 1194.0 9.8 119.6 93 4 06/12/02 1513 Lot 83 1194.0 9.9 120.2 93 4 06/12/02 1517 Lot 93 1200.0 8.9 120.0 92 9 06/12/02 1518 Lot 88 1195.0 9.3 119.9 92 9 06/12/02 1521 Lot 93 1201.0 10.6 118.1 90 9 06/12/02 1523 Lot 90 1199.0 11.0 117.6 93 12 06/12/02 1524 Lot 94 1201.0 10.8 120.1 92 9 06/18/02 1651 Lots 73-77 1151.0 10.6 108.6 85 4 06/18/02 1652 RT No. 1651 -- 6.5 109.2 85 4 06/18/02 1653 RT No. 1652 -- 8.4 117.4 91 4 06/18/02 1654 Lots 73-77 1153.0 10.3 107.2 89 8 06/18/02 1655 RT No. 1654 -- 12.6 119.8 96 8 06/18/02 1656 Lots 71-72 1162.0 7.5 112.2 87 4 06/18/02 1657 RT No. 1656 1162.0 9.3 115.3 90 4 06/18/02 1658 Lot 89 1290.0 11.2 122.9 93 4 06/18/02 1659 Lot 90 1190.0 10.4 122.3 93 4 06/18/02 1660 Lots 71-72 1163.0 10.4 115.1 90 4 06/19/02 1663 Lots 71-72 1165.0 12.6 111.0 90* 10 06/19/02 1664 Lot 90 1201.0 10.9 118.8 91 9 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 J.N. 188-01 ' Sandcone TABLE -III 11 y4 ' TABLE III Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY CONIP. SOIL DATE NO. LOCATION (f0 M (PCI) (%I TYPE 50 06/19/02 1665 Lot 90 1202.0 13.5 112.6 90 10 06/19/02 1666 Lot 72 1164.0 18.0 100.15 87 06/19/02 1667 Lot 72 1163.0 15.8 104.7 90 S 06/19/02 1668 RT No. 1666 -- 18.6 99.2 91 6 '06/19/02 1669 Lot 71 slope 1166.0 17.7 98.3 90 6 06/19/02 1670 Lot 71 slope 1167.0 9.8 109.4 91 8 06/19/02 1671 Lot 72 slope 1169.0 20.1 102.8 89 5 1 06/19/02 1672 RT No. 1671 -- 18.2 103.5 89 5 06/19/02 1673 RT No. 1672 - 19.4 104.7 90 5 06/19/02 1674 Lot 72 1171.0 13.0 116.7 92 12 ' 06/19/02 1675 Lot 72 1172.0 11.6 114.8 91 12 06/20/02 1676 Lot 76 1162.0 19.3 108.8 90 8 06/20/02 1677 Lot 76 1163.0 15.8 109.1 91 8 ' 06/20/02 1678 Lot 72 1175.0 14.7 110.0 91 8 06/20/02 1679 Lot 72 1176.0 11.5 112.9 91 10 06/20/02 1680 Lot 75 slope 1164.0 10.1 128.3 96 11 1 06/20/02 1681 Lot 75 slope 1165.0 11.8 119.5 92 9 06/21/02 1686 Lot 76 1170.0 10.2 107.7 93 5 '06/21/02 1687 Lot 76 1169.0 10.5 113.8 91 10 06/21/02 1688 Lot 64 1161.0 9.8 122.4 92 11 06/21/02 1689 Lot 64 1162.0 10.6 120.3 90 11 ' 06/21/02 1690 Lot 65 1161.0 15.8 104.9 90 13 06/21/02 1691 Lot 65 1162.0 16.2 105.5 91 13 06/21/02 1692 Lot 71 1178.0 13.5 118.7 94 12 ' 06/21/02 1693 Lot 71 1177.0 14.3 115.0 88 9 06/21/02 1694 RT No. 1693 -- 13.6 117.9 91 9 06/21/02 1695 Lot 76 slope 1170.0 12.7 108.8 90 8 ' 06/21/02 1696 Lot 76 slope 1172.0 14.0 110.4 92 8 06/21/02 1697 Lot 75 slope 1176.0 11.4 116.1 92 12 1698 Lot 75 slope 1177.0 17.0 104.7 90 13 '06/21/02 06/21/02 1699 Lot 76 1178.0 15.8 105.3 91 13 06/21/02 1700 Lot 76 1179.0 10.2 112.5 91 13 06/21/02 1701 Lot 75 1178.0 11.8 112.5 90 10 06/21/02 1702 Lot 75 1179.0 10.2 113.8 91 10 06/21/02 1703 Lot 72 1180.0 13.0 104.7 90 13 '06/21/02 1704 Lot 72 1181.0 16.1 106.5 92 13 06/25/02 1735 Lot 48 116.0 12.1 127.2 97* 11 06/25/02 1736 Lot 46 1165.0 11.1 123.5 93* 11 ' 06/25/02 1737 Lot 44 1162.0 13.6 123.6 93* 11 06/25/02 1738 Lot 47 1166.0 13.6 121.6 91* 11 06/25/02 1739 Lot 43 1164.0 10.5 120.9 91* 11 ' 06/25/02 1740 Lot 66 1164.0 11.7 124.6 93* 11 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -III 12 TiP 3 0 6 6 -// 50 I TABLE III ' Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (ft) (%) (pcf) (%) TYPE 06/26/02 1741 Lot 48 1167.0 16.2 116.2 90* 4 06/26/02 1742 Lot 46 1167.0 12.4 126.7 95* II 06/26/02 1743 Lot 42 1167.0 11.1 119.1 93* -1 06/27/02 1745 Access easement 1154.0 9.9 119.3 91* 1 '06/28/02 1753 Access easement 1160.0 11.1 118.7 90* 1 07/01/02 1758 Cozy Wy 1163.0 14.3 120.9 91* 11 07/01/02 1759 Cozy Wy 1166.0 8.7 105.6 82* 4 ' 07/01/02 1760 Lot 67 1169.0 14.3 118.5 90* 1 07/02/02 1763 RT No. 1759 -- 8.1 105.7 82* 4 07/02/02 1764 RT Nos. 1759/1763 -- 14.9 123.8 93* it 1 07/02/02 1767 Easement 1259.0 11.1 123.8 93* 11 07/02/02 1768 Lot 50 finish slope 1264.0 