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CT 72-20; La Costa Vale Unit 3; Soils Report; 1977-10-27
BENTON ENGINEERING. INC. APPLIED 801L MECHANICS --~~ FOUNDATIONS 6717 CONVOY COURT SAN D,EGO. CALIFORNIA 92111 .- - - - - PHlLlP HENKING BENTON PIESIDENT C,Y,L LNGIHECI October 27, 1977 TELEPHONE ,,,A) 565.1955 Warmington Development, Inc. 1641 Langley Avenue Irvine, California 92714 Subject: Project No. 77-S-ID RECEIVED Repat on Compacted Filled Ground CON vo - OCT 3 I 1977 Lots 437 to 492, inclusive of LJTS 1 - / 51 La Costa Vale Unit No. 3 Carlsbad Tract No. 72-20 Carlsbad, California CITY OF CARLSBAD Building Department Gentlemen: This is to repat the results of tests and observations made to inspect the canpaction of filled ground placed on certain areas of the subject lots in Carlsbad, California. Compacted filled ground has previously been placed on certain areas of this development during the initial site grading fw La Costa Vale Unit No. 3. The results of tests taken during this previous grading period were presented in our repcxt on Project No. 74-52D, dated February 4, 1977. The recent grading was conducted during the period between August 5 and October 11, 1977. The approximate areas and depths of filled ground placed under our inspection in accordance with the approved specifications are shown on the attached Drawing Nos. 1 and 2, entitled “Location of Ccmpacted Filled Ground. ‘I The grading plan used fa the placement of filled ground was prepared by Rick Engineering Ccqxmy. The approximate locations at which the tests were taken and the final test results are presented on pages T-l to T-9, inclusive, under the “Table of Test Results.” The laboratory determinations of the maximum dry densities and optimum moisture contents of the maja fill materials are presented on page L-l, under the “Labaatory Test Results. ” Some of the maximum dry densities shown in the “Table of Test Results” were combinations of these. The tests were taken during the weekly periods indicated below: Test Number Week Ending 1, 2 and 3 August 6, 1977 4 to 35, inclusive August 13, 1977 36 to 50, inclusive August 20, 1977 51 to 76, inclusive August 27, 1977 77 to 119, inclusive September 3, 1977 - - - - - Project No. 77-B-1D Warmington Development, Inc. -2- Test Number Week Ending 120 to 157, inclusive September 10, 1977 I.52 to 199, inclusive September 17, 1977 200 to 229, inclusive September 24, 1977 230 to 233, inclusive October 1, 1977 234 to 246, inclusive October 8, 1977 247 to 252, inclusive October 11, 1977 (Date of last test) The final results of tests and observations indicate that the ccmpacted filled ground has been placed at 90 percent of the maximum dry density or greater. It has been determined that the fill materials, canpacted to 90 percent of the maximum dry density, have a safe bearing value of 1,800 pounds per square foot fu one foot wide continuous footings founded at the minimum required depth and placed five feet OT more inside the top of compacted filled ground slopes. If footings