11.8 100.3 92 6 1769 Lot 50 finish slope 1257.0 10.4 107.4 93 5 '07/02/02 07/02/02 1770 Lot 50 finish slope 1263.0 9.9 107.1 92 5 07/02/02 1771 Lot 51 finish slope 1257.0 8.5 110.4 92 8 07/02/02 1772 Tioga St 1160.0 10.7 120.7 90 2 07/02/02 1773 Tioga St 1161.0 14.8 115.8 90 4 07/03/02 1776 Lot 68 1169.0 9.9 116.6 91* 4 '07/03/02 1777 Lot 53 finish slope 1155.0 10.5 106.5 92 5 07/03/02 1778 Lot 54 finish slope 1162.0 8.3 104.2 89 5 07/03/02 1779 Lot 55 finish slope 1155.0 11.9 106.3 92 5 ' 07/03/02 1780 Lot 56 finish slope 1154.0 7.5 111.4 89 10 07/03/02 1781 Lot 57 finish slope 1164.0 11.3 113.1 91 10 07/03/02 1782 Lot 58 finish slope 1152.0 9.4 116.5 91 4 ' 07/03/02 1783 Lot 59 finish slope 1156.0 8.5 109.9 91 8 07/03/02 1784 Lot 60 finish slope 1164.0 10.9 116.0 90 4 07/03/02 1785 Lot 61 finish slope 1146.0 10.5 115.9 90 4 07/03/02 1786 Lot 62 finish slope 1151.0 11.6 116.4 90 4 07/05/02 1787 Lot 68 1176.0 8.7 119.2 93* 4 07/08/02 1788 Lot 67 1170.0 10.5 120.1 90* 11 07/08/02 1791 Lot 49 1166.0 13.0 120.2 91* 1 07/09/02 1795 Lot 52 1168.5 6.1 116.5 91* 4 '07/09/02 1796 Lot 48 1168.0 12.4 117.7 92* 4 07/09/02 1798 Lot 53 FG 5.7 122.7 92 11 07/09/02 1799 Lot 54 FG 7.8 130.0 97 ll 07/09/02 1800 Lot 55 FG 6.5 126.2 95 ll 07/09/02 1801 Lot 56 FG 5.8 128.2 96 ll 07/09/02 1802 Lot 57 FG 6.4 127.1 95 ll ' 07/09/02 1803 Lot 58 FG 5.7 128.0 96 ll 07/09/02 1804 Lot 59 FG 6.6 130.5 98 11 07/09/02 1805 Lot 60 FG 7.6 123.6 93 ll ' 07/09/02 1806 Lot 61 FG 10.2 124.7 93 ll PETRA GEOTECHNICAL, INC. TR 23066-311-ots 39-95 AUGUST 2002 J.N. 188-01 * Sandcone TABLE -III 13 h 1 I 1 I 1 TABLE III Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. I.00ATION (ft) (%) (Pcl) (%) TYPE 07/09/02 1807 Lot 62 FG 7.3 121.3 91 II 07/09/02 1808 Lot 63 FG 6.2 125.5 94 11 07/09/02 1809 Lot 64 FG 8.7 122.4 93 2 07/09/02 1810 Lot 65 FG 11.4 127.2 95 2 07/09/02 1811 Lot 66 FG 10.1 121.8 91 2 07/10/02 1813 Lot 43 1168.0 14.3 116.0 90* 4 07/10/02 1814 Lot 45 slope 1172.0 14.9 121.5 93* 9 07/11/02 1817 Lot 74 1180.0 13.0 115.5 91* 3 07/11/02 1818 Lot 76 1179.0 10.5 116.9 91* 4 07/11/02 1819 Lot 77 1179.0 11.1 109.7 91* 8 07/11/02 1820 RT No. 1778 -- 9.3 105.4 91 5 07/11/02 1821 RT No. 1780 -- 8.0 112.6 90 10 07/11/02 1822 Lot 71 1179.0 11.4 121.4 92 1 07/11/02 1823 Lot 71 1180.0 10.8 119.9 91 1 07/11/02 1824 Lot 64 finish slope 1144.0 7.9 117.7 92 4 07/11/02 1825 Lotg 65 finish slope 1180.0 12.3 116.5 91 4 07/12/02 1826 Lot 41 1173.0 10.3 116.8 91 4 07/12/02 1827 Lot 41 1174.0 11.7 113.5 89 12 07/12/02 1828 RT No. 1827 -- 9.1 114.7 91 12 07/12/02 1829 Lot 40 1177.0 8.6 118.6 93 4 07/12/02 1830 Lot 40 1178.0 9.4 122.0 92 11 07/12/02 1831 Lot 39 1178.0 7.5 118.9 91 9 07/12/02 1832 Lot 39 1179.0 6.6 122.7 91 10 07/15/02 1840 Lot 42 1171.0 7.8 119.5 92 9 07/15/02 1841 Lot 87 1193.0 6.2 125.7 94 11 07/15/02 1842 Lot 89 1201.0 8.9 118.0 90 9 07/15/02 1843 Lot 89 1202.0 7.8 117.5 90 9 07/15/02 1844 Lot 72 finish slope 1176.0 8.9 123.6 93 11 07/15/02 1845 Lot 71 finish slope 1180.0 6.5 119.8 92 9 07/16/02 1851 Lot 86 1195.0 13.6 117.8 90* 9 07/16/02 1852 Lot 84 1195.0 14.3 124.0 93* 11 07/16/02 1853 Lot 41 1174.0 9.3 115.3 91* 3 07/16/02 1854 Lot 35 slope 1166.5 10.5 119.5 92* 9 07/16/02 1855 Lot 34 slope 1169.0 11.7 119.6 92* 9 07/17/02 1856 Lot 34 1168.0 9.9 120.8 90* 11 07/18/02 1858 Lot 49 1169.5 11.1 120.2 90* 11 07/18/02 1859 Lot 45 1168.5 8.1 114.8 90* 3 07/18/02 1860 Lot 47 1169.0 9.9 124.2 93* ll 07/18/02 1861 Lot 46 1169.0 13.0 127.4 95* 11 07/18/02 1862 Lot 41 1175.0 11.1 117.1 91* 4 07/18/02 1876 Lot 51 FG 6.1 121.3 91 11 07/18/02 1877 Lot 52 FG 5.8 120.5 92 9 PETRA GEOTECHNICAL, INC. TR 23066.311-ots 39-95 AUGUST 2002 ' J.N. 188-01 ' Sandcone TABLE -III 14 S1�- I I 1 1 1 1 11 1 TABLE III Field Density Test Results TEST TEST TEST ELEV. MOISTURE DENSITY COMP. SOIL DATE NO. LOCATION (Ft) (%) (pct) (%) TYPE 07/19/02 1879 Lot 45 FG 11.1 123.4 92* 11 07/19/02 1880 Lot 44 FG 10.5 121.3 91* ll 07/19/02 1881 Lot 43 FG 12.4 120.6 90* 4 07/19/02 1882 Lot 67 FG 10.5 114.8 90* 3 07/22/02 1885 Lot 34 slope 1174.0 12.9 123.6 93* 11 07/22/02 1886 Lot 34 slope 1176.0 13.0 124.0 93* 11 07/22/02 1888 Lot 99 FG 10.5 117.4 90* 9 07/23/02 1889 Lot 97 FG 8.1 118.3 91* 9 07/23/02 1890 Lot 98 FG 9.2 118.7 90* 9 07/23/02 1891 Lot 96 FG 7.5 119.2 91* 9 07/23/02 1892 Lot 95 FG 10.5 109.9 91* 8 07/23/02 1893 Lot 94 FG 9.9 108.1 90* 8 07/23/02 1894 Lot 93 FG 11.1 115.1 90* 3 07/23/02 1895 Lot 92 FG 13.0 124.9 94* 11 07123/02 1896 Lot 91 FG 13.6 118.7 92* 8 07/23/02 1897 Lot 90 FG 9.3 120.1 92* 8 07/23/02 1898 Lot 89 FG 7.5 118.7 91* 8 07/24/02 1899 Lot 71 FG 7.5 114.8 90 3 07/24/02 1900 Lot 72 FG 7.3 111.9 93 8 07/24/02 1901 Lot 74 finishslope 1179.0 13.0 106.4 91 5 07/24/02 1902 Lot 75 finish slope 1173.0 13.5 105.5 91 5 07/24102 1903 Lot 76 finish slope 1178.0 15.1 105.6 91 5 07/24/02 1904 Lot 82 finish slope 1194.0 12.1 116.8 92 12 07/24/02 1905 Lot 83 finish slope 1185.0 10.9 115.9 92 12 07/24/02 1906 Lot 83 finish slope 1180.0 11.1 116.2 90 4 07/24/02 1907 Lot 84 finish slope 1193.0 9.0 110.1 91 8 07/24/02 1908 Lot 84 finish slope 1195.0 15.4 108.8 90 8 07/24/02 1916 Lot 83 finish slope 1170.0 9.4 161.8 91 4 07/25/02 1917 Lot 74 FG 5.4 124.1 93 11 07/25/02 1918 Lot 75 FG 7.3 124.8 93 11 07/25/02 1919 Lot 76 FG 5.7 117.2 91 4 07/25/02 1920 Lot 77 FG 8.4 123.1 92 11 07/25/02 1921 Lot 78 FG 6.7 118.6 91 9 07/25/02 1922 Lot 87 FG 7.8 122.8 92 11 07/25/02 1923 Lot 86 FG 7.8 124.2 93 it 07/25/02 1924 Lot 85 FG 16.4 107.6 92 5 07/25/02 1925 Lot 84 FG 8.7 117.5 90 9 07/25/02 1926 Lot 83 FG 10.6 122.4 92 11 07/25/02 1927 Lot 82 FG 5.4 117.7 90 9 07/26/02 1928 Lot 31 1184.0 7.5 117.0 91* 4 07/26/02 1929 Lot 34 1178.0 9.9 121.0 91* 11 07/26/02 1932 Lot 34 slope 1486.0 14.9 122.1 92* 11 PETRA GEOTECHNICAL, INC. TR 23066-3/1-ots 39-95 AUGUST 2002 J.N. 188-01 * Sandcone TABLE -III 15 51 I TABLE III TEST DATE TEST NO. L 07/26/02 1933 Lot 35 slope 07/29/02 1934 Lot 35 07/29/02 1935 Lot 34 slope COMP. 07/30/02 1947 Lot 35 (pcD 07/30/02 1948 Lot 33 08/01/02 1952 Wiki Crcl 1483.0 08/02/02 1956 Lot 68 '08/02/02 1186.0 1957 Lot 42 94* 08/02/02 1958 Lot 41 123.7 08/02/02 1959 Lot 40 11.1 08/02/02 1960 Lot 39 1186.0 9.3 122.6 92* 11 1200.0 9.9 106.7 84* 3 FG 9.9 120.6 90* 11 FG 6.4 118.1 91* 9 FG 8.1 120.9 91* 11 FG 5.2 116.3 91* 4 FG 7.5 119.4 91* 9 TABLE III Field Density Test Results TEST ELEV. MOISTURE DENSITY COMP. SOIL CATION (ft) M (pcD (%) TYPE 1483.0 9.9 126.2 95* II 1186.0 11.1 124.9 94* II 1187.0 11.7 123.7 93* 11 1185.0 11.1 118.5 91* 9 1186.0 9.3 122.6 92* 11 1200.0 9.9 106.7 84* 3 FG 9.9 120.6 90* 11 FG 6.4 118.1 91* 9 FG 8.1 120.9 91* 11 FG 5.2 116.3 91* 4 FG 7.5 119.4 91* 9 PETRA GEOTECHNICAL, INC ' J.N. 188-01 TR 23066-3/Lots 39-95 'Sandcone AUGUST 2002 TABLE -III 16 Sf� I 1 1 1 1 REFERENCES 1 1 1 1 1 1 1 1 1 1 1 PETRA i 1 1 ss I 1 1 J LJ I I I I I 7 I I 1 Blake, T.F., 1998/1999, "LJBCSEIS" Version 1.03, A Computer Program for the Estimation of Uniform Building Code Coefficients Using 3-D Fault Sources. International Conference of Building Officials, 1997, "Uniform Building Code," Volume 2, Structural Engineering Design Provisions, dated April 1997. Earth Research Associates, Inc., 1987, Evaluation of Faulting and Liquefaction Potential, Portion of Wolf Valley Project, Rancho California, County of Riverside, California, J.N. 298-87, dated November 20, 1987. 