are placed closer to the exposed slopes than 5 feet below a 1 l/2 horizontal to 1 vertical line projected outward and downward from a point 5 feet horizontally inside the top of cunpacted filled ground slopes. Tests indicate that the compacted filled ground is adequate to satisfactorily support the proposed one or two stay wood frame dwellings without detrimental settlements. Expansive soil conditions exist in the upper three feet below finished grade in certain areas. The classification of the building areas with respect to expansive soil conditions is presented as follows: Building Number Classification 1 to 72, inclusive Expansive 73 to 104, inclusive Nonexpansive. 105 to 151, inclusive Expansive It is understood that a post-tensioned slab foundation system specially designed to minimize possible detrimental effects due to the potentially expansive soil conditions, will be used for foundation support on those building areas having expansive soil conditions in the upper three feet below finished grade. RespectfiJly submitted, BENTON ENGINEERING, INC. Distr: Reviewed by /&z/L R.C. Remer S.H. Shu, Civil Engineer R.C.E. No. 19913 (2) Addressee (2) Addressee, Cc&bad (1) City of Carlsbad, Building Department (1) Rick Engineering Ccmpany, San Diego BLNTON LNOINECRINO. INC. Project No. 77-S-ID Warmingtcm Development, Inc. T-l Test No. Approx- Depth imate of Fill Field Location at Test Moisture Bldg. No. in Feet % dry wt 1 22 2 24 3 26 4 10 5 9 6 18 7 17 8 19 9 18 10 16 11 8 12 9 13 24 14 26 15 68 16 66 17 64 18 19 20 21 22 23 24 25 26 27 68 68 47 151 147 146 148 150 147 145 TABLE OF TEST RESULTS Compacted 13.0 Original Ground Compacted 8.3 Original Ground Compacted 16.2 Original Ground 2.0 16.3 2.0 14.6 1.0 18.0 1.0 19.6 1.0 18.1 5.0 20.2 2.0 20.0 2.0 24.1 2.0 15.0 Compacted 18.1 Original Ground Compacted 17.9 Original Ground 1.0 21.7 Compacted 22.6 Original Ground Ccmpacted 18.9 Original Ground 3.0 22.3 5.0 23.3 Compacted 17.9 Original Ground 2.0 15.4 1.0 18.5 2.0 13.9 2.0 15.2 2.0 15.2 5.0 17.1 3.0 18.3 Dry Maximum Dry Density Ib/‘cu ft 110.6 Density Percent Ib,‘cu ft Compaction Remarks 121.6 91.0 105.0 118.6 97.5 118.6 116.6 128.0 92.8 118.6 102.5 113.1 107.4 114.8 107.8 114.8 106.7 114.8 105.4 114.8 97.3 107.2 116.4 128.0 106.9 118.6 107.0 118.6 97.4 107.2 98.4 107.5 88.5 82.2 91.1 78.2 90.6 93.6 93.9 92.9 91.8 90.8 91.0 90.1 90.2 91 .o 91.5 101.0 110.9 91.1 99.0 109.2 90.7 97.0 107.5 90.2 102.3 111.2 92.0 106.3 117.9 90.2 103.6 112.9 91.8 121.3 128.0 94.8 111.0 117.8 94.2 110.4 117.8 93.7 102.5 113.0 90.7 99.0 108.8 91.0 Reworked Reworked Reworked Ck on #5 Ck on #2 Ck on #3 *Indicates finished grade BENTON LNGINEEIING. ,NC. - - - - - - - - - - - - Project No. 77-8-1D Warmington Development, Inc. T-2 Test No. 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 Approx- Depth imatc of Fill Location at Test Bldg. No. in Feet 139 144 139 144 Dorado PI. 107 144 105 136 136 135 134 136 74 80 77 73 75 76 12 11 74 78 151 150 144 145 145 147 148 149 143 138 139 139 19 46 79 77 75 73 82 Field Moisture o/6 dry wt Density Density Percent Ib/cu ft Ib/cu ft Ccmpaction Remarks 1.0 13.7 109.7 117.8 93.0 4.0 16.4 104.0 114.8 90.5 3.0 15.0 99.6 107.2 92.9 6.0 15.1 100.0 110.4 90.6 1.0 14.9 110.6 116.8 94.7 1.0 14.3 110.8 110.4 91.3 8.0 16.8 99.8 110.4 90.4 1.0 18.2 103.6 111.8 92.7 1.0 17.3 102.4 113.4 90.3 3.0 16.6 107.8 117.8 91.4 2.0 14.5 106.7 117.8 90.5 1.0 14.5 104.8 114.8 91.2 7.0 14.7 107.0 117.8 90.7 1.0 16.7 103.7 114.8 90.2 2.0 15.0 110.6 117.8 93.8 2.0 18.8 104.1 114.8 90.6 3.0 18.4 101.9 110.2 92.5 3.0 18.9 102.1 112.2 91.0 4.0 17.2 100.3 107.9 93.0 2.0 15.3 107.7 117.8 91.4 2.0 13.6 117.7 121.6 96.8 5.0 12.0 110.5 117.8 93.8 2.0 14.4 107.9 117.8 91.5 4.0* 19.1 103.3 114.3 90.4 4.0* 20.3 106.2 114.8 92.4 10.0* 20.6 102.2 111.3 91.8 7.5* 20.9 102.9 111.3 92.5 6.5* 17.2 99.6 109.0 91.4 8.0* 21.2 101.1 111.3 90.8 6.0* 17.4 100.9 111.3 90.7 4.5* 17.0 100.9 111.3 90.7 1.0* 14.5 113.6 118.6 95.8 1.0 20.2 100.6 111.3 90.4 5.0 16.6 108.9 118.6 91.8 7.0 18.2 107.6 118.6 90.7 5.0 19.4 106.7 118.6 90.0 2.0 18.8 109.4 118.6 92.3 4.0 18.7 102.0 111.8 91.2 6.0 16.8 106.8 117.8 90.6 7.0 16.7 106.9 117.8 90.7 7.0 17.0 109.3 117.8 92.7 2.0 18.5 104.8 114.8 91.2 *Indicates finished grade Dry Maximum Dry BENTON LNGlNELRING. INC. - - - - - - - - - - - - - s. _.. T-r,. ,- rn rroiecr No. //-u-Iu Warmington Development, Inc. Test No. Approx- Depth imate of Fill Locat ion at Test Bldg. No. in Feet Field Moisture % dry wt Dry Maximum Dry Density Density Percent Ib/cu ft Ib/cu ft Canpaction Remarks 70 81 3.0 18.2 106.6 117.8 90.4 71 104 2.0 17.2 101.3 110.7 91.5 72 102 1.0 18.0 101.9 110.7 92.0 73 103 3.0 17.9 103.8 110.7 93.8 74 Dehesa Ct. 2.0 18.4 103.5 110.7 93.5 75 76 77 opp. Lot 74 92 91 151 (Garage Area) 149 (Garage Area) 147 (Garage Area) 138 20 19 18 17 74 83 135 132 134 130 133 (R7,5ar ) (Car) (Car) (liar) (Car) (Ear) (Car) 1.0 19.1 103.0 110.7 93.0 2.0 20.7 99.8 110.7 90.1 2.0* 24.3 92.3 110.7 83.4 78 3.0* 13.9 110.5 118.6 93.2 79 6.0* 14.2 106.6 116.8 91.3 80 81 82 83 84 85 86 a7 88 89 ‘90 91 92 3.0* 17.4 107.1 118.6 2.5* 13.6 97.2 118.6 7.0* 13.1 100.3 118.6 9.0* 13.4 102.2 118.6 5.5* 13.5 97.4 118.6 9.0 21.4 98.9 109.4 4.0 21.1 100.4 111.2 6.0 22.1 101.8 111.2 1.0 18.9 105.6 111.2 5.0 19.8 101.8 111.2 1.0 17.7 106.2 111.2 4.0 17.0 107.7 115.2 2.0 13.9 97.1 107.2 93 94 95 96 97 98 2.0 18.0 100.0 109.5 4.0 18.0 107.3 114.8 4.0 17.9 106.8 114.8 6.0 19.3 104.3 114.8 6.0 16.7 103.9 114.8 8.0 16.3 100.3 109.5 90.3 82.0 84.5 86.2 82.2 90.4 90.4 91.5 94.9 91.6 95.5 93.5 90.6 91.3 93.4 92.9 90.8 90.4 91.6 I -.l Reworked Rewaked Reworked Reworked Reworked Buttress Buttress Buttress Buttress Buttress Buttress Buttress *Indicates finished grade BLNTON LNOINLE”ING. INC. - - - - - - - _- - - - - - - Project NO. 77-8-1D Warmington Development, Inc. Test No. 