1988, Preliminary Soils Engineering and Engineering Geologic Investigation, Red Hawk Project, Rancho Califomia Area, County of Riverside, California, J.N. 298-87, dated February 2, 1988. Kennedy, M.P., 1977, Recency and Character of Faulting Along the Elsinore Fault Zone in Southern Riverside County, California, CDMG Special Report 131. Petra Geotechnical, Inc., 1989, Supplemental Soils Engineering and Engineering Geologic Investigation, Portion of Redhawk Project, Vesting Tentative Tract Map Nos. 23064, 23065, 23066 and 23067, Rancho California, County of Riverside, California, Volumes I and 11, J.N. 298-87, dated May 8, 1989. 2001 a, Due -Diligence Geotechnical Assessment of Planned Grading and Site Development, Tracts 23066-1, 23066-2 and 23066-3, Redhawk Development, Temecula Area, Riverside County, California, J.N. 188-01, dated March 30, 2001. , 2001 b, Supplemental Geotechnical Investigation, Tract 23066-3, Lot 129, Redhawk Development, Temecula Area, Riverside County, California, J.N. 188-01, dated April, 18, 2001. 2001c, Response to Riverside County Geotechnical Report Review Sheet Dated April 24, 2001, Tracts 23066-1, 23066-2 and 23066-3, Redhawk Development, Temecula Area, Riverside County, California;for The Garrett Group LLC, J.N. 188-01, dated December 11, 2001. 2001d, Documentation of Previous Interface Grading Adjacent to Golf Course Fairways, Tracts 23066-1, 23066-2 and 23066-3, Temecula Area of Riverside County, California, J.N. 188-01, dated December 10, 2001. , 2001 e, Geotechnical Review of 40 -Scale Rough Grading Plans, Tracts 23066,23066-1, 23066-2 and 23066-3, Temecula Area of Riverside County, California, dated December 11, 2001. , 2002a, Geotechnical Recommendations Regarding Expansive Soils, Tracts 23066-1, 23066-2, 23066-3 and 30246, Temecula Area, Riverside County, California, J.N. 188-01, dated March 20, 2002. , 2002b, Response to Riverside County Building and Safety Department Geotechnical Report Review Sheet, Dated February 21, 2002 and Grading Plan Review Report, Tract 30246, Temecula Area, Riverside County, California, BGR No. 020159, J.N. 188-01, dated March 21, 2002. 2002c, Geotechnical Design Parameters for Medium Expansive Soils, Tracts 23066-1, 23066-2, 23066-3 and 30246, Temecula Area, Riverside County, California, J.N. 188-01, dated March 26, 2002. PETRA GEOTECHNICAL, INC. AUGUST 2002 J.N. 188-01 Si I 1 1 1 1 REFERENCES (Continued) , 2002d, Preliminary Geotechnical Recommendations Regarding Expansive Soils, Model Lots, Tract 23066-1, Lots 3 through 5, Temecula Area, Riverside County, California, J.N. 188-01, dated April 3, 2002. , 2002e, Preliminary Geotechnical Recommendations Regarding Expansive Soils, Phase 1, Tract 23066-2, Lots 10 through 39, Temecula Area, Riverside County, California, J.N. 188-01, dated April 3, 2002. , 2002f, Geotechnical Recommendations, Post -Tensioned Slabs, Tracts 23066-1, 23066-2, 23066-3 and 30246, Temecula Area, Riverside County, California, J.N. 188-01, dated April 9, 2002. 20028, Geotechnical Report of Rough Grading, Model Lots 1 through 8, Tract 23066-2, Temecula Area, Riverside County, California. J.N. 188-01, dated April 26, 2002. , 2002h, Geotechnical Report of Rough Grading, Lots 9 through 39, Tract 23066-2, City of Temecula, Riverside County, California, J.N. 188-01, dated May 8, 2002. . 2002i, Geotechnical Report of Rough Grading, Model Lots 92 through 95, Tract 23066-1, City of Temecula, Riverside County, California, J.N. 188-01, dated May 30, 2002. , 2002j, Geotechnical Report of Rough Grading, Lots 54 through 77 and 115, Tract 23066-1, City of Temecula, Riverside County, Califictma, J.N. 188-01, dated June 20, 2002. , 2002k, Geotechnical Report of Rough Grading, Lots 40 through 82, Tract 23066-2, City of Temecula, Riverside County, California. J.N. 188-01, dated August 13. 2002. ' PETRA GEOTECHNICAL, INC. J. N. 188-01 I AUGUST 2002 1 52 APPENDIX A LABORATORY TEST CRITERIA LABORATORY TEST DATA -7Ra1o6&/-' "3 PETRA w APPENDIX A LABORATORY TEST CRITERIA ' Laboratory Maximum Dry Density ' Maximum dry density and optimum moisture content were determined for selected samples of soil and bedrock materials in accordance with ASTM Test Method D1557. Pertinent test values are given on Plates A-) and A-2. ' Expansion Potential ' Expansion index tests were performed on selected samples of soil and bedrock materials in accordance with ASTM Test Method D4829. Expansion potential classifications were determined from 1997 UBC Table 18-1-B on the basis of the expansion index values. Test results and expansion potentials are presented on Plates A-3 and A-4. Soil Chemistry ' Chemical analyses were performed on selected samples of onsite soil to determine concentrations of soluble sulfate and chloride, as well as pH and resistivity. These tests were performed in accordance with California Test Method Nos. 417 (sulfate), 422 (chloride) and 643 (pH and resistivity). Test results are presented on Plate A-5. ' Atterbere Limits ' Atterberg limit tests (Liquid Limit and Plastic Index) were performed on selected samples to verify visual classifications. These tests were performed in accordance with ASTM Test Method D4318. Test results are presented on Plate A-6. 1] 1 ' PETRA GEOTECHNICAL, INC. AUGUST 2002 J.N. 188-01 I j I 1 1 1 1I I 1 LABORATORY MAXIMUM DRY DENSITY 1989 Soil Type Maximum Dry Density ( ef) it Type Maximum Dry Density (PCA 1 117.0 14 127.5 2 129.0 16 132.5 3 131.5 17 130.0 4 126.0 18 128.0 5 127.5 19 124.5 6 134.0 20 122.5 7 124.5 21 126.0 9 132.0 22 129.0 10 125.0 23 118.0 11 135.5 26 130.5 12 130.0 27 125.5 13 117.5 11 124.5 ' PETRA GEOTECHNICAL, INC. j. N. 188-01 1 AUGUST 2002 Plate A-1 1 ba 1 1 11 LABORATORY MAXIMUM DRY DENSITY' (Continued) 2002 Sample No. Soil Type I OptimumMaximum Moisture I (%) Dry Density (cf) I Dark brown Clayey Silty tine SAND 8.5 131.5 2 Light brown Silty SAND 8.0 133.5 3 Brown Clayey fine SAND 10.5 127.5 4 Light brown Silty, Clayey fine- to medium -grained SAND 10.0 128.5 5 Light brown very fine Sandy SILT 14.0 116.0 7 Yellowish light brown fine to coarse SAND with Clay and Gravel 8.5 132.0 8 Yellowish light brown fine to medium SAND with trace Clay and Silt 12.5 120.5 9 Light brown Silty SAND with trace Clay 8.5 130.5 D Light brown Clayey SAND 13.0 122.0 10 Medium brown Clayey SILT 11.5 124.5 11 Medium brown Clayey medium to coarse SAND with cobbles 8.0 133.5 12 Light brawn Silty to Clayey fine SAND 1 10.5 126.5 ' (1) PER ASTM TEST METHOD D1557 1 1 ' PETRA GEOTECHNICAL, INC AUGUST 2002 J. N. 188-01 Plate A-2 t I 1 1 1 1 1 1 1 EXPANSION INDEX TEST DATA Lot No. Representative Lots Expansions Index Expansion} Potential,', 39 39 through 41 0 Very Low 43 42 and 43 28 Low 44 44 through 46 0 Very Low 47 47 through 49 0 Very Low 51 50 through 52 10 Very Low 54 53 through 55 11 Very Low 56 56 through 58 20 Very Low 60 59 through 61 2 Very Low 65 62 through 66 22 Low 68 67 and 68 6 Very Low 69 69 53 Medium 70 70 61 Medium 71 71 and 72 40 Low 73 73 61 Medium 76 74 through 78 19 Very Low 79 79 24 Low 81 80 through 82 0 Very Low 83 83 32 Low 86 84 through 86 13 Very Low 87 87 5 Very Low 88 88 2 Very Low 89 89 through 91 56 Medium 92 92 through 94 15 Very Low 95 95 11 1 Very Low ' (2) PER ASTM TEST METHOD D4829 (3) PER 1997 UBC TABLE I8 -1-B ' PETRA GEOTECHNICAL, INC. AUGUST 2002 f. N. 188-01 Plate A-3 1 6;L I 1 1 k I 1 EXPANSION INDEX TEST DATA (Continued) Sample No. Description Expansion Index Expansion' Potential I Dark brown Clayey Silty fine SAND I 1 Very Low 2 Light brown Silty SAND 18 Very Low 3 Brown Clayey fine SAND 81 Medium 4 Light brown Silty, Clayey fine- to medium -grained SAND 75 Medium 5 Light brown very fine Sandy SILT 