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 Approx- imate Location Bldg. No. (Zar) (Car ) (Zar) (Car ) (R8eor) (Car) (Zar) (Ear) (liar) (R8oor) @Car ) (F?ar ) (P?ar ) (Liar ) (Car ) (Car) (i?ar ) 136 132 129 (R’,‘,, ) 45 44 46 73 Depth of Fill at Test in Feet 8.0 10.0 10.0 12.0 12.0 14.0 14.0 16.0 16.0 18.0 18.0 20.0 20.0 22.0 22.0 24.0 24.0 11.0 5.0 1 .o 26.0 2.0 3.0 6.0 4.0 *Indicates finished grade 15.7 18.9 16.5 19.2 16.4 19.2 19.8 15.8 15.6 15.7 16.1 16.0 21.4 21.7 21.7 14.9 15.5 15.7 21.1 20.4 21.1 20.3 14.0 106.2 100.6 104.5 103.0 103.2 Field Dry Moisture Density % dry wt Ib,‘cu ft 16.7 108.0 17.2 100.5 100.1 105.1 99.2 99.6 99.7 101.1 mENTON ENGINEEIINO. INC. 102.2 105.6 107.5 102.5 112.2 108.5 109.2 100.9 97.2 99.1 105.0 100.7 T-4 Maximum Dry Density Ib/cu ft 115.2 109.5 103.5 117.8 111.8 114.8 114.8 109.5 113.4 109.5 113.4 113.4 114.8 114.8 109.2 110.9 113.1 115.7 115.7 114.6 111.2 107.2 109.0 114.7 111.8 Percent Canpaction 93.7 91.8 91.4 90.1 90.0 91.5 90.9 90.6 90.8 90.9 91.0 90.1 91.9 93.6 91.3 91.2 90.7 97.0 93.8 95.3 90.7 90.7 90.9 91.5 90.1 Remarks Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress Buttress - - - - - -. - - - - - - - Project No. 77'-8-1D Warmington Development, Inc. T-5 Test No. 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 Approx- Depth imate of Fill Location at Test Bldg. No. in Feet 74 76 (FErr) (Ear) 78 80 81 79 82 80 83 81 82 21 22 23 24 45 44 46 45 44 47 48 20 19 18 12 11 10 9 8 73 17 16 15 83 22 24 25 26 6.0 14.7 109.3 117.8 92.7 8.0 14.9 105.0 114.8 91.4 28.0 15.0 102.9 111.8 92.0 30.0 15.1 loo.4 111.8 90.0 Buttress 6.0 16.3 105.5 114.8 91.8 6.0 16.0 104.8 114.8 91.2 7.0 16.9 107.0 117.8 90.8 8.0 11.9 111.2 115.2 96.5 6.0 11.8 109.7 117.0 93.8 10.0 12.9 111.4 117.0 95.2 8.0 13.1 110.0 117.0 95.0 11.0 11.7 106.4 114.8 92.6 10.0 10.5 110.3 117.8 93.6 2.5* 11.4 107.5 118.6 90.7 2.5* 12.5 104.2 118.6 87.9 1.5* 10.4 109.4 118.6 92.3 3.5* 13.1 106.4 118.6 89.7 6.0 14.8 114.5 118.6 96.6 7.0 13.1 116.0 118.6 97.8 8.0* 12.6 118.0 118.6 99.5 9.0* 15.5 112.7 118.6 95.0 10.0* 16.0 111.2 118.6 93.8 2.0* 14.7 108.5 118.6 91.4 2.0* 13.0 102.7 118.6 86.6 2.5* 9.4 112.6 118.6 95.0 7.0* 11.7 106.9 118.6 90.1 9.0* 7.6 111.2 118.6 93.7 4.0* 13.4 110.9 118.6 93.5 4.0* 11.7 112.6 121.6 92.6 5.0* 15.1 105.6 116.7 90.5 6.0* 12.8 116.9 121.6 96.2 5.0* 9.7 105.9 116.7 90.7 11.0 15.7 112.8 121.6 92.8 5.5* 12.4 112.3 118.6 94.7 5.0* 12.5 120.1 128.4 93.8 1.5* 11.4 105.0 116.0 90.5 12.0 14.8 97.5 107.2 91.0 2.5* 11.3 109.1 118.6 92.0 3.5* 13.4 110.1 118.1 93.3 2.5* 9.3 114.1 118.1 96.6 2.5* 13.2 117.5 121.6 96.6 Field Dry % dry wt Maximum Dry Density Density Ib,'cu ft Ib/cu ft Percent Capaction Remarks Buttress Reworked Reworked Reworked Ck on #81 Ck on '+82 Ck on #83 Ck on #84 Ck on 8138 Ck on #140 *Indicates finished grade BENTON CNGINCLRINO. INC. - - - - - - - - - - - - - Project No. 77-8-1D LVormington Development, Inc. T-6 Test No. 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 Approx- Depth imate of Fill Location at Test Bldg. No. in Feet 27 30 31 105 108 119 118 106 109 89 90 Dchesa ct. opp Bldg. 79 41 42 43 44 48 49 50 z&Rear) 25 26 25 24 26 Ramp at Rear of Bldgs. 80&81 Ramp at Rear of Bldgs. 80&81 Ramp at Rear of Bldgs. 808.81 Ramp at Rear of Bldgs. 