16 Very Low 6 Light yellowish brown fine SAND 0 Very Low 7 Yellowish light brown fine to course SAND with Clay and Gravel 2 Very Low 8 Yellowish light brown fine to medium SAND with trace Clay and Silt 3 Very Low 9 Light brown Silly SAND with trace Clay 20 Ve Low ' (2) PER ASTM TEST METHOD D4829 (3) PER 1997 UBC TABLE 18-1-B 1 1 1 1 PETRA GEOTECHNICAL, INC. AUGUST 2002 J.N. 188-01 Plate A-4 6; I 1 1 1 1 1 1 1 1 1 SOLUBLE CHENHSTRY Lot Nos. Sulfate Chlorides PH' I Corrosivity Potential M (ppm) (ohm cm) 39 through 41 0.01 95 7.2 2,400 concrete: negligible steel: moderate 50 through 52 ND -- -- -- concrete: negligible steel: -- 59 through 61 0.01 5 7.0 3,200 concrete: negligible steel: moderate 74 through 78 ND 191 7.2 1,900 concrete: negligible steel: high 85 through 87 ND 72 7.3 2,300 concrete: negligible steel: moderate (4) PER CALIFORNIA TEST METHOD NO. 417 (5) PER CALIFORNIA TEST METHOD NO. 422 (6) PER CALIFORNIA TEST METHOD NO. 643 (7) PER CALIFORNIA TEST METHOD NO. 643 ' PETRA GEOTECHNICAL, INC. 1.N. 188-01 AUGUST 2002 Plate A -S k(1-1 I 1 1 1 1 1 1 1 1 ATTERBERG LIMITS' Lot No. Soil Tvpe Liquid Limit Plastic Limit Plasticity Index 73 Clayey SILT 36 29 7 Sample No. Soil Type Liquid Limit Plastic Limit Plasticity Index 3 Clayey SAND 32 14 18 4 Silty, Clayey SAND 32 15 17 10 Clayey SILT 28 24 4 11 Clayey medium to coarse SAND with cobbles 26 18 8 12 Silty fine SAND I NP (8) PER ASTM TEST METHOD D4318 ' PETRA GEOTECHNICAL, INC. AUGUST 2002 J. N. 188-01 Plate A-6 1 1 `S [1 1 1 I 1 APPENDIX B 1 SEISMIC ANALYSIS 1 1 1 1 I 1 [1 1 1 1 PETRA i 1 I pe 02,3 o�� -/ -c�, 46 1 1 1 1 1 1 1 x U B C S E I S version 1.03 COMPUTATION OF 1997 UNIFORM BUILDING CODE SEISMIC DESIGN PARAMETERS JOB NUMBER: 188-01 02 JOB NAME: Richmond Redhaw FAULT -DATA -FILE NAME: CDMGUBCR.DAT SITE COORDINATES: SITE LATITUDE: 33.4677 SITE LONGITUDE: 117.0860 UBC SEISMIC ZONE: 0.4 UBC SOIL PROFILE TYPE: SO NEAREST TYPE A FAULT: NAME: ELSINORE-JULIAN DISTANCE: 12.1 km NEAREST TYPE B FAULT: NAME: ELSINORE-TEMECULA DISTANCE: 1.3 km NEAREST TYPE C FAULT: NAME: DISTANCE: 99999.0 km SELECTED UBC SEISMIC COEFFICIENTS: Na: 1.3 Nv: 1.6 Ca: 0.57 Cv: 1.02 Ts: 0.716 TO: 0.143 Page 1 DATE: 04-13-20 67 1 -it���:".r��•��i.•�'..•�-�::�•��:`.��-si;��s'r�-ski•kkk•�'..•::�k�'.;x��i�3���:';k�•k��-�s �s k�::� CAUTION: The digitized data points used to model faults are ' limited in number and have been digitized from small scale maps (e.g., 1:750,000 scale). Consequently, ' the estimated fault -site -distances may be in error b y several kilometers. Therefore, it is important that ' the distances be carefully checked for accuracy and ' adjusted as needed, before they are used in design. --------------------------- SUMMARY --------------------------- OF FAULT PARAMETERS ' Page 1 I APPROX.ISOURCE I MAX. I SLIP I FAULT ' ABBREVIATED IDISTANCEI TYPE I MAG. I RATE I TYPE ' FAULT NAME I(SS,DS,BT) I (km) I(A,B,C)I (Mw) I (mm/yr) ELSINORE-TEMECULA I 2.6 I B I 6.8 I 5.00 I SS ELSINORE-JULIAN I 12.1 I A I 7.1 I 5.00 ' I SS ELSINORE-GLEN IVY I 31.2 I B I 6.8 I 5.00 I SS ' SAN JACINTO-ANZA 1 SS I 33.3 I A I 7.2 I 12.00 SAN JACINTO-SAN JACINTO VALLEY I 34.1 I B I 6.9 I 12.00 1 SS ' NEWPORT-INGLEWOOD (offshore) I 46.5 I B I 6.9 I 1.50 1 SS ROSE CANYON I 49.0 I B I 6.9 i 1.50 'I SS SAN JACINTO-COYOTE CREEK I 53.6 I B I 6.8 I 4.00 1 SS ' EARTHQUAKE VALLEY I 56.6 I B I 6.5 I 2.00 ' Page 2 1 I 1 1 [l 1 F 1 1 I Ss CHINO -CENTRAL AVE. (Elsinore) 1 60.0 I B 1 6.7 1 1.00 I DS SAN JACINTO-SAN BERNARDINO 1 62.7 1 B 1 6.7 1 12.00 1 SS SAN ANDREAS - Southern 1 63.0 1 A 1 7.4 I 24.00 1 ss ELSINORE-WHITTIER 1 66.8 1 B 1 6.8 I 2.50 1 SS PINTO MOUNTAIN 1 73.8 1 B 1 7.0 I 2.50 I SS CORONADO BANK 1 74.1 I B 1 7.4 1 3.00 1 SS NEWPORT-INGLEWOOD (L.A.Basin) 1 79.1 1 B 1 6.9 