1.5* 12.9 109.1 118.1 92.4 2.0* 8.0 114.4 118.1 96.9 1.0* 10.8 111.8 118.1 94.7 5.0 20.0 102.2 110.9 92.1 2.0 19.5 103.1 110.9 93.0 1.0 14.2 100.3 110.9 90.4 1.0 18.1 107.9 117.0 92.2 2.0 19.0 105.6 117.0 90.3 1.0 14.9 107.5 117.0 91.9 4.0 17.5 104.5 112. 93.1 3.0 13.0 104.8 112. 93.4 1.0 14.9 107.8 117.0 92.1 1.5* 8.7 117.4 121.6 96.5 1.5* 15.6 107.4 118.1 91.0 1.5* 16.4 107.1 118.1 90.7 1 .o* 17.2 106.6 118.1 90.2 2.0* 11.0 115.3 118.1 97.6 2.2* 13.8 110.7 118.1 93.8 1.0' 14.5 114.3 118.1 96.8 1.0* 12.1 113.5 118.1 96.1 1.0 20.2 104.0 114.7 90.7 2.0 21.2 101.5 111.8 90.8 1.0 20.4 102.2 111.8 91.4 4.0* 11.8 107.8 118.1 91.3 2.5* 13.5 113.4 118.1 96.0 2.5* 12.5 100.8 110.4 91.3 2.0 19.6 101.1 110.4 91.6 4.0 16.4 99.3 101.4 105.5 110.4 90.0 6.0 16.4 110.4 91.8 8.0 15.0 114.8 91.8 8OZ.81 *Indicates finished grade Field Moisture % dry wt Dry Maximum Dry Density Density Ib/cu ft Ib/'cu ft Ccmpaction Remarks Ck on #147 BENTON ENGINELRING. INC. -~ -. - - - - - - - - - - - - - Project No. 77-8-1D Warmington Development, Inc. Test No. 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 Approx- Depth imate of Fill Location at Test Bldg. No. in Feet Rampat 10.0 Rear of Bldgs. 80881 Ramp at 12.0 Rear of Bldgs. SO&81 79 12.5" 78 10.5* 77 10.5* 76 11.0* Dehesa 3.0 St. opp. Bldg. 79 Dehesa 3.0 St. opp. Bldg. 74 129 3.0* 131 4.5* 132 7.0* 133 7.0* 134 9.0* 135 10.5* 136 13.0* 68 7.5* 75 11.5* 74 13.0* 73 13.0* 104 6.5* 103 6.0* 102 5.5* 92 6.0* 91 5.0* 90 6.0* 89 8.0* 67 2.5* 66 2.0* 65 2.5* 63 1.5" 83 12.0 *Indicates finished grade Field Moisture 36 dry wt Dry Maximum Dry Density Density Percent Ib/cu ft Ib/'cu ft Compaction Remarks 13.7 111.5 121.6 91.7 14.1 108.3 118.6 91.3 12.9 105.1 114.8 91.5 14.5 105.2 114.8 91.5 14.5 105.6 114.8 91.9 10.5 107.4 118.6 90.6 14.5 101.8 111.8 91.1 13.8 105.4 114.8 91.8 14.6 108.6 114.8 94.6 15.0 102.7 111.8 91.9 14.5 110.1 114.8 95.8 13.7 106.1 114.8 92.3 12.9 106.3 114.8 92.5 14.2 104.8 114.8 91.2 15.6 103.7 114.8 90.3 15.9 106.5 118.1 90.2 13.5 115.9 118.1 98.2 13.0 108.8 118.1 92.2 18.2 101.4 111.8 90.7 12.7 107.7 114.8 93.8 17.2 106.6 114.8 92.9 17.7 100.8 111.8 90.2 16.1 104.8 111.8 93.7 14.1 107.7 114.8 93.7 16.5 104.3 114.8 90.8 17.6 106.5 114.8 92.7 16.9 106.6 118.1 90.3 18.5 103.5 114.7 90.2 18.8 103.8 114.7 90.5 15.1 105.5 114.7 92.0 14.4 102.8 111.8 91.9 r-7 BENTON CNGINELRING. INC. -~ - - - - - - - - - - - - - - Project No. 77-8-1D Warmington Development, Inc. Test No. 226 227 228 229 230 231 232 233 234 235 236 237 236 239 240 241 242 243 244 Approx- Depth imate of Fill Location at Test Bldg. No. in Feet 80 14.0* 81 15.5” 82 14.5* 83 15.0* 118 4.0* 119 4.0* 120 1.5* 121 1.5* 105 8.0* Dorado 3.0 PI. opp. Bldg. 136 106 4.0* 107 5.5* 108 6.0* 109 3.0* 151 2.0* Garage Sewer -2.o** Trench Backfill, Rear of Bldg. 7 Sewer -4.0 Trench Backfill, Rear of Bldg. 7 Sewer -6.0 Trench Backfill, Rear of Bldg. 7 Sewer -1 .o Trench Backfill, Rear of Bldg. 8 T-8 Field Dry Moisture Density % dry wt lb/cu ft 11.8 104.7 14.2 104.0 13.3 108.4 13.6 105.7 9.9 111.8 14.5 106.0 16.3 105.7 14.9 106.4 15.8 105.7 16.0 110.0 15.9 111.6 16.6 107.0 16.1 107.8 15.3 106.9 15.1 100.0 15.6 101 .c Dry Density Percent I b/‘cu ft Ccmpaction Remarks 111.8 93.6 111.8 93.0 111.8 97.1 111.8 94.6 118.1 94.7 117.8 90.0 114.8 92.1 114.8 92.7 114.5 92.3 118.1 93.1 118.1 94.5 114.5 93.5 118.1 91.2 118.1 90.5 109.0 91.7 C!c on #77 113.1 86.2 Reworked **Indicates depth below finished grade *Indicates finished grade 14.4 96.7 11C.l 32.0 Rewaked 18.1 99.7 114.7 87.0 Reworked 12.4 100.0 118.1 84.7 Reworked BENTQN LNGINEERING. INC. -. - - - - - - - - - - - - Project No. 77-8-1D Warmington Development, lnc Test No. 245 246 247 248 249 250 251 252 Approx- Depth imate of Fill Location at Test Bldg. No. in Feet Sewer -3.0 Trench Backfill, Rear of Bldg. 8 Sewer -5.0 Trench Backfill, Rear of Bldg. 8 Sewer -5.0 Trench Backfill, Rear of Bldg. 8 Sewer -3.0 Trench ftackfill, Rear of Bldg. 8 Sewer -6.0 Trench Backfill, Rear of Bldg. 7 Sewer -4.0 Trench Backfill, Rear of Bldg. 7 Sewer -2.0 Trench Backfill, Rear of Bldg. 7 Sewer -1 .o Trench Backfill, Rear of Bldg. 8 Field Dry Moisture Density % dry wt Ib/cu ft 10.8 100.4 Maximum Dry Density Ib,‘cu ft 118.1 Percent Cunpaction Remarks 85.0 Reworked 19.2 97.7 118.1 82.7 Reworked 16.6 15.4 9.4 11.0 10.1 9.7 113.5 121.6 93.3 Ck on # 246 111.5 121.6 91.7 Ck on #’ 245 115.3 124.3 92.5 Ck on # 243 106.5 118.1 90.2 Ck on # 242 110.9 121.6 91.2 Ck on # 241 112.7 121.6 92.8 Ck on # 244 T-9 BENTON ENGINEERING. 1NC. - - - .- - - - - - - - Project No. 77-8-ID Warmington Development, Inc. L-l LABORATORY TEST RESULTS The maximum dry densities and optimum moisture contents of the major fill materials as determined by the A.S.T.M. D 1557-70 method, that uses 25 blows of a 10 pound rammer falling fra a height of 18 inches on each of 5 layers in a 4 inch diameter l/30 cubic foot compaction cylinder, are presented as follows: Soil Description Light brown gray clayey silt Olive green silty clay Brown gray silty clay Yellow brown very fine to fine sandy clay Gray brown fine sandy clay Olive green silty clay Light gray silty very fine to fine sand with slight clay binder Gray black silty clay Brown clayey fine sand with sane fine sandy clay Light brown and gray silty clay Light yellow brown fine sandy clay Brown clayey fine to medium sand Grayish brown silty fine sand Red brown fine to medium sandy clay Light gray silty clay with yellow streaks Light gray silty fine sand Brown silty clay Light gray brown fine sandy clay with scattered pea gravel Light gray brown silty very fine to fine sand Light yellow brown clayey very fine to fine sand Gray silty very fine sand Light yellow brown very fine to fine sand Light gray silty fine sand Gray with red brown and white silty clay Maximum Dry Density Ib/cu ft Optimum Mois- ture Content % dry wt 107.2 19.0 107.5 16.4 109.0 17.8 110.4 ,15.5 110.9 14.3 111.2 15.0 115.2 13.7 116.8 11.8 117.8 13.3 118.6 14.0 121.6 11.5 128.0 9.2 117.0 13.1 111.3 15.0 110.7 15.1 111.8 12.5 110.8 17.2 118.1 14.1 117.8 13.1 114.8 14.1 112.2 16.0 107.9 18.1 111.8 12.5 114.7 15.3 BENTON ENGINEERING. INC.