1 1.00 I ss PALOS VERDES 1 81.5 1 B 1 7.1 1 3.00 1 SS BURNT MTN. 1 84.6 1 B 6.5 1 0.60 1 SS CUCAMONGA 1 86.0 1 A 1 7.0 1 5.00 I DS ELSINORE-COYOTE MOUNTAIN 1 87.4 I B I 6.8 I 4.00 I SS NORTH FRONTAL FAULT ZONE (West) 1 87.8 1 B 1 7.0 1 1.00 DS SAN JACINTO - BORREGO 1 87.9 I B 1 6.6 1 4.00 1 SS EUREKA PEAK I 89.1 1 B 1 6.5 1 0.60 1 SS NORTH FRONTAL FAULT ZONE (East) 1 90.4 1 B 1 6.7 I 0.50 I DS SAN JOSE I 91.0 I B 1 6.5 1 0.50 I DS CLEGHORN 1 91.1 1 B 1 6.5 1 3.00 1 SS SIERRA MADRE (Central) 1 94.8 1 B 1 7.0 1 3.00 1 DS LANDERS 1 99.2 1 B I 7.3 I 0.60 1 SS HELENDALE - S. LOCKHARDT 1 102.4 I B I 7.1 I 0.60 I SS SAN ANDREAS - 1857 Rupture 1 102.4 1 A 1 7.8 1 34.00 1 Ss LENWOOD-LOCKHART-OLD WOMAN SPRGS 1 107.0 1 B 1 7.3 1 0.60 1 SS CLAMSHELL-SAWPIT 1 111.1 1 B 1 6.5 1 0.50 I DS JOHNSON VALLEY (Northern) 1 111.6 I B 1 6.7 1 0.60 1 SS EMERSON So. - COPPER MTN. 1 112.9 I B 1 6.9 1 0.60 1 SS RAYMOND 1 115.4 i B I 6.5 I 0.50 Page 3 1 APPROX.ISOURCE I MAX. I SLIP I FAULT DS ABBREVIATED IDISTANCEI TYPE I MAG. I RATE I TYPE SUPERSTITION MTN. (San Jacinto) I 120.2 I B 1 6.6 I 5.00 (Mw) I S I(SS,DS,BT) SAN GABRIEL VERDUGO 1 123.5 I B I 6.7 I 0.50 ' ELMOREDRANCH I 124.2 I B I 6.6 I 1.00 1 DS I SS IMPERIAL 1 153.5 I A I 7.0 I PISGAH-BULLION MTN.-MESQUITE LK I 124.3 I B I 7.1 I 0.60 GRAVEL HILLS - HARPER LAKE S 6.9 I 0.60 1 SS CALICO- HIDALGO I 125.0 I B I 7.1 I 0.60 1 DS 1 SS SUPERSTITION HILLS (San Jacinto) I 126.3 I B I 6.6 1 4.00 ' 1 SS HOLLYWOOD I 128.5 I B I 6.5 1 1.00 ' DS BRAWLEYSSEISMIC ZONE I 128.6 I B I 6.S 1 25.00 1 SS ELSINORE-LAGUNA SALADA I 138.9 B I 7.0 I 3.50 ' 1 SS SANTA MONICA I 140.4 I B I 6.6 1.00 I DS SIERRA MADRE (San Fernando) I 143.8 I B I 6.7 I 2.00 ' 1 DS 1 1 1 1 1 [1 1 --------------------------- SUMMARY OF FAULT PARAMETERS --------------------------- Page 2 Page 4 1 74 APPROX.ISOURCE I MAX. I SLIP I FAULT ABBREVIATED IDISTANCEI TYPE I MAG. I RATE I TYPE FAULT NAME I (km) I(A,B,C)I (Mw) I (mm/yr) I(SS,DS,BT) SAN GABRIEL I 145.6 1 B 1 7.0 I 1.00 I SS MALIBU COAST I 148.1 I B I 6.7 I 0.30 1 DS IMPERIAL 1 153.5 I A I 7.0 I 20.00 1 SS GRAVEL HILLS - HARPER LAKE 1 157.0 1 B i 6.9 I 0.60 1 SS ANACAPA-DUME I 159.9 1 B 1 7.3 1 3.00 1 DS Page 4 1 74 I I I 1 1 1 1 [1 1 1 SANTA SUSANA I 161.7 I B I 6.6 I 5.00 1 DS HOLSER 1 170.7 1 B I 6.5 I 0.40 1 DS BLACKWATER I 173.2 I B I 6.9 1 0.60 1 Ss OAK RIDGE (Onshore) 1 181.7 I B 1 6.9 I 4.00 1 DS SIMI-SANTA ROSA I 183.3 1 B I 6.7 1 1.00 I DS SAN CAYETANO I 189.1 I B 1 6.8 I 6.00 1 DS SANTA YNEZ (East) 1 208.3 I B I 7.0 1 2.00 1 Ss GARLOCK (West) 1 213.3 I A 1 7.1 I 6.00 1 SS VENTURA - PITAS POINT I 214.2 I B I 6.8 1 1.00 I DS GARLOCK (East) 1 219.9 I A 1 7.3 1 7.00 1 SS M.RIDGE-ARROYO PARIDA-SANTA ANA 1 222.8 1 B I 6.7 I 0.40 1 DS PLEITO THRUST 1 225.2 I B I 6.8 I 2.00 1 DS RED MOUNTAIN 1 228.5 1 B 1 6.8 1 2.00 DS SANTA CRUZ ISLAND I 232.7 1 B 1 6.8 1 1.00 I DS BIG PINE 1 233.2 1 B 1 6.7 1 0.80 1 SS OWL LAKE 1 238.6 I B I 6.5 I 2.00 1 SS PANAMINT VALLEY 1 238.9 I B 1 7.2 1 2.50 1 SS WHITE WOLF 1 240.0 I B I 7.2 1 2.00 1 DS TANK CANYON 1 242.2 1 B I 6.5 I 1.00 I DS So. SIERRA NEVADA 1 242.6 1 B I 7.1 I 0.10 I DS LITTLE LAKE 1 243.9 1 B I 6.7 i 0.70 1 SS DEATH VALLEY (South) I 245.3 I B 1 6.9 I 4.00 1 SS SANTA YNEZ (West) 1 262.0 1 B 1 6.9 I 2.00 1 SS SANTA ROSA ISLAND I 268.8 I B 1 6.9 1 1.00 I DS DEATH VALLEY (Graben) 1 288.9 1 B 1 6.9 1 4.00 1 DS LOS ALAMOS -W. BASELINE I 305.1 I B I 6.8 I 0.70 1 DS Page 5 71 1 APPROX.ISOURCE I MAX. I SLIP I FAULT OWENS VALLEY I 314.0 I B 1 7.6 1 1.50 MAG. I 1 SS 1 TYPE ' LiONS HEAD I 322.5 I B 1 6.6 I 0.02 I(SS,DS,BT) DS DEATH VALLEY (N. ' SAN IUAN I SS I 325.6 I B I 7.0 I 1.00 SAN LUIS RANGE (S. Margin) I 330.2 1 B 1 7.0 1 0.20 6.8 I D t HUNTER MTN. - SALINE VALLEY I 336.2 I B I 7.0 I 2.50 I SS CASMALIA (Orcutt Frontal Fault) 1 339.8 I B I 6.5 I 0.25 1 DS DEATH VALLEY (Northern) I 342.9 I A 1 7.2 1 5.00 I SS ' INDEPENDENCE 1 DS I 350.0 I B 1 6.9 1 0.20 LOS OSOS 1 359.5 I B I 6.8 1 0.50 I DS ' HOSGRI 1 368.7 I B 1 7.3 1 2.50 1 SS RINCONADA I 377.7 I B 1 7.3 1 1.00 I SS ' BIRCH CREEK 1 406.9 I B 1 6.5 I 0.70 1 DS ' WHITE MOUNTAINS I SS 1 410.4 I B 1 7.1 1 1.00 DEEP SPRINGS I 428.0 I B 1 6.6 I 0.80 1 DS SAN ANDREAS (Creeping) 1 428.1 1 B I 5.0 I 34.00 1 SS .1 --------------------------- SUMMARY OF FAULT PARAMETERS --------------------------- Page 3 Page 6 712 APPROX.ISOURCE I MAX. I SLIP I FAULT ABBREVIATED IDISTANCEI TYPE I MAG. I RATE 1 TYPE FAULT NAME I (km) I(A,B,C)1 (Mw) I (mm/yr) I(SS,DS,BT) DEATH VALLEY (N. of Cucamongo) I 431.0 I A I 7.0 1 5.00 1 SS ROUND VALLEY (E. of S.N.Mtns.) I 443.2 I B 1 6.8 I 1.00 Page 6 712 I 1 1 Il 1 1 1 1 1 I 1 1 I DS FISH SLOUGH I DS HILTON CREEK I DS HARTLEY SPRINGS I DS ORTIGALITA I SS CALAVERAS (So.of Calaveras Res) I SS MONTEREY BAY - TULARCITOS I DS PALO COLORADO - SUR I SS QUIEN SABE I SS MONO LAKE I DS ZAYANTE-VERGELES SS SARGENT I SS SAN ANDREAS (1906) 1 SS ROBINSON CREEK I DS SAN GREGORIO I SS GREENVILLE I SS ANTELOPE VALLEY I DS HAYWARD (SE Extension) I SS MONTE VISTA - SHANNON I DS HAYWARD (Total Length) SS CALAVERAS (No.of Calaveras Res) I SS GENOA I DS CONCORD - GREEN VALLEY I SS RODGERS CREEK SS WEST NAPA I SS POINT REYES I DS HUNTING CREEK - BERRYESSA I 449.6 I B I 6.6 I 0.20 I 469.5 I B I 6.7 I 2.50 I 494.6 I B I 6.6 I 0.50 I 509.4 I B I 6.9 I 1.00 I 517.1 I B I 6.2 I 15.00 I 523.1 I B I 7.1 I 0.50 I 526.3 I B I 7.0 I 3.00 I 529.7 I B I 6.5 I 1.00 I 530.8 I B I 6.6 I 2.50 I 549.2 I B I 6.8 I 0.10 554.0 I B I 6.8 3.00 I 554.4 I A I 7.9 I 24.00 I 562.3 I B I 6.5 I 0.50 I 598.2 A I 7.3 I 5.00 I 601.0 I B I 6.9 I 2.00 603.0 I B I 6.7 I 0.80 I 603.1 I B I 6.5 I 3.00 I 604.1 I B I 6.5 I 0.40 I 622.4 I A I 7.1 I 9.00 I 622.4 I B I 6.8 I 6.00 I 629.2 I B I 6.9 I 1.00 I 668.8 I B I 6.9 I 6.00 I 708.1 I A I 7.0 I 9.00 I 708.3 I B I 6.5 I 1.00 I 729.3 I B I 6.8 I 0.30 I 729.5 ( B I 6.9 I 6.00 Page 7 73 I SS ' MAACAMA (South) I SS COLLAYOMI t I SS BARTLETT SPRINGS SS MAACAMA (Central) MAACAMAS(North) I SS ' ROUND VALLEY (N. S.F.Bay) I SS BATTLE CREEK ' I Ds LAKE MOUNTAIN SS GARBERVILLE-BRICELAND ' I SS MENDOCINO FAULT ZONE I DS LITTLE SALMON (Onshore) I DS MAD RIVER DS CASCADIA SUBDUCTION ZONE I DS MCKINLEYVILLE 'I Ds TRINIDAD I DS ' FICKLE HILL I DS TABLE BLUFF I DS LITTLE SALMON (Offshore) I DS ' Page 4 ------------ I 770.1 I B I 6.9 I 9.00 I 786.2 I B I 6.5 I 0.60 I 788.6 I A I 7.1 I 6.00 I 811.7 I A I 7.1 I 9.00 I 870.5 I A I 7.1 I 9.00 I 875.3 I B I 6.8 I 6.00 I 892.8 I B I 6.5 I 0.50 I 933.6 I B I 6.7 I 6.00 I 951.5 I B I 6.9 I 9.00 11008.7 I A I 7.4 I 35.00 11013.7 I A I 7.0 I 5.00 11015.4 B I 7.1 I 0.70 11023.1 A I 8.3 I 35.00 11026.1 I B I 7.0 I 0.60 11027.4 I B I 7.3 I 2.50 11028.2 I B I 6.9 I 0.60 11034.4 I B I 7.0 I 0.60 1047.6 I B I 7.1 I 1.00 --------------------------- SUMMARY OF FAULT PARAMETERS --------------------------- ' I FAULT I APPROX.ISOURCE I MAX. I SLIP TYPE ABBREVIATED IDISTANCEI TYPE I MAG. I RATE ' I I Page 8 74f I FAULT NAME I (km) I(A,B,C)l (Mw) I (mm/yr) 1 I(SS,DS,BT) ' BIG LAGOON - BALD MTN.FLT.ZONE 11063.9 I B I 7.3 I 0.50 D4S�t.•�:4 kx �•k�9� :•x�:4t<:4�.�....,:. k:4k k:4 ::3kk'.,•-_k�:4 :4 ••� •�k:4'..--:'t k'w -k-S-��k�'h #sk 1 1 1 1 1 1 1 11 1 1 1 [1 1 1 I Page 9 M � M nEar�,Mlr MET;PT)ITST Tp7r(7 1 1\V 1V1 2.50 2.25 2.00 0.25 0.00 Seismic Zone: 0.4 Soil Profile: SD 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Period Seconds 4.5 5.0 1.75 0 1.50 L 1.25 U Q 1.00 75 0.75 U a 0.50 W 0.25 0.00 Seismic Zone: 0.4 Soil Profile: SD 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Period Seconds 